Relay

Abstract

To provide a relay in which a movable contactor can avoid rotating with respect to a push rod assembly.SOLUTION: The present invention discloses a relay including a movable contactor assembly, a push rod assembly, a position limiting assembly, and an elastic assembly. The movable contactor assembly includes a movable contactor, the push rod assembly is used to push and move the movable contactor assembly to contact or separate the movable contactor from a fixed contact pull-out end, the position limiting assembly is connected to the movable contactor assembly and the push rod assembly to limit rotation of the movable contactor assembly about the axis of the push rod assembly relative to the push rod assembly, and the position limiting assembly can be deformed to adapt to overtravel, and the elastic assembly is intended to provide contact pressure.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 high voltage DC relay is a type of relay, and a high voltage 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 assembly. 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 assembly is compressed to form a contact pressure.

[0004] However, the movable contact of the high voltage 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 moving contact from rotating relative to the push rod assembly.

[0006] The relay according to the embodiment of the present invention includes: a movable contact assembly including a movable contact; a push rod assembly for pushing and moving the movable contact assembly so as to bring the movable contact into contact with or separate from the fixed contact lead-out end; a position limiting assembly connected to the movable contact assembly and the push rod assembly for limiting rotation of the movable contact assembly relative to the push rod assembly about an axis of the push rod assembly; and a resilient assembly for providing a contact pressure.

[0007] In some embodiments according to the present invention, the position limiting assembly is deformable to accommodate overtravel.

[0008] In some embodiments according to the invention, the resilient assembly is a first resilient spring strip; The first elastic spring piece is connected to one of the push rod assembly and the movable contact assembly, and abuts against the other of the push rod assembly and the movable contact assembly.

[0009] In some embodiments according to the present invention, the first resilient spring piece forms a receiving chamber together with the movable contact assembly, and the position limiting assembly is received within the receiving chamber.

[0010] 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 in a first direction are adapted to contact or separate from the pair of fixed contact lead ends, respectively, where the first direction is an arrangement direction of the pair of fixed contact lead ends; the first elastic spring piece includes a first base and a spring arm, the first base is connected to the push rod assembly via a first anti-rotation structure, and at least one of the spring arms is provided on both ends of the first base in the first direction; The spring arms at both ends of the first base in the first direction are abutted against both ends of the movable contact in the first direction, respectively.

[0011] In some embodiments of the present invention, the spring arm includes an extension portion and an abutment portion, the extension portion connected to the first base, and the abutment portion connected to an end of the extension away from the first base and abutting an end of the movable contact in the first direction, wherein a width of the end of the extension connected to the first base is greater than a width of the end of the extension connected to the abutment portion.

[0012] In some embodiments according to the present invention, the width of the extension varies gradually decreasing in a direction from the first base portion to the abutment portion.

[0013] In some embodiments according to the invention, the first anti-rotation structure comprises: at least two first position limiting protrusions provided on one of the push rod assembly and the first base; and at least two first position limiting holes provided on the other of the push rod assembly and the first base, wherein the at least two first position limiting protrusions are inserted into the at least two first position limiting holes, respectively.

[0014] In some embodiments of the present invention, the position limiting assembly is a second resilient spring piece that is connected to one of the resilient assembly and the movable contact assembly via a second anti-rotation structure and is connected to the other of the resilient assembly and the movable contact assembly via a third anti-rotation structure.

[0015] In some embodiments according to the invention, the second anti-rotation structure comprises: at least two second position limiting protrusions provided on one of the elastic assembly and the second elastic spring piece; and at least two second position limiting holes provided on the other of the elastic assembly and the second elastic spring piece, wherein the at least two second position limiting protrusions are respectively inserted into the at least two second position limiting holes.

[0016] In some embodiments according to the present invention, the elastic assembly is connected to the push rod assembly via a first anti-rotation structure, the first anti-rotation structure includes at least two first position limiting protrusions and at least a first two position limiting holes, the at least two first position limiting protrusions are provided on the push rod assembly, the at least two first position limiting holes are provided on the elastic assembly, and the at least two first position limiting protrusions are inserted into the at least two position limiting holes, respectively; Each of the second position limiting protrusions is a convex ring, one of the convex rings surrounds one of the first position limiting holes, and the inner peripheral surface of the convex ring is flush with the hole wall of the first position limiting hole.

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

[0018] 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 in a first direction are adapted 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 second elastic spring piece includes a second base portion, a deformation portion and a connection portion; The second base is connected to one of the elastic assembly and the movable contact assembly via the second anti-rotation structure, and both sides of the second base in the first direction are provided with the deformation portion and the connection portion, the second base is connected to the connection portion via the deformation portion, and the connection portion is connected to the other of the elastic assembly and the movable contact assembly via the third anti-rotation structure.

[0019] In some embodiments of the present invention, along the first direction, the connection portion on one side of the second base forms a first coupling point with the movable contact assembly, and the connection portion on the other side of the second base forms a second coupling point with the movable contact assembly, there is a first distance between the first coupling point and the second coupling point, there is a second distance between the deformation portions on both sides of the second base, the first distance is smaller than the second distance, Here, the second distance is the maximum distance between the deformations on both sides of the second base.

[0020] In some embodiments according to the invention, the third anti-rotation structure comprises: at least two third position limiting protrusions provided on one of the second elastic spring piece and the movable contact assembly; The movable contact assembly further includes at least two third position limiting holes provided on the other of the second elastic spring piece and the movable contact assembly, and the at least two third position limiting protrusions are respectively inserted into the at least two third position limiting holes.

[0021] In some embodiments according to the invention, the relay further comprises a first magnetic conductive body; The first magnetic conductive body is provided on the side of the movable contact assembly facing the fixed contact lead-out end, and serves to resist electrical repulsive force.

[0022] In some embodiments of the present invention, the movable contact assembly further includes a second magnetic conductive body that is fixedly connected to the side (rear side) of the movable contact facing away from the fixed contact pull-out end, and the second magnetic conductive body is for forming a magnetic circuit with the first magnetic conductive body.

[0023] 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 in a first direction are adapted to contact or separate from the pair of fixed contact lead ends, respectively, wherein the first direction is an arrangement direction of the pair of fixed contact lead ends; the position limiting assembly is a second elastic spring piece, the second elastic spring piece including a second base portion, a deformation portion and a connection portion; The second base is provided on both sides in the first direction with the deformation portion and the connection portion, the second base is connected to the connection portion via the deformation portion, and the second base is connected to the elastic assembly, The connection portions on both sides of the second base are inserted between the second conductive body and the movable contact from both sides along the first direction of the second conductive body, and are fixedly connected to the movable contact and the second conductive body.

[0024] The elastic assembly is a first elastic spring piece and the position limiting assembly is a second elastic spring piece, the second elastic spring piece having a thickness smaller than a thickness of the first elastic spring piece.

[0025] In some embodiments according to the present invention, the resilient assembly is a compression spring, the compression spring being for providing a contact pressure.

[0026] In some embodiments according to the present invention, one end of the compression spring abuts against the position limiting assembly, and the other end of the compression spring abuts against the movable contact assembly or the push rod assembly.

[0027] In some embodiments according to the invention, the position limiting assembly is a second resilient spring strip; the second elastic spring piece includes a second base, a deformation portion and a connection portion, the second base is connected to the push rod assembly, the deformation portion and the connection portion are provided on both sides of the second base in a first direction, the second base is connected to the connection portion via the deformation portion, and the connection portion is connected to the movable contact assembly, the first direction is an arrangement direction of a pair of the fixed contact lead ends; The second elastic spring piece and the movable contact assembly are surrounded to form a chamber, the compression spring is accommodated in the chamber, and one end of the compression spring is abutted against the second base and the other end of the compression spring is abutted against the movable contact assembly.

[0028] 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 in a first direction are adapted to contact or separate from the pair of fixed contact lead ends, respectively, wherein the first direction is an arrangement direction of the pair of fixed contact lead ends; The elastic assembly and the push rod assembly are connected in a position-limiting manner along the first direction, and / or the position limiting assembly and the movable contact assembly are connected in a position-limiting manner along the first direction, and / or the position limiting assembly and the elastic assembly are connected in a position-limiting manner along the first direction.

[0029] In some embodiments according to the 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 by the resilient assembly.

[0030] One embodiment of the above invention has at least the following advantages or beneficial effects.

[0031] The relay according to an embodiment of the present invention includes a movable contact assembly, a push rod, a position limiting assembly and an elastic assembly, in which the elastic assembly can provide contact pressure and the position limiting assembly can limit the rotation of the movable contact assembly relative to the push rod assembly around the axis of the push rod assembly, thereby ensuring the consistency of the contact positions of the movable contact and the fixed contact, enhancing the stability of the contact resistance and improving the reliability of the relay. [Brief description of the drawings]

[0032] [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 movable assembly and a second magnetic conductive body according to an exemplary embodiment. [Diagram 5] FIG. 5 is an exploded schematic view of FIG. [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 first elastic spring piece according to an exemplary embodiment; [Figure 8] FIG. 13 is a schematic diagram of a second elastic spring piece according to an 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 diagram of a movable assembly and two second conductive bodies of a relay according to a second exemplary embodiment, where the movable assembly omits a contact bracket. [Figure 12] FIG. 13 is an exploded schematic diagram of a movable assembly and two second magnetic conductive bodies of a relay according to a second exemplary embodiment. [Figure 13]FIG. 13 is a schematic diagram of a movable assembly and two second magnetic conductive bodies according to a third exemplary embodiment, where the movable assembly omits a contact bracket; [Figure 14] FIG. 14 is a cross-sectional view of FIG. [Figure 15] FIG. 13 is an exploded schematic view of a movable assembly and two second magnetic conductive bodies according to a fourth exemplary embodiment; [Figure 16] FIG. 13 is an exploded schematic view of a movable assembly and two second magnetic conductive bodies according to a fifth exemplary embodiment; [Figure 17] FIG. 13 is a schematic diagram of a movable assembly and two second magnetic conductive bodies of a relay according to a sixth exemplary embodiment, where the movable assembly omits a contact bracket. [Figure 18] FIG. 5 is a schematic diagram in which the contact bracket is omitted from FIG. 4, and in this case, the movable contact has already been brought into contact with the fixed contact lead-out end. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0033] Next, exemplary embodiments will be described more generally 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.

[0034] As shown in FIGS. 1 to 3, the relay according to the 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.

[0035] 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, e.g., a process, method, system, product, or device comprising a series of steps or units is not limited to the recited steps or units, but may optionally include steps or units not recited, or may optionally include other steps or assemblies inherent to the process, method, product, or device.

[0036] The contact container 1000 is a fixed part, and is a device that contains a contact set and is mainly composed of a case and has a chamber. In addition, the contact container 1000 may be configured such that a plurality of parts are connected by a predetermined assembly method.

[0037] 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, where the insulating cover 1100 is arranged to cover one side of the yoke plate 1200, and the insulating cover 1100 and the yoke plate 1200 are enclosed together to form the contact chamber 1001.

[0038] 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.

[0039] The contact vessel 1000 further includes a pair of first through holes 1002, which communicate with 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 provided in the ceramic cover 1110.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] The movable contactor assembly 3100 includes a movable contactor 3110, which may include a movable contactor body and movable contacts provided at both ends of the movable contactor body. The movable contacts may be connected to the movable contactor body as separate parts. Of course, the movable contacts may be integrally molded with the movable contactor body.

[0045] The number of movable contactors 3110 included in the movable contactor assembly 3100 is at least one, for example, one, two, three, etc. In an 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 for contacting or separating from a fixed contact of one of the fixed contact lead 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 lead end 2000.

[0046] The movable contactor assembly 3100 may further include a second magnetic conductive body 6200, which is fixedly connected to the side (rear 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.

[0047] 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 ends 2000, respectively.

[0048] 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.

[0049] As shown in Fig. 4 and Fig. 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, a contact bracket 3220, and an elastic assembly 3230. 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 assembly 3100 is mounted in the contact bracket 3220 via the 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.

[0050] 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 respectively engaged into the two locking holes 3223 of the contact bracket 3220, thereby realizing the fixing of the base 3211 and the contact bracket 3220. The elastic assembly 3230 is provided between the movable contact assembly 3100 and the base 3211, and is configured to apply an elastic force to the movable contact assembly 3100 to move toward the upper wall 3221 so as to provide a contact pressure. In an embodiment of the present invention, one end of the elastic assembly 3230 is abutted against the movable contact assembly 3100, and the other end of the elastic assembly 3230 is attached to the base 3211.

[0051] Of course, in other embodiments, the contact bracket 3220 may have other structures, not all of which are listed here.

[0052] 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.

[0053] 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.

[0054] 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, together with the yoke plate 1200, forms a chamber for housing the fixed iron core 4300 and the movable iron core 4400 of the magnetic circuit unit 4000.

[0055] 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.

[0056] 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 fitted onto the rod portion 3212.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] In this 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 .

[0073] 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.

[0074] 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.

[0075] 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.

[0076] As shown in Figures 5, 6 and 18, the relay further includes a position limiting assembly 300 connected to the movable contact assembly 3100 and the push rod assembly 3200 and configured 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, and the position limiting assembly 300 can deform to accommodate overtravel.

[0077] It is understood that the connection between the position limiter assembly 300 and the push rod assembly 3200 may be a direct connection or an indirect connection. When the position limiter assembly 300 and the push rod assembly 3200 are indirectly connected, the position limiter assembly 300 may be connected to the push rod assembly 3200 via the elastic assembly 3230. That is, the elastic assembly 3230 and the push rod assembly 3200 are directly connected, and the position limiter assembly 300 and the elastic assembly 3230 are directly connected.

[0078] The relay according to the embodiment of the present invention includes a movable contact assembly 3100, a push rod 3210, a position limiting assembly 300, and an elastic assembly 3230. The elastic assembly 3230 can provide a contact pressure, and the position limiting assembly 300 can limit the rotation of the movable contact assembly 3100 relative to the push rod 3210. In this way, the consistency of the contact positions of the movable contact and the fixed contact is ensured, the stability of the contact resistance is enhanced, and the reliability of the relay is improved.

[0079] In addition, in the embodiment of the present invention, the position limiting assembly 300 can limit the rotation of the movable contact assembly 3100 about an axis perpendicular to the plane on which the movable contact assembly 3100 is located. In other words, the position limiting assembly 300 can limit the rotation of the movable contact assembly 3100 relative to the push rod assembly 3200 about the axis of the push rod assembly 3200.

[0080] In addition, when there are multiple movable contact assemblies 3110, the anti-rotation function of the position limiting assembly 300 allows only one contact bracket 3220 to be used, thereby avoiding an increase in the space occupied by providing one contact bracket 3220 for each movable contact assembly 3110.

[0081] 6 and 7, the elastic assembly 3230 is a first elastic spring piece 100. As an example, the first elastic spring piece 100 is a piece-like structure made of a metal material and is formed by bending.

[0082] The first elastic spring piece 100 is attached to the base 3211 of the push rod 3210 by the first anti-rotation structure 200 and abuts against the surface of the movable contact 3110 of the movable contact assembly 3100 facing the push rod 3210 .

[0083] The first elastic spring piece 100 is provided on the second side of the movable contact 3110, and includes a first base 110 and a spring arm 120. The first base 110 is attached to the push rod 3210 by a first anti-rotation structure 200, and at least one spring arm 120 is provided on each of both ends of the first base 110 along the first direction D1, and the spring arms 120 at both ends of the first base 110 in the first direction D1 are abutted against both ends of the movable contact assembly 3100 in the first direction D1, respectively.

[0084] In the embodiment of the present invention, the spring arms 120 at both ends of the first base 110 in the first direction D1 are abutted against both ends of the movable contact 3110, respectively.

[0085] Since the spring arms 120 at both ends of the first elastic spring piece 100 are supported on both ends of the movable contact 3110, the movable contact 3110 and the second magnetic conductive body 6200 can be stably attached to the push rod 3210, and rattling of the movable contact 3110 and the second magnetic conductive body 6200 is avoided. It is understood that this further avoids the problem of uneven contact pressure due to rattling of the movable contact 3110 and the problem of the short-circuit resistance capability being affected by rattling of the second magnetic conductive body 6200.

[0086] The first elastic spring piece 100 and the movable contact assembly 3100 together form a receiving chamber 500, and the position limiting assembly 300 is received in the receiving chamber 500. By providing the position limiting assembly 300 in the receiving chamber 500, the structure of the movable assembly 3000 can be made more compact, which is advantageous for miniaturizing the relay.

[0087] As shown in FIG. 5, both ends of the first base 110 in the first direction D1 are provided with spring arms 120 arranged side by side along at least two third directions D3, and two corresponding spring arms 120 in the first direction D1 of the first elastic spring piece 100 are abutted against both ends of one movable contactor 3110 in the first direction D1, respectively.

[0088] In an embodiment of the present invention, spring arms 120 are provided at both ends of the first base 110 in the first direction D1, and are arranged side by side along two third directions D3, and the two spring arms 120 at one end of the first base 110 in the first direction D1 each abut against one end of the two movable contactors 3110 arranged side by side, and the two spring arms 120 at the other end of the first base 110 in the first direction D1 each abut against the other ends of the two movable contactors 3110 arranged side by side.

[0089] From this, it can be seen that in an embodiment of the present invention, each movable contactor 3110 corresponds to a pair of spring arms 120, and when the contact gaps between the multiple movable contactors 3110 and the fixed contact pull-out ends do not match, the multiple movable contactors 3110 do not interfere with each other.

[0090] 7, each spring arm 120 includes an extension 121 and an abutment 122, the extension 121 is connected to the first base 110, and the abutment 122 is connected to one end of the extension 121 away from the first base 110 and abuts against an end of the movable contact 3110 in the first direction D1, where the width of the end where the extension 121 and the first base 110 are connected is larger than the width of the end where the extension 121 and the abutment 122 are connected. Furthermore, the width of the extension 121 gradually decreases from the first base 110 toward the abutment 122.

[0091] In the embodiment of the present invention, the first elastic spring piece 100 includes a first base 110 and a spring arm 120, and the width of the extension 121 of the spring arm 120 gradually decreases and changes from the first base 110 toward the abutment 122, that is, the width of the extension 121 gradually narrows. This can reduce the structural strength of the spring arm 120 to make the spring arm 120 softer. In the initial stage of overtravel, immediately after the movable contact 3110 contacts the fixed contact pull-out end 2000, the spring arm 120 does not provide excessive elastic force to avoid mismatch between the attraction force and the reaction force. In addition, since the width of the extension 121 gradually narrows and changes, the weight of the first elastic spring piece 100 can be slightly reduced. In addition, since the width of the extension 121 gradually decreases and changes, the spring arm 120 can reserve sufficient space in advance for installing other structures in the third direction D3.

[0092] Furthermore, the width of the first base 110 is greater than the width of the extension 121. The first base 110 is connected to the push rod 3210, and since the width of the first base 110 is greater and the width of the extension 121 is also greater, the structural strength of the first base 110 of the first elastic spring piece 100 can be ensured, and the first elastic spring piece 100 can be firmly connected to the push rod 3210.

[0093] In addition, the base of the extension 121 is wider, which has better mechanical strength and is advantageous for improving the fatigue resistance of the first elastic spring piece 100. The extension 121 is provided so that the stiffness coefficient of the first elastic spring piece 100 changes gradually and narrows, so as to change nonlinearly, the elastic reaction force in the initial stage is reduced, and the inconsistency of the attraction reaction force immediately after the start of overtravel is avoided. And as the first elastic spring piece 100 is gradually compressed, its stiffness coefficient becomes larger and larger, which ensures that sufficient contact pressure can be provided.

[0094] 5 to 7, the first anti-rotation structure 200 includes at least two first position limiting protrusions 3214 and at least two first position limiting holes 111. The first position limiting protrusions 3214 are provided on one of the first base 110 and the push rod assembly 3200, and the first position limiting holes 111 are provided on the other of the first base 110 and the push rod assembly 3200. The at least two first position limiting protrusions 3214 are respectively inserted into the at least two first position limiting holes 111 to achieve an anti-rotation effect.

[0095] In an embodiment of the present invention, at least two first position limiting protrusions 3214 are protruded from the surface of the push rod 3210 facing the movable contact assembly 3100, and at least two first position limiting holes 111 are provided in the first base 110.

[0096] In the embodiment of the present invention, the first anti-rotation structure 200 includes two first position limiting protrusions 3214 and two first position limiting holes 111. The two first position limiting protrusions 3214 are protruded from a surface of the base 3211 facing the movable contact assembly 3100, and the two first position limiting protrusions 3214 are arranged side by side along the third direction D3 and are inserted into the two first position limiting holes 111, respectively.

[0097] In addition, since the first anti-rotation structure 200 of the embodiment of the present invention includes at least two first position limiting protrusions 3214 and first position limiting holes 111 that fit together, the shape of the first position limiting holes 111 may be circular.

[0098] Of course, in other embodiments, the first anti-rotation structure 200 may include one first position limiting protrusion 3214 and one first position limiting hole 111, and the shape of the first position limiting hole 111 may be a non-circular shape such as a rectangle, an ellipse, a triangle, etc. The first position limiting protrusion 3214 fits the shape of the first position limiting hole 111 and is inserted into the first position limiting hole 111 to prevent relative rotation between the push rod 3210 and the first elastic spring piece 100.

[0099] It will be understood that the first anti-rotation structure 200 is intended to restrict the first resilient spring piece 100 from rotating relative to the push rod assembly 3200 about the axis of the push rod assembly 3200.

[0100] It is understood that in other embodiments, the first anti-rotation structure 200 may include a crimped structure, a welded structure, an adhesive structure, etc. When the first anti-rotation structure 200 is a crimped structure, the first base 110 and the push rod assembly 3200 are crimped, when the first anti-rotation structure 200 is a welded structure, the first base 110 and the push rod assembly 3200 are welded, and when the first anti-rotation structure 200 is an adhesive structure, the first base 110 and the push rod assembly 3200 are adhesively bonded.

[0101] In other embodiments, the first anti-rotation structure 200 may include a fastener that fastens the first resilient spring piece 100 and the push rod assembly 3200 together.

[0102] 5, 6 and 8, the position limiting assembly 300 is a second elastic spring piece 300a, which is a piece-like structure made of a metal material and may be formed by bending. The second elastic spring piece 300a is connected to one of the elastic assembly 3230 and the movable contact assembly 3100 via a second anti-rotation structure 400, and is connected to the other of the elastic assembly 3230 and the movable contact assembly 3100 via a third anti-rotation structure 700.

[0103] In an embodiment of the present invention, the second elastic spring piece 300a is connected to the first base 110 via a second anti-rotation structure 400 and is connected to the movable contact assembly 3100 via a third anti-rotation structure 700.

[0104] 8 to 10, the second rotation prevention structure 400 includes at least two second position limiting protrusions 410 and at least two second position limiting holes 311. The second position limiting protrusions 410 are provided on one of the first elastic spring piece 100 and the second elastic spring piece 300a, and the second position limiting hole 311 is provided on the other of the first elastic spring piece 100 and the second elastic spring piece 300a.

[0105] In the embodiment of the present invention, each second position limiting protrusion 410 is a convex ring 112. At least two convex rings 112 are provided on the surface of the first base 110 facing the movable contactor assembly 3100, and one convex ring 112 surrounds one first position limiting hole 111, and the inner peripheral surface 112b of the convex ring 112 is flush with the hole wall of the first position limiting hole 111, and at least two second position limiting holes 311 are provided in the second elastic spring piece 300a. Here, the at least two convex rings 112 are inserted into the at least two second position limiting holes 311, respectively.

[0106] In an embodiment of the present invention, the second anti-rotation structure 400 includes two convex rings 112 and two second position limiting holes 311 .

[0107] In addition, since the second anti-rotation structure 400 in the embodiment of the present invention includes at least two convex rings 112 and the second position limiting hole 311 that fit together, the shape of the second position limiting hole 311 may be circular.

[0108] Of course, in other embodiments, the second anti-rotation structure 400 may include one convex ring 112 and one second position limiting hole 311, and the shape of the second position limiting hole 311 may be a non-circular shape such as a rectangle, an ellipse, a triangle, etc. The convex ring 112 is inserted into the second position limiting hole 311 to prevent relative rotation between the second elastic spring piece 300a and the first elastic spring piece 100.

[0109] It will be understood that the second anti-rotation structure 400 is for restricting the second resilient spring piece 300 a from rotating relative to the first resilient spring piece 100 about the axis of the push rod assembly 3200 .

[0110] In one embodiment, the convex ring 112 is formed by bending the edge of the first position limiting hole 111 of the first base 110 toward the direction approaching the movable contact assembly 3100. In the embodiment of the present invention, the convex ring 112 is provided on the edge of the first position limiting hole 111, so that when the first base 110 and the push rod 3210 are assembled, the friction force between the first position limiting protrusion 3214 and the first base 110 can be reduced and scraps can be prevented. At the same time, the convex ring 112 is fitted into the second position limiting hole 311 of the second elastic spring piece 300a, and the effect of preventing the second elastic spring piece 300a from rotating relative to the first elastic spring piece 100 can be achieved. In addition, the convex ring 112 formed by bending can increase the contact area between the first position limiting protrusion 3214 and the first base 110, thereby reducing wear between the first position limiting protrusion 3214 and the first base 110 during movement.

[0111] 10, the convex ring 112 has an upper surface 112a facing away from the first 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 when the convex ring 112 is molded can be removed, and scrap generated between the first position limiting projection 3214 and the inner peripheral surface 112b of the convex ring 112 can be further prevented.

[0112] 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 first elastic spring piece 100 and the second elastic spring piece 300a are crimped, when the second anti-rotation structure 400 is a welded structure, the first elastic spring piece 100 and the second elastic spring piece 300a are welded, and when the second anti-rotation structure 400 is an adhesive structure, the first elastic spring piece 100 and the second elastic spring piece 300a are adhesively bonded.

[0113] In another embodiment, the second anti-rotation structure 400 may include a fastener that fastens and connects the first resilient spring piece 100 and the second resilient spring piece 300a.

[0114] 6 and 8, the second elastic spring piece 300a is provided on the second side of the movable contact assembly 3100. The second elastic spring piece 300a includes a second base portion 310, a deformation portion 320, and a connection portion 330. The second base portion 310 is attached to one of the first elastic spring piece 100 and the movable contact assembly 3100 via a second anti-rotation structure 400. The deformation portion 320 and the connection portion 330 are provided on both sides of the second base portion 310 along the first direction D1, and the second base portion 310 is connected to the connection portion 330 via the deformation portion 320, and the connection portion 330 is connected to the other of the first elastic spring piece 100 and the movable contact assembly 3100 via a third anti-rotation structure 700.

[0115] In the embodiment of the present invention, the connection portion 330 of the second resilient spring piece 300a is connected to the movable contact assembly 3100 through the third anti-rotation structure 700, and the second base portion 310 is attached to the first base portion 110 of the first resilient spring piece 100 through the second anti-rotation structure 400. In this way, the second resilient spring piece 300a can position the movable contact assembly 3100 in the second direction D2 and restrict the movable contact assembly 3100 in the first direction D1 and the third direction D3, and the second resilient spring piece 300a realizes the restriction on the movable contact assembly 3100, prevents the movable contact assembly 3100 from rotating relative to the push rod 3210, and further prevents the movable contact and the fixed contact from being misaligned, which affects the reliability of the relay. In addition, the movable contactor assembly 3100 is restricted by the second elastic spring piece 300a, and ripple noise (ripple noise) generated by the movable contactor assembly 3100 coming into contact with the contactor bracket when the movable contactor assembly 3100 is energized is suppressed. We avoided noise.

[0116] 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 fall on the contact surface of the contact, and further reducing the quality risk of increased contact resistance and failure to conduct electricity.

[0117] Here, in the over-travel, the push rod 3210 continues to move toward the movable contact assembly 3100, and at this time, the deformation portion 320 is compressed and deformed, and does not affect the over-travel.

[0118] In addition, since the first elastic spring piece 100 is for providing contact pressure and the second elastic spring piece 300a does not need to provide contact pressure, the thickness of the second elastic spring piece 300a may be smaller than the thickness of the first elastic spring piece 100, thereby reducing the stress at the bending points of the second elastic spring piece 300a and avoiding fatigue failure of the second elastic spring piece 300a.

[0119] In the embodiment of the present invention, two deformation parts 320 and two connection parts 330 are provided on both sides of the second base 310 along the first direction D1. One side of the second base 310 is connected to the two connection parts 330 via the two deformation parts 320. The two deformation parts 320 located on one side of the second base 310 are arranged side by side along the third direction D3. The two connection parts 330 located on one side of the second base 310 are fixedly connected to the two movable contact assemblies 3100, respectively.

[0120] From this, it can be seen that in this embodiment of the present invention, each movable contactor 3110 corresponds to a pair of connecting portions 330, and thus, when the contact gaps between the multiple movable contactors 3110 and the fixed contact pull-out ends do not coincide, the multiple movable contactors 3110 do not interfere with each other.

[0121] As shown in Fig. 6, along the first direction D1, the connection portion 330 on one side of the second base 310 forms a first coupling point 700a with the movable contact assembly 3100, and the connection portion 330 on the other side of the second base 310 forms a second coupling point 700b with the movable contact assembly 3100. There is a first distance L1 between the first coupling point 700a and the second coupling point 700b, and there is a second distance L2 between the deformation portions 320 on both sides of the second base 310, and the first distance L1 is smaller than the second distance L2. Here, the first distance L1 is the distance between the center line of the first coupling point 700a and the center line of the second coupling point 700b, and the second distance L2 is the maximum distance between the deformation portions 320 on both sides of the second base 310.

[0122] In the embodiment of the present invention, since the first distance L1 is smaller than the second distance L2, in the overtravel, the second elastic spring piece 300a is compressed by the push rod 3210 and the movable contactor assembly 3100, and the deformation parts 320 on both sides of the second base 310 can be deformed along the direction away from each other (the deformation parts 320 on both sides spread outward), so that the second elastic spring piece 300a 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 320 on both sides of the second base 310 are equivalent to being bent along the direction toward each other as a whole, thus reducing the overall volume of the second elastic spring piece 300a and reducing the space occupation rate.

[0123] 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.

[0124] 6 and 8, the third anti-rotation structure 700 includes at least two third position limiting protrusions 710 and at least two third position limiting holes 720. The at least two third position limiting protrusions 710 are provided on one of the second elastic spring piece 300a and the movable contact assembly 3100, and the at least two third position limiting holes 720 are provided on the other of the second elastic spring piece 300a and the movable contact assembly 3100. The at least two third position limiting protrusions 710 are inserted into the at least two third position limiting holes 720, respectively.

[0125] In the embodiment of the present invention, the number of the third position limiting holes 720 is four, and the number of the third position limiting protrusions 710 is four. The four third position limiting holes 720 are provided in the four connection parts 330, respectively, the four third position limiting protrusions 710 are provided in the two second magnetic conductive bodies 6200, and each second magnetic conductive body 6200 is provided with two third position limiting protrusions 710.

[0126] It is understood that in other embodiments, the third anti-rotation structure 700 may include a crimping structure, a welding structure, an adhesive structure, etc. When the third anti-rotation structure 700 is a crimping structure, the second base 310 is crimped to the first resilient spring piece 100 or the movable contactor assembly 3100, when the third anti-rotation structure 700 is a welding structure, the second base 310 is welded to the first resilient spring piece 100 or the movable contactor assembly 3100, and when the third anti-rotation structure 700 is an adhesive structure, the second base 310 is adhesively attached to the first resilient spring piece 100 or the movable contactor assembly 3100.

[0127] In other embodiments, the third anti-rotation structure 700 may include a fastener fasteningly connecting one of the first resilient spring piece 100 and the movable contact assembly 3100 to the second resilient spring piece 300a.

[0128] In one embodiment, the elastic assembly 3230 and the push rod assembly 3200 are connected in a position-limiting manner along the first direction D1, and / or the position limiting assembly 300 and the movable contact assembly 3100 are connected in a position-limiting manner along the first direction D1, and / or the position limiting assembly 300 and the elastic assembly 3230 are connected in a position-limiting manner along the first direction D1. In this manner, the range of oscillation of the movable contact assembly 3100 relative to the push rod assembly 3200 in the first direction D1 can be reduced, and the shock resistance performance of the entire relay can be improved.

[0129] Preferably, the elastic assembly 3230 and the push rod assembly 3200 are connected in a position-limiting manner along the first direction D1, the position-limiting assembly 300 and the movable contactor assembly 3100 are connected in a position-limiting manner along the first direction D1, and the position-limiting assembly 300 and the elastic assembly 3230 are connected in a position-limiting manner along the first direction D1. In this way, 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.

[0130] In another embodiment, the third position limiting hole 720 is elliptical in shape, and the major axis of the ellipse is parallel to the first direction D1. By designing the third position limiting hole 720 as an ellipse, the third position limiting protrusion 710 is limited to the outer edge of the third position limiting hole 720 before the movable contact and the fixed contact come into contact, so that the movable contactor assembly 3100 does not swing. After the movable contact and the fixed contact come into contact, the second elastic spring piece 300a is compressed, and the connection parts and deformation parts on both sides of the second base 310 tend to move to both sides. At this time, the elliptical third position limiting hole 720 provides a space for the connection part 330 to move, and releases the stress generated inside the second elastic spring piece 300a after it is subjected to pressure, and can prevent the stress inside the second elastic spring piece 300a from being concentrated too much and affecting the lifespan.

[0131] It should be noted that the distance that the connecting portion 330 moves within the ellipse is small, so that it does not affect the relative positions of the movable contact and the fixed contact.

[0132] It is understood that the first anti-rotation structure 200, the second anti-rotation structure 400 and the third anti-rotation structure 700 may be the same or different.

[0133] 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.

[0134] In the second embodiment, the second elastic spring piece 300a includes a second base 310, a deformation portion 320, and a connection portion 330. The second base 310 is connected to the movable contact assembly 3100 via a second anti-rotation structure 400. The second base 310 is provided with a deformation portion 320 and a connection portion 330 on both sides in the first direction D1, and the second base 310 is connected to the connection portion 330 via the deformation portion 320, and the connection portion 330 is connected to the first base 110 of the first elastic spring piece 100 via a third anti-rotation structure 700.

[0135] In the embodiment of the present invention, the second base 310 is connected to the second magnetic conductive body 6200 via the second anti-rotation structure 400. The second position limiting hole 311 of the second anti-rotation structure 400 is provided in the second base 310, and the second position limiting protrusion 410 is provided in the second magnetic conductive body 6200. The third position limiting hole 720 of the third anti-rotation structure 700 is provided in the connecting portion 330, and the third position limiting protrusion 710 is provided in the first base 110.

[0136] As shown in Figures 13 and 14, the relay of the third embodiment has a structure 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 this embodiment, differences from the relay of the first embodiment will be mainly described.

[0137] In the third embodiment, the second base 310 of the second elastic spring piece 300a is connected to the first base 110 of the first elastic spring piece 100 via a second anti-rotation structure 400. The connection parts 330 on both sides of the second base 310 are inserted between the second magnetic conductive body 6200 and the movable contact 3110 from both sides along the first direction D1 of the second magnetic conductive body 6200, respectively, and are fixedly connected to the movable contact 3110 and the second magnetic conductive body 6200.

[0138] As shown in Fig. 15, the relay of the fourth 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 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 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.

[0139] In the fourth embodiment, the movable contact assembly 3100 includes one movable contact 3110 and one second magnetic body 6200. Each of the first base 110 has one spring arm 120 on each side, and each of the second base 310 has one deformation portion 320 and one connection portion 330 on each side.

[0140] As shown in FIG. 16, the relay of the fifth 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 fifth 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.

[0141] In the fifth embodiment, the movable contactor assembly 3100 includes three movable contactors 3110 and three second magnetic conductive bodies 6200 arranged side by side. Three spring arms 120 are provided on both sides of the first base 110, and three deformation portions 320 and three connection portions 330 are provided on both sides of the second base 310. The three spring arms 120 on one side of the first base 110 are abutted against one ends of the three movable contactors 3110, respectively, and the three spring arms 120 on the other side of the first base 110 are abutted against the other ends of the three movable contactors 3110, respectively. The six connection portions 330 on both sides of the second base 310 are divided into three pairs, and two connection portions 330 of each pair are provided opposite to each other in the first direction D1, and the three pairs of connection portions 330 are connected to the three second magnetic conductive bodies 6200, respectively.

[0142] As shown in FIG. 17, the relay of the sixth 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 sixth 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 this embodiment, differences from the relay of the first embodiment will be mainly described.

[0143] In the sixth embodiment, the elastic assembly 3230 is a compression spring 600, which is provided in a chamber 800 formed by surrounding the second elastic spring piece 300a and the second magnetic conductive body 6200, and one end of the compression spring 600 abuts against the second magnetic conductive body 6200, and the other end of the compression spring 600 abuts against the second base portion 310 of the second elastic spring piece 300a. The compression spring 600 is for providing a contact pressure.

[0144] Of course, in other embodiments, the second base portion 310 of the second resilient spring piece 300a may be connected to the second magnetic conductive body 6200 of the movable contact assembly 3100, and the connection portion 330 of the second resilient spring piece 300a may be connected to the push rod assembly 3200. The compression spring 600 is accommodated in a chamber formed by surrounding the second resilient spring piece 300a and the push rod assembly 3200. One end of the compression spring 600 abuts against the push rod assembly 3200, and the other end of the compression spring 600 abuts against the second base portion 310 of the second resilient spring piece 300a.

[0145] In the relays in the first to sixth embodiments described above, the short-circuit resistant structure may 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 3220.

[0146] In addition, the position limiting assembly 300 is not limited to the second elastic spring piece 300a adopting the contact piece structure, for example, the position limiting assembly 300 may include a telescopic rod, one end of which is connected to the movable contactor assembly 3100, and the other end of which is connected to the first elastic spring piece 100 or the push rod 3210, so that the telescopic rod can realize telescopic movement along the second direction D2. In other embodiments, the position limiting assembly 300 may include at least two compression springs, one end of which is connected to the first elastic spring piece 100 in a position-limiting manner or fixedly, and the other end of which is connected to the movable contactor assembly 3100 in a position-limiting manner or fixedly.

[0147] In addition, the various examples / embodiments provided by the present invention can be combined with each other without causing any contradiction, and the description thereof will be omitted here.

[0148] 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.

[0149] 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.

[0150] In the description herein, the term "one embodiment," "some embodiments," "particular embodiment," etc. means 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 this 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 combined in any suitable manner in any one or more embodiments or examples.

[0151] 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. [Explanation of symbols]

[0152] 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 3200, Pushrod Assembly 3210, Push rod 3211, base 3212, rod part 3213, locking piece 3214, first position limiting 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, first elastic spring piece 110, first base 111, first position limiting hole 112, convex ring 112a, top side 112b, inner surface 113, Chamfering 120, spring arm 121, Extension 122, contact part 200, first anti-rotation structure 300, position limit assembly 300a, second elastic spring piece 310, second base 311, second position limiting hole 320, transformation part 330, connection part 400, second anti-rotation structure 410, second position limiting protrusion 500, containment chamber 600, compression spring 700, the third anti-rotation structure 700a, first connection point 700b, second connection point 710, third position limiting protrusion 720, the third position limiting hole 800, chamber

Claims

1. a movable contact assembly including a movable contact; a push rod assembly for pushing and moving the movable contact assembly so as to bring the movable contact into contact with or separate from the fixed contact lead-out end; a position limiting assembly connected to the movable contact assembly and the push rod assembly for limiting rotation of the movable contact assembly relative to the push rod assembly about an axis of the push rod assembly; a resilient assembly for providing contact pressure; A relay comprising:

2. 10. The relay of claim 1, wherein the position limiting assembly is deformable to accommodate overtravel.

3. the resilient assembly being a first resilient spring piece; The first elastic spring piece is connected to one of the push rod assembly and the movable contact assembly, and abuts against the other of the push rod assembly and the movable contact assembly.

2. A relay as claimed in claim 1 , characterized in that

4. The first elastic spring piece forms a receiving chamber together with the movable contact assembly, and the position limiting assembly is received in the receiving chamber.

4. A relay as claimed in claim 3, characterized in that

5. The movable contact further includes a pair of fixed contact lead ends, and both ends of the movable contact in a first direction are adapted 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 first elastic spring piece includes a first base and a spring arm, the first base is connected to the push rod assembly via a first anti-rotation structure, and at least one of the spring arms is provided on both ends of the first base in the first direction; The spring arms at both ends of the first base in the first direction are abutted against both ends of the movable contact in the first direction, respectively.

4. A relay as claimed in claim 3, characterized in that

6. The spring arm includes an extension connected to the first base and an abutment connected to one end of the extension away from the first base and abutting against an end of the movable contact in the first direction, wherein a width of the one end of the extension connected to the first base is greater than a width of the one end of the extension connected to the abutment.

6. A relay as claimed in claim 5, characterized in that

7. The width of the extension portion gradually decreases from the first base portion toward the abutment portion.

7. A relay as claimed in claim 6, characterized in that

8. The first rotation prevention structure includes: at least two first position limiting protrusions provided on one of the push rod assembly and the first base; and at least two first position limiting holes provided on the other of the push rod assembly and the first base, wherein the at least two first position limiting protrusions are inserted into the at least two first position limiting holes, respectively.

6. A relay as claimed in claim 5, characterized in that

9. The position limiting assembly is a second elastic spring piece, the second elastic spring piece being connected to one of the elastic assembly and the movable contact assembly via a second anti-rotation structure, and being connected to the other of the elastic assembly and the movable contact assembly via a third anti-rotation structure.

2. A relay as claimed in claim 1 , characterized in that

10. The second rotation prevention structure includes: at least two second position limiting protrusions provided on one of the elastic assembly and the second elastic spring piece; and at least two second position limiting holes provided on the other of the elastic assembly and the second elastic spring piece, wherein the at least two second position limiting protrusions are inserted into the at least two second position limiting holes, respectively.

10. A relay as claimed in claim 9, characterized in that

11. The elastic assembly is connected to the push rod assembly via a first anti-rotation structure, the first anti-rotation structure includes at least two first position limiting protrusions and at least two first position limiting holes, the at least two first position limiting protrusions are provided on the push rod assembly, the at least two first position limiting holes are provided on the elastic assembly, and the at least two first position limiting protrusions are inserted into the at least two first position limiting holes respectively; Each of the second position limiting protrusions is a convex ring, one of the convex rings surrounds one of the first position limiting holes, and an inner peripheral surface of the convex ring is flush with a hole wall of the first position limiting hole.

11. A relay as claimed in claim 10, characterized in that

12. The convex ring is formed by bending an edge of the first position limiting hole of the elastic assembly in a direction approaching the movable contact assembly.

12. A relay as claimed in claim 11, characterised in that

13. The movable contact further includes a pair of fixed contact lead ends, and both ends of the movable contact in a first direction are adapted 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 second elastic spring piece includes a second base portion, a deformation portion and a connection portion; The second base is connected to one of the elastic assembly and the movable contact assembly via the second anti-rotation structure, and the deformation portion and the connection portion are provided on both sides of the second base in the first direction, the second base is connected to the connection portion via the deformation portion, and the connection portion is connected to the other of the elastic assembly and the movable contact assembly via the third anti-rotation structure.

10. A relay as claimed in claim 9, characterized in that

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

14. A relay as claimed in claim 13, characterized in that

15. The third rotation prevention structure includes: at least two third position limiting protrusions provided on one of the second elastic spring piece and the movable contact assembly; and at least two third position limiting holes provided on the other of the second elastic spring piece and the movable contact assembly, and the at least two third position limiting protrusions are inserted into the at least two third position limiting holes, respectively.

10. A relay as claimed in claim 9, characterized in that

16. The relay further includes a first magnetic conductive body; The first magnetic body is provided on one side of the movable contact assembly toward the fixed contact lead-out end, and serves to resist an electrical repulsive force.

2. A relay as claimed in claim 1 , characterized in that

17. The movable contact assembly further includes a second magnetic conductive body, the second magnetic conductive body being fixedly connected to one side of the movable contact facing away from the fixed contact lead end, the second magnetic conductive body being for forming a magnetic circuit with the first magnetic conductive body.

17. A relay as claimed in claim 16, characterized in that

18. The movable contact further includes a pair of fixed contact lead ends, and both ends of the movable contact in a first direction are adapted 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 position limiting assembly is a second elastic spring piece, the second elastic spring piece including a second base portion, a deformation portion and a connection portion; The second base is provided on both sides along the first direction with the deformation portion and the connection portion, the second base is connected to the connection portion via the deformation portion, and the second base is connected to the elastic assembly, The connection portions on both sides of the second base are inserted between the second magnetic body and the movable contact from both sides of the second magnetic body along the first direction, and are fixedly connected to the movable contact and the second magnetic body.

18. A relay as claimed in claim 17, characterized in that

19. The elastic assembly is a first elastic spring piece, and the position limiting assembly is a second elastic spring piece, and the thickness of the second elastic spring piece is smaller than the thickness of the first elastic spring piece.

2. A relay as claimed in claim 1 , characterized in that

20. The resilient assembly is a compression spring for providing contact pressure.

2. A relay as claimed in claim 1 , characterized in that

21. One end of the compression spring is in contact with the position limiting assembly, and the other end of the compression spring is in contact with the movable contact assembly or the push rod assembly.

21. A relay as claimed in claim 20.

22. the position limiting assembly being a second resilient spring piece; the second elastic spring piece includes a second base, a deformation portion and a connection portion, the second base is connected to the push rod assembly, the deformation portion and the connection portion are provided on both sides of the second base in a first direction, the second base is connected to the connection portion via the deformation portion, and the connection portion is connected to the movable contact assembly, the first direction is an arrangement direction of a pair of the fixed contact lead ends, The second elastic spring piece and the movable contact assembly are surrounded to form a chamber, the compression spring is accommodated in the chamber, and one end of the compression spring is abutted against the second base and the other end of the compression spring is abutted against the movable contact assembly.

22. A relay as claimed in claim 21, characterised in that

23. The movable contact further includes a pair of fixed contact lead ends, and both ends of the movable contact in a first direction are adapted 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 and the push rod assembly are connected in a position-limiting manner along the first direction, and / or the position-limiting assembly and the movable contact assembly are connected in a position-limiting manner along the first direction, and / or the position-limiting assembly and the elastic assembly are connected in a position-limiting manner along the first direction.

2. A relay as claimed in claim 1 , characterized in that

24. 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 by the resilient assembly.

2. A relay as claimed in claim 1 , characterized in that

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