Relay

Abstract

The utility model discloses a relay, which comprises an insulating cover, a pair of static contacts, a movable assembly and an anti-rotation structure, and is characterized in that the insulating cover is provided with a side wall, and the pair of static contacts are connected to the insulating cover and are arranged at intervals along a first direction; the moving assembly comprises a moving contact piece and a contact support which are located in the insulating cover. The two ends, in the first direction, of the moving contact piece are used for making contact with or being separated from the pair of static contacts respectively. The anti-rotation structure is arranged between the side wall and the contact support, and the anti-rotation structure and the contact support are of a split structure and are used for limiting the contact support from rotating around the axis of the moving assembly.

Description

Technical Field

[0001] The present application relates to the technical field of electronic control devices, and in particular to a relay. Background Art

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

[0003] A high-voltage DC relay is a type of relay. A high-voltage DC relay in the prior art includes a pair of static contacts, an insulating cover, a moving assembly, and a magnetic circuit. The moving assembly includes a moving contact piece, a push rod component, and an elastic component. The moving contact piece is mounted on the push rod component through the elastic component. The magnetic circuit includes a static iron core, a moving iron core, and a coil. The static iron core is fixedly arranged in the relay, and the moving iron core is connected to the push rod component. When the coil is energized, the static iron core can generate a magnetic attraction and attract the moving iron core to move, thereby driving the push rod component to move together with the moving contact piece to achieve contact closure.

[0004] In the related art, in order to limit the rotation range of the moving component around the axis of the push rod component, a convex rib is usually provided on the inner wall surface of the insulating cover so that a small gap is formed between the side surface of the moving component and the convex rib.

[0005] However, after the relay is opened and closed many times, the side of the moving component is likely to produce contact friction with the convex rib. On the one hand, as the number of frictions increases, the wear of the moving component increases, which in turn causes the matching clearance between the moving component and the convex rib to increase, causing the amplitude of the rotation of the moving component around the axis of the push rod component to increase, affecting the contact position of the moving contact piece and the static contact, resulting in unstable contact resistance. On the other hand, metal particles are likely to be generated after the moving component rubs against the convex rib. After the metal particles fall on the contact surface of the contact, it is easy to cause the contact resistance to increase or even cause the relay to fail to conduct. Utility Model Content

[0006] The embodiment of the present application provides a relay to improve the problem of unstable contact resistance or even failure of conduction of the relay existing in the related art.

[0007] The relay of the embodiment of the present application includes:

[0008] an insulating cover having side walls;

[0009] A pair of static contacts, connected to the insulating cover and arranged at intervals along a first direction;

[0010] a movable assembly, comprising a movable contact piece and a contact bracket located in the insulating cover, wherein two ends of the movable contact piece along the first direction are used to contact or separate with a pair of the stationary contacts respectively; and

[0011] The anti-rotation structure is arranged between the side wall and the contact support and is a separate structure from the contact support, and is used to limit the contact support from rotating around the axis of the moving component.

[0012] According to some embodiments of the present application, during the over-stroke process, the anti-rotation structure contacts the side wall.

[0013] According to some embodiments of the present application, the anti-rotation structure is an elastic member;

[0014] When the anti-rotation structure contacts the side wall, the anti-rotation structure is squeezed by the side wall and deformed.

[0015] According to some embodiments of the present application, the rigidity of the anti-rotation structure is smaller than the rigidity of the contact support.

[0016] According to some embodiments of the present application, the contact bracket includes two side plates, the two side plates are arranged at intervals along the third direction, and the movable contact piece 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 perpendicular to each other;

[0017] The side wall comprises two second side walls arranged opposite to each other along the third direction, and the two side panels correspond to the two second side walls respectively;

[0018] The anti-rotation structure includes at least two anti-rotation parts, and at least one of the anti-rotation parts is disposed between the corresponding second side wall and the side plate.

[0019] According to some embodiments of the present application, the anti-rotation component is connected to the side plate.

[0020] According to some embodiments of the present application, the number of the anti-rotation parts is two, which are respectively attached to the surface of one side of the two side plates facing away from the moving contact piece;

[0021] The anti-rotation component is made of elastic material.

[0022] According to some embodiments of the present application, the anti-rotation component includes a connecting portion and a spring portion, the connecting portion is connected to the side plate, the spring portion is connected to the connecting portion, and is squeezed by the side wall to generate deformation.

[0023] According to some embodiments of the present application, the contact bracket further includes a fixing plate, the fixing plate is provided with protrusions at both ends along the third direction, each of the side plates has a mounting hole, and the two protrusions are respectively confined to the two mounting holes; the moving contact piece is located in a space enclosed by the two side plates and the fixing plate;

[0024] Each of the connecting parts has a hook, and at least one of the hooks is hung on the lower edge of the mounting hole and is pressed by the protruding part.

[0025] According to some embodiments of the present application, a plurality of the elastic sheet portions are connected to one side of the connecting portion along the second direction, and the plurality of the elastic sheet portions of the anti-rotation component are arranged at intervals along the first direction.

[0026] According to some embodiments of the present application, each of the side panels is connected to at least two of the anti-rotation parts, and at least two of the hooks of at least two of the anti-rotation parts are simultaneously hung on the lower edge of the same mounting hole and are simultaneously pressed by one of the protrusions of the fixing plate.

[0027] According to some embodiments of the present application, the connecting portion is riveted or welded to the side panel.

[0028] According to some embodiments of the present application, the second side wall has a side wall body and a convex rib, wherein the convex rib is protruding from the inner surface of the side wall body and extends along the second direction for contacting the anti-rotation component.

[0029] According to some embodiments of the present application, the convex rib has an abutment surface and a guide slope, the abutment surface is used to abut against the anti-rotation part, the guide slope is connected to the abutment surface, and extends obliquely from the abutment surface toward the direction close to the side wall body and away from the static contact, for guiding the anti-rotation part to move to the abutment surface.

[0030] According to some embodiments of the present application, when the coil of the relay is powered off, the anti-rotation component does not contact the rib.

[0031] According to some embodiments of the present application, the anti-rotation component is connected to the second side wall.

[0032] According to some embodiments of the present application, the insulating cover further includes:

[0033] The top wall is connected with a pair of the static contacts; and the side wall is connected to the top wall.

[0034] According to some embodiments of the present application, the side wall includes two first side walls and two second side walls, the two first side walls are arranged opposite to each other along the first direction, the two second side walls are arranged opposite to each other along the third direction, and the two first side walls and the two second side walls are sequentially connected end to end to form an annular structure; wherein 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;

[0035] The anti-rotation structure is disposed between the second side walls of the contact support.

[0036] According to some embodiments of the present application, the dynamic component also includes a push rod, a mounting seat and a first elastic member, the mounting seat is connected to one axial end of the push rod, the contact bracket is connected to the mounting seat, and the first elastic member is located between the mounting seat and the dynamic contact piece, and is used to provide an elastic force to the dynamic contact piece to move toward the static contact.

[0037] One embodiment of the above application has at least the following advantages or beneficial effects:

[0038] In the relay of the embodiment of the present application, on the one hand, the anti-rotation structure can limit the rotation of the contact bracket around the axis of the moving component, reduce the rotation amplitude of the moving component, and thus ensure the consistency of the contact position between the moving contact piece and the static contact, improve the stability of the contact resistance, and at the same time avoid the problem that metal particles and / or ceramic powder are generated due to the contact friction between the moving component and the insulating cover and fall on the contact surface of the contact point, resulting in increased contact resistance or even non-conduction, thereby ensuring the reliability of the operation of the relay; on the other hand, the anti-rotation structure and the contact bracket are separate structures, so that the stiffness of the anti-rotation structure and the contact bracket can be designed to be different, for example, the stiffness of the anti-rotation structure is smaller, while the stiffness of the contact bracket is larger, so that the contact bracket with larger stiffness is not easy to deform, which can ensure that the position of the moving contact piece is not offset by the deformation of the bracket, thereby ensuring the consistency and stability of the contact between the moving contact piece and the static contact, and not affecting the effective operation of the relay; the anti-rotation structure with smaller stiffness has better resilience, and on the basis of providing anti-rotation force, it can also reduce or even avoid scratching the inner wall surface of the side wall.

[0039] Furthermore, the anti-rotation part is made of elastic materials such as rubber and plastic. During the reciprocating motion of the moving component, it can not only reduce the friction between the anti-rotation part and the inner wall of the insulating cover, but also reduce the noise generated by the friction between the anti-rotation part and the inner wall of the insulating cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is an exploded schematic diagram of a relay according to an exemplary embodiment.

[0041] Figure 2is a schematic top view of a relay according to an exemplary embodiment, in which a housing, a coil frame, a coil, a U-shaped yoke, and an arc extinguishing part are omitted.

[0042] Figure 3 is along Figure 2 Section view along the AA cutting line.

[0043] Figure 4 It is a three-dimensional schematic diagram of the anti-rotation structure and the moving component after being assembled in the first embodiment of the present application.

[0044] Figure 5 It is a three-dimensional schematic diagram of the anti-rotation structure and the moving component after being assembled in the second embodiment of the present application.

[0045] Figure 6 It is a three-dimensional schematic diagram of the anti-rotation structure and the moving component after being assembled in the third embodiment of the present application.

[0046] Figure 7 yes Figure 6 Schematic diagram of the decomposition.

[0047] Figure 8 It is a three-dimensional schematic diagram of the anti-rotation structure and the moving component after being assembled in the fourth embodiment of the present application.

[0048] Fig. 9 It is a three-dimensional schematic diagram of the anti-rotation structure and the moving component after being assembled in the fifth embodiment of the present application.

[0049] Fig.10 It is a three-dimensional schematic diagram of the anti-rotation structure and the moving component after being assembled according to the sixth embodiment of the present application.

[0050] Fig.11 yes Fig.10 Schematic diagram of the decomposition.

[0051] Fig.12 It is a three-dimensional schematic diagram of the anti-rotation structure and the moving component after being assembled in the seventh embodiment of the present application.

[0052] Fig.13 It is a three-dimensional schematic diagram of the anti-rotation structure and the moving component after being assembled in the eighth embodiment of the present application.

[0053] Fig.14 is along Figure 2 The cross-sectional view is taken along the BB section line, and the cross-sectional view shows the insulating cover of the ninth embodiment of the present application, wherein the anti-rotation part is not in contact with the convex rib.

[0054] Fig.15 is along Figure 2 The cross-sectional view is taken along the BB section line, and the cross-sectional view shows the insulating cover of the ninth embodiment of the present application, wherein the anti-rotation part is in contact with the convex rib.

[0055] Fig.16 is along Figure 2 The cross-sectional view is taken along the BB section line, and the cross-sectional view shows a schematic diagram of the anti-rotation component being connected to the insulating cover in the tenth embodiment of the present application. DETAILED DESCRIPTION

[0056] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0057] It is understood that the terms "including" and "having" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or components that are inherent to these processes, methods, products, or devices.

[0058] like Figures 1 to 3 As shown, the relay of the embodiment of the present application includes a housing 10, an insulating cover 21, a yoke iron plate 25, a pair of stationary contacts 22, an arc extinguishing part 26, a moving component 30 and a magnetic circuit part 40. The insulating cover 21, the yoke iron plate 25, a pair of stationary contacts 22, the arc extinguishing part 26, the moving component 30 and the magnetic circuit part 40 are arranged in the housing 10.

[0059] Among them, the housing 10 includes an upper shell 11 and a bottom shell 12, and the upper shell 11 and the bottom shell are connected to form a chamber for accommodating an insulating cover 21, a yoke iron plate 25, a pair of static contacts 22, an arc extinguishing part 26, a moving component 30 and a magnetic circuit part 40.

[0060] like Figure 3 As shown, the insulating cover 21 has an inner cavity 212, a pair of static contacts 22 are installed on the top of the insulating cover 21, at least part of each static contact 22 extends into the inner cavity 212 of the insulating cover 21, and a static contact point is also provided at the bottom of each static contact 22, and the static contact point can be integrally or separately provided at the bottom of the static contact 22. One static contact 22 serves as a terminal for current to flow in, and the other static contact 22 serves as a terminal for current to flow out.

[0061] In the embodiment of the present application, two openings 211 are formed on the top of the insulating cover 21, and each opening 211 is connected to the inner cavity 212. A pair of static contacts 22 are respectively disposed in the two openings 211. Moreover, each static contact 22 and the insulating cover 21 can be connected by welding, but the present invention is not limited thereto.

[0062] It is understandable that the insulating cover 21 may 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 may also be made of plastic material.

[0063] In an embodiment of the present application, the insulating cover 21 is made of ceramic material, and the insulating cover 21 is connected to the yoke iron plate 25 through a frame sheet 24. The frame sheet 24 can be a metal piece with an annular structure, such as an iron-nickel alloy. One end of the frame sheet 24 is connected to the opening edge of the insulating cover 21, for example, by laser welding, brazing, resistance welding, gluing, etc. The other end of the frame sheet 24 is connected to the yoke iron plate 25, which can also be done by laser welding, brazing, resistance welding, gluing, etc. A frame sheet 24 is arranged between the insulating cover 21 and the yoke iron plate 25 to facilitate the connection between the insulating cover 21 and the yoke iron plate 25.

[0064] 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 .

[0065] The top wall 213 is provided with two openings 211 , and a pair of static contacts 22 are respectively disposed in the two openings 211 . Each static contact 22 and the top wall 213 may be connected by welding, but the present invention is not limited thereto.

[0066] Please continue reading Figure 3 The moving assembly 30 includes a moving contact piece 31 , a first elastic member 32 and a push rod member 33 .

[0067] For the convenience of explanation, the arrangement direction of the pair of stationary contacts 22 is defined as the first direction D1, and the movement direction of the moving assembly 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.

[0068] The movable contact piece 31 is disposed in the insulating cover 21 , and two ends of the movable contact piece 31 along the first direction D1 are respectively used to contact or separate from the bottom of a pair of stationary contacts 22 .

[0069] The push rod member 33 is movably disposed in 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 facing away from the stationary contact 22 .

[0070] The movable contact piece 31 is movably mounted on the portion of the push rod member 33 extending from the side surface of the yoke iron plate 25 toward the stationary contact 22. The first elastic member 32 is connected to the push rod member 33 and the movable contact piece 31, and is used to apply an elastic force toward the stationary contact 22 to the movable contact piece 31 to provide contact pressure.

[0071] As an example, the first elastic member 32 is a spring or a leaf spring, but is not limited thereto. In addition, the number of the first elastic member 32 may be one or more. When the number of the first elastic member 32 is multiple, the multiple first elastic members 32 may all be springs, or all be leaf springs, or may be a combination of leaf springs and springs, and the present application does not make any special limitation on this.

[0072] The side surface of the yoke iron plate 25 facing away from the static contact 22 is also covered with a metal cover 27, and the metal cover 27 covers the first through hole 251 of the yoke iron plate 25. The push rod member 33 extending from the side surface of the yoke iron plate 25 facing away from the static contact 22 is inserted into the metal cover 27.

[0073] Please continue reading Figure 1 and Figure 3 The magnetic circuit part 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 in a hollow cylindrical shape and is made of insulating material. The coil frame 43 is located on the side of the yoke iron 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.

[0074] The static iron core 42 is fixedly disposed in the metal cover 27, and part of the static iron core 42 is inserted into the first through hole 251. The static iron core 42 has a second through hole 421, and the second through hole 421 corresponds to the position of the first through hole 251, so that the push rod member 33 can be movably penetrated in the first through hole 251 and the second through hole 421. The moving iron core 41 is movably disposed in the metal cover 27, and is arranged relative to the static iron core 42 in the second direction D2. The moving iron core 41 is connected to the push rod member 33, and is used to be attracted by the static 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.

[0075] like Figure 3 As shown, the magnetic circuit portion 40 further includes a second elastic member 46, which is located in the metal cover 27 and disposed between the static iron core 42 and the moving iron core 41, and is used to reset the moving iron core 41 when the coil 44 is de-energized.

[0076] In one embodiment, the second elastic member 46 is a spring and is sleeved on the outer circumference of the push rod member 33 , but the present invention is not limited thereto.

[0077] 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 member 33 to move upward. When the moving contact piece 31 contacts the stationary contact 22, the moving contact piece 31 is stopped by the stationary contact 22, and the push rod member 33 will continue to move upward until the overtravel is completed.

[0078] During the overtravel process, the first elastic member 32 is squeezed by the push rod member 33 and can provide elastic force to the movable contact piece 31 to provide contact point pressure.

[0079] like Figure 1 and Figure 3 As shown, the magnetic circuit part 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 the two 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 arranged on the side of the coil frame 43 facing away from the static contact 22, and the ends of the two side yoke plates 472 away from the bottom yoke plate 471 are respectively connected to the two ends of the yoke plate 25 along the first direction D1. The coil 44, the coil frame 43, the metal cover 27 and the moving iron core 41 are accommodated in the space surrounded by the yoke plate 25 and the bottom yoke plate 471 and the two side yoke plates 472 of the U-shaped yoke 47.

[0080] like Figure 1 As shown, the arc extinguishing part 26 includes a permanent magnet 262, and the permanent magnet 262 is arranged on the outer side of the insulating cover 21. By arranging 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 piece 31. Therefore, through the effect of the magnetic field, the arc generated between the stationary contact 22 and the moving contact 31 will be stretched in a direction away from each other, thereby achieving arc extinguishing.

[0081] The arc extinguishing part 26 further includes a yoke clamp 261, and a permanent magnet 262 is disposed between a side surface of the yoke clamp 261 facing the insulating cover 21 and an outer peripheral surface of the insulating cover 21. By designing that the yoke clamp 261 surrounds the permanent magnet 262, it is possible to prevent the magnetic field generated by the permanent magnet 262 from spreading outward and affecting the arc extinguishing effect.

[0082] 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 alloys thereof.

[0083] It is understandable that the number of the yoke clips 261 can be one or two. When the number of the yoke clips 261 is one, the yoke clip 261 forms an annular structure surrounding the outer periphery of the insulating cover 21. When the number of the yoke clips 261 is two, each yoke clip 261 can be U-shaped and arranged opposite to each other along the first direction D1, and the two yoke clips 261 respectively surround the two ends of the insulating cover 21 along the first direction D1.

[0084] Please return to Figure 2The side wall 214 includes two first side walls 2141 and two second side walls 2142. The two first side walls 2141 are arranged opposite to each other along the first direction D1, and the two second side walls 2142 are arranged opposite to each other along the third direction D3. The two first side walls 2141 and the two second side walls 2142 are connected end to end in sequence to form an annular structure.

[0085] It is understandable that the present application does not specifically limit the shape of the side wall 214 . For example, the annular structure formed by the side wall 214 may be rectangular, circular, elliptical, etc.

[0086] like Figure 4 As shown, the push rod member 33 includes a push rod 333, a mounting seat 332 and a contact bracket 331. The mounting seat 332 is connected to one axial end of the push rod 333, and the contact bracket 331 is connected to the mounting seat 332. The push rod 333 is movably arranged in the first through hole 251 along the second direction D2. The moving contact piece 31 is arranged in the contact bracket 331, and the first elastic member 32 is arranged between the moving contact piece 31 and the mounting seat 332. The relay of the embodiment of the present application also includes an anti-rotation structure 60, which is arranged between the second side wall 2142 and the contact bracket 331, and is a separate structure from the contact bracket 331, and is used to limit the contact bracket 331 from rotating around the axis of the component 30.

[0087] In the relay of the embodiment of the present application, on the one hand, the anti-rotation structure 60 can limit the rotation of the contact bracket 331 around the axis of the moving component 30, and 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 piece 31 and the static contact 22, improving the stability of the contact resistance, and at the same time avoiding the problem that metal particles and / or ceramic powder are generated and fall on the contact surface of the contact point due to the contact friction between the moving component 30 and the insulating cover 21, resulting in increased contact resistance or even non-conduction, thereby ensuring the reliability of the relay operation; on the other hand, the anti-rotation structure 60 and the contact bracket 3 31 is a split structure, so that the stiffness of the anti-rotation structure 60 and the contact bracket 331 can be designed to be different. For example, the stiffness of the anti-rotation structure 60 is smaller, while the stiffness of the contact bracket 331 is larger. In this way, the contact bracket 331 with larger stiffness is not easy to deform, which can ensure that the position of the moving contact piece 31 is not offset by the deformation of the contact bracket 331, thereby ensuring the consistency and stability of the contact between the moving contact piece 31 and the static contact 22, and does not affect the effective operation of the relay; the anti-rotation structure 60 with smaller stiffness has better resilience, and on the basis of providing anti-rotation force, it can also avoid scratching the inner wall surface of the side wall 214.

[0088] like Figure 4As shown, the contact support 331 includes two side plates 3311, one end of the two side plates 3311 along the second direction D2 is connected to the mounting seat 332, and the two side plates 3311 are arranged at intervals along the third direction D3, and 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.

[0089] The mounting seat 332 may be made of plastic material, and the two side panels 3311 , the push rod 333 and the mounting seat 332 may be integrally formed by injection molding, but the present invention is not limited thereto.

[0090] Optionally, a connecting plate 3314 may be connected between the two side plates 3311, and both ends of the connecting plate 3314 along the third direction D3 are integrally connected to one end of the two side plates 3311 along the second direction D2, and the mounting seat 332 is coated on the outer periphery of the connecting plate 3314 and on the connection position between the connecting plate 3314 and the side plates 3311. In the embodiment of the present application, the two side plates 3311 and the connecting plate 3314 form a U-shape.

[0091] The contact support 331 further includes a fixing plate 3312, the two ends of which along the third direction D3 are respectively connected to one end of the two side plates 3311 away from the connecting plate 3314. The movable contact piece 31 and the first elastic member 32 are located in a space surrounded by the fixing plate 3312, the two side plates 3311 and the mounting seat 332.

[0092] In one embodiment, the fixing plate 3312 is provided with protrusions 3312a at both ends along the third direction D3, each side plate 3311 has a mounting hole 3313 penetrating the inner side surface 3311a and the outer side surface 3311b, and the two protrusions 3312a are respectively confined in the two mounting holes 3313.

[0093] Please continue reading Figure 4 The anti-rotation structure 60 includes at least two anti-rotation components 610 , and at least one anti-rotation component 610 is disposed between the corresponding second side wall 2142 and the side plate 3311 .

[0094] As an example, the anti-rotation member 610 is connected to the side plate 3311, and during the overtravel process, the anti-rotation member 610 contacts the second side wall 2142. It is understandable that after the anti-rotation member 610 contacts the second side wall 2142, the anti-rotation member 610 can effectively limit the contact bracket 331 from rotating.

[0095] In addition, the side plate 3311 of the contact support 331 is located in the middle and upper position of the moving assembly 30, and the anti-rotation member 610 is connected to the side plate 3311, which can further ensure the balance of the contact support 331 along the third direction D3. At the same time, the anti-rotation member 610 is connected to the side plate 3311, so that the side plate 3311 can absorb the vibration transmitted by the anti-rotation member 610 to avoid affecting the stability of the position of the moving contact piece 31.

[0096] It should be noted that, during the overtravel process, the "contact" between the anti-rotation member 610 and the second side wall 2142 should be understood as active contact, that is, when the moving assembly 30 is not deflected and in a normal motion state, the anti-rotation member 610 is in contact with the second side wall 2142, rather than when the moving assembly 30 is deflected, the anti-rotation member 610 contacts the second side wall 2142. The anti-rotation member 610 of the present application adopts an active contact design with the second side wall 2142, which can effectively inhibit the deflection of the moving assembly 30 and reduce the amplitude of the deflection of the moving assembly 30.

[0097] Among them, the contact between the anti-rotation part 610 and the second side wall 2142 can include two situations: the first is that the anti-rotation part 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 coil of the relay is powered off, the anti-rotation part 610 is not in contact with the second side wall 2142, and when the coil of the relay is powered on, the moving component 30 moves a certain distance before the anti-rotation part 610 contacts the second side wall 2142 and maintains contact until the moving iron core 41 contacts the static iron core 42.

[0098] The anti-rotation member 610 is an elastic member. When the anti-rotation member 610 contacts the second side wall 2142, the anti-rotation member 610 is squeezed by the second side wall 2142 and deforms. After the anti-rotation member 610 is deformed, it can generate a rebound force to further limit the deflection of the contact bracket 331.

[0099] As an example, the rigidity of the anti-rotation member 610 is smaller than the rigidity of the contact support 331. The anti-rotation member 610 and the contact support 331 are separate structures, which facilitates the differentiation of the rigidity of the anti-rotation member 610 and the contact support 331.

[0100] 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 can reduce the contact friction between the anti-rotation member 610 and the second side wall 2142 and reduce the noise generated by the friction between the anti-rotation member 610 and the inner wall surface of the second side wall 2142 during the reciprocating motion of the moving component 30.

[0101] It is understandable that the rigidity of the anti-rotation member 610 is smaller than that of the contact bracket 331 , which can take into account the stable supporting function of the contact bracket 331 and the function of the anti-rotation member 610 being deformed by being squeezed to provide a rebound force.

[0102] It should be noted that designing the stiffness of the anti-rotation component 610 to be smaller than the stiffness of the contact bracket 331 is not limited to setting the materials of the anti-rotation component 610 and the contact bracket 331 to be different. For example, in other embodiments, it can also be designed that: under the premise of the same material, the thickness of the anti-rotation component 610 is smaller than the thickness of the side plate 3311 of the contact bracket 331, or the anti-rotation component 610 and the contact bracket 331 have different shapes.

[0103] It is understandable that the number of the anti-rotation member 610 provided on each side plate 3311 may be one or more, and more means more than two. In the embodiment of the present application, each side plate 3311 is connected to one anti-rotation member 610 .

[0104] Furthermore, at least one anti-rotation member 610 is provided on the side where the outer side surface 3311b of each side plate 3311 is located. Figure 4 As shown, there are two anti-rotation parts 610, and each anti-rotation part 610 is flat, and the two anti-rotation parts 610 are respectively attached to the two outer side surfaces 3311b. The anti-rotation parts 610 and the outer side surfaces 3311b of the side panels 3311 can be connected by bonding, clamping, or integral injection molding, but not limited thereto.

[0105] 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 may also be block-shaped, hemispherical, etc.

[0106] like Figure 5 As shown, the similarities between the second embodiment of the present application and the first embodiment are not repeated here, and the differences are as follows:

[0107] The contact support 331 includes two side plates 3311, a fixing plate 3312 and a connecting plate 3314. Both ends of the connecting plate 3314 along the third direction D3 are integrally connected to one end of the two side plates 3311 away from the mounting seat 332. The two side plates 3311 and the connecting plate 3314 form an inverted U shape.

[0108] The fixing plate 3312 is connected to the mounting seat 332. For example, the push rod 333, the fixing plate 3312 and the mounting seat 332 are integrally formed by injection molding. Both ends of the fixing plate 3312 along the third direction D3 extend out of the outer surface of the mounting seat 332, so that both ends of the fixing plate 3312 are respectively connected to one end of the two side plates 3311 away from the connecting plate 3314.

[0109] like Figure 6 and Figure 7As shown, the similarities between the third embodiment of the present application and the first embodiment are not repeated here, and the differences are as follows:

[0110] The anti-rotation member 610 includes a connecting portion 611 and a spring portion 612. The connecting portion 611 is connected to the side plate 3311, and the spring portion 612 is connected to the connecting portion 611 and is deformed by being squeezed by the inner wall surface of the insulating cover 21. Each connecting portion 611 has a hook 613, and the two hooks 613 are respectively suspended on the lower edges of the two mounting holes 3313 and are respectively pressed by the two protrusions 3312a.

[0111] In the embodiment of the present application, the hook 613 of the anti-rotation component 610 is hung on the lower edge of the mounting hole 3313 by utilizing the matching structure of the protrusion 3312a of the fixing plate 3312 and the mounting hole 3313 of the side plate 3311, and the protrusion 3312a presses 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, the anti-rotation component 610 and the side plate 3311 can be connected without adding other connecting structures or connecting parts, which is convenient for assembly and saves costs.

[0112] In one embodiment, a plurality of spring pieces 612 are connected to one side of the connection portion 611 along the second direction D2 , and the plurality of spring pieces 612 of the anti-rotation component 610 are arranged at intervals along the first direction D1 .

[0113] Of course, in other embodiments, the anti-rotation component 610 may also have a spring piece portion 612 .

[0114] As an example, the spring piece portion 612 has an arc surface in contact with the second side wall 2142. The design of the arc surface allows the spring piece portion 612 to be in line contact with the second side wall 2142, which not only prevents rotation, but also reduces the friction resistance between the spring piece portion 612 and the second side wall 2142 when the moving assembly 30 reciprocates along the second direction D2.

[0115] like Figure 8 As shown, the similarities between the fourth embodiment of the present application and the third embodiment are not repeated here, and the difference lies in that the connecting portion 611 is riveted to the side plate 3311 .

[0116] Specifically, one of the connecting portion 611 and the side plate 3311 is provided with a rivet post, and the other is provided with a rivet hole, and the rivet post is riveted into the rivet hole.

[0117] For example, a plurality of rivet columns are protruded from the outer side surface 3311 b of the side plate 3311 , and the connecting portion 611 has a plurality of rivet holes. The number of the rivet columns is the same as the number of the rivet holes, and the plurality of rivet columns are correspondingly riveted into the plurality of rivet holes.

[0118] Of course, in another embodiment, the riveting column can be protruded from a side surface of the connecting portion 611 facing the side plate 3311 , and the riveting hole is provided on the side plate 3311 .

[0119] like Fig. 9 As shown, the similarities between the fifth embodiment of the present application and the fourth embodiment are not repeated here, and the difference lies in that:

[0120] The connecting portion 611 is welded to the side plate 3311 .

[0121] like Fig.10 and Fig.11 As shown, the similarities between the sixth embodiment of the present application and the third embodiment are not repeated here, and the difference lies in that:

[0122] Each side plate 3311 is connected to at least two anti-rotation members 610 . At least two hooks 613 of at least two anti-rotation members 610 are simultaneously hung on the lower edge of the same mounting hole 3313 and are simultaneously pressed by a protrusion 3312 a of the fixing plate 3312 .

[0123] For example, the number of the anti-rotation components 610 on a side plate 3311 may be two, three, etc., and this application does not impose any particular limitation on this.

[0124] like Fig.12 As shown, the similarities between the seventh embodiment of the present application and the fourth embodiment are not repeated here, and the difference lies in that:

[0125] Each side plate 3311 is connected to at least two anti-rotation components 610 , and the connecting portion 611 of each anti-rotation component 610 is riveted to the side plate 3311 .

[0126] For example, the number of the anti-rotation components 610 on a side plate 3311 may be two, three, etc., and this application does not impose any particular limitation on this.

[0127] like Fig.13 As shown, the similarities between the eighth embodiment of the present application and the fifth embodiment are not repeated here, and the differences are as follows:

[0128] Each side plate 3311 is connected to at least two anti-rotation components 610 , and the connecting portion 611 of each anti-rotation component 610 is welded to the side plate 3311 .

[0129] For example, the number of the anti-rotation components 610 on a side plate 3311 may be two, three, etc., and this application does not impose any particular limitation on this.

[0130] like Fig.14 and Fig.15 As shown, the same points as the above-mentioned embodiments in the ninth embodiment of the present application will not be repeated, and the difference lies in that:

[0131] The second side wall 2142 has a side wall body 21421 and a convex rib 21422. The convex rib 21422 is convexly disposed on the inner surface of the side wall body 21421 and extends along the second direction D2 for contacting the anti-rotation member 610. The inner surface of the side wall body 21421 refers to a side surface of the side wall body 21421 facing the contact support 331.

[0132] In the embodiment of the present application, the anti-rotation component 610 contacts the rib 21422 instead of the side wall body 21421. On the one hand, the provision of 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.

[0133] Continue reading Fig.14 and Fig.15 The convex rib 21422 has a contact surface 21422a and a guide slope 21422b, wherein the contact surface 21422a is used to contact the anti-rotation member 610, and the guide slope 21422b is connected to the contact surface 21422a and extends obliquely from the contact surface 21422a toward the direction close to the side wall body 21421 and away from the static contact 22, and is used to guide the anti-rotation member 610 to move to the contact surface 21422a. When the coil of the relay is powered off, the anti-rotation member 610 does not contact the convex rib 21422.

[0134] In detail, when the coil of the relay is powered off, the anti-rotation member 610 does not contact the convex rib 21422. When the coil of the relay is powered on, the moving assembly 30 begins to move. In the initial stage of the moving assembly 30 starting to move, the anti-rotation member 610 still does not contact the convex rib 21422, so as to prevent the normal movement of the moving assembly 30 from being affected by the contact friction between the anti-rotation member 610 and the convex rib 21422. As the moving assembly 30 continues to move, the guide slope 21422b first contacts the anti-rotation member 610 to guide the anti-rotation member 610 to move toward the abutment surface 21422a. As the moving assembly 30 moves further, the anti-rotation member 610 moves from the guide slope 21422b to the abutment surface 21422a. The anti-rotation member 610 is deformed under the pressure of the abutment surface 21422a to form a rebound force, thereby preventing the contact bracket 331 from deflecting.

[0135] It is worth mentioning that the moving assembly 30 drives the anti-rotation member 610 to start moving, and before the anti-rotation member 610 contacts the rib 21422, if the contact bracket 331 is deflected, the contact bracket 331 can be returned to the original position through the action of the guiding slope 21422b and the abutting surface 21422a.

[0136] It can be seen that the rib 21422 is designed with a contact surface 21422a and a guide slope 21422b. On the one hand, the inclination of the guide slope 21422b can play a correction role during the assembly process of the movable component 30 and the insulating cover 21; on the other hand, under the synergistic action of the abutment surface 21422a and the guide slope 21422b, the contact bracket 331 can be returned to the center and play an anti-deflection role.

[0137] It can be understood that the anti-rotation component 610 of the ninth embodiment can adopt the anti-rotation component 610 of any of the above embodiments, which will not be described in detail here.

[0138] like Fig.16 As shown, the similarities between the tenth embodiment of the present application and the above embodiments are not repeated here, and the difference lies in that:

[0139] The anti-rotation component 610 is connected to the second side wall 2142 .

[0140] For example, the anti-rotation component 610 and the second side wall 2142 may be connected by welding, bonding, etc., which will not be listed one by one in this application.

[0141] It can be understood that the anti-rotation component 610 of the tenth embodiment can adopt the anti-rotation component 610 of any of the above embodiments, which will not be described in detail here.

[0142] In summary, the relay of the embodiment of the present application has at least the following advantages and beneficial effects:

[0143] In the relay of the embodiment of the present application, on the one hand, the anti-rotation structure 60 can limit the contact bracket 331 of the moving component 30 from rotating around the axis of the moving component 30, and 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 piece 31 and the static contact 22, improving the stability of the contact resistance, and at the same time avoiding the problem that metal particles and / or ceramic powder are generated and fall on the contact surface of the contact due to the contact friction between the moving component 30 and the insulating cover 21, resulting in increased contact resistance or even non-conduction, thereby ensuring the reliability of the relay operation; on the other hand, the anti-rotation structure 60 and the contact bracket 331 of the moving component 30 can reduce the rotation amplitude of the moving component 30, thereby ensuring the consistency of the contact position between the moving contact piece 31 and the static contact 22, improving the stability of the contact resistance, and avoiding the problem that metal particles and / or ceramic powder are generated and fall on the contact surface due to the contact friction between the moving component 30 and the insulating cover 21, thereby ensuring the reliability of the relay operation; on the other hand, the anti-rotation structure 60 and the contact bracket 331 of the moving component 30 can reduce the rotation amplitude of the moving component 30, thereby ensuring the consistency of the contact position between the moving contact piece 31 and the static contact 22, improving the stability of the contact resistance, and preventing the contact friction between the moving component 30 and the insulating cover 21 from causing the contact resistance to increase or even non-conduction, thereby ensuring the reliability of the relay operation. The bracket 331 is a split structure, so that the stiffness of the anti-rotation structure 60 and the contact bracket 331 can be designed to be different. For example, the stiffness of the anti-rotation structure 60 is smaller, while the stiffness of the contact bracket 331 is larger. In this way, the contact bracket 331 with larger stiffness is not easily deformed, which can ensure that the position of the moving contact piece 31 is not offset by the deformation of the contact bracket 331, thereby ensuring the consistency and stability of the contact between the moving contact piece 31 and the static contact 22, and does not affect the effective operation of the relay; the anti-rotation structure 60 with smaller stiffness has better resilience, and on the basis of providing anti-rotation force, it can also avoid scratching the inner wall surface of the side wall 214.

[0144] Furthermore, the anti-rotation part 610 is made of elastic materials such as rubber and plastic. During the reciprocating motion of the moving component 30, it can not only reduce the friction between the anti-rotation part 610 and the inner wall surface of the insulating cover 21, but also reduce the noise generated by the friction between the anti-rotation part 610 and the inner wall surface of the insulating cover 21.

[0145] It is understandable that the various embodiments / implementations provided in the present application can be combined with each other without causing any contradiction, and will not be illustrated one by one here.

[0146] In the application embodiments, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the application embodiments can be understood according to the specific circumstances.

[0147] In the description of the application embodiments, it should be understood that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the application embodiments and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the application embodiments.

[0148] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the application embodiment. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0149] The above are only preferred embodiments of the application embodiments and are not intended to limit the application embodiments. For those skilled in the art, the application embodiments may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application embodiments shall be included in the protection scope of the application embodiments.

Claims

1. A relay, characterized in that: include: an insulating cover having side walls; A pair of static contacts, connected to the insulating cover and arranged at intervals along a first direction; A moving assembly, comprising a moving contact piece and a contact bracket located in the insulating cover, wherein two ends of the moving contact piece along the first direction are used to contact or separate with a pair of the stationary contacts respectively; as well as The anti-rotation structure is arranged between the side wall and the contact support and is a separate structure from the contact support, and is used to limit the contact support from rotating around the axis of the moving component.

2. The relay according to claim 1, characterized in that: During the overtravel process, the anti-rotation structure contacts the side wall.

3. The relay according to claim 2, characterized in that: The anti-rotation structure is an elastic member; When the anti-rotation structure contacts the side wall, the anti-rotation structure is squeezed by the side wall and deformed.

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

5. The relay according to any one of claims 1 to 4, characterized in that: The contact support comprises two side plates, the two side plates are arranged at intervals along the third direction, and the movable contact piece 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 in pairs; The side wall comprises two second side walls arranged opposite to each other along the third direction, and the two side panels correspond to the two second side walls respectively; The anti-rotation structure includes at least two anti-rotation parts, and at least one of the anti-rotation parts is disposed between the corresponding second side wall 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: There are two anti-rotation parts, which are respectively attached to the surfaces of the two side plates facing away from the moving contact piece; The anti-rotation component is made of elastic material.

8. The relay according to claim 6, characterized in that: The anti-rotation component includes a connecting portion and a spring sheet portion, wherein the connecting portion is connected to the side plate, and the spring sheet portion is connected to the connecting portion and is squeezed by the side wall to generate deformation.

9. The relay according to claim 8, characterized in that: The contact support further comprises a fixing plate, the fixing plate is provided with protrusions at both ends along the third direction, each of the side plates has a mounting hole, and the two protrusions are respectively confined to the two mounting holes; the moving contact piece is located in 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 hung on the lower edge of the mounting hole and is pressed by the protruding part.

10. The relay according to claim 9, characterized in that: A plurality of the elastic sheet portions are connected to one side of the connecting portion along the second direction, and the plurality of the elastic sheet portions 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 anti-rotation parts, and at least two hooks of at least two anti-rotation parts are simultaneously hung on the lower edge of the same mounting hole and are simultaneously pressed by one of the protrusions of the fixing plate.

12. The relay according to claim 8, characterized in that The connecting portion 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 side wall has a side wall body and a convex rib. The convex rib is convexly arranged on the inner surface of the side wall body and extends along the second direction for contacting the anti-rotation component.

14. The relay according to claim 13, characterized in that: The convex rib has an abutment surface and a guide slope, the abutment surface is used to abut against the anti-rotation part, the guide slope is connected to the abutment surface, and extends obliquely from the abutment surface toward the direction close to the side wall body and away from the static contact, for guiding the anti-rotation part to move to the abutment surface.

15. The relay according to claim 14, characterized in that: When the coil of the relay is powered off, the anti-rotation component does not contact the convex rib.

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

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 with a pair of the static contacts; and the side wall is connected to the top wall.

18. The relay according to claim 17, characterized in that: The side wall includes two first side walls and two second side walls, the two first side walls are arranged opposite to each other along the first direction, the two second side walls are arranged opposite to each other along the third direction, and the two first side walls and the two second side walls are connected end to end in sequence to form an annular structure; wherein 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; The anti-rotation structure is disposed between the second side walls of the contact support.

19. The relay according to any one of claims 1 to 4, characterized in that: The moving assembly also includes a push rod, a mounting seat and a first elastic member, the mounting seat is connected to one axial end of the push rod, the contact bracket is connected to the mounting seat, and the first elastic member is located between the mounting seat and the moving contact piece, and is used to provide an elastic force to the moving contact piece to move toward the static contact.

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