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CN-224232604-U - Magnetic latching relay

CN224232604UCN 224232604 UCN224232604 UCN 224232604UCN-224232604-U

Abstract

The utility model belongs to the technical field of relays, and discloses a magnetic latching relay. The magnetic latching relay comprises a shell, a static contact assembly, a contact assembly and an electromagnetic structure, wherein the static contact assembly comprises a first static contact and a second static contact, the contact assembly is arranged on the shell and comprises a mounting piece, an elastic piece and a conductive bridge, the conductive bridge is movably arranged in the mounting piece, the elastic piece is fixed in the mounting piece, and the electromagnetic structure is fixed in the shell and is used for driving the contact assembly to move in a connection position and a disconnection position. The contact assembly is positioned at the on position, the elastic piece can apply elastic force which enables the conductive bridge to be abutted against the first fixed contact and the second fixed contact, and the contact assembly is positioned at the off position, the elastic piece is abutted against the shell and can apply elastic force which enables the conductive bridge to move towards the first fixed contact and the second fixed contact. The utility model can accelerate the switching-on speed, buffer the impact between the moving contact and the fixed contact, and the moving contact and the fixed contact are not easy to be repelled when short-circuit current is encountered.

Inventors

  • WANG PINGTAO
  • YAN JIANFU
  • LIU XIAOLONG
  • SHI YIZHU

Assignees

  • 浙江正泰电器股份有限公司

Dates

Publication Date
20260512
Application Date
20250509

Claims (12)

  1. 1. A magnetic latching relay, comprising: A housing (1); The fixed contact assembly (2) comprises a first fixed contact (21) and a second fixed contact (22), and the first fixed contact (21) and the second fixed contact (22) are fixed on the shell (1) at intervals; The contact assembly (3) is arranged on the shell (1), the contact assembly (3) comprises a mounting piece (31), an elastic piece (32) and a conductive bridge (33), the conductive bridge (33) is movably arranged in the mounting piece (31), the elastic piece (32) is fixed in the mounting piece (31) and is positioned on one side, far away from the first fixed contact (21) and the second fixed contact (22), of the conductive bridge (33), and the elastic piece (32) can enable the conductive bridge (33) to be abutted to the mounting piece (31); -an electromagnetic structure (4) fixed inside the housing (1) and for driving the contact assembly (3) to move between an on position and an off position; The contact assembly (3) is positioned at the on position, the first fixed contact (21) and the second fixed contact (22) are in contact conduction with the conductive bridge (33), and the elastic piece (32) can apply elastic force for enabling the conductive bridge (33) to be abutted against the first fixed contact (21) and the second fixed contact (22); The contact assembly (3) is located at the disconnection position, the first fixed contact (21) and the second fixed contact (22) are disconnected with the conductive bridge (33), and the elastic piece (32) is abutted against the shell (1) and can apply elastic force for enabling the conductive bridge (33) to move towards the first fixed contact (21) and the second fixed contact (22).
  2. 2. The magnetic latching relay according to claim 1, wherein the elastic member (32) comprises a first spring piece portion (321) and a second spring piece portion (322), the second spring piece portion (322) is disposed opposite to the first spring piece portion (321), wherein the first spring piece portion (321) abuts against the conductive bridge (33), the contact assembly (3) is located at the disconnection position, and the second spring piece portion (322) abuts against the housing (1).
  3. 3. The magnetic latching relay according to claim 2, wherein the conductive bridge (33) is provided with one, the first spring piece portion (321) and the second spring piece portion (322) are arranged side by side, the first spring piece portion (321) is provided with one, the second spring piece portion (322) is provided with two, and the first spring piece portion (321) is located between the two second spring piece portions (322), or The conductive bridge (33) is provided with at least two side by side, first shell fragment portion (321) with second shell fragment portion (322) set up side by side, first shell fragment portion (321) be equipped with at least two and with conductive bridge (33) one-to-one sets up, first shell fragment portion (321) with corresponding conductive bridge (33) offsets, every adjacent two all be equipped with at least one between first shell fragment portion (321) second shell fragment portion (322).
  4. 4. The magnetic latching relay according to claim 2, characterized in that the first spring part (321) comprises two first lugs (3211) arranged at an angle, both of which first lugs (3211) are in abutment with the conductive bridge (33), and/or the second spring part (322) comprises two second lugs (3221) arranged at an angle, both of which second lugs (3221) are in abutment with the housing (1), the contact assembly (3) being in the disconnected position.
  5. 5. The magnetic latching relay according to claim 1, wherein the mounting member (31) comprises a first bracket (311) and a second bracket (312), the first bracket (311) is connected with the electromagnetic structure (4), the second bracket (312) is fastened to the first bracket (311), a mounting cavity is formed by surrounding the second bracket (312) and the first bracket (311), the conductive bridge (33) and the elastic member (32) are both positioned in the mounting cavity, and the elastic member (32) is positioned on a side of the conductive bridge (33) away from the first bracket (311).
  6. 6. The magnetic latching relay according to claim 5, wherein at least two protrusions are arranged side by side on the first bracket (311), one conductive bridge (33) is arranged between each two adjacent protrusions, all the protrusions are located on the same side of the elastic member (32), and the elastic member (32) is clamped between at least one protrusion and the second bracket (312).
  7. 7. The magnetic latching relay according to claim 6, wherein the protrusions comprise two first protrusions (3111) and one second protrusion (3112), the second protrusion (3112) is located between the two first protrusions (3111), the elastic member (32) comprises two oppositely disposed side lugs (325), the two side lugs (325) are disposed in one-to-one correspondence with the two first protrusions (3111), and the side lugs (325) are clamped between the corresponding first protrusions (3111) and the second bracket (312).
  8. 8. The magnetic latching relay according to claim 5, characterized in that the second bracket (312) is provided with a third protrusion (3121), the elastic element (32) is provided with a first positioning hole (324), and the third protrusion (3121) is inserted into the first positioning hole (324).
  9. 9. The magnetic latching relay according to claim 1, wherein the electromagnetic structure (4) comprises a manual switch (41), an electromagnetic component (42) and an armature (43), the armature (43) is connected with the contact assembly (3), the electromagnetic component (42) is fixed on the housing (1) and used for driving the armature (43) to move so as to drive the contact assembly (3) to move, and the manual switch (41) penetrates through the inner wall of the housing (1) and used for stirring the armature (43) so as to drive the armature (43) to move.
  10. 10. The magnetic latching relay according to claim 9, wherein the housing (1) comprises a base (12) and a shell (13), the base (12) is arranged in the shell (13), the manual switch (41) is arranged on the inner wall of the base (12) in a penetrating manner and is in sliding connection with the base (12), the manual switch (41) is provided with a pushing part (411), the shell (13) is provided with a display through hole (131), the pushing part (411) stretches into the display through hole (131) and extends out of the shell (13), the manual switch (41) is provided with a connection mark (44) and a disconnection mark (45), and the connection mark (44) and the disconnection mark (45) can be selectively exposed at the display through hole (131) when the pushing part (411) is pushed.
  11. 11. The magnetic latching relay according to any of claims 1-10, wherein the first stationary contact (21) comprises a first plate (213) and a second plate (214) arranged at intervals, the first plate (213) being arranged parallel to the conductive bridge (33), the second plate (214) being in contact conduction with the conductive bridge (33).
  12. 12. The magnetic latching relay according to claim 11, characterized in that a first shroud (14) is provided in the housing (1), the first shroud (14) being located between the first plate (213) and the conductive bridge (33), the contact assembly (3) being located in the disconnected position, the elastic element (32) being in abutment with the first shroud (14).

Description

Magnetic latching relay Technical Field The utility model relates to the technical field of relays, in particular to a magnetic latching relay. Background The magnetic latching relay is a novel relay, and has the function of automatically switching on and switching off a circuit as other electromagnetic relays. The normally closed or normally open state of the magnetic latching relay is completely dependent on the action of permanent magnet steel, and the switching state is switched by triggering a pulse electric signal with a certain width. The existing magnetic latching relay can realize the on-off of a moving contact and a static contact through the cooperation of an electromagnetic structure and a bridge type contact structure, the bridge type structure is provided with two groups of contacts, and the two moving contacts on the moving contact can realize the on-off of current only by being respectively connected or disconnected with the corresponding two static contacts. When the moving contact in the bridge type contact structure is driven to move through the electromagnetic structure, the moving contact is driven by adopting a magnetic effect, the driving speed is slower, and then the switching-on speed between the moving contact and the fixed contact is slower. In addition, when the contact structure encounters short-circuit current, the moving contact and the fixed contact are easy to repel and generate electric arcs, so that the burning loss of the magnetic latching relay is easy to occur, and the failure rate of the contact is extremely high. Disclosure of utility model The utility model aims to provide a magnetic latching relay which can accelerate the switching-on speed, buffer the impact between a moving contact and a fixed contact, and prevent the moving contact from being repelled from being damaged when short-circuit current is met, so that the loss rate of the contact is lower, and the short-circuit current resistance is greatly improved. To achieve the purpose, the utility model adopts the following technical scheme: A magnetic latching relay comprising: A housing; The fixed contact assembly comprises a first fixed contact and a second fixed contact, and the first fixed contact and the second fixed contact are fixed on the shell at intervals; the contact assembly is arranged on the shell and comprises a mounting piece, an elastic piece and a conductive bridge, the conductive bridge is movably arranged in the mounting piece, the elastic piece is fixed in the mounting piece and is positioned on one side, far away from the first fixed contact and the second fixed contact, of the conductive bridge, and the elastic piece can enable the conductive bridge to be abutted to the mounting piece; An electromagnetic structure fixed in the housing and used for driving the contact assembly to move between an on position and an off position; the contact assembly is positioned at the connection position, the first fixed contact and the second fixed contact are in contact conduction with the conductive bridge, and the elastic piece can apply elastic force which enables the conductive bridge to be abutted against the first fixed contact and the second fixed contact; The contact assembly is located at the disconnection position, the first fixed contact and the second fixed contact are disconnected with the conductive bridge, and the elastic piece is propped against the shell and can apply elastic force for enabling the conductive bridge to move towards the first fixed contact and the second fixed contact. In some possible embodiments, the elastic piece comprises a first elastic piece portion and a second elastic piece portion, the second elastic piece portion is arranged opposite to the first elastic piece portion, the first elastic piece portion abuts against the conductive bridge, the contact assembly is located at the disconnection position, and the second elastic piece portion abuts against the shell. In some possible embodiments, the conductive bridge is provided with one, the first elastic piece part and the second elastic piece part are arranged side by side, the first elastic piece part is provided with one, the second elastic piece part is provided with two, and the first elastic piece part is positioned between the two second elastic piece parts, or The conductive bridge is provided with at least two side by side, first shell fragment portion with second shell fragment portion sets up side by side, first shell fragment portion be equipped with at least two and with the conductive bridge one-to-one sets up, first shell fragment portion with corresponding conductive bridge offsets, every adjacent two all be equipped with at least one between the first shell fragment portion second shell fragment portion. In some possible embodiments, the first elastic piece portion includes two first tabs disposed at an included angle, and the two first tabs are both abutted against the conductive bridge, and/or the s