Relay static contact

Abstract

The relay static contact piece comprises a body, the body is provided with a mounting hole for assembling a screw rod, the front surface and / or the back surface of the body are / is provided with a plurality of clamping points, the clamping points are distributed around the mounting hole, and one side of each clamping point protrudes in the mounting hole. According to the principle of the utility model, the static contact piece is provided with the clamping point, the clamping point does not affect the function of the static contact piece, and the screw rod and the static contact piece can be temporarily fixed after the screw rod is inserted into the mounting hole, thereby facilitating the subsequent assembly of the housing.

Description

TECHNICAL FIELD

[0001] The utility model relates to relay technical field especially a relay static contact piece. BACKGROUND

[0002] The relay generally includes the plastic head, the shell that cooperates with the plastic head, the iron core, the coil, the static contact head subassembly and the dynamic contact head subassembly. Such as the patent publication number CN208240582U a kind of relay static contact head subassembly, including iron screw rod and copper gasket, the surface of the iron screw rod is equipped with copper plating, iron screw rod includes threaded section and light pole section, one end of light pole section is connected with threaded section, other end is welded with copper gasket. When relay assembly, it needs to install screw rod, static contact piece, dynamic contact piece and spring on plastic head, finally, it is loaded into shell and is tightly fitted with plastic head. Before being loaded into shell, static contact piece subassembly and dynamic contact piece subassembly are placed on mould, but static contact piece and screw rod have not completed tight fitting, when dynamic contact piece subassembly and static contact piece subassembly are loaded into shell together, under the spring elastic force of dynamic contact piece subassembly, static contact piece is easily bounced up, resulting in that static contact piece cannot be accurately assembled, and certain assembly difficulty is brought. SUMMARY

[0003] The utility model to solve the technical problem is a kind of relay static contact piece, solve the problem that static contact piece and screw rod are easily separated when assembly.

[0004] To solve the above technical problems, the technical scheme of the utility model is as follows: a kind of relay static contact piece, including body, the installation hole for screw rod assembly is equipped on the body, the front and / or back of the body is equipped with a plurality of clamping points, the clamping point is distributed around installation hole, one side of the clamping point is projected in installation hole. The utility model principle: set up clamping point on static contact piece, clamping point not only does not affect the function of static contact piece, and when screw rod is inserted into installation hole, it can temporarily fix screw rod and static contact piece, facilitate subsequent assembly.

[0005] As an improvement, the clamping point is the convex of spherical cap shape arranged on the front and / or back of the body.

[0006] As an improvement, the clamping point is the convex caused by the deformation of the inner wall of installation hole arranged in the groove on the front and / or back of the body.

[0007] As an improvement, the installation hole is a round hole.

[0008] As an improvement, the front and / or back of the body is equipped with three clamping points that are uniformly distributed in circumference.

[0009] As an improvement, one side of the body is equipped with arc-shaped groove.

[0010] The utility model compared with prior art brings the beneficial effects of:

[0011] The clamping points are arranged on the static contact piece, and the clamping points not only do not affect the function of the static contact piece, but also can temporarily fix the screw rod and the static contact piece after the screw rod is inserted into the mounting hole, thereby facilitating subsequent assembly. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a schematic view of the static contact piece assembly and the moving contact piece assembly.

[0013] Figure 2 It is a schematic view of the static contact piece. DETAILED DESCRIPTION

[0014] The utility model will be further described below in combination with the drawings of the specification.

[0015] As shown in Figure 1 A static contact piece of a relay, the static contact piece 11 cooperates with a screw rod 12 to form a static contact piece assembly 1, two groups of static contact piece assemblies 1 are arranged in the relay, and the two groups of static contact piece assemblies 1 are located on the two sides of a moving contact piece assembly 2.

[0016] As shown in Figure 2 The static contact piece 11 comprises a body 110, the body 110 is a copper sheet, and the body 110 is electrically connected with the screw rod 12; the body 110 is provided with a mounting hole 111 for assembling the screw rod 12, the mounting hole 111 is a round hole; one side of the body 110 is provided with an arc-shaped groove 112, the arc-shaped grooves 112 of the two static contact pieces 11 are oppositely arranged, and a space formed between the two arc-shaped grooves 112 accommodates a pushing part of the moving contact piece assembly 2; the front surface and / or the back surface of the body 110 is provided with three clamping points 113 which are uniformly distributed in a circle, one side of the clamping point 113 protrudes in the mounting hole; the clamping point 113 is a spherical cap-shaped protrusion arranged on the front surface and / or the back surface of the body, the protrusion is integrally formed with the body, or the clamping point 113 is a protrusion caused by the deformation of the inner wall of the mounting hole due to the recess arranged on the front surface and / or the back surface of the body, and the protrusion is formed by later stamping processing; one side of the clamping point 113 protruding is in the shape of a circular arc, the friction is small, the difficulty of screw rod into the mounting hole is reduced, and the screw rod can be prevented from being separated from the constraint of the mounting hole to a certain extent.

[0017] The utility model principle: the clamping point is arranged on the static contact piece, and the clamping point not only does not affect the function of the static contact piece, but also can temporarily fix the screw rod and the static contact piece after the screw rod is inserted into the mounting hole, thereby facilitating subsequent assembly.

Claims

1. A relay fixed contact comprising a body, the body having a mounting hole for fitting a screw rod, characterized in that: The front and / or back of the body is provided with several clamping points, which are distributed around the mounting hole, and one side of the clamping points protrudes into the mounting hole.

2. The relay fixed contact according to claim 1, wherein: The clamping points are spherical cap-shaped protrusions provided on the front and / or back of the body.

3. The relay fixed contact according to claim 1, wherein: The clamping points are protrusions caused by the deformation of the inner wall of the mounting hole due to the grooves provided on the front and / or back of the body.

4. The relay fixed contact according to claim 1, wherein: The mounting hole is a circular hole.

5. The relay fixed contact according to claim 1, wherein: The front and / or back of the body is provided with three clamping points uniformly distributed in the circumference.

6. The relay fixed contact according to claim 1, wherein: One side of the body is provided with an arc-shaped groove.

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