CN213025886U

CN213025886U - Power switch

Info

Publication number: CN213025886U
Application number: CN202022108175.8U
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 contact pairs, each contact pair including a first contact and a second contact which are arranged correspondingly and capable of electrically conductive contact with or disconnection contact from each other; and the arc-isolating shields are arranged corresponding to the contact pairs, and each arc-isolating shield is provided with an isolating groove arranged at the outer sides of the first contact and the second contact. 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.

Description

Power switch

Technical Field

The utility model relates to a power switch.

Background

The contact of the existing power switch is easy to generate electric arc at the closing or opening moment, so that the contact is easy to burn out.

SUMMERY OF THE UTILITY MODEL

Therefore, an object of the present invention is to provide a power switch capable of having an arc extinguishing effect to effectively avoid the risk of the contact being burned out.

In order to achieve the above object, the present invention provides a power switch, which is characterized in that: a plurality of contact pairs, each contact pair including a first contact and a second contact which are arranged correspondingly and capable of electrically conductive contact with or disconnection contact from each other; and the arc-isolating shields are arranged corresponding to the contact pairs, and each arc-isolating shield is provided with an isolating groove arranged at the outer sides of the first contact and the second contact.

In an embodiment of the present invention, each of the arc-isolating covers is formed by stacking a plurality of metal isolating sheets through a supporting frame at intervals.

In an embodiment of the present invention, the isolation groove includes an arc-shaped portion and an oblong portion located in the middle of the arc-shaped portion; and/or the support frame is also provided with a plurality of through holes which are arranged corresponding to the gaps between two adjacent metal spacing pieces in the plurality of metal spacing pieces.

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

In an embodiment of the present invention, the power switch further includes: a plurality of static electrodes, each of the static electrodes having the first contact on a first end thereof; a plurality of dynamic electrodes, wherein the first end of each dynamic electrode is provided with the second contact point, and the first end of each dynamic electrode can move up and down along the isolation groove; 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.

In an embodiment of the present invention, the power switch further 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 positioning bracket is pivoted on the bracket seat and is in matched contact with the second end of the positioning piece for positioning or loose contact; the electrode springs are correspondingly arranged below the lower surfaces of the dynamic electrodes; 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 positioning bracket, 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 first end of the positioning piece is in loose contact with the positioning part of the pressing block, the second end of the positioning piece is in loose contact with the positioning support, and the power switch is in a disconnected state.

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 matched mode, an accommodating space is formed between the upper cover and the lower cover, the static electrodes, the dynamic electrodes, the power electrodes, the arc isolating cover, the support base, the positioning piece, the pressing block, the positioning support and the electrode springs are accommodated in the accommodating space, and a button opening is further formed in the upper cover and 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 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 top view of the static electrode, the dynamic electrode, and the arc shield after assembly;

FIG. 3A is a schematic structural view of the arc shield of FIG. 2A;

FIG. 3B is a schematic structural view of a metal spacer of the arc chute of FIG. 3A;

fig. 3C is a schematic structural view of the support frame of the arc chute in fig. 3A.

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 an arc-isolating cover 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 13. 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 first contact 11 of a static electrode 10 forms a contact pair with the second contact 21 of a correspondingly arranged dynamic electrode 20. In the present embodiment, the two static electrodes 10 and the two dynamic electrodes 20 are arranged in one-to-one correspondence and form two contact pairs, and the first contact 11 and the second contact 21 in each contact pair can be in conductive contact or out of contact with each other.

As shown in fig. 2A to 2C, 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, as shown in fig. 2B, the second end of the static electrode 10 is further bent downward to form a bent portion 12 for connecting with the terminal 13. Furthermore, the bending portion 12 may further be provided with an anti-slip groove 121.

As shown in fig. 3A to 3C, referring to fig. 1C and fig. 2A, the arc-isolating covers 40 are respectively disposed corresponding to each contact pair, and the arc-isolating covers 40 further have an isolating slot 401 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 slot 401. Also, the isolation slot 401 may include, for example, a circular arc portion 411 and an oblong portion 412 located in the middle of the circular arc portion 411. Preferably, each of the arc-isolating covers 40 is formed by stacking a plurality of metal isolating sheets 41 at intervals through a supporting frame 42, for example, supporting portions 413 are provided at two ends of each of the metal isolating sheets 41, and supporting holes 423 are correspondingly provided at two end surfaces of the supporting frame 41 to support the supporting portions 413 of each of the metal isolating sheets 41. Preferably, the supporting frame 42 further has a plurality of through holes 424, and the through holes 424 are disposed corresponding to the gaps 425 between two adjacent metal spacers 41. The utility model discloses an arc-isolating cover 40 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.

Referring back to fig. 1C and 2A, in the present invention, the plurality of power electrodes 30 may include, for example, a first power electrode 31, a second power electrode 32 and a third power electrode 33, wherein a first end of each of the power electrodes 30 is connected to a power source, for example, a first end of the first power electrode 31 may be connected to a live wire of the power source through a terminal 34, a first end of the second power electrode 32 may be connected to a neutral wire of the power source through a terminal 34, and a first end of the third power electrode 33 may be connected to a ground wire of the power source through a terminal 34. Moreover, some of the power electrodes in the plurality of power electrodes 30, for example, include a first power electrode 31 and a second power electrode 32, which are disposed corresponding to the plurality of dynamic electrodes 20, and second ends of the first power electrode 31 and the second power electrode 32 are electrically connected to second ends of the corresponding dynamic electrodes 20 through flexible wires.

With continued reference to fig. 1C and fig. 2A, in the present invention, the power switch 100 further includes a bracket base 50, a positioning member 71, a pressing block 72, a positioning bracket 73, and a plurality of electrode springs 25. The button 60 is pivotally connected to the holder base 50, and the button 60 is capable of cooperating with a corresponding pivot hole 51 of the holder base 50 through a pivot hole 61, and is rotatably pivoted to the holder base 50 through a pivot 54 and an elastic member 55 sleeved on the pivot 54, so that the button 60 can rotate (or move) between an open position and a closed position.

The button 60 is further pivotally connected to a pivot 561 of a C-shaped pivot 56 through a pivot hole 62, and another pivot 562 of the C-shaped pivot 56 is pivotally connected to the pivot hole 52 of the frame base 50 and the pivot hole of the positioning member 71, so that the positioning member 71 is rotatably connected to the frame base 50 and is linked to the button 60.

The pressing block 72 has a plurality of pressing portions 721 and a positioning portion 722. The pressing portions 721 respectively press against the upper surfaces of the dynamic electrodes 20. The positioning portion 722 can be in contact with or released from contact with the first end of the positioning member 71.

The positioning bracket 73 is pivotally connected to the bracket base 50 through the pivotally connecting hole 731 of the positioning bracket and the pivotally connecting hole 53 of the bracket base 50. And, the positioning bracket 73 can be in fit contact with the second end of the positioning member 71 to position or release contact.

The plurality of electrode springs 25 are correspondingly disposed under the lower surfaces of the plurality of dynamic electrodes 20, and are, for example, cooperatively mounted through spring mounting portions 24 (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 71 are released.

As shown in fig. 2A, when the button 60 is shifted to an open position, the button 60 can drive the pressing block 72 to press the dynamic electrode 20 downward through the bracket seat 50 to move downward, so that the second contact 21 of the dynamic electrode 20 is in conductive contact with the first contact 11 of the static electrode 10, the first end of the positioning element 71 is in contact positioning with the positioning portion 722 of the pressing block 72, the second end of the positioning element 71 is in contact positioning with the positioning bracket 73 in a matching manner, and the power switch 100 is in a conducting state.

When the button 60 is turned to an off position, the button 60 drives the positioning element 71 to be in a contact-released state through the holder 50, and at this time, the dynamic electrode 20 is driven to move upward through the rebound of the electrode spring 25, so that the second contact 21 of the dynamic electrode 20 is in contact with the first contact 11 of the static electrode 10, and at this time, the power switch 100 is in an off state.

Referring back to fig. 1A to 1C, preferably, the power switch 100 of the present invention may further include a lower cover 91 and an upper cover 92 which are assembled in a relative fit manner, a receiving space is formed between the upper cover 92 and the lower cover 91, the plurality of static electrodes 10, the plurality of dynamic electrodes 20, the plurality of power electrodes 30, the arc-isolating cover 40, the holder base 50, the positioning member 71, the pressing block 72, the positioning holder 73, and the plurality of electrode springs 25 are received in the receiving space, and the upper cover 92 further has a button opening 926 for exposing the assembled button 60.

Further, the power switch 100 may further include a decorative plate 93 covering the upper cover 92, and the decorative plate 93 may further have a decorative opening 936 for exposing the assembled button 60.

Preferably, as shown in fig. 1C, the power switch 100 may further include a wire pressing plate 94, which is screwed into a wire pressing hole 914 provided on the lower cover 91 to press the live wire, the neutral wire, the ground wire, and the like of the power supply.

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 contact pairs, each contact pair including a first contact and a second contact which are arranged correspondingly and capable of electrically conductive contact with or disconnection contact from each other;

and the arc-isolating shields are arranged corresponding to the contact pairs, and each arc-isolating shield is provided with an isolating groove arranged at the outer sides of the first contact and the second contact.

2. The power switch of claim 1, wherein each arc-isolating shield is formed by stacking a plurality of metal isolating sheets at intervals via a supporting frame.

3. A power switch as claimed in claim 2, wherein the isolation slot comprises a circular arc-shaped portion and an oblong portion located in the middle of the circular arc-shaped portion; and/or the support frame is also provided with a plurality of through holes which are arranged corresponding to the gaps between two adjacent metal spacing pieces in the plurality of metal spacing pieces.

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

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

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

a plurality of dynamic electrodes, wherein the first end of each dynamic electrode is provided with the second contact point, and the first end of each dynamic electrode can move up and down along the isolation groove;

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.

6. The power switch of claim 5, further comprising:

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 positioning bracket is pivoted on the bracket seat and is in matched contact with the second end of the positioning piece for positioning or loose contact;

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

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 positioning bracket, 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 first end of the positioning piece is in loose contact with the positioning part of the pressing block, the second end of the positioning piece is in loose contact with the positioning support, and the power switch is in a disconnected state.

7. The power switch of claim 6, wherein the second end of the first power electrode of the plurality of power electrodes is a hot wire connected to a power source, the second end of the second power electrode of the plurality of power electrodes is a neutral wire connected to the power source, and the second end of the third power electrode of the plurality of power electrodes is a ground wire connected to the power source.

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

the upper cover and the lower cover are assembled in a matched mode, an accommodating space is formed between the upper cover and the lower cover, the static electrodes, the dynamic electrodes, the power electrodes, the arc isolating cover, the support base, the positioning piece, the pressing block, the positioning support and the electrode springs are accommodated in the accommodating space, and a button opening is further formed in the upper cover and 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.