CN211045299U - Switch with arc extinguishing function - Google Patents

Abstract

The utility model discloses a switch with arc extinguishing function, which comprises a base and an upper cover, wherein the base is fixedly connected with the upper cover in a detachable way, the base is of a box structure, the left end of the base is provided with a positive wiring hole, and the right side of the base is provided with a negative wiring hole; a switch device for controlling on and off is arranged in the base; a permanent magnet is embedded in the side wall of the base; the permanent magnet is embedded in the side wall of the base at the right end in the current direction, and one end of the permanent magnet close to the switch device is an N pole; an arc extinguishing device is arranged at the lower end of the upper cover; the device makes the electric arc generate electrodynamic force through the magnet, and makes the direction of the electric arc face the arc extinguishing device, so that the electric arc can enter the arc extinguishing device quickly.

Description

Switch with arc extinguishing function

Technical Field

The utility model relates to a switchgear technical field, concretely relates to take switch of arc extinguishing function.

Background

In the existing switching electric appliance, an arc extinguishing chamber is often used for extinguishing electric arcs, and the arc extinguishing capability of the arc extinguishing chamber directly influences the breaking capability of the switching electric appliance, so that the safety of electricity utilization of the switching electric appliance is determined; a switch is an electronic component that can open a circuit, interrupt current, or cause current to flow to other circuits. The most common switches are electromechanical devices operated by a person, in which there are one or several electrical contacts. The "closed" of a contact means that the electronic contact is conductive, allowing current to flow; an "open" of the switch means that the electrical contact is not conductive, forming an open circuit, and does not allow current to flow; common one-way switch is mostly direct operation handle, accomplishes opening and closing of circuit, nevertheless meets the higher circuit of voltage, will appear electric arc when the broken circuit, and this kind of switch is unfavorable for the operation safety of circuit, is the problem that technical staff in the field urgently needed to solve.

For example, the patent of the Chinese utility model with the application number of '201821176171. X' is a one-way switch with arc extinguishing function; the method comprises the following steps: the top of the bottom plate is respectively fixed with a first wiring terminal and a second wiring terminal through screws, and one ends of the first wiring terminal and the second wiring terminal are respectively connected with a wire; the front end of the second wiring terminal is rotationally connected with one end of the moving contact through a first rotating shaft; the middle part of the moving contact is provided with an opening and closing device; a shell is arranged on the bottom plate, and an arc extinguishing device is arranged at the position of the shell above the moving contact; the opening and closing device includes: the arc extinguishing device comprises a fixed plate and a fixed frame, wherein the fixed plate is provided with the fixed frame, the fixed frame is provided with a second rotating shaft, one end of the second rotating shaft is connected with a handle, the other end of the second rotating shaft is connected with a cam, a push rod is arranged above the cam and movably connected with the fixed plate, one end of the push rod is in contact with the cam, and the other end of the push rod is connected with the middle part of a moving contact; however, the arc extinguishing device is lack of an arc striking device, and the arc cannot enter the arc extinguishing device to extinguish the arc quickly after the arc is generated.

Disclosure of Invention

An object of the utility model is to provide a take switch of arc extinguishing function, this device make electric arc produce the electrodynamic force through magnet, make the direction of electric arc towards arc control device, make electric arc can get into arc control device sooner.

The utility model adopts the technical scheme as follows: a switch with an arc extinguishing function comprises a base and an upper cover, wherein the base and the upper cover are fixedly connected in a detachable mode, the base is of a box structure, a positive wiring hole is formed in the left end of the base, and a negative wiring hole is formed in the right side of the base; a switch device for controlling on and off is arranged in the base; a permanent magnet is embedded in the side wall of the base; the permanent magnet is embedded in the side wall of the base at the right end in the current direction, and one end of the permanent magnet close to the switch device is an N pole; and an arc extinguishing device is arranged at the lower end of the upper cover.

Preferably, an arc striking plate for attracting electric arcs is arranged at the lower end of the arc extinguishing device.

Specifically, the switch device comprises a positive wiring board, a negative wiring board, a first rotating board and a second rotating board which are made of insulating materials; the positive wiring board is arranged on the right side of the base, and the negative wiring board is arranged on the left side of the base; the positive wiring board is of a Z-shaped structure, and the left end of the positive wiring board is provided with an inclined plane which inclines downwards to the right; a Z-shaped wiring channel is arranged in the positive wiring board, a first static terminal is arranged at the left end of the wiring channel in an expanding and contracting mode, a second static terminal is arranged at the right end of the wiring channel in an expanding and contracting mode, an insulating ring is surrounded on the outer side of the second static terminal, a fixing nail for fixing an external lead is arranged at the upper end of the second static terminal, the fixing nail is in threaded fit with the upper end of the second static terminal, and the first static terminal and the second static terminal are electrically connected through leads; the negative wiring board and the positive wiring board are axisymmetric and have the same structure; the first rotating plate and the second rotating plate are parallelogram sections, the first rotating plate and the second rotating plate are provided with rotating plate channels corresponding to the wiring channels, and a first movable contact is arranged in the rotating plate channel of the first rotating plate; a second movable contact is arranged in a rotating plate channel of the second rotating plate, the right end of the first movable contact is contacted with the first fixed terminal of the positive wiring plate, and the left end of the second movable contact is contacted with the first fixed terminal of the negative wiring plate; the left end of the first movable contact is in contact with the right end of the second movable contact; the front side and the rear side of the first rotating plate and the second rotating plate are provided with rotating shafts, and the rotating shafts are rotatably connected with the front side wall and the rear side wall of the base; the front side rotating shaft of the first rotating plate is in keyed connection with a first turbine, and the front side rotating shaft of the second rotating plate is in keyed connection with a second turbine; the outer ends of the first turbine and the second turbine are provided with insulating protective covers, and the insulating protective covers are fixed with the front wall of the base; the upper ends of the first turbine and the second turbine are provided with worms matched with the first turbine and the second turbine, and the worms are rotationally connected to the left side wall and the right side wall of the insulating protective cover; a knob opening is formed in the position, opposite to the worm, of the left end of the base, the left end of the worm is connected with the connecting rod through a coupler, and the left end of the connecting rod penetrates through the outer end of the knob opening to be fixed with the switch knob; the switch knob is made of an insulating material; the permanent magnet is embedded in the rear wall of the base.

As optimization, the outer end of the left side wall of the base is provided with an arc-shaped sliding chute; and a sliding block matched with the arc-shaped sliding groove is arranged on the switch knob.

Specifically, the arc extinguishing device comprises a metal block, and the metal block is fixed with the upper cover through a bolt; the bottom of the metal block is uniformly provided with grooves which are arranged along the front-back direction.

Further, the lower end of the groove is wide, and the upper end of the groove is narrow.

Preferably, the bottom of the groove is provided with an arc isolating net which is woven by a plurality of metal wires.

Specifically, the metal block is made of steel.

The beneficial effects of the utility model reside in that:

1. the device generates electric power through the magnet, and the direction of the electric arc faces to the arc extinguishing device according to the left-hand rule, so that the electric arc can enter the arc extinguishing device quickly.

2. The lower end of the arc extinguishing device is provided with an arc striking plate for attracting electric arcs, so that the electric arcs can enter the arc extinguishing device quickly.

3. The lower end of the groove is wide, and the upper end of the groove is narrow; the mode that the shrink gradually set up can increase electric arc and lean on the pressure of in-process in the transmission, carries out better distortion to electric arc to further improve arc extinguishing performance.

4. The residual electric arc after the arc extinguishing by the arc extinguishing device is conducted to the arc isolating net, and the arc isolating net woven by a plurality of metal wires can increase the passing speed of the electric arc, thereby being beneficial to the dissipation of the electric arc and improving the arc extinguishing performance; through the dual function of arc control device and separate the arc net for this explosion chamber can reach better arc extinguishing effect.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic view of the internal structure of the base.

Fig. 3 is a schematic view of an electromotive force.

Fig. 4 is a schematic rotation diagram of the first rotating plate and the second rotating plate.

Fig. 5 is a schematic view of the structure of the insulating ring.

Fig. 6 is a schematic cross-sectional structure diagram of the positive wiring board and the negative wiring board.

Fig. 7 is a schematic view of the position of the insulating cover.

Fig. 8 is a schematic structural diagram of the switch knob.

Fig. 9 is a first schematic structural diagram of an arc extinguishing device.

Fig. 10 is a second schematic structural diagram of an arc extinguishing device.

Fig. 11 is a schematic position diagram of the arc screen.

In the figure: the arc extinguishing device comprises a base 1, an upper cover 2, a positive pole wiring hole 3, a negative pole wiring hole 4, a permanent magnet 5, an arc extinguishing device 6, an arc striking plate 7, a positive wiring board 8, a negative wiring board 9, a first rotating plate 10, a second rotating plate 11, a wiring channel 12, a first fixed terminal 13, a second fixed terminal 14, an insulating ring 15, a fixing nail 16, a rotating plate channel 17, a first movable contact 18, a second movable contact 19, a rotating shaft 20, a first turbine 21, a second turbine 22, an insulating protective cover 23, a worm 24, a knob opening 25, a connecting rod 26, a switch knob 27, an arc-shaped sliding groove 28, a matching sliding block 29, a metal block 30, a groove 31 and an arc isolating net 32.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings, which are only used for illustrating the technical solutions of the present invention and are not limited.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention; furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated; thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other; the specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

A switch with an arc extinguishing function comprises a base 1 and an upper cover 2, wherein the base 1 and the upper cover 2 are detachably and fixedly connected through bolts; the base 1 is of a box structure, the left end of the base 1 is provided with an anode wiring hole 3, and the right side of the base 1 is provided with a cathode wiring hole 4; a switch device for controlling on and off is arranged in the base 1, and the switch device can be a toggle switch or a knife switch; a permanent magnet 5 is embedded in the side wall of the base 1; the permanent magnet 5 is embedded in the side wall of the base at the right end in the current direction, one end of the permanent magnet 2 close to the switch device is an N pole, for example, the current direction flows from left to right, the permanent magnet 2 is arranged on the front wall of the base, and if the current direction flows from right to left, the permanent magnet 2 is arranged on the rear wall of the base; the lower end of the upper cover 2 is provided with an arc extinguishing device 6; the lower end of the arc extinguishing device 6 is provided with an arc striking plate 7 for attracting electric arcs, so that the electric arcs can quickly enter the arc extinguishing device 6; the switch device comprises a positive wiring board 8, a negative wiring board 9, a first rotating board 10 and a second rotating board 11 which are made of insulating materials; the positive wiring board 8 is arranged on the right side of the base 1, and the negative wiring board 9 is arranged on the left side of the base 1; the positive wiring board 8 is of a Z-shaped structure, and the left end of the positive wiring board 8 is provided with an inclined plane which inclines downwards to the right; a Z-shaped wiring channel 12 is arranged inside the positive wiring board 8, a first fixed terminal 13 is arranged at the left end of the wiring channel 12 in an expanding and contracting mode, a second fixed terminal 14 is arranged at the right end of the wiring channel 12 in an expanding and contracting mode, an insulating ring 15 is surrounded on the outer side of the second fixed terminal 14, a fixing nail 16 for fixing an external lead is arranged at the upper end of the second fixed terminal 14, the fixing nail 16 is in threaded fit with the upper end of the second fixed terminal 14, and the first fixed terminal 13 and the second fixed terminal 14 are electrically connected through leads; the negative wiring board 9 and the positive wiring board 8 are axisymmetrical and have the same structure; the positive electrode of an external power line penetrates through the positive wiring hole 3 and is fixed with a second static terminal 14 at the right end of the positive wiring board 8 through a fixing nail 16; the negative electrode of an external power line penetrates through the negative wiring hole 4 and is fixed with a second static terminal 14 at the right end of the negative wiring board 9 through a fixing nail 16; the first rotating plate 10 and the second rotating plate 11 are parallelogram sections, the first rotating plate 10 and the second rotating plate 11 are provided with rotating plate channels 17 corresponding to the wiring channels 12, and a first moving contact 18 is arranged in the rotating plate channel 17 of the first rotating plate 10; a second movable contact 19 is arranged in a rotating plate channel 17 of the second rotating plate 11, the right end of the first movable contact 18 is contacted with the first fixed terminal 13 of the positive wiring plate 8, and the left end of the second movable contact 19 is contacted with the first fixed terminal 13 of the negative wiring plate 9; the left end of the first movable contact 18 is contacted with the right end of the second movable contact 19; the front side and the rear side of the first rotating plate 10 and the second rotating plate 11 are provided with rotating shafts 20, and the rotating shafts 20 are rotatably connected with the front side wall and the rear side wall of the base 1; a first turbine 21 is keyed on the front side rotating shaft 20 of the first rotating plate 10, and a second turbine 22 is keyed on the front side rotating shaft 20 of the second rotating plate 11; the outer ends of the first turbine 21 and the second turbine 22 are provided with insulating protective covers 23, and the insulating protective covers 23 are fixed with the front walls of the base 1 through bolts; the upper ends of the first worm wheel 21 and the second worm wheel 22 are provided with worm screws 24 matched with the first worm wheel 21 and the second worm wheel 22, and the worm screws 24 are rotatably connected to the left side wall and the right side wall of the insulating protective cover 23; a knob opening 25 is arranged at the left end of the base 1 opposite to the worm 24, the left end of the worm 24 is connected with a connecting rod 26 through a coupler, and the left end of the connecting rod 26 penetrates through the outer end of the knob opening 25 to be fixed with a switch knob 27; the switch knob 27 is made of insulating materials, and an arc-shaped sliding groove 28 is formed in the outer end of the left side wall of the base 1; the switch knob 27 is provided with a sliding block 29 matched with the arc-shaped sliding groove 28; when the wiring of the device is communicated, the sliding block 29 is positioned at the lower end of the arc-shaped sliding chute 28; the first rotating plate 10 and the second rotating plate 11 are in a horizontal state, the right end of the first movable contact 18 is in contact with the first fixed terminal 13 of the positive wiring board 8, and the left end of the second movable contact 19 is in contact with the first fixed terminal 13 of the negative wiring board 9; the left end of the first movable contact 18 is contacted with the right end of the second movable contact 19; the switch knob 27 is rotated anticlockwise, and the worm 24 drives the first rotating plate 10 and the second rotating plate 11 to rotate instantaneously; if an arc is generated, the current direction is from right to left, the electromagnetic direction is from front to back, and the direction of the electrodynamic force is upward according to the left-hand rule; the electric arc is attracted by the arc striking plate 7, so that the electric arc can quickly enter the arc extinguishing device 6, and the arc extinguishing device 6 interrupts the electric arc for arc extinguishing; the first rotating plate 10 and the second rotating plate 11 are in a vertical state, the device is in a disconnected state, and the first rotating plate 10 and the second rotating plate 11 are made of insulating materials and can also play a role in separation.

In the first embodiment, the arc extinguishing device 6 includes a metal block 30, the metal block 30 is made of steel, and the metal block 30 is fixed to the upper cover 2 by bolts; the bottom of the metal block 30 is uniformly provided with grooves 31, and the grooves 31 are arranged along the front-back direction; the bottom of the groove 31 is provided with an arc isolating net 32, and the arc isolating net 32 is woven by a plurality of metal wires; after the arc is cut off by the groove 31, the residual arc is conducted to the arc separation net 32, and the arc separation net 32 woven by a plurality of metal wires can increase the passing speed of the arc, thereby being beneficial to the dissipation of the arc and improving the arc extinguishing performance; through the dual function of the groove 31 and the arc isolating net 32, the arc extinguishing chamber can achieve a better arc extinguishing effect.

In the second embodiment, the arc extinguishing device 6 comprises a metal block 30, the metal block 30 is made of steel, and the metal block 30 is fixed to the upper cover 2 through bolts; the bottom of the metal block 30 is uniformly provided with grooves 31, and the grooves 31 are arranged along the front-back direction; the lower end of the groove 31 is wide, and the upper end of the groove is narrow; the bottom of the groove 31 is provided with an arc isolating net 32, and the arc isolating net 32 is woven by a plurality of metal wires; the lower end of the groove 31 is wide, and the upper end of the groove is narrow; the mode that the shrink gradually set up can increase electric arc and lean on the pressure of in-process in the transmission, carries out better distortion to electric arc to further improve arc extinguishing performance.

Although the present invention has been described in detail with reference to the foregoing examples, it will be apparent to those skilled in the art that various changes and modifications can be made in the embodiments described above, or equivalent changes and modifications can be made to some of the technical features of the embodiments described above, and any changes, equivalents, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. The utility model provides a take switch of arc extinguishing function, includes base and upper cover, detachable fixed connection, its characterized in that between base and the upper cover: the base is of a box structure, a positive wiring hole is formed in the left end of the base, and a negative wiring hole is formed in the right side of the base; a switch device for controlling on and off is arranged in the base; a permanent magnet is embedded in the side wall of the base; the permanent magnet is embedded in the side wall of the base at the right end in the current direction, and one end of the permanent magnet close to the switch device is an N pole; and an arc extinguishing device is arranged at the lower end of the upper cover.

2. The switch with the arc extinguishing function according to claim 1, characterized in that: and an arc striking plate for attracting electric arcs is arranged at the lower end of the arc extinguishing device.

3. A switch with arc extinguishing function according to any one of claims 1-2, characterized in that: the switch device comprises a positive wiring board, a negative wiring board, a first rotating board and a second rotating board which are made of insulating materials; the positive wiring board is arranged on the right side of the base, and the negative wiring board is arranged on the left side of the base; the positive wiring board is of a Z-shaped structure, and the left end of the positive wiring board is provided with an inclined plane which inclines downwards to the right; a Z-shaped wiring channel is arranged in the positive wiring board, a first static terminal is arranged at the left end of the wiring channel in an expanding and contracting mode, a second static terminal is arranged at the right end of the wiring channel in an expanding and contracting mode, an insulating ring is surrounded on the outer side of the second static terminal, a fixing nail for fixing an external lead is arranged at the upper end of the second static terminal, the fixing nail is in threaded fit with the upper end of the second static terminal, and the first static terminal and the second static terminal are electrically connected through leads; the negative wiring board and the positive wiring board are axisymmetric and have the same structure; the first rotating plate and the second rotating plate are parallelogram sections, the first rotating plate and the second rotating plate are provided with rotating plate channels corresponding to the wiring channels, and a first movable contact is arranged in the rotating plate channel of the first rotating plate; a second movable contact is arranged in a rotating plate channel of the second rotating plate, the right end of the first movable contact is contacted with the first fixed terminal of the positive wiring plate, and the left end of the second movable contact is contacted with the first fixed terminal of the negative wiring plate; the left end of the first movable contact is in contact with the right end of the second movable contact; the front side and the rear side of the first rotating plate and the second rotating plate are provided with rotating shafts, and the rotating shafts are rotatably connected with the front side wall and the rear side wall of the base; the front side rotating shaft of the first rotating plate is in keyed connection with a first turbine, and the front side rotating shaft of the second rotating plate is in keyed connection with a second turbine; the outer ends of the first turbine and the second turbine are provided with insulating protective covers, and the insulating protective covers are fixed with the front wall of the base; the upper ends of the first turbine and the second turbine are provided with worms matched with the first turbine and the second turbine, and the worms are rotationally connected to the left side wall and the right side wall of the insulating protective cover; a knob opening is formed in the position, opposite to the worm, of the left end of the base, the left end of the worm is connected with the connecting rod through a coupler, and the left end of the connecting rod penetrates through the outer end of the knob opening to be fixed with the switch knob; the switch knob is made of an insulating material; the permanent magnet is embedded in the rear wall of the base.

4. A switch with arc extinguishing function according to claim 3, characterized in that: the outer end of the left side wall of the base is provided with an arc-shaped sliding chute; and a sliding block matched with the arc-shaped sliding groove is arranged on the switch knob.

5. The switch with the arc extinguishing function according to claim 4, characterized in that: the arc extinguishing device comprises a metal block, and the metal block is fixed with the upper cover through a bolt; the bottom of the metal block is uniformly provided with grooves which are arranged along the front-back direction.

6. The switch with the arc extinguishing function according to claim 5, characterized in that: the lower end of the groove is wide, and the upper end of the groove is narrow.

7. A switch with arc extinguishing function according to any one of claims 5-6, characterized in that: the bottom of the groove is provided with an arc isolating net which is woven by a plurality of metal wires.

8. The switch with the arc extinguishing function according to claim 7, characterized in that: the metal block is made of steel.

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