A moving contact assembly and a relay
By employing a combination of moving springs and rigid conductive sheets arranged at intervals, flexible connections, and a reaction spring design in the moving contact assembly, the contradiction between large contact gaps and high short-circuit tolerance is resolved. Stable contact is achieved under large opening distances and high short-circuit tolerance, enhancing the safety and reliability of the relay.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MINGGUANG WANJIA LIANZHONG ELECTRONICS
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-24
AI Technical Summary
Existing moving contact components struggle to balance large contact gaps and high short-circuit withstand capability. In particular, cantilever beam structures are limited by the stress of the material at the root of the moving spring, and rotary structures lack sufficient Lorentz force during short circuits, making it difficult to meet the requirements for high short-circuit withstand capability.
The system employs a combination of a moving spring and a rigid conductive sheet arranged at intervals, connected by a flexible connector. The current directions of the conductive sheet and the spring are opposite. The Lorentz force generated by the short-circuit current increases the contact pressure. By rotating the rigid conductive sheet and the moving spring together, a small gap is maintained and a large Lorentz force is generated. Combined with a reaction spring, the rotation of the conductive sheet is restricted, thus satisfying the requirements of a large opening distance and high short-circuit withstand capability.
It achieves increased contact pressure and reduced contact resistance under conditions of large contact gap and high dielectric withstand pressure, preventing contact welding or explosion, and meeting the safety requirements of high short-circuit withstand.
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Figure CN224554288U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of relay technology, and in particular to a moving contact component and a relay. Background Technology
[0002] In current magnetic latching relays, the moving contact assembly typically employs a cantilever beam-type fixed structure, including a conductive sheet, a moving spring, and a moving contact. One end of the moving spring is fixedly connected to the conductive sheet, and the other end is fixedly connected to the moving contact. When energized, current flows between the moving contact, the moving spring, and the conductive sheet. The moving spring is elastic to meet the contact pressure requirements of overtravel. The conductive sheet and the moving spring form an n-shape, so that the current flow direction in the moving spring is opposite to the current flow direction in the conductive sheet, utilizing Lorentz force to increase contact pressure and improve short-circuit withstand capability. However, due to the limitation of material stress at the root of the moving spring, this moving contact assembly structure is not suitable for relay products requiring large contact gaps.
[0003] Some moving contact assemblies employ a structure consisting of a conductive sheet, a rigid moving spring, a flexible connector, and a moving contact, such as Chinese Patent 2018102934945. One end of the rigid moving spring is pivotally connected to the conductive sheet, and the other end is fixedly connected to the moving contact. The flexible connector connects the conductive sheet and the rigid moving spring to achieve conductivity. The conductive sheet, rigid moving spring, and flexible connector form an n-shape. A reaction spring is provided on the rigid moving spring, utilizing the rotating rigid moving spring to meet the design requirements of a large contact gap and excessive current. However, precisely because the moving spring rotates and the conductive sheet is fixed, while meeting the requirement of a large contact gap, the gap between the moving spring and the conductive sheet will be relatively large when the contact is conducting. When a short-circuit current passes through, the Lorentz force generated between the moving spring and the conductive sheet is relatively small, resulting in insufficient pressure applied to the moving spring, making it difficult to simultaneously meet the requirements of high short-circuit withstand.
[0004] Therefore, it is necessary to improve the moving contact component. Utility Model Content
[0005] The purpose of this utility model is to disclose a moving contact assembly with a large displacement of the moving spring, resulting in a large contact pressure due to the Lorentz force generated during a short circuit, which can meet the application requirements of large opening distance and high short-circuit resistance.
[0006] To achieve the above objectives, the movable contact assembly disclosed in this utility model includes: a movable spring lead-out, a flexible connector, a rigid conductive sheet, a movable spring sheet, and a movable contact, wherein...
[0007] The moving spring and the rigid conductive sheet are arranged alternately. The first end of the moving spring is connected to the first end of the rigid conductive sheet, and the second end of the moving spring is provided with a moving contact. The first end of the rigid conductive sheet is also provided with a rotating part for pivoting the base, so that the conductive sheet and the moving spring rotate together. The two ends of the flexible connector are respectively connected to the second end of the rigid conductive sheet and the lead-out foot of the moving spring, so that the current flow direction in the conductive sheet and the moving spring is opposite, thereby increasing the contact pressure by utilizing the Lorentz force generated when the short-circuit current flows through the conductive sheet and the moving spring.
[0008] As an alternative implementation, the movable spring and the rigid conductive sheet are arranged in parallel, or the included angle between the movable spring and the rigid conductive sheet is between 0 and 10°.
[0009] As an optional implementation, the rigid conductive sheet includes a first straight section, a bent section, and a second straight section. The bent section is connected between the first and second straight sections. The first and second straight sections are parallel to each other. The first end of the movable spring is fixed to the first straight section. The flexible connector is connected to the second straight section. The movable spring and the second straight section maintain a gap.
[0010] As an optional implementation, the second end of the rigid conductive sheet is provided with a clearance portion corresponding to the position of the moving contact.
[0011] As an optional implementation, the clearance portion includes a clearance groove, which is formed by an inward recess of the rigid conductive sheet facing the movable spring sheet; and / or, the clearance portion includes a clearance notch, which penetrates the rigid conductive sheet along the thickness direction.
[0012] As an optional implementation, the rotating part includes a connector and a first rotating shaft. The connector is fixed to the first end of the rigid conductive sheet, and the first rotating shaft is connected to the connector.
[0013] As an optional implementation, the connector is U-shaped, with the middle part of the connector fixed to the side of the rigid conductive sheet facing away from the moving spring sheet, and the two sides of the connector extending along the thickness direction of the rigid conductive sheet. The two sides of the connector are also provided with first shaft holes for the first rotating shaft to pass through.
[0014] As an optional implementation, the second end of the moving spring is further provided with a reaction spring for connecting with the pusher. The reaction spring protrudes at least partially from the second end of the rigid conductive sheet. The second end of the rigid conductive sheet is provided with an abutment portion for abutting or disengaging from the pusher, so that the pusher restricts the rigid conductive sheet when contact pressure is generated during overtravel.
[0015] As an optional implementation, the reaction spring includes a main body, an ear piece, and a spring piece. The ear piece and the spring piece are respectively disposed on both sides of the main body. The ear piece is provided with an oblong hole for limiting the pusher, and the spring piece is used to elastically resist the pusher.
[0016] This utility model also discloses a relay, which uses the moving contact component as described above.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0018] The movable contact assembly provided by this utility model allows the rigid conductive sheet and the movable spring to rotate and swing together around the rotating part of the first end of the rigid conductive sheet. The flexible connector is flexible and can swing along with the second end of the rigid conductive sheet, and the current flow directions in the rigid conductive sheet and the movable spring are opposite. In this way, the movement of the movable spring is no longer limited by the stress at its root, which can meet the application requirements of large contact gap and high dielectric pressure resistance. At the same time, since the rigid conductive sheet and the movable spring rotate together, the movement of the movable spring will not cause the gap between the rigid conductive sheet and the movable spring to increase. This gap can be kept within a small range. Therefore, when a short-circuit current passes between the rigid conductive sheet and the movable spring, a large Lorentz force can be generated on the movable spring, thereby generating an additional large contact pressure between the closed contacts, which meets the application requirements of high short-circuit pressure resistance. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the structure of the moving contact component according to an embodiment of the present utility model.
[0021] Figure 2 This is an exploded view of the moving contact component according to an embodiment of the present invention.
[0022] Figure 3 This is a schematic diagram of the connection between the rigid conductive sheet and the movable spring sheet in an embodiment of this utility model.
[0023] Figure 4 for Figure 3 The diagram shows the flow path of the structure when a short-circuit current passes through it.
[0024] Figure 5 This is a schematic diagram of the reaction spring in an embodiment of the present invention.
[0025] Figure 6 This is a schematic diagram of the state of the moving contact component in an embodiment of the present invention when the contact is disconnected.
[0026] Figure 7This is a schematic diagram of the state of the moving contact component in an embodiment of the present invention when the contact is turned on.
[0027] Explanation of key figure labels:
[0028] 1. Spring lead-out foot; 2. Flexible connector; 3. Rigid conductive sheet; 31. First straight section; 32. Bending section; 33. Second straight section; 34. Rotating part; 341. Connector; 342. First rotating shaft; 343. First shaft hole; 35. Clearance part; 351. Clearance groove; 352. Clearance notch; 36. Abutting part; 4. Moving spring; 41. First riveting hole; 5. Moving contact; 51. Rivet post; 6. Reaction spring; 61. Main body; 611. Second riveting hole; 62. Ear piece; 621. Waist-shaped hole; 63. Spring piece; 64. Hook; 7. Stationary contact; 8. Pushing part; 81. First limiting post; 82. Abutting platform. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0031] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.
[0032] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.
[0033] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.
[0034] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.
[0035] See Figure 1 and Figure 2 This utility model discloses a moving contact assembly, including a moving spring lead-out foot 1, a flexible connector 2, a rigid conductive sheet 3, a moving spring 4, and a moving contact 5. The moving spring 4 and the rigid conductive sheet 3 are arranged at intervals. The first end of the moving spring 4 is connected to the first end of the rigid conductive sheet 3. Specifically, the first end of the moving spring 4 is fixed to the first end of the rigid conductive sheet 3 by welding or riveting. The second end of the moving spring 4 is provided with a moving contact 5. The first end of the rigid conductive sheet 3 is also provided with a rotating part 34. When applied to a relay, the rotating part 34 is pivotally connected to the base, so that the rigid conductive sheet 3 and the moving spring 4 rotate together. The two ends of the flexible connector 2 are respectively connected to the second end of the rigid conductive sheet 3 and the moving spring lead-out foot 1, so that the current flow direction in the rigid conductive sheet 3 and the moving spring 4 is opposite. The flexible connector 2 is preferably made of flexible braided metal wire or multi-layered stacked metal foil to achieve electrical connection and has the flexibility to follow the swing of the second end of the rigid conductive sheet 3. The moving contact assembly can be used in a relay. Driven by the pusher 8, it rotates or swings toward or away from the stationary contact 7. Preferably, the pusher 8 can be connected to the moving spring 4 and can also abut against the rigid conductive sheet 3 when the contact is on, so as to limit the rigid conductive sheet 3.
[0036] by Figure 4 When the indicated direction is used as a reference, the movable spring 4 and the rigid conductive sheet 3 are spaced apart from each other. The first end of the movable spring 4 is its lower end, and the second end of the movable spring 4 is its upper end. The first end of the rigid conductive sheet 3 is its lower end, and the second end of the rigid conductive sheet 3 is its upper end. That is, the lower end of the movable spring 4 is connected to the lower end of the rigid conductive sheet 3. The lower end of the rigid conductive sheet 3 is also provided with a rotating part 34. The upper end of the movable spring 4 is provided with a movable contact 5. The flexible connector 2 is connected to the upper end of the rigid conductive sheet 3.
[0037] Thus, the rigid conductive plate 3 and the moving spring 4 rotate and oscillate together around the pivot point of the rigid conductive plate 3 to meet the isolation and safety requirements of the power distribution network for the relay's large contact gap and high dielectric withstand voltage, such as a contact gap ≥ 5.5 mm and a dielectric withstand voltage ≥ 4000 V. Furthermore, the rigid conductive plate 3 and the moving spring 4 are configured in a V-shape or U-shape, so that the current flow directions in the rigid conductive plate 3 and the moving spring 4 are opposite. This allows the Lorentz force generated when the short-circuit current flows through the rigid conductive plate 3 and the moving spring 4 to increase the contact pressure. Specifically, when the contacts are conducting, the gap between the rigid conductive sheet 3 and the moving spring 4 can be kept within a small range. When a short-circuit current passes between the rigid conductive sheet 3 and the moving spring 4, a large Lorentz force can be generated on the moving spring 4, thereby generating an additional large contact pressure between the closed contacts. This will reduce the contact resistance between the contacts and prevent the moving contact 5 from being repelled by the strong short-circuit current, avoiding contact welding or explosion, and meeting the safety requirements of high short-circuit resistance, such as short-circuit current ≥3000A.
[0038] See Figure 4 In order to better provide additional contact pressure, preferably, the moving spring 4 and the rigid conductive sheet 3 are arranged in parallel, so that when the short-circuit current flows through the rigid conductive sheet 3 and the moving spring 4, the Lorentz force generated is uniformly applied to the moving spring 4.
[0039] Of course, the moving spring 4 and the rigid conductive sheet 3 can also form a certain small angle, such as between 0-10°, and be arranged in a basically parallel or nearly parallel manner.
[0040] See Figures 1 to 4 To better control the gap between the rigid conductive sheet 3 and the movable spring 4, this embodiment also optimizes the shape of the rigid conductive sheet 3. Specifically, the rigid conductive sheet 3 includes a first straight segment 31, a bent segment 32, and a second straight segment 33. The bent segment 32 is connected between the first straight segment 31 and the second straight segment 33. The first straight segment 31 and the second straight segment 33 are parallel. The first end of the movable spring 4 is fixed to the first straight segment 31, and the flexible connector 2 is connected to the second straight segment 33. Specifically, one end of the flexible connector 2 is welded to the end of the second straight segment 33 and faces away from the movable contact 5. The movable spring 4 and the second straight segment 33 maintain a gap, preferably 1.5-3mm, and more preferably 2mm. Thus, by optimizing the shape of the rigid conductive sheet 3, there is no need to further improve the movable spring 4. The shape of the rigid conductive sheet 3 is simple to produce, which helps to save costs. Of course, if necessary, the shape of the movable spring 4 can be further improved to meet the requirements of the gap design.
[0041] See Figures 2 to 4In addition, a clearance portion 35 is provided at the second end of the rigid conductive sheet 3. The clearance portion 35 corresponds to the position of the moving contact 5 to prevent the moving contact 5 from conducting with the rigid conductive sheet 3 (such as conducting when static or when rebounding). Since there are two moving contacts 5 in this embodiment, the clearance portion 35 may include a clearance groove 351 and a clearance notch 352. The clearance groove 351 corresponds to the position of one of the moving contacts 5, and the clearance notch 352 corresponds to the position of the other moving contact 5. The clearance groove 351 is formed by indentation from the side of the rigid conductive sheet 3 facing the moving spring sheet 4, and the clearance notch 352 penetrates the rigid conductive sheet 3 along the thickness direction. At this time, the connection position between the flexible connector 2 and the rigid conductive sheet 3 can be located in the area between the clearance groove 351 and the clearance notch 352. The clearance groove 351 also has the function of serving as an abutment portion 36 on the back side to abut against the pusher 8, thereby restricting the rigid conductive sheet 3 when the contact is conducting.
[0042] It should be noted that, depending on the number of moving contacts 5 and other design requirements, only clearance grooves 351 or clearance notches 352 may be provided. The number of clearance grooves 351 or clearance notches 352 depends on the needs.
[0043] See Figures 1 to 3 To achieve the pivotal connection between the rigid conductive sheet 3 and the base, one optional solution adopted in this embodiment is as follows: the rotating part 34 includes a connecting member 341 and a first rotating shaft 342. The connecting member 341 is fixed to the first end of the rigid conductive sheet 3, and the first rotating shaft 342 can be fixed to the connecting member 341. In this case, the first rotating shaft 342 will be rotatably engaged with the base. Alternatively, the first rotating shaft 342 can be rotatably connected to the connecting member 341. In this case, the first rotating shaft 342 can be rotatably engaged or fixedly engaged with the base. Under the action of the pushing member 8, the rigid conductive sheet 3 and the movable spring 4 will rotate and swing around the axis of the first rotating shaft 342. More specifically, the connecting member 341 is U-shaped. The middle part of the connecting member 341 is fixed to the side of the rigid conductive sheet 3 facing away from the movable spring 4. The two sides of the connecting member 341 extend along the thickness direction of the rigid conductive sheet 3, and the two sides of the connecting member 341 are also provided with first shaft holes 343 for the first rotating shaft 342 to pass through. In this way, the rigid conductive sheet 3 can be pivotally connected to the base without having to bend it to form a lateral lug that mates with the first rotating shaft 342, which is convenient for production.
[0044] See Figures 1 to 5 In this embodiment, the following optimizations were made to the moving touch component:
[0045] The moving contact assembly also includes a reaction spring 6, which is disposed at the second end of the moving spring 4. The reaction spring 6 at least partially protrudes from the second end of the rigid conductive sheet 3, thereby avoiding interference between the reaction spring 6 and the rigid conductive sheet 3. Specifically, the length of the moving spring 4 is greater than the length of the rigid conductive sheet 3, and at least part of the reaction spring 6 is located at the protruding part of the moving spring 4. When applied to a relay, the reaction spring 6 can be connected to the pusher 8, and the second end of the rigid conductive sheet 3 also abuts against or disengages from the pusher 8. When the moving contact 5 and the stationary contact 7 are connected, the pusher 8 pushes the reaction spring 6 to elastically deform to generate contact pressure, and the pusher 8 restricts the rigid conductive sheet 3.
[0046] Thus, as Figure 7 As shown, when a short-circuit current flows through the rigid conductive sheet 3 and the moving spring 4, generating a Lorentz force, the rigid conductive sheet 3 is restricted by the pushing member 8 from rotating away from the stationary contact 7, ensuring that the gap between the moving spring 4 and the rigid conductive sheet 3 does not passively expand, thereby ensuring that the additional contact pressure remains at a high value. When the contact is open, as... Figure 6 As shown, the rigid conductive sheet 3 is disengaged from the pusher 8, and the pusher 8 drives the moving spring 4 to swing through the reaction spring 6. The rigid conductive sheet 3 swings in accordance with the swing of the moving spring 4.
[0047] The significance of combining the rotary rigid conductive sheet 3 and the moving spring 4 with the reaction spring 6 is that, when the moving contact assembly is applied to the relay, it can provide contact pressure and limit the rigid conductive sheet 3 when the contact is closed. Furthermore, the contact pressure during overtravel is mainly or entirely provided by the reaction spring 6. In this way, the moving spring 4 only needs a small amount of deformation or no deformation at all. Therefore, the gap between the rigid conductive sheet 3 and the moving spring 4 can be made very small, without the need to reserve a large deformation space for the moving spring 4, which is conducive to further improving its high short-term resistance performance. On the other hand, when the contact is open, it can also limit the rebound of the moving spring 4.
[0048] Combined Figure 5In this embodiment, the reaction spring 6 includes a main body 61, which is attached to the surface of the movable spring 4. The second end of the movable spring 4 is provided with a first riveting hole 41, and the main body 61 is provided with a second riveting hole 611. The rivet 51 of the movable contact 5 passes through the first riveting hole 41 and the second riveting hole 611 in sequence and forms a fixation, so as to fix the reaction spring 6 to the movable spring 4. In order to prevent the reaction spring 6 from deflecting, the upper edge of the main body 61 is also bent to form a hook 64. The hook 64 hooks onto the edge of the second end of the movable spring 4. In this way, two restrictive areas are formed between the main body 61 and the movable spring 4, thereby preventing the reaction spring 6 from deflecting around the axis of the movable contact 5. In order to realize the connection between the reaction spring 6 and the pusher 8, the main body 61... The body 61 has an ear piece 62 and a spring piece 63 on its two sides respectively. The ear piece 62 extends along the thickness direction of the moving spring 4, and the spring piece 63 extends obliquely toward the ear piece 62. The spring piece 63 elastically abuts against the first end face of the pusher 8. The ear piece 62 is provided with a waist-shaped hole 621, and the pusher 8 is provided with a first limiting post 81 passing through the waist-shaped hole 621. In this way, by utilizing the abutting cooperation between the pusher 8 and the spring piece 63, as well as the cooperation between the waist-shaped hole 621 and the first limiting post 81, the pusher 8 can push the spring piece 63 to deform during overtravel, thereby generating contact pressure. When the contact is broken, it can prevent the pusher 8 and the reaction spring 6 from separating. The pusher 8 will pull the reaction spring 6, thereby causing the moving spring 4 to rotate, thus limiting the rebound of the moving spring 4.
[0049] See Figure 6 and Figure 7 To achieve the cooperation between the rigid conductive sheet 3 and the pushing member 8, the preferred solution adopted in this embodiment is as follows: the pushing member 8 is provided with an abutment platform 82, which extends along the direction toward the rigid conductive sheet 3 to the side of the rigid conductive sheet 3 away from the moving spring 4; the second end of the rigid conductive sheet 3 is provided with an abutment portion 36, which is preferably the back side of the clearance groove 351. Figure 6 or Figure 7 The direction shown is for reference. When the moving contact 5 and the stationary contact 7 are connected, the abutting platform 82 and the abutting part 36 abut against each other, thereby restricting the rigid conductive sheet 3 from rotating clockwise. When the moving contact 5 and the stationary contact 7 are disconnected, the abutting platform 82 and the abutting part 36 disengage.
[0050] It should be noted that in other preferred embodiments, the connection between the pusher 8 and the moving contact assembly can also be as follows: the pusher 8 is only connected to the rigid conductive sheet 3, and the pusher 8 is not connected to the moving spring 4. Specifically, the reaction spring 6 can be disposed on the rigid conductive sheet 3, and the pusher 8 is connected to the reaction spring 6. In this case, the contact pressure during overtravel can be provided by the reaction spring 6, or it can be provided by the reaction spring 6 and the moving spring 4 together. The pusher 8 can also be pivotally connected to the rigid conductive sheet 3. In this case, the contact pressure during overtravel is provided by the moving spring 4. The gap between the rigid conductive sheet 3 and the moving spring 4 needs to be made slightly larger to meet the space required when the moving spring 4 deforms. Or other connection methods that can realize the connection between the pusher 8 and the rigid conductive sheet 3, so that the pusher 8 can drive the rigid conductive sheet 3 to swing, will not be described in detail here.
[0051] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.
Claims
1. A dynamic touch component, characterized in that, include: The components include a moving spring lead-out pin, a flexible connector, a rigid conductive sheet, a moving spring, and a moving contact. The movable spring and the rigid conductive sheet are arranged at intervals. The first end of the movable spring is connected to the first end of the rigid conductive sheet, and the second end of the movable spring is provided with the movable contact. The first end of the rigid conductive sheet is also provided with a rotating part for pivoting the base, so that the conductive sheet and the movable spring rotate together. The two ends of the flexible connector are respectively connected to the second end of the rigid conductive sheet and the movable spring lead, so that the current flow direction in the conductive sheet and the movable spring is opposite, thereby increasing the contact pressure by utilizing the Lorentz force generated when the short-circuit current flows through the conductive sheet and the movable spring.
2. The moving contact component according to claim 1, characterized in that, The movable spring and the rigid conductive sheet are arranged in parallel, or the included angle between the movable spring and the rigid conductive sheet is between 0 and 10°.
3. The moving contact component according to claim 2, characterized in that, The rigid conductive sheet includes a first straight section, a bent section, and a second straight section. The bent section is connected between the first straight section and the second straight section. The first straight section and the second straight section are parallel. The first end of the movable spring is fixed to the first straight section. The flexible connector is connected to the second straight section. The movable spring and the second straight section maintain a gap.
4. The moving contact assembly according to claim 1, characterized in that, The second end of the rigid conductive sheet is provided with a clearance portion corresponding to the position of the moving contact.
5. The moving contact assembly according to claim 4, characterized in that, The clearance portion includes a clearance groove, which is formed by an inward recess of the rigid conductive sheet facing the movable spring sheet; and / or, the clearance portion includes a clearance notch, which penetrates the rigid conductive sheet along the thickness direction.
6. The moving contact assembly according to claim 1, characterized in that, The rotating part includes a connector and a first rotating shaft. The connector is fixed to the first end of the rigid conductive sheet, and the first rotating shaft is connected to the connector.
7. The moving contact assembly according to claim 6, characterized in that, The connector is U-shaped, with its middle portion fixed to the side of the rigid conductive sheet facing away from the moving spring. Both sides of the connector extend along the thickness direction of the rigid conductive sheet, and each side of the connector is also provided with a first shaft hole for the first rotating shaft to pass through.
8. The moving contact assembly according to claim 1, characterized in that, The second end of the moving spring is also provided with a reaction spring for connecting with the pusher. The reaction spring at least partially protrudes from the second end of the rigid conductive sheet. The second end of the rigid conductive sheet is provided with an abutment portion for abutting or disengaging from the pusher, so that the pusher restricts the rigid conductive sheet when contact pressure is generated during overtravel.
9. The moving contact assembly according to claim 8, characterized in that, The reaction spring includes a main body, an ear piece, and a spring piece. The ear piece and the spring piece are respectively disposed on both sides of the main body. The ear piece is provided with an oblong hole for limiting the pusher. The spring piece is used to elastically resist the pusher.
10. A relay, characterized in that, The application has the motion contact component as described in any one of claims 1-9.