Auxiliary switch and relay

Abstract

The utility model relates to the technical field of electronic control devices, in particular to an auxiliary switch and a relay. The auxiliary switch comprises a mounting part, an auxiliary movable reed and an auxiliary static reed, the auxiliary movable reed and the auxiliary static reed are both mounted on the mounting part, the auxiliary movable reed is integrally provided with a first contact part, the auxiliary static reed is integrally provided with a second contact part, and the auxiliary movable reed can move relative to the auxiliary static reed; therefore, the first contact part is contacted with or separated from the second contact part. The first contact part is integrally formed on the auxiliary movable reed, and the second contact part is integrally formed on the auxiliary static reed, so that the operation of riveting or welding an auxiliary contact is not needed, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic control devices, in particular to an auxiliary switch and a relay. Background Art

[0002] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit). It is usually used in automatic control circuits. A relay is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] In the related art, in order to monitor the state of the relay, an auxiliary switch is usually set in the relay, and the auxiliary switch is riveted or welded with auxiliary contacts. When the magnetic circuit part of the relay drives the contact part to move, the state of the relay is monitored by the contact or disconnection of the auxiliary contacts. However, riveting or welding the auxiliary contacts is complicated and has low production efficiency. Utility Model Content

[0004] The embodiments of the utility model provide an auxiliary switch and a relay to improve production efficiency.

[0005] The auxiliary switch provided by the embodiment of the utility model includes a mounting portion, an auxiliary movable spring and an auxiliary static spring, wherein the auxiliary movable spring and the auxiliary static spring are both mounted on the mounting portion, the auxiliary movable spring is integrally formed with a first contact portion, and the auxiliary static spring is integrally formed with a second contact portion, and the auxiliary movable spring can move relative to the auxiliary static spring to make the first contact portion contact or separate from the second contact portion.

[0006] According to some embodiments of the present invention, the first contact portion includes at least one protrusion, and line-surface contact is formed between the protrusion and the second contact portion.

[0007] According to some embodiments of the present utility model, the auxiliary movable spring has a first end and a second end opposite to each other, the first end is used to connect to the circuit board, and the portion of the auxiliary movable spring close to the second end is bent toward the auxiliary static spring to form the protrusion.

[0008] According to some embodiments of the present invention, the number of the protrusions is two, and a buffer space is provided between the two protrusions.

[0009] According to some embodiments of the present utility model, the buffer space is a strip-shaped hole, and at least a portion of the strip-shaped hole is arranged at a position where the auxiliary movable spring sheet is bent toward the auxiliary static spring sheet.

[0010] According to some embodiments of the present invention, the auxiliary movable spring is provided with a metal layer at least on a surface of the first contact portion facing the second contact portion, and the auxiliary static spring is provided with a metal layer at least on a surface of the second contact portion facing the first contact portion.

[0011] According to some embodiments of the present invention, the second contact portion is a protrusion disposed toward the auxiliary movable spring, or the surface of the second contact portion in contact with the first contact portion is coplanar with the surface of the auxiliary static spring facing the auxiliary movable spring.

[0012] The relay provided by the embodiment of the utility model includes a shell and the auxiliary switch, the first contact portion and the second contact portion are located inside the shell, and the end of the auxiliary moving spring away from the first contact portion and the end of the auxiliary static spring away from the second contact portion are both located outside the shell.

[0013] According to some embodiments of the utility model, the relay further comprises a fixing frame, a contact portion and a magnetic circuit portion, wherein the fixing frame is fixedly connected to the housing; the magnetic circuit portion comprises a coil assembly and a magnetic rotating member, wherein the magnetic rotating member is rotatably mounted on the fixing frame, and the coil assembly is used to drive the magnetic rotating member to swing around a set axis to drive the contact portion to move to a closed position or an open position, and to drive the auxiliary moving reed to move relative to the auxiliary static reed to make the first contact portion contact or separate from the second contact portion;

[0014] The mounting portion is integrally formed with the fixing frame, and the auxiliary dynamic spring piece and the auxiliary static spring piece are both located at one end of the fixing frame in the length direction.

[0015] According to some embodiments of the present utility model, the contact part includes a first movable spring part and a second movable spring part, the first movable spring part includes a first movable spring piece, a first movable contact and a first static contact; the second movable spring part includes a second movable spring piece, a second movable contact and a second static contact, the first movable contact of the first movable spring part corresponds to the position of the second static contact of the second movable spring part, and the second movable contact of the second movable spring part corresponds to the position of the first static contact of the first movable spring part;

[0016] In the closed position, the first moving contact contacts the second stationary contact, and the second moving contact contacts the first stationary contact; in the open position, the first moving contact is separated from the second stationary contact, and the second moving contact is separated from the first stationary contact.

[0017] According to some embodiments of the utility model, the magnetic rotating member includes a fixing member, the fixing member is provided with a rotating shaft, the set axis is the axis of the rotating shaft; the fixing frame is provided with an axial hole, the rotating shaft matches the axial hole, and the fixing member has a first support arm and a second support arm;

[0018] The relay further includes two pushers, the two pushers are respectively a first pusher and a second pusher; one end of the first pusher is connected to the first support arm, and the other end of the first pusher is connected to the first moving contact through the first moving spring; one end of the second pusher is connected to the second support arm, and the other end of the second pusher is connected to the second moving contact through the second moving spring;

[0019] The auxiliary movable spring is connected to one of the pushers, and the pusher connected to the auxiliary movable spring can drive the auxiliary movable spring to move relative to the auxiliary static spring, wherein in the closed position, the first contact portion is in contact with the second contact portion; in the open position, the first contact portion is separated from the second contact portion.

[0020] According to some embodiments of the present utility model, a pushing member connected to the auxiliary movable spring is provided with a slot; and an end portion of the auxiliary movable spring close to the first contact portion is limitedly located in the slot.

[0021] According to some embodiments of the utility model, both groove walls of the clamping groove are provided with convex ribs, and the convex ribs are in contact with the auxiliary movable spring.

[0022] One embodiment of the above utility model has at least the following advantages or beneficial effects:

[0023] The auxiliary switch provided by the embodiment of the utility model has a first contact portion formed integrally on the auxiliary moving spring piece and a second contact portion formed integrally on the auxiliary static spring piece, and does not require riveting or welding of the auxiliary contacts, thereby improving production efficiency. When the magnetic circuit part of the relay drives the contact part to move, it can simultaneously drive the auxiliary moving spring piece to move relative to the auxiliary static spring piece, so that the first contact portion is in contact with or separated from the second contact portion, thereby monitoring the closing and opening states of the main contacts of the contact part of the relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 What is shown is a schematic diagram of the structure of the auxiliary switch provided in the embodiment of the utility model;

[0025] Figure 2 Shown is a front view of an auxiliary switch provided by an embodiment of the utility model;

[0026] Figure 3What is shown is a schematic diagram of the structure of a relay provided in an embodiment of the utility model;

[0027] Figure 4 What is shown is a schematic diagram of the internal structure of a relay provided by an embodiment of the utility model;

[0028] Figure 5 What is shown is a schematic diagram of the internal structure of a relay provided in an embodiment of the utility model (the fixing frame is not shown);

[0029] Figure 6 It is shown that Figure 5 A partial enlarged view of the middle A;

[0030] Figure 7 Shown is a schematic diagram of a relay provided by an embodiment of the utility model in a state where a first contact portion and a second contact portion are in contact.

[0031] The following are the descriptions of the reference numerals:

[0032] 10-auxiliary switch; 11-mounting part; 12-auxiliary moving spring; 121-first contact part; 1211-protrusion; 1212-buffer space; 13-auxiliary static spring; 131-second contact part; 20-housing; 21-base; 22-cover; 30-fixing frame; 41-coil assembly; 411-first yoke; 412-second yoke; 42-armature assembly; 421-fixing member; 4211- Rotating shaft; 4212-first arm; 4213-second arm; 422-first armature; 423-second armature; 51-first moving spring; 52-first moving contact; 53-first static contact; 54-first lead-out piece; 61-second moving spring; 62-second moving contact; 63-second static contact; 64-second lead-out piece; 71-first pushing member; 72-second pushing member; 721-slot; 722-convex rib. DETAILED DESCRIPTION

[0033] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0034] See also Figures 1 to 7As shown, this embodiment provides an auxiliary switch 10, including a mounting portion 11, an auxiliary movable spring 12 and an auxiliary static spring 13, the auxiliary movable spring 12 and the auxiliary static spring 13 are both mounted on the mounting portion 11, the auxiliary movable spring 12 is integrally formed with a first contact portion 121, the auxiliary static spring 13 is integrally formed with a second contact portion 131, and the auxiliary movable spring 12 can move relative to the auxiliary static spring 13 to make the first contact portion 121 contact or separate from the second contact portion 131.

[0035] The auxiliary switch 10 provided in this embodiment has the first contact portion 121 integrally formed on the auxiliary moving spring piece 12, and the second contact portion 131 integrally formed on the auxiliary static spring piece 13, so that there is no need to perform riveting or welding of the auxiliary contacts, thereby improving production efficiency. When the magnetic circuit part of the relay drives the contact part to move, it can simultaneously drive the auxiliary moving spring piece 12 to move relative to the auxiliary static spring piece 13, so that the first contact portion 121 is in contact with or separated from the second contact portion 131, thereby monitoring the closing and opening states of the main contacts of the contact part of the relay.

[0036] In one embodiment, see Figure 1 and Figure 2 As shown, the first contact portion 121 includes at least one protrusion 1211, and a line-surface contact is formed between the protrusion 1211 and the second contact portion 131. This ensures that the protrusion 1211 and the second contact portion 131 are in reliable contact, thereby improving the sensitivity of the auxiliary switch 10.

[0037] In some embodiments, the protrusion 1211 can be formed by punching the auxiliary movable spring 12 or by bending the auxiliary movable spring 12 .

[0038] In other embodiments, the protrusion 1211 can also make the auxiliary movable spring 12 into a sheet structure with different thicknesses. For example, the auxiliary movable spring 12 is partially thickened, and the thickened part forms the protrusion 1211. For example, the auxiliary movable spring 12 is formed with two thinning areas set at intervals, and the part between the two thinning areas forms the protrusion 1211.

[0039] In some other embodiments, the auxiliary movable spring 12 can be formed by die casting.

[0040] In one embodiment, the auxiliary movable spring 12 has a first end and a second end opposite to each other, the first end is used to connect to the circuit board, and a portion of the auxiliary movable spring 12 close to the second end is bent toward the auxiliary static spring 13 to form a protrusion 1211 .

[0041] The mounting portion 11 is provided with a first mounting hole and a second mounting hole, the auxiliary movable spring 12 is mounted in the first mounting hole, and the first end and the second end of the auxiliary movable spring 12 are respectively located at two sides of the mounting portion 11. The auxiliary static spring 13 also has a first end and a second end opposite to each other, the auxiliary static spring 13 is mounted in the second mounting hole, and the first end and the second end of the auxiliary static spring 13 are respectively located at two sides of the mounting portion 11.

[0042] For example, see Figure 1 As shown, the protrusion 1211 is generally in a U-shaped bending structure, and the surface of the U-shaped bending structure facing the second contact portion 131 is an arc-shaped surface; the second contact portion 131 is a generally vertical plane, and the arc-shaped surface is in line-surface contact with the second contact surface, thereby improving the contact reliability and further improving the sensitivity of the auxiliary switch 10.

[0043] It should be noted that the shape of the protrusion is not limited to the U-shaped bending structure, for example, it can also be a V-shaped bending structure, and the surface of the V-shaped bending structure facing the second contact portion 131 is an arc surface.

[0044] In one embodiment, see Figure 1 As shown, there are two protrusions 1211, and a buffer space 1212 is provided between the two protrusions 1211. In this way, a double contact effect can be produced, ensuring that the first contact portion 121 and the second contact portion 131 of the auxiliary switch 10 can be in normal contact, thereby enhancing contact reliability. During the design, the moving stroke of the auxiliary movable spring piece 12 toward the auxiliary static spring piece 13 is designed to be much larger than the distance between the first contact portion 121 and the second contact portion 131. Due to the provision of the buffer space 1212, when the contact between one protrusion 1211 and the auxiliary static spring piece 13 fails, the other protrusion 1211 can continue to move toward the direction close to the auxiliary static spring piece 13 under the action of the driving force, that is, the other protrusion 1211 can go through an overstroke until the other protrusion 1211 contacts and conducts with the second contact portion 131.

[0045] In one embodiment, the buffer space 1212 is a strip-shaped hole, and at least a portion of the strip-shaped hole is disposed at a position where the auxiliary movable spring piece 12 is bent toward the auxiliary static spring piece 13 .

[0046] See also Figure 1 As shown, the strip hole extends from the position where the auxiliary movable spring piece 12 is bent toward the auxiliary static spring piece 13 to both ends to increase the buffering effect. When one of the protrusions 1211 fails, it is ensured that the other protrusion 1211 can normally contact the second contact portion 131.

[0047] It should be understood that during production and processing, the strip-shaped hole can be processed on the plate-shaped auxiliary dynamic spring piece 12 first, and then bent to form the protrusion 1211, or the plate-shaped auxiliary dynamic spring piece 12 can be bent first, and then the bending position can be processed to form the strip-shaped hole.

[0048] It should be noted that the buffer space 1212 is not limited to the bar-shaped hole, and other forms of buffer space 1212 can be selected according to actual production and processing needs, as long as the function of double contacts can be achieved and the contact reliability can be improved.

[0049] In some embodiments, see Figure 1 As shown, the second contact portion 131 is a protrusion disposed toward the auxiliary movable spring piece 12. The protrusion can be formed by punching the auxiliary static spring piece 13, or by bending the auxiliary static spring piece 13.

[0050] Exemplarily, the surface of the protrusion 1211 facing the first contact portion 121 may be a plane, so as to form a line-surface contact with the arc-shaped surface of the protrusion 1211 .

[0051] In some other embodiments, the surface of the second contact portion 131 that contacts the first contact portion 121 is coplanar with the surface of the auxiliary static spring piece 13 that faces the auxiliary movable spring piece 12 .

[0052] Exemplarily, the auxiliary static spring piece 13 may be a flat plate-shaped structure, and the second contact portion 131 is a portion of the flat plate-shaped structure corresponding to the first contact portion 121 .

[0053] It should be understood that, among the surfaces of the protrusion 1211 and the second contact portion 131 that are close to each other, one is a curved surface (not limited to an arc surface) and the other is a flat surface, as long as the curved surface and the flat surface are in line-surface contact to enhance contact reliability.

[0054] In one embodiment, the auxiliary movable spring 12 is provided with a metal layer (not shown in the figure) at least on the surface of the first contact portion 121 facing the second contact portion 131, and the auxiliary static spring 13 is provided with a metal layer (not shown in the figure) at least on the surface of the second contact portion 131 facing the first contact portion 121.

[0055] By providing a metal layer, it is possible to slow down the oxidation rate of the auxiliary switch 10. For example, the metal layer can be formed by electroplating.

[0056] The material of the metal layer can be silver or silver alloy. After silver plating, the contact resistance is small, which increases the sensitivity of the auxiliary switch 10. When the first contact portion 121 contacts the second contact portion 131, it can quickly identify that the auxiliary switch 10 is in the on state.

[0057] Of course, the material of the metal layer can also be gold. For example, gold plating can be used in the military field.

[0058] In some embodiments, the auxiliary movable spring 12 is provided with a metal layer on the surface of the first contact portion 121 facing the second contact portion 131, and the auxiliary static spring 13 is provided with a metal layer on the surface of the second contact portion 131 facing the first contact portion 121. In this way, the sensitivity and anti-oxidation ability of the auxiliary switch 10 can be increased while the coating area is as small as possible.

[0059] In other embodiments, a metal layer is provided on the entire surface of the auxiliary moving spring 12 and the entire surface of the auxiliary static spring 13. During electroplating, the auxiliary moving spring 12 and the auxiliary static spring 13 can be placed in a plating solution for electroplating, which has a simple process and high production efficiency.

[0060] This embodiment also provides a relay, including a housing 20 and an auxiliary switch 10 provided in this embodiment, wherein the first contact portion 121 and the second contact portion 131 are located inside the housing 20, and the ends of the auxiliary moving spring 12 and the auxiliary static spring 13 away from the first contact portion 121 and the second contact portion 131 are located outside the housing 20.

[0061] The relay provided in this embodiment uses the auxiliary switch 10 provided in this embodiment, and by integrally forming the first contact portion 121 on the auxiliary moving spring piece 12 and integrally forming the second contact portion 131 on the auxiliary static spring piece 13, there is no need to perform riveting or welding of the auxiliary contacts, thereby improving the production efficiency of the relay. When the magnetic circuit part of the relay drives the contact part to move, it can simultaneously drive the auxiliary moving spring piece 12 to move relative to the auxiliary static spring piece 13, so that the first contact portion 121 is in contact with or separated from the second contact portion 131, thereby monitoring the closing and opening states of the main contacts of the contact part of the relay.

[0062] In one embodiment, see Figure 3 As shown, the housing 20 includes a base 21 and a cover 22, the cover 22 is covered on the base 21, and the ends of the auxiliary movable spring 12 and the auxiliary static spring 13 away from the first contact portion 121 and the second contact portion 131 can extend from the base 21 to the outside of the housing 20, or extend from the cover 22 to the outside of the housing 20. It should be noted that, in the use state, the base 21 is not necessarily located below the cover 22.

[0063] In one embodiment, see Figure 4As shown, the relay also includes a fixing frame 30, a contact portion and a magnetic circuit portion, wherein the fixing frame 30 is fixedly connected to the housing 20; the magnetic circuit portion includes a coil assembly 41 and a magnetic rotating member, wherein the magnetic rotating member is rotatably mounted on the fixing frame 30, and the coil assembly 41 is used to drive the magnetic rotating member to swing around a set axis to drive the contact portion to move to a closed position or an open position, and drive the auxiliary moving spring piece 12 to move relative to the auxiliary static spring piece 13, so that the first contact portion 121 is in contact with or separated from the second contact portion 131; the mounting portion 11 is integrally formed with the fixing frame 30, and the auxiliary moving spring piece 12 and the auxiliary static spring piece 13 are both located at one end of the length direction of the fixing frame 30.

[0064] Exemplarily, the coil assembly 41 includes a coil body, an iron core is arranged inside the coil body, one end of the iron core is connected to the first yoke 411, and the other end of the iron core is connected to the second yoke 412. The magnetic rotating part can be an armature assembly 42, and the armature assembly 42 includes a fixing part 421 and a first armature 422 and a second armature 423 partially enclosed in the fixing part 421; the first yoke 411 is located at one end of the first armature 422 and the second armature 423, and the second yoke 412 is located at the other end of the first armature 422 and the second armature 423; in the closed position, the first armature 422 is attracted to the second yoke 412, and the second armature 423 is attracted to the first yoke 411; in the open position, the first armature 422 is attracted to the first yoke 411, and the second armature 423 is attracted to the second yoke 412.

[0065] The magnetic rotating part also includes a magnet, which is arranged between the first armature 422 and the second armature 423 and fixed together by a fixing part 421. Exemplarily, the fixing part 421 can be an injection molded part, which covers the first armature 422, the second armature 423 and the magnet to form a whole. Both ends of the first armature 422 and the second armature 423 are located outside the injection molded part to facilitate attraction with the first yoke 411 and the second yoke 412.

[0066] In one embodiment, see Figure 4 and Figure 5 As shown, the contact part includes a first movable spring part and a second movable spring part, the first movable spring part includes a first movable spring piece 51, a first movable contact 52 and a first static contact 53; the second movable spring part includes a second movable spring piece 61, a second movable contact 62 and a second static contact 63, the first movable contact 52 of the first movable spring part corresponds to the position of the second static contact 63 of the second movable spring part, and the second movable contact 62 of the second movable spring part corresponds to the position of the first static contact 53 of the first movable spring part; in the closed position, the first movable contact 52 contacts with the second static contact 63, and the second movable contact 62 contacts with the first static contact 53; in the open position, the first movable contact 52 is separated from the second static contact 63, and the second movable contact 62 is separated from the first static contact 53.

[0067] In this embodiment, the first movable spring part further includes a first lead-out piece 54, and the second movable spring part further includes a second lead-out piece 64. Exemplarily, the first movable contact 52 is connected to one end of the first movable spring piece 51, the other end of the first movable spring piece 51 is connected to the first lead-out piece 54, the first static contact 53 is riveted to the first lead-out piece 54, and the other end of the first movable spring piece 51 is fixed between the first lead-out piece 54 and the first static contact 53. Similarly, the second movable contact 62 is connected to one end of the second movable spring piece 61, the other end of the second movable spring piece 61 is connected to the second lead-out piece 64, the second static contact 63 is riveted to the second lead-out piece 64, and the other end of the second movable spring piece 61 is fixed between the second lead-out piece 64 and the second static contact 63. Among them, the first moving contact 52 of the first moving spring part corresponds to the position of the second static contact 63 of the second moving spring part, and the second moving contact 62 of the second moving spring part corresponds to the position of the first static contact 53 of the first moving spring part, so as to form a parallel circuit structure when the moving and static contacts are in contact.

[0068] In one embodiment, see Figure 5 As shown, the fixing member 421 is provided with a rotating shaft 4211, and the axis is set to be the axis of the rotating shaft 4211; the fixing frame 30 is provided with an axis hole, and the rotating shaft 4211 cooperates with the axis hole; accordingly, the outer shell 20 is also provided with an axis hole. In order to clearly describe the technical solution of this embodiment, the axis hole provided by the fixing frame 30 is named as the first axis hole, and the axis hole provided by the outer shell 20 is named as the second axis hole. One end of the rotating shaft 4211 cooperates with the first axis hole, and the second end of the rotating shaft 4211 cooperates with the second axis hole.

[0069] The fixing member 421 has a first arm 4212 and a second arm 4213 , and the first arm 4212 and the second arm 4213 extend outward from two ends of the fixing member 421 , respectively.

[0070] In this embodiment, the relay further includes two pushers, which are a first pusher 71 and a second pusher 72; one end of the first pusher 71 is connected to the first arm 4212, and the other end of the first pusher 71 is connected to the first moving contact 52 through the first moving spring 51; one end of the second pusher 72 is connected to the second arm 4213, and the other end of the second pusher 72 is connected to the second moving contact 62 through the second moving spring 61; the auxiliary moving spring 12 is connected to one of the pushers, and the pusher connected to the auxiliary moving spring 12 can drive the auxiliary moving spring 12 to move relative to the auxiliary static spring 13, wherein, in the closed position, the first contact portion 121 is in contact with the second contact portion 131; in the open position, the first contact portion 121 is separated from the second contact portion 131.

[0071] In this embodiment, the auxiliary switch 10 is disposed inside the housing 20 at a side close to the second yoke 412 , and the auxiliary movable spring 12 is connected to the second pusher 72 .

[0072] Of course, the auxiliary switch 10 can also be set at other positions in the housing 20. For example, the auxiliary switch 10 can be set on a side of the housing 20 close to the first yoke 411. In this case, the auxiliary movable spring 12 is connected to the first pusher 71.

[0073] During operation, power is supplied to the coil body to generate a magnetic field. Different magnetic fields drive the magnetic rotating member to swing accordingly, and then drive the movable contact of the contact part to move through the pusher. For example, when the magnetic rotating member swings clockwise, the first movable contact 52 separates from the second static contact 63, and at the same time, the second movable contact 62 separates from the first static contact 53; when the magnetic rotating member swings counterclockwise, the first movable contact 52 contacts the second static contact 63, and at the same time, the second movable contact 62 contacts the first static contact 53.

[0074] The following description will be made by taking the cooperation between the second pusher 72 and the second support arm 4213 as an example. Figure 7 As shown, a snap-on protrusion is provided at the end of the second arm 4213, a through hole is provided at the second pushing member 72, a stop surface is provided on the hole wall of the through hole, the end of the second arm 4213 penetrates into the through hole, the snap-on protrusion undergoes elastic deformation and passes through the through hole, the snap-on protrusion returns to its original shape and abuts against the stop surface.

[0075] The cooperation method of the second pushing member 72 and the second support arm 4213 is not limited to the above one, and the cooperation method of the second pushing member 72 and the second support arm 4213 should be understandable to technical personnel in the field, and is well known and easy to implement for technical personnel in the field, so this embodiment will not be described in detail.

[0076] It should be noted that the cooperation mode between the first pushing member 71 and the first supporting arm 4212 is the same as the cooperation mode between the second pushing member 72 and the second supporting arm 4213 , which will not be described in detail herein.

[0077] In one embodiment, see Figure 6 As shown, the pushing member connected to the auxiliary movable spring piece 12 is provided with a slot 721 ; the end of the auxiliary movable spring piece 12 close to the first contact portion 121 is limited in the slot 721 .

[0078] In this embodiment, the second pusher 72 is provided with a slot 721, and the auxiliary movable spring 12 contacts the slot wall of the slot 721. When the armature assembly 42 swings, it drives the second pusher 72 to move, so that the second pusher 72 pushes and pulls the auxiliary movable spring 12. For example, when the armature assembly 42 drives the second pusher 72 and the first pusher 71 to move and make the first movable contact 52 contact the second static contact 63, and the second movable contact 62 contacts the first static contact 53; the second pusher 72 The auxiliary movable spring 12 is driven to move toward the direction approaching the auxiliary static spring 13, and the first contact portion 121 is in contact with the second contact portion 131; when the armature assembly 42 drives the second pushing member 72 and the first pushing member 71 to move and separate the first movable contact 52 from the second static contact 63, and the second movable contact 62 from the first static contact 53, the second pushing member 72 drives the auxiliary movable spring 12 to move toward the direction away from the auxiliary static spring 13, and separates the first contact portion 121 from the second contact portion 131.

[0079] By pushing and pulling the auxiliary movable spring piece by the second pushing member 72, permanent fatigue of the auxiliary movable spring piece can be prevented, and failure of the auxiliary movable spring piece due to adhesion with the auxiliary static spring piece can be prevented.

[0080] See also Figure 6 As shown, in order to further enhance the contact reliability between the first contact portion 121 and the second contact portion 131 and prevent the pusher and the auxiliary movable spring 12 from deforming after multiple actions, resulting in unreliable contact between the auxiliary movable spring 12 and the pusher, the two groove walls of the slot 721 are provided with convex ribs 722, and the convex ribs 722 are in contact with the auxiliary movable spring 12. The contact between the convex rib 722 and the auxiliary movable spring 12 is a line-surface contact, which can concentrate the push-pull position, that is, concentrate the push-pull force point at the position where the auxiliary movable spring 12 contacts the convex rib 722, thereby ensuring the contact reliability between the convex rib 722 and the auxiliary movable spring 12, and further ensuring the reliable contact between the first contact portion 121 on the auxiliary movable spring 12 and the second contact portion 131 on the auxiliary static spring 13.

[0081] Finally, it should be noted that: it is understandable that the various embodiments / implementations provided by the present utility model can be combined with each other without causing any contradiction, and will not be illustrated one by one here.

[0082] In the embodiments of the utility model, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0083] In the description of the utility model embodiments, it needs to be understood that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front", and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model embodiments and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the utility model embodiments.

[0084] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0085] The above are only preferred embodiments of the utility model embodiments, and are not intended to limit the utility model embodiments. For those skilled in the art, the utility model embodiments may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model embodiments shall be included in the protection scope of the utility model embodiments.

Claims

1. An auxiliary switch, characterized in that: The invention comprises a mounting portion, an auxiliary movable spring and an auxiliary static spring, wherein the auxiliary movable spring and the auxiliary static spring are both mounted on the mounting portion, the auxiliary movable spring is integrally formed with a first contact portion, the auxiliary static spring is integrally formed with a second contact portion, and the auxiliary movable spring can move relative to the auxiliary static spring to make the first contact portion contact or separate from the second contact portion.

2. The auxiliary switch according to claim 1, characterized in that: The first contact portion includes at least one protrusion, and line-surface contact is formed between the protrusion and the second contact portion.

3. The auxiliary switch according to claim 2, characterized in that: The auxiliary movable spring has a first end and a second end opposite to each other, the first end is used to connect with the circuit board, and a portion of the auxiliary movable spring close to the second end is bent toward the auxiliary static spring to form the protrusion.

4. The auxiliary switch according to claim 3, characterized in that: The number of the protrusions is two, and a buffer space is provided between the two protrusions.

5. The auxiliary switch according to claim 4, characterized in that: The buffer space is a strip-shaped hole, and at least a portion of the strip-shaped hole is disposed at a position where the auxiliary movable spring piece is bent toward the auxiliary static spring piece.

6. The auxiliary switch according to any one of claims 1 to 5, characterized in that: The auxiliary movable spring is provided with a metal layer at least on a surface of the first contact portion facing the second contact portion, and the auxiliary static spring is provided with a metal layer at least on a surface of the second contact portion facing the first contact portion.

7. The auxiliary switch according to any one of claims 1 to 5, characterized in that: The second contact portion is a protrusion disposed toward the auxiliary movable spring, or a surface of the second contact portion in contact with the first contact portion and a surface of the auxiliary static spring facing the auxiliary movable spring are coplanar.

8. A relay, characterized in that: The invention comprises a housing and the auxiliary switch according to any one of claims 1 to 7, wherein the first contact portion and the second contact portion are located inside the housing, and the end of the auxiliary movable spring away from the first contact portion and the end of the auxiliary static spring away from the second contact portion are both located outside the housing.

9. The relay according to claim 8, characterized in that: It also includes a fixing frame, a contact portion and a magnetic circuit portion, wherein the fixing frame is fixedly connected to the housing; the magnetic circuit portion includes a coil assembly and a magnetic rotating member, wherein the magnetic rotating member is rotatably mounted on the fixing frame, and the coil assembly is used to drive the magnetic rotating member to swing around a set axis to drive the contact portion to move to a closed position or an open position, and to drive the auxiliary movable spring piece to move relative to the auxiliary static spring piece, so that the first contact portion is in contact with or separated from the second contact portion; The mounting portion is integrally formed with the fixing frame, and the auxiliary dynamic spring piece and the auxiliary static spring piece are both located at one end of the fixing frame in the length direction.

10. The relay according to claim 9, characterized in that: The contact part includes a first movable spring part and a second movable spring part, the first movable spring part includes a first movable spring piece, a first movable contact and a first static contact; the second movable spring part includes a second movable spring piece, a second movable contact and a second static contact, the first movable contact of the first movable spring part corresponds to the position of the second static contact of the second movable spring part, and the second movable contact of the second movable spring part corresponds to the position of the first static contact of the first movable spring part; In the closed position, the first movable contact contacts the second stationary contact, and the second movable contact contacts the first stationary contact; In the disconnected position, the first movable contact is separated from the second stationary contact, and the second movable contact is separated from the first stationary contact.

11. The relay according to claim 10, characterized in that: The magnetic rotating member comprises a fixing member, the fixing member is provided with a rotating shaft, the set axis is the axis of the rotating shaft; the fixing frame is provided with an axial hole, the rotating shaft matches the axial hole, and the fixing member has a first support arm and a second support arm; The relay further includes two pushers, the two pushers are respectively a first pusher and a second pusher; one end of the first pusher is connected to the first support arm, and the other end of the first pusher is connected to the first moving contact through the first moving spring; one end of the second pusher is connected to the second support arm, and the other end of the second pusher is connected to the second moving contact through the second moving spring; The auxiliary movable spring is connected to one of the pushers, and the pusher connected to the auxiliary movable spring can drive the auxiliary movable spring to move relative to the auxiliary static spring, wherein in the closed position, the first contact portion is in contact with the second contact portion; in the open position, the first contact portion is separated from the second contact portion.

12. The relay according to claim 11, characterized in that: The pushing member connected to the auxiliary movable spring is provided with a clamping groove; the end of the auxiliary movable spring close to the first contact portion is limited in the clamping groove.

13. The relay according to claim 12, characterized in that: Both groove walls of the clamping groove are provided with convex ribs, and the convex ribs are in contact with the auxiliary movable spring.

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