Multi-contact relay

Abstract

The utility model discloses a multi-contact relay. The multi-contact relay comprises a base; the magnetic circuit part is arranged on the base; the pushing piece is slidably arranged on the base in the first direction, the magnetic circuit part is in driving connection with the pushing piece, and the magnetic circuit part drives the pushing piece to slide; the at least four contact parts are arranged on the two opposite sides of the magnetic circuit part in the second direction in pairs, the two contact parts located on the same side of the magnetic circuit part are arranged in the first direction, the first direction is perpendicular to the second direction, the pushing piece is in driving connection with the four contact parts, and the pushing piece drives the contact parts to be connected or disconnected. In the relay, multiple groups of contacts are arranged, the opening distance is large, the reliability is improved, the service life is prolonged, the overall size is small, and the relay can be suitable for on-off of electrical equipment in high-altitude areas.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, and in particular to a multi-contact relay. Background Technology

[0002] As the application scope of relays continues to expand, relays are also developing towards higher load capacity and miniaturization. In existing multi-contact relays, multiple contacts are generally arranged on the same side of the magnetic circuit section, and are driven to open or close together by a pusher. The spacing between contacts is small, resulting in longer arc extinguishing time when disconnecting at high altitudes, and mutual interference. Some relays also employ a design where multiple contacts are arranged separately on both sides of the magnetic circuit section to reduce temperature rise. For example, Chinese patent CN2023105651722 discloses a relay with two contact parts spaced apart in the first direction, and two sets of moving and stationary contacts in each contact part arranged in the second direction. This design effectively reduces the overall temperature rise of the relay and improves its reliability and service life. However, it has the following drawbacks: its length and width dimensions are relatively large, and when four or more contact parts are arranged, the thickness of the base needs to be increased to ensure the spacing between the two contact parts on the same side. This structure results in a large overall size of the relay, which is not conducive to miniaturization. Utility Model Content

[0003] In order to overcome at least one of the defects of the prior art, the present invention provides a multi-contact relay with multiple sets of contacts and a large opening distance, which improves reliability and service life, and has a small overall size, making it suitable for the switching of electrical equipment in high-altitude areas.

[0004] The technical solution adopted by this utility model to solve its problem is:

[0005] A multi-contact relay, comprising:

[0006] Base;

[0007] The magnetic circuit is located on the base;

[0008] A pusher is slidably disposed on a base along a first direction, and a magnetic circuit is driven to connect the pusher, which in turn drives the pusher to slide.

[0009] At least four contact portions are arranged in pairs along the second direction on opposite sides of the magnetic circuit portion. Two contact portions on the same side of the magnetic circuit portion are arranged along the first direction, which is perpendicular to the second direction. The pusher is driven to connect with the four contact portions, and the pusher drives the contact portions to conduct or disconnect.

[0010] The multi-contact relay provided by this utility model arranges four contact parts in pairs along the second direction on opposite sides of the magnetic circuit part, and arranges two contact parts on the same side of the magnetic circuit part along the first direction. The arrangement direction of the contact parts on different sides is perpendicular to the sliding direction of the pusher, while the arrangement direction of the two contact parts on the same side is the same as the sliding direction of the pusher. This allows the space on both sides of the base in the second direction to be used to arrange the contact parts, reducing the overall size of the relay. It also ensures that there is a large gap and insulation distance between each contact part and between the contact part and the magnetic circuit part, avoiding mutual influence between different contact parts (such as temperature rise, electric arc creep, etc.). In this way, the overall performance of the relay is improved, the reliability and service life are enhanced, and it is conducive to miniaturization. It can be used for the switching of electrical equipment in high-altitude areas.

[0011] Furthermore, the magnetic circuit portion and the pusher are arranged along a third direction, which is perpendicular to the first direction and also perpendicular to the second direction.

[0012] Furthermore, the base has a mounting groove in the middle, with one end of the mounting groove open along a third direction. The magnetic circuit part is installed in the mounting groove, and the pusher is slidably disposed at the open end of the mounting groove along a first direction. The base also has a first contact area and a second contact area, which are arranged on two opposite outer sides of the mounting groove along a second direction. The first contact area is arranged along the first direction in two contact parts, and the second contact area is arranged along the first direction in two other contact parts.

[0013] Furthermore, the pusher is provided with baffles on opposite sides along the second direction, and the two baffles are clamped on the outer sides of the two opposite sidewalls of the mounting groove; and / or, the pusher is also provided with a number of protrusions on the side facing the mounting groove, the protrusions are located in the mounting groove, and the protrusions along the second direction are used to abut against the inner side of the sidewall of the mounting groove.

[0014] Furthermore, the mounting groove is provided with pivot grooves on two opposite sidewalls along the second direction. The pivot grooves are connected to the mounting groove and extend through to the opening end of the mounting groove. The magnetic circuit part includes an electromagnet assembly and an armature assembly. The armature assembly has two oppositely arranged rotating shafts. The rotating shafts are installed to the bottom of the pivot groove along the guiding direction of the pivot groove. A stop bar that can be elastically deformed by the pressure of the rotating shaft is also provided at the pivot groove. When the rotating shaft is installed to the bottom of the pivot groove, the stop bar is reset and abuts against the circumference of the rotating shaft.

[0015] Furthermore, the middle of the pusher is provided with a drive groove for connecting with the magnetic circuit part, and two slots are provided on opposite sides of the pusher along the second direction. The slots are used to connect with the contact part, and the four slots are arranged relative to each other with the drive groove as the center.

[0016] Furthermore, the card slot is located away from the drive slot opening in the second direction. Each contact part includes a moving contact component and a stationary contact component. A first side slot and a second side slot are provided on the base. The moving contact component is inserted into the first side slot and the card slot from the outside to the inside in the second direction. The stationary contact component is inserted into the second side slot from the outside to the inside in the second direction.

[0017] Furthermore, the movable contact assembly includes a first stack and a second stack located at the end. The end of the first stack near the movable contact and the end of the second stack near the movable contact are close together, while the other end of the first stack away from the movable contact and the other end of the second stack away from the movable contact are spaced apart. The first stack and the second stack are embedded in the slot, and the first stack is elastically abutted against one inner wall of the slot, and the second stack is elastically abutted against the other inner wall of the slot.

[0018] Furthermore, in the two contact portions located on the same side of the magnetic circuit portion, when the pusher drives one contact portion to conduct, the other contact portion disconnects.

[0019] Furthermore, each contact portion includes a moving contact component and a stationary contact component, and in the two contact portions located on the same side of the magnetic circuit portion, the two moving contact components are located between the two stationary contact components. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the relay according to an embodiment of the present utility model.

[0021] Figure 2 This is an exploded view of the relay according to an embodiment of the present invention.

[0022] Figure 3 This is a top view of the relay structure according to an embodiment of the present invention.

[0023] Figure 4 This is a cross-sectional view of a relay according to an embodiment of the present utility model.

[0024] Figure 5 for Figure 4 The enlarged view of part A shown.

[0025] Figure 6 This is a three-dimensional structural diagram of the base according to an embodiment of the present utility model.

[0026] Figure 7 for Figure 6 The enlarged view of part B shown.

[0027] Figure 8 This is a three-dimensional structural diagram of the pusher component according to an embodiment of the present utility model.

[0028] Figure 9This is a cross-sectional schematic diagram showing the connection between the pusher and the base in an embodiment of the present invention.

[0029] Figure 10 for Figure 1 The enlarged view of part C shown.

[0030] The meanings of the reference numerals in the attached figures are as follows:

[0031] 1. Base; 11. Mounting slot; 12. First contact area; 13. Second contact area; 14. First side slot; 15. Second side slot; 16. Pivot slot; 161. First section; 1611. Guide surface; 162. Second section; 17. Stop bar; 2. Magnetic circuit part; 21. Electromagnet assembly; 22. Armature assembly; 221. Rotating shaft; 2211. Chamfer; 2212. Second bevel; 222. Actuating block; 3. Pushing component; 31. Drive slot; 32. Slot; 33. Edge; 34. Protrusion; 4. Contact part; 41. Moving contact assembly; 411. Moving contact; 412. First stacked plate; 413. Second stacked plate; 42. Stationary contact assembly; 421. Stationary contact. Detailed Implementation

[0032] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0033] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0035] See Figures 1 to 4This utility model discloses a multi-contact relay, which can be specifically a magnetic latching relay, including: a base 1, a magnetic circuit part 2, a pusher 3, and four contact parts 4. The magnetic circuit part 2, the pusher 3, and the contact parts 4 are all disposed on the base 1. The pusher 3 is slidably disposed. The magnetic circuit part 2 is driven to be connected to the pusher 3. The pusher 3 is driven to be connected to the four contact parts 4. The magnetic circuit part 2 drives the pusher 3 to slide relative to the base 1. The pusher 3 drives the contact parts 4 to be connected or disconnected.

[0036] In this embodiment, the pusher 3 is slidably disposed along the first direction, and the four contact portions 4 are arranged in pairs along the second direction on opposite sides of the magnetic circuit portion 2. The two contact portions 4 located on the same side of the magnetic circuit portion 2 are arranged along the first direction, which is perpendicular to the second direction. When the pusher 3 drives one of the contact portions 4 to conduct, the other contact portion 4 is disconnected, so that only one of the two contact portions 4 on one side is conducting. During use, only one contact portion 4 on one side is energized, which can control the temperature rise on one side and is better suited for high-load applications. The magnetic circuit portion 2 and the pusher 3 are arranged along a third direction, which is perpendicular to the first direction and also perpendicular to the second direction.

[0037] Of course, in other examples, the two contact portions 4 on one side can also be configured to be simultaneously on or off.

[0038] In this embodiment, the relay is generally rectangular in shape. The sliding direction of the pushing member 3 (i.e., the first direction) is generally the same as the length direction of the relay, the second direction is generally the same as the thickness direction of the relay, and the third direction is generally the same as the height direction of the relay. For ease of illustration in the accompanying drawings, the first direction is defined as the X direction, the second direction as the Y direction, and the third direction as the Z direction.

[0039] With the above arrangement, the four contact portions 4 are arranged in a matrix along the first and second directions, so that the arrangement direction of the contact portions 4 on different sides is perpendicular to the sliding direction of the pusher 3, while the arrangement direction of the two contact portions 4 on the same side is the same as the sliding direction of the pusher 3. That is, the space on both sides of the base 1 in the second direction can be used to arrange the contact portions 4, so that the overall size of the relay is reduced. At the same time, it can ensure that there is a large gap and insulation distance between each contact portion 4 and between the contact portion 4 and the magnetic circuit portion 2, avoiding mutual influence between different contact portions 4 (such as temperature rise, arc creep, etc.). In this way, the overall performance of the relay is improved, the reliability and service life are improved, and it is also conducive to miniaturization, making it suitable for the switching of electrical equipment in high-altitude areas. Furthermore, by combining the magnetic circuit portion 2 and the pusher 3 with the arrangement along the third direction, the driving force of the pusher 3 can be applied to each contact portion 4 more evenly, so that the contact pressure and contact stroke of each contact portion 4 remain basically the same, which can improve contact stability and further improve the overall performance of the relay.

[0040] It is understandable that the number of contact parts 4 can also be other numbers, such as six contact parts 4, which are also divided into two groups, with three contact parts 4 located on one side of the magnetic circuit part 2 and the other three contact parts 4 located on the other side of the magnetic circuit part 2, so as to make full use of the length space of the relay to arrange the contact parts 4 on the same side, and to use the magnetic circuit part 2 to separate the two groups of contact parts 4.

[0041] See Figures 1 to 4 as well as Figure 6 In this embodiment, the base 1 has a magnetic circuit region, a first contact region 12, and a second contact region 13. A mounting groove 11 is provided in the middle of the base 1. The mounting groove 11 can be used as a magnetic circuit region to install the magnetic circuit part 2. The mounting groove 11 is generally rectangular and has an opening at one end along a third direction. The magnetic circuit part 2 can be inserted into the mounting groove 11. The first contact region 12 and the second contact region 13 are arranged on two opposite outer sides of the mounting groove 11 along a second direction. The mounting groove 11 separates the contact regions. The two contact regions are used to arrange two sets of contact parts 4 respectively. In this way, the mounting groove 11 can isolate the two sets of contact parts 4 to avoid mutual interference. The sidewall of the mounting groove 11 can also effectively isolate the magnetic circuit part 2 and the contact parts 4 to avoid arc creep between the contact parts 4 and the coil or wire coil lead in the magnetic circuit part 2. Specifically, the first contact region 12 is arranged along the first direction for the two contact parts 4, and the second contact region 13 is arranged along the first direction for the other two contact parts 4.

[0042] See Figure 1 , Figure 5 , Figure 8 and Figure 9The pusher 3 is slidably disposed at the opening end of the mounting groove 11 along the first direction, which facilitates the drive connection between the magnetic circuit part 2 and the pusher 3. The pusher 3 is provided with a drive groove 31, a slot 32, a stop 33, and a protrusion 34. The drive groove 31 is located in the middle of the pusher 3 and is used to connect with the magnetic circuit part 2. Specifically, the actuating block 222 of the armature assembly 22 can be fitted into the drive groove 31. When the electromagnet assembly 21 drives the armature assembly 22 to rotate, the actuating block 222 pushes against the side wall of the drive groove 31 to drive the pusher 3 to slide relative to the base 1. There are four slots 32, and the number of slots 32 is equal to the number of contact parts 4. The slots 32 are used to connect with the moving contact assembly 41 of the contact part 4. The slots 32 are away from the opening of the drive groove 31 in the second direction. The four slots 32 are arranged in pairs along the second direction on opposite sides of the pusher 3. That is, one side of the pusher 3 has two slots 32, and the other side of the pusher 3 has two more slots 32. The four slots 32 are connected to the drive groove 31. The 31 are arranged in a centrally opposite manner, so that the distance between each slot 32 and the drive slot 31 is the same or basically the same, and it is convenient to control the distance between the slot 32 and the drive slot 31 within a small range, so that the driving force can be transmitted to each contact part 4 more evenly; there are two baffles 33, which are arranged on opposite sides of the pusher 3 along the second direction, and each baffle 33 is located on the outer side of the side wall of the mounting slot 11, so that the two baffles 33 are clamped on the outer side of the two opposite side walls of the mounting slot 11, which can limit the sliding trajectory of the pusher 3 relative to the mounting slot 11, and avoid the pusher 3 from twisting, which would cause uneven force on each contact part 4; the protrusion 34 can play the same role as the baffle 33. There are several protrusions 34 and they are specifically arranged on the side of the pusher 3 facing the mounting slot 11. The protrusions 34 are located inside the mounting slot 11, and the protrusions 34 along the second direction are used to abut against the inner side of the side wall of the mounting slot 11.

[0043] It should be noted that the retaining edge 33 can also abut against the inner side of the side wall of the mounting groove 11; the protrusion 34 can also abut against the outer side of the side wall of the mounting groove 11. The retaining edge 33 and the protrusion 34 can be used individually or in combination.

[0044] In the prior art described in Chinese patent CN2023105651722 cited in the background section, the distance between the force-bearing point of the push card and the magnetic circuit part 2 and the force-bearing point of the push card and one of the contact parts 4 is relatively large. This makes it easy for the two contact parts 4 to receive different contact pressures and contact strokes due to deformation or displacement of the push card under force, thus affecting contact stability. In this utility model, the magnetic circuit part 2 and the pusher 3 are arranged along a third direction, and the four card slots 32 are refined and arranged relative to each other with the drive slot 31 as the center. This allows the driving force of the pusher 3 to act more evenly on each contact part 4, which can effectively improve contact stability. Moreover, the structure is simple and only one pusher 3 is required.

[0045] See Figures 1 to 4 In this embodiment, the magnetic circuit part 2 includes an electromagnet assembly 21 and an armature assembly 22. The electromagnet assembly 21 is fixedly installed in the mounting groove 11. The armature assembly 22 has a toggle block 222 and a rotating shaft 221. The armature assembly 22 is pivotally connected to the mounting groove 11 via the rotating shaft 221. The toggle block 222 cooperates with the drive groove 31 of the pusher 3. The armature assembly 22 is driven by the magnetic force of the electromagnet assembly 21 to swing relative to the base 1, thereby driving the pusher 3 to slide by the swinging armature assembly 22. The specific structure of the electromagnet assembly 21 and the armature assembly 22 can be any of the existing technologies. The innovation of this utility model does not lie in the magnetic circuit part 2, therefore, the magnetic circuit part 2 is not described in detail or specifically limited.

[0046] In other examples, the armature assembly 22 may also be slidably disposed on the base 1 along the first direction, so that the armature assembly 22 can slide relative to the base 1 by being driven by the magnetic force of the electromagnet assembly 21, and then the sliding armature assembly 22 can drive the pusher 3 to slide.

[0047] See Figure 1 , Figure 2 and Figure 6 In this embodiment, the contact portion 4 includes a moving contact component 41 and a stationary contact component 42. The moving contact component 41 is connected to the pusher 3, specifically, the moving contact component 41 is inserted into the slot 32 of the pusher 3. Unlike the direct insertion method of the prior art, the moving contact component 41 and the stationary contact component 42 of this utility model adopt a side insertion installation. Preferably, the base 1 is provided with a first side slot 14 and a second side slot 15. Both the first side slot 14 and the second side slot 15 are three-sided through-holes, with two openings in the third direction and an outer opening in the second direction. Combined with the opening orientation of the slot 32, the moving contact component 41 is inserted into the first side slot 14 and the slot 32 from the outside to the inside along the second direction, and the stationary contact component 42 is inserted into the second side slot 15 from the outside to the inside along the second direction. In this way, the extension length of each end of the moving contact component 41 and the stationary contact component 42 exposed on the lower surface of the base 1 can be ensured, which solves the problem that the existing direct plug-in installation is prone to improper insertion, resulting in insufficient extension length of the outer end. Moreover, this solution is more convenient to assemble.

[0048] Based on the premise that only one contact portion 4 is energized on one side, in order to better provide deformation space for the two moving contact components 41, preferably, in the two contact portions 4 located on the same side of the magnetic circuit portion 2, the two moving contact components 41 are located between the two stationary contact components 42. That is, along the first direction, one stationary contact component 42, one moving contact component 41, another moving contact component 41, and another stationary contact component 42 are arranged in sequence. The significance of this arrangement is that both moving contact components 41 deform and swing in the middle area, and the distance between the contact points of the two contact portions 4 can be made larger.

[0049] See Figure 1 and Figure 10 The stationary contact assembly 42 includes a stationary contact 421, and the moving contact assembly 41 includes a moving contact 411, a first stacked piece 412, and a second stacked piece 413. The moving contact 411 is used to make contact with the stationary contact 421 to conduct electricity or to separate and disconnect. The first stacked piece 412 and the second stacked piece 413 are both elastic pieces and are used to be embedded in the slot 32. The first stacked piece 412 and the second stacked piece 413 have a certain pre-pressure in the slot 32 to ensure that they are positioned and do not loosen. The main body of the moving contact assembly 41 can be composed of one or more moving springs. The first stacked piece 412 can be an extension of the end of a moving spring or an independently mounted piece located at the end of the stationary contact assembly 42. Similarly, the second stacked piece 413 can be an extension of the end of a moving spring or an independently mounted piece located at the end of the stationary contact assembly 42. As a concrete and implementable example, the main body of the moving contact assembly 41 is made of two moving springs stacked together, the moving contact 411 is fixed to the two moving springs, the first stack 412 is made by extending the end of one of the moving springs, and the second stack 413 is an independent piece, one end of the second stack 413 is fixed to the two moving springs together with the moving contact 411 by a rivet.

[0050] In this configuration, the end of the first stacked piece 412 near the moving contact 411 and the end of the second stacked piece 413 near the moving contact 411 are close together, while the other end of the first stacked piece 412 away from the moving contact 411 and the other end of the second stacked piece 413 away from the moving contact 411 are spaced apart. The first stacked piece 412 and the second stacked piece 413 are embedded in the slot 32, and the first stacked piece 412 is elastically abutted against one inner wall of the slot 32, while the second stacked piece 413 is elastically abutted against the other inner wall of the slot 32. Thus, during installation, the other end of the first stack 412 and the other end of the second stack 413 can be pinched first. After the first stack 412 and the second stack 413 are inserted into the slot 32, they are released. The first stack 412 and the second stack 413 are reset under the action of elasticity, so that the first stack 412 is elastically opposed to one inner wall of the slot 32, and at the same time, the second stack 413 is elastically opposed to the other inner wall of the slot 32. The two stacks of elastic deformation form a pre-pressure in the slot 32. One function is that when the pusher 3 slides, it can drive the moving contact component 41 and the two will not be loose. The other function is that it can provide a certain overtravel pressure after the moving contact 411 contacts the stationary contact 421.

[0051] See Figure 10Preferably, the other end of the first stack 412 is bent away from the other end of the second stack 413, and the other end of the second stack 413 is bent away from the other end of the first stack 412. The bent portions of the first stack 412 and the second stack 413 can fasten to the outside of the slot 32. One function is to facilitate the pinching operation, and the other function is to prevent the two stacks from being pulled downward out of the slot 32 when the main body of the moving contact component 41 (moving spring) is bent and deformed.

[0052] See Figure 2 , Figures 4 to 7 This invention also optimizes the mounting structure of the armature assembly 22 on the base 1 to achieve rapid installation. Preferably, the mounting groove 11 is provided with two pivot grooves 16, which are arranged at intervals along the second direction and respectively provided on two opposite side walls of the mounting groove 11. The pivot grooves 16 communicate with the mounting groove 11 and extend through to the opening end of the mounting groove 11, so that the two rotating shafts 221 of the armature assembly 22 can move along the guiding direction of the pivot groove 16 (e.g., ...). Figure 4 The shaft 221 (as shown from top to bottom) is installed at the bottom of the two pivot slots 16. A stop bar 17 is also provided at each pivot slot 16. During the installation of the shaft 221 into the pivot slot 16, the shaft 221 can elastically deform against the stop bar 17 until it reaches the bottom of the pivot slot 16. At this point, the shaft 221 disengages from the stop bar 17, and the stop bar 17 returns to its original position, abutting against the circumference of the shaft 221. The shaft 221 can then rotate at the bottom of the pivot slot 16, but is prevented from freely disengaging from the pivot slot 16 by the stop bar 17. Thus, when installing the armature assembly 22, it only needs to be pressed into the pivot slot 16 without any other steps, making it simple and convenient.

[0053] See Figure 7 Preferably, the pivot groove 16 includes a first section 161 and a second section 162 connected to each other. The end of the first section 161 is close to the side wall of the mounting groove 11. An inclined guide surface 1611 is also provided on the inner side of the first section 161. There are two guide surfaces 1611, which are located around the circumference of the rotating shaft 221. The guide surfaces 1611 are used to guide the insertion of the rotating shaft 221. The second section 162 passes through the side wall along the axial direction of the rotating shaft 221. A stop bar 17 is located in the second section 162. One end of the stop bar 17 is connected to the first section 161. The other end of the stop bar 17 extends inclinedly toward the bottom of the pivot groove 16. When the rotating shaft 221 is installed into the second section 162, the end of the rotating shaft 221 can abut against the inclined side of the stop bar 17, so that as it continues to penetrate, it pushes the stop bar 17 to elastically deform until the rotating shaft 221 disengages from the stop bar 17.

[0054] Combined Figure 5The end edge of the rotating shaft 221 is provided with a rounded corner, and the end of the rotating shaft 221 is provided with a second inclined surface 2212. Both the rounded corner and the second inclined surface 2212 can be used to abut against the stop bar 17 to avoid generating chips.

[0055] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A multi-contact relay, characterized in that, include: Base (1); The magnetic circuit part (2) is disposed on the base (1); A pusher (3) is slidably disposed on the base (1) along a first direction. The magnetic circuit part (2) is drivenly connected to the pusher (3), and the magnetic circuit part (2) drives the pusher (3) to slide. At least four contact portions (4) are arranged in pairs along a second direction on opposite sides of the magnetic circuit portion (2). Two contact portions (4) located on the same side of the magnetic circuit portion (2) are arranged along a first direction, which is perpendicular to the second direction. The pusher (3) is driven to connect with the four contact portions (4), and the pusher (3) drives the contact portions (4) to conduct or disconnect.

2. The multi-contact relay according to claim 1, characterized in that, The magnetic circuit portion (2) and the pusher (3) are arranged along a third direction, which is perpendicular to the first direction and also perpendicular to the second direction.

3. The multi-contact relay according to claim 2, characterized in that, The base (1) has a mounting groove (11) in the middle, and the mounting groove (11) is open at one end along a third direction. The magnetic circuit part (2) is installed in the mounting groove (11). The pusher (3) is slidably disposed at the open end of the mounting groove (11) along a first direction. The base (1) also has a first contact area (12) and a second contact area (13). The first contact area (12) and the second contact area (13) are arranged on two opposite outer sides of the mounting groove (11) along a second direction. Two of the contact parts (4) are arranged along the first direction to form the first contact area (12), and the other two contact parts (4) are arranged along the first direction to form the second contact area (13).

4. The multi-contact relay according to claim 3, characterized in that, The pusher (3) is provided with baffles (33) on opposite sides along the second direction, and the two baffles (33) are clamped on the outer sides of the two opposite sidewalls of the mounting groove (11); and / or, the pusher (3) is provided with a plurality of protrusions (34) on the side facing the mounting groove (11), the protrusions (34) are located in the mounting groove (11), and the protrusions (34) along the second direction are used to abut against the inner side of the sidewall of the mounting groove (11).

5. The multi-contact relay according to claim 3, characterized in that, The mounting groove (11) has two opposite sidewalls along the second direction with pivot grooves (16) respectively. The pivot grooves (16) are connected to the mounting groove (11) and extend through to the opening end of the mounting groove (11). The magnetic circuit part (2) includes an electromagnet assembly (21) and an armature assembly (22). The armature assembly (22) has two oppositely arranged rotating shafts (221). The rotating shafts (221) are installed to the bottom of the pivot groove (16) along the guiding direction of the pivot groove (16). A stop bar (17) that can be elastically deformed by the rotating shaft (221) is also provided at the pivot groove (16). When the rotating shaft (221) is installed to the bottom of the pivot groove (16), the stop bar (17) is reset and abuts against the circumference of the rotating shaft (221).

6. The multi-contact relay according to claim 1, characterized in that, The pusher (3) has a drive groove (31) in the middle for connecting with the magnetic circuit part (2). The pusher (3) has two slots (32) on opposite sides along the second direction. The slots (32) are used to connect with the contact part (4). The four slots (32) are arranged opposite to each other with the drive groove (31) as the center.

7. The multi-contact relay according to claim 6, characterized in that, The slot (32) is located away from the opening of the drive slot (31) in the second direction. Each contact portion (4) includes a moving contact component (41) and a stationary contact component (42). The base (1) is provided with a first side slot (14) and a second side slot (15). The moving contact component (41) is inserted into the first side slot (14) and the slot (32) from the outside to the inside in the second direction. The stationary contact component (42) is inserted into the second side slot (15) from the outside to the inside in the second direction.

8. The multi-contact relay according to claim 7, characterized in that, The movable contact assembly (41) includes a first stack (412) and a second stack (413) located at the ends. The end of the first stack (412) near the movable contact (411) and the end of the second stack (413) near the movable contact (411) are close together. The other end of the first stack (412) away from the movable contact (411) and the other end of the second stack (413) away from the movable contact (411) are spaced apart. The first stack (412) and the second stack (413) are embedded in the slot (32), and the first stack (412) elastically abuts against one inner wall of the slot (32), and the second stack (413) elastically abuts against the other inner wall of the slot (32).

9. The multi-contact relay according to any one of claims 1 to 8, characterized in that, In the two contact portions (4) located on the same side of the magnetic circuit portion (2), when the pusher (3) drives one of the contact portions (4) to be turned on, the other contact portion (4) is turned off.

10. The multi-contact relay according to claim 9, characterized in that, Each of the contact portions (4) includes a moving contact component (41) and a stationary contact component (42). In the two contact portions (4) located on the same side of the magnetic circuit portion (2), the two moving contact components (41) are located between the two stationary contact components (42).

Images