Relay with silver contact

Abstract

The utility model discloses a relay with a silver contact, and relates to the technical field of relays, the relay comprises a relay inner frame, the top of the inner wall of the relay inner frame is fixedly connected with a coil group, and the side wall of an insulating frame is provided with a replacement mechanism. According to the relay with the silver contact, the driving rod can be driven by the positioning block to slide in the arc-shaped sliding groove, so that the rotating disc is driven to rotate, the rotating disc drives the positions of the upper moving plate and the lower moving plate to be exchanged, and replacement of the static contact is completed; therefore, when the relay is used, if a fault occurs, the static contact can be temporarily replaced, the two contacts can be flexibly replaced, the relay can rapidly continue to work without shutdown repair, the shutdown time and the maintenance cost are greatly reduced, the two contacts are alternately used, loads and abrasion can be dispersed, and the service life of the relay is prolonged. The overall service life of the relay is prolonged.

Description

Technical Field

[0001] This application relates to the field of relay technology, and in particular to a relay with silver contacts. Background Technology

[0002] A relay is an electronic control device that enables automatic control and protection in electrical systems. A relay typically consists of an iron core, coil, armature, contact springs, and other components.

[0003] As shown in Chinese Patent Publication No. CN216624121U, a relay with dual contacts includes a body with multiple electrical connecting pieces, each of which has a first electrical connection portion; a moving contact with multiple second electrical connection portions, which are in contact with or separate from the first electrical connection portions; and a drive assembly including an armature, which forms a rotating pair with the body and is connected to the moving contact. Rotating the armature causes the first electrical connection portions to contact or separate from the second electrical connection portions. However, in practical use, the following shortcomings still exist:

[0004] In actual use, although the relay with silver contacts in the above-mentioned patent has two contacts, the two contacts cannot be flexibly switched. When the moving contact is connected to the first contact, if the first contact fails and cannot be used, the operator needs to stop the machine to replace the contact. The process is extremely cumbersome and causes the machine to stop, thus prolonging the working time. Utility Model Content

[0005] To improve the problem of insufficient contact switching flexibility, this application provides a relay with silver contacts.

[0006] The relay with silver contacts provided in this application adopts the following technical solution:

[0007] A relay with silver contacts includes an inner frame of the relay, a connecting block fixedly connected to the side wall of the inner frame of the relay, an insulating frame fixedly connected to the side wall of the inner frame of the relay, a coil group fixedly connected to the top of the inner wall of the inner frame of the relay, and a replacement mechanism provided on the side wall of the insulating frame.

[0008] The replacement mechanism is used to temporarily replace the stationary contact when a fault occurs during the use of the relay;

[0009] The replacement mechanism includes a rotating disk disposed on the side wall of the insulating frame, a movable plate movably disposed on the side wall of the rotating disk, a stationary contact fixedly disposed on the top of the movable plate, an arc-shaped sliding groove disposed on the side wall of the insulating frame, a drive rod slidably disposed inside the arc-shaped sliding groove, a positioning block fixedly disposed at one end of the drive rod, and a positioning plate fixedly disposed on the top of the movable plate.

[0010] By adopting the above technical solution, the stationary contact is cut with the horizontal dividing line of the rotating disk as the axis, so that after the rotation is completed, the replaced stationary contact is in the same position as the original stationary contact, and the moving contact is in the same vertical position as the stationary contact, thus maintaining good contact.

[0011] Preferably, the replacement mechanism further includes a connecting cylinder fixedly penetrating the side wall of the insulating frame. A lead wire is inserted into the side wall of the connecting cylinder. A connecting piece fixedly penetrating the connecting cylinder is fixedly connected to the side wall of the lead wire. A connecting ring that engages with the outer wall of the connecting cylinder is fixedly connected to the end of the connecting piece away from the lead wire. A first limiting ring is fixedly penetrating the outer wall of the connecting cylinder. A sliding ring is movably penetrating the outer wall of the connecting cylinder. A connecting strip is fixedly penetrating inside the sliding ring. A connecting square tube fixedly connected to the outer wall of the sliding ring is fixedly penetrating the outer wall of the connecting strip. A second limiting ring is fixedly penetrating the outer wall of the connecting cylinder.

[0012] By adopting the above technical solution, the sliding ring and the second limiting ring are kept in the same size, which makes the rotation of the sliding ring more stable and ensures that the connecting strip and the connecting ring can always maintain good contact.

[0013] Preferably, the outer wall of the connecting cylinder and the rotating disk are movably connected, a limiting disk is fixedly connected to the end of the connecting cylinder away from the lead wire, and the side wall of the rotating disk and the side wall of the moving plate are movably connected.

[0014] By adopting the above technical solution, the side of the limiting disc near the connecting cylinder is in contact with the outer wall of the rotating disc, thereby limiting the rotating disc through the second limiting ring and the limiting disc.

[0015] Preferably, a lead wire is movably connected through the inside of the movable plate, the lead wire is fixedly connected to the connecting strip, the top of the movable plate is fixedly connected to the bottom of the stationary contact, and the bottom of the movable plate is fixedly connected to the connecting square tube.

[0016] By adopting the above technical solution, the static contact and the drive rod can form a complete current path through the lead wire, and the lead wire is protected by the moving plate.

[0017] Preferably, the arc-shaped groove is formed through the side wall of the insulating frame, and a square block is fixedly connected to the side wall of the rotating disk. The side of the square block closest to the insulating frame is fixedly connected to the drive rod.

[0018] By adopting the above technical solution, the cross-sectional area of ​​the drive rod is smaller than that of the side wall of the square block, thus making the connection more stable.

[0019] Preferably, the side wall of the drive rod movably passes through the arc-shaped sliding groove, and the end of the drive rod away from the square block is fixedly connected to the positioning block.

[0020] By adopting the above technical solution, the cross-sectional dimensions of the drive rod and the width of the arc-shaped slide are matched, thereby making the sliding of the arc-shaped slide and the drive rod smoother and avoiding loosening.

[0021] Preferably, a handle is fixedly connected to the side of the positioning block away from the drive rod, a rotating shaft is fixedly connected to the side wall of the insulating frame, and a snap-fit ​​block that engages with the positioning block is movably passed through the side wall of the rotating shaft.

[0022] By adopting the above technical solution, the snap-fit ​​blocks are symmetrically arranged on both sides of the arc-shaped slide groove, thereby limiting and fixing the positioning block.

[0023] Preferably, the bottom of the positioning plate is fixedly connected to the top of the moving plate, and the side wall of the positioning plate is fixedly connected to the rotating disk.

[0024] By adopting the above technical solution, the moving plate is fixed by the positioning plate, thereby avoiding the failure caused by the moving plate sliding on its own during the structural movement.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The positioning block drives the drive rod to slide inside the arc-shaped groove, thereby driving the rotating disk to rotate. This causes the rotating disk to interchange the positions of the upper and lower moving plates, completing the replacement of the stationary contact. This allows for temporary replacement of the stationary contact if a fault occurs during relay use, enabling flexible switching between the two contacts. When in use, there is no need to stop for repairs, and operation can be resumed quickly, greatly reducing downtime and maintenance costs. Furthermore, alternating the use of the two contacts can also distribute the load and wear, extending the overall service life of the relay.

[0027] 2. By removing the positioning plate and then moving the moving plate horizontally out of the rotating disk, the stationary contacts located on the side wall of the moving plate can be replaced or cleaned. This eliminates the need for replacement or cleaning inside the relay, thus preventing liquids or dust from corroding other internal parts of the relay. Attached Figure Description

[0028] Figure 1 This is a schematic diagram showing the overall structure of the relay with silver contacts in this application;

[0029] Figure 2This is an overall view of the relay with silver contacts in this application from another perspective;

[0030] Figure 3 This is a partial view of the relay coil assembly with silver contacts in this application;

[0031] Figure 4 This is a partial view of the rotating disk of the relay with silver contacts in this application;

[0032] Figure 5 This is a partial view of the relay lead with silver contacts in this application;

[0033] Figure 6 The relay with silver contacts in this application Figure 5 A partial view of point A in the middle;

[0034] Figure 7 This is a partial view of the relay slide with silver contacts in this application;

[0035] Figure 8 This is a partial view of the square block of the relay with silver contacts in this application.

[0036] Figure 9 This is a schematic diagram of the component at the sliding ring of the relay with silver contacts in this application.

[0037] Figure label:

[0038] 1. Relay inner frame; 11. Connecting block; 12. Spring; 13. Armature; 14. Moving contact plate; 15. Moving contact; 16. Insulating frame; 17. Coil assembly;

[0039] 2. Replacement mechanism; 21. Connecting cylinder; 22. Lead wire; 23. Connecting piece; 24. Connecting ring; 25. First limiting ring; 26. Sliding ring; 27. Connecting strip; 28. Connecting square cylinder; 29. ​​Second limiting ring; 210. Rotating disk; 211. Limiting disk; 212. Moving plate; 213. Lead wire; 214. Stationary contact;

[0040] 215. Arc-shaped slide; 216. Square block; 217. Drive rod; 218. Positioning block; 219. Handle; 220. Rotating shaft; 221. Snap-fit ​​block; 222. Positioning plate. Detailed Implementation

[0041] The following is in conjunction with the appendix Figures 1-9 This application will be described in further detail.

[0042] This application discloses a relay with silver contacts.

[0043] Reference Figure 1A relay with silver contacts includes an inner frame 1, a connecting block 11 fixedly connected to the side wall of the inner frame 1, a spring 12 fixedly connected to the top of the connecting block 11, an armature 13 fixedly connected to the end of the spring 12 away from the connecting block 11, a rotating shaft provided on the side wall of the inner frame 1, the armature 13 fixedly connected to the rotating shaft, thereby making the armature 13 rotatably connected to the side wall of the inner frame 1, a moving contact plate 14 fixedly connected to the top of the armature 13, a moving contact 15 fixedly connected to the top and bottom of the side of the moving contact plate 14 away from the armature 13, an insulating frame 16 fixedly connected to the side wall of the inner frame 1, and a coil group 17 fixedly connected to the top of the inner wall of the inner frame 1. By energizing the coil group 17, the coil group 17 becomes magnetic, thereby attracting the armature 13. A replacement mechanism 2 is provided on the side wall of the insulating frame 16.

[0044] The staff installs the inner frame 1 of the relay inside the relay and connects the coil group 17 to the wire, so that the staff can start the relay.

[0045] Reference Figure 2 , Figure 3 The replacement mechanism 2 is used to temporarily replace the stationary contact 214 when a fault occurs during the use of the relay. The replacement mechanism 2 includes a rotating disk 210 disposed on the side wall of the insulating frame 16, a movable plate 212 movably disposed on the side wall of the rotating disk 210, and the stationary contact 214 fixedly disposed on the top of the movable plate 212. The stationary contact 214 is made of silver, which has good conductivity, thus making the current more stable. An arc-shaped groove 215 is disposed on the side wall of the insulating frame 16, a drive rod 217 is slidably disposed inside the arc-shaped groove 215, and a positioning block 218 is fixedly disposed on the drive rod 217. At one end of rod 217, positioning plate 222 is fixedly installed on top of moving plate 212. The replacement mechanism 2 also includes a connecting cylinder 21 fixedly penetrating the side wall of insulating frame 16. A circular hole is opened in the side wall of connecting cylinder 21 without penetrating it. The lead wire 22 is inserted into the circular hole, so that the lead wire 22 and connecting cylinder 21 are connected. Connecting piece 23 is fixedly connected to the side wall of lead wire 22. A circular hole is opened vertically through the side wall of connecting cylinder 21. Connecting piece 23 is fixedly penetrating the circular hole, so that connecting piece 23 and connecting cylinder 21 are fixedly connected.

[0046] When a contact malfunctions during use, the operator first disconnects the latching block 221 from the positioning block 218, and then grasps the handle 219, causing the handle 219 to move the positioning block 218.

[0047] Reference Figure 4 , Figure 5The end of the connecting piece 23 furthest from the pin 22 is fixedly connected to the inner wall of the connecting ring 24. An arc-shaped groove is formed on the outer wall of the connecting cylinder 21, and the connecting ring 24 is engaged within this groove, thus securing the connecting ring 24 to the connecting cylinder 21. The outer diameter of the connecting ring 24 is consistent with the diameter of the connecting cylinder 21, ensuring a smooth outer wall without protrusions. The first limiting ring 25 is fixedly inserted through the outer wall of the connecting cylinder 21, and its inner diameter is consistent with the radius of the connecting cylinder 21, resulting in a tighter connection. The sliding ring 26 movably passes through the outer wall of the connecting cylinder 21, and its inner diameter is consistent with the diameter of the connecting cylinder 21. This prevents the sliding ring 26 from becoming loose during rotation. The side of the sliding ring 26 closest to the first limiting ring 25 is in contact with the side wall of the first limiting ring 25. The sliding ring 26 has a vertically opened circular hole three. The connecting strip 27 is fixedly inserted through the circular hole three. The bottom of the connecting strip 27 is in contact with the connecting ring 24. The bottom of the connecting strip 27 is set to be arc-shaped, so as to fit more closely to the outer wall of the connecting ring 24. The bottom of the connecting square tube 28 is fixedly connected to the top of the sliding ring 26. The connecting square tube 28 has a vertically opened circular hole four. The size of the circular hole four is the same as that of the circular hole three. The connecting strip 27 is fixedly inserted through the circular hole four, so that the connecting strip 27 is vertically inserted through the connecting square tube 28.

[0048] The positioning block 218 drives the drive rod 217 to slide within the arc-shaped slide groove 215. The drive rod 217 drives the square block 216 to move synchronously. The square block 216 drives the rotating disk 210 to rotate. The rotating disk 210 drives the moving plate 212 to rotate. The moving plate 212 drives the stationary contact 214 and the connecting square tube 28 to rotate synchronously.

[0049] Reference Figure 6 , Figure 7The top of the connecting tube 28 is fixedly connected to the bottom of the moving plate 212. The second limiting ring 29 is fixedly inserted through the outer wall of the connecting tube 21. The inner diameter of the second limiting ring 29 is consistent with the diameter of the connecting tube 21. The side of the second limiting ring 29 closest to the sliding ring 26 is in contact with the sliding ring 26, thereby limiting the sliding ring 26 through the first limiting ring 25 and the second limiting ring 29. A circular hole 5 is opened through the side wall of the rotating disk 210. The outer wall of the connecting tube 21 moves through the circular hole 5, thereby allowing the connecting tube 21 and the rotating disk 210 to be rotatably connected. The limiting disc 211 is fixedly connected to the end of the connecting tube 21 away from the lead wire 22. The diameter of the 11 is larger than that of the connecting cylinder 21, thereby limiting and constraining the rotating disk 210 through the limiting disc 211. A square hole is opened through the side wall of the rotating disk 210, and the side wall of the moving plate 212 is movably opened through the square hole, so that the moving plate 212 is slidably connected to the rotating disk 210. The moving plates 212 are symmetrically arranged, and an installation groove is opened inside the moving plate 212. The lead wire 213 is movably opened through the installation groove, so that the lead wire 213 is movably connected to the moving plate 212. The end of the lead wire 213 near the connecting strip 27 is fixedly connected to the top of the connecting strip 27, thereby forming a passage. The bottom of the stationary contact 214 is fixedly connected to the top of the moving plate 212.

[0050] The connecting square tube 28 will drive the sliding ring 26 to rotate. During the rotation, the connecting strip 27 and the connecting ring 24 are always in contact. When the drive rod 217 slides to the other end of the arc-shaped slide groove 215, the faulty stationary contact 214 and the normally usable stationary contact 214 are swapped, so that the relay can continue to be used.

[0051] Reference Figure 8 , Figure 9One end of the lead wire 213 away from the connecting strip 27 is fixedly connected to the bottom of the stationary contact 214. An arc-shaped groove 215 is formed through the side wall of the insulating frame 16. The center of the arc-shaped groove 215 is concentric with the center of the rotating disk 210, thus preventing structural failures. A square block 216 is fixedly connected to the side wall of the rotating disk 210. A drive rod 217 is fixedly connected to the side of the square block 216 near the insulating frame 16, facilitating the rotation of the rotating disk 210 via the square block 216. The side wall of the drive rod 217 moves through the arc-shaped groove 215, allowing the arc-shaped groove 215 and the drive rod 217 to slide together, limiting the movement of the drive rod 217. A positioning block 218 is fixedly connected to the end of the drive rod 217 away from the square block 216. A handle 219 is fixedly connected to the side of the positioning block 218 away from the drive rod 217. The handle 219 is made of insulating rubber, preventing injury to the operator. In case of injury to the operator, the handle 219 facilitates the movement of the drive rod 217. The rotating shaft 220 is fixedly connected to the side wall of the insulating frame 16. The side wall of the locking block 221 has a through hole six, through which the locking block 221 moves, thereby enabling the locking block 221 to rotate and connect with the rotating shaft 220. The side wall of the locking block 221 has a slot that matches the shape of the positioning block 218, thereby enabling the locking block 221 to engage with the positioning block 218 and move. The top of plate 212 is fixedly connected to the bottom of positioning plate 222 by bolts. The side of rotating disk 210 near positioning plate 222 is fixedly connected to the side wall of positioning plate 222 by bolts. When armature 13 is attracted by coil group 17 and is in a horizontal state, the moving contact 15 at the bottom of moving contact plate 14 will contact the stationary contact 214 below. When armature 13 drives moving contact plate 14 to rotate upward, the moving contact 15 at the top of moving contact plate 14 will contact the stationary contact 214 above.

[0052] Finally, the operator rotates the locking block 221 to lock it into place with the positioning block 218, thereby fixing the positioning block 218. The current flows through the moving contact 15 and then through the stationary contact 214, and then through the lead wire 213, connecting strip 27, connecting ring 24, connecting piece 23, and pin wire 22 in sequence to form a complete circuit.

[0053] Among them, armature 13, moving contact plate 14, coil group 17, and lead wire 22 are all existing technologies, and their structural principles will not be described in detail. They also include power lines, power switches, and contact leads, which are not the main technologies and will not be described in detail.

[0054] The implementation principle of a relay with silver contacts in this application embodiment is as follows:

[0055] When a contact malfunctions during use, the operator first releases the latching block 221 from the positioning block 218. Then, the operator grips the handle 219, causing the handle 219 to rotate synchronously with the stationary contact 214 and the connecting square tube 28. The connecting square tube 28 then rotates the sliding ring 26. During the rotation, the connecting strip 27 and the connecting ring 24 remain in contact. When the drive rod 217 slides to the other end of the arc-shaped groove 215, the faulty stationary contact 214 and the normally usable stationary contact 214 have swapped positions, allowing the relay to continue to be used. Finally, the operator rotates the latching block 221, causing the latching block 221 to latch with the positioning block 218, thus fixing the positioning block 218. The current flows through the moving contact 15 and then through the stationary contact 214, and then sequentially through the lead wire 213, connecting strip 27, connecting ring 24, connecting piece 23, and lead wire 22 to form a complete circuit.

[0056] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A relay with silver contacts, comprising an inner frame (1), wherein a connecting block (11) is fixedly connected to the side wall of the inner frame (1), an insulating frame (16) is fixedly connected to the side wall of the inner frame (1), and a coil assembly (17) is fixedly connected to the top of the inner wall of the inner frame (1), characterized in that: The side wall of the insulating frame (16) is provided with a replacement mechanism (2); The replacement mechanism (2) is used for temporarily replacing the static contact (214) when the relay fails during use; The replacement mechanism (2) comprises a rotating disc (210) arranged on the side wall of the insulating frame (16), the side wall of the rotating disc (210) movably arranged with a moving plate (212), the top of the moving plate (212) fixedly arranged with a static contact (214), the side wall of the insulating frame (16) arranged with an arc-shaped sliding groove (215), the inside of the arc-shaped sliding groove (215) slidably arranged with a driving rod (217), one end of the driving rod (217) fixedly arranged with a positioning block (218), and the top of the moving plate (212) fixedly arranged with a positioning plate (222).

2. A relay having silver contacts as claimed in claim 1, characterized in that: The replacement mechanism (2) further comprises a connecting cylinder (21) fixedly penetrating the side wall of the insulating frame (16), the side wall of the connecting cylinder (21) inserted with a pin wire (22), the side wall of the pin wire (22) fixedly connected with a connecting sheet (23) fixedly penetrating the connecting cylinder (21), the end of the connecting sheet (23) away from the pin wire (22) fixedly connected with a connecting ring (24) clamped with the outer wall of the connecting cylinder (21), the outer wall of the connecting cylinder (21) fixedly penetrated with a first limiting circular ring (25), the outer wall of the connecting cylinder (21) movably penetrated with a sliding circular ring (26), the inside of the sliding circular ring (26) fixedly penetrated with a connecting strip (27), the outer wall of the connecting strip (27) fixedly penetrated with a connecting square cylinder (28) fixedly connected with the outer wall of the sliding circular ring (26), and the outer wall of the connecting cylinder (21) fixedly penetrated with a second limiting circular ring (29).

3. A relay having silver contacts as claimed in claim 2, characterized in that: The outer wall of the connecting cylinder (21) movably penetrates the rotating disc (210), and the end of the connecting cylinder (21) away from the pin wire (22) is fixedly connected with a limiting disc (211).

4. A relay having silver contacts as claimed in claim 3, characterized in that: The side wall of the rotating disc (210) movably penetrates the side wall of the moving plate (212).

5. A relay having silver contacts as claimed in claim 4, characterized in that: The inside of the moving plate (212) movably penetrates a lead wire (213), the lead wire (213) is fixedly connected with the connecting strip (27), the top of the moving plate (212) is fixedly connected with the bottom of the static contact (214), and the bottom of the moving plate (212) is fixedly connected with the connecting square cylinder (28).

6. A relay having silver contacts as claimed in claim 5, characterized in that: The arc-shaped sliding groove (215) is penetrated and arranged on the side wall of the insulating frame (16), the side wall of the rotating disc (210) is fixedly connected with a square block (216), and the side of the square block (216) close to the insulating frame (16) is fixedly connected with the driving rod (217).

7. A relay having silver contacts as claimed in claim 6, characterized in that: The side wall of the driving rod (217) movably penetrates the arc-shaped sliding groove (215), and the end of the driving rod (217) away from the square block (216) is fixedly connected with the positioning block (218). The side of the positioning block (218) away from the driving rod (217) is fixedly connected with a handle (219), the side wall of the insulating frame (16) is fixedly connected with a rotating shaft (220), and the side wall of the rotating shaft (220) movably penetrates a clamping block (221) clamped with the positioning block (218).

8. A relay having silver contacts as defined in claim 1, characterized in that: The bottom of the positioning plate (222) is fixedly connected with the top of the moving plate (212), and the side wall of the positioning plate (222) is fixedly connected with the rotating disc (210).

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