JPS6366130B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an electrical wiring device, and more particularly to an electrical wiring device in which internal electric wires and external electric wires of an electrical device are connected with a connector within a wiring box.

[Technical background of the invention and its problems]

2. Description of the Related Art Conventionally, there has been known an electric wiring device of the type shown in FIG. 1, for example, for connecting electric wires inside the device and electric wires outside the device in an electric device such as an elevator.

In this type of device, a wiring box 2 is fixed inside a wall panel 1 of an elevator.
A branch line 6 from a main line 5 installed on the hoistway side is connected to an insertion hole 3 drilled in the back of the wiring box using a fixing device 4 consisting of a straight connector, an insulating bushing, a screwed lock nut, etc. 2, connect each terminal 10a of the landing pushbutton 10 attached to the front view of the wiring box with the branch wire 6 for each terminal, and connect the internal electric wires to the external electric wires. Do this.

Therefore, the wiring work for this type of equipment is mainly done at the site where electrical equipment such as elevators is installed, and it takes a lot of time to ensure the safety of the work and due to the low efficiency inherent in on-site work, and it also causes problems such as incorrect wiring. problems often arose.

Recently, we have taken this a step further and inserted and fixed external electric wires, which are branch wires from the electrical main line with connectors connected to their ends, into the wiring box, and connected them to each terminal of the landing button. Wiring devices have been proposed that allow for on-site wiring work using connectors.

However, although this wiring device can solve the above-mentioned difficulties in on-site work, in order to insert and fix the branch wire with the connector connected to the wiring box, it is necessary to first make an insertion hole large enough to insert the connector. is required on the back of the wiring box, and if you drill an insertion hole large enough for the connector to pass through, the fixing device is generally smaller than the connector, so
Not only cannot a fixing device be directly attached to the insertion hole, but even if it were installed, the insertion hole would not be completely closed, and dust would enter through the gap and cause damage to the electrical connections. Ta.

[Purpose of the invention]

The present invention has been made to eliminate the drawbacks of the prior art as described above, and an object of the present invention is to provide a simple and accurate electrical wiring device that has a simple structure and is easy to install. .

[Summary of the invention]

In order to achieve this object, the present invention uses a wiring box, and has an insertion opening large enough to allow an external wire connector to be inserted in the back side of the box, and the connector is inserted into the insertion opening. A locking plate into which an external electric wire with a connector is inserted in advance is engaged with the back side of this wiring box, and this connector and an internal electric wire connector arranged on the front side of the wiring box are connected inside the wiring box. Configure it so that

[Embodiments of the invention]

Embodiments of the present invention will be described below based on the accompanying drawings. Note that the same parts as in FIG. 1 are given the same reference numerals.

FIG. 2 is a perspective view of a wiring box secured within an elevator wall panel. The entire front side of the wiring box 12 is open so that an indicator pushbutton component, which will be described later, can be attached thereto, and an insertion opening 13 large enough to allow an external wire connector to be inserted is formed approximately in the center of the back side. This insertion port 13
A screw 14 for tightening the locking plate is provided on the upper part of the locking plate.

FIG. 3 is a perspective view of a locking plate that is locked to the back surface of the wiring box 12. This locking plate 1
5 consists of a board 16 that is somewhat larger than the insertion opening 13, and the insertion opening 13 is located approximately in the center of the board 16.
A smaller insertion hole 17 is drilled, and a fastening hole 18 for engaging with the screw 14 of the wiring box 12 is transparently provided above the insertion hole 17. In addition, a portion of both sides of the lower end of the board 16 is cut out so that the lower end has a width enough to be inserted into the insertion hole 13, and is bent approximately at right angles to the board 16 so that it is approximately parallel to the board 16. It has a bent insertion piece 19 hanging down. This bent insertion piece 19 is composed of a pitched portion 19a and a lower edge 19b.

FIG. 4 is a side view of the locking component inserted into the locking plate 15. This locking component connects an external wire connector 20 to the tip of a branch wire (external wire) 6 via a fixing device 4 fixed to an insertion hole 17 of a locking plate 15.
Connect it.

FIG. 5 is a perspective view of an indicator pushbutton component attached to the front surface of the wiring box 12. This indicator pushbutton component consists of a pushbutton 10 and an internal wire connector 21 connected in advance to its terminal 10a.

Next, on-site assembly and construction of the electrical wiring device according to this embodiment will be explained based on FIG. 6.

First, the locking parts shown in FIG. 4 are manufactured in advance at a factory, and the branch wires 6 and the electrical main wires 5 are wired in a harness and transported to the site.

Further, the indicator push button parts shown in FIG. 5 are also manufactured in advance at a factory or the like, and transported to the site together with the wiring box 12 to be attached.
When assembling the parts delivered to the site in this way, first, the front part of the wiring box 12 is placed on the elevator landing side A, and the back part is placed on the hoistway side B, inside the elevator wall panel 1 that has been prepared in advance. It is fixed with a fixing bracket or anchor bolt (none of which are shown). The locking parts that have already been carried in are then locked to the back side of the wiring box 12. To lock, first insert the external wire connector 20 of the locking component into the insertion hole 13, and then insert the bent insertion piece 19 of the locking plate 15, which is cut out slightly from the insertion hole 13, into the insertion hole 13. Insert into. In this case, bend the step part 19a of the insertion piece 19 into the insertion opening 13.
If the locking part is placed on the lower edge of the wiring box 12 and the locking hole 18 of the locking plate 15 is engaged and tightened with the screw 14 provided on the back side of the wiring box 12, the locking part will connect the external wire connector 20 to the wiring. It is locked and fixed to the wiring box 12 while being housed in the box 12.

Next, the internal wire connector 21 of the indicator pushbutton component that had been delivered to the site was connected to the external wire connector 20 of the locking component in the wiring box 12, and the indicator pushbutton component was attached to the front of the wiring box 12. Once installed, the wiring work is complete.

In the electrical wiring device according to this embodiment, the important wiring connection work is done in advance at a factory, etc., and at the site, the main work is to connect the connectors 20 and 21. Therefore, the work is simple, reliable, and reliable. This also ensures safety and reduces on-site work time.

[Other Examples]

7 and 8 show other embodiments of the wiring box and the locking plate. That is, the wiring box 12-1 shown in FIG. 7 has a locking piece 28 bent outward at the lower end of the insertion opening 13, while the locking plate 15-1 shown in FIG.
1 has a notch groove 29 at the lower end of the substrate 16, so the notch groove 29 is placed on the step 29a of the locking piece 29, and the pin 14 is inserted into the daruma hole of the locking plate 15-1. 18 is engaged and tightened, the locking plate 15-1 is fixed to the back side of the wiring box 12-1.

FIGS. 9 and 10 show still other embodiments of the locking plate. The locking plate 15-2 in FIG. 9 is provided with a mounting groove 39 at the bottom of the board 16, and although not shown, it is used as a wiring box for fixing the locking component equipped with the locking plate 15-2. A mount that engages with the mounting groove 39 is provided at the lower part of the back surface. or,
The locking plate 15-3 shown in FIG. 10 has a mount 49 implanted in the lower part of the board 16, and a through groove that engages with the mount 49 at the lower part of the back of the wiring box (not shown). is provided. These locking plates 1
5-2 and 15-3 constitute a locking component similar to that described above, and the external wire connector of this locking component and the internal wire connector of the indicator pushbutton component are connected within the wiring box to facilitate wire connection. Work will be carried out.

〔Effect of the invention〕

As explained above, in the electrical wiring device according to the present invention, an insertion opening large enough to allow an external wire connector to be inserted is formed in the back side of the wiring box, and the connector is inserted into the insertion opening. A locking plate into which external electric wires are inserted in advance is locked to the back side of the wiring box, and the connector and the internal electric wire connector arranged on the front side of the wiring box are connected inside the box. Therefore, each work can be completed by one person from either the inside or outside of the electrical device without having to reconnect the wiring at the site, resulting in a simple and quick wiring work. Furthermore, since the insertion port is completely closed by the locking plate, there are effects such as preventing dust from entering.

[Brief explanation of drawings]

FIG. 1 is a partially vertical side view of a conventional electrical wiring device, FIGS. 2 to 6 show embodiments of the present invention, FIG. 2 is a perspective view of a wiring box, and FIG. 3 is a perspective view of a wiring box. 4 is a side view of the locking component, FIG. 5 is a perspective view of the indicator pushbutton component, FIG. 6 is a partially vertical side view showing the assembled state of the electrical wiring device, and FIG. 7 and 8 are perspective views of the wiring box and locking plate in other embodiments, and FIG. 9 is a perspective view of the wiring box and locking plate in another embodiment.
10 are perspective views of a locking plate in still another embodiment. 4...Fixing device, 5...Main line, 6...Branch line, 1
2, 12-1... Wiring box, 13... Insertion port, 15, 15-1, 15-2, 15-3... Locking plate, 19... Insertion piece, 20... External electric wire connector, 21 ... Internal wire connector, 28 ... Bending locking piece, 29 ... Notch groove, 39 ... Transparent groove for mounting, 49 ... Mounting element.

Claims (1)

[Scope of Claims] 1. A locking device in which an insertion hole large enough to allow an external electric wire connector to be inserted is formed in the back side of a wiring box, and an external electric wire is inserted with the connector inserted into the insertion hole. Lock the board to the back of the wiring box,
An electrical wiring device in which the connector and an internal wire connector wired from the front side of the wiring box are connected within the wiring box. 2. The electrical wiring device according to claim 1, wherein a bent insertion piece provided at the lower end of the locking plate is inserted and locked into the lower edge of the insertion opening on the back side of the wiring box. 3. Claim 1, wherein the notch groove provided at the lower end of the locking plate is placed on the projection part of the bent locking piece bent at the lower edge of the insertion opening on the back side of the wiring box. Electrical wiring equipment. 4. The electrical wiring device according to claim 1, wherein the mounting groove provided at the lower part of the locking plate is engaged with a mounting element protruding from the lower part of the back surface of the wiring box. 5. The electrical wiring device as claimed in claim 1, wherein the mount installed in the lower part of the locking plate is engaged with the through groove provided in the lower part of the back surface of the wiring box.