Relay contact structure and riveting process

Abstract

The invention relates to a relay contact structure and a riveting process, and relates to the technical field of relays, the contact structure comprises a static sheet and a silver alloy contact, the static sheet is provided with a mounting hole, the mounting hole is coaxially provided with a clamping groove, and the diameter of one end, close to the mounting hole, of the clamping groove is larger than that of one end, away from the mounting hole, of the clamping groove; the silver alloy contact comprises a connecting column, a large circle and a small circle, the connecting column is coaxially inserted and matched with the mounting hole, a clamping part clamped and matched with the clamping groove is formed on the large circle through riveting extrusion, and the clamping part and the large circle abut against the clamping groove under the pushing action of the clamping groove for positioning; and the small circle is formed by riveting and clings to the static sheet for positioning. According to the invention, the clamping part is formed after large circle riveting, and the clamping part is clamped and installed on the side wall of the clamping groove to form an inverted buckle structure, so that the conductive area can be increased, and the service life of the relay is prolonged.

Description

Technical Field

[0001] This application relates to the technical field of relays, and in particular to a relay contact structure and riveting process. Background Technology

[0002] The stationary contact and the silver alloy contact are important conductive structures that make up a relay. The stationary contact is a fixed conductive component in the contact system, and the silver alloy contact is a small conductive component riveted to the stationary contact.

[0003] After traditional riveting, the contact points are squeezed out, resulting in a loose fit between the silver alloy contacts and the stationary plate, leaving gaps. As the relay is used, these gaps will widen, reducing the conductive surface area and increasing the temperature, which will seriously affect the relay's lifespan. Summary of the Invention

[0004] To improve the service life of relays, this application provides a relay contact structure and riveting process.

[0005] Firstly, this application provides a relay contact structure, which adopts the following technical solution: A relay contact structure includes a stationary plate and a silver alloy contact. The stationary plate has a mounting hole, and a snap-fit ​​groove is coaxially formed on the mounting hole. The diameter of the snap-fit ​​groove at the end near the mounting hole is larger than the diameter at the end away from the mounting hole. The silver alloy contact includes a connecting post, a large circle, and a small circle. The connecting post is coaxially inserted into the mounting hole. The large circle has a snap-fit ​​portion formed by riveting and pressing, which engages with the snap-fit ​​groove. The snap-fit ​​portion and the large circle are pressed against the snap-fit ​​groove for positioning under the pushing action of the snap-fit ​​groove. The small circle is formed by riveting and is tightly attached to the stationary plate for positioning.

[0006] By adopting the above technical solution, the stationary plate and the silver alloy contact are placed separately, and then the silver alloy contact is riveted to the stationary plate. During the riveting process, the connecting post passes through the mounting hole for guidance and positioning, and the large circle abuts against the bottom of the snap-fit ​​groove. At the same time, the large circle and the connecting post are riveted together, so that the large circle deforms and expands during the riveting process to form a snap-fit ​​part. The snap-fit ​​part is snapped onto the side wall of the snap-fit ​​groove to form an inverted structure. During the snap-fit ​​process, the snap-fit ​​part and the large circle will push the snap-fit ​​part and the snap-fit ​​groove bottom to fit more tightly, and the snap-fit ​​part and the snap-fit ​​groove will fit more tightly. Moreover, the end of the connecting post away from the large circle deforms to form a small circle that presses against the stationary plate, thereby making the contact between the silver alloy contact and the stationary plate tighter, increasing the conductive area, and improving the service life of the relay.

[0007] Optionally, a support ring coaxial with the mounting hole is provided on the side wall of the stationary piece away from the snap-fit ​​groove. An inclined contact surface is provided on the outer side wall of the support ring. The diameter of the contact surface near the stationary piece is larger than the diameter of the end away from the stationary piece. A support surface, a contact surface, and a connecting surface that are respectively in close contact with the support ring, the contact surface, and the stationary piece are formed by riveting on the small circle.

[0008] By adopting the above technical solution, the opening of the snap-fit ​​groove will reduce the thickness of the stationary plate, especially the thickness of the mounting hole connected to the stationary plate, which will reduce the stability and life of the stationary plate. At the same time, the large circle can be tightly fitted with the snap-fit ​​groove under the pushing action of the snap-fit ​​groove, but the small circle is directly stamped and deformed to fit tightly against the stationary plate. The small circle is prone to gaps due to the reaction force of the stationary plate, resulting in poor stability when the small circle contacts the stationary plate, thus reducing the service life of the relay.

[0009] The support ring increases the thickness of the stationary plate at the mounting hole, ensuring it reaches the thickness before the slot is formed, thus improving its stability and lifespan. Simultaneously, the inclined contact surface causes the small circle to sequentially form a support surface, a contact surface, and a connecting surface during stamping. During this process, the formation of the contact surface generates a force that pushes the support surface closer to the support ring, and similarly, the formation of the connecting surface generates a force that pushes the support surface closer to the support ring and the contact surface closer to the contact surface. This further increases the conductive area and extends the relay's lifespan.

[0010] Secondly, the riveting process provided in this application adopts the following technical solution: A riveting process includes the above steps: Feeding: The large circular insert is installed on the riveting mechanism for positioning. The feeding mechanism positions the stationary piece and transports it to the riveting table. The clamping assembly clamps and positions the stationary piece. Riveting: The riveting mechanism starts to rivet the silver alloy contacts. During the riveting process, the riveting mechanism restricts and constrains the large circle, so that the large circle is concentrated in the snap-fit ​​groove and it is easy to form the snap-fit ​​part. Unload the material; release the clamping assembly and remove the stationary plate and silver alloy contact.

[0011] By adopting the above technical solution, the large circle is inserted and installed on the riveting mechanism for positioning. The feeding mechanism positions the stationary piece and then places it on the riveting table. After the clamping assembly clamps the stationary piece, the feeding mechanism disengages from the stationary piece. The riveting mechanism starts to stamp and rivet the large circle and the connecting column. At the same time, during the riveting process, the riveting mechanism can restrict and constrain the outer wall of the large circle, so that the deformation of the large circle is concentrated in the snap-fit ​​groove to form a snap-fit ​​part. The snap-fit ​​part is snapped and installed on the snap-fit ​​groove, and pushes the large circle to fit tightly against the bottom of the snap-fit ​​groove. The connecting column forms a small circle and presses against the stationary piece for positioning.

[0012] The riveting mechanism positions the large circle, while the feeding mechanism positions the stationary piece, thus positioning the mounting hole and the snap-fit ​​groove. This results in better accuracy and quality after riveting. At the same time, the riveting mechanism restricts and constrains the large circle, concentrating its deformation within the snap-fit ​​groove during riveting, while minimizing deformation in other areas. This facilitates the formation of the snap-fit ​​part, thereby reducing the force applied during riveting and lowering the risk of damage to the silver alloy contacts and stationary piece, further improving the quality of the relay.

[0013] Optionally, the feeding mechanism includes: The movable base is slidably mounted on the machine body; Drive components are used to drive the moving base to move; The positioning pin is set on the movable base and is inserted into the mounting hole for positioning. A spring clip is set on the positioning post and presses against the mounting hole for positioning; A positioning plate is mounted on a positioning post, which is inserted into a mounting hole and the positioning plate abuts against a stationary plate for positioning.

[0014] By adopting the above technical solution, the mounting hole on the stationary piece is fitted onto the positioning post and positioned against the positioning plate. The spring sheet is pressed against the mounting hole for positioning. The drive assembly starts to drive the moving seat and the stationary piece to approach the riveting table, so that the stationary piece is placed on the riveting table. The clamping assembly clamps and positions the stationary piece. The drive assembly starts to drive the positioning post and positioning plate to move upward. The spring sheet is squeezed and causes the positioning post to disengage from the mounting hole, thereby realizing the conveying of the rear stationary piece.

[0015] Optionally, the body is provided with a moving section and a clearance section that are connected to each other for the moving seat to slide. The moving section is located on the side of the clearance section near the riveting table. The moving section is arranged along the axis of the mounting hole. The clearance section and the moving section form a certain angle and the angle is not zero. After the stationary piece is installed on the positioning post and abuts against the positioning plate, the moving seat first moves on the clearance section and then moves on the moving section, placing the stationary piece on the riveting table. The clamping assembly clamps the stationary piece, and the moving seat moves back to the clearance section, causing the positioning post and positioning plate to move to the outside of the riveting mechanism.

[0016] By adopting the above technical solution, the moving direction of the riveting mechanism is generally parallel to the axis of the stationary plate mounting hole located on the riveting table. However, the movement of the moving seat will interfere with the movement of the riveting mechanism, which will pose a risk during the riveting process, reduce the riveting quality, and reduce the service life of the relay.

[0017] The movable seat moves first on the clearance section. Both the movable seat and the stationary piece are located outside the riveting mechanism, so they do not interfere with the riveting process. After the riveting mechanism returns to its original position, the movable seat moves from the outside of the riveting structure to between the riveting mechanism and the riveting table. Then, the movable seat and the stationary piece approach the riveting table, allowing the stationary piece to be placed on the riveting table. The clamping assembly clamps and positions the stationary piece. The movable seat drives the positioning pin away from the riveting table along the mounting hole axis, making it easier for the positioning pin to disengage from the stationary piece. Then, the movable seat drives the positioning pin and the positioning plate to move to the outside of the riveting mechanism, which greatly improves the stability of the riveting process, the riveting quality, and the service life of the relay.

[0018] Optionally, the driving component includes: Rotating blocks one and two are rotatably mounted on the machine body and the movable base; Telescopic components are mounted on rotating blocks one and two and extend and retract to drive the moving seat to move.

[0019] By adopting the above technical solution, the telescopic component drives the moving seat to move on the moving section or the avoidance section. At the same time, it is connected to the telescopic component through rotating block one and rotating block two, so that the telescopic component can adapt to the adjustment of the moving seat position. That is, the moving seat can be moved on the moving section and the avoidance section through the telescopic component.

[0020] Optionally, multiple clamping components are provided, and the clamping components include: The clamping block is rotatably mounted on the machine body; Clamping components are used to drive the clamping block to rotate and clamp and position the stationary piece.

[0021] By adopting the above technical solution, the clamping component starts to drive the clamping block to rotate, so that the clamping block presses against the stationary piece for clamping and positioning, or the clamping block rotates away from the stationary piece to unlock.

[0022] Optionally, the riveting mechanism includes: The sliding seat is slidably mounted on the machine body in a direction that is close to or away from the stationary plate located on the machine body; Rivet joint one is slidably mounted on the machine body along the axis of the mounting hole and is located on both sides of the stationary plate, respectively, as is the sliding seat. The positioning sleeve is set on the side of the sliding seat near the stationary piece by an elastic component. The large circular insertion is installed on the positioning sleeve for positioning. The sliding seat is close to the stationary piece and pushes the positioning sleeve to press against the stationary piece under the elastic force of the elastic component for positioning. Rivet joint 2 is set on the sliding seat and cooperates with rivet joint 1 to rivet the large circle and the end of the connecting column away from the large circle to form a snap-fit ​​part and a small circle; A push assembly is used to move the moving base and the rivet joint.

[0023] By adopting the above technical solution, the large circle is inserted and installed onto the positioning sleeve. The sliding seat drives the positioning sleeve to contact the stationary plate. The connecting post is inserted and installed into the mounting hole. The moving seat continues to move, and the elastic component is squeezed, causing the positioning sleeve to press against the stationary plate for positioning. At the same time, the rivet head one abuts against the connecting post to achieve stamping. The sliding seat continues to move, pushing the rivet head two to move relative to the positioning sleeve. The rivet head two exerts a force on the large circle. The force is applied from both sides at the same time, causing the large circle to be squeezed and expanded to form a rear snap-fit ​​part. The connecting post is squeezed to form a small circle that presses against the stationary plate. The snap-fit ​​part is snapped into the snap-fit ​​groove to form an inverted structure. This can achieve positioning of the silver alloy contact and constrain the large circle, thereby improving the service life of the relay.

[0024] Optionally, the pushing component includes: Pusher component one and pusher component two are used to drive the rivet joint one and the sliding seat to move, respectively.

[0025] By adopting the above technical solution, the first drive seat moves, and the second drive rivet joint moves.

[0026] Optionally, the resilient component includes: The guide rod is mounted on the positioning sleeve and slides along the sliding direction of the sliding seat. The elastic element is connected to the sliding seat and the positioning sleeve respectively, and makes the positioning sleeve tend to be close to the stationary piece.

[0027] By adopting the above technical solution, the positioning sleeve moves the guide rod on the sliding seat, and the elastic element drives the positioning sleeve to maintain a tendency to approach the stationary piece; when the positioning sleeve contacts the stationary piece, the sliding seat continues to approach the stationary piece, and the positioning sleeve presses against the stationary piece under the action of the elastic element, so that the positioning sleeve can restrict and constrain the large circle located outside the snap-fit ​​groove, and can better realize the deformation of the large circle concentrated in the snap-fit ​​groove, thereby improving the service life of the relay.

[0028] In summary, this application includes at least one of the following beneficial technical effects: 1. After riveting the large circle, a snap-fit ​​part is formed. The snap-fit ​​part is snapped onto the side wall of the snap-fit ​​groove to form an inverted structure. During the snap-fit ​​process, the snap-fit ​​part and the large circle will push the snap-fit ​​part and the bottom of the snap-fit ​​groove to fit more tightly, which also makes the snap-fit ​​part fit more tightly with the snap-fit ​​groove. In addition, the connecting post forms a small circle that presses against the stationary plate, thereby making the contact between the silver alloy contact and the stationary plate tighter, increasing the conductive area and improving the service life of the relay.

[0029] 2. The support ring increases the thickness of the stationary plate at the mounting hole, ensuring it reaches the thickness before the slot is formed, thus improving its stability and lifespan. Simultaneously, during the stamping process, the small circle sequentially forms the support surface, the contact surface, and the connecting surface. During this process, the formation of the contact surface generates a force that pushes the support surface closer to the support ring. Similarly, the formation of the connecting surface generates a force that pushes the support surface closer to the support ring and the contact surface closer to the mating surface, further increasing the conductive area and extending the relay's lifespan.

[0030] 3. The riveting mechanism positions the large circle, and the feeding mechanism positions the stationary piece, i.e., the mounting hole and the snap-fit ​​groove are positioned. This results in better accuracy and quality after riveting. At the same time, the riveting mechanism restricts and constrains the large circle, so that the deformation of the large circle during riveting is concentrated in the snap-fit ​​groove, while the deformation of the large circle in other positions is smaller. This makes it easier to form the snap-fit ​​part, which can reduce the force during the riveting process, reduce the risk of damage to the silver alloy contacts and the stationary piece, and further improve the quality of the relay. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of the relay contact structure; Figure 2 yes Figure 1 A cross-sectional schematic diagram of AA in the middle; Figure 3 yes Figure 2 Enlarged diagram of section B; Figure 4 This is a three-dimensional structural diagram of the equipment used in the riveting process; Figure 5 This is a partial structural diagram of the equipment used in the riveting process; Figure 6 yes Figure 5 A cross-sectional view of CC. Figure 7 yes Figure 6 Enlarged schematic diagram of section D in the middle.

[0032] Reference numerals: 1. Stationary plate; 11. Mounting hole; 12. Snap-fit ​​groove; 13. Snap-fit ​​part; 14. Support ring; 15. Contact surface; 16. Threaded hole; 2. Silver alloy contact; 21. Connecting post; 22. Large circle; 23. Small circle; 24. Support surface; 25. Tight-fitting surface; 26. Connecting surface; 3. Body; 31. Support platform; 32. Moving section; 33. Clearance section; 34. Slide rail; 35. Riveting platform; 36. Riveting hole one; 37. Riveting hole two; 38. Support platform; 4. Upper Material feeding mechanism; 41. Moving seat; 42. Positioning column; 43. Spring; 44. Positioning plate; 45. Receiving groove; 46. Limiting rod; 47. Limiting plate; 5. Drive assembly; 51. Rotating block one; 52. Rotating block two; 53. Telescopic component; 6. Clamping assembly; 61. Clamping block; 7. Riveting mechanism; 71. Sliding seat; 72. Riveting joint one; 73. Positioning sleeve; 74. Riveting joint two; 75. Positioning groove; 76. Guide hole; 8. Elastic component; 81. Guide rod; 82. Elastic component. Detailed Implementation

[0033] The following provides a further detailed description of this application.

[0034] This application discloses a relay contact structure and riveting process.

[0035] Reference Figures 1-3 The relay contact structure includes a stationary plate 1 and a silver alloy contact 2. The stationary plate 1 has a mounting hole 11 for the silver alloy contact 2 to pass through. A snap-fit ​​groove 12, coaxially connected to the surface of the stationary plate 1, is formed on the mounting hole 11. The diameter of the snap-fit ​​groove 12 near the mounting hole 11 is larger than the diameter of the end away from the mounting hole 11. The silver alloy contact 2 includes a coaxially connected connecting post 21, a large circle 22, and a small circle 23. The connecting post 21 is inserted into the mounting hole 11. The large circle 22 has a snap-fit ​​portion 13 that abuts against the bottom of the snap-fit ​​groove 12. The snap-fit ​​portion 13 is formed by riveting and is snap-fitted onto the side wall of the snap-fit ​​groove 12, forming an inverted snap. Under the action of the snap-fit ​​groove 12, both the large circle 22 and the snap-fit ​​portion 13 are pushed against the bottom of the snap-fit ​​groove 12 for positioning. The small circle 23 is formed by riveting, and the small circle 23 and the snap-fit ​​portion 13 cooperate to achieve tight contact between the silver alloy contact 2 and the stationary plate 1.

[0036] A support ring 14 is integrally provided on the side wall of the stationary piece 1 away from the snap-fit ​​groove 12. The outer diameter of the support ring 14 is smaller than the minimum diameter of the snap-fit ​​groove 12. An inclined mating surface 15 is coaxially formed on the outer side wall of the support ring 14. The diameter of the mating surface 15 near the stationary piece 1 is larger than the diameter of the end away from the stationary piece 1. A support surface 24, a close-fitting surface 25, and a connecting surface 26 are formed on the small circle 23 by riveting. The support surface 24 is close to the end of the support ring 14 away from the stationary piece 1, and the close-fitting surface 25 is close to the mating surface 15. The connecting surface 26 is close to the side wall of the stationary piece 1 away from the snap-fit ​​groove 12 for positioning. A threaded hole 16 is provided on the end of the stationary piece 1 away from the mounting hole 11. The axis of the threaded hole 16 is parallel to that of the mounting hole 11.

[0037] During riveting, the connecting post 21 is pushed through the mounting hole 11 coaxially to rivet the large circle 22 and the connecting post 21. This causes the large circle 22 to deform and expand, forming a snap-fit ​​part 13 that is installed on the snap-fit ​​groove 12. The snap-fit ​​part 13 and the snap-fit ​​groove 12 work together to push the snap-fit ​​part 13 and the large circle 22 against the bottom of the snap-fit ​​groove 12 for positioning, which also makes the snap-fit ​​part 13 fit more tightly against the side wall of the snap-fit ​​groove 12.

[0038] After the connecting post 21 is compressed, a supporting surface 24 is first formed to adhere tightly to the supporting ring 14, and then a close-fitting surface 25 is formed to adhere tightly to the mating surface 15. During the formation process, a force continues to be generated to push the supporting surface 24 closer to the supporting ring 14. Then, a connecting surface 26 is formed to adhere to the stationary plate 1. At the same time, a force continues to be generated during the formation process to push the supporting surface 24 closer to the supporting ring 14 and the close-fitting surface 25 closer to the mating surface 15. This can greatly increase the contact area between the small circle 23 and the stationary plate 1, increase the conductive area, and improve the service life of the relay.

[0039] The working principle of this application embodiment is as follows: During riveting, the connecting post 21 is pushed through the mounting hole 11 to rivet the large circle 22 and the connecting post 21. After the large circle 22 is deformed, it forms a snap-fit ​​part 13. The snap-fit ​​part 13 and the snap-fit ​​groove 12 cooperate to push the snap-fit ​​part 13 and the large circle 22 against the bottom of the snap-fit ​​groove 12 for positioning. After the connecting post 21 is squeezed, it forms a support surface 24 that is tightly attached to the support ring 14, a tight-fitting surface 25 that is tightly attached to the mating surface 15, and a connecting surface 26 that is attached to the stationary plate 1. This greatly increases the contact area between the large circle 22 and the small circle 23 and the stationary plate 1, increases the conductive area, and improves the service life of the relay.

[0040] This application discloses a riveting process.

[0041] Reference Figures 4-7 The riveting process includes the above steps: Feeding: The large circle 22 is inserted and installed onto the riveting mechanism 7 for positioning. The feeding mechanism 4 positions the stationary piece 1 and transports the stationary piece 1 to the riveting table 35. The clamping assembly 6 clamps and positions both ends of the stationary piece 1. Reference Figures 3-6 Riveting: The riveting mechanism 7 starts to rivet the large circle 22 and the connecting column 21. During the riveting process, the riveting mechanism 7 restricts and constrains the large circle 22, so that the deformation of the large circle 22 is concentrated in the snap-fit ​​groove 12 and it is easy to form the snap-fit ​​part 13. Unload the material; release the clamping assembly 6 and remove the stationary plate 1 and the silver alloy contact 2.

[0042] Reference Figures 4-7 The riveting table 35 is fixedly installed on the machine body 3. The riveting table 35 is provided with riveting hole 1 36 and riveting hole 2 37 spaced apart. The diameter of riveting hole 1 36 is larger than the maximum diameter of the snap groove 12, and the diameter of riveting hole 2 37 is larger than the outer diameter of the threaded hole 16. When the stationary piece 1 is placed on the riveting table 35, the stationary piece 1 and the riveting table 35 are parallel in length direction. The axis of the mounting hole 11 and the axis of the riveting hole 1 36 are coincident, and the axis of the threaded hole 16 and the axis of the riveting hole 2 37 are coincident.

[0043] Two clamping components 6 are provided and are corresponding to both ends of the stationary piece 1. The clamping component 6 includes clamping blocks 61 and clamping members. The clamping blocks 61 are rotatably mounted on the riveting table 35. The clamping members are electric push rods or motors. The clamping members are used to drive the clamping blocks 61 to rotate, so that the two clamping blocks 61 press against both ends of the stationary piece 1 for positioning, or the clamping blocks 61 rotate away from the stationary piece 1, thereby unlocking the stationary piece 1.

[0044] The feeding mechanism 4 includes a movable base 41, a drive assembly 5, a positioning column 42, a spring 43, and a positioning plate 44. A support platform 31 extending above the riveting table 35 is fixedly installed on the machine body 3. The support platform 31 has a movable section 32 and a clearance section 33 connected to each other. The movable section 32 is located on the side of the clearance section 33 closer to the riveting table 35, that is, the top of the movable section 32 is connected to the bottom of the clearance section 33. A vertical slide rail 34 is provided on the support platform 31 and on one side of the movable section 32. The top of the clearance section 33 is inclined upward and away from the slide rail 34. The movable section 32 is vertically downward. The clearance section 33 and the movable section 32 form a certain angle and the angle is not zero.

[0045] The movable seat 41 is slidably mounted on the moving section 32 or the avoidance section 33. The drive assembly 5 is used to drive the movable seat 41 to slide on the moving section 32 or the avoidance section 33. The drive assembly 5 includes a first rotating block 51 and a second rotating block 52, and a telescopic member 53. The first rotating block 51 and the second rotating block 52 are respectively rotatably mounted on the support platform 31 and the movable seat 41 and rotate in parallel directions. The telescopic member 53 is an electric push rod or a cylinder. The telescopic member 53 is fixedly mounted on the first rotating block 51 and its piston rod is connected to the second rotating block 52. The extension and retraction of the piston rod of the telescopic member 53 can drive the movable seat 41 to move on the moving section 32 or the avoidance section 33.

[0046] The positioning post 42 is fixedly installed on the lower surface of the movable seat 41 and is in a vertical position. The positioning post 42 has a vertical receiving groove 45 around its own axis. Multiple spring pieces 43 are provided and fixedly installed on multiple receiving grooves 45 respectively. The spring pieces 43 are elastic and their bottom ends extend to the outside of the receiving grooves 45. The positioning plate 44 is coaxially fixedly installed on the positioning post 42. A limit rod 46 is also fixedly installed on the lower surface of the movable seat 41. The limit rod 46 is set vertically downward and a limit plate 47 is set coaxially. Guide angles are provided on the bottom ends of the positioning post 42 and the limit rod 46.

[0047] The riveting mechanism 7 is mounted on the support platform 31 and the body 3 located below the riveting platform 35. The riveting mechanism 7 on the support platform 31 is vertically slidably mounted on the slide rail 34, and the riveting mechanism 7 on the body 3 located below the riveting platform 35 is vertically mounted on the body 3.

[0048] In the initial state, the movable seat 41 is located on the avoidance section 33 and outside the riveting mechanism 7. The stationary piece 1 is brought close to the positioning post 42 and the limiting rod 46, so that the positioning post 42 is inserted into the mounting hole 11 and the limiting rod 46 is inserted into the threaded hole 16, so that the positioning plate 44 and the limiting plate 47 abut against the upper surface of the stationary piece 1 for positioning, and at the same time, multiple spring pieces 43 abut against the mounting hole 11 for positioning.

[0049] The movable seat 41 tilts downward and then moves vertically downward to place the stationary piece 1 on the riveting table 35. The two clamping components 6 clamp the stationary piece 1 at both ends for positioning. The movable seat 41 moves vertically upward, causing the positioning pin 42 and the limiting rod 46 to move upward and disengage from the mounting hole 11 and the threaded hole 16, respectively. Then the movable seat 41 tilts upward, causing the positioning pin 42, the positioning plate 44, the limiting rod 46, and the limiting plate 47 to all move back to the outside of the riveting mechanism 7.

[0050] The riveting mechanism 7 includes a sliding seat 71, a first riveting head 72, a positioning sleeve 73, a second riveting head 74, and a pushing assembly; the sliding seat 71 is vertically slidably mounted on the machine body 3 and located below the riveting table 35; the first riveting head 72 is vertically slidably mounted on the slide rail 34, and the axes of the first riveting head 72 and the first riveting hole 36 are coincident; the positioning sleeve 73 is set on the upper surface of the sliding seat 71 through the elastic component 8; the top of the positioning sleeve 73 is provided with a positioning groove 75; the bottom of the positioning sleeve 73 is provided with a guide hole 76 communicating with the positioning groove 75.

[0051] Multiple elastic components 8 are horizontally spaced. Each elastic component 8 includes a guide rod 81 and an elastic element 82. The guide rod 81 is fixedly installed on the bottom end of the positioning sleeve 73 and slides vertically on the sliding seat 71. The elastic element 82 is a spring. The elastic element 82 is sleeved on the guide rod 81 and its two ends press against the upper surfaces of the positioning sleeve 73 and the sliding seat 71. The elastic element 82 is in a compressed state. At the same time, the outer diameter of the positioning sleeve 73 is smaller than the diameter of the riveting hole 36, and the axes of the positioning sleeve 73 and the riveting hole 36 coincide. A support platform 38 is fixedly installed on the body 3. In the initial state, the support platform 38 supports the lower surface of the positioning sleeve 73 for positioning, so that when the large circle 22 is inserted into the positioning groove 75, the support platform 38 positions the positioning sleeve 73.

[0052] Reference Figures 3-7 The second rivet joint 74 is fixedly installed on the upper surface of the sliding seat 71, and the second rivet joint 74 is vertically slidably installed on the guide hole 76. In the initial state, the top of the second rivet joint 74 is flush with the bottom of the positioning groove 75. The pushing assembly is used to drive the first rivet joint 72 and the sliding seat 71 to move. The pushing assembly includes a first pusher and a second pusher. The first pusher and the second pusher have the same structure. The first pusher is fixedly installed on the support platform 31 and is used to drive the first rivet joint 72 to move vertically, so that the first rivet joint 72 rivets and presses against the connecting column 21. The second pusher is fixedly installed on the machine body 3 and is used to drive the sliding seat 71 to move, so that the second rivet joint 74 punches the large circle 22, so that the large circle 22 deforms and expands to obtain the snap-fit ​​part 13. The first pusher and the second pusher are the driving structures in the prior art, which will not be described in detail here.

[0053] The large circle 22 is inserted and installed into the positioning groove 75 for positioning. The positioning pin 42 and the limiting rod 46 are respectively inserted and installed into the mounting hole 11 and the threaded hole 16. The positioning plate 44 and the limiting plate 47 abut against the upper surface of the stationary piece 1 for positioning. At the same time, multiple elastic elements 82 press against the mounting hole 11 for positioning. The moving seat 41 drives the stationary piece 1 to move down and place it on the riveting table 35. The two clamping components 6 clamp the stationary piece 1 for positioning. The moving seat 41 drives the positioning pin 42 and the limiting rod 46 to move back to their original positions.

[0054] The sliding seat 71 moves upward and the riveting head 72 moves downward. The upward movement of the sliding seat 71 pushes the positioning sleeve 73 through the riveting hole 36 and abuts against the stationary plate 1 for positioning. The sliding seat 71 continues to move upward, pushing the riveting head 74 to push the large circle 22 upward and disengage it from the positioning groove 75, so that the large circle 22 abuts against the bottom of the snap-fit ​​groove 12. At the same time, the riveting head 72 punches the end of the connecting post 21 away from the large circle 22, so that the large circle 22 is punched and deformed to form the snap-fit ​​part 13. Under the action of the snap-fit ​​groove 12, the snap-fit ​​part 13 pushes the snap-fit ​​part 13 and the large circle 22 to stick tightly to the bottom of the snap-fit ​​groove 12. At the same time, the side wall of the snap-fit ​​part 13 is tightly attached to the side wall of the snap-fit ​​groove 12, and the small circle 23 is tightly attached to the stationary plate 1, thereby increasing the conductive area and improving the service life of the relay.

[0055] The working principle of this application embodiment is as follows: The large circle 22 is inserted and installed into the positioning slot 75 for positioning. The moving seat 41 places the stationary piece 1 onto the riveting table 35. The two clamping components 6 clamp the stationary piece 1 for positioning. The moving seat 41 moves back to its original position.

[0056] The sliding seat 71 moves upward and the rivet head 72 moves downward, causing the large circle 22 to be stamped and deformed to form a snap-fit ​​part 13. Under the action of the snap-fit ​​groove 12, the snap-fit ​​part 13 and the large circle 22 are pushed to stick tightly to the bottom of the snap-fit ​​groove 12. At the same time, the side wall of the snap-fit ​​part 13 is pressed tightly to the side wall of the snap-fit ​​groove 12, and the connecting post 21 is stamped and deformed to form a small circle 23 that is pressed tightly to the stationary plate 1. This increases the conductive area and improves the service life of the relay.

[0057] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A relay contact structure, characterized in that: The device includes a stationary plate (1) and a silver alloy contact (2). The stationary plate (1) has a mounting hole (11) and a snap-fit ​​groove (12) is coaxially formed on the mounting hole (11). The diameter of the snap-fit ​​groove (12) near the mounting hole (11) is larger than the diameter of the end away from the mounting hole (11). The silver alloy contact (2) includes a connecting post (21), a large circle (22) and a small circle (23). The connecting post (21) is coaxially inserted into the mounting hole (11). The large circle (22) is formed by riveting and pressing to form a snap-fit ​​part (13) that snaps into the snap-fit ​​groove (12). The snap-fit ​​part (13) and the large circle (22) are pressed against the snap-fit ​​groove (12) for positioning under the pushing action of the snap-fit ​​groove (12). The small circle (23) is formed by riveting and is tightly attached to the stationary plate (1) for positioning.

2. The relay contact structure according to claim 1, characterized in that: On the side wall of the stationary piece (1) away from the snap-fit ​​groove (12), there is a support ring (14) coaxial with the mounting hole (11). An inclined contact surface (15) is provided on the outer side wall of the support ring (14). The diameter of the contact surface (15) near the stationary piece (1) is larger than the diameter of the end away from the stationary piece (1). The small circle (23) is formed by riveting with a support surface (24), a contact surface (25), and a connecting surface (26) that are respectively in close contact with the support ring (14), the contact surface (15), and the stationary piece (1).

3. A riveting process applied to the contact structure according to any one of claims 1-2, characterized in that: Including the above steps: Feeding: The large circle (22) is inserted and installed on the riveting mechanism (7) for positioning. The feeding mechanism (4) positions the stationary piece (1) and transports the stationary piece (1) to the riveting table (35). The clamping assembly (6) clamps and positions the stationary piece (1). Riveting: The riveting mechanism (7) starts to rivet the silver alloy contact (2). During the riveting process, the riveting mechanism (7) restricts and constrains the large circle (22), so that the deformation of the large circle (22) is concentrated in the snap-fit ​​groove (12) and it is easy to form the snap-fit ​​part (13). Unload; release the clamping assembly (6) and remove the stationary plate (1) and silver alloy contact (2).

4. The riveting process according to claim 3, characterized in that: The feeding mechanism (4) includes: The movable seat (41) is slidably mounted on the body (3); Drive component (5) is used to drive the moving base (41) to move; The positioning post (42) is set on the movable base (41) and is inserted into the mounting hole (11) for positioning; The spring piece (43) is set on the positioning post (42) and presses against the mounting hole (11) for positioning; The positioning plate (44) is set on the positioning post (42), which is inserted into the mounting hole (11) and the positioning plate (44) abuts against the stationary plate (1) for positioning.

5. The riveting process according to claim 4, characterized in that: The body (3) is provided with a moving section (32) and a clearance section (33) for the moving seat (41) to slide and are connected to each other. The moving section (32) is located on the side of the clearance section (33) close to the riveting table (35). The moving section (32) is arranged along the axis of the mounting hole (11). The clearance section (33) and the moving section (32) form a certain angle and the angle is not zero. After the stationary piece (1) is installed on the positioning post (42) and abuts against the positioning plate (44), the moving seat (41) moves first on the clearance section (33) and then on the moving section (32) and places the stationary piece (1) on the riveting table (35). The clamping assembly (6) clamps the stationary piece (1). The moving seat (41) moves back to the clearance section (33) and moves the positioning post (42) and the positioning plate (44) to the outside of the riveting mechanism (7).

6. The riveting process according to claim 5, characterized in that: The driving component (5) includes: Rotating block one (51) and rotating block two (52) are rotatably mounted on the machine body (3) and the movable seat (41); Telescopic component (53) is provided on rotating block one (51) and rotating block two (52) and is telescopic to drive the moving seat (41) to move.

7. The riveting process according to claim 3, characterized in that: Multiple clamping components (6) are provided, and each clamping component (6) includes: The clamping block (61) is rotatably mounted on the machine body (3); The clamping component is used to drive the clamping block (61) to rotate and clamp and position the stationary piece (1).

8. The riveting process according to claim 3, characterized in that: The riveting mechanism (7) includes: The sliding seat (71) is slidably disposed on the body (3) in a direction close to or away from the stationary plate (1) located on the body (3); The rivet joint (72) is slidably mounted on the body (3) along the axis of the mounting hole (11) and is located on both sides of the stationary plate (1) along with the sliding seat (71); The positioning sleeve (73) is set on the side of the sliding seat (71) near the stationary piece (1) by the elastic component (8). The large circle (22) is inserted and installed on the positioning sleeve (73) for positioning. The sliding seat (71) is close to the stationary piece (1) and pushes the positioning sleeve (73) against the stationary piece (1) under the elastic force of the elastic component (8) for positioning. Rivet joint 2 (74) is set on sliding seat (71) and cooperates with rivet joint 1 (72) to rivet the large circle (22) and the connecting column (21) away from the large circle (22) to form a snap-fit ​​part (13) and a small circle (23). A push assembly is used to move the movable seat (41) and the rivet head (72).

9. A riveting process according to claim 8, characterized in that: The actuating component includes: Pusher 1 and pusher 2 are used to drive the rivet joint 1 (72) and the sliding seat (71) to move, respectively.

10. A riveting process according to claim 8, characterized in that: The elastic component (8) includes: The guide rod (81) is mounted on the positioning sleeve (73) and is slidably mounted on the sliding seat (71) along the sliding direction of the sliding seat (71); The elastic element (82) is connected to the sliding seat (71) and the positioning sleeve (73) respectively, and the positioning sleeve (73) tends to be close to the stationary piece (1).

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