JPH04121640U - electromagnetic relay - Google Patents

Abstract

(57) [Summary] [Structure] The armature 1 is attracted to the iron core 3 in response to energization of the excitation coil 4. This armature 1 has
A spiral thin plate spring 2 is fixed to the back surface. Therefore, the armature 1 is applied with a force by the spring 2 in a direction opposite to the suction force, so that the armature 1 slowly comes into contact with the iron core 3. [Effect] Since the collision between the armature 1 and the iron core 5 is slowed down, the impact noise can be reduced.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to electromagnetic relays, and in particular to electromagnetic relays with improved structure of moving parts. .

0002

[Conventional technology]

Conventional electromagnetic relays have an excitation coil wound around an iron core, and a yoke attached to one end of the iron core. Magnetically and mechanically coupled. Moreover, the iron core is designed to handle the energization of the excitation coil. Armatures that are attracted in response are arranged opposite to each other. This armature is the iron core. The contact is turned on and off by contacting it.

0003

[Problem that the idea aims to solve]

The conventional electromagnetic relay described above operates the armature in response to energization of the excitation coil. is attracted and the armature comes into contact with the iron core. At this time, the armature is directly Since it hits the heart, it has the disadvantage of making a loud impact sound.

0004 The purpose of the present invention is to provide an electromagnetic relay that can reduce such impact noise. There are many things.

[0005]

[Means to solve the problem]

The electromagnetic relay of the present invention has an iron core around which an excitation coil is wound, and a magnet at one end of the iron core. a yoke that is mechanically connected to the yoke and is supported at the tip of the yoke and is energized; The armature contacts the iron core by being attracted in response to energization of the coil. a spiral wound fixed to the back side of the armature opposite the position where it abuts the iron core. It is constructed by having a thin plate spring in the shape of a cylindrical shape.

[0006]

【Example】

Next, embodiments of the present invention will be described with reference to the drawings.

[0007] FIG. 1 is a front view of an electromagnetic relay showing an embodiment of the present invention. As shown in Figure 1 , this embodiment includes an iron core 3 around which an excitation coil 4 is wound, and a magnetic and A mechanically connected yoke 5 and a hinge spring supported at the tip of the rising part of the yoke 5. The held armature 1 and the part that contacts the back surface of the armature 1 and the iron core 3 The spiral thin plate spring 2 is fixed to the spiral thin plate spring 2. During operation of such an electromagnetic relay, the excitation In response to the energization of the magnetic coil 4, the armature 1 is attracted to the iron core 3, but the armature The spiral thin plate spring 2 fixed to the mature 1 applies force in the opposite direction to the suction force. , the armature 1 slowly comes into contact with the iron core 3. In addition, this armature 1 The low operation does not affect the on/off characteristics.

[0008] FIG. 2 is a back view of the armature shown in FIG. 1. As shown in Figure 2, this example On the back side of the armature 1, a spiral thin plate spring 2 is installed in the iron core contact position 6. It's stuck. The elasticity of the spring 2 slows down the movement of the armature 1 and It weakens the sound of the shot.

[0009]

[Effect of the idea]

As explained above, the electromagnetic relay of the present invention responds to the energization of the excitation coil. When the armature comes into contact with the iron core, the repulsive force of the spiral thin plate spring Since the armature makes contact slowly with the It has the effect of being able to be made very small.

[Brief explanation of drawings]

FIG. 1 is a front view of an electromagnetic relay showing an embodiment of the present invention.

FIG. 2 is a back view of the armature shown in FIG. 1.

[Explanation of symbols]

1 Armature 2 Spiral thin plate spring 3 Iron core 4 Excitation coil 5 York 6 Core contact position

Claims (1)

[Scope of utility model registration request] 1. An iron core around which an excitation coil is wound, a yoke magnetically and mechanically coupled to one end of the iron core, and a yoke supported at the tip of the yoke and responsive to energization of the excitation coil. An electromagnetic relay comprising: an armature that comes into contact with the iron core when it is attracted; and a spiral thin plate spring fixed to the back surface of the armature opposite to the position where it comes into contact with the iron core.