JPH05258784A - Electric appliance and terminal device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a terminal device and an electric appliance in which a connecting structure of a washer and a terminal screw is simplified. [Structure] A washer is connected to the neck of the terminal screw by a method for manufacturing a washer-incorporating screw to interlock with the advance / retreat of the terminal screw, and the terminal screw is screwed into the terminal provided on the body to connect the electric wire to the terminal. It was made to connect with a washer. [Effect] The washer can be formed by a method similar to that of a general washer-incorporating screw, which facilitates manufacture and also facilitates the turning operation of the terminal screw from the body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric appliance and a terminal device for connecting an electric wire to a terminal with a terminal screw.

[0002]

2. Description of the Related Art Connecting an electric wire to a terminal arranged on a body,
For example, an earth leakage breaker using a terminal device with a washer is known.

This terminal device with a washer is disclosed in
As shown in Japanese Patent No. 57-17076, when the upper plate of the washer formed in a U-shape is moved forward and backward with the screw of the terminal, and when loosening the terminal screw and inserting the electric wire into the terminal, the washer is By interlocking with the terminal screw, the electric wire can be easily inserted into the electric wire insertion hole of the terminal by operating the terminal screw.

[0004]

[Problems to be Solved by the Invention]
In the terminal device shown in Japanese Patent Publication No. 17076, the washer must be provided with an engaging portion and the engaging portion must be engaged with the collar of the flanged screw to form the structure of the washer and the terminal screw. Is complicated and requires work such as engaging the washer with the collar of the screw, making the manufacturing troublesome and screwing and loosening the terminal screw against the elastic force of the engaging part of the washer. It has to be performed, which causes inconvenience such as poor workability.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an electric appliance and a terminal device which are simple in structure and easy to manufacture.

[0006]

An electric appliance according to claim 1 has an electric wire insertion portion, and the electric wire insertion portion is provided in a body having a screw operation hole at a position substantially perpendicular to the electric wire insertion portion. Terminal screw that has a wire insertion hole facing each other and is formed in a box shape and that has a screw hole provided in the screw operation hole, and a washer is installed in the screw hole of this terminal screw. In the electrical equipment in which the washer is screwed in and the electric wire inserted from the electric wire insertion part is tightened by operating from the screw operation hole of the body, connect the washer to the neck of the terminal screw by the manufacturing method of the washer built-in screw. However, it is designed to interlock with the advance / retreat of the terminal screw.

In the terminal device according to the second aspect of the present invention, a box-shaped terminal having an electric wire insertion hole on at least one side is provided with a screw hole, and a terminal screw having a washer is screwed into the screw hole. In the terminal device that is configured to tighten and connect the electric wire inserted from the electric wire insertion hole, connect the washer to the neck of the terminal screw by the manufacturing method of the washer built-in screw,
It is designed to interlock with the advance / retreat of the terminal screw.

[0008]

In order to assemble the washer into the terminal screw, the plate-shaped washer is inserted into the rod-shaped portion of the screw which is not threaded, and the washer-assembled screw is manufactured into the rod-shaped portion by the manufacturing method. After forming the threaded portion, the washer is bent into a U shape. As a result, the washer is integrally coupled to the neck portion of the terminal screw without blocking the rotation of the screw, and the terminal screw is screwed into the screw hole of the terminal to interlock with the advance / retreat of the terminal screw. Therefore, by rotating the terminal screw from the screw operation hole of the body, the washer is also interlocked, and the electric wire can be easily connected.

Moreover, since the washer is joined to the terminal screw by the method for manufacturing the washer-incorporated screw, it can be formed by the same method as a general washer-incorporated screw, facilitating the manufacture and the pivoting operation of the terminal screw. You can

According to the invention of claim 2, as a terminal device, the washer is connected to the terminal screw by a manufacturing method of a washer-incorporated screw as in the case of claim 1, so that the manufacturing is easy and the turning operation of the terminal screw is also easy. Become.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 3 show an embodiment applied to an earth leakage breaker. Reference numeral 1 denotes a body, which is composed of a base portion 2 formed of an electrically insulating material such as a synthetic resin and a cover portion 3 coupled to the base portion 2, and a side surface, a book In the embodiment, the power source side is provided at both ends of the joint between the base portion 2 and the cover portion 3,
The electric wire insertion portions 4 and 5 on the load side are provided. A functional component (not shown) as an earth leakage breaker including a terminal 6 described later is housed in this container 1. The terminal 6 is formed in an elongated box shape having openings at both ends, and one opening is formed in the electric wire insertion hole 7 and a fixed terminal portion 8 having a fixed contact is extended and connected to the other opening. There is.

The terminal 6 is provided with a screw hole 9 at a position substantially perpendicular to the wire insertion hole 7, and a terminal screw 10 is screwed into the screw hole 9. 11 is a washer, and this washer 11 has facing pieces 12 and 13 facing each other and has a substantially U shape, and one of the facing pieces 12 is attached to the neck of the terminal screw 10 to manufacture a screw for installing a washer. And the other opposite piece 13 is disposed inside the terminal 6 so that the terminal screw 10
It is linked to the advance and retreat of. Next, a process of connecting the washer 11 to the terminal screw 10 will be described. Through hole on one end
The elongated conductive plate-shaped body 15 provided with 14 is inserted into the rod-shaped portion 16 of the terminal screw 10 in a state where the through hole 14 is not threaded, and the threaded portion 17 is formed on the rod-shaped portion 16 in this state. To do. That is, the plate-shaped body 15 is rotatably attached to the neck portion of the terminal screw 10 in the same process as the manufacturing process of a general washer-incorporated screw. After that, by bending the plate-shaped body 15 into a U shape,
Opposed piece portions 12 and 13 are formed, and the terminal screw 10 is attached to one opposed piece portion 12.

To attach the terminal screw 10 to the terminal 6, the other facing piece portion 13 of the washer 11 is inserted inward from one opening of the terminal 6, that is, the wire insertion hole 7 side in this embodiment. The screw portion 17 of the terminal screw 10 may be screwed into the screw hole 9. As a result, one facing piece 12 of the washer 11 is located outside the terminal 6,
The other facing piece portion 13 faces the receiving surface 18 inside the terminal 6,
The other facing piece portion 13 serves as a holding portion for holding the electric wire.
That is, the washer 11 is interlocked with the forward / backward movement of the terminal screw 10 by the turning operation of the terminal screw 10, and by tightening the terminal screw 10, the other facing piece portion 13 holds down the electric wire 19.

The cover portion 3 of the body 1 is formed with a screw operation hole 20 through which the terminal screw 6 can be rotated.

Reference numeral 21 is another wire insertion hole for a neutral pole, 26 is a screw operation hole formed in the shape of a round hole provided at a position substantially perpendicular to this wire insertion hole 21, and 22 is the above-mentioned wire insertion hole. Two terminal screws for connecting the electric wire inserted from the hole 21, 23
Is an operation handle, 24 is a test button, and 25 is a display unit.

Next, the operation of this embodiment will be described. To connect the electric wire 19 to the terminal 6, the terminal screw 10 is loosened in the screw operation hole 20 of the body 1 using a tool such as a screwdriver. At this time, since the washer 11 is connected to the neck portion of the terminal screw 6, it interlocks with the forward / backward movement of the terminal screw 6, and the other facing piece portion 13 separates from the receiving surface 18 of the terminal 6 and the receiving surface 18 and the other side. The electric wire 19 is connected to the terminal 6 by inserting the electric wire 19 between the electric wire 19 and the facing piece portion 13 and tightening the terminal screw 10.

The invention of the present application is not limited to the above-mentioned embodiments, and allows various embodiments. For example, the electric appliance may be used alone as a terminal block. Moreover, the screw hole of the terminal may be formed by continuously forming a plurality of holes.

[0018]

As described in detail above, the invention of claim 1 has a terminal and a terminal screw screwed into the terminal, and the operation of the terminal screw is performed through a washer from a screw operating hole provided in the body. In the electrical equipment that was designed to be performed by connecting the washer to the neck of the terminal screw by the manufacturing method of the washer built-in screw,
Since it is made to interlock with the forward / backward movement of the terminal screw, the washer can be formed by the same construction method as a general washer-incorporating screw, facilitating the manufacture and rotating the terminal screw from the body easily. Also, the connection of electric wires becomes easy.

According to a second aspect of the present invention, there is provided a terminal device having a terminal and a terminal screw screwed into the terminal, wherein the electric wire is connected to the terminal through the washer, and the washer is a washer on a neck portion of the terminal screw. Since it is connected by the manufacturing method of the built-in screw and interlocked with the forward and backward movement of the terminal screw, the washer can be formed by the same construction method as the general washer built-in screw
This facilitates manufacturing, facilitates turning operation of the terminal screw, and facilitates connection of electric wires.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an essential part of an electric appliance showing the present embodiment.

FIG. 2 is a perspective view of the electric appliance shown in FIG.

FIG. 3 is a perspective view of the above terminal device.

[Explanation of symbols]

1 ... Body, 4 ... Wire insertion part, 6 ... Terminal, 7 ... Wire insertion hole, 9 ... Screw hole, 10 ... Terminal screw, 11 ... Washer,
12, 13… Opposite piece, 20… Screw operation hole.

Claims (2)

[Claims] 1. A box having a wire insertion portion on a side thereof and a screw operation hole provided at a position substantially perpendicular to the wire insertion portion; and a box having a wire insertion hole facing the wire insertion portion. A terminal that is formed into a shape and is provided inside the body by providing a screw hole for the screw operation hole; and an electric wire that is screwed into the screw hole of the terminal and that is inserted from the electric wire insertion portion is operated by the screw operation of the body. A terminal screw that is operated from a hole and connected to the terminal; it has a substantially U-shape having opposing pieces that oppose each other, and one of the opposing pieces is connected to the neck of the terminal screw by the method for manufacturing a screw with a washer. And a washer which is located outside the terminal and has the other opposing piece disposed inside the terminal and is interlocked with the forward and backward movement of the terminal screw. 2. A terminal which is formed in a box shape having an electric wire insertion hole on at least one side and which is provided with a screw hole at a position substantially perpendicular to the electric wire insertion hole; and the electric wire insertion hole screwed into the screw hole. A terminal screw for connecting the electric wire inserted in the terminal to the above terminal;
It has a facing U-shaped part facing each other and has a substantially U shape, and one of the facing one-sided parts is connected to the neck part of the terminal screw by a manufacturing method of a washer-incorporating screw and is positioned outside the terminal, and the other facing-side part A washer which is disposed in the terminal and is interlocked with the advance / retreat of the terminal screw;