Relay

Abstract

The relay comprises a shell, a contact piece and a limiting piece, and the shell is provided with a first side wall perpendicular to the X-axis direction; the contact piece comprises a first static contact, a contact piece body and a connecting terminal which are fixedly connected with one another; the first static contact is located in the shell and is suitable for being pressed against in the direction perpendicular to the Z-axis direction. The contact body penetrates through the first side wall in the X-axis direction and is in limiting fit with the shell in the Y-axis direction, and the connecting terminal is fixedly connected with the part, located outside the shell, of the contact body; and the limiting piece is fixedly connected with the contact piece body and is provided with a limiting part which is matched with the first side wall in a rotation stopping manner so as to limit the contact piece body to swing around an axis extending along the Z-axis direction. The contact is stable in structure and not easy to shake.

Description

Technical Field

[0001] The present invention relates to the field of relays, and in particular to a relay. Background Art

[0002] A relay is an electronic switch that connects and disconnects the load circuit. The relay includes a housing and a contact part. The housing is used to install various functional components. The contact part includes a contact piece that penetrates the side wall of the housing. The part inside the housing is provided with a static contact to connect or disconnect with the moving contact. The housing is provided with a connection terminal that is electrically connected to the outside.

[0003] Generally speaking, since the abutment of the moving contact against the static contact and the locking stress when the connection terminal is locked with the external device may affect the stability of the contact piece, when the contact piece is installed on the housing, it is necessary to form a limit fit with the housing in the contact direction of the moving and static contacts to maintain stability and ensure that the contact gap, contact pressure and working parameters of the magnetic circuit part are not affected. In the prior art, the limit fit method of the contact piece and the housing is specifically that the part of the contact piece that passes through the side wall of the housing is limitedly matched with the side wall of the housing, and the end of the contact piece located in the housing is also limitedly matched with the housing, so as to ensure the stability of the static contact position.

[0004] However, it is found in practice that in the case of some relays with compact internal structures, there is no extra space in the shell to limit the end of the contact located in the shell. The contact only forms a limiting fit with the shell at the part where it passes through the side wall of the shell, which causes the contact to be structurally unstable and easy to shake when subjected to force, and cannot ensure good working performance of the relay. Summary of the invention

[0005] The object of the present invention is to overcome the above-mentioned defects or problems existing in the background technology and to provide a relay whose contact piece has a stable structure and is not easy to shake.

[0006] To achieve the above objectives, the present invention and its preferred embodiments adopt the following technical solutions, but the embodiments are not limited to the following solutions:

[0007] Technical solution one and its related embodiments provide a relay, including a shell, which is provided with a first side wall perpendicular to the X-axis direction; a contact piece, which includes a first static contact, a contact piece body and a connecting terminal fixed to each other; the first static contact is located in the shell, and is suitable for being abutted along a direction perpendicular to the Z-axis direction; the contact piece body passes through the first side wall along the X-axis direction and is limitedly matched with the shell along the Y-axis direction, and the connecting terminal is fixedly connected to the part of the contact piece body located outside the shell; and a limiting piece, which is fixedly connected to the contact piece body and is provided with a limiting portion that is matched with the first side wall to stop rotation so as to limit the swing of the contact piece body around the axis extending along the Z-axis direction.

[0008] Based on technical solution one, technical solution two is also provided. In technical solution two and its related embodiments, the limiting portion extends along the Y-axis direction.

[0009] Based on Technical Solution 2, Technical Solution 3 is also provided. In Technical Solution 3 and its related embodiments, the first side wall is provided with a thickened portion, the thickened portion is provided with a first limiting groove, and the first limiting groove is provided with two groove side walls opposite to each other; the limiting portion is suitable for being inserted into the first limiting groove and forming a anti-rotation fit and a limiting fit along the X-axis direction with the two groove side walls.

[0010] Based on technical solution three, technical solution four is also provided. In technical solution four and its related embodiments, the limiting portion is in the shape of a flat sheet perpendicular to the X-axis direction; and the two groove side walls are both perpendicular to the X-axis direction.

[0011] Based on technical solution three or four, technical solution five is also provided. In technical solution five and its related embodiments, the limiting portion and the first limiting groove are also fixed by gluing with an adhesive.

[0012] Based on technical solution four, technical solution six is ​​also provided. In technical solution six and its related embodiments, the shell includes a base, one end of the base along the Z-axis direction is open and provided with the first side wall; the width direction of the contact body is the Z-axis direction, and the first limiting groove extends along the Z-axis direction to the opening end of the base.

[0013] Based on technical solution six, technical solution seven is also provided. In technical solution seven and its related embodiments, the limiting member is also provided with a connecting piece which is integrated with the limiting portion. The connecting piece is a flat sheet perpendicular to the Y-axis direction, and is abutted and fixedly connected to one side of the contact member body along the Y-axis direction.

[0014] Based on Technical Solution Seven, Technical Solution Eight is also provided. In Technical Solution Eight and its related embodiments, along the X-axis direction, the connecting piece is connected to the side of the limiting portion away from the first static contact, and is suitable for extending out of the shell from the first side wall.

[0015] Based on Technical Solution Eight, Technical Solution Nine is also provided. In Technical Solution Nine and its related embodiments, the contact body extends along the X-axis direction, the first static contact is located on one side of the contact body along the Y-axis direction and is suitable for being resisted along the Y-axis direction, and the limiting portion is arranged corresponding to the first static contact, and is located on the side of the contact body away from the corresponding first static contact.

[0016] Based on technical solution nine, technical solution ten is also provided. In technical solution ten and its related embodiments, the first static contacts are arranged on both sides of the contact body along the Y-axis direction; the number of the limiting members is two, and the two limiting members are respectively fixed to the two sides of the contact body along the Y-axis direction; the thickened portion is provided with two first limiting grooves corresponding to the two limiting portions respectively.

[0017] Based on technical solution ten, technical solution eleven is also provided. In technical solution eleven and its related embodiments, the two connecting plates are provided with at least two first through holes opened along the Y-axis direction, and the contact body is provided with second through holes that are equal in number to and correspond to the first through holes one by one, and the connecting plate is riveted to the contact body by rivets that penetrate the first through holes and the second through holes.

[0018] Based on technical solution eleven, technical solution twelve is also provided. In technical solution twelve and its related embodiments, the riveting directions of at least two rivets are opposite.

[0019] Based on any one of technical solutions one to twelve, a technical solution thirteen is also provided. In the technical solution thirteen and its related embodiments, the limiting member is made of metal.

[0020] Based on technical solution six, technical solution fourteen is also provided. In technical solution fourteen and its related embodiments, the base is also provided with a bottom wall perpendicular to the Z-axis direction and suitable for supporting the contact piece, the bottom wall is provided with a fourth limiting groove, and the contact piece body is provided with an insertion portion that cooperates with the fourth limiting groove along the Y-axis direction; the thickened portion extends along the Z-axis direction to the bottom wall.

[0021] Based on any one of technical solutions 10 to 12, there is also a technical solution 15. Technical solution 15 and its related embodiments further include a first moving spring piece and two second moving spring units; the first moving spring piece extends along the X-axis direction, and its first end in the length direction is provided with two first moving contacts that are away from each other, and the second end is fixedly connected to the two first static contacts and forms a first moving spring unit with the contact piece; the two second moving spring units are respectively located on both sides of the first moving spring unit along the Y-axis direction, and each includes a second moving spring piece, a lead-out piece, a second static contact and a second moving contact; the second moving spring pieces extend along the X-axis direction; each second moving spring unit, on one side facing the first moving spring unit, is provided with a second static contact and a second moving contact fixedly connected, the second static contact and the second static contact corresponding to the first moving contact, the second moving contact and the second moving contact corresponding to the first static contact, the second moving spring unit is also provided with a lead-out end fixedly connected to the lead-out piece and the second static contact, and the lead-out end passes through the shell and extends out of the shell.

[0022] Based on technical solution fifteen, there is also provided a technical solution sixteen. In technical solution sixteen and its related embodiments, the shell is also provided with a second side wall perpendicular to the Y-axis direction and adjacent to the first side wall; the lead-out piece of the two lead-out pieces of the two second dynamic spring units that is closer to the second side wall is defined as the first lead-out piece, and the lead-out piece that is farther away from the second side wall is defined as the second lead-out piece; the first lead-out piece is in contact with the second side wall and is limitedly connected to the second side wall along the X-axis direction and the Y-axis direction, and the part of the second lead-out piece located in the shell is limitedly connected to the shell along the Y-axis direction; the thickened portion extends along the Y-axis direction to the second side wall.

[0023] Based on technical solution sixteen, technical solution seventeen is also provided. In technical solution seventeen and its related embodiments, the second side wall is provided with a thickened portion, the thickened portion is provided with a second through hole and a second limiting groove connected to the second through hole and the hole wall of the second through hole, the first lead-out piece end is provided with a first connecting portion, a first lead-out body and a plug-in portion, the first connecting portion is in contact with the inner surface of the second side wall and extends along the X-axis direction, and its end away from the second through hole is limitedly matched with the shell along the Y-axis direction, the first lead-out body is connected to the first connecting portion as a whole and passes through the second through hole along the Y-axis direction and is limited by the hole wall of the second through hole to move along the X-axis direction, and the plug-in portion is connected to the first lead-out body as a whole and is limitedly matched with the second limiting groove along the Y-axis direction.

[0024] Based on technical solution seventeen, technical solution eighteen is also provided. In technical solution eighteen and its related embodiments, the base is also provided with a third side wall adjacent to the second side wall and parallel to and opposite to the first side wall; a third limiting groove with an opening toward the third side wall and away from the second side wall is provided in the base, and the second lead-out piece end is provided with a second lead-out body that penetrates the third side wall along the X-axis direction and is limited by the third side wall along the Y-axis direction, and a positioning portion is provided at one end of the second lead-out body that is away from the third side wall and located in the shell, and the positioning portion cooperates with the third limiting groove to limit along the Y-axis direction. It can be seen from the above description of the present invention and its preferred embodiments that, compared with the prior art, the technical solution and its preferred embodiments of the present invention have the following beneficial effects due to the adoption of the following technical means:

[0025] The applicant has learned through continuous observation, experimentation and research that the reason why the technical problem of "when the contact piece is limitedly matched with the shell only at the part where it passes through the side wall of the shell, the contact piece is easily structurally unstable and easy to shake, and the good working performance of the relay cannot be guaranteed" in the prior art solution is that when the contact piece is limitedly matched with the shell only at the position where it passes through the side wall of the shell, the part of the contact piece inside the shell and the part of the contact piece outside the shell are both presented in the form of cantilevers, and their stability is poor. Therefore, when the static contact is resisted or separated from the moving contact and the contact is bonded, the contact piece may deflect due to the force, resulting in poor position stability of the static contact, which may affect the contact pressure, contact gap, relay holding force, operating voltage and reset voltage and other working parameters of the relay during subsequent operation, and cannot guarantee the good working performance of the relay; and when the connecting terminal of the contact piece is connected to the outside, the part of the contact piece located on the outside may also be subjected to force due to the connection stress, resulting in deflection of the contact piece, which is also likely to result in poor position stability of the static contact, and cannot guarantee the good working performance of the relay.

[0026] In technical solution one and its preferred embodiment, "the contact body and the shell are limited in the Y-axis direction, the limiter is fixed to the contact body and is provided with a limiter portion that cooperates with the first side wall to limit the swing of the contact body around the axis extending along the Z-axis direction". Therefore, when the first static contact is subjected to force and is resisted or the connecting terminal is connected to the load, the first side wall can prevent the contact body from swinging around the axis extending along the Z-axis direction by cooperating with the limiter portion to prevent the first static contact from being displaced in the contact direction between the moving contact and the first static contact, thereby ensuring the stability of the first static contact and ensuring good operation of the relay. working performance; wherein, the limiter and the contact member are two independent components, which is beneficial to production and processing on the one hand, and reduces the consumables of expensive materials. On the other hand, the independently set limiter can set the size of the limiter to be larger according to the actual strength requirements. If the limiter and the contact member body are connected as one, due to the limited thickness of the contact member itself, the size of the limiter formed by processing it such as stamping process to stop the rotation with the first side wall is also limited, and it is difficult to obtain an effective limiter matching effect, and the first side wall may be damaged due to the large contact pressure due to the small size of the limiter. In addition, in the technical solution, the limiter only stops the rotation with the first side wall, so it is only necessary to improve the structure of the first side wall, and then fix the limiter to the contact member of the existing relay. The entire relay is slightly modified, and the assembly process of the original relay does not need to be modified, thereby ensuring the stable operation of the relay through minimal modification and low cost.

[0027] In the second technical solution and its preferred embodiment, the limit part extends along the Y-axis direction, that is, the limit part is parallel to the first side wall. Compared with the limit part extending along the X-axis direction or other directions perpendicular to the Z-axis direction, the space occupied by the limit part in the X-axis direction can be reduced, and the limit part can be prevented from interfering with the installation and operation of the first static contact or other components, and the connection structure between the limit part and the contact body can be set more simply. Therefore, the technical solution does not need to increase the space of the housing along the X-axis direction, and the volume of the relay is small.

[0028] In the technical solution three and its preferred embodiment, the first side wall is provided with a thickened portion, the thickened portion is provided with a first limiting groove, and the first limiting groove is provided with two groove side walls opposite to each other; the limiting portion is suitable for being inserted into the first limiting groove and forming a rotation-stopping fit and a limiting fit along the X-axis direction with the two groove side walls, so that the restriction of the limiting portion by the two groove side walls can prevent the contact member from being resisted by the force when the first static contact is subjected to force or the connection terminal is connected to the load and is subjected to force to swing around the axis extending along the Z-axis direction, thereby facilitating the stability of the first static contact. The provision of the thickened portion also enhances the strength of the first side wall and the supporting force for the limiting portion, thereby further ensuring the stable fit between the limiting portion and the first side wall.

[0029] In technical solution four and its preferred embodiments, the limiting portion is in the shape of a flat sheet perpendicular to the X-axis direction; the two groove side walls are perpendicular to the X-axis direction, which is beneficial to reducing the space occupied by the limiting portion and the thickened portion in the X-axis direction, avoiding increasing the space occupied by the relay in the X-axis direction, and the structure of the limiting portion and the first limiting groove is simple, and easy to form and assemble.

[0030] In technical solution five and its preferred embodiment, the limiting part and the first limiting groove are also fixed by gluing with an adhesive. When the limiting part and the side wall of the first limiting groove are glued together, the bonding area is large, which is beneficial to further improve the connection stability between the limiting part and the first side wall and increase the deformation resistance of the first side wall to a certain extent. The bonding operation is convenient and easy to implement.

[0031] In technical solution six and its preferred embodiment, the width direction of the contact body is the Z-axis direction, and the groove side wall of the first limit groove extends along the Z-axis direction to the opening end of the base, making full use of the space of the base in the Z-axis direction to increase the contact area between the limit part and the two groove side walls of the first limit groove, thereby increasing the anti-rotation force of the limit part and the first side wall, and further ensuring the stability of the position of the first static contact; the groove side wall of the first limit groove extends to the opening end of the base, that is, the first limit groove is open to the opening end of the base. During assembly, the assembly direction of the limit part is consistent with that of the contact piece, which is conducive to automated assembly and improving production efficiency, and also makes the groove side walls on both sides of the first limit groove used to cooperate with the limit part. The area is larger to further improve the anti-rotation cooperation ability.

[0032] In technical solution seven and its preferred embodiment, the limiter is also provided with a connecting piece connected to the limiter part as a whole. The connecting piece is a flat piece perpendicular to the Y-axis direction, and is abutted and fixed to one side of the contact body along the Y-axis direction. Compared with the solution in which the connecting piece is fixed to other parts of the contact body, the contact area between the connecting piece and the contact body is large, which is more conducive to the transmission of the anti-rotation effect of the limiter part to the contact body, and the structure of the contact is more stable.

[0033] In technical solution eight and its preferred embodiment, along the X-axis direction, the connecting piece is connected to the side of the limiting portion away from the first static contact, and is suitable for extending out of the shell from the first side wall, thereby avoiding the connecting piece from occupying too much internal space of the shell, and ensuring that the area where the connecting piece is fixed to the contact body can be made larger to meet better fixing strength requirements, so that the anti-rotation effect on the connecting piece can be better converted into the anti-rotation effect on the contact body.

[0034] In technical solution nine and its preferred embodiments, the contact body extends along the X-axis direction, the first static contact is located on one side of the contact body along the Y-axis direction and is suitable for being resisted along the Y-axis direction, and the limiting portion is arranged corresponding to the first static contact, which is located on the side of the contact body away from the corresponding first static contact. Therefore, when the first static contact is resisted along the Y-axis direction, the limiting portion can provide a force opposite to the resisting force to the contact body, which is beneficial to improve the stability of the contact.

[0035] In technical solution ten and its preferred embodiments, a first static contact is provided on both sides of the contact body along the Y-axis direction, and there are two limit members, which are respectively fixed to the two sides of the contact body along the Y-axis direction; the thickened portion is provided with two first limit grooves corresponding to the two limit members, respectively, which further increases the anti-rotation force between the contact member and the first side wall, thereby improving the connection stability between the contact member and the shell.

[0036] In technical solution eleven and its preferred embodiments, the first through hole and the second through hole are coaxial, and the connecting piece is riveted to the contact body by a rivet that passes through the first through hole and the second through hole, so that the rivet can rivet the contact body and the two connecting pieces at the same time, and the riveting operation is convenient and time-saving.

[0037] In technical solution twelve and its preferred embodiments, the riveting directions of at least two rivets are opposite. Compared with the same riveting direction of the rivets, both sides of the connecting piece and the contact body are connected by rivets at the same time, which can obtain a more uniform mechanical distribution and a stronger connecting force, so that the connection structure between the connecting piece and the contact body is more stable, thereby better resisting stress from different directions.

[0038] In technical solution thirteen and its preferred embodiment, the limiting part is made of metal material, has high strength, is not easy to deform, has good limiting effect, and can help the contact part dissipate heat and reduce temperature rise.

[0039] In the fourteenth technical solution and its preferred embodiment, the bottom wall is provided with a fourth limiting groove, and the contact body is provided with an insertion portion that is limitedly matched with the fourth limiting groove along the Y-axis direction, which makes full use of the internal space of the shell and further improves the strength of the static contact installation side of the contact. The thickened portion extends to the bottom wall along the Z-axis direction, further increasing the strength of the thickened portion.

[0040] In technical solution 15 and its preferred embodiment, the first dynamic spring unit formed by the first dynamic spring piece and the contact piece can be selectively connected in parallel with one of the second dynamic spring units, thereby diversifying the functions of the relay.

[0041] In the technical solution 16 and its preferred embodiment, the first lead-out piece is in contact with the second side wall and is limitedly connected with the second side wall along the Y-axis direction, and the part of the first lead-out piece located in the housing is limitedly connected with the housing along the Y-axis direction, making full use of the internal space of the housing, so that the first lead-out piece has a high stability, thereby making the second static contact have a high stability, and ensuring that the contact pressure, contact gap, relay holding force, operating voltage and reset voltage of the relay are not affected. The thickened portion extends to the second side wall along the Y-axis direction, further increasing the strength of the first side wall.

[0042] In technical solution seventeen and its preferred embodiment, the thickened portion is provided to enhance the strength of the second side wall and the supporting force for the first lead body, the thickened portion is provided with a second through hole, and the second limiting groove is connected to the second through hole, so that the wall thickness of the position where the first lead body passes through the second side wall is thicker, the deformation resistance of the second side wall is improved, and it is more conducive to the structural stability of the second side wall; on the other hand, compared with the second limiting groove being formed at other positions outside the second side wall, it is also more conducive to reducing interference with other components; wherein the first lead body is connected to the first connecting portion as a whole, the plug-in portion is connected to the first lead body as a whole, the processing is convenient, the first connecting portion is in contact with the second side wall, and the end thereof away from the second through hole is limitedly matched with the shell along the Y-axis direction, and the plug-in portion is limitedly matched with the second limiting groove along the Y-axis direction, so that a large anti-rotation force is formed between the first lead piece and the second side wall, the structure is stable, and because the first connecting portion is in contact with the second side wall, even if the contact area between the plug-in portion and the second limiting groove is small, the overall anti-deflection property of the first lead piece is not greatly affected.

[0043] In technical solution eighteen and its preferred embodiment, the second lead-out body penetrates the third side wall along the X-axis direction, and the positioning portion cooperates with the third limiting groove in the Y-axis direction, so that the two ends of the second lead-out piece located in the shell are limited, and the structure is stable and not easy to shake; after such arrangement, the contact piece of the first dynamic spring unit and the lead-out pieces of the two second dynamic spring units are respectively led out from different side walls of the shell, which not only do not interfere with each other but also ensure the strength of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0045] Figure 1 It is a schematic diagram of the three-dimensional structure of the base of the housing according to an embodiment of the present invention;

[0046] Figure 2 for Figure 1 A top view of

[0047] Figure 3 It is a schematic diagram of the three-dimensional structure of the first dynamic spring unit and the limiting member according to an embodiment of the present invention;

[0048] Figure 4 for Figure 3 An enlarged schematic diagram of part A;

[0049] Figure 5 It is a schematic diagram of the three-dimensional structure of the contact body and the connecting terminal according to an embodiment of the present invention;

[0050] Figure 6 for Figure 3 A top view of

[0051] Figure 7 It is a schematic diagram of the first dynamic spring unit and the limiting member being assembled in the base according to an embodiment of the present invention;

[0052] Figure 8 It is a schematic diagram of a first dynamic spring unit, a limiting member and a second dynamic spring unit assembled in a base according to an embodiment of the present invention.

[0053] Description of main reference numerals:

[0054] Shell 100; base 10; first side wall 11; thickened portion 111; first through hole 112; first limiting groove 113; groove side wall 1131; second side wall 12; thickened portion 121; second through hole 122; second limiting groove 123; third side wall 13; third through hole 131; fifth limiting groove 132; bottom wall 14; fourth limiting groove 141; partition wall 15; through hole 151; third limiting groove 152; first area 16; second area 17; first dynamic spring unit 200; first dynamic spring leaf 20; first dynamic spring Contact 21; contact piece 30; first static contact 31; contact piece body 32; second through hole 321; insertion portion 322; connecting terminal 33; stopper 40; stopper portion 41; connecting piece 42; first through hole 421; second movable spring piece 51; second movable contact 52; second static contact 53; lead-out piece 60; first lead-out piece 61; first connecting portion 611; first lead-out body 612; plug-in portion 613; second lead-out piece 62; second lead-out body 621; positioning portion 622; drive piece 70; drive portion 71. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] In the claims, description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. are for distinguishing different objects rather than for describing a specific order.

[0057] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the present invention.

[0058] In the claims, specification and the above drawings of the present invention, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0059] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0060] In the claims and the specification except for the embodiments, the terms "X-axis direction", "Y-axis direction" and "Z-axis direction" only mean that the feature with one of the above directions is perpendicular to the feature with another direction, and do not require that they must be implemented according to the "X-axis direction", "Y-axis direction" and "Z-axis direction" described in the embodiments. In the embodiments, the X-axis direction is perpendicular to the Y-axis direction and the Z-axis direction. Among them, the X-axis direction can be divided into left and right, the Y-axis direction can be divided into front and back, and the Z-axis direction can be divided into top and bottom.

[0061] See also Figure 1-8 The relay includes a housing 100 , a first dynamic spring unit 200 , a limiting member 40 , two second dynamic spring units, two lead-out members 60 and a driving member 70 .

[0062] See also Figure 1-2 The housing 100 includes a base 10 and a cover plate (not shown in the figure). The base 10 is a box-shaped structure with one end open. The base 10 is open at one end along the Z-axis direction. It is provided with a first side wall 11 and a third side wall 13 that are parallel and opposite to each other, and a second side wall 12 connecting the first side wall 11 and the third side wall 13. The first side wall 11 and the third side wall 13 are both perpendicular to the X-axis direction, and the second side wall 12 is perpendicular to the Y-axis direction. That is, the housing 100 is provided with a first side wall 11 perpendicular to the X-axis direction, and the base 10 is also provided with a bottom wall 14 perpendicular to the Z-axis direction. The bottom wall 14 is suitable for supporting the first dynamic spring unit 200 and the second dynamic spring unit described below. The bottom wall 14 is opposite to the opening of the base 10, and the bottom wall 14 is provided with a fourth limiting groove 141. The top end of the fourth limiting groove 141 and the side facing the first side wall 11 are both open. In this embodiment, the length direction of the housing 100 is the Y-axis direction, the width direction is the X-axis direction, and the height direction is the Z-axis direction.

[0063] The base 10 is further provided with a partition wall 15 that divides the inner cavity of the base 10 into a first area 16 and a second area 17 along the Y-axis direction. In this embodiment, the partition wall 15 is perpendicular to the Y-axis direction and extends along the X-axis direction, and through holes 151 are respectively provided at both ends along the X-axis direction. The second area 17 is closer to the third side wall 13 than the first area 16. The partition wall 15 is further provided with a third limiting groove 152 in the second area 17, and the opening of the third limiting groove 152 faces the third side wall 13, that is, the base 10 is provided with a third limiting groove 152 with an opening facing the third side wall 13, and the third limiting groove 152 extends along the Z-axis direction and is consistent with the height of the partition wall 15 along the Z-axis direction.

[0064] The first side wall 11 is provided with a thickened portion 111 corresponding to the second area 17, and the two ends of the thickened portion 111 along the Z-axis direction extend to the opening ends of the bottom wall 14 and the base 10 respectively, and the length of the thickened portion 111 along the Y-axis direction is consistent with the length of the second area 17 along the Y-axis direction, that is, one end of the thickened portion 111 extends to the second side wall 12 along the Y-axis direction, and the thickened portion 111 is provided with a first through hole 112 and two first limiting grooves 113 with opposite openings, the first limiting groove 113 is connected to the first through hole 112, and the two ends of the first limiting groove 113 along the Z-axis direction also extend to the opening ends of the bottom wall 14 and the base 10 respectively, and the first limiting groove 113 is provided with two groove side walls 1131 opposite to each other, and the two groove side walls 1131 are both perpendicular to the X-axis direction. The second side wall 12 is provided with a thickened portion 121 near the third side wall 13, and the two ends of the thickened portion 121 along the Z-axis direction extend to the bottom wall 14 and the opening end of the base 10 respectively. The thickened portion 121 is provided with a second through hole 122 and a second limiting groove 123 connected to the second through hole 122. The second limiting groove 123 extends along the Z-axis direction and the two ends along the Z-axis direction also extend to the opening ends of the bottom wall 14 and the base 10 respectively. The third side wall 13 is provided with a third through hole 131 near the first area 16, and is provided with a fifth limiting groove 132 near the second side wall 12 with an opening toward the first side wall.

[0065] See also Figure 3-6 The first movable spring unit 200 includes a first movable spring piece 20 and a contact member 30. The first movable spring piece 20 extends along the X-axis direction, and a first end of the first movable spring piece 20 in the length direction is provided with two first movable contacts 21 which are separated from each other, and a second end is fixedly connected to the contact member 30. Figure 3 In the embodiment, two first moving contacts 21 are provided on each side of the first moving spring piece 20 along the Y-axis direction; the contact member 30 includes a first static contact 31 fixed to the first moving spring piece 20, a contact member body 32 fixed to the first static contact 31 and extending along the X-axis direction, and a connecting terminal 33 fixed to the contact member body 32. The first static contact 31 is suitable for being abutted along a direction perpendicular to the Z-axis direction. In this embodiment, the first static contact 31 is located on one side of the contact member body 32 along the Y-axis direction, see Figure 7The first movable spring 20 and the first static contact 31 are both located in the second area 17 of the housing 100, see Figure 6 , the first static contact 31 is disposed on both sides of the contact body 32 along the Y-axis direction. In this embodiment, the first static contact 31 is suitable for being resisted along the Y-axis direction; see Figure 7 The contact body 32 passes through the first through hole 112 of the first side wall 11 along the X-axis direction and is limitedly matched with the housing 100 along the Y-axis direction; see Figure 5 The width direction of the contact body 32 is the Z-axis direction, and a second through hole 321 is further provided in the middle of the contact body 32. The bottom end of the contact body 32 is provided with an insertion portion 322 that cooperates with the fourth limiting groove 141 along the Y-axis direction so that the contact 30 can be supported and limited by the bottom wall 14; the connecting terminal 33 is fixedly connected to the part of the contact body 32 located outside the shell 100. In this embodiment, the connecting terminal 33 is perpendicular to the Z-axis direction and is fixedly connected to the bottom end of the contact body 32. The connecting terminal 33 and the contact body 32 can be fixedly connected as a whole in the form of but not limited to one-piece molding.

[0066] The number of the limiting members 40 is two, see Figure 3 , Figure 6-7The two limiting members 40 are respectively fixedly connected to the two sides of the contact body 32 along the Y-axis direction. Specifically, the limiting members 40 are made of metal material, and the two limiting members 40 are both provided with a limiting portion 41 and a connecting piece 42 connected to the limiting portion 41 as a whole. The limiting portion 41 extends along the Y-axis direction and is in the shape of a flat sheet perpendicular to the X-axis direction. The limiting portion 41 is suitable for being inserted into the first limiting groove 113 of the first side wall 11 and forming a non-rotation fit and a limiting fit along the X-axis direction with the two groove side walls 1131, wherein the two first limiting grooves 113 of the thickened portion 111 correspond to the two limiting portions 41 respectively, that is, the thickened portion 111 is provided with two first limiting grooves 113 corresponding to the two limiting portions 41 respectively. It is worth noting that the non-rotation fit relationship between the limiting portion 41 and the first side wall 11 can be realized by fixing the limiting portion 41 to the first side wall 11 in the form of bonding, welding or riveting, or by other methods of abutting with non-rotational surfaces (such as polygonal fit). In this embodiment, the limiting portion 41 and the first limiting groove 113 are also fixed by adhesive. In this embodiment, the limiting portion 41 is provided corresponding to the first static contact 31, and is located on the side of the contact body 32 away from the corresponding first static contact 31. The connecting piece 42 is in the shape of a flat sheet perpendicular to the Y-axis direction, and is abutted against and fixedly connected to one side of the contact body 32 along the Y-axis direction; it should be understood that the connecting piece 42 and the contact body 32 may be fixedly connected by welding, riveting or bonding, etc., and the connecting piece 42 may be located on one side inside the shell 100, or on one side of the shell 100. In a preferred example, along the X-axis direction, the connecting piece 42 is connected to the side of the limiting portion 41 away from the first static contact 31, and is suitable for extending out of the shell 100 from the first through hole 112 of the first side wall 11. Both connecting pieces 42 are provided with at least two first through holes 421 opened along the Y-axis direction, Figure 4 In the embodiment, the two connecting pieces 42 are each provided with three first through holes 421 opened along the Y-axis direction, the number of the first through holes 421 corresponds to the number of the second through holes 321, and the connecting piece 42 is riveted to the contact body 32 by rivets penetrating the first through holes 421 and the second through holes 321, and the riveting directions of at least two rivets are opposite. Based on the above structure, it can be known that in this embodiment, the stopper 40 is fixedly connected to the contact body 32 and is provided with a stopper 41 that cooperates with the first side wall 11 to prevent rotation so as to limit the swing of the contact body 32 around the axis extending along the Z-axis direction.

[0067] See also Figure 8The two second movable spring units are respectively located on both sides of the first movable spring unit 200 along the Y-axis direction, and each includes a second movable spring piece 51, a lead-out piece 60, a second static contact 53 and a second movable contact 52; the second movable spring piece 51 extends along the X-axis direction, and a second static contact 53 and a second movable contact 52 are fixedly connected to one side thereof facing the first movable spring unit 200, the second static contact 53 corresponds to the first movable contact 21, and the second movable contact 52 corresponds to the first static contact 31; the lead-out piece 60 is fixedly connected to the second static contact 53, and passes through the shell 100 and extends out of the shell 100.

[0068] The lead-out piece 60 closer to the second side wall 12 of the two lead-out pieces 60 is defined as a first lead-out piece 61 , and the lead-out piece 60 farther from the second side wall 12 is defined as a second lead-out piece 62 .

[0069] Specifically, the first lead-out member 61 is provided with a first connecting portion 611, a first lead-out body 612 and an inserting portion 613. The first connecting portion 611 is in contact with the inner surface of the second side wall 12 and extends along the X-axis direction. The end thereof away from the second through hole 122 is plugged into and matched with the fifth limiting groove 132 of the shell 100 to form a limiting match along the Y-axis direction. The first lead-out body 612 is connected as a whole with the first connecting portion 611 and passes through the second through hole 122 along the Y-axis direction and is limited by the hole wall of the second through hole 122 to move along the X-axis direction. The inserting portion 613 is connected as a whole with the first lead-out body 612 and is limitedly matched with the second limiting groove 123 along the Y-axis direction. Therefore, the first lead-out member 61 is in contact with the second side wall 12 and is limitedly connected with the second side wall 12 along the X-axis direction and the Y-axis direction. The part of the first lead-out member 61 located in the shell 100 is limitedly connected with the shell 100 along the Y-axis direction.

[0070] The second lead-out member 62 is provided with a third through hole 131 penetrating the third side wall 13 along the X-axis direction and a second lead-out body 621 limited along the Y-axis direction by the third side wall 13. A positioning portion 622 is provided at one end of the second lead-out body 621 located in the shell 100. The positioning portion 622 is plugged into and matched with the third limiting groove 152 and limited along the Y-axis direction.

[0071] In this embodiment, the driving member 70 is an armature assembly, the main body of which is placed in the first area 16, and is movably connected or fixedly connected to the driving parts 71 of the two through holes 151 that penetrate the partition wall 15, respectively. One of the driving parts 71 is linked to the first end of the first movable spring piece 20, and the other driving part 71 is connected to one end of the two second movable spring units provided with the second movable contact 52, so that the first movable spring unit 200 can be connected in parallel with one of the second movable spring units.

[0072] When assembling the first movable spring unit 200 in this embodiment, the second end of the first movable spring piece 20 is first fixedly connected to the contact member 30, and then the connecting pieces 42 of the two stoppers 40 are riveted to the two sides of the contact member body 30 along the Y-axis direction, so as to form a Figure 3 The structure shown will Figure 3 The structure shown in the figure is placed into the base along the Z-axis direction, the insertion portion 322 of the contact body 32 is inserted into the fourth limiting groove 141, and the contact body 32 and the connecting piece 42 pass through the first through hole 112, thereby, the contact body 32 is respectively abutted against the two sides of the first through hole 112 through the two connecting pieces 42 to achieve limiting cooperation with the housing 100 along the Y-axis direction, and the limiting portion 41 is inserted into the corresponding first limiting groove 113 along the Z-axis direction; when the second dynamic spring unit is installed, the first lead-out member 61 corresponds to the second dynamic spring unit. The spring unit is placed in the base 10 close to the second side wall 11, one end of the first connecting portion 611 is inserted into the fifth limiting groove 132 along the Z-axis direction and abuts against the inner surface of the second side wall 12, the plug-in portion 613 is inserted into the second limiting groove 123 along the Z-axis direction, and the first lead-out body 612 passes through the second through hole 122; the second dynamic spring unit corresponding to the second lead-out member 62 is placed in the base 10, the second lead-out body 621 passes through the third through hole 131, and the positioning portion 622 is inserted into the third limiting groove 152.

[0073] When the relay of this embodiment works, see Figure 8 When the driving member 70 rotates clockwise, the driving portion 71 on the left side drives the first moving contact 21 of the first moving spring unit 200 to contact the second static contact 53 away from the second side wall 12, and the driving portion 71 on the right side drives the second moving contact 52 away from the second side wall 12 to contact the corresponding first static contact 31, and drives the second moving contact 52 close to the second side wall 12 away from the corresponding first static contact 31, so that the first moving spring unit 200 and the second moving spring unit away from the second side wall 12 are connected in parallel. When the driving member 70 rotates counterclockwise, the driving part 71 on the left side drives the first moving contact 21 of the first moving spring unit 200 to contact the second static contact 53 close to the second side wall 12, and the driving part 71 on the right side drives the second moving contact 52 close to the second side wall 12 to contact the corresponding first static contact 31, and drives the second moving contact 52 away from the second side wall 12 away from the corresponding first static contact 31, so that the first moving spring unit 200 is connected in parallel with the second moving spring unit close to the second side wall 12.

[0074] In this embodiment, "the contact body 32 is limitedly matched with the shell 100 along the Y-axis direction, the limiter 40 is fixedly connected to the contact body 32 and is provided with a limiter 41 which is matched with the first side wall 11 to limit the swing of the contact body 32 around the axis extending along the Z-axis direction", so when the first static contact 31 is subjected to force and is resisted or the connecting terminal 33 is connected to the load, the first side wall 11 can prevent the contact body 32 from swinging around the axis extending along the Z-axis direction by preventing the rotation of the limiter 41, thereby preventing the first static contact 31 from being displaced in the contact direction between the moving contact and the first static contact 31, thereby ensuring the stability of the first static contact 31 and ensuring the good operation of the relay. Good working performance; wherein, the stopper 40 and the contact 30 are two independent components, which is beneficial to production and processing on the one hand, and reduces the consumables of expensive materials. On the other hand, the independently set stopper 40 can set the size of the stopper 41 to be larger according to the actual strength requirements. If the stopper 40 and the contact body 32 are connected as one, due to the limited thickness of the contact 30 itself, the size of the stopper 41 formed by processing it such as stamping process to stop the rotation with the first side wall 11 is also limited, and it is difficult to obtain an effective stopper matching effect, and the first side wall 11 may be damaged due to the large contact pressure due to the small size of the stopper 41. In addition, in the technical solution, the stopper 41 only stops the rotation with the first side wall 11, so it is only necessary to improve the structure of the first side wall 11, and then fix the stopper 40 with the contact 30 of the existing relay. The entire relay is slightly modified, and the assembly process of the original relay does not need to be modified, thereby ensuring the stable operation of the relay through minimal modification, and the cost is low.

[0075] In this embodiment, the limiting portion 41 extends along the Y-axis direction, that is, the limiting portion 41 is parallel to the first side wall 11. Compared with the limiting portion 41 extending along the X-axis direction or other directions perpendicular to the Z-axis direction, the space occupied by the limiting portion 41 in the X-axis direction can be reduced, and the limiting portion 41 can be prevented from interfering with the installation and operation of the first static contact 31 or other components, and the connection structure between the limiting member 40 and the contact member body 32 can be set more simply. Therefore, in this embodiment, there is no need to increase the space of the housing 100 along the X-axis direction, and the volume of the relay is small.

[0076] In this embodiment, the first side wall 11 is provided with a thickened portion 111, the thickened portion 111 is provided with a first limiting groove 113, and the first limiting groove 113 is provided with two groove side walls 1131 opposite to each other; the limiting portion 41 is suitable for being inserted into the first limiting groove 113 and forming a rotation-stopping fit and a limiting fit along the X-axis direction with the two groove side walls 1131, so that the restriction of the limiting portion 41 by the two groove side walls 1131 can prevent the contact member 30 from being resisted by the first static contact 31 or from swinging around the axis extending along the Z-axis direction when the connecting terminal 33 is connected to the load, thereby facilitating the stability of the first static contact 31. The provision of the thickened portion 111 also enhances the strength of the first side wall 11 and the supporting force for the limiting portion 41, thereby further ensuring the stable fit between the limiting portion 41 and the first side wall 11.

[0077] In this embodiment, the limiting portion 41 is in the shape of a flat sheet perpendicular to the X-axis direction; the two groove side walls 1131 are perpendicular to the X-axis direction, which is beneficial to reducing the space occupied by the limiting portion 41 and the thickened portion 111 in the X-axis direction, avoiding increasing the space occupied by the relay in the X-axis direction, and the limiting portion 41 and the first limiting groove 113 have a simple structure and are easy to form and assemble.

[0078] In this embodiment, the limiting portion 41 and the first limiting groove 113 are also fixed by gluing with an adhesive. When the limiting portion 41 and the groove side wall 1131 of the first limiting groove 113 are glued, the bonding area is large, which is beneficial to further improve the connection stability between the limiting portion 41 and the first side wall 11 and increase the deformation resistance of the first side wall 11 to a certain extent. The bonding operation is convenient and easy to implement.

[0079] In this embodiment, the width direction of the contact body 32 is the Z-axis direction, and the groove side wall 1131 of the first limiting groove 113 extends along the Z-axis direction to the open end of the base 10, making full use of the space of the base 10 in the Z-axis direction to increase the contact area between the limiting portion 41 and the two groove side walls 1131 of the first limiting groove 113, thereby increasing the anti-rotation force of the limiting portion 41 and the first side wall 11, and further ensuring the stability of the position of the first static contact 31; the groove side wall 1131 of the first limiting groove 113 extends to the open end of the base 10, that is, the first limiting groove 113 opens at the open end of the base 10. During assembly, the limiting portion 41 is consistent with the assembly direction of the contact 30, which is conducive to automated assembly and improving production efficiency, and also makes the groove side walls 1131 on both sides of the first limiting groove 113 used to cooperate with the limiting portion 41. The area is larger to further improve the anti-rotation cooperation ability.

[0080] In this embodiment, the limiting member 40 is further provided with a connecting piece 42 which is connected to the limiting portion 41 as a whole. The connecting piece 42 is a flat piece perpendicular to the Y-axis direction, and is abutted against and fixedly connected to one side of the contact body 32 along the Y-axis direction. Compared with the solution in which the connecting piece 42 is fixedly connected to other parts of the contact body 32, the contact area between the connecting piece 42 and the contact body 32 is large, which is more conducive to the transmission of the anti-rotation effect of the limiting portion 41 to the contact body 32, and the structure of the contact 30 is more stable.

[0081] In this embodiment, along the X-axis direction, the connecting piece 42 is connected to the side of the limiting portion 41 away from the first static contact 31, and is suitable for extending out of the shell 100 from the first side wall 11, thereby avoiding the connecting piece 42 from occupying too much internal space of the shell 100, and ensuring that the area where the connecting piece 42 and the contact body 32 are fixedly connected can be made larger to meet better fixing strength requirements, so that the anti-rotation effect on the connecting piece 42 can be better converted into the anti-rotation effect on the contact body 32.

[0082] In this embodiment, the contact body 32 extends along the X-axis direction, the first static contact 31 is located on one side of the contact body 32 along the Y-axis direction and is suitable for being resisted along the Y-axis direction, and the limiting portion 41 is arranged corresponding to the first static contact 31, which is located on the side of the contact body 32 away from the corresponding first static contact 31. Therefore, when the first static contact 31 is resisted along the Y-axis direction, the limiting portion 41 can provide a force opposite to the resisting force to the contact body 32, which is beneficial to improve the stability of the contact 30.

[0083] In this embodiment, a first static contact 31 is provided on both sides of the contact body 32 along the Y-axis direction, and there are two limit members 40, which are respectively fixed to the two sides of the contact body 32 along the Y-axis direction; the thickened portion 111 is provided with two first limit grooves 113 corresponding to the two limit members 41, respectively, which further increases the anti-rotation force between the contact member 30 and the first side wall 11, thereby improving the connection stability between the contact member 30 and the shell 100.

[0084] In this embodiment, the first through hole 421 and the second through hole 321 are coaxial, and the connecting piece 42 is riveted to the contact body 32 by a rivet that passes through the first through hole 421 and the second through hole 321, so that the rivet can rivet the contact body 32 and the two connecting pieces 42 at the same time, and the riveting operation is convenient and time-saving.

[0085] In this embodiment, the riveting directions of at least two rivets are opposite. Compared with the case where the riveting directions of the rivets are the same, both sides of the connecting piece 42 and the contact body 32 are connected by rivets at the same time, which can obtain a more uniform mechanical distribution and a stronger connecting force, so that the connection structure between the connecting piece 42 and the contact body 32 is more stable, thereby being able to better resist stress from different directions.

[0086] In this embodiment, the limiting member 40 is made of metal material, which has high strength, is not easy to deform, has a good limiting effect, and can help the contact member 30 dissipate heat and reduce temperature rise.

[0087] In this embodiment, the bottom wall 14 is provided with a fourth limiting groove 141, and the contact body 32 is provided with an insertion portion 322 that is limitedly matched with the fourth limiting groove 141 along the Y-axis direction, which fully utilizes the internal space of the housing 100 and further improves the strength of the static contact installation side of the contact 30. The thickened portion 111 extends to the bottom wall 14 along the Z-axis direction, further increasing the strength of the thickened portion 111.

[0088] In this embodiment, the first dynamic spring unit 200 formed by the first dynamic spring piece 20 and the contact member 30 can be selectively connected in parallel with one of the second dynamic spring units, so as to diversify the functions of the relay.

[0089] In this embodiment, the first lead-out member 61 is in contact with the second side wall 12 and is limitedly connected with the second side wall 12 along the Y-axis direction. The part of the first lead-out member 61 located in the housing 100 is limitedly connected with the housing 100 along the Y-axis direction, making full use of the internal space of the housing 100, so that the first lead-out member 61 has a high stability, thereby making the second static contact 53 have a high stability, and ensuring that the contact pressure, contact gap, relay holding force, operating voltage and reset voltage of the relay are not affected. The thickened portion 111 extends to the second side wall 12 along the Y-axis direction, further increasing the strength of the first side wall 11.

[0090] In this embodiment, the thickened portion 121 is provided to enhance the strength of the second side wall 12 and the support force for the first lead body 612. The thickened portion 121 is provided with a second through hole 122, and the second limiting groove 123 is connected to the second through hole 122, so that the wall thickness of the position where the first lead body 612 passes through the second side wall 12 is thicker, thereby improving the anti-deformation strength of the second side wall 12 and being more conducive to the structural stability of the second side wall 12. On the other hand, compared with the second limiting groove 123 being formed at other positions outside the second side wall 12, it is also more conducive to reducing interference with other components. The first lead body 612 and the first connecting portion 123 are connected to each other. 611 is connected as a whole, the plug-in part 613 is connected as a whole with the first lead-out body 612, and the processing is convenient. The first connecting part 611 is in contact with the second side wall 12, and its end away from the second through hole 122 is limited and matched with the shell 100 along the Y-axis direction, and the plug-in part 613 is limited and matched with the second limiting groove 123 along the Y-axis direction, so that a large anti-rotation force is formed between the first lead-out piece 61 and the second side wall 12, and the structure is stable. Moreover, since the first connecting part 611 is in contact with the second side wall 12, even if the contact area between the plug-in part 613 and the second limiting groove 123 is small, it has little effect on the overall anti-deflection property of the first lead-out piece 61.

[0091] In this embodiment, the second lead-out body 621 penetrates the third side wall 13 along the X-axis direction, and the positioning portion 622 cooperates with the third limiting groove 152 along the Y-axis direction, so that the two ends of the second lead-out member 62 located in the shell 100 are limited, and the structure is stable and not easy to shake; after such arrangement, the contact member 30 of the first dynamic spring unit 200 and the lead-out members 60 of the two second dynamic spring units are respectively led out from different side walls of the shell 100, which not only do not interfere with each other, but also ensure the strength of the shell 100.

[0092] The description of the above specification and embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation on the protection scope of the present invention. Through the enlightenment of the present invention or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent substitutions or other improvements to the embodiments of the present invention or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the present invention.

Claims

1. A relay, characterized in that: include A housing (100) having a first side wall (11) perpendicular to the X-axis direction; A contact (30), comprising a first stationary contact (31), a contact body (32) and a connecting terminal (33) fixedly connected to each other; the first stationary contact (31) is located in a housing (100) and is suitable for being abutted in a direction perpendicular to the Z-axis direction; the contact body (32) penetrates the first side wall (11) in the X-axis direction and is limitedly matched with the housing (100) in the Y-axis direction; the connecting terminal (33) is fixedly connected to a portion of the contact body (32) located outside the housing (100); and A limiting member (40) is fixedly connected to the contact member body (32) and is provided with a limiting portion (41) that cooperates with the first side wall (11) to prevent rotation so as to limit the swing of the contact member body (32) around an axis extending along the Z-axis direction.

2. A relay as claimed in claim 1, characterized in that: The limiting portion (41) extends along the Y-axis direction.

3. A relay as claimed in claim 2, characterized in that: The first side wall (11) is provided with a thickened portion (111), the thickened portion (111) is provided with a first limiting groove (113), the first limiting groove (113) is provided with two groove side walls (1131) opposite to each other; the limiting portion (41) is suitable for being inserted into the first limiting groove (113) and forming a rotation-stopping fit and a limiting fit along the X-axis direction with the two groove side walls (1131).

4. A relay as claimed in claim 3, characterized in that: The limiting portion (41) is in the shape of a flat sheet perpendicular to the X-axis direction; and the two groove side walls (1131) are both perpendicular to the X-axis direction.

5. A relay as claimed in claim 3, characterized in that: The limiting portion (41) and the first limiting groove (113) are also fixed by gluing with an adhesive.

6. A relay as claimed in claim 4, characterized in that: The shell (100) comprises a base (10), one end of the base (10) along the Z-axis direction is open and is provided with the first side wall (11); the width direction of the contact body (32) is the Z-axis direction, and the first limiting groove (113) extends along the Z-axis direction to the open end of the base (10).

7. A relay as claimed in claim 6, characterized in that: The limiting member (40) is also provided with a connecting piece (42) connected to the limiting portion (41) as a whole. The connecting piece (42) is in the shape of a flat sheet perpendicular to the Y-axis direction and is abutted against and fixedly connected to one side of the contact member body (32) along the Y-axis direction.

8. A relay as claimed in claim 7, characterized in that: Along the X-axis direction, the connecting piece (42) is connected to a side of the limiting portion (41) away from the first static contact (31), and is suitable for extending from the first side wall (11) outside the housing (100).

9. A relay as claimed in claim 8, characterized in that: The contact body (32) extends along the X-axis direction, the first static contact (31) is located on one side of the contact body (32) along the Y-axis direction and is suitable for being abutted along the Y-axis direction, and the limiting portion (41) is arranged corresponding to the first static contact (31), and is located on a side of the contact body (32) away from the corresponding first static contact (31).

10. A relay as claimed in claim 9, characterized in that: The first static contacts (31) are arranged on both sides of the contact body (32) along the Y-axis direction; the number of the limiting members (40) is two, and the two limiting members (40) are respectively fixedly connected to the two sides of the contact body (32) along the Y-axis direction; the thickened portion (111) is provided with two first limiting grooves (113) respectively corresponding to the two limiting portions (41).

11. A relay as claimed in claim 10, characterized in that: The two connecting pieces (42) are each provided with at least two first through holes (421) opened along the Y-axis direction, the contact piece body (32) is provided with second through holes (321) equal in number to and corresponding to the first through holes (421), and the connecting piece (42) is riveted to the contact piece body (32) via rivets penetrating the first through holes (421) and the second through holes (321).

12. A relay as claimed in claim 11, characterized in that: The riveting directions of at least two rivets are opposite.

13. A relay according to any one of claims 1 to 12, characterized in that: The limiting member (40) is made of metal.

14. A relay as claimed in claim 6, characterized in that: The base (10) is also provided with a bottom wall (14) perpendicular to the Z-axis direction and suitable for supporting the contact member (30), the bottom wall (14) is provided with a fourth limiting groove (141), and the contact member body (32) is provided with an insertion portion (322) that cooperates with the fourth limiting groove (141) in a limiting manner along the Y-axis direction; the thickened portion (111) extends to the bottom wall (14) along the Z-axis direction.

15. A relay according to any one of claims 10 to 12, characterized in that: The invention also comprises a first movable spring piece (20) and two second movable spring units; the first movable spring piece (20) extends along the X-axis direction, and a first end of the first movable spring piece (20) in the length direction is provided with two first movable contacts (21) which are separated from each other, and a second end is fixedly connected to two first static contacts (31) and forms a first movable spring unit (200) with the contact member (30); the two second movable spring units are respectively located on both sides of the first movable spring unit (200) along the Y-axis direction, and each of the two second movable spring units comprises a second movable spring piece (51), a lead-out member (60), a second static contact The second movable spring piece (51) extends along the X-axis direction, and a second static contact (53) and a second movable contact (52) are fixedly connected on one side thereof facing the first movable spring unit (200); the second static contact (53) corresponds to the first movable contact (21), and the second movable contact (52) corresponds to the first static contact (31); the lead-out piece (60) is fixedly connected to the second static contact (53), and passes through the housing (100) and extends out of the housing (100).

16. A relay as claimed in claim 15, characterized in that: The shell (100) is also provided with a second side wall (12) perpendicular to the Y-axis direction and adjacent to the first side wall (11); the lead-out piece (60) closer to the second side wall (12) of the two lead-out pieces (60) is defined as the first lead-out piece (61), and the lead-out piece (60) farther away from the second side wall (12) is defined as the second lead-out piece (62); the first lead-out piece (61) is in contact with the second side wall (12) and is positionally connected to the second side wall (12) along the X-axis direction and the Y-axis direction, and the portion of the first lead-out piece (61) located inside the shell (100) is positionally connected to the shell (100) along the Y-axis direction; the thickened portion (111) extends along the Y-axis direction to the second side wall (12).

17. A relay as claimed in claim 16, characterized in that: The second side wall (12) is provided with a thickened portion (121), the thickened portion (121) is provided with a second through hole (122) and a second limiting groove (123) connected to the second through hole (122), the first lead-out member (61) is provided with a first connecting portion (611), a first lead-out body (612) and an inserting portion (613), the first connecting portion (611) is in contact with the inner surface of the second side wall (12) and extends along the X-axis direction, and one end thereof away from the second through hole (122) is limitedly matched with the shell (100) along the Y-axis direction, the first lead-out body (612) is connected to the first connecting portion (611) as a whole and passes through the second through hole (122) along the Y-axis direction and is limited by the hole wall of the second through hole (122) to move along the X-axis direction, and the inserting portion (613) is connected to the first lead-out body (612) as a whole and is limitedly matched with the second limiting groove (123) along the Y-axis direction.

18. A relay as claimed in claim 17, characterized in that: The base (10) is also provided with a third side wall (13) which is parallel to and opposite to the first side wall (11) and adjacent to the second side wall (12); a third limiting groove (152) with an opening toward the third side wall (13) is provided in the base (10); the second lead-out member (62) is provided with a second lead-out body (621) which passes through the third side wall (13) along the X-axis direction and is limited by the third side wall (13) along the Y-axis direction; a positioning portion (622) is provided at one end of the second lead-out body (621) located in the shell (100); the positioning portion (622) cooperates with the third limiting groove (152) to limit along the Y-axis direction.

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