Relay and device

Abstract

Provided in the present disclosure are a relay and a device. The relay comprises four contact lead-out components, which are all electrically connected to an external circuit so as to form three conductive loops with the external circuit, such that the number of contact lead-out components is reduced on the basis of ensuring that the conductive loops remain unchanged, thereby reducing the volume of the relay and facilitating the miniaturization of the relay. Moreover, the complexity of control logic and material costs of a device are reduced. In addition, the four contact lead-out components are arranged in one relay, making the structure of the relay more compact and the assembly efficiency higher. Furthermore, the wiring between the relay and the external circuit is simpler, and less copper is used.

Description

Relays and equipment

[0001] This disclosure claims priority to Chinese patent application No. 202410406006.2 filed on April 3, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the technical field of electric control devices, and in particular to a relay and a device including the relay. Background Art

[0003] A relay is an electronic control device with a control system (also known as an input circuit) and a controlled system (also known as an output circuit). It is commonly used in automatic control circuits. A relay is essentially an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays a role in circuits such as automatic regulation, safety protection, and circuit switching. However, when relays in related technologies form three conductive loops with external circuits, the size of the relay is still relatively large, and further reduction is needed. Summary of the Invention

[0004] The embodiments of the present disclosure provide a relay and a device to improve the problem of large size existing in the related art.

[0005] The relay of the embodiment of the present disclosure includes four contact lead-out components electrically connected to external circuits respectively to form three conductive loops with the external circuits.

[0006] According to some embodiments of the present disclosure, the four contact lead-out components are respectively a first contact lead-out component, a second contact lead-out component, a third contact lead-out component and a fourth contact lead-out component, and the three conductive circuits are respectively a first conductive circuit, a second conductive circuit and a third conductive circuit, wherein, when the relay is in a first state, the second contact lead-out component contacts the third contact lead-out component to form the first conductive circuit with the external circuit; when the relay is in a second state, the first contact lead-out component contacts the third contact lead-out component to form the second conductive circuit with the external circuit, and the second contact lead-out component contacts the fourth contact lead-out component to form the third conductive circuit with the external circuit.

[0007] According to some embodiments of the present disclosure, the first state is that the coil of the relay passes one of a positive current and a negative current, and the second state is that the coil of the relay passes the other of a positive current and a negative current.

[0008] According to some embodiments of the present disclosure, the first state is one of the coil of the relay being energized and de-energized, and the second state is the other of the coil of the relay being energized and de-energized.

[0009] According to some embodiments of the present disclosure, corresponding contacts are provided on the sides of adjacent contact lead-out components that face each other.

[0010] According to some embodiments of the present disclosure, the relay has different numbers of conductive loops when in the first state and the second state, respectively, so as to adjust the output voltage of the external circuit.

[0011] According to some embodiments of the present disclosure, the second contact lead-out component and the third contact lead-out component are located between the first contact lead-out component and the fourth contact lead-out component, and each of the second contact lead-out component and the third contact lead-out component is provided with contacts on both sides of the contact and separation direction of the second contact lead-out component and the third contact lead-out component.

[0012] According to some embodiments of the present disclosure, the further comprising:

[0013] The push rod is connected to the second contact lead-out component and the third contact lead-out component, and is used to drive the second contact lead-out component and the third contact lead-out component to move.

[0014] According to some embodiments of the present disclosure, there are two push rods, the two push rods are connected to the second contact lead-out assembly and the third contact lead-out assembly respectively, the two push rods reciprocate along the movement direction of the push rod, and the movement directions of the two push rods are opposite;

[0015] Along the moving direction of the push rod, the first contact lead-out component, the third contact lead-out component, the second contact lead-out component and the fourth contact lead-out component are arranged in sequence.

[0016] According to some embodiments of the present disclosure, the second contact lead-out assembly and the third contact lead-out assembly each include a first lead-out piece, a first movable contact, a first static contact, and a first movable spring piece, wherein one end of the first movable spring piece in the length direction is connected to the first lead-out piece, and the other end of the first movable spring piece in the length direction is provided with the first movable contact and connected to the push rod; the first static contact is connected to the first lead-out piece;

[0017] The first contact lead-out component and the fourth contact lead-out component each include a second lead-out piece and a second static contact, and the second static contact is connected to the second lead-out piece;

[0018] When the relay is in the first state, the corresponding first static contacts in the second contact lead-out component and the third contact lead-out component are in contact with the first moving contact; when the relay is in the second state, the first moving contact of the third contact lead-out component is in contact with the second static contact of the first contact lead-out component, and the first moving contact of the second contact lead-out component is in contact with the second static contact of the fourth contact lead-out component.

[0019] According to some embodiments of the present disclosure, the first contact lead-out assembly and the fourth contact lead-out assembly further include a second movable spring and a second movable contact, one end of the second movable spring in the longitudinal direction is connected to the second lead-out piece, and the other end of the second movable spring in the longitudinal direction is provided with the second movable contact; the push rod is also connected to the two second movable springs;

[0020] When the relay is in the second state, the first static contact of the third contact lead-out component contacts the second moving contact of the first contact lead-out component, and the first static contact of the second contact lead-out component contacts the second moving contact of the fourth contact lead-out component.

[0021] According to some embodiments of the present disclosure, along the movement direction of the push rod, two of the second movable reeds and two of the first movable reeds are alternately arranged.

[0022] According to some embodiments of the present disclosure, the relay further includes a magnetic circuit portion, and the number of the push rods is two, and the two push rods are respectively connected to the second contact lead-out component and the third contact lead-out component;

[0023] The two push rods are driven by one magnetic circuit part, and then the two push rods simultaneously drive the second contact lead-out component and the third contact lead-out component to move.

[0024] According to some embodiments of the present disclosure, the further comprising:

[0025] The push rod is connected to the third contact lead-out component and the fourth contact lead-out component, and is used to drive the third contact lead-out component and the fourth contact lead-out component to move.

[0026] According to some embodiments of the present disclosure, the number of the pushing rod is one;

[0027] The first contact lead-out component, the third contact lead-out component, the second contact lead-out component, and the fourth contact lead-out component are arranged in sequence along the moving direction of the push rod.

[0028] According to some embodiments of the present disclosure, the third contact lead-out assembly and the fourth contact lead-out assembly each include a third lead-out piece, a third movable contact, and a third movable spring piece, wherein one end of the third movable spring piece in the length direction is connected to the third lead-out piece, and the other end of the third movable spring piece in the length direction is provided with the third movable contact and is connected to the push rod;

[0029] The first contact lead-out component and the second contact lead-out component both include a fourth lead-out piece and a third static contact, and the third static contact is connected to the fourth lead-out piece;

[0030] When the relay is in the first state, the third moving contact of the third contact lead-out component contacts the third static contact of the second contact lead-out component; when the relay is in the second state, the third moving contact of the third contact lead-out component contacts the third static contact of the first contact lead-out component, and the third moving contact of the fourth contact lead-out component contacts the third static contact of the second contact lead-out component.

[0031] According to some embodiments of the present disclosure, the third contact lead-out assembly and the fourth contact lead-out assembly each include a third lead-out piece, a third movable contact, and a third movable spring piece, wherein one end of the third movable spring piece in the length direction is connected to the third lead-out piece, and the other end of the third movable spring piece in the length direction is provided with the third movable contact and is connected to the push rod;

[0032] Wherein, a third movable spring is provided on both sides of the third lead-out piece of the third contact lead-out component in the thickness direction, and a third movable spring is provided on one side of the third lead-out piece of the fourth contact lead-out component in the thickness direction;

[0033] The first contact lead-out component and the second contact lead-out component both include a fourth lead-out piece and a third static contact, and the third static contact is connected to the fourth lead-out piece;

[0034] When the relay is in the first state, the third movable contact on one of the third movable spring pieces of the third contact lead-out component contacts the third static contact of the second contact lead-out component; when the relay is in the second state, the third movable contact on the other third movable spring piece of the third contact lead-out component contacts the third static contact of the first contact lead-out component, and the third movable contact of the fourth contact lead-out component contacts the third static contact of the second contact lead-out component.

[0035] According to some embodiments of the present disclosure, the orthographic projections of the third movable contact and the third lead-out piece of the third contact lead-out component on a target plane overlap; the orthographic projections of the third movable contact and the third lead-out piece of the fourth contact lead-out component on the target plane overlap;

[0036] A first included angle is formed between each of the third movable spring pieces of the third contact lead-out assembly and the third lead-out piece, and a second included angle is formed between the third movable spring piece of the fourth contact lead-out assembly and the third lead-out piece;

[0037] The target plane is perpendicular to the contact and separation directions of the third moving contact and the third static contact.

[0038] According to some embodiments of the present disclosure, the number of the push rod is one, and the relay further includes:

[0039] The magnetic circuit part, the push rod is driven by the same magnetic circuit part, and the push rod simultaneously drives the third contact lead-out component and the fourth contact lead-out component to move.

[0040] The device of the embodiment of the present disclosure includes the relay described in the present disclosure.

[0041] According to some embodiments of the present disclosure, the four contact lead-out components are respectively a first contact lead-out component, a second contact lead-out component, a third contact lead-out component and a fourth contact lead-out component, and the device also includes two circuits, each of the circuits having an output end and an input end, wherein the output end of one of the circuits is electrically connected to the second contact lead-out component of the relay, and the input end is electrically connected to the first contact lead-out component of the relay; the output end of the other circuit is electrically connected to the fourth contact lead-out component of the relay, and the input end is electrically connected to the third contact lead-out component of the relay.

[0042] According to some embodiments of the present disclosure, the circuit includes a power supply.

[0043] One embodiment of the above application has at least the following advantages or beneficial effects:

[0044] The relay of the disclosed embodiment has four contact lead assemblies electrically connected to an external circuit, forming three conductive loops with the external circuit. This reduces the number of contact lead assemblies while maintaining the same conductive loop, thereby reducing the size of the relay and contributing to its miniaturization. This also reduces the complexity of the device's control logic and material costs. Furthermore, the four contact lead assemblies are provided in one relay, making the relay structure more compact and more efficient to assemble. Furthermore, the wiring between the relay and the external circuit is simpler and reduces copper usage.

[0045] In the relay of the disclosed embodiment, the second and third contact lead assemblies are designed as a shared contact lead assembly. When the relay is in the first state, the second contact lead assembly contacts the third contact lead assembly. When the relay is in the second state, the first contact lead assembly contacts the third contact lead assembly, and the second contact lead assembly contacts the fourth contact lead assembly. As a result, the four contact lead assemblies can form three conductive loops with the external circuit, and the number of conductive loops formed varies when the relay is in the first and second states, respectively. Thus, in the relay of the disclosed embodiment, the four contact lead assemblies can form three conductive loops with the external circuit. This reduces the number of contact lead assemblies while maintaining the same conductive loops, thereby reducing the size of the relay and facilitating miniaturization. Furthermore, this reduces the complexity of the device's control logic and material costs. Furthermore, the four contact lead assemblies are provided in one relay, making the relay more compact and more efficient to assemble. Furthermore, the wiring between the relay and the external circuit is simpler and copper usage is reduced.

[0046] Furthermore, the push rod is driven by a magnetic circuit part. When one of the corresponding moving and static contacts in the relay sticks and cannot be disconnected, the magnetic circuit part cannot drive the push rod to move, and thus cannot drive the moving and static contacts of the contact lead-out part to complete the switching, thereby locking the relay in the first state or the second state, avoiding short circuit and improving safety.

[0047] Furthermore, by setting the structure and arrangement of the contact lead-out part, the current flows in the same or opposite direction, so that when the relay is in the first state or the second state, it has the ability to resist short circuits, avoiding the problem of the moving and static contacts instantly popping open due to the occurrence of short-circuit current.

[0048] Furthermore, the three conductive loops formed by the four contact lead-out components and the external circuit can be used to adjust the voltage of the external circuit, so that the relay of the embodiment of the present disclosure can meet the user's requirements for different voltages.

[0049] Furthermore, corresponding contacts are provided on the sides facing each other of adjacent contact lead-out components in the relay, so that the four contact lead-out components and the external circuit form three conductive loops, making the relay structure more compact and smaller in size. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] FIG1 is a schematic top view showing a relay in a first state according to a first embodiment of the present disclosure.

[0051] FIG2 is a schematic top view showing the relay of the first embodiment of the present disclosure in the second state.

[0052] FIG3 is a schematic top view showing a relay according to a second embodiment of the present disclosure in a first state.

[0053] FIG4 is a schematic top view showing a relay according to a second embodiment of the present disclosure in a second state.

[0054] FIG5 is a schematic top view showing a relay according to a third embodiment of the present disclosure in a first state, wherein only the push rod and the contact lead portion are shown.

[0055] FIG6 is a schematic top view showing the relay of the third embodiment of the present disclosure in the second state, in which only the push rod and the contact lead portion are shown.

[0056] FIG7 is a schematic top view showing a relay according to a fourth embodiment of the present disclosure in a first state, wherein only the push rod and the contact lead portion are shown.

[0057] FIG8 is a schematic top view showing a relay according to a fourth embodiment of the present disclosure in a second state, wherein only the push rod and the contact lead portion are shown.

[0058] FIG9 shows a wiring diagram of a relay and two power supplies included in the device according to an embodiment of the present disclosure, wherein the relay is in a first state.

[0059] FIG10 shows a wiring diagram of a relay and two power supplies included in the device according to an embodiment of the present disclosure, wherein the relay is in a second state.

[0060] The description of the accompanying drawings is as follows: 10. Relay, 20. Electrical circuit, 100. Base, 200. Contact lead portion, 210. First contact lead assembly, 211. First lead piece, 212. First moving contact, 213. First stationary contact, 214. First moving spring, 220. Second contact lead assembly, 221. Second lead piece, 222. Second moving contact, 223. Second stationary contact, 224. Second moving spring, 230. Third contact lead assembly, 231. Third lead piece, 232. Third moving contact, 233. Third moving spring, 240. Fourth contact lead assembly, 241. Fourth lead piece, 242. Third stationary contact, 310. Push rod, 400. Magnetic circuit portion, 410. Coil assembly, 420. Driving member, 421. Armature, 422. Swing arm, D1, first direction, D2, second direction, D3, third direction. DETAILED DESCRIPTION

[0061] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0062] It is understood that the terms "including" and "having" and any variations thereof in the embodiments of the present disclosure are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to the process, method, product, or apparatus.

[0063] As shown in Figures 1 and 2, the relay 10 of the present disclosure includes a base 100, a contact lead portion 200, a push rod 310, and a magnetic circuit portion 400. The contact lead portion 200, the push rod 310, and the magnetic circuit portion 400 are disposed on the base 100. The magnetic circuit portion 400 is used to drive the push rod 310 to move relative to the base 100. The push rod 310 is connected to the contact lead portion 200. The contact lead portion 200 is used to electrically connect to an external circuit.

[0064] The magnetic circuit portion 400 may include a coil assembly 410 and a driver 420. The driver 420 is driven by the coil assembly 410 and is movably connected to the base 100. The push rod 310 is connected to the driver 420, and the push rod 310 is connected to the contact lead portion 200. The driver 420 is used to drive the push rod 310 to move. The coil assembly 410 includes a coil and a coil frame, and the coil is wound around the outer circumference of the coil frame.

[0065] The contact lead portion 200 includes four contact lead components, each of which is used to electrically connect to an external circuit to form three conductive loops with the external circuit: a first conductive loop, a second conductive loop, and a third conductive loop. The four contact lead components are a first contact lead component 210, a second contact lead component 220, a third contact lead component 230, and a fourth contact lead component 240.

[0066] When the relay 10 is in the first state, the second contact lead component 220 contacts the third contact lead component 230 to form a first conductive loop with the external circuit. When the relay 10 is in the second state, the first contact lead component 210 contacts the third contact lead component 230 to form a second conductive loop with the external circuit, and the second contact lead component 220 contacts the fourth contact lead component 240 to form a third conductive loop with the external circuit, enabling the relay 10 to adjust the output voltage of the external circuit. The first conductive loop, the second conductive loop, and the third conductive loop are different.

[0067] It will be understood that, in one embodiment, the relay 10 of the disclosed embodiment may be a magnetic latching relay, wherein the first state is when the coil of the relay 10 flows through either a positive current or a negative current, and the second state is when the coil of the relay 10 flows through the other of the positive current and the negative current. For example, when the coil of the relay 10 flows through a positive current, the relay 10 is in the first state; when the coil of the relay 10 flows through a negative current, the relay 10 is in the second state. Alternatively, when the coil of the relay 10 flows through a negative current, the relay 10 is in the first state; when the coil of the relay 10 flows through a positive current, the relay 10 is in the second state.

[0068] In another embodiment, the relay 10 of the disclosed embodiment may be a conventional relay, wherein the first state is one of the coils of the relay 10 being energized or de-energized, and the second state is the other of the coils of the relay 10 being energized or de-energized. For example, when the coil of the relay 10 is energized, the relay 10 is in the first state; when the coil of the relay 10 is de-energized, the relay 10 is in the second state. Alternatively, when the coil of the relay 10 is de-energized, the relay 10 is in the first state; when the coil of the relay 10 is energized, the relay 10 is in the second state.

[0069] Thus, by switching the relay 10 between the first state and the second state, the four contact lead-out components can form three sets of moving and static contact coordination structures.

[0070] 1 and 2 , the push rod 310 is connected to the second contact lead-out assembly 220 and the third contact lead-out assembly 230 to drive the second contact lead-out assembly 220 and the third contact lead-out assembly 230 to move, thereby forming three sets of moving and static contact matching structures when the relay 10 is in the first state or the second state.

[0071] For ease of explanation, the first contact lead assembly 210 is numbered 1, the second contact lead assembly 220 is numbered 2, the third contact lead assembly 230 is numbered 3, and the fourth contact lead assembly 240 is numbered 4. The following description uses the numbers to represent the respective contact lead assembly. In the disclosed embodiment, the push rod 310 is connected to 2 and 3; the push rod 310 is not connected to 1 and 4.

[0072] When the relay 10 is in the first state, 2 and 3 are in contact, and 1 and 3 are disconnected, 2 and 4 are disconnected, 1 and 2 are disconnected, and 3 and 4 are disconnected. When the relay 10 is in the second state, 2 and 3 are in contact with 1 and 4 respectively (i.e., 1 and 3 are in contact, 2 and 4 are in contact), and 1 and 2 are disconnected, and 3 and 4 are disconnected.

[0073] As an example, there are two push rods 310, each connected to 2 and 3, respectively. The driving member 420 is connected to the two push rods 310 to simultaneously drive the two push rods 310 to reciprocate along the movement direction of the push rods 310, with the two push rods 310 moving in opposite directions. The two push rods 310 simultaneously drive the second contact lead-out assembly 220 and the third contact lead-out assembly 230 to move, thereby causing the second contact lead-out assembly 220 and the third contact lead-out assembly 230 to move synchronously.

[0074] The driving member 420 is swingably connected to the base 100 and includes an armature 421 and a swing arm 422. The armature 421 is connected to the swing arm 422. The two ends of the swing arm 422 are respectively connected to the two push rods 310. By changing the direction of the magnetic field of the coil assembly 410, the driving member 420 is driven to swing, thereby driving the two push rods 310 to move back and forth in an alternating manner.

[0075] The driving member 420 further includes a permanent magnet, which is disposed between the two armatures 421. In one embodiment, the swing arm 422 may be made of plastic, and the armature 421, the permanent magnet, and the swing arm 422 may be integrally formed by integral injection molding.

[0076] For convenience of description, the movement direction of the push rod 310 is defined as the first direction D1, the arrangement direction of the two push rods 310 is defined as the second direction D2, and the direction perpendicular to the first direction D1 and the second direction D2 is defined as the third direction D3.

[0077] The second and third contact lead-out assemblies 220 and 230 are arranged along the direction of motion of the push rod 310 (first direction D1). The first and fourth contact lead-out assemblies 210 and 240 are located on opposite sides of the second and third contact lead-out assemblies 220 and 230, respectively. That is, 2 and 3 are arranged along the first direction D1, and 1 and 4 are located on opposite sides of 2 and 3, respectively, in the first direction D1. Along the first direction D1, 1, 3, 2, and 4 are arranged in that order, with 2 and 3 located between 1 and 4.

[0078] Continuing to refer to Figures 1 and 2, both 2 and 3 include a first lead-out piece 211, a first movable contact 212, a first stationary contact 213, and a first movable spring 214. One longitudinal end of the first movable spring 214 is connected to the first lead-out piece 211, and the other longitudinal end of the first movable spring 214 is provided with the first movable contact 212 and connected to the push rod 310. The first stationary contact 213 is connected to the first lead-out piece 211. The longitudinal direction of the first movable spring 214 is parallel to the second direction D2.

[0079] The first movable contact 212 and the first movable spring 214 can be an integral structure or a separate structure. When the first movable contact 212 and the first movable spring 214 are separate structures, the first movable contact 212 can be connected to the first movable spring 214 by riveting, but the present invention is not limited thereto.

[0080] The first static contact 213 and the first lead-out piece 211 can be an integral structure or a separate structure. When the first static contact 213 and the first lead-out piece 211 are separate structures, the first static contact 213 can be connected to the first lead-out piece 211 by riveting, but the present invention is not limited thereto.

[0081] Furthermore, in one embodiment, the first stationary contacts 213 of 2 and 3 may be connected only to the first lead-out piece 211, and not to the first movable spring piece 214. Of course, in another embodiment, the first stationary contact 213 may be connected to both the first lead-out piece 211 and the first movable spring piece 214, for example, the first stationary contact 213 may be riveted to both the first lead-out piece 211 and the first movable spring piece 214, but the present invention is not limited thereto.

[0082] In the embodiment of the present disclosure, the two first movable springs 214 of 2 and 3 are respectively connected to the two push rods 310. Furthermore, each first movable spring 214 is provided with one end of the first movable contact 212 connected to the push rod 310. When the two push rods 310 move back and forth under the action of the driving member 420, they can drive the two first movable springs 214 to swing, thereby realizing the contact or separation of the two corresponding groups of first movable contacts 212 and the first static contacts 213. As shown in Figure 1, when the relay 10 is in the first state, the two corresponding groups of first movable contacts 212 and the first static contacts 213 in 2 and 3 are in contact, thereby forming a set of movable and static contact matching structures.

[0083] As shown in FIG. 1 and FIG. 2 , both 1 and 4 include a second lead-out piece 221 and a second static contact 223 , and the second static contact 223 is connected to the second lead-out piece 221 .

[0084] The second static contact 223 and the second lead-out piece 221 can be an integral structure or a separate structure. When the second static contact 223 and the second lead-out piece 221 are separate structures, the second static contact 223 can be connected to the second lead-out piece 221 by riveting, but the present invention is not limited thereto.

[0085] The two first lead-out pieces 211 and the two second lead-out pieces 221 are used for electrical connection with an external circuit.

[0086] As shown in Figure 1, when relay 10 is in the first state, the corresponding first movable contacts 212 and first stationary contacts 213 in contacts 2 and 3 contact each other, forming a pair of coordinated movable and stationary contacts. As shown in Figure 2, when relay 10 is in the second state, the two first movable contacts 212 in contacts 2 and 3 contact each other with the two second stationary contacts 223 in contacts 1 and 4, respectively, forming two pairs of coordinated movable and stationary contacts. Specifically, the first movable contact 212 in contact 3 contacts the second stationary contact 223 in contact 1, and the first movable contact 212 in contact 2 contacts the second stationary contact 223 in contact 4.

[0087] As an example, the two first movable spring pieces 214 in 2 and 3 are spaced apart along the first direction D1. The first lead pieces 211 and the second lead pieces 221 in 1 and 2 are spaced apart along the first direction D1, and the first movable contact 212 of 3 is provided between the first lead piece 211 and the second lead piece 221. The first lead piece 211 and the second lead piece 221 in 3 and 4 are spaced apart along the first direction D1, and the first movable contact 212 of 2 is provided between the first lead piece 211 and the second lead piece 221.

[0088] As shown in Figures 1 and 2, in the four contact lead-out components, the surfaces facing each other in two adjacent contact lead-out components are provided with corresponding moving contacts and static contacts. In the embodiment of the present disclosure, 1 and 3 are arranged adjacently, 2 and 3 are arranged adjacently, and 2 and 4 are arranged adjacently.

[0089] Specifically, the surfaces facing each other of 1 and 3 are provided with corresponding second static contacts 223 and first moving contacts 212; the surfaces facing each other of 2 and 3 are provided with two groups of corresponding first moving contacts 212 and first static contacts 213; the surfaces facing each other of 2 and 4 are provided with second static contacts 223 and first moving contacts 212.

[0090] It can be seen that the first movable contacts 212 are provided on both side surfaces of the first movable reed pieces 214 of 2 and 3 in the thickness direction (first direction D1), so that the first movable contacts 212 of 2 and 3 form conversion contacts.

[0091] As shown in Figure 1, relay 10 is in the first state, with contacts 2 and 3 in contact, contacts 1 and 3 disconnected, and contacts 2 and 4 disconnected. At this point, if current flows through first lead-out piece 211 of contact 2 or contact 3, the current flows in the same direction as it passes through the two first movable springs 214 of contact 2 and contact 3. This creates an attractive force between the two first movable springs 214, thereby preventing the first movable contact 212 and the first stationary contact 213 from instantly opening in the event of a short-circuit current, thereby improving short-circuit resistance.

[0092] 1 and 2 again, the push rod 310 is driven by a magnetic circuit portion 400 .

[0093] In the embodiment of the present disclosure, the two push rods 310 are driven by a magnetic circuit portion 400. When a group of corresponding moving and static contacts in the relay 10 stick together and cannot be disconnected, the magnetic circuit portion 400 cannot drive the push rod 310 to move, and thus cannot drive the moving and static contacts of the contact lead-out portion 200 to complete the switching, thereby locking the relay 10 in the first state or the second state, avoiding short circuits and improving safety.

[0094] As shown in FIG3 and FIG4 , the relay 10 of the second embodiment of the present disclosure is similar to the relay 10 of the first embodiment and is not described in detail. The difference between the relay 10 and the first embodiment is as follows:

[0095] The first contact lead-out assembly 210 and the fourth contact lead-out assembly 240 also include a second movable spring 224 and a second movable contact 222. One longitudinal end of the second movable spring 224 is connected to the second lead-out piece 221, and the other longitudinal end of the second movable spring 224 is provided with the second movable contact 222. The push rod 310 is also connected to the two second movable springs 224. The longitudinal direction of the second movable springs 224 is parallel to the second direction D2.

[0096] The second movable contact 222 and the second movable spring 224 can be an integral structure or a separate structure. When the second movable contact 222 and the second movable spring 224 are separate structures, the second movable contact 222 can be connected to the second movable spring 224 by riveting, but the present invention is not limited thereto.

[0097] Furthermore, in one embodiment, the second static contacts 223 of 1 and 4 may be connected only to the second lead-out piece 221, and not to the second movable spring piece 224. Of course, in another embodiment, the second static contact 223 may be connected to both the second lead-out piece 221 and the second movable spring piece 224. For example, the second static contact 223 may be riveted to both the second lead-out piece 221 and the second movable spring piece 224, but the present invention is not limited thereto.

[0098] In the disclosed embodiment, the two second movable springs 224 of 1 and 4 are respectively connected to two push rods 310. Furthermore, one end of each second movable spring 224, which is provided with a second movable contact 222, is connected to the push rod 310. When the two push rods 310 reciprocate under the action of the driving member 420, they can drive the two second movable springs 224 to swing.

[0099] As shown in FIG4 , when relay 10 is in the second state, the two first stationary contacts 213 of contacts 2 and 3 respectively contact the two second movable contacts 222 of contacts 1 and 4. Specifically, the second movable contact 222 of contact 1 contacts the first stationary contact 213 of contact 3, and the second stationary contact 223 of contact 1 contacts the first movable contact 212 of contact 3; the second movable contact 222 of contact 4 contacts the first stationary contact 213 of contact 2, and the second stationary contact 223 of contact 4 contacts the first movable contact 212 of contact 2.

[0100] Thus, it can be seen that 1 and 3 form a set of moving and static contact coordination structures, and the first moving spring piece 214 and the second moving spring piece 224 in 1 and 3 are arranged in parallel. 2 and 4 form a set of moving and static contact coordination structures, and the first moving spring piece 214 and the second moving spring piece 224 in 2 and 4 are arranged in parallel.

[0101] Along the moving direction of the push rod 310 (the first direction D1 ), the two second movable reeds 224 and the two first movable reeds 214 are alternately arranged.

[0102] As shown in Figure 4, relay 10 is in the second state, with contacts 1 and 3 in contact, contacts 2 and 4 in contact, and contacts 2 and 3 disconnected. At this point, when current flows through the first and second movable springs 214, 224 in contacts 1 and 3, the current flows in the same direction. This creates an attractive force between the first and second movable springs 214, 224 in contacts 1 and 3, thereby preventing the corresponding movable and static contacts in contacts 1 and 3 from instantly opening when a short-circuit current occurs, improving short-circuit resistance. Similarly, the current flows in the same direction between the first and second movable springs 214, 224 in contacts 2 and 4, thereby creating an attractive force between the first and second movable springs 214, 224, thereby preventing the corresponding movable and static contacts in contacts 2 and 4 from instantly opening when a short-circuit current occurs, improving short-circuit resistance.

[0103] Thus, it can be seen that, in the relay 10 of the second embodiment of the present disclosure, as shown in FIG3 , when the relay 10 is in the first state, an attraction force can be generated between the two first movable springs 214 in 2 and 3; and as shown in FIG4 , when the relay 10 is in the second state, an attraction force can be generated between the first movable springs 214 and the second movable springs 224 in 1 and 3, and an attraction force can be generated between the first movable springs 214 and the second movable springs 224 in 2 and 4. Thus, it can be seen that, when the relay 10 is in the first state or the second state, the relay 10 has short-circuit resistance, which to a certain extent prevents the movable and static contacts from instantly springing open due to the occurrence of a short-circuit current.

[0104] As shown in FIG5 and FIG6 , the relay 10 of the third embodiment of the present disclosure is similar to the relay 10 of the first embodiment and is not described in detail. The difference between the relay 10 and the first embodiment is as follows:

[0105] There is one push rod 310. Along the direction of movement of the push rod 310, 1, 3, 2, and 4 are arranged in order. The push rod 310 is connected to the third contact lead-out assembly 230 and the fourth contact lead-out assembly 240, that is, the push rod 310 is connected to 3 and 4. The push rod 310 is used to simultaneously drive the third contact lead-out assembly 230 and the fourth contact lead-out assembly 240 to move synchronously.

[0106] When the relay 10 is in the first state, 2 and 3 are in contact, and 1 and 3 are disconnected, 2 and 4 are disconnected, and 1 and 4 are disconnected; when the relay 10 is in the second state, 1 and 3 are in contact, 2 and 4 are in contact, and 2 and 3 are disconnected, and 1 and 4 are disconnected.

[0107] As shown in Figures 5 and 6, 3 and 4 both include a third lead-out piece 231, a third moving contact 232 and a third moving spring 233. One end of the third moving spring 233 in the length direction is connected to the third lead-out piece 231, and the other end of the third moving spring 233 in the length direction is provided with a third moving contact 232 and is connected to the push rod 310.

[0108] The third movable contact 232 and the third movable spring 233 may be integral or separate. When the third movable contact 232 and the third movable spring 233 are separate, the third movable contact 232 may be connected to the third movable spring 233 by riveting, but the present invention is not limited thereto.

[0109] 1 and 2 both include a fourth lead-out piece 241 and a third static contact 242 , and the third static contact 242 is connected to the fourth lead-out piece 241 .

[0110] The third static contact 242 and the fourth lead-out piece 241 can be an integral structure or a separate structure. When the third static contact 242 and the fourth lead-out piece 241 are separate structures, the third static contact 242 can be connected to the fourth lead-out piece 241 by riveting, but the present invention is not limited thereto.

[0111] When the relay 10 is in the first state, the third moving contact 232 of 3 contacts the third static contact 242 of 2, and 1 and 3 are disconnected, and 2 and 4 are disconnected; when the relay 10 is in the second state, the third moving contact 232 of 3 contacts the third static contact 242 of 1, and the third moving contact 232 of 4 contacts the third static contact 242 of 2, and 3 and 2 are disconnected.

[0112] As shown in FIG7 and FIG8 , the relay 10 of the fourth embodiment of the present disclosure is similar to the relay 10 of the third embodiment and is not described in detail. The difference between the relay 10 and the third embodiment is as follows:

[0113] 3 and 4 both include a third lead-out piece 231, a third moving contact 232 and a third moving spring 233. One end of the third moving spring 233 in the length direction is connected to the third lead-out piece 231, and the other end of the third moving spring 233 in the length direction is provided with a third moving contact 232 and connected to the push rod 310.

[0114] A third movable spring 233 is provided on both sides of the third lead-out piece 231 of the third contact lead-out component 230 in the thickness direction. A third movable spring 233 is provided on the side of the third lead-out piece 231 of the fourth contact lead-out component 240 facing the third contact lead-out component 230 .

[0115] 1 and 2 both include a fourth lead-out piece 241 and a third static contact 242 , and the third static contact 242 is connected to the fourth lead-out piece 241 .

[0116] When relay 10 is in the first state, the third movable contact 232 on one of the third movable reeds 233 included in relay 3 contacts the third stationary contact 242 of relay 2. When relay 10 is in the second state, the third movable contact 232 on the other third movable reed 233 included in relay 3 contacts the third stationary contact 242 of relay 1, and the third movable contact 232 of relay 4 contacts the third stationary contact 242 of relay 2. Consequently, relay 3 and relay 2 are disconnected.

[0117] In the embodiment of the present disclosure, one of the third movable spring pieces 233 included in 3 is located between the third lead-out piece 231 of 3 and the fourth lead-out piece 241 of 2, and the other third movable spring piece 233 included in 3 is located between the third lead-out piece 231 of 3 and the fourth lead-out piece 241 of 1; and the third movable spring piece 233 included in 4 is located between the third lead-out piece 231 of 4 and the fourth lead-out piece 241 of 2, but the present invention is not limited to this.

[0118] Continuing with Figures 7 and 8 , the orthographic projections of the third movable contact 232 and the third lead-out piece 231 of the third contact lead-out assembly 230 on a target plane overlap. The orthographic projections of the third movable contact 232 and the third lead-out piece 231 of the fourth contact lead-out assembly 240 on the target plane overlap. The target plane is perpendicular to the contact and separation direction (first direction D1) between the third movable contact 232 and the third stationary contact 242. Furthermore, each third movable spring piece 233 of the third contact lead-out assembly 230 forms a first angle with the third lead-out piece 231, and each third movable spring piece 233 of the fourth contact lead-out assembly 240 forms a second angle with the third lead-out piece 231. Both the first and second angles are acute angles.

[0119] As shown in FIG7 , the third movable contact 232 on one of the third movable springs 233 included in relay 3 contacts the third stationary contact 242 of relay 2. Because the orthographic projections of the third movable contact 232 and the third lead-out piece 231 of relay 3 overlap on the target plane, and an angle is formed between the third movable spring 233 and the third lead-out piece 231, the currents flowing through the third movable spring 233 and the third lead-out piece 231 of relay 3 are in opposite directions (as indicated by the arrows in FIG7 ), generating a repulsive force between the third movable spring 233 and the third lead-out piece 231. Therefore, when relay 10 is in the first state, relay 10 has short-circuit resistance.

[0120] Similarly, as shown in FIG8 , for relays 1 and 3, the currents flowing through the third lead piece 231 and the third movable spring piece 233 of relay 3 are in opposite directions (as indicated by the arrows in FIG8 ), thereby generating a repulsive force between the third movable spring piece 233 and the third lead piece 231 of relay 3. For relays 2 and 4, the currents flowing through the third lead piece 231 and the third movable spring piece 233 of relay 4 are in opposite directions (as indicated by the arrows in FIG8 ), thereby generating a repulsive force between the third movable spring piece 233 and the third lead piece 231 of relay 4. Therefore, when relay 10 is in the second state, relay 10 has short-circuit resistance.

[0121] It can be seen that when the relay 10 is in the first state or the second state, the relay 10 has the ability to resist short circuits, and to a certain extent avoids the instantaneous opening of the moving and static contacts when a short circuit current occurs.

[0122] As shown in Figures 9 and 10, the present disclosure also provides a device, including the relay 10 of any of the above embodiments. Since it includes the relay 10 of any of the above embodiments, the device of the embodiment of the present disclosure has all the advantages and beneficial effects of any of the above embodiments, which will not be repeated here.

[0123] The following describes in detail how the four contact lead-out components of the relay 10 of the present disclosure are connected to an external circuit in conjunction with Figures 9 and 10. The device shown in Figure 9 is an example of the relay of the first embodiment or the relay of the second embodiment.

[0124] The device of the embodiment of the present disclosure also includes two circuits 20, each circuit 20 having an output end and an input end, wherein the output end of one circuit 20 is electrically connected to the second contact lead-out component 220 of the relay, the input end of one circuit 20 is electrically connected to the first contact lead-out component 210, the output end of the other circuit 20 is electrically connected to the fourth contact lead-out component 240 of the relay, and the input end of the other circuit 20 is electrically connected to the third contact lead-out component 230.

[0125] In one embodiment, circuit 20 includes a power supply. The positive electrode of the power supply can be considered the output terminal of circuit 20, and the negative electrode of the power supply can be considered the input terminal of circuit 20. The positive and negative electrodes of one power supply are electrically connected to terminals 1 and 2 of relay 10, respectively, while the positive and negative electrodes of the other power supply are electrically connected to terminals 3 and 4 of relay 10, respectively. The four contact pins of relay 10 form three conductive loops with the power supply. The number of conductive loops formed by relay 10 in its first and second states is different, enabling relay 10 to regulate the output voltages of both power supplies.

[0126] Of course, in other embodiments, the circuit 20 is not limited to including a power supply. For example, the circuit 20 may also be a circuit having monitoring and control functions, which are not listed here. In addition, the circuit 20 may also include a motor.

[0127] In summary, the relay 10 and the device according to the embodiments of the present disclosure have at least the following advantages and beneficial effects:

[0128] In the relay of the present disclosure, the second contact lead assembly 220 and the third contact lead assembly 230 are designed as a shared contact lead assembly. When the relay is in the first state, the second contact lead assembly 220 contacts the third contact lead assembly 230. When the relay is in the second state, the first contact lead assembly 210 contacts the third contact lead assembly 230, and the second contact lead assembly 220 contacts the fourth contact lead assembly 240. As a result, the four contact lead assemblies can form three conductive loops with the external circuit, and the number of conductive loops formed varies when the relay is in the first and second states, respectively. Thus, the relay of the present disclosure can form three conductive loops with the external circuit using four contact lead assemblies. Compared to relays in related art, the relay of the present disclosure reduces the number of contact lead assemblies while maintaining the same conductive loops, thereby reducing the size of the relay and facilitating miniaturization. Furthermore, the complexity of the device's control logic and material costs are reduced. Furthermore, the four contact lead assemblies are provided in one relay, making the relay more compact and more efficient to assemble. In addition, wiring between the relay and the external circuit is simpler and uses less copper.

[0129] Furthermore, the push rod 310 is driven by a magnetic circuit part 400. When a corresponding moving and static contacts in the relay 10 stick and cannot be disconnected, the magnetic circuit part 400 cannot drive the push rod 310 to move, and thus cannot drive the moving and static contacts of the contact lead-out part 200 to complete the switching, thereby locking the relay 10 in the first state or the second state, avoiding short circuit and improving safety.

[0130] Furthermore, by setting the structure and arrangement of the contact lead-out part 200, the direction of current flow is the same or opposite, and thus when the relay 10 is in the first state or the second state, it has short-circuit resistance, avoiding the problem of instantaneous opening of the moving and static contacts due to the occurrence of short-circuit current.

[0131] Furthermore, the three conductive loops formed by the four contact lead-out components and the external circuit can be used to adjust the voltage of the external circuit, so that the relay of the embodiment of the present disclosure can meet the user's requirements for different voltages.

[0132] Furthermore, corresponding contacts are provided on the sides facing each other of adjacent contact lead-out components in the relay, so that the four contact lead-out components and the external circuit form three conductive loops, making the relay structure more compact and smaller in size.

[0133] It is understandable that the various embodiments / implementations provided in the present disclosure can be combined with each other without causing any contradiction, and they will not be illustrated one by one here.

[0134] In the application examples, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. Terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the application examples can be understood according to the specific circumstances.

[0135] In the description of the application embodiments, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the application embodiments and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the application embodiments.

[0136] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the claimed invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0137] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A relay, characterized in that: It comprises four contact lead-out components electrically connected to external circuits respectively to form three conductive loops with the external circuits.

2. The relay according to claim 1, wherein: The four contact lead-out components are respectively a first contact lead-out component, a second contact lead-out component, a third contact lead-out component and a fourth contact lead-out component, and the three conductive circuits are respectively a first conductive circuit, a second conductive circuit and a third conductive circuit, wherein, when the relay is in a first state, the second contact lead-out component contacts the third contact lead-out component to form the first conductive circuit with the external circuit; when the relay is in a second state, the first contact lead-out component contacts the third contact lead-out component to form the second conductive circuit with the external circuit, and the second contact lead-out component contacts the fourth contact lead-out component to form the third conductive circuit with the external circuit.

3. The relay according to claim 2, characterized in that The first state is that the coil of the relay passes through one of a positive current and a negative current, and the second state is that the coil of the relay passes through the other of a positive current and a negative current.

4. The relay according to claim 2, characterized in that The first state is one of the coil of the relay being energized and de-energized, and the second state is the other of the coil of the relay being energized and de-energized.

5. The relay according to claim 2, characterized in that The adjacent contact lead-out components are provided with corresponding contacts on the sides facing each other.

6. The relay according to claim 2, characterized in that The relay has different numbers of conductive loops when in the first state and the second state, respectively, so as to adjust the output voltage of the external circuit.

7. The relay according to claim 2, characterized in that The second contact lead-out component and the third contact lead-out component are located between the first contact lead-out component and the fourth contact lead-out component, and each of the second contact lead-out component and the third contact lead-out component is provided with contacts on both sides along the contact and separation direction of the second contact lead-out component and the third contact lead-out component.

8. The relay according to any one of claims 2 to 7, characterized in that: Also includes: The push rod is connected to the second contact lead-out component and the third contact lead-out component, and is used to drive the second contact lead-out component and the third contact lead-out component to move.

9. The relay according to claim 8, characterized in that There are two push rods, which are respectively connected to the second contact lead-out assembly and the third contact lead-out assembly. The two push rods reciprocate along the movement direction of the push rods, and the movement directions of the two push rods are opposite. Along the moving direction of the push rod, the first contact lead-out component, the third contact lead-out component, the second contact lead-out component and the fourth contact lead-out component are arranged in sequence.

10. The relay according to claim 8, characterized in that The second contact lead-out assembly and the third contact lead-out assembly respectively include a first lead-out piece, a first movable contact, a first static contact, and a first movable spring piece. One end of the first movable spring piece in the longitudinal direction is connected to the first lead-out piece, and the other end of the first movable spring piece in the longitudinal direction is provided with the first movable contact and connected to the push rod. The first static contact is connected to the first lead-out piece. The first contact lead-out component and the fourth contact lead-out component each include a second lead-out piece and a second static contact, and the second static contact is connected to the second lead-out piece; When the relay is in the first state, the corresponding first static contacts in the second contact lead-out component and the third contact lead-out component are in contact with the first moving contact; when the relay is in the second state, the first moving contact of the third contact lead-out component is in contact with the second static contact of the first contact lead-out component, and the first moving contact of the second contact lead-out component is in contact with the second static contact of the fourth contact lead-out component.

11. The relay according to claim 10, characterized in that The first contact lead-out assembly and the fourth contact lead-out assembly further include a second movable spring and a second movable contact, one end of the second movable spring in the longitudinal direction is connected to the second lead-out piece, and the other end of the second movable spring in the longitudinal direction is provided with the second movable contact; the push rod is also connected to the two second movable springs; When the relay is in the second state, the first static contact of the third contact lead-out component contacts the second moving contact of the first contact lead-out component, and the first static contact of the second contact lead-out component contacts the second moving contact of the fourth contact lead-out component.

12. The relay according to claim 11, wherein: Along the moving direction of the push rod, the two second movable reeds and the two first movable reeds are arranged alternately.

13. The relay according to claim 8, wherein: The relay further includes a magnetic circuit portion, and the number of the push rods is two, and the two push rods are respectively connected to the second contact lead-out component and the third contact lead-out component; The two push rods are driven by one magnetic circuit part, and then the two push rods simultaneously drive the second contact lead-out component and the third contact lead-out component to move.

14. The relay according to any one of claims 2 to 7, characterized in that: Also includes: The push rod is connected to the third contact lead-out component and the fourth contact lead-out component, and is used to drive the third contact lead-out component and the fourth contact lead-out component to move.

15. The relay according to claim 14, characterized in that The number of the push rod is one; The first contact lead-out component, the third contact lead-out component, the second contact lead-out component, and the fourth contact lead-out component are arranged in sequence along the moving direction of the push rod.

16. The relay according to claim 14, wherein: The third contact lead-out assembly and the fourth contact lead-out assembly each include a third lead-out piece, a third movable contact, and a third movable spring piece, wherein one end of the third movable spring piece in the length direction is connected to the third lead-out piece, and the other end of the third movable spring piece in the length direction is provided with the third movable contact and is connected to the push rod; The first contact lead-out component and the second contact lead-out component both include a fourth lead-out piece and a third static contact, and the third static contact is connected to the fourth lead-out piece; When the relay is in the first state, the third moving contact of the third contact lead-out component contacts the third static contact of the second contact lead-out component; when the relay is in the second state, the third moving contact of the third contact lead-out component contacts the third static contact of the first contact lead-out component, and the third moving contact of the fourth contact lead-out component contacts the third static contact of the second contact lead-out component.

17. The relay according to claim 14, wherein: The third contact lead-out assembly and the fourth contact lead-out assembly each include a third lead-out piece, a third movable contact, and a third movable spring piece, wherein one end of the third movable spring piece in the length direction is connected to the third lead-out piece, and the other end of the third movable spring piece in the length direction is provided with the third movable contact and is connected to the push rod; Wherein, a third movable spring is provided on both sides of the third lead-out piece of the third contact lead-out component in the thickness direction, and a third movable spring is provided on one side of the third lead-out piece of the fourth contact lead-out component in the thickness direction; The first contact lead-out component and the second contact lead-out component both include a fourth lead-out piece and a third static contact, and the third static contact is connected to the fourth lead-out piece; When the relay is in the first state, the third movable contact on one of the third movable spring pieces of the third contact lead-out component contacts the third static contact of the second contact lead-out component; when the relay is in the second state, the third movable contact on the other third movable spring piece of the third contact lead-out component contacts the third static contact of the first contact lead-out component, and the third movable contact of the fourth contact lead-out component contacts the third static contact of the second contact lead-out component.

18. The relay according to claim 17, wherein: The orthographic projections of the third movable contact and the third lead-out piece of the third contact lead-out component on a target plane overlap; the orthographic projections of the third movable contact and the third lead-out piece of the fourth contact lead-out component on the target plane overlap; A first included angle is formed between each of the third movable spring pieces of the third contact lead-out assembly and the third lead-out piece, and a second included angle is formed between the third movable spring piece of the fourth contact lead-out assembly and the third lead-out piece; The target plane is perpendicular to the contact and separation directions of the third moving contact and the third static contact.

19. The relay according to claim 14, wherein: The number of the push rod is one, and the relay further includes: The magnetic circuit part, the push rod is driven by one of the magnetic circuit parts, and the push rod simultaneously drives the third contact lead-out component and the fourth contact lead-out component to move.

20. A device, characterized in that A relay comprising any one of claims 1 to 19.

21. The device according to claim 20, characterized in that The four contact lead-out components are respectively a first contact lead-out component, a second contact lead-out component, a third contact lead-out component and a fourth contact lead-out component, and the device further includes: two circuits, each of the circuits having an output terminal and an input terminal, The output end of one of the circuits is electrically connected to the second contact lead-out component of the relay, and the input end is electrically connected to the first contact lead-out component of the relay. The output end of another circuit is electrically connected to the fourth contact lead-out component of the relay, and the input end is electrically connected to the third contact lead-out component of the relay.

22. The device according to claim 21, characterized in that The circuit includes a power supply.

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