A contact and contactor

Abstract

The application provides a contact and a contactor, relates to the technical field of contactors, and is used for improving the contact tightness between a silver contact and a bearing plate, controlling the temperature rise of the contact, improving the mechanical performance, and prolonging the service life of the contact. The contact comprises the bearing plate and the silver contact. The bearing plate comprises a bearing segment and a riveting segment connected with each other. A through riveting hole is formed in the riveting segment of the bearing plate. The size of the riveting hole in the axial direction is 1.5 mm-2 mm. The silver contact comprises a riveting shaft and a contact segment connected with each other. After the end of the riveting shaft, which is far away from the contact segment, penetrates through the riveting hole, the riveting shaft is riveted to the bearing plate. The riveting shaft is in interference fit with the riveting hole. The diameter of the contact segment is greater than that of the riveting hole, and the side of the contact segment, which is close to the riveting segment, is tightly combined with the riveting segment. The contactor comprises the above contact.

Description

Technical Field

[0001] This application relates to the field of contactor technology, specifically to a contact and a contactor. Background Technology

[0002] A contactor is a versatile switching device that uses electromagnetic, pneumatic, or hydraulic principles to quickly disconnect or connect the current in the circuit it is connected to.

[0003] The contactor contacts have riveted carrier plates and silver dots, which are used to make or break contact with the corresponding contacts.

[0004] In the existing technology, after the silver contact and the carrier plate are riveted, gaps or even shaking may easily appear between the silver contact and the carrier plate, which will affect the temperature rise of the contact and reduce the contact's life and mechanical properties. Utility Model Content

[0005] This application provides a contact and a contactor for improving the contact tightness between the silver contact and the carrier plate, controlling the temperature rise of the contact, improving mechanical performance, and extending the life of the contact.

[0006] To achieve the above objectives, in a first aspect, this application provides a contact point including a carrier plate and a silver contact. The carrier plate includes a carrier section and a riveting section connected together. A through riveting hole is formed in the carrier plate in the riveting section. The axial dimension of the riveting hole is 1.5 mm-2 mm. The silver contact includes a riveting shaft and a contact section connected together. The end of the riveting shaft away from the contact section passes through the riveting hole and is riveted to the carrier plate. The riveting shaft is interference-fitted into the riveting hole. The diameter of the contact section is larger than the diameter of the riveting hole, and the side of the contact section closest to the riveting section is in close contact with the riveting section.

[0007] When the above technical solution is adopted, the riveting shaft is interference-fitted with the riveting hole, which allows the outer wall of the riveting shaft to be in close contact with the inner wall of the riveting hole. In this way, on the one hand, the close contact between the riveting shaft and the riveting hole can generate greater radial pressure and static friction, so that torque, axial force or bending moment can be reliably transmitted between the riveting shaft and the bearing plate, thereby enhancing the connection between the riveting shaft and the bearing plate.

[0008] On the other hand, the interference fit between the riveting shaft and the riveting hole makes it less likely for stress concentration points to exist between the outer wall of the riveting shaft and the riveting hole, resulting in higher fatigue resistance of the contact.

[0009] Furthermore, gaps or holes are less likely to appear between the outer wall of the riveting shaft and the inner wall of the riveting hole, and relative movement is less likely to occur between the riveting shaft and the riveting hole. This reduces the possibility of friction and relative movement between the riveting shaft and the bearing plate, thus ensuring the mechanical performance of the contact.

[0010] Furthermore, during the riveting process, the enormous impact or pressure is transmitted more evenly to the support plate through the interference fit, rather than being entirely borne by the final riveted edge. This avoids excessive stress concentration at the riveting joint, reducing the risk of cracking in the riveted section or deformation of the support plate.

[0011] Furthermore, the close contact between the outer wall of the riveting shaft and the inner wall of the riveting hole increases the contact area between the riveting shaft and the bearing plate, reduces the contact resistance between the silver point and the bearing plate, decreases the resistance of the contact, ensures that the contact can withstand a certain current, and avoids excessive temperature rise of the contact.

[0012] The diameter of the contact section is larger than the diameter of the rivet hole, which can prevent the contact section from sliding into the rivet hole and further prevent the contact section from coming out of the rivet hole.

[0013] The contact section is in close contact with the riveting section on the side closest to it. In this case, when the silver dot is riveted to the bearing plate, the riveting shaft is interference-fitted into the riveting hole, and the contact section is in close contact with the riveting section on the side closest to it.

[0014] At this point, precise axial and radial positioning of the silver point relative to the carrier plate can be achieved, allowing the silver point to be tightly connected to the carrier plate. At the same time, this makes the stress distribution between the silver point and the carrier plate more uniform, greatly improving the fatigue resistance and impact resistance of the contact and extending the service life of the contact.

[0015] Furthermore, this increases the contact area between the silver contact and the carrier plate, reduces the contact resistance between them, and decreases the contact resistance, ensuring that the contact can withstand a certain current and preventing excessive temperature rise. Simultaneously, it reduces unnecessary energy loss at the connection between the riveting shaft and the carrier plate, improving energy efficiency.

[0016] Furthermore, it should be noted that the rivet hole provided in this embodiment has an axial dimension of 1.5 mm-2 mm. This not only reduces the possibility of bending or tilting of the silver point during riveting when the rivet hole size is too large, ensuring the contact area between the silver point and the carrier plate and reducing the contact resistance of the contact point, but also reduces the probability that when the rivet hole is too small, the thickness of the riveting section is too thin, the resistance of the carrier plate is too high, and it cannot carry a large current. At the same time, it avoids the phenomenon that the riveting quality cannot be met when the rivet hole is too small in its axial dimension.

[0017] In one possible implementation, a groove is provided on the riveting section, and the groove corresponds to the riveting hole.

[0018] When using the above technical solution, the dimension of the bearing section in the third direction is larger than that of the riveting section in the third direction. This helps to ensure that the resistance of the bearing plate is low, thereby increasing the probability that the bearing plate can withstand a larger current.

[0019] In one possible implementation, the cross-sectional area of ​​the bearing section is S0 in the direction perpendicular to the riveting section. The area of ​​the contact section near the riveting section is S1. The cross-sectional area of ​​the riveting shaft is S2. The wall area of ​​the riveting hole is S3. S3 ≥ S2, and S2 + S1 ≥ S0.

[0020] By adopting the above technical solution, the contact area between the silver contact and the carrier plate can be ensured, the contact resistance between the silver contact and the carrier plate can be reduced, the resistance of the contact can be reduced, and the contact can withstand a higher rated current, thus avoiding excessive temperature rise of the contact. At the same time, it reduces useless energy loss at the connection between the silver contact and the carrier plate, thereby improving energy efficiency.

[0021] In one possible implementation, the groove is a through groove that passes through the riveting section in a first direction, which is perpendicular to the direction from the bearing section to the riveting section.

[0022] When the above technical solution is adopted, the groove is a through groove, which facilitates the processing of the groove. Moreover, when the contact section is located on the side of the bearing plate away from the groove, a larger clearance space can be provided for the rivet head during actual processing, reducing the possibility of interference with the rivet head.

[0023] In one possible implementation, the groove is a countersunk groove.

[0024] When adopting the above technical solution, the groove can be set as a through groove or a countersunk groove. This enriches the groove setting methods, expands the applicable range of the support plate, and facilitates selection and setting according to actual conditions.

[0025] In addition, the groove is designed as a countersunk groove, which can ensure the current flow area of ​​the carrier plate, reduce the resistance of the carrier plate, further reduce the resistance of the contact, ensure that the contact can withstand a higher rated current, and avoid excessive contact temperature rise.

[0026] In one possible implementation, the groove is located on the side of the riveting section away from the contact section.

[0027] When the above technical solution is adopted, the contact segment can protrude completely from the carrier plate, which can avoid the situation where the carrier plate collides with each other and the two contact segments cannot make contact and conduct electricity when the contact segment comes into contact with the contact segment of another contact point.

[0028] In one possible implementation, the end of the riveting shaft furthest from the contact section is located within a groove, the size of which is larger than the size of the riveting head of the riveting device.

[0029] When the above technical solution is adopted, the end of the riveting shaft furthest from the contact section is located in the groove, avoiding interference between the riveting shaft and other components of the contactor. Simultaneously, the overall size of the contact in the third direction can be reduced.

[0030] The groove size is larger than the rivet head size of the riveting equipment. This can prevent the bearing plate from interfering with the rivet head of the riveting equipment and making it impossible to complete the riveting work between the silver dot and the bearing plate.

[0031] In one possible implementation, the groove is located on the side of the riveting section closer to the contact section, and the size of the groove is larger than the size of the contact section. The end of the contact section furthest from the riveting axis is located outside the groove.

[0032] When adopting the above technical solution, the groove is located on the side of the riveting section closer to the contact section. Therefore, in specific implementations, the groove can be located on the side of the riveting section furthest from the contact section, or it can be located on the side of the riveting section closer to the contact section. This enriches the possible locations of the groove, expands the applicability of the bearing plate, and facilitates selection and placement based on actual conditions.

[0033] The groove is larger than the contact section, allowing the contact section to be accommodated within the groove and ensuring tight contact between the contact section and the riveting section. The end of the contact section furthest from the riveting axis is located outside the groove, while the other end protrudes from the groove. This reduces the possibility of the carrier plates colliding with each other and the two contact sections failing to make contact and conduct electricity when the contact section contacts the contact section of another contact point.

[0034] In one possible implementation, the support plate is a one-piece structure.

[0035] By adopting the above technical solution, stress concentration problems caused by connection methods such as screws or welding can be avoided, ensuring higher dimensional accuracy and consistency of the bearing plate and improving its structural strength. Furthermore, no machining of the bearing plate is required, reducing material usage and avoiding material waste.

[0036] Furthermore, the integrated structure reduces connection points, lowering the risk of failure due to loose connections, corrosion, or fatigue, and improving fatigue resistance. Additionally, it reduces the number of parts, further simplifying the assembly steps of the support plate, streamlining the structure and operational processes, and saving time and costs.

[0037] In one possible implementation, the silver dot is a single, integrated structure.

[0038] By adopting the above technical solution, stress concentration problems caused by connection methods such as screws or welding can be avoided, ensuring higher dimensional accuracy and consistency of the silver points and improving their structural strength. Furthermore, no machining of the silver points is required, reducing material usage and avoiding material waste.

[0039] Furthermore, the integrated structure reduces connection points, lowering the risk of failure due to loose connections, corrosion, or fatigue, and improving fatigue resistance. Additionally, it reduces the number of parts, further simplifying assembly steps, streamlining the structure and operational processes, and saving time and costs.

[0040] In a second aspect, this application provides a contactor that includes the contacts described in any possible implementation of the first aspect.

[0041] The technical effects of the contactor provided in the second aspect can be referred to the technical effects of the contact provided in the first aspect, and will not be elaborated here. Attached Figure Description

[0042] Figure 1 A schematic diagram of the contact structure provided in the embodiments of this application. Figure 1 .

[0043] Figure 2 A schematic diagram of the contact structure provided in the embodiments of this application. Figure 2 .

[0044] Figure 3 Schematic diagram of the structure of the support plate provided in the embodiments of this application Figure 1 .

[0045] Figure 4 Schematic diagram of the structure of the support plate provided in the embodiments of this application Figure 2 .

[0046] Figure 5 This is a schematic diagram of the structure of the silver dot provided in an embodiment of this application.

[0047] Figure 6 This is a diagram showing the silver dot viewed from below.

[0048] Figure 7 for Figure 3 A cross-sectional view at point AA.

[0049] Explanation of reference numerals in the attached figures: 1-Bearing plate, 11-Bearing section, 12-Riveting section, 13-Riveting hole, 14-Groove, 15-Connecting section, 2-Silver dot 21-Riveting shaft, 22-Contact section. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0052] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0053] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They 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. Therefore, they should not be construed as limitations on this application.

[0054] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0055] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0056] First, this application provides a contactor, which generally includes an electromagnetic system, a contact system, and an arc-extinguishing system. The electromagnetic system includes a stationary iron core, a moving iron core (armature), and a coil. When the coil is energized, the coil current generates a magnetic field, causing the stationary iron core to generate an electromagnetic attraction that draws the moving iron core to move.

[0057] A contact system typically includes main contacts and auxiliary contacts. The main contacts are usually three pairs of normally open contacts, used to connect and disconnect the circuit in which the contactor is located, and can carry large currents. Auxiliary contacts usually come in two types: normally open and normally closed, used for control circuits, and can only carry small currents.

[0058] Arc extinguishing systems typically include an arc-extinguishing chamber. When a large current is interrupted at the contacts, an electric arc is generated. The arc-extinguishing chamber can quickly extinguish the arc, preventing the contacts from burning out and accidents from occurring.

[0059] In practice, when a small control voltage is applied to the contactor coil, the coil generates a magnetic field, which attracts the moving iron core to move downwards. The moving iron core drives the contact support to move synchronously, causing all normally open contacts (including main contacts and auxiliary normally open contacts) to close and all normally closed contacts to open.

[0060] When the coil is de-energized, the magnetic field disappears. The moving iron core returns to its original position, synchronously driving the contact support, causing all normally open contacts to open and normally closed contacts to reset and close.

[0061] It should be noted that the contacts provided in the embodiments of this application can be used as main contacts or as auxiliary contacts.

[0062] like Figure 1 and Figure 2 As shown in the figure, this application embodiment provides a contact point, which includes a carrier plate 1 and a silver dot 2.

[0063] The silver dot 2 can be disposed on the support plate 1 by means of threaded connection, welding, etc. In the embodiment provided in this application, the silver dot 2 is riveted to the support plate 1.

[0064] In practice, the structure, size and material of the bearing plate 1 are not specifically limited.

[0065] like Figure 3 and Figure 4 As shown, the support plate 1 includes a support section 11 and a riveting section 12 connected to each other. In a specific implementation, the support plate 1 also includes a connecting section 15, with the connecting section 15 and the riveting section 12 located on opposite sides of the support section 11. The connecting section 15 has threaded holes to facilitate the connection of the contacts with other components of the contactor.

[0066] The connection method between the connecting segment 15 and the bearing segment 11 is not specifically limited here. For example, the connecting segment 15 and the bearing segment 11 can be connected together by welding, snap-fitting, or screw connection.

[0067] The connection method between the bearing section 11 and the riveting section 12 is not specifically limited here. For example, the bearing section 11 and the riveting section 12 can be connected together by welding, snap-fitting, or screw connection.

[0068] In one possible implementation, the support plate 1 is a one-piece structure. That is, the connecting section 15, the support section 11, and the riveting section 12 are formed together.

[0069] This not only avoids stress concentration problems caused by connection methods such as screws or welding, but also ensures higher dimensional accuracy and consistency of the bearing plate 1, thereby improving its structural strength. Furthermore, it eliminates the need for machining the bearing plate 1, reducing material usage and preventing material waste.

[0070] Furthermore, the integrated structure reduces connection points, lowering the risk of failure due to loose connections, corrosion, or fatigue, and improving fatigue resistance. Additionally, it reduces the number of parts, further simplifying the assembly steps of the support plate 1, streamlining the structure and operation process, and saving time and costs.

[0071] Please refer to Figure 3 and Figure 4 As shown, a through riveting hole 13 is provided on the bearing plate 1 in the riveting section 12. The riveting hole 13 is provided on the riveting section 12, and its axial dimension is 1.5 mm-2 mm.

[0072] It should be noted that, in the embodiments provided in this application, for ease of description, the length extension direction of the bearing plate 1, i.e. the direction from the bearing segment 11 to the riveting segment 12, is defined as the second direction, and the thickness direction of the bearing plate 1 is defined as the third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0073] It should be noted that in the embodiments provided in this application, the first direction, the second direction, and the third direction are only for the purpose of describing the positional relationship between the components included in the contact and are not specific limitations of this application.

[0074] The axial extension direction of the rivet hole 13 can be parallel to a third direction, that is, the axial extension direction of the rivet hole 13 is parallel to the thickness direction of the bearing plate 1.

[0075] In this case, the axial dimension of the riveting hole 13 can be equal to the thickness of the riveting section 12. That is, the thickness of the riveting section 12 is 1.5 mm to 2 mm.

[0076] For example, the axial dimensions of the riveting hole 13 can be 1.5 mm, 1.52 mm, 1.55 mm, 1.6 mm, 1.66 mm, 1.7 mm, 1.75 mm, 1.8 mm, 1.84 mm, 1.9 mm, 1.92 mm, 1.96 mm, 2 mm, etc. These axial dimensions of the riveting hole 13 are merely illustrative examples and are not intended as specific limitations; the actual dimensions should be considered.

[0077] In practice, the dimension of the bearing section 11 in the third direction can be equal to the dimension of the riveting section 12 in the third direction. Of course, the dimension of the bearing section 11 in the third direction may not be equal to the dimension of the riveting section 12 in the third direction. The specific implementation shall prevail.

[0078] Please refer to Figure 5 As shown, the silver dot 2 provided in this embodiment includes a riveting shaft 21 and a contact segment 22 connected to each other.

[0079] In specific implementation, the connection method between the riveting shaft 21 and the contact section 22 is not specifically limited here. For example, the riveting shaft 21 and the contact section 22 can be connected together by welding, snap-fitting, or screw connection.

[0080] The orthographic projection of the contact segment 22 onto the support plate 1 can be triangular, rectangular, or an irregular polygon. In the embodiments provided in this application, the orthographic projection of the contact segment 22 onto the support plate 1 can be circular, and the contact segment 22 can be a cylindrical structure or a frustum-shaped structure. In the embodiments provided in this application, the contact segment 22 is a frustum-shaped structure. Furthermore, the axial extension direction of the riveting shaft 21 is parallel to the axial extension direction of the frustum-shaped contact segment 22, both extending along a third direction.

[0081] The axis of the riveting shaft 21 can be collinear with the axis of the contact section 22 of the frustum-shaped structure. Of course, the axis of the riveting shaft 21 can also be non-collinear with the axis of the contact section 22 of the frustum-shaped structure.

[0082] In one possible implementation, the silver point 2 is a one-piece structure. That is, the riveting shaft 21 and the contact section 22 are machined together.

[0083] This not only avoids stress concentration issues caused by connection methods such as screws or welding, but also ensures higher dimensional accuracy and consistency of silver point 2, thereby improving its structural strength. Furthermore, it eliminates the need for machining silver point 2, reducing material usage and preventing waste.

[0084] Furthermore, the integrated structure reduces connection points, lowering the risk of failure due to loose connections, corrosion, or fatigue, and improving fatigue resistance. Additionally, it reduces the number of parts, further simplifying the assembly process of Silver Point 2, thereby saving time and costs.

[0085] Please combine Figure 1 and Figure 2 As shown, the end of the riveting shaft 21 away from the contact section 22 passes through the riveting hole 13 and is riveted to the bearing plate 1.

[0086] In practice, after one end of the riveting shaft 21 passes through the riveting hole 13, a riveting device can be used to rivet the silver point 2 and the carrier plate 1 together. Specifically, after one end of the riveting shaft 21 passes through the riveting hole 13, the riveting head of the riveting device can be aligned with the end of the riveting shaft 21 away from the contact section 22, and then stamped to rivet the silver point 2 to the carrier plate 1.

[0087] The riveting shaft 21 is interference-fitted into the riveting hole 13, allowing the outer wall of the riveting shaft 21 to be in close contact with the inner wall of the riveting hole 13. This close contact between the riveting shaft 21 and the riveting hole 13 generates significant radial pressure and static friction, ensuring reliable transmission of torque, axial force, or bending moment between the riveting shaft 21 and the bearing plate 1, thus enhancing the connection strength between the silver dot 2 and the bearing plate 1.

[0088] On the other hand, the riveting shaft 21 is interference-fitted with the riveting hole 13, and there is less stress concentration between the outer wall of the riveting shaft 21 and the riveting hole 13, which makes the fatigue resistance of the contact point higher.

[0089] Furthermore, gaps or holes are less likely to appear between the outer wall of the riveting shaft 21 and the inner wall of the riveting hole 13, and relative movement is less likely to occur between the riveting shaft 21 and the riveting hole 13. This reduces the possibility of friction and relative movement between the riveting shaft 21 and the bearing plate 1, thus ensuring the mechanical performance of the contact.

[0090] Furthermore, during the riveting process, the enormous impact or pressure is transmitted more evenly to the support plate 1 through the interference fit, rather than being entirely borne by the final riveted edge. This avoids excessive stress concentration at the riveting joint, reducing the risk of cracking of the riveted section 12 or deformation of the support plate 1.

[0091] Furthermore, the close contact between the outer wall of the riveting shaft 21 and the inner wall of the riveting hole 13 increases the contact area between the riveting shaft 21 and the support plate 1, reduces the contact resistance between the silver point 2 and the support plate 1, decreases the resistance of the contact, ensures that the contact can withstand a certain current, and avoids excessive temperature rise of the contact. At the same time, it reduces the useless energy loss at the connection between the riveting shaft 21 and the support plate 1, thus improving energy efficiency.

[0092] The diameter of the contact segment 22 is larger than the diameter of the riveting hole 13, which can prevent the contact segment 22 from sliding into the riveting hole 13 and further prevent the contact segment 22 from coming out of the riveting hole 13.

[0093] The contact section 22 is in close contact with the riveting section 12 on the side closest to the riveting section 12. In this case, when the silver dot 2 is riveted to the bearing plate 1, the riveting shaft 21 is interference-fitted with the riveting hole 13, and the contact section 22 is in close contact with the riveting section 12 on the side closest to the riveting section 12.

[0094] At this point, the silver point 2 can be precisely positioned axially and radially relative to the bearing plate 1, and the silver point 2 can be tightly connected to the bearing plate 1. At the same time, the stress distribution between the silver point 2 and the bearing plate 1 is more uniform, which greatly improves the fatigue resistance and impact resistance of the contact and can extend the service life of the contact.

[0095] Furthermore, it can increase the contact area between the silver point 2 and the carrier plate 1, reduce the contact resistance between the silver point 2 and the carrier plate 1, reduce the resistance of the contact, ensure that the contact can withstand a certain current, and avoid excessive temperature rise of the contact.

[0096] Furthermore, it should be noted that the rivet hole 13 provided in this embodiment has an axial dimension of 1.5 mm-2 mm. This not only reduces the possibility of the silver point 2 bending or tilting during riveting when the axial dimension of the rivet hole 13 is too large, ensuring the contact area between the silver point 2 and the carrier plate 1 and reducing the contact resistance of the contact point, but also reduces the probability that when the axial dimension of the rivet hole 13 is too small, the thickness of the riveting section 12 is too thin, the resistance of the carrier plate 1 is too high, and it cannot bear a large current. At the same time, it avoids the phenomenon that the riveting quality cannot be met when the axial dimension of the rivet hole 13 is too small.

[0097] As one possible implementation, such as Figure 3 As shown, the riveting section 12 provided in this embodiment of the application has a groove 14, which corresponds to the riveting hole 13.

[0098] This indicates that the dimension of the carrier section 11 in the third direction is larger than that of the riveting section 12 in the third direction. This helps to ensure that the resistance of the carrier plate 1 is low, which increases the probability that the carrier plate 1 can carry a larger current.

[0099] In practice, the dimensions and structure of the groove 14 are not specifically limited here, and the actual situation shall prevail.

[0100] It should be noted that this applies when the groove 14 is a through groove. During the actual processing, a plate-like material can be removed, and the dimension of this material in the third direction can be greater than 2 mm. Pre-punched holes are pre-machined in the riveting section 12, and then the dimension of the riveting section 12 in the third direction is reduced to 1.5 mm-2 mm using milling or stamping methods. Afterwards, riveting holes 13 are machined at the pre-punched hole locations according to the design dimensions.

[0101] In some embodiments, please combine Figure 3 , Figures 5 to 7 As shown, in the direction perpendicular to the second direction (i.e., the direction from the bearing section 11 to the riveting section 12), the area of ​​the cross-section A1 of the bearing section 11 is S0. The area of ​​the side A2 of the contact section 22 near the riveting section 12 is S1.

[0102] It should be noted that the area S1 of the side A2 of the contact segment 22 near the riveting segment 12 refers to the contact area between the contact segment 22 and the bearing plate 1. The area S1 of the side A2 of the contact segment 22 near the riveting segment 12 can also be understood as the area of ​​the orthographic projection of the contact segment 22 on the bearing plate 1 minus the cross-sectional area of ​​the riveting shaft 21.

[0103] like Figure 6 As shown, the area of ​​the cross-section A3 of the riveting shaft 21 is S2. The area of ​​the wall of the riveting hole 13 is S3. S3≥S2, and S2+S1≥S0.

[0104] This ensures a sufficient contact area between the silver point 2 and the carrier plate 1, reduces the contact resistance between them, decreases the contact resistance, and ensures the contact can withstand higher rated currents, preventing excessive contact temperature rise. Simultaneously, it reduces useless energy loss at the connection point between the silver point 2 and the carrier plate 1, improving energy efficiency.

[0105] In practice, the values ​​of S0, S1, S2, and S3 are not specifically limited here, but are subject to the actual situation.

[0106] In one example, such as Figure 3 As shown, the groove 14 is a through groove that passes through the riveting section 12 in a first direction, and the first direction is perpendicular to the direction from the bearing section 11 to the riveting section 12.

[0107] Thus, the groove 14 is a through groove, which not only facilitates the machining of the groove 14, but also, with the contact section 22 located on the side of the bearing plate 1 away from the groove 14, it can provide a larger clearance space for the rivet head during actual machining, reducing the possibility of interference with the rivet head.

[0108] In another example, groove 14 is a countersunk groove.

[0109] In practical implementation, groove 14 can be configured as either a through groove or a countersunk groove. This enriches the configuration options for groove 14, expands the applicability of the support plate 1, and facilitates selection and configuration based on actual conditions.

[0110] In addition, the groove 14 is set as a countersunk groove, which can ensure the current flow area of ​​the carrier plate 1, reduce the resistance of the carrier plate 1, further reduce the resistance of the contact, ensure that the contact can withstand a higher rated current, and avoid excessive temperature rise of the contact.

[0111] In practice, when the groove 14 is set as a countersunk groove, the countersunk groove can be a circular groove or a square groove, etc., but it is not limited to these in practice.

[0112] The axis of the countersunk groove can be collinear with the axis of the rivet hole 13. Of course, the axis of the countersunk groove can also be non-collinear with the axis of the rivet hole 13, depending on the actual situation.

[0113] In one possible implementation, please combine Figures 1 to 3 As shown, the groove 14 is located on the side of the riveting section 12 away from the contact section 22.

[0114] In this way, the contact segment 22 can protrude completely from the carrier plate 1, which can prevent the carrier plate 1 from colliding with each other when the contact segment 22 comes into contact with the contact segment 22 of another contact point, thus preventing the two contact segments 22 from making contact and conducting electricity.

[0115] As one possible approach, the end of the riveting shaft 21 furthest from the contact section 22 is located within a groove 14, the size of which is larger than the size of the riveting head of the riveting device.

[0116] At this time, the end of the riveting shaft 21 furthest from the contact section 22 is located within the groove 14, preventing the riveting shaft 21 from interfering with other components of the contactor. Simultaneously, it reduces the overall size of the contact in the third direction.

[0117] The size of the groove 14 is larger than the size of the rivet head of the riveting equipment, which can prevent the bearing plate 1 from interfering with the rivet head of the riveting equipment and making it impossible to complete the riveting work between the silver dot 2 and the bearing plate 1.

[0118] As an alternative, the groove 14 is located on the riveting section 12 near the contact section 22. Thus, in specific implementations, the groove 14 can be located on the riveting section 12 away from the contact section 22, or it can be located on the riveting section 12 near the contact section 22. This enriches the possible placement of the groove 14, expands the applicability of the support plate 1, and facilitates selection and placement based on actual conditions.

[0119] The size of the groove 14 is larger than the size of the contact segment 22, allowing the contact segment 22 to be accommodated within the groove 14, ensuring tight contact between the contact segment 22 and the riveting segment 12. The end of the contact segment 22 furthest from the riveting shaft 21 is located outside the groove 14, while the other end protrudes from the groove 14. This reduces the possibility of the carrier plate 1 colliding with each other and the two contact segments 22 failing to make contact and conduct electricity when the contact segment 22 contacts another contact segment 22.

[0120] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection. A physical connection can be a fixed connection, such as a connection secured by fasteners, such as a connection secured by screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

Claims

1. A contact point, characterized in that, include: A support plate, comprising a support section and a riveting section connected together; in the riveting section, a through riveting hole is provided on the support plate; The rivet hole has an axial dimension of 1.5 mm-2 mm; The silver dot includes a connected riveting shaft and a contact section; the end of the riveting shaft away from the contact section passes through the riveting hole and is riveted to the bearing plate; the riveting shaft is interference-fitted to the riveting hole; the diameter of the contact section is larger than the diameter of the riveting hole, and the side of the contact section closer to the riveting section is in close contact with the riveting section.

2. The contact according to claim 1, characterized in that, The riveting section has a groove, which corresponds to the riveting hole.

3. The contact according to claim 2, characterized in that, In a direction perpendicular to the bearing section to the riveting section, the cross-sectional area of ​​the bearing section is S0; the area of ​​the contact section near the riveting section is S1; the cross-sectional area of ​​the riveting shaft is S2; and the wall area of ​​the riveting hole is S3. S3≥S2, and S2+S1≥S0.

4. The contact according to claim 2, characterized in that, The groove is a through groove that penetrates the riveting section in a first direction, and the first direction is perpendicular to the direction from the bearing section to the riveting section.

5. The contact according to claim 2, characterized in that, The groove is a countersunk groove.

6. The contact according to claim 2, characterized in that, The groove is located on the side of the riveting section away from the contact section.

7. The contact according to claim 6, characterized in that, The end of the riveting shaft furthest from the contact section is located within the groove, the size of which is larger than the size of the riveting head of the riveting device.

8. The contact according to claim 2, characterized in that, The groove is located on the side of the riveting section near the contact section, and the size of the groove is larger than the size of the contact section; the end of the contact section away from the riveting shaft is located outside the groove.

9. The contact according to claim 1, characterized in that, The support plate is a one-piece structure; and / or, the silver dots are a one-piece structure.

10. A contactor, characterized in that, Including the contact as described in any one of claims 1 to 9.

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