JP6604607B2 - Sockets for connectors and tools - Google Patents

Description

  The present invention relates to a connector and a tool socket.

  Fastening of fasteners such as bolts and nuts is performed by attaching a tip tool such as a hexagon socket wrench to an electric rotary tool such as a drill driver, impact driver or impact wrench. At this time, in a place where tightening is difficult such as near the wall, the rotational movement of the electric tool is transmitted to the tip tool, and so-called circumferential movement of the rotation axis of the tip tool with respect to the rotation axis of the electric rotary tool is enabled. A tip tool provided with a swing mechanism (hereinafter referred to as “fluctuating joint”) and an attachment (hereinafter referred to as “connector”) to which such a tip tool is attached are used.

  The tip tool having a swing joint includes, for example, a universal joint type as described in Patent Document 1, and a swing shaft portion and a swing bearing portion as described in Patent Documents 2 and 3. In addition, it is known that the swinging shaft portion is prevented from coming off by the C ring.

JP-A-6-5830 JP 2004-202665 A JP 2009-279669 A

  Electric rotary tools such as drill drivers and impact drivers are capable of tightening with high torque as the battery capacity increases, and some have a maximum torque of 150 N · m or more, and even 200 N · m or more. . Some impact wrenches have a maximum torque of 300 N · m or more. For this reason, the load on the tip tool is also increasing, and when the tip tool described in Patent Literatures 1 to 3 is used for tightening with such a high torque, the swing joint may be damaged.

  An object of this invention is to provide the connection tool provided with the swing joint and tool socket which can be used for the clamping operation | work with the electric rotary tool of a high torque.

  The inventors of the present invention have intensively studied to solve the above problems and have completed the present invention. The gist of the present invention is the following connector and tool socket.

(1) A connection tool including a swing joint that allows a rotational motion of the rotary shaft of the tip rotary tool relative to the rotary shaft of the power rotary tool while transmitting the rotary motion of the power rotary tool to the tip tool,
An inner member having a swing shaft at one end;
An outer member provided with a swaying bearing part that accommodates the swaying shaft part at one end;
A guide projection extending outward from the circumferential surface of the swing shaft portion;
A guide hole configured to extend in the axial direction of the outer member at a position corresponding to the guide protrusion of the swing bearing portion;
And a cylindrical member covering the guide hole.

  (2) The outer surface shape of the cross-section perpendicular to the axial direction of the inner member of the swing shaft portion is a polygon similar to the inner surface shape of the cross-section perpendicular to the axial direction of the outer member of the swing bearing portion. The connecting tool according to (1), wherein the rotating motion of the tip tool can be moved circumferentially with respect to the rotating shaft of the electric rotating tool while transmitting the rotating motion of the electric rotating tool to the tip tool.

  (3) The connector according to (2), wherein the outer surface shape and the inner surface shape are hexagonal.

(4) The swing shaft portion is
A reduced diameter portion having a diameter smaller than the base portion of the inner member;
An outer surface taper portion provided between the base portion and the reduced diameter portion;
A sliding portion composed of an inner surface of the swing bearing portion and a sliding surface;
A head having a smaller diameter than the sliding portion;
A tapered sliding surface portion provided between the sliding portion and the head portion,
The connector according to (2) or (3) above.

(5) The swing bearing portion is
A bottom surface portion in contact with the head;
An inner peripheral surface portion in contact with the sliding portion and the taper sliding surface portion;
An annular edge having an inner diameter larger than the inner peripheral surface,
An inner taper surface portion provided between the inner peripheral surface portion and the annular edge portion;
The connector of (4) above.

(6)
The outer taper portion and the annular edge;
The reduced diameter portion and the inner tapered surface portion;
The tapered sliding surface portion and the inner peripheral surface portion are in contact with each other,
The connector according to (5) above.

(7) The guide protrusion is
A hole provided in the peripheral surface of the swing shaft portion;
Consists of pins inserted into the holes,
The connector according to any one of (1) to (6) above.

(8) The hole is a through hole, and the length of the pin is larger than the inner diameter of the inner peripheral surface portion and smaller than the inner diameter of the cylindrical member.
The connector according to (7) above.

(9) The other end of the inner member is provided with a first connection portion that is connected to a tip tool,
The other end of the outer member is provided with a second connection portion that is connected to the electric rotary tool.
The connector according to any one of (1) to (8) above.

(10) The connector according to any one of (1) to (9) above is provided.
Tool socket.

  According to the present invention, since a connector and a socket for a tool excellent in durability against high torque can be obtained, the maximum torque is 150 N · m or more, and further, it is used for tightening with an electric rotary tool having 200 N · m or more. Is possible.

The perspective view which shows the external appearance shape of the connection tool which concerns on this embodiment The fragmentary sectional view which shows the internal structure of the connector which concerns on this embodiment The fragmentary sectional view which shows the internal structure of the connector which concerns on this embodiment in the visual field different from FIG. The fragmentary sectional view which shows the internal structure of the connector which concerns on other embodiment

  As shown in FIGS. 2 and 3, the connector 10 according to the present embodiment includes an inner member 20 and an outer member 30. One end of the inner member 20 is provided with a swing shaft portion 21, and one end of the outer member 30 is provided with a swing bearing portion 31 that accommodates the swing shaft portion 21. An outwardly extending guide protrusion 22 is provided on the peripheral surface of the swing shaft portion 21, and is provided to extend in the axial direction of the outer member 30 at a position corresponding to the guide protrusion 22 of the swing bearing portion 31. A guide hole 32 is provided. The guide hole 32 is covered with a cylindrical member 33. Since it has such a structure, the movement of the guide protrusion 22 is settled in the guide hole 32, and the omission can be controlled.

  Since the connector 10 according to the present embodiment has such a configuration, a torque higher than that of a conventional swaying joint that suppresses the swaying of the swaying shaft portion by the C ring, that is, a maximum torque of 150 N · Even when a torque of m or more, or even 200 N · m or more, is applied, breakage of the swing joint can be suppressed.

  The outer surface shape of the cross section perpendicular to the axial direction of the inner member 20 of the oscillating shaft portion 21 is a polygon similar to the inner surface shape of the cross section perpendicular to the axial direction of the outer member 30 of the oscillating bearing portion 31. While transmitting the rotational motion by the tool (not shown) to the tip tool (not shown), the rotation axis of the electric rotary tool (not shown) (in the example shown in FIGS. 2 and 3, the axis in the same direction as the axial direction of the outer member 30) ) Of the tip tool (not shown) with respect to the rotation axis (in the example shown in FIGS. 2 and 3, the axis in the same direction as the axial direction of the inner member 20) (movement of the inner member 20a indicated by the broken line in FIG. 2). Make it possible.

  The outer surface shape of the swing shaft portion 21 and the inner surface shape of the swing bearing portion 31 are preferably hexagonal. If the polygon is less than a pentagon, smooth circumferential movement may be difficult, and if the polygon is more than a heptagon, a high torque is applied between the swing shaft portion 21 and the swing bearing portion 31. There is a risk of slipping between them. The polygon is a regular polygon.

  The swing shaft portion 21 includes a reduced diameter portion 24 having a diameter smaller than that of the base portion 23 of the inner member 20, an outer surface tapered portion 25 provided between the base portion 23 and the reduced diameter portion 24, and a swing bearing portion 31. A sliding portion 26 composed of a sliding surface and a sliding surface 26, a head portion 27 having a smaller diameter than the sliding portion 26, and a tapered sliding surface portion provided between the sliding portion 26 and the head portion 27. 28. Here, each surface of the sliding portion 26 is formed of a curved surface, and facilitates sliding with the inner surface of the swinging bearing portion 31 around the swinging shaft center.

  The swing bearing portion 31 includes a bottom surface portion 34 that contacts the head portion 27, an inner peripheral surface portion 37 that contacts the sliding portion 26 and the tapered sliding surface portion 28, and an annular edge portion 35 having an inner diameter larger than that of the inner peripheral surface portion 37. And an inner tapered surface portion 36 provided between the inner peripheral surface portion 37 and the annular edge portion 35. In such a configuration, the outer surface taper portion 25 and the annular edge portion 35 are in contact with each other, and the reduced diameter portion 24 and the inner surface taper surface portion 36 are in contact with each other. Further, the taper sliding surface portion 28 and the inner peripheral surface portion 37 are in contact with each other. Abut. For this reason, even when a high torque, that is, a maximum torque of 150 N · m or more, or even a torque of 200 N · m or more is received, breakage of the swing joint 40 can be suppressed.

  For example, as shown in FIGS. 2 and 3, the guide protrusion 22 is configured by a pin inserted in a hole (not shown) provided on the peripheral surface of the swing shaft portion 21. Although one guide protrusion 22 may be provided, the provision of a plurality of guide protrusions 22 has an advantage that the guide protrusions 22 can be more reliably regulated from being removed from the guide holes 32. The hole for inserting the pin 22 is a through hole, and the length of the pin as the guide protrusion 22 is preferably larger than the inner diameter of the inner peripheral surface portion 37 and smaller than the inner diameter of the cylindrical member 33. As described above, the length of the through hole provided in the peripheral surface of the swing shaft portion 21 (specifically, the sliding portion 26) is larger than the inner diameter of the inner peripheral surface portion 37 and smaller than the inner diameter of the cylindrical member 33. If it is the structure which uses a pin as the guide protrusion 22, the some guide protrusion 22 can be easily provided in the outer surface of the swinging shaft part 21, and the removal | exclusion from the guide hole 32 of the guide protrusion 22 can be controlled more reliably.

  In the example shown in FIGS. 2 and 3, the other end of the inner member 20 is provided with a first connection portion 50 connected to a tip tool (not shown), and the other end of the outer member 30 is provided with an electric rotary tool (not shown). Although the connection tool 10 of the structure provided with the 2nd connection part 60 connected to (omitted) is shown, it is not restricted to such a structure. That is, it is preferable. The other end of the inner member 20 is provided with a second connection portion 60 connected to an electric rotary tool (not shown), and the other end of the outer member 30 is connected to a first tool 50 (not shown). May be provided.

  In the example shown in FIG. 2 and FIG. 3 as the first connection portion 50, the one having the same insertion angle shape as the attachment portion such as an impact wrench is described. However, the present invention is not limited to such a configuration. In other words, as the first connection part 50, if an insertion hole similar to the attachment part such as an impact driver or a drill driver is used and a shaft bar such as a hexagonal shaft or a round bar shaft can be fixed, A configuration in which the tip tool is attached. The hexagonal shaft bit can be attached and detached, and a tip tool for an electric rotary tool such as an impact driver or a drill driver can be attached.

  2 and 3, in the example shown in FIGS. 2 and 3, the mounting portion is an insertion hole, such as a drill driver or impact driver, and the tip tool is inserted through a shaft bar such as a hexagonal shaft or a round bar shaft. Although it is the connection tool 10 which can be used for the electric rotary tool of the structure to attach and the 2nd connection part 60 becomes a bit shape, it is not restricted to such a structure. When an attachment part of the tip tool has an insertion angle, such as an impact wrench, and this insertion angle is inserted into an insertion hole of the tip tool and attached to an electric rotary tool, for example, FIG. As shown, the second connector 60a may use a connector 10a configured with an insertion hole having a shape corresponding to an insertion angle (not shown).

  In the above, the connection tool for connecting the electric rotary tool and the tip tool has been mainly described. However, by forming the first connection portion 50 integrally with the tip tool, a tool socket having a swing joint is obtained. be able to.

  According to the present invention, since a connector and a socket for a tool excellent in durability against high torque can be obtained, the maximum torque is 150 N · m or more, and further, it is used for tightening with an electric rotary tool having 200 N · m or more. Is possible.

DESCRIPTION OF SYMBOLS 10 Connection tool 10a which concerns on this embodiment Connection tool 20 which concerns on other embodiment Inner member 21 Swing shaft part 22 Guide protrusion 23 Base | substrate part 24 Reduced diameter part 25 Outer surface taper part 26 Sliding part 27 Head 28 Taper sliding Surface portion 30 Outer member 31 Swing bearing portion 32 Guide hole 33 Cylindrical member 34 Bottom surface portion 37 Inner circumferential surface portion 35 Ring edge portion 36 Inner surface tapered surface portion 40 Swing joint 50 First connection portion 60 Second connection portion 60a Second connection portion

Claims (9)

A connection tool including a swing joint that allows a rotational motion of the rotating shaft of the power tool relative to a rotating shaft of the power tool while allowing the rotational motion of the power tool to be rotated while transmitting the rotational motion of the power tool to the tool.
An inner member having a swing shaft at one end;
An outer member provided with a swaying bearing part that accommodates the swaying shaft part at one end;
A guide projection extending outward from the circumferential surface of the swing shaft portion;
And the guide hole for regulating the provided so as to extend in the axial direction of the outer member, dropping of the guide protrusion in a position corresponding to the guide protrusion of the swinging bearing unit,
A cylindrical member covering the guide hole ,
The outer surface shape of the cross section perpendicular to the axial direction of the inner member of the swing shaft portion is a polygon similar to the inner surface shape of the cross section perpendicular to the axial direction of the outer member of the swing bearing portion. Accordingly, the swing shaft portion and the swing bearing portion are engaged with each other so as to transmit the rotary motion by the electric rotary tool to the tip tool, and the rotation axis of the tip tool with respect to the rotation shaft of the electric rotary tool is Allows circumferential movement,
The guide hole is set such that a width in the circumferential direction of the rocking bearing portion is larger than a width of the guide protrusion in the circumferential direction of the rocking shaft portion so that torque is not transmitted between the guide hole and the guide protrusion. It is, the connection tool. The outer surface shape and the inner surface shape are hexagonal,
The connection tool according to claim 1 . The swing shaft portion is
A reduced diameter portion having a diameter smaller than the base portion of the inner member;
An outer surface taper portion provided between the base portion and the reduced diameter portion;
A sliding portion composed of an inner surface of the swing bearing portion and a sliding surface;
A head having a smaller diameter than the sliding portion;
A tapered sliding surface portion provided between the sliding portion and the head portion,
The connector according to claim 1 or 2 . The swing bearing portion is
A bottom surface portion in contact with the head;
An inner peripheral surface portion in contact with the sliding portion and the taper sliding surface portion;
An annular edge having an inner diameter larger than the inner peripheral surface,
An inner taper surface portion provided between the inner peripheral surface portion and the annular edge portion;
The connection tool according to claim 3 . At the time of swaying,
The outer taper portion and the annular edge;
The reduced diameter portion and the inner tapered surface portion;
The tapered sliding surface portion and the inner peripheral surface portion are in contact with each other,
The connector according to claim 4 . The guide protrusion is
A hole provided in the peripheral surface of the swing shaft portion;
Consists of pins inserted into the holes,
The connection tool according to claim 4 or 5 . The hole is a through hole, and the length of the pin is larger than the inner diameter of the inner peripheral surface portion and smaller than the inner diameter of the cylindrical member;
The connection tool according to claim 6 . A first connecting portion connected to the tip tool at the other end of the inner member;
The other end of the outer member is provided with a second connection portion that is connected to the electric rotary tool.
The connector according to any one of claims 1 to 7 . The connector according to any one of claims 1 to 8 , comprising:
Tool socket.

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