relay

Abstract

A relay includes a contact cavity, a contact assembly, a breaking assembly, and a retaining member. The contact cavity includes a yoke plate. The contact assembly includes a stationary contact and a movable member, the movable member including a movable contact and a push rod member, the movable contact mounted on the push rod member, the push rod member movable relative to the yoke plate to move the movable contact to contact or separate from the stationary contact, the movable contact and the stationary contact being capable of forming at least one conduction path when the movable contact contacts the stationary contact. The breaking assembly includes an impactor, the breaking assembly configured to release the impactor in response to an activation signal to impact the movable member to break at least one of the at least one conduction path. The retaining member is connected to one of the yoke plate and the push rod member, the retaining member configured to cooperate with the other of the yoke plate and the push rod member to retain the push rod member at a predetermined position when the breaking assembly breaks at least one of the at least one conduction path.

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] To address the problem of arcing between the moving and stationary contacts of a relay failing to disconnect in time when an abnormal overload such as an overcurrent occurs in the energized circuit, relays in related technologies typically incorporate a disconnecting component. This component responds to an excitation signal to disconnect the moving and stationary contacts. However, the moving and stationary contacts of the relay are prone to reignition, thus negating the disconnecting effect of the component. Utility Model Content

[0004] This application provides a relay to solve the problem of easy reignition of moving and stationary contacts in related technologies.

[0005] The relay in this application embodiment includes:

[0006] Contact cavity, including yoke plate;

[0007] A contact assembly includes a stationary contact and a movable component. The movable component includes a moving contact and a push rod component. The moving contact is mounted on the push rod component. The push rod component is movable relative to the yoke plate to drive the moving contact to move and contact or separate from the stationary contact. After the moving contact contacts the stationary contact, at least one conductive path can be formed.

[0008] A disconnecting component, including an impactor, is configured to release the impactor in response to an excitation signal, causing the impactor to impact the movable member to disconnect at least one of the at least one conductive path; and

[0009] A retainer, connected to one of the yoke plate and the push rod member, is configured to engage with the other of the yoke plate and the push rod member to hold the push rod member in a predetermined position after the disconnecting assembly disconnects at least one of the at least one of the conductive paths.

[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] When the retainer holds the push rod member in the predetermined position, at least a portion of the retainer is located within the through hole.

[0012] According to some embodiments of this application, the other of the yoke plate and the push rod member is provided with a first stop portion, and when the retainer holds the push rod member in the predetermined position, the retainer can stop and cooperate with the first stop portion.

[0013] According to some embodiments of this application, the other of the yoke plate and the push rod member is provided with a groove, the groove wall of which includes the first stop portion, and when the retainer holds the push rod member in the predetermined position, the retainer is engaged in the groove.

[0014] 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;

[0015] At least a portion of the retainer or the groove is disposed within the through hole.

[0016] According to some embodiments of this application, the retaining member includes a fixing part and a first elastic part, the fixing part is fixed to the yoke plate, and the first elastic part is connected to the fixing part;

[0017] The groove is provided on the push rod member, and when the retainer holds the push rod member in the predetermined position, the first elastic part is engaged in the groove.

[0018] According to some embodiments of this application, the fixing part is fixed to the side of the yoke plate facing the stationary contact member; the yoke plate has a through hole, and the push rod member is movably inserted into the through hole;

[0019] When the disconnecting component is in an unactivated state, the first elastic portion bends and extends into the through hole.

[0020] According to some embodiments of this application, both the fixing part and the first elastic part are flat sheets;

[0021] When the disconnection component is in an unactivated state, the fixing part and the first elastic part are coplanar, and the first elastic part and the push rod component are in clearance fit.

[0022] When the disconnecting component is in the activated state, the first elastic part bends away from the stationary contact in response to the movement of the push rod member, and the bent first elastic part can be engaged in the groove to hold the push rod member in the predetermined position.

[0023] According to some embodiments of this application, the fixing part is a ring structure surrounding the outer periphery of the push rod member. There are multiple first elastic parts. One end of each of the multiple first elastic parts is connected to the inner edge of the fixing part. The other end of each of the multiple first elastic parts forms an opening through which the push rod member passes, and the other end of each of the multiple first elastic parts can be inserted into the groove.

[0024] According to some embodiments of this application, the yoke plate has a through hole, the push rod member includes a push rod and a covering portion, the push rod is movably disposed in the through hole and the opening, the covering portion covers the outer peripheral surface of the push rod, the end of the covering portion away from the stationary contact member has a pointed portion, the tip of the pointed portion faces away from the stationary contact member, and the pointed portion is configured to insert into the opening in response to the movement of the push rod to open a plurality of the first elastic portions.

[0025] According to some embodiments of this application, the groove is disposed on the covering portion and located between the tip and the moving contact.

[0026] According to some embodiments of this application, a second stop is provided on the outer periphery of the covering portion. The second stop is located between the groove and the tip. The second stop is configured such that: when the conductive path is normally disconnected and the impact force of the second stop hitting the yoke plate is less than a threshold, the yoke plate is supported by the second stop; and when the conductive path is disconnected by the disconnecting component and the impact force of the second stop hitting the yoke plate is greater than or equal to the threshold, the second stop breaks to allow the movable member to continue moving away from the stationary contact member.

[0027] According to some embodiments of this application, the portion of the fixing part located between two adjacent first elastic parts is provided with a notch, and the notch is recessed from the inner edge of the fixing part toward the outer edge.

[0028] According to some embodiments of this application, a hollow structure is provided at the connection between the first elastic part and the fixed part.

[0029] According to some embodiments of this application, the retainer is disposed on the push rod member and includes a second elastic portion, and the groove is disposed on the inner wall of the through hole;

[0030] The second elastic portion is configured to deform in response to movement of the push rod member and pressure from the hole wall at the minimum diameter of the through hole. The deformed second elastic portion passes through the through hole and can be engaged in the groove to hold the push rod member in the predetermined position.

[0031] According to some embodiments of this application, the push rod component includes a push rod and a covering portion, wherein the push rod is movably disposed through the through hole, and the covering portion covers the outer peripheral surface of the push rod;

[0032] The retainer is connected to the covering portion; or, the retainer and the push rod are an integral structure.

[0033] According to some embodiments of this application, the push rod member further includes a second stop portion located on the side of the second elastic portion facing away from the stationary contact member. The second stop portion is configured such that: when the conductive path is normally disconnected and the impact force of the second stop portion striking the yoke plate is less than a threshold, the yoke plate is supported by the second stop portion; and when the conductive path is disconnected by the disconnecting component and the impact force of the second stop portion striking the yoke plate is greater than or equal to the threshold, the second stop portion breaks to allow the movable member to continue moving away from the stationary contact member, so that the second elastic portion can pass through the through hole.

[0034] According to some embodiments of this application, the retainer is connected to the yoke plate, the disconnection assembly is in an unactivated state, and the retainer is clearance-fitted with the push rod component.

[0035] According to some embodiments of this application, the yoke plate has a through hole, and the position where the retainer and the first stop part stop with each other is located within the through hole.

[0036] According to some embodiments of this application, the retainer includes an elastic portion configured to deform when compressed by another of the yoke plate and the push rod member.

[0037] According to some embodiments of this application, one of the yoke plate and the push rod member is provided with a second stop portion. The second stop portion is configured such that: when the conductive path is normally disconnected and the impact force of the second stop portion hitting the other of the yoke plate and the push rod member is less than a threshold, the yoke plate supports the push rod member; and when the conductive path is disconnected by the disconnecting component and the impact force of the second stop portion hitting the other of the yoke plate and the push rod member is greater than or equal to the threshold, the second stop portion breaks to allow the movable member to continue moving away from the stationary contact member.

[0038] According to some embodiments of this application, the push rod member is provided with a second stop portion, which is located on the side of the yoke plate facing the stationary contact member.

[0039] 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, the second stop portion being disposed on the outer peripheral surface of the covering portion, and the second stop portion and the covering portion being an integral structure.

[0040] According to some embodiments of this application, the push rod component includes a push rod, an insulating seat, and a contact bracket, wherein the insulating seat is connected to the push rod, the contact bracket is connected to the insulating seat, and the moving contact is located within the contact bracket;

[0041] The movable component further includes an elastic element connected between the moving contact and the contact support, which provides an elastic force to the moving contact to move toward the stationary contact, thereby providing contact pressure.

[0042] According to some embodiments of this application, the impactor is a gas or a solid.

[0043] According to some embodiments of this application, the disconnect component further includes an exciter configured to release the impactor in response to the excitation signal.

[0044] According to some embodiments of this application, the disconnect component is mounted on the contact cavity; and / or,

[0045] The static contact includes at least two leads, which are mounted on the contact cavity. The two ends of the moving contact in the length direction are used to contact or separate from the at least two leads, respectively.

[0046] 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.

[0047] According to some embodiments of this application, the push rod component includes a push rod, a covering part, and an insulating seat. The insulating seat is connected to one end of the push rod, and the covering part covers the outer peripheral surface of the push rod and is integral with the insulating seat.

[0048] An embodiment of the above application has at least the following advantages or beneficial effects:

[0049] The relay of this application embodiment includes a retaining member. The retaining member holds the push rod member in a predetermined position after the conductive path is broken. In this predetermined position, the contact gap between the moving contact and the stationary contact is sufficiently large to prevent arcing or reignition between the moving and stationary contacts, thereby preventing short circuits. Furthermore, since the retaining member is connected to one of the yoke plate and the push rod member, and can cooperate with the other of the yoke plate and the push rod member, the retaining member is not connected to the moving contact. Therefore, even if the moving contact tilts or rotates during the disconnection process, the retaining member can maintain the contact gap between the moving and stationary contacts at a large value, preventing the retaining member from failing due to tilting of the moving contact.

[0050] Furthermore, the retainer is connected to one of the yoke plate and the push rod member, and can stop and cooperate with the first stop on the other of the yoke plate and the push rod member. In this way, by setting the stop cooperation position between the retainer and the first stop, the size of the contact gap between the moving contact and the stationary contact when the push rod member is in a predetermined position can be adjusted, thus increasing the design flexibility.

[0051] Furthermore, when the retainer holds the push rod component in a predetermined position, at least a portion of the retainer is located within the through hole of the yoke plate. This prevents the retainer from excessively occupying space within the contact cavity, thus improving the space utilization of the contact cavity. In addition, when other components such as the arc-extinguishing grid are installed within the contact cavity, the retainer will not interfere with the arc-extinguishing grid. Therefore, it is unnecessary to design a larger contact cavity volume to accommodate both the arc-extinguishing grid and the retainer, which facilitates product miniaturization.

[0052] Furthermore, since at least part of the retainer or the groove is located within the through hole, the retainer or groove does not occupy excessive space within the contact cavity, further improving the space utilization within the contact cavity. In addition, when other components such as the arc-extinguishing grid are installed within the contact cavity, the retainer or groove will not interfere with the arc-extinguishing grid, thus eliminating the need to design a larger contact cavity volume to accommodate both the arc-extinguishing grid and the retainer / groove, which is beneficial for achieving product miniaturization.

[0053] Furthermore, the fixing part is fixed to the side of the yoke plate facing the stationary contact member, and the first elastic part is connected to the fixing part and bent into the through hole. The first elastic part bends into the through hole from the side of the yoke plate facing the stationary contact member, so the first elastic part can apply a stable stopping force to the push rod member. If the push rod member tends to move upward from the predetermined position, since the push rod member needs to flip the first elastic part upward from the through hole, it needs to overcome a large stopping force. Therefore, the first elastic part can reliably stop the push rod member so that the push rod member will not move upward and ensure that the push rod member can be maintained in the predetermined position.

[0054] Furthermore, by incorporating notches and hollow structures in the retaining member, the flexibility of the first elastic part can be enhanced, thereby increasing its deformation capacity. When the impact member impacts the movable member, the push rod member can more easily spread apart multiple first elastic parts, thereby rapidly widening the contact gap between the moving and stationary contact members.

[0055] Furthermore, by providing a pointed end at the end of the covering part away from the static contact member, when the impact member impacts the movable member, the pointed end can more easily insert into the opening formed by multiple first elastic parts and expand the multiple first elastic parts, so that the second stop part breaks after hitting the yoke plate, thereby allowing the push rod member to continue to move downward. Attached Figure Description

[0056] 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.

[0057] Figure 1 This is a top view of the relay according to Embodiment 1 of this application.

[0058] Figure 2 It is along Figure 1 The image shows a sectional view after AA sectioning, with the relay in the off state.

[0059] Figure 3 It is along Figure 1 The image shows a sectional view after AA sectioning, with the relay in the closed state.

[0060] Figure 4 It is along Figure 1 The sectional view after sectioning AA, where the impactor just contacts the movable member.

[0061] Figure 5 It is along Figure 1 The cross-sectional view after sectioning AA, in which the second stop is in contact with the yoke plate.

[0062] Figure 6 It is along Figure 1 The cross-sectional view after AA sectioning shows that the second stop broke after hitting the yoke plate.

[0063] Figure 7 It is along Figure 1 The sectional view after AA sectioning shows the retainer holding the push rod member in a predetermined position.

[0064] Figure 8 yes Figure 7A magnified view of the area at point X1.

[0065] Figure 9 This is a three-dimensional schematic diagram of the retainer according to Embodiment 1 of this application.

[0066] Figure 10 This is a three-dimensional schematic diagram of the retainer according to Embodiment 2 of this application, wherein the first elastic part is in an undeformed state.

[0067] Figure 11 This is a three-dimensional schematic diagram of the retainer according to Embodiment 2 of this application, wherein the first elastic part is in a deformed state.

[0068] Figure 12 This is a schematic diagram of the retainer and groove respectively disposed on the push rod member and the yoke plate in Embodiment 3 of this application, wherein the second stop is in contact with the yoke plate.

[0069] Figure 13 This is a schematic diagram of the retainer after it is inserted into the groove in Embodiment 3 of this application.

[0070] Figure 14 This is a schematic diagram of Embodiment 4 of this application, in which the retainer and the groove are respectively disposed on the push rod member and the yoke plate, wherein the second stop is in contact with the yoke plate.

[0071] Figure 15 This is a schematic diagram of the retainer after it is inserted into the groove in Embodiment 4 of this application.

[0072] Figure 16 This is a schematic diagram of Embodiment 5 of this application, in which the retainer and the groove are respectively disposed on the push rod member and the yoke plate, wherein the second stop is in contact with the yoke plate.

[0073] Figure 17 This is a schematic diagram of the retainer after it is inserted into the groove in Embodiment 5 of this application. Detailed Implementation

[0074] 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.

[0075] 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.

[0076] 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 up and down (the direction indicated by the arrow in the Y-axis direction is up, and the opposite direction is down); and the Z-axis direction can be divided into front and back (the direction indicated by the arrow in the Z-axis direction is front, and the opposite direction is back).

[0077] like Figures 1 to 3 As shown, the relay of this embodiment includes a contact cavity 100, a contact assembly 200, and a magnetic circuit portion 500. The contact cavity 100 has a contact chamber 101, and the contact assembly 200 includes a stationary contact 210 and a movable member 220. The stationary contact 210 is fixed to the contact cavity 100. A portion of the movable member 220 is movably located within the contact chamber 101 along the Y-axis direction. The magnetic circuit portion 500 is configured to drive the movable member 220 to move in response to an input signal, so that the movable member 220 can contact or separate from the stationary contact 210. After the movable member 220 contacts the stationary contact 210, at least one conductive path can be formed.

[0078] The term "contact" can refer to direct or indirect contact, as long as the current can pass through the movable member 220 and the stationary contact member 210.

[0079] In one implementation, such as Figure 2 As stated, when the movable member 220 is separated from the stationary contact member 210, the relay is in the open state. Figure 3 As shown, when the movable component 220 contacts the stationary contact 210, the relay is in a closed state.

[0080] The static 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 of the lead 211 extending out of the outer surface of the contact cavity 100.

[0081] The movable member 220 may include at least one movable contact 221 and a push rod member 222. The movable contact 221 is mounted on the push rod member 222, and the push rod member 222 can drive the movable contact 221 to move along the Y-axis. The two ends of a movable contact 221 along the X-axis can respectively contact or separate from the two corresponding leads 211.

[0082] In one embodiment, the stationary contact 210 includes two leads 211, which are spaced apart along the X-axis. The movable member 220 includes a movable contact 221 that can simultaneously contact both leads 211. When the movable contact 221 contacts both leads 211, current can flow in from one lead 211, pass through the movable contact 221, and then flow out from the other lead 211, thus forming a conductive path between the two leads 211 and the movable contact 221.

[0083] Of course, in other embodiments, the static contact 210 may include four leads 211, and the movable member 220 may include two movable contacts 221, one of which can contact one pair of leads 211 to form a conductive path, and the other movable contact 221 can contact another pair of leads 211 to form another conductive path.

[0084] In addition, the static contact 210 may include six or more lead-out members 211, and the movable member 220 may include three or more moving contact members 221, which will not be listed here.

[0085] Of course, in other embodiments, the static contact 210 may also include three or five leads 211.

[0086] like 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 Y-axis and communicates with the contact cavity 101. A push rod member 222 is movably inserted into the through hole 111.

[0087] 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 is connected to the contact chamber 101 through a through hole 111.

[0088] 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.

[0089] Please continue reading. Figure 2 and Figure 3 The relay in this embodiment of the application also includes a disconnection component 300, which is mounted on the top of the ceramic cover 121 and configured to drive the movable member 220 to move downward along the Y-axis in response to an excitation signal, so as to disconnect at least one of the at least one conductive path.

[0090] In one embodiment, at least a portion of the disconnect component 300 is located within the contact cavity 100, but this is not a limitation.

[0091] In the embodiments of this application, the relay is provided with a disconnection component 300. When an excitation signal occurs, the disconnection component 300 can disconnect at least one of the at least one conductive path formed by the contact component 200, thereby achieving the purpose of disconnecting the conductive path.

[0092] like Figure 2 and Figure 3 As shown, the disconnecting component 300 includes an impactor 301, which is configured to release the impactor 301 in response to an excitation signal, causing the impactor 301 to impact the movable member 220 to disconnect at least one of the at least one conductive path. The impactor 301 can be a solid or a gas.

[0093] The disconnecting assembly 300 also includes an exciter 310 configured to release an impactor 301 in response to an excitation signal. When the impactor 301 is a gas, the exciter 310 is activated and releases gas, the gas pressure impacting the movable member 220 to move the movable member 220 downward in the Y-axis direction, thereby disconnecting at least one of the at least one conductive path. When the impactor 301 is a solid, the solid is the impactor 320, the exciter 310 is activated and releases gas, the gas pressure driving the impactor 320 to move and impact the movable member 220, causing the movable member 220 to move downward in the Y-axis direction, thereby disconnecting at least one of the at least one conductive path.

[0094] In one embodiment, the impact member 320 is made of an insulating material, such as plastic, ceramic, etc., which is not limited in this application.

[0095] The "excitation signal" is generated when the threshold current (i.e., a large short-circuit current) passes through the contact component 200.

[0096] For monitoring the threshold current, a current sensor can be used to monitor the current value of the contact component 200, but this is not a limitation, as long as an excitation signal can be generated by detecting the threshold current.

[0097] In one embodiment, the igniter 310 may include gunpowder. When a threshold current passes through the contact component 200, the gunpowder is ignited and generates a large amount of gas. The gas forms a driving force that can drive the impact member 320 to move, thereby impacting the movable member 220 and breaking the conductive path.

[0098] In one embodiment, the exciter 310 may be an electric detonator or an electric detonating tube, but is not limited thereto.

[0099] Please continue reading. Figure 2 and Figure 3 The disconnect component 300 also includes a connector 330, through which the exciter 310 is mounted on top of the ceramic cover 121. The connector 330 can be directly connected to the ceramic cover 121, or indirectly connected to it via an adapter.

[0100] It is understandable that the connector 330 can be disposed on the outer surface of the ceramic cover 121 or on the inner surface of the ceramic cover 121.

[0101] The connector 330 is a cylindrical structure with openings at both ends, and at least a portion of the exciter 310 can be located inside the cylindrical structure. When the exciter 310 is not activated, at least a portion of the impactor 320 is located inside the cylindrical structure.

[0102] In one embodiment, the top of the ceramic cover 121 has a through mounting hole 123, and the connector 330 passes through the mounting hole 123.

[0103] like Figure 2 and Figure 3 As shown, the push rod component 222 includes a push rod 2221, an insulating seat 2223, and a contact bracket 2222. The push rod 2221 is movably inserted into the through hole 111 and is connected to the magnetic circuit part 500. The magnetic circuit part 500 can drive the push rod 2221 to move along the Y-axis. The insulating seat 2223 is located in the contact chamber 101 and is connected to the push rod 2221. The contact bracket 2222 is connected to the insulating seat 2223, and the moving contact 221 is located in the contact bracket 2222.

[0104] The movable member 220 also includes an elastic element 226, which is connected between the moving contact 221 and the contact support 2222 and is used to provide an elastic force to the moving contact 221 to move toward the stationary contact 210 in order to provide contact pressure.

[0105] In one 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 of the spring abuts against the insulating seat 2223.

[0106] The push rod component 222 also includes a covering portion 224, which covers the outer peripheral surface of the push rod 2221.

[0107] In one embodiment, the covering portion 224 may be integral with the insulating base 2223; in another embodiment, the covering portion 224 and the insulating base 2223 are spaced apart in the Y-axis direction.

[0108] 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.

[0109] like Figure 2 and Figure 3 As shown, a second stop 225 is provided on one of the yoke plate 110 and the push rod member 222. The second stop 225 is configured such that: when the conductive path is normally disconnected and the impact force of the second stop 225 on the other of the yoke plate 110 and the push rod member 222 is less than a threshold, the yoke plate 110 is supported on the push rod member 222; and when the conductive path is disconnected by the disconnecting component 300 and the impact force of the second stop 225 on the other of the yoke plate 110 and the push rod member 222 is greater than or equal to the threshold, the second stop 225 breaks to allow the movable member 220 to continue moving away from the stationary contact member 210.

[0110] In one embodiment, the second stop portion 225 is provided on the push rod member 222, the second stop portion 225 is provided on the outer periphery of the covering portion 224, and is located on the side of the yoke plate 110 facing the stationary contact member 210.

[0111] The second stop portion 225 is provided on the outer periphery of the covering portion 224. It can be that the second stop portion 225 and the covering portion 224 are an integral structure, and the second stop portion 225 protrudes from the outer periphery side of the covering portion 224; or, the second stop portion 225 and the covering portion 224 are separate structures, and the second stop portion 225 is connected to the covering portion 224.

[0112] The second stop 225 is configured such that: when the conductive path is normally disconnected and the impact force of the second stop 225 on the yoke plate 110 is less than a threshold, the yoke plate 110 is supported by the second stop 225; and when the conductive path is disconnected by the disconnecting component 300 and the impact force of the second stop 225 on the yoke plate 110 is greater than or equal to the threshold, the second stop 225 breaks to allow the movable member 220 to continue moving away from the stationary contact member 210.

[0113] In one embodiment, the second stop portion 225 is an annular structure that surrounds and connects to the outer peripheral side of the covering portion 224.

[0114] Of course, in other embodiments, the second stop portion 225 may also include a plurality of protrusions, which are provided on the outer peripheral side surface of the covering portion 224 and arranged along the circumference of the covering portion 224.

[0115] As a modified embodiment, the second stop 225 can also be provided on the yoke plate 110.

[0116] like Figure 4 As shown, when the excitation signal is generated, the disconnect component 300 releases the impact member 320, causing the impact member 320 to impact the movable member 220 downwards. Figure 5 As shown, the movable member 220 moves downward along the Y-axis under the impact force of the impact member 320. During the downward movement of the movable member 220, the second stop 225 strikes the yoke plate 110. Figure 6 As shown, when the impact force is greater than or equal to the threshold, the second stop 225 breaks, and the movable member 220 continues to move downward. At this time, the contact gap between the moving contact 221 and the stationary contact 210 is large enough, and it is not easy for reignition to occur between the moving and stationary contacts.

[0117] However, the inventors of this application discovered in their research that during actual operation, the contact gap between the moving contact 221 and the stationary contact 210 may become smaller due to various reasons, making it easy for arcing or reignition to occur between the moving and stationary contacts. For example, when the movable member 220 moves downward along the Y-axis, it may rigidly contact the metal cover 130 and rebound, causing the contact gap to decrease; or, when the impact member 320 impacts the movable member 220, the coil of the magnetic circuit 500 is not de-energized, and the magnetic circuit 500 may also drive the movable member 220 to move closer to the stationary contact 210, thus causing the contact gap to decrease; or, since the impact force of the impact member 320 is only one-time and not continuous, when the relay is installed upside down, the movable member 220 will fall back under its own gravity, thus causing the contact gap to decrease or even the moving and stationary contacts to return to the contact state.

[0118] Based on this, such as Figure 7As shown, to solve the above-mentioned technical problems, the relay in this embodiment of the application further includes a retaining member 610. The retaining member 610 is connected to one of the yoke plate 110 and the push rod member 222. The retaining member 610 is configured to cooperate with the other of the yoke plate 110 and the push rod member 222 after the disconnecting assembly 300 disconnects at least one of the at least one conductive path, so as to hold the push rod member 222 in a predetermined position, and the push rod member 222 will no longer move towards the stationary contact member 210. Wherein, 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 greater than a threshold value. At this time, the contact gap between the moving contact member 221 and the stationary contact member 210 is large enough that the moving and stationary contacts will not experience arc breakdown or reignition problems again.

[0119] The relay of this application embodiment includes a retaining member 610. The retaining member 610 can hold the push rod member 222 in a predetermined position after the conductive path is broken. In this predetermined position, the contact gap between the moving contact 221 and the stationary contact 210 is sufficiently large to avoid arcing or reignition between the moving and stationary contacts, thereby preventing short circuits. Furthermore, since the retaining member 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 retaining member 610 is not connected to the moving contact 221. Therefore, even if the moving contact 221 tilts or rotates during the disconnection process, the retaining member 610 can maintain the contact gap between the moving contact 221 and the stationary contact 210 at a large value, preventing the retaining member 610 from failing due to tilting of the moving contact 221.

[0120] Furthermore, because the moving contact 221 elastically abuts against the elastic member 226, the moving contact 221 is prone to skewing. When the impact member 320 impacts the moving contact 221 at a non-centered position, the moving contact 221 is prone to skewing during the disconnection process from the stationary contact 210. In this embodiment, since the retaining member 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, even if the moving contact 221 skewing, the push rod member 222 can be held in a predetermined position. Moreover, since the elastic member 226 provides elastic force to the moving contact 221, after the push rod member 222 is held in the predetermined position, the moving contact 221 can self-correct to a horizontal state by means of the elastic force, thereby ensuring the consistency of the contact gap at both ends of the moving contact 221.

[0121] It should be noted that the retaining member 610 in this embodiment of the application may be composed of one part or multiple parts.

[0122] In one embodiment, when the retainer 610 holds the pusher member 222 in a predetermined position, at least a portion of the retainer 610 is located within the through hole 111. This prevents the retainer 610 from excessively occupying space within the contact cavity 100, thus improving the space utilization of the contact cavity 100. Furthermore, when other components such as an arc-extinguishing grid are installed within the contact cavity 100, the retainer 610 will not interfere with the arc-extinguishing grid. Therefore, it is not necessary to design a larger volume for the contact cavity 100 to accommodate both the arc-extinguishing grid and the retainer 610, which facilitates product miniaturization.

[0123] like Figure 7 and Figure 8 As shown, the other of the yoke plate 110 and push rod member 222 is provided with a first stop portion 621. When the retainer 610 holds the push rod member 222 in a predetermined position, the retainer 610 can stop and cooperate with the first stop portion 621. Since the retainer 610 is connected to one of the yoke plate 110 and push rod member 222, and can stop and cooperate with the first stop portion 621 of the other of the yoke plate 110 and push rod member 222, the retainer 610 can hold the push rod member 222 in a predetermined position and prevent the push rod member 222 from moving toward the stationary contact member 210.

[0124] In this embodiment of the application, by setting the stop engagement position of the retainer 610 and the first stop 621, the size of the contact gap between the moving contact and the stationary contact when the push rod member 222 is in the predetermined position can be adjusted, which provides greater design flexibility.

[0125] Furthermore, the position where the retainer 610 engages with the first stop portion 621 is located within the through hole 111.

[0126] In one embodiment, the retainer 610 is fixedly connected to the yoke plate 110. When the retainer 610 holds the push rod member 222 in a predetermined position, the retainer 610 engages with the first stop portion 621 of the push rod member 222.

[0127] Furthermore, when the disconnect component 300 is in an unactivated state, the retaining member 610 and the push rod member 222 are in clearance fit. During normal switching of the relay, because the retaining member 610 and the push rod member 222 are in clearance fit, the retaining member 610 will not interfere with the movement of the push rod member 222.

[0128] In another embodiment, the retainer 610 is fixedly connected to the push rod member 222, and when the retainer 610 holds the push rod member 222 in a predetermined position, the retainer 610 engages with the first stop portion 621 of the yoke plate 110.

[0129] like Figure 8 and Figure 9As shown, the retainer 610 has a sheet-like structure, and the disconnect assembly 300 is in an unactivated state, with at least a portion of the retainer 610 located within the through hole 111.

[0130] In this embodiment, at least a portion of the retainer 610 is located within the through hole 111 of the yoke plate 110, and does not excessively occupy the space within the contact cavity 100, thus improving the space utilization of the contact cavity 100. Furthermore, when other components such as the arc-extinguishing grid are disposed within the contact cavity 100, the retainer 610 will not interfere with the arc-extinguishing grid, thereby eliminating the need to design a larger volume for the contact cavity 100 to accommodate both the arc-extinguishing grid and the retainer 610, which facilitates miniaturized product design.

[0131] It is understandable that when the retainer 610 is fixedly connected to the yoke plate 110, the retainer 610 can be fixed on the side surface of the yoke plate 110 facing the stationary contact member 210, or it can be fixed on the side surface of the yoke plate 110 away from the stationary contact member 210.

[0132] like Figure 8 As shown, the other of the yoke plate 110 and push rod member 222 is also provided with a groove 620. The groove wall of the groove 620 includes a first stop 621. When the retainer 610 holds the push rod member 222 in a predetermined position, the retainer 610 is engaged in the groove 620.

[0133] In this embodiment, the retainer 610 is disposed on the yoke plate 110, and the groove 620 is disposed on the push rod member 222. The retainer 610 can be engaged in the groove 620 to hold the push rod member 222 in a predetermined position. Since the retainer 610 can be engaged in the groove 620, the retainer 610 and the groove 620 are matched to a certain extent to ensure the stability of the push rod member 222 in the predetermined position.

[0134] In one embodiment, the retainer 610 includes an elastic portion configured to deform when compressed by another of the yoke plate 110 and push rod member 222.

[0135] like Figure 8 and Figure 9 As shown, the retaining member 610 includes a fixing part 611 and a first elastic part 612. The fixing part 611 is fixed to the side of the yoke plate 110 facing the stationary contact member 210. The first elastic part 612 is connected to the fixing part 611 and extends bent into the through hole 111. A groove 620 is provided on the push rod member 222. When the retaining member 610 holds the push rod member 222 in a predetermined position, the first elastic part 612 is engaged in the groove 620. The first elastic part 612 can deform when squeezed by the push rod member 222.

[0136] In this embodiment, the fixing part 611 is fixed to the side of the yoke plate 110 facing the stationary contact member 210, and the first elastic part 612 is connected to the fixing part 611 and extends bent into the through hole 111. The first elastic part 612 extends into the through hole 111 from the side of the yoke plate 110 facing the stationary contact member 210, so the first elastic part 612 can apply a stable stopping force to the push rod member 222. If the push rod member 222 has a tendency to move upward from the predetermined position, since the push rod member 222 needs to flip the first elastic part 612 upward from the through hole 111, it needs to overcome a large stopping force. Therefore, the first elastic part 612 can reliably stop the push rod member 222 so that the push rod member 222 will not move upward and ensure that the push rod member 222 can be maintained in the predetermined position. Furthermore, since the fixing part 611 is fixed on the side of the yoke plate 110 facing the stationary contact member 210, even if the first elastic part 612 bends downward and extends, it bends into the through hole 111, and the first elastic part 612 will not interfere with the moving iron core.

[0137] In one embodiment, the fixing part 611 is a ring structure surrounding the outer periphery of the push rod member 222. There are multiple first elastic parts 612. One end of each first elastic part 612 is connected to the inner edge of the fixing part 611. The other ends of each first elastic part 612 form an opening 613 through which the push rod 2221 of the push rod member 222 passes. The other ends of each first elastic part 612 can be engaged in the groove 620.

[0138] In this embodiment of the application, the number of first elastic parts 612 is designed to be multiple, and the other end of the multiple first elastic parts 612 can be inserted into the groove 620. When one of the first elastic parts 612 is dislodged from the groove 620, the remaining first elastic parts 612 are still inserted into the groove 620, thereby improving the fault tolerance of the retainer 610 in holding the push rod member 222 in the predetermined position.

[0139] like Figure 9 As shown, the fixing part 611 has a notch 614 located between two adjacent first elastic parts 612, and the notch 614 is recessed from the inner edge of the fixing part 611 to the outer edge. A hollow structure 615 is provided at the connection between the first elastic part 612 and the fixing part 611.

[0140] In this embodiment, the retaining member 610 is provided with a notch 614 and a hollow structure 615, which can improve the flexibility of the first elastic part 612 and thus enhance the deformation capability of the first elastic part 612. When the impact member 320 impacts the movable member 220, the push rod member 222 can more easily open up the multiple first elastic parts 612, thereby quickly widening the contact gap between the moving contact member 221 and the stationary contact member 210.

[0141] Please return to the reference. Figure 4 The end of the covering portion 224 away from the stationary contact member 210 has a tip 2241, the tip 2241a of which faces away from the stationary contact member 210. The tip 2241 is configured to insert into the opening 613 in response to the movement of the push rod 2221 to open a plurality of first elastic portions 612. The plurality of first elastic portions 612 can deform after being squeezed by the tip 2241.

[0142] In this embodiment of the application, by providing a tip 2241 at the end of the covering portion 224 away from the static contact member 210, when the impact member 320 impacts the movable member 220, the tip 2241 can more easily insert into the opening 613 formed by the plurality of first elastic portions 612 and expand the plurality of first elastic portions 612, so that the second stop portion 225 breaks after hitting the yoke plate 110, thereby causing the push rod member 222 to continue to move downward.

[0143] In one embodiment, the outer peripheral surface of the tip 2241 is a conical surface; in another embodiment, the outer peripheral surface of the tip 2241 may also be a pyramidal surface.

[0144] In one embodiment, a groove 620 is provided on the covering portion 224, and the groove 620 is located between the insulating seat 2223 and the second stop portion 225, with the second stop portion 225 located between the groove 620 and the tip 2241. That is, the moving contact 221, the insulating seat 2223, the groove 620, the second stop portion 225, and the tip 2241 are arranged sequentially.

[0145] In one embodiment, the groove 620 is recessed from the outer peripheral side of the covering portion 224 toward the push rod 2221.

[0146] The following is combined with Figures 4 to 7 The process of disconnecting the conductive path by the disconnecting component 300 and holding the push rod component 222 in a predetermined position by the retaining member 610 is described in detail.

[0147] like Figure 4 As shown, the impactor 320 begins to impact the movable member 220, and the movable member 220 tends to move downward.

[0148] like Figure 5 As shown, the movable member 220 moves downward and the second stop 225 strikes the yoke plate 110.

[0149] like Figure 6 As shown, the second stop 225 breaks off (the broken second stop 225 is omitted for clarity of the view), and then the tip 2241 opens up a plurality of first elastic portions 612, and the movable member 220 continues to move downward until the movable member 220 hits the metal cover 130.

[0150] like Figure 7 As shown, after the movable member 220 makes rigid contact with the metal cover 130, it will rebound. That is, after the movable member 220 collides with the metal cover 130, it will move upward. During the upward movement of the movable member 220, the first elastic part 612 can be inserted into the groove 620, so that the push rod member 222 is kept in the predetermined position.

[0151] It is understandable that during the upward movement of the movable member 220, the first elastic part 612 can be reset to the initial state or to a certain intermediate state without needing to be reset to the initial state, as long as the first elastic part 612 can be engaged in the groove 620.

[0152] It should be noted that this application is not limited to the first elastic part 612 only engaging in the groove 620 after the movable member 220 has made rigid contact with the metal cover 130 and rebounds. For example, after the impact member 320 impacts the movable member 220, the first elastic part 612 can directly engage in the groove 622 to lock it in place during the first downward movement of the movable member 220.

[0153] Furthermore, when the retainer 610 holds the push rod member 222 in a predetermined position, the retainer 610 is not limited to being inserted into the groove 620. It can also be that the retainer 610 engages with another direct stop in the yoke plate 110 and the push rod member 222. For example, when the retainer 610 is connected to the yoke plate 110, the retainer 610 can directly engage with the stop of the push rod member 222. For example, the retainer 610 engages with the insulating seat 2223 or the contact bracket 2222 of the push rod member 222.

[0154] Furthermore, the retaining member 610 is not limited to a sheet-like structure. For example, the retaining member 610 can also be a hook fixed to the yoke plate 110. When the impact member 320 impacts the movable member 220, during the first downward movement of the movable member 220, the hook can hook onto the push rod member 222 to prevent the movable member 220 from returning to its original position. Further, the hook can hook onto the insulating seat 2223 or contact support 2222 of the push rod member 222, etc.

[0155] The retainer 610 of this application is not limited to the structure of the above embodiment. As a modified embodiment, such as Figure 10 and Figure 11 As shown, the retainer 610 includes a fixing part 611 and a first elastic part 612. The first elastic part 612 is connected to the fixing part 611. The fixing part 611 is fixed to the yoke plate 110. For example, the fixing part 611 is fixed to the side of the yoke plate 110 facing the stationary contact member 210, or the fixing part 611 is fixed to the side of the yoke plate 110 away from the stationary contact member 210.

[0156] Both the fixing part 611 and the first elastic part 612 are flat sheets. When the disconnecting assembly 300 is in the unactivated state, the fixing part 611 and the first elastic part 612 are coplanar, and the first elastic part 612 is in clearance fit with the push rod member 222. When the disconnecting assembly 300 is in the activated state, the first elastic part 612 bends away from the stationary contact member 210 in response to the movement of the push rod member 222, and the bent first elastic part 612 can be inserted into the groove 620 to hold the push rod member 222 in a predetermined position.

[0157] In detail, during the normal disconnection and conduction process of the relay, the first elastic portion 612 of the retaining member 610 is in clearance fit with the push rod member 222. Therefore, the retaining member 610 does not affect the reciprocating motion of the push rod member 222. When the disconnecting assembly 300 is in the activated state, the second stop portion 225 impacts the yoke plate 110 and breaks. At this time, the downward movement of the push rod member 222 increases. When the covering portion 224 of the push rod member 222 contacts the first elastic portion 612, the covering portion 224 compresses the first elastic portion 612 and bends the first elastic portion 612 away from the stationary contact member 210. The bent first elastic portion 612 can be inserted into the groove 620 to hold the push rod member 222 in a predetermined position.

[0158] When the fixing part 611 is fixed on the side of the yoke plate 110 facing the stationary contact member 210, the bent first elastic part 612 can extend into the through hole 111 of the yoke plate 110; when the fixing part 611 is fixed on the side of the yoke plate 110 away from the stationary contact member 210, the bent first elastic part 612 will not extend into the through hole 111 of the yoke plate 110.

[0159] like Figure 12 and Figure 13 As shown, in a modified embodiment, the retainer 610 is connected to the push rod member 222, and the retainer 610 can cooperate with the yoke plate 110 to stop.

[0160] Furthermore, the yoke plate 110 is provided with a groove 620. The retainer 610 can be engaged into the groove 620.

[0161] In one embodiment, the groove 620 is provided on the inner wall of the through hole 111.

[0162] In one embodiment, the retainer 610 includes a second elastic portion 616 disposed on the push rod member 222. The second elastic portion 616 is configured to deform in response to movement of the push rod member 222 and by being squeezed by the hole wall at the minimum diameter of the through hole 111. The deformed second elastic portion 616 passes through the through hole 111 and can be engaged in the groove 620 to hold the push rod member 222 in a predetermined position.

[0163] It should be noted that the second elastic part 616 is provided on the push rod member 222, and can be: the second elastic part 616 and the covering part 224 are an integral structure; or, the second elastic part 616 and the covering part 224 are separate structures, with the second elastic part 616 connected to the covering part 224.

[0164] When the second elastic part 616 and the covering part 224 are an integral structure, the covering part 224, the second elastic part 616 and the push rod 2221 can be connected by injection molding.

[0165] When the second elastic part 616 and the covering part 224 are separate structures, the second elastic part 616 can be a metal spring sheet, and the second elastic part 616 is connected to the covering part 224.

[0166] like Figure 12 As shown, a second stop 225 is also provided on the outer periphery of the covering portion 224. The second stop 225 is located on the side of the second elastic portion 616 facing away from the stationary contact member 210. The second stop 225 is configured such that: when the conductive path is normally disconnected and the impact force of the second stop 225 hitting the yoke plate 110 is less than a threshold, the yoke plate 110 is supported by the second stop 225; and when the conductive path is disconnected by the disconnecting component 300 and the impact force of the second stop 225 hitting the yoke plate 110 is greater than or equal to the threshold, the second stop 225 breaks to allow the movable member 220 to continue moving away from the stationary contact member 210, so that the second elastic portion 616 can pass through the through hole 111.

[0167] In one embodiment, when the disconnecting component 300 is in an unactivated state, the second elastic portion 616 is in an initial state, in which the second elastic portion 616 is arranged obliquely relative to the axis of the push rod member 222. When the second elastic portion 616 is pressed by the hole wall at the minimum diameter of the through hole 111, it can deform in a direction closer to the axis of the push rod member 222. Furthermore, after the deformed second elastic portion 616 passes through the minimum diameter of the through hole 111, the second elastic portion 616 is not pressed by external force and can deform in a direction away from the axis of the push rod member 222. At this time, the second elastic portion 616 can be inserted into the groove 620 without passing through the minimum diameter of the through hole 111 from below the yoke plate.

[0168] like Figure 14 and Figure 15As shown, in a modified embodiment, when the disconnecting component 300 is in an unactivated state, the retaining member 610 is flat and arranged perpendicularly to the axis of the push rod member 222; when the disconnecting component 300 is in an activated state, the push rod member 222 drives the retaining member 610 to move downward. When the second elastic part 616 of the retaining member is squeezed by the hole wall at the minimum diameter of the through hole 111, it can bend towards the axis of the push rod member 222, thereby allowing the deformed retaining member 610 to pass through the minimum diameter of the through hole 111.

[0169] After the deformed second elastic part 616 passes through the minimum diameter of the through hole 111, the second elastic part 616 is not subjected to external pressure and can deform in a direction away from the axis of the push rod member 222. At this time, the second elastic part 616 can be inserted into the groove 620 without passing through the minimum diameter of the through hole 111 from below the yoke plate.

[0170] In one embodiment, the retainer 610 is connected to the covering portion 224.

[0171] like Figure 16 and Figure 17 As shown, in a modified embodiment, the retainer 610 is connected to the push rod 2221. In one embodiment, the retainer 610 and the push rod 2221 are an integral structure, with the retainer 610 serving as a boss on the push rod 2221, a portion of which extends out from the outer peripheral side of the covering portion 224.

[0172] As an example, the retainer 610 is shaped like a platform, having a small platform 6161 and a large platform 6162, with the area of ​​the small platform 6161 being smaller than the area of ​​the large platform 6162. The small platform 6161 and the large platform 6162 are arranged along the Y-axis, with the small platform 6161 away from the stationary contact 210 and the large platform 6162 close to the stationary contact 210. Since the platform is essentially connected to the outer periphery of the push rod 2221, the small platform 6161 and the large platform 6162 are annular, and the annular width of the small platform 6161 is smaller than the annular width of the large platform 6162.

[0173] In one embodiment, the table body includes any one of the following: a ball table, a frustum of a cone, or a truncated cone.

[0174] With the disconnect component 300 in the active state, the push rod 2221 and the platform move downwards together in the Y-axis direction. When the outer peripheral surface of the platform contacts the wall of the minimum diameter of the through hole 111, the outer peripheral surface of the platform deforms inwards to allow the platform to pass through the minimum diameter of the through hole 111. When the large platform surface 6162 of the platform passes through the minimum diameter of the through hole 111, the inwardly deformed outer peripheral surface of the platform returns to its original state, and part of the platform can be engaged in the groove 620 to keep the push rod component 222 in a predetermined position.

[0175] As an example, the outer peripheral surface of the platform also includes a guide ramp 6163, one end of which is connected to the small platform 6161 and the other end to the large platform 6162. When the disconnect assembly 300 is in the active state, the guide ramp 6163 is used to guide the platform through the minimum diameter of the through hole 111.

[0176] In one embodiment, the guide ramp 6163 can be a plane or a curved surface.

[0177] It should be noted that in the above embodiments, the retainer 610 is made of a metal material, including but not limited to stainless steel, beryllium copper, etc.

[0178] In summary, the relays of the embodiments of this application have at least the following advantages and beneficial effects:

[0179] The relay of this application embodiment includes a retaining member 610. The retaining member 610 can hold the push rod member 222 in a predetermined position after the conductive path is broken. In this predetermined position, the contact gap between the moving contact 221 and the stationary contact 210 is sufficiently large to avoid arcing or reignition between the moving and stationary contacts, thereby preventing short circuits. Furthermore, since the retaining member 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 retaining member 610 is not connected to the moving contact 221. Therefore, even if the moving contact 221 tilts or rotates during the disconnection process, the retaining member 610 can maintain the contact gap between the moving contact 221 and the stationary contact 210 at a large value, preventing the retaining member 610 from failing due to tilting of the moving contact 221.

[0180] Furthermore, the retainer 610 is connected to one of the yoke plate 110 and the push rod member 222, and can stop and cooperate with the first stop portion 621 on the other of the yoke plate 110 and the push rod member 222. In this way, by setting the stop cooperation position between the retainer 610 and the first stop portion 621, the contact gap between the moving contact and the stationary contact when the push rod member 222 is in a predetermined position can be adjusted, thus increasing the design flexibility.

[0181] Furthermore, when the retainer 610 holds the pusher member 222 in a predetermined position, at least a portion of the retainer 610 is located within the through hole 111 of the yoke plate 110. This means the retainer 610 does not excessively occupy space within the contact cavity 100, thus improving the space utilization of the contact cavity 100. In addition, when other components such as the arc-extinguishing grid are installed within the contact cavity 100, the retainer 610 will not interfere with the arc-extinguishing grid. Therefore, it is not necessary to design a larger volume for the contact cavity 100 to accommodate both the arc-extinguishing grid and the retainer 610, which facilitates product miniaturization.

[0182] Furthermore, since at least a portion of the retainer 610 or the groove 620 is located within the through hole 111, the retainer 610 or the groove 620 does not excessively occupy space within the contact cavity 100, further improving the space utilization rate within the contact cavity 100. In addition, when other components such as the arc-extinguishing grid are installed within the contact cavity 100, the retainer 610 / groove 620 will not interfere with the arc-extinguishing grid, thus eliminating the need to design a larger volume for the contact cavity 100 to accommodate both the arc-extinguishing grid and the retainer 610 / groove 620, which is beneficial for achieving product miniaturization.

[0183] Furthermore, the fixing part 611 is fixed to the side of the yoke plate 110 facing the stationary contact member 210, and the first elastic part 612 is connected to the fixing part 611 and bends into the through hole 111. The first elastic part 612 bends into the through hole 111 from the side of the yoke plate 110 facing the stationary contact member 210, so the first elastic part 612 can apply a stable stopping force to the push rod member 222. If the push rod member 222 has a tendency to move upward from the predetermined position, since the push rod member 222 needs to flip the first elastic part 612 upward from the through hole 111, it needs to overcome a large stopping force. Therefore, the first elastic part 612 can reliably stop the push rod member 222 so that the push rod member 222 will not move upward and ensure that the push rod member 222 can be maintained in the predetermined position.

[0184] Furthermore, by providing a notch 614 and a hollow structure 615, the retaining member 610 can enhance the flexibility of the first elastic part 612, thereby improving its deformation capability. When the impact member 320 impacts the movable member 220, the push rod member 222 can more easily open up the multiple first elastic parts 612, thereby quickly widening the contact gap between the moving contact member 221 and the stationary contact member 210.

[0185] Furthermore, by providing a pointed portion 2241 at the end of the covering portion 224 away from the static contact member 210, when the impact member 320 impacts the movable member 220, the pointed portion 2241 can more easily insert into the opening 613 formed by the plurality of first elastic portions 612 and expand the plurality of first elastic portions 612, so that the second stop portion 225 breaks after impacting the yoke plate 110, thereby causing the push rod member 222 to continue to move downward.

[0186] 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.

[0187] In the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" 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 this application based on the specific circumstances.

[0188] 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.

[0189] 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.

[0190] 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 by comprising: include: Contact cavity, including yoke plate; A contact assembly includes a stationary contact and a movable component. The movable component includes a moving contact and a push rod component. The moving contact is mounted on the push rod component. The push rod component is movable relative to the yoke plate to drive the moving contact to move and contact or separate from the stationary contact. After the moving contact contacts the stationary contact, at least one conductive path can be formed. A disconnecting component, including an impactor, is configured to release the impactor in response to an excitation signal, causing the impactor to impact the movable member to disconnect at least one of the conductive paths. as well as A retainer, connected to one of the yoke plate and the push rod member, is configured to engage with the other of the yoke plate and the push rod member to hold the push rod member in a predetermined position after the disconnecting assembly disconnects at least one of the at least one of the conductive paths.

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; When the retainer holds the push rod member in the predetermined position, at least a portion of the retainer is located within the through hole.

3. The relay of claim 1, wherein The other of the yoke plate and the push rod member is provided with a first stop portion. When the retainer holds the push rod member in the predetermined position, the retainer can stop and cooperate with the first stop portion.

4. The relay according to claim 3, characterized in that The other of the yoke plate and the push rod component is provided with a groove, the groove wall of which includes the first stop portion. When the retainer holds the push rod component in the predetermined position, the retainer is engaged in the groove.

5. The relay of claim 4, wherein The yoke plate has a through hole, and the push rod component is movably inserted into the through hole; At least a portion of the retainer or the groove is disposed within the through hole.

6. The relay according to claim 4, characterized in that, The retaining member includes a fixing part and a first elastic part, the fixing part is fixed to the yoke plate, and the first elastic part is connected to the fixing part; The groove is provided on the push rod member, and when the retainer holds the push rod member in the predetermined position, the first elastic part is engaged in the groove.

7. The relay according to claim 6, characterized in that The fixing part is fixed to the side of the yoke plate facing the stationary contact member; the yoke plate has a through hole, and the push rod member is movably inserted into the through hole; When the disconnecting component is in an unactivated state, the first elastic portion bends and extends into the through hole.

8. The relay of claim 6, wherein Both the fixing part and the first elastic part are flat sheets; When the disconnection component is in an unactivated state, the fixing part and the first elastic part are coplanar, and the first elastic part and the push rod component are in clearance fit. When the disconnecting component is in the activated state, the first elastic part bends away from the stationary contact in response to the movement of the push rod member, and the bent first elastic part can be engaged in the groove to hold the push rod member in the predetermined position.

9. The relay according to claim 6, characterized in that, The fixing part is a ring structure that surrounds the outer periphery of the push rod member. There are multiple first elastic parts. One end of each first elastic part is connected to the inner edge of the fixing part. The other end of each first elastic part forms an opening through which the push rod member passes. The other end of each first elastic part can be inserted into the groove.

10. The relay according to claim 9, characterized in that, The yoke plate has a through hole, and the push rod member includes a push rod and a covering portion. The push rod is movably inserted into the through hole and the opening. The covering portion covers the outer peripheral surface of the push rod. The end of the covering portion away from the stationary contact member has a pointed portion. The tip of the pointed portion faces away from the stationary contact member. The pointed portion is configured to insert into the opening in response to the movement of the push rod to open a plurality of the first elastic portions.

11. The relay of claim 10, wherein The groove is provided on the covering portion and is located between the tip and the moving contact.

12. The relay according to claim 11, characterized in that The outer periphery of the covering part is provided with a second stop part, which is located between the groove and the tip. The second stop part is configured such that when the conductive path is normally disconnected and the impact force of the second stop part hitting the yoke plate is less than a threshold, the yoke plate is supported by the second stop part. And when the conductive path is disconnected by the disconnecting component, and the impact force of the second stop on the yoke plate is greater than or equal to a threshold, the second stop breaks to allow the movable member to continue moving away from the stationary contact.

13. The relay of claim 9, wherein, The fixing part is provided with a notch in the portion between two adjacent first elastic parts, and the notch is recessed from the inner edge of the fixing part to the outer edge.

14. The relay of claim 6, wherein, The connection between the first elastic part and the fixed part is provided with a hollow structure.

15. The relay of claim 5, wherein, The retainer is disposed on the push rod member and includes a second elastic portion; the groove is disposed on the inner wall of the through hole. The second elastic portion is configured to deform in response to movement of the push rod member and pressure from the hole wall at the minimum diameter of the through hole. The deformed second elastic portion passes through the through hole and can be engaged in the groove to hold the push rod member in the predetermined position.

16. The relay according to claim 15, characterized in that, The push rod component includes a push rod and a covering part. The push rod is movably inserted through the through hole, and the covering part covers the outer peripheral surface of the push rod. The retainer is connected to the covering portion; or, the retainer and the push rod are an integral structure.

17. The relay of claim 15, wherein The push rod component further includes a second stop portion, which is located on the side of the second elastic portion facing away from the static contact member. The second stop portion is configured such that when the conductive path is normally disconnected and the impact force of the second stop portion hitting the yoke plate is less than a threshold, the yoke plate is supported by the second stop portion. And when the conductive path is disconnected by the disconnecting component, and the impact force of the second stop on the yoke plate is greater than or equal to a threshold, the second stop breaks to allow the movable member to continue moving away from the stationary contact, so that the second elastic part can pass through the through hole.

18. The relay of claim 3, wherein, The retainer is connected to the yoke plate, the disconnection assembly is in an unactivated state, and the retainer is in clearance fit with the push rod assembly.

19. The relay according to claim 3, characterized in that, The yoke plate has a through hole, and the retainer is positioned within the through hole to engage with the first stop.

20. The relay according to claim 1, characterized in that, The retainer includes an elastic portion configured to deform when compressed by another of the yoke plate and the push rod member.

21. The relay according to claim 1, characterized in that, The yoke plate and the push rod member are provided with a second stop. The second stop is configured such that when the conductive path is normally disconnected and the impact force of the second stop hitting the other of the yoke plate and the push rod member is less than a threshold, the yoke plate supports the push rod member. And when the conductive path is disconnected by the disconnecting component, and the impact force of the second stop on the other of the yoke plate and the push rod member is greater than or equal to a threshold, the second stop breaks to allow the movable member to continue moving away from the stationary contact.

22. The relay according to claim 21, characterized in that, The push rod component is provided with a second stop portion, which is located on the side of the yoke plate facing the stationary contact member.

23. The relay of claim 22, wherein, The push rod component includes a push rod and a covering part. The covering part covers the outer peripheral surface of the push rod, and the second stop part is disposed on the outer peripheral surface of the covering part. The second stop part and the covering part are integral structures.

24. The relay according to any one of claims 1-23, characterized in that, The push rod component includes a push rod, an insulating seat, and a contact bracket. The insulating seat is connected to the push rod, the contact bracket is connected to the insulating seat, and the moving contact is located inside the contact bracket. The movable component further includes an elastic element connected between the moving contact and the contact support, which provides an elastic force to the moving contact to move toward the stationary contact, thereby providing contact pressure.

25. The relay according to any one of claims 1-23, characterized in that, The impactor is a gas or a solid.

26. The relay according to any one of claims 1-23, characterized in that, The disconnect component also includes an exciter configured to release the impactor in response to the excitation signal.

27. The relay according to any one of claims 1-23, characterized in that, The disconnect component is mounted on the contact cavity; and / or, The static contact includes at least two leads, which are mounted on the contact cavity. The two ends of the moving contact in the length direction are used to contact or separate from the at least two leads, respectively.

28. The relay according to any one of claims 1 to 23, 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.

29. The relay according to any one of claims 1-23, characterized in that, The push rod component includes a push rod, a covering part, and an insulating seat. The insulating seat is connected to one end of the push rod, and the covering part covers the outer peripheral surface of the push rod and is integral with the insulating seat.

Images