Relay

Patent metadata

Field	Value
Publication number	US-2025095940-A1
Application number	US-202418884727-A
Country	US
Kind code	A1
Filing date	Sep 13, 2024
Priority date	Sep 14, 2023
Publication date	Mar 20, 2025
Grant date	—

Abstract

A relay includes a movable contact assembly comprising a movable contact piece; a push rod assembly configured to push the movable contact assembly to move, to make the movable contact piece contact with or separate from a static contact leading-out terminal; a limiting component connected to the movable contact assembly and the push rod assembly, and configured to restrict the movable contact assembly from rotating around an axis of the push rod assembly relative to the push rod assembly; and an elastic assembly configured to provide a contact pressure.

First claim

What is claimed is:

1 . A relay, comprising:
a movable contact assembly comprising a movable contact piece;
a push rod assembly configured to push the movable contact assembly to move, to make the movable contact piece contact with or separate from a static contact leading-out terminal;
a limiting component connected to the movable contact assembly and the push rod assembly, and configured to restrict the movable contact assembly from rotating around an axis of the push rod assembly relative to the push rod assembly; and
an elastic assembly configured to provide a contact pressure.

2 . The relay according to claim 1 , wherein the limiting component can be deformed to adapt to over-travel.

3 . The relay according to claim 1 , wherein the elastic assembly is a first elastic piece; the first elastic piece connected to one of the push rod assembly and the movable contact assembly, and abuts against another one of the push rod assembly and the movable contact assembly.

4 . The relay according to claim 3 , wherein the first elastic piece and the movable contact assembly together form an accommodation chamber, the limiting component is disposed in the accommodation chamber.

5 . The relay according to claim 3 , wherein the relay further comprises a pair of static contact leading-out terminals, both ends of the movable contact piece along a first direction are configured to contact with or separate from the pair of static contact leading-out terminals respectively; wherein the first direction is an arrangement direction of the pair of static contact leading-out terminals;
the first elastic piece comprises a first base portion and elastic arms, the first base portion is connected to the push rod assembly through a first anti-rotation structure, both ends of the first base portion along the first direction are provided at least one of the elastic arms;
the elastic arms at both ends of the first base portion along the first direction are respectively abuts against both ends of the movable contact piece along the first direction.

6 . The relay according to claim 5 , wherein the elastic arm comprises an extension portion and an abutting portion, the extension portion is connected to the first base portion, the abutting portion is connected to one end of the extension portion far away from the first base portion, and abuts against one end of the movable contact piece along the first direction; wherein a width of an end of the extension portion connected to the first base portion is greater than a width of an end of the extension portion connected to the abutting portion.

7 . The relay according to claim 6 , wherein the width of the extension portion gradually decreases from the first base portion to the abutting portion.

8 . The relay according to claim 5 , wherein the first anti-rotation structure comprises:
at least two first limiting protrusions disposed on one of the push rod assembly and the first base portion; and
at least two first limiting holes disposed on another one of the push rod assembly and the first base portion; wherein the at least two first limiting protrusions are inserted into the at least two first limiting holes respectively.

9 . The relay according to claim 1 , wherein the limiting component is a second elastic piece, the second elastic piece is connected to one of the elastic assembly and the movable contact assembly through a second anti-rotation structure, and connected to another one of the elastic assembly and the movable contact assembly through a third anti-rotation structure.

10 . The relay according to claim 9 , wherein the second anti-rotation structure comprises:
at least two second limiting protrusions disposed on one of the elastic assembly and the second elastic piece;
at least two second limiting holes disposed on another one of the elastic assembly and the second elastic piece; wherein the at least two second limiting protrusions are inserted into the at least two second limiting holes respectively.

11 . The relay according to claim 10 , wherein the elastic assembly is connected to the push rod assembly through a first anti-rotation structure; the first anti-rotation structure comprises at least two first limiting protrusions and at least two first limiting hole, the at least two first limiting protrusions are disposed on the push rod assembly, the at least two first limiting hole are disposed on the elastic assembly, the at least two first limiting protrusions are inserted into the at least two first limiting holes respectively;
each of the second limiting protrusions is a protruding ring, one protruding ring surrounds one first limiting hole; an inner ring surface of the protruding ring is flush with a hole wall of the first limiting hole.

12 . The relay according to claim 11 , wherein the protruding ring is formed by turning and bending a hole edge of the first limiting hole of the elastic assembly towards a direction close to the movable contact assembly.

13 . The relay according to claim 9 , wherein the relay further comprises a pair of static contact leading-out terminals, both ends of the movable contact piece along the first direction are configured to contact with or separate from the pair of static contact leading-out terminals; wherein the first direction is an arrangement direction of the pair of static contact leading-out terminals;
the second elastic piece comprises a second base portion, a deformation portion and a connection portion; the second base portion is connected to one of the elastic assembly and the movable contact assembly through a second anti-rotation structure, both sides of the second base portion along the first direction are provided with the deformation portion and the connection portion, the second base portion is connected to the connection portion through the deformation portion; the connection portion is connected to another one of the elastic assembly and the movable contact assembly through a third anti-rotation structure.

14 . The relay according to claim 13 , wherein along the first direction, the connection portion located at one side of the second base portion and the movable contact assembly form a first joint, the connection portion located at another side of the second base portion and the movable contact assembly form a second joint,
there is a first distance between the first joint and the second joint, there is a second distance between the deformation ports at both sides of the second base port, and the first distance is smaller than the second distance; wherein the second distance is a maximum distance between the deformation portions at both sides of the second base portion.

15 . The relay according to claim 9 , wherein the third anti-rotation structure comprises:
at least two third limiting protrusions disposed on one of the second elastic piece and the movable contact assembly; and
at least two third limiting holes disposed on another one of the second elastic piece and the movable contact assembly; the at least two third limiting protrusions are inserted into the at least two third limiting holes.

16 . The relay according to claim 1 , wherein the relay further comprises a first magnetizer;
the first magnetizer is disposed at a side of the movable contact assembly facing the static contact leading-out terminal, and configured to resist an electric repulsion force.

17 . The relay according to claim 16 , wherein the movable contact assembly further comprises a second magnetizer, the second magnetizer is fixedly connected to a side of the movabl

Assignees

• Xiamen Hongfa Electric Power Controls Co Ltd

Inventors

• Dai Wenguang
• Fu Dapeng
• Wu Yiwen
• Su Liji

Classifications

• H01H50/14

  Terminal arrangements {(for coils H01H50/443)} · CPC title

• H01H50/64

  Driving arrangements between movable part of magnetic circuit and contact (structurally associated with contact spring sets H01H50/58) · CPC title

• H01H50/58 Primary

  Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature · CPC title

• H01H1/502

  the action of the contact pressure spring becoming active only after engagement of the contacts · CPC title

• H01H50/18

  Movable parts of magnetic circuits, e.g. armature · CPC title