CN213026008U

CN213026008U - Power switch

Info

Publication number: CN213026008U
Application number: CN202022104959.3U
Authority: CN
Inventors: 夏晶; 束美俊
Original assignee: Anhui Hengchuangkai Electric Technology Co ltd
Current assignee: Anhui Hengchuangkai Electric Technology Co ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-04-20
Anticipated expiration: 2030-09-23

Abstract

The utility model relates to a power switch, including: a plurality of static electrodes, a first end of each static electrode having a first contact; a plurality of dynamic electrodes, each dynamic electrode having a first end with a second contact capable of making and breaking electrical contact with the first contact; the first end of each power supply electrode is connected with a power supply, part of the power supply electrodes are arranged corresponding to the dynamic electrodes, and the second end of each power supply electrode in the part of the power supply electrodes is electrically connected with the second end of the corresponding dynamic electrode through a flexible lead; and the thermal deformation component is in linkage connection with the dynamic electrodes, can be thermally deformed to a disconnection position and drives the dynamic electrodes to move so as to disconnect the second contacts of the dynamic electrodes from the first contacts of the static electrodes. The utility model discloses can be through thermal deformation to the disconnection position of thermal deformation subassembly when current-carrying conductor current transships or resistance is too big for switch auto-power-off, thereby play the effect of control by temperature change protection.

Description

Power switch

Technical Field

The utility model relates to a power switch.

Background

The existing power switch is not provided with a temperature control protection device, and when the current of a current-carrying conductor is overloaded or the resistance is overlarge, the electrode is overheated, so that potential safety hazards are brought.

In addition, the contacts of the conventional power switch are easily subjected to arcing at the closing or opening moment, and the contacts are easily burned out.

SUMMERY OF THE UTILITY MODEL

Therefore, an object of the present invention is to provide a power switch capable of protecting temperature.

In order to achieve the above object, the present invention provides a power switch, which is characterized in that: a plurality of static electrodes, each of the static electrodes having a first contact at a first end; a plurality of dynamic electrodes, each of said dynamic electrodes having a first end with a second contact capable of making and breaking electrical contact with said first contact; the first end of each power supply electrode is connected with a power supply, part of the power supply electrodes are arranged corresponding to the dynamic electrodes, and the second end of each power supply electrode in the part of the power supply electrodes is electrically connected with the second end of the corresponding dynamic electrode through a flexible lead; and the thermal deformation component is in linkage connection with the dynamic electrodes and can be heated and deformed to a disconnection position and drive the dynamic electrodes to move so as to disconnect the second contacts of the dynamic electrodes from the first contacts of the static electrodes.

In an embodiment of the present invention, the thermal deformation assembly includes: the bracket base is pivoted with a button; the positioning piece is rotatably connected to the bracket base and is in linkage connection with the button; the pressing block is provided with a plurality of pressing parts which are respectively pressed on the upper surfaces of the plurality of dynamic electrodes correspondingly, and the pressing block is also provided with a positioning part which can be in contact positioning or contact releasing with the first end of the positioning part; the touch switch is pivoted on the bracket base and is provided with a bayonet which is matched with the second end of the positioning piece for positioning or releasing contact; the electrode springs are correspondingly arranged below the lower surfaces of the dynamic electrodes; the thermal deformation pieces are arranged corresponding to part of the power supply electrodes, the first end of each thermal deformation piece is connected to the corresponding power supply electrode, the second end of each thermal deformation piece is connected to the touch switch, and the thermal deformation pieces can be thermally deformed to the off position; when the button is in an open position, the button drives the pressing block to downwards abut against the dynamic electrode through the bracket base to enable the dynamic electrode to downwards move, so that a second contact of the dynamic electrode is in conductive contact with a first contact of the static electrode, a first end of the positioning piece is in contact positioning with the positioning part of the pressing block, a second end of the positioning piece is in matched contact positioning with the bayonet of the touch switch, and the power switch is in a conducting state; when the button is in a disconnected position, the electrode spring drives the dynamic electrode to move upwards, so that the second contact of the dynamic electrode is disconnected from the first contact of the static electrode, the positioning part of the pressing block is in loose contact with the first end of the positioning part, and the power switch is in a disconnected state; when the thermal deformation piece is heated and deformed to the disconnection position, the touch switch moves towards the deformation direction and enables the second end of the positioning piece to be in loose contact with the bayonet, the rebound of the electrode spring drives the dynamic electrode to move upwards, the second contact of the dynamic electrode is enabled to be disconnected with the first contact of the static electrode, and the power switch is in a disconnection state.

In an embodiment of the present invention, a positioning boss is further formed on the lower edge of the bayonet.

In an embodiment of the present invention, the power switch further includes: the arc isolation covers are arranged corresponding to the first ends of the dynamic electrodes, each arc isolation cover is provided with an isolation groove arranged on the outer sides of the first contact and the second contact, and the first ends of the dynamic electrodes can move up and down along the isolation grooves.

In an embodiment of the present invention, each of the arc-isolating covers is formed by stacking a plurality of metal isolating sheets at intervals; and/or the isolation groove comprises a circular arc-shaped part and an oblong part positioned in the middle of the circular arc-shaped part.

In an embodiment of the invention, the first contact and the second contact are silver contacts.

In an embodiment of the present invention, the second end of the first power electrode of the plurality of power electrodes is a live wire connected to the power supply, the second end of the second power electrode of the plurality of power electrodes is a zero wire connected to the power supply, and the second end of the third power electrode of the plurality of power electrodes is a ground wire connected to the power supply.

In an embodiment of the present invention, the power switch further includes: the upper cover and the lower cover are assembled in a matching mode, an accommodating space is formed between the upper cover and the lower cover, the static electrodes, the dynamic electrodes, the power electrodes and the thermal deformation assembly are accommodated in the accommodating space, and the upper cover is further provided with a button opening used for exposing the assembled button.

In an embodiment of the present invention, the power switch further includes: and the decorative plate covers the upper cover and is provided with a decorative opening for exposing the assembled button.

In an embodiment of the present invention, the power switch further includes: and the wire pressing plate is matched with a wire pressing hole arranged on the lower cover to tightly press the live wire, the zero wire and the grounding wire of the power supply.

The utility model discloses a switch passes through thermal deformation subassembly, but thermal deformation to disconnection position when current-carrying conductor current transships or resistance is too big for switch auto-power-off, thereby play the effect of control by temperature change protection.

The utility model discloses a switch can be closed and open the effect of playing the arc extinguishing in the twinkling of an eye through setting up the arc shield at the contact to the risk that the contact was burnt out has been avoided.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

Fig. 1A is a front view of the power switch of the present invention;

fig. 1B is a back view of the power switch of the present invention;

fig. 1C is an exploded schematic view of the power switch of the present invention;

FIG. 2A is a schematic diagram of the power switch of FIG. 1C after assembly of some components;

FIG. 2B is a schematic structural view of the static electrode and the dynamic electrode of FIG. 2A assembled together;

FIG. 2C is a schematic structural view of the arc shield of FIG. 2A;

FIG. 2D is a top view of the static electrode, the dynamic electrode, and the arc shield after assembly;

FIG. 2E is a schematic structural view of the touch switch and the positioning member shown in FIG. 2A;

fig. 3A is a schematic diagram illustrating the components of the power switch of the present invention in an open state;

fig. 3B is a schematic diagram illustrating the components of the power switch of the present invention in an off state;

fig. 3C is a schematic diagram illustrating the cooperation of the thermal deformation component of the power switch, the touch switch, the positioning element, the button and the thermal deformation component when the thermal deformation component is subjected to thermal deformation.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

When introducing elements/components/etc. described and/or illustrated herein, the articles "a," "an," "the," "said," and "at least one" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. Furthermore, the terms "first," "second," and the like in the claims are used merely as labels, and are not numerical limitations of their objects.

As shown in fig. 1A to 1C, the power switch 100 of the present invention mainly includes a plurality of static electrodes 10, a plurality of dynamic electrodes 20, a plurality of power electrodes 20, and a thermal deformation member 40. Each static electrode 10 has a first end with a first contact 11 and a second end electrically connected to an electrical device, for example, via a terminal 12. The first end of each of the dynamic electrodes 20 has a second contact 21, the second contact 21 being capable of making and breaking electrical contact with the first contact 11. The plurality of power electrodes 30 includes, for example, a first power electrode 30a, a second power electrode 30b and a third power electrode 30c, wherein a first end of each of the power electrodes 30 is connected to a power source, for example, the first end of the first power electrode 30a is connected to a live wire of the power source through a terminal, the first end of the second power electrode 30b is connected to a neutral wire of the power source through a terminal, and the first end of the third power electrode 30c is connected to a ground wire of the power source through a terminal. Moreover, some of the power electrodes in the plurality of power electrodes 30, for example, include a first power electrode 30a and a second power electrode 30b, which are disposed corresponding to the plurality of dynamic electrodes 20, and second ends of the first power electrode 30a and the second power electrode 30b are electrically connected to second ends of the corresponding dynamic electrodes 20 through flexible wires. The thermal deformation element 40 is linked with the plurality of dynamic electrodes 20, and the thermal deformation element 40 can be thermally deformed to an off position and drive the plurality of dynamic electrodes 20 to move, so that the second contact 21 of the dynamic electrode 20 is disconnected from the first contact 11 of the static electrode 10.

As shown in fig. 2A and 2B, and with reference to fig. 1C, in the present invention, the first contact 11 of the static electrode 10 may be, for example, a silver contact, and is disposed on the upper surface of the first end of the static electrode 10. Correspondingly, the second contact 21 of the dynamic electrode 20 may also be a silver contact, for example, and is disposed on the lower surface of the first end of the dynamic electrode 20. Preferably, the static electrode 10 and the dynamic electrode 20 are disposed at a substantially right angle. And, the second end of the static electrode 10 is further bent downward to form a bent portion 16 for connecting with the terminal 12. Furthermore, the bending portion 16 may further be provided with an anti-slip groove 17.

As shown in fig. 2C and fig. 2D, referring to fig. 1C and fig. 2A, the power switch of the present invention further includes a plurality of arc-isolating covers 50, which are disposed corresponding to the first ends of the plurality of dynamic electrodes 20, and the arc-isolating covers 50 have an isolating groove 501 disposed outside the first contact 11 and the second contact 21, and the first end of the dynamic electrode 20 can move up and down along the isolating groove 501. Preferably, each of the arc-isolating shields 50 is formed by stacking a plurality of metal isolating sheets 51 at intervals through a supporting frame 52. The isolation groove 501 may include, for example, a circular arc portion 511 and an oblong portion 512 located in the middle of the circular arc portion 511. The utility model discloses an arc shield 50 can effectively eliminate first contact 11 with second contact 21 is closed and is opened the produced electric arc in the twinkling of an eye, plays the effect of arc extinguishing promptly to can avoid the contact to be burnt out.

As shown in fig. 2A and 2E, with reference to fig. 1C, in the present invention, the thermal deformation assembly 40 may include, for example, a bracket holder 41, a positioning member 42, a pressing member 43, a touch switch 44, a plurality of electrode springs 45, and a plurality of thermal deformation members 46.

As shown in fig. 2A, with reference to fig. 1C, a button 410 is pivotally connected to the frame base 41, the button 410 can be engaged with a corresponding pivot hole 411 of the frame base 41 through a pivot hole 4101, and is pivotally connected to the frame base 41 through a pivot 4111 and a resilient member 4114 sleeved on the pivot 4111, so that the button 410 can rotate (or move) between an open position and a closed position.

As shown in fig. 2A and referring to fig. 1C, the button 410 may further be pivotally connected to a pivot 41121 of a C-shaped pivot 4112 through a pivot hole 4102 thereof, and another pivot 41122 of the C-shaped pivot 4112 is pivotally connected to a pivot hole 412 of the bracket base 41 and a pivot hole 423 of the positioning member 42, so that the positioning member 42 is rotatably connected to the bracket base 41 and is linked to the button 410.

As shown in fig. 2A, and with combined reference to fig. 1C and fig. 3A, the pressing block 43 has a plurality of pressing portions 431 and a positioning portion 432 thereon (see fig. 3A). The pressing portions 431 are respectively pressed against the upper surfaces of the dynamic electrodes 20. The positioning portion 432 can be in contact with or released from contact with the first end of the positioning member 42.

As shown in fig. 2A and fig. 2E, with reference to fig. 1C and fig. 3C, the trigger switch 44 is pivotally connected to the supporting frame 41 through a pivot hole 444 of the trigger switch and a pivot hole 414 of the supporting frame 41. The trigger switch 44 further has a bayonet 441 (see fig. 2E), which can be in contact with and fixed or released from the second end 422 of the positioning member 42. In this embodiment, the bayonet 441 may be, for example, a square opening, and the lower edge thereof may further extend and protrude to form a positioning boss 442 for matching with the bayonet 441 and the positioning member 42 to perform positioning.

As shown in fig. 3A and with reference to fig. 1C, the plurality of electrode springs 45 are correspondingly disposed below the lower surfaces of the plurality of dynamic electrodes 20, and are cooperatively mounted, for example, by the spring mounting portions 25 (see fig. 1C) on the lower surfaces of the dynamic electrodes 20, and can be compressed when the dynamic electrodes 20 move downward and rebound to drive the dynamic electrodes 20 to move upward when the positioning members 42 are released.

As shown in fig. 3C, with reference to fig. 1C and fig. 2A, the plurality of thermal deformation members 46 are disposed corresponding to the portions of the power supply electrodes (e.g., the first power supply electrode 30a and the second power supply electrode 30b), a first end of each thermal deformation member 46 is connected to the corresponding power supply electrode 30, a second end of each thermal deformation member 46 is connected to the trigger switch 44, and the plurality of thermal deformation members 46 can be thermally deformed to an off position, so as to drive the trigger switch 44 to move in a deformation direction, and further to release the contact of the positioning member 42, so that the dynamic electrode 20 can move upward under the resilient force of the electrode spring 45, so as to disconnect the second contact 21 from the first contact 11, and the upward movement of the dynamic electrode 20 also causes the pressing block 43 to move upward and drive the holder 41 to move upward, the button 410 is also moved to the off position accordingly, so that the power switch 100 is in the off state, thereby achieving the automatic power-off. In the present invention, these thermal deformation members 46 may be, for example, metal sheets, when the current carrying conductor is overloaded or the resistance is too large, the first power supply electrode 30a and the second power supply electrode 30b (e.g., copper sheets) will slowly heat up, and the thermal deformation members 46 will gradually deform along with the temperature change, for example, when the temperature is about 100 to 125 degrees, the force generated by the deformation amount can toggle the touch switch 44 to automatically turn off the power supply. When the temperature returns to normal, the thermally deformable member 46 may return to the original position (i.e., return to the position and state before the deformation occurred). Of course, it is understood that the thermal deformation member 46 may be made of other materials capable of being deformed by heat, and the amount of deformation may be designed according to actual needs, which should not be construed as a limitation to the present invention.

As shown in fig. 3A, when the button 410 is turned down in the direction F1 to be in an on position, the button 410 drives the pressing block 43 to press the dynamic electrode 20 downward through the holder base 41 to move downward, as shown in the direction F2 in the figure, the second contact 21 of the dynamic electrode 20 is in conductive contact with the first contact 11 of the static electrode 10, at this time, the first end 421 (see fig. 3C) of the positioning element 42 is in contact positioning with the positioning portion 432 of the pressing block 43, and the second end 422 (see fig. 3C) of the positioning element 42 is in contact positioning with the bayonet 441 of the trigger switch 44, at this time, the power switch 100 is in an on state.

As shown in fig. 3B, when the button 410 is pushed up in the direction F3 to be in an off position, the dynamic electrode 20 is driven to move upward by the rebound of the electrode spring 45, as shown in the direction F4, the second contact 21 of the dynamic electrode 20 is disconnected from the first contact 11 of the static electrode 10, and the positioning portion 432 of the pressing block 43 is released from the contact with the first end 421 (see fig. 3C) of the positioning member 42, and at this time, the power switch 100 is in an off state.

When the thermal deformation element 46 is heated and deformed to an off position along the deformation direction F5, as shown in fig. 3C, the trigger switch 44 can be driven to move toward the deformation direction F5, and the second end 422 (see fig. 3C) of the positioning member 42 is released from contact with the bayonet 441 and the positioning boss 442 of the tact switch 44, so that the electrode spring 45 can drive the dynamic electrode 20 to move upwards, the second contact 21 (see fig. 2B) of the dynamic electrode 20 is disconnected from the first contact 11 (see fig. 2B) of the static electrode 10, and the upward movement of the dynamic electrode 20 also causes the pressing block 43 to move upward and drive the bracket holder 41 to move upward, so that the button 410 is correspondingly moved to the off position, and at this time, the power switch 100 is in the off state, as shown in fig. 3B.

Referring back to fig. 1A to 1C, preferably, the power switch 100 of the present invention may further include a lower cover 61 and an upper cover 62 which are assembled in a relative fit manner, a receiving space is formed between the upper cover 62 and the lower cover 61, the plurality of static electrodes 10, the plurality of dynamic electrodes 20, the plurality of power electrodes 30 and the thermal deformation member 40 are received in the receiving space, and the upper cover 62 further has a button opening 621 for exposing the assembled button 410.

Further, the power switch 100 may further include a decorative plate 63 covering the upper cover 62, and the decorative plate 63 may further have a decorative opening 631 for exposing the assembled button 410.

Preferably, as shown in fig. 1C, the power switch 100 further includes a wire pressing plate 64, which can be engaged with a wire pressing hole 614 disposed on the lower cover 61 through a screw 641 to press the power wire, the neutral wire, the ground wire, and the like.

Exemplary embodiments of the present invention have been particularly shown and described above. It is to be understood that the invention is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A power switch, comprising:

a plurality of static electrodes, each of the static electrodes having a first contact at a first end;

a plurality of dynamic electrodes, each of said dynamic electrodes having a first end with a second contact capable of making and breaking electrical contact with said first contact;

the first end of each power supply electrode is connected with a power supply, part of the power supply electrodes are arranged corresponding to the dynamic electrodes, and the second end of each power supply electrode in the part of the power supply electrodes is electrically connected with the second end of the corresponding dynamic electrode through a flexible lead;

and the thermal deformation component is in linkage connection with the dynamic electrodes and can be heated and deformed to a disconnection position and drive the dynamic electrodes to move so as to disconnect the second contacts of the dynamic electrodes from the first contacts of the static electrodes.

2. The power switch of claim 1, wherein the thermal deformation component comprises:

the bracket base is pivoted with a button;

the positioning piece is rotatably connected to the bracket base and is in linkage connection with the button;

the pressing block is provided with a plurality of pressing parts which are respectively pressed on the upper surfaces of the plurality of dynamic electrodes correspondingly, and the pressing block is also provided with a positioning part which can be in contact positioning or contact releasing with the first end of the positioning part;

the touch switch is pivoted on the bracket base and is provided with a bayonet which is matched with the second end of the positioning piece for positioning or releasing contact;

the electrode springs are correspondingly arranged below the lower surfaces of the dynamic electrodes;

the thermal deformation pieces are arranged corresponding to part of the power supply electrodes, the first end of each thermal deformation piece is connected to the corresponding power supply electrode, the second end of each thermal deformation piece is connected to the touch switch, and the thermal deformation pieces can be thermally deformed to the off position;

when the button is in an open position, the button drives the pressing block to downwards abut against the dynamic electrode through the bracket base to enable the dynamic electrode to downwards move, so that a second contact of the dynamic electrode is in conductive contact with a first contact of the static electrode, a first end of the positioning piece is in contact positioning with the positioning part of the pressing block, a second end of the positioning piece is in matched contact positioning with the bayonet of the touch switch, and the power switch is in a conducting state;

when the button is in a disconnected position, the electrode spring drives the dynamic electrode to move upwards, so that the second contact of the dynamic electrode is disconnected from the first contact of the static electrode, the positioning part of the pressing block is in loose contact with the first end of the positioning part, and the power switch is in a disconnected state;

when the thermal deformation piece is heated and deformed to the disconnection position, the touch switch moves towards the deformation direction and enables the second end of the positioning piece to be in loose contact with the bayonet, the rebound of the electrode spring drives the dynamic electrode to move upwards, the second contact of the dynamic electrode is enabled to be disconnected with the first contact of the static electrode, and the power switch is in a disconnection state.

3. The power switch of claim 2, wherein a positioning boss is further formed on the lower edge of the bayonet.

4. A power switch as claimed in claim 1, 2 or 3, further comprising:

the arc isolation covers are arranged corresponding to the first ends of the dynamic electrodes, each arc isolation cover is provided with an isolation groove arranged on the outer sides of the first contact and the second contact, and the first ends of the dynamic electrodes can move up and down along the isolation grooves.

5. The power switch of claim 4, wherein each arc-isolating shield is formed by stacking a plurality of metal isolating sheets at intervals; and/or the isolation groove comprises a circular arc-shaped part and an oblong part positioned in the middle of the circular arc-shaped part.

6. The power switch of claim 1, wherein the first and second contacts are silver contacts.

7. A power switch in accordance with claim 2 or 3, wherein the second end of the first power electrode of the plurality of power electrodes is a live wire connected to a power supply, the second end of the second power electrode of the plurality of power electrodes is a neutral wire connected to the power supply, and the second end of the third power electrode of the plurality of power electrodes is a ground wire connected to the power supply.

8. The power switch of claim 7, further comprising:

the upper cover and the lower cover are assembled in a matching mode, an accommodating space is formed between the upper cover and the lower cover, the static electrodes, the dynamic electrodes, the power electrodes and the thermal deformation assembly are accommodated in the accommodating space, and the upper cover is further provided with a button opening used for exposing the assembled button.

9. The power switch of claim 8, further comprising:

and the decorative plate covers the upper cover and is provided with a decorative opening for exposing the assembled button.

10. The power switch of claim 8, further comprising:

and the wire pressing plate is matched with a wire pressing hole arranged on the lower cover to tightly press the live wire, the zero wire and the grounding wire of the power supply.