Novel contactor

Abstract

The invention discloses a novel contactor which comprises a left shell and a right shell, a plurality of first wiring frames are arranged on the left shell, the first wiring frames are connected with a plurality of static contacts, a plurality of second wiring frames are arranged on the right shell, the second wiring frames are connected with moving contacts aligned with the static contacts, and the second wiring frames are connected with conducting strips. A first sliding groove and a framework are arranged in the right shell, a pushing piece is movably arranged in the first sliding groove, the pushing piece is provided with an opening allowing the movable contact spring assembly to be inserted, an iron core is arranged in the framework, a swing piece is movably arranged in the right shell, a permanent magnet is arranged in the swing piece, and the permanent magnet is arranged in the iron core. The upper side and the lower side of the permanent magnet are provided with armature pieces penetrating out of the front end and the rear end of the swing piece, the two ends of the iron core are connected with yoke pieces inserted between the two armature pieces at the front end and the rear end of the swing piece respectively, the push piece is further provided with a first slot, and the lower end of the swing piece is provided with a linkage part inserted into the first slot. The contactor is lower in power consumption, lower in coil temperature rise and smaller in size.

Description

Technical Field

[0001] This invention relates to the field of contactor technology, and more specifically to a novel contactor. Background Technology

[0002] A contactor is an electrical component that uses electromagnetic principles to control the opening and closing of a circuit. It consists of an electromagnetic system (coil and iron core) and a contact system. A small current control signal drives the electromagnetic system to close or open the contacts, achieving indirect control of a high-current main circuit. It is widely used in power, industrial automation, and other fields, capable of frequent circuit operation and providing both control and protection functions.

[0003] For example, patent application CN202511311185.2 discloses a multifunctional contactor, including an upper housing and a base that snaps into the upper housing. Inside the upper housing and base, from top to bottom, are arranged a movable bracket, a moving iron core, a coil bracket, a coil winding, and a stationary iron core. The coil bracket, coil winding, and stationary iron core are fixed inside the base. The coil bracket is sleeved on the stationary iron core. A return spring is provided between the coil bracket and the moving iron core. The movable bracket is connected to the moving iron core and slides within the upper housing. Multiple sets of movable contact groups are arranged parallel to each other on the movable bracket, and fixed contact groups are provided on both sides of each set of movable contact groups. In this type of contactor, the electromagnetic structure is relatively large. When the moving iron core and the stationary iron core are attracted, they need to overcome not only the weight of the moving iron core itself but also the elastic force of the return spring, resulting in high power consumption and high coil temperature rise. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a new type of contactor with lower power consumption, lower coil temperature rise and smaller size.

[0005] Therefore, the present invention is implemented using the following technical solution: A novel contactor includes a detachably connected left housing and a right housing. The left housing has multiple first wiring frames connected to multiple stationary contacts. The right housing has multiple second wiring frames connected to moving contacts aligned with the stationary contacts. The contactor is characterized by: a conductive sheet connected to each second wiring frame, a moving spring assembly on the conductive sheet, and the moving contact mounted on the moving spring assembly; a first sliding groove and a frame inside the right housing; a pusher plate movably disposed within the first sliding groove, the pusher plate having an opening for inserting the moving spring assembly; an iron core inside the frame, with a coil wound around it; a movably oscillating component inside the right housing, the oscillating component containing a permanent magnet; armature plates extending from the front and rear ends of the oscillating component on the upper and lower sides of the permanent magnet; yoke plates inserted between the two armature plates at the front and rear ends of the oscillating component respectively connected to both ends of the iron core; a first slot on the pusher plate; and a linkage part inserted into the first slot at the lower end of the oscillating component.

[0006] Furthermore, the right housing is provided with a support and a clamping plate. The support is provided with a first round hole, and the clamping plate is provided with a second round hole aligned with the first round hole. The left end of the swinging member is provided with a first column inserted into the first round hole, and the right end is provided with a second column inserted into the second round hole.

[0007] Furthermore, the clamp plate at the left end of the second circular hole is provided with a sleeve that protrudes to the left, and a handle is fitted on the sleeve. The lower end of the handle is inserted into the first slot, and the upper end of the handle is connected to a manual operating mechanism.

[0008] Furthermore, the upper part of the right housing is provided with a second sliding groove, and the second sliding groove is provided with a first through hole running through it from top to bottom. The manual operation mechanism includes a paddle that slides in the second sliding groove. The upper end of the paddle is provided with a button that extends out of the upper end of the right housing, and the lower end is provided with a second slot for inserting the upper end of the handle. The paddles on the front and rear sides of the button are provided with indicator marks. The indicator marks can be exposed through the first through hole or hidden in the second sliding groove as the paddle moves.

[0009] Furthermore, the upper part of the right housing is provided with a third sliding groove, and the lower end of the third sliding groove is provided with a second through hole for the handle to pass through and swing. The manual operation mechanism includes a lever slidably disposed in the third sliding groove. The lower end of the lever is provided with a third slot for the upper end of the handle to be inserted. The third sliding grooves on both the front and rear sides of the lever are provided with buttons that can pass through the upper end of the right housing. The upper end of the buttons is provided with an indicator mark. The front and rear ends of the lever are provided with a first L-shaped plate. The inner side of the upper end of the first L-shaped plate is provided with a transition arc surface, and the outer side of the lower end is provided with a first inclined surface. The upper part of the inner wall of the lever is provided with a second L-shaped plate, and the lower part is provided with an insert block. The lower end of the second L-shaped plate is provided with a second inclined surface that can abut against the transition arc surface. The insert block is provided with a third inclined surface that can abut against the first inclined surface. The lower end of the button is provided with a spring groove, and the spring groove is provided with a spring that abuts against the third sliding groove.

[0010] Furthermore, the movable spring assembly is located on the upper part of the movable spring assembly, and the lower part of the movable spring assembly is fixedly connected to the lower part of the conductive sheet. The lower middle part of the conductive sheet is inclined outward from bottom to top, so that the upper part of the conductive sheet and the movable contact and the movable spring assembly have room for movement.

[0011] Furthermore, the moving spring assembly includes a moving spring, a middle diverter, and a large diverter that abut against each other from the inside out. The moving spring has a first U-shaped portion, the middle diverter has a second U-shaped portion that covers the first U-shaped portion, and the large diverter has a third U-shaped portion that covers the second U-shaped portion.

[0012] Furthermore, the right housing surrounding the moving contact and the stationary contact is provided with multiple sets of opposing fourth slots, each set of fourth slots is fitted with an arc-extinguishing grid plate, and the arc-extinguishing grid plate is provided with a notch to allow the moving contact to move.

[0013] Furthermore, the fourth slot and the number of arc-extinguishing grid plates are four pieces. The notches of the first and second arc-extinguishing grid plates face inward or outward, and the notches of the third and fourth arc-extinguishing grid plates face opposite directions to the notches of the first and second arc-extinguishing grid plates.

[0014] Furthermore, the upper inner wall of the right housing is provided with multiple locking holes, and the lower part of the right housing is provided with multiple threaded holes. The upper part of the left housing is provided with multiple buckles that can be inserted into the right housing and engaged with the locking holes, and the lower part of the left housing is provided with assembly holes aligned with the threaded holes. Screws are screwed into the assembly holes and screwed into the threaded holes to fix the left and right housings.

[0015] By adopting the above technical solution, the magnetic poles of the two yoke iron plates can be changed by controlling the energizing direction of the coil. Different magnetic poles of the two yoke iron plates can attract different armature plates, causing the swinging component to swing back and forth. The swinging component can drive the push plate to slide back and forth through the linkage, thereby driving the moving spring assembly to swing back and forth, so that the moving contact contacts or disengages from the stationary contact, realizing opening and closing control. By controlling the energizing and de-energizing of the coil, the magnetic force of the two yoke iron plates can be controlled. When the coil is de-energized and the magnetic force of the two yoke iron plates disappears, the magnetic force of the permanent magnet itself is used to maintain the attraction and retention state with the armature plate. This structure replaces the existing moving iron core and stationary iron core structure, resulting in lower power consumption, lower coil temperature rise, and smaller size. Attached Figure Description

[0016] The present invention includes the following figures: Figure 1 This is a three-dimensional structural diagram of the present invention (first embodiment of the manual operation mechanism); Figure 2 This is a three-dimensional structural diagram of the present invention with the left housing, clamping plate and part of the first wiring frame removed (first embodiment of manual operation mechanism); Figure 3 This is a schematic diagram of the split structure of the clamping plate and the internal structure of the right shell in the present invention (first embodiment of the manual operation mechanism). Figure 4 This is a three-dimensional structural diagram of the right shell and part of the conductive sheet, the moving spring assembly, the arc-extinguishing grid sheet, the moving contact, and the stationary contact in this invention (first embodiment of the manual operation mechanism); Figure 5 This is a three-dimensional structural diagram of the conductive sheet, moving spring assembly, arc-extinguishing grid sheet, moving contact, and stationary contact in this invention; Figure 6 This is a partial three-dimensional structural diagram of the second embodiment of the manual operation mechanism in this invention.

[0017] Reference numerals: 1. Left housing; 2. Right housing; 3. First wiring frame; 4. Stationary contact; 5. Moving contact; 6. Conductive sheet; 7. Moving spring assembly; 8. First slide groove; 9. Frame; 10. Push plate; 11. Opening; 12. Iron core; 13. Coil; 14. Swinging component; 15. Armature plate; 16. Yoke plate; 17. First slot; 18. Linkage part; 19. Support; 20. Clamping plate; 21. First round hole; 23. Second column; 24. Sleeve; 25. Handle; 26. Second slide groove; 27. First through hole; 28. Paddle; 29. ​​Toggle button; 30. ... 31. Second slot; 32. Third slide groove; 33. Second through hole; 34. Toggle block; 35. Third slot; 36. Button; 37. First L-shaped plate; 38. Transition arc surface; 39. First inclined surface; 40. Second L-shaped plate; 41. Insert block; 42. Second inclined surface; 43. Third inclined surface; 44. Spring; 45. Movable space; 46. Middle flow divider; 47. Large flow divider; 48. First U-shaped part; 49. Second U-shaped part; 50. Third U-shaped part; 51. Fourth slot; 52. Arc extinguishing grid plate; 53. Notch; 54. Locking hole; 55. Threaded hole. Detailed Implementation

[0018] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0019] Refer to the above appendix Figure 1-3As shown, the novel contactor provided by the present invention includes a detachably connected left housing 1 and a right housing 2. The left housing 1 has multiple first wiring frames 3, each connected to multiple stationary contacts 4. The right housing 2 has multiple second wiring frames, each connected to a moving contact 5 aligned with a stationary contact 4. Each second wiring frame is connected to a conductive sheet 6, which has a moving spring assembly 7. The moving contact 5 is mounted on the moving spring assembly 7. The right housing 2 contains a first sliding groove 8 and a frame 9. A pusher 10 is movably disposed within the first sliding groove 8, and the pusher 10 has an opening 11 for inserting the moving spring assembly 7. The frame 9 contains an iron core 12, and a coil 13 is wound around the frame 9. A swinging member 14 is movably disposed within the right housing 2. The component 14 contains a permanent magnet, and armature plates 15 protrude from the front and rear ends of the swing component 14 on both sides of the permanent magnet. The iron core 12 has yoke plates 16 connected to the two armature plates 15 inserted between the front and rear ends of the swing component 14. The push plate 10 also has a first slot 17. The lower end of the swing component 14 has a linkage part 18 inserted into the first slot 17. The right housing 2 contains a support 19 and a clamping plate 20. The support 19 has a first round hole 21, and the clamping plate 20 has a second round hole aligned with the first round hole 21. The left end of the swing component 14 has a first post inserted into the first round hole 21, and the right end has a second post 23 inserted into the second round hole. The clamping plate 20 at the left end of the second round hole has a sleeve 24 protruding to the left. A handle 25 is fitted onto the 24, with its lower end inserted into the first slot 17. A manual operating mechanism is connected to the upper end of the handle 25. The moving spring assembly 7 is located on top of the moving spring assembly 7, and its lower part is fixedly connected to the lower part of the conductive sheet 6. The lower middle part of the conductive sheet 6 is inclined outwards from bottom to top, creating a space 44 between the upper part of the conductive sheet 6 and the moving contact 5 and the moving spring assembly 7. The moving spring assembly 7 includes a moving spring 45, a middle diverter 46, and a large diverter 47 that abut against each other from the inside out. The moving spring 45 has a first U-shaped portion 48, the middle diverter 46 has a second U-shaped portion 49 covering the first U-shaped portion 48, and the large diverter 47 has a third U-shaped portion 50 covering the second U-shaped portion 49. The moving contact... The right housing 2, surrounding the head 5 and the stationary contact 4, is provided with multiple sets of opposing fourth slots 51. Each set of fourth slots 51 is fitted with an arc-extinguishing grid plate 52. The arc-extinguishing grid plate 52 has a notch 53 that allows the moving contact 5 to move. There are four fourth slots 51 and four arc-extinguishing grid plates 52. The notches 53 of the first and second arc-extinguishing grid plates 52 face inward or outward, while the notches 53 of the third and fourth arc-extinguishing grid plates 52 face in the opposite direction to those of the first and second arc-extinguishing grid plates 52. The upper inner wall of the right housing 2 is provided with multiple locking holes 54, and the lower part of the right housing 2 is provided with multiple threaded holes 55. The upper part of the left housing 1 is provided with multiple buckles that can be inserted into the right housing 2 and engage with the locking holes 54, and the lower part of the left housing 1 is provided with mounting holes that align with the threaded holes 55.The left housing 1 and right housing 2 are secured by screwing screws into the mounting holes and threading them into threaded holes 55.

[0020] In this embodiment, the magnetic poles of the two yoke iron plates 16 can be changed by controlling the energizing direction of the coil 13. Different magnetic poles of the two yoke iron plates 16 can attract different armature plates 15, causing the swing member 14 to swing back and forth. The swing member 14 can drive the push plate 10 to slide back and forth through the linkage part 18, thereby driving the moving spring assembly 7 to swing back and forth, so that the moving contact 5 contacts or separates from the stationary contact 4, realizing the opening and closing control. By controlling the energizing and de-energizing of the coil 13, the magnetic force of the two yoke iron plates 16 can be controlled. When the coil 13 is de-energized and the magnetic force of the two yoke iron plates 16 disappears, the magnetic force of the permanent magnet itself is used to maintain the attraction and retention state with the armature plate 15. This structure replaces the existing moving iron core 12 and stationary iron core 12 structure, resulting in lower power consumption, lower coil 13 temperature rise, and smaller size. The swinging component 14 is positioned and oscillated by the first round hole 21 of the first column and the support 19, the second column 23 and the second round hole of the clamping plate 20, so that the swinging component 14 moves more stably and accurately; the sleeve 24 on the clamping plate 20 is used to install the handle 25. The lower end of the handle 25 is inserted into the first slot 17 of the push plate 10. The handle 25 and the push plate 10 can be linked by the manual operation mechanism to realize the opening and closing control. The instantaneous current during a short circuit in the contactor is very large. The current flows through the moving spring assembly 7 to the conductive plate 6. The current directions of the moving spring assembly 7 and the conductive plate 6 are opposite, thus generating a repulsive force between them. This structure provides resistance to short-circuit impacts. At the same time, because the lower middle part of the conductive plate 6 is inclined outward from bottom to top, there is a space 44 for the upper part of the conductive plate 6 and the moving contact 5 and the moving spring assembly 7 to move, preventing the moving spring assembly 7 and the moving contact 5 from touching other parts of the conductive plate 6 when they swing. The arrangement of the first U-shaped part 48, the second U-shaped part 49 and the third U-shaped part 50 makes the structure of the moving spring 45, the middle shunt plate 46 and the large shunt plate 47 more stable and robust, and less prone to deformation after swinging, thus increasing their service life. The arrangement of multiple sets of fourth slots 51 and arc-extinguishing grid plates 52 is used to extinguish the arc generated when the moving contact 5 and the stationary contact 4 come into contact. Moreover, the notches 53 of the third and fourth arc-extinguishing grid plates 52 are opposite to the notches 53 of the first and second arc-extinguishing grid plates 52, surrounding the contact point of the moving contact 5 and the stationary contact 4, resulting in a better arc-extinguishing effect. When assembling the left housing 1 and the right housing 2, insert the buckle of the left housing 1 into the right housing 2 so that the buckle engages with the buckle hole 54. At this time, align the assembly hole with the threaded hole 55, and screw in the screw to complete the fixed assembly of the left housing 1 and the right housing 2.

[0021] Reference Figure 1-4As shown, this is the first embodiment of the manual operating mechanism of the present invention. The upper part of the right housing 2 is provided with a second sliding groove 26, and the second sliding groove 26 is provided with a first through hole 27 extending through it vertically. The manual operating mechanism includes a paddle 28 slidably disposed in the second sliding groove 26. The upper end of the paddle 28 is provided with a knob 29 extending out of the upper end of the right housing 2, and the lower end is provided with a second slot 30 for inserting the upper end of the handle 25. The paddles 28 on both sides of the knob 29 are provided with indicator marks. The indicator marks can be exposed through the first through hole 27 or hidden in the second sliding groove 26 as the paddle 28 moves.

[0022] In this embodiment, by toggling the toggle switch 29, the lever 28 can slide back and forth within the second slide groove 26. The lever 28 can cause the handle 25 to swing back and forth, and the handle 25 can cause the push plate 10 to slide back. The push plate 10 causes the moving spring assembly 7 to swing back and forth, so that the moving contact 5 contacts or disengages from the stationary contact 4, thereby achieving opening and closing control. In addition, by controlling the energizing direction of the coil 13, the swing member 14 can swing back and forth. The swing member 14 can cause the push plate 10 to slide back and forth through the linkage part 18. The push plate 10 can cause the handle 25 to swing back and forth, thereby causing the lever 28 to slide back and forth within the second slide groove 26. The indicator mark moves with the lever 28 and can be exposed through the first through hole 27 or hidden within the second slide groove 26 to indicate the status of the contactor.

[0023] Reference Figure 6 As shown, this is a second embodiment of the manual operating mechanism of the present invention. The upper part of the right housing 2 is provided with a third sliding groove 31. The lower end of the third sliding groove 31 is provided with a second through hole 32 for the handle 25 to pass through and swing. The manual operating mechanism includes a lever 33 slidably disposed within the third sliding groove 31. The lower end of the lever 33 is provided with a third slot 34 for the upper end of the handle 25 to be inserted. Buttons 35 that can pass through the upper end of the right housing 2 are provided in the third sliding grooves 31 on both the front and rear sides of the lever 33. Indicator marks are provided on the upper ends of the buttons 35. Both ends of the 3 have a first L-shaped plate 36. The inner side of the upper end of the first L-shaped plate 36 has a transition arc surface 37 and the outer side of the lower end has a first inclined surface 38. The upper part of the inner wall of the toggle block 33 is provided with a second L-shaped plate 39 and the lower part is provided with an insert block 40. The lower end of the second L-shaped plate 39 is provided with a second inclined surface 41 that can abut against the transition arc surface 37. The insert block 40 is provided with a third inclined surface 42 that can abut against the first inclined surface 38. The lower end of the button 35 is provided with a spring groove. The spring groove is provided with a spring 43 that abuts against the third sliding groove 31.

[0024] In this embodiment, pressing the two buttons 35 can cause the toggle block 33 to slide back and forth in the third slide groove 31. The toggle block 33 can cause the handle 25 to swing back and forth. The handle 25 can cause the push plate 10 to slide back. The push plate 10 causes the moving spring assembly 7 to swing back and forth, so that the moving contact 5 contacts or separates from the stationary contact 4, thereby realizing the opening and closing control. In addition, by controlling the energizing direction of the coil 13, the swing member 14 can swing back and forth. The swing member 14 can drive the push plate 10 to slide back and forth through the linkage part 18. The push plate 10 can drive the handle 25 to swing back and forth, thereby causing the toggle block 33 to slide back and forth in the third slide groove 31. The indicator mark indicates the state of the contactor according to the different rising or falling positions of the button 35. Specifically, when the rear button 35 is pressed, the second L-shaped plate 39 of the button 35 moves downward, so that the second inclined surface 41 abuts against the transition arc surface 37 of the first L-shaped plate 36 at the rear end of the lever 33 and applies pressure to the lever 33. The second inclined surface 41 and the transition arc surface 37 cooperate to move the lever 33 backward. At the same time, the insert 40 of the rear button 35 is inserted into the lower part of the first L-shaped plate 36 at the rear end of the lever 33 to complete the positioning of the rear button 35 and prevent the spring 43 from pushing the rear button 35 up. During the backward movement of the lever 33, the transition arc surface 37 of the first L-shaped plate 36 at its front end abuts against the front button 35 and applies pressure to it. With the action of the spring 43, the front button 35 moves upward. During the upward movement of the front button 35, the third inclined surface 42 of the insert 40 abuts against the first inclined surface 38, giving the lever 33 a backward force to prevent the lever 33 from moving forward.

Claims

1. A novel contactor, comprising a detachably connected left housing and a right housing, wherein the left housing has a plurality of first wiring frames connected to a plurality of stationary contacts, and the right housing has a plurality of second wiring frames connected to moving contacts aligned with the stationary contacts, characterized in that: The second wiring frame is connected to a conductive sheet, and a movable spring assembly is provided on the conductive sheet. The movable contact is provided on the movable spring assembly. The right housing is provided with a first sliding groove and a skeleton. A pusher is movably provided in the first sliding groove. The pusher has an opening for inserting the movable spring assembly. An iron core is provided in the skeleton, and a coil is wound around the skeleton. A swinging member is movably provided in the right housing, and a permanent magnet is provided in the swinging member. Armature plates are provided on the upper and lower sides of the permanent magnet, extending through the front and rear ends of the swinging member. The two ends of the iron core are respectively connected to yoke plates inserted between the two armature plates at the front and rear ends of the swinging member. The pusher is also provided with a first slot. The lower end of the swinging member is provided with a linkage part that inserts into the first slot.

2. The novel contactor according to claim 1, characterized in that: The right housing is provided with a support and a clamping plate. The support has a first round hole, and the clamping plate has a second round hole aligned with the first round hole. The left end of the swinging member has a first column inserted into the first round hole, and the right end has a second column inserted into the second round hole.

3. A novel contactor according to claim 2, characterized in that: The clamp plate at the left end of the second circular hole is provided with a sleeve that protrudes to the left. A handle is fitted on the sleeve, the lower end of the handle is inserted into the first slot, and the upper end of the handle is connected to a manual operating mechanism.

4. A novel contactor according to claim 3, characterized in that: The upper part of the right housing is provided with a second sliding groove, and the second sliding groove is through a first through hole. The manual operation mechanism includes a paddle that is slidably disposed in the second sliding groove. The upper end of the paddle is provided with a button that extends out of the upper end of the right housing, and the lower end is provided with a second slot for inserting the upper end of the handle. The paddles on the front and rear sides of the button are provided with indicator marks. The indicator marks can be exposed through the first through hole or hidden in the second sliding groove as the paddle moves.

5. A novel contactor according to claim 3, characterized in that: The upper part of the right housing is provided with a third sliding groove, and the lower end of the third sliding groove is provided with a second through hole for the handle to pass through and swing. The manual operation mechanism includes a lever block that is slidably disposed in the third sliding groove. The lower end of the lever block is provided with a third slot for the upper end of the handle to be inserted. The third sliding grooves on both the front and rear sides of the lever block are provided with buttons that can pass through the upper end of the right housing. The upper end of the buttons is provided with an indicator mark. The front and rear ends of the lever block are provided with a first L-shaped plate. The inner side of the upper end of the first L-shaped plate is provided with a transition arc surface, and the outer side of the lower end is provided with a first inclined surface. The upper part of the inner wall of the lever block is provided with a second L-shaped plate, and the lower part is provided with an insert block. The lower end of the second L-shaped plate is provided with a second inclined surface that can abut against the transition arc surface. The insert block is provided with a third inclined surface that can abut against the first inclined surface. The lower end of the button is provided with a spring groove, and the spring groove is provided with a spring that abuts against the third sliding groove.

6. A novel contactor according to claim 4 or 5, characterized in that: The moving contact is located on the upper part of the moving spring assembly. The lower part of the moving spring assembly is fixedly connected to the lower part of the conductive sheet. The lower middle part of the conductive sheet is inclined outward from bottom to top, so that the upper part of the conductive sheet and the moving contact and the moving spring assembly have room to move.

7. A novel contactor according to claim 6, characterized in that: The moving spring assembly includes a moving spring, a middle diverter, and a large diverter that abut against each other from the inside out. The moving spring has a first U-shaped portion, the middle diverter has a second U-shaped portion that covers the first U-shaped portion, and the large diverter has a third U-shaped portion that covers the second U-shaped portion.

8. A novel contactor according to claim 4 or 5, characterized in that: The right housing surrounding the moving contact and the stationary contact is provided with multiple sets of opposing fourth slots, each set of fourth slots is fitted with an arc-extinguishing grid plate, and the arc-extinguishing grid plate is provided with a notch to allow the moving contact to move.

9. A novel contactor according to claim 8, characterized in that: The fourth slot and the number of arc-extinguishing grid plates are 4 pieces. The notches of the first and second arc-extinguishing grid plates face inward or outward, and the notches of the third and fourth arc-extinguishing grid plates face opposite directions to the notches of the first and second arc-extinguishing grid plates.

10. A novel contactor according to claim 1, characterized in that: The upper inner wall of the right housing is provided with multiple locking holes, and the lower part of the right housing is provided with multiple threaded holes. The upper part of the left housing is provided with multiple buckles that can be inserted into the right housing and engaged with the locking holes, and the lower part of the left housing is provided with assembly holes aligned with the threaded holes. Screws are screwed into the assembly holes and screwed into the threaded holes to fix the left and right housings.

Images