Magnetic latching relay pushing sheet

Abstract

The utility model provides a magnetic latching relay pushing piece, and belongs to the technical field of relays. The push sheet comprises a first push surface and a second push surface, and the distances between the first push surface and the plane where the elastic parts are located and the distances between the second push surface and the plane where the elastic parts are located are unequal, so that the actuation time of the two elastic parts is not synchronous under the action of the push sheet, and there is a sequence. The moving contact disconnected after actuation is ablated as a sacrifice piece, so that the contact stability of the moving contact disconnected before can be effectively improved, and the purpose of stabilizing the contact resistance is achieved.

Description

Technical Field

[0001] The present application belongs to the technical field of relays, and in particular relates to a driving piece of a magnetic latching relay. Background Art

[0002] The open and closed state of the contacts of the magnetic latching relay is maintained by the magnetic force generated by the permanent magnet. When the contacts of the relay need to be opened or closed (i.e., when the load is connected or disconnected), the coil is excited by a positive (negative) DC pulse voltage, and the relay completes the open and closed state conversion in an instant. Usually, when the contacts are in the holding state, the coil does not need to continue to be energized, and the magnetic force of the permanent magnet can maintain the state of the relay unchanged. The contacts are divided into moving contacts and static contacts. The moving contacts are set on the moving reed, and the static contacts are set on the connection terminals.

[0003] In related technology, the push piece is used to drive the movement of the moving reed piece. The side of the push piece close to the moving contact is the pushing surface, and the pushing surface is located on the same plane as a whole. When the moving reed piece is selected to have multiple branches, the push piece of this structure will drive the multiple branches to disconnect synchronously, causing ablation to occur on multiple moving contacts.

[0004] Therefore, it is necessary to provide a magnetic latching relay push piece to solve the problems raised in the above background technology. Summary of the invention

[0005] The present application provides a magnetic holding relay pusher, which includes a first pusher surface and a second pusher surface. The first pusher surface and the second pusher surface are at different distances from the plane where the elastic part is located, so that under the action of the pusher, the actuation time of the two elastic parts is not synchronized, and there is a sequence. The moving contact that is actuated and disconnected first will not cause ablation, and the moving contact that is actuated and disconnected later will be ablated as a sacrificial part, which can effectively improve the contact stability of the moving contact that is disconnected first, thereby achieving the purpose of stabilizing the contact resistance.

[0006] In order to solve the above technical problems, the technical solution of this application is:

[0007] A magnetic latching relay push piece, comprising a clamping portion, a pushing portion and a connecting portion, wherein the clamping portion is connected to a driving assembly, the pushing portion is used to drive a moving spring piece to move, and the connecting portion connects the clamping portion and the pushing portion, the moving spring piece comprises a fixing portion and at least two elastic portions arranged side by side, each of the elastic portions is fixed to the fixing portion at one end and suspended at the other end; a gap is maintained between two adjacent elastic portions; the pushing portion comprises a first pushing portion and a second pushing portion, the first pushing portion and the second pushing portion are spaced apart and arranged at opposite sides of the moving spring piece, and the first pushing portion is located on a side of the moving spring piece where a moving contact is arranged, the first pushing portion comprises a first pushing surface and a second pushing surface, the first pushing surface and the second pushing surface are respectively used to contact the two elastic portions to apply a driving force to the two elastic portions, the two pushing surfaces are located on different planes, and the first pushing surface and the second pushing surface are at different distances from the plane where the elastic portions are located.

[0008] Preferably, the first pushing surface is protruding relative to the second pushing surface, and the distance between the first pushing surface and the plane where the elastic portion is located is smaller than the distance between the second pushing surface and the plane where the elastic portion is located.

[0009] Preferably, the fixing portion is fixed to the housing of the relay via a fixing piece, and both ends of the connecting portion are respectively fixed to the clamping portion and the top of the pushing portion, and the three cooperate to form a U-shaped groove that avoids the fixing piece.

[0010] Preferably, the clamping portion, the pushing portion and the connecting portion are integrally formed.

[0011] The beneficial effects of this application are:

[0012] The pushing sheet includes a first pushing surface and a second pushing surface. The distances between the first pushing surface and the second pushing surface and the plane where the elastic part is located are different, so that the actuation time of the two elastic parts is not synchronized under the action of the pushing sheet, and there is a sequence. The moving contact that is actuated and disconnected first will not cause ablation, and the moving contact that is actuated and disconnected later will act as a sacrificial part and ablation will occur, which can effectively improve the contact stability of the moving contact that is disconnected first and achieve the purpose of stabilizing the contact resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A three-dimensional structural diagram showing a magnetic latching relay pusher provided by the present application;

[0014] Figure 2 express Figure 1 The schematic diagram of the position relationship between the pusher and the moving spring of the magnetic latching relay shown;

[0015] Figure 3 express Figure 1The diagram shown is a schematic diagram of the cooperation between the push piece of the magnetic holding relay and the two elastic parts. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0017] Please refer to Figure 1-Figure 3 The present application provides a magnetic latching relay pusher 100, comprising a clamping portion 10, a pusher portion 20 and a connecting portion 30, wherein the clamping portion 10 is connected to a driving assembly, the pusher portion 20 is used to drive the moving spring 200 to move, and the connecting portion 30 connects the clamping portion 10 and the pusher portion 20. Preferably, the clamping portion 10, the pusher portion 20 and the connecting portion 30 are integrally formed.

[0018] The movable spring piece 200 includes a fixed portion 210 and at least two elastic portions 220 arranged side by side, each of the elastic portions 220 is fixed to the fixed portion 210 at one end and suspended at the other end; a gap is maintained between two adjacent elastic portions 220, each of the elastic portions 220 is provided with a movable contact 230, and each of the movable contacts 230 includes a matching static contact.

[0019] The fixing portion 210 is fixed to the housing of the relay via a fixing member, and one end of each of the elastic portions 220 is fixed to the fixing portion 210 and the other end is suspended; a distance is maintained between two adjacent elastic portions 220 .

[0020] The pushing portion 20 includes a first pushing portion 21 and a second pushing portion 22. The first pushing portion 21 and the second pushing portion 22 are arranged at intervals on opposite sides of the movable spring piece 200, and the first pushing portion 21 is located on the side of the movable spring piece 200 where the moving contact 230 is arranged. The first pushing portion 21 includes a first pushing surface 211 and a second pushing surface 212. The first pushing surface 211 and the second pushing surface 212 are respectively used to contact the two elastic portions 220 to apply driving force to the two elastic portions 220. The first pushing surface 211 and the second pushing surface 212 are located on different planes, and the distances between the first pushing surface 211 and the second pushing surface 212 and the plane where the elastic portion 220 is located are different.

[0021] The first pushing portion 21 is used to drive the elastic portion 220 to move in a first direction, and the second pushing portion 22 is used to drive the elastic portion 220 to move in a second direction, wherein the first direction is the direction in which the moving contact 230 moves away from the static contact, and the second direction is the direction in which the moving contact 230 approaches the static contact.

[0022] In this embodiment, the first pushing surface 211 is arranged to protrude relative to the second pushing surface 212, so that the distance between the first pushing surface 211 and the plane where the elastic part 220 is located is smaller than the distance between the second pushing surface 212 and the plane where the elastic part 220 is located. When the first pushing part 21 starts to drive the movable spring piece 32 to disconnect, since the movement distance of the first pushing surface 211 is shorter, it will contact the elastic part 220 earlier than the second pushing surface 212, so that the two elastic parts 220 are disconnected in a tandem order, and the phenomenon of contact ablation can be completely left to the elastic part 220 that is disconnected later, which can effectively protect the contact on the elastic part 220 that is disconnected first from ablation, thereby achieving the purpose of stabilizing the contact resistance.

[0023] The second pushing portion 22 is used to drive the pushing surface of the two elastic portions 220 to be a plane, so that the two elastic portions 220 can still be driven in a synchronous manner according to the prior art, so that the moving contacts 230 on the two elastic portions 220 can be in synchronous contact.

[0024] The two ends of the connecting portion 30 are respectively fixed to the clamping portion 10 and the top of the pushing portion 20 , and the three cooperate to form a U-shaped groove for avoiding the fixing member, so as to achieve a more compact assembly.

[0025] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A magnetic latching relay driving piece, characterized in that: The invention comprises a clamping part, a pushing part and a connecting part, wherein the clamping part is connected to a driving assembly, the pushing part is used to drive a moving spring piece to move, the connecting part connects the clamping part and the pushing part, the moving spring piece comprises a fixing part and at least two elastic parts arranged side by side, each of the elastic parts is fixed to the fixing part at one end and suspended at the other end; a gap is maintained between two adjacent elastic parts; the pushing part comprises a first pushing part and a second pushing part, the first pushing part and the second pushing part are arranged at intervals on opposite sides of the moving spring piece, and the first pushing part is located on a side where a moving contact of the moving spring piece is arranged, the first pushing part comprises a first pushing surface and a second pushing surface, the first pushing surface and the second pushing surface are respectively used to contact with the two elastic parts to apply a driving force to the two elastic parts, the two pushing surfaces are located on different planes, and the first pushing surface and the second pushing surface are at different distances from the plane where the elastic parts are located.

2. The magnetic latching relay push piece according to claim 1, characterized in that: The first pushing surface is protruding relative to the second pushing surface, and the distance between the first pushing surface and the plane where the elastic portion is located is smaller than the distance between the second pushing surface and the plane where the elastic portion is located.

3. The magnetic latching relay push piece according to claim 1, characterized in that: The fixing part is fixed to the housing of the relay through a fixing piece, and the two ends of the connecting part are respectively fixed to the clamping part and the top of the pushing part, and the three cooperate to form a U-shaped groove that avoids the fixing piece.

4. The magnetic latching relay push piece according to claim 1, characterized in that: The clamping portion, the pushing portion and the connecting portion are integrally formed.

Images