JPH0341395Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electromagnetic relay whose main body is covered with covers from above and below.

Conventionally, in this type of electromagnetic relay, the upper and lower covers were joined with terminals protruding from both sides of the main body in between, and the joined surfaces were fixed with adhesive, or the joined parts of both covers were engaged with concave and convex parts. After that, it was sealed and fixed with adhesive.

However, with the above structure, there is a problem that the main body may wobble within the cover or the two covers may be misaligned.Furthermore, since it is assembled only by fixing it with adhesive, there are two types: a completely sealed type and a simple sealed type. There was a drawback that the above cover could not be shared between the two cases.

The present invention was created in view of these drawbacks.
To provide an electromagnetic relay whose main body and upper and lower covers can be securely fixed by fitting, and whose parts can be shared between a completely sealed type and a simple sealed type.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings, which are examples of the present invention.

In the drawings, a main body 1 includes a contact portion and an electromagnet portion, and dual in-line terminals 2 protrude from two opposing sides. A step part 3 for fixing the upper cover is provided on two sides of the main body 1 from which the terminal 2 protrudes, a step part 4 for fixing the lower cover is provided on the other two sides, and a chamfer is provided at the lower end of the side surface. 5 is formed.

The upper cover 6 is fitted from above the main body 1, and the lower end portions of the two sides corresponding to the terminal protruding surfaces of the main body 1 are
It has a claw part 7 which is inserted between the terminals 2 and fits into the upper cover fixing step part 3, and a thin part 8 is provided vertically at the lower end part of the other two sides.

The lower cover 9 is fitted from below to the main body 1, and has claws 10 fitted to the lower cover fixing steps 4 at the upper ends of two side surfaces corresponding to the two side surfaces other than the terminal protruding surface of the main body 1. , thin-walled portions 11 are provided at the upper ends of the other two sides.
is provided in a protruding manner, and this thin wall portion 11 is adapted to fit on the outside of the claw portion 7 of the upper cover 6. When the claw portion 10 is fitted from below to the main body 1, it comes into sliding contact with the chamfer 5 of the main body 1 and is deflected outward.

When the upper cover 6 and the lower cover 9 are fitted to the main body 1, the upper cover 6 and the lower cover 9 are respectively fixed to the main body 1, and the three are reliably integrated without being displaced. In the integrated state, a concave groove 12 is formed around the entire circumference of the joint between the two covers 6 and 9 by the outer peripheral surface of the claw portion 7 and the thin wall portion 8 of the upper cover 6. .

Therefore, when using this electromagnetic relay as a simple sealed type, it is sufficient to use it with the upper and lower covers 6 and 9 fitted to the main body 1, and when using it as a completely sealed type, the upper and lower covers After fitting the covers 6 and 9, adhesive (not shown) may be applied to the groove 12 to seal the joint between the upper and lower covers 6 and 6.

In addition, when the electromagnetic relay according to the present invention is used as a simple sealed type and is attached to the printed circuit board 13 (see Fig. 2), the flux when soldering the terminal 2 is inside the covers 6 and 9 along the terminal 2. However, if the thin wall portion 11 of the lower cover 9 is configured to cover the outside of the claw portion 7 of the upper cover 6 as in the above embodiment, the creepage distance is increased and the intrusion of flux can be prevented as much as possible.

As is clear from the above explanation, according to the present invention, the upper and lower covers are assembled by fitting and fixing them to the main body, so that the three parts, the upper and lower covers and the main body, are reliably integrated without misalignment. Ru. Therefore, the upper and lower covers and the main body can be used in either a completely sealed type or a simple sealed type. Moreover, even when applying the adhesive, since the upper and lower covers are securely fixed, the efficiency of the application work can be improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an electromagnetic relay according to the present invention;
FIG. 2 is a longitudinal sectional view thereof, FIG. 3 is a partially sectional side view, and FIG. 4 is an exploded perspective view. DESCRIPTION OF SYMBOLS 1... Main body, 2... Terminal, 3... Step part for fixing upper cover, 4... Step part for fixing lower cover, 6... Upper cover, 7... Claw part, 9... Lower cover, 10... ...claw portion, 12...concave groove.

Claims (1)

[Scope of utility model registration request] In an electromagnetic relay comprising a main body having a contact part and an electromagnet part and dual in-line terminals protruding from both sides, an upper cover and a lower cover are integrally joined from the top and bottom of the main body with the terminals of the main body in between. The step part for fixing the upper cover is on two opposite sides of the
A step for fixing the lower cover is provided on each side, a claw portion is provided at the lower end of the upper cover to fit into the step for fixing the upper cover, and a step for fixing the lower cover is provided at the upper end of the lower cover. An electromagnetic relay characterized in that a mating claw portion is provided, and in a state where the two covers are joined and integrated, a recessed groove is formed around the entire circumference of the joining portion of both the covers.