relay

Abstract

The application discloses a relay, comprising a contact cavity, a moving assembly, a breaking assembly and a stop structure. The contact cavity comprises a yoke plate, the moving assembly comprises a moving contact and a push rod member, and the push rod member comprises a contact support with a deformation part. The breaking assembly is configured to release an impact object in response to an excitation signal, the impact object being used to apply a force to the contact support in a direction away from a static contact, so that the deformation part is deformed and the distance between the moving contact and the static contact is enlarged; the breaking assembly is in an unexcited state, the push rod member is movable between a first position and a second position; when the breaking assembly is in the unexcited state and the push rod member moves from the first position to the second position, the stop structure can stop the push rod member at the second position; and when the breaking assembly is in an excited state and the push rod member moves from the first position to the second position, the stop structure releases the push rod member to enlarge the distance between the moving contact and the static contact.

Description

Technical Field

[0001] This application relates to the field of electrical control device technology, and more specifically, to a relay. Background Technology

[0002] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit), and is commonly used in automatic control circuits. Essentially, a relay is an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays a role in automatic adjustment, safety protection, and circuit switching in circuits.

[0003] When an abnormal overload such as overcurrent occurs in the energized circuit, the relay is required to disconnect the circuit, thereby cutting off the overload current and providing safety protection. However, when the load to be disconnected (high voltage, high current) is very large, an electric arc will be generated between the moving and stationary contacts of the relay, which is not conducive to achieving disconnection. Utility Model Content

[0004] This application provides a relay to improve the problem in related technologies where arcing between moving and stationary contacts hinders disconnection.

[0005] The relay in this application embodiment includes:

[0006] A contact cavity is provided with a stationary contact element, the contact cavity including a yoke plate;

[0007] A moving component includes a moving contact and a push rod component, the push rod component being movable relative to the yoke plate, the push rod component including a contact bracket with a deformable portion, the moving contact being installed within the contact bracket, and the moving contact being used to contact or separate from the stationary contact.

[0008] A disconnecting assembly includes an impactor configured to release the impactor in response to an excitation signal. The impactor applies a force to the contact support away from the stationary contact, causing the push rod member to move the moving contact and deforming the deformable portion to increase the distance between the moving and stationary contacts. In an unexcited state, the push rod member is movable between a first position near the stationary contact and a second position away from the stationary contact.

[0009] A stop structure is provided on at least one of the yoke plate and the push rod member. The stop structure is configured to: stop the push rod member at the second position when the disconnecting component is in an unactivated state and the push rod member moves from the first position to the second position; and release the push rod member when the disconnecting component is in an activated state and the push rod member moves from the first position to the second position, so that the push rod member continues to move away from the stationary contact member to increase the distance between the moving contact member and the stationary contact member.

[0010] According to some embodiments of this application, the yoke plate has a through hole, and the push rod member is movably inserted through the through hole.

[0011] According to some embodiments of this application, a metal cover is connected to the side surface of the yoke plate facing away from the static contact member. The metal cover and the yoke plate form a driving chamber that communicates with the through hole. A moving iron core connected to the push rod member is provided in the driving chamber.

[0012] When the moving iron core comes into contact with the bottom of the metal cover, the contact support is subjected to the force of the impacting object, and the deformable part can deform.

[0013] According to some embodiments of this application, a coil assembly is also sleeved on the outer periphery of the metal cover, and the coil assembly is electromagnetically coupled to the moving iron core.

[0014] According to some embodiments of this application, the contact support includes two side walls and a top wall. The two side walls are respectively located on both sides of the moving contact in the width direction. The top wall is located on the side of the moving contact facing the stationary contact and is connected to the two side walls. The top wall can contact the moving contact. The surface of the top wall facing away from the moving contact is used to withstand the impact. The side walls and / or the top wall are provided with the deformation portion.

[0015] According to some embodiments of this application, the sidewall is provided with a bent portion, which is recessed into the contact support or protrudes outward from the contact support, and at least a portion of the bent portion constitutes the deformable portion.

[0016] According to some embodiments of this application, the contact support further includes a bottom wall located on the side of the moving contact opposite to the stationary contact and connected to the ends of the two side walls away from the top wall; the portion of the side wall near the bottom wall constitutes the bent portion.

[0017] According to some embodiments of this application, the stop structure includes a stop portion, which is disposed on one of the yoke plate and the push rod member;

[0018] When the disconnecting component is in an unactivated state and the push rod member moves from the first position to the second position, the stop portion can contact the other of the yoke plate and the push rod member to stop the push rod member at the second position; and when the disconnecting component is in an activated state and the push rod member moves from the first position to the second position, the stop portion can impact the other of the yoke plate and the push rod member, and when the impact force is greater than or equal to a threshold, the stop portion breaks to allow the push rod member to continue moving away from the stationary contact member.

[0019] According to some embodiments of this application, the push rod member is provided with the stop portion, which is located on the side of the yoke plate facing the stationary contact member.

[0020] According to some embodiments of this application, the push rod component includes a push rod and a covering portion, the covering portion covering the outer peripheral surface of the push rod, and the stop portion being disposed on the outer periphery of the covering portion.

[0021] According to some embodiments of this application, the stop portion and the covering portion are an integral structure.

[0022] According to some embodiments of this application, the stop portion includes a ring portion and a plurality of spokes. The ring portion is sleeved on the outer periphery of the push rod member. One end of the plurality of spokes is connected to the inner ring surface of the ring portion, and the other end is connected to the outer peripheral surface of the push rod member. The plurality of spokes are arranged circumferentially along the push rod member, and there is a gap between two adjacent spokes.

[0023] According to some embodiments of this application, each spoke has a large end and a small end, the large end being larger than the small end, the large end being connected to the inner ring surface of the ring portion, and the small end being connected to the push rod member.

[0024] According to some embodiments of this application, each of the spokes has a groove near the push rod member, the opening of the groove facing away from the stationary contact member.

[0025] According to some embodiments of this application, the relay further includes:

[0026] A retainer, connected to one of the yoke plate and the push rod member, is configured such that when the disconnecting assembly is in the activated state, the retainer can engage with the other of the yoke plate and the push rod member to hold the push rod member in a predetermined position.

[0027] According to some embodiments of this application, the second position is located between the first position and the predetermined position.

[0028] According to some embodiments of this application, the other of the yoke plate and the push rod member is provided with a slot, and when the retainer holds the push rod member in the predetermined position, the retainer is engaged in the slot.

[0029] According to some embodiments of this application, the impactor is a solid, and one of the impactor and the contact support is provided with a protrusion and the other is provided with a receiving portion; when the impactor strikes the contact support, at least a portion of the protrusion can be inserted into the receiving portion.

[0030] According to some embodiments of this application, the receiving portion is a groove or a through hole.

[0031] According to some embodiments of this application, the impactor is a gas or a solid.

[0032] According to some embodiments of this application, the disconnection component includes an exciter configured to release gas in response to an excitation signal.

[0033] According to some embodiments of this application, the push rod component further includes an insulating seat and a push rod, the insulating seat being connected to one end of the push rod, and the contact bracket being mounted on the insulating seat.

[0034] According to some embodiments of this application, the contact cavity includes a ceramic cover, and the static contact and the disconnect assembly are mounted on top of the ceramic cover.

[0035] According to some embodiments of this application, the static contact includes at least two leads, which are mounted on the top of the ceramic cover.

[0036] According to some embodiments of this application, the disconnect component is mounted on the contact cavity.

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

[0038] In the relay of this application embodiment, the stop structure can stop and release the push rod member. In addition, the contact support also has a deformation part that can deform. After the stop structure releases the push rod member, the push rod member can continue to move away from the stationary contact to increase the contact gap between the moving contact and the stationary contact. After the deformation part deforms, it can also increase the contact gap between the moving contact and the stationary contact. Under the combined action of the stop structure and the deformation part, the contact gap between the moving contact and the stationary contact can be widened. The larger contact gap is conducive to arc extinguishing and achieving the purpose of rapid disconnection.

[0039] Furthermore, the stop is designed as a ring with multiple spokes. On the one hand, this ensures that the stop can reliably cooperate with the yoke plate stop when the relay is normally disconnected. On the other hand, since there is a gap between adjacent spokes, each spoke is more likely to break when the stop hits the yoke plate, allowing the push rod component to drive the moving contact to continue moving away from the stationary contact, thus widening the contact gap.

[0040] Furthermore, the small end of each spoke is connected to the push rod component, which makes the connection area between the spoke and the push rod component weaker. When the stop part impacts the yoke plate, the small end of the spoke is more likely to break.

[0041] Furthermore, by creating an opening in the part of the spoke near the pusher member with a groove facing away from the stationary contact member, the stress on the part of the spoke near the pusher member is more concentrated. When the stop is hit by the yoke plate, the spoke is more likely to crack and break at the groove.

[0042] Furthermore, the sidewall is provided with a bend, and the flexibility of the sidewall at the bend is greater than that at other locations. Therefore, when an impactor hits the contact support, the bend of the sidewall is more likely to deform, which increases the speed at which the deformation part deforms, thereby achieving the purpose of timely separation.

[0043] Furthermore, the retainer can hold the push rod component in a predetermined position where the contact gap between the moving and stationary contacts is sufficiently large to prevent arcing or reignition between the moving and stationary contacts, thereby avoiding short circuits. In addition, since the retainer is connected to one of the yoke plate and the push rod component, and can also engage with the other of the yoke plate and the push rod component, the retainer is not connected to the moving contact. Therefore, even if the moving contact tilts or rotates during disconnection, the retainer can maintain a large contact gap between the moving and stationary contacts, preventing the retainer from failing due to tilting of the moving contact.

[0044] Furthermore, at least a portion of the protrusion can be inserted into the receiving portion. When the impactor strikes the contact support, the protrusion and the receiving portion engage in a limiting fit, preventing the impactor from shifting position and ensuring that most of the impactor's kinetic energy is transferred to the contact support. This increases the contact support's moving speed and improves the timeliness of the breaking action. Additionally, if the contact support is tilted before impacting the contact, the protrusion's insertion into the receiving portion allows the impactor to apply its impact force to the contact support, ensuring effective breaking. Moreover, when the impactor has a protrusion and the contact support has a receiving portion, the protrusion increases the overall weight of the impactor, thereby increasing its impact force and further improving the timeliness of the breaking action. Attached Figure Description

[0045] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0046] Figure 1 This is a top view of a relay according to an embodiment of this application.

[0047] Figure 2 It is along Figure 1 The diagram shows the result after being cut along section line AA, where the moving contact and the stationary contact are separated.

[0048] Figure 3 It is along Figure 1 The diagram shows the result after being cut along section line AA, where the moving contact and the stationary contact are in contact.

[0049] Figure 4 It is along Figure 1 The diagram shows the result after being cut along the AA section line, where the exciter is activated and the impactor has just come into contact with the moving component.

[0050] Figure 5 It is along Figure 1 The diagram shows the result after being cut along section line AA, where the stop part is in contact with the yoke plate.

[0051] Figure 6 It is along Figure 1 The diagram shows the result after being cut by the AA section line, where the stop part breaks after hitting the yoke plate.

[0052] Figure 7 This is a schematic diagram of a push rod component with a stop.

[0053] Figure 8 It is along Figure 7 The sectional view after cutting along the BB section line.

[0054] Figure 9 It is along Figure 1 The cross-sectional view after being cut along the CC section line shows that the deformed part of the contact support has not yet deformed.

[0055] Figure 10 yes Figure 1 The cross-sectional view after being cut by the CC section line shows the deformation of the contact support.

[0056] Figure 11 It is along Figure 1The diagram shows the result after being cut along the AA section line, with the retainer inserted into the slot.

[0057] Figure 12 yes Figure 11 A magnified view of the area at point X1.

[0058] Figure 13 yes Figure 2 A magnified view of the area at X2 in the middle.

[0059] The reference numerals in the attached figures are explained as follows:

[0060] 100. Contact cavity; 101. Contact chamber; 103. Drive chamber; 110. Yoke plate; 111. Through hole; 120. Insulating cover; 121. Ceramic cover; 122. Frame plate; 123. Assembly hole; 130. Metal cover;

[0061] 210. Static contact; 211. Lead-out component; 220. Moving assembly; 221. Moving contact; 222. Push rod component; 2221. Push rod; 2222. Contact support; 2222a. Side wall; 2222b. Top wall; 2222c. Bottom wall; 2223. Insulating seat; 223. Receiving part; 224. Covering part; 225. Stop part; 225a. Stop structure; 2251. Groove; 2252. Ring part; 2253. Spoke; 2253a. Small end; 2253b. Large end; 2254. Gap; 226. Elastic element; 227. Bending part; 228. Deformation part;

[0062] 300. Disconnecting component; 310. Actuator; 320. Impactor; 324. Protrusion; 330. Connector;

[0063] 500. Magnetic circuit section; 510. Coil assembly; 520. Moving iron core;

[0064] 610. Retaining element; 620. Slot. Detailed Implementation

[0065] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0066] It is understood that the terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0067] For ease of explanation, the terms "X-axis direction," "Y-axis direction," and "Z-axis direction" are used in the specific embodiments of this application. These terms simply refer to a feature having one of these directions being perpendicular to a feature having the other direction; they do not require implementation according to the "X-axis direction," "Y-axis direction," and "Z-axis direction" described in the embodiments. In the embodiments, the X-axis direction, Y-axis direction, and Z-axis direction are mutually perpendicular. Specifically, the X-axis direction can be divided into left and right (the direction indicated by the arrow in the X-axis direction is left, and the opposite direction is right); the Y-axis direction can be divided into front and back (the direction indicated by the arrow in the Y-axis direction is front, and the opposite direction is back); and the Z-axis direction can be divided into up and down (the direction indicated by the arrow in the Z-axis direction is up, and the opposite direction is down).

[0068] Unless otherwise specified, in the claims and description, the terms “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “rear,” “left,” “right,” etc., indicate the orientation or positional relationship based on the orientation and positional relationship shown in the drawings, and are only for the purpose of simplifying the description, and do not imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation.

[0069] like Figures 1 to 3 As shown, the relay of this embodiment includes a contact cavity 100, a moving assembly 220, and a magnetic circuit portion 500. The contact cavity 100 has a contact chamber 101, and a stationary contact 210 is mounted on the contact cavity 100. A portion of the stationary contact 210 extends into the contact chamber 101. The moving assembly 220 includes a moving contact 221 and a push rod member 222, with the moving contact 221 mounted on the push rod member 222. The moving contact 221 is located within the contact chamber 101. The push rod member 222 is movable along the Z-axis, and a portion of the push rod member 222 is located within the contact chamber 101 to move the moving contact 221, causing the moving contact 221 to contact or separate from the stationary contact 210. The magnetic circuit portion 500 includes a coil assembly 510 and a moving iron core 520, with the moving iron core 520 connected to the push rod member 222, and the coil assembly 510 and the moving iron core 520 electromagnetically coupled. The coil assembly 510 is configured to drive the moving iron core 520 to move along the Z-axis in response to an input signal, thereby causing the moving iron core 520 to move the push rod member 222.

[0070] The term "contact" refers to the direct or indirect contact between the moving contact 221 and the stationary contact 210, allowing current to flow between them; the term "separation" refers to the disconnection between the moving contact 221 and the stationary contact 210, preventing current from flowing between them.

[0071] In one exemplary embodiment, such as Figure 2 As shown, when the moving contact 221 and the stationary contact 210 are separated, the relay is in the open state; as Figure 3 As shown, when the moving contact 221 and the stationary contact 210 are in contact, the relay is in a closed state.

[0072] The stationary contact 210 may include at least two leads 211, each lead 211 being mounted on the contact cavity 100, with a portion of each lead 211 extending into the contact cavity 101 and the other portion extending out of the outer surface of the contact cavity 100. The portion of the lead 211 extending into the contact cavity 101 is capable of contacting or separating from the moving contact 221.

[0073] As an example, the static contact 210 includes two leads 211 arranged along the X-axis, and the two ends of the dynamic contact 221 along the X-axis are used to contact or separate from the two leads 211 respectively.

[0074] Please continue reading. Figure 2 and Figure 3 As shown, the contact cavity 100 includes a yoke plate 110 and an insulating cover 120. The insulating cover 120 covers one side surface of the yoke plate 110 in the thickness direction, and a stationary contact member 210 is mounted on the insulating cover 120. The insulating cover 120 and the yoke plate 110 form a contact cavity 101, and a movable contact member 221 is located inside the contact cavity 101. The yoke plate 110 has a through hole 111 that penetrates the yoke plate 110 along the Z-axis and communicates with the contact cavity 101. A push rod member 222 is movably inserted into the through hole 111.

[0075] The relay also includes a metal cover 130, which covers the side of the yoke plate 110 facing away from the insulating cover 120. The metal cover 130 and the yoke plate 110 form a drive chamber 103, which communicates with the contact chamber 101 through a through hole 111. The moving iron core 520 is movably located within the drive chamber 103. A coil assembly 510 is fitted around the outer periphery of the metal cover 130.

[0076] The insulating cover 120 includes a ceramic cover 121 and a frame 122. The ceramic cover 121 is made of ceramic, and the frame 122 is a ring structure made of metal. The ceramic cover 121 is connected to the yoke plate 110 through the frame 122. A static contact 210 is installed on the top of the ceramic cover 121.

[0077] like Figure 2 and Figure 3 As shown, the relay in this embodiment of the application further includes a disconnection component 300. The disconnection component 300 is mounted on the top of the ceramic cover 121 and is configured to release an impactor 320 in response to an excitation signal. The impactor 320 is used to apply a force to the moving component 220 away from the stationary contact 210, so that the push rod component 222 moves the moving contact 221 downward in the Z-axis direction, thereby causing the moving contact 221 to disconnect from the stationary contact 210.

[0078] In this embodiment, the relay is provided with a disconnect component 300. When the excitation signal occurs, the disconnect component 300 can release the impactor 320. The impactor 320 acts on the moving component 220 to separate the moving contact 221 and the stationary contact 210.

[0079] In one embodiment, at least a portion of the disconnect component 300 is located within the contact chamber 101, but this is not a limitation.

[0080] In one embodiment, the impactor 320 can be a solid or a gas.

[0081] like Figure 2 and Figure 3 As shown, the disconnecting component 300 also includes an exciter 310, which is configured to release an impactor 320 in response to an excitation signal. When the impactor 320 is a gas, the exciter 310 is activated and releases the gas, applying gas pressure to the moving component 220 to cause the moving component 220 to move downward along the Z-axis. When the impactor 320 is a solid, the exciter 310 is activated and releases the gas, the gas pressure driving the impactor 320 to move, and the impactor 320 impacts the moving component 220, causing the moving component 220 to move downward along the Z-axis. Specifically, when the exciter 310 receives an excitation signal, the disconnecting component 300 is in an activated state; when the exciter 310 does not receive an excitation signal, the disconnecting component 300 is in an unactivated state.

[0082] It should be noted that when the impactor 320 is solid and the actuator 310 is not activated, the impactor 320 is fixed relative to the actuator 310, and in this case, the impactor 320 will not impact the moving component 220. For example, the disconnecting component 300 may also include a connector 330, which may be cylindrical and installed in the mounting hole 123 at the top of the ceramic cover 121. At least a portion of the impactor 320 is located within the connector 330, and the impactor 320 is connected to the connector 330 via a releasable connection structure. At least a portion of the actuator 310 is located within the connector 330. When the actuator 310 is activated, the gas pressure released by the actuator 310 acts on the impactor 320, causing the releasable connection structure to release the impactor 320, allowing the impactor 320 to impact the moving component 220.

[0083] In one embodiment, when the impactor 320 is solid, the impactor 320 is made of an insulating material, such as plastic, ceramic, etc.

[0084] The "excitation signal" is generated when the threshold current (i.e., a large short-circuit current) passes through the moving contact 221.

[0085] For monitoring the threshold current, a current sensor can be used to monitor the current value of the moving contact 221, but this is not a limitation, as long as an excitation signal can be generated by detecting the threshold current.

[0086] In one embodiment, the exciter 310 may include gunpowder. When the threshold current passes through the moving contact 221, the gunpowder is ignited and generates a large amount of gas. The gas forms a driving force that can drive the impactor 320 to move, so that the impactor 320 hits the moving component 220, thereby separating the moving contact 221 from the stationary contact 210.

[0087] In one embodiment, the exciter 310 may be an electric detonator or an electric detonating tube, but is not limited thereto.

[0088] In one embodiment, when the disconnect component 300 is in an unactivated state (i.e., the relay is in a normal operating state), the push rod component 222 can move between a first position close to the stationary contact 210 and a second position away from the stationary contact 210.

[0089] In one example embodiment, when the push rod member 222 is in the first position, the moving contact 221 is in contact with the stationary contact 210, and the push rod member 222 completes overtravel; when the push rod member 222 is in the second position, the moving contact 221 is separated from the stationary contact 210, and the push rod member 222 is in the lower limit position when the relay is normally disconnected.

[0090] like Figure 2 and Figure 3As shown, the push rod component 222 includes a push rod 2221, a contact support 2222, and an insulating seat 2223. The push rod 2221 is movably inserted into the through hole 111 of the yoke plate 110 along the Z-axis. The insulating seat 2223 is connected to one end of the push rod 2221 and is located within the contact chamber 101. The other end of the push rod 2221 is connected to the moving iron core 520. The contact support 2222 is mounted on the insulating seat 2223, and the moving contact 221 is located within the contact support 2222.

[0091] The moving component 220 also includes an elastic element 226 connected between the moving contact 221 and the contact support 2222 for applying an elastic force to the moving contact 221 toward the stationary contact 210 to provide contact pressure.

[0092] In an exemplary embodiment, the elastic element 226 is a spring, one end of which abuts against the side of the moving contact 221 facing away from the stationary contact 210, and the other end abuts against the insulating seat 2223.

[0093] The push rod component 222 also includes a covering portion 224, which covers the outer peripheral surface of the push rod 2221.

[0094] In one embodiment, the covering portion 224 is connected to the insulating base 2223 and is an integral structure; in another embodiment, the covering portion 224 and the insulating base 2223 may also be spaced apart in the Z-axis direction.

[0095] When the covering part 224 and the insulating seat 2223 are an integral structure, the covering part 224 and the insulating seat 2223 can be made of plastic and are connected to the push rod 2221 by injection molding.

[0096] like Figure 2 and Figure 3 As shown, the relay also includes a stop structure 225a, which is disposed on at least one of the yoke plate 110 and the push rod member 222. For example, the yoke plate 110 is provided with the stop structure 225a; or, the push rod member 222 is provided with the stop structure 225a; or, a portion of the stop structure 225a is disposed on the yoke plate 110 and another portion is disposed on the push rod member 222.

[0097] The stop structure 225a is configured such that when the disconnecting component 300 is in an unactivated state and the push rod member 222 moves from the first position to the second position, the stop structure 225a can stop the push rod member 222 in the second position; and when the disconnecting component 300 is in an activated state and the push rod member 222 moves from the first position to the second position, the stop structure 225a releases the push rod member 222 so that the push rod member 222 continues to move away from the stationary contact member 210, thereby increasing the distance between the moving contact member 221 and the stationary contact member 210.

[0098] In one embodiment, the stop structure 225a includes a stop portion 225, one of the yoke plate 110 and the push rod member 222 having a stop portion 225. The stop portion 225 is configured such that: when the disconnecting component 300 is in an unactivated state and the push rod member 222 moves from a first position to a second position, the stop portion 225 can contact the other of the yoke plate 110 and the push rod member 222 to stop the push rod member 222 in the second position; and when the disconnecting component 300 is in an activated state and the push rod member 222 moves from the first position to the second position, and the stop portion 225 impacts the other of the yoke plate 110 and the push rod member 222, and when the impact force is greater than or equal to a threshold, the stop portion 225 breaks to allow the push rod member 222 to continue moving away from the stationary contact member 210 with the moving contact member 221 to increase the distance between the moving contact member 221 and the stationary contact member 210.

[0099] In one embodiment, the push rod member 222 is provided with a stop portion 225, which is located on the side of the yoke plate 110 facing the stationary contact member 210. When the moving component 220 is subjected to the force of the impactor 320 and moves downward along the Z-axis, the push rod member 222 can move together with the stop portion 225. When the impact force of the stop portion 225 hitting the yoke plate 110 is greater than or equal to a threshold, the stop portion 225 breaks.

[0100] In a modified embodiment, when the stop structure 225a includes a stop portion 225, the stop portion 225 may also be provided on the yoke plate 110.

[0101] Next, taking the push rod component 222 with a stop part 225 as an example, and combining it with... Figures 2 to 6 The process of the stop 225 breaking under stress is explained in detail.

[0102] In one exemplary embodiment, the stop portion 225 is provided on the outer periphery of the covering portion 224.

[0103] The stop portion 225 is located on the outer periphery of the covering portion 224. It can be that the stop portion 225 and the covering portion 224 are an integral structure, with the stop portion 225 protruding from the outer periphery of the covering portion 224; or, the stop portion 225 and the covering portion 224 are separate structures, with the stop portion 225 connected to the covering portion 224.

[0104] like Figure 2 As shown, when the relay is normally disconnected, although there is an impact force between the yoke plate 110 and the stop part 225, this impact force is less than the threshold value, so the stop part 225 will not break. At this time, the yoke plate 110 supports the stop part 225. Here, "normal disconnection" means that the relay's disconnecting current / voltage is less than the rated value.

[0105] like Figure 3 As shown, when the relay is closed, the push rod member 222 moves upward along the Z-axis along with the stop part 225. When the relay is fully closed, the stop part 225 is located above the yoke plate 110, and the stop part 225 is disengaged from the yoke plate 110. Here, "fully closed" means that the moving contact 221 is in contact with the stationary contact 210, and the push rod member 222 has completed its overtravel.

[0106] like Figure 4 As shown, when an abnormal situation occurs, such as a short circuit current, an excitation signal is generated. At this time, the disconnect component 300 releases the impactor 320, and the impactor 320 strikes the contact support 2222. Figure 4 The state shown is that the impactor 320 has just come into contact with the contact support 2222, and at this time the moving contact 221 and the stationary contact 210 are still in contact.

[0107] like Figure 5 As shown, the push rod component 222 moves downward along the Z-axis under the action of the impactor 320. During the movement of the push rod component 222, the stop part 225 moves downward along the Z-axis. Figure 5 The state shown is such that the stop 225 is just in contact with the yoke plate 110.

[0108] like Figure 6 As shown, when the impact force of the stop 225 striking the yoke plate 110 is greater than or equal to the threshold, the stop 225 breaks. Since the stop 225 no longer provides a stopping function between the push rod member 222 and the yoke plate 110, the push rod member 222 will continue to move downwards until the moving iron core 520 contacts the bottom of the metal cover 130. During the downward movement of the push rod member 222, the push rod member 222 will also drive the moving contact member 221 to move downwards as well. When the moving iron core 520 is in contact with the bottom of the metal cover 130, the contact gap between the moving contact member 221 and the stationary contact member 210 is at its maximum.

[0109] It should be noted that, for the sake of simplifying the view, [the following text is omitted]. Figure 6 The stop section 225 was broken in the middle.

[0110] like Figure 7 As shown, the stop portion 225 includes a ring portion 2252 and a plurality of spokes 2253. The ring portion 2252 is sleeved on the outer periphery of the covering portion 224 of the push rod member 222. One end of the plurality of spokes 2253 is connected to the inner ring surface of the ring portion 2252, and the other end is connected to the outer periphery of the covering portion 224 of the push rod member 222. The plurality of spokes 2253 are arranged along the circumference of the push rod member 222, and there is a gap 2254 between adjacent spokes 2253.

[0111] In this embodiment, the stop portion 225 is designed as a ring portion 2252 and a plurality of spokes 2253. On the one hand, this ensures that the stop portion 225 can reliably cooperate with the yoke plate 110 when the relay is normally disconnected. On the other hand, since there is a gap 2254 between adjacent spokes 2253, each spoke 2253 is more likely to break when the stop portion 225 impacts the yoke plate 110, so as to allow the push rod member 222 to drive the moving contact member 221 to continue to move away from the stationary contact member 210, thereby widening the contact gap.

[0112] The ring portion 2252 can be a circular ring, a rectangular ring, an elliptical ring, etc., and this application does not make any special limitation on it.

[0113] It is understandable that the spoke 2253 may extend radially along the push rod member 222 or may not extend radially along the push rod member 222. For example, the extension path of the spoke 2253 may be a broken line, a curve, etc.

[0114] like Figure 7 As shown, each spoke 2253 has a large end 2253b and a small end 2253a. The size of the large end 2253b is larger than that of the small end 2253a. The large end 2253b is connected to the inner ring surface of the ring portion 2252, and the small end 2253a is connected to the push rod member 222.

[0115] In this embodiment, the small end 2253a of each spoke 2253 is connected to the push rod member 222. This makes the connection area between the spoke 2253 and the push rod member 222 weaker. When the stop 225 impacts the yoke plate 110, the small end 2253a of the spoke 2253 is more likely to break.

[0116] It is understandable that the “dimensions” of the large end 2253b and the small end 2253a mentioned above can be the circumferential dimensions along the push rod member 222 or the dimensions along the Z-axis.

[0117] like Figure 8As shown, each spoke 2253 has a groove 2251 near the push rod member 222, and the opening of the groove 2251 faces away from the stationary contact member 210.

[0118] In this embodiment, by opening a groove 2251 with an opening facing away from the stationary contact member 210 in the part of the spoke 2253 near the push rod member 222, the stress in the part of the spoke 2253 near the push rod member 222 is more concentrated. When the stop part 225 is hit by the yoke plate 110, the spoke 2253 is more likely to crack and break at the groove 2251.

[0119] It should be noted that the stop part 225 is not limited to using... Figure 7 The structure shown is not limited to the method by which the stop 225 releases the push rod member 222, nor is it limited to breaking. For example, when the disconnecting component 300 is in an unactivated state and the push rod member 222 is stopped in the second position by the stop 225, the stop 225 can be interference-fitted with the through hole 111 of the yoke plate 110. Since the kinetic energy of the push rod member 222 moving downward is small when the relay is normally disconnected, the resistance brought by the interference fit between the stop 225 and the through hole 111 can stop the push rod member 222 in the second position. However, when the disconnecting component 300 is in an activated state and the push rod member 222 moves from the first position to the second position, since the kinetic energy of the push rod member 222 increases after being impacted by an impactor, the push rod member 222 can overcome the resistance brought by the interference fit between the stop 225 and the through hole 111 and continue to move away from the stationary contact member 210 when it moves to the second position.

[0120] like Figure 9 and Figure 10 As shown, the contact support 2222 has a deformation part 228. When the contact support 2222 is subjected to the force of the impactor 320, the deformation part 228 can deform to increase the distance between the moving contact 221 and the stationary contact 210.

[0121] It should be noted that the deformable part 228 in this application cannot return to its original state after deformation.

[0122] In this embodiment, based on the provision of a stop 225 in one of the yoke plate 110 and push rod member 222, the contact support 2222 also has a deformation part 228 capable of deformation. After the stop 225 breaks, the push rod member 222 can continue to move away from the stationary contact member 210 to increase the contact gap between the moving contact member 221 and the stationary contact member 210. After the deformation part 228 deforms, it can also increase the contact gap between the moving contact member 221 and the stationary contact member 210. Under the combined action of the stop 225 and the deformation part 228, the contact gap between the moving contact member 221 and the stationary contact member 210 can be increased. The larger contact gap is beneficial for arc extinguishing and achieving the purpose of rapid disconnection.

[0123] Please continue reading. Figure 9 and Figure 10 The contact support 2222 includes two side walls 2222a, a top wall 2222b, and a bottom wall 2222c. The two side walls 2222a are located on opposite sides of the moving contact 221 in the width direction (Y-axis direction). The top wall 2222b is located on the side of the moving contact 221 facing the stationary contact 210 and is connected to the two side walls 2222a. Under the elastic force of the elastic member 226, the moving contact 221 can contact the top wall 2222a. The bottom wall 2222c is located on the side of the moving contact 221 away from the stationary contact 210 and is connected to the end of the two side walls 2222a away from the top wall 2222b. The bottom wall 2222c is also fixedly connected to the insulating base 2223.

[0124] In an exemplary embodiment, the surface of the top wall 2222b facing away from the moving contact 221 is used to withstand the impactor 320, that is, when the impactor 320 impacts the contact support 2222, the impactor 320 impacts the top wall 2222b.

[0125] The sidewall 2222a and / or the topwall 2222b are provided with deformable parts 228.

[0126] In one embodiment, the side wall 2222a is provided with a deformation portion 228, while the top wall 2222b is not provided with a deformation portion 228; in another embodiment, the side wall 2222a is not provided with a deformation portion 228, while the top wall 2222b is provided with a deformation portion 228; in yet another embodiment, the side wall 2222a and the top wall 2222b are each provided with a deformation portion 228.

[0127] Next, we will explain how the contact gap between the moving contact 221 and the stationary contact 210 is widened when the side wall 2222a is provided with a deformation part 228. When the impactor 320 hits the top wall 2222b, the deformation part 228 deforms, so the dimension of the side wall 2222a in the Z-axis direction decreases. During the process of the side wall 2222a decreasing in size, the side wall 2222a can pull the top wall 2222b downward. During the downward movement of the top wall 2222b, it can press the moving contact 221 to move away from the stationary contact 210, thereby widening the contact gap between the moving contact 221 and the stationary contact 210.

[0128] Next, we will explain how the contact gap between the moving contact 221 and the stationary contact 210 is widened when the top wall 2222b is provided with a deformation portion 228. The deformation portion 228 can be provided in the middle region of the top wall 2222b along the Y-axis. When the impactor 320 hits the top wall 2222b, the impactor 320 can directly act on the deformation portion 228. At this time, the deformation portion 228 deforms and protrudes downward. The process of the deformation portion 228 protruding can press the moving contact 221 to move away from the stationary contact 210, thereby widening the contact gap between the moving contact 221 and the stationary contact 210.

[0129] Next, combine Figure 9 and Figure 10 The following description will be based on the example of a deformable portion 228 provided in the side wall 2222a. The side wall 2222a is provided with a bent portion 227, which is recessed into the contact support 2222 or protrudes outward from the contact support 2222. At least a portion of the bent portion 227 constitutes the deformable portion 228.

[0130] In this embodiment, the side wall 2222a is provided with a bending portion 227. The side wall 2222a is more flexible at the bending portion 227 than at other locations. Therefore, when the impactor 320 hits the contact support 2222, the bending portion 227 of the side wall 2222a is more likely to deform, which increases the speed at which the deformation portion 228 deforms, thereby achieving the purpose of timely separation.

[0131] As an example, the portion of the sidewall 2222a near the bottom wall 2222c constitutes a bend 227.

[0132] Of course, in other embodiments, the bending portion 227 may also be provided in the middle region of the side wall 2222a along the Z-axis direction, or the bending portion 227 may be provided in the side wall 2222a near the top wall 2222b; or the side wall 2222a may have a hollow structure, and the area where the hollow structure is located is the deformation portion 228; or the side wall 2222a may be thin enough to deform under impact.

[0133] In one embodiment, after the moving iron core 520 contacts the bottom of the metal cover 130, the deformation portion 228 of the contact support 2222 begins to deform. Specifically, after the exciter 310 releases the impactor 320, the impactor 320 strikes the contact support 2222, causing the push rod member 222 to move downwards. The push rod member 222 drives the stop portion 225 to strike the yoke plate 110. After the stop portion 225 breaks, the push rod member 222 continues to move downwards until the moving iron core 520 contacts the bottom of the metal cover 130. The push rod member 222 can no longer move, but at this point, the kinetic energy of the impactor 320 is still relatively large, causing the deformation portion 228 of the contact support 2222 to begin to deform.

[0134] In another embodiment, the deformation portion 228 of the contact support 2222 deforms first, and then the moving iron core 520 contacts the bottom of the metal cover 130. Specifically, after the exciter 310 releases the impactor 320, the impactor 320 strikes the contact support 2222, at which point the deformation portion 228 of the contact support 2222 deforms. Then, the impactor 320 drives the push rod member 222 to move downwards. The push rod member 222 causes the stop portion 225 to strike the yoke plate 110. After the stop portion 225 breaks, the push rod member 222 continues to move downwards until the moving iron core 520 contacts the bottom of the metal cover 130.

[0135] In another embodiment, the deformable portion 228 of the contact support 2222 first undergoes partial deformation, then the moving iron core 520 contacts the bottom of the metal cover 130, and finally the deformable portion 228 of the contact support 2222 undergoes another partial deformation. Specifically, after the exciter 310 releases the impactor 320, the impactor 320 strikes the contact support 2222, at which point the deformable portion 228 of the contact support 2222 undergoes partial deformation. Then, the impactor 320 drives the push rod member 222 to move downwards, and the push rod member 222 causes the stop portion 225 to strike the yoke plate 110. After the stop portion 225 breaks, the push rod member 222 continues to move downwards until the moving iron core 520 contacts the bottom of the metal cover 130. The push rod member 222 can no longer move, but at this point the kinetic energy of the impactor 320 is still relatively large, causing the deformable portion 228 of the contact support 2222 to undergo another partial deformation.

[0136] like Figure 11 and Figure 12As shown, the relay in this embodiment further includes a retaining member 610, which is connected to one of the yoke plate 110 and the push rod member 222. The retaining member 610 is configured such that when the disconnecting assembly 300 is in the activated state, the retaining member 610 can cooperate with the other of the yoke plate 110 and the push rod member 222 to hold the push rod member 222 in a predetermined position, preventing the push rod member 222 from moving towards the stationary contact member 210. When the push rod member 222 is in the predetermined position, the contact gap between the moving contact member 221 and the stationary contact member 210 is sufficiently large, preventing arcing or reignition problems from occurring between the moving and stationary contacts.

[0137] In this embodiment, the retainer 610 can hold the push rod member 222 in a predetermined position. In this predetermined position, the contact gap between the moving contact 221 and the stationary contact 210 is large enough to avoid arcing or reignition between the moving and stationary contacts, thereby preventing short circuits. Furthermore, since the retainer 610 is connected to one of the yoke plate 110 and the push rod member 222, and can cooperate with the other of the yoke plate 110 and the push rod member 222, the retainer 610 is not connected to the moving contact 221. Therefore, even if the moving contact 221 tilts or rotates during the disconnection process, the retainer 610 can maintain the contact gap between the moving contact 221 and the stationary contact 210 at a large value, preventing the retainer 610 from failing due to tilting of the moving contact 221.

[0138] In one embodiment, the other of the yoke plate 110 and push rod member 222 is also provided with a slot 620, and when the retainer 610 holds the push rod member 222 in a predetermined position, the retainer 610 is engaged in the slot 620.

[0139] In this embodiment, the retainer 610 is disposed on the yoke plate 110, and the slot 620 is disposed on the covering portion 224 of the push rod member 222. The retainer 610 can be engaged into the slot 620 to hold the push rod member 222 in a predetermined position. Since the retainer 610 can be engaged into the slot 620, the retainer 610 and the slot 620 are matched to a certain extent to ensure the stability of the push rod member 222 in the predetermined position.

[0140] In one embodiment, the second position is located between the first position and the predetermined position. In this way, the retainer 610 can hold the push rod member 222 at a position further away from the stationary contact member 210, ensuring that the contact gap between the moving contact member 221 and the stationary contact member 210 is large enough to prevent arcing or reignition problems from occurring again at the moving and stationary contacts.

[0141] like Figure 13As shown, one of the impactor 320 and the contact support 2222 has a protrusion 324, and the other of the impactor 320 and the contact support 2222 has a receiving portion 223. When the impactor 320 impacts the contact support 2222, at least a portion of the protrusion 324 can be inserted into the receiving portion 223.

[0142] In this embodiment, at least a portion of the protrusion 324 can be inserted into the receiving portion 223. When the impactor 320 impacts the contact support 2222, the protrusion 324 and the receiving portion 223 engage in a limiting fit, preventing the impactor 320 from shifting position and ensuring that most of the impactor 320's kinetic energy is transferred to the contact support 2222. This increases the moving speed of the contact support 2222, improving the timeliness of the breaking action. Furthermore, if the contact support 2222 is tilted before the impactor 320 impacts it, the protrusion 324, being inserted into the receiving portion 223, allows the impactor 320 to apply its impact force to the contact support 2222, ensuring the breaking effect. Additionally, when the impactor 320 has the protrusion 324 and the contact support 2222 has the receiving portion 223, the protrusion 324 increases the overall weight of the impactor 320, thereby increasing the impact force and further improving the timeliness of the breaking action.

[0143] In one exemplary embodiment, the impactor 320 has a protrusion 324, and the top wall 2222b of the contact support 2222 has a receiving portion 223. The protrusion 324 is provided on the impactor 320, which makes it easier to process and shape.

[0144] In another exemplary embodiment, the impactor 320 has a receiving portion 223 and the contact support 2222 has a protrusion 324.

[0145] In one embodiment, the receiving portion 223 is a groove or a through hole. When the receiving portion 223 is a groove, the opening of the groove faces the disconnecting component 300.

[0146] In summary, the relays of the embodiments of this application have at least the following advantages and beneficial effects:

[0147] In the relay of this application embodiment, the stop structure 225a can stop and release the push rod member 222. On this basis, the contact support 2222 also has a deformation part 228 that can deform. After the stop structure 225a releases the push rod member 222, the push rod member 222 can continue to move away from the stationary contact member 210 to increase the contact gap 2254 between the moving contact member 221 and the stationary contact member 210. After the deformation part 228 deforms, it can also increase the contact gap 2254 between the moving contact member 221 and the stationary contact member 210. Under the combined action of the stop structure 225a and the deformation part 228, the contact gap 2254 between the moving contact member 221 and the stationary contact member 210 can be opened to a larger extent. The larger contact gap 2254 is conducive to arc extinguishing and achieving the purpose of rapid disconnection.

[0148] Furthermore, the stop portion 225 is designed as a ring portion 2252 and a plurality of spokes 2253. On the one hand, this ensures that the stop portion 225 can reliably cooperate with the yoke plate 110 when the relay is normally disconnected. On the other hand, since there is a gap 2254 between adjacent spokes 2253, each spoke 2253 is more likely to break when the stop portion 225 impacts the yoke plate 110, so as to allow the push rod member 222 to drive the moving contact 221 to continue to move away from the stationary contact 210, thereby widening the contact gap 2254.

[0149] Furthermore, the small end 2253a of each spoke 2253 is connected to the push rod member 222. This makes the connection area between the spoke 2253 and the push rod member 222 weaker, and the small end 2253a of the spoke 2253 is more likely to break when the stop 225 impacts the yoke plate 110.

[0150] Furthermore, by opening a groove 2251 with an opening facing away from the stationary contact member 210 in the part of the spoke 2253 near the push rod member 222, the stress in the part of the spoke 2253 near the push rod member 222 is more concentrated. When the stop part 225 is hit by the yoke plate 110, the spoke 2253 is more likely to crack and break at the groove 2251.

[0151] Furthermore, the side wall 2222a is provided with a bending portion 227. The side wall 2222a is more flexible at the bending portion 227 than at other locations. Therefore, when the impactor 320 hits the contact support 2222, the bending portion 227 of the side wall 2222a is more likely to deform, which increases the speed at which the deformation portion 228 deforms, thereby achieving the purpose of timely separation.

[0152] Furthermore, the retainer 610 can hold the push rod member 222 in a predetermined position where the contact gap between the moving contact 221 and the stationary contact 210 is sufficiently large to prevent arcing or reignition between the moving and stationary contacts, thereby avoiding short circuits. In addition, since the retainer 610 is connected to one of the yoke plate 110 and the push rod member 222, and can also cooperate with the other of the yoke plate 110 and the push rod member 222, the retainer 610 is not connected to the moving contact 221. Therefore, even if the moving contact 221 tilts or rotates during the disconnection process, the retainer 610 can maintain the contact gap between the moving contact 221 and the stationary contact 210 at a large value, preventing the retainer 610 from failing due to tilting of the moving contact 221.

[0153] Furthermore, at least a portion of the protrusion 324 can be inserted into the receiving portion 223. When the impactor 320 impacts the contact support 2222, the protrusion 324 and the receiving portion 223 engage in a limiting fit, preventing the impactor 320 from shifting position and ensuring that most of the impactor 320's kinetic energy is transferred to the contact support 2222. This increases the moving speed of the contact support 2222, improving the timeliness of the breaking action. Additionally, if the contact support 2222 is tilted before the impactor 320 impacts it, the protrusion 324, being inserted into the receiving portion 223, allows the impactor 320 to also exert its impact force on the contact support 2222, ensuring the breaking effect. Moreover, when the impactor 320 has the protrusion 324 and the contact support 2222 has the receiving portion 223, the protrusion 324 increases the overall weight of the impactor 320, thereby increasing the impact force and further improving the timeliness of the breaking action.

[0154] It is understood that the various embodiments / implementations provided in this application can be combined with each other without creating contradictions, and will not be described one by one here.

[0155] In the embodiments of the application, unless otherwise specified, the terms "first," "second," or "third," etc., are used to distinguish different objects, not to describe a specific order; the term "multiple" refers to two or more, unless otherwise explicitly specified. The terms "install," "connect," "link," "fix," etc., should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the application according to the specific circumstances.

[0156] In the description of the embodiments of the application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the application.

[0157] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the claims. In this specification, the illustrative expressions 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 one or more embodiments or examples.

[0158] The above are merely preferred embodiments of the application examples and are not intended to limit the application examples. For those skilled in the art, the application examples can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the application examples should be included within the protection scope of the application examples.

Claims

1. A relay, characterized in that, include: A contact cavity is provided with a stationary contact element, the contact cavity including a yoke plate; A moving component includes a moving contact and a push rod component, the push rod component being movable relative to the yoke plate, the push rod component including a contact bracket with a deformable portion, the moving contact being installed within the contact bracket, and the moving contact being used to contact or separate from the stationary contact. A disconnecting assembly includes an impactor configured to release the impactor in response to an excitation signal. The impactor applies a force to the contact support away from the stationary contact, causing the push rod member to move the moving contact and deforming the deformable portion to increase the distance between the moving and stationary contacts. In an unexcited state, the push rod member is movable between a first position near the stationary contact and a second position away from the stationary contact. A stop structure is provided on at least one of the yoke plate and the push rod member. The stop structure is configured to: stop the push rod member at the second position when the disconnecting component is in an unactivated state and the push rod member moves from the first position to the second position; and release the push rod member when the disconnecting component is in an activated state and the push rod member moves from the first position to the second position, so that the push rod member continues to move away from the stationary contact member to increase the distance between the moving contact member and the stationary contact member.

2. The relay according to claim 1, characterized in that, The yoke plate has a through hole, and the push rod component is movably inserted into the through hole.

3. The relay according to claim 2, characterized in that, A metal cover is connected to the side surface of the yoke plate facing away from the stationary contact member. The metal cover and the yoke plate form a driving chamber that communicates with the through hole. A moving iron core connected to the push rod member is provided in the driving chamber. When the moving iron core comes into contact with the bottom of the metal cover, the contact support is subjected to the force of the impacting object, and the deformable part can deform.

4. The relay according to claim 3, characterized in that, A coil assembly is also fitted around the outer periphery of the metal cover, and the coil assembly is electromagnetically coupled to the moving iron core.

5. The relay according to claim 1, characterized in that, The contact support includes two side walls and a top wall. The two side walls are located on both sides of the width direction of the moving contact. The top wall is located on the side of the moving contact facing the stationary contact and is connected to the two side walls. The top wall can contact the moving contact. The surface of the top wall facing away from the moving contact is used to withstand the impact. The side walls and / or the top wall are provided with the deformation portion.

6. The relay according to claim 5, characterized in that, The sidewall is provided with a bent portion, which is recessed into the contact support or protrudes outward from the contact support, and at least a portion of the bent portion constitutes the deformable portion.

7. The relay according to claim 6, characterized in that, The contact support also includes a bottom wall, which is located on the side of the moving contact opposite to the stationary contact and is connected to the ends of the two side walls away from the top wall; the portion of the side wall near the bottom wall constitutes the bent portion.

8. The relay according to claim 1, characterized in that, The stop structure includes a stop portion, which is disposed on one of the yoke plate and the push rod member; When the disconnecting component is in an unactivated state and the push rod member moves from the first position to the second position, the stop portion can contact the other of the yoke plate and the push rod member to stop the push rod member in the second position. And when the disconnecting component is in the activated state and the push rod member moves from the first position to the second position, the stop portion is able to impact the other of the yoke plate and the push rod member, and when the impact force is greater than or equal to a threshold, the stop portion breaks to allow the push rod member to continue moving away from the stationary contact member.

9. The relay according to claim 8, characterized in that, The push rod component is provided with the stop portion, which is located on the side of the yoke plate facing the stationary contact member.

10. The relay according to claim 9, characterized in that, The push rod component includes a push rod and a covering part, the covering part covering the outer peripheral surface of the push rod, and the stop part being disposed on the outer periphery of the covering part.

11. The relay according to claim 10, characterized in that, The stop portion and the covering portion are an integral structure.

12. The relay according to claim 9, characterized in that, The stop portion includes a ring portion and a plurality of spokes. The ring portion is sleeved on the outer periphery of the push rod member. One end of the plurality of spokes is connected to the inner ring surface of the ring portion, and the other end is connected to the outer peripheral surface of the push rod member. The plurality of spokes are arranged circumferentially along the push rod member, and there is a gap between two adjacent spokes.

13. The relay according to claim 12, characterized in that, Each of the spokes has a large end and a small end, the large end being larger than the small end, the large end being connected to the inner ring surface of the ring portion, and the small end being connected to the push rod member.

14. The relay according to claim 12, characterized in that, Each of the spokes has a groove near the push rod member, the opening of the groove facing away from the stationary contact member.

15. The relay according to claim 1, characterized in that, The relay also includes: A retainer, connected to one of the yoke plate and the push rod member, is configured such that when the disconnecting assembly is in the activated state, the retainer can engage with the other of the yoke plate and the push rod member to hold the push rod member in a predetermined position.

16. The relay according to claim 15, characterized in that, The second position is located between the first position and the predetermined position.

17. The relay according to claim 15, characterized in that, The other of the yoke plate and the push rod component is provided with a slot. When the retainer holds the push rod component in the predetermined position, the retainer is engaged in the slot.

18. The relay according to claim 1, characterized in that, The impactor is solid, and one of the impactor and the contact support has a protrusion and the other has a receiving portion; when the impactor strikes the contact support, at least a portion of the protrusion can be inserted into the receiving portion.

19. The relay according to claim 18, characterized in that, The receiving part is a groove or a through hole.

20. The relay according to any one of claims 1-17, characterized in that, The impactor is a gas or a solid.

21. The relay according to any one of claims 1-19, characterized in that, The disconnect component includes an exciter configured to release gas in response to an excitation signal.

22. The relay according to any one of claims 1-19, characterized in that, The push rod component also includes an insulating seat and a push rod, the insulating seat being connected to one end of the push rod, and the contact bracket being mounted on the insulating seat.

23. The relay according to any one of claims 1-19, characterized in that, The contact cavity includes a ceramic cover, and the static contact and the disconnect assembly are mounted on top of the ceramic cover.

24. The relay according to claim 23, characterized in that, The static contact includes at least two leads, which are mounted on the top of the ceramic cover.

25. The relay according to any one of claims 1-19, characterized in that, The disconnect component is mounted on the contact cavity.

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