JP2542020B2 - 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, in a plug for a wiring duct, there is a structure in which the contactor is a leaf spring and is bent by a cam or the like as a structure in which the contactor is brought into contact with and separated from the conductor of the wiring duct when the plug is attached to or detached from the wiring duct.

However, since the tips of the contacts come into contact with and separate from the conductor of the wiring duct while facing each other, there is a problem that the contact reliability is poor. That is, since it does not have a cleaning function by wiping, when an oxide film is present on the conductor or an insulating foreign substance is caught, these cannot be removed, resulting in poor contact. Further, since the contactor is to flexure against the conductor to obtain the contact pressure, it is necessary that the contactor has an excellent spring property. However, if the cross-sectional area of the contactor is increased for a large current, There is a problem that a good spring property cannot be obtained and it is difficult to make a large current one.

Then, a method of rotating the contact to bring it into contact with the conductor of the wiring duct was considered, but there was no simple structure for rotating the contact.

[Object of the Invention]

An object of the present invention is to provide a wiring duct plug having a simple structure and capable of reliably contacting a contact.

[Disclosure of Invention]

A plug for a wiring duct according to the present invention is provided with a contactor rotating gear having a cylindrical portion protruding from the center thereof, and the contactor is provided in the cylindrical portion. This contactor is provided with a blade that projects from the cylindrical portion and contacts the conductor of the wiring duct. Further, there is provided an operating means that meshes with the contactor rotating gear to rotate the contactor rotating gear.

According to this configuration, the contactor rotary gear is provided with the tubular portion, and the contactor is inserted into the tubular portion. Therefore, the contactor can be rotated together with the contactor rotating gear, and the structure for rotating the contactor is provided. It's easy. Since the contactor is held by the tubular portion, the holding is reliable and a strong contact pressure can be stably applied. Since the contactor contacts the conductor of the wiring duct while rotating, a cleaning function by wiping can be obtained.

Embodiment 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 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. Wiring duct 2
Is a substantially groove-shaped one having a lip portion 2a, and has 3
The conductor 5 of the book is provided so as to be exposed 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. 4 (C), the plug blade 9a of the contact and the tip 9a 'of the ground pin project on both side surfaces and the upper surface of the head cover 8,
The blade 9a and the tip 9a 'of the ground pin come into contact with each conductor 5 of the wiring duct 2. The metal frame 10 is on the top of the body 6.
Is provided (see FIG. 3), and is located at both ends of the body 6 and is fixed to the metal frame 10 by a rotating piece for fixing which also serves as a ground contact.
11 is attached with a fixed shaft 12. As shown in FIG. 4C, the plug body 1 is fixed to the wiring duct 2 by vertically sandwiching the lip portion 2 a of the wiring duct 2 between the fixing rotating piece 11 and the metal frame 10.

FIG. 2 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 contactor 9 provided with the plug blade 9a is of a leaf spring type, and has a cylindrical portion 16a of the contactor rotary gear 16 inserted into the hole 15 of the insulating frame 14.
Install inside. The lower part of the insulating frame 14 fits into the elongated hole of the metal frame 10.

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 tip 9a 'of the ground contact 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 contactor rotating gear 16, the gear portion 4a of the lever 4, and the terminal block 21 are housed inside. Three terminal plates 22 and 22 'are arranged in each partition chamber in the terminal block 21, and the crimping terminals 23a of the lead wires 23 of the contact 9 are provided with terminal screws (not shown) on the upper ends of the terminal plates 22 on both sides. Connected by. The lead wire 23 is made of a flexible copper stranded wire and absorbs the rotation of the contactor 9. The central terminal plate 22 'has a plate spring portion bent in a U shape,
The earth pin 9'is urged upward. An electric wire for extracting current and a ground wire are connected to the lower ends of the terminal plates 22 and 22 'by terminal screws (not shown).

FIG. 1 is an enlarged sectional view of a main part. The contactor rotary gear 16 to which the contactor 9 is mounted has a tubular portion 16a protruding from the center thereof, and the tubular portion 16a has a split tubular shape in which split grooves are formed at two locations in the circumferential direction. A rotation stop protrusion 16b is provided on the upper end of the cylindrical portion 16a. In the contactor rotary gear 16, the tubular portion 16a is inserted into the hole 15 of the insulating frame 14, the annular recess around the tubular portion 16a is loosely fitted in the boss portion 14a of the insulating frame 14, and the rotation stopping projection 15a is bored. It engages with a guide notch 15a formed at the opening edge of the upper surface of 15. The contact rotary gear 16 on the right side of FIG. 1 is in the state of being inserted into the hole 15. The contact rotary gear 16 is made of a resin molded product, and the split cylindrical tubular portion 16a bends inward to allow the rotation stop projection 15a to pass through the hole 15. After passing through the hole 15, the cylindrical portion 16a is elastically restored and the rotation stopping projection 15a engages with the guide notch 15a. The guide notch 15a is
As shown in FIG. 3 and FIG. 2, the contact is rotated within a range of about 1/4 in the circumferential direction, and the contact is rotated within a range until the rotation stop projection 16b engages with the circumferential end of the guide notch 15a. The gear 16 can rotate.

As shown in FIG. 8, the contactor rotating gear 16 meshes with the gear portion 4a of the lever 4, and when the lever 4 is rotated, the contactor 9 also rotates together. Gear part of lever 4
The interlocking mechanism 30 is composed of 4a and the gear 16. The pair of levers 4 are rotatable within a range between an angle of opening to the outside and an angle of protruding to the same side surface side of the plug body 1. The fixing rotating piece 11 is provided with the notch 11a to avoid interference with the insulating frame 14.

The attachment / detachment of the plug for the wiring duct will be described. When mounting, as shown in FIGS. 4 (A) and 8 (A), the head cover 8 of the plug body 1 is attached to the wiring duct 2 while the pair of levers 4 are projected to the same side surface side. insert. In this state, by rotating both levers 4 to the outside by about 90 °, the fixing rotating piece 11 directly connected to the lever 4 is turned sideways as shown in FIG. 8 (A), and both ends thereof are connected to the wiring duct 2 Engages with the lip portion 2a (Fig. 4 (C)). Therefore, the plug body 1 is fixed to the wiring duct 2.

Further, since the lever 4 meshes with the contactor rotating gear 16 at the gear portion 4a, the contactor 9 also rotates together with the contactor rotating gear 16, and its blade 9a projects from the plug body 1 and the conductor 5 of the wiring duct 2 Contact with. The rotation range of the contactor 9 is regulated by setting the rotation stop projection 16b of the contactor rotating gear 16 to the insulating frame 1.
It is obtained by engaging with the circumferential end of the guide notch 15a of 4.

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 in FIG. 8 (B), 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. Further, since the contactor rotary gear 16 is provided with the tubular portion 16a and the contactor 9 is inserted into the tubular portion 16a, the contactor 9 can be rotated together with the contactor rotary gear 16 and the contactor 9 can be rotated. The structure is simple. Since the contactor 9 is held by the tubular portion, it is held securely and a strong contact pressure can be stably applied. Since the contactor 9 contacts the conductor 5 of the wiring duct 2 while rotating, a cleaning function by wiping can be obtained.

Further, a guide notch 15a is provided at the opening edge of the hole 15 of the insulating frame 14 which is inserted through the tubular portion 16a, and a rotation stop projection 16b protruding from the tubular portion 16a is rotatably engaged with the guide notch 15a. Therefore, the rotation angle of the contact rotary gear 16 can be regulated by the engagement between the circumferential end of the guide cutout 15a and the rotation stop projection 16b. Moreover, the rotation stop protrusion 16b can prevent the tubular portion 16b from coming off the insulating frame 14. In this way the rotation stop protrusion
The structure is simple because the rotation angle can be restricted and the retainer can be prevented by 16b.

In the above embodiment, the contact rotary gear 16 is prevented from coming off with the rotation stopping projection 16b, but this coming off can also be done by using, for example, an E-ring or by inserting a pin. Further, the rotation range of the contact rotary gear 16 can be regulated by providing a stopper that engages with the lever 4 without providing the rotation stopping projection 16b.

〔The invention's effect〕

In the plug for the wiring duct according to the present invention, since the contact rotary gear is provided with the tubular portion and the contact is inserted into the tubular portion,
The contactor can be rotated together with the contactor rotating gear, and the structure for rotating the contactor is simple. Since the contactor is held by the tubular portion, the holding is reliable and a strong contact pressure can be stably applied. Since the contactor contacts the conductor of the wiring duct while rotating, there is an effect that a cleaning function by wiping can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of an embodiment of the present invention, FIG. 2 is an exploded perspective view of the entire part, FIG. 3 is an enlarged exploded perspective view of the same part, and FIG. And FIG. 5 is a side view of the same, FIG. 6 is a front view of the same,
FIG. 7 is a plan view of the same, and FIG. 8 is an operation explanatory view of a gear portion thereof. 1 ... Plug body, 2 ... Wiring duct, 3 ... Opening, 4
...... Lever, 4a ...... gear part, 5 ...... conductor, 9 ...... contact, 9a ...... plug blade, 10 ...... metal frame, 11 ...... fixing rotating piece, 14 ...... insulating frame, 15 ... … Hole, 15a …… Guide notch, 16 …… Contact rotating gear, 16a …… Cylindrical part, 16b …… Rotation stop projection

Claims (1)

(57) [Claims] 1. A contact rotary gear having a cylindrical portion projecting from the center thereof is rotatably attached to a plug body, and has a blade that is housed in the cylindrical portion and protrudes from the cylindrical portion. A plug for a wiring duct, which is provided with a contactor that comes into contact with the conductor and is provided with an operating means that meshes with the contactor rotation gear to rotate the contactor rotation gear.