CN-122000246-A - Contact assembly and relay

Abstract

The present application relates to a contact assembly and a relay. The contact assembly comprises a static contact unit and a separator, wherein the static contact unit comprises a static contact and a static magnetizer, the static contact is provided with a static contact, the static magnetizer is connected to the static contact, the movable contact unit comprises a movable contact and a movable magnetizer, the movable contact is provided with a movable contact, the movable contact can be in contact conduction with the static contact, the movable magnetizer is connected to the movable contact, the movable magnetizer and the static magnetizer are oppositely arranged, the separator is arranged between the movable magnetizer and the static magnetizer, and the separator is configured to be used for blocking the movable magnetizer and the static magnetizer from being in contact. According to the application, the spacing between the movable magnetizer and the static magnetizer is realized by arranging the spacer, so that the spacing between the movable magnetizer and the static magnetizer is limited, the buffer is provided for the deformation of the movable contact, the excessive deformation is avoided, meanwhile, the stability of a magnetic gap and a magnetic circuit is ensured, the conduction reliability of the magnetic attraction and the contact is maintained, and the improvement of the working reliability and the service life of the relay are facilitated.

Inventors

• DAI WENGUANG
• LIAO GUOJIN

Assignees

• 厦门宏发电力电器有限公司

Dates

Publication Date

20260508

Application Date

20260331

Claims (19)

1. 1. A contact assembly, the contact assembly comprising: the static contact unit comprises a static contact piece and a static magnetizer, wherein the static contact piece is provided with a static contact point, and the static magnetizer is connected with the static contact piece; the movable contact unit comprises a movable contact and a movable magnetizer, the movable contact is provided with a movable contact, the movable contact can be in contact conduction with the static contact, the movable magnetizer is connected to the movable contact, and the movable magnetizer and the static magnetizer are oppositely arranged; And the separator is arranged between the movable magnetizer and the static magnetizer and is used for blocking the contact between the movable magnetizer and the static magnetizer.
2. 2. The contact assembly of claim 1, wherein the spacer is made of an insulating material.
3. 3. The contact assembly of claim 1, wherein the spacer has a gap between the spacer and at least one of the static and moving magnetic conductors.
4. 4. The contact assembly of claim 1, wherein the spacer is configured to be secured between the moving magnetizer and the static magnetizer by a securing member; or the spacer is connected to at least one of the static magnetizer and the moving magnetizer.
5. 5. The contact assembly of any one of claims 1 to 4, wherein the stationary contact and the movable contact are disposed at intervals along a thickness direction of the contact assembly, and the spacer is disposed between the movable magnetizer and the stationary magnetizer along the thickness direction.
6. 6. The contact assembly of claim 5, wherein an orthographic projection of at least one of the static magnetic conductor and the dynamic magnetic conductor in the thickness direction falls within an orthographic projection range of the spacer in the thickness direction.
7. 7. The contact assembly of claim 5, wherein there is a first region of misalignment of an orthographic projection of the static magnetic conductor in the thickness direction with an orthographic projection of the spacer in the thickness direction, and a second region of misalignment of an orthographic projection of the moving magnetic conductor in the thickness direction with an orthographic projection of the spacer in the thickness direction, the first region partially or fully overlapping the second region.
8. 8. The contact assembly of claim 6 or 7, wherein the spacer is orthographic projected in the thickness direction in a solid shape or a perforated shape.
9. 9. The contact assembly of claim 1, wherein the stationary contact comprises a connection portion and an electrical lead-out portion, the electrical lead-out portion having the stationary contact, the connection portion being connected to the electrical lead-out portion, the stationary magnetizer being connected to the connection portion.
10. 10. The contact assembly of claim 9, wherein the connection portion is provided with a hollowed out groove; And/or the connecting part and the electric leading-out part are riveted through the static contact; And/or, the static magnetizer is riveted with the connecting part.
11. 11. The contact assembly of claim 9, wherein the static magnetic conductor is connected to the connecting portion, and a side of the connecting portion facing away from the static magnetic conductor is provided with a first fixing protrusion.
12. 12. The contact assembly of claim 9, wherein an end of the connecting portion remote from the electrical lead-out portion is provided with a second fixing protrusion.
13. 13. The contact assembly of claim 9, wherein the connection portion has a conductivity less than a conductivity of the electrical outlet portion; or the static magnetizer and the connecting part are made of the same material.
14. 14. The contact assembly of claim 1, wherein one end of the stationary contact is provided with the stationary contact and the stationary magnetizer is disposed between the other end of the stationary contact and the stationary contact.
15. 15. The contact assembly of claim 1, further comprising a tab body and a tab end, the tab body being connected to the movable contact, the tab end being connected to the tab body, the tab end being configured for electrical connection with an external circuit.
16. 16. The contact assembly of claim 15, wherein the movable contact is riveted to the lead tab by a plurality of rows of second protrusions spaced apart along a length of the movable contact.
17. 17. A relay comprising the contact assembly of any one of claims 1-16.
18. 18. The relay of claim 17, further comprising a housing and a fixture coupled to the housing, wherein the spacer of the contact assembly is coupled to the fixture.
19. 19. The relay of claim 18, wherein the stationary contact of the contact assembly is provided with a first fixing protrusion, and the housing is provided with a first fixing groove for mating with the first fixing protrusion; and/or the static contact piece of the contact assembly is provided with a second fixing protrusion, and the shell is provided with a second fixing groove matched with the second fixing protrusion.

Description

Contact assembly and relay Technical Field The application relates to the technical field of relays, in particular to a contact assembly and a relay. Background The relay is used as a common component for on-off control of a circuit and is widely applied to the fields of industrial control, intelligent home, automobile electronics and the like. In the related art, the relay is normally in a closed state when the static contact and the movable contact are contacted, is in an open state when the static contact and the movable contact are separated, and is attracted through the cooperation of the static magnetizer and the movable magnetizer, so that the stable contact between the static contact and the movable contact is ensured, and the stable conduction of a circuit is realized. However, when a short circuit fault occurs in the circuit and short circuit current is generated, the static magnetic conductor and the movable magnetic conductor can generate larger magnetic attraction force under the action of strong current, so that the static magnetic conductor and the movable magnetic conductor can attract each other. At this time, the magnetic attraction force can generate excessive traction and extrusion force on the movable contact connected with the movable magnetizer, so that the movable contact is easy to deform excessively, and the working reliability and the service life of the relay are reduced. Disclosure of Invention Based on this, it is necessary to provide a contact assembly and a relay for the problem that excessive deformation of the movable contact may occur. A contact assembly, the contact assembly comprising: the static contact unit comprises a static contact piece and a static magnetizer, wherein the static contact piece is provided with a static contact point, and the static magnetizer is connected with the static contact piece; the movable contact unit comprises a movable contact and a movable magnetizer, the movable contact is provided with a movable contact, the movable contact can be in contact conduction with the static contact, the movable magnetizer is connected to the movable contact, and the movable magnetizer and the static magnetizer are oppositely arranged; And the separator is arranged between the movable magnetizer and the static magnetizer and is used for blocking the contact between the movable magnetizer and the static magnetizer. In one embodiment, the spacer is made of an insulating material. In one embodiment, the spacer has a gap between the spacer and at least one of the static magnetizer and the dynamic magnetizer. In one embodiment, the spacer is configured to be secured between the moving magnetizer and the static magnetizer by a securing member; or the spacer is connected to at least one of the static magnetizer and the moving magnetizer. In one embodiment, the static contact and the movable contact are arranged at intervals along the thickness direction of the contact assembly, and the spacer is arranged between the movable magnetizer and the static magnetizer along the thickness direction. In one embodiment, an orthographic projection of at least one of the static magnetizer and the dynamic magnetizer in the thickness direction falls within an orthographic projection range of the spacer in the thickness direction. In one embodiment, a first area which is not overlapped with the orthographic projection of the static magnetizer along the thickness direction and the orthographic projection of the isolating piece along the thickness direction exists, a second area which is not overlapped with the orthographic projection of the movable magnetizer along the thickness direction and the isolating piece along the thickness direction exists, and the first area is partially or completely overlapped with the second area. In one embodiment, the spacer is orthographic projected in the thickness direction in a solid shape or a perforated shape. In one embodiment, the static contact comprises a connecting portion and an electric leading-out portion, the electric leading-out portion is provided with the static contact, the connecting portion is connected to the electric leading-out portion, and the static magnetizer is connected to the connecting portion. In one embodiment, the connecting portion is provided with a hollow groove; And/or the connecting part and the electric leading-out part are riveted through the static contact; And/or, the static magnetizer is riveted with the connecting part. In one embodiment, the static magnetizer is connected to the connecting portion, and a first fixing protrusion is arranged on one side, away from the static magnetizer, of the connecting portion. In one embodiment, a second fixing protrusion is provided at an end of the connection portion remote from the electric lead-out portion. In one embodiment, the electrical conductivity of the connection portion is less than the electrical conductivity of the electrical outlet portion. In one embodime