Multi-contact relay

Abstract

The invention 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] The present invention relates to the technical field of relays, and in particular to a multi-contact relay. Background Art

[0002] With the continuous expansion of the application scope of relays, relays are also developing in the direction of high load and miniaturization. In the existing multi-contact relays, multiple contacts are generally arranged on the same side of the magnetic circuit part, and a push card is used to drive the contact to be turned on or off together. The spacing between the contacts is small, and the arc extinguishing time is longer when disconnected in high-altitude areas, and they will affect each other. There are also methods of arranging multiple contacts separately on both sides of the magnetic circuit part to reduce the temperature rise. For example, Chinese patent CN2023105651722 discloses a relay, which effectively reduces the temperature rise of the entire relay by arranging two contact parts in a first direction, and two groups of moving contacts and static contacts in each contact part are arranged in the second direction. The structural design improves the reliability and service life of the relay, but it has the following defects: its length and width dimensions are large, and when four or more contact parts are arranged, in order to ensure the spacing between the two contact parts on the same side, the thickness of the base needs to be increased. The structure adopted will cause the overall volume of the relay to be larger, which is not conducive to miniaturization. Summary of the invention

[0003] In order to overcome at least one defect of the above-mentioned prior art, the present invention provides a multi-contact relay with multiple groups of contacts and a large opening distance, which improves reliability and service life, and has a small overall size and can be used for disconnecting electrical equipment in high-altitude areas.

[0004] The technical solution adopted by the present invention to solve the problem is:

[0005] A multi-contact relay comprising:

[0006] Pedestal;

[0007] The magnetic circuit part is arranged on the base;

[0008] A pusher is slidably disposed on the base along a first direction, the magnetic circuit portion is drivingly connected to the pusher, and the magnetic circuit portion drives the pusher to slide;

[0009] At least four contact parts are arranged in groups of two on opposite sides of the magnetic circuit part along the second direction, and the two contact parts located on the same side of the magnetic circuit part are arranged along the first direction. The first direction is perpendicular to the second direction. The pushing member is driven and connected to the four contact parts, and the pushing member drives the contact parts to be turned on or off.

[0010] The multi-contact relay provided by the present invention arranges four contact parts in pairs along the second direction on opposite sides of the magnetic circuit part, and arranges the two contact parts on the same side of the magnetic circuit part along the first direction, so that the arrangement direction of the contact parts on different sides is perpendicular to the sliding direction of the pusher, and the arrangement direction of the two contact parts on the same side is the same as the sliding direction of the pusher, that is, the space on both sides of the second direction of the base can be used to arrange the contact parts, so that the overall volume of the relay is reduced, and it can be ensured that there are large intervals and insulation distances between the contact parts and between the contact parts and the magnetic circuit part, so as to avoid mutual influence between different contact parts (such as temperature rise influence, arc creepage, etc.). In this way, the comprehensive performance of the relay is improved, and the reliability and service life are improved. It is also conducive to miniaturization and can be applied to the disconnection of electrical equipment in high-altitude areas.

[0011] Further, the magnetic circuit portion and the pushing member are arranged along a third direction, and the third direction is perpendicular to the first direction and also perpendicular to the second direction.

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

[0013] Furthermore, the pushing member is respectively provided with ribs on the opposite sides along the second direction, and the two ribs are clamped on the outer sides of the two opposite side walls of the mounting groove; and / or, the pushing member is also provided with a plurality 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 side wall of the mounting groove.

[0014] Furthermore, pivot grooves are respectively provided on two opposite side walls of the mounting groove along the second direction, the pivot grooves are connected with the mounting grooves, and the pivot grooves extend through the opening end of the mounting grooves. The magnetic circuit part includes an electromagnet assembly and an armature assembly. The armature assembly has two relatively arranged rotating shafts, and the rotating shafts are installed to the bottom of the pivot groove along the guiding direction of the pivot groove. A baffle bar which 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 baffle bar is reset to resist the circumference of the rotating shaft.

[0015] Furthermore, a driving groove for connecting with the magnetic circuit part is arranged in the middle of the pushing member, and two card slots are respectively arranged on opposite sides of the pushing member along the second direction, and the card slots are used to connect with the contact part. The four card slots are relatively arranged with the driving groove as the center.

[0016] Furthermore, the card slot is away from the driving slot opening in the second direction, each contact part includes a moving contact component and a stationary contact component, and 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 along the second direction, and the stationary contact component is inserted into the second side slot from the outside to the inside along the second direction.

[0017] Furthermore, the moving contact assembly includes a first laminate and a second laminate located at the end, one end of the first laminate close to the moving contact and one end of the second laminate close to the moving contact are close to each other, the other end of the first laminate away from the moving contact and the other end of the second laminate away from the moving contact are spaced apart, the first laminate and the second laminate are embedded in the slot, and the first laminate is elastically resisted against one inner side wall of the slot, and the second laminate is elastically resisted against the other inner side wall of the slot.

[0018] Furthermore, among the two contact portions located on the same side of the magnetic circuit portion, when the pusher drives one of the contact portions to be turned on, the other contact portion is turned off.

[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. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of a relay according to an embodiment of the present invention.

[0021] Figure 2 Schematic diagram of an explosion of a relay according to an embodiment of the present invention.

[0022] Figure 3 Schematic diagram of the top structure of a relay according to an embodiment of the present invention.

[0023] Figure 4 Schematic cross-sectional view of a relay according to an embodiment of the present invention.

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

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the base according to an embodiment of the present invention.

[0026] Figure 7 for Figure 6 A partial enlarged view of part B is shown.

[0027] Figure 8 Schematic diagram of the three-dimensional structure of a pushing member according to an embodiment of the present invention.

[0028] Fig. 9 It is a cross-sectional schematic diagram of the connection between the pushing member and the base according to an embodiment of the present invention.

[0029] Fig.10 for Figure 1 A partial enlarged view of part C is shown.

[0030] The meanings of the reference numerals 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. Baffle; 2. Magnetic circuit portion; 21. Electromagnet assembly; 22. Armature assembly; 221. Rotating shaft; 2211. Chamfer; 2212. Second inclined surface; 222. Toggle block; 3. Pushing member; 31. Driving slot; 32. Slot; 33. Baffle; 34. Protrusion; 4. Contact portion; 41. Moving contact assembly; 411. Moving contact point; 412. First lamination; 413. Second lamination; 42. Stationary contact assembly; 421. Stationary contact point. DETAILED DESCRIPTION

[0032] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0035] See also Figures 1 to 4 The present invention 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, wherein the magnetic circuit part 2, the pusher 3, and the contact parts 4 are all arranged on the base 1, wherein the pusher 3 is slidably arranged, the magnetic circuit part 2 is driven and connected to the pusher 3, the pusher 3 is driven and connected to the four contact parts 4, the magnetic circuit part 2 drives the pusher 3 to slide relative to the base 1, and the pusher 3 drives the contact parts 4 to be turned on or off.

[0036] In this embodiment, the pushing member 3 is slidingly arranged along the first direction, and the four contact portions 4 are arranged in groups of two on opposite sides of the magnetic circuit portion 2 along the second direction. The two contact portions 4 located on the same side of the magnetic circuit portion 2 are arranged along the first direction, and the first direction is perpendicular to the second direction. Among the two contact portions 4 located on the same side of the magnetic circuit portion 2, when the pushing member 3 drives one of the contact portions 4 to be turned on, the other contact portion 4 is disconnected, so that only one of the two contact portions 4 on a single side is turned on. When in use, only one contact portion 4 on a single side is energized, which can control the temperature rise on a single side and is better suitable for high-load usage; the magnetic circuit portion 2 and the pushing member 3 are arranged along the third direction, and the third direction 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 may also be configured to be turned on or off at the same time.

[0038] The relay of this embodiment is roughly rectangular, the sliding direction (i.e., the first direction) of the pusher 3 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 the convenience of illustration, the first direction is defined as the X direction, the second direction is defined as the Y direction, and the third direction is defined as the Z direction.

[0039] Through the above arrangement, four contact parts 4 are arranged in a matrix along the first direction and the second direction, so that the arrangement direction of the contact parts 4 on different sides is perpendicular to the sliding direction of the pusher 3, and the arrangement direction of the two contact parts 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 second direction of the base 1 can be used to arrange the contact parts 4, so that the overall volume of the relay can be reduced, and it can be ensured that there are large intervals and insulation distances between each contact part 4 and between the contact part 4 and the magnetic circuit part 2, so as to avoid mutual influence between different contact parts 4 (such as temperature rise influence, arc creepage, etc.), so as to improve the comprehensive performance of the relay, and the reliability and service life are improved, and it is conducive to miniaturization, and it can be applied to the disconnection of electrical equipment in high altitude areas. And the magnetic circuit part 2 and the pusher 3 are arranged in the third direction, so that the driving force of the pusher 3 can act on each contact part 4 more evenly, so that the contact pressure and contact stroke of each contact part 4 remain basically the same, which can improve the contact stability and further improve the comprehensive 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, where three contact parts 4 are located on one side of the magnetic circuit part 2, and the other three contact parts 4 are 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 use the magnetic circuit part 2 to separate the two groups of contact parts 4.

[0041] See also Figures 1 to 4 as well as Figure 6 In this embodiment, the base 1 has a magnetic circuit area, a first contact area 12 and a second contact area 13. A mounting groove 11 is arranged in the middle of the base 1. The mounting groove 11 can be used as a magnetic circuit area to install the magnetic circuit part 2. The mounting groove 11 is roughly rectangular. One end of the mounting groove 11 along the third direction is open. The magnetic circuit part 2 can be inserted into the mounting groove 11. The first contact area 12 and the second contact area 13 are arranged on two opposite outer sides of the mounting groove 11 along the second direction. The mounting groove 11 separates the contact areas. The two contact areas are used to arrange two groups of contact parts 4 respectively. In this way, the mounting groove 11 can be used to isolate the two groups of contact parts 4 to avoid mutual influence. The side wall of the mounting groove 11 can also effectively isolate the magnetic circuit part 2 and the contact part 4 to avoid arc creepage between the contact part 4 and the coil or wire coil lead in the magnetic circuit part 2. Specifically, the two contact parts 4 are arranged with the first contact area 12 along the first direction, and the other two contact parts 4 are arranged with the second contact area 13 along the first direction.

[0042] See also Figure 1 , Figure 5 , Figure 8 and Fig. 9The pusher 3 is slidably disposed at the opening end of the mounting groove 11 along the first direction, which can facilitate the driving connection between the magnetic circuit part 2 and the pusher 3. The push member 3 is provided with a driving groove 31, a clamping groove 32, a retaining edge 33, and a protrusion 34. The driving groove 31 is arranged in the middle of the push member 3. The driving groove 31 is used to connect with the magnetic circuit part 2. Specifically, the toggle block 222 of the armature assembly 22 can be embedded in the driving groove 31. When the electromagnet assembly 21 drives the armature assembly 22 to rotate, the toggle block 222 pushes the side wall of the driving groove 31 to drive the push member 3 to slide relative to the base 1; there are four clamping grooves 32, and the number of the clamping grooves 32 is equal to the number of the contact parts 4. The clamping grooves 32 are used to connect with the moving contact components 41 of the contact parts 4. The clamping grooves 32 are away from the opening of the driving groove 31 in the second direction. The four clamping grooves 32 are arranged in pairs on the opposite sides of the push member 3 along the second direction, that is, two of the clamping grooves 32 are arranged on one side of the push member 3, and the other two clamping grooves 32 are arranged on the other side of the push member 3. The four clamping grooves 32 are arranged in pairs on the opposite sides of the push member 3 along the second direction. That is, two of the clamping grooves 32 are arranged on one side of the push member 3, and the other two clamping grooves 32 are arranged on the other side of the push member 3. 31 is arranged relative to the center, so that the distance between each card slot 32 and the driving slot 31 is the same or basically the same, and it is convenient to control the distance between the card slot 32 and the driving slot 31 within a smaller range, so that the driving force can be more evenly transmitted to each contact part 4; there are two ribs 33, and the two ribs 33 are arranged on the opposite sides of the push member 3 along the second direction, and each rib 33 is located on the outer side of the side wall of the installation groove 11, so that the two ribs 33 are clamped on the outer sides of the two opposite side walls of the installation groove 11, which can limit the sliding trajectory of the push member 3 relative to the installation groove 11, and avoid the push member 3 from twisting and causing uneven force on the contact parts 4; the protrusion 34 can play the same role as the rib 33, and a plurality of protrusions 34 are provided and are specifically arranged on the side of the push member 3 facing the installation groove 11, and the protrusion 34 is located in the installation groove 11, and the protrusion 34 along the second direction is used to abut against the inner side of the side wall of the installation groove 11.

[0043] It should be noted that the rib 33 may also abut against the inner side of the side wall of the installation groove 11, and the protrusion 34 may also abut against the outer side of the side wall of the installation groove 11. The rib 33 and the protrusion 34 may be used alone or in combination.

[0044] In the prior art of Chinese patent CN2023105651722 cited as background technology, the distance between the force point of the push card and the magnetic circuit part 2 and the force point of the push card and one of the contact parts 4 is large, which can easily cause the two contact parts 4 to receive different contact pressures and contact strokes due to the deformation or displacement of the push card, affecting the contact stability. In the present invention, the magnetic circuit part 2 and the pusher 3 are arranged along the third direction, and the four card slots 32 are refined and arranged relatively with the drive slot 31 as the center, so that the driving force of the pusher 3 can act on each contact part 4 more evenly, which can effectively improve the contact stability, and the structure is simple, requiring only one pusher 3.

[0045] See also 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 fixed in the installation 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 installation groove 11 through the rotating shaft 221. The toggle block 222 cooperates with the driving groove 31 of the pusher 3. The armature assembly 22 is driven by the magnetic force of the electromagnet assembly 21 and can swing relative to the base 1, and then the swinging armature assembly 22 drives the pusher 3 to slide. The specific structure of the electromagnet assembly 21 and the armature assembly 22 can be any one of the existing technologies. The innovation of the present invention does not lie in the magnetic circuit part 2, so the magnetic circuit part 2 is not elaborated and specifically limited.

[0046] In addition, in other examples, the armature assembly 22 can 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 driven by the magnetic force of the electromagnet assembly 21, and then the sliding armature assembly 22 drives the pusher 3 to slide.

[0047] See also 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, and specifically, the moving contact component 41 is inserted into the card slot 32 of the pusher 3. Different from the direct plug installation method of the prior art, the moving contact component 41 and the stationary contact component 42 of the present invention are installed by side plug. Preferably, the base 1 is provided with a first side slot 14 and a second side slot 15. The first side slot 14 and the second side slot 15 are both three-sided through-shaped, with two ends opening in the third direction and an outer side opening in the second direction. Combined with the opening direction of the card slot 32, the moving contact component 41 is inserted into the first side slot 14 and the card 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 pin 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 installation is easy to be inserted into place and the outer end pins are not extended long enough, and the present solution is more convenient to assemble.

[0048] On the basis that only one contact portion 4 on a single side is energized, 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 static contact components 42, that is, along the first direction, a static contact component 42, a moving contact component 41, another moving contact component 41, and another static contact component 42 are arranged in sequence. The significance of such an arrangement is that the two moving contact components 41 are deformed and swung in the middle area, and the distance between the contact areas of the two contact portions 4 can be made larger.

[0049] See also Figure 1 and Fig.10 The static contact assembly 42 includes a static contact 421, and the dynamic contact assembly 41 includes a dynamic contact 411, a first laminate 412, and a second laminate 413. The dynamic contact 411 is used to contact and conduct or separate from the static contact 421. The first laminate 412 and the second laminate 413 are both elastic sheets and are used to be embedded in the card slot 32. The first laminate 412 and the second laminate 413 have a certain pre-pressure in the card slot 32 so as to position them and prevent them from loosening. The main part of the dynamic contact assembly 41 can be composed of a single or multiple dynamic spring sheets. The first laminate 412 can be an extension of the end of a dynamic spring sheet, or it can be an independently installed sheet located at the end of the static contact assembly 42; similarly, the second laminate 413 can be an extension of the end of a dynamic spring sheet, or it can be an independently installed sheet located at the end of the static contact assembly 42. As a specific implementable example, the main part of the moving contact assembly 41 is made of two superimposed moving spring sheets, the moving contact 411 is fixed to the two moving spring sheets, the first stack 412 is made by extending the end of one of the moving spring sheets, and the second stack 413 is an independent sheet, and one end of the second stack 413 is relatively fixed to the two moving spring sheets through a rivet in the moving contact 411.

[0050] Among them, one end of the first laminate 412 close to the moving contact 411 and one end of the second laminate 413 close to the moving contact 411 are close to each other, the other end of the first laminate 412 away from the moving contact 411 and the other end of the second laminate 413 away from the moving contact 411 are spaced apart, the first laminate 412 and the second laminate 413 are embedded in the slot 32, and the first laminate 412 and one inner side wall of the slot 32 are elastically resisted, and the second laminate 413 and the other inner side wall of the slot 32 are elastically resisted. In this way, during installation, you can first pinch the other end of the first laminate 412 and the other end of the second laminate 413, and then release them after the first laminate 412 and the second laminate 413 are embedded in the slot 32. The first laminate 412 and the second laminate 413 are reset under the action of elastic force, so that the first laminate 412 and the inner wall of the slot 32 are elastically offset, and at the same time, the second laminate 413 and the other inner wall of the slot 32 are elastically offset. The two elastically deformed laminates form a pre-pressure in the slot 32. One function is to drive the moving contact assembly 41 when the push member 3 slides and the two will not loosen. The second function is to provide a certain over-travel pressure after the moving contact 411 contacts the static contact 421.

[0051] See also Fig.10More preferably, the other end of the first laminate 412 is bent in a direction away from the other end of the second laminate 413, and the other end of the second laminate 413 is bent in a direction away from the other end of the first laminate 412. The bent portion of the first laminate 412 and the bent portion of the second laminate 413 can buckle the outer side of the slot 32. One function is to facilitate the pinching operation, and the other function is to prevent the two laminates from being pulled downward out of the slot 32 when the main part (moving spring sheet) of the moving contact component 41 is bent and deformed.

[0052] See also Figure 2 , Figures 4 to 7 The present invention also optimizes the mounting structure of the armature assembly 22 on the base 1 to achieve the purpose of quick installation. Preferably, two pivot grooves 16 are arranged on the mounting groove 11, and the two pivot grooves 16 are arranged at intervals along the second direction and are respectively arranged on two opposite side walls of the mounting groove 11. The pivot grooves 16 are connected to the mounting groove 11, and the pivot grooves 16 extend through the open end of the mounting groove 11, so that the two rotating shafts 221 of the armature assembly 22 can be moved along the guiding direction of the pivot grooves 16 (such as Figure 4 The pivot slots 16 are also provided with stop bars 17. When the rotating shaft 221 is installed in the pivot slots 16, the rotating shaft 221 can press the stop bars 17 to elastically deform until the rotating shaft 221 is installed in the bottom of the pivot slots 16, and the stop bars 17 are reset to resist the circumference of the rotating shaft 221. The rotating shaft 221 can rotate at the bottom of the pivot slots 16, but is resisted by the stop bars 17 and cannot be freely separated from the pivot slots 16. In this way, when installing the armature assembly 22, it only needs to be pressed into the pivot slots 16, and no other steps are required, which is simple and convenient.

[0053] See also Figure 7 Preferably, the pivot groove 16 includes a first section 161 and a second section 162 connected to each other, the first section 161 is close to the end of the side wall of the installation groove 11, and an inclined guide surface 1611 is also provided on the inner side of the first section 161. There are two guide surfaces 1611 and they are respectively located in the circumferential direction of the rotating shaft 221. The guide surface 1611 is used to guide the installation of the rotating shaft 221. The second section 162 penetrates the side wall along the axial direction of the rotating shaft 221. The blocking bar 17 is located in the second section 162, one end of the blocking bar 17 is connected to the first section 161, and the other end of the blocking bar 17 extends obliquely 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 be against the inclined side surface of the blocking bar 17, so that as the blocking bar 17 continues to be pushed deeper, it elastically deforms until the rotating shaft 221 breaks away from the blocking bar 17.

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

[0055] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A multi-contact relay, characterized in that: include: Base (1); A magnetic circuit portion (2) is arranged on the base (1); A pushing member (3) is slidably disposed on the base (1) along a first direction, the magnetic circuit portion (2) is drivingly connected to the pushing member (3), and the magnetic circuit portion (2) drives the pushing member (3) to slide; At least four contact portions (4) are arranged in groups of two on opposite sides of the magnetic circuit portion (2) along the second direction, and the two contact portions (4) located on the same side of the magnetic circuit portion (2) are arranged along the first direction, the first direction is perpendicular to the second direction, and the pushing member (3) is drivingly connected to the four contact portions (4), and the pushing member (3) drives the contact portions (4) to be turned on or off.

2. The multi-contact relay according to claim 1, characterized in that: The magnetic circuit portion (2) and the pushing member (3) are arranged along a third direction, and the third direction 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: A mounting groove (11) is provided in the middle of the base (1), one end of the mounting groove (11) is open along a third direction, the magnetic circuit portion (2) is installed in the mounting groove (11), the pushing member (3) is slidably arranged 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 at two opposite outer sides of the mounting groove (11) along a second direction, wherein two of the contact portions (4) are arranged with the first contact area (12) along the first direction, and the other two of the contact portions (4) are arranged with the second contact area (13) along the first direction.

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

5. The multi-contact relay according to claim 3, characterized in that: The mounting groove (11) is provided with pivot grooves (16) on two opposite side walls along the second direction, the pivot groove (16) is communicated with the mounting groove (11), and the pivot groove (16) extends through the opening end of the mounting groove (11). The magnetic circuit part (2) comprises an electromagnet assembly (21) and an armature assembly (22). The armature assembly (22) has two rotating shafts (221) arranged opposite to each other. The rotating shaft (221) is installed to the bottom of the pivot groove (16) along the guiding direction of the pivot groove (16). A blocking bar (17) which can be elastically deformed by the pressing of 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 blocking bar (17) is reset to resist the circumference of the rotating shaft (221).

6. The multi-contact relay according to claim 1, characterized in that: A driving groove (31) for connecting to the magnetic circuit portion (2) is arranged in the middle of the pushing member (3), and two clamping grooves (32) are respectively arranged on opposite sides of the pushing member (3) along the second direction, and the clamping grooves (32) are used to connect to the contact portion (4). The four clamping grooves (32) are relatively arranged with the driving groove (31) as the center.

7. The multi-contact relay according to claim 6, characterized in that: The card slot (32) opens away from the drive slot (31) in the second direction, each of the contact portions (4) comprises 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 card 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.

8. The multi-contact relay according to claim 7, characterized in that: The moving contact assembly (41) comprises a first laminate (412) and a second laminate (413) located at the end, wherein one end of the first laminate (412) close to the moving contact (411) and one end of the second laminate (413) close to the moving contact (411) are close to each other, and the other end of the first laminate (412) away from the moving contact (411) and the other end of the second laminate (413) away from the moving contact (411) are spaced apart, and the first laminate (412) and the second laminate (413) are embedded in the slot (32), and the first laminate (412) and an inner side wall of the slot (32) are elastically resisted, and the second laminate (413) and the other inner side wall of the slot (32) are elastically resisted.

9. The multi-contact relay according to any one of claims 1 to 8, characterized in that: Among the two contact parts (4) located on the same side of the magnetic circuit part (2), when the pushing member (3) drives one of the contact parts (4) to be turned on, the other contact part (4) is turned off.

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

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