Contact assembly and relay

Abstract

The invention relates to a contact assembly and a relay. The contact assembly comprises a static contact unit, the static contact unit comprises a static contact piece and a static magnetizer, the static contact piece is provided with a static contact, and the static magnetizer is connected to the static contact piece; the movable contact unit comprises a movable contact piece and a movable magnetizer, the movable contact piece is provided with a movable contact, the movable contact can be in contact conduction with the static contact, the movable magnetizer is connected to the movable contact piece, and the movable magnetizer and the static magnetizer are oppositely arranged; and the isolation piece is arranged between the movable magnetizer and the static magnetizer, and the isolation piece is configured to be used for blocking the contact between the movable magnetizer and the static magnetizer. According to the invention, the separator is arranged between the moving magnetizer and the static magnetizer, so that spacing limitation between the moving magnetizer and the static magnetizer is realized, buffering is provided for deformation of the moving contact, excessive deformation is avoided, stability of a magnetic gap and a magnetic circuit is ensured, and reliable conduction between a magnetic attraction force and a contact is maintained; and the working reliability and the service life of the relay are improved.

Description

Technical Field

[0001] This application relates to the field of relay technology, and in particular to contact components and relays. Background Technology

[0002] Relays, as common components for circuit switching control, are widely used in industrial control, smart homes, automotive electronics, and other fields. In related technologies, relays are typically in a closed state when the stationary and moving contacts are in contact, and in an open state when the stationary and moving contacts are separated. They are maintained in a stable contact state by the attraction between the stationary and moving magnets, thereby achieving stable circuit conduction.

[0003] However, when a short circuit fault occurs in the circuit and a short circuit current is generated, the stationary and moving magnetic conductors will generate a large magnetic attraction force under the action of a strong current, causing them to attract each other. At this time, this magnetic attraction force will exert excessive pulling and squeezing forces on the moving contact connected to the moving magnetic conductor, which can easily lead to excessive deformation of the moving contact, thereby reducing the reliability and service life of the relay. Summary of the Invention

[0004] Therefore, it is necessary to provide a contact component and a relay to address the problem of excessive deformation of the moving contact.

[0005] A contact assembly, the contact assembly comprising:

[0006] A stationary contact unit, comprising a stationary contact element and a stationary magnetic conductor, wherein the stationary contact element has a stationary contact point and the stationary magnetic conductor is connected to the stationary contact element;

[0007] A movable contact unit includes a movable contact element and a movable magnetic conductor. The movable contact element has a movable contact point that can make contact with the stationary contact point to conduct electricity. The movable magnetic conductor is connected to the movable contact element, and the movable magnetic conductor and the stationary magnetic conductor are arranged opposite to each other.

[0008] An isolator is disposed between the moving magnetic conductor and the stationary magnetic conductor, and the isolator is configured to prevent the moving magnetic conductor and the stationary magnetic conductor from contacting each other.

[0009] In one embodiment, the insulating element is made of an insulating material.

[0010] In one embodiment, the isolator has a gap with at least one of the stationary magnet and the moving magnet.

[0011] In one embodiment, the isolator is configured to be fixed between the moving magnetic conductor and the stationary magnetic conductor by a fixing member;

[0012] Alternatively, the isolator is connected to at least one of the stationary magnet and the moving magnet.

[0013] In one embodiment, the stationary contact and the moving contact are spaced apart along the thickness direction of the contact assembly, and the isolator is disposed between the moving magnet and the stationary magnet along the thickness direction.

[0014] In one embodiment, the orthographic projection of at least one of the static magnet and the dynamic magnet along the thickness direction falls within the orthographic projection range of the isolator along the thickness direction.

[0015] In one embodiment, the orthographic projection of the stationary magnet along the thickness direction and the orthographic projection of the isolator along the thickness direction have a first region that do not overlap, and the orthographic projection of the moving magnet along the thickness direction and the orthographic projection of the isolator along the thickness direction have a second region that do not overlap, and the first region and the second region partially or completely overlap.

[0016] In one embodiment, the orthographic projection of the spacer along the thickness direction is a solid shape or a perforated shape.

[0017] In one embodiment, the stationary contact includes a connecting portion and an electrical lead-out portion, the electrical lead-out portion having the stationary contact point, the connecting portion being connected to the electrical lead-out portion, and the stationary magnetic conductor being connected to the connecting portion.

[0018] In one embodiment, the connecting portion is provided with a hollowed-out groove;

[0019] And / or, the connecting part and the electrical lead-out part are riveted together via the stationary contact;

[0020] And / or, the static magnetic conductor is riveted to the connecting part.

[0021] In one embodiment, the static magnet is connected to the connecting portion, and the connecting portion has a first fixing protrusion on the side opposite to the static magnet.

[0022] In one embodiment, the end of the connection portion away from the electrical lead-out portion is provided with a second fixing protrusion.

[0023] In one embodiment, the conductivity of the connection portion is less than the conductivity of the electrical lead-out portion.

[0024] In one embodiment, the static magnet and the connecting part are made of the same material.

[0025] In one embodiment, the materials of the static magnet and the connecting part include at least one of iron, cobalt, and nickel.

[0026] In one embodiment, the stationary contact is provided at one end of the stationary contact member, and the stationary magnetic conductor is disposed between the other end of the stationary contact member and the stationary contact.

[0027] In one embodiment, the contact assembly further includes a lead-out piece, the lead-out piece including a lead-out body and a lead-out end, the lead-out body being connected to the movable contact, the lead-out end being connected to the lead-out body, and the lead-out end being configured for electrical connection to an external line.

[0028] In one embodiment, the movable contact and the lead-out piece are riveted together by multiple rows of second protrusions, which are spaced apart along the length of the movable contact.

[0029] In one embodiment, the moving contact includes multiple stacked compression springs.

[0030] A relay comprising the contact component described in any of the preceding claims.

[0031] In one embodiment, the relay further includes a housing and a fixing member connected to the housing, and an isolator of the contact assembly connected to the fixing member.

[0032] In one embodiment, the stationary contact of the contact assembly is provided with a first fixing protrusion, and the housing is provided with a first fixing groove for engaging with the first fixing protrusion.

[0033] And / or, the stationary contact of the contact assembly is provided with a second fixing protrusion, and the housing is provided with a second fixing groove for engaging with the second fixing protrusion.

[0034] The aforementioned contact assembly and relay include a contact assembly comprising a stationary contact unit, a moving contact unit, and an isolator. The stationary contact unit includes a stationary contact element and a stationary magnetic conductor, while the moving contact unit includes a moving contact element and a moving magnetic conductor. The contact assembly places the isolator between the moving and stationary magnetic conductors, preventing direct contact when the magnetic attraction force is excessive. Thus, the isolator's blocking and limiting effect maintains a preset gap between the moving and stationary magnetic conductors, preventing them from becoming too close and causing excessive deformation of the moving contact, thereby improving the relay's reliability and lifespan. Furthermore, the isolator reliably separates the moving and stationary magnetic conductors, preventing direct contact that could cause magnetic short circuits or magnetic shunting, thus ensuring stable magnetic flux, maintaining stable magnetic attraction force, and ensuring stable and reliable contact between the moving and stationary contacts. Attached Figure Description

[0035] Figure 1 This is a partial structural diagram of a relay according to an embodiment of this application.

[0036] Figure 2 This is a schematic diagram of the installation structure of a contact component according to an embodiment of this application.

[0037] Figure 3 This is a schematic diagram of the overall structure of a contact component according to an embodiment of this application.

[0038] Figure 4 This is a schematic diagram of the overall structure of a static touch unit according to an embodiment of this application.

[0039] Figure 5 This is a schematic diagram of the overall structure of the static touch unit according to an embodiment of this application from another perspective.

[0040] Figure 6 This is a bottom view of the static touch unit according to an embodiment of this application.

[0041] Figure 7 This is a schematic diagram of the contact component according to another embodiment of this application.

[0042] Figure 8 for Figure 2 A magnified structural diagram of part A in the middle.

[0043] Figure 9 for Figure 2 An enlarged structural diagram of part A in another embodiment.

[0044] Figures 10 to 13 These are schematic diagrams of the isolation components in different embodiments of this application.

[0045] Icon labels:

[0046] 1. Relay;

[0047] 10. Contact component; 20. Housing; 21. First fixing groove; 22. Second fixing groove; 30. Fixing member;

[0048] 100. Static contact unit; 110. Static contact element; 111. Connecting part; 1111. Hollowed-out groove; 1112. First fixing protrusion; 1113. Second fixing protrusion; 112. Electrical lead-out part; 120. Static conductive magnet; 121. First protrusion; 130. Static contact point;

[0049] 200. Moving contact unit; 210. Moving contact element; 211. Compression spring; 220. Moving magnetic conductor; 230. Moving contact point;

[0050] 300. Isolation components;

[0051] 500, Lead-out sheet; 510, Lead-out body; 520, Lead-out end; 530, Second bud. Detailed Implementation

[0052] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0053] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0054] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0056] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0057] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0058] Please see Figures 1 to 2 As shown, this application embodiment provides a contact component 10 and a relay 1 including the contact component 10. The relay 1 in this application embodiment can be an electromagnetic relay, but is not limited to this. Specifically, in this application embodiment, the relay 1 includes the contact component 10, and may also include a housing 20, an electromagnetic mechanism, and other components. The contact component 10 includes a stationary contact unit 100, a moving contact unit 200, and an isolator 300. The stationary contact unit 100 and the moving contact unit 200 of the contact component 10 are respectively connected to the corresponding circuit terminals of the relay 1, and cooperate with the electromagnetic mechanism and other components of the relay 1, so that the relay 1 can realize the circuit on / off control function. By using the contact component 10, the relay 1 in this application embodiment can effectively avoid the problem of excessive deformation of the moving contact 210 caused by the attraction between the stationary magnetic body 120 and the moving magnetic body 220 when a short-circuit current passes through, which is beneficial to improving the structural stability of the relay 1 and extending the service life of the relay 1.

[0059] Continue reading Figures 1 to 3 As shown, the contact assembly 10 includes a stationary contact unit 100, a moving contact unit 200, and an isolator 300.

[0060] The stationary contact unit 100 includes a stationary contact 110 and a stationary magnetic conductor 120. The stationary contact 110 is used to connect to an external load circuit. The stationary contact 110 has a stationary contact 130 that remains stationary, located on the side of the stationary contact 110 closer to the moving contact 210. The stationary contact 130 is used to make contact with the moving contact 230 to conduct electricity. The stationary magnetic conductor 120 is connected to the stationary contact 110. For example, the stationary magnetic conductor 120 can be connected and fixed to the stationary contact 110 by riveting, bonding, welding, snap-fitting, etc. The stationary magnetic conductor 120 is used to cooperate with the moving magnetic conductor 220 through magnetic attraction to ensure stable contact between the stationary contact 130 and the moving contact 230.

[0061] The moving contact unit 200 includes a moving contact 210 and a moving magnetic conductor 220. The moving contact 210 is used to connect to an external load circuit. Exemplarily, the moving contact 210 can be a resilient metal spring structure. One end of the moving contact 210 is fixed relative to the stationary contact 110, for example, it can be riveted and fixed inside the relay 1, remaining relatively stationary with respect to the stationary contact 110. The other end of the moving contact 210 can swing relative to the stationary contact 110, for example, it can move closer to or away from the stationary contact 110 under external force, where the external force can be an electromagnetic force or a mechanical force. The other end of the moving contact 210 has a moving contact 230, which can be a hemispherical or frustum-shaped protrusion with a higher conductivity than the moving contact 210. When the other end of the moving contact 210 swings, it causes the moving contact 230 to contact and conduct or separate from the stationary contact 130 on the stationary contact 110, thereby realizing the on / off control of the relay 1. The moving magnetic conductor 220 is connected to the moving contact 210. For example, the moving magnetic conductor 220 can be connected and fixed to the moving contact 210 by riveting, bonding, welding, snap-fitting, etc. The moving magnetic conductor 220 is used to cooperate with the stationary magnetic conductor 120 through magnetic attraction. The moving magnetic conductor 220 and the stationary magnetic conductor 120 are arranged opposite to each other, and an independent short-circuit ring can be formed between the moving magnetic conductor 220 and the stationary magnetic conductor 120. The magnetic interaction between the moving magnetic conductor 220 and the stationary magnetic conductor 120 can apply a force to the moving contact 210 to move it closer to the stationary contact 110, thereby maintaining stable contact between the moving contact 230 and the stationary contact 130 when the relay 1 is closed.

[0062] An isolator 300 is disposed between the moving magnetic conductor 220 and the stationary magnetic conductor 120, and the isolator 300 is configured to prevent the moving magnetic conductor 220 and the stationary magnetic conductor 120 from contacting each other.

[0063] It is understandable that if the magnetic attraction between the moving magnet 220 and the stationary magnet 120 is too large, for example, if a short circuit or other fault causes an increase in circuit current, resulting in an excessive magnetic attraction between the moving magnet 220 and the stationary magnet 120, the moving magnet 220 will exert an excessive force on the moving contact 210 toward the stationary contact 110. This can easily cause the moving contact 210 to deform, affecting its working condition and service life.

[0064] In this embodiment, through the above-described structural design, the isolator 300 is positioned between the moving magnetic material 220 and the stationary magnetic material 120, preventing them from directly contacting each other when the magnetic attraction force is excessive. On one hand, the isolator 300's blocking and limiting effect maintains a preset gap between the moving magnetic material 220 and the stationary magnetic material 120, preventing them from becoming too close together and causing excessive deformation of the moving contact 210, thus improving the reliability and service life of the relay 1. On the other hand, the isolator 300 reliably separates the moving magnetic material 220 from the stationary magnetic material 120, preventing direct contact that could cause a magnetic short circuit or magnetic shunting, thereby ensuring stable magnetic flux, maintaining stable magnetic attraction force, and ensuring stable and reliable contact between the moving contact 230 and the stationary contact 130.

[0065] Optionally, in some embodiments, the isolator 300 is made of an insulating material. Specifically, the isolator 300 disposed between the moving magnetic conductor 220 and the stationary magnetic conductor 120 is made of an insulating material, such as plastic, ceramic, insulating rubber, etc. In this embodiment, the isolator 300 made of an insulating material can effectively prevent excessive deformation of the moving contact 210, and can also effectively prevent the formation of additional conductive paths between the moving magnetic conductor 220 and the stationary magnetic conductor 120 due to contact, preventing unnecessary conductive losses, ensuring the accuracy of circuit conduction, and ensuring stable contact between the moving contact 230 and the stationary contact 130.

[0066] Furthermore, in some embodiments, the isolator 300 has a gap between itself and at least one of the stationary magnet 120 and the moving magnet 220, which can be used to adjust the magnetic attraction between the moving magnet 220 and the stationary magnet 120.

[0067] For example, see Figures 1 to 3 , Figures 8 to 9As shown, the isolator 300 is disposed between the moving magnetic body 220 and the stationary magnetic body 120, with a pre-existing gap H between them. In practical applications, the size of the gap H can be preset according to the magnitude of the current in the relay 1 circuit. Due to the gap H, when a change in current causes a change in the magnetic attraction between the moving magnetic body 220 and the stationary magnetic body 120, the moving magnetic body 220 can cause the moving contact 210 to move adaptively relative to the stationary contact 110. The gap H decreases or increases accordingly with the displacement of the moving magnetic body 220. Specifically, when the magnetic attraction increases, the moving magnetic body 220 moves closer to the stationary magnetic body 120, the gap H decreases, and the moving contact 210 and the stationary contact 110 become closer; when the magnetic attraction decreases, the moving magnetic body 220 moves away from the stationary magnetic body 120, the gap H increases, and the moving contact 210 moves further away from the stationary contact 110. Therefore, by reserving a gap H between the isolator 300 and the moving magnetic conductor 220, a buffer space can be provided for the movement of the moving contact 210 under magnetic attraction, avoiding excessive deformation or stress concentration of the moving contact 210 due to excessive force, ensuring the stable operation of the magnetic circuit between the moving magnetic conductor 220 and the stationary magnetic conductor 120, thereby improving the contact stability and conduction reliability of the moving contact 210 and the stationary contact 110.

[0068] It is understood that in other alternative embodiments, there may be a gap between the isolator 300 and the stationary magnet 120, or there may be gaps between the isolator 300 and the stationary magnet 120 and the moving magnet 220 respectively. The above structures can provide buffer space for the movement of the moving magnet 220, avoid rigid interference of the structure, and ensure that the relay 1 works stably and reliably.

[0069] Further, see Figures 2 to 3 As shown, in some embodiments, the relay 1 includes a housing 20 and a fixing member 30. The fixing member 30 is connected to the housing 20, and the isolator 300 of the contact assembly 10 is connected to the fixing member 30. The isolator 300 is configured to be fixed between the stationary magnetic body 120 and the moving magnetic body 220 via the fixing member 30. For example, the fixing member 30 can be directly connected to the housing 20 of the relay 1, or connected to other fixed components inside the housing 20, as long as it can stably support the isolator 300. Specifically, in this embodiment, the isolator 300 is connected to the housing 20 of the relay 1 via the fixing member 30. For example, the fixing member 30 and the housing 20 can be connected by welding, bonding, or integral molding. The isolator 300 is connected to the fixing member 30, for example, the isolator 300 and the fixing member 30 can be integrally molded or connected by welding, bonding, etc., so that the isolator 300 is disposed between the moving magnetic body 220 and the stationary magnetic body 120.

[0070] Therefore, by fixing the isolator 300 with the fixing member 30, the installation position of the isolator 300 is not affected by the movement position of the moving magnetic body 220, improving the positioning accuracy of the isolator 300 and ensuring that the isolator 300 can reliably prevent direct contact between the moving magnetic body 220 and the stationary magnetic body 120. Furthermore, the isolator 300 has a non-contact fit with both the moving magnetic body 220 and the stationary magnetic body 120, which allows for a pre-set gap between the isolator 300 and the moving magnetic body 220. This provides buffer space for the movement of the moving magnetic body 220 and the deformation of the moving contact 210, ensuring magnetic circuit stability and reliable magnetic attraction, and improving the operational stability of the relay.

[0071] Optionally, in other embodiments, the isolator 300 is connected to at least one of the stationary magnet 120 and the moving magnet 220. For example, the isolator 300 may be connected to the stationary magnet 120, and there is a gap between the isolator 300 and the moving magnet 220. Alternatively, the isolator 300 may also be connected to the moving magnet 220, and there is a gap between the isolator 300 and the stationary magnet 120. Furthermore, the isolator 300 may be connected to both the stationary magnet 120 and the moving magnet 220 simultaneously. In this embodiment, the isolator 300 is directly fixed to at least one of the stationary magnet 120 and the moving magnet 220, eliminating the need for other components to support the isolator 300. This simplifies the overall assembly of the contact assembly 10 and reduces assembly difficulty and manufacturing costs.

[0072] See Figure 3 , Figures 8 to 9 As shown, in some embodiments, the stationary contact 110 and the moving contact 210 are spaced apart along the thickness direction of the contact assembly 10. This spacing means that the stationary contact 110 and the moving contact 210 have a distance between them in the thickness direction of the contact assembly 10. Specifically, both the stationary contact 110 and the moving contact 210 have a generally sheet-like structure and are arranged in parallel. The thickness direction of the contact assembly 10 is the spacing direction between the stationary contact 110 and the moving contact 210, which is the Z-direction. An isolator 300 is disposed between the moving magnetic conductor 220 and the stationary magnetic conductor 120 along the thickness direction of the contact assembly 10, effectively preventing the moving magnetic conductor 220 and the stationary magnetic conductor 120 from contacting each other, thereby preventing the moving contact 210 from getting too close to the stationary contact 110 and causing excessive deformation.

[0073] Optionally, in some examples, the orthographic projection of at least one of the static magnet 120 and the moving magnet 220 along the thickness direction of the contact assembly 10 falls within the orthographic projection range of the isolator 300 along the thickness direction of the contact assembly 10. Specifically, in some embodiments, the orthographic projection of the isolator 300 along the thickness direction of the contact assembly 10 is a solid shape, for example, see [reference missing]. Figure 8 and Figure 10As shown, the isolator 300 is a solid flat plate. In this case, the orthographic projection of the isolator 300 along the thickness direction of the contact assembly 10 is a solid rectangle. This solid flat plate isolator 300 can uniformly block the contact between the moving magnetic material 220 and the stationary magnetic material 120. The orthographic projection of the moving magnetic material 220 along the thickness direction of the contact assembly 10 falls entirely within the orthographic projection range of the isolator 300 along the thickness direction of the contact assembly 10, allowing the isolator 300 to form a complete coverage of the moving magnetic material 220, thereby completely isolating the possibility of contact between the moving magnetic material 220 and the stationary magnetic material 120, resulting in a more thorough blocking effect. Of course, the orthographic projection of the stationary magnetic material 120 along the thickness direction of the contact assembly 10 can also fall entirely within the orthographic projection range of the isolator 300 along the thickness direction of the contact assembly 10 to further improve the blocking effect.

[0074] Optionally, in other examples, the orthographic projection of the stationary magnet 120 along the thickness direction of the contact assembly 10 and the orthographic projection of the isolator 300 along the thickness direction of the contact assembly 10 have a first region that does not coincide, meaning that the portion of the structure of the stationary magnet 120 corresponding to the first region is not obscured by the isolator 300. The orthographic projection of the moving magnet 220 along the thickness direction of the contact assembly 10 and the orthographic projection of the isolator 300 along the thickness direction of the contact assembly 10 have a second region that does not coincide, meaning that the portion of the structure of the moving magnet 220 corresponding to the second region is not obscured by the isolator 300. The first region and the second region partially or completely overlap, meaning there is an overlapping area between the first region and the second region, so that the stationary magnet 120 and the moving magnet 220 are not completely obscured by the isolator 300. For example, see [reference needed]. Figure 9 and Figure 11 As shown, the spacer 300 is a solid strip, and its orthographic projection along the thickness direction of the contact assembly 10 is a solid rectangle. There are two spacers 300, and the two strip-shaped spacers 300 form a hollow region, which constitutes at least a portion of the overlapping region of the first region and the second region. Within this hollow area, the isolator 300 does not obstruct the contact between the stationary magnet 120 and the moving magnet 220. At this time, the isolator 300 can still prevent the stationary magnet 120 and the moving magnet 220 from contacting each other. It can also reduce the material used in the isolator 300, reduce the production cost of the isolator 300, and at the same time minimize the influence of the isolator 300 on the magnetic field distribution between the stationary magnet 120 and the moving magnet 220. This is beneficial to ensuring the electromagnetic performance of the stationary magnet 120 and the moving magnet 220, and ensuring that the moving contact 230 and the stationary contact 130 can make stable and reliable contact under the magnetic attraction between the stationary magnet 120 and the moving magnet 220.

[0075] Of course, in some embodiments, the orthographic projection of the spacer 300 along the thickness direction of the contact assembly 10 can also be a perforated shape. For example, as Figure 12As shown, the spacer 300 is rectangular, and its orthographic projection along the thickness direction of the contact assembly 10 is a perforated square ring. For example, as... Figure 13 As shown, the isolator 300 is annular, and its orthographic projection along the thickness direction of the contact assembly 10 is a perforated annular ring. In this case, the isolator 300 only partially blocks the space between the stationary magnet 120 and the moving magnet 220, effectively ensuring the blocking effect while adapting to the production needs of relays 1 of different specifications. Simultaneously, it reduces raw material consumption and lowers manufacturing costs. This application, by providing an isolator 300 between the moving magnet 220 and the stationary magnet 120, effectively prevents direct contact between them, avoiding excessive deformation of the moving contact 210 due to excessive proximity to the stationary contact 110, and ensuring a stable and reliable contact structure. The isolator 300 can adopt various structural forms such as full-coverage flat plate, strip, square frame, and ring. It can effectively block the moving magnetic conductor 220 and the stationary magnetic conductor 120, reduce raw material consumption, and reduce production and manufacturing costs. At the same time, it can reduce the impact on the magnetic field distribution, ensure the stability of magnetic attraction, and make the contact between the moving contact 230 and the stationary contact 130 more reliable, which is conducive to improving the overall working stability and service life of the relay 1.

[0076] Optionally, in some embodiments, the stationary contact 110 has a split structure, including a connecting portion 111 and an electrical lead-out portion 112, with the electrical lead-out portion 112 used for current conduction. One end of the electrical lead-out portion 112 has a stationary contact 130, and the connecting portion 111 is connected to the electrical lead-out portion 112. The connecting portion 111 is located on the side of the stationary contact 130 away from the electrical lead-out portion 112, so that when the stationary contact 130 is electrically connected to the moving contact 230, the structure between the corresponding electrical lead-out portion 112 and the stationary contact 130 of the stationary contact 110 serves as the energized portion of the stationary contact 110, and the connecting portion 111 is the non-energized portion of the stationary contact 110. Furthermore, the stationary magnetic conductor 120 can be selectively connected to a preset position of the connecting portion 111 or directly connected to the non-contact area of ​​the electrical lead-out portion 112. For example, see... Figures 2 to 6 As shown, the stationary magnet 120 is connected to the connecting part 111, meaning the stationary magnet 120 is fixed to the non-energized portion of the stationary contact 110, thus separating the stationary magnet 120 from the electrical lead-out part 112. This helps reduce the impact of the stationary magnet 120 on the current conduction of the electrical lead-out part 112. Therefore, the split-type stationary contact 110 allows for the separate design of the connecting part 111 and the electrical lead-out part 112 based on different functional requirements for connection and conduction, thereby improving the overall performance of the stationary contact 110 and facilitating adaptation to different relay 1 structural layouts.

[0077] Optionally, see Figure 7As shown, in some embodiments, the stationary contact 110 is a one-piece structure, with a stationary contact 130 at one end and a stationary magnet 120 disposed between the other end of the stationary contact 110 and the stationary contact 130. This one-piece stationary contact 110 has a simpler structure, fewer processing steps, lower assembly difficulty, and higher structural stability. Furthermore, the cooperation between the stationary magnet 120 and the moving magnet 220 effectively ensures the working stability of the contact assembly 10.

[0078] Furthermore, in some embodiments, the connecting portion 111 is provided with a hollowed-out groove 1111. For example, see [reference needed]. Figure 5 As shown, the connecting part 111 is provided with a through slot 1111, which helps to reduce the weight of the connecting part 111 and the amount of material used in the connecting part 111, thereby reducing the cost. At the same time, the static magnetic conductor 120 is connected to the connecting part 111 and covers the through slot 1111, thereby making full use of the space in the area where the connecting part 111 is located, making the static contact unit 100 structure more compact.

[0079] Furthermore, see Figures 4 to 6 As shown, the connecting part 111 and the electrical lead-out part 112 are directly riveted together through the stationary contact 130 without the need for additional connecting structures, which makes the processing technology of the stationary contact 110 simpler and the cost lower.

[0080] Furthermore, see Figures 4 to 6 As shown, the stationary magnet 120 is provided with a plurality of first protrusions 121. The stationary magnet 120 is riveted to the connecting part 111 through the first protrusions 121 to ensure a stable connection. It can be understood that in other optional embodiments, the first protrusions 121 can also be provided on the connecting part 111, in which case the stationary magnet 120 and the connecting part 111 can also be riveted together through the first protrusions 121.

[0081] Furthermore, see Figures 1 to 2 , Figures 4 to 6As shown, a stationary magnet 120 is connected to a connecting portion 111. A first fixing protrusion 1112 is provided on the side of the connecting portion 111 away from the stationary magnet 120. A first fixing groove 21 is provided in the housing 20 to mate with the first fixing protrusion 1112. A second fixing protrusion 1113 is provided at the end of the connecting portion 111 away from the electrical lead-out portion 112. A second fixing groove 22 is provided in the housing 20 to mate with the second fixing protrusion 1113. There are two of each of the first fixing protrusion 1112 and the second fixing protrusion 1113. Of course, in other embodiments, the number of the first fixing protrusion 1112 and the second fixing protrusion 1113 may also be one, two, three, etc. When the contact component 10 is assembled on the relay 1, the first fixing protrusion 1112 and the second fixing protrusion 1113 can be connected to other components of the relay 1. For example, in this embodiment, the first fixing protrusion 1112 and the second fixing protrusion 1113 are respectively engaged with the first fixing groove 21 and the second fixing groove 22 of the housing 20 of the relay 1, thereby effectively ensuring the assembly stability of the contact component 10.

[0082] Furthermore, in some embodiments, the conductivity of the connecting portion 111 is lower than that of the electrical lead-out portion 112. Specifically, the electrical lead-out portion 112 can be made of a high-conductivity material, such as copper, to ensure current conduction efficiency, reduce the conductive loss of the stationary contact 110, and improve the overall conductivity of the contact assembly 10. Moreover, the connecting portion 111 can be made of a low-conductivity material, such as iron, to ensure structural rigidity, which is beneficial for effectively connecting and supporting the stationary magnet 120. At the same time, the iron connecting portion 111 is less expensive, thus reducing costs.

[0083] Furthermore, in some embodiments, the stationary magnet 120 and the connecting portion 111 are made of the same material. This effectively reduces problems such as inconsistent deformation and loose connections caused by material differences, which is beneficial to improving the stability of the connection between the stationary magnet 120 and the connecting portion 111 and the overall stability of the contact assembly 10. At the same time, since the stationary magnet 120 and the connecting portion 111 are made of the same material, the connecting portion 111 can play a magnetic guiding role, which helps to reduce the thickness of the stationary magnet 120, reduce material consumption, and reduce costs.

[0084] Furthermore, in some embodiments, the electrical lead-out portion 112 is made of a high-conductivity material such as copper, while the static magnet 120 and the connecting portion 111 are made of at least one of low-conductivity materials such as iron, cobalt, and nickel. This ensures both the magnetic conductivity of the static magnet 120 and the connecting portion 111, meeting the electromagnetic performance requirements of both the static magnet 120 and the moving magnet 220, and also guarantees the structural support capacity of the connecting portion 111.

[0085] Optionally, see Figure 1As shown, in some embodiments, the contact assembly 10 further includes a lead-out piece 500 for connecting to external lines, such as sampling signal lines. Specifically, the lead-out piece 500 includes a lead-out body 510 and a lead-out end 520. The lead-out body 510 is connected to a moving contact 210 disposed within the housing 20 of the relay 1, and the lead-out body 510 extends outside the housing 20 of the relay 1. The lead-out end 520 protrudes from the portion of the lead-out body 510 extending outside the housing 20, and is electrically connected to external lines for signal detection and other functions. The split lead-out piece 500 of this embodiment makes the current extraction structure more flexible. Compared to a one-piece lead-out piece 500, the split lead-out piece 500 is easier to manufacture, produces less waste, and has a lower cost.

[0086] Optionally, in some embodiments, the movable contact 210 and the lead-out piece 500 are riveted together by multiple rows of second protrusions 530, which are spaced apart along the length of the movable contact 210. For example, see [reference needed]. Figure 1 As shown, the lead-out body 510 of the lead-out piece 500 has two rows of second protrusions 530, which are spaced apart along the length of the movable contact 210, where the length of the movable contact 210 is the left-right direction shown in the figure. Each row of second protrusions 530 includes several protruding second protrusions 530 on the surface of the lead-out body 510. During assembly, the movable contact 210 is riveted to the lead-out piece 500 through the second protrusions 530, which not only ensures a stable connection but also reduces the current carrying capacity per unit of riveting, thereby reducing temperature rise. Of course, in other optional embodiments, the lead-out piece 500 can also be provided with three, four, or more rows of second protrusions 530, and the second protrusions 530 can also be provided on the movable contact 210, in which case riveting fixation can be achieved.

[0087] Optionally, see Figure 3 As shown, in some embodiments, the moving contact 210 includes multiple stacked compression springs 211. The multiple stacked compression springs 211 are tightly fitted together, and the number of stacked compression springs 211 can be selected according to the conductivity requirements of the contact assembly 10. The relay 1 can drive the compression springs 211 to move by pushing the card, thereby causing the moving contact 230 of the moving contact 210 to contact or disconnect with the stationary contact 130 of the stationary contact 110. In this embodiment, the use of multiple stacked compression springs 211 can improve the overall elastic force of the compression springs 211, further ensuring the stable and reliable contact between the moving contact 230 and the stationary contact 130. At the same time, without increasing the thickness of the compression springs 211, using multiple stacked thin compression springs 211 instead of a single thick spring can reduce the reaction force while ensuring the overall structural strength, reduce the deformation stress of the moving contact 210, and make the operation more flexible and the service life longer.

[0088] In summary, the contact component 10 and the relay 1 of the embodiments of this application have at least the following advantages and beneficial effects:

[0089] The relay 1 in this embodiment includes a contact assembly 10, which includes a stationary contact unit 100, a moving contact unit 200, and an isolator 300. The stationary contact unit 100 includes a stationary contact 110 and a stationary magnetic conductor 120, and the moving contact unit 200 includes a moving contact 210 and a moving magnetic conductor 220. The isolator 300 is disposed between the moving magnetic conductor 220 and the stationary magnetic conductor 120. The isolator 300 can both physically block and limit the distance between the moving magnetic conductor 220 and the stationary magnetic conductor 120, providing a reasonable buffer space for the deformation of the moving contact 210 and preventing it from undergoing excessive deformation, and effectively prevent the moving magnetic conductor 220 and the stationary magnetic conductor 120 from directly contacting each other, ensuring the stability of the magnetic gap and magnetic circuit, maintaining the magnetic attraction force required for the contact between the moving contact 230 and the stationary contact 130, and ensuring the stable and reliable conduction of the circuit. Meanwhile, the embodiments of this application improve the structural compactness, assembly convenience and overall performance of the contact assembly 10 by optimizing the structure of the stationary contact 110, the material selection and connection method of each component, and the connection and matching method, and by setting up and designing various types of isolation components 300. This not only reduces the production and manufacturing cost, but also adapts to the application requirements of relays 1 of different specifications, which is conducive to improving the working reliability, structural stability and service life of relays 1.

[0090] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A contact component, characterized in that, The contact component includes: A stationary contact unit, comprising a stationary contact element and a stationary magnetic conductor, wherein the stationary contact element has a stationary contact point and the stationary magnetic conductor is connected to the stationary contact element; A movable contact unit includes a movable contact element and a movable magnetic conductor. The movable contact element has a movable contact point that can make contact with the stationary contact point to conduct electricity. The movable magnetic conductor is connected to the movable contact element, and the movable magnetic conductor and the stationary magnetic conductor are arranged opposite to each other. An isolator is disposed between the moving magnetic conductor and the stationary magnetic conductor, and the isolator is configured to prevent the moving magnetic conductor and the stationary magnetic conductor from contacting each other.

2. The contact assembly according to claim 1, characterized in that, The insulating element is made of insulating material.

3. The contact assembly according to claim 1, characterized in that, The isolator has a gap with at least one of the stationary magnet and the moving magnet.

4. The contact assembly according to claim 1, characterized in that, The isolator is configured to be fixed between the moving magnetic conductor and the stationary magnetic conductor by a fixing member; Alternatively, the isolator is connected to at least one of the stationary magnet and the moving magnet.

5. The contact assembly according to any one of claims 1 to 4, characterized in that, The stationary contact and the moving contact are spaced apart along the thickness direction of the contact assembly, and the isolator is disposed between the moving magnetic material and the stationary magnetic material along the thickness direction.

6. The contact assembly according to claim 5, characterized in that, The orthographic projection of at least one of the static and dynamic magnetic conductors along the thickness direction falls within the orthographic projection range of the isolator along the thickness direction.

7. The contact assembly according to claim 5, characterized in that, The orthographic projection of the stationary magnetic conductor along the thickness direction and the orthographic projection of the isolator along the thickness direction have a first region that do not coincide, and the orthographic projection of the moving magnetic conductor along the thickness direction and the orthographic projection of the isolator along the thickness direction have a second region that do not coincide, and the first region and the second region partially or completely coincide.

8. The contact assembly according to claim 6 or 7, characterized in that, The orthographic projection of the spacer along the thickness direction is either solid or perforated.

9. The contact assembly according to claim 1, characterized in that, The stationary contact includes a connecting portion and an electrical lead-out portion. The electrical lead-out portion has the stationary contact point. The connecting portion is connected to the electrical lead-out portion, and the stationary magnetic conductor is connected to the connecting portion.

10. The contact assembly according to claim 9, characterized in that, The connecting part is provided with a hollowed-out groove; And / or, the connecting part and the electrical lead-out part are riveted together via the stationary contact; And / or, the static magnetic conductor is riveted to the connecting part.

11. The contact assembly according to claim 9, characterized in that, The stationary magnet is connected to the connecting part, and the connecting part has a first fixing protrusion on the side opposite to the stationary magnet.

12. The contact assembly according to claim 9, characterized in that, The end of the connecting portion away from the electrical lead-out portion is provided with a second fixing protrusion.

13. The contact assembly according to claim 9, characterized in that, The conductivity of the connecting part is less than the conductivity of the electrical lead-out part; Alternatively, the static magnet and the connecting part may be made of the same material.

14. The contact assembly according to claim 1, characterized in that, The stationary contact is provided at one end of the stationary contact member, and the stationary magnetic conductor is disposed between the other end of the stationary contact member and the stationary contact.

15. The contact assembly according to claim 1, characterized in that, The contact assembly further includes a lead-out piece, which includes a lead-out body and a lead-out end. The lead-out body is connected to the moving contact, and the lead-out end is connected to the lead-out body. The lead-out end is configured for electrical connection with an external circuit.

16. The contact assembly according to claim 15, characterized in that, The movable contact and the lead-out piece are riveted together by multiple rows of second protrusions, which are spaced apart along the length of the movable contact.

17. A relay, characterized in that, The relay includes the contact component as described in any one of claims 1-16.

18. The relay according to claim 17, characterized in that, The relay also includes a housing and a fixing member, the fixing member being connected to the housing, and the isolator of the contact assembly being connected to the fixing member.

19. The relay according to claim 18, characterized in that, The stationary contact of the contact assembly is provided with a first fixing protrusion, and the housing is provided with a first fixing groove for engaging with the first fixing protrusion. And / or, the stationary contact of the contact assembly is provided with a second fixing protrusion, and the housing is provided with a second fixing groove for engaging with the second fixing protrusion.

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