JPH0351892Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a terminal structure of a wiring device such as an outlet or a switch.

[Background Art] Generally, in a wiring device such as an outlet, a terminal screw is screwed onto a terminal plate through a rectangular washer to form a terminal portion, and an electric wire is sandwiched between the terminal plate and the washer to form a terminal. Electric wires can be connected by tightening the screws. However, with this structure, the washer rotates when turning the terminal screw. Conventionally, in order to prevent the washer from rotating, the washer was made into a rectangular shape and three sides of the washer were surrounded by walls projecting from the body. However, if the three sides of the washer are surrounded by walls, the wire can only be fed in one direction for connection, which is inconvenient, and the wire must be moved in a direction perpendicular to the length of the wire to insert the wire. There was an inconvenience that the wires could not be inserted from the side.

[Purpose of the invention] The present invention was made in view of the points mentioned above, and the purpose of the invention is not only to prevent the washer from rotating, but also to be able to connect the electric wire by inserting it from any direction. It is to provide a terminal structure that can be used.

[Disclosure of the invention] The terminal structure of the invention consists of a terminal plate A fixed to a body.
A rising piece B is erected on the terminal plate A, a washer C that holds the wire between it and the terminal plate A is placed on the terminal plate A, and the rising piece B is engaged with a notch D provided on the outer periphery of the washer C. Terminal screw E is bent with washer C into a substantially F-shape, a notch D is provided at the end of the ridgeline at the top of this substantially F-shape washer C, and washer C is placed on terminal plate A and the washer C is bent. A rising piece B is engaged with a notch D provided in C, and a terminal screw E is passed through the top of washer C and screwed into terminal plate A,
By configuring as described above, the drawbacks of the conventional example are solved. In other words, the washer C does not rotate due to the engagement between the rising piece B of the terminal plate A and the notch D of the washer C, and since the rotation can be stopped by the above engagement, there is no need for three walls as in the conventional case. Now you can insert and connect wires from either direction.

The present invention will be explained in detail below with reference to examples.

As shown in FIG. 1, the terminal plate A is fixed to the body, and is bored vertically through screw holes F. A pair of rising pieces B are cut and raised on the outer periphery of the terminal plate A so as to face each other. The washer C has a rectangular shape when viewed from above, and has notches D on two opposing sides of the outer periphery. This washer C is placed on the terminal plate A, and the rising piece B is engaged with the notch D so that the washer C can move up and down. Terminal screw E
is screwed into the screw hole F through the washer C. By inserting the end of the wire between the washer C and the terminal plate A and tightening the terminal screw E, the wire can be connected. At this time, since the four circumferences of the washer C are open, it can be inserted from any of the four directions indicated by arrows A, B, C, and D in FIG. It can also be inserted by moving the wire laterally in the direction of arrows E and F in FIG.

2 and 3a and 3b show the terminal structure of the present invention as described above used in an exposed type wiring device, and is used for one terminal of the ground terminal board 5.
The body 2 is made of thermosetting resin, and a first terminal plate 3, a second terminal plate 4, and a ground terminal plate 5 are placed on the upper surface of the body 2 in isolation. This first terminal plate 3, the second
The terminal plate 4 and the ground terminal plate 5 are fixed by locking pieces 15 into locking recesses 16 of the body 2, respectively. The first terminal plate 3 has a first blade receiving spring 3a.
A first terminal screw 6 is screwed onto the first terminal plate 3 via a washer 6a. The second terminal plate 4 has a second
It has a blade receiving spring 4a, and a washer 7a is attached to the second terminal plate 4.
A second terminal screw 7 is screwed therebetween. One terminal of the ground terminal plate 5 has the terminal structure of the present invention, and a first ground terminal screw 8 is screwed into the other terminal of the ground terminal plate 5 via a washer 8a. Terminal screw E serves as a second earth terminal screw. The cover body 1 includes an inner cover 1a and a cosmetic outer cover 1b.
It is composed of. The inner cover 1a is made of a thermosetting resin with excellent heat resistance, and is attached to the body 2 with mounting screws 10.
A is attached. A rectangular convex portion 11 is provided on the upper surface of the inner cover 1a, and the first blade receiving spring 3a and the second blade receiving spring 4 are connected to the convex portion 11.
A plug blade insertion hole 14 corresponding to a is bored. The outer cover 1b is made of a thermoplastic resin with excellent impact resistance, and is fitted onto the inner cover 1a. At this time, a locking protrusion (not shown) provided on the outer cover 1b is locked in a locking recess 12 of the inner cover 1a. The outer cover 1b is provided with a rectangular window 13 corresponding to the convex surface 11 of the inner cover 1a.
The convex portion 11 is exposed through the window portion 13.

[Effects of the invention] Since the present invention is constructed as described above, it is possible to prevent the washer from rotating by the engagement between the rising piece of the terminal plate and the notch of the washer. Rotation is stopped by engagement with the notch, so there is no need for walls on three sides that protrude from the body as in conventional models, and electric wires can be inserted and connected from any direction. A notch is provided at the end of the ridgeline at the top of the washer, the washer is placed on the terminal board, and the rising piece is engaged with the notch provided in the washer, and the terminal screw is passed through the top of the washer and attached to the terminal board. Since they are screwed together, when the terminal screw is tightened and the washer is pushed, the opening angle gradually increases and the approximately V-shaped washer is flattened and crushed to securely and firmly hold the wire. Moreover, the notch is provided at the end of the ridgeline at the top of the washer, which hinders the deformation of the washer when the washer is crushed from a substantially F-shape to a flat shape. It is something that never happens. In other words, if a notch is provided on the lower edge of a substantially square-shaped washer, the position of the notch will move as the washer deforms, and the rising piece may become a hindrance to the deformation of the washer. However, the present invention does not have such a problem. Further, since the washer has a substantially angular shape, the washer can cause the electric wire to move inward so that it does not escape outward.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of one embodiment of the present invention;
The figure is an exploded perspective view of the same applied to the exposed type wiring device, Figure 3a is a plan view of the same assembled, and Figure 3b is a plan view of the same with the cover removed. is a terminal board, B is a rising piece, C is a washer, D is a notch, and E is a terminal screw.

Claims (1)

[Scope of utility model registration request] A rising piece is set up on the terminal board fixed to the body, and the washer that holds the electric wire between it and the terminal board is bent into a substantially F-shape, and the end of the ridgeline at the top of this substantially F-shape washer is A terminal structure in which a notch is provided, a washer is placed on the terminal board, a rising piece is engaged with the notch provided in the washer, a terminal screw is passed through the top of the washer, and the terminal board is screwed together.