relay

Abstract

To provide a relay that includes a pair of fixed contact lead-out ends, a movable contact point assembly, a push rod assembly, and a rotation prevention structure.SOLUTION: The movable contact point assembly includes a movable contact point. Both ends of the movable contact point are contacted or separated from a pair of fixed contact lead-out ends. The movable contact point assembly has a first side face and a second side face. The push rod assembly includes a contact point bracket. The contact point bracket has a first side wall and a second side wall. The first side wall corresponds to the first side face, and the second side wall corresponds to the second side face. The rotation prevention structure includes a first rotation prevention member and a second rotation prevention member. The first rotation prevention member is disposed between the first side wall and the first side face. The second rotation prevention member is disposed between the second side wall and the second side face.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present application relates to the technical field of electronic control devices, and particularly relates to relays.

Background Art

[0002] A relay is an electronic control device, which comprises a control system (also called an input circuit) and a controlled system (also called an output circuit), and is usually applied in automatic control circuits. A relay is actually an "automatic switch" that controls a large current with a small current. Therefore, it plays roles of automatic adjustment, safety protection, circuit conversion and the like in circuits.

[0003] A high-voltage DC relay is a type of relay. The high-voltage DC relay in the prior art comprises a pair of fixed contact lead-out ends, a movable assembly, a coil unit and a magnetic circuit part. The movable assembly comprises a movable contact assembly, a push rod assembly and an elastic assembly, and the movable contact assembly is mounted on the push rod assembly via the elastic assembly. The magnetic circuit part comprises a fixed iron core and a movable iron core, the fixed iron core is fixedly arranged on the relay, and the movable iron core is connected to the push rod assembly. When the coil unit is energized, the fixed iron core generates a magnetic attraction force and attracts the movable iron core to move, so as to move the push rod assembly together with the movable contact assembly, thereby realizing closing of the contacts.

[0004] However, during the relay's operation, the movable contact assembly tends to rotate around the axis of the push rod relative to the push rod, generating greater metallic noise due to contact friction between the movable contact assembly and the contact bracket of the push rod assembly. Furthermore, the friction loss between the movable contact assembly and the contact bracket increases the deflection angle of the movable contact assembly, further affecting the contact position between the movable contact assembly and the fixed contact lead end, resulting in unstable contact resistance. In addition, friction between the movable contact assembly and the contact bracket easily generates metal particles, and after these metal particles fall onto the contact surface, the contact resistance increases, making it easier for the relay to lose conductivity. [Overview of the project]

[0005] The embodiments of this application provide a relay that solves the problem of the movable contact assembly in the prior art being prone to rotation.

[0006] The relay according to the embodiment of the present application is A pair of fixed contact leads, A movable contact assembly including a movable contact, A push rod assembly including a contact bracket, A rotation prevention structure including a first rotation prevention member and a second rotation prevention member, The two ends of the movable contact along the first direction are in contact with or separated from a pair of fixed contact lead-out ends, the first direction being the direction in which the pair of fixed contact lead-out ends are arranged, the movable contact assembly having a first side and a second side provided opposite to each other along a third direction, the direction of movement of the movable contact is defined as the second direction, and the first direction, the second direction and the third direction are orthogonal to each other. The contact bracket has a first side wall and a second side wall provided opposite to each other along the third direction, the first side wall corresponding to the first side surface, and the second side wall corresponding to the second side surface. The first anti-rotation member is provided between the first side wall and the first side surface, and the second anti-rotation member is provided between the second side wall and the second side surface.

[0007] According to some embodiments of the present application, both the first anti-rotation member and the second anti-rotation member are sheet structures made from a flexible material. The first side wall has a first inner surface facing the movable contact assembly, and the first anti-rotation member is attached to the first inner surface or the first side surface; the second side wall has a second inner surface facing the movable contact assembly, and the second anti-rotation member is attached to the second inner surface or the second side surface.

[0008] According to some embodiments of the present application, both the first anti-rotation member and the second anti-rotation member are elastic sheets. The first anti-rotation member is pressed between the first side wall and the first side surface of the movable contact assembly, providing a first elastic force to the movable contact assembly; the second anti-rotation member is pressed between the second side wall and the second side surface of the movable contact assembly, providing a second elastic force to the movable contact assembly; The directions of the first elastic force and the second elastic force are opposite.

[0009] According to some embodiments of the present application, the first anti-rotation member and the second anti-rotation member both include a connecting portion and an elastic sheet portion, The two connecting portions are connected to the first side wall and the second side wall, respectively, and the two elastic sheet portions extend from the two connecting portions away from the fixed contact lead end, and the two elastic sheet portions provide the movable contact assembly with a first elastic force and a second elastic force, respectively.

[0010] According to some embodiments of the present application, the connecting portion of the first anti-rotation member is crimped to a first inner surface of the first side wall facing the movable contact assembly, and the connecting portion of the second anti-rotation member is crimped to a second inner surface of the second side wall facing the movable contact assembly.

[0011] According to some embodiments of the present application, the first side wall is provided with a first opening, and the second side wall is provided with a second opening. Each of the aforementioned connecting parts includes a hanging hook, and the hanging hooks of the two connecting parts are hung on the lower edge of the first opening and the lower edge of the second opening, respectively.

[0012] According to some embodiments of the present application, the first side wall is provided with a first opening, and the second side wall is provided with a second opening. Each of the aforementioned connecting portions includes an engaging structure, and the engaging structures of the two connecting portions are engaged within the first opening and the second opening, respectively.

[0013] According to some embodiments of the present application, the first side wall is further provided with a first connection hole, and the second side wall is further provided with a second connection hole, Each of the connecting portions further includes a projection, the projections of the two connecting portions each enter into the first connecting hole and the second connecting hole, and are interlocked into the first connecting hole and the second connecting hole, respectively.

[0014] According to some embodiments of the present application, both the first side wall and the second side wall are provided with a protruding claw. Each of the connecting portions includes a collar, and the collars of the two connecting portions are fitted onto the outer circumference of the protruding claw of the first side wall and the outer circumference of the protruding claw of the second side wall, respectively.

[0015] According to some embodiments of the present application, the anti-rotation structure further includes a transition member, One end of the first anti-rotation member and one end of the second anti-rotation member are integrally connected to both ends of the transition member along the third direction.

[0016] According to some embodiments of the present application, the transition member has a central hole, The relay further includes an elastic assembly, the elastic assembly being connected to the movable contact assembly and the push rod assembly, and the elastic assembly providing contact pressure to the movable contact assembly. The elastic assembly is drilled into the central hole.

[0017] According to some embodiments of the present application, the anti-rotation structure further includes a transition member, One end of the first anti-rotation member and one end of the second anti-rotation member are integrally connected to both ends of the transition member along the third direction, The transition member is fixedly connected to the movable contact assembly.

[0018] According to some embodiments of the present application, the movable contact assembly further includes a second magnetic conductor, the second magnetic conductor being fixedly connected to the side of the movable contact facing away from the fixed contact lead-out end, The transition member is fixedly connected to the second magnetic conductor.

[0019] According to some embodiments of the present application, the anti-rotation structure further includes a transition member, One end of the first anti-rotation member and one end of the second anti-rotation member are integrally connected to both ends of the transition member along the third direction, The push rod assembly further includes a stopper wall, the two ends of the stopper wall along the third direction being connected to the first side wall and the second side wall, respectively. The transition member is fixedly connected to the stopper wall.

[0020] According to some embodiments of the present application, the relay further includes a first magnetic conductor, and the first magnetic conductor is provided on a side of the movable contact assembly facing the fixed contact lead-out end, the transition member is provided between the stopper wall and the first magnetic conductor, and is fixedly connected to the stopper wall and the first magnetic conductor.

[0021] According to some embodiments of the present application, the first rotation-preventing member is integrally connected to the first side wall, and the second rotation-preventing member is integrally connected to the second side wall.

[0022] According to some embodiments of the present application, the push rod assembly further includes a rod portion and a base connected to one axial end of the rod portion, the contact bracket further includes a bottom wall, both ends of the bottom wall along the third direction are integrally connected to one end of the first side wall and one end of the second side wall respectively, the contact bracket, the rod portion and the base are connected by injection molding, and the base covers the bottom wall and one end of the first side wall and the second side wall, the push rod assembly further includes a stopper wall, the stopper wall is connected to the other end of the first side wall and the other end of the second side wall, and the stopper wall is provided on a side of the movable contact assembly facing the fixed contact lead-out end.

[0023] According to some embodiments of the present application, the push rod assembly further includes a rod portion and a base connected to one axial end of the rod portion, the contact bracket further includes a top wall, both ends of the top wall along the third direction are integrally connected to one end of the first side wall and one end of the second side wall respectively, the other end of the first side wall and the other end of the second side wall are respectively engaged with the base.

[0024] According to some embodiments of the present application, the relay further includes a first magnetic conductor, the first magnetic conductor being provided on the side of the movable contact assembly toward the fixed contact lead-out end, The movable contact assembly includes a plurality of movable contacts and a plurality of second conductors, the plurality of movable contacts arranged in a line along the third direction, the plurality of second conductors fixedly connected one-to-one on the side of the plurality of movable contacts facing away from the fixed contact lead-out ends, and each second conductor forms a conductor circuit with the first conductor. Here, the two outermost second magnetic conductors in the plurality of second magnetic conductors each have the first side surface and the second side surface.

[0025] According to some embodiments of the present application, throughout the entire process of movement of the push rod assembly, the first anti-rotation member is always in contact with the first side wall and the first side surface, and the second anti-rotation member is always in contact with the second side wall and the second side surface.

[0026] According to some embodiments of the present application, the first anti-rotation member and / or the second anti-rotation member are provided with slots.

[0027] One embodiment of the present invention described above has at least the following advantages or beneficial effects.

[0028] According to the relay embodiment of the present application, the first anti-rotation member is provided between the first side wall and the first side surface, and the second anti-rotation member is provided between the second side wall and the second side surface. As a result, when the movable contact assembly rotates with respect to the axis of the push rod, the first anti-rotation member and / or the second anti-rotation member can contact the movable contact assembly along the third direction. This causes the movable contact assembly to be sandwiched between the first anti-rotation member and the second anti-rotation member, avoiding metallic noise due to contact friction between the movable contact assembly and the first and second side walls, significantly reducing the risk of metal particle generation due to friction between the movable contact assembly and the contact bracket, ensuring the reliability of the relay product's operation, further reducing the range of rotation of the movable contact assembly around the axis of the push rod, and further ensuring the consistency of the contact position between the movable contact assembly and the fixed contact lead end, thereby guaranteeing stable contact resistance. [Brief explanation of the drawing]

[0029] [Figure 1] This is a schematic diagram of a relay disassembled according to one exemplary embodiment. [Figure 2] This is a schematic plan view of a seal unit according to one exemplary embodiment. [Figure 3] This is a cross-sectional view along the AA cutting line in Figure 2, where the movable contact assembly and the fixed contact lead end are not in contact. [Figure 4] This is a cross-sectional view along the BB cutting line in Figure 2, where the movable contact assembly and the fixed contact lead end are not in contact. [Figure 5] This is a cross-sectional view along the AA cutting line in Figure 2, where the movable contact assembly and the fixed contact lead end are in contact. [Figure 6] This is a cross-sectional view along the BB cutting line in Figure 2, where the movable contact assembly and the fixed contact lead end are in contact. [Figure 7] This is a schematic side view of a movable assembly according to a first exemplary embodiment. [Figure 8]This is a cross-sectional view along the CC cutting line in Figure 7. [Figure 9] This is a schematic side view of a movable assembly according to a second exemplary embodiment. [Figure 10] This is a cross-sectional view along the DD cutting line in Figure 9. [Figure 11] This is a schematic side view of a movable assembly according to a third exemplary embodiment. [Figure 12] This is a cross-sectional view along the EE cutting line in Figure 11. [Figure 13] Figure 11 is a schematic perspective view of the first anti-rotation member. [Figure 14] This is a magnified view of location X1 in Figure 12. [Figure 15] This is a schematic side view of a movable assembly according to a fourth exemplary embodiment. [Figure 16] This is a cross-sectional view along the FF cutting line in Figure 15. [Figure 17] Figure 15 is a schematic perspective view of the anti-rotation structure. [Figure 18] This is a schematic perspective view of an anti-rotation structure of another embodiment of a movable assembly according to a fourth exemplary embodiment. [Figure 19] This is a schematic perspective view of an anti-rotation structure of another embodiment of the movable assembly according to the fourth exemplary embodiment. [Figure 20] This is a schematic side view of a movable assembly according to a fifth exemplary embodiment. [Figure 21] This is a cross-sectional view along the GG cutting line in Figure 20. [Figure 22] Figure 20 is a schematic perspective view of the anti-rotation structure. [Figure 23] This is a schematic perspective view of an anti-rotation structure of another embodiment of a movable assembly according to a fifth exemplary embodiment. [Figure 24] This is a schematic perspective view of an anti-rotation structure of another embodiment of the movable assembly according to the fifth exemplary embodiment. [Figure 25] This is a schematic side view of a movable assembly according to a sixth exemplary embodiment. [Figure 26] This is a cross-sectional view along the HH cutting line in Figure 25. [Figure 27] Figure 25 is a schematic perspective view of the anti-rotation structure. [Figure 28] This is a magnified view of the two X locations in Figure 26. [Figure 29] This is a schematic perspective view of an anti-rotation structure of another embodiment of a movable assembly according to the sixth exemplary embodiment. [Figure 30] This is a schematic side view of a movable assembly according to a seventh exemplary embodiment. [Figure 31] This is a schematic perspective view of a movable assembly according to a seventh exemplary embodiment. [Figure 32] Figure 30 is a schematic perspective view of the anti-rotation structure. [Figure 33] This is a schematic side view of a movable assembly according to an eighth exemplary embodiment. [Figure 34] This is a cross-sectional view along line II in Figure 33. [Figure 35] Figure 33 is a schematic perspective view of the anti-rotation structure. [Figure 36] This is a schematic side view of a movable assembly according to a ninth exemplary embodiment. [Figure 37] This is a cross-sectional view along the JJ cutting line in Figure 36. [Figure 38] Figure 36 is a schematic perspective view of the anti-rotation structure. [Figure 39] This is a schematic side view of a movable assembly according to a tenth exemplary embodiment. [Figure 40] This is a cross-sectional view along the KK cutting line in Figure 39. [Figure 41] Figure 39 is a schematic perspective view of the anti-rotation structure. [Figure 42] This is a schematic perspective view showing how a contact bracket in a movable assembly according to an eleventh exemplary embodiment is integrally connected to an anti-rotation structure. [Figure 43] This is a schematic perspective view showing how a contact bracket in a movable assembly according to a twelfth exemplary embodiment is integrally connected to an anti-rotation structure. [Modes for carrying out the invention]

[0030] Next, exemplary embodiments will be described in more detail with reference to the drawings. However, exemplary embodiments can be carried out in various forms and should not be understood as being limited to the embodiments described herein. On the contrary, these embodiments are provided to ensure that the present application is comprehensive and complete and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures and therefore a detailed description is omitted.

[0031] As shown in Figure 1, the relay 1 according to the embodiment of the present invention includes a housing 10, a coil unit 20, an arc extinguishing unit 30, and a seal unit 40. The seal unit 40 is provided inside the housing 10, and the top of the fixed contact lead-out end of the seal unit 40 is exposed to the outer surface of the housing 10 through an exposed hole 11a of the housing 10. Both the coil unit 20 and the arc extinguishing unit 30 are provided inside the housing 10.

[0032] It should be understood that the terms “including,” “having,” and any variations thereof in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device comprising a series of steps or units may, at their discretion, include, but are not limited to, steps or units not listed, or at their discretion, other steps or components specific to these processes, methods, products, or devices.

[0033] As an example, the housing 10 includes a first case 11 and a second case 12, the first case 11 being connected to the second case 12 to form a chamber for housing a coil unit 20, an arc extinguishing unit 30, and a seal unit 40. In the embodiment of the present application, the exposed hole 11a is provided in the first case 11.

[0034] The arc extinguishing unit 30 is for extinguishing the arc generated between the fixed contact lead-out end of the seal unit 40 and the movable contact.

[0035] As an example, the arc extinguishing unit 30 includes two arc extinguishing magnets 31. The arc extinguishing magnets 31 may be permanent magnets, and each arc extinguishing magnet 31 may be substantially rectangular parallelepiped in shape. The two arc extinguishing magnets 31 are provided on both sides of the seal unit 40 and are positioned opposite each other along the longitudinal direction of the movable contact.

[0036] By providing two opposing arc-extinguishing magnets 31, a magnetic field can be formed around the fixed contact lead-out end and the movable contact. As a result, the arc generated between the fixed contact lead-out end and the movable contact is stretched in a direction away from each other by the action of the magnetic field, thereby extinguishing the arc.

[0037] The arc extinguishing unit 30 further includes two yoke clamps 32 positioned corresponding to the locations of the two arc extinguishing magnets 31. The two yoke clamps 32 surround the seal unit 40 and the two arc extinguishing magnets 31. This design, in which the yoke clamps 32 surround the arc extinguishing magnets 31, prevents the magnetic field from the arc extinguishing magnets 31 from diffusing to the outside and affecting the arc extinguishing effect. The yoke clamps 32 are made of a soft magnetic material. Examples of soft magnetic materials include, but are not limited to, iron, cobalt, nickel, and their alloys.

[0038] As shown in Figures 2 to 6, the seal unit 40 includes a contact container 1000, a pair of fixed contact lead-out ends 2000, a movable assembly 3000, and a magnetic circuit section 4000.

[0039] The contact container 1000 is a stationary member for housing the contact assembly and is a device having a chamber with a case as its main component. The contact container 1000 may also be composed of multiple components connected in a predetermined assembly method.

[0040] The contact container 1000 has a contact chamber 1001 inside. The contact container 1000 may include an insulating cover 1100 and a yoke plate 1200, the insulating cover 1100 covering one side of the yoke plate 1200, and the insulating cover 1100 and the yoke plate 1200 together form the contact chamber 1001.

[0041] The insulating cover 1100 includes a ceramic cover 1110 and a flange member 1120. The ceramic cover 1110 is connected to the yoke plate 1200 via the flange member 1120. The flange member 1120 may be a metal part forming an annular structure, such as an iron-nickel alloy, and one end of the flange member 1120 is connected to the opening edge of the ceramic cover 1110 by laser welding, brazing, resistance welding, adhesive bonding, etc. The other end of the flange member 1120 may similarly be connected to the yoke plate 1200 by laser welding, brazing, resistance welding, adhesive bonding, etc. The flange member 1120 is provided between the ceramic cover 1110 and the yoke plate 1200, making it easy to connect the ceramic cover 1110 and the yoke plate 1200.

[0042] The contact container 1000 further has a pair of first through holes 1002, the first through holes 1002 communicating with the contact chamber 1001. The first through holes 1002 are used to drill fixed contact lead-out ends 2000. In the embodiment of the present application, the first through holes 1002 are provided in the ceramic cover 1110.

[0043] A pair of fixed contact leads 2000 are connected to the ceramic cover 1110 of the contact container 1000, and at least a portion of each fixed contact lead 2000 is located within the contact chamber 1001. One of the pair of fixed contact leads 2000 functions as a terminal into which current flows, and the other as a terminal into which current flows.

[0044] A pair of fixed contact lead-outs 2000 are drilled one-to-one into a pair of first through-holes 1002 and are connected to the ceramic cover 1110, for example, by welding.

[0045] The bottom of the fixed contact lead-out end 2000 is designated as a fixed contact, and the fixed contact may be provided integrally with or separately from the bottom of the fixed contact lead-out end 2000.

[0046] Referring to Figures 3 to 6, the movable assembly 3000 includes a movable contact assembly 3100, a push rod assembly 3200, and an elastic assembly 3300. The movable contact assembly 3100 is housed within the insulating cover 1100 and is attached to the push rod assembly 3200 via the elastic assembly 3300. Both ends of the movable contact assembly 3100 along a first direction D1 are in contact with or separated from a pair of fixed contact lead-out ends 2000, where the first direction D1 is the direction in which the pair of fixed contact lead-out ends 2000 are arranged.

[0047] If we consider the pair of fixed contact leads 2000 and the one movable contact assembly 3100 as one combination, the relay according to the embodiment of the present application may include multiple combinations.

[0048] The movable contact assembly 3100 may include a movable contact 3110, the ends of which, along a first direction D1, are in contact with or separated from a pair of fixed contact lead-out ends 2000.

[0049] The number of movable contacts 3110 may be one or more.

[0050] Each movable contact 3110 may include a movable contact body and movable contacts provided at both ends of the movable contact body. The movable contacts may be separate components and may be connected to the movable contact body. Of course, the movable contacts may also be molded integrally with the movable contact body.

[0051] In the embodiment of the present application, the movable contact assembly 3100 includes two movable contacts 3110 arranged side by side. One end of each of the two movable contacts 3110 is in contact with or separated from a fixed contact of one fixed contact lead-out end 2000, and the other end of each of the two movable contacts 3110 is in contact with or separated from a fixed contact of the other fixed contact lead-out end 2000. Furthermore, one end of each of the two movable contacts 3110 forms two contact points with one fixed contact lead-out end 2000, and the other end of each of the two movable contacts 3110 forms two contact points with the other fixed contact lead-out end 2000.

[0052] In other embodiments, the number of movable contacts 3110 may be one, three, four, five, or the like.

[0053] The movable contact assembly 3100 includes a plurality of movable contacts 3110, and both ends of the plurality of movable contacts 3110 along the first direction D1 are in contact with or separated from a pair of fixed contact leads. Since the plurality of movable contacts 3110 are not restricted from each other, a reliable parallel circuit is formed when both ends of the plurality of movable contacts 3110 along the first direction D1 are in contact with a pair of fixed contact leads 2000. The number of contacts formed by the plurality of movable contacts 3110 and one fixed contact lead 2000 is two or more, achieving the effect of current division. Furthermore, based on the principle that the magnitude of the electric repulsion force is proportional to the square of the current, the magnitude of the electric repulsion force of each contact is significantly reduced, which is advantageous for improving short-circuit resistance and improving the reliability of the relay.

[0054] Furthermore, the movable contact assembly 3100 may further include a second magnetic conductor 6200, which is fixedly connected to the side of the movable contact 3110 facing away from the fixed contact lead-out end 2000. The operation of the second magnetic conductor 6200 will be described below.

[0055] Here, the number of movable contacts 3110 and second conductors 6200 included in the movable contact assembly 3100 corresponds to the number of second conductors 6200. Specifically, if there is one movable contact 3110, there is also one second conductor 6200. If there are multiple movable contacts 3110 (including two), there are also multiple second conductors 6200. Multiple second conductors 6200 are fixedly connected one-to-one on the side of the multiple movable contacts 3110 that faces away from the fixed contact lead-out ends 2000.

[0056] As shown in Figures 3 to 6, the direction of movement of the movable contact 3110 is defined as the second direction D2, and the direction perpendicular to the first direction D1 and the second direction D2 is defined as the third direction D3. The push rod assembly 3200 includes a push rod 3210, a contact bracket 3220, and a stopper wall 3230. The push rod 3210 includes a base 3211 and a rod portion 3212, the base 3211 being connected to one end of the rod portion 3212 in the axial direction. The contact bracket 3220 includes a bottom wall 3221, a first side wall 3222a, and a second side wall 3222b, the first side wall 3222a and the second side wall 3222b being arranged opposite each other along the third direction D3. One end of the first side wall 3222a and the second side wall 3222b are integrally connected to both sides of the bottom wall 3221 along the third direction D3, and the other ends of the first side wall 3222a and the second side wall 3222b are connected to the stopper wall 3230. The stopper wall 3230 is provided on the side of the movable contact assembly 3100 facing the fixed contact lead-out end 2000. The movable contact assembly 3100 is mounted in the space enclosed by the contact bracket 3220 and the base 3211 via an elastic assembly 3300.

[0057] The first side wall 3222a has a first opening 3228, and the second side wall 3222b has a second opening 3229. Both ends of the stopper wall 3230 along the third direction D3 are locked into the first opening 3228 and the second opening 3229, respectively.

[0058] Here, the contact bracket 3220, the rod portion 3212, and the base 3211 are connected by injection molding, and the base 3211 covers the bottom wall 3221 and one end of the first side wall 3222a and one end of the second side wall 3222b.

[0059] In other embodiments, both ends of the stopper wall 3230 may be integrally connected to the first side wall 3222a and the second side wall 3222b, respectively.

[0060] The elastic assembly 3300 is provided between the movable contact assembly 3100 and the base 3211, and applies an elastic force to the movable contact assembly 3100, which moves toward the stopper wall 3230, thereby providing contact pressure.

[0061] Furthermore, it is understood that the elastic assembly 3300 can flexibly support the movable contact assembly 3100 and provide contact pressure.

[0062] If there are multiple movable contacts 3110, the multiple movable contacts 3110 are arranged in a line along the third direction D3.

[0063] Referring to Figures 3 to 6, the yoke plate 1200 has a second through-hole 1210, which penetrates two opposing sides of the yoke plate 1200 along the thickness direction of the yoke plate 1200 and communicates with the contact chamber 1001 of the contact container 1000. The rod portion 3212 is movably drilled in the second through-hole 1210 along the axial direction. The base 3211 at one end of the rod portion 3212 in the axial direction is provided inside the contact chamber 1001.

[0064] The seal unit 40 further includes a metal cover 5000, which is connected to the side of the yoke plate 1200 facing away from the insulating cover 1100, and the metal cover 5000 covers the second through-hole 1210 of the yoke plate 1200. The metal cover 5000 and the yoke plate 1200 are enclosed as a chamber for housing the fixed core 4300 and the movable core 4400 of the magnetic circuit section 4000.

[0065] Referring back to Figure 1, the coil unit 20 includes a coil bobbin 21 and a coil 22, the coil bobbin 21 being hollow cylindrical and formed using insulating material. The metal cover 5000 is drilled into the coil bobbin 21. The coil 22 surrounds the coil bobbin 21.

[0066] As shown in Figures 3 to 6, the magnetic circuit section 4000 includes a fixed core 4300, a movable core 4400, and a reset member 4500. The fixed core 4300 is fixedly provided within the metal cover 5000, and a portion of the fixed core 4300 enters the second through hole 1210. The fixed core 4300 has a through hole 4310, which is provided corresponding to the position of the second through hole 1210 and is used to drill the rod section 3212. The movable core 4400 is movably provided within the metal cover 5000 and is provided opposite the fixed core 4300 along the axial direction of the rod section 3212. The movable core 4400 is connected to the rod section 3212 and is attracted to the fixed core 4300 when the coil 22 is energized. The movable core 4400 and the rod portion 3212 can be connected by screwing, crimping, welding, or other methods.

[0067] The reset member 4500 is located inside the metal cover 5000 and is provided between the fixed core 4300 and the movable core 4400. When the power supply to the coil 22 is cut off, it is used to reset the movable core 4400. The reset member 4500 may be a spring and may be fitted onto the outside of the rod portion 3212.

[0068] When the coil 22 is energized, the fixed core 4300 attracts the movable core 4400 and moves it upward, and the movable core 4400 can drive the push rod assembly 3200 upward via the rod portion 3212. When the movable contact 3110 contacts the fixed contact lead end 2000, the movable contact 3110 is abutted against the fixed contact lead end 2000, but the rod portion 3212 and base 3211 continue to move upward until they have completed their overtravel.

[0069] During the overtravel process, the base 3211 presses against the elastic assembly 3300, and after being pressed, the elastic assembly 3300 can provide elastic force to the movable contact assembly 3100 to provide contact pressure.

[0070] Referring to Figures 4 and 6, the relay 1 further includes a first magnetic conductor 6100, which is fixedly connected to one side of the stopper wall 3230 facing the movable contact assembly 3100, and the first magnetic conductor 6100 is located on the side of the movable contact assembly 3100 facing the fixed contact lead-out end 2000.

[0071] Furthermore, when the movable contact 3110 is energized, the first magnetic conductor 6100 is magnetized, thereby creating an attractive force on the movable contact 3110 in the direction of contact closure. This attractive force resists the electric repulsive force caused by the short-circuit current between the movable contact 3110 and the fixed contact lead-out end 2000, preventing the movable contact 3110 and the fixed contact lead-out end 2000 from breaking apart, thus achieving the objective of preventing short circuits.

[0072] Here, if the movable contact assembly 3100 includes a plurality of movable contacts 3110 arranged in a row, the number of first conductors 6100 may be multiple, and the number of first conductors 6100 corresponds to the number of movable contacts 3110, and each of the multiple first conductors 6100 is located on the side of the plurality of movable contacts 3110 toward the fixed contact lead-out end 2000.

[0073] Of course, in other embodiments, if the movable contact assembly 3100 includes a plurality of movable contacts 3110 arranged side by side, the number of first magnetic conductors 6100 may be one, and this first magnetic conductor 6100 is arranged across the plurality of movable contacts 3110 in the third direction D3.

[0074] Furthermore, if the movable contact assembly 3100 includes a movable contact 3110 and a second magnetic conductor 6200, the second magnetic conductor 6200 is fixedly connected to the side of the movable contact 3110 that faces away from the fixed contact lead-out end 2000. The second magnetic conductor 6200 forms a magnetic circuit with the first magnetic conductor 6100.

[0075] Here, the number of second magnetic conductors 6200 corresponds to the number of movable contacts 3110. In the embodiment of the present application, the number of second magnetic conductors 6200 is two, but is not limited to these. The two second magnetic conductors 6200 are fixedly connected to the sides of the two movable contacts 3110 that are facing away from the fixed contact lead-out ends 2000.

[0076] When both ends of the movable contact 3110 are in contact with a pair of fixed contact leads 2000, current flows through the movable contact 3110, forming a magnetic circuit surrounding the movable contact 3110 between the first conductor 6100 and the second conductor 6200. When a short-circuit current passes through the movable contact 3110, an attractive force is generated between the first conductor 6100 and the second conductor 6200 along the direction of the contact pressure. This attractive force resists the electric repulsive force caused by the short-circuit current between the movable contact 3110 and the fixed contact leads 2000, preventing the movable contact 3110 from breaking off the fixed contact leads 2000.

[0077] The first magnetic conductor 6100 and the second magnetic conductor 6200 may have a straight-line structure or a U-shaped structure. The first magnetic conductor 6100 and the second magnetic conductor 6200 can be manufactured using soft magnetic materials such as iron, cobalt, nickel, and their alloys.

[0078] In another embodiment, the first magnetic conductor 6100 may be fixedly mounted to the contact container 1000 without being attached to the stopper wall 3230 of the push rod assembly 3200. In this way, the attractive force that resists short circuits is transmitted to the contact container 1000, and since the contact container 1000 is a stationary member, excessive coil holding force is not required, further reducing the power consumption of the relay coil and the volume of the relay 1, and improving the short-circuit resistance.

[0079] In a specific embodiment, the first magnetic conductor 6100 may be fixedly connected to the ceramic cover 1110 of the contact container 1000.

[0080] In another specific embodiment, the first magnetic conductor 6100 is also fixedly provided within the contact container 1000 by a fixed bracket (not shown). Specifically, this fixed bracket is provided within the contact container 1000 and fixedly connected to the yoke plate 1200, and the first magnetic conductor 6100 is fixedly connected to the fixed bracket.

[0081] In yet another embodiment, the distance between the first conductor 6100 and the second conductor 6200 can be designed to be variable. Specifically, the distance between the first conductor 6100 and the second conductor 6200 can be adjusted according to the magnitude of the current value, and the magnitude of the magnetic attractive force generated between the first conductor 6100 and the second conductor 6200 can be changed to satisfy not only the requirement for short-circuit protection but also the requirement for overload protection.

[0082] Selectively, the first magnetic conductor 6100 can include multiple stacked magnetic conductors. The overall thickness of the first magnetic conductor 6100 can be increased by increasing the number of thin magnetic conductors. Because the magnetic conductors are relatively thin and can be made from thin, strip-shaped material, material costs are low and handling is easy. Furthermore, the number of magnetic conductors can be flexibly adjusted according to the magnitude of the short-circuit current.

[0083] Referring to Figures 4 and 6, the movable contact assembly 3100 has a first side surface 3100a and a second side surface 3100b that are opposite each other along the third direction D3. The first side surface 3100a corresponds to the first side wall 3222a of the contact bracket 3220, and the second side surface 3100b corresponds to the second side wall 3222b of the contact bracket 3220.

[0084] If the movable contact assembly 3100 includes a plurality of movable contacts 3110 and a plurality of second magnetic conductors 6200, the two outermost second magnetic conductors 6200 each have a first side surface 3100a and a second side surface 3100b.

[0085] In other embodiments, if the movable contact assembly 3100 includes only a plurality of movable contacts 3110, the two outermost movable contacts 3110 have a first side surface 3100a and a second side surface 3100b, respectively.

[0086] As shown in Figures 7 and 8, the relay 1 according to the embodiment of the present application further includes a rotation prevention structure 300, the rotation prevention structure 300 includes a first rotation prevention member 310 and a second rotation prevention member 320, the first rotation prevention member 310 being provided between a first side wall 3222a and a first side surface 3100a, and the second rotation prevention member 320 being provided between a second side wall 3222b and a second side surface 3100b.

[0087] According to the relay 1 of the embodiment of the present application, the first anti-rotation member 310 is provided between the first side wall 3222a and the first side surface 3100a, and the second anti-rotation member 320 is provided between the second side wall 3222b and the second side surface 3100b. As a result, when the movable contact assembly 3100 rotates with respect to the axis of the push rod, the first anti-rotation member 310 and / or the second anti-rotation member 320 can come into contact with the movable contact assembly 3100 along the third direction D3, thereby allowing the movable contact assembly 3100 to come into contact with the first anti-rotation member 310 and the second The movable contact assembly 3100 is sandwiched between the rotation prevention member 320 and the first side wall 3222a and the second side wall 3222b, avoiding metallic noise due to contact friction between the movable contact assembly 3100 and the contact bracket 3220, significantly reducing the risk of metal particle generation due to friction between the movable contact assembly 3100 and the contact bracket 3220, ensuring the reliability of the operation of the relay 1 product, reducing the range of rotation of the movable contact assembly 3100 around the axis of the push rod relative to the push rod, and further ensuring the consistency of the contact position between the movable contact assembly 3100 and the fixed contact lead end 2000, thereby guaranteeing stable contact resistance.

[0088] As shown in Figure 8, in the first embodiment of the present application, both the first anti-rotation member 310 and the second anti-rotation member 320 are sheet structures made of a flexible material. The first side wall 3222a has a first inner surface 3223 facing the movable contact assembly 3100, and the first anti-rotation member 310 is attached to the first inner surface 3223 or the first surface 3100a. The second side wall 3222b has a second inner surface 3225 facing the movable contact assembly 3100, and the second anti-rotation member 320 is attached to the second inner surface 3225 or the second surface 3100b.

[0089] In one embodiment, the flexible material may be a non-metallic material such as rubber or abrasion-resistant plastic, but is not limited to these.

[0090] Here, the first anti-rotation member 310 may be attached to the first inner surface 3223 or the first side surface 3100a by a connection method such as welding or adhesive, and the second anti-rotation member 320 may be attached to the second inner surface 3225 or the second side surface 3100b by a connection method such as welding or adhesive.

[0091] In the embodiment of the present application, both the first anti-rotation member 310 and the second anti-rotation member 320 are manufactured from a flexible material, thereby reducing wear of the first anti-rotation member 310 and the second anti-rotation member 320 against the movable contact assembly 3100, and reducing the frictional force between the first anti-rotation member 310 and the first side surface 3100a and the frictional force between the second anti-rotation member 320 and the second side surface 3100b, thereby avoiding affecting the overtravel process. Furthermore, the flexible material reduces the deflection force of the movable contact assembly 3100 against the contact bracket 3220, thereby reducing the range of rotation of the movable contact assembly 3100 and reducing frictional resistance and noise due to mutual friction between the movable contact assembly 3100 and the contact bracket 3220.

[0092] Of course, in other embodiments, the first anti-rotation member 310 may be connected to the first side surface 3100a, and the second anti-rotation member 320 may be connected to the second side surface 3100b.

[0093] Furthermore, throughout the entire movement of the push rod assembly 3200, the first anti-rotation member 310 is always in contact with the first side wall 3222a and the first side surface 3100a, and the second anti-rotation member 320 is always in contact with the second side wall 3222b and the second side surface 3100b. Specifically, before the movable contact 3110 contacts the fixed contact lead-out end 2000, the first anti-rotation member 310 is in contact with the first side wall 3222a and the first side surface 3100a, and the second anti-rotation member 320 is in contact with the second side wall 3222b and the second side surface 3100b. In the initial stage of overtravel (i.e., immediately after the movable contact 3110 contacts the fixed contact lead-out end 2000), the first anti-rotation member 310 abuts between the first side wall 3222a and the first side surface 3100a, and the second anti-rotation member 320 abuts between the second side wall 3222b and the second side surface 3100b. In the final stage of overtravel (i.e., when the movable core 4400 contacts the fixed core 4300), the first anti-rotation member 310 still abuts between the first side wall 3222a and the first side surface 3100a, and the second anti-rotation member 320 still abuts between the second side wall 3222b and the second side surface 3100b. Furthermore, at any position between the initial and final stages of overtravel, the first anti-rotation member 310 abuts between the first side wall 3222a and the first side surface 3100a, and the second anti-rotation member 320 abuts between the second side wall 3222b and the second side surface 3100b. In this way, the movable contact assembly 3100 maintains stability throughout the entire process of movement of the movable assembly 3000, and the amount by which the movable contact assembly 3100 rotates relative to the push rod around the axis of the push rod can be reduced.

[0094] As shown in Figures 9 and 10, the movable assembly 3000 according to the second embodiment of the present application is similar to the movable assembly 3000 according to the first embodiment, and therefore its description will be omitted. The differences are as follows.

[0095] The contact bracket 3220 of the push rod assembly 3200 is inverted U-shaped and includes a top wall 3227 and two side walls (the two side walls correspond to the first side wall 3222a and the second side wall 3222b in the first embodiment described above), with one end of each side wall integrally connected to both sides of the top wall 3227 along the third direction D3, and the other ends of each side wall engaging with the base 3211.

[0096] As shown in Figures 11 to 14, the movable assembly 3000 according to the third embodiment of this application is similar to the movable assembly 3000 according to the first embodiment, and therefore its features will not be explained. However, the differences are as follows.

[0097] The first anti-rotation member 310 and the second anti-rotation member 320 are both elastic sheets. The first anti-rotation member 310 is pressed between the first side wall 3222a and the first side surface 3100a of the movable contact assembly 3100, providing the movable contact assembly 3100 with a first elastic force. The second anti-rotation member 320 is pressed between the second side wall 3222b and the second side surface 3100b of the movable contact assembly 3100, providing the movable contact assembly 3100 with a second elastic force. The directions of the first and second elastic forces are opposite.

[0098] In the embodiment of the present application, both the first anti-rotation member 310 and the second anti-rotation member 320 are elastic sheets, and the elastic force provided by the elastic sheets absorbs the amount of deflection of the movable contact assembly 3100, reduces the deflection force between the movable contact assembly 3100 and the first side wall 3222a and the second side wall 3222b of the contact bracket 3220, and reduces the frictional resistance and frictional noise between the movable contact assembly 3100 and the contact bracket 3220.

[0099] As shown in Figures 12 to 14, the first anti-rotation member 310 and the second anti-rotation member 320 both include a connecting portion 330 and an elastic sheet portion 340. The two connecting portions 330 are connected to the first side wall 3222a and the second side wall 3222b, respectively, and the two elastic sheet portions 340 each extend away from the two connecting portions 330 in a direction away from the fixed contact lead-out end 2000, and the two elastic sheet portions 340 each provide a first elastic force and a second elastic force to the movable contact assembly 3100.

[0100] The connecting portion 330 includes hanging hooks 331, the two hanging hooks 331 which are hung on the lower edge of the first opening 3228 and the lower edge of the second opening 3229, respectively.

[0101] As shown in Figures 15 to 17, the movable assembly 3000 according to the fourth embodiment of this application is similar to the movable assembly 3000 according to the third embodiment, and therefore its description will be omitted. However, the differences are as follows.

[0102] The anti-rotation structure 300 further includes a transition member 360, the first anti-rotation member 310 and the second anti-rotation member 320 being integrally connected to both ends of the transition member 360 along the third direction D3. The transition member 360 has a central hole 361, and an elastic assembly 3300 is drilled in the central hole 361.

[0103] In the embodiment of the present invention, the anti-rotation structure 300 further includes a transition member 360, which is integrally connected to the first anti-rotation member 310 and the second anti-rotation member 320 via the transition member 360, thereby improving the structural strength of the anti-rotation structure 300 and preventing the first anti-rotation member 310 and the second anti-rotation member 320 from oscillating.

[0104] As shown in Figure 18, in another embodiment, both the first anti-rotation member 310 and the second anti-rotation member 320 of the anti-rotation structure 300 are provided with slots 350. Here, the direction of extension of the slots 350 is substantially parallel to the second direction D2.

[0105] As shown in Figure 19, in yet another embodiment, the first anti-rotation member 310 and the second anti-rotation member 320 of the anti-rotation structure 300 are both provided with slots 350. Here, the extending direction of the slots 350 is inclined with respect to the second direction D2.

[0106] In the embodiment of the present invention, by providing slots 350 in the first anti-rotation member 310 and the second anti-rotation member 320, the flexibility of the first anti-rotation member 310 and the second anti-rotation member 320 is improved, and the elastic force of the first anti-rotation member 310 and the second anti-rotation member 320 is reduced, thereby enabling better absorption of the deflection force of the movable contact assembly 3100. On the other hand, wear on the movable contact assembly 3100 due to the high rigidity of the first anti-rotation member 310 and the second anti-rotation member 320 can be avoided.

[0107] As shown in Figures 20 to 22, the movable assembly 3000 according to the fifth embodiment of this application is similar to the movable assembly 3000 according to the fourth embodiment, and therefore its description will be omitted. However, the differences are as follows.

[0108] Each connecting portion 330 includes an engaging structure 332, and the engaging structures 332 of the two connecting portions 330 engage with the first opening 3228 and the second opening 3229, respectively.

[0109] As shown in Figure 22, the engagement structure 332 includes two connecting sheets 332b, which are connected to the elastic sheet portion 340. One of the connecting sheets 332b is provided with a locking hook 332a.

[0110] As shown in Figure 23, the engagement structure 332 includes three connecting sheets 332b arranged sequentially along a third direction D3, with a slit between two adjacent connecting sheets 332b. Here, the two outermost connecting sheets 332b are each provided with one locking hook 332a.

[0111] As shown in Figure 24, the engagement structure 332 includes one connecting sheet 332b, and a locking hook 332a is provided at one end of this connecting sheet 332b along the third direction D3.

[0112] As shown in Figures 25 to 28, the movable assembly 3000 according to the sixth embodiment of this application is similar to the movable assembly 3000 according to the fifth embodiment, and therefore its description will be omitted. However, the differences are as follows.

[0113] The engaging structure 332 is a sheet structure, and the two engaging structures 332 are locked into the first opening 3228 and the second opening 3229, respectively.

[0114] A first connection hole 410 is further provided in the first side wall 3222a, and a second connection hole 420 is further provided in the second side wall 3222b. Each connection portion 330 further includes a projection 333, the projections 333 of the two connection portions 330 enter into the first connection hole 410 and the second connection hole 420, respectively, and are interlocked into the first connection hole 410 and the second connection hole 420, respectively.

[0115] As shown in Figure 27, the cross-sectional shape of the projection 333 is circular.

[0116] As shown in Figure 29, in other embodiments, the cross-sectional shape of the projection 333 may be elliptical. Of course, in other embodiments, the cross-sectional shape of the projection 333 may be other shapes such as rectangles or triangles.

[0117] As shown in Figures 30 to 32, the movable assembly 3000 according to the seventh embodiment of this application is similar to the movable assembly 3000 according to the fifth embodiment, and therefore its description will be omitted. However, the differences are as follows.

[0118] Both the first side wall 3222a and the second side wall 3222b are provided with protruding claws 600. Each connecting portion 330 includes a collar 334, and the collars 334 of the two connecting portions 330 are fitted onto the outer circumference of the protruding claw 600 of the first side wall 3222a and the outer circumference of the protruding claw 600 of the second side wall 3222b, respectively.

[0119] In the embodiment of the present invention, the first side wall 3222a is provided with two protruding claws 600 spaced apart along the third direction D3 at one end away from the base 3211, the first anti-rotation member 310 is provided with two collars 334, and the two collars 334 of the first anti-rotation member 310 are fitted onto the outer circumference of the two protruding claws 600 of the first side wall 3222a.

[0120] The second side wall 3222b is provided with two protruding claws 600 spaced apart along the third direction D3 at one end away from the base 3211, and the second anti-rotation member 320 is provided with two collars 334, the two collars 334 of the second anti-rotation member 320 are fitted onto the outer circumference of the two protruding claws 600 of the second side wall 3222b.

[0121] Furthermore, in the embodiment of the present application, the movable contact assembly 3100 includes one movable contact 3110 and two second magnetic conductors 6200, the movable contact 3110 is provided with via holes, each second magnetic conductor 6200 has a U-shaped structure, and the two adjacent sides of the two U-shaped structures are inserted into the same via hole.

[0122] As shown in Figures 33 to 35, the movable assembly 3000 according to the eighth embodiment of this application is similar to the movable assembly 3000 according to the third embodiment, and therefore its features will not be explained. However, the differences are as follows.

[0123] The connection portion 330 of the first anti-rotation member 310 is crimped to the first inner surface 3223 of the first side wall 3222a facing the movable contact assembly 3100, and the connection portion 330 of the second anti-rotation member 320 is crimped to the second inner surface 3225 of the second side wall 3222b facing the movable contact assembly 3100.

[0124] In other embodiments, the connection portion 330 of the first anti-rotation member 310 is welded to the first inner surface 3223 of the first side wall 3222a facing the movable contact assembly 3100, and the connection portion 330 of the second anti-rotation member 320 is welded to the second inner surface 3225 of the second side wall 3222b facing the movable contact assembly 3100.

[0125] Furthermore, in the embodiment of the present application, the anti-rotation structure 300 further includes a transition member 360, and one end of the first anti-rotation member 310 and one end of the second anti-rotation member 320 are integrally connected to both ends of the transition member 360 along the third direction D3.

[0126] As shown in Figures 36 to 38, the movable assembly 3000 according to the ninth embodiment of this application is similar to the movable assembly 3000 according to the first embodiment, and therefore its details will not be explained. However, the differences are as follows.

[0127] The anti-rotation structure 300 further includes a transition member 360, the first anti-rotation member 310 and the second anti-rotation member 320 being integrally connected to both ends of the transition member 360 along the third direction D3. The transition member 360 is fixedly connected to the movable contact assembly 3100. One end of the elastic assembly 3300 abuts against the base 3211, and the other end abuts against the transition member 360.

[0128] As an example, the transition member 360 is fixedly connected to the second magnetic conductor 6200. Furthermore, the transition member 360 and the second magnetic conductor 6200 are connected by methods such as crimping and welding, but are not limited to these.

[0129] As shown in Figures 39 to 41, the movable assembly 3000 according to the 10th embodiment of this application is similar to the movable assembly 3000 according to the 9th embodiment, and therefore its description will be omitted. However, the differences are as follows.

[0130] The transition member 360 is provided between the stopper wall 3230 and the first magnetic conductor 6100, and is fixedly connected to the stopper wall 3230 and the first magnetic conductor 6100. That is, when assembling the push rod assembly 3200, the stopper wall 3230, the first magnetic conductor 6100, and the anti-rotation structure 300 are first fixedly connected as an integrated member, and then this integrated member can be connected to the contact bracket 3220.

[0131] Furthermore, the stopper wall 3230, the first magnetic conductor 6100, and the transition member 360 of the anti-rotation structure 300 may be connected by methods such as crimping or welding, but are not limited to these.

[0132] As shown in Figure 42, the movable assembly 3000 according to the 11th embodiment of this application is similar to the movable assembly 3000 according to the first embodiment, and this will not be explained further. The differences are as follows.

[0133] The first anti-rotation member 310 and the second anti-rotation member 320 are both elastic sheets. The first anti-rotation member 310 is integrally connected to the first side wall 3222a, and the second anti-rotation member 320 is integrally connected to the second side wall 3222b. The first anti-rotation member 310 provides a first elastic force to the movable contact assembly 3100, and the second anti-rotation member 320 provides a second elastic force to the movable contact assembly 3100.

[0134] Furthermore, the first side wall 3222a further has a third opening 510, and the second side wall 3222b further has a fourth opening 520. The first anti-rotation member 310 is integrally connected to the upper edge of the third opening 510, and the second anti-rotation member 320 is integrally connected to the upper edge of the fourth opening 520.

[0135] As shown in Figure 43, the movable assembly 3000 according to the twelfth embodiment of this application is similar to the movable assembly 3000 according to the eleventh embodiment, and therefore will not be explained further. The differences are as follows.

[0136] The first anti-rotation member 310 is integrally connected to the lower edge of the third opening 510, and the second anti-rotation member 320 is integrally connected to the lower edge of the fourth opening 520.

[0137] In addition, in the third to twelfth embodiments described above, the first anti-rotation member 310 and the second anti-rotation member 320 may both be provided with slots 350.

[0138] Furthermore, the various embodiments / models provided in this application can be combined with each other without contradiction, and their explanation is omitted here.

[0139] In the embodiments of this application, the terms “first,” “second,” and “third” are used solely for illustrative purposes and are not intended to indicate or imply relative importance. The term “plural” means two or more unless otherwise specified. Terms such as “attach,” “connect,” “join,” and “fix” should be understood broadly. For example, “connect” may be a fixed connection, a removable connection, or an integral connection. “Connect” may be a direct connection or an indirect connection via an intermediate medium. The specific meanings of the above terms in the embodiments of this application can be understood by those skilled in the art depending on the specific circumstances.

[0140] In the description of the embodiments of this application, the directions or positional relationships indicated by terms such as "up," "down," "left," "right," "front," and "back" are directions or positional relationships based on the drawings and are merely for the purpose of describing and simplifying the descriptions of the embodiments of this application, and do not indicate or imply that the device or unit being referred to needs to have a specific orientation in order to be configured and operate in a particular orientation, nor should they be understood as limitations to the embodiments of this application.

[0141] In this specification, the terms “one embodiment,” “several embodiments,” and “specific embodiments” mean that any particular feature, structure, material, or characteristic described in relation to this embodiment or example is included in at least one embodiment or example of the embodiments of this application. In this specification, the general expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, any particular feature, structure, material, or characteristic described may be combined in an appropriate manner in any one or more embodiments or examples.

[0142] The foregoing are merely preferred embodiments of the embodiments of the present application and are not intended to limit the embodiments of the present application. To those skilled in the art, the embodiments of the present application are subject to various modifications and alterations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of the present application are included within the scope of protection of the embodiments of the present application.

Claims

1. A pair of fixed contact leads, A movable contact assembly including a movable contact, A push rod assembly including a contact bracket, A flexible anti-rotation structure including a first anti-rotation member and a second anti-rotation member, The two ends of the movable contact along the first direction are in contact with or separated from a pair of fixed contact lead-out ends, the first direction being the direction in which the pair of fixed contact lead-out ends are arranged, the movable contact assembly having a first side surface and a second side surface facing each other along a third direction, the direction of movement of the movable contact is defined as the second direction, and the first direction, the second direction and the third direction are orthogonal to each other. The contact bracket has a first side wall and a second side wall provided opposite to each other along the third direction, the first side wall corresponding to the first side surface, and the second side wall corresponding to the second side surface. The first anti-rotation member is provided between the first side wall and the first side surface, and the second anti-rotation member is provided between the second side wall and the second side surface. Both the first anti-rotation member and the second anti-rotation member are sheet structures manufactured from a flexible material. The first side wall has a first inner surface facing the movable contact assembly, and the first anti-rotation member is attached to the first inner surface or the first side surface; the second side wall has a second inner surface facing the movable contact assembly, and the second anti-rotation member is attached to the second inner surface or the second side surface. A relay characterized by the following features.

2. A pair of fixed contact leads, A movable contact assembly including a movable contact, A push rod assembly including a contact bracket, A flexible anti-rotation structure including a first anti-rotation member and a second anti-rotation member, The two ends of the movable contact along the first direction are in contact with or separated from a pair of fixed contact lead-out ends, the first direction being the direction in which the pair of fixed contact lead-out ends are arranged, the movable contact assembly having a first side surface and a second side surface facing each other along a third direction, the direction of movement of the movable contact is defined as the second direction, and the first direction, the second direction and the third direction are orthogonal to each other. The contact bracket has a first side wall and a second side wall provided opposite to each other along the third direction, the first side wall corresponding to the first side surface, and the second side wall corresponding to the second side surface. The first anti-rotation member is provided between the first side wall and the first side surface, and the second anti-rotation member is provided between the second side wall and the second side surface. Both the first anti-rotation member and the second anti-rotation member are elastic sheets. The first anti-rotation member is pressed between the first side wall and the first side surface of the movable contact assembly, providing a first elastic force to the movable contact assembly; the second anti-rotation member is pressed between the second side wall and the second side surface of the movable contact assembly, providing a second elastic force to the movable contact assembly; The directions of the first elastic force and the second elastic force are opposite. A relay characterized by the following features.

3. Both the first anti-rotation member and the second anti-rotation member include a connecting portion and an elastic sheet portion. The two connecting portions are connected to the first and second side walls, respectively, and the two elastic sheet portions extend from the two connecting portions away from the fixed contact lead-out end, and the two elastic sheet portions provide the first and second elastic forces to the movable contact assembly, respectively. The relay according to feature 2.

4. The connecting portion of the first anti-rotation member is crimped to the first inner surface of the first side wall facing the movable contact assembly, and the connecting portion of the second anti-rotation member is crimped to the second inner surface of the second side wall facing the movable contact assembly. The relay according to feature 3.

5. The first side wall is provided with a first opening, and the second side wall is provided with a second opening. Each of the aforementioned connecting parts includes a hanging hook, and the hanging hooks of the two connecting parts are hung on the lower edge of the first opening and the lower edge of the second opening, respectively. The relay according to feature 3.

6. The first side wall is provided with a first opening, and the second side wall is provided with a second opening. Each of the aforementioned connecting portions includes an engaging structure, and the engaging structures of the two connecting portions engage with the first opening and the second opening, respectively. The relay according to feature 3.

7. The first side wall is further provided with a first connection hole, and the second side wall is further provided with a second connection hole. Each of the connecting portions further includes a projection, the projections of the two connecting portions each enter into the first connecting hole and the second connecting hole, and are interlocked into the first connecting hole and the second connecting hole, respectively. The relay described in Feature 6.

8. Both the first side wall and the second side wall are provided with protruding claws. Each of the aforementioned connecting parts includes a collar, and the collars of the two connecting parts are fitted onto the outer circumference of the protruding claw of the first side wall and the outer circumference of the protruding claw of the second side wall, respectively. The relay according to feature 3.

9. The aforementioned anti-rotation structure further includes a transition member, One end of the first anti-rotation member and one end of the second anti-rotation member are integrally connected to both ends of the transition member along the third direction. The relay according to any one of claims 2 to 8.

10. The transition member has a central hole, The relay further includes an elastic assembly, the elastic assembly being connected to the movable contact assembly and the push rod assembly, and the elastic assembly providing contact pressure to the movable contact assembly. The elastic assembly is drilled in the central hole The relay according to feature 9.

11. The aforementioned anti-rotation structure further includes a transition member, One end of the first anti-rotation member and one end of the second anti-rotation member are integrally connected to both ends of the transition member along the third direction, The transition member is fixedly connected to the movable contact assembly. The relay according to feature 2.

12. The movable contact assembly further includes a second magnetic conductor, the second magnetic conductor being fixedly connected to the side of the movable contact facing away from the fixed contact lead-out end. The transition member is fixedly connected to the second magnetic conductor. The relay according to feature 11.

13. The aforementioned anti-rotation structure further includes a transition member, One end of the first anti-rotation member and one end of the second anti-rotation member are integrally connected to both ends of the transition member along the third direction, The push rod assembly further includes a stopper wall, the two ends of the stopper wall along the third direction being connected to the first side wall and the second side wall, respectively. The transition member is fixedly connected to the stopper wall. The relay according to feature 2.

14. The relay further includes a first magnetic conductor, the first magnetic conductor being provided on the side of the movable contact assembly toward the fixed contact lead-out end, The transition member is provided between the stopper wall and the first magnetic conductor, and is fixedly connected to the stopper wall and the first magnetic conductor. The relay according to feature 13.

15. The first anti-rotation member is integrally connected to the first side wall, and the second anti-rotation member is integrally connected to the second side wall. The relay according to feature 1 or 2.

16. The push rod assembly further includes a rod portion and a base connected to one end of the rod portion in the axial direction, The contact bracket further includes a bottom wall, the ends of the bottom wall along the third direction being integrally connected to one end of the first side wall and the second side wall, respectively, the contact bracket, the rod portion and the base being fixedly connected, and the base covering the bottom wall and one end of the first side wall and the second side wall, The push rod assembly further includes a stopper wall, the stopper wall being connected to the other end of the first side wall and the second side wall, and the stopper wall being provided on the side of the movable contact assembly facing the fixed contact lead-out end. The relay according to feature 1 or 2.

17. The push rod assembly further includes a rod portion and a base connected to one end of the rod portion in the axial direction, The contact bracket further includes a top wall, the two ends of the top wall along the third direction being integrally connected to one end of the first side wall and the second side wall, respectively. The other ends of the first side wall and the second side wall are each engaged with the base. The relay according to feature 1 or 2.

18. The relay further includes a first magnetic conductor, the first magnetic conductor being provided on the side of the movable contact assembly toward the fixed contact lead-out end, The movable contact assembly includes a plurality of movable contacts and a plurality of second magnetic conductors, the plurality of movable contacts arranged in a line along the third direction, the plurality of second magnetic conductors fixedly connected one-to-one on the side of the plurality of movable contacts facing away from the fixed contact lead-out ends, and each of the second magnetic conductors forms a magnetic circuit with the first magnetic conductor. In the plurality of second magnetic conductors, the two outermost second magnetic conductors each have a first side surface and a second side surface. The relay according to feature 1 or 2.

19. Throughout the entire process of movement of the push rod assembly, the first anti-rotation member is always in contact with the first side wall and the first side surface, and the second anti-rotation member is always in contact with the second side wall and the second side surface. The relay according to feature 1 or 2.

20. The first anti-rotation member and / or the second anti-rotation member are provided with slots. The relay according to any one of claims 2 to 8 or 11 to 14.

Images