CN202084458U - Improved electric tool switch - Google Patents
Improved electric tool switch Download PDFInfo
- Publication number
- CN202084458U CN202084458U CN2011201248190U CN201120124819U CN202084458U CN 202084458 U CN202084458 U CN 202084458U CN 2011201248190 U CN2011201248190 U CN 2011201248190U CN 201120124819 U CN201120124819 U CN 201120124819U CN 202084458 U CN202084458 U CN 202084458U
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- CN
- China
- Prior art keywords
- electric tool
- positive terminal
- tool switch
- contact
- operatively connected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an improved electric tool switch comprising an operation connecting rod, a returning spring, a braking contact pad, a positive terminal and a through static contact, wherein one end of the returning spring props against and is connected with the through static contact, the other end of the returning spring props against and is connected with the operation connecting rod, the braking contact pad is arranged on the operation connecting rod and contacted with the returning spring, the positive terminal is arranged at the upper end of the braking contact pad, and when the operation connecting rod resets under the action of the returning spring, the braking contact pad props against and is contacted with the positive terminal. The improved electric tool switch has the advantages of simple structure, simple and convenient assembly, low manufacturing cost and good functional stability.
Description
Technical field:
The utility model relates to the electric tool switch of a kind of switch, particularly a kind of improvement.
Background technology:
Because inertia can be rotated further, reach anxious purpose of stopping when direct current machine is shut down, the magnetic field residual current of direct current machine must be run out of rapidly and just can reach anxious purpose of stopping.At present, the electric tool switch of prior art, mainly by being operatively connected bar 1, back-moving spring 2, brake contact 3, brake shell fragment 8, contact chip 7, positive terminal 4 and straight-through fixed contact 5 constitute, wherein, brake contact 3 is connected with contact chip 7 by brake shell fragment 8, because contact chip 7 is riveted together with straight-through fixed contact 5, the contact 3 that promptly brakes links to each other with straight-through fixed contact 5, so when being operatively connected bar 1 and under the effect of back-moving spring 2, resetting, brake contact 3 offsets with positive terminal 4 and contacts, make short circuit between the both positive and negative polarity, and reach anxious purpose of stopping by the magnetic field residual current that the switch inner member consumes motor rapidly.The shortcoming of this electric tool switch is: 1, functional stabilization is poor.2, parts are various, cause the raising of its complex structure and cost of manufacture.Therefore be necessary to be improved.
The utility model content:
The purpose of this utility model is to overcome the deficiency of above-mentioned prior art, and a kind of simple in structure, assembling is easy, cost of manufacture is cheap and functional stabilization is good electric tool switch is provided.
In order to realize the foregoing invention purpose, the utility model has adopted following technical scheme:
A kind of electric tool switch of improvement, comprise and be operatively connected bar, back-moving spring, brake contact, positive terminal and straight-through fixed contact, described back-moving spring one end is replaced with described straight-through fixed contact and is connected, the other end is replaced and is connected with the described bar that is operatively connected, described brake contact is installed in described being operatively connected on the bar and also contacts with described back-moving spring simultaneously, described positive terminal is arranged on the upper end of described brake contact, be operatively connected when resetting under the effect of bar at described back-moving spring when described, described brake contact offsets with described positive terminal and contacts.
The utility model has following advantage with respect to prior art after adopting technique scheme:
After element contact chip in the electric tool switch of prior art and brake shell fragment are saved, electric tool switch after the improvement can also reach the effect the same with the prior art electric tool switch, and functional stabilization is better, and the electric tool switch after therefore improving is simple in structure, assembling is easy, cost of manufacture is cheap.
Description of drawings:
Fig. 1 is the perspective view of prior art electric tool switch.
Fig. 2 is a perspective view of the present utility model.
Embodiment:
The following stated only is preferred embodiment of the present utility model, does not therefore limit protection range of the present utility model.
Referring to Fig. 2, the electric tool switch of a kind of improvement that provides according to the utility model, comprise and be operatively connected bar 1, back-moving spring 2, brake contact 3, positive terminal 4 and straight-through fixed contact 5, back-moving spring 2 one ends are replaced with straight-through fixed contact 5 and are connected, the other end be operatively connected bar 1 and replace and be connected, described brake contact 3 is installed in to be operatively connected on the bar 1 and also contacts with back-moving spring 2 simultaneously, positive terminal 4 is arranged on the upper end of brake contact 3, when being operatively connected bar 1 and resetting under the effect of back-moving spring 2, brake contact 3 offsets with positive terminal 4 and contacts.Straight-through fixed contact 5 is equivalent to negative pole in switch.
Operation principle of the present utility model is: when being operatively connected bar 1 and resetting under the effect of back-moving spring 2, brake contact 3 offsets with positive terminal 4 and contacts, thereby short circuit between the both positive and negative polarity consumes the magnetic field residual current of motor rapidly by the switch inner member, reaches anxious purpose of stopping.When being operatively connected bar 1 when pressing down, brake contact 3 disconnects with positive terminal 4, be operatively connected bar 1 again when pressing down movable contact spring begin action, power connection, thus guarantee that switch can be because of the short circuit of misoperation proximity switch.
The foregoing description is only for the usefulness that the utility model is described; and be not to restriction of the present utility model; the those of ordinary skill in relevant technologies field; under the situation that does not break away from spirit and scope of the present utility model; can also make various variations and modification; therefore all technical schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be limited by each claim.
Claims (1)
1. the electric tool switch of an improvement, it is characterized in that: comprise being operatively connected bar (1), back-moving spring (2), brake contact (3), positive terminal (4) and straight-through fixed contact (5), described back-moving spring (2) one ends are replaced with described straight-through fixed contact (5) and are connected, the other end is replaced and is connected with the described bar (1) that is operatively connected, described brake contact (3) is installed in the described bar (1) that is operatively connected and upward also contacts with described back-moving spring (2) simultaneously, described positive terminal (4) is arranged on the upper end of described brake contact (3), when being operatively connected bar (1) and resetting under the effect of described back-moving spring (2), described brake contact (3) offsets with described positive terminal (4) and contacts when described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201248190U CN202084458U (en) | 2011-04-26 | 2011-04-26 | Improved electric tool switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201248190U CN202084458U (en) | 2011-04-26 | 2011-04-26 | Improved electric tool switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202084458U true CN202084458U (en) | 2011-12-21 |
Family
ID=45345080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201248190U Expired - Fee Related CN202084458U (en) | 2011-04-26 | 2011-04-26 | Improved electric tool switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202084458U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105336533A (en) * | 2015-11-13 | 2016-02-17 | 乐清市风速开关厂 | Dustproof alternating-current speed regulation switch |
-
2011
- 2011-04-26 CN CN2011201248190U patent/CN202084458U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105336533A (en) * | 2015-11-13 | 2016-02-17 | 乐清市风速开关厂 | Dustproof alternating-current speed regulation switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: YONGKANG CHUANMU ELECTRIC APPLIANCE CO., LTD. Free format text: FORMER OWNER: YONGKANG CHANGDA ELECTRICAL ACCESSORIES FACTORY Effective date: 20120831 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120831 Address after: 321300 flower village, Chengxi District, Yongkang, Zhejiang Patentee after: Yongkang Kawasaki Electric Appliance Co., Ltd. Address before: 321300 Zhejiang Province, Yongkang City West District Jade Road 20 Patentee before: Yongkang Changda Electrical Appliance Fittings Factory |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111221 Termination date: 20160426 |