JPH01206574A - Electric wire connecting apparatus and enclosed power distribution board equipped with same - Google Patents

Abstract

PURPOSE:To omit such processes as folding an electric wire and leading here and there by arranging conductive member accommodation part at a right angle up and down, pressure fitting a conductive plate in an insert part to connect insert holes provided at these parts with each other, and wiring with a fixing means installed in the insert holes. CONSTITUTION:A nut 32 of a wiring member 3 is fitted to nut seats 161, 171 of conductive member accommodation parts 11. Then the insert part 21 of a conductive plate 2 is inserted in an insert hole 15 in a terminal block 1, and a detaining protrusion 25 is put in contact with the inner wall of this insert hole 15, and the conductive plate 2 is pressure fitted in each insert hole 15. Thereby each conductive plate 2 is provisionally fixed to the accommodation part 11 of the terminal block 1, and the nut 32 is also held by the hooking part 22 and insert part 21 of the conductive plate 2, and there is no risk any more of being slipped off from the nut seats 161, 171. The bolt 31 is inserted in a holddown hole 23 with a spring washer 33 and a washer 34 interposed and screw fitted with the nut 32 in the hooking hole 16 to provide a wiring part. Alike the bolt 31 is inserted in the holddown hole 24 and screw fitted with the insert hole 176 and nut 32 to provide a wiring part.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Applicability] The present invention relates to a wire connector and a closed switchboard equipped with the wire connector.

[Prior art and its issues] In the unit frame of a closed power distribution board such as a control center, switches, breakers, auxiliary relays, etc. that need to be inspected among the control equipment are installed on the front side where the unit folds. Some unnecessary transformers (C, T) for current needles are attached to the back side. Additionally, there is a tendency to use the back side of the unit frame for wiring so that the front side of the unit frame is not congested by the wiring. On the other hand, in a unit frame with such a structure, the terminal connection part that connects the load-side lead-in wire in the wiring duct is located on the side of the unit frame inside the closed switchboard from the viewpoint of workability on the customer side. It is convenient to provide it on the side of the unit frame so that wiring work can be done from the front of the wiring duct. However, from the manufacturer's perspective, the main circuit wiring derived from transformers and other control equipment is thick and difficult to bend depending on its rating, making it difficult to make the wiring compact. This is inconvenient from the standpoint of downsizing the shutoff switchboard, both on the front side and the rear side of the unit frame.

Therefore, in order to avoid the need for complicated bending when connecting the wiring inside the unit frame that is led out directly to the unit frame, we decided to connect the load side electric wires located on the control equipment side on the back side of the unit frame and on the side of the unit frame. A wire connector is required to be inserted between the two.

These wire connectors meet two requirements: on the one hand, the consumer side must be able to easily connect wires from the front side of the wiring duct, which has been formed narrower due to miniaturization, and on the other hand, the manufacturer side also has to At times, it is necessary to satisfy two requirements: it must be easy to connect within the unit frame and the wiring must be compact. Therefore, the connection direction of the terminal connection part on the transformer and other control equipment side and the connection direction of the terminal connection part of the load side electric wire will inevitably form a predetermined angle, and the working direction (- Naturally, the axial direction of the terminal tightening bolt will also be different.

Further, in the closed switchboard having the above structure, the positional relationship between the connection work parts on the consumer side and the manufacturer side must be on the front side and the back side, or on the left side and the right side with the electric wire connection in between.

An example of a wire connector in which the terminal connection parts at both ends make a predetermined angle in the connection direction is the Utility Model Publication No. 51-1 shown in Fig. 8.
There is a terminal board disclosed in No. 6684.

In this terminal board, the connection work portions of the terminal connection portions are located on the same side, and the connection work directions thereof are perpendicular to each other. When connecting electric wires, the connection work direction is indicated by arrows C and D.
This is the direction shown.

In this structure, the connection work parts of the terminal connection part are on the same side, so the connection work parts on the consumer side and the manufacturer side must be located on the front and back side with the wire connector in between. In the case of a power distribution board, a terminal board with this structure cannot be used.

[Object of the present invention] The present invention provides a method for connecting two electric wires with different connection work parts and connection work directions, by locating the connection work parts of the wires on opposite sides and bending the wires as much as possible. To provide a wire connector that eliminates the need for wiring and a closed switchboard equipped with the wire connector.

[Structure of the Invention] The structure of the present invention taken to solve the above problems and achieve the object is as follows.

That is, the first invention is an electric wire connector capable of connecting two electric wires at different connection work positions and connection operation directions, the electric wire connector comprising a required number of mutually insulated conductive member accommodating parts. are arranged in parallel, and both sides of the conductive member accommodating part are opened at a right angle or at a certain angle, and an insertion hole passing through the openings is formed between the openings. a conductive member that is bent in accordance with the angle formed by the openings and has fixing means for fixing the terminal of the electric wire at both ends; the conductive member is inserted into the insertion hole; The present invention is an electric wire suction thread charger which is fixed to a conductive member accommodating part by a fixing means.

In the first invention, the angle formed by both openings is appropriately set as necessary.

Examples of means for fixing the conductive member in the conductive member accommodating portion include means for setting the thickness of the conductive member so that it fits slightly tightly into the insertion hole of the terminal block, and fixing the conductive member by press-fitting it into the insertion hole. Can be done.

Another method is to use screws to secure the wire terminals, and when inserting the conductive member, attach the screw to the floor of the conductive member accommodating part of the terminal block that corresponds to the screw. Examples include means for fixing the conductive member so that it does not move in the insertion direction by providing a locking hole for accommodating the tip portion or a threaded portion.

Moreover, both of the above means can also be used together.

The bending angle of the conductive member is formed to be various depending on the angle formed by the opening of the terminal block.

Fixing means for fixing the terminals of the electric wires are provided at both ends of the conductive member. As the fixing means, a mounting hole is usually formed in the conductive member, and a fastening member such as a bolt, a nut, a stud, etc. is attached to the mounting hole. - For tightening, a nut is inserted into the latching hole, and a bolt, etc. is inserted from the outside and tightened, but the bolt head is inserted into the latching hole, and the wire terminal and washer are attached to the threaded part of the bolt that protrudes outside. You can also attach something like this and tighten it with a nut. In that case, the bolt relief hole for the locking hole can be omitted.

Incidentally, the structure of the fixing means is not limited to this, and a structure can also be provided in which a thread is cut in the mounting hole and a bolt is screwed into the mounting hole so that a nut is not used.

In the second invention, in the closed switchboard, the electric wire connector of claim 1, which is attached across the back and side surfaces of the unit frame, has a wiring space open to the outer surface of the unit frame at both ends thereof. death,
The connection member for electric wires introduced into the connection space on the back side along the back outer surface of the unit frame is such that its connection work means is accessible from the back side, and the connection work direction of the connection work means is directed toward the back side of the unit frame. , The connection member for electric wires introduced into the connection space on the side surface along the outside surface of the unit frame is such that the connection work means thereof is accessible from the front side of the unit on the outside surface of the unit frame, and the connection work means of the connection work means is accessible from the front side of the unit. This is a shut-off switchboard whose direction is toward the outside surface of the unit frame.

[Example] The present invention will be explained in more detail based on the example shown in the drawings.

Fig. 1 is a sectional view showing the structure of the wire connector, Fig. 2 is a front view of the terminal block, Fig. 3 is a bottom view, Fig. 4 is an I-1 sectional view, and Fig. 5 is a front view of the conductive plate. , FIG. 6 is a side view.

Reference numeral 1 denotes a terminal block, which is made of synthetic resin, which is an insulator. In the terminal block 1, conductive member accommodating portions 11 are arranged in parallel and partitioned by partition walls 10 and provided for each phase. Each conductive member accommodating portion 11 includes a wire connection space 12 and a wire connection space 13 provided above and below in the figure. The wire connection space 12 and the wire connection space 13 are formed so that the wire connection directions are substantially perpendicular to each other, and are connected by an insertion hole 15.

The wall 101 of the wire connection space 12 is provided with a protrusion 14 on the back side and a hook hole 16 is formed therein. The latching hole 16 has a nut seat 161 and a nut seat 161 that allow a nut 32 of a connection member (to be described later) to be mounted with some margin without rotating.
A bolt relief hole 162 connected to the back of the hole 61 is provided.

An insertion hole 17 is provided in the wall 102 of the wiring space 13 so that its axis is orthogonal to the above-mentioned latching hole 16; the insertion hole 17 is also a latching hole! 6, the nut seat 171 and the bolt relief hole 172 are formed.

Incidentally, on the front surface of the terminal block 1, a mounting portion 18 for mounting inside a wiring duct is provided protrudingly, and the mounting portion 18 is provided with mounting holes 181 at two locations.

The insertion hole 17 is formed on the back side of the mounting portion 18. The insertion hole 15 connecting the wire connection space 12 and the wire connection space 13 is formed so that the gap on the wire connection space 13 side is large and becomes slightly smaller toward the wire connection space 12 side.

A conductive plate 2 is attached to each insertion hole 15. As shown in the figure, the conductive plate 2 has an L-shape bent at a substantially right angle, with a long side serving as an insertion portion 21 and a short side serving as a hook portion 22.

A mounting hole 23 is provided on the end side of the insertion portion 21,
A mounting hole 24 is similarly formed on the end side of the hooking part 22. Each mounting hole 23, 24 is provided at a position corresponding to the above-mentioned latching hole 16 and insertion hole 17 during insertion, and the mounting hole 2
The wiring member 3 is attached to 3.24. Wiring member 3
, bolt 31, nut 32, spring washer 33, washer 34
Consisting of

Furthermore, a circular engagement protrusion 25 is provided approximately at the center of the insertion portion 21 by stamping. Engagement protrusion 2
The protrusion height of 5 is set to a height that allows the conductive plate 2 to fit into the insertion hole 15 somewhat tightly when inserted into the insertion hole 15. Note that conductive plates 2 with different thicknesses are used depending on each rated capacity, but since the engagement thickness, which is the sum of the plate thickness and the protrusion height of the engagement protrusion 25, is constant, it is possible to use conductive plates 2 with different thicknesses. However, they can be inserted into the same insertion hole 15, and the terminal block 1 can be shared.

With reference to the drawings, the mounting structure and function of each conductive plate 2 and terminal block 1 will be explained together.

First, the nut seats 161 and 171 of each conductive member accommodating portion 11
Attach the nut 32 of the wire connection member 3 to the.

Next, the insertion portions 21 of the conductive plate 2 are inserted into the insertion holes 15 of the terminal block 1, the engaging protrusions 25 and the inner walls of the insertion holes 15 are brought into contact, and the conductive plate 2 is press-fitted into each insertion hole 15. As a result, each conductive plate 2 is slightly fixed to the conductive member accommodating portion 11 of the terminal block 1, and the nut 32 is also held down by the insertion portion 21 and the hooking portion 22 of the conductive plate 2, so that it does not come off from the nut seat portion 161,171. Then, the bolt 31 is inserted into the mounting hole 23 via the spring washer 33 and the washer 34, and is screwed into the nut 32 of the locking hole 16 to form a connection portion. As a result, the conductive plate 2 is fixed to the wire connection member 3, and due to the fitting contact between the wire connection member 3 and the locking hole 16, it cannot move in the insertion direction and cannot be pulled out from the insertion hole 15. Similarly, the bolt 31 is inserted into the mounting hole 24 via the spring washer 33 and the washer 34, and the bolt 31 is inserted into the mounting hole 17.
It is screwed onto the nut 32 to form a connection part. In this way, the conductive plate 2 is fixed to the terminal block 1 by contacting the portion of the conductive plate 2 provided with the engaging protrusion 25 with the inner wall of the insertion hole 15 and the connection between the wiring member 3 and the latching hole 16. This is done by contacting the electrically conductive plate in the insertion direction, and no force is used to tighten bolts, nuts, etc. of the connection part, and force is used only for connection of the electric wires.

Therefore, unlike conventional wire connectors, the structure is not such that the conductive plate is fixed and the wires are connected at the same time using the same bolt, so problems such as cracks in the mold due to excessive tightening during wire connection do not occur. Also, since there is no need to worry about this, there is the advantage that the tightening force can be increased when connecting wires.

If the rated capacity changes later, you will have to change to conductive plate 2 with a different thickness, but as mentioned above, terminal block 1
Since a common one can be used, only the conductive plate 2 needs to be replaced, and there is no need to replace the terminal block 1 as in the conventional case. By using the terminal block 1 as a component in this way, the cost can be reduced, inventory management can be made easier, and the entire electric wire connector can be made cheaper.

FIG. 7 is a schematic explanatory diagram showing how the closed switchboard is attached to the unit frame.

The wire connector is attached to a mounting portion 51 provided on the unit frame 5 of the closed switchboard 500 with mounting screws 4 at an angle with respect to the insertion/removal direction of the unit frame 5. 52.5
Reference numeral 3 denotes a through hole through which the wire connector passes through the unit frame 5, through which the wire 6.7 can be introduced from the outside of the unit frame 5 into the connection space 12.13 of the wire connector and connected to the conductive plate 2.

The wiring space 12 side becomes the connection side of the electric ta+3 on the control equipment side, and the wiring space 13 side becomes the connection side of the load side electric wire 7.

The working direction during the wiring work of each part is shown by arrows A and B, and the working part is on the opposite side across the terminal block 1.
Further, the positional relationship is such that the unit frame 5 is introduced from different sides, that is, the back side and the side side.

According to this, the manufacturer side at the time of manufacturing the electric wire 6 of the control equipment side
There is no need to bend the electrical PA6 when connecting, making the wiring easy and compact. After manufacturing, when installing it at a consumer and connecting the load-side electric wire 7, opening [9 of the wiring duct 8 and connecting the wires can be easily performed from the front side of the wiring duct 8.

It should be noted that the present invention is not limited to the illustrated embodiment, and many modifications can be made within the scope of the claims.

[Effects of the Invention] The present invention has the above-mentioned configuration, and when connecting two electric wires at different connection work positions and connection work directions, there is no need to bend or route the electric wires as much as possible. In addition, it is possible to provide an electric wire connector in which the electric wires are connected at opposite sides to each other, thereby facilitating connection work from different sides of the attachment rod of the electric wire connector. Therefore, by attaching it to a unit frame such as a power distribution board that has a terminal connection part for the load side terminal on the side of the unit frame, it is possible to easily and compactly connect the electric wires from the control equipment side on the back side of the unit frame during manufacturing. When connecting the load side electric wires, the wiring work can be easily done from the front side of the wiring duct.

[Brief explanation of the drawing]

Figure 1 is a sectional view showing the structure of the wire connector, Figure 2 is a front view of the terminal block, Figure 3 is a bottom view, and Figure 4 is a cross-sectional view of the summer-1. Figure s5 is a front view of the conductive plate, Figure 6 is a side view, Figure 1 is a front view of the terminal block, 's7
The figure is a schematic explanatory diagram showing how the closed switchboard is attached to the unit frame, and FIG. 8 is a perspective view of a conventional terminal board. 1 - Terminal block 11: Conductive member accommodating portion 12.13: Wiring block 15: Insertion hole 16: Latching hole 2: Conductive plate 25; Engagement protrusion 3: Wiring member 500: Closed switchboard

Claims (1)

[Scope of Claims] 1. An electric wire connector that can connect two electric wires at different connection work positions and connection operation directions, which comprises: a required number of mutually insulated conductive member housing parts; are installed in parallel,
Both sides of the conductive member accommodating portion are opened at a right angle or at a certain angle, and an insertion hole passing through the openings is formed between the openings, and each of the openings is connected to a terminal located on the opposite side. a block; a conductive member that is bent in accordance with the angle formed by the openings and has fixing means for fixing the terminal of the electric wire at both ends; An electric wire connector characterized in that it is fixed to a conductive member housing part. 2. In a closed switchboard, the wire connector according to claim 1, which is installed across the back and side surfaces of the unit frame, has a connection space that is open to the outside of the unit frame at both ends, and extends along the back and outside of the unit frame. The connection member for the electric wires introduced into the connection space on the back side has its connecting work means accessible from the back side, and the connecting work direction of the connecting work means faces the back side of the unit frame, and is connected along the outer surface of the unit frame. The connection member for the electric wire introduced into the side connection space is such that its connection work means can be approached from the front side of the unit on the outside surface of the unit frame, and the connection work direction of the connection work means is directed toward the outside surface of the unit frame. Closed switchboard characterized by facing.