JPH0515282U - Electromagnetic relay - Google Patents

Abstract

(57) [Abstract] [Purpose] To make it possible to easily provide an insulation distance between input and output and to provide a hinge pressing means without increasing the number of parts. [Structure] Insulator made of thermoplastic resin that supports the contact 5
An elastic piece 6a extending from a part of 6 serves as a hinge pressing means. Therefore, since the elastic piece 6a, which is the hinge pressing means, is not a metal material but an insulator, the insulation distance between the input and output of the coil 2 and the contact portion 5 does not become short, and it is easy to ensure that much, and Since the elastic piece 6a is formed by extending a part of the insulator 6 that supports the contact portion 5, it is not necessary to use a new member, and the number of parts can be reduced accordingly.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electromagnetic relay.

[0002]

[Prior Art]

 As a conventional electromagnetic relay, there is one shown in FIG.

This device has an iron core 11, a coil 12, a yoke 13, an armature 14, a hinge pressing means 15, a contact portion 16 and an insulator 17, and is configured as follows.

The iron core 11 is formed in a rod shape. The coil 12 is wound around the iron core 11 via the coil frame 12a. The yoke 13 is formed in an L shape by one piece 13a and the other piece 13b, one piece 13a is fixed to one end of the iron core 11, and the other piece 13b is arranged side by side outside the coil 12. . The armature 14 is formed into an approximately L shape by one piece 14a and the other piece 14b bent at an obtuse angle, and the one piece 14a is sucked and released to the iron core 11. The hinge pressing means 15 is a leaf spring made of a metal material, and one end portion 15a thereof is fixed to the other piece 13b of the yoke 13 and the other end portion 15b spring-biases the bent outer side of the armature 14. With such an arrangement, the armature 14 is hinge-supported on the inner side of the bend at the end of the other piece 13b of the yoke 13. The contact point portion 16 is formed by providing a contact point 16a opposed to the tip end portion of two contact point springs 16b, respectively, and an insulator 17 is formed by fixing and supporting the base portion of the contact point spring 16b. The contact portion 16 is driven and opened / closed by the other piece 14b of the armature 14 hinge-supported at the end of the other piece 13b of the yoke 13, and the hinge pressing means 15 is connected to the coil 12 Will be located between the other piece 13b of the yokes 13 arranged side by side on the outer side of and the contact portion 16.

[0005]

[Problems to be solved by the device]

 In the above-mentioned conventional electromagnetic relay, the hinge pressing means 15 is formed as a new member by a leaf spring made of a metal material, and at the same time as the other piece 13b of the yokes 13 juxtaposed outside the coil 12. Since the hinge holding means 15 made of a metal material is located between the contact portion 16, that is, between the input and output of the coil 12 and the contact portion 16, the insulation distance between the input and the output is equal to that of the hinge holding means 15. It is difficult to secure just that much, and a new member is required as the hinge pressing means 15, and the number of parts is increasing accordingly.

The present invention has been made in view of the above circumstances, and an object thereof is to easily provide an insulation distance between input and output and to provide a hinge pressing means without increasing the number of parts. It is to provide an electromagnetic relay that can.

[0007]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, an electromagnetic relay of the present invention includes an iron core, a coil wound around the iron core, a yoke fixed to the iron core, and an armature sucked and released to the iron core. In an electromagnetic relay having a hinge pressing means for hinge-supporting the armature on a yoke, and an insulator supporting a contact portion that is opened / closed in response to the armature, the hinge pressing means comprises: The elastic piece is formed by extending a part thereof.

[0008]

[Action]

 According to the electromagnetic relay of the present invention, since the elastic piece that is the hinge pressing means is an insulator instead of a metal material, the insulation distance between the input and output of the coil and the contact portion may be shortened as in the conventional example. The elastic piece is formed by extending a part of the insulator that supports the contact part, so there is no need to use a new member as in the conventional example, and the part is just that. The number of points can be reduced.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to FIG.

Reference numeral 1 denotes an iron core, which is made of a magnetic material such as electromagnetic soft iron and has a substantially rod shape. Reference numeral 2 denotes a coil, which is wound around the iron core 1 via a coil frame 2a, and both ends thereof are connected to a coil terminal 2b provided on the coil frame 2a.

Reference numeral 3 is a yoke, which is made of a magnetic material such as electromagnetic soft iron into an L-shape with one piece 3a and the other piece 3b. One piece 3a is fixed to one end of the iron core 1 and the other piece 3b. Are arranged side by side on the outside of coil 2.

Reference numeral 4 denotes an armature, which is made of a magnetic material such as electromagnetic soft iron and is formed into an approximately L shape by the one piece 4a and the other piece 4b bent at an obtuse angle, and the one piece 4a is attracted to the iron core 1. Be released.

Reference numeral 5 denotes a contact point portion, which is formed by providing contact points 5a facing the tip portions of two contact springs 5b arranged in parallel.

Reference numeral 6 denotes an insulator, which is made of a thermoplastic resin and is integrally molded with the contact portion 5 so as to fix and support the base portion of the contact spring 5b. Then, a thin elastic piece 6a is obliquely extended from a part of the insulator 6 near the base of the contact spring 5b, and in this elastic piece 6a, the insulator 6 is made of a thermoplastic resin. Therefore, it is elastic by being thinly extended. In addition, the insulator 6 has a thick-walled fitting convex piece 6b formed on the same side as the elastic piece 6a, and the fitting convex piece 6b is made of an insulating material fixed through the coil terminal 2b. When fitted in the fitting concave piece 6d provided in 6c, the elastic piece 6a urges the bending outer side of the armature 4 by its elasticity, so that the armature 4 bends inside the armature 3 of the yoke 3. The other end 3b is hinge-supported. That is, this elastic piece 6a serves as a hinge pressing means. Then, when the armature 4 is sucked and released to the iron core 1, the contact piece 5 is driven by the other piece 4b to open and close.

In such an electromagnetic relay, since the elastic piece 6a which is the hinge pressing means is an insulator instead of a metal material, the insulation distance between the input and output of the coil 2 and the contact portion 5 is the same as that of the conventional example. The elastic piece 6a is formed by extending a part of the insulator 6 made of a thermoplastic resin that supports the contact portion 5, so that the elastic piece 6a can be easily secured. It is not necessary to use a new member, and the number of parts can be reduced accordingly.

In the present embodiment, the insulator 6 supporting the contact portion 5 is a separate member so as to be fitted to the base 6c, but the insulator 6 serves as the base 6c. The elastic piece 6a may be formed as one member by extending from a portion corresponding to the base 6c.

[0017]

[Effect of the device]

 In the electromagnetic relay of the present invention, since the elastic piece that is the hinge pressing means is an insulator rather than a metal material, the insulation distance between the input and output of the coil and the contact part is shortened as in the conventional example. It is easy to secure that much, and since the elastic piece is formed by extending a part of the insulator that supports the contact part, there is no need to use a new member unlike the conventional example. The number of parts can be reduced accordingly.

[Brief description of drawings]

FIG. 1 is a partial sectional front view showing an embodiment of the present invention.

FIG. 2 is a partial cross-sectional front view showing a conventional example.

[Explanation of symbols]

 1 Iron core 2 Coil 3 Yoke 4 Armature 5 Contact part 6 Insulator 6a Elastic piece (Hinge holding means)

Claims (1)

[Scope of utility model registration request] 1. An iron core, a coil wound around the iron core, a yoke fixed to the iron core, an armature sucked and released to the iron core, and a hinge for hinge-supporting the armature on the yoke. Holding means,
In an electromagnetic relay having an insulator that supports a contact portion that opens and closes in response to an armature, the hinge pressing means is an elastic piece that extends a part of the insulator. relay.