JPH01149389A - Plug for wiring duct - Google Patents

Abstract

PURPOSE:To secure the retaining of a contactor with simple construction by inserting a contactor into a cylinder and rotating the contactor along with a contactor rotating gear. CONSTITUTION:A contactor rotating gear in which a cylinder 16a is projected at the center is provided and a contactor 9 is provided inside the cylinder 16a. A plug blade 9a which projects from the cylinder 16a and contacts with the conductor 5 of a wiring duct 2 is provided in this contactor 9. And a control means which engages the contactor rotating gear 16 and rotates it is provided. Since the contactor 9 is inserted in the cylinder 16a provided in the contactor rotating gear 16 like this, the contactor 9 can be rotated along with the contactor rotating gear 16 and the construction for rotation of the contactor 9 becomes simple and since the contactor 9 is retained in the cylinder 16a the retaining becomes sure.

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 Art) Conventionally, as a plug for a wiring duct, there is a structure in which a contact is brought into contact with and separated from a conductor of a wiring duct when it is attached to or removed from a wiring duct, and the contact is made into a temporary spring and is bent by a cam or the like.

However, since the tip of the contact moves toward and away from the conductor of the wiring duct, there is a problem that the reliability of the contact is poor. That is, since it does not have a cleaning function by wiping, if there is an oxide film on the conductor or if insulating foreign matter is caught in the conductor, it cannot be removed, resulting in poor contact. In addition, since the contactor is to be bent in opposition to the conductor to obtain contact pressure, it must have excellent spring properties, but if the cross-sectional area of the contactor is increased for use with large currents, There are problems in that good spring properties cannot be obtained and it is difficult to make one for large currents.

Therefore, we considered a method that would rotate the contact and bring it into contact with the conductor of the wiring duct, but there was no one with a simple structure that would allow the contact to rotate.

[Purpose of the invention]

An object of the present invention is to provide a wiring duct plug that has a simple structure and allows reliable contact between contacts.

[Disclosure of the invention]

The plug for a wiring duct of the present invention is provided with a contact rotary gear having a cylindrical portion protruding from the center, and a contact socket is provided within the cylindrical portion. This contact is provided with a plug blade that protrudes from the cylindrical portion and contacts the conductor of the wiring duct. Further, an operating means is provided that meshes with the contactor rotation gear and rotates the contactor rotation gear.

According to this configuration, since the contact rotary gear is provided with a cylindrical portion and the contact is inserted into the cylindrical portion, the contact can be rotated together with the contact rotary gear, and the structure for rotating the contact is It's easy. Since the contact is held in the cylindrical part,
It is securely held and can stably apply strong contact pressure. Since the contact contacts the conductor of the wiring duct while rotating, a cleaning function by wiping can be obtained.

An embodiment of the present invention will be described with reference to FIGS. 1 to 8. As shown in FIG. 4, this wiring duct plug is provided with a plug body l 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 is provided. The wiring duct 2 is
It is approximately groove-shaped with a lip portion 2a, and three conductors 5 are exposed from the coating inside.

The plug 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. 4(C), the plug blade 9a of the contact and the tip 9a' of the earth pin protrude from both sides and the top surface of the head cover 8, and these plug blades 9a and the tip 9a' of the earth pin Contact with each conductor 5. A metal frame 10 is provided on the upper surface of the body 6 (see Fig. 3), and rotating pieces 11 for fixing, which also serve as earth contacts, are attached to the metal frame 10 at both ends of the body 6 with a fixed shaft 12. It is.

As shown in FIG. 4(C), the lip portion 2 of the wiring duct 2
The plug body 1 is fixed to the wiring duct 2 by vertically sandwiching the fixing rotating piece 11 and the metal frame 10.

FIG. 2 is an exploded perspective view of this wiring duct plug.

The fixing rotating piece 11 is attached to the fixing shaft 1 via the metal frame 10.
2 by caulking or the like, and insert the gear portion 4a provided on the lever 4 into the square shaft portion of the fixed shaft 12. Therefore, lever 4
and the rotating fixing piece 11 rotate together via the fixed shaft 12. The contactor 9 provided with the plug blade 9a is shaped like a leaf spring, and is mounted in the cylindrical portion 16a of the contactor rotating gear 16 inserted into the hole 15 of the insulating frame 14. Insulating frame 14
The lower part of the metal frame 10 fits into the elongated hole.

The insulating frame 14 is covered with a helad cover 8, and these are fixed to the metal frame 10 with fixing screws 19. contact 9
The plug blade 9a is made to protrude from a slit 20 formed between the head cover 8 and the insulating frame 14 so that it can be freely protruded and retracted by rotation.

The tip 9a' of the ground contact 9' is 1, and the head cover 8
protrude from the hole on the top surface of the

The metal frame 10 is fixed to the body 6 in a hugging state by the mounting piece portion 10a. The body 6 has an open top and bottom, and the contact rotary gear 16, the gear portion 4a of the lever 4, and the terminal block 21 are housed inside. Terminal block 21
Three terminal plates 22 and 22' are arranged in each partition chamber, and the lead wires 2 of the contacts 9 are connected to the upper ends of the terminal plates 22 on both sides.
No. 3 crimp terminals 23a are connected with terminal screws (not shown).

The lead wire 23 is made of a flexible steel strand and absorbs rotation of the contactor 9. The central terminal plate 22' has a leaf spring portion bent in a U-shape, and biases the ground pin 9' upward. A current extraction wire and a ground wire are connected to the lower ends of the terminal plates 22, 22' by terminal screws (not shown), respectively.

FIG. 1 is an enlarged sectional view of the main part. The contact rotary gear 16 to which the contactor 9 is mounted has a cylindrical portion 16a projecting from the center thereof, and the cylindrical portion 16a has a split cylindrical shape with split grooves formed at two locations in the circumferential direction. A rotation stop protrusion 1 is provided at the upper end of the cylindrical portion 16a.
6b is provided protrudingly. The contact rotary gear 16 has a cylindrical portion 16
a is inserted into the hole 15 of the insulating frame 14, an annular recess around the cylindrical part 16a is loosely fitted into the boss part 14a of the insulating frame 14, and a rotation preventing protrusion 15a is formed at the upper opening edge of the hole 15. It engages with the notch 15a. The contact rotary gear 16 on the right side of FIG. 1 is shown in the middle of being inserted into the hole 15. The contact rotary gear 16 is made of a resin molded product, and the rotation stop protrusion 1 is formed by bending the split cylindrical portion 16a inward.
5a can pass through the hole 15. Once it has passed through the hole 15, the cylindrical portion 16a returns due to its elasticity, and the rotation stopping protrusion 15a engages with the guide notch 15a. Guide notch 15
a is approximately 1/1 in the circumferential direction as shown in FIGS. 3 and 2.
The contact rotary gear 16 can rotate within the range until the rotation stop protrusion 16b engages with the circumferential end of the guide notch 15a.

As shown in FIG. 8, the contact rotation 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. The gear portion 4a of the lever 4 and the gear 16 constitute an interlocking mechanism 30. The pair of levers 4 are rotatable within a range between an angle in which they mutually open outward and an angle in which they mutually protrude toward the same side surface of the plug body 1. The fixing rotating piece 11 is provided with a notch 11a to avoid interference with the insulating frame 14.

The attachment and detachment of this wiring duct plug will be explained.

When installing, as shown in Fig. 4 (A) and Fig. 8 (A), with the pair of levers 4 protruding from the same side, insert the head cover 8 of the plug body 1 into the wiring duct 2. insert. In this state, both levers 4 are moved approximately 90'''
By rotating outward, the fixing rotating piece 11 directly connected to the lever 4 becomes horizontal as shown in FIG. 8(A),
Both ends thereof engage with the lip portion 2a of the wiring duct 2 (FIG. 4(C)). Therefore, the plug body 1 is connected to the wiring duct 2.
Fixed.

Further, since the lever 4 is engaged with the contact rotary gear 16 at the gear portion 4a, the contact rotary gear 16 and the contact rotary gear 16 are engaged with each other.
The plug blade 9a protrudes from the plug body l and comes into contact with the conductor 5 of the wiring duct 2. Regulation of the rotation range of the contactor 9 is achieved by the rotation stop protrusion 16b of the contactor rotating gear 16 engaging with the circumferential end of the guide notch 15a of the insulating frame 14.

To remove the plug, rotate the lever 4 toward the side of the plug body l in the opposite direction to the above. As a result, the fixing rotating piece 11 is oriented vertically as shown in FIG. 8(B), 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. Further, the contact rotary gear 16 is provided with a cylindrical portion 16a, and the contact 9 is provided in the cylindrical portion 16a.
Since the contactor 9 is inserted into the contactor rotation gear 16
The structure for rotating the contactor 9 is simple. Since the contactor 9 is held by the cylindrical portion, it can be held reliably and strong contact pressure can be stably applied. Since the contactor 9 comes into contact with the conductor 5 of the wiring duct 2 while rotating, a cleaning function by wiping can be obtained.

In addition, the hole 15 of the insulating frame 14 through which the cylindrical portion 16a is inserted
A guide notch 15a is provided at the opening edge of the guide notch 15a, and a rotation stop protrusion 16b protruding from the cylindrical portion 16a is rotatably engaged with the guide notch 15a. By engaging with the protrusion 16b, the contact rotary gear 1
6 rotation angles can be controlled. Moreover, the rotation stopper 16
b can prevent the cylindrical portion 16b from being removed from the insulating frame 14. In this way, the rotation stop protrusion 16b can serve both of regulating the rotation angle and preventing removal, so the structure is simple.

In the embodiment described above, the rotation stopper protrusion 16b was used to prevent the contact rotary gear 16 from being removed.
This can also be done by using a ring or passing a pin through it. Further, the rotation range of the contact rotary gear 16 can be restricted by not providing the rotation stop protrusion 16b (but by providing a stop bar that engages with the lever 4, etc.).

〔Effect of the invention〕

In the wiring duct plug of the present invention, the contact rotary gear is provided with a cylindrical portion, and the contact is inserted into the cylindrical portion, so that the contact can be rotated together with the contact rotary gear, and the rotation of the contact can be controlled. The structure is simple. Since the contact is held in the cylindrical part, it is held securely and strong contact pressure can be stably applied.Since the contact rotates and contacts the conductor of the wiring duct, it has a cleaning function by wiping. effective.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the main parts of an embodiment of the present invention, Fig. 2 is an exploded perspective view of the whole, Fig. 3 is an enlarged exploded perspective view of the main parts, and Fig. 4 is the mounting operation. 5 is a side view thereof, and FIG. 6 is a front view thereof.
FIG. 7 is a plan view of the same, and FIG. 8 is an explanatory diagram of the operation of the gear portion. DESCRIPTION OF SYMBOLS 1... Plug body, 2... Wiring duct, 3... Opening, 4... Lever, 4a... Gear part, 5... Conductor, 9... Contact, 9a... Plug blade, lO... Metal frame, 11... Rotating piece for fixing, 14... Insulating frame, 15... Hole, 15a... Guide notch, 16...
...Contact rotating gear, 16a...Cylinder part, 16b...
Rotation stop protrusion Fig. 1 Fig. 4 Fig. 5 Fig. 6 Fig. 7 Fig. 81! ! the law of nature

Claims (1)

[Claims] A contact rotary gear having a cylindrical part protruding from the center is rotatably attached to the plug body, and a plug blade is housed in the cylindrical part and protrudes from the cylindrical part, and the plug blade contacts the conductor of the wiring duct. What is claimed is: 1. A plug for a wiring duct, the plug being provided with an operating means that meshes with the contact rotation gear and rotates the contact rotation gear.