JPS5834667Y2 - Coil connection structure of electromagnetic switch - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a connection structure between a coil winding end and a coil terminal plate of an electromagnetic switch that can connect an electromagnet block and a contact block with one touch.

Conventionally, terminal springs made of conductive spring plates have been used to connect coil terminals, but it is difficult to prevent the terminal springs from falling off or rattling, and terminal springs with a common shape on the left and right sides of the coil frame are difficult to prevent. The problem was that it could not be used.

FIG. 1 shows an example of a conventional coil terminal spring, in which the screw is screwed by the engagement between the support piece 24 and the recess 25 of the coil frame, the fitper, and the engagement of Li2 with the protrusion of the coil frame. ``The terminal spring is semi-fixed to the chair, but when it is not elastically attached to the end plate 27, it can be pulled out in the direction of arrow a ('easy,
In addition, there is a missing EL, 1, in which the left and right sides do not have the same shape.

Although the present invention aims to solve the above problems,
It is.

The structure of the present invention σ will be described in detail with reference to FIGS. 2 and 3 below. The electromagnetic switch is constructed by combining a case body 1 with a cover 2 which houses an electromagnet block A and a contact block B attached to the main body 1. In the case, recesses 4 with openings (-) are provided on both sides of the electromagnet σ coil frame on the top and side surfaces, respectively, and grooves 5 are formed on one end of the left and right walls of each recess 4, and a groove 5 is formed at one end of each recess 4. The horizontal piece 6a of the conductive spring plate 6 bent in the shape of a letter is formed into a convex shape 1·i with a gentle slope, and the tongue piece 7 for winding soldering is bent upward to form a horizontal piece. Formed narrower than 6a f
' - is formed by folding the vertical piece 6b inward in a substantially V-shape.
The coil terminal springs are inserted into each of the recesses 4 through the side openings with the vertical pieces 6b at the back, and both side edges of the horizontal pieces 6a are elastically clamped by the left and right grooves 5, so that the springs are inserted through the cover 2. Insert the inner ends of the two coil terminal plates 8 into the recess 4 between the upper surfaces 1''.
The coil terminal spring is inserted into the coil terminal spring so as to come into elastic contact with the ■-shaped folded portion of the coil terminal spring.

In the figure, 9 is an H-shaped iron core, 10 is an armature, and the armature 10 is attracted by the excitation of the coil 11, and the movable frame 1
2 against the return spring 13, and the contact spring 14
The contact 16 of the movable contactor 15 is brought into contact with the fixed contact 18 of the fixed terminal plate 17 through the terminal.

19 is a regular plate, 20 is a test push button integrated with the movable frame 12, and 2] is a winding end insertion hole.

The present invention is constructed as described above, with openings provided on the top and side surfaces of the recess 4, and a groove 5 formed at the lower end of the main right wall surface to allow the coil terminal spring inserted through the side opening to be inserted. Since the chevron-shaped convex curved portion of the horizontal piece 6a is elastically clamped, the terminal spring does not rattle or wobble even when the coil terminal plate 8 is inserted and elastically contacted from above.
When the terminal plate 8 comes into elastic contact with the V-shaped folded part, a force is applied to the terminal spring in the pushing direction, causing the L-shaped part of the terminal spring to press against the bottom and back surface of the recess 4. It has the advantage of being pressed by the body and stabilizing its posture.

Further, since all the terminal springs are bent or bent at right angles to the longitudinal direction, they can be commonly applied to the recesses 4 on both sides of the coil frame 3, which has the advantage of reducing the number of parts.

As shown in FIG. 3, if a notch 22 is provided at the top of the chevron-shaped convex curved portion of the horizontal piece 6a of the terminal spring to form an edge portion 23, the edge portion 23 will engage with the lower surface of the groove 5. This can prevent the terminal spring from coming out and falling due to vibration during assembly.

[Brief explanation of the drawing]

Fig. 1 shows a conventional example, in which a is a side view, b is a perspective view of the main part, and Fig. 2 is an embodiment of the present invention, in which a is a side sectional view and b is a partially sectional view. The front view shown, C is a sectional view of the main part, and FIG. 3 is a perspective view of the main part same as above. A is the electromagnet block, B is the contact block, 1 is the case body, 2 is the cover, 3 is the coil frame, 4 is the recess, 5 is the groove,
6 is a conductive spring plate, 6a is a horizontal piece, 6b is a vertical piece, 7 is a tongue piece, and 8 is a coil terminal plate.

Claims (1)

[Scope of utility model registration request] In an electromagnetic switch consisting of a case body housing an electromagnet block and a cover fitted with a contact block, recesses are provided on both sides of the electromagnet coil frame with openings on the top and side surfaces respectively, and the left and right walls of each recess are A concave groove is formed at the lower end, and the horizontal piece of the conductive spring plate is bent into an abbreviated shape, and the horizontal piece is bent into a convex mountain shape with a gentle slope. A coil terminal spring, which is made by folding a vertical piece narrower than the horizontal piece inward in a roughly V shape, is inserted into each of the recesses through the side opening with the vertical piece at the back, and then the horizontal piece The edges of both sides are elastically clamped by the left and right recessed grooves, and the inner ends of the two coil terminal plates inserted through the cover are inserted into the recess through the opening on the top surface, and the coil terminal spring is folded back into the ■ shape. A coil connection structure for an electromagnetic switch that is in elastic contact with the part.