CN203179737U - Starting switch for electric tool - Google Patents
Starting switch for electric tool Download PDFInfo
- Publication number
- CN203179737U CN203179737U CN 201320101495 CN201320101495U CN203179737U CN 203179737 U CN203179737 U CN 203179737U CN 201320101495 CN201320101495 CN 201320101495 CN 201320101495 U CN201320101495 U CN 201320101495U CN 203179737 U CN203179737 U CN 203179737U
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- China
- Prior art keywords
- power supply
- input terminal
- supply input
- contact
- fly
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- 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 a starting switch for an electric tool, which comprises a housing that is made of insulating material. The housing is provided with the following components: an anode power supply input terminal, a cathode power supply input terminal, a first output terminal and a second output terminal. The housing is internally provided with a contact switching-off mechanism; the contact switching-off mechanism comprises a straight through static contact sheet. A freewheeling diode conductor is provided between the straight through static contact sheet and the anode power supply input terminal. The starting switch for the electric tool is characterized in that: a mounting space with certain elasticity is formed between the straight through static contact sheet and the anode power supply input terminal; the freewheeling diode is inserted into and clamped in the mounting space; one pole of the freewheeling diode is in conduction contact with the straight through static contact sheet, and the other pole is in conduction contact with the anode power supply input terminal. When the freewheeling diode is mounted, insertion into the mounting space is required. Therefore no welding tool is required by the switch for assembling the freewheeling diode, thereby greatly reducing assembling difficulty and simultaneously preventing melting by long-time high temperature in housing welding.
Description
Technical field
The utility model relates to a kind of starting switch for electric tool, and electric tool can be criticized and electric mill etc. for electric drill, electric saw, electric screw.
Background technology
Be power with the motor, the mechanized tool that drives the working head action by transmission mechanism is electric tool.Common electric tool has electric drill, electric saw, electric screw to criticize and electric mill etc.Electric tool generally adopts hand to grip operation, realizes that by starting switch electric tool starts, stops and the rotating speed adjustment.The starting switch of existing electronic basis generally comprises the shell that the insulation material makes and places conductive mechanism, contact disjunction mechanism, speed-regulating control circuit, rotating changement and brake protection mechanism in the shell.
Be a kind of electric tool switch the Chinese invention patent " electric tool switch " of ZL201010274964.7 (publication number is CN102403155A) has disclosed as an application number, comprise shell, shell just is provided with, negative power supply input terminal and first, second lead-out terminal, establish contact disjunction mechanism and speed-regulating control circuit plate in the shell, contact disjunction mechanism comprises manual control lever, speed governing moving contact and straight-through moving contact, the trailing flank of manual control lever is provided with two downward-sloping first, the second wedge shape boss, two moving contacts are separately positioned on the negative power supply input terminal, the lower end is relative with straight-through static contact with the speed governing fixed contact respectively, and the upper end is respectively with first, the second wedge shape boss is relative; The speed-regulating control circuit plate is provided with the speed governing chip, the negative power supply input terminal is communicated with second output by the dynamic and static contact of speed governing and power tube (also being fly-wheel diode) on the one hand, be communicated with second output by straight-through dynamic/static contact on the other hand, the cathode power supply input terminal is communicated with first lead-out terminal.
Similarly the patent of electric tool switch is disclosed has a lot, and the power tube (also being fly-wheel diode) in the starting switch of existing electric tool is first-hand usually to be welded on cathode power supply input terminal and the straight-through static contact by solder stick.Aforementioned structure has the following disadvantages: 1, be general all make less of compact conformation, housing intracavity space of guaranteeing the starting switch of electric tool, when the assembler uses soldering appliance the two ends of fly-wheel diode are welded on cathode power supply input terminal and the straight-through static contact, operating difficulties, repair and replacement are also inconvenient.2, solder stick will just begin fusing usually under the temperature of 300 degree, and so high temperature is long-time with after housing contacts, and housing easily melts.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of starting switch for electric tool at above-mentioned prior art present situation, and this starting switch can assemble fly-wheel diode quickly and easily, also is convenient for changing fly-wheel diode in addition.
The utility model solves the problems of the technologies described above the technical scheme that adopts: a kind of starting switch for electric tool, the housing that comprises the material that insulate, housing is provided with the cathode power supply input terminal, the negative power supply input terminal, first lead-out terminal and second lead-out terminal, be provided with contact disjunction mechanism in the housing, positive and reverse steering mechanism and speed regulating control wiring board, described contact disjunction mechanism comprises straight-through static contact, should lead directly between static contact and the described cathode power supply input terminal and be provided with the fly-wheel diode conducting, it is characterized in that: formation has certain flexible installing space between described straight-through static contact and the cathode power supply input terminal, described fly-wheel diode inserts and is clamped in the described installing space, one utmost point of fly-wheel diode contacts with described straight-through static contact conducting, and another utmost point of fly-wheel diode contacts with the conducting of described cathode power supply input terminal.
Further improve, a side of the contiguous cathode power supply input terminal of above-mentioned straight-through static contact has the bending of extending upward and is inverted U-shaped elastic foot, and the gap between described elastic foot and the cathode power supply input terminal forms described installing space.Elastic foot has the elastic force of certain cathode power supply input terminal direction, and the pretension elastic force by elastic foot can be clamped in fly-wheel diode in the installing space more securely.
Form first contact of projection on the side of above-mentioned elastic foot, form second contact of projection on the described cathode power supply input terminal respective side, described first contact and second contact separation over against, one utmost point of described fly-wheel diode contacts with first contact, and another utmost point of fly-wheel diode contacts with second contact.The contact is set can guarantee that fly-wheel diode conducts electricity with the cathode power supply input terminal more fully with straight-through static contact and contact.
Compared with prior art, advantage of the present utility model is: this is used for, and formation has certain flexible installing space between straight-through static contact and the cathode power supply input terminal of starting switch of electric tool, fly-wheel diode inserts and is clamped in the installing space, and conducting contacts with the cathode power supply input terminal with straight-through static contact respectively, fly-wheel diode only need insert in the installing space when installing and get final product, therefore this switch need not soldering appliance and assembles fly-wheel diode, reduce assembly difficulty greatly, avoid simultaneously because the housing welding brings long-time high temperature the phenomenon of fusing taking place.
Description of drawings
Fig. 1 is the back side perspective view of the utility model embodiment;
Fig. 2 is the perspective view of the utility model embodiment;
Fig. 3 removes positive perspective view behind speed governing wiring board and the fly-wheel diode for the utility model embodiment;
Fig. 4 is the assembling schematic diagram of fly-wheel diode among the utility model embodiment.
Embodiment
Describe in further detail below in conjunction with the utility model of accompanying drawing embodiment.
Shown in Fig. 1～4, be a preferred embodiment of the present utility model.
A kind of starting switch for electric tool, the housing 1 that comprises the material that insulate, housing 1 is provided with cathode power supply input terminal 2, negative power supply input terminal 3, first lead-out terminal 4 and second lead-out terminal 5, be provided with contact disjunction mechanism in the housing 1, positive and reverse steering mechanism 6 and speed regulating control wiring board 7, contact disjunction mechanism comprises straight-through static contact 8, certainly also include button 11 switch driven assemblies 12, should lead directly between static contact 8 and the described cathode power supply input terminal 2 and be provided with fly-wheel diode 9 conductings, more than be the conventional structure of the starting switch of electric tool, can be with reference to prior art and background patents, state in that this no longer expansion information is tired.
Main improvement of the present utility model is: formation has certain flexible installing space 10 between straight-through static contact 8 and the cathode power supply input terminal 2, fly-wheel diode 9 inserts and is clamped in the installing space 10, one utmost point of fly-wheel diode 9 contacts with straight-through static contact 8 conductings, and another utmost point of fly-wheel diode 9 contacts with described cathode power supply input terminal 2 conductings.
One side of straight-through static contact 8 contiguous cathode power supply input terminals 2 has the bending of extending upward and is inverted U-shaped elastic foot 81, and the gap between elastic foot 81 and the cathode power supply input terminal 2 forms installing space 10.
Form first contact 811 of projection on the side of elastic foot 81, form second contact 21 of projection on cathode power supply input terminal 2 respective side, first contact 811 and second contact 21 at interval over against, one utmost point of fly-wheel diode 9 contacts with first contact 811, and another utmost point of fly-wheel diode 9 contacts with second contact 21.
The installing space 10 that fly-wheel diode 9 only need insert between straight-through static contact 8 and the cathode power supply input terminal 2 when installing gets final product, resilient clamp power by installing space 10 is clamped in fly-wheel diode 9 between straight-through static contact 8 and the cathode power supply input terminal 2, installs very convenient.
Claims (3)
1. starting switch that is used for electric tool, the housing (1) that comprises the material that insulate, housing (1) is provided with cathode power supply input terminal (2), negative power supply input terminal (3), first lead-out terminal (4) and second lead-out terminal (5), be provided with contact disjunction mechanism in the housing (1), positive and reverse steering mechanism (6) and speed regulating control wiring board (7), described contact disjunction mechanism comprises straight-through static contact (8), should lead directly between static contact (8) and the described cathode power supply input terminal (2) and be provided with fly-wheel diode (9) conducting, it is characterized in that: formation has certain flexible installing space (10) between described straight-through static contact (8) and the cathode power supply input terminal (2), described fly-wheel diode (9) inserts and is clamped in the described installing space (10), one utmost point of fly-wheel diode (9) contacts with described straight-through static contact (8) conducting, and another utmost point of fly-wheel diode (9) contacts with described cathode power supply input terminal (2) conducting.
2. the starting switch for electric tool according to claim 1, it is characterized in that: a side of the contiguous cathode power supply input terminal of described straight-through static contact (8) (2) has the bending of extending upward and is inverted U-shaped elastic foot (81), and the gap between described elastic foot (81) and the cathode power supply input terminal (2) forms described installing space (10).
3. the starting switch for electric tool according to claim 1, it is characterized in that: first contact (811) that forms projection on the side of described elastic foot (81), form second contact (21) of projection on described cathode power supply input terminal (2) respective side, described first contact (811) and second contact (21) at interval over against, one utmost point of described fly-wheel diode (9) contacts with first contact (811), and another utmost point of fly-wheel diode (9) contacts with second contact (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320101495 CN203179737U (en) | 2013-03-06 | 2013-03-06 | Starting switch for electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320101495 CN203179737U (en) | 2013-03-06 | 2013-03-06 | Starting switch for electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203179737U true CN203179737U (en) | 2013-09-04 |
Family
ID=49076400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320101495 Expired - Fee Related CN203179737U (en) | 2013-03-06 | 2013-03-06 | Starting switch for electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203179737U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985580A (en) * | 2014-05-16 | 2014-08-13 | 常熟精微康电子元件有限公司 | Switch |
-
2013
- 2013-03-06 CN CN 201320101495 patent/CN203179737U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985580A (en) * | 2014-05-16 | 2014-08-13 | 常熟精微康电子元件有限公司 | Switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20130904 Termination date: 20160306 |