Static contact and contactor

Abstract

The static contact comprises a static contact and a body part, one end of the body part is provided with a guide part which extends forwards, the other end of the body part is provided with a hook-back part which is formed by lifting and folding back at the tail end of the guide part, and the static contact is connected to one end of the hook-back part. According to the utility model, through the design of the static contact, a more stable contact state can be formed when the moving contact and the static contact are contacted, and through prolonging parts with the same current direction and reducing parts with opposite current directions, electric repulsive force is effectively reduced, and electric suction force is increased, so that the contact pressure of the contacts is improved, the contact stability is ensured, and the service life of the contacts is prolonged. And in the on-off process of the static contact, the special structure of the static contact generates a strong electromagnetic field around the contact, so that the electric arc can be blown away more effectively, the combustion time of the electric arc is shortened, the loss of a contact material is reduced, and the service life of the contactor is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a static contact and a contactor. Background Art

[0002] In electrical control systems, contactors are key switching components, and their performance directly affects the stability and reliability of the entire system. The traditional contactor static contact design mainly includes a rotary ("U" type) structure and an extended ("Z" type) structure. The static contact of the rotary ("U" type) structure has its front end lifted and folded back, resulting in a large electric repulsion between the moving and static contacts due to the opposite current directions when current flows through. On the other hand, although the static contact of the extended ("Z" type) structure solves the repulsion problem caused by the opposite current directions to a certain extent, because its front end is lifted and extended forward, so that the current directions of the moving and static contacts are the same in most areas, there is a problem that the electromagnetic field around the contact circuit is weak, and the arc blowing ability of the electromagnetic field during the on-off process of the contact is low, resulting in a long arc burning time and more contact material loss, thereby reducing the life of the contactor. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a static contact and a contactor with high contact stability, strong arc extinguishing ability and long service life.

[0004] In the first aspect, the utility model provides a static contact, including a static contact point and a main body portion, one end of the main body portion has a guide portion extending forward, the other end of the main body portion has a hook portion raised and folded back at the end of the guide portion, and the static contact point is connected to one end of the hook portion.

[0005] Compared with the prior art, the beneficial effects of the above structure are: the design of the static contact enables the dynamic and static contacts to form a more stable contact state when in contact, and by extending the part with the same current direction and reducing the part with the opposite current direction, the electric repulsion is effectively reduced and the electric attraction is increased, thereby improving the contact pressure of the contact and ensuring the stability of the contact. During the switching process of the static contact, its special structure generates a strong electromagnetic field around the contact, which can more effectively blow away the arc and shorten the arc burning time, thereby reducing the loss of contact material and increasing the service life of the contactor.

[0006] The utility model is further configured that the static contact is a J-shaped structure. The static contact of the J-shaped structure is designed by an integrated molding, and the static contact and the main body are tightly combined to form a compact and efficient whole. The static contact of the J-shaped structure is designed by an integrated molding, and the static contact and the main body are tightly combined to form a compact and efficient whole.

[0007] The utility model is further arranged that an opening for fixed installation is formed on the guide part. Through the fixed installation opening on the guide part, the static contact can be more firmly connected with the relevant parts.

[0008] In a second aspect, the utility model provides a contactor including the above-mentioned static contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the static contact structure of an embodiment of the utility model. DETAILED DESCRIPTION

[0010] like Figure 1 As shown, an embodiment of the utility model provides a static contact, including a static contact 1 and a main body 2, one end of the main body 2 has a guide portion 21 extending forward, the guide portion 21 extends in a direction opposite to and close to the moving contact, the other end of the main body 2 has a hook portion 22 formed by lifting and folding back at the end of the guide portion 21, the static contact 1 is connected to the top of the hook portion 22, so that when the static contact is in contact with the moving contact, the current direction between the two is the same in most areas, and the direction is opposite only in a short area where the hook portion 22 is in contact with the moving contact, an opening 211 for fixed installation is formed on the guide portion 21, and the overall shape of the static contact is a J-shaped structure.

[0011] The stationary contact according to the above-mentioned construction can be used in any contactor.

[0012] Of course, in addition to the above-mentioned embodiments, the present invention may also have many other embodiments. Without departing from the essential technical content of the present invention, technicians familiar with the field may make various corresponding changes and deformations according to the present invention, and these changes or deformations are equivalent to the technical solutions in this patent. These corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A stationary contact, comprising a stationary contact point and a body, characterized in that: One end of the main body has a guide portion extending forward, and the other end of the main body has a hook portion formed by lifting and folding back at the end of the guide portion, and the static contact is connected to one end of the hook portion.

2. The stationary contact according to claim 1, characterized in that: The static contact is a J-shaped structure.

3. The stationary contact according to claim 1, characterized in that: An opening for fixed installation is formed on the guide portion.

4. A contactor, characterized in that: Comprising a stationary contact according to any one of claims 1-3.

Images