Relay

Abstract

To provide a relay in which a movable contactor assembly can avoid rotating with respect to a push rod.SOLUTION: A push rod assembly pushes and moves a movable contactor assembly 3100 so that it contacts or separates a fixed contact pull-out end, an elastic assembly is connected to a push rod assembly via a first anti-rotation structure and to the movable contactor assembly via a second anti-rotation structure 400 used to provide contact pressure, and is used to restrict the movable contactor assembly from rotating about the axis of the push rod assembly relative to the push rod assembly.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to the technical field of electronic control devices, in particular relays. [Background technology]

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

[0003] A DC relay is a type of relay, and a DC relay in the prior art includes a pair of fixed contact lead ends and a movable assembly, the movable assembly includes a movable contact and a push rod assembly, and the movable contact is attached to the push rod assembly through an elastic member. During the over-travel stage, the movable contact is brought into contact with the pair of fixed contact lead ends, the push rod assembly continues to move upward, and the elastic member is compressed to form a contact pressure.

[0004] However, the movable contact of the DC relay in the prior art is prone to rotate relative to the push rod assembly, which results in the movable contact being excessively deflected and causing the contact position between the movable contact and the fixed contact to be inconsistent, resulting in unstable contact resistance and affecting the reliability of the relay. Summary of the Invention

[0005] SUMMARY OF THE PRESENTLY PREFERRED EMBODIMENTS An embodiment of the present invention provides a relay that can prevent the movable contact assembly from rotating relative to the push rod.

[0006] A relay according to an embodiment of the present invention includes a movable contact assembly, a push rod assembly, and a resilient assembly, The movable contact assembly includes a movable contact, the push rod assembly is used to push and move the movable contact assembly so as to bring the movable contact into contact with or separate from the fixed contact lead-out end; The elastic assembly is connected to the push rod assembly via a first anti-rotation structure and to the movable contact assembly via a second anti-rotation structure, and the elastic assembly is used to provide contact pressure and to limit rotation of the movable contact assembly relative to the push rod assembly about the axis of the push rod assembly.

[0007] In some embodiments according to the present invention, the relay further includes a pair of fixed contact lead ends, and both ends of the movable contact along a first direction are used to respectively contact or separate from the pair of fixed contact lead ends, and the first direction is an arrangement direction of the pair of fixed contact lead ends; The elastic assembly is an elastic spring piece, the elastic spring piece including a base portion, a connection portion, and a deformation portion; the connection portion and the deformation portion are provided on both sides of the base along the first direction, the base is connected to the connection portion via the deformation portion, and the base is connected to the push rod assembly via the first rotation prevention structure; The connection portion of the elastic spring piece is connected to the movable contact assembly via the second anti-rotation structure, and the deformation portion is used to generate a deformation to provide a contact pressure.

[0008] In some embodiments of the present invention, along the first direction, the connection portion on one side of the base forms a first connection point with the movable contact assembly, and the connection portion on the other side of the base forms a second connection point with the movable contact assembly, with a first distance between the first connection point and the second connection point, and with a second distance between the deformation portions on either side of the base, the first distance being smaller than the second distance; The second distance is the maximum spacing between the deformations on either side of the base.

[0009] In some embodiments according to the invention, each of the deformations includes a first segment, a second segment, and a third segment; one end of the first segment is connected to the base; One end of the second segment is connected to the other end of the first segment, the second segment is bent from the first segment in a direction away from the movable contact assembly, and the second segments on both sides of the base are arranged obliquely with respect to the axis of the push rod assembly in a direction away from each other; One end of the third segment is connected to the other end of the second segment, the third segment is bent from the second segment in a direction approaching the movable contact assembly, and the third segments on both sides of the base are arranged obliquely with respect to the axis of the push rod assembly in a direction approaching each other, The other end of the third segment is connected to the connection portion, and the connection portions on both sides of the base portion extend from the third segment in directions approaching each other.

[0010] In some embodiments according to the invention, each of the deformations includes a fourth segment and a fifth segment; one end of the fourth segment is connected to the base; the fifth segment is arc-shaped, one end of the fifth segment is connected to the other end of the fourth segment, and the fifth segment extends from the fourth segment to the connection portion along an arc-shaped trajectory; The connectors on either side of the base extend from the fifth segment in a direction adjacent to each other.

[0011] In some embodiments according to the present invention, the relay further includes a pair of fixed contact lead ends, and both ends of the movable contact along a first direction are used to respectively contact or separate from the pair of fixed contact lead ends, and the first direction is an arrangement direction of the pair of fixed contact lead ends; The elastic assembly is an elastic spring piece, the elastic spring piece including a base portion, a connection portion, and a deformation portion; the connecting portion and the deforming portion are provided on both sides of the base along the first direction, the base is connected to the connecting portion via the deforming portion, and the base is connected to the movable contact assembly via the second rotation prevention structure; The connection portion of the elastic spring piece is connected to the push rod assembly via the first anti-rotation structure, and the deformation portion is used to generate a deformation to provide a contact pressure.

[0012] In some embodiments according to the present invention, the resilient assembly is connected to the movable contact via the second anti-rotation structure.

[0013] In some embodiments according to the present invention, the relay further includes a first magnetic conductive body, the first magnetic conductive body being disposed on a side of the movable contactor facing the fixed contact lead-out end.

[0014] In some embodiments of the present invention, the movable contact assembly further includes a second magnetic conductive body, the second magnetic conductive body being fixedly connected to a side of the movable contact facing away from the fixed contact lead end, the second magnetic conductive body being used to form a magnetic circuit with the first magnetic conductive body; The resilient assembly is connected to the second conductive body through the second anti-rotation structure.

[0015] In some embodiments according to the present invention, the first anti-rotation structure includes at least two first limit holes and at least two first limit protrusions; The at least two first limit holes are provided in one of the elastic assembly and the push rod assembly, The at least two first limit protrusions are provided on the other of the push rod assembly and the elastic assembly, and the at least two first limit protrusions are inserted into the at least two first limit holes.

[0016] In some embodiments of the present invention, the elastic assembly is an elastic spring piece, the elastic spring piece being provided with the at least two first limit holes; At least two convex rings are provided on a surface of the elastic spring piece facing the movable contact assembly, the at least two convex rings surround each of the at least two first limit holes, and the inner surface of the convex rings is flush with the hole wall of the first limit hole.

[0017] In some embodiments according to the present invention, the convex ring is formed by bending an edge of the first limit hole of the elastic spring piece in a direction approaching the movable contact assembly.

[0018] In some embodiments according to the present invention, the second anti-rotation structure includes at least two second limit holes and at least two second limit protrusions; the at least two second limit holes are provided in one of the elastic assembly and the movable contact assembly; The at least two second limit protrusions are provided on the other of the movable contact assembly and the elastic assembly, and the at least two second limit protrusions are inserted into the at least two second limit holes.

[0019] In some embodiments according to the present invention, the relay further includes a pair of fixed contact lead ends, and both ends of the movable contact along a first direction are used to contact or separate from the pair of fixed contact lead ends, respectively, and the first direction is an arrangement direction of the pair of fixed contact lead ends; Each of the second limit holes is elliptical, with the major axis of the ellipse being parallel to the first direction.

[0020] In some embodiments according to the present invention, the relay further includes a pair of fixed contact lead ends, and both ends of the movable contact along a first direction are used to contact or separate the pair of fixed contact lead ends, respectively, and the first direction is an arrangement direction of the pair of fixed contact lead ends; The resilient assembly and the movable contact assembly are limit-connected in the first direction, and / or the resilient assembly and the push rod assembly are limit-connected in the first direction.

[0021] In some embodiments of the present invention, the push rod assembly includes a contact bracket, the movable contact assembly includes one or more movable contacts, and the movable contact assembly is mounted within the contact bracket via the resilient assembly.

[0022] According to one embodiment of the present invention, there are at least the following advantages or beneficial effects: A relay according to an embodiment of the present invention includes a movable contact assembly, a push rod assembly, and an elastic body assembly. The elastic body assembly is connected to the push rod assembly via a first anti-rotation structure and to the movable contact assembly via a second anti-rotation structure. Therefore, the rotational freedom of the movable contact assembly relative to the push rod assembly is limited via the elastic body assembly, and rotation of the movable contact assembly relative to the push rod assembly is prevented. This ensures consistency of the contact positions between the movable contact assembly and the fixed contact pull-out end, improving the reliability of the relay.

[0023] Also, since the movable contact assembly does not rotate relative to the push rod assembly, ripple noise caused by contact between the movable contact assembly and the contact bracket when the movable contact assembly is energized is avoided. [Brief description of the drawings]

[0024] [Figure 1]FIG. 2 is a schematic configuration diagram of a relay according to a first exemplary embodiment. [Diagram 2] FIG. 2 is a cross-sectional view taken along the line AA in FIG. [Diagram 3] FIG. 2 is a cross-sectional view taken along line BB in FIG. [Figure 4] FIG. 2 is a schematic diagram of a moveable assembly according to an example embodiment; [Diagram 5] FIG. 1 is a schematic diagram of a push rod according to an example embodiment; [Figure 6] FIG. 5 is a schematic diagram showing the configuration of FIG. 4 with the contact bracket omitted, where the movable contact has not yet been brought into contact with the fixed contact lead-out end. [Figure 7] FIG. 2 is a schematic diagram of a resilient spring piece according to an exemplary embodiment; [Figure 8] FIG. 2 is a schematic exploded view of a movable assembly and two second magnetic conductive bodies of a relay according to a first exemplary embodiment. [Figure 9] 5 is a cross-sectional view taken along line CC in FIG. 4. [Figure 10] FIG. 10 is a partial enlarged view of a portion X in FIG. [Figure 11] FIG. 13 is a schematic exploded view of a movable assembly and two second magnetic conductive bodies of a relay according to a second exemplary embodiment. [Figure 12] FIG. 10 is a schematic diagram showing the configuration in which the contact bracket in FIG. 9 is omitted. [Figure 13] FIG. 13 is a schematic exploded view of a movable assembly and two second magnetic conductive bodies according to a third exemplary embodiment; [Figure 14] FIG. 13 is a schematic exploded view of a movable assembly and two second magnetic conductive bodies according to a fourth exemplary embodiment. [Figure 15] FIG. 5 is a schematic diagram showing the configuration of FIG. 4 with the contact bracket omitted, in which the movable contact is in contact with the fixed contact lead-out end. [Figure 16] FIG. 16 is a cross-sectional view taken along the line DD in FIG. 15, where the movable contact and the fixed contact are not in contact. [Figure 17]16 is a cross-sectional view taken along the line DD in FIG. 15, where the movable contact and the fixed contact are in contact. [Explanation of symbols]

[0025] 1000, contact container 1001, contact chamber 1002, first through hole 1100, Insulating cover 1110, Ceramic cover 1111, the third through hole 1120, flange member 1200, yoke board 1210, second through hole 2000, fixed contact lead-out end 3000, moving assembly 3100, movable contact assembly 3110, movable contact 3111, second limit protrusion 3200, Pushrod Assembly 3210, Push rod 3211, base 3212, rod part 3213, locking piece 3214, first limit protrusion 3220, Contact bracket 3221, upper wall 3222, side wall 3223, locking hole 3230, Elastic Assembly 4000, magnetic circuit section 4100, Coil bobbin 4200, coil 4300, fixed core 4400, movable core 4410, through hole 4500, reset member 5000, metal cover 6100, first conductive body 6200, second conductive body 6300, connecting parts 100, elastic spring piece 110, base 111, first limit hole 112, convex ring 112a, top side 112b, inner surface 113, Chamfering 120, connection part 121, second limit hole 130, transformation part 131, first segment 132, second segment 133, 3rd segment 134, 4th segment 135, 5th segment 136, first bent connection point (connection portion) 137, second bend connection point (connection part) 138, third bend connection point (connection part) 200, containment chamber 300, the first anti-rotation structure 400, second anti-rotation structure 400a, first connection point 400b, second connection point L1, the first distance L2, the second distance DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Next, exemplary embodiments will be described more fully with reference to the drawings. However, exemplary embodiments can be implemented in various forms and should not be understood to be limited to the embodiments described herein. On the contrary, these embodiments are provided to comprehensively and completely convey the concept of exemplary embodiments to those skilled in the art. The same reference numerals in the drawings indicate the same or similar structures, and detailed descriptions thereof will be omitted.

[0027] As shown in FIGS. 1 to 3, a relay according to an embodiment of the present invention includes a contact container 1000, a pair of fixed contact lead-out ends 2000, a movable assembly 3000, and a magnetic circuit portion 4000. As shown in FIG.

[0028] It is understood that the terms "comprising" and "having" in the embodiments of the invention, as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or device that comprises a series of steps or units is not limited to the recited steps or units, but may optionally include steps or units that are not recited, or may optionally include other steps or assemblies inherent to those processes, methods, products, or devices.

[0029] The contact container 1000 is a fixed part, contains a contact set, is mainly composed of a case, and is a device having a chamber. In addition, the contact container 1000 may be a device in which a plurality of parts are connected by a predetermined assembly method.

[0030] The contact container 1000 has a contact chamber 1001 therein. The contact container 1000 may include an insulating cover 1100 and a yoke plate 1200, the insulating cover 1100 being disposed to cover one side of the yoke plate 1200, and the insulating cover 1100 and the yoke plate 1200 being enclosed together to form the contact chamber 1001.

[0031] The insulating cover 1100 includes a ceramic cover 1110 and a flange member 1120. The ceramic cover 1110 is connected to the yoke plate 1200 via the flange member 1120. The flange member 1120 may be a metal part such as an iron-nickel alloy having a ring-shaped structure. One end of the flange member 1120 is connected to an opening edge of the ceramic cover 1110 by a method such as laser welding, brazing, resistance welding, or adhesion. The other end of the flange member 1120 is similarly connected to the yoke plate 1200 by a method such as laser welding, brazing, resistance welding, or adhesion. By providing the flange member 1120 between the ceramic cover 1110 and the yoke plate 1200, the connection between the ceramic cover 1110 and the yoke plate 1200 can be facilitated.

[0032] The contact vessel 1000 further includes a pair of first through holes 1002, which are connected to the contact chamber 1001. The first through holes 1002 are configured to allow the fixed contact lead ends 2000 to pass therethrough. In an embodiment of the present invention, the first through holes 1002 are opened in the ceramic cover 1110.

[0033] The pair of fixed contact lead ends 2000 are connected to the ceramic cover 1110 of the contact container 1000, and at least a portion of each fixed contact lead end 2000 is located within the contact chamber 1001. One of the pair of fixed contact lead ends 2000 functions as a current inflow terminal, and the other functions as a current outflow terminal.

[0034] A pair of fixed contact lead-out ends 2000 are respectively drilled into a pair of first through-holes 1002 and connected to ceramic cover 1110 by welding or the like.

[0035] The bottom of the fixed contact lead-out end 2000 functions as a fixed contact, and the fixed contact may be provided integrally with the bottom of the fixed contact lead-out end 2000 or may be provided separately.

[0036] 1 to 3, the movable assembly 3000 includes a movable contactor assembly 3100, a push rod assembly 3200, and an elastic assembly 3230. The movable contactor assembly 3100 is provided in the insulating cover 1100, and is attached to the push rod assembly 3200 via the elastic assembly 3230. Both ends of the movable contactor assembly 3100 in a first direction D1 are for contacting or separating from the pair of fixed contact lead ends 2000. The first direction D1 is the arrangement direction of the pair of fixed contact lead ends 2000.

[0037] The movable contactor assembly 3100 includes a movable contactor 3110, which may include a movable contactor body and movable contacts provided on both ends of the movable contactor body. The movable contacts may be separate parts and connected to the movable contactor body. Of course, the movable contacts may be integrally molded with the movable contactor body.

[0038] The number of movable contactors 3110 included in the movable contactor assembly 3100 is at least one, for example, one, two, three, etc. In the embodiment of the present invention, the movable contactor assembly 3100 includes two movable contactors 3110 arranged side by side. One end of each of the two movable contactors 3110 in the first direction D1 is used for contacting or separating from a fixed contact of one of the fixed contact pull-out ends 2000, and the other end of each of the two movable contactors 3110 in the first direction D1 is for contacting or separating from a fixed contact of the other fixed contact pull-out end 2000.

[0039] The movable contactor assembly 3100 may further include a second magnetic conductive body 6200, which is fixedly connected to the side of the movable contactor 3110 facing away from the fixed contact lead-out end 2000. The function of the second magnetic conductive body 6200 will be described later.

[0040] Here, the movable contact assembly 3100 includes a corresponding number of movable contactors 3110 and second magnetic conductive bodies 6200. Specifically, when the number of movable contactors 3110 is one, the number of second magnetic conductive bodies 6200 is also one, and when the number of movable contactors 3110 is multiple (including two), the number of second magnetic conductive bodies 6200 is also multiple. The multiple second magnetic conductive bodies 6200 are fixedly connected to the sides of the multiple movable contactors 3110 facing away from the fixed contact lead-out ends 2000, respectively.

[0041] Of course, in other embodiments, when the number of the movable contactor 3110 is one, the number of the second magnetic conductive bodies 6200 may be multiple. For example, at least one opening is provided in the center of the movable contactor 3110, and two adjacent second magnetic conductive bodies 6200 among the multiple second magnetic conductive bodies 6200 are inserted into one opening.

[0042] As shown in Figures 4 and 5, the moving direction of the movable contact 3110 is the second direction D2, and the direction perpendicular to the first direction D1 and the second direction D2 is the third direction D3. The push rod assembly 3200 includes a push rod 3210 and a contact bracket 3220. The contact bracket 3220 includes an upper wall 3221 and two side walls 3222, which are integrally connected to both sides of the upper wall 3221 along the third direction D3, respectively, that is, forming an inverted U-shaped bracket. The movable contact 3110 is attached to the contact bracket 3220 via an elastic assembly 3230. The upper end of the push rod 3210 is connected to the lower ends of the two side walls 3222 of the contact bracket 3220.

[0043] A locking hole 3223 is provided at the lower end of each side wall 3222 of the contact bracket 3220. The push rod 3210 includes a base 3211 and a rod portion 3212, and the base 3211 is connected to one axial end of the rod portion 3212. Locking pieces 3213 are provided on both sides of the base 3211, and the two locking pieces 3213 are engaged with the two locking holes 3223 of the contact bracket 3220, respectively, thereby realizing the fixing of the base 3211 and the contact bracket 3220. The elastic assembly 3230 is provided between the movable contact 3110 and the base 3211 to apply an elastic force to the movable contact 3110 so as to move toward the upper wall 3221. In this embodiment, one end of the resilient assembly 3230 is connected to the movable contact assembly 3100 via the second anti-rotation structure 400, and the other end of the resilient assembly 3230 is connected to the base 3211 via the first anti-rotation structure 300. The resilient assembly 3230 is used to provide contact pressure and to limit rotation of the movable contact assembly 3100 relative to the push rod assembly 3200 about the axis of the push rod assembly 3200.

[0044] Of course, in other embodiments, the contact bracket 3220 may have other structures, not all of which are listed here.

[0045] Here, when there are a plurality of movable contacts 3110, the plurality of movable contacts 3110 are arranged side by side along the third direction D3.

[0046] 1 to 3, the yoke plate 1200 has a second through hole 1210 penetrating two opposing side surfaces of the yoke plate 1200 along the thickness direction of the yoke plate 1200, and the second through hole 1210 is connected to the contact chamber 1001 of the contact container 1000. The rod portion 3212 is drilled in the second through hole 1210 so as to be movable along the axial direction. A base 3211 at one axial end of the rod portion 3212 is provided within the contact chamber 1001.

[0047] The relay further includes a metal cover 5000, which is connected to the side of the yoke plate 1200 facing away from the insulating cover 1100, and the metal cover 5000 is provided so as to cover the second through hole 1210 in the yoke plate 1200. The metal cover 5000 and the yoke plate 1200 together form a chamber for housing the fixed iron core 4300 and the movable iron core 4400 of the magnetic circuit unit 4000.

[0048] The magnetic circuit unit 4000 includes a coil bobbin 4100, a coil 4200, a fixed core 4300, a movable core 4400, and a reset member 4500. The coil bobbin 4100 is formed in a hollow cylindrical shape and is made of an insulating material. The metal cover 5000 is provided inside the coil bobbin 4100. The coil 4200 surrounds the coil bobbin 4100. The fixed core 4300 is fixedly provided inside the metal cover 5000, and a part of the fixed core 4300 is inserted into the second through hole 1210. The fixed core 4300 has a through hole 4410, which is provided corresponding to the position of the second through hole 1210, and is configured so that the rod portion 3212 is provided therein. The movable core 4400 is movably provided in the metal cover 5000, and is provided facing the fixed core 4300 along the axial direction of the rod portion 3212. The movable core 4400 is connected to the rod portion 3212, and configured to be attracted to the fixed core 4300 when the coil 4200 is energized. The movable core 4400 and the rod portion 3212 may be connected by screwing, caulking, welding, or other methods.

[0049] The reset member 4500 is located inside the metal cover 5000, and is provided between the fixed core 4300 and the movable core 4400, and is configured to reset the movable core 4400 when the power supply to the coil 4200 is cut off. The reset member 4500 may be a spring, and is sleeved on the rod portion 3212.

[0050] When the coil 4200 is energized, the magnetic circuit portion 4000 can drive the rod portion 3212 to push the push rod assembly 3200 to move it upward. When the movable contactor 3110 comes into contact with the fixed contact pull-out end 2000, the movable contactor 3110 is stopped by the fixed contact pull-out end 2000, while the rod portion 3212 and the base 3211 continue to move upward until the overtravel is completed.

[0051] 2 to 4, the relay according to the embodiment of the present invention further includes a first magnetic conductive body 6100. The movable contactor 3110 has a first side and a second side arranged opposite to each other along the second direction D2. Here, the first side is a side facing the fixed contact lead end 2000, and the second side is a side facing away from the fixed contact lead end 2000. The first magnetic conductive body 6100 is provided on the first side of the movable contactor 3110 and is provided in the contact chamber 1001.

[0052] If the movable contactor assembly 3100 includes only the movable contactor 3110 and does not include the second conductive body 6200, when the movable contactor 3110 is energized, the first conductive body 6100 will be magnetized, thereby forming an attractive force on the movable contactor 3110 in the contact closing direction, and this attractive force can resist the electrical repulsive force generated by the short-circuit current between the movable contactor 3110 and the fixed contact pull-out end 2000, thereby preventing the movable contactor 3110 from bouncing off the fixed contact pull-out end 2000, and achieving the purpose of short-circuit resistance.

[0053] When the movable contact assembly 3100 includes the movable contact 3110 and the second magnetic conductive body 6200, the second magnetic conductive body 6200 is fixedly connected to the movable contact 3110, and the second magnetic conductive body 6200 forms a magnetic circuit with the first magnetic conductive body 6100.

[0054] When both ends of the movable contactor 3110 contact the pair of fixed contact drawn ends 2000, the second magnetic conductive body 6200 moving together with the movable contactor 3110 approaches or contacts the first magnetic conductive body 6100, thereby forming a magnetic circuit surrounding the movable contactor 3110 between the first magnetic conductive body 6100 and the second magnetic conductive body 6200. When a short-circuit current flows through the movable contactor 3110, a magnetic attraction force in the contact pressure direction is generated between the first magnetic conductive body 6100 and the second magnetic conductive body 6200. This magnetic attraction force can resist the electric repulsion force generated by the short-circuit current between the movable contactor 3110 and the fixed contact drawn ends 2000, ensuring that the movable contactor 3110 does not bounce off the fixed contact drawn ends 2000.

[0055] It will be understood that the second conductive body 6200 and the movable contact 3110 may be fixedly connected by crimping, but is not limited to this.

[0056] The first magnetic conductive body 6100 and the second magnetic conductive body 6200 may both be straight or U-shaped, and the first magnetic conductive body 6100 and the second magnetic conductive body 6200 may be made of a magnetic conductive material such as iron, cobalt, nickel, or an alloy thereof.

[0057] Here, when the movable contact assembly 3100 includes multiple movable contactors 3110 arranged in a line, the number of first magnetic bodies 6100 may be multiple, the number of first magnetic bodies 6100 corresponding to the number of movable contactors 3110, and the multiple first magnetic bodies 6100 are each positioned on the side facing the fixed contact pull-out end 2000 of the multiple movable contactors 3110.

[0058] Of course, in other embodiments, when the movable contact assembly 3100 includes multiple movable contacts 3110 arranged side by side, the number of first magnetic bodies 6100 may be one, and this first magnetic body 6100 spans the multiple movable contacts 3110 in the third direction D3.

[0059] The first magnetic conductive body 6100 may be connected to the contact receptacle 1000 via two connecting members 6300. One end of the two connecting members 6300 is connected to the contact receptacle 1000, and the other end of the two connecting members 6300 is connected to the first magnetic conductive body 6100.

[0060] The first magnetic conductive body 6100 is connected to the contact container 1000 via the connecting member 6300, whereby the short-circuit resistant magnetic attraction force is transferred to the contact container 1000. Since the contact container 1000 is a fixed component, excessive coil holding force is not required. As a result, it is understood that the power consumption of the relay coil is reduced, the relay is miniaturized, and the short-circuit resistant capability is improved.

[0061] In one embodiment, the connecting member 6300 is rod-shaped, one axial end of the connecting member 6300 is fixedly connected to the ceramic cover 1110 of the insulating cover 1100, and the other axial end of the connecting member 6300 is connected to the first magnetic conductive body 6100.

[0062] In the embodiment of the present invention, a third through-hole 1111 is opened in the upper wall of the ceramic cover 1110 of the contact container 1000, and the connecting member 6300 is drilled in the third through-hole 1111. The connecting method between one end of the connecting member 6300 in the axial direction and the ceramic cover 1110 may have various embodiments, such as welding, crimping, screwing, adhesion, etc. The connecting method between the other end of the connecting member 6300 and the first magnetic conductive body 6100 may also have various embodiments, such as welding, crimping, screwing, adhesion, etc.

[0063] When the connection method between one end of the connecting member 6300 and the ceramic cover 1110 is welding, it can be understood that by welding the connecting member 6300 to the upper wall of the ceramic cover 1110, a metallized layer can be processed only around the periphery of the third through hole 1111 on the outer wall surface of the upper wall without processing a metallized layer on the inner wall surface of the upper wall, which is convenient to process and simplifies the processing steps.

[0064] It is understood that one end of the connecting member 6300 may be connected to the outer wall surface of the ceramic cover 1110, may be connected to the inner wall surface of the ceramic cover 1110, or may be connected to both the outer wall surface and the inner wall surface of the ceramic cover 1110 simultaneously.

[0065] In an embodiment of the present invention, one end of the connecting member 6300 is connected to the periphery of the third through-hole 1111 of the ceramic cover 1110 .

[0066] From this, it can be seen that when the first magnetic conductive body 6100 is connected to the ceramic cover 1110 via the connecting member 6300, the short-circuit resistant magnetic attraction force is transferred to the ceramic cover 1110, so that excessive coil holding force is not required, and as a result, the power consumption of the relay coil is reduced, the relay is miniaturized, and the short-circuit resistant capability is improved. Meanwhile, since the connecting member 6300 is connected to the ceramic cover 1110, it does not occupy too much space in the contact chamber 1001, so as to ensure the arc-extinguishing space of the arc-extinguishing assembly and the operating space of the push rod.

[0067] Furthermore, since the first magnetic conductive body 6100 is connected to the rod-shaped connecting member 6300, various connection methods, such as crimping, laser welding, fastening, and adhesion, can be used between the first magnetic conductive body 6100 and the connecting member 6300, thereby enriching the number of connection methods.

[0068] As an example, the connection member 6300 is a solid rod. In this way, the connection between the connection member 6300 and the first magnetic conductive body 6100 can be made by crimping, making the connection more reliable. In addition, the solid rod has higher support strength and is less likely to deform.

[0069] 6 and 10, the elastic assembly 3230 includes an elastic spring piece 100. As an example, the elastic spring piece 100 is a piece-like structure made of a metal material and formed by a bending process.

[0070] The elastic spring piece 100 includes a base 110, a connection portion 120, and a deformation portion 130. The base 110 is connected to the push rod 3210 via a first anti-rotation structure 300. The connection portion 120 and the deformation portion 130 are provided on both sides of the base 110 along the first direction D1, and the base 110 is connected to the connection portion 120 via the deformation portion 130. The connection portion 120 of the elastic spring piece 100 is connected to the movable contactor assembly 3100 via a second anti-rotation structure 400. Here, the deformation portion 130 is used to generate deformation and provide contact pressure.

[0071] As shown in FIG. 7, the elastic spring piece 100 is arranged on the second side of the movable contact 3110, and two connection portions 120 and two deformation portions 130 are provided on each side of the base 110 in the first direction D1, and the base 110 is connected to the two connection portions 120 via the two deformation portions 130 provided on each side of the base 110 along the first direction D1.

[0072] In one embodiment of the present application, the elastic spring piece 100 includes a base portion 110, a connection portion 120, and a deformation portion 130, the base portion 110 is connected to the push rod 3210 via a first anti-rotation structure 300, the connection portion 120 is connected to the movable contact assembly 3100 via a second anti-rotation structure 400, the deformation portion 130 can generate deformation to provide contact pressure, and the movable contact assembly 3100 is connected to the push rod 3210 via the elastic spring piece 100, preventing rotation of the movable contact assembly 3100 relative to the push rod 3210, thereby ensuring the consistency of the contact positions between the movable contact assembly 3100 and the fixed contact pull-out end 2000, and improving the reliability of the relay.

[0073] In addition, since the movable contact assembly 3100 does not rotate, it is possible to reduce or prevent the movable contact assembly 3100 from contacting the side wall of the contact bracket 3220 to some extent, thereby avoiding the generation of large ripple noise (metal friction noise). In addition, it is possible to prevent an increase in the number of frictions, an increase in the fitting gap due to increased wear, and an increase in the deflection force and friction resistance. Furthermore, it is possible to reduce metal particles due to mutual friction between the movable contact assembly 3100 and the contact bracket 3220, thereby reducing the probability that metal particles will fall on the contact surface of the contact, and further reducing the quality risk of increased contact resistance and failure to conduct electricity.

[0074] It should be noted that the first anti-rotation structure 300 is used to limit relative rotation between the elastic spring piece 100 and the push rod assembly 3200 around the axis of the push rod assembly 3200, and the second anti-rotation structure 400 is used to limit relative rotation between the elastic spring piece 100 and the movable contact assembly 3100 around the axis of the push rod assembly 3200, thereby enabling the elastic spring piece 100 to limit the rotation of the movable contact assembly 3100 relative to the push rod assembly 3200 around the axis of the push rod assembly 3200.

[0075] In another embodiment, the base portion 110 is connected to the movable contact assembly 3100 via a second anti-rotation structure 400 and the connection portion 120 is connected to the push rod 3210 via a first anti-rotation structure 300 .

[0076] Furthermore, when there are multiple movable contacts 3110, the anti-rotation functions of the first anti-rotation structure 300 and the second anti-rotation structure 400 allow the use of only one contact bracket 3220, thereby avoiding an increase in the space occupied by installing a contact bracket 3220 for each movable contact 3110.

[0077] 6, the elastic spring piece 100 and the movable contact 3110 together surround a receiving chamber 200 for receiving the second magnetic conductive body 6200. The receiving chamber 200 can play a role in avoiding the second magnetic conductive body 6200, and can avoid interference between the elastic spring piece 100 and the second magnetic conductive body 6200 during the overtravel process.

[0078] As shown in Figures 6 and 15, along the first direction D1, the connection portion 120 on one side of the base 110 forms a first connection point 400a with the movable contact assembly 3100, and the connection portion 120 on the other side of the base 110 forms a second connection point 400b with the movable contact assembly 3100. There is a first distance L1 between the first connection point 400a and the second connection point 400b, and there is a second distance L2 between the deformation portions 130 on both sides of the base 110, and the first distance L1 is smaller than the second distance L2. Here, the first distance L1 is the distance between the center of the first connection point 400a and the center of the second connection point 400b, and the second distance L2 is the maximum distance between the deformation portions 130 on both sides of the base 110.

[0079] In the embodiment of the present invention, since the first distance L1 is smaller than the second distance L2, in the overtravel, the elastic spring piece 100 is compressed by the push rod 3210 and the movable contactor assembly 3100, and the deformation parts 130 on both sides of the base 110 can be deformed along the direction away from each other (the deformation parts 130 on both sides spread outward), so that the elastic spring piece 100 can be prevented from being locked and unable to provide contact pressure. Also, since the first distance L1 is smaller than the second distance L2, the deformation parts 130 on both sides of the base 110 are equivalent to being bent along the direction toward each other as a whole, thus reducing the overall volume of the elastic spring piece 100 and reducing the space occupation rate.

[0080] Of course, in other embodiments, the first distance L1 may be greater than the second distance L2 if the internal space of the relay is large enough.

[0081] The deformed portions 130 on both sides of the base 110 are first bent from both sides of the base 110 in directions away from each other, and then bent in directions approaching the movable contact assembly 3100 and approaching each other.

[0082] As shown in FIG. 6, the connection portions 120 on both sides of the base 110 of the elastic spring piece 100 are respectively connected to the ends of the movable contactor 3110 in the first direction D1, so that the movable contactor assembly 3100 can be more stably connected to the elastic spring piece 100, and oscillation of the movable contactor assembly 3100 that affects the consistency of the contact points can be further avoided.

[0083] 6 to 8, the movable contactor assembly 3100 includes at least two movable contactors 3110 arranged side by side and at least two second magnetic bodies 6200, and the at least two second magnetic bodies 6200 are fixedly connected to the at least two movable contactors 3110, respectively. At least two deformation parts 130 and at least two connection parts 120 are provided on each side of the base part 110 of the elastic spring piece 100, and the base part 110 is connected to the push rod 3210 via the first anti-rotation structure 300, and one side of the base part 110 is connected to the at least two connection parts 120 via the at least two deformation parts 130, respectively. At least four connection parts 120 are connected to the at least two movable contactors 3110 of the movable contactor assembly 3100 via the second anti-rotation structure 400.

[0084] In one embodiment of the present application, the movable contact assembly 3100 includes two movable contacts 3110 and two second magnetic bodies 6200, and includes two deformation portions 130 and two connection portions 120 on each side of the base portion 110. The four connection portions 120 are divided into two pairs, and the connection portions 120 of each pair are arranged opposite each other in the first direction D1. The two pairs of connection portions 120 are connected to the two movable contacts 3110 by the second anti-rotation structure 400.

[0085] As described above, in this embodiment of the present application, each movable contactor 3110 corresponds to a pair of connection portions 120, so that even if the contact gaps between the multiple movable contactors 3110 and the fixed contact pull-out ends do not match, the multiple movable contactors 3110 will not interfere with each other.

[0086] 6 and 7, each of the deformation portions 130 includes a first segment 131, a second segment 132, and a third segment 133. One end of the first segment 131 is connected to the base 110, one end of the second segment 132 is connected to the other end of the first segment 131, the second segment 132 is bent from the first segment 131 in a direction away from the movable contactor assembly 3100, the second segments 132 on both sides of the base 110 are obliquely provided with respect to the axis of the push rod assembly 3200 in a direction away from each other, and one end of the third segment 133 is connected to the second segment 132. and the third segment 133 is bent from the second segment 132 in a direction approaching the movable contact assembly 3100, and the third segments 133 on both sides of the base 110 are arranged obliquely with respect to the axis of the push rod assembly 3200 in a direction approaching each other, where the other end of the third segment 133 is connected to the connection portion 120, and the connection portions 120 on both sides of the base 110 extend from the third segment 133 in a direction approaching each other.

[0087] Furthermore, a first bent connection portion 136 is formed between the first segment 131 and the second segment 132 of each deformation portion 130, and along the second direction D2, the connection portion 120 corresponds to the position of the first bent connection portion 136.

[0088] As shown in Figures 5, 7, 9, and 10, in one embodiment, the base 110 may be a one-piece structure. The first anti-rotation structure 300 includes at least two first limit holes 111 and at least two first limit protrusions 3214, where the at least two first limit holes 111 are disposed on one of the elastic assembly 3230 and the push rod assembly 3200, and the at least two first limit protrusions 3214 are disposed on the other of the elastic assembly 3230 and the push rod assembly 3200.

[0089] In one embodiment of the present application, at least two first limit holes 111 are provided in the base 110, and the first limit holes 111 may penetrate both sides of the base 110 in the thickness direction, and at least two first limit protrusions 3214 are provided on a surface of the push rod 3210 facing the movable contactor assembly 3100. The at least two first limit protrusions 3214 are inserted into the at least two first limit holes 111.

[0090] In the present embodiment, the push rod 3210 has at least two first limit protrusions 3214 on the side of the base 3211 facing the fixed contact pull-out end 2000, and the at least two first limit protrusions 3214 are arranged side by side along the third direction D3.

[0091] It should be noted that since the first anti-rotation structure 300 of the embodiment of the present application includes at least two first limit protrusions 3214 and first limit holes 111 that cooperate with each other, the shape of the first limit hole 111 may be circular.

[0092] Of course, in other embodiments, the first anti-rotation structure 300 may include one first limit protrusion 3214 and one first limit hole 111, and the shape of the first limit hole 111 may be non-circular, such as rectangular, elliptical, or triangular. The first limit protrusion 3214 is adapted to the shape of the first limit hole 111 and inserted into the first limit hole 111, and can have the effect of preventing relative rotation between the push rod 3210 and the elastic spring piece 100.

[0093] It will be understood that the first anti-rotation structure 300 can prevent the elastic spring piece 100 from rotating about an axis perpendicular to the plane on which the movable contact 3110 is located.

[0094] It is understood that in other embodiments, the first anti-rotation structure 300 may include a crimped structure, a welded structure, an adhesive structure, etc. When the first anti-rotation structure 300 is a crimped structure, the base 110 and the push rod assembly 3200 are crimped, when the first anti-rotation structure 300 is a welded structure, the base 110 and the push rod assembly 3200 are welded, and when the first anti-rotation structure 300 is an adhesive structure, the base 110 and the push rod assembly 3200 are adhesively bonded.

[0095] In other embodiments, the first anti-rotation structure 200 may include a fastener that fastens the resilient spring piece 100 and the push rod assembly 3200 together.

[0096] 10, a convex ring 112 surrounding the first limit hole 111 is provided on one side of the base 110 facing the movable contact 3110, and an inner peripheral surface 112b of the convex ring 112 is flush with the hole wall of the first limit hole 111. Furthermore, the convex ring 112 is formed by bending the hole edge of the first limit hole 111 of the base 110 in a direction approaching the movable contact 3110. In this way, by providing the convex ring 112 on the edge of the first limit hole 111, friction between the first limit protrusion 3214 and the base 110 can be reduced when assembling the base 110 to the push rod 3210, and scraps can be prevented from occurring. Furthermore, the convex ring 112 formed by bending increases the contact area between the first limit protrusion 3214 and the base portion 110, and can reduce wear between the first limit protrusion 3214 and the base portion 110 during movement.

[0097] The convex ring 112 has an upper surface 112a facing away from the base 110, and a chamfer 113 is provided at the connection portion between the upper surface 112a and the inner peripheral surface 112b. By providing the chamfer 113 at the connection portion between the upper surface 112a and the inner peripheral surface 112b, burrs generated in the process of forming the convex ring 112 can be removed, and scrap generation between the first limit projection 3214 and the inner peripheral surface 112b of the convex ring 112 can be further prevented.

[0098] As shown in Figures 6 and 7, the second anti-rotation structure 400 includes at least two second limit holes 121 and at least two second limit protrusions 3111, where the at least two second limit holes 121 are arranged on one of the elastic assembly 3230 and the movable contact assembly 3100, and the at least two second limit protrusions 3111 are arranged on the other of the elastic assembly 3230 and the movable contact assembly 3100.

[0099] In one embodiment of the present application, the number of the second limit holes 121 is four, and the number of the second limit protrusions 3111 is four. The four second limit holes 121 are provided in each of the four connection portions 120, the four second limit protrusions 3111 are provided in the two movable contactors 3110 of the movable contactor assembly 3100, and one second limit protrusion 3111 is provided at each end of one movable contactor 3110.

[0100] It is understood that in other embodiments, the second anti-rotation structure 400 may include a crimped structure, a welded structure, an adhesive structure, etc. When the second anti-rotation structure 400 is a crimped structure, the base 110 and the push rod assembly 3200 are crimped, when the second anti-rotation structure 400 is a welded structure, the base 110 and the push rod assembly 3200 are welded, and when the second anti-rotation structure 400 is an adhesive structure, the base 110 and the push rod assembly 3200 are adhesively bonded.

[0101] In other embodiments, the second anti-rotation structure 400 may include a fastener that fastens the resilient spring piece 100 and the push rod assembly 3200 together.

[0102] It is understood that the first anti-rotation structure 300 and the second anti-rotation structure 400 may be the same or different. As an example, both the first anti-rotation structure 300 and the second anti-rotation structure 400 may be limit connection structures or fixed connection structures, or the first anti-rotation structure 300 is a limit connection structure and the second anti-rotation structure 400 is a fixed connection structure.

[0103] In one embodiment, the resilient assembly 3230 and the movable contact assembly 3100 are limit-connected along the first direction D1, and / or the resilient assembly 3230 and the push rod assembly 3200 are limit-connected along the first direction D1, thereby reducing the swing range of the movable contact assembly 3100 relative to the push rod assembly 3200 in the first direction D1, and improving the shock resistance performance of the entire relay.

[0104] Preferably, the elastic assembly 3230 and the movable contact assembly 3100 are limit-connected along the first direction D1, and the elastic assembly 3230 and the push rod assembly 3200 are limit-connected along the first direction D1, so that when the relay encounters a large impact, no displacement occurs between the movable contact and the fixed contact, and the contact resistance is prevented from becoming unstable.

[0105] In another embodiment, as shown in Figures 16 and 17, the shape of each second limit hole 121 of the second anti-rotation structure 400 is elliptical, and the major axis of the ellipse is parallel to the first direction D1. By designing the second limit hole 121 as an ellipse, the second limit protrusion 3111 is restricted by the outer edge of the second limit hole 121 before the movable contact and the fixed contact contact, so that the movable contactor assembly 3100 does not swing (as shown in Figure 16). After the movable contact and the fixed contact contact contact, the elastic spring piece 100 is compressed, and the connection part 120 and the deformation part 130 on both sides of the base part 110 tend to move to both sides. At this time, the elliptical second limit hole 121 provides a space for the connection part 120 to move, and releases the stress generated inside the elastic spring piece 100 after it is subjected to pressure, and can prevent the stress inside the elastic spring piece 100 from being concentrated too much and affecting the service life.

[0106] It should be noted that the distance that the connecting portion 120 moves within the ellipse is small, and therefore does not affect the relative positions of the movable contact and the fixed contact.

[0107] As shown in Figures 11 and 12, the relay of the second embodiment has a structure that is basically similar to that of the relay of the first embodiment. Therefore, in the following description of the relay of the second embodiment, the structure already described in the first embodiment will not be described repeatedly. Also, the same reference numerals are used to denote structures similar to those of the relay described in the first embodiment. Therefore, in the following description of the present embodiment, differences from the relay of the first embodiment will be mainly described.

[0108] In the second embodiment, the connection portions 120 on both sides of the base portion 110 are connected to both ends of the second magnetic body 6200 along the first direction D1 via the second anti-rotation structure 400.

[0109] Each deformation portion 130 of the elastic spring piece 100 includes a fourth segment 134 and a fifth segment 135. One end of the fourth segment 134 is connected to the base portion 110, and the fifth segment 135 is arc-shaped, one end of the fifth segment 135 is connected to the other end of the fourth segment 134, and the fifth segment 135 extends along an arc-shaped trajectory from the fourth segment 134 to the connection portion 120, where the connection portions 120 on both sides of the base portion 110 extend from the fifth segment 135 in directions approaching each other.

[0110] Furthermore, a second bent connection portion 137 is formed between the fifth segment 135 and the fourth segment 134, and a third bent connection portion 138 is formed between the fifth segment 135 and the connection portion 120. The second bent connection portion 137 corresponds to the position of the third bent connection portion 138 along the second direction D2.

[0111] As shown in Fig. 13, the relay of the third embodiment has a structure basically similar to that of the relay of the first embodiment. Therefore, in the following description of the relay of the third embodiment, the structure already described in the first embodiment will not be described repeatedly. Also, the same reference numerals are used for structures similar to the structure of the relay described in the first embodiment. Therefore, in the following description of the present embodiment, differences from the relay of the first embodiment will be mainly described.

[0112] In the third embodiment, the movable contact assembly 3100 includes one movable contact 3110 and one second magnetic conductive body 6200, and the relay includes one elastic spring piece 100. Each side of the base portion 110 of the elastic spring piece 100 is provided with one connection portion 120 and one deformation portion 130.

[0113] Furthermore, the two first limit protrusions 3214 of the first anti-rotation structure 300 may also be disposed along the first direction D1.

[0114] As shown in FIG. 14, the relay of the fourth embodiment has a structure that is basically similar to that of the relay of the first embodiment. Therefore, in the following description of the relay of the fourth embodiment, the structure already described in the first embodiment will not be described repeatedly. Also, the same reference numerals are used for structures similar to the structure of the relay described in the first embodiment. Therefore, in the following description of the present embodiment, differences from the relay of the first embodiment will be mainly described.

[0115] In the fourth embodiment, the movable contact assembly 3100 includes three movable contacts 3110 and three second magnetic bodies 6200, and each side of the base 110 of the elastic spring piece 100 includes three connection parts 120 and three deformation parts 130, and the three connection parts 120 and the three deformation parts 130 are arranged side by side along the third direction D3, and each side of the base 110 is connected to the three connection parts 120 via the three deformation parts 130. The first rotation prevention structure 300 includes three first limit protrusions 3214 and three first limit holes 111.

[0116] It should be noted that in the relays of the above first to fourth embodiments, the short-circuit resistant structure may also be of a follower type in which the first magnetic conductive body 6100 is fixedly connected to the upper wall 3221 of the contact bracket.

[0117] Furthermore, the elastic assembly 3230 is not limited to adopting the elastic spring piece 100, for example, the elastic assembly 3230 may include at least two compression springs, one ends of the at least two compression springs are connected to the push rod 3210 via the first anti-rotation structure 300, and the other ends of the at least two compression springs are connected to the movable contact assembly 3100 via the second anti-rotation structure 400.

[0118] In addition, the various embodiments / embodiments provided by the present invention can be combined with each other without causing any contradiction, and the description thereof will be omitted here.

[0119] In the embodiments of the invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" means two or more unless otherwise limited. Terms such as "attach", "contact", "connect", and "fixed" should be understood broadly. For example, "connection" may be a fixed connection, a removable connection, or an integral connection. "Contact" may be a direct connection or an indirect connection via an intermediate medium. The specific meanings of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to the specific circumstances.

[0120] In describing the embodiments of the present invention, the orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "front," and "rear" are orientations or positional relationships based on the drawings and are intended merely to facilitate the explanation and simplification of the embodiments of the present invention, and do not indicate or imply that the devices or units referred to have a particular direction or are required to be configured and operated in a particular orientation, and therefore should not be understood as limitations on the embodiments of the invention.

[0121] In the description herein, the terms "one embodiment," "some embodiments," "particular embodiment," and the like mean that the particular feature, structure, material, or characteristic described in connection with this embodiment or example is included in at least one embodiment or example of the invention. In the present specification, general expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics described may be connected in any suitable manner in any one or more embodiments or examples.

[0122] The above is only a preferred embodiment of the invention, and is not intended to limit the invention, and those skilled in the art can make various modifications and changes to the invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the invention should be included in the protection scope of the invention.

Claims

1. A relay including a movable contact assembly, a push rod assembly, and a resilient assembly, The movable contact assembly includes a movable contact, the push rod assembly is used to push and move the movable contact assembly so as to bring the movable contact into contact with or separate from the fixed contact lead-out end; The resilient assembly is connected to the push rod assembly via a first anti-rotation structure and to the movable contact assembly via a second anti-rotation structure, and the resilient assembly is used to provide contact pressure and to limit rotation of the movable contact assembly relative to the push rod assembly about an axis of the push rod assembly. A relay characterized by:

2. The relay further includes a pair of fixed contact lead ends, and both ends of the movable contact along a first direction are used to contact or separate from the pair of fixed contact lead ends, respectively, and the first direction is an arrangement direction of the pair of fixed contact lead ends; The elastic assembly is an elastic spring piece, the elastic spring piece including a base portion, a connection portion, and a deformation portion; the connection portion and the deformation portion are provided on both sides of the base along the first direction, the base is connected to the connection portion via the deformation portion, and the base is connected to the push rod assembly via the first rotation prevention structure, The connection portion of the elastic spring piece is connected to the movable contact assembly through the second anti-rotation structure, and the deformation portion is used to generate a deformation and provide a contact pressure.

2. A relay as claimed in claim 1.

3. Along the first direction, the connection portion on one side of the base forms a first connection point with the movable contact assembly, and the connection portion on the other side of the base forms a second connection point with the movable contact assembly, with a first distance between the first connection point and the second connection point, and with a second distance between the deformation portions on both sides of the base, the first distance being smaller than the second distance; The second distance is the maximum distance between the deformations on either side of the base.

3. A relay as claimed in claim 2.

4. Each of the deformation portions includes a first segment, a second segment, and a third segment, one end of the first segment is connected to the base; One end of the second segment is connected to the other end of the first segment, the second segment is bent from the first segment in a direction away from the movable contact assembly, and the second segments on both sides of the base are arranged obliquely with respect to the axis of the push rod assembly in a direction away from each other, One end of the third segment is connected to the other end of the second segment, the third segment is bent from the second segment in a direction approaching the movable contact assembly, and the third segments on both sides of the base are arranged obliquely with respect to the axis of the push rod assembly in directions away from each other, The other end of the third segment is connected to the connection portion, and the connection portions on both sides of the base portion extend from the third segment in a direction approaching each other.

3. A relay as claimed in claim 2.

5. Each of the deformations includes a fourth segment and a fifth segment, one end of the fourth segment is connected to the base; the fifth segment is arc-shaped, one end of the fifth segment is connected to the other end of the fourth segment, and the fifth segment extends from the fourth segment to the connection portion along an arc-shaped trajectory; The connecting portions on both sides of the base portion extend in a direction approaching each other from the fifth segment.

3. A relay as claimed in claim 2.

6. The relay further includes a pair of fixed contact lead ends, and both ends of the movable contact along a first direction are used to contact or separate from the pair of fixed contact lead ends, respectively, and the first direction is an arrangement direction of the pair of fixed contact lead ends; The elastic assembly is an elastic spring piece, the elastic spring piece including a base portion, a connection portion, and a deformation portion; the connecting portion and the deforming portion are provided on both sides of the base along the first direction, the base is connected to the connecting portion via the deforming portion, and the base is connected to the movable contact assembly via the second rotation prevention structure; The connection portion of the elastic spring piece is connected to the push rod assembly through the first anti-rotation structure, and the deformation portion is used to generate a deformation and provide a contact pressure.

2. A relay as claimed in claim 1.

7. The resilient assembly is connected to the movable contact via the second anti-rotation structure.

2. A relay as claimed in claim 1.

8. The relay further includes a first magnetic conductive body, the first magnetic conductive body being disposed on a side of the movable contactor facing the fixed contact lead-out end.

2. A relay as claimed in claim 1.

9. the movable contact assembly further includes a second magnetic conductive body, the second magnetic conductive body being fixedly connected to a side of the movable contact facing away from the fixed contact lead-out end, the second magnetic conductive body being used to form a magnetic circuit with the first magnetic conductive body; The elastic assembly is connected to the second magnetic conductive body via the second anti-rotation structure.

9. A relay as claimed in claim 8.

10. The first rotation prevention structure includes at least two first limit holes and at least two first limit protrusions; The at least two first limit holes are provided in one of the elastic assembly and the push rod assembly, The at least two first limit protrusions are provided on the other of the push rod assembly and the elastic assembly, and the at least two first limit protrusions are inserted into the at least two first limit holes.

2. A relay as claimed in claim 1.

11. The elastic assembly is an elastic spring piece, and the elastic spring piece is provided with the at least two first limit holes; At least two convex rings are provided on a surface of the elastic spring piece facing the movable contact assembly, the at least two convex rings surround each of the at least two first limit holes, and an inner peripheral surface of the convex ring is flush with a hole wall of the first limit hole.

11. A relay as claimed in claim 10.

12. The convex ring is formed by bending the edge of the first limit hole of the elastic spring piece in a direction approaching the movable contact assembly.

12. A relay as claimed in claim 11.

13. The second rotation prevention structure includes at least two second limit holes and at least two second limit protrusions; the at least two second limit holes are provided in one of the elastic assembly and the movable contact assembly; The at least two second limit protrusions are provided on the other of the movable contact assembly and the elastic assembly, and the at least two second limit protrusions are inserted into the at least two second limit holes.

2. A relay as claimed in claim 1.

14. The relay further includes a pair of fixed contact lead ends, and both ends of the movable contact along a first direction are used to contact or separate from the pair of fixed contact lead ends, respectively, and the first direction is an arrangement direction of the pair of fixed contact lead ends; Each of the second limit holes is elliptical, and the major axis of the ellipse is parallel to the first direction.

14. A relay as claimed in claim 13.

15. The relay further includes a pair of fixed contact lead ends, and both ends of the movable contact along a first direction are used to contact or separate the pair of fixed contact lead ends, respectively, and the first direction is an arrangement direction of the pair of fixed contact lead ends; The elastic assembly and the movable contact assembly are limit-connected in the first direction, and / or the elastic assembly and the push rod assembly are limit-connected in the first direction.

2. A relay as claimed in claim 1.

16. The push rod assembly includes a contact bracket, the movable contact assembly includes one or more movable contacts, and the movable contact assembly is mounted within the contact bracket via the resilient assembly.

2. A relay as claimed in claim 1.

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