JPS6328529Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a board fixing connection terminal that is fixed to a substrate of a printed wiring board or a busbar circuit board to make an electrical connection.

This type of connection terminal involves inserting a protrusion into a hole provided in the board and fixing the protrusion and printed wiring to the board by soldering.There have been various proposals in the past, but the insertion and fixing are difficult. They used methods such as press-fitting and using special jigs.

However, with the press-fitting method or the method using a jig, the reliability of holding the connection terminal (hereinafter referred to simply as the connection terminal) is not guaranteed until it is fixed by soldering after it is inserted into the board. There was a concern that it lacked stability and that work such as soldering was often forced to be interrupted.

In view of the above-mentioned points, the present invention provides elasticity to the insertion piece inserted into the hole in the board, and uses this elastic force to clamp the connection terminal in the hole, improving the reliability and stability of holding. It is something.

An embodiment of the present invention will be described below with reference to the drawings. In Figs. 1 to 3, 1 indicates a connecting terminal, and the electrical contact part 2 is made of a metal plate made of copper, brass, etc. bent into a U-shape. , rectangular contact plates 3 and 4 are positioned parallel to each other with an appropriate distance between them.

An elastic tongue piece 5 is connected to one end of the contact plate 3, and the tip of the tongue piece 5 is folded back and inserted between the contact plates 3 and 4. The other end of the contact plates 3 and 4 (elastic tongue piece 5
The legs 6 are elastically connected to each other at the opposite position.

An insertion piece 7 is provided protruding from the tip of the leg 6, and
Swing prevention pieces 8 bent outward in a substantially L-shape are connected to both upper sides of the insertion piece 7, respectively.

The insertion piece 7 is bent outward along its central axis into a dogleg-shaped cross section to provide sharp contact ends 7a on both sides, and also to reinforce its structure and prevent it from being damaged or curled inward or outward. , a chamfer 7a is provided at the tip so that it can be easily inserted into an opening 10 of a substrate 9, which will be described later. As shown in FIGS. 2 and 3, the pair of insertion pieces 7 are positioned with appropriate spacing between them. In addition, the anti-swing piece 8 is made as large as possible and bent into an L shape to increase its strength, and also prevents the entire connecting terminal 1 from swinging back and forth and from side to side when inserted into the board 9. Do it like this.

Next, the effect will be explained.

FIG. 4 shows a state in which the connection terminal 1 is attached to the board 9.

That is, an opening 10 is formed in the substrate 9, and a circuit 11 made of printed wiring or the like is disposed on the rear surface of the opening 10. The legs 6 are pressed from both sides and inserted into the opening 10 with the pair of insertion pieces 7 in close contact with each other.
When the force pressing the leg 6 is released, the insertion pieces 7, 7 spread to the left and right due to the elastic restoring force of the leg 6, and the opening 1 is opened.
It is locked to 0.

At this time, since the anti-swing piece 8 is in contact with the upper surface of the substrate 9, the connection terminal 1 is stably held without swinging.

Finally, solder 12 the insertion piece 7 and the circuit 11.
By doing so, the connection work between the board 9 and the connection terminal 1 is completed.

The above has described an example of a female type connecting terminal in which the electrical contact part 2 is composed of the contact pieces 3, 4 and the elastic tongue piece 5, but the elastic tongue piece 5 is omitted and the contact pieces 3, 4 are overlapped to form a flat plate. If it is formed into a shape, it can be used as a male type connection terminal.

Since the present invention is constructed as described above,
The pair of insertion pieces have a tendency to expand in the hole of the printed circuit board and come into pressure contact with the edge of the hole, and at this time, the sharp contact ends on both sides bite into the inner peripheral surface of the hole of the printed circuit board to make a good condition. The anti-swing piece is bent outward in a roughly L shape, so it resists forces applied in the front, back, left and right directions, stabilizes the standing posture, and prevents rotation while making contact. ensure retention,
This will make subsequent work easier.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a side view, FIG. 3 is a bottom view, and FIG. 4 is a partially sectional side view showing the state of use. DESCRIPTION OF SYMBOLS 1... Connection terminal for board fixation, 2... Electrical contact part, 6... Leg part, 7... Insertion piece, 8... Rocking prevention piece.

Claims (1)

[Scope of utility model registration request] An electrical contact portion is constructed by contact plates made by bending metal plates and facing each other, each of the facing contact plates is provided with a leg, and an insertion piece is provided at the tip of each leg so as to face each other. A rocking prevention piece is provided on the upper part of the insertion piece and is bent outward in a substantially L-shape and extends from both sides of each leg, and the insertion piece is bent outward along the central axis. A connection terminal for fixing a board, characterized in that sharp contact ends are formed on both sides of the connection terminal, and opposing insertion pieces are brought close to each other against the elasticity of the legs and inserted into an opening in the board.