A high and low voltage switch with leakage self-protection

Abstract

The present invention discloses a leakage self-protection high and low voltage switch, including a docking shaft installed through the upper end of the static contact base member, and the upper end of the static contact base member is docked with a dynamic contact movable member through the docking shaft, and the static contact base member and the dynamic contact movable member are in contact to form a power supply state. For the leakage self-protection high and low voltage switch, when the equipment is in high temperature contact due to short circuit or other reasons, the second magnet member and the third magnet member in the demagnetized state at the corresponding position will move down along the inside of the dynamic contact movable member, and apply pressure to the contacting docking movable block, so that it drives the two third steel wire ropes on the outside to be pulled synchronously, so that the abutting docking member at the end of the docking moves inward to the mutually fitting fitting connecting member to apply pressure, so that the sand storage cavity at the inner end is in a connected state, and then sand is put into the position of the static contact base member, and the contacted open fire is promptly extinguished, and the contacted leakage condition is promptly and quickly self-protected.

Description

Technical Field

[0001] The invention relates to the technical field of high and low voltage switches, in particular to a high and low voltage switch with leakage self-protection. Background Art

[0002] For example, a high and low voltage switch with publication number CN206076085U has a locking plate at the upper end of the static contact; a repelling device is installed on one side of the base; it can effectively prevent small animals from touching and causing malfunctions when used outdoors, and can prevent rust during long-term outdoor use, thereby increasing the service life of the device;

[0003] For example, a high-low voltage isolating switch with publication number CN212725129U, a connection groove is fixedly provided on the upper portion of the second wiring board, a static contact block is provided in the inner cavity of the connection groove, the bottom of the static contact block is connected to the bottom of the inner cavity of the connection groove by a spring, a limiting protrusion is fixedly provided on the inner wall of the side plate of the connection groove, and limiting grooves are provided on both sides of the static contact block at positions corresponding to the limiting protrusions, so that the static contact block of the switch is always in contact with the moving contact block, so that the conductive performance is good, the stability of its connection is increased, and it is more reliable when in use;

[0004] The above-mentioned high and low voltage switches can improve their conductivity and service life in the docking working state, but in extreme situations, such as when the voltage is unstable or the negative pressure is too large, high voltage phenomena such as open flames or short circuits are very likely to occur. They cannot promptly perform rapid self-protection processing on the contact leakage condition, which will affect the subsequent use of the equipment, and even cause fire, which leads to certain limitations in use. Summary of the invention

[0005] The purpose of the present invention is to provide a high and low voltage switch with leakage self-protection to solve the problem proposed in the above background technology that when the voltage is unstable or the negative pressure intensity is too large, high voltage phenomena such as open flames or short circuits are very likely to occur, and it is impossible to quickly self-protect the contact leakage condition in time, which will affect the subsequent use of the equipment and even cause the undesirable phenomenon of fire.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a high and low voltage switch with leakage self-protection, comprising a stationary contact base, a docking shaft and a dynamic contact movable part, wherein the upper end of the stationary contact base is penetrated by a docking shaft, and the upper end of the stationary contact base is docked with the dynamic contact movable part through the docking shaft, and a power supply state is formed when the stationary contact base and the dynamic contact movable part are in contact;

[0007] The upper end of the static contact base member is nested with a support connecting member, and the lower end of the support connecting member is fixedly connected to a return spring, the outer side of the support connecting member is butted against a first steel wire rope, and the first steel wire rope extends along the interior of the static contact base member, the upper end of the static contact base member is butted against a movable support member, and the end of the movable support member penetrates and is butted against a first torsion spring shaft, and the shaft end of the movable support member and the end of the first steel wire rope are butted against each other, the outer end of the movable support member is penetrated and installed with a second torsion spring shaft, and the movable support member is butted against the movable connecting member through the second torsion spring shaft, and the upper end of the movable connecting member is fixedly connected to the first magnet member, the shaft end of the second torsion spring shaft is butted against a second steel wire rope, and the second steel wire rope extends along the interior of the movable support member;

[0008] The upper end of the movable support member is bonded to a heated airbag assembly, and the upper end of the heated airbag assembly is fixedly connected to a heat conducting member, and the heat conducting member is in contact with the lower end of the movable member;

[0009] The inner end of the dynamic touch movable part is fixedly connected with the second magnet part, and the outer side of the second magnet part is adsorbed with the third magnet part, and the third magnet part is arranged on the inner side of the dynamic touch movable part, the inner side of the dynamic touch movable part is nested with a docking movable block, and the outer side of the docking movable block is docked with a third steel wire rope, and the third steel wire rope extends along the inner side of the dynamic touch movable part, and a sand storage cavity is opened on the inner side of the dynamic touch movable part.

[0010] Furthermore, when the dynamic contact movable part is closed along the upper end of the static contact base part, the supporting connecting part in contact with the bottom moves downward along the inner side of the static contact base part, and in the process of the supporting connecting part moving downward, the first steel wire rope connected to the outside drives the movable supporting part to flip upward along the outside of the static contact base part, and the return spring at the lower end of the supporting connecting part is compressed during the pressure process to move downward synchronously.

[0011] Furthermore, the movable connecting member cooperates with the second torsion spring shaft and the movable supporting member to form a rotating structure, and the movable connecting member is attracted to each other through the first magnet member and the third magnet member.

[0012] Furthermore, the second steel wire rope is provided with a docking gear and a resistance connector, and the end of the second steel wire rope is docked with the docking gear, and the docking gear is rotatably connected to the inner end of the movable support, and a resistance connector is nested and installed on the inner side of the movable support, and the resistance connector and the outer side of the docking gear are docked with each other.

[0013] Furthermore, the lower end of the interference connector is meshed with the docking gear, and the docking gear, through the rotational force of the movable support, cooperates with the second steel wire rope to drive the docking gear to form a transmission structure, so that during the outward rotation of the movable connector, the docking gear can be synchronously driven by the second steel wire rope to rotate the angle, thereby driving the upper end of the meshing interference connector to move outward.

[0014] Furthermore, when the heated airbag assembly is heated, it will quickly supply heat to the movable part through the heat conductor, and the heated airbag assembly in the expanded state will deform to push the movable connecting part to rotate outward along the outer side of the movable support part. The heated airbag assembly is made of a fire-retardant coating material, and during the heating process it will expand and push the movable connecting part on the outside to rotate outward.

[0015] Furthermore, the third magnet component is attracted to the two second magnet components on the outside. When they come into contact with high temperature due to short circuit or other reasons, the demagnetized third magnet component will move downward along the inside of the moving part, exerting pressure on the contacting docking movable block, so that it drives the two third steel wire ropes on the outside to be pulled synchronously.

[0016] Furthermore, the third steel wire rope is provided with a butt-jointed piece and a fitting piece, and the end of the third steel wire rope is butt-jointed with the butt-jointed piece, and the butt-jointed piece is butt-jointed with the inner side of the dynamic movable piece, and the inner side of the dynamic movable piece is adhesively connected with the fitting piece.

[0017] Furthermore, the positions of the abutting docking piece and the fitting connector correspond to each other, and the abutting docking piece forms a traction structure with the docking movable block through a third steel wire rope, and the fitting connector is provided with three equal angles about the center point of the abutting docking piece, and the fitting connector is made of silicone material and fits each other, so that when the abutting docking piece is forced to move inward, pressure can be applied to the contacting silicone fitting connector, so that it is forced to expand to form a supply state.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The leakage self-protection high and low voltage switch is provided with a self-power-off structure. When the voltage is unstable or the negative pressure is too strong, or when there is a high voltage phenomenon such as an open flame or a short circuit, the fireproof heat airbag assembly heated at the corresponding position will expand and push the outer movable connecting piece to flip, thereby breaking away from the positioning state between the movable contact part and the movable contact part. At the same time, the docking gear structure docked with the movable contact part through the second steel wire rope will drive the meshing contact connecting piece to move outward, thereby cooperating with the supporting connecting piece to push the movable contact part in contact at the upper end upward to quickly break away from the positioning state, thereby improving the safety of the equipment;

[0020] 2. The leakage self-protection high and low voltage switch is provided with a self-protection structure. When the equipment is in high temperature contact due to short circuit or other reasons, the second and third magnets in the corresponding positions in the demagnetized state will move down along the inside of the moving part, and apply pressure to the contacting docking movable block, so that it drives the two third steel wire ropes on the outside to be pulled synchronously, so that the abutting docking parts at the ends of the docking parts move inward to the mutually fitting fitting parts to apply pressure, so that the sand storage cavity at the inner end is in a connected state, and then sand is put into the position of the static contact base part, so that the open fire in contact is extinguished in time, and the leakage condition in contact is quickly self-protected in time to avoid affecting the subsequent use of the equipment;

[0021] 3. The leakage self-protection high and low voltage switch is provided with a self-positioning structure. As the static contact base and the dynamic contact movable part contact and close, the support connecting part under pressure at the corresponding position will move downward, and then the movable support part and the movable connecting part will be stably driven to flip upward by the first steel wire rope on the outside, so as to cooperate with the two groups of magnets with opposite poles to allow the movable connecting part and the outer side of the dynamic contact movable part to self-position, avoiding the undesirable phenomenon of loose position during the pressure process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the dynamic touch movable part of the present invention;

[0024] Figure 3 It is a schematic diagram of the front cross-sectional structure of the present invention;

[0025] Figure 4 It is a front cross-sectional structural schematic diagram of the support connecting member of the present invention;

[0026] Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0027] Figure 6 It is a front cross-sectional structural schematic diagram of the movable connecting member of the present invention;

[0028] Figure 7 It is a schematic diagram of a front cross-sectional structure of a third steel wire rope of the present invention;

[0029] Figure 8 It is a bottom view of the structure of the interfering docking piece of the present invention.

[0030] In the figure: 1. static contact base member; 2. docking shaft; 3. dynamic contact movable member; 4. supporting connecting member; 5. reset spring; 6. first steel wire rope; 7. movable supporting member; 8. first torsion spring shaft; 9. movable connecting member; 10. second torsion spring shaft; 11. second steel wire rope; 1101. docking gear; 1102. abutting connecting member; 12. heated airbag assembly; 13. heat conducting member; 14. first magnet member; 15. second magnet member; 16. third magnet member; 17. docking movable block; 18. third steel wire rope; 1801. abutting docking member; 1802. fitting connecting member; 19. sand storage cavity. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-8 The present invention provides a technical solution: a high and low voltage switch with leakage self-protection, including a static contact base member 1, a docking shaft 2, a dynamic contact movable member 3, a supporting connector 4, a reset spring 5, a first steel wire rope 6, a movable supporting member 7, a first torsion spring shaft 8, a movable connector 9, a second torsion spring shaft 10, a second steel wire rope 11, a docking gear 1101, a contact connector 1102, a heated airbag assembly 12, a heat conducting member 13, a first magnet member 14, a second magnet member 15, a third magnet member 16, a docking movable block 17, a third steel wire rope 18, a contact docking member 1801, a fitting connector 1802, and a sand storage cavity 19.

[0033] In this embodiment:

[0034] A stationary contact base member 1, a docking shaft 2 and a dynamic contact movable member 3, wherein the upper end of the stationary contact base member 1 is penetrated by the docking shaft 2, and the upper end of the stationary contact base member 1 is docked with the dynamic contact movable member 3 through the docking shaft 2, and a power supply state is formed when the stationary contact base member 1 and the dynamic contact movable member 3 are in contact;

[0035] A support connector 4 is nested and installed at the upper end of the static contact base member 1, and a return spring 5 is fixedly connected to the lower end of the support connector 4, a first steel wire rope 6 is docked on the outer side of the support connector 4, and the first steel wire rope 6 extends along the inside of the static contact base member 1, a movable support member 7 is docked on the upper end of the static contact base member 1, and a first torsion spring shaft 8 is penetrated and docked at the end of the movable support member 7, and the shaft end of the movable support member 7 and the end of the first steel wire rope 6 are docked with each other, a second torsion spring shaft 10 is penetrated and installed at the outer end of the movable support member 7, and the movable support member 7 is docked with a movable connector 9 through the second torsion spring shaft 10, and a first magnet member 14 is fixedly connected to the upper end of the movable connector 9, a second steel wire rope 11 is docked at the shaft end of the second torsion spring shaft 10, and the second steel wire rope 11 extends along the inside of the movable support member 7;

[0036] The upper end of the movable support member 7 is bonded to a heated airbag assembly 12, and the upper end of the heated airbag assembly 12 is fixedly connected to a heat conducting member 13, and the heat conducting member 13 is in contact with the lower end of the movable member 3;

[0037] The inner end of the dynamic touch movable part 3 is fixedly connected with the second magnet part 15, and the outer side of the second magnet part 15 is adsorbed with the third magnet part 16, and the third magnet part 16 is arranged on the inner side of the dynamic touch movable part 3, and the inner side of the dynamic touch movable part 3 is nested with a docking movable block 17, and the outer side of the docking movable block 17 is docked with a third steel wire rope 18, and the third steel wire rope 18 extends along the inner side of the dynamic touch movable part 3, and a sand storage cavity 19 is opened on the inner side of the dynamic touch movable part 3.

[0038] When the dynamic contact movable part 3 is closed along the upper end of the static contact base part 1, the supporting connecting part 4 in contact with the bottom moves downward along the inner side of the static contact base part 1, and during the downward movement of the supporting connecting part 4, the first steel wire rope 6 connected to the outside drives the movable supporting part 7 to flip upward along the outer side of the static contact base part 1. The movable connecting part 9 cooperates with the second torsion spring shaft 10 to form a rotating structure with the movable supporting part 7, and the movable connecting part 9 is attracted to each other through the first magnet part 14 and the third magnet part 16. The second steel wire rope 11 is provided with a docking gear 1101 and a resisting connecting part 1102, and the end of the second steel wire rope 11 is connected with the docking gear 1101, and the docking gear 1101 is rotatably connected to the inner end of the movable supporting part 7, and the resisting connecting part 1102 is nested and installed on the inner side of the movable supporting part 7, and the resisting connecting part 1102 and the outer side of the docking gear 1101 are connected to each other. The lower end of the abutting connector 1102 meshes with the docking gear 1101 , and the docking gear 1101 is driven by the rotational force of the movable support 7 and the second steel wire rope 11 to form a transmission structure.

[0039] As the static contact base member 1 and the dynamic contact movable member 3 are in contact and closed, the support connecting member 4 under pressure at the corresponding position will move downward, and then the movable support member 7 and the movable connecting member 9 will be stably driven to flip upward through the first steel wire rope 6 on the outside, so as to cooperate with the first magnet member 14 on the outside of the movable connecting member 9 with different magnetic poles and the second magnet member 15 on the inside of the dynamic contact movable member 3, so that the movable connecting member 9 and the outer side of the dynamic contact movable member 3 are self-positioned, avoiding the undesirable phenomenon of loose position during the pressure process;

[0040] When the voltage is unstable or the negative pressure is too strong, or when there is a high voltage phenomenon such as an open flame or a short circuit, the fireproof heat airbag assembly 12 heated at the corresponding position will expand and push the outer movable connecting member 9 to flip, thereby leaving the positioning state with the dynamic touch movable member 3. At the same time, the docking gear 1101 structure docked with it through the second steel wire rope 11 will drive the meshing abutting connecting member 1102 to move outward, thereby cooperating with the supporting connecting member 4 to push the upper end contacting dynamic touch movable member 3 upward to quickly leave the positioning state, thereby improving the safety of the equipment;

[0041] When heated, the heated airbag assembly 12 will quickly supply heat to the dynamic touch movable part 3 through the heat conducting part 13, and the heated airbag assembly 12 in the expanded state will deform and push the movable connecting part 9 to rotate outward along the outer side of the movable support part 7. The third magnet part 16 and the two second magnet parts 15 on the outer side are mutually attracted. When they are in high temperature contact due to short circuit or other reasons, the third magnet part 16 in the demagnetized state will move down along the inside of the dynamic touch movable part 3, and put pressure on the contacting docking movable block 17, so that it drives the two third steel wire ropes 18 on the outer side to be pulled and stressed synchronously. The third steel wire rope 18 is provided with a resisting docking part 1801 and a fitting connecting part 1802, and the end of the third steel wire rope 18 is docked with the resisting docking part 1801, and the resisting docking part 1801 and the inner side of the dynamic touch movable part 3 are mutually docked, and the inner side of the dynamic touch movable part 3 is bonded with the fitting connecting part 1802. The positions of the abutting docking member 1801 and the fitting connector 1802 correspond to each other, and the abutting docking member 1801 forms a traction structure with the docking movable block 17 through the third steel wire rope 18, and there are three fitting connectors 1802 arranged at equal angles about the center point of the abutting docking member 1801, and the fitting connectors 1802 are made of silicone and fit each other.

[0042] When the equipment is in high-temperature contact due to short circuit or other reasons, the second magnet component 15 and the third magnet component 16 in the corresponding position which are in a demagnetized state will move downward along the inside of the dynamic contact movable component 3, and apply pressure to the contact docking movable block 17, so that it drives the two third steel wire ropes 18 on the outside to be pulled synchronously, so that the abutting docking component 1801 at its end is moved inward to the mutually fitting connecting component 1802 to apply pressure, so that the sand storage cavity 19 at its inner end is in a connected state, and then sand is thrown into the position of the static contact base component 1, so that the open flame in contact is extinguished in time, and the leakage condition in contact is quickly self-protected in time to avoid affecting the subsequent use of the equipment.

[0043] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leakage self-protection high and low voltage switch, comprising a stationary contact base member (1), a docking shaft (2) and a dynamic contact movable member (3), wherein the upper end of the stationary contact base member (1) is penetrated by the docking shaft (2), and the upper end of the stationary contact base member (1) is docked with the dynamic contact movable member (3) through the docking shaft (2), and when the stationary contact base member (1) and the dynamic contact movable member (3) are in contact, a power supply state is formed; Features: The upper end of the stationary contact base member (1) is nested with a support connecting member (4), and the lower end of the support connecting member (4) is fixedly connected with a return spring (5), the outer side of the support connecting member (4) is butt-jointed with a first steel wire rope (6), and the first steel wire rope (6) extends along the interior of the stationary contact base member (1), the upper end of the stationary contact base member (1) is butt-jointed with a movable support member (7), and the end of the movable support member (7) is penetrated and butt-jointed with a first torsion spring shaft (8), and the movable support member (7) ) is butted against the end of the first steel wire rope (6), the outer end of the movable support member (7) is penetrated by a second torsion spring shaft (10), and the movable support member (7) is butted against a movable connecting member (9) through the second torsion spring shaft (10), and the upper end of the movable connecting member (9) is fixedly connected to a first magnet member (14), the axial end of the second torsion spring shaft (10) is butted against a second steel wire rope (11), and the second steel wire rope (11) extends along the interior of the movable support member (7); The upper end of the movable support member (7) is bonded to a heated airbag assembly (12), and the upper end of the heated airbag assembly (12) is fixedly connected to a heat conducting member (13), and the heat conducting member (13) and the lower end of the movable member (3) are in contact with each other; The inner end of the dynamic touch movable part (3) is fixedly connected to a second magnet part (15), and the outer side of the second magnet part (15) is attracted by a third magnet part (16), and the third magnet part (16) is arranged on the inner side of the dynamic touch movable part (3). A docking movable block (17) is nested and installed on the inner side of the dynamic touch movable part (3), and the outer side of the docking movable block (17) is docked with a third steel wire rope (18), and the third steel wire rope (18) extends along the inner side of the dynamic touch movable part (3), and a sand storage cavity (19) is opened on the inner side of the dynamic touch movable part (3).

2. A leakage self-protection high and low voltage switch according to claim 1, characterized in that: When the dynamic contact movable part (3) is closed along the upper end of the static contact base part (1), the supporting connecting part (4) in contact with the bottom moves downward along the inner side of the static contact base part (1), and during the downward movement of the supporting connecting part (4), the first steel wire rope (6) connected to the outside drives the movable supporting part (7) to flip upward along the outside of the static contact base part (1).

3. A leakage self-protection high and low voltage switch according to claim 2, characterized in that: The movable connecting member (9) cooperates with the second torsion spring shaft (10) and the movable supporting member (7) to form a rotating structure, and the movable connecting member (9) is attracted to each other through the first magnet member (14) and the third magnet member (16).

4. A leakage self-protection high and low voltage switch according to claim 1, characterized in that: The second steel wire rope (11) is provided with a docking gear (1101) and a resistance connecting piece (1102), and the end of the second steel wire rope (11) is docked with the docking gear (1101), and the docking gear (1101) is rotatably connected to the inner end of the movable support (7), and the resistance connecting piece (1102) is nested and installed on the inner side of the movable support (7), and the resistance connecting piece (1102) and the outer side of the docking gear (1101) are docked with each other.

5. A leakage self-protection high and low voltage switch according to claim 4, characterized in that: The lower end of the abutting connecting member (1102) is meshed with the docking gear (1101), and the docking gear (1101) is driven by the rotational force of the movable support member (7) in cooperation with the second steel wire rope (11) to form a transmission structure.

6. A leakage self-protection high and low voltage switch according to claim 1, characterized in that: When the heated airbag assembly (12) is heated, it will quickly supply heat to the movable part (3) through the heat conducting part (13), and the heated airbag assembly (12) in the expanded state will deform to push the movable connecting part (9) to rotate outward along the outer side of the movable supporting part (7).

7. The high and low voltage switch with leakage self-protection according to claim 1, characterized in that: The third magnet member (16) is attracted to the two second magnet members (15) on the outside. When they come into contact with high temperature due to a short circuit or the like, the third magnet member (16) in a demagnetized state will move downward along the inside of the moving contact member (3) and exert pressure on the contacting docking movable block (17), thereby driving the two third steel wire ropes (18) on the outside to be pulled synchronously.

8. The high and low voltage switch with leakage self-protection according to claim 1, characterized in that: The third steel wire rope (18) is provided with a contact docking piece (1801) and a fitting connecting piece (1802), and the end of the third steel wire rope (18) is docked with the contact docking piece (1801), and the contact docking piece (1801) and the inner side of the dynamic touch movable piece (3) are docked with each other, and the inner side of the dynamic touch movable piece (3) is adhesively connected with the fitting connecting piece (1802).

9. A leakage self-protection high and low voltage switch according to claim 8, characterized in that: The positions of the abutting docking member (1801) and the fitting connecting member (1802) correspond to each other, and the abutting docking member (1801) forms a traction structure with the docking movable block (17) through the third steel wire rope (18), and three fitting connecting members (1802) are arranged at equal angles with respect to the center point of the abutting docking member (1801), and the fitting connecting members (1802) are made of silicone and fit each other.

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