CN201007962Y - Electric tools speed regulation switch - Google Patents
Electric tools speed regulation switch Download PDFInfo
- Publication number
- CN201007962Y CN201007962Y CNU2006201259635U CN200620125963U CN201007962Y CN 201007962 Y CN201007962 Y CN 201007962Y CN U2006201259635 U CNU2006201259635 U CN U2006201259635U CN 200620125963 U CN200620125963 U CN 200620125963U CN 201007962 Y CN201007962 Y CN 201007962Y
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- CN
- China
- Prior art keywords
- contact
- motor
- trigger
- switch
- controllable silicon
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Abstract
The utility model discloses an electro motion tool speed governing switch, which comprises a trigger connected with a switch body, a motor, a push rod, a redirector, and a control circuit, wherein the redirector is provided with five contacts, the contact 5 is respectively electrically connected with the contact 6 and the contact 9 and is connected with the switch K<2>, the contact 6 and the contact 7 are respectively connected with the motor rotor winding, the contact 7 and the contact 8 are in series connection with each other and then connected with the motor stator winding, the contact 9 is respectively connected with A terminal of the controllable silicon BTA and the tunable resistance R<3>, the control circuit comprises a controllable silicon BTA, two switches K<1>, K<2>, a rephrasing trigger circuit, three tunable resistances R<1>, R<2> and R<3>, three diodes A<4>, D<1> and D<2>, three resistances R<4>, R<5> and R<6>, and a trigger tube DB<3>. The utility model has inverse speed limit function and the forward and reverse rotating speed can be set freely. The steeples speed regulation is simple and convenient and precludes error of motor being burnt when rotating reversely is eliminated. The utility model has good operation hand feeling and perfect mass production consistency, which is widely employed for kinds of electro motion tools.
Description
Technical field
The utility model relates to a kind of switch, specifically a kind of speed-regulating switch that is used for the reverse speed limit performance of having of electric tool.
Background technology
Electric tools such as electric drill commonly used, electric hammer, percussion drill, requiring its speed-regulating switch is stepless speed regulation.This class series excitation type alternating current machine has two stator winding and a rotor winding.When motor reverses, be subjected to the influence of its physical property, the rotor winding can produce great spark under same rated voltage, the rotor winding is burnt out very soon, disturbs the normal use of other electrical equipment in the electrical network simultaneously, therefore, must carry out reverse speed limit to electric tool.Existing electric tool speed-regulating switch adds a guide vane end stop usually on the reverse position of trigger and steering gear, be pressed onto the final position to stop trigger.The general mirror operation feel of user is poor, runs counter to habitual using method.For batch process, every speed-regulating switch is difficult to assemble identically, so the bulk article consistency is relatively poor, and difficult quality improves.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of electric tool speed-regulating switch with reverse speed limit performance, bulk article high conformity.
For solving the problems of the technologies described above, electric tool speed-regulating switch of the present utility model comprises trigger, motor, push rod, steering gear, the control circuit that is connected with switch body, its improvement is: described steering gear is provided with five contacts, wherein, contact 5 electrically connects with contact 6,9 respectively, and with described K switch
2Join, described contact 6,7 connects the rotor winding of motor respectively, and 7,8 series connection backs, described contact link to each other with the stator winding of motor, and hold with the A of controllable silicon BTA respectively described contact 9, adjustable resistance R
3Link to each other.
As a kind of improvement of the present utility model, described control circuit comprises controllable silicon BTA, K switch
1, K
2, phase-shift trigger circuit, adjustable resistance R
1, R
2, R
3, diode A
4, diode D
1, D
2, resistance R
4～R
6, trigger tube DB
3
As a kind of improvement of the present utility model, described adjustable resistance R
3One end links to each other its other end and resistance R with the A end of controllable silicon BTA
5, diode D
2Series connection; Described phase-shift trigger circuit is by resistance R
1, capacitor C, trigger tube DB
3Form.
After adopting said structure, place positive transposition to put on the handle of steering gear 10, press trigger 2, K switch
1Closure, the 230V alternating current is through K switch
1, motor 3 stator winding 3-1 conducting controllable silicon BTA, the contact in the steering gear 10 9,6 connect, electric current is connected another stator winding 3-3 of motor 3 behind the rotor winding 3-2 of motor 3, contact 7,8 in the steering gear 10, motor 3 is just changeing.At this moment, along with trigger 2 gradually to pressing down, with the resistance R of this trigger synchronization action
1Resistance is more and more littler, and the angle of flow of controllable silicon BTA is increasing, and motor 3 rotating speeds are more and more higher, reach infinitely variable speeds.When trigger 2 is pressed onto the final position, K switch
2Closure, silicon controlled A, K two ends are by K switch
2Short circuit, alternating current is through K switch
1, the stator winding 3-1 of motor 3, K switch
2, the contact 5,6 in the steering gear 10, motor 3 rotor winding 3-2, the contact 7,8 in the steering gear 10 after, connect another stator winding 3-3 of motor 3, at this moment, electric tool is exchanging forward running under the 230V full voltage.When the need electric tool reversed, then the handle with steering gear 10 placed backward position, pressed trigger 2, K switch
1Closure, alternating current is through stator winding 3-1, the controllable silicon BTA of motor 3, rotor winding 3-2, another stator winding 3-3 of contact 6,8 flow direction motors 3 in the steering gear 10 of contact 9,7, motor 3 in the steering gear 10, motor 3 counter-rotatings.At this moment, along with trigger 2 presses down gradually, the controllable silicon BTA angle of flow is increasing, and the rotating speed of motor 3 will be more and more faster also, because has separated the contact 5,9 in the steering gear 10, has both made trigger 2 be pressed onto the final position, K switch
2Therefore closure also can't limit A, the K shorted on both ends of controllable silicon BTA electric tool and work under interchange 230V full voltage inverted status, plays good reverse speed limit effect, and has stopped to be burnt when motor reverses the generation of fault.Electric tool speed-regulating switch of the present utility model adopts the steering gear with five contacts, matches with control circuit, reaches reverse speed limit.Its simple in structure, dependable performance, positive and negative rotating speed can be provided with arbitrarily, and stepless speed regulation is easy, match operation custom, good hand touch.The electricity consumption gas control is produced traditional guide vane end stop mechanical type speed limit of generation, and it is good to produce consistency of product in batches, and quality obviously improves.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is the structural representation of a kind of electric tool speed-regulating switch of the present utility model.
Fig. 2 is the electric control theory figure of a kind of electric tool speed-regulating switch of the present utility model.
Embodiment
Referring to Fig. 1,2, electric tool speed-regulating switch of the present utility model, comprise the trigger 2, motor 3, push rod 4, steering gear 10, the control circuit 11 that are connected with switch body 1, its improvement is: described steering gear 10 is provided with five contacts, wherein, contact 5 electrically connects with contact 6,9 respectively, and with described K switch
2Join, described contact 6,7 connects the rotor winding 3-2 of motor 3 respectively, and 7,8 series connection backs, described contact link to each other with the stator winding 3-3 of motor 3, and hold with the A of controllable silicon BTA respectively described contact 9, adjustable resistance R
3Link to each other;
By the electric control theory figure of the electric tool speed-regulating switch shown in Fig. 2 as can be seen, described control circuit 11 comprises controllable silicon BTA, K switch
1, K
2, phase-shift trigger circuit, adjustable resistance R
1, R
2, R
3, diode A
4, diode D
1, D
2, resistance R
4～R
6, trigger tube DB
3
Referring to Fig. 2, described adjustable resistance R
3One end links to each other its other end and resistance R with the A end of controllable silicon BTA
5, diode D
2Series connection.Resistance R
1Be designed to a swept resistance with trigger 2 synchronization actions, it and capacitor C, trigger tube DB
3Form phase-shift trigger circuit, make trigger electrode g conducting under the trigger impulse effect of controllable silicon BTA.Adjustable resistance R
2, diode D
1, resistance R
4Be used for being provided with the initial angle of flow of controllable silicon BTA.Adjustable resistance R
3, resistance R
5, diode D
2Be used for being provided with the maximum conduction angle of controllable silicon BTA.Described resistance R
6, diode A
4Effect be to make controllable silicon BTA when the initial angle of flow, produce a DC component, to increase the torque of electric tool when the low speed.Diode A
4To select common cloudy diode for use is good.Motor 3 is selected the series excitation type alternating current machine for use.
Claims (4)
1. electric tool speed-regulating switch, comprise the trigger (2), motor (3), push rod (4), steering gear (10), the control circuit (11) that are connected with switch body (1), it is characterized in that: described steering gear (10) is provided with contact (5,6,7,8,9), wherein contact (5) electrically connect with contact (6.9) respectively, and with described K switch
2Join, described contact (6,7) connect the rotor winding (3-2) of motor (3) respectively, and described contact (7,8) series connection back links to each other with the stator winding (3-3) of motor (3), and hold with the A of controllable silicon BTA respectively described contact 9, adjustable resistance R
3Link to each other.
2. electric tool speed-regulating switch according to claim 1 is characterized in that: described control circuit (11) comprises controllable silicon BTA, K switch
1, K
2, phase-shift trigger circuit, adjustable resistance R
1, R
2, R
3, diode A
4, diode D
1, D
2, resistance R
4～R
6, trigger tube DB
3
3. electric tool speed-regulating switch according to claim 2 is characterized in that: described adjustable resistance R
3One end links to each other its other end and resistance R with the A end of controllable silicon BTA
5, diode D
2Series connection.
4. electric tool speed-regulating switch according to claim 2 is characterized in that: described phase-shift trigger circuit is by resistance R
1, capacitor C, trigger tube DB
3Form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201259635U CN201007962Y (en) | 2006-11-29 | 2006-11-29 | Electric tools speed regulation switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201259635U CN201007962Y (en) | 2006-11-29 | 2006-11-29 | Electric tools speed regulation switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201007962Y true CN201007962Y (en) | 2008-01-16 |
Family
ID=39003911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201259635U Expired - Fee Related CN201007962Y (en) | 2006-11-29 | 2006-11-29 | Electric tools speed regulation switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201007962Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122927A (en) * | 2014-08-07 | 2014-10-29 | 苏州市东科电子有限公司 | Method and system for repairing and regulating output voltage of silicon controlled voltage regulator circuit |
| CN106026838A (en) * | 2016-06-29 | 2016-10-12 | 颍上县田之都农业科技发展有限公司 | Bidirectional variable frequency control system |
| WO2020142894A1 (en) * | 2019-01-08 | 2020-07-16 | 深圳拓邦股份有限公司 | Electronic device, pcb board, and power tool |
| CN111765112A (en) * | 2020-07-14 | 2020-10-13 | 胡超 | Low-speed breeze stepless speed regulation electric fan speed regulation mechanism |
-
2006
- 2006-11-29 CN CNU2006201259635U patent/CN201007962Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122927A (en) * | 2014-08-07 | 2014-10-29 | 苏州市东科电子有限公司 | Method and system for repairing and regulating output voltage of silicon controlled voltage regulator circuit |
| CN104122927B (en) * | 2014-08-07 | 2016-01-20 | 苏州市东科电子有限公司 | Trim the method and system of silicon-controlled voltage regulation circuit output voltage |
| CN106026838A (en) * | 2016-06-29 | 2016-10-12 | 颍上县田之都农业科技发展有限公司 | Bidirectional variable frequency control system |
| WO2020142894A1 (en) * | 2019-01-08 | 2020-07-16 | 深圳拓邦股份有限公司 | Electronic device, pcb board, and power tool |
| CN111765112A (en) * | 2020-07-14 | 2020-10-13 | 胡超 | Low-speed breeze stepless speed regulation electric fan speed regulation mechanism |
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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 |
Granted publication date: 20080116 Termination date: 20151129 |