relay

Abstract

This application discloses a relay, including a contact cavity, a stationary contact assembly, a first moving contact, and a first connecting member. The outer surface of the contact cavity is provided with a first soldering station and a second soldering station, which are integrally connected. The stationary contact assembly includes a first stationary contact and a second stationary contact; the first stationary contact is mounted on the first soldering station, and the second stationary contact is mounted in the contact cavity. The first moving contact is movably disposed within the contact cavity, and its two ends are used to contact or separate from the first and second stationary contacts of the stationary contact assembly, respectively. The first connecting member is mounted on the second soldering station.

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] High-voltage DC relays, as one type of relay, include a stationary contact assembly and a moving contact assembly. The moving contact can make or break contact with the stationary contact assembly to switch the relay between different states. When a large short-circuit current flows through the stationary and moving contact assemblies, the moving and stationary contacts will momentarily spring open due to the electrodynamic repulsion force generated by the short-circuit current.

[0004] In related technologies, a short-circuit protection ring structure is typically used to prevent the moving and stationary contacts from opening instantly. However, this short-circuit protection ring structure increases the size of the relay, which is detrimental to product miniaturization design. Utility Model Content

[0005] This application provides a relay to improve the problem of large relay size in related technologies.

[0006] The relay in this application embodiment includes:

[0007] A contact cavity, wherein a first soldering station and a second soldering station are protruding from the outer surface of the contact cavity, and the first soldering station and the second soldering station are integrally connected.

[0008] A static contact assembly includes a first static contact and a second static contact, wherein the first static contact is mounted on the first welding station and the second static contact is mounted on the contact cavity;

[0009] A first movable contact is movably disposed within the contact cavity, and its two ends are used to contact or separate from the first and second static contact elements of the static contact assembly, respectively; and

[0010] The first connector is mounted on the second welding station.

[0011] According to some embodiments of this application, the first soldering station and the second soldering station form a boss structure; the relay further includes a solder layer connected to the surface of the boss structure to fix the contact cavity, the first static contact and the first connector together.

[0012] According to some embodiments of this application, the relay further includes:

[0013] A first magnetic conductor is connected to the portion of the first connector located within the contact cavity, and the first magnetic conductor is located on the side of the first moving contact facing the corresponding first stationary contact.

[0014] According to some embodiments of this application, the first magnetic conductor is located between the first static contact and the second static contact of the corresponding static contact assembly.

[0015] According to some embodiments of this application, the second soldering station includes two sub-soldering stations, and the first soldering station is integrally connected to the two sub-soldering stations of the second soldering station; the first connector includes two sub-connectors, which are respectively installed on the two sub-soldering stations, and the first magnetic conductor is connected to the two sub-connectors of the first connector.

[0016] According to some embodiments of this application, the two sub-soldering stations of the second soldering station are integrally connected.

[0017] According to some embodiments of this application, the relay further includes:

[0018] The second magnetic conductor is fixed on the side of the first moving contact that faces away from the first stationary contact. The first magnetic conductor and the second magnetic conductor on both sides of the first moving contact are configured to form a first attraction force based on the magnetic field generated when the first moving contact is energized.

[0019] According to some embodiments of this application, the first welding station has a through first mounting hole, and the first static contact is installed in the first mounting hole.

[0020] According to some embodiments of this application, the second welding station has a second mounting hole, and the first connector is installed in the second mounting hole.

[0021] According to some embodiments of this application, the outer surface of the contact cavity is further provided with a third welding station, and the second static contact is mounted on the third welding station.

[0022] According to some embodiments of this application, the third welding station has a through third mounting hole, and the second static contact is installed in the third mounting hole.

[0023] According to some embodiments of this application, the contact cavity includes a ceramic cover, and the first welding station and the second welding station both protrude from the outer surface of the top of the ceramic cover.

[0024] According to some embodiments of this application, the number of the first welding station, the second welding station, the static contact assembly, the first moving contact, and the first connecting member are all two. The two first welding stations are integrally connected to the two second welding stations. The first static contact members of the two static contact assemblies are respectively installed on the two first welding stations. The two first moving contact members are used to contact or separate from the first static contact members and the second static contact members of the two static contact assemblies, respectively. The two first connecting members are respectively installed on the two second welding stations.

[0025] According to some embodiments of this application, the relay further includes a second moving contact movably disposed within the contact cavity, the two ends of the second moving contact being used to contact or separate from the two second stationary contacts.

[0026] According to some embodiments of this application, when the relay is in the first state, both ends of each of the first moving contacts are simultaneously in contact with the corresponding first stationary contact and the second stationary contact, and the second moving contact is separated from the two second stationary contacts;

[0027] When the relay is in the second state, the two ends of the second moving contact are in contact with the two second stationary contacts respectively, and each first moving contact is separated from the corresponding first stationary contact and second stationary contact.

[0028] According to some embodiments of this application, the length direction of the first moving contact is perpendicular to the length direction of the second moving contact.

[0029] According to some embodiments of this application, the relay further includes a third magnetic conductor located within the contact cavity, the third magnetic conductor being located between the two second stationary contacts and on the side of the second moving contact facing the second stationary contact.

[0030] According to some embodiments of this application, the outer surface of the contact cavity is further provided with two fourth welding stations, the relay further includes two second connectors respectively installed on the two fourth welding stations, and a portion of the second connectors extends into the contact cavity, and the third magnetic conductor is connected to the portion of the two second connectors located in the contact cavity.

[0031] According to some embodiments of this application, the line connecting the two second soldering stations is perpendicular to the line connecting the two fourth soldering stations.

[0032] According to some embodiments of this application, a fourth magnetic conductor is also fixed on the side of the second moving contact opposite to the second stationary contact, and the third and fourth magnetic conductors are configured to form a second attraction force based on the magnetic field generated when the second moving contact is energized.

[0033] According to some embodiments of this application, the second static contact includes a static component and a conductive component. The static component is disposed in the contact cavity, and the conductive component is connected to the static component and extends from the static component toward the first static contact. The first dynamic contact is capable of contacting or separating from the conductive component.

[0034] An embodiment of the above application has at least the following advantages or beneficial effects:

[0035] In the relay of this application embodiment, the first stationary contact is mounted on a first soldering station, and the first connecting member is mounted on a second soldering station. Since the first and second soldering stations are integrally connected, the first connecting member can be positioned as close as possible to the first stationary contact, thus reducing the size of the relay and facilitating product miniaturization. Furthermore, compared to the entire top outer surface of the contact cavity, the height of the first and second soldering stations is easier to control, which further helps improve the overall height accuracy of the contact cavity.

[0036] Furthermore, by providing a weld layer on the surface of the boss structure, the strength of the contact cavity, the two first static contacts, and the two first connectors after connection can be improved. In addition, a metallization layer needs to be formed on the top surface of the boss structure before forming the weld layer, and then the weld layer is formed on the metallization layer. Since the boss structure protrudes from the outer surface of the contact cavity, an automated device can be used to form the metallization layer on the top surface of the boss structure, avoiding the problem of forming metallization layers on other outer surfaces of the contact cavity. This improves processing efficiency and ensures the insulation distance between the two first static contacts.

[0037] Furthermore, the relay also includes a first magnetic conductor. On one hand, the first magnetic conductor is located on the side of the first moving contact facing the first stationary contact, thereby providing short-circuit protection and preventing the first moving contact and the first stationary contact from snapping apart instantly during a short circuit. On the other hand, the first magnetic conductor is connected to the contact cavity through a first connector, so the short-circuit protection force is transferred to the contact cavity. Since the contact cavity is a stationary component, there is no need for excessive coil holding force, thereby reducing the power consumption of the relay coil and the size of the relay, and improving the short-circuit protection capability. Furthermore, the two first magnetic conductors are respectively located on the side of the two first moving contacts facing the first stationary contact, which not only achieves product miniaturization but also avoids interference between the two first magnetic conductors and improves the material utilization rate of the magnetic conductors, reducing unnecessary materials. Attached Figure Description

[0038] 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.

[0039] Figure 1 This is a side view of a relay according to an embodiment of this application.

[0040] Figure 2 This is an exploded view of a relay according to an embodiment of this application.

[0041] Figure 3 It is along Figure 1 A cross-sectional view after being cut along section line AA.

[0042] Figure 4 It is an omission Figure 1 A schematic diagram of the first shell.

[0043] Figure 5 This is a 3D schematic diagram of the ceramic cover.

[0044] Figure 6 It is an omission Figure 4 A three-dimensional schematic diagram of the ceramic cover. Detailed Implementation

[0045] 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.

[0046] 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.

[0047] like Figures 1 to 3As shown, the relay of this embodiment includes a housing 10, a contact cavity 20, two stationary contact assemblies 30, a moving assembly 40, and a magnetic circuit portion 60. The contact cavity 20, the two stationary contact assemblies 30, the moving assembly 40, and the magnetic circuit portion 60 are disposed within the housing 10. The stationary contact assemblies 30 are fixed to the contact cavity 20, and a portion of the moving assembly 40 is located in the contact chamber 23 within the contact cavity 20 and is movable relative to the contact cavity 20. The magnetic circuit portion 60 is configured to drive the moving assembly 40 to move in response to an input signal, so that the moving assembly 40 contacts or separates from the stationary contact assemblies 30, thereby switching the relay between a first state and a second state.

[0048] The term "contact" refers to direct or indirect contact between the moving component 40 and the stationary contact component 30, allowing current to flow between them; the term "separation" refers to the disconnection between the moving component 40 and the stationary contact component 30, preventing current from flowing between them.

[0049] In one embodiment, in the first state and the second state, one is an external circuit controlled by a relay in parallel, and the other is an external circuit controlled by a relay in series.

[0050] Of course, in other embodiments, one of the first state and the second state can be a closed state and the other is an open state.

[0051] The following explanation will be based on the example where the external circuit controlled by the relay is in parallel in the first state and in series in the second state.

[0052] As an example, the outer casing 10 may include a first casing 11 and a second casing 12, which are connected to form a cavity for accommodating the contact cavity 20, the static contact assembly 30, the moving assembly 40, and the magnetic circuit portion 60. The shape of the first casing 11 and the second casing 12 connected together can be a cuboid, a cylinder, etc. In the embodiments of this application, the first casing 11 and the second casing 12 are connected to form a hollow cuboid, but this is not a limitation.

[0053] In one embodiment, both the first shell 11 and the second shell 12 are cuboid in shape and each has an opening on one side. The opening of the first shell 11 is opposite to the opening of the second shell 12, and the first shell 11 and the second shell 12 are fastened together to form a cavity for accommodating the cavity.

[0054] Of course, in other embodiments, the first shell 11 can be a flat plate structure, and the second shell 12 can be a cuboid shape with an opening, forming a cavity after the first shell 11 and the second shell 12 are fastened together.

[0055] like Figure 2 and Figure 3As shown, the contact cavity 20 includes an insulating cover 21 and a yoke plate 22. The insulating cover 21 covers one side surface of the yoke plate 22 in the thickness direction, and the insulating cover 21 and the yoke plate 22 form a contact cavity 23. The magnetic circuit portion 60 is located on the side of the yoke plate 22 facing away from the insulating cover 21.

[0056] In one embodiment, the insulating cover 21 may include a ceramic cover 211 and a frame plate 212. The ceramic cover 211 is made of ceramic material and is connected to the yoke plate 22 via the frame plate 212. The frame plate 212 may be a ring-shaped metal component, for example, made of an iron-nickel alloy. One end of the frame plate 212 is connected to the opening edge of the ceramic cover 211, for example, by laser welding, brazing, resistance welding, or adhesive bonding. The other end of the frame plate 212 is connected to the yoke plate 22, for example, by laser welding, brazing, resistance welding, or adhesive bonding.

[0057] like Figure 2 As shown, two static contact assemblies 30 are arranged along a first direction D1. Each static contact assembly 30 includes a first static contact 31 and a second static contact 32. Both the first static contact 31 and the second static contact 32 are mounted on the top of the insulating cover 21. The first static contact 31 and the second static contact 32 are arranged along a third direction D3. The direction of movement of the moving assembly 40 is defined as the second direction D2. The first direction D1, the second direction D2, and the third direction D3 are all perpendicular to each other.

[0058] In the embodiments of this application, the positions of the first static contact 31 of the two static contact components 30 correspond in the first direction D1, and the positions of the second static contact 32 of the two static contact components 30 correspond in the first direction D1.

[0059] like Figure 3 As shown, the yoke plate 22 has a first through hole 221 and a second through hole 222. The first through hole 221 and the second through hole 222 penetrate the yoke plate 22 along the second direction D2, and both the first through hole 221 and the second through hole 222 communicate with the contact chamber 23. The moving assembly 40 includes a first moving assembly 40a and a second moving assembly 40b. The first moving assembly 40a is movably disposed in the first through hole 221, and the second moving assembly 40b is movably disposed in the second through hole 222.

[0060] like Figure 2 and Figure 3As shown, the first moving assembly 40a includes a first push rod member 416 and two first moving contacts 415. The first push rod member 416 passes through the first through hole 221, and a portion of the first push rod member 416 is located within the contact chamber 23. The two first moving contacts 415 are installed on the portion of the first push rod member 416 located within the contact chamber 23. The two ends of one of the first moving contacts 415 are used to contact or separate from the first stationary contact member 31 and the second stationary contact member 32 of one of the stationary contact assemblies 30, respectively. The two ends of the other first moving contact member 415 are used to contact or separate from the first stationary contact member 31 and the second stationary contact member 32 of the other stationary contact assembly 30, respectively.

[0061] The second moving assembly 40b includes a second push rod member 426 and a second moving contact member 425. The second push rod member 426 passes through the second through hole 222, and a portion of the second push rod member 426 is located within the contact chamber 23. The second moving contact member 425 is installed on the portion of the second push rod member 426 located within the contact chamber 23. The two ends of the second moving contact member 425 are used to contact or separate from the two second stationary contacts 32, respectively.

[0062] In the embodiments of this application, when the external circuit controlled by the relay is in parallel, both ends of each first moving contact 415 are simultaneously in contact with the corresponding first stationary contact 31 and second stationary contact 32, and the second moving contact 425 is separated from the two second stationary contacts 32. When the external circuit controlled by the relay is in series, both ends of the second moving contact 425 are in contact with the two second stationary contacts 32 respectively, and each first moving contact 415 is separated from the corresponding first stationary contact 31 and second stationary contact 32.

[0063] The magnetic circuit portion 60 includes a first magnetic circuit assembly 61 and a second magnetic circuit assembly 62. The first magnetic circuit assembly 61 is connected to a first push rod member 416 and is configured to drive the first push rod member 416 to move in response to a first input signal. The second magnetic circuit assembly 62 is connected to a second push rod member 426 and is configured to drive the second push rod member 426 to move in response to a second input signal.

[0064] It should be noted that the relay in this embodiment is not limited to switching between parallel and series states. For example, it can also be designed to switch between closed and open states. For instance, the moving component includes a push rod member, and two first moving contacts 415 are mounted on the push rod member. When each first moving contact 415 contacts the corresponding first stationary contact 31 and second stationary contact 32, the relay is in a closed state, and the two first stationary contacts 31 and the two second stationary contacts 32 form two conductive circuits. When each first moving contact 415 separates from the corresponding first stationary contact 31 and second stationary contact 32, the relay is in an open state.

[0065] Please continue reading. Figure 2 In one embodiment, the length direction of the first movable contact 415 is perpendicular to the length direction of the second movable contact 425. In other words, the length direction of the first movable contact 415 is parallel to the third direction D3, and the length direction of the second movable contact 425 is parallel to the first direction D1.

[0066] In one embodiment, the first moving contact 415 may include one or more first moving contact pieces. When the first moving contact 415 includes multiple first moving contact pieces, the multiple first moving contact pieces can be arranged side by side along the first direction D1. The two ends of each first moving contact piece can contact or separate from the corresponding first stationary contact 31 and second stationary contact 32. When each first moving contact piece contacts the first stationary contact 31 and the second stationary contact 32, the multiple first moving contact pieces form multiple parallel circuits, which serve as a current shunt, thereby reducing the electrodynamic repulsion between the moving and stationary contacts.

[0067] The second moving contact 425 may include one or more second moving contacts. When the second moving contact 425 includes multiple second moving contacts, the multiple second moving contacts can be arranged side by side along the third direction D3. The two ends of each second moving contact can respectively contact or separate from two second stationary contacts 32. When the two ends of the second moving contact are in contact with the two second stationary contacts 32, the multiple second moving contacts form multiple parallel circuits, which play a current shunting role, thereby reducing the electric repulsion between the moving and stationary contacts.

[0068] like Figure 2 As shown, the second static contact 32 includes a static component 321 and a conductive component 322. The static component 321 is mounted on the top of the ceramic cover 211, and the conductive component 322 is connected to the static component 321 and extends from the static component 321 toward the first static contact 31. The first moving contact 415 can contact or separate from the conductive component 322.

[0069] The second moving contact 425 can contact the conductive component 322 or the stationary component 321.

[0070] like Figure 2 , Figure 4 and Figure 5 As shown, the outer surface of the top of the ceramic cover 211 is provided with two first soldering stations 24 and two second soldering stations 25, respectively. The two first soldering stations 24 are integrally connected to the two second soldering stations 25. The first static contact members 31 of the two static contact assemblies 30 are respectively mounted on the two first soldering stations 24. The relay also includes two first connecting members 71, respectively mounted on the two second soldering stations 25.

[0071] In the relay of this embodiment, the first stationary contact 31 is mounted on the first soldering station 24, and the first connecting member 71 is mounted on the second soldering station 25. Since the first soldering station 24 and the second soldering station 25 are integrally connected, the first connecting member 71 can be positioned as close as possible to the first stationary contact 31, thus reducing the size of the relay and facilitating product miniaturization. Furthermore, compared to the entire outer surface of the top of the contact cavity 20, the height of the first soldering station 24 and the second soldering station 25 is easier to control, which further helps to improve the overall height accuracy of the contact cavity 20.

[0072] like Figure 2 and Figure 4 As shown, the corresponding first soldering station 24 and second soldering station 25 form a boss structure 29; the relay also includes two soldering layers 28, which are respectively connected to the surfaces of the two boss structures 29 to fix the contact cavity 20, the two first static contacts 31 and the two first connectors 71.

[0073] In this embodiment, by providing a welding layer 28 on the surface of the boss structure 29, the strength of the contact cavity 20, the two first static contacts 31, and the two first connectors 71 after connection can be improved. Furthermore, before forming the welding layer 28, a metallization layer needs to be formed on the top surface of the boss structure 29, and then the welding layer 28 is formed on the metallization layer. Since the boss structure 29 protrudes from the outer surface of the contact cavity 20, an automated device can be used to form the metallization layer on the top surface of the boss structure 29, avoiding the problem of forming metallization layers on other outer surfaces of the contact cavity 20. This improves processing efficiency and ensures the insulation distance between the two first static contacts 31.

[0074] In one embodiment, the weld layer 28 is formed by heating and melting solder and then cooling it.

[0075] like Figure 5 As shown, the first welding station 24 has a through first mounting hole 241, and two first static contact members 31 are respectively installed in the two first mounting holes 241. The second welding station 25 has a second mounting hole 251, and two first connecting members 71 are respectively installed in the two second mounting holes 251.

[0076] like Figure 4 and Figure 5 As shown, the outer surface of the top of the ceramic cover 211 is also provided with two third welding stations 26, and two second static contact members 32 are respectively installed on the two third welding stations 26.

[0077] In one embodiment, the third welding station 26 has a through third mounting hole 261, and two second static contacts 32 are respectively installed in the two third mounting holes 261.

[0078] In this embodiment of the application, the stationary component 321 is installed in the third mounting hole 261.

[0079] like Figure 2 and Figure 6 As shown, the relay also includes two first magnetic conductors 72, which are respectively connected to the portions of the two first connectors 71 located within the contact cavity 20. The two first magnetic conductors 72 are respectively located on the side of the two first moving contacts 415 facing the corresponding first stationary contacts 31.

[0080] When a short-circuit current passes through the first moving contact 415, the first magnetic conductor 72 is magnetized, thereby generating an attractive force. This attractive force can resist the electrodynamic repulsive force generated between the first moving contact 415 and the first stationary contact 31 and the second stationary contact 32 due to the short-circuit current, preventing the first moving contact 415 from being instantly separated from the first stationary contact 31 and the second stationary contact 32 during a short circuit, thus playing a role in short-circuit protection.

[0081] In this embodiment, on the one hand, the first magnetic conductor 72 is located on the side of the first moving contact 415 facing the first stationary contact 31, thereby playing a role in short-circuit protection and preventing the first moving contact 415 and the first stationary contact 31 from instantly snapping apart during a short circuit; on the other hand, the first magnetic conductor 72 is connected to the contact cavity 20 through the first connector 71, so the attraction force for short-circuit protection is transferred to the contact cavity 20. Since the contact cavity 20 is a stationary component, there is no need for excessive coil holding force, thereby reducing the coil power consumption and the size of the relay, and improving the short-circuit protection capability; furthermore, the two first magnetic conductors 72 are respectively disposed on the side of the two first moving contacts 415 facing the first stationary contact 31, which not only achieves product miniaturization, but also avoids mutual interference between the two first magnetic conductors 72, and improves the material utilization rate of the magnetic conductors, reducing unnecessary materials.

[0082] It is understood that the first connector 71 is not limited to being connected to the first magnetic conductor 72, but can also be connected to other components.

[0083] like Figure 2 As shown, each first magnetic conductor 72 is located between the first static contact 31 and the second static contact 32 of the corresponding static contact assembly 30.

[0084] like Figure 2 As shown, the relay also includes two second magnetic conductors 417, which are respectively fixed on the side of the two first moving contacts 415 facing away from the first stationary contact 31. The first magnetic conductors 72 and the second magnetic conductors 417 on both sides of the first moving contact 415 are configured to form a first attraction force based on the magnetic field generated when the first moving contact 415 is energized.

[0085] When the first moving contact 415 is energized, the second magnetic conductor 417, which moves together with the first moving contact 415, approaches or contacts the first magnetic conductor 72, thus forming a magnetic circuit around the first moving contact 415 between the first magnetic conductor 72 and the second magnetic conductor 417. When a short-circuit current passes through the first moving contact 415, a first attractive force is generated between the first magnetic conductor 72 and the second magnetic conductor 417 along the contact pressure direction. This first attractive force can resist the electrodynamic repulsive force generated between the first moving contact 415 and the first stationary contact 31 and the second stationary contact 32 due to the short-circuit current, preventing the first moving contact 415 from popping open and playing a role in short-circuit protection.

[0086] As a modified embodiment, the distance between the first magnetic conductor 72 and the second magnetic conductor 417 can be designed to be variable. Specifically, the distance between the first magnetic conductor 72 and the second magnetic conductor 417 can be adjusted according to the magnitude of the current value, thereby changing the magnitude of the attraction force generated between the first magnetic conductor 72 and the second magnetic conductor 417, which can meet the requirements of short circuit resistance and overload interruption.

[0087] Continue reading Figure 2 The relay also includes a third magnetic conductor 73 located within the contact cavity 20. The third magnetic conductor 73 is located between the two second stationary contacts 32 and on the side of the second moving contact 425 facing the second stationary contacts 32.

[0088] When a short-circuit current passes through the second moving contact 425, the third magnetic conductor 73 is magnetized, thereby generating an attractive force. This attractive force can resist the electrodynamic repulsive force generated between the second moving contact 425 and the second stationary contact 32 due to the short-circuit current, preventing the second moving contact 425 and the second stationary contact 32 from snapping apart instantly during a short circuit, thus playing a role in short-circuit protection.

[0089] In one embodiment, the outer wall surface of the top of the ceramic cover 211 is further provided with two fourth soldering stations 27, each having a through fourth mounting hole 271. Two second connectors 74 are respectively installed in the two fourth mounting holes 271. The relay also includes two second connectors 74, which are respectively installed in the fourth mounting holes 271 of the two fourth soldering stations 27, and portions of the second connectors 74 extend into the contact cavity 20. A third magnetic conductor 73 is connected to the portions of the two second connectors 74 located within the contact cavity 20.

[0090] In this embodiment of the application, the third magnetic conductor 73 is connected to the contact cavity 20 through the second connector 74, so that the short-circuit resistance force is transferred to the contact cavity 20. Since the contact cavity 20 is a stationary component, there is no need for excessive coil holding force, thereby reducing the coil power consumption and the size of the relay, and improving the short-circuit resistance.

[0091] Of course, in other embodiments, the third magnetic conductor 73 may also be disposed on the second push rod member 426 to form a follow-up anti-short circuit structure.

[0092] In one embodiment, the line connecting the two second soldering stations 25 is perpendicular to the line connecting the two fourth soldering stations 27.

[0093] like Figure 2 As shown, a fourth magnetic conductor 427 is also fixed on the side of the second moving contact 425 facing away from the second stationary contact 32. The third magnetic conductor 73 and the fourth magnetic conductor 427 are configured to form a second attraction force based on the magnetic field generated when the second moving contact 425 is energized.

[0094] When the second moving contact 425 is energized, the fourth magnetic conductor 427, which moves together with the second moving contact 425, approaches or contacts the third magnetic conductor 73, thus forming a magnetic circuit around the second moving contact 425 between the third magnetic conductor 73 and the fourth magnetic conductor 427. When a short-circuit current passes through the second moving contact 425, a second attractive force is generated between the third magnetic conductor 73 and the fourth magnetic conductor 427 along the contact pressure direction. This second attractive force can resist the electrodynamic repulsive force generated between the second moving contact 425 and the second stationary contact 32 due to the short-circuit current, preventing the second moving contact 425 from popping open and playing a role in short-circuit protection.

[0095] As a modified embodiment, the distance between the third magnetic conductor 73 and the fourth magnetic conductor 427 can be designed to be variable. Specifically, the distance between the third magnetic conductor 73 and the fourth magnetic conductor 427 can be adjusted according to the magnitude of the current value, thereby changing the magnitude of the attraction force generated between the third magnetic conductor 73 and the fourth magnetic conductor 427, which can meet the requirements of short circuit resistance and overload interruption.

[0096] like Figures 4 to 6 As shown, the second soldering station 25 includes two sub-soldering stations 252, and each first soldering station 24 is integrally connected to the two sub-soldering stations 252 of the corresponding second soldering station 25; the first connector 71 includes two sub-connectors 711, which are respectively installed on the two sub-soldering stations 252, and the first magnetic conductor 72 is connected to the two sub-connectors 711 of the corresponding first connector 71.

[0097] In one embodiment, the two sub-soldering stations 252 of the second soldering station 25 are integrally connected.

[0098] In one embodiment, the first magnetic conductor 72, the second magnetic conductor 417, the third magnetic conductor 73, and the fourth magnetic conductor 427 can be in the shape of a line, a U, an L, or an E. The first magnetic conductor 72, the second magnetic conductor 417, the third magnetic conductor 73, and the fourth magnetic conductor 427 can be made of magnetically conductive materials such as iron, cobalt, nickel, and their alloys.

[0099] Of course, as a modified embodiment, the relay of this application embodiment may also include a static contact assembly 30 and a moving assembly. The static contact assembly 30 includes a first static contact 31 and a second static contact 32. The moving assembly has a moving contact, and the two ends of the moving contact are used to contact or separate from the first static contact 31 and the second static contact 32.

[0100] At this time, a first welding station 24, a second welding station 25 and a third welding station 26 are provided on the outer surface of the top of the ceramic cover 211. The first static contact 31 is installed on the first welding station 24, the second static contact 32 is installed on the third welding station 26, and the first connecting member 71 is installed on the second welding station 25.

[0101] In summary, the relays of the embodiments of this application have at least the following advantages and beneficial effects:

[0102] In the relay of this embodiment, the first stationary contact 31 is mounted on the first soldering station 24, and the first connecting member 71 is mounted on the second soldering station 25. Since the first soldering station 24 and the second soldering station 25 are integrally connected, the first connecting member 71 can be positioned as close as possible to the first stationary contact 31, thus reducing the size of the relay and facilitating product miniaturization. Furthermore, compared to the entire outer surface of the top of the contact cavity 20, the height of the first soldering station 24 and the second soldering station 25 is easier to control, which further helps to improve the overall height accuracy of the contact cavity 20.

[0103] Furthermore, by providing a weld layer 28 on the surface of the boss structure 29, the strength of the contact cavity 20, the two first stationary contacts 31, and the two first connecting members 71 after connection can be improved. In addition, a metallization layer needs to be formed on the top surface of the boss structure 29 before forming the weld layer 28, and then the weld layer 28 is formed on the metallization layer. Since the boss structure 29 protrudes from the outer surface of the contact cavity 20, an automated device can be used to form the metallization layer on the top surface of the boss structure 29, avoiding the problem of forming metallization layers on other outer surfaces of the contact cavity 20. This improves processing efficiency and ensures the insulation distance between the two first stationary contacts 31.

[0104] Furthermore, the relay also includes a first magnetic conductor 72. On one hand, the first magnetic conductor 72 is located on the side of the first moving contact 415 facing the first stationary contact 31, thereby providing short-circuit protection and preventing the first moving contact 415 and the first stationary contact 31 from instantly separating during a short circuit. On the other hand, the first magnetic conductor 72 is connected to the contact cavity 20 through the first connector 71, so the short-circuit protection force is transferred to the contact cavity 20. Since the contact cavity 20 is a stationary component, there is no need for excessive coil holding force, thereby reducing the power consumption of the relay coil and the size of the relay, and improving the short-circuit protection capability. Furthermore, the two first magnetic conductors 72 are respectively located on the side of the two first moving contacts 415 facing the first stationary contact 31, which not only achieves product miniaturization but also avoids mutual interference between the two first magnetic conductors 72, and improves the material utilization rate of the magnetic conductors, reducing unnecessary materials.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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, wherein a first soldering station and a second soldering station are protruding from the outer surface of the contact cavity, and the first soldering station and the second soldering station are integrally connected. A static contact assembly includes a first static contact and a second static contact, wherein the first static contact is mounted on the first welding station and the second static contact is mounted on the contact cavity; A first movable contact is movably disposed within the contact cavity, and the two ends of the first movable contact are used to contact or separate from the first static contact and the second static contact of the static contact assembly, respectively. as well as The first connector is mounted on the second welding station.

2. The relay according to claim 1, characterized in that, The first soldering station and the second soldering station form a boss structure; the relay also includes a solder layer connected to the surface of the boss structure to fix the contact cavity, the first static contact and the first connector.

3. The relay according to claim 1, characterized in that, The relay also includes: A first magnetic conductor is connected to the portion of the first connector located within the contact cavity, and the first magnetic conductor is located on the side of the first moving contact facing the corresponding first stationary contact.

4. The relay according to claim 3, characterized in that, The first magnetic conductor is located between the first static contact and the second static contact of the corresponding static contact assembly.

5. The relay according to claim 3, characterized in that, The second soldering station includes two sub-soldering stations, and the first soldering station is integrally connected to the two sub-soldering stations of the second soldering station; the first connector includes two sub-connectors, which are respectively installed on the two sub-soldering stations, and the first magnetic conductor is connected to the two sub-connectors of the first connector.

6. The relay according to claim 5, characterized in that, The two sub-soldering stations of the second soldering station are integrally connected.

7. The relay according to claim 3, characterized in that, The relay also includes: The second magnetic conductor is fixed on the side of the first moving contact that faces away from the first stationary contact. The first magnetic conductor and the second magnetic conductor on both sides of the first moving contact are configured to form a first attraction force based on the magnetic field generated when the first moving contact is energized.

8. The relay according to claim 1, characterized in that, The first welding station has a through first mounting hole, and the first static contact is installed in the first mounting hole.

9. The relay according to claim 1, characterized in that, The second welding station has a second mounting hole, and the first connector is installed in the second mounting hole.

10. The relay according to claim 1, characterized in that, The outer surface of the contact cavity is also provided with a third welding station, and the second static contact is mounted on the third welding station.

11. The relay according to claim 10, characterized in that, The third welding station has a through third mounting hole, and the second static contact is installed in the third mounting hole.

12. The relay according to claim 1, characterized in that, The contact cavity includes a ceramic cover, and the first soldering station and the second soldering station both protrude from the outer surface of the top of the ceramic cover.

13. The relay according to any one of claims 1-12, characterized in that, The number of the first welding station, the second welding station, the static contact component, the first moving contact component, and the first connecting component are all two. The two first welding stations are integrally connected to the two second welding stations. The first static contact components of the two static contact components are respectively installed on the two first welding stations. The two first moving contact components are used to contact or separate from the first static contact components and the second static contact components of the two static contact components respectively. The two first connecting components are respectively installed on the two second welding stations.

14. The relay according to claim 13, characterized in that, The relay also includes a second moving contact, which is movably disposed in the contact cavity. The two ends of the second moving contact are used to contact or separate from the two second stationary contacts.

15. The relay according to claim 14, characterized in that, When the relay is in the first state, both ends of each of the first moving contacts are simultaneously in contact with the corresponding first stationary contact and the second stationary contact, and the second moving contact is separated from the two second stationary contacts; When the relay is in the second state, the two ends of the second moving contact are in contact with the two second stationary contacts respectively, and each first moving contact is separated from the corresponding first stationary contact and second stationary contact.

16. The relay according to claim 14, characterized in that, The length direction of the first moving contact is perpendicular to the length direction of the second moving contact.

17. The relay according to claim 14, characterized in that, The relay further includes a third magnetic conductor located within the contact cavity, the third magnetic conductor being situated between the two second stationary contacts and on the side of the second moving contact facing the second stationary contact.

18. The relay according to claim 17, characterized in that, The outer surface of the contact cavity is also provided with two fourth welding stations. The relay also includes two second connectors, which are respectively installed on the two fourth welding stations, and a portion of the second connectors extends into the contact cavity. The third magnetic conductor is connected to the portion of the two second connectors located in the contact cavity.

19. The relay according to claim 18, characterized in that, The line connecting the two second welding stations is perpendicular to the line connecting the two fourth welding stations.

20. The relay according to claim 17, characterized in that, A fourth magnetic conductor is also fixed on the side of the second moving contact opposite to the second stationary contact. The third and fourth magnetic conductors are configured to form a second attraction force based on the magnetic field generated when the second moving contact is energized.

21. The relay according to any one of claims 1-12, characterized in that, The second static contact includes a static component and a conductive component. The static component is installed in the contact cavity, and the conductive component is connected to the static component and extends from the static component toward the first static contact. The first dynamic contact can contact or separate from the conductive component.

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