Power switch capable of effectively extinguishing arc

Abstract

The utility model discloses a power switch capable of effectively extinguishing an arc, which comprises a base, insulators are symmetrically arranged at the top of the base, a moving contact seat is fixedly arranged at the top end of the insulator at one end, a static contact seat is fixedly arranged at the top end of the insulator at the other end, a connecting seat is fixedly arranged on the moving contact seat, and the static contact seat is fixedly arranged on the connecting seat. A switch blade is rotatably connected in the connecting seat, a butt joint seat is fixedly installed on the static contact seat, a positioning installation mechanism is installed in the static contact seat, and the positioning installation mechanism is connected with an arc extinguishing cover. According to the power switch capable of effectively extinguishing the arc, the knife switch can rotate in the connecting seat on the moving contact seat so as to realize conduction and power-off work, and the arc extinguishing cover is arranged so as to perform arc extinguishing work on the electric arc generated in the separation process of the knife switch and the butt joint seat; and the arc extinguishing chamber can be conveniently disassembled, assembled and replaced through the arrangement of the positioning installation mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of power switches, in particular to a power switch capable of effectively extinguishing arcs. Background Art

[0002] The isolating switch is the most commonly used electrical appliance in high-voltage power switchgear. The isolating switch is a switching device mainly used to isolate power supply, switch operation, and connect and disconnect low-current circuits. However, the existing power switches still have some defects during use;

[0003] For example, an electric switch proposed in application number CN202222120834.9 includes a base, an insulator, a moving contact seat, an isolating knife, a static contact and a moving contact, and an upper side wall of the base is provided with an air blowing mechanism for blowing and cleaning the static contact and the moving contact; the air blowing mechanism includes a mounting plate, and the mounting plate is fixed to the upper side wall of the base through the mounting mechanism, the upper side wall of the mounting plate is fixedly connected with an L-shaped support plate, and the side wall of the support plate is fixedly connected with a working pipe, the top of the working pipe is fixedly connected with an air inlet pipe, and the air inlet pipe is fixedly connected with a first one-way valve, and the side wall of the working pipe is fixedly connected with an air outlet pipe. In actual use, the isolating knife in the electric switch will generate an arc during the separation process from the static contact, and the prior art usually adopts the method of installing an arc extinguishing hood to eliminate the generated arc, but in the process of installing, disassembling and replacing the arc extinguishing hood, there are cumbersome operations and complex structures, thereby reducing the difficulty of disassembling and assembling the arc extinguishing hood.

[0004] Therefore, we propose a power switch that can effectively extinguish arcs in order to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide an electric switch capable of effectively extinguishing arcs, so as to solve the problem in the above-mentioned background technology that it is inconvenient to conveniently disassemble and assemble the arc extinguishing cover.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electric switch capable of effectively extinguishing arcs, comprising a base, with insulators symmetrically mounted on the top of the base, a moving contact seat fixedly mounted on the top of the insulator at one end, and a stationary contact seat fixedly mounted on the top of the insulator at the other end, a connecting seat fixedly mounted on the moving contact seat, a switch knife being rotatably connected inside the connecting seat, a docking seat fixedly mounted on the stationary contact seat, and also comprising a positioning seat fixedly mounted on both sides of the stationary contact seat, a positioning mounting mechanism being mounted inside the stationary contact seat, and the positioning mounting mechanism being connected to the arc extinguishing cover.

[0007] Preferably, the positioning and mounting mechanism includes a limiting groove symmetrically opened inside the positioning seat, the limiting groove is slidably connected with a locking rod inside, a first spring is sleeved on the locking rod, a retaining ring is fixedly installed on the locking rod, the two ends of the first spring are respectively fixedly connected to the retaining ring and the positioning seat, and the bottom of both sides of the arc extinguishing cover are symmetrically provided with locking grooves.

[0008] Preferably, the engaging rod and the retaining ring form a telescopic structure with the positioning seat through a first spring, and the front end of the engaging rod is engaged and connected with the engaging groove.

[0009] The above-mentioned structural design makes it easy to control the engagement and separation between the engagement rod and the engagement groove by pulling the engagement rod and resetting the engagement rod by the first spring, which is beneficial to the positioning connection and separation and disassembly between the docking seat and the arc extinguishing cover during the engagement and separation process, thereby improving the convenience of disassembly and assembly of the arc extinguishing cover.

[0010] Preferably, the positioning and mounting mechanism includes a threaded rod rotatably connected to the outside of the positioning seat, a movable seat is sleeved on the threaded rod, connecting rods are fixedly connected on both sides of the movable seat, and the connecting rods are slidably connected to the positioning seat, a clamping seat is fixedly installed on one end of the connecting rod, and docking grooves and clamping grooves are symmetrically opened on the bottom of both sides of the arc extinguishing cover.

[0011] Preferably, the threaded rod, the movable seat, the connecting rod and the clamping seat form a threaded telescopic structure, and the size of the docking groove matches the size of the connecting rod, and the clamping seat is engaged and connected with the clamping groove.

[0012] The above-mentioned structural design makes it easy to drive the movable seat to move by rotating the threaded rod forward and backward, and then use the connecting rod to control the engagement and separation between the clamping seat and the clamping slot, which is conducive to the positioning, installation and disassembly between the arc extinguishing cover and the positioning seat, and improves the convenience of disassembly and assembly of the arc extinguishing cover and the installation stability.

[0013] Preferably, the positioning and mounting mechanism includes a rotating column rotatably mounted inside the positioning seat, an inner groove is opened inside the rotating column, a sliding seat is slidably connected inside the inner groove, a second spring is fixedly connected between the sliding seat and the inner groove, a fixing groove and a loose groove are vertically opened on the outer side of the positioning seat, both of which can be engaged with the sliding seat, a clamping column is fixedly mounted on one end of the rotating column, and fitting grooves are opened on the bottom of both sides of the arc extinguishing cover.

[0014] Preferably, the slide seat forms a telescopic structure with the inner groove through the second spring, and the inner groove is arranged in a rectangular structure, and the clamping column and the fitting groove form a rotational clamping structure.

[0015] The above-mentioned structural design makes it easy to realize the positioning, installation and disassembly of the arc extinguishing cover and the positioning seat by rotating the rotating column to control the engagement and separation between the clamping column and the fitting groove, and the engaging connection between the sliding seat and the fixed groove or the loose groove can position the engagement and separation state between the clamping column and the fitting groove, thereby improving the convenience of disassembly and assembly of the arc extinguishing cover and the simplicity of the structure.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the electric switch capable of effectively extinguishing arcs, the knife can rotate in the connecting seat on the moving contact seat, so that the knife can be connected and separated from the docking seat on the static contact seat during the rotation process, thereby realizing the conduction and power-off work, and the setting of the arc extinguishing cover can extinguish the arc generated during the separation of the knife and the docking seat, and the setting of the positioning and mounting mechanism can facilitate the convenient disassembly, assembly and replacement of the arc extinguishing cover, as shown in the following content:

[0017] 1. By pulling the engaging rod and resetting the first spring, it is possible to control the engagement and separation between the engaging rod and the engaging groove, which is conducive to the stable installation between the arc extinguishing cover and the positioning seat when engaging, and is also conducive to the removal and replacement of the arc extinguishing cover that has been worn out when separating, thereby improving the convenience of replacing the arc extinguishing cover in the power switch that can effectively extinguish arcs;

[0018] 2. The forward and reverse rotation of the threaded rod can drive the movable seat, the connecting rod and then the clamping seat to move, so as to control the engagement and separation between the clamping seat and the clamping slot, which is beneficial to the fixed connection and separation between the arc extinguishing cover and the positioning seat, thereby improving the convenience of disassembly, assembly and replacement of the arc extinguishing cover in the power switch that can effectively extinguish arcs;

[0019] 3. The elastic structure formed between the second spring, the slide seat and the inner groove can control the slide seat to be engaged with the fixed groove or the loose groove, which is conducive to the engagement of the clamping column at the front end of the rotating column with the fitting groove when the fixed groove is engaged, so as to realize the positioning and installation of the arc extinguishing cover;

[0020] When the sliding seat is engaged with the loose groove, the engagement between the clamping column and the fitting groove can be released, so that the arc extinguishing cover can be disassembled and replaced after being worn, further improving the structural simplicity and operational convenience of replacing the arc extinguishing cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a side structural schematic diagram of an embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the positioning and installation mechanism in the first embodiment of the utility model;

[0023] Figure 3This is a side view of the structure of the second embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the positioning and installation mechanism in the second embodiment of the utility model;

[0025] Figure 5 This is a side view of the structure of Embodiment 3 of the present utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the positioning and installation mechanism in the third embodiment of the present utility model.

[0027] In the figure: 1. base; 2. insulator; 3. moving contact seat; 4. static contact seat; 5. connecting seat; 6. knife switch; 7. docking seat; 8. positioning seat; 9. limiting groove; 10. locking rod; 11. first spring; 12. retaining ring; 13. locking groove; 14. threaded rod; 15. movable seat; 16. connecting rod; 17. clamping seat; 18. docking groove; 19. clamping groove; 20. rotating column; 21. inner groove; 22. sliding seat; 23. second spring; 24. fixing groove; 25. relaxation groove; 26. clamping column; 27. fitting groove; 28. arc extinguishing cover. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1 - Figure 6 , the present invention provides the following technical solutions:

[0030] Embodiment 1: In order to solve the problem of cumbersome installation and disassembly and replacement of the arc extinguishing cover 28 in the prior art, the following solution is disclosed. For details, please refer to Figure 1-2, including a base 1, on the top of which an insulator 2 is symmetrically installed, a moving contact seat 3 is fixedly installed on the top of the insulator 2 at one end, and a static contact seat 4 is fixedly installed on the top of the insulator 2 at the other end, a connecting seat 5 is fixedly installed on the moving contact seat 3, a knife 6 is rotatably connected inside the connecting seat 5, and a docking seat 7 is fixedly installed on the static contact seat 4, characterized in that: it also includes a positioning seat 8, which is fixedly installed on both sides of the static contact seat 4, a positioning and mounting mechanism is installed inside the static contact seat 4, the positioning and mounting mechanism is connected to the arc extinguishing cover 28, the positioning and mounting mechanism includes a limiting groove 9 symmetrically opened inside the positioning seat 8, a clamping rod 10 is slidably connected inside the limiting groove 9, a first spring 11 is sleeved on the clamping rod 10, a retaining ring 12 is fixedly installed on the clamping rod 10, and the first spring 11 The two ends are fixedly connected to the retaining ring 12 and the positioning seat 8 respectively. The locking rod 10 and the retaining ring 12 form a telescopic structure with the positioning seat 8 through the first spring 11. The bottom of the two sides of the arc extinguishing cover 28 is symmetrically provided with locking grooves 13, and the front end of the locking rod 10 is locked and connected with the locking groove 13. By pulling the locking rod 10, the front end can be driven to separate from the locking groove 13, thereby releasing the restriction on the arc extinguishing cover 28 to achieve its disassembly and replacement. During installation, the first spring 11 can cooperate with the retaining ring 12 to push the locking rod 10 to reset, so that the locking rod 10 can be locked with the locking groove 13 to achieve the positioning connection between the arc extinguishing cover 28 and the positioning seat 8, wherein the setting of the limit groove 9 can limit the extension and retraction of the locking rod 10 to prevent deviation in the engagement between it and the locking groove 13.

[0031] Embodiment 2: In this embodiment, another positioning and installation method is disclosed, which is different from the embodiment 1 and can prevent the first spring 11 from fatigue and affect the installation stability of the arc extinguishing cover 28. Figure 3-4 As shown, the positioning installation mechanism includes a threaded rod 14 rotatably connected to the outer side of the positioning seat 8, a movable seat 15 is sleeved on the threaded rod 14, connecting rods 16 are fixedly connected to both sides of the movable seat 15, and the connecting rod 16 is slidably connected to the positioning seat 8, and a clamping seat 17 is fixedly installed on one end of the connecting rod 16, and the threaded rod 14 and the movable seat 15, the connecting rod 16 and the clamping seat 17 form a threaded telescopic structure, and the bottom of both sides of the arc extinguishing cover 28 are symmetrically provided with docking grooves 18 and clamping grooves 19, and the size of the docking grooves 18 is consistent with the size of the connecting rod 16, and the clamping seat 17 It is engaged and connected with the slot 19, and the movable seat 15 can be driven to perform threaded extension and retraction by the forward and reverse rotation of the threaded rod 14, which can then drive the connecting rod 16 and the slot 17 to be extended and retracted, and control the engagement between the slot 19 and the slot 19, so that when engaged, the arc extinguishing hood 28 can be docked with the connecting rod 16 through the docking slot 18, and the slot 19 can position and install the arc extinguishing hood 28 with the slot 19, and when separated, the arc extinguishing hood 28 can be separated from the connecting rod 16 through the docking slot 18 to realize the disassembly and replacement of the arc extinguishing hood 28.

[0032] Embodiment 3: In this embodiment, another positioning and installation method is disclosed, which is different from Embodiment 1 and Embodiment 2, and can improve the convenience of disassembly and assembly of the arc extinguishing cover 28 and the simplicity of structure. Figure 5-6 As shown, the positioning installation mechanism includes a rotating column 20 rotatably installed inside the positioning seat 8, an inner groove 21 is opened inside the rotating column 20, and the inner groove 21 is arranged in a rectangular structure, a slide seat 22 is slidably connected inside the inner groove 21, a second spring 23 is fixedly connected between the slide seat 22 and the inner groove 21, and the slide seat 22 forms a telescopic structure with the inner groove 21 through the second spring 23, a fixed groove 24 and a loose groove 25 are vertically opened on the outer side of the positioning seat 8, and the fixed groove 24 and the loose groove 25 can be connected with the slide seat 22 by snapping, a clamping column 26 is fixedly installed at one end of the rotating column 20, and fitting grooves 28 are opened at the bottom of both sides of the arc extinguishing cover 28. 7. The clamping column 26 and the fitting groove 27 form a rotating clamping structure, so that by pulling the slide 22 and resetting the slide 22 by the second spring 23, the slide 22 can be extended and retracted inside the rotating column 20 through the inner groove 21, so that the slide 22 can be controlled to be clamped with the fixed groove 24 or the relaxation groove 25. When clamped with the relaxation groove 25, the clamping column 26 and the fitting groove 27 are in clamping contact, so that the arc extinguishing cover 28 can be disassembled, replaced and docked before installation. When clamped with the fixed groove 24, the clamping column 26 can be clamped with the fitting groove 27, so as to realize the positioning and installation of the arc extinguishing cover 28.

[0033] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electric switch capable of effectively extinguishing an arc, comprising a base (1), on the top of which an insulator (2) is symmetrically mounted, a moving contact seat (3) being fixedly mounted on the top of the insulator (2) at one end, and a stationary contact seat (4) being fixedly mounted on the top of the insulator (2) at the other end, a connecting seat (5) being fixedly mounted on the moving contact seat (3), a knife switch (6) being rotatably connected inside the connecting seat (5), and a docking seat (7) being fixedly mounted on the stationary contact seat (4), characterized in that: It also includes a positioning seat (8) which is fixedly mounted on both sides of the stationary contact seat (4); a positioning mounting mechanism is mounted inside the stationary contact seat (4); and the positioning mounting mechanism is interconnected with the arc extinguishing cover (28).

2. The power switch capable of effectively extinguishing arc according to claim 1, characterized in that: The positioning installation mechanism comprises a limiting groove (9) symmetrically arranged inside the positioning seat (8), a locking rod (10) is slidably connected inside the limiting groove (9), a first spring (11) is sleeved on the locking rod (10), a retaining ring (12) is fixedly installed on the locking rod (10), two ends of the first spring (11) are respectively fixedly connected to the retaining ring (12) and the positioning seat (8), and locking grooves (13) are symmetrically arranged on the bottom of two sides of the arc extinguishing cover (28).

3. The power switch capable of effectively extinguishing arc according to claim 2, characterized in that: The engaging rod (10) and the retaining ring (12) form a telescopic structure with the positioning seat (8) via a first spring (11), and the front end of the engaging rod (10) is engaged and connected with the engaging groove (13).

4. The power switch capable of effectively extinguishing arc according to claim 1, characterized in that: The positioning installation mechanism comprises a threaded rod (14) rotatably connected to the outside of the positioning seat (8), a movable seat (15) is sleeved on the threaded rod (14), connecting rods (16) are fixedly connected to both sides of the movable seat (15), and the connecting rods (16) are slidably connected to the positioning seat (8), a clamping seat (17) is fixedly installed on one end of the connecting rod (16), and docking grooves (18) and clamping grooves (19) are symmetrically provided at the bottom of both sides of the arc extinguishing cover (28).

5. The electric switch capable of effectively extinguishing arc according to claim 4, characterized in that: The threaded rod (14) and the movable seat (15), the connecting rod (16) and the clamping seat (17) form a threaded telescopic structure, and the size of the docking groove (18) matches the size of the connecting rod (16), and the clamping seat (17) is clamped and connected with the clamping groove (19).

6. The power switch capable of effectively extinguishing arc according to claim 1, characterized in that: The positioning installation mechanism comprises a rotating column (20) rotatably installed inside the positioning seat (8), an inner groove (21) is provided inside the rotating column (20), a sliding seat (22) is slidably connected inside the inner groove (21), a second spring (23) is fixedly connected between the sliding seat (22) and the inner groove (21), a fixing groove (24) and a loosening groove (25) are vertically provided on the outer side of the positioning seat (8), both the fixing groove (24) and the loosening groove (25) can be connected to the sliding seat (22), a clamping column (26) is fixedly installed on one end of the rotating column (20), and fitting grooves (27) are provided on the bottom of both sides of the arc extinguishing cover (28).

7. The electric switch capable of effectively extinguishing arc according to claim 6, characterized in that: The sliding seat (22) forms a telescopic structure with the inner groove (21) via the second spring (23), and the inner groove (21) is arranged in a rectangular structure. The clamping column (26) and the fitting groove (27) form a rotational clamping structure.

Images