JP7809775B2 - Rod connection structure - Google Patents

Description

This invention relates to a rod connection structure, and in particular to a connection structure for an insulated control rod for indirect work used in indirect live-line work, and a connection structure for a tool tip or the like connected to the rod.

Conventionally, several proposals have been made regarding the connection structure between an indirect live-line work tool and an insulated operating rod for indirect live-line work (Patent Documents 1 to 3).
In indirect live-line construction, it is extremely important to ensure the safety of workers during the work, and care is taken to ensure that various indirect live-line construction tools, such as stripping machines, which are freely connected to the tip of the insulating control rod, do not fall off accidentally during work.
The connecting structure of Prior Art Document 1 has a locking groove for a connecting fitting in which a first shift groove portion having a generally inverted L shape consisting of a vertical groove portion, a horizontal groove portion, and a vertical groove portion is added to a second shift groove portion having a generally horizontal L shape consisting of a horizontal groove portion and a vertical groove portion, or an additional vertical groove is formed in the vertical groove. Even if the pin moves to the top end in the vertical groove, it is prevented from slipping out laterally, making it difficult for the pin to come out of the locking groove.
The connecting structure of Prior Art Document 2 is such that the common operating rod has a connecting portion that can connect the rod-shaped member and the tool tip and a fixing portion for locking the tool tip, and the fixing portion is composed of a core portion in which inclined portions are connected like abacus beads, and a slide member that can slide along the axial direction of this core portion and abut against the tool tip, and the slide member is formed so that each abutment portion of the pressing portion presses the core portion in the radial direction of the core portion, thereby tightening and fixing the tool tip.
In the connecting structure of Prior Art Document 3, the tool part has a cylindrical shaft part, a pair of push buttons, and two leaf springs, and the connecting fitting has a shaft hole and a pair of cutout grooves, and the shaft part can be introduced and fitted into the shaft hole, and the knob can be grasped to cause the latch plate to appear and disappear from the recess, thereby connecting the operating rod and the tip tool.

Japanese Patent Application Laid-Open No. 2008-199861 JP 2013-102629 A JP 2017-99141 A

However, it is difficult to say that the connection structures disclosed in the inventions of Patent Documents 1 to 3 ensure sufficient safety.
The present invention has been made in view of the above circumstances, and has an object to provide a rod body connecting structure that can further ensure safety.

The rod body connecting structure according to claim 1 of the present invention is a connecting structure that can connect a rod body and a connected part connected to the rod body to a locked state, and comprises a core member configured to connect the connecting part on the rod body side with the connecting part on the connected part side, a first connecting member arranged on the rod body side so as to be movable in the axial direction of the rod body in the rod body side area, a second connecting member arranged in the connected part side area, and a third connecting member fitted into the core member and also fitted into the first connecting member, and the first connecting member is annular and fitted around the core member. The second connecting member has a connecting portion attachment hole formed therein into which a core member is inserted, and the third connecting member is configured so that its tip side contacts the proximal end edge of the second connecting member and the proximal end edge of the inner circumferential surface of the hollow portion of the first connecting member, and is interposed between the first connecting member and the second connecting member, and is configured so that the connecting portion on the rod body side and the connecting portion on the connected portion side are connected by combining the core member with the connecting portion attachment hole, and the core member is configured to be inserted into the connecting portion attachment hole formed in a hollow portion provided in the second connecting portion of the second connecting member. a columnar core member mounting portion provided in the connecting portion mounting hole, the core member having a hollow annular portion drilled in the longitudinal direction, the hollow portion having a first hollow portion that is elongated and narrowed in the center and a second hollow portion formed further toward the tip side than the first hollow portion, the first connecting member being configured to be moved by rotating and stopped at a position suitable for pressing the second connecting member by the third connecting member, the rod body being provided with fixing means constituting a separation prevention means for preventing separation of the connected members by the connecting structure in an area on the connected portion side connected to the rod body, the second connecting member being formed with fixing means for stopping the fixing means on the rod body side in an area on the rod body side, the third connecting member being fixed to the first connecting member side area of the second connecting member by the fixing means constituting the separation prevention means , and controlling the movement of the second connecting member so that the fixing means on the rod body side does not come off the fixing means formed on the second connecting member when the connected portion is connected to the rod body.
A rod body connecting structure according to claim 2 of the present invention is a connecting structure that can connect a rod body and a connected part connected to the rod body to a locked state, and includes a core member configured to connect a connecting part on the rod body side with a connecting part on the connected part side, a first connecting member disposed on the rod body side so as to be movable in the axial direction of the rod body in the rod body side region, a second connecting member disposed in the connected part side region, and a third connecting member inserted into the core member and also inserted into the first connecting member, wherein the first connecting member is annular and fitted around the core member, and the second connecting member is annular and fitted around the core member. The third connecting member is formed with a connecting portion attachment hole into which a core member is inserted, and the third connecting member is configured to be interposed between the first connecting member and the second connecting member, with its tip side contacting the proximal end edge of the second connecting member and contacting the proximal end edge of the inner circumferential surface of the hollow portion side of the first connecting member, and is configured so that the connecting portion on the rod body side and the connecting portion on the connected portion side are connected by combining the core member with the connecting portion attachment hole, and the core member has a shape that is inserted into a connecting portion attachment hole formed in a hollow portion provided in the second connecting portion of the second connecting member, and the connecting portion attachment hole is configured so that the third connecting member is interposed between the first connecting member and the second connecting member, with its tip side contacting the proximal end edge of the second connecting member and the inner circumferential surface of the hollow portion side of the first connecting member, and the connecting portion attachment hole is configured so that the connecting portion on the rod body side and the connecting portion on the connected portion side are connected, and the core member has a shape that is inserted into a connecting portion attachment hole formed in a hollow portion provided in the second connecting portion of the second connecting member, and the connecting portion attachment hole is configured so that the third connecting member is interposed between the first connecting member and the second connecting member, and ... A columnar core member attachment portion is provided in the bore, and the core member has a hollow annular portion drilled in the longitudinal direction, and the hollow portion has a first hollow portion that is long and narrow formed in the center, and a second hollow portion formed on the tip side of the first hollow portion, and is configured so that the first connecting member can be moved by turning and stopped at a position suitable for pressing the second connecting member with the third connecting member , and the connecting portion on the rod body side and the connecting portion on the connected portion side have a convex portion formed on one side and a concave portion formed on the other side, and the convex portion and the concave portion are are configured to be combined and connected, the first connecting member and the second connecting member are configured to be separated by moving the connected first connecting member and the second connecting member in opposite directions, the rod body is provided with a deterrent means that constitutes a separation prevention means that prevents separation of the members connected by the connecting structure, and the deterrent means is configured to press the third connecting member toward the second connecting member so that the convex portion and concave portion that are interlocked when connected do not separate.
The rod body connecting structure of claim 3 of this invention is a rod body connecting structure as described in claim 1 or 2, in which a second resilient member is arranged in a second hollow portion existing between the proximal end of the columnar core member mounting portion and the boundary wall portion of the first hollow portion of the hollow portion, and the second resilient member is configured to contract and push the columnar core member mounting portion and the second connecting portion toward the tip side when locked, and is configured to be in a lightly contracted state in the locked state and to become further contracted when the second connecting member is pulled toward the proximal side during the release operation.

The present invention provides a rod connection structure that can ensure even greater safety.

The above and other objects, features, and advantages of the present invention will become more apparent from the following detailed description of the invention, which proceeds with reference to the drawings.

1 is a front diagrammatic view of a connecting structure according to a first embodiment of the present invention; FIG. 2 is a front cross-sectional diagram of the connection structure shown in FIG. 1 . 2A and 2B are cross-sectional diagrams of the connection structure shown in FIG. 1, where (A) is a cross-sectional diagram taken along line A1-A1 of FIG. 1, (B) is a cross-sectional diagram taken along line B1-B1 of FIG. 1, and (C) is a cross-sectional diagram taken along line C1-C1 of FIG. 2A and 2B are front cross-sectional diagrams illustrating the operation of the connecting structure shown in FIG. 1, in which FIG. 2A shows an unlocked state, and FIG. 2B shows a state in which the connecting portion has been removed. FIG. 2 is an exploded perspective view of the connecting structure shown in FIG. 1; FIG. 2 is an exploded cross-sectional view of the connecting structure shown in FIG. 1; FIG. 2 is a perspective view of an operating rod having the connecting structure shown in FIG. 1 ; 2 is a perspective view illustrating a state in which a connecting portion of the connecting structure illustrated in FIG. 1 is removed; FIG. FIG. 2 is an exploded perspective view of the connecting structure shown in FIG. 1; FIG. 10 is a partially cross-sectional front view of a connecting structure according to a second embodiment of the present invention; FIG. 10 is a front cross-sectional diagram of a connecting structure according to a second embodiment of the present invention; 10A and 10B are cross-sectional diagrams of a connecting structure according to a second embodiment of the present invention, in which (A) is a cross-sectional view taken along line A2-A2 in FIG. 10B, (B) is a cross-sectional view taken along line B2-B2 in FIG. 10B, and (C) is a cross-sectional view taken along line C2-C2 in FIG. 10B. 11A and 11B are front cross-sectional diagrams illustrating the operation of the connecting structure shown in FIG. 10, in which (A) shows an unlocked state, and (B) shows a state in which the connecting portion is removed. FIG. 11 is an exploded perspective view of the connecting structure shown in FIG. 10; FIG. 11 is an illustrative cross-sectional view showing the connecting structure shown in FIG. 10 in an exploded state. FIG. 11 is a perspective view of an operating rod provided with the connecting structure shown in FIG. 10 . 11 is a perspective view of the connecting structure shown in FIG. 10 with the connecting portion removed. FIG. 10A and 10B are diagrams illustrating a connecting structure according to a third embodiment of the present invention, in which FIG. 10A is a front diagrammatic view, and FIG. 10B is a front cross-sectional diagrammatic view. 10A and 10B are cross-sectional diagrams of a connecting structure according to a third embodiment of the present invention, in which (A) is a cross-sectional view taken along line A3-A3 in FIG. 10B, (B) is a cross-sectional view taken along line B3-B3 in FIG. 10B, and (C) is a cross-sectional view taken along line C3-C3 in FIG. 10B. 10A and 10B are cross-sectional diagrams illustrating the operation of the connecting structure according to the third embodiment of the present invention, in which FIG. 10A shows the unlocked state, and FIG. 10B shows the state in which the connecting portion has been removed. FIG. 17 is a perspective view illustrating the connecting structure shown in FIG. 16 in an exploded state. FIG. 17 is a perspective view illustrating the connecting structure shown in FIG. 16 in an exploded state. FIG. 17 is a perspective view of the operating rod having the connecting structure shown in FIG. 16 . 17 is a perspective view of the connecting structure shown in FIG. 16 with the connecting portion removed. FIG. FIG. 10 is a front diagrammatic view of a connecting structure according to a fourth embodiment of the present invention; FIG. 23 is a perspective view illustrating the connecting structure shown in FIG. 22 in an exploded state. 23A and 23B are diagrams illustrating the disassembled state of the connecting structure shown in FIG. 22, where (A) is a perspective diagram, (B) is a plan diagram, and (C) are cross-sectional diagrams taken along lines a-a, bb, and cc of FIG. (B). FIG. 23 is a perspective view of the connecting structure shown in FIG. 22, with a portion thereof in cross section. FIG. 23 is a perspective view illustrating the connecting structure shown in FIG. 22 in an exploded state. FIG. 23 is a perspective view illustrating the connecting structure shown in FIG. 22 in an exploded state. FIG. 23 is a front diagrammatic view of the core member of the connecting structure shown in FIG. 22 . 23 is a perspective view of the connecting structure shown in FIG. 22 with the connecting portion removed. FIG. FIG. 23 is a perspective view of the connection structure shown in FIG. 22 . FIG. 23 is a perspective view of the connection structure shown in FIG. 22 . 23A and 23B are front diagrammatic views of the connecting structure shown in FIG. 22, in which FIG. 23A shows a locked state and FIG. 23B shows a provisionally locked state. 23A and 23B are front diagrammatic views of the connecting structure shown in FIG. 22, in which FIG. 23A shows the unlocked state, and FIG. 23B shows the connecting portion detached state. FIG. 23 is a perspective view of an operating rod having the connecting structure shown in FIG. 22 . FIG. 2 is a perspective view of a modified operating rod having the connecting structure shown in FIG. 1 . FIG. 11 is a perspective view of a modified operating rod having the connecting structure shown in FIG. 10 . FIG. 17 is a perspective view of a modified operating rod having the connecting structure shown in FIG. 16 . FIG. 23 is a perspective view of a modified operating rod having the connecting structure shown in FIG. 22 .

(definition)
The side of the rod body according to the present invention that is held by hand is referred to as the handle or handle side, and the tip side opposite the handle side is referred to as the tip or tip side.
The center line extending in the longitudinal direction of the rod body according to the present invention is referred to as the axis line, the direction in which the axis line extends is referred to as the axial direction, and the direction along the outer periphery of the rod body is referred to as the circumferential direction.

Typical examples of the rod body connecting structure of this invention are, for example, a connecting structure at the tip side of the rod body between the tip of the rod body and a portion of a connecting tool that is attached to the rod body, or a connecting structure that connects two divided rod bodies.
In this specification, the connecting tool, the tool tip and one of the two halves are referred to as a connecting tool.

In one embodiment of the present invention, the connection structure 10 connects a connecting portion of an operating rod 12, which is a rod body, that connects to a connector, and a connected portion of a tip tool 14, which is a connector connected to the operating rod 12. This relates to a connection structure between an insulated operating rod for indirect live-line work, used in indirect live-line work carried out to avoid power outages around a work site, and a connected portion of a connector, such as a tip tool, that is interchangeably connected to the tip of the operating rod 12 and that is connected to the operating rod 12.

Generally, an insulated operating rod is composed of a long insulated operating rod and an electrical work tool, i.e., a tip tool, attached to the tip of the operating rod, and is used by changing the tip tool appropriate for the purpose of the work, such as gripping or cutting high-voltage distribution lines.
The operating rod 12 according to the present invention is used for the same purpose as the insulated operating rod, and the operating rod 12 may be referred to as an insulated operating rod.

The connecting structure 10, which is one embodiment of the present invention, is a connecting structure that connects a connecting portion of a rod-shaped operating rod 12, which is connected to another object, to a connected portion of a tool tip 14 that is connected to the operating rod 12.

The connecting portion 24 on the side of the operating rod 12, which is a rod body, and the connecting portion 32 on the side of the connected portion have a convex portion formed on one side and a concave portion formed on the other side, and are configured so that the convex portion and the concave portion are combined to connect.
In this embodiment, a convex portion is formed on the connecting portion 24 (on the operating rod side), and a concave portion is formed on the connecting portion 32 (on the tool tip side).

The operating rod 12 has a first connecting member 50 arranged in the region of the connecting portion of the operating rod 12 that is connected to something else, and the tip tool 14 has a second connecting member 80 arranged in the region of the connected portion of the tip tool 14 that is connected to the operating rod 12.
The operating rod 12 is provided with a fixing means 16 constituting a separation prevention means in the region on the side connected to the tip tool 14, which prevents items connected by the connecting structure from separating, and the second connecting member 80 is provided with a fixing means 16 constituting a separation prevention means in the region on the side connected to the operating rod 12, which prevents items connected by the connecting structure that stops the fixing means 16 from separating, and a first fixing groove 90 constituting the fixing means 16 is formed.
The first connecting member 50 is arranged on the operating rod 12 so as to be movable in the axial direction of the operating rod, and when the tip tool 14 is attached to the operating rod 12 and the connecting portion 24 (on the operating rod side) and the connecting portion 32 (on the tip tool side) are connected to a locked state, the first connecting member 50 is fixed to the area of the second connecting member 80 on the first connecting member 50 side by the fixing means 16 of the operating rod 12, controlling the movement of the second connecting member 80 and preventing the fixing means 16 of the operating rod 12 from coming off the first fixing groove 90 of the fixing means 16 of the second connecting member 80.

The fixing means 16 provided on the operating rod 12 is configured to move in the axial direction of the operating rod 12 relative to the tool bit 14 as the operating rod 12 moves, and to rotate in the circumferential direction of the operating rod 12.

The first connecting member 50 may be formed to cover the fixing means 16 on the operating rod 12 side when the operating rod 12 is attached to the second connecting member 80 on the tool tip 14 side using the fixing means 16 on the operating rod 12 side.

The first connecting member 50 is configured so that when the operating rod 12 is attached to the second connecting member 80 on the tool tip 14 side by the fixing means 16 on the operating rod 12 side, the end of the second connecting member 80 on the first connecting member 50 side is pressed from the proximal side toward the distal end.

The fixing means 16 is constituted by a fixing pin 60 constituting a first fixing protrusion formed on the connecting portion 24 on the operating rod 12 side,
and/or
The fixing means 16 is configured by a second fixing protrusion (plunger) 62 formed on the first connecting member 50 on the operating rod 12 side.
The fixing means 16 formed on the other second connecting member 80 is configured by a winding fixing groove formed at a corresponding position on the first connecting member 50 and/or the second connecting member 80. The winding fixing grooves (first fixing groove 90 and second fixing groove 92) are configured in a generally U-shape in plan view, so as to form an opening-side groove portion that extends toward the tip side from an opening into which the first fixing protrusion (pin) 60 and the plunger 62 that constitutes the second fixing protrusion are fitted in the axial direction, a groove portion that changes its extending direction from the opening-side groove portion to extend in the circumferential direction, and a fixing groove portion that changes its extending direction and extends axially toward the proximal side.

The fixing means 16 is composed of the fixing pin 60 and the plunger 62 on the connecting portion side of the operating rod 12 , and the first fixing groove 90 on the connected portion side that is connected to the operating rod 12 .
The fixing pin 60 and the plunger 62 are provided so as to protrude in the radial direction of the operating rod 12 .
The fixing groove 90 has a depth that allows the head of the fitted fixing pin 60 to protrude slightly and a width that allows the fitted fixing pin 60 and the shaft portion of the plunger 62 to move, and is configured so that the fixing pin 60 and plunger 62 do not move when the tip tool 14 is attached to the operating rod 12 in the connecting structure 10.

The fixing means 16 on the operating rod 12 side is composed of a second fixing protrusion (plunger) 62 that constitutes a positioning member formed on the first connecting member 50, and the second fixing protrusion (plunger) 62 that constitutes the positioning member may be configured to fit into a second fixing groove 92 that is the fixing means 16 arranged on the second connecting member 80.

When attaching the connecting portion 32 (on the tool tip side), which constitutes the connected portion to which the tool tip 14 is connected, to the connecting portion 24 (on the operating rod side), which constitutes the connecting portion to which the operating rod 12 is connected, the first connecting member 50 is configured to thread into the second connecting member 80 of the connecting portion 32 (on the tool tip side) or the connecting portion 24 on the operating rod 12 side, and may be configured so that it does not come off the second connecting member 80 when the tool tip 14 is fixed to the operating rod 12.

The connecting portion 24 on the rod body side and the connecting portion 32 on the connected portion side are formed with a first fixing convex portion 60 as fixing means 16 constituting a convex portion on one side, and a first fixing groove 90 as fixing means 16 constituting a concave portion on the other side, and are configured so that the convex portion and the concave portion are combined and connected,
The first connecting member 50 is disposed on the rod body side so as to be movable in the axial direction of the rod body,
The second connecting member 80 is disposed on the connected portion side so as to be movable toward the connected portion,
The first connecting member 50 and the second connecting member 80 are configured to be separated by moving the connected first connecting member 50 and the connected second connecting member 80 in opposite directions,
The operating rod 12 is provided with a restraining means 18 that constitutes a separation prevention means for preventing separation of the components connected by the connecting structure.
The restraining means 18 is configured to press the first connecting member 50 toward the second connecting member 80, preventing the first fixing convex portion 60, which is the fixing means 16 that forms the convex portion that engages when connected, from separating from the first fixing groove 90 that forms the concave portion.

The connecting portion 24 (on the control rod side) and/or the connecting portion 32 (on the tip tool side) are provided with a restraining means 18 that resiliently springs from the proximal side of the control rod 12 toward the tip tool 14 side, or from the tip tool 14 side toward the control rod 12 side.

The restraining means 18 is composed of a resilient member 70,
The resilient member 70 is arranged so as to press the first connecting member 50 toward the connected portion, or so as to press the first fixing convex portion 60, which constitutes the engaged convex portion, and the first fixing groove 90, which constitutes the concave portion, so as not to separate when the second connecting member 80 is connected.
The resilient member 70 is interposed in the connecting portion 24 (on the operating rod side) or the tool portion (tip tool portion) 30 so as to press the first connecting member 50 toward the tip tool 14 side or to press the fixing means 16 into the fixing groove 90.

The operating rod 12 has a first connecting portion 40 that is thinner than the operating rod main body 20 formed on the side that is connected to the tip tool, and a second connecting portion 42 that is thicker than the first connecting portion 40 is connected to the tip tool 14 side of the first connecting portion 40.
The first connecting portion 40 is configured to form a movement space for the first connecting member 50 in the axial direction between itself and the operating rod body 20 .
The first connecting portion 40 can have a coil spring, which is a resilient member 70 constituting the restraining means 18, disposed around it.
When the connecting portion 32 (on the tip tool side), which is the connected portion, is attached to the connecting portion 24 on the rod body side (on the operating rod side) and locked, the first connecting member 50 is fixed to the first connecting member side region of the second connecting member 80 by the fixing means 16, and is configured to control the movement of the second connecting member 80 so that the fixing means 16 on the rod body side does not come off the fixing means 16 formed on the second connecting member 80.

In this embodiment, the operating rod body 20 of the operating rod 12 has an approximately circular cross section, the first connecting portion 40 and the second connecting portion 42 of the core member 44 have an approximately circular cross section, the first connecting member 50 has an approximately circular cross section, and the second connecting member 80 has an approximately circular cross section.
The operating rod body 20, core member 44, first connecting member 50 and second connecting member 80 of the operating rod 12 are arranged in parallel with each other, with the center line extending in the axial direction of the rod body being concentric.

The connecting portion 24 on the side of the operating rod 12, which is a rod body, and the connecting portion 32 on the side of the connected part are arranged in parallel, with the center line extending in the axial direction of the rod body being concentric, and a convex portion is formed on one side and a concave portion is formed on the other, and the convex portion and the concave portion are configured to be combined and connected.
In this embodiment, a core member 44 forming a convex portion is formed in the connecting portion 24 (on the operating rod side), and a rod body side connecting portion mounting hole 94 forming a concave portion is formed in the connecting portion 32 (on the tip tool side).
The core member 44 is a rod-shaped body with an approximately circular cross section, and the rod-side connecting part mounting hole 94 is an annular body with an approximately circular cross section, and is arranged concentrically with the center line extending in the axial direction of the rod body, and is configured so that by combining the core member 44 with the rod-side connecting part mounting hole 94, the connecting part 24 on the operating rod 12 side and the connecting part 32 on the connected part side are connected.

The first connecting member 50 is disposed on the operating rod 12 in the region on the hand side of the divided operating rod 12,
The second connecting member 80 can be disposed on the operating rod 12 that is split into two and is located on the tool tip side.

(First embodiment)

A connecting structure 10 according to a first embodiment of the present invention will be described mainly with reference to FIGS. 1 to 9. FIG.
The connecting structure 10, which is the first embodiment of the present invention, is a connecting structure that connects an operating rod 12 that constitutes a rod body and a connecting portion of a tool tip 14 that constitutes a connected part connected to the operating rod 12.

The operating rod 12 comprises an operating rod body 20 that forms the main body of a long, cylindrical rod, a gripping portion 22 attached to the rear end, i.e., the front side, of the operating rod body 20, and a connecting portion 24 (on the operating rod side) formed on the tip end, i.e., the area attached to the tip tool 14, of the operating rod body 20.

The structure of the operating rod 12, particularly the operating rod body 20, which constitutes the insulated operating rod for indirect live-line work, may be, for example, a single rod body, or two rod bodies arranged with their axes parallel to one another.
The insulated control rod for indirect live-line work should be electrically insulating, and it is better if it can be made lighter. For example, various types of tough plastics such as fiber reinforced plastics (FRP) can be used.

The tip tool 14, such as a tool for indirect live-line construction, is composed of, for example, a stripper for stripping the insulating coating of a live overhead distribution line, pliers, a fastening tool, and the like.
The tip tool 14 comprises a tool portion 30 that directly contacts an electric wire, etc., and a connecting portion 32 (on the tip tool side) that constitutes the connected portion and is formed in the area where the tool portion 30 is connected to the operating rod 12.

The connecting portion 24 on the side of the operating rod 12, which is a rod body, and the connecting portion 32 on the side of the connected part are arranged in parallel, with the center line extending in the axial direction of the rod body being concentric, and a convex portion is formed on one side and a concave portion is formed on the other, and the convex portion and the concave portion are configured to be combined and connected.
In this embodiment, a core member 44 forming a convex portion is formed in the connecting portion 24 (on the operating rod side), and a rod body side connecting portion mounting hole 94 forming a concave portion is formed in the connecting portion 32 (on the tip tool side).
The core member 44 is a rod-shaped body with an approximately circular cross section, and the rod-side connecting part mounting hole 94 is an annular body with an approximately circular cross section, and is arranged concentrically with the center line extending in the axial direction of the rod body, and is configured so that by combining the core member 44 with the rod-side connecting part mounting hole 94, the connecting part 24 on the operating rod 12 side and the connecting part 32 on the connected part side are connected.

The operating rod 12 is provided with a fixing means 16 in the area on the side connected to the tip tool 14, which fixes the tip tool 14 and prevents the components connected by the connecting structure from separating, thereby constituting a separation prevention means.
Furthermore, in the area of the operating rod 12 that is connected to the tip tool 14, a restraining means 18 is arranged that constitutes a separation prevention means that prevents the operation rod 12 and the tip tool 14 from moving to prevent the connection between them from coming loose, and prevents the items connected by the connecting structure from separating.

The connecting portion 24 of the operating rod 12, which constitutes the connecting portion of the rod body, is composed of a core member 44, in which a first connecting portion 40, which is thinner than the operating rod main body 20, is formed on the side where it is connected to the operating rod main body 20, and a second connecting portion 42, which is thicker than the first connecting portion 40, is connected to the tip tool 14 side of the first connecting portion 40.

The core member 44 that constitutes the connecting portion 24 (on the operating rod side) of the operating rod body 20 is connected to the operating rod body 20 by the (first) operating rod mounting member 26 and the fixing pins 26a and 26b that constitute the operating rod mounting member.

(1) In this embodiment, the operating rod mounting member 26 and the core member 44 are fitted into a recess 20a provided on the tip side of the operating rod body 20, as shown in Figure 3 (C), and are fixed by fixing pins 26a and 26b.
The first connecting portion 40 of the core member 44 is fitted around the (first) operating rod mounting member 26 and fitted into a recessed portion 20a provided at the tip of the operating rod main body 20, and is fixed to the operating rod main body 20.

In this embodiment, the connecting portion 24 (on the operating rod side) includes a core member 44 that constitutes a first connecting portion 40 and a second connecting portion 42 .
The core member 44 is hollow and cylindrical, and is disposed around the (first) operating rod mounting member 26 and the (second) operating rod mounting member 28 that constitute the operating rod mounting members.

In this embodiment, the core member 44 has a proximal side that forms a first connecting portion 40 formed of a cylindrical portion thinner than the operating rod body 20 so that it can be attached to the operating rod body 20, and a distal side that forms a second connecting portion 42 formed of a thicker cylindrical portion thicker than the thin proximal first connecting portion 40.

The core member 44 is shaped to fit into the rod-side connecting portion attachment hole 94 formed in a hollow portion of the second connecting portion 84 of the second connecting member 80, and in this embodiment is configured as a cylinder that can slide within the hollow portion.

The core member 44 has a hollow annular portion 46 drilled in the longitudinal direction.
The hollow portion 46 has a first hollow portion 46a that is elongated and narrowed at approximately the center, and a second hollow portion 46b that is relatively thick and has a diameter longer than that of the first hollow portion 46a is formed further towards the tip side of the first hollow portion 46a.
Furthermore, the hollow portion 46 has a third hollow portion 46c formed on the proximal side of the first hollow portion 46a, the third hollow portion 46c being relatively thick and having a diameter greater than that of the first hollow portion 46a.

The core member 44 has an operating rod attachment member ((first) operating rod attachment member 26) disposed in the third hollow portion 46c of the hollow portion 46 for attachment to the operating rod body 20.
The operating rod mounting member ((first) operating rod mounting member 26) is fixed to the tip of the operating rod main body 20, and the third hollow portion 46c of the core member 44 is fitted around and attached to the (first) operating rod mounting member 26.
(Second) The operating rod mounting member 28 is inserted into the hollow portion 46, with its proximal end positioned within the third hollow portion 46c, and its distal end being slidably fitted into the first hollow portion 46a, and furthermore, the distal end extending through the second hollow portion 46b towards the distal end and connected to the columnar core member mounting portion 96.
In this embodiment, the (second) operating rod mounting member 28 is a cylindrical rod body with a head portion having a diameter greater than that of the first hollow portion 46a on the proximal side and a rod-shaped portion having a diameter substantially the same as that of the first hollow portion 46a on the distal side. Therefore, the second hollow portion 46b leaves a hollow portion between itself and the (second) operating rod mounting member 28, and is configured so that the second resilient member 76 can be fitted therein.

The connecting portion on the rod side and the connecting portion on the connected part side are configured so that a first fixing convex portion 60, which serves as fixing means 16 forming a convex portion, is formed on one side, and a first fixing groove 90, which serves as fixing means 16 forming a concave portion, is formed on the other side, and the convex portion and concave portion are combined to connect.

The fixing means 16 is formed of a first fixing protrusion (pin) 60 that constitutes a separation prevention means and is formed on the connecting portion on the rod body side.
The fixing means formed on the second connecting member 80 or the fixing means 16 formed on the core member 44 is constituted by a first fixing groove 90, which is a fixing groove that constitutes a tortuous separation prevention means, formed at a corresponding position on the core member 44 and/or the second connecting member 80.

In this embodiment, the core member 44 has a first fixing protrusion (pin) 60 attached to it on the side of the second connecting portion 42, which constitutes the fixing means 16, and a resilient member 70, which constitutes the restraining means 18, attached around it on the side of the first connecting portion 40.

The connecting portion 24 (on the operating rod side) has a core member 44 fixed to the center of the tip of the operating rod body 20, and a first connecting member 50 is arranged around the core member 44.
Furthermore, the connecting portion 24 (on the operating rod side) is provided with a restraining means 18 around the proximal side of the core member 44, which is composed of a resilient member 70 such as a coil spring that is formed so as to resiliently repel from the proximal side of the operating rod 12 toward the tip tool 14 side.
In this first embodiment, a resilient member mounting portion 72 for fastening the distal end of the resilient member 70 is formed on the proximal side of the first connecting member 50 .
Furthermore, the operating rod body 20 of the operating rod 12 has a spring member mounting portion 74 formed on the tip side on the side facing the outer surface of the first connecting member 50 on the hand side, for securing the rear end side of the spring member 70.
The resilient member 70 constituting the restraining means 18 is configured to bias the first connecting member 50 toward the second connecting member 80 constituting the connected portion when the tip tool 14 is attached to the operating rod 12.

When locked, the first resilient member 70 constituting the restraining mechanism 18 pushes the first connecting member 50 toward the tip, which in turn pushes the second connecting member 80 toward the tip. (Types 1, 3, and 4)

The diameter of the restraining means 18 (resilient member 70 ) is shorter than the diameters of the first connecting member 50 and the resilient member mounting portion 74 , and is configured so as not to protrude from the first connecting member 50 and the resilient member mounting portion 74 .
Therefore, there is a very low probability that the deterrent means 18 will strike other items when in use.

The first connecting portion 40 is configured to form a movement space between it and the operating rod body 20 for the first connecting member 50 (described below), and the second connecting portion 42 is configured so that the first fixing protrusion (pin) 60 is disposed around it and the second connecting member 80 that constitutes the connecting portion 32 (on the tool tip side) is inserted and fitted therearound.

The first connecting member 50 is annular and fitted around the approximately cylindrical core member 44, and is configured to be freely movable in the longitudinal direction of the core member 44 and the operating rod main body 20, and is configured to be resilient toward the tip side by a resilient member 70 interposed between the proximal side of the first connecting member 50 and the tip side of the operating rod main body 20.
The first fixing protrusion (pin) 60 is formed in the center of the connecting portion 24 (on the operating rod side) so as to extend radially.
The first fixed protrusion (pin) 60 is formed so as to be able to move in the axial direction of the operating rod 12 relative to the tip tool 14 as the operating rod 12 moves, and so as to be able to rotate in the circumferential direction of the operating rod 12 as the operating rod 12 rotates.

The connecting portion 32 (on the tip tool side) constitutes the mounting portion that is attached to the operating rod 12, and a second connecting member 80 is provided that is formed so that it can connect to the connecting portion 24 on the operating rod 12 side.
The second connecting member 80 has a first fixing groove 90 formed in a region on the side connected to the operating rod 12, which serves as fixing means 16 for stopping the first fixing protrusion (pin) 60 disposed in the connecting portion 24 on the operating rod 12 side. The first fixing groove 90 fits the first fixing protrusion (pin) 60, and constitutes fixing means 16 for fixing the first fixing protrusion (pin) 60 when the connecting portion 24 (on the operating rod side) and the connecting portion 32 (on the tool bit side) are connected.

The first connecting member 50 and the second connecting member 80 have almost the same or similar outer shapes, and in this embodiment, they are cylindrical with a circular cross section, and the diameters of their outer surfaces have the same or similar dimensions.
Therefore, there is almost no step at the boundary between the second connecting member 80 and the first connecting member 50, and the probability of hitting something is extremely low.

The first connecting member 50 and the second connecting member 80 are configured so that their contacting surfaces are in close contact with each other, and the first connecting member 50 is configured to press the second connecting member 80 by the biasing force of the restraining means 18 (resilient member 70).
In this embodiment, the leading end surface 50E of the first connecting member 50 is a flat surface perpendicular to the axial direction, and the rear end surface 80E of the second connecting member 80 is a flat surface perpendicular to the axial direction. Therefore, the leading end surface 50E of the first connecting member 50 and the rear end surface 80E of the second connecting member 80 are in close contact with each other.

The surface of the resilient member mounting portion 72 at the rear end of the first connecting member 50 facing the resilient member mounting portion 74 is a plane perpendicular to the axial direction, while the opposing surface at the tip of the resilient member mounting portion 74 is a plane perpendicular to the axial direction, allowing the restraining means 18 (resilient member 70) sandwiched between them to bias the first connecting member 50 parallel to the axial direction.

The diameter of the restraining means 18 (resilient member 70) is shorter than the diameter of the first connecting member 50 and the resilient member mounting portion 74, and is configured so as not to protrude from the first connecting member 50 and the resilient member mounting portion 74.

The first fixing groove 90 has a first groove portion 90A that opens toward the operating rod 12, a second groove portion 90B that opens subsequent to the first groove portion 90A, and a third groove portion 90C that opens subsequent to the second groove portion 90B. The first groove portion 90A extends in the longitudinal direction, the second groove portion 90B extends in the circumferential direction, and the third groove portion 90C extends in the longitudinal direction and forms a dead end.
The first fixing groove 90 is formed in an L-shape when viewed from above, and is configured so that when the tip tool 14 is attached to the operating rod 12, the first fixing protrusion (pin) 60 stops in the third groove portion 90C and does not move.
The first fixing groove 90 has a depth that allows the head of the fitted first fixing protrusion (pin) 60 to protrude slightly, and a width that allows the shaft of the fitted first fixing protrusion (pin) 60 to move.

With the above configuration, the second connecting member 80 presses the fixing means 16 (first fixing protrusion (pin) 60) that protrudes radially and is fixed to the second connecting part 42 of the first connecting part 40 that is connected to the operating rod body 20 at the bottom of the third groove 90C toward the tip side (mounting portion) with the biasing force of the resilient member 70 and the second resilient member 76, engaging the third groove 90C with the fixing means 16 (first fixing protrusion (pin) 60), preventing the second connecting member 80 from moving in the unlocking direction.

The first fixing protrusion (pin) 60 is provided to protrude in the radial direction of the first connecting member 50,
The first fixing groove 90 has a depth that allows the head of the fitted first fixing protrusion (pin) 60 to protrude slightly, and a width that allows the shaft of the fitted first fixing protrusion (pin) 60 to move.

The first groove 90A extends so that the fixing means 16 (first fixing protrusion (pin) 60) can be advanced toward the tip, i.e., it extends in the direction connecting the operating rod 12 to the tool tip 14, and in this embodiment is configured as a groove parallel to the axial direction.

The second groove 90B has a length that allows the fixing means 16 (first fixing protrusion (pin) 60) that has advanced radially from the first groove 90A to a position where it will not return to the first groove 90A. In this embodiment, the second groove 90B is configured as a groove perpendicular to the axial direction.

The first groove portion 90A, the second groove portion 90B, and the third groove portion 90C are grooves having similar widths, and each is configured as an L-shaped bent groove.
The width and depth of these are configured so that the first fixing protrusion (pin) 60 and the second fixing protrusion (plunger) 62 can be advanced in the direction in which the groove extends with the first fixing protrusion (pin) 60 and the second fixing protrusion (plunger) 62 fitted therein.

The third groove 90C extends so that the fixing means 16 (first fixing protrusion (pin) 60) can be advanced toward the proximal side; that is, it extends in the opposite direction from the direction in which the operating rod 12 is connected to the tool bit 14. It acts as a dead end so that the fixing means 16 (first fixing protrusion (pin) 60) that has advanced to a position where it can no longer move radially along the second groove 90B cannot advance any further in the opposite direction from the connecting direction.

The fixing means 16 (first fixing protrusion (pin) 60) is fixed to a recess that constitutes the second connecting portion 42, and the portion that protrudes from the outer surface of the recess that constitutes the second connecting portion 42 functions as the fixing protrusion.

The second connecting member 80 constitutes an attachment portion that is attached to the (tip) tool portion 30 and connected to the operating rod 12, and is provided with a first connecting portion 82 that is an end tool attachment portion that is attached to the (tip) tool portion 30, and a second connecting portion 84 that is thicker than the first connecting portion 82 that is an end tool attachment portion.
The first connecting portion 82 is fitted into the attachment portion of the (tip) tool portion 30 and fixed to the (tip) tool portion 30 by an appropriate fixing device, such as a pin.
The second connecting portion 84 constitutes a hollow core member mounting portion, and is formed with a rod body side connecting portion mounting hole 94 into which the core member 44 is fitted.
The second connecting portion 84 has a columnar core member mounting portion 96 provided in the rod body side connecting portion mounting hole 94 .
The columnar core member mounting portion 96 is inserted into the annular hollow portion 46 between the second connecting portion 42 of the core member 44 and the (second) operating rod mounting member 28, and is connected in contact with the tip side of the (second) operating rod mounting member 28.

The (second) operating rod mounting member 28 is aligned in series with the columnar core member mounting portion 96 and is mounted at the second connecting portion 42 of the core member 44 .
The columnar core member attachment portion 96 is configured to abut against a proximal portion of the second connecting member 80, and a second resilient member 76 is disposed in a second hollow portion 46b that exists between the proximal end of the columnar core member attachment portion 96 and the boundary wall portion of the first hollow portion 46a of the hollow portion 46. The second resilient member 76 is formed of a coil spring or the like that is formed to resilient the columnar core member attachment portion 96 toward the proximal side or the tip side.

The second resilient member 76 constituting the restraining means 18 contracts when locked, pushing the core member attachment portion 96 and the second connecting portion 84 toward the tip side (Types 1 to 3).
The second resilient member 76 always presses the core member attachment portion 96 and the second connecting portion 84 toward the tip, and in the locked state is in a slightly contracted state, and when the second connecting member 80 is pulled toward the front during the release operation, it becomes further contracted.

As shown in Figure 3(B), the columnar core member mounting portion 96 is fitted into the hollow portion 46 of the second connecting portion 42 and is fixed to the (second) operating rod mounting member 28 with a retaining screw 28a.

The columnar core member mounting portion 96 has a shape that is inserted into the second hollow portion 46b formed in the hollow portion provided in the second connecting portion 42, and in this embodiment is configured in a cylindrical shape that can slide within the hollow portion.
The columnar core member mounting portion 96 has a bottomed hole drilled on the proximal side that is configured to allow the (second) operating rod mounting member 28 to be fitted into it, and is configured so that the (second) operating rod mounting member 28 can be connected to the columnar core member mounting portion 96.

The columnar core member mounting portion 96 has a shape that is inserted into the second hollow portion 46b formed in the hollow portion provided in the second connecting portion 42, and in this embodiment is configured in a cylindrical shape that can slide within the hollow portion.
The columnar core member mounting portion 96 has a bottomed hole drilled on the proximal side that is configured to allow the (second) operating rod mounting member 28 to be fitted into it, and is configured so that the (second) operating rod mounting member 28 can be connected to the columnar core member mounting portion 96.

The (second) operating rod mounting member 28 extends proximally from the columnar core member mounting portion 96, with the second resilient member 76 interposed around it. The head portion protruding into the third hollow portion 46c is fixed to the first hollow portion 46a and is suspended within the second hollow portion 46b.

The first connecting member 50 and the second connecting member 80 have substantially the same or similar outer shapes, and in this embodiment, they are cylindrical with a circular cross section, and the diameters of their outer surfaces are the same or similar.
Therefore, there is almost no step at the boundary between the second connecting member 80 and the first connecting member 50, and the probability of hitting something is extremely low.

The first connecting member 50 and the second connecting member 80 are configured so that their contacting surfaces are in close contact with each other, and the first connecting member 50 presses the second connecting member 80 with a uniform force due to the biasing force of the restraining means 18 (resilient member 70).

The surface of the resilient member mounting portion 72 at the rear end of the first connecting member 50 facing the resilient member mounting portion 74 is a plane perpendicular to the axial direction, while the opposing surface at the tip of the resilient member mounting portion 74 is a plane perpendicular to the axial direction, allowing the restraining means 18 (resilient member 70) sandwiched between them to bias the first connecting member 50 with a force parallel to the axial direction.

The first connecting member 50 is arranged on the operating rod 12 so as to be movable in the axial direction of the operating rod 12, and when a tip tool 14 is attached to the operating rod 12, it is fixed to the area of the second connecting member 80 on the operating rod 12 side to control the movement of the second connecting member 80, and is formed so that the connecting portion 24 (on the operating rod side) does not come off the first fixing groove 90 of the second connecting member 80.
The first connecting member 50 has a fixing means 16 for controlling the movement of the second connecting member 80 .

The fixing means 16 of the core member 44 has a male screw portion 48 on the outer periphery of the area in which the first connecting member 50 is loaded and in which the first connecting member 50 is interposed, while the fixing means 16 of the first connecting member 50 has a female screw portion 58 inside the tube in the area in which the core member 44 is interposed.
The fixing means 16 of the first connecting member 50 is screwed to the fixing means 16 of the core member 44, and by turning the first connecting member 50, it can be moved in the longitudinal direction of the operating rod 12, and can be stopped at a position suitable for pressing the second connecting member 80 by the first connecting member 50.

In this embodiment, the operating rod body 20 of the operating rod 12 is a rod body with an approximately circular cross section, the first connecting portion 40 and the second connecting portion 42 of the core member 44 are rod-shaped bodies with an approximately circular cross section, the first connecting member 50 is an annular body with an approximately circular cross section, and the second connecting member 80 is an annular body with an approximately circular cross section.
The operating rod body 20, core member 44, first connecting member 50 and second connecting member 80 of the operating rod 12 are arranged in parallel with each other, with the center line extending in the axial direction of the rod body being concentric.
The first connecting member 50 is arranged around the second connecting portion 42 of the core member 44, and the second connecting member 80 is arranged around the tip side of the core member 44, and the tip side edge of the first connecting member 50 and the proximal side edge of the second connecting member 80 are formed to face each other.

Next, the operation method will be explained below, assuming that an insulated operating rod 12 equipped with the connecting structure 10 according to the embodiment is used to operate an indirect live line tip tool 14 connected to the tip of the insulated operating rod 12 in order to form an overhead distribution line bypass circuit.
First, as shown in Figures 1 and 2, in order for an operator to attach the tip tool 14 for indirect live-line work to the tip of the insulated operating rod 12, the connecting portion 24 (on the operating rod side) of the insulated operating rod 12, which constitutes the connecting structure 10, is connected to the connecting portion 32 (on the tip tool side) of the tip tool 14.
Specifically, the axis of the connecting portion 24 on the operating rod 12 side (operating rod side) is aligned with the axis of the connecting portion 32 on the tip tool 14 side (tip tool side), and the first fixing convex portion (pin) 60 is aligned with the first groove portion 90A of the first fixing groove 90.
Next, the operating rod 12 is moved toward the tip tool 14, and the first fixing protrusion (pin) 60 is inserted up to the second groove portion 90B of the first fixing groove 90. When it reaches the groove wall on the tip tool 14 side of the second groove portion 90B, the operating rod 12 is rotated circumferentially, and the first fixing protrusion (pin) 60 is advanced along the groove of the second groove portion 90B toward the third groove portion 90C.
When the connecting structure 10 reaches the mouth of the third groove portion 90C, i.e., when it reaches the dead end of the second groove portion 90B, the operating rod 12 is pulled back from the tip tool 14 side toward the handle, and the first fixing protrusion (pin) 60 is inserted into the third groove portion 90C.
Therefore, by turning the first connecting member 50, the male threaded portion 48 of the first connecting member 50 and the female threaded portion 58 of the core member 44 act to move the first connecting member 50 in the longitudinal direction of the operating rod 12, and the first connecting member 50 moves the second connecting member 80 to a position where it presses against the second connecting member 80, firmly connecting the connecting portion 24 (on the operating rod side) of the operating rod 12 and the connecting portion 32 (on the tip tool side) of the tip tool 14.

Next, the process of unlocking the connecting portion 24 (on the operating rod side) of the operating rod body 20 and the connecting portion 32 (on the tip tool side) of the tool portion (tip tool portion) 30 in the connecting structure 10 will be described primarily with reference to Figure 4. To do this, the first connecting member 50 is rotated to disengage the male thread portion 48 from the female thread portion 58 and move it toward the handle. Then, the connecting portion 24 (on the operating rod side) of the operating rod body 20 is moved toward the tip (the second connecting member 80 pushes the first connecting member 50 toward the handle) to remove the first fixing protrusion (pin) 60 constituting the fixing means 16 from the third groove 90C. The operating rod 12 is then rotated to move the first fixing protrusion (pin) 60 along the second groove 90B until it is positioned in the first groove 90A of the first fixing groove 90. By moving the operating rod 12 toward the handle to remove the first fixing protrusion (pin) 60 from the first fixing groove 90, the connecting portion 24 (on the operating rod side) of the operating rod 12 and the connecting portion 32 (on the handle side) of the tool tip 14 can be separated.

(Second embodiment)

Next, a connecting structure according to a second embodiment, which is a modification of the first embodiment, will be described mainly with reference to FIGS.
In addition, in the description of the connecting structure of the second embodiment, which is a modified example of the first embodiment, the same components and elements as those of the connecting structure 10 of the first embodiment shown in Figures 1 to 9 will be given the same symbols, and the description of the common components and elements will be omitted.
The following description will focus on the characteristic constituent elements and components of the connection structure that is a modification of the first embodiment.

The connecting structure 10, which is a second embodiment of the present invention, is a connecting structure that connects an operating rod 12 that constitutes a rod body and a connecting portion of a tool tip 14 that constitutes a connected part that is connected to the operating rod 12.

The operating rod 12 comprises a long, cylindrical operating rod body 20, a gripping portion 22 attached to the rear end, i.e., the front side, of the operating rod body 20, and a connecting portion 24 (on the operating rod side) formed at the tip end, i.e., the area attached to the tool tip 14, of the operating rod body 20.

The tip tool 14, such as a tool for indirect live-line construction, is composed of, for example, a stripper for stripping the insulating coating of a live overhead distribution line, pliers, a fastening tool, and the like.
The tip tool 14 comprises a tool portion 30 that directly contacts an electric wire, etc., and a connecting portion 32 (on the tip tool side) that constitutes the connected portion and is formed in the area where the tool portion 30 is connected to the operating rod 12.

The connecting portion 24 on the side of the operating rod 12, which is a rod body, and the connecting portion 32 on the side of the connected part are arranged in parallel, with the center line extending in the axial direction of the rod body being concentric, and a convex portion is formed on one side and a concave portion is formed on the other, and the convex portion and the concave portion are configured to be combined and connected.
In this embodiment, a core member 44 forming a convex portion is formed in the connecting portion 24 (on the operating rod side), and a rod body side connecting portion mounting hole 94 forming a concave portion is formed in the connecting portion 32 (on the tip tool side).
The core member 44 is a rod-shaped body with an approximately circular cross section, and the rod-side connecting part mounting hole 94 is an annular body with an approximately circular cross section, and is arranged concentrically with the center line extending in the axial direction of the rod body, and is configured so that by combining the core member 44 with the rod-side connecting part mounting hole 94, the connecting part 24 on the operating rod 12 side and the connecting part 32 on the connected part side are connected.

The operating rod 12 is provided with a fixing means 16 in the area on the side connected to the tip tool 14, which fixes the tip tool 14 and prevents the components connected by the connecting structure from separating, thereby constituting a separation prevention means.
Furthermore, in the area of the operating rod 12 that is connected to the tip tool 14, a restraining means 18 is arranged that constitutes a separation prevention means that prevents the operation rod 12 and the tip tool 14 from moving to prevent the connection between them from coming loose, and prevents the items connected by the connecting structure from separating.

The connecting portion 24 of the operating rod 12, which constitutes the connecting portion of the rod body, is composed of a core member 44, in which a first connecting portion 40, which is thinner than the operating rod main body 20, is formed on the side where it is connected to the operating rod main body 20, and a second connecting portion 42, which is thicker than the first connecting portion 40, is connected to the tip tool 14 side of the first connecting portion 40.

The core member 44 that constitutes the connecting portion 24 (on the operating rod side) of the operating rod body 20 is connected to the operating rod body 20 by an operating rod mounting member (the (first) operating rod mounting member 26 and the fixing pins 26a and 26b).

(1) In this embodiment, the operating rod mounting member 26 and the core member 44 are fitted into a recess 20a provided on the tip side of the operating rod main body 20, as shown in Figures 12 and 13, and are fixed by fixing pins 26a and 26b.
The first connecting portion 40 of the core member 44 is fitted around the (first) operating rod mounting member 26 and fitted into a recessed portion 20a provided at the tip of the operating rod main body 20, and is fixed to the operating rod main body 20.

In this embodiment, the connecting portion 24 (on the operating rod side) includes a core member 44 that constitutes a first connecting portion 40 and a second connecting portion 42 .
The core member 44 has a hollow cylindrical shape and is disposed around the operating rod mounting members (the (first) operating rod mounting member 26 and the (second) operating rod mounting member 28).

In this embodiment, the core member 44 has a proximal side that forms a first connecting portion 40 formed of a cylindrical portion thinner than the operating rod body 20 so that it can be attached to the operating rod body 20, and a distal side that forms a second connecting portion 42 formed of a thicker cylindrical portion thicker than the thin proximal first connecting portion 40.

The core member 44 has a hollow annular portion 46 drilled in the longitudinal direction.
The hollow portion 46 has a first hollow portion 46a that is elongated and narrowed at approximately the center, and a second hollow portion 46b that is relatively thick and has a diameter longer than that of the first hollow portion 46a is formed further towards the tip side of the first hollow portion 46a.
Furthermore, the hollow portion 46 has a third hollow portion 46c formed on the proximal side of the first hollow portion 46a, the third hollow portion 46c being relatively thick and having a diameter greater than that of the first hollow portion 46a.

The core member 44 has an operating rod attachment member ((first) operating rod attachment member 26) disposed in the third hollow portion 46c of the hollow portion 46 for attachment to the operating rod body 20.
The operating rod mounting member ((first) operating rod mounting member 26) is fixed to the tip of the operating rod main body 20, and the third hollow portion 46c of the core member 44 is fitted around and attached to the (first) operating rod mounting member 26.
(Second) The operating rod mounting member 28 is inserted into the hollow portion 46, with its proximal end positioned within the third hollow portion 46c, and its distal end being slidably fitted into the first hollow portion 46a, and furthermore, the distal end extending through the second hollow portion 46b towards the distal end and connected to the columnar core member mounting portion 96.
In this embodiment, the (second) operating rod mounting member 28 is a cylindrical rod body with a head portion having a diameter greater than that of the first hollow portion 46a on the proximal side and a rod-shaped body portion having approximately the same diameter as the first hollow portion 46a on the distal side. Therefore, the second hollow portion 46b leaves a hollow portion between itself and the (second) operating rod mounting member 28, and is configured so that the second resilient member can be fitted therein.

The connecting portion on the rod body side and the connecting portion on the connected portion side have a first fixing convex portion 60 formed on one side as a fixing means forming a convex portion, and a first fixing groove 90 formed on the other side as a fixing means forming a concave portion, and are configured so that the convex portion 62c and the concave portion 92a are combined and connected.

The fixing means 16 is formed of a first fixing protrusion (pin) 60 that constitutes a separation prevention means and is formed on the connecting portion on the rod body side.
The fixing means formed on the second connecting member 80 or the fixing means formed on the core member 44 is constituted by a fixing groove 90 formed at a corresponding position on the core member 44 and/or the second connecting member 80, which constitutes a tortuous separation prevention means.

In this embodiment, the core member 44 has a first fixing protrusion (pin) 60 attached to it on the side of the second connecting portion 42, which constitutes the fixing means 16. A resilient member 70, which constitutes the restraining means 18, may also be interposed around it on the side of the first connecting portion 40.

A first connecting member 50 is disposed on the connecting portion 24 (on the operating rod side).
In this second embodiment, the connecting portion 24 (on the operating rod side) is not provided with the resilient member 70 that constitutes the restraining means 18, but it may be provided on the proximal side of the core member 44.
A resilient member mounting portion 72 for fastening the distal end of the resilient member 70 is formed on the proximal side of the first connecting member 50 .
Furthermore, the operating rod body 20 of the operating rod 12 has a spring member mounting portion 74 formed on the tip side on the side facing the outer surface of the first connecting member 50 on the hand side, for securing the rear end side of the spring member 70.
The resilient member 70 constituting the restraining means 18 may be configured to bias the first connecting member 50 toward the second connecting member 80 when the tip tool 14 is attached to the operating rod 12 .

The connecting portion 24 (on the operating rod side) has a core member 44 fixed to the center of the tip of the operating rod body 20, and a first connecting member 50 is arranged around the core member 44.
Furthermore, the connecting portion 24 (on the operating rod side) is provided with a restraining means 18 around the proximal side of the core member 44, which is composed of a resilient member 70 such as a coil spring that is formed so as to resiliently repel from the proximal side of the operating rod 12 toward the tip tool 14 side.
The first connecting portion 40 is configured to form a movement space for the first connecting member 50 described later between it and the operating rod main body 20, and the second connecting portion 42 is configured to have the first fixing protrusion (pin) 60 arranged thereon, around which the second connecting member 80 constituting the connecting portion 32 (on the tip tool side) is inserted and fitted.

The first connecting member 50 is annular, fitted around the substantially cylindrical core member 44, and configured to thread in the longitudinal direction of the core member 44 and the operating rod body 20. A resilient member 70 (not shown) is interposed between the proximal side of the first connecting member 50 and the distal end side of the operating rod body 20, so that the first connecting member 50 is resilient toward the distal end side.
The first fixing protrusion (pin) 60 is formed in the center of the connecting portion 24 (on the operating rod side) so as to extend radially.
The first fixing protrusion (pin) 60 is formed so as to be able to move in the axial direction of the operating rod 12 relative to the tip tool 14 as the operating rod 12 moves, and so as to be able to rotate in the circumferential direction of the operating rod 12.

The connecting portion 32 (on the tip tool side) constitutes the mounting portion that is attached to the operating rod 12, and a second connecting member 80 is provided that is formed so that it can connect to the connecting portion 24 on the operating rod 12 side.
The second connecting member 80 has a first fixing groove 90 formed in a region on the side connected to the operating rod 12, for stopping the first fixing protrusion (pin) 60 disposed on the connecting portion 24 on the operating rod 12 side. The first fixing groove 90 fits the first fixing protrusion (pin) 60, and constitutes the fixing means 16 for fixing the first fixing protrusion (pin) 60 when the connecting portion 24 (on the operating rod side) and the connecting portion 32 (on the tool accessory side) are connected.

The first fixing groove 90 has a first groove portion 90A that opens toward the operating rod 12, a second groove portion 90B that opens subsequent to the first groove portion 90A, and a third groove portion 90C that opens subsequent to the second groove portion 90B. The first groove portion 90A extends in the longitudinal direction, the second groove portion 90B extends in the circumferential direction, and the third groove portion 90C extends in the longitudinal direction and forms a dead end.
The first fixing groove 90 is formed in an L-shape when viewed from above, and is configured so that when the tip tool 14 is attached to the operating rod 12, the first fixing protrusion (pin) 60 stops in the third groove portion 90C and does not move.
The first fixing groove 90 has a depth that allows the head of the fitted first fixing protrusion (pin) 60 to protrude slightly, and a width that allows the shaft of the fitted first fixing protrusion (pin) 60 to move.

With the above configuration, the second connecting member 80 presses the fixing means 16 (first fixing protrusion (pin) 60) that protrudes radially and is fixed to the second connecting part 42 of the first connecting part 40 that is connected to the operating rod body 20 at the bottom of the third groove 90C toward the tip side (mounting portion) with the biasing force of the resilient member 70 and the second resilient member 76, engaging the third groove 90C with the fixing means 16 (first fixing protrusion (pin) 60), preventing the second connecting member 80 from moving in the unlocking direction.

The first fixing protrusion (pin) 60 is provided to protrude in the radial direction of the first connecting member 50,
The first fixing groove 90 has a depth that allows the head of the fitted first fixing protrusion (pin) 60 to protrude slightly, and a width that allows the shaft of the fitted first fixing protrusion (pin) 60 to move.

The second connecting member 80 constitutes an attachment portion that is attached to the (tip) tool portion 30 and connected to the operating rod 12, and is provided with a first connecting portion 82 that is an end tool attachment portion that is attached to the (tip) tool portion 30, and a second connecting portion 84 that is thicker than the first connecting portion 82 that is an end tool attachment portion.
The first connecting portion 82 is fitted into the attachment portion of the (tip) tool portion 30 and fixed to the (tip) tool portion 30 by an appropriate fixing device, such as a pin.
The second connecting portion 84 constitutes a hollow core member mounting portion, and is formed with a rod body side connecting portion mounting hole 94 into which the core member 44 is fitted.
The second connecting portion 84 has a columnar core member mounting portion 96 provided in the rod body side connecting portion mounting hole 94 .
The columnar core member mounting portion 96 is inserted into the annular hollow portion 46 between the second connecting portion 42 of the core member 44 and the (second) operating rod mounting member 28, and is connected in contact with the tip side of the (second) operating rod mounting member 28.

The (second) operating rod mounting member 28 is aligned in series with the columnar core member mounting portion 96 and is mounted at the second connecting portion 42 of the core member 44 .
The columnar core member mounting portion 96 is configured to abut against the proximal portion of the second connecting member 80, and a second resilient member 76 such as a coil spring is arranged in the second hollow portion 46b that exists between the proximal end of the columnar core member mounting portion 96 and the boundary wall portion of the first hollow portion 46a of the hollow portion 46. The second resilient member 76 is formed to resilient the columnar core member mounting portion 96 toward the proximal or distal end.
This second resilient member 76 may be omitted.

As shown in Figure 10, the columnar core member mounting portion 96 is fitted into the hollow portion 46 of the second connecting portion 42 and is fixed to the (second) operating rod mounting member 28 with a retaining screw 28a.

Furthermore, the columnar core member mounting portion 96 has a third resilient member 98, such as a coil spring, arranged in a recess formed in the rod body side connecting portion mounting hole 94 of the second connecting member 80 at its tip side, so as to resiliently repel from the tip tool 14 side toward the operating rod 12 side.
The third resilient member 98 may be fixed to the tip side of the columnar core member mounting portion 96, or may be fixed by being inserted into a recess 32a formed in the center of the connecting portion 32 (on the tool tip side).

The third spring member 98, which constitutes the restraining mechanism 18, pushes the second connecting member 80 toward the tip when locked. (Type 2)

The first connecting member 50 is arranged on the operating rod 12 so as to be movable in the axial direction of the operating rod 12, and when a tip tool 14 is attached to the operating rod 12, it is fixed to the area of the second connecting member 80 on the operating rod 12 side to control the movement of the second connecting member 80, and is formed so that the connecting portion 24 (on the operating rod side) does not come off the first fixing groove 90 of the second connecting member 80.
The first connecting member 50 has a fixing means 16 for controlling the movement of the second connecting member 80 .

The fixing means 16 of the core member 44 is composed of a male screw portion 48 provided on the outer periphery of the area in which the first connecting member 50 is loaded and in which the first connecting member 50 is interposed, while the fixing means 16 of the first connecting member 50 is composed of a female screw portion 58 provided within the tube in the area in which the core member 44 is interposed.
The female screw portion 58 that constitutes the fixing means 16 of the first connecting member 50 is screwed into the male screw portion 48 that constitutes the fixing means 16 of the core member 44, and by turning the first connecting member 50, it can be moved in the longitudinal direction of the operating rod 12, and can be stopped at a position suitable for pressing the second connecting member 80 by the first connecting member 50.

In this embodiment, the operating rod body 20 of the operating rod 12 is a rod body with an approximately circular cross section, the first connecting portion 40 and the second connecting portion 42 of the core member 44 are rod-shaped bodies with an approximately circular cross section, the first connecting member 50 is an annular body with an approximately circular cross section, and the second connecting member 80 is an annular body with an approximately circular cross section.
The operating rod body 20, core member 44, first connecting member 50 and second connecting member 80 of the operating rod 12 are arranged in parallel with each other, with the center line extending in the axial direction of the rod body being concentric.
The first connecting member 50 is arranged around the second connecting portion 42 of the core member 44, and the second connecting member 80 is arranged around the tip side of the core member 44, and the tip side edge of the first connecting member 50 and the proximal side edge of the second connecting member 80 are formed to face each other.

Next, the operation method will be explained below, assuming that an insulated operating rod 12 equipped with the connecting structure 10 according to the embodiment is used to operate an indirect live line tip tool 14 connected to the tip of the insulated operating rod 12 in order to form an overhead distribution line bypass circuit.
First, as shown in Figures 10 and 11, in order for an operator to attach the tip tool 14 for indirect live-line work to the tip of the insulated operating rod 12, the connecting portion 24 (on the operating rod side) of the insulated operating rod 12, which constitutes the connecting structure 10, is connected to the connecting portion 32 (on the tip tool side) of the tip tool 14.
Specifically, the axis of the connecting portion 24 on the operating rod 12 side (operating rod side) is aligned with the axis of the connecting portion 32 on the tip tool 14 side (tip tool side), and the first fixing convex portion (pin) 60 is aligned with the first groove portion 90A of the first fixing groove 90.
Next, the operating rod 12 is moved toward the tip tool 14, and the first fixing protrusion (pin) 60 is inserted up to the second groove portion 90B of the first fixing groove 90. When it reaches the groove wall on the tip tool 14 side of the second groove portion 90B, the operating rod 12 is rotated circumferentially, and the first fixing protrusion (pin) 60 is advanced along the groove of the second groove portion 90B toward the third groove portion 90C.
When the connecting structure 10 reaches the mouth of the third groove portion 90C, i.e., when it reaches the dead end of the second groove portion 90B, the operating rod 12 is pulled back from the tip tool 14 side toward the handle, and the first fixing protrusion (pin) 60 is inserted into the third groove portion 90C.
Therefore, by turning the first connecting member 50, the male threaded portion 48 of the first connecting member 50 and the female threaded portion 58 of the core member 44 act to move the first connecting member 50 in the longitudinal direction of the operating rod 12, and the first connecting member 50 moves the second connecting member 80 to a position where it presses against the second connecting member 80, firmly connecting the connecting portion 24 (on the operating rod side) of the operating rod 12 and the connecting portion 32 (on the tip tool side) of the tip tool 14.

Next, referring primarily to Figure 11, we will explain how to unlock the connecting portion 24 (on the operating rod side) of the operating rod body 20 and the connecting portion 32 (on the tip tool side) of the tool portion (tip tool portion) 30 in the connecting structure 10. To do this, rotate the first connecting member 50 to disengage the male thread portion 48 from the female thread portion 58 and move it toward the handle. Then, by moving the connecting portion 24 (on the operating rod side) of the operating rod body 20 toward the tip side (by pushing the first connecting member 50 toward the handle with the second connecting member 80), the first fixing convex portion (pin) 60 constituting the fixing means 16 is removed from the third groove 90C. The operating rod 12 is then rotated to move the first fixing convex portion (pin) 60 along the second groove 90B. When it is positioned in the first groove 90A of the first fixing groove 90, the operating rod 12 is moved toward the handle to remove the first fixing convex portion (pin) 60 from the first fixing groove 90, thereby separating the connecting portion 24 (on the operating rod side) of the operating rod 12 and the connecting portion 32 (on the handle side) of the tip tool 14.

(Third embodiment)

Next, a connecting structure according to a third embodiment, which is a modification of the first embodiment, will be described mainly with reference to FIGS.
In addition, in the description of the connecting structure of the third embodiment, which is a modified example of the first embodiment, the same components and elements as those of the connecting structure 10 of the first embodiment shown in Figures 1 to 9 will be given the same symbols, and the description of the common components and elements will be omitted.
The following description will focus on the characteristic constituent elements and components of the connection structure that is a modification of the first embodiment.

The connecting structure 10, which is a third embodiment of the present invention, is a connecting structure that connects an operating rod 12 that constitutes a rod body and a connecting portion of a tool tip 14 that constitutes a connected part that is connected to the operating rod 12.

The operating rod 12 comprises a long, cylindrical operating rod body 20, a gripping portion 22 attached to the rear end, i.e., the front side, of the operating rod body 20, and a connecting portion 24 (on the operating rod side) formed at the tip end, i.e., the area attached to the tool tip 14, of the operating rod body 20.

The tip tool 14, such as a tool for indirect live-line construction, is composed of, for example, a stripper for stripping the insulating coating of a live overhead distribution line, pliers, a fastening tool, and the like.
The tip tool 14 comprises a tool portion 30 that directly contacts an electric wire, etc., and a connecting portion 32 (on the tip tool side) that constitutes the connected portion and is formed in the area where the tool portion 30 is connected to the operating rod 12.

The connecting portion 24 on the side of the operating rod 12, which is a rod body, and the connecting portion 32 on the side of the connected part are arranged in parallel, with the center line extending in the axial direction of the rod body being concentric, and a convex portion is formed on one side and a concave portion is formed on the other, and the convex portion and the concave portion are configured to be combined and connected.
In this embodiment, a core member 44 forming a convex portion is formed in the connecting portion 24 (on the operating rod side), and a rod body side connecting portion mounting hole 94 forming a concave portion is formed in the connecting portion 32 (on the tip tool side).
The core member 44 is a rod-shaped body with an approximately circular cross section, and the rod-side connecting part mounting hole 94 is an annular body with an approximately circular cross section, and is arranged concentrically with the center line extending in the axial direction of the rod body, and is configured so that by combining the core member 44 with the rod-side connecting part mounting hole 94, the connecting part 24 on the operating rod 12 side and the connecting part 32 on the connected part side are connected.

The operating rod 12 is provided with a fixing means 16 in the area on the side connected to the tip tool 14, which fixes the tip tool 14 and prevents the components connected by the connecting structure from separating, thereby constituting a separation prevention means.
Furthermore, in the area of the operating rod 12 that is connected to the tip tool 14, a restraining means 18 is arranged that constitutes a separation prevention means that prevents the operation rod 12 and the tip tool 14 from moving to prevent the connection between them from coming loose, and prevents the items connected by the connecting structure from separating.

The connecting portion 24 of the operating rod 12, which constitutes the connecting portion of the rod body, is composed of a core member 44, in which a first connecting portion 40, which is thinner than the operating rod main body 20, is formed on the side where it is connected to the operating rod main body 20, and a second connecting portion 42, which is thicker than the first connecting portion 40, is connected to the tip tool 14 side of the first connecting portion 40.

The core member 44 that constitutes the connecting portion 24 (on the operating rod side) of the operating rod body 20 is connected to the operating rod body 20 by an operating rod mounting member (the (first) operating rod mounting member 26 and the fixing pins 26a and 26b).

(1) In this embodiment, the operating rod mounting member 26 and the core member 44 are fitted into a recess 20a provided on the tip side of the operating rod body 20, as shown in Figures 17 and 18, and are fixed by fixing pins 26a and 26b.
The first connecting portion 40 of the core member 44 is fitted around the (first) operating rod mounting member 26 and fitted into a recessed portion 20a provided at the tip of the operating rod main body 20, and is fixed to the operating rod main body 20.

In this embodiment, the connecting portion 24 (on the operating rod side) includes a core member 44 that constitutes a first connecting portion 40 and a second connecting portion 42 .
The core member 44 has a hollow cylindrical shape and is disposed around the operating rod mounting members (the (first) operating rod mounting member 26 and the (second) operating rod mounting member 28).

In this embodiment, the core member 44 has a proximal side that forms a first connecting portion 40 formed of a cylindrical portion thinner than the operating rod body 20 so that it can be attached to the operating rod body 20, and a distal side that forms a second connecting portion 42 formed of a thicker cylindrical portion thicker than the thin proximal first connecting portion 40.

The core member 44 has a hollow annular portion 46 drilled in the longitudinal direction.
The hollow portion 46 has a first hollow portion 46a that is elongated and narrowed at approximately the center, and a second hollow portion 46b that is relatively thick and has a diameter longer than that of the first hollow portion 46a is formed further towards the tip side of the first hollow portion 46a.
Furthermore, the hollow portion 46 has a third hollow portion 46c formed on the proximal side of the first hollow portion 46a, the third hollow portion 46c being relatively thick and having a diameter greater than that of the first hollow portion 46a.

The core member 44 has an operating rod attachment member ((first) operating rod attachment member 26) disposed in the third hollow portion 46c of the hollow portion 46 for attachment to the operating rod body 20.
The operating rod mounting member ((first) operating rod mounting member 26) is fixed to the tip of the operating rod main body 20, and the third hollow portion 46c of the core member 44 is fitted around and attached to the (first) operating rod mounting member 26.
(Second) The operating rod mounting member 28 is inserted into the hollow portion 46, with its proximal end positioned within the third hollow portion 46c, and its distal end being slidably fitted into the first hollow portion 46a, and furthermore, the distal end extending through the second hollow portion 46b towards the distal end and connected to the columnar core member mounting portion 96.
In this embodiment, the (second) operating rod mounting member 28 is a cylindrical rod body with a head portion having a diameter greater than that of the first hollow portion 46a on the proximal side and a rod-shaped body having a diameter substantially the same as that of the first hollow portion 46a on the distal end side. Therefore, the second hollow portion 46b leaves a hollow portion between itself and the (second) operating rod mounting member 28, and is configured so that the third resilient member 98 can be fitted therein.

In this embodiment, the core member 44 has a first fixing protrusion (pin) 60 attached to it on the side of the second connecting portion 42, which constitutes the fixing means 16. A resilient member 70, which constitutes the restraining means 18, may also be interposed around it on the side of the first connecting portion 40.

The connecting portion 24 (on the operating rod side) has a core member 44 fixed to the center of the tip of the operating rod body 20, and a first connecting member 50 is arranged around the core member 44.
Furthermore, the core member 44 does not have a restraining means 18 arranged around it on the proximal side, which is composed of a resilient member 70 such as a coil spring that is formed so as to resiliently repel the operating rod 12 from the proximal side toward the tip tool 14 side, but it may be arranged on the proximal side of the core member 44.

The connecting portion 24 (on the operating rod side) has a third connecting member 52 disposed on the first connecting portion 40 side inside the hollow portion of the first connecting member 50 .
The first connecting member 50 is an annular body with a circular cross section, and its tip side is fitted into the proximal side of the second connecting member 80 inside the hollow portion.

The third connecting member 52 is a circular ring-shaped body with a circular cross section, is fixed to the inner surface of the first connecting member 50, and is fitted into the second connecting portion 42 of the first connecting portion 40 so as to abut the proximal tip of the second connecting portion 84 of the second connecting member 80.
The third connecting member 52 is a ring-shaped body that is inserted into the second connecting portion 42 of the core member 44 and is formed to be inserted into the inner circumferential surface of the hollow portion side of the first connecting member 50. The tip side of the third connecting member 52 contacts the proximal end edge of the second connecting portion 84 of the second connecting member 80 and also contacts the proximal end edge of the inner circumferential surface of the hollow portion side of the first connecting member 50, and is configured to be interposed between the proximal end edge of the second connecting portion 84 of the second connecting member 80 and the proximal end edge of the inner circumferential surface of the hollow portion side of the first connecting member 50.

The fixing means 16 of the first connecting member 50 and the second connecting member 80 is constituted by a male screw portion 88 provided on the outer periphery of the second connecting member 80 in the area where the first connecting member 50 is interposed, in which the first connecting member 50 is loaded, while the fixing means 16 of the first connecting member 50 is constituted by a female screw portion 58 provided within the tube in the area where the second connecting member 80 is interposed.
The female screw portion 58 constituting the fixing means 16 of the first connecting member 50 is threaded into the male screw portion 88 constituting the fixing means 16 of the second connecting member 80, and by turning the first connecting member 50, it can be moved in the longitudinal direction of the operating rod 12, and can be stopped at a position suitable for pressing the second connecting member 80 by the third connecting member 52 connected to the first connecting member 50.

The connecting portion 24 (on the operating rod side) is not provided with the resilient member 70 that constitutes the restraining means 18, but may be arranged on the proximal side of the core member 44.
In this third embodiment, the second connecting portion 42 of the first connecting portion 40 has a resilient member mounting portion 72 formed on the proximal side of the area into which the first connecting member 50 is inserted, for securing the tip end of the resilient member 70 (not shown).
Furthermore, the operating rod body 20 of the operating rod 12 has a resilient member mounting portion 74 formed on the tip side on the side facing the outer surface of the hand side of the first connecting member 50 for securing the rear end side of the resilient member 70 (not shown).

The first connecting portion 40 is configured to form a movement space between it and the operating rod body 20 for the first connecting member 50 (described below), and the second connecting portion 42 is configured so that the first fixing protrusion (pin) 60 is disposed around it and the second connecting member 80 that constitutes the connecting portion 32 (on the tool tip side) is inserted and fitted therearound.

The first connecting member 50 is annular, fitted around the substantially cylindrical core member 44, and configured to slide in the longitudinal direction of the core member 44 and the operating rod body 20. It may be configured to be resilient toward the tip side by a resilient member 70 (not shown) interposed between the proximal side of the first connecting member 50 and the tip side of the operating rod body 20.
The first fixing protrusion (pin) 60 is formed in the center of the connecting portion 24 (on the operating rod side) so as to extend radially.
The first fixing protrusion (pin) 60 is formed so as to be able to move in the axial direction of the operating rod 12 relative to the tip tool 14 as the operating rod 12 moves, and so as to be able to rotate in the circumferential direction of the operating rod 12.

The connecting portion 32 (on the tip tool side) constitutes the mounting portion that is attached to the operating rod 12, and a second connecting member 80 is provided that is formed so that it can connect to the connecting portion 24 on the operating rod 12 side.
The second connecting member 80 has a first fixing groove 90 formed in a region on the side connected to the operating rod 12, for stopping the first fixing protrusion (pin) 60 disposed on the connecting portion 24 on the operating rod 12 side. The first fixing groove 90 fits the first fixing protrusion (pin) 60, and constitutes the fixing means 16 for fixing the first fixing protrusion (pin) 60 when the connecting portion 24 (on the operating rod side) and the connecting portion 32 (on the tool accessory side) are connected.

The first fixing groove 90 has a first groove portion 90A that opens toward the operating rod 12, a second groove portion 90B that opens subsequent to the first groove portion 90A, and a third groove portion 90C that opens subsequent to the second groove portion 90B. The first groove portion 90A extends in the longitudinal direction, the second groove portion 90B extends in the circumferential direction, and the third groove portion 90C extends in the longitudinal direction and forms a dead end.
The first fixing groove 90 is formed in an L-shape when viewed from above, and is configured so that when the tip tool 14 is attached to the operating rod 12, the first fixing protrusion (pin) 60 stops in the third groove portion 90C and does not move.
The first fixing groove 90 has a depth that allows the head of the fitted first fixing protrusion (pin) 60 to protrude slightly, and a width that allows the shaft of the fitted first fixing protrusion (pin) 60 to move.

The first fixing protrusion (pin) 60 is provided to protrude in the radial direction of the first connecting member 50,
The first fixing groove 90 has a depth that allows the head of the fitted first fixing protrusion (pin) 60 to protrude slightly, and a width that allows the shaft of the fitted first fixing protrusion (pin) 60 to move.

The second connecting member 80 constitutes an attachment portion that is attached to the (tip) tool portion 30 and connected to the operating rod 12, and is provided with a first connecting portion 82 that is an end tool attachment portion that is attached to the (tip) tool portion 30, and a second connecting portion 84 that is thicker than the first connecting portion 82 that is an end tool attachment portion.
The first connecting portion 82 is fitted into the attachment portion of the (tip) tool portion 30 and fixed to the (tip) tool portion 30 by an appropriate fixing device, such as a pin.
The second connecting portion 84 constitutes a hollow core member mounting portion, and is formed with a rod body side connecting portion mounting hole 94 into which the core member 44 is fitted.
The second connecting portion 84 has a columnar core member mounting portion 96 provided in the rod body side connecting portion mounting hole 94 .
The columnar core member mounting portion 96 is inserted into the annular hollow portion 46 between the second connecting portion 42 of the core member 44 and the (second) operating rod mounting member 28, and is connected in contact with the tip side of the (second) operating rod mounting member 28.

The (second) operating rod mounting member 28 is aligned in series with the columnar core member mounting portion 96 and is mounted at the second connecting portion 42 of the core member 44 .
The columnar core member mounting portion 96 is configured to abut against the proximal portion of the second connecting member 80, and a second resilient member 76 such as a coil spring is arranged in the second hollow portion 46b that exists between the proximal end of the columnar core member mounting portion 96 and the boundary wall portion of the first hollow portion 46a of the hollow portion 46. The second resilient member 76 is formed to resilient the columnar core member mounting portion 96 toward the proximal or distal end.

As shown in Figures 16 and 17, the columnar core member mounting portion 96 is fitted into the hollow portion 46 of the second connecting portion 42 and is fixed to the (second) operating rod mounting member 28 with a retaining screw 28a.

The first connecting member 50 is arranged on the operating rod 12 so as to be movable in the axial direction of the operating rod 12, and when a tip tool 14 is attached to the operating rod 12, it is fixed to the area of the second connecting member 80 on the operating rod 12 side to control the movement of the second connecting member 80, and is formed so that the connecting portion 24 (on the operating rod side) does not come off the first fixing groove 90 of the second connecting member 80.
The first connecting member 50 has a fixing means 16 for controlling the movement of the second connecting member 80 .

The first connecting member 50 is configured to cover the first fixing protrusion (pin) 60 that constitutes the fixing means 16 when the tool tip 14 is attached to the operating rod 12, and is configured to enclose the second connecting portion 84 of the second connecting member 80 and the third connecting member 52 within its hollow portion.

The first connecting member 50 and the second connecting portion 84 of the second connecting member 80 are configured to screw in the axial direction by the male screw portion 88 and the female screw portion 58 that constitute the fixing means 16 when the first connecting member 50 is rotated.
In this embodiment, the first connecting member 50 has a female thread portion 58 formed inside the area of the first connecting member 50 that overlaps with the second connecting portion 84 of the second connecting member 80, and the second connecting member 80 has a male thread portion 88 formed outside the area of the second connecting portion 84 that is covered by the first connecting member 50.

In this embodiment, the operating rod body 20 of the operating rod 12 is a rod body with an approximately circular cross section, the first connecting portion 40 and the second connecting portion 42 of the core member 44 are rod-shaped bodies with an approximately circular cross section, the first connecting member 50 is an annular body with an approximately circular cross section, the third connecting member 52 is an annular body with an approximately circular cross section, and the second connecting member 80 is an annular body with an approximately circular cross section.
The operating rod body 20, core member 44, first connecting member 50, third connecting member 52 and second connecting member 80 of the operating rod 12 are arranged in parallel with a center line extending in the axial direction of the rod body being concentric.
The third connecting member 52 is arranged around the second connecting portion 42 of the core member 44, the first connecting member 50 is arranged around the third connecting member 52 and the second connecting portion 84 of the second connecting member 80, and the second connecting member 80 is arranged around the tip side of the core member 44, and the tip side edge of the third connecting member 52 and the proximal side edge of the second connecting member 80 are formed to face each other.

Next, the operation method will be explained below, assuming that an insulated operating rod 12 equipped with the connecting structure 10 according to the embodiment is used to operate an indirect live line tip tool 14 connected to the tip of the insulated operating rod 12 in order to form an overhead distribution line bypass circuit.
First, as shown in Figures 16 and 17, in order for an operator to attach the tip tool 14 for indirect live-line work to the tip of the insulated operating rod 12, the connecting portion 24 (on the operating rod side) of the insulated operating rod 12, which constitutes the connecting structure 10, is connected to the connecting portion 32 (on the tip tool side) of the tip tool 14.
Specifically, the axis of the connecting portion 24 on the operating rod 12 side (operating rod side) is aligned with the axis of the connecting portion 32 on the tip tool 14 side (tip tool side), and the first fixing convex portion (pin) 60 is aligned with the first groove portion 90A of the first fixing groove 90.
Next, the operating rod 12 is moved toward the tip tool 14, and the first fixing protrusion (pin) 60 is inserted up to the second groove portion 90B of the first fixing groove 90. When it reaches the groove wall on the tip tool 14 side of the second groove portion 90B, the operating rod 12 is rotated circumferentially, and the first fixing protrusion (pin) 60 is advanced along the groove of the second groove portion 90B toward the third groove portion 90C.
When the connecting structure 10 reaches the mouth of the third groove portion 90C, i.e., when it reaches the dead end of the second groove portion 90B, the operating rod 12 is pulled back from the tip tool 14 side toward the handle, and the first fixing protrusion (pin) 60 is inserted into the third groove portion 90C.
Therefore, by turning the first connecting member 50, the first connecting member 50 is moved in the longitudinal direction of the operating rod 12 due to the action of the female thread portion 58 of the first connecting member 50 and the male thread portion 88 of the second connecting member 80, and moved to a position where the third connecting member 52 presses the second connecting member 80, thereby firmly connecting the connecting portion 24 (on the operating rod side) of the operating rod 12 and the connecting portion 32 (on the tip tool side) of the tip tool 14.

Next, referring primarily to Figure 17, we will explain how to unlock the (rod-side) connecting portion 24 of the operating rod main body 20 and the (tool-end side) connecting portion 32 of the tool portion (tool end portion) 30 in the connecting structure 10. To do this, rotate the first connecting member 50 toward the handle, move the (rod-side) connecting portion 24 of the operating rod main body 20 toward the tip, and remove the first fixing protrusion (pin) 60 constituting the fixing means 16 from the third groove 90C. Rotate the operating rod 12 to move the first fixing protrusion (pin) 60 along the second groove 90B. Once positioned in the first fixing groove 90, move the operating rod 12 toward the handle to remove the first fixing protrusion (pin) 60 from the first fixing groove 90. This separates the (rod-side) connecting portion 24 of the operating rod 12 from the (tool-end side) connecting portion 32 of the tool end portion 14.

(Fourth embodiment)

Next, a connecting structure according to a fourth embodiment will be described mainly with reference to FIGS.
The same reference numerals are used to designate the components and elements common to the connecting structure 10 of the first embodiment shown in FIGS. 1 to 9, and the description of the common components and elements will be omitted.
The following description will focus on the characteristic constituent elements and components of the connecting structure of the fourth embodiment.

The fourth embodiment of the present invention, a connecting structure 10, is a connecting structure that connects an operating rod 12 that constitutes a rod body to a connecting portion of a tool tip 14 that constitutes a connected part connected to the operating rod 12.

The operating rod 12 comprises a long, cylindrical operating rod body 20, a gripping portion 22 attached to the rear end, i.e., the front side, of the operating rod body 20, and a connecting portion 24 (on the operating rod side) formed at the tip end, i.e., the area attached to the tool tip 14, of the operating rod body 20.

The tip tool 14, such as a tool for indirect live-line construction, is composed of, for example, a stripper for stripping the insulating coating of a live overhead distribution line, pliers, a fastening tool, and the like.
The tip tool 14 comprises a tool portion 30 that directly contacts an electric wire, etc., and a connecting portion 32 (on the tip tool side) that constitutes the connected portion and is formed in the area where the tool portion 30 is connected to the operating rod 12.

The connecting portion 24 on the side of the operating rod 12, which is a rod body, and the connecting portion 32 on the side of the connected part are arranged in parallel, with the center line extending in the axial direction of the rod body being concentric, and a convex portion is formed on one side and a concave portion is formed on the other, and the convex portion and the concave portion are configured to be combined and connected.
In this embodiment, the connecting portion 24 is formed with a core member 44 that forms a convex portion, and the connecting portion 32 is formed with a rod-side connecting portion mounting hole 94 that forms a concave portion.
The core member 44 is a rod-shaped body with an approximately circular cross section, and the rod-side connecting part mounting hole 94 is an annular body with an approximately circular cross section, and is arranged concentrically with the center line extending in the axial direction of the rod body, and is configured so that by combining the core member 44 with the rod-side connecting part mounting hole 94, the connecting part 24 on the operating rod 12 side and the connecting part 32 on the connected part side are connected.

The operating rod 12 is provided with a fixing means 16 in the area on the side connected to the tip tool 14, which fixes the tip tool 14 and prevents the components connected by the connecting structure from separating, thereby constituting a separation prevention means.
Furthermore, in the area of the operating rod 12 that is connected to the tip tool 14, a restraining means 18 is arranged that constitutes a separation prevention means that prevents the operation rod 12 and the tip tool 14 from moving to prevent the connection between them from coming loose, and prevents the items connected by the connecting structure from separating.

The connecting portion 24 of the operating rod 12, which constitutes the connecting portion of the rod body, is composed of a core member 44, in which a first connecting portion 40, which is thinner than the operating rod main body 20, is formed on the side where it is connected to the operating rod main body 20, and a second connecting portion 42, which is thicker than the first connecting portion 40, is connected to the tip tool 14 side of the first connecting portion 40.

The core member 44 that constitutes the connecting portion 24 (on the operating rod side) of the operating rod main body 20 is connected to the operating rod main body 20 by an operating rod mounting member (the (first) operating rod mounting member 26 and the fixing pins 26a and 26b).
(1) The operating rod mounting member 26 is a bottomed circular ring-shaped body that is fitted into the recessed portion 20a of the operating rod main body 20 and is configured to be directly connected by an appropriate fixing means, for example, fixing pins 26a and 26b.

The connecting portion 24 (on the operating rod side) includes a core member 44 that constitutes a first connecting portion 40 and a second connecting portion 42 .
The core member 44 is fitted into a mounting hole 26d drilled in the center of the operating rod mounting member ((first) operating rod mounting member 26), and is connected by the connecting screw 26c.
In this embodiment, the (first) operating rod mounting member 26 is connected to the (first) operating rod mounting member 26 by inserting a connecting screw 26c for connecting the (first) operating rod mounting member 26 to the core member 44 from its proximal side, and then screwing the connecting screw 26c to the proximal side of the core member 44.
The core member 44 is attached to the operating rod body 20 via a (first) operating rod mounting member 26 .

A resilient member 70 constituting the restraining means 18 is disposed on the connecting portion 24 (on the operating rod side).
In this embodiment, the core member 44 has a restraining means 18 arranged around its first connecting portion 40, which is composed of a resilient member 70 such as a coil spring that is formed so as to resiliently repel from the proximal side of the operating rod 12 toward the tip tool 14.

In this embodiment, the core member 44 has a first connecting portion 40 formed of a cylindrical portion thinner than the operating rod main body 20 at the proximal side so as to be attached to the operating rod main body 20, and a second connecting portion 42 formed of a thick cylindrical portion thicker than the thin first connecting portion 40 at the proximal side at the distal end.
In this embodiment, as shown in FIG. 28, the core member 44 is formed by forming a first connecting portion 40 and a second connecting portion 42 as separate members, which are connected by an appropriate pin 44a.

The core member 44 has a first fixing protrusion (pin) 60 that constitutes the fixing means 16 attached to the second connecting portion 42 on the tip side, and a resilient member 70 that constitutes the restraining means 18 is interposed around the first connecting portion 40 on the proximal side.
Furthermore, in this embodiment, the core member 44 has a second fixing groove 92 formed in the second connecting portion 42 for guiding and fixing the second fixing protrusion (plunger) 62 described later in the longitudinal and radial directions of the operating rod 12.

A first connecting member 50 is disposed on the connecting portion 24 (on the operating rod side).
The first connecting member 50 is an annular body with a circular cross section, and its tip side is fitted into the second connecting portion 42 of the first connecting portion 40 inside the hollow portion.
In this embodiment, the connecting portion 24 (on the operating rod side) has a core member 44 fixed to the center at the tip of the operating rod main body 20, and a first connecting member 50 is arranged around the core member 44.

The first connecting portion 40 has a resilient member mounting portion 72 formed on the proximal side of the region into which the first connecting member 50 is fitted, for fastening the tip end of the resilient member 70 .
Furthermore, the operating rod body 20 of the operating rod 12 has a spring member mounting portion 74 formed on the tip side on the side facing the outer surface of the first connecting member 50 on the hand side, for securing the rear end side of the spring member 70.
The first connecting member 50 is installed across the resilient member mounting portion 72 and the resilient member mounting portion 74 so as to surround the resilient member 70 interposed in the core member 44 of the first connecting portion 40, and its tip side is attached to the second connecting portion 42 so as to surround the outer peripheral surface of the second connecting portion 42.

The resilient member 70 constituting the restraining means 18 is configured to bias the first connecting member 50 toward the second connecting member 80 of the second connecting portion 42 constituting the connected portion via the resilient member mounting portion 72 when the tip tool 14 is attached to the operating rod 12.

The connecting portion on the rod side and the connecting portion on the connected part side are configured so that a first fixing convex portion 60, which serves as fixing means 16 forming a convex portion, is formed on one side, and a first fixing groove 90, which serves as fixing means 16 forming a concave portion, is formed on the other side, and the convex portion and concave portion are combined to connect.

The fixing means 16 is formed of a first fixing protrusion (pin) 60 that constitutes a separation prevention means and is formed on the connecting portion on the rod body side.
and/or
The fixing means 16 is formed of a second fixing protrusion (plunger) 62 that constitutes a separation prevention means and is formed on the first connecting member 50 on the rod body side.
The fixing means formed on the second connecting member 80 or the fixing means formed on the core member 44 is constituted by a first fixing groove 90, which is a fixing groove that constitutes a tortuous separation prevention means, formed at a corresponding position on the core member 44 and/or the second connecting member 80.

The first connecting portion 40 of the core member 44 is configured to form a movement space between itself and the operating rod body 20 for a first connecting member 50, which will be described later.
The second connecting portion 42 of the core member 44 has the first fixing protrusion (pin) 60 disposed on the tip side.
Furthermore, the second connecting portion 42 of the core member 44 is formed with a second fixing groove 92 for guiding a second fixing protrusion (plunger) 62 (to be described later).

The first fixing protrusion (pin) 60 is formed so as to extend radially in the second connecting portion 42 of the connecting portion 24 (on the operating rod side).
The first fixed protrusion (pin) 60 is formed so as to be able to move in the axial direction of the operating rod 12 relative to the tip tool 14 as the operating rod 12 moves, and so as to be able to rotate in the circumferential direction of the operating rod 12 as the operating rod 12 rotates.

The second fixing groove 92 has a first groove portion 92A that opens toward the operating rod 12, a second groove portion 92B that opens subsequent to the first groove portion 92A, and a third groove portion 92C that opens subsequent to the second groove portion 92B. The first groove portion 92A extends in the longitudinal direction, the second groove portion 92B extends in the circumferential direction, and the third groove portion 92C extends in the longitudinal direction and forms a dead end.
The second fixing groove 92 is formed in an L-shape when viewed in a plane, and when the tip tool 14 is attached to the operating rod 12, when the first connecting member 50 is turned, the second fixing protrusion (plunger) 62 abuts against the third groove portion 92C, preventing the first connecting member 50 from moving.
The second fixing groove 92 has a depth that allows the head of the second fixing protrusion (plunger) 62 to protrude slightly when it is inserted, and a width that allows the shaft portion of the second fixing protrusion (plunger) 62 to move when it is inserted.

As shown in Figure 24, the second fixed protrusion (plunger) 62 comprises a cylindrical main body 62a, a spring or other biasing body 62b loaded inside the cylindrical main body 62a, and a ball-shaped protrusion 62c whose head protrudes from the lower end of the cylindrical main body 62a due to the biasing body 62b.
The second fixing protrusion (plunger) 62 is provided to protrude radially from the first connecting member 50, and the second fixing groove 92 includes a recess 92a deep enough to slightly fit the protrusion 62c of the fitted second fixing protrusion (plunger) 62, and a planar movement path 92b wide enough to allow movement of the cylindrical body 62a and protrusion 62c of the fitted second fixing protrusion (plunger) 62. The second fixing protrusion (plunger) 62 moves along the movement path 92b in the second fixing groove 92 and fits into the concave recess 92a, controlling the movement of the first connecting member 50. As shown in FIG. 24 , the second fixing groove 92 has recesses 92a provided in the second groove 92B and the third groove 92C.

The first connecting member 50 is annular and fitted around the approximately cylindrical core member 44, and is configured to be freely movable in the longitudinal direction of the core member 44 and the operating rod main body 20, and is configured to be resilient toward the tip side by a resilient member 70 interposed between the proximal side of the first connecting member 50 and the tip side of the operating rod main body 20.
The first connecting member 50 has a hole 50a drilled at the tip side for fixing a second fixing protrusion (plunger) 62, and the second fixing protrusion (plunger) 62 that constitutes the fixing means 16 is fitted and fixed into the hole 50a.

The connecting portion 32 (on the tip tool side) constitutes the mounting portion that is attached to the operating rod 12, and a second connecting member 80 is provided that is formed so that it can connect to the connecting portion 24 on the operating rod 12 side.
The second connecting member 80 has a first fixing groove 90 formed in a region on the side connected to the operating rod 12, for stopping the first fixing protrusion (pin) 60 disposed on the connecting portion 24 on the operating rod 12 side. The first fixing groove 90 fits the first fixing protrusion (pin) 60, and constitutes the fixing means 16 for fixing the first fixing protrusion (pin) 60 when the connecting portion 24 (on the operating rod side) and the connecting portion 32 (on the tool accessory side) are connected.

The first fixing groove 90 has a first groove portion 90A that opens toward the operating rod 12, a second groove portion 90B that opens subsequent to the first groove portion 90A, and a third groove portion 90C that opens subsequent to the second groove portion 90B. The first groove portion 90A extends in the longitudinal direction, the second groove portion 90B extends in the circumferential direction, and the third groove portion 90C extends in the longitudinal direction and forms a dead end.
The first fixing groove 90 is formed in an L-shape when viewed from above, and is configured so that when the tip tool 14 is attached to the operating rod 12, the first fixing protrusion (pin) 60 stops in the third groove portion 90C and does not move.
The first fixing groove 90 has a depth that allows the head of the fitted first fixing protrusion (pin) 60 to protrude slightly, and a width that allows the shaft of the fitted first fixing protrusion (pin) 60 to move.

The first fixing protrusion (pin) 60 protrudes radially from the second connecting portion 42 of the core member 44, and the first fixing groove 90 has a depth that allows the head of the fitted first fixing protrusion (pin) 60 to protrude slightly and a width that allows the shaft of the fitted first fixing protrusion (pin) 60 to move. The first fixing protrusion (pin) 60 moves within the first fixing groove 90 to control the movement of the operating rod 12 and first connecting portion 40.

The second connecting member 80 constitutes an attachment portion that is attached to the (tip) tool portion 30 and connected to the operating rod 12, and is provided with a first connecting portion 82 that is an end tool attachment portion that is attached to the (tip) tool portion 30, and a second connecting portion 84 that is thicker than the first connecting portion 82 that is an end tool attachment portion.
The first connecting portion 82 is fitted into the attachment portion of the (tip) tool portion 30 and fixed to the (tip) tool portion 30 by an appropriate fixing device, such as a pin.
The second connecting portion 84 constitutes a hollow core member mounting portion, and is formed with a rod body side connecting portion mounting hole 94 into which the core member 44 is fitted.
Furthermore, a first fixing groove 90 is formed adjacent to the opening edge of the rod-side connecting portion mounting hole 94 .

The first connecting member 50 is arranged on the side of the operating rod 12 so as to be movable in the axial direction of the operating rod 12, and when a tip tool 14 is attached to the operating rod 12, it is fixed to the area of the second connecting member 80 on the operating rod 12 side to control the movement of the second connecting member 80, and is formed so that the connecting portion 24 (on the operating rod side) does not come off the first fixing groove 90 of the second connecting member 80.
Furthermore, the first connecting member 50 has a fixing means 16 that fixes the first connecting member 50 to the second connecting portion 42 of the first connecting portion 40 in order to control the movement of the second connecting member 80. The fixing means 16 that fixes the first connecting member 50 to the second connecting portion 42 of the first connecting portion 40 is configured by the second fixing protrusion (plunger) 62 described above.

In this embodiment, the operating rod body 20 of the operating rod 12 is a rod body with an approximately circular cross section, the first connecting portion 40 and the second connecting portion 42 of the core member 44 are rod-shaped bodies with an approximately circular cross section, the first connecting member 50 is an annular body with an approximately circular cross section, and the second connecting member 80 is an annular body with an approximately circular cross section.
The operating rod body 20, core member 44, first connecting member 50 and second connecting member 80 of the operating rod 12 are arranged in parallel with each other, with the center line extending in the axial direction of the rod body being concentric.
The first connecting member 50 is arranged around the second connecting portion 42 of the core member 44, and the second connecting member 80 is arranged around the tip side of the core member 44, and the tip side edge of the first connecting member 50 and the proximal side edge of the second connecting member 80 are formed to face each other.

Next, the operation method will be explained below, assuming that an insulated operating rod 12 equipped with the connecting structure 10 according to the fourth embodiment is used to operate an indirect live line tip tool 14 connected to the tip of the insulated operating rod 12 in order to form an overhead distribution line bypass circuit.
First, as shown in Figure 32, in order for the worker to attach the tip tool 14 for indirect live-line work to the tip of the operating rod 12, the connecting portion 24 (on the operating rod side) of the operating rod 12, which constitutes the connecting structure 10, is connected to the connecting portion 32 (on the tip tool side) of the tip tool 14.
Specifically, the axis of the connecting portion 24 on the operating rod 12 side is aligned with the axis of the connecting portion 32 on the tip tool 14 side, and the first fixing convex portion (pin) 60 is aligned with the first groove portion 90A of the first fixing groove 90.
Next, the operating rod 12 is moved toward the tip tool 14, and the first fixing protrusion (pin) 60 is inserted up to the second groove portion 90B of the first fixing groove 90. When it reaches the groove wall on the tip tool 14 side of the second groove portion 90B, the operating rod 12 is rotated circumferentially, and the first fixing protrusion (pin) 60 is advanced along the groove of the second groove portion 90B toward the third groove portion 90C.
When the connecting structure 10 reaches the mouth of the third groove portion 90C, i.e., when it reaches the dead end of the second groove portion 90B, the operating rod 12 is pulled back from the tip tool 14 side toward the handle, and the first fixing protrusion (pin) 60 is inserted into the third groove portion 90C.

When fixing the first connecting member 50 to the second connecting portion 42, as shown in Figure 32 (B), the first connecting member 50 is moved in the longitudinal direction of the operating rod 12 by the action of the second fixing protrusion (plunger) 62 of the first connecting member 50 and the second fixing groove 92 of the core member 44, and the first connecting member 50 is moved to a position where it presses the second connecting member 80, connecting the first connecting member 50 and the second connecting portion 42, and firmly connecting the connecting portion 24 (on the operating rod side) of the operating rod 12 and the connecting portion 32 (on the tip tool side) of the tip tool 14.
In this embodiment, the axis of the core member 44 is aligned with the axis of the second connecting portion 42 , and the second fixing protrusion (plunger) 62 is aligned with the first groove portion 92 A of the second fixing groove 92 .
Next, the first connecting member 50 is moved toward the tool tip 14, and the second fixing protrusion (plunger) 62 is inserted up to the second groove portion 92B of the second fixing groove 92. Once it reaches the groove wall on the tool tip 14 side of the second fixing groove 92, the first connecting member 50 is rotated circumferentially, and the second fixing protrusion (plunger) 62 is advanced along the groove of the second groove portion 92B toward the third groove portion 92C.
When the second fixing protrusion (plunger) 62 reaches the groove mouth of the third groove portion 92C, i.e., when it reaches the dead end of the second groove portion 92B, the second fixing protrusion (plunger) 62 is fitted into the third groove portion 92C.
In this way, by rotating the first connecting member 50, the action of the second fixing protrusion (plunger) 62 of the first connecting member 50 and the second fixing groove 92 of the second connecting portion 42 moves the first connecting member 50 to a position where it presses the second connecting member 80, thereby connecting the first connecting member 50 to the second connecting portion 42 of the core member 44.

In the connecting structure 10, the unlocking of the connecting portion 24 (on the operating rod side) of the operating rod main body 20 and the connecting portion 32 (on the tip tool side) of the tool portion (tip tool portion) is described primarily with reference to Figure 33. The first connecting member 50 is rotated and moved to the position of the second groove portion 92B to temporarily secure it. Then, by moving the connecting portion 24 (on the operating rod side) of the operating rod body 20 toward the tip, and as the first connecting member 50 moves, pushing the second connecting member 80 toward the handle, the first fixing convex portion (pin) 60 constituting the fixing means 16 is removed from the third groove 90C. The operating rod 12 is then turned to move the first fixing convex portion (pin) 60 along the second groove 90B. When it is positioned in the first fixing groove 90, the operating rod 12 is moved toward the handle to remove the first fixing convex portion (pin) 60 from the first fixing groove 90, thereby separating the connecting portion 24 (on the operating rod side) of the operating rod 12 and the connecting portion 32 (on the handle side) of the tip tool 14.

(Modifications of the first to third embodiments)
Modifications of the first to third embodiments will be described below with reference to FIGS.
In this modification, the connecting structure 10 is formed not in a position close to the tool tip 14 having the connected portion, but in a position close to the handle side of the rod body.

The modified connecting structure 10 connects the rod body at the proximal end and the rod body at the distal end of the two divided rod bodies, and is formed to connect the first operating rod body 12A to which the tip tool 14 constituting the operating rod 12 is connected, and the second operating rod body 12B constituting the operating rod 12 at the proximal end.
The first operating rod body 12A constitutes a connecting portion, and a connected portion is formed at its tip end, and the second operating rod body 12B constitutes a rod body, and a connecting portion is formed at its rear end.

In a modified example of the first embodiment, the operating rod 12 comprises a long, cylindrical operating rod main body 20 constituting the first operating rod body 12A, and a gripping portion 22 constituting the second operating rod body 12B, which is attached to the rear end, i.e., the front side, of the operating rod main body 20.
The operating rod body 20 has the tip tool 14 attached to its tip side, and is provided with a connecting portion 24 (on the operating rod side) that constitutes the connected portion in the area on the rear end side.

As described above, the embodiment of the present invention has been disclosed in the above description, but the present invention is not limited thereto.
In other words, various modifications can be made to the above-described embodiments in terms of mechanism, shape, material, quantity, position, arrangement, etc. without departing from the scope of the technical idea and purpose of the present invention, and these modifications are included in the present invention.
In the above embodiment, the connecting portion 24 on the side of the operating rod 12, which is a rod body, and the connecting portion 32 on the side of the connected portion are formed so that they can be combined in parallel with each other, with the center line extending in the axial direction of the rod body being concentric, and a convex portion is formed on one connecting portion 24, and a concave portion is formed on the other connecting portion 32, but it is also possible to form a concave portion, for example, a rod body side connecting portion mounting hole 94, on the connecting portion 24 (on the operating rod side), and a convex portion, for example, a core member 44, on the connecting portion 32 (on the tip tool side).

The connecting structure of the present invention can be widely used as a connecting structure for rod-shaped objects.

10 Connection structure 12 Operating rod 12A First operating rod body 12B Second operating rod body 14 Tip tool 16 Fixing means 18 Deterring means 20 Operating rod body 20a Recessed portion 22 Grip portion 24 (Operating rod side) Connection portion 26 (First) Operating rod mounting member 26a Fixing pin 26b Fixing pin 26c Connection screw 26d Mounting hole 28 (Second) Operating rod mounting member 28a Anti-slip screw 30 Tool portion (tip tool portion)
32 (on the tool bit side) connecting portion 32a Recessed portion 40 First connecting portion 42 Second connecting portion 42a Recessed portion 44 Core member 46 Hollow portion 46a First hollow portion 46b Second hollow portion 46c Third hollow portion 48 Male thread portion

50 First connecting member 50a Hole 50E Tip surface 52 Third connecting member 58 Female thread portion

60 First fixing protrusion (pin)
62 Second fixing protrusion (plunger)
62a Cylindrical main body 62b Pressurizing body 62c Convex portion 64 Fixing device

70 Resilient member 72 Resilient member mounting portion 74 Resilient member mounting portion 76 Second resilient member

80 Second connecting member 80E Rear end surface 82 First connecting portion 84 Second connecting portion 88 Male thread portion

90 First fixing groove 90A First groove portion 90B Second groove portion 90C Third groove portion 92 Second fixing groove 92a Recessed portion 92b Moving path 92A First groove portion 92B Second groove portion 92C Third groove portion 94 Rod body side connecting portion mounting hole 96 Columnar core member mounting portion 98 Third resilient member

Claims (3)

A connecting structure that can connect a rod body and a connected part connected to the rod body to a locked state,
a core member configured to connect a connecting portion on the rod body side to a connecting portion on the connected portion side;
a first connecting member disposed on the rod body side in the rod body side region so as to be movable in the axial direction of the rod body;
a second connecting member disposed in a region on the connected portion side;
a third connecting member that is inserted into the core member and the first connecting member;
The first connecting member is annular and fitted around the core member,
The second connecting member has a connecting portion mounting hole into which a core member is inserted,
the third connecting member is configured to be interposed between the first connecting member and the second connecting member, with a tip side thereof in contact with a proximal end edge of the second connecting member and in contact with a proximal end edge of the inner circumferential surface of the first connecting member on the hollow portion side,
A core member is combined with the connecting portion mounting hole so that the connecting portion on the rod body side and the connecting portion on the connected portion side are connected to each other,
the core member has a shape that is inserted into a connecting portion mounting hole formed in a hollow portion provided in the second connecting portion of the second connecting member,
a columnar core member mounting portion is provided in the connecting portion mounting hole,
The core member has a hollow annular portion drilled in the longitudinal direction,
The hollow portion has a first hollow portion formed at the center, which is elongated and narrowed, and a second hollow portion formed on the tip side of the first hollow portion,
The first connecting member can be moved by rotating it and stopped at a position suitable for pressing the second connecting member by the third connecting member,
The rod body is provided with a fixing means constituting a separation prevention means in an area on the side of the connected part connected to the rod body, which prevents separation of the connected parts by the connecting structure,
The second connecting member has a fixing means formed in a rod -side region for fixing the fixing means on the rod-side,
A rod body connection structure characterized in that, when the connected part is connected to the rod body, the third connecting member is fixed to the first connecting member side region of the second connecting member by a fixing means constituting the separation prevention means , thereby controlling the movement of the second connecting member and preventing the fixing means on the rod body side from coming off the fixing means formed on the second connecting member. A connecting structure that can connect a rod body and a connected part connected to the rod body to a locked state,
a core member configured to connect a connecting portion on the rod body side to a connecting portion on the connected portion side;
a first connecting member disposed on the rod body side in the rod body side region so as to be movable in the axial direction of the rod body;
a second connecting member disposed in a region on the connected portion side;
a third connecting member that is inserted into the core member and the first connecting member;
The first connecting member is annular and fitted around the core member,
The second connecting member has a connecting portion mounting hole into which a core member is inserted,
the third connecting member is configured to be interposed between the first connecting member and the second connecting member, with a tip side thereof in contact with a proximal end edge of the second connecting member and in contact with a proximal end edge of an inner circumferential surface of the first connecting member on the hollow portion side,
A core member is combined with the connecting portion mounting hole so that the connecting portion on the rod body side and the connecting portion on the connected portion side are connected to each other,
the core member has a shape that is inserted into a connection mounting hole formed in a hollow portion provided in the second connection portion of the second connection member,
a columnar core member mounting portion is provided in the connecting portion mounting hole,
The core member has a hollow annular portion drilled in the longitudinal direction,
The hollow portion has a first hollow portion formed at the center, which is elongated and narrowed, and a second hollow portion formed on the tip side of the first hollow portion,
The first connecting member can be moved by rotating it and stopped at a position suitable for pressing the second connecting member by the third connecting member,
The connecting portion on the rod body side and the connecting portion on the connected portion side have a convex portion formed on one side and a concave portion formed on the other side, and are configured to be connected by combining the convex portion and the concave portion,
the first connecting member and the second connecting member are configured to be separated by the first connecting member and the second connecting member being connected to each other moving in opposite directions,
The rod body is provided with a restraining means that constitutes a separation prevention means that prevents separation of the rod body and the rod connected by the connecting structure,
A rod body connecting structure, characterized in that the restraining means is configured to press the third connecting member toward the second connecting member so that the interlocked convex and concave portions do not separate when connected. a second resilient member is disposed in a second hollow portion that exists between a proximal end of the columnar core member attachment portion and a boundary wall portion of the first hollow portion of the hollow portion;
3. The rod body connection structure according to claim 1 or 2, wherein the second resilient member is configured to contract and push the columnar core member attachment portion and the second connecting portion toward the tip when locked, and is configured to be in a slightly contracted state in the locked state, and to be further contracted when the second connecting member is pulled toward the front during the release operation.