JP2542018B2 - Wiring duct plug - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a wiring duct plug used in a wiring duct in which plugs are connected at arbitrary length positions.

[Background technology]

Conventionally, there are plugs for wiring ducts shown in Figs. This is because the cam shaft 103 that is interlocked with the handle 101 by rotating the handle 102 of the plug body 101.
Is rotated, and the cam 104 causes the contact blade-shaped contact 105 and the fixing piece 106 to project from the plug body 101.

Due to this protrusion, the fixing piece 106 engages with the lip portion 108 of the wiring duct 107 to fix the plug body 101 to the wiring duct 107, and the contact 105 contacts the conductor 109 of the wiring duct 107 for electrical connection. Is done. When removing the plug body 101, the handle 102 is rotated in the opposite direction so that the contact 105 and the fixing piece 106 are immersed in the plug body 101.

However, in this conventional configuration, while holding the plug body 101 with one hand, the handle 102 must be twisted with the other hand, which makes it difficult to operate. In particular, with a large current capacity, the plug body 101 is heavy and the resistance to rotate the handle 102 is also large, so it is very difficult to operate. Since the plug attachment / detachment operation is generally performed at a high place such as the ceiling of a factory or a building, it is desirable that the operation can be performed by a simple operation in terms of safety.

15 to 18 show another conventional example. In this example, when installing the plug body 111 in the wiring duct 112,
Insert the head part 113 of the into the opening 118 of the wiring duct 112, and
As shown in FIG. 8, the structure is such that the entire plug body 111 is rotated. By the rotation, the fixed piece 114 of the plug body 111 engages with the lip portion 115 of the wiring duct 112, and the contactor 116 contacts the conductor 117.

However, since the head portion 113 is inserted into the opening 118 of the wiring duct 112 and rotated, the size of the neck portion of the head portion 113 is limited by the width dimension of the opening 118 of the wiring duct 112. Therefore, when designing a plug with a large current capacity, the size of the duct opening becomes large.

[Object of the Invention]

An object of the present invention is to provide a plug for a wiring duct which can be easily attached and detached, can be surely contacted by a contactor, and can easily have a large current capacity.

[Disclosure of Invention]

The plug for a wiring duct according to the present invention is provided with a plug body, a part of which is inserted into an opening along the longitudinal direction of the wiring duct. Contactors contacting the conductors of the wiring duct are provided on both side surfaces of the plug body so as to project and retract, and both ends of the plug body in the longitudinal direction of the wiring duct are pivoted so that both ends engage and disengage from the wiring duct. A pair of fixing rotating pieces for fixing the plug body to the wiring duct is provided. The rotation axis of these fixing rotation pieces is along the plug body insertion direction. At both ends of the plug body, a pair of levers is provided that are rotatable between an angle toward the outside and an angle at which the plug body projects to the same side surface side. An interlocking mechanism is provided for rotating the fixing rotating piece located at the same end as these levers to the engaging angle by rotating the levers to the outside and projecting any one of the contacts.

According to this structure, the fixing rotating piece and the contact are rotated by interlocking with the lever, so that the wiring duct can be mounted only by operating the lever, and the operation is easy. Since the levers at both ends are configured to be attached to each other by being pivoted outwardly, the plug body can be received by both hands, the thumbs of both hands can be hooked on the levers, and the levers can be turned. Since the portion of the plug body that is inserted into the wiring duct is not rotated, the insertion portion can be made larger in the longitudinal direction of the wiring duct. Since there are a pair of fixing rotating pieces at both ends of the plug body and the distance between them is large, rattling does not occur and the mounting is stable.

Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 to 11. As shown in FIG. 6, this wiring duct plug is provided with a plug body 1 part of which is inserted into an opening 3 along the longitudinal direction of the wiring duct 2, and a pair of levers for attachment / detachment operation are attached to the plug body 1. 4 is provided. The wiring duct 2 has a substantially groove shape having a lip portion 2a, and is provided with three conductors 5 exposed inside from the coating.

The plug body 1 includes a body 6 and a cover 7 that covers the lower surface of the body 6.
And a head cover 8 provided above. As shown in FIG. 6 (C), the contact blades 9a, 9a 'of the contacts project from both side surfaces and the upper surface of the head cover 8, and these blades 9a, 9a' come into contact with each conductor 5 of the wiring duct 2. . A metal frame 10 is provided on the upper surface of the body 6 (see FIG. 7), and fixing rotating pieces 11 are attached to the metal frame 10 at both ends of the body 6 with a fixed shaft 12. As shown in FIG. 6 (C),
The plug body 1 is fixed to the wiring duct 2 by vertically sandwiching the lip portion 2a of the wiring duct 2 between the fixing rotating piece 11 and the metal frame 10.

FIG. 7 is an exploded perspective view of this wiring duct plug. The rotating shaft 11 for fixing is fixed to the fixed shaft 12 via the metal frame 10.
After fixing by caulking or the like, the gear portion 4a provided on the lever 4 is inserted into the angular shaft portion of the fixed shaft 12. Therefore, the lever 4 and the fixing rotating piece 11 rotate together via the fixed shaft 12. The contacts 9, 9'provided with the blades 9a, 9a 'are pipe-shaped, and the lead wires 23 are inserted and crimped. These contacts
Insulation frame 14 and 9,9 'together with pressure spring 13,13'
Insert into holes 15 and 15 '. The lower portion of the insulating frame 14 is fitted in the elongated hole of the metal frame 10, and the gear 16 is fitted to the lower ends of the two contactors 9 protruding below the insulating frame 10. The relationship between the contact 9 and the gear 16 will be described later with reference to FIG.

The insulating frame 14 is covered with the head cover 8, and these are fixed to the metal frame 10 with fixing screws 19. The plug blade 9a of the contactor 9 is projected from a slit 20 formed between the head cover 8 and the insulating frame 14 so that it can be projected and retracted by rotation. The blade 9a 'of the central contactor 9'is made to project from the hole on the upper surface of the head cover 8.

The metal frame 10 is fixed to the body 6 in a hugging state by the mounting piece 10a. The body 6 has upper and lower surfaces opened, and the gear 16, the gear portion 4a of the lever 4 and the terminal block 21 are housed inside. 3 in each partition room in the terminal block 21
A number of terminal plates 22 are arranged, and the lead wires 23 of the contacts 9, 9 ′ are connected to the upper ends of these terminal plates 22 by terminal screws 24. The lead wire 23 is made of a flexible copper stranded wire and absorbs the rotation of the contactor 9. An electric wire for current extraction is connected to the lower end of the terminal plate 22 by a terminal screw 25.

FIG. 8 is an enlarged cross-sectional view of the main part. The gear 16 fitted to the lower end of the contactor 9 is prevented from coming off by a retaining ring 17. The gear 16 has a recess on its upper surface rotatably fitted into the boss 27 of the insulating frame 14. The contactor 9 has protrusions 28 on both sides at the lower end, and the protrusions 28 are formed in a cross shape of the gear 16 to form a key groove 16a.
(See FIG. 7). Therefore, when the gear 16 is rotated, the contactor 9 is also rotated.

As shown in FIG. 1 (B), the gear 16 meshes with the gear portion 4a of the lever 4, and when the lever 4 is rotated, the contactor 9 is also interlocked. The gear unit 4a of the lever 4 and the gear 16 form an interlocking mechanism 30.

The pair of levers 4 rotate in a range between an angle of opening to the outside (state of solid line in FIG. 1) and an angle of protruding to the same side surface of the plug body 1 (state of chain line in FIG. 1). It is movable. The rotation range is regulated by a lever protrusion notch 31 (see FIG. 7) formed in the body 6. The fixing rotating piece 11 is provided with the notch 11a to avoid interference with the insulating cover 14.

The attachment / detachment of the plug for the wiring duct will be described. When mounting, as shown in FIG. 6 (A), the head cover 8 of the plug body 1 is inserted into the wiring duct 2 with both levers 4 projecting to the same side. In this state, by turning both levers 4 approximately 90 ° outward,
The fixing rotating piece 11 directly connected to the lever 4 is laterally oriented as shown in FIG. 1 (A), and both ends thereof engage with the lip portion 2a of the wiring duct 2 (FIG. 6 (C)). Therefore, the plug body 1 is fixed to the wiring duct 2. Further, since the lever 4 meshes with the contactor 9 via the gear 16, the contactor 9
Also rotates, and the blade 9a thereof projects from the plug body 1 and comes into contact with the conductor 5 of the wiring duct 2.

When detaching, the lever 4 is rotated to the side surface side of the plug body 1 contrary to the above. As a result, the fixing rotating piece 11 is oriented vertically as shown by the solid line in FIG. 5, the plug blade 9a is retracted, and the plug body 1 can be pulled out.

Although the attachment / detachment is performed as described above, the attachment / detachment operation is easy because it is sufficient to rotate the lever 4. Moreover, since the pair of levers 4 is configured to be mounted by rotating the levers 4 outwardly, the plug body 1 can be received by both hands, the thumbs of both hands can be hooked on the levers 4, and the levers 4 can be rotated. Therefore, from an ergonomic point of view, it is very easy to rotate the lever 4 while holding the plug body 1.

Further, since the portion of the plug body 1 to be inserted into the wiring duct 2 is not rotated, the insertion portion can be freely enlarged in the longitudinal direction of the wiring duct 2 and a large current capacity can be designed. Since the blade 9a of the contactor 9 contacts the conductor 5 of the wiring duct 2 while rotating, a cleaning function by wiping can be obtained. Therefore, even if an oxide film is formed on the conductor 5 or an insulating foreign substance is caught, these can be removed and reliable contact can be obtained. Also, the contact 9
Since it rotates and contacts the conductor 5, it is not necessary to select a material having a good spring property for the contactor 9, unlike a conventional leaf spring-like contactor that advances and retreats in a face-to-face relationship. Can be selected. Therefore, also from this, a device having a large current capacity can be manufactured.

A pair of fixing rotating pieces 11 are provided at both ends of the plug body 1 and the distance between them is large, so that there is no rattling, the mounting is stable, the fixing can be performed securely, and the mounting strength is also strong. .

As can be seen from FIG. 1, the gear portion 4a and the gear 16 of the lever 4 are partial gears in which teeth are provided only on a part of the circumference. Therefore, while arranging the four gears in a line, the arrangement length is set. Can be shortened and therefore the length of the entire plug can be shortened. Further, since the fixing rotating piece 11 is provided with the notch 11a to avoid interference with the insulating frame 14, the length of the entire plug can be shortened.

In the above embodiment, the lever 4 and the fixing turning piece 11 are directly connected, and the interlocking mechanism 30 is composed of the gear portion 4a and the gear 4 of the lever 4. The fixing rotating piece 11 may be rotated. Further, the interlocking mechanism 30 may use a cam or the like. further,
The contactor 9 does not rotate but may be formed by a leaf spring or the like so as to bend as in the conventional example.

〔The invention's effect〕

In the wiring duct plug of the present invention, the fixing rotary piece and the contact are rotated by the lever in conjunction with each other, so that the wiring duct can be mounted only by operating the lever, and the operation is easy. . In addition, since the levers at both ends are configured to perform the mounting operation by being pivoted outwardly with respect to each other, the plug body can be received by both hands, the thumbs of both hands can be hooked on the levers, and the levers can be rotated. Therefore, from an ergonomic point of view, it is very easy to rotate the lever while holding the plug body. Since the portion of the plug body to be inserted into the wiring duct is not rotated, the insertion portion can be freely enlarged in the longitudinal direction of the wiring duct, and a large current capacity can be designed. There are a pair of rotating pieces for fixing at both ends of the plug body, and the distance between them is large, so there is no rattling, the installation is stable, and it is possible to securely fix and the mounting strength is strong. is there.

[Brief description of drawings]

1A and 1B are a plan view and a plan view of a gear arrangement of an embodiment of the present invention, FIG. 2 is a side view of the same, and FIG. 3 is a cutaway front view of the same. FIG. 5 is a side view of the same with the cover removed, FIG. 5 is a cutaway plan view of the same, and FIG.
The figure is also its exploded perspective view, FIG. 8 is its enlarged sectional view, FIG. 9 is its partially enlarged plan view, and FIG. 10 and FIG. 11 are its transverse sectional view and longitudinal sectional view, respectively. , FIG. 12 is a front view of a conventional example, FIG. 13 is its sectional view, FIG. 14 is the same exploded perspective view, FIG. 15 is a perspective view of another conventional example, and FIG. 16 is its wiring duct. FIG. 17 is a front view showing the relationship, FIG. 17 is a sectional view of the wiring duct, and FIG. 18 is an explanatory view of the mounting operation thereof. 1 ... Plug body, 2 ... Wiring duct, 3 ... Opening, 4
...... Lever, 4a ...... gear part, 5 …… conductor, 9 …… contactor, 9a …… blade, 10 …… metal frame, 16 …… gear, 30
...... Interlocking mechanism

Claims (1)

(57) [Claims] 1. A plug main body, a part of which is inserted into an opening along a longitudinal direction of a wiring duct, is provided with contacts contacting conductors of the wiring duct so as to project and retract on both side surfaces of the plug main body. A pair of fixing rotating pieces is provided at both ends in the longitudinal direction of the wiring duct of the plug body to fix the plug body to the wiring duct by engaging and disengaging the plug body with the wiring duct. The rotation axis of the plug body is in a direction along the plug body insertion direction, and a pair of rotatable bodies is provided at the both ends of the plug body between an angle toward the outside and an angle at which the plug body protrudes to the same side surface side. Provided with a lever, and an interlocking mechanism for rotating any one of the contact pieces while rotating the fixing rotation piece located at the same end as these levers to the engagement angle by rotating the levers to the outside. Plug for wiring duct.