Relay

Abstract

The present disclosure relates to a relay, comprising an insulating cover, a pair of static contacts, a moving assembly and an anti-rotation structure, wherein the insulating cover has a side wall, and the pair of static contacts are connected to the insulating cover and are spaced apart in a first direction; the moving assembly comprises a moving contact piece and a contact carrier which are located in the insulating cover, and two ends of the moving contact piece in the first direction are configured to respectively come into contact with or be separated from the pair of static contacts; and the anti-rotation structure is arranged between the side wall and the contact carrier and is a separate structure from the contact carrier, and is configured to limit the rotation of the contact carrier around the axis of the moving assembly.

Description

relay

[0001] This disclosure claims priority to Chinese Patent Application No. 202421221784.6, filed on May 30, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of electronic control device technology, and more specifically, to a relay. Background Technology

[0003] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit), and is commonly used in automatic control circuits. Essentially, a relay is an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays a role in automatic adjustment, safety protection, and circuit switching in circuits.

[0004] A high-voltage DC relay is a type of relay. Existing high-voltage DC relays include a pair of stationary contacts, an insulating cover, a moving assembly, and a magnetic circuit. The moving assembly includes a moving contact, a push rod assembly, and a spring assembly. The moving contact is mounted on the push rod assembly via the spring assembly. The magnetic circuit includes a stationary iron core, a moving iron core, and a coil. The stationary iron core is fixedly disposed within the relay, and the moving iron core is connected to the push rod assembly. When the coil is energized, the stationary iron core generates a magnetic force that attracts the moving iron core, thereby causing the push rod assembly and the moving contact to move together, thus closing the contacts.

[0005] In related technologies, in order to limit the range of rotation of the moving component around the axis of the push rod member, a rib is usually provided on the inner wall of the insulating cover so that the side of the moving component and the rib are fitted with a small clearance.

[0006] However, after the relay has been opened and closed multiple times, the side of the moving component can easily come into contact with the raised rib and rub against it. On the one hand, as the number of frictions increases, the wear of the moving component intensifies, which in turn leads to a larger gap between the moving component and the raised rib. This causes the moving component to rotate around the axis of the push rod component to rotate more, affecting the contact position between the moving contact and the stationary contact, resulting in unstable contact resistance. On the other hand, the friction between the moving component and the raised rib can easily generate metal particles. When these metal particles fall onto the contact surface, they can easily cause the contact resistance to increase or even prevent the relay from conducting.

[0007] Utility Model Content

[0008] This disclosure provides a relay to improve the problem of unstable contact resistance or even failure to conduct in relays in the related art.

[0009] The relay of this disclosure embodiment includes:

[0010] Insulating cover, with sidewalls;

[0011] A pair of stationary contacts are connected to the insulating cover and are spaced apart along a first direction;

[0012] The moving assembly includes a moving contact and a contact support located within the insulating cover, wherein the two ends of the moving contact along the first direction are respectively used to contact or separate from a pair of stationary contacts; and

[0013] An anti-rotation structure is disposed between the side wall and the contact support, and is a separate structure from the contact support, used to restrict the contact support from rotating around the axis of the moving component.

[0014] According to some embodiments of this disclosure, during overtravel, the anti-rotation structure comes into contact with the sidewall.

[0015] According to some embodiments of this disclosure, the anti-rotation structure is an elastic element;

[0016] When the anti-rotation structure comes into contact with the sidewall, the anti-rotation structure is deformed by the pressure of the sidewall.

[0017] According to some embodiments of this disclosure, the stiffness of the anti-rotation structure is less than the stiffness of the contact support.

[0018] According to some embodiments of this disclosure, the contact support includes two side plates, which are arranged at intervals along a third direction, and the movable contact is located between the two side plates; wherein, the movement direction of the movable component is defined as a second direction, and the first direction, the second direction, and the third direction are mutually perpendicular;

[0019] The sidewall includes two second sidewalls disposed opposite to each other along the third direction, and the two side plates respectively correspond to the two second sidewalls;

[0020] The anti-rotation structure includes at least two anti-rotation components, and at least one of the anti-rotation components is provided between the corresponding second sidewall and the side plate.

[0021] According to some embodiments of this disclosure, the anti-rotation component is connected to the side plate.

[0022] According to some embodiments of this disclosure, the number of anti-rotation components is two, which are respectively attached to the side surface of the two side plates facing away from the moving contact piece;

[0023] The anti-rotation component is made of an elastic material.

[0024] According to some embodiments of this disclosure, the anti-rotation component includes a connecting portion and a spring portion. The connecting portion is connected to the side plate, and the spring portion is connected to the connecting portion and is deformed by being squeezed by the side wall.

[0025] According to some embodiments of this disclosure, the contact support further includes a fixing plate, the fixing plate having protrusions at both ends along the third direction, each side plate having a mounting hole, and the two protrusions being respectively confined within the two mounting holes; the movable contact piece is located within the space enclosed by the two side plates and the fixing plate;

[0026] Each of the connecting parts has a hook, and at least one of the hooks is attached to the lower edge of the mounting hole and pressed against by the protrusion.

[0027] According to some embodiments of this disclosure, the connecting portion is connected to a plurality of the spring portions on one side along the second direction, and the plurality of spring portions of the anti-rotation member are arranged at intervals along the first direction.

[0028] According to some embodiments of this disclosure, each of the side plates is connected to at least two of the anti-rotation members, and at least two of the hooks of the at least two of the anti-rotation members are simultaneously suspended from the lower edge of the same mounting hole and simultaneously pressed against by a protrusion of the fixing plate.

[0029] According to some embodiments of this disclosure, the connecting portion is riveted or welded to the side plate.

[0030] According to some embodiments of this disclosure, the second sidewall has a sidewall body and a rib, the rib protruding from the inner surface of the sidewall body and extending along the second direction for contacting the anti-rotation component.

[0031] According to some embodiments of this disclosure, the rib has an abutting surface and a guide slope. The abutting surface is used to abut against the anti-rotation member, and the guide slope is connected to the abutting surface and extends obliquely from the abutting surface toward the sidewall body and away from the stationary contact, for guiding the anti-rotation member to move to the abutting surface.

[0032] According to some embodiments of this disclosure, when the coil of the relay is de-energized, the anti-rotation component does not contact the protruding rib.

[0033] According to some embodiments of this disclosure, the anti-rotation component is connected to the second sidewall.

[0034] According to some embodiments of this disclosure, the insulating cover further includes:

[0035] The top wall is connected to a pair of stationary contacts; the side wall is connected to the top wall.

[0036] According to some embodiments of this disclosure, the sidewall includes two first sidewalls and two second sidewalls. The two first sidewalls are arranged opposite each other along the first direction, and the two second sidewalls are arranged opposite each other along the third direction. The two first sidewalls and the two second sidewalls are connected end to end to form a ring structure. The movement direction of the moving component is defined as the second direction, and the first direction, the second direction, and the third direction are perpendicular to each other.

[0037] The anti-rotation structure is disposed between the second sidewalls of the contact bracket.

[0038] According to some embodiments of this disclosure, the moving assembly further includes a push rod, a mounting base, and a first elastic element. The mounting base is connected to one axial end of the push rod, the contact bracket is connected to the mounting base, and the first elastic element is located between the mounting base and the moving contact piece, for providing an elastic force to the moving contact piece toward the stationary contact.

[0039] An embodiment of the above application has at least the following advantages or beneficial effects:

[0040] The relay of this embodiment has two main advantages. First, the anti-rotation structure restricts the rotation of the contact support around the axis of the moving component, reducing the rotation amplitude of the moving component. This ensures the consistency of the contact position between the moving contact and the stationary contact, improves the stability of the contact resistance, and avoids the problem of metal particles and / or ceramic powder being generated due to contact friction between the moving component and the insulating cover, which fall onto the contact surface and cause increased contact resistance or even non-conduction. This ensures the reliability of the relay operation. Second, the anti-rotation structure and the contact support are separate structures, allowing for different stiffness designs. For example, the anti-rotation structure can have lower stiffness, while the contact support has higher stiffness. This higher stiffness makes the contact support less prone to deformation, ensuring that the position of the moving contact is not shifted by the deformation of the support. This ensures the consistency and stability of the contact between the moving contact and the stationary contact, without affecting the effective operation of the relay. The anti-rotation structure with lower stiffness has better resilience, providing anti-rotation force while reducing or even preventing scratches on the inner wall surface of the sidewall.

[0041] Furthermore, the anti-rotation component is made of elastic materials such as rubber and plastic. During the reciprocating motion of the moving component, it can reduce the friction between the anti-rotation component and the inner wall of the insulating cover, and also reduce the noise generated by the friction between the anti-rotation component and the inner wall of the insulating cover. Attached Figure Description

[0042] Figure 1 is an exploded view of a relay according to an exemplary embodiment.

[0043] Figure 2 is a top view of a relay according to an exemplary embodiment, wherein the housing, coil frame, coil, U-shaped yoke, and arc extinguishing part are omitted.

[0044] Figure 3 is a cross-sectional view along section line AA in Figure 2.

[0045] Figure 4 is a three-dimensional schematic diagram of the anti-rotation structure and moving component after assembly according to the first embodiment of this disclosure.

[0046] Figure 5 is a three-dimensional schematic diagram of the anti-rotation structure and moving component after assembly according to the second embodiment of this disclosure.

[0047] Figure 6 is a three-dimensional schematic diagram of the anti-rotation structure and moving component after assembly according to the third embodiment of this disclosure.

[0048] Figure 7 is an exploded view of Figure 6.

[0049] Figure 8 is a three-dimensional schematic diagram of the anti-rotation structure and moving component after assembly according to the fourth embodiment of this disclosure.

[0050] Figure 9 is a three-dimensional schematic diagram of the anti-rotation structure and moving component after assembly according to the fifth embodiment of this disclosure.

[0051] Figure 10 is a three-dimensional schematic diagram of the anti-rotation structure and moving component after assembly according to the sixth embodiment of this disclosure.

[0052] Figure 11 is a schematic diagram of the exploded view of Figure 10.

[0053] Figure 12 is a three-dimensional schematic diagram of the anti-rotation structure and moving component after assembly according to the seventh embodiment of this disclosure.

[0054] Figure 13 is a three-dimensional schematic diagram of the anti-rotation structure and moving component after assembly according to the eighth embodiment of this disclosure.

[0055] Figure 14 is a cross-sectional view along the BB section line in Figure 2, and the cross-sectional view shows the insulating cover of the ninth embodiment of the present disclosure, wherein the anti-rotation member and the rib are not in contact.

[0056] Figure 15 is a cross-sectional view along the BB section line in Figure 2, and the cross-sectional view shows the insulating cover of the ninth embodiment of the present disclosure, wherein the anti-rotation member is in contact with the rib.

[0057] Figure 16 is a cross-sectional view along the BB section line in Figure 2, and the cross-sectional view shows a schematic diagram of the anti-rotation component connected to the insulating cover in the tenth embodiment of this disclosure. Detailed Implementation

[0058] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0059] It is understood that the terms "comprising" and "having," and any variations thereof, used in the embodiments of this disclosure, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to such processes, methods, products, or apparatus.

[0060] As shown in Figures 1 to 3, the relay of this embodiment includes a housing 10, an insulating cover 21, a yoke plate 25, a pair of stationary contacts 22, an arc-extinguishing portion 26, a moving assembly 30, and a magnetic circuit portion 40. The insulating cover 21, the yoke plate 25, the pair of stationary contacts 22, the arc-extinguishing portion 26, the moving assembly 30, and the magnetic circuit portion 40 are disposed within the housing 10.

[0061] The outer shell 10 includes an upper shell 11 and a bottom shell 12, which are connected to form a chamber for accommodating an insulating cover 21, a yoke plate 25, a pair of stationary contacts 22, an arc-extinguishing part 26, a moving assembly 30, and a magnetic circuit part 40.

[0062] As shown in Figure 3, the insulating cover 21 has an inner cavity 212. A pair of stationary contacts 22 are mounted on the top of the insulating cover 21. At least a portion of each stationary contact 22 extends into the inner cavity 212 of the insulating cover 21, and each stationary contact 22 also has a stationary contact point at its bottom. The stationary contact point can be integrally or separately disposed at the bottom of the stationary contact 22. One stationary contact 22 serves as the terminal for current inflow, and the other stationary contact 22 serves as the terminal for current outflow.

[0063] In this embodiment of the present disclosure, the top of the insulating cover 21 has two openings 211, each opening 211 communicating with the inner cavity 212. A pair of stationary contacts 22 are respectively disposed in the two openings 211. Furthermore, each stationary contact 22 can be connected to the insulating cover 21 by welding, but is not limited thereto.

[0064] It is understood that the insulating cover 21 can be made of ceramic material, that is, the insulating cover 21 is a ceramic cover, but it is not limited thereto. For example, in other embodiments, the insulating cover 21 can also be made of plastic material.

[0065] In this embodiment, the insulating cover 21 is made of ceramic and is connected to the yoke plate 25 via a frame 24. The frame 24 can be a ring-shaped metal part, such as an iron-nickel alloy. One end of the frame 24 is connected to the edge of the opening of the insulating cover 21, for example, by laser welding, brazing, resistance welding, or adhesive bonding. The other end of the frame 24 is connected to the yoke plate 25, also by laser welding, brazing, resistance welding, or adhesive bonding. The frame 24 is provided between the insulating cover 21 and the yoke plate 25 to facilitate their connection.

[0066] The insulating cover 21 includes a top wall 213 and a side wall 214. One axial end of the side wall 214 is connected to the outer periphery of the top wall 213, and the other axial end of the side wall 214 is connected to the frame 24. The top wall 213 and the side wall 214 together form an inner cavity 212.

[0067] The top wall 213 has two openings 211, and a pair of stationary contacts 22 are respectively inserted into the two openings 211. Each stationary contact 22 can be connected to the top wall 213 by welding, but is not limited to this.

[0068] Please refer to Figure 3. The moving component 30 includes a moving contact 31, a first elastic element 32, and a push rod component 33.

[0069] For ease of explanation, the arrangement direction of a pair of stationary contacts 22 is defined as the first direction D1, and the movement direction of the moving component 30 is defined as the second direction D2, wherein the first direction D1 is perpendicular to the second direction D2. The direction perpendicular to both the first direction D1 and the second direction D2 is defined as the third direction D3.

[0070] The movable contact 31 is disposed inside the insulating cover 21, and the two ends of the movable contact 31 along the first direction D1 are respectively used to contact or separate from the bottom of a pair of stationary contacts 22.

[0071] The push rod member 33 is movably inserted through the first through hole 251 of the yoke plate 25, and part of the push rod member 33 extends out of the side surface of the yoke plate 25 facing the stationary contact 22, and part of the push rod member 33 extends out of the side surface of the yoke plate 25 away from the stationary contact 22.

[0072] The movable contact 31 is movably mounted on the portion of the push rod member 33 that extends from the side surface of the yoke plate 25 toward the stationary contact 22. The first elastic member 32 is connected to the push rod member 33 and the movable contact 31 and is used to apply an elastic force to the movable contact 31 toward the stationary contact 22 to provide contact pressure.

[0073] As an example, the first elastic element 32 is a spring or a leaf spring, but is not limited thereto. In addition, the number of the first elastic elements 32 can be one or more. When the number of the first elastic elements 32 is multiple, all of the multiple first elastic elements 32 can be springs, or all of them can be leaf springs, or they can be a combination of leaf springs and springs. This disclosure does not particularly limit this.

[0074] A metal cover 27 is also provided on the side of the yoke plate 25 facing away from the stationary contact 22, and the metal cover 27 covers the first through hole 251 of the yoke plate 25. The portion of the push rod member 33 extending out of the side of the yoke plate 25 facing away from the stationary contact 22 is inserted into the metal cover 27.

[0075] Please refer to Figures 1 and 3. The magnetic circuit section 40 includes a moving iron core 41, a stationary iron core 42, a coil frame 43, and a coil 44. The coil frame 43 is a hollow cylindrical shape and is made of insulating material. The coil frame 43 is located on the side of the yoke plate 25 facing away from the stationary contact 22 and surrounds the outer periphery of the metal cover 27. The coil 44 is wound around the outer periphery of the coil frame 43.

[0076] The stationary iron core 42 is fixedly disposed within the metal cover 27, with a portion of the stationary iron core 42 inserted into the first through hole 251. The stationary iron core 42 has a second through hole 421, which corresponds in position to the first through hole 251, allowing the push rod member 33 to be movably inserted into both the first through hole 251 and the second through hole 421. The moving iron core 41 is movably disposed within the metal cover 27 and is positioned opposite the stationary iron core 42 in the second direction D2. The moving iron core 41 is connected to the push rod member 33 and is attracted by the stationary iron core 42 when the coil 44 is energized. The moving iron core 41 and the push rod member 33 can be connected by screwing, riveting, welding, or other methods.

[0077] As shown in Figure 3, the magnetic circuit part 40 also includes a second elastic element 46, which is located inside the metal cover 27 and is disposed between the stationary iron core 42 and the moving iron core 41. It is used to reset the moving iron core 41 when the coil 44 is de-energized.

[0078] In one embodiment, the second elastic element 46 is a spring and is sleeved on the outer periphery of the push rod member 33, but is not limited thereto.

[0079] It should be noted that when the coil 44 is energized, the stationary iron core 42 attracts the moving iron core 41 to move upward, and the moving iron core 41 can drive the push rod component 33 to move upward. When the moving contact 31 contacts the stationary contact 22, the moving contact 31 is stopped by the stationary contact 22, while the push rod component 33 will continue to move upward until it has completed its overtravel.

[0080] During the overtravel process, the first elastic element 32, after being squeezed by the push rod member 33, can provide elastic force to the moving contact piece 31 to provide contact pressure.

[0081] As shown in Figures 1 and 3, the magnetic circuit section 40 also includes a U-shaped yoke 47. The U-shaped yoke 47 includes a bottom yoke plate 471 and two side yoke plates 472. The two side yoke plates 472 are respectively connected to both ends of the bottom yoke plate 471 along the first direction D1, and the two side yoke plates 472 are arranged opposite to each other along the first direction D1. The bottom yoke plate 471 is located on the side of the coil frame 43 facing away from the stationary contact 22, and the ends of the two side yoke plates 472 away from the bottom yoke plate 471 are respectively connected to both ends of the yoke plate 25 along the first direction D1. The coil 44, coil frame 43, metal cover 27, and moving iron core 41 are accommodated within the space enclosed by the yoke plate 25, the bottom yoke plate 471, and the two side yoke plates 472 of the U-shaped yoke 47.

[0082] As shown in Figure 1, the arc-extinguishing part 26 includes a permanent magnet 262, which is disposed on the outer surface of the insulating cover 21. By setting the permanent magnet 262 on the outer periphery of the insulating cover 21, a magnetic field can be formed around the stationary contact 22 and the moving contact 31. Therefore, under the action of the magnetic field, the electric arc generated between the stationary contacts 22 will be elongated in a direction away from each other, thus extinguishing the arc.

[0083] The arc-extinguishing section 26 also includes a yoke clamp 261, with a permanent magnet 262 disposed between the side surface of the yoke clamp 261 facing the insulating cover 21 and the outer peripheral surface of the insulating cover 21. The design of the yoke clamp 261 surrounding the permanent magnet 262 prevents the magnetic field generated by the permanent magnet 262 from spreading outwards and affecting the arc-extinguishing effect.

[0084] In one embodiment, the yoke clip 261 is made of a soft magnetic material, which may include, but is not limited to, iron, cobalt, nickel, and their alloys.

[0085] It is understandable that the number of yoke clips 261 can be one or two. When there is only one yoke clip 261, it forms a ring structure and surrounds the outer periphery of the insulating cover 21. When there are two yoke clips 261, as shown in Figure 1, each yoke clip 261 can be U-shaped and arranged opposite each other along the first direction D1, with the two yoke clips 261 respectively surrounding the two ends of the insulating cover 21 along the first direction D1.

[0086] Please refer back to Figure 2. The sidewall 214 includes two first sidewalls 2141 and two second sidewalls 2142. The two first sidewalls 2141 are arranged opposite each other along the first direction D1, and the two second sidewalls 2142 are arranged opposite each other along the third direction D3. The two first sidewalls 2141 and the two second sidewalls 2142 are connected end to end to form a ring structure.

[0087] It is understood that this disclosure does not impose any particular limitation on the shape of the sidewall 214. For example, the annular structure formed by the sidewall 214 can be rectangular, circular, elliptical, etc.

[0088] As shown in Figure 4, the push rod component 33 includes a push rod 333, a mounting base 332, and a contact bracket 331. The mounting base 332 is connected to one axial end of the push rod 333, and the contact bracket 331 is connected to the mounting base 332. The push rod 333 is movably inserted through the first through hole 251 along the second direction D2. The movable contact 31 is disposed within the contact bracket 331, and the first elastic member 32 is disposed between the movable contact 31 and the mounting base 332. The relay of this embodiment also includes an anti-rotation structure 60, disposed between the second sidewall 2142 and the contact bracket 331, and is a separate structure from the contact bracket 331, used to restrict the contact bracket 331 from rotating around the axis of the moving component 30.

[0089] In this embodiment of the relay, on the one hand, the anti-rotation structure 60 can restrict the contact support 331 from rotating around the axis of the moving component 30. The anti-rotation structure 60 can reduce the rotation amplitude of the moving component 30, thereby ensuring the consistency of the contact position between the moving contact 31 and the stationary contact 22, improving the stability of the contact resistance, and avoiding the problem of metal particles and / or ceramic powder being generated due to contact friction between the moving component 30 and the insulating cover 21 and falling onto the contact surface, which would lead to increased contact resistance or even non-conduction, thus ensuring the reliability of the relay operation; on the other hand, the anti-rotation structure 60 and the contact support 331... The 31 is a split structure, which allows the anti-rotation structure 60 and the contact support 331 to be designed with different stiffnesses. For example, the anti-rotation structure 60 has lower stiffness, while the contact support 331 has higher stiffness. The contact support 331 with higher stiffness is not easily deformed, which can ensure that the position of the moving contact 31 is not shifted by the deformation of the contact support 331, thereby ensuring the consistency and stability of the contact between the moving contact 31 and the stationary contact 22, and not affecting the effective operation of the relay. The anti-rotation structure 60 with lower stiffness has better resilience, which can prevent scratching the inner wall surface of the side wall 214 while providing anti-rotation force.

[0090] As shown in Figure 4, the contact bracket 331 includes two side plates 3311. One end of each side plate 3311 along the second direction D2 is connected to the mounting base 332, and the two side plates 3311 are spaced apart along the third direction D3. The two side plates 3311 correspond to the two second side walls 2142 respectively. The movable contact piece 31 and the first elastic member 32 are located between the two side plates 3311. Each side plate 3311 has an inner side surface 3311a and an outer side surface 3311b arranged opposite to each other along the third direction D3. The two inner side surfaces 3311a are arranged face to face along the third direction D3, and the two outer side surfaces 3311b are arranged opposite to each other along the third direction D3.

[0091] The mounting base 332 can be made of plastic material, and the two side plates 3311, push rod 333 and mounting base 332 can be integrally molded by injection molding, but are not limited thereto.

[0092] Optionally, a connecting plate 3314 may also be connected between the two side plates 3311. The two ends of the connecting plate 3314 along the third direction D3 are integrally connected to one end of each of the two side plates 3311 along the second direction D2. The mounting base 332 covers the outer periphery of the connecting plate 3314 and the connection position between the connecting plate 3314 and the side plates 3311. In this embodiment, the two side plates 3311 and the connecting plate 3314 form a U-shape.

[0093] The contact bracket 331 also includes a fixing plate 3312, which is connected at both ends along the third direction D3 to the ends of the two side plates 3311 away from the connecting plate 3314. The moving contact 31 and the first elastic element 32 are located in the space enclosed by the fixing plate 3312, the two side plates 3311 and the mounting base 332.

[0094] In one embodiment, the fixing plate 3312 has protrusions 3312a at both ends along the third direction D3, and each side plate 3311 has mounting holes 3313 that penetrate the inner side surface 3311a and the outer side surface 3311b, with the two protrusions 3312a respectively confined within the two mounting holes 3313.

[0095] Please refer to Figure 4. The anti-rotation structure 60 includes at least two anti-rotation components 610. At least one anti-rotation component 610 is provided between the corresponding second sidewall 2142 and the side plate 3311.

[0096] As an example, the anti-rotation element 610 is connected to the side plate 3311, and during overtravel, the anti-rotation element 610 contacts the second side wall 2142. It is understood that after the anti-rotation element 610 contacts the second side wall 2142, the anti-rotation element 610 can effectively limit the rotation of the contact support 331.

[0097] Furthermore, the side plate 3311 of the contact support 331 is located slightly above the center of the moving assembly 30. Connecting the anti-rotation component 610 to the side plate 3311 further ensures the balance of the contact support 331 along the third direction D3. At the same time, the connection of the anti-rotation component 610 to the side plate 3311 allows the side plate 3311 to absorb the vibration transmitted by the anti-rotation component 610, thus avoiding affecting the stability of the moving contact 31.

[0098] It should be noted that during the overtravel process, the "contact" between the anti-rotation component 610 and the second sidewall 2142 should be understood as active contact. That is, the anti-rotation component 610 is in contact with the second sidewall 2142 when the moving component 30 has not deflected and is in normal motion, rather than the anti-rotation component 610 only contacting the second sidewall 2142 after the moving component 30 has deflected. The anti-rotation component 610 of this disclosure adopts an active contact design with the second sidewall 2142, which can effectively suppress the deflection of the moving component 30 and reduce the magnitude of the deflection.

[0099] The contact between the anti-rotation component 610 and the second side wall 2142 can include two situations: the first is that the anti-rotation component 610 is always in contact with the second side wall 2142 during the entire movement of the moving component 30; the second is that when the relay coil is de-energized, the anti-rotation component 610 is not in contact with the second side wall 2142, and when the relay coil is energized, the anti-rotation component 610 only contacts the second side wall 2142 after the moving component 30 has moved a certain distance, and maintains this contact until the moving iron core 41 contacts the stationary iron core 42.

[0100] The anti-rotation component 610 is an elastic component. When the anti-rotation component 610 comes into contact with the second sidewall 2142, it is deformed by the pressure of the second sidewall 2142. After the anti-rotation component 610 deforms, it can generate a rebound force to further limit the deflection of the contact support 331.

[0101] As an example, the stiffness of the anti-rotation component 610 is less than that of the contact support 331. The anti-rotation component 610 and the contact support 331 are separate structures, which facilitates differentiating the stiffness of the anti-rotation component 610 and the contact support 331.

[0102] For example, the contact support 331 is made of a metal material, and the anti-rotation member 610 is made of a non-metallic elastic material. In one embodiment, the anti-rotation member 610 can be made of rubber or plastic, wherein the plastic can be a wear-resistant flexible plastic. The anti-rotation member 610 is made of an elastic material, which reduces the contact friction between the anti-rotation member 610 and the second sidewall 2142 during the reciprocating motion of the moving assembly 30, and also reduces the noise generated by friction between the anti-rotation member 610 and the inner wall surface of the second sidewall 2142.

[0103] Understandably, the stiffness of the anti-rotation component 610 is less than that of the contact support 331, so that the contact support 331 can provide stable support, and the anti-rotation component 610 can provide a rebound force by deforming under pressure.

[0104] It should be noted that designing the stiffness of the anti-rotation component 610 to be less than that of the contact support 331 is not limited to setting different materials for the anti-rotation component 610 and the contact support 331. For example, in other embodiments, it can also be designed such that, under the premise of the same material, the thickness of the anti-rotation component 610 is less than the thickness of the side plate 3311 of the contact support 331, or the anti-rotation component 610 and the contact support 331 have different shapes.

[0105] It is understood that the number of anti-rotation components 610 provided on each side plate 3311 can be one or more, where more means two or more. In this embodiment of the present disclosure, each side plate 3311 is connected to one anti-rotation component 610.

[0106] Furthermore, each side panel 3311 has at least one anti-rotation component 610 on one side of its outer surface 3311b. As shown in Figure 4, there are two anti-rotation components 610, and each anti-rotation component 610 is flat. The two anti-rotation components 610 are respectively attached to the two outer surfaces 3311b. The anti-rotation components 610 and the outer surfaces 3311b of the side panel 3311 can be connected by adhesive, snap-fit, or integral injection molding, but are not limited thereto.

[0107] Of course, the anti-rotation component 610 is not limited to a flat plate shape. For example, in other embodiments, the anti-rotation component 610 can also be a block shape, a hemispherical shape, etc.

[0108] As shown in Figure 5, the similarities between the second embodiment and the first embodiment of this disclosure will not be repeated here. The differences are as follows:

[0109] The contact bracket 331 includes two side plates 3311, a fixing plate 3312 and a connecting plate 3314. The two ends of the connecting plate 3314 along the third direction D3 are integrally connected to the ends of the two side plates 3311 away from the mounting base 332. The two side plates 3311 and the connecting plate 3314 form an inverted U-shape.

[0110] The fixing plate 3312 is connected to the mounting base 332. For example, the push rod 333, the fixing plate 3312, and the mounting base 332 are integrally molded by injection molding. The fixing plate 3312 extends from both ends of the mounting base 332 along the third direction D3, so that the two ends of the fixing plate 3312 are respectively connected to the ends of the two side plates 3311 away from the connecting plate 3314.

[0111] As shown in Figures 6 and 7, the similarities between the third embodiment and the first embodiment of this disclosure will not be repeated here. The differences are as follows:

[0112] The anti-rotation component 610 includes a connecting part 611 and a spring part 612. The connecting part 611 is connected to the side plate 3311, and the spring part 612 is connected to the connecting part 611 and is deformed by being pressed by the inner wall surface of the insulating cover 21. Each connecting part 611 has a hook 613, and two hooks 613 are respectively suspended from the lower edge of two mounting holes 3313 and are respectively pressed by two protrusions 3312a.

[0113] In this embodiment of the present disclosure, by utilizing the mating structure of the protrusion 3312a of the fixing plate 3312 and the mounting hole 3313 of the side plate 3311, the hook 613 of the anti-rotation component 610 is hung on the lower edge of the mounting hole 3313, and the protrusion 3312a presses against the hook 613. On the one hand, the anti-rotation component 610 can be firmly connected to the side plate 3311; on the other hand, without the need to add other connecting structures or connectors, the anti-rotation component 610 and the side plate 3311 can be connected, which is convenient for assembly and saves costs.

[0114] In one embodiment, the connecting portion 611 is connected to a plurality of spring portions 612 on one side along the second direction D2, and the plurality of spring portions 612 of the anti-rotation member 610 are arranged at intervals along the first direction D1.

[0115] Of course, in other embodiments, the anti-rotation member 610 may also have a spring section 612.

[0116] As an example, the spring portion 612 has an arcuate surface that contacts the second sidewall 2142. The arcuate surface design allows the spring portion 612 and the second sidewall 2142 to have line contact, which not only prevents rotation but also reduces the frictional resistance between the spring portion 612 and the second sidewall 2142 when the moving assembly 30 reciprocates along the second direction D2.

[0117] As shown in Figure 8, the similarities between the fourth embodiment and the third embodiment of this disclosure will not be repeated here. The difference is that the connecting part 611 is riveted to the side plate 3311.

[0118] In detail, the connecting part 611 and the side plate 3311 are provided with a riveting post on one and a riveting hole on the other, and the riveting post is riveted into the riveting hole.

[0119] For example, the outer side surface 3311b of the side plate 3311 is provided with a plurality of rivet posts, and the connecting part 611 has a plurality of rivet holes. The number of rivet posts and rivet holes are the same, and the plurality of rivet posts are riveted into the plurality of rivet holes respectively.

[0120] Of course, in another embodiment, the rivet post may protrude from the side surface of the connecting part 611 facing the side plate 3311, and the rivet hole is provided on the side plate 3311.

[0121] As shown in Figure 9, the similarities between the fifth embodiment and the fourth embodiment of this disclosure will not be repeated here. The differences are as follows:

[0122] The connecting part 611 is welded to the side plate 3311.

[0123] As shown in Figures 10 and 11, the similarities between the sixth embodiment and the third embodiment of this disclosure will not be repeated here, but the differences are as follows:

[0124] Each side plate 3311 is connected to at least two anti-rotation members 610, and at least two hooks 613 of the at least two anti-rotation members 610 are simultaneously suspended from the lower edge of the same mounting hole 3313 and are simultaneously pressed against by a protrusion 3312a of the fixing plate 3312.

[0125] For example, the number of anti-rotation components 610 on a side plate 3311 can be two, three, etc., and this disclosure does not make any special limitation on this.

[0126] As shown in Figure 12, the similarities between the seventh embodiment and the fourth embodiment of this disclosure will not be repeated here, but the differences are as follows:

[0127] Each side plate 3311 is connected to at least two anti-rotation components 610, and the connecting part 611 of each anti-rotation component 610 is riveted to the side plate 3311.

[0128] For example, the number of anti-rotation components 610 on a side plate 3311 can be two, three, etc., and this disclosure does not make any special limitation on this.

[0129] As shown in Figure 13, the similarities between the eighth embodiment and the fifth embodiment of this disclosure will not be repeated here, but the differences are as follows:

[0130] Each side plate 3311 is connected to at least two anti-rotation components 610, and the connecting part 611 of each anti-rotation component 610 is welded to the side plate 3311.

[0131] For example, the number of anti-rotation components 610 on a side plate 3311 can be two, three, etc., and this disclosure does not make any special limitation on this.

[0132] As shown in Figures 14 and 15, the similarities between the ninth embodiment of this disclosure and the above embodiments will not be repeated, but the differences are as follows:

[0133] The second sidewall 2142 has a sidewall body 21421 and a rib 21422. The rib 21422 protrudes from the inner surface of the sidewall body 21421 and extends along the second direction D2 for contacting the anti-rotation member 610. The inner surface of the sidewall body 21421 refers to the side surface of the sidewall body 21421 facing the contact support 331.

[0134] In this embodiment of the present disclosure, the anti-rotation component 610 contacts the rib 21422 instead of the sidewall body 21421. On the one hand, the rib 21422 can improve the structural strength of the insulating cover 21 and reduce the deformation of the insulating cover 21; on the other hand, the processing accuracy of the rib 21422 is easier to control, thereby improving the dimensional accuracy of the contact between the rib 21422 and the anti-rotation component 610.

[0135] Referring again to Figures 14 and 15, the raised rib 21422 has an abutment surface 21422a and a guide ramp 21422b. The abutment surface 21422a is used to abut against the anti-rotation member 610. The guide ramp 21422b is connected to the abutment surface 21422a and extends obliquely from the abutment surface 21422a toward the side wall body 21421 and away from the stationary contact 22, to guide the anti-rotation member 610 to move to the abutment surface 21422a. When the relay coil is de-energized, the anti-rotation member 610 does not contact the raised rib 21422.

[0136] In detail, when the relay coil is de-energized, the anti-rotation component 610 does not contact the protruding rib 21422. When the relay coil is energized, the moving assembly 30 begins to move. In the initial stage of the moving assembly 30's movement, the anti-rotation component 610 still does not contact the protruding rib 21422 to prevent contact friction between the anti-rotation component 610 and the protruding rib 21422 from affecting the normal movement of the moving assembly 30. As the moving assembly 30 continues to move, the guide slope 21422b first contacts the anti-rotation component 610 to guide it towards the contact surface 21422a. As the moving assembly 30 moves further, the anti-rotation component 610 moves from the guide slope 21422b to the contact surface 21422a. Under the pressure of the contact surface 21422a, the anti-rotation component 610 deforms, generating a rebound force, thereby preventing the contact support 331 from deflecting.

[0137] It is worth mentioning that when the moving component 30 drives the anti-rotation component 610 to start moving, and before the anti-rotation component 610 contacts the protruding rib 21422, if the contact support 331 deflects, the contact support 331 can be straightened by the action of the guide slope 21422b and the abutment surface 21422a.

[0138] As can be seen, the protruding rib 21422 is designed with a contact surface 21422a and a guide slope 21422b. On the one hand, the slope of the guide slope 21422b can play a corrective role during the assembly of the moving component 30 and the insulating cover 21. On the other hand, under the synergistic effect of the contact surface 21422a and the guide slope 21422b, the contact support 331 can be straightened and play an anti-deflection role.

[0139] It is understood that the anti-rotation component 610 of the ninth embodiment can be any of the anti-rotation components 610 described above, and will not be repeated here.

[0140] As shown in Figure 16, the similarities between the tenth embodiment of this disclosure and the above embodiments will not be repeated, but the differences are as follows:

[0141] Anti-rotation component 610 is connected to the second side wall 2142.

[0142] For example, the connection between the anti-rotation component 610 and the second sidewall 2142 can be achieved by welding, bonding, etc., which will not be listed in this disclosure.

[0143] It is understood that the anti-rotation component 610 of the tenth embodiment can be any of the anti-rotation components 610 described above, and will not be repeated here.

[0144] In summary, the relays of the present disclosure embodiments have at least the following advantages and beneficial effects:

[0145] In this embodiment of the relay, on the one hand, the anti-rotation structure 60 can restrict the contact support 331 of the moving component 30 from rotating around the axis of the moving component 30. The anti-rotation structure 60 can reduce the rotation amplitude of the moving component 30, thereby ensuring the consistency of the contact position between the moving contact 31 and the stationary contact 22, improving the stability of the contact resistance, and avoiding the problem of metal particles and / or ceramic powder being generated due to contact friction between the moving component 30 and the insulating cover 21 and falling onto the contact surface, resulting in increased contact resistance or even non-conduction, thus ensuring the reliability of the relay operation; on the other hand, the anti-rotation structure 60 and the contact... The bracket 331 is a split structure, which allows the anti-rotation structure 60 and the contact bracket 331 to have different stiffnesses. For example, the anti-rotation structure 60 has lower stiffness, while the contact bracket 331 has higher stiffness. The contact bracket 331 with higher stiffness is not easily deformed, which can ensure that the position of the moving contact 31 is not shifted by the deformation of the contact bracket 331, thereby ensuring the consistency and stability of the contact between the moving contact 31 and the stationary contact 22, and not affecting the effective operation of the relay. The anti-rotation structure 60 with lower stiffness has better resilience, which can prevent scratching the inner wall surface of the side wall 214 while providing anti-rotation force.

[0146] Furthermore, the anti-rotation component 610 is made of elastic materials such as rubber and plastic. During the reciprocating motion of the moving component 30, it can reduce the friction between the anti-rotation component 610 and the inner wall of the insulating cover 21, and also reduce the noise generated by the friction between the anti-rotation component 610 and the inner wall of the insulating cover 21.

[0147] It is understood that the various embodiments / implementations provided in this disclosure can be combined with each other without creating contradictions, and will not be described in detail here.

[0148] In the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0149] In the description of the embodiments of the application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the application.

[0150] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the claims. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0151] The above are merely preferred embodiments of the application examples and are not intended to limit the application examples. For those skilled in the art, the application examples can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the application examples should be included within the protection scope of the application examples.

Claims

1. A relay, characterized in that, include: Insulating cover, with sidewalls; A pair of stationary contacts are connected to the insulating cover and are spaced apart along a first direction; The moving component includes a moving contact and a contact support located within the insulating cover, wherein the two ends of the moving contact along the first direction are respectively used to contact or separate from a pair of stationary contacts; as well as An anti-rotation structure is disposed between the side wall and the contact support, and is a separate structure from the contact support, used to restrict the contact support from rotating around the axis of the moving component.

2. The relay according to claim 1, characterized in that, During overtravel, the anti-rotation structure comes into contact with the sidewall.

3. The relay according to claim 2, characterized in that, The anti-rotation structure is an elastic element; When the anti-rotation structure comes into contact with the sidewall, the anti-rotation structure is deformed by the pressure of the sidewall.

4. The relay according to claim 1, characterized in that, The stiffness of the anti-rotation structure is less than the stiffness of the contact support.

5. The relay according to any one of claims 1 to 4, characterized in that, The contact support includes two side plates, which are spaced apart along a third direction, and the movable contact is located between the two side plates; wherein, the movement direction of the movable component is defined as a second direction, and the first direction, the second direction, and the third direction are mutually perpendicular; The sidewall includes two second sidewalls disposed opposite to each other along the third direction, and the two side plates respectively correspond to the two second sidewalls; The anti-rotation structure includes at least two anti-rotation components, and at least one of the anti-rotation components is provided between the corresponding second sidewall and the side plate.

6. The relay according to claim 5, characterized in that, The anti-rotation component is connected to the side plate.

7. The relay according to claim 6, characterized in that, The number of anti-rotation components is two, which are respectively attached to the side surface of the two side plates facing away from the moving contact piece; The anti-rotation component is made of an elastic material.

8. The relay according to claim 6, characterized in that, The anti-rotation component includes a connecting part and a spring piece part. The connecting part is connected to the side plate, and the spring piece part is connected to the connecting part and is deformed by being squeezed by the side wall.

9. The relay according to claim 8, characterized in that, The contact support also includes a fixing plate, which has protrusions at both ends along the third direction. Each side plate has a mounting hole, and the two protrusions are respectively located within the two mounting holes. The movable contact is located within the space enclosed by the two side plates and the fixing plate. Each of the connecting parts has a hook, and at least one of the hooks is attached to the lower edge of the mounting hole and pressed against by the protrusion.

10. The relay according to claim 9, characterized in that, The connecting portion is connected to a plurality of spring pieces on one side along the second direction, and the plurality of spring pieces of the anti-rotation component are arranged at intervals along the first direction.

11. The relay according to claim 9, characterized in that, Each of the side plates is connected to at least two of the anti-rotation elements, and at least two of the hooks of the at least two of the anti-rotation elements are simultaneously suspended from the lower edge of the same mounting hole and simultaneously pressed against by one of the protrusions of the fixing plate.

12. The relay according to claim 8, characterized in that, The connecting part is riveted or welded to the side plate.

13. The relay according to any one of claims 6, 8-12, characterized in that, The second sidewall has a sidewall body and a rib. The rib protrudes from the inner surface of the sidewall body and extends along the second direction for contacting the anti-rotation component.

14. The relay according to claim 13, characterized in that, The rib has an abutting surface and a guide slope. The abutting surface is used to abut against the anti-rotation component. The guide slope is connected to the abutting surface and extends obliquely from the abutting surface toward the side wall body and away from the stationary contact, so as to guide the anti-rotation component to move to the abutting surface.

15. The relay according to claim 14, characterized in that, When the relay coil is de-energized, the anti-rotation component does not contact the protruding rib.

16. The relay according to claim 5, characterized in that, The anti-rotation component is connected to the second sidewall.

17. The relay according to any one of claims 1 to 4, characterized in that, The insulating cover also includes: The top wall is connected to a pair of stationary contacts; the side wall is connected to the top wall.

18. The relay according to claim 17, characterized in that, The sidewall includes two first sidewalls and two second sidewalls. The two first sidewalls are arranged opposite each other along the first direction, and the two second sidewalls are arranged opposite each other along the third direction. The two first sidewalls and the two second sidewalls are connected end to end to form a ring structure. The direction of motion of the moving component is defined as the second direction. The first direction, the second direction, and the third direction are all perpendicular to each other. The anti-rotation structure is disposed between the second sidewalls of the contact bracket.

19. The relay according to any one of claims 1 to 4, characterized in that, The moving assembly further includes a push rod, a mounting base, and a first elastic element. The mounting base is connected to one axial end of the push rod, the contact bracket is connected to the mounting base, and the first elastic element is located between the mounting base and the moving contact piece, for providing an elastic force to the moving contact piece toward the stationary contact.

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