Relay capable of prolonging electrical endurance

Abstract

The relay comprises a housing assembly, a driving assembly, a transmission assembly and a control assembly, the housing assembly comprises a base, an upper cover and a magnet fixing seat, a first magnet is arranged below the base, a second magnet is correspondingly arranged above the upper cover, the first magnet is parallel to the second magnet, and the driving assembly is connected with the transmission assembly. The magnet fixing seat is provided with a first groove and a second groove, the base and the upper cover are fixedly connected with the magnet fixing seat, and the first magnet and the second magnet are embedded into the first groove and the second groove respectively; the control assembly comprises a static piece and a movable piece, the static piece is provided with a static contact, the movable piece is provided with a bow piece group, the bow piece group is provided with a movable contact parallel to the static contact, and the moving direction of the movable contact is perpendicular to the shortest distance between the first magnet and the second magnet; according to the utility model, two magnets are additionally arranged in the vertical direction of the contact movement, so that the electric arc is lengthened and cooled, the ablation of the contact is reduced, and the electrical life of the relay is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a relay with improved electrical life. Background Technique

[0002] A relay is an automatic switching element with isolation function and is widely used. Its main function is to remotely control the on-off of a high-voltage circuit with a low voltage, and it plays roles such as automatic regulation, safety protection, and circuit conversion in the circuit;

[0003] The motor-driven relay is different from the traditional electromagnetic relay. Its main principle is that a micro-motor controlled by a small current drives a transmission mechanism to quickly close or open the electrode contacts to achieve the purpose of "switching" the circuit. It has the advantages of fast action, small size, low power consumption, and high stability, and is widely used in high-power and high-current industries;

[0004] In a relay with contacts, when the two contacts open and close instantaneously, electrons escape due to primary electron emission on the surface of the contact metal. Gas atoms or molecules in the gap will be ionized to generate electrons and ions. In addition, the bombardment of the emission surface by electrons or ions will cause secondary electron emission. When the ion concentration in the gap is large enough, the gap is electrically broken down and an arc occurs. The arc has a thermal effect and is easy to ablate and adhere, and even self-ignite to cause a fire, seriously shortening the life of the relay. How to efficiently extinguish the arc and improve the life of the relay is very important;

[0005] The existing arc extinguishing methods for motor-driven relays mostly adopt methods such as quickly pulling open the electrode contacts or adding arc extinguishing grids, etc., which have problems such as short life, instability, and complex structure. Content of the Utility Model

[0006] The utility model proposes a relay with improved electrical life to more precisely solve the problems of short life, instability, and complex structure mentioned above.

[0007] The utility model is realized through the following technical solutions:

[0008] The utility model proposes a relay with improved electrical life, which includes a housing assembly, a driving assembly, a transmission assembly, and a control assembly. The housing assembly includes a base, an upper cover, and a magnet fixing seat. The base and the upper cover are fixedly connected; a first magnet is provided below the base, and a second magnet is correspondingly provided above the upper cover. The first magnet and the second magnet are parallel. The magnet fixing seat is provided with a first groove and a second groove. The base and the upper cover are fixedly connected to the magnet fixing seat, and the first magnet and the second magnet are respectively embedded in the first groove and the second groove;

[0009] The control component includes a stationary piece and a movable piece. The stationary piece is provided with stationary contacts, and the movable piece is provided with a set of bow pieces. The set of bow pieces is provided with movable contacts parallel to the stationary contacts, and the moving direction of the movable contacts is perpendicular to the shortest distance between the first magnet and the second magnet.

[0010] The transmission component includes a first-stage gear, a second-stage gear, a sector gear, and a push-pull rod. The first-stage gear is in transmission connection with the drive component, the second-stage gear is in meshing transmission with the first-stage gear, the sector gear is in meshing transmission with the second-stage gear, one end of the push-pull rod is slidably connected to the sector gear, and the other end is fixedly connected to the set of bow pieces.

[0011] Further, the drive component further includes a motor and a motor cover. The motor cover is annularly arranged around one side of the motor, and the motor and the motor cover are vertically arranged inside the base.

[0012] Further, an output gear is provided on the output shaft of the motor. The output gear is fixedly connected to the output shaft of the motor, and the output gear is in meshing transmission with the first-stage gear.

[0013] Further, the transmission component is further provided with a first rotating shaft, a second rotating shaft, and a third rotating shaft. The first-stage gear is slidably connected to the first rotating shaft, the second-stage gear is slidably connected to the second rotating shaft, and the sector gear is slidably connected to the third rotating shaft.

[0014] Further, the base is provided with a boss perpendicular to the base. The upper cover is provided with a mounting groove corresponding to the base. One end of the first rotating shaft, the second rotating shaft, and the third rotating shaft is embedded in the boss, and one end is embedded in the mounting groove of the upper cover and fixedly connected.

[0015] Further, the sector gear is further provided with a pull handle. The pull handle is cylindrical. One end of the push-pull rod is provided with a first placement hole. The pull handle passes through the first placement hole, and the push-pull rod is slidably connected to the sector gear.

[0016] Further, the set of bow pieces includes a first bow piece, a second bow piece, and a third bow piece, which are sequentially stacked and fixedly connected to the movable piece.

[0017] Further, the other end of the push-pull rod is provided with a second placement hole. The set of bow pieces is further provided with a spring piece. The set of bow pieces and the spring piece pass through the second placement hole and are fixedly connected to the push-pull rod.

[0018] Further, the base is further provided with a first card slot and a second card slot. One end of the stationary piece is located inside the base, and the other end passes through the first card slot. One end of the movable piece is located inside the base, and the other end passes through the second card slot.

[0019] Further, the base is further provided with a third card slot, and the driving assembly is further provided with a first wire and a second wire. One end of the first wire and the second wire is fixedly connected to the driving assembly, and the other ends both pass through the third card slot and are located outside the housing assembly.

[0020] Advantages of the present utility model:

[0021] 1. In the present utility model, by adding two magnets in the vertical direction of the contact movement, the arc is elongated under the action of the magnetic field, the temperature is reduced, the ablation of the contact can be effectively reduced, and the service life of the relay is improved;

[0022] 2. In the present utility model, by surrounding the motor with the motor cover, the creepage distance between the motor and the moving piece can be increased, the breakdown caused by the proximity of strong electricity and weak electricity can be avoided, and the operation safety of the relay is improved;

[0023] 3. In the present utility model, by forming a pre-pressure on the contact by a set of bow pieces formed by multiple bow pieces, the moving contact and the static contact can be closed more tightly, and the reliability of the relay control is improved;

[0024] 4. In the present utility model, by placing the magnet outside the housing, the internal parts are more compact, the product volume can be made smaller, and the structure can be made simpler. Description of the drawings

[0025] Figure 1 It is an overall structure diagram of a relay for improving the electrical life in an embodiment of the present utility model;

[0026] Figure 2 It is an internal top view schematic diagram of a relay for improving the electrical life in an embodiment of the present utility model;

[0027] Figure 3 It is an explosion schematic diagram of a relay for improving the electrical life in an embodiment of the present utility model;

[0028] Figure 4 It is a top view schematic diagram of the base in an embodiment of the present utility model;

[0029] Figure 5 It is a three-dimensional schematic diagram of the magnet fixing seat in an embodiment of the present utility model;

[0030] Figure 6 It is a three-dimensional schematic diagram of the push-pull rod in an embodiment of the present utility model;

[0031] Figure 7 It is a three-dimensional schematic diagram of the sector gear in an embodiment of the present utility model;

[0032] Figure 8This is the overall structure diagram of a three-phase relay for improving electrical life in an embodiment of the present utility model;

[0033] Figure 9 This is the internal top view schematic diagram of a three-phase relay for improving electrical life in an embodiment of the present utility model.

[0034] Label description: 1. Base; 11. First magnet; 12. First card slot; 13. Second card slot; 14. Third card slot; 15. Boss; 2. Upper cover; 21. Second magnet; 3. Magnet fixing seat; 31. First groove; 32. Second groove; 4. Motor; 41. First wire; 42. Second wire; 43. Output gear; 44. Motor cover; 51. First-stage gear; 511. First rotating shaft; 52. Second-stage gear; 521. Second rotating shaft; 53. Sector gear; 531. Third rotating shaft; 532. Pull handle; 6. Push-pull rod; 61. First placement hole; 62. Second placement hole; 7. Static plate; 71. Static contact; 8. Moving plate; 81. First bow-shaped piece; 82. Second bow-shaped piece; 83. Third bow-shaped piece; 84. Elastic piece; 85. Moving contact. Detailed implementation manners

[0035] In order to more clearly and completely illustrate the technical solution of the present utility model, the present utility model will be further described below with reference to the accompanying drawings.

[0036] Please refer to Figures 1-9 , the present utility model provides a relay for improving electrical life, including a housing assembly, a driving assembly, a transmission assembly and a control assembly. The housing assembly includes a base 1, an upper cover 2 and a magnet fixing seat 3. The base 1 and the upper cover 2 are fixedly connected. A first magnet 11 is provided below the base 1, and a second magnet 21 is correspondingly provided above the upper cover 2. The first magnet 11 and the second magnet 21 are parallel. The magnet fixing seat 3 is provided with a first groove 31 and a second groove 32. The base 1 and the upper cover 2 are respectively fixedly connected to the magnet fixing seat 3, and the first magnet 11 and the second magnet 21 are respectively embedded in the first groove 31 and the second groove 32;

[0037] The control assembly includes a static plate 7 and a moving plate 8. The static plate 7 is provided with a static contact 71. The moving plate 8 is provided with a set of bow-shaped pieces. The set of bow-shaped pieces is provided with a moving contact 85 parallel to the static contact 71. The moving direction of the moving contact 85 is perpendicular to the shortest distance between the first magnet 11 and the second magnet 21;

[0038] The transmission assembly includes a first-stage gear 51, a second-stage gear 52, a sector gear 53 and a push-pull rod 6. The first-stage gear 51 is in transmission connection with the driving assembly. The second-stage gear 52 is in meshing transmission with the first-stage gear 51. The sector gear 53 is in meshing transmission with the second-stage gear 52. One end of the push-pull rod 6 is slidably connected to the sector gear 53, and the other end of the push-pull rod 6 is fixedly connected to the set of bow-shaped pieces.

[0039] In this embodiment, a relay for improving electrical life includes a housing assembly, a driving assembly, a transmission assembly, and a control assembly. The housing assembly includes a base 1, an upper cover 2, and a magnet fixing seat 3. The base 1 and the upper cover 2 are fixedly connected. A first magnet 11 is provided below the base 1, and a second magnet 21 is correspondingly provided above the upper cover 2. The first magnet 11 and the second magnet 21 are magnetically attracted to each other, and the first magnet 11 and the second magnet 21 are on a straight line. The magnet fixing seat 3 is provided with a first groove 31 and a second groove 32. The base 1 and the upper cover 2 are fixedly connected to the magnet fixing seat 3, and the first magnet 11 and the second magnet 21 are respectively embedded in the first groove 31 and the second groove 32. In a specific embodiment, the base 1 is provided with an elastic straight triangular protrusion, and the upper cover 2 is provided with a through hole. The elastic straight triangular protrusion clamps the through hole to fixedly connect the base 1 and the upper cover 2. The four corners of the magnet fixing seat 3 are provided with hook claws, and the base 1 and the upper cover 2 are correspondingly provided with hook grooves. The hook claws are buckled into the hook grooves, and the magnet fixing seat 3 forms a snap connection with the base 1 and the upper cover 2 from the side to form a tightly connected housing assembly.

[0040] The control assembly includes a static contact piece 7 and a moving contact piece 8. The static contact piece 7 is provided with a static contact point 71. The moving contact piece 8 is provided with a bow piece group. The bow piece group is provided with a moving contact point 85 and a spring piece 84 parallel to the static contact point 71. The moving direction of the moving contact point 85 is perpendicular to the shortest distance between the first magnet 11 and the second magnet 21. The magnetic field formed by the two magnets can lengthen the arc length, realize the cooling of the arc, reduce the ablation of the contact points, and improve the life of the relay.

[0041] The transmission assembly includes a first-stage gear 51, a second-stage gear 52, a sector gear 53, and a push-pull rod 6. The first-stage gear 51 is in transmission connection with the driving assembly. The second-stage gear 52 is in meshing transmission with the first-stage gear 51. The sector gear 53 is in meshing transmission with the second-stage gear 52. One end of the push-pull rod 6 is slidably connected to the sector gear 53, and the other end of the push-pull rod 6 is fixedly connected to the bow piece group and the spring piece 84. The rotation of the driving assembly realizes the forward and backward movement of the push-pull rod 6, and the forward and backward movement of the push-pull rod 6 realizes the closing and opening of the moving contact point 85 and the static contact point 71.

[0042] When the contact is in the open state, a positive pulse current is applied to the motor 4, and the motor 4 rotates forward. The output gear 43 on the motor 4 drives the first-stage gear 51 to rotate in reverse. The first-stage gear 51 drives the second-stage gear 52 to rotate forward. The second-stage gear 52 drives the sector gear 53 to rotate in reverse. The handle 532 on the sector gear 53 drives the push-pull rod 6 to move towards the static contact 71. The push-pull rod 6 drives the moving contact 85 on the bow piece group to close and connect with the static contact 71. When a negative pulse current is applied to the motor 4, the motor 4 rotates in reverse. The output gear 43 on the motor 4 drives the first-stage gear 51 to rotate forward. The first-stage gear 51 drives the second-stage gear 52 to rotate in reverse. The second-stage gear 52 drives the sector gear 53 to rotate forward. The handle 532 on the sector gear 53 drives the push-pull rod 6 to move in the opposite direction of the static contact 71. When the push-pull rod 6 drives the bow piece group to move in the opposite direction of the static contact 71 to a specified distance, the moving contact 85 and the static contact 71 are completely disconnected. When an arc is generated at the moment when the static contact 71 and the moving contact 85 are disconnected and closed, since there are two magnets with magnetic attraction in the vertical direction of the movement of the moving contact 85, the magnets generate a magnetic field. The essence of the arc is charged particles. The charged particles are acted upon by a force under the action of the magnetic field, the arc is stretched, the temperature is reduced, the ablation of the contact is reduced, and the service life of the relay is improved.

[0043] The present utility model provides a relay for improving the electrical life, which is not only applicable to single-phase relays but also can be applied to three-phase relays. In a specific embodiment, the three-phase relay is provided with three pairs of moving pieces 8 and static pieces 7, the three-phase relay is further provided with three pairs of moving contacts 85 and static contacts 71, and the three-phase relay is further provided with three pairs of magnets with magnetic attraction. The moving contacts 85 are all fixed on the moving pieces 8, the static contacts 71 are all fixed on the static pieces 7. The first magnets 11 are all arranged below the base 1, the second magnets 21 are all arranged above the upper cover 2, the magnets are all embedded in the grooves provided in the magnet fixing seat 3, and the moving direction of the moving contact 85 is perpendicular to the shortest distance between the first magnet 11 and the second magnet 21. The rotation of the motor 4 realizes the closing and separation of the three pairs of moving contacts 85 and static contacts 71. The three pairs of magnets respectively extinguish the arcs generated between the contacts, and the electrical life of the three-phase relay is improved by using magnets to extinguish the arcs.

[0044] The present utility model provides that by adding two magnets in the vertical direction of the movement of the contacts, the arc is stretched under the action of the magnetic field and the temperature is reduced, which can effectively reduce the ablation of the contacts and improve the service life of the relay. The present utility model provides that by surrounding the motor 4 with the motor cover 44, the creepage distance between the motor 4 and the moving piece 8 can be increased, avoiding breakdown caused by the proximity of strong electricity and weak electricity, and improving the safety of the relay operation. The present utility model provides that by forming a bow piece group by a plurality of bow pieces to form a pre-pressure on the contacts, the moving contact 85 and the static contact 71 can be closed more tightly, improving the reliability of the relay control. The present utility model provides that by placing the magnets outside the housing, the internal parts are more compact, the product volume can be smaller, and the structure can be simpler.

[0045] Please refer to Figure 3 and Figure 4 , the driving assembly further includes a motor 4 and a motor cover 44. The motor cover 44 is annular and surrounds one side of the motor 4. The motor 4 and the motor cover 44 are vertically arranged in the base 1.

[0046] In specific implementation: The driving assembly further includes a motor 4 and a motor cover 44. The motor cover 44 is annular and surrounds one side of the motor 4. The motor cover 44 can increase the creepage distance between the motor 4 and the moving piece 8, avoid breakdown caused by the proximity of strong electricity and weak electricity, and improve the safety of the relay operation; the motor 4 and the motor cover 44 are perpendicular to the base 1. The base 1 is provided with a boss 15 to form a cavity, and the motor 4 and the motor cover 44 are embedded in the cavity and fixedly connected to the base 1.

[0047] Please refer to Figures 1-3 , an output gear 43 is provided on the output shaft of the motor 4. The output gear 43 is fixedly connected to the output shaft of the motor 4, and the output gear 43 meshes with and drives the first-stage gear 51.

[0048] In specific implementation: An output gear 43 is provided on the output shaft of the motor 4. The output gear 43 is fixedly connected to the output shaft of the motor 4. In a specific embodiment, both the first-stage gear 51 and the second-stage gear 52 include a large gear above and a small gear below. The large gear above the first-stage gear 51 meshes with and drives the output gear 43. The small gear below the first-stage gear 51 meshes with and drives the large gear above the second-stage gear 52. The small gear below the second-stage gear 52 meshes with and drives the sector gear 53. When the motor 4 rotates forward, the output gear 43 on the motor 4 drives the first-stage gear 51 to rotate in reverse. The first-stage gear 51 drives the second-stage gear 52 to rotate forward. The second-stage gear 52 drives the sector gear 53 to rotate in reverse. When the motor 4 rotates in reverse, the running directions of the gears are opposite.

[0049] Please refer to Figures 1-4 , the transmission assembly is further provided with a first rotating shaft 511, a second rotating shaft 521 and a third rotating shaft 531. The first-stage gear 51 is slidably connected to the first rotating shaft 511. The second-stage gear 52 is slidably connected to the second rotating shaft 521. The sector gear 53 is slidably connected to the third rotating shaft 531. The base 1 is provided with a boss 15. The boss 15 is provided with a mounting hole, and the boss 15 is perpendicular to the base 1. The upper cover 2 is provided with a mounting groove corresponding to the base 1. One end of the first rotating shaft 511, the second rotating shaft 521 and the third rotating shaft 531 is embedded in the mounting hole of the boss 15, and one end is embedded in the mounting groove of the upper cover 2 and fixedly connected.

[0050] In specific implementation: The transmission assembly further includes a first rotating shaft 511, a second rotating shaft 521, and a third rotating shaft 531. The first-stage gear 51, the second-stage gear 52, and the sector gear 53 are all provided with mounting holes. One end of the rotating shaft is inserted into the gear mounting hole. The first-stage gear 51 is slidably connected to the first rotating shaft 511, the second-stage gear 52 is slidably connected to the second rotating shaft 521, and the sector gear 53 is slidably connected to the third rotating shaft 531. The base 1 is provided with a boss 15, and the boss 15 is provided with a mounting hole, and the boss 15 is perpendicular to the base 1. The upper cover 2 is provided with a mounting groove corresponding to the base 1. The other ends of the first rotating shaft 511, the second rotating shaft 521, and the third rotating shaft 531 are inserted into the mounting hole of the boss 15 and fixed to the mounting groove of the upper cover 2 at one end, realizing the fixed connection of each gear inside the housing.

[0051] Please refer to Figures 6-7 , the sector gear 53 is further provided with a pull handle 532. One end of the push-pull rod 6 is provided with a first placement hole 61, and the pull handle 532 passes through the first placement hole 61. The push-pull rod 6 is slidably connected to the sector gear 53.

[0052] In specific implementation: In a specific embodiment, a pull handle 532 is provided below the sector gear 53. In a specific embodiment, the pull handle 532 has a columnar structure; one end of the push-pull rod 6 is provided with a first placement hole 61, and the pull handle 532 passes through the first placement hole 61. The push-pull rod 6 is slidably connected to the sector gear 53. When the sector gear 53 rotates, it will drive the push-pull rod 6 to move back and forth.

[0053] Please refer to Figures 1-3 , the bow piece group includes a first bow piece 81, a second bow piece 82, and a third bow piece 83, and they are sequentially stacked and fixedly connected to the moving piece 8. The other end of the push-pull rod 6 is provided with a second placement hole 62. The bow piece group is further provided with a spring piece 84. The bow piece group and the spring piece 84 pass through the second placement hole 62 and are fixedly connected to the push-pull rod 6.

[0054] In specific implementation: The bow piece group includes a first bow piece 81, a second bow piece 82, and a third bow piece 83, and they are sequentially stacked to form a bow piece group. In a specific embodiment, the bow piece group has a V-shaped structure, with better elasticity and higher strength, which is beneficial to applying a pre-pressure and promoting the stable closing of the static contact 71 and the moving contact 85; both ends of the bow piece group are provided with through holes. The moving piece 8 is provided with a convex block, and the convex block of the moving piece 8 passes through the through hole at one end of the bow piece group and is fixedly connected to the bow piece group. The moving contact 85 passes through the through hole at the other end of the bow piece group and is fixedly connected to the bow piece group; the other end of the push-pull rod 6 is provided with a second placement hole 62. The bow piece group is further provided with a spring piece 84. The moving piece 8 is provided with a through hole, and the push-pull rod 6 passes through the through hole of the moving piece 8. The bow piece group and the spring piece 84 pass through the second placement hole 62 and are fixedly connected to the push-pull rod 6. When the push-pull rod 6 moves back and forth, it will drive the bow piece group to move back and forth, realizing the closing and disconnection of the static contact 71 and the moving contact 85.

[0055] Please refer to Figures 3-4, the base 1 is provided with a first card slot 12 and a second card slot 13. One end of the static piece 7 is located inside the base 1, and the other end passes through the first card slot 12 and is located outside the housing assembly. One end of the moving piece 8 is located inside the base 1, and the other end passes through the second card slot 13 and is located outside the housing assembly. The base 1 is further provided with a third card slot 14. The driving assembly is further provided with a first wire 41 and a second wire 42. One end of the first wire 41 and the second wire 42 is fixedly connected to the driving assembly, and one end of each passes through the third card slot 14 and is located outside the housing assembly.

[0056] In specific implementation: the base 1 is provided with a first card slot 12 and a second card slot 13. One end of the static piece 7 is located inside the base 1, and the other end passes through the first card slot 12 and is located outside the housing assembly. One end of the moving piece 8 is located inside the base 1, and the other end passes through the second card slot 13 and is located outside the housing assembly. While reducing the volume of the relay, it is beneficial to the connection with external products. The base 1 is further provided with a third card slot 14. The motor 4 of the driving assembly is further provided with a first wire 41 and a second wire 42. One end of the first wire 41 and the second wire 42 is fixedly connected to the motor 4, and one end of each passes through the third card slot 14 and is located outside the housing assembly, which is beneficial to connecting the power supply to drive the motor 4.

[0057] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application accordingly. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present application, or directly or indirectly applied to other related technical fields, shall be similarly included in the patent protection scope of the present application.

Claims

1. A relay for improving electrical life, characterized in that, It includes a housing assembly, a drive assembly, a transmission assembly, and a control assembly. The housing assembly includes a base, an upper cover, and a magnet fixing seat. The base and the upper cover are fixedly connected. A first magnet is provided below the base, and a second magnet is correspondingly provided above the upper cover. The first magnet and the second magnet are parallel. The magnet fixing seat is provided with a first groove and a second groove. The base and the upper cover are fixedly connected to the magnet fixing seat, and the first magnet and the second magnet are respectively embedded in the first groove and the second groove. The control assembly includes a stationary piece and a movable piece. The stationary piece is provided with stationary contacts, and the movable piece is provided with a set of bow pieces. The set of bow pieces is provided with movable contacts parallel to the stationary contacts. The moving direction of the movable contacts is perpendicular to the shortest distance between the first magnet and the second magnet. The transmission assembly includes a first-stage gear, a second-stage gear, a sector gear, and a push-pull rod. The first-stage gear is in transmission connection with the drive assembly. The second-stage gear is in meshing transmission with the first-stage gear. The sector gear is in meshing transmission with the second-stage gear. One end of the push-pull rod is slidably connected to the sector gear, and the other end is fixedly connected to the set of bow pieces.

2. The relay for improving electrical life according to claim 1, characterized in that, The drive assembly further includes a motor and a motor cover. The motor cover is annularly arranged around one side of the motor. The motor and the motor cover are vertically arranged inside the base.

3. The relay for improving electrical life according to claim 2, characterized in that, An output gear is provided on the output shaft of the motor. The output gear is fixedly connected to the output shaft of the motor, and the output gear is in meshing transmission with the first-stage gear.

4. A relay for improving electrical life according to claim 1, characterized in that, The transmission assembly is further provided with a first rotating shaft, a second rotating shaft, and a third rotating shaft. The first-stage gear is slidably connected to the first rotating shaft. The second-stage gear is slidably connected to the second rotating shaft. The sector gear is slidably connected to the third rotating shaft.

5. The relay for improving electrical life according to claim 4, characterized in that, The base is provided with a boss perpendicular to the base. The upper cover is provided with a mounting groove corresponding to the base. One end of the first rotating shaft, the second rotating shaft, and the third rotating shaft is embedded in the boss, and the other end is embedded in the mounting groove of the upper cover for fixed connection.

6. The relay for improving electrical life according to claim 1, wherein The sector gear is further provided with a pull handle. The pull handle is cylindrical. One end of the push-pull rod is provided with a first placement hole. The pull handle passes through the first placement hole, and the push-pull rod is slidably connected to the sector gear.

7. The relay for improving electrical life according to claim 1, characterized in that, The set of bow pieces includes a first bow piece, a second bow piece, and a third bow piece, which are stacked in sequence and fixedly connected to the movable piece.

8. A relay for improving electrical life according to claim 1, characterized in that, The other end of the push-pull rod is provided with a second placement hole. The set of bow pieces is further provided with a spring piece. The set of bow pieces and the spring piece pass through the second placement hole and are fixedly connected to the push-pull rod.

9. The relay for improving electrical life according to claim 1, characterized in that, The base is further provided with a first card slot and a second card slot. One end of the stationary piece is located inside the base, and the other end passes through the first card slot. One end of the movable piece is located inside the base, and the other end passes through the second card slot.

10. A relay for improving electrical life according to claim 9, characterized in that, The base is further provided with a third card slot. The drive assembly is further provided with a first wire and a second wire. One end of the first wire and the second wire is fixedly connected to the drive assembly, and the other ends both pass through the third card slot and are located outside the housing assembly.

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