JPS5941560Y2 - electromagnetic relay - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an insulation structure between a relay body and a metal case in a metal-sealed electromagnetic relay.

Fig. 1 shows the structure of a conventional relay of this type, in which a relay main body 2 is attached to a base 1 made of an insulating material.
After covering the relay body 2 with a sheet-shaped insulating spacer 3,
A metal case 4 is arranged to cover the base 1.

5 is a terminal. In this way, insulation between the relay main body 2 and the metal case 4 is ensured by the insulating spacer 3, which requires the insulating spacer 3 and requires time and effort to insert the insulating spacer 3 during assembly. .

The present invention was made with the aim of eliminating such problems.1. An insulating piece is extended from the side edge of the base made of an insulating material, and the relay body mounted on the base is covered with the insulating piece, and then the metal case is covered,
Eliminates the need for separate insulating spacers, reducing component count and
Furthermore, the present invention provides an electromagnetic 1) relay with a structure that is easy to assemble.

Fig. 2 shows an embodiment of the present invention, in which a sheet-shaped insulating piece 7 is integrally extended from the side edge 6 of a base 1 made of a synthetic resin product, and this is connected as shown by the chain line. It is bent and placed over the relay main body 2, and the metal case 4 is placed on the base 1.

A thin portion 8 is formed on the insulating piece 7 to facilitate bending.

In the example shown in the figure, the upper surface of the relay main body 2 and both left and right surfaces are covered with the insulating pieces 7. If an insulating piece is further extended, it can be bent to cover the front and rear surfaces of the relay main body 2.

Figure 3 shows an example in which insulating pieces 7.7 are extended on both side edges 6, 6 of the base 1 and bent inward. 8
One is provided for each.

Note that when extending the insulating piece 7, it is extended from the inside of the side edge 6 to form a stepped portion 9 according to the Yu H rule, and the metal case 4 is attached to this stepped portion 9. 4 can be easily covered.

Fig. 4 shows an example in which insulating pieces 7 are provided on both sides, and the thickness becomes smaller toward the tip. When the relay body 2 is covered by being bent inward, both insulating pieces 7 overlap The insulation thickness of each part is made almost equal.

This is an improvement over the fact that in the case of Figure 3, the overlapping parts are twice the thickness, which is wasteful, and the overall height increases accordingly, in order to save on materials and downsize. .

As mentioned above, the present invention extends an insulating piece to the side edge of the base, and uses this insulating piece to insulate between the relay body and the metal case. Because they can be formed at the same time, the number of parts can be reduced without the need for separate parts such as insulating spacers, and the assembly process is simple and easy, as all that is required is to cover the base with the metal case. It has the following advantages.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of a conventional example, Fig. 2 is a side sectional view of one embodiment of the present invention, Fig. 3 is a side sectional view of another embodiment, and Fig. 4 is a side sectional view of yet another embodiment. 1 is a cross-sectional view. 1 is a base, 2 is a relay main body, 4 is a metal case, 6 is a side edge, and 7 is an insulating piece.

Claims (3)

[Scope of utility model registration request] (1) In an electromagnetic relay in which a metal case that shields the relay body is attached to a base made of an insulating material with a relay body attached to the upper part, an insulating piece that insulates the relay body from the metal case is attached from the side edge of the base. An electromagnetic relay that extends and covers the upper part of the relay body with the insulating piece. (2) The electromagnetic relay according to claim 1, which is a utility model, and comprises insulating pieces on both sides of the base. (3) The electromagnetic relay according to claim 1, which is a registered utility model, wherein insulating pieces are provided on both sides of the base, and the thickness of each insulating piece becomes smaller toward the tip.