JPH0330277B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a wiring duct plug used in a wiring duct in which a plug is connected at an arbitrary length position.

[Background technology]

Conventionally, 12th to 14th plugs were used as wiring duct plugs.
There is one shown in the figure. This is the plug body 101
By rotating the handle 102, the camshaft 103 interlocked with the handle 101 rotates,
A cam 104 causes a plug-blade-shaped contact 105 and a fixing piece 106 to protrude from the plug body 101.

Due to this protrusion, the fixing piece 106 engages with the lip part 108 of the wiring duct 107 and the plug body 1
01 is fixed to the wiring duct 107, and the contactor 105 contacts the conductor 109 of the wiring duct 107 to establish an electrical connection. To remove the plug body 101, rotate the handle 102 in the opposite direction,
The contact 105 and the fixing piece 106 are attached to the plug body 10.
Immerse yourself in 1.

However, in this conventional configuration, the contactor 105 bends to face the conductor 109 and comes into contact with the conductor 109, resulting in poor contact reliability. In other words, conductor 1 does not have a cleaning function by wiping.
If there is an oxide film on the 09, or if insulating foreign matter is caught, these cannot be removed, resulting in poor contact.

In addition, a contact 105 made of a leaf spring is used,
Since contact pressure is obtained by bending the contactor 105 facing the conductor 109, it is not suitable for branching large currents. In order to flow a large current, it is necessary to increase the cross-sectional area of the contactor 105, but if the cross-sectional area is increased, the spring properties of a leaf spring cannot be obtained. In addition, copper-based materials with high conductivity are generally used, but copper-based materials have poor spring properties. Materials with high springiness generally have poor electrical conductivity.

Furthermore, since the contact 105 is operated in opposition to the conductor 109, if a large current flows and the contact 105 is welded to the conductor 109 due to a short circuit accident, the plug body 10 will not move even if the handle 102 is turned.
There is a problem that 1 cannot be removed.

15 to 18 show other conventional examples. In this example, when attaching the plug body 111 to the wiring duct 112, the head portion 113 of the plug body 111 is inserted into the opening 118 of the wiring duct 112, and the
As shown in the figure, the plug body 111 has a structure in which the entire body is rotated. Plug body 111 due to rotation
The fixing piece 114 is attached to the lip part 1 of the wiring duct 112.
15 , and the contact 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 duct opening size becomes large.

[Purpose of the invention]

An object of the present invention is to provide a wiring duct plug that is easy to attach and detach, provides reliable contact with contacts, and is easy to obtain with a large current capacity.

[Disclosure of the invention]

The wiring duct plug of the present invention includes a plug body that is partially inserted into an opening extending in the longitudinal direction of the wiring duct. A fixing rotary piece for fixing the plug body to the wiring duct and a contact for flowing a current in contact with the conductor of the wiring duct are each rotatably provided on the plug body. The rotation axes of these fixing rotation pieces and contacts are in the direction along the insertion direction of the plug body. A lever is provided to rotate the fixing rotary piece and the contact in conjunction with each other.

According to this configuration, since the fixing rotary piece and the contactor are rotated in conjunction with each other by the lever, attachment to the wiring duct only requires the operation of the lever, and the operation is easy. Since the part of the plug body that is inserted into the wiring duct is not rotated, the insertion part can be freely enlarged in the longitudinal direction of the wiring duct. Since the contacts are structured so that they contact the conductors of the wiring duct while rotating, a cleaning function by wiping can be obtained. Further, since the contact rotates and comes into contact with the conductor, there is no need to select a material with good spring properties for the contact, and a material with high conductivity can be selected.

Embodiment An embodiment of the present invention will be described based on FIGS. 1 to 11. As shown in FIG. 6, this wiring duct plug includes a plug body 1 that is partially inserted into an opening 3 along the longitudinal direction of the wiring duct 2, and a pair of levers for attaching and detaching the plug body 1. 4. The wiring duct 2 is approximately groove-shaped with a lip part 2a, and there are 3 parts inside.
A book conductor 5 is provided exposed from the coating.

The plug main body 1 has a body 6, a cover 7 covering the lower surface of the body 6, and a head cover 8 provided above.

As shown in FIG. 6C, contact blades 9a and 9a' protrude from both sides and the top surface of the head cover 8.
These plug blades 9a, 9a' are connected to each conductor 5 of the wiring duct 2.
come into contact with. A metal frame 1 is mounted on the top surface of the body 6.
0 (see FIG. 7), and rotating pieces 11 for fixing to the metal frame 10 are provided at both ends of the body 6.
is attached with a fixed shaft 12. As shown in FIG. 6C, 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 rotating fixing piece 11 and the metal frame 10.

FIG. 7 is an analytical perspective view of this wiring duct plug. The fixing rotary piece 11 is fixed by caulking or the like with the fixing shaft 12 via the metal frame 10, and the lever 4
Insert the gear portion 4a provided in the square shaft portion of the fixed shaft 12. Therefore, the lever 4 and the fixing rotating piece 11
and rotate together via a fixed shaft 12. The contacts 9, 9' provided with the plug blades 9a, 9a' are pipe-shaped, into which a lead wire 23 is inserted and crimped. These contacts 9, 9' are provided with pressure springs 13, 9', respectively.
13' as well as holes 15, 1 in the insulating frame 14.
Insert into 5'. The lower part of the insulating frame 14 fits into the elongated hole of the metal frame 10, and the insulating frame 14
A gear 16 is fitted into the lower ends of the two contactors 9 which protrude downward. The relationship between the contactor 9 and the gear 16 will be explained later with reference to FIG. 8.

Cover the insulating frame 14 with the head cover 8,
These are fixed to the metal frame 10 with fixing screws 19. The plug blade 9a of the contactor 9 is inserted into the slit 20 formed between the head cover 8 and the insulating frame 14.
It is made to protrude so that it can be freely protruded and retracted by rotation.
The plug blade 9a' of the center contactor 9' is attached to the head cover 8.
protrude from the hole on the top surface of the

In the metal frame 10, the body 6 is fixed in a hugging state by the mounting piece portion 10a. The body 6 is open at the top and bottom, and has the gear 1 inside.
6, the gear portion 4a of the lever 4, and the terminal block 21 are housed. Three terminal boards 22 are arranged in each partition chamber in the terminal block 21, and lead wires 23 of the contacts 9, 9' are connected to the upper ends of these terminal boards 22 with terminal screws 24. The lead wire 23 is made of a flexible stranded copper wire, and an electric wire for taking out current is connected to the lower end of the terminal plate 22 that absorbs the rotation of the contact 9 by a terminal screw 25.

FIG. 8 is an enlarged 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 concave part on the top surface connected to the insulating frame 1.
It is loosely fitted into the boss 27 of No. 4 so as to be rotatable. contact 9
has protrusions 28 on both sides of the lower end, and these protrusions 28 align with the cross-cut key groove 16a of the gear 16.
(See Figure 7). Therefore, gear 16
When the contactor 9 is rotated, the contactor 9 also rotates.

As shown in FIG. 1B, the gear 16 is engaged with the gear portion 4a of the lever 4, and by rotating the lever 4, the contact 9 is also rotated in conjunction. An interlocking mechanism 30 is formed by the gear portion 4a of the lever 4 and the gear 16.
is configured.

The pair of levers 4 are arranged at an angle (first
(solid line in the figure) and an angle at which they project toward the same side of the plug body 1 (dotted line in Figure 1)
It is possible to rotate within a range between . The rotation range is restricted by a lever protrusion notch 3 formed in the body 6.
1 (see Figure 7). Fixing rotating piece 11
Interference with the insulating cover 14 is avoided by providing the notch 11a.

The attachment and detachment of this wiring duct plug will be explained. When installing, as shown in Figure 6A, with both levers 4 protruding from the same side, insert the head cover 8 of the plug body 1 into the wiring duct 2.
Insert into. In this state, rotate both levers 4 approximately 90 degrees.
By rotating it outward, the fixing rotating piece 11 directly connected to the lever 4 becomes horizontal as shown in FIG.
(Fig. 6C). Therefore, the plug body 1 is fixed to the wiring duct 2. Also, lever 4
Since the contactor 9 is engaged with the contactor 9 via the gear 16, the contactor 9 also rotates, and its plug blade 9a protrudes from the plug body 1 and comes into contact with the conductor 5 of the wiring duct 2.

To remove it, rotate the lever 4 toward the side of the plug body 1 in the opposite direction to the above. As a result, the fixing rotary piece 11 is oriented vertically as shown by the solid line in FIG. 5, and the plug blade 9a is retracted, allowing the plug body 1 to be pulled out.

Attachment and detachment are performed in this manner, and since it is only necessary to rotate the lever 4, the attachment and detachment operation is easy. Moreover, since the pair of levers 4 are configured to perform the mounting operation by rotating outward symmetrically, the plug body 1 can be held with both hands, the thumbs of both hands should be placed 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 part of the plug body 1 inserted into the wiring duct 2 is not rotated, the insertion part can be freely enlarged in the longitudinal direction of the wiring duct 2, and a large current capacity can be designed. Plug blade 9 of contactor 9
Since a 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 insulating foreign matter is caught, these can be removed and reliable contact can be achieved. In addition, since the contact 9 rotates and comes into contact with the conductor 5, there is no need to select a material with good spring properties for the contact 9, unlike the conventional leaf spring-shaped contact that moves forward and backward while facing each other. Materials with high conductivity can be selected. Therefore, from this reason as well, a device with a large current capacity can be manufactured.

A pair of fixing rotating pieces 11 are located at both ends of the plug body 1, and the distance between them is large, so the installation is stable without rattling, can be fixed reliably, and has strong installation strength. .

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

In the above embodiment, two fixing rotary pieces 11 are provided, but only one fixing rotary piece 11 may be provided. Also, lever 4
The fixing rotating piece 11 may be rotated via a gear or the like instead of being directly connected to the fixing rotating piece 11. Furthermore, the two fixing rotary pieces 11 may be rotated by one lever.

〔Effect of the invention〕

In the wiring duct plug of the present invention, since the fixing rotating piece and the contact are rotated in conjunction with each other by a lever, installation into the wiring duct can be done by simply operating the lever, making it easy to operate. . Since the part of the plug body that is inserted into the wiring duct is not rotated, the insertion part can be freely enlarged in the longitudinal direction of the wiring duct, and a large current capacity can be designed.

Since the contacts are structured so that they contact the conductors of the wiring duct while rotating, a cleaning function by wiping can be obtained. Therefore, even if an oxide film is formed on the conductor or insulating foreign matter is caught, these can be removed and reliable contact can be achieved.
In addition, since the contact rotates and comes into contact with the conductor, unlike conventional contactors that move forward and backward while facing each other, there is no need to select a material with good spring properties for the contact, making it possible to select a material with high conductivity. be able to. Therefore, this also has the effect that a device with a large current capacity can be manufactured.

[Brief explanation of drawings]

1A and 1B are respectively a plan view of an embodiment of the present invention and a plan view of its gear arrangement, FIG. 2 is a side view thereof, FIG. 3 is a cutaway front view thereof, and FIG. 5 is a broken plan view of the cover removed, FIG. 6 is an explanatory view of the installation process, FIG. 7 is an exploded perspective view of the same, and FIG. 8 is an enlarged cross-sectional view of the same. Figure 9 is a partially enlarged plan view, Figure 10 and Figure 1.
1 is a cross-sectional view and a vertical sectional view of the insulating cover, respectively, FIG. 12 is a front view of the conventional example, FIG. 13 is a sectional view thereof, FIG. 14 is an exploded perspective view thereof, and FIG. 15 is another one. Perspective view of the conventional example, No. 16
The figure is a front view showing the relationship with the wiring duct.
FIG. 7 is a sectional view of the wiring duct, and FIG. 18 is an explanatory diagram of the installation operation. 1...Plug body, 2...Wiring duct, 3...
Opening, 4... Lever, 4a... Gear portion, 5... Conductor, 9... Contact, 9a... Bung blade, 10... Metal frame, 11... Rotating piece for fixing, 16... Gear, 30...Interlocking mechanism.

Claims (1)

[Claims] 1. A plug body is provided, a part of which is inserted into an opening along the longitudinal direction of the wiring duct, and a rotating fixing piece that fixes the plug body to the wiring duct and a contact that contacts the conductor of the wiring duct to flow an electric current. are each rotatably provided on the plug body, and the rotation axes of the fixing rotary piece and the contact are set in a direction along the insertion direction of the plug body, and the fixing rotary piece and the contact are interlocked. A wiring duct plug equipped with a lever that can be rotated.