CN204327555U - Electric fan is anti-touches automatic stopping circuit - Google Patents
Electric fan is anti-touches automatic stopping circuit Download PDFInfo
- Publication number
- CN204327555U CN204327555U CN201420774949.2U CN201420774949U CN204327555U CN 204327555 U CN204327555 U CN 204327555U CN 201420774949 U CN201420774949 U CN 201420774949U CN 204327555 U CN204327555 U CN 204327555U
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- relay
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Abstract
A kind of fan is anti-touches automatic stop arrangement, be made up of main circuit, control circuit, this main circuit is made up of motor M and relay K A normally-closed contact KA3, when normally-closed contact closes, motor can normally work, control circuit is made up of triode VT, thyristor V, auxiliary reclay KA, resistance R1, R2, R3, R4 and electric fan metal net mask P, this braking circuit is made up of electric capacity C, diode VD and auxiliary reclay normally opened contact KA2, when the hand of people touches electric fan metal covering, cut off the electricity supply, make rapidly motor brake M stall, play the effect of guarantee.
Description
Technical field
The utility model relates to a kind of safety protection circuit, and specifically, being that a kind of electric fan is anti-touches automatic stopping circuit.
Background technique
Electric fan has been the prevailing electrical equipment of ordinary family functions of relieving summer heat, antithermic in summer, although fan leaf outer installment shelter-clad, can there are children to cause the case of injury to occur because finger is injected fan by curiosity every year.So increase safety protection device to fan and be necessary very much, electric fan on the market also has and carries this function at present, but all cost is higher.
Summary of the invention
The purpose of this utility model is to provide the anti-tactile automatic stop arrangement of a kind of electric fan, when staff touches electric fan metal covering, cuts off the electricity supply, and carries out dynamic braking to motor, make it to shut down in very short time, and cost is lower.
In order to achieve the above object, the utility model is by the following technical solutions:
A kind of fan is anti-touches automatic stop arrangement, is made up of, it is characterized in that main circuit, control circuit:
Described main circuit, comprise the normally-closed contact KA3 of motor M and contact relay KA, one end 5 of motor M connects with 220 volts of Ac one end X, the normally-closed contact KA3 of one end 3, relay K A of the normally-closed contact KA3 of the other end 6 contact relay KA of motor M the other end connect with the other end Y of 220 volts of Ac;
Described control circuit, comprise triode VT, thyristor V, relay K A, resistance R1, R2, R3, R4 and electric fan metal net mask P, electric fan metal net mask P is connected with the base stage of triode VT through a resistance R1, the emitter of triode VT is connected with the other end Y of 220 volts of Ac by resistance R2, the emitter of triode VT is also direct to be extremely connected with the control pole G of thyristor, the collector electrode of triode VT is connected with 220 volts of Ac one end X by resistance R4, and the collector electrode of triode VT is connected with 220 volts of Ac one end Y by resistance R3;
One end 2 of the normally opened contact KA2 of relay K A is connected with one end 6 of motor M, the normally opened contact KA2 the other end 1 of relay K A is connected with the negative pole of electric capacity C, the normally opened contact KA2 the other end 1 of relay K A is also connected with the positive pole of diode VD, the negative pole of diode VD connects with the other end Y of 220 volts of Ac, and the positive pole of electric capacity C connects with 220 volts of Ac one end X.
Beneficial effect
The beneficial effects of the utility model are: circuit design is simple, working stability, convenient and practical.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model will be further described.
The working principle of this model utility: after switching on power, when no one touches metal net mask P, triode VT (3DK106) ends, thyristor V (KP1A) turns off, relay K A (522 type) is in releasing state, normally-closed contact KA3 closes, motor M normally works, 220V Ac charges to electric capacity C (CD11) through diode VD (1N4004), for motor M braking is prepared, when people touches electric fan metal net mask P, induced signal is through resistance R1(fixed carbon resister 1.2 M) be added in the base stage of triode VT (3DK106), make its conducting, and at resistance R2(metal film resister 1.5K) on produce voltage drop, thyristor V (KP1A) conducting, relay K A (522 type) obtains electric adhesive, normally-closed contact KA3 disconnects, cut off motor power, its normally opened contact KA2 closes, upper for electric capacity C (CD11) VDC is added on motor stator, and produce DC electric field at staor winding, make rapidly motor brake M stall, protection finger is not by fan blade cut wound.
Claims (1)
1. electric fan is anti-touches an automatic stopping circuit, is made up of, it is characterized in that main circuit, control circuit:
Described main circuit, comprise the normally-closed contact KA3 of motor M and contact relay KA, one end (5) of motor M connects with 220 volts of Ac one end (X), one end (3) of the normally-closed contact KA3 of the other end (6) the contact relay KA of motor M, the normally-closed contact KA3 of relay K A the other end connect with the other end (Y) of 220 volts of Ac;
Described control circuit, comprise triode VT, thyristor V, relay K A, resistance R1, R2, R3, R4 and electric fan metal net mask P, electric fan metal net mask P is connected with the base stage of triode VT through a resistance R1, the emitter of triode VT is connected with the other end (Y) of 220 volts of Ac by resistance R2, the emitter of triode VT is also direct to be extremely connected with the control pole G of thyristor, the collector electrode of triode VT is connected with 220 volts of Ac one end (X) by resistance R4, and the collector electrode of triode VT is connected with 220 volts of Ac one end (Y) by resistance R3;
One end (2) of the normally opened contact KA2 of relay K A is connected with one end (6) of motor M, the normally opened contact KA2 the other end (1) of relay K A is connected with the negative pole of electric capacity C, the normally opened contact KA2 the other end (1) of relay K A is also connected with the positive pole of diode VD, the negative pole of diode VD connects with the other end (Y) of 220 volts of Ac, and the positive pole of electric capacity C connects with 220 volts of Ac one end (X).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420774949.2U CN204327555U (en) | 2014-12-11 | 2014-12-11 | Electric fan is anti-touches automatic stopping circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420774949.2U CN204327555U (en) | 2014-12-11 | 2014-12-11 | Electric fan is anti-touches automatic stopping circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204327555U true CN204327555U (en) | 2015-05-13 |
Family
ID=53163922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420774949.2U Expired - Fee Related CN204327555U (en) | 2014-12-11 | 2014-12-11 | Electric fan is anti-touches automatic stopping circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204327555U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832447A (en) * | 2015-05-26 | 2015-08-12 | 苏州达泰佳机械科技有限公司 | Finger touch alarming circuit of electric fan |
| CN106740562A (en) * | 2016-12-28 | 2017-05-31 | 北京维博信通科技有限公司 | Electronics reversing supplementary controlled system |
-
2014
- 2014-12-11 CN CN201420774949.2U patent/CN204327555U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832447A (en) * | 2015-05-26 | 2015-08-12 | 苏州达泰佳机械科技有限公司 | Finger touch alarming circuit of electric fan |
| CN106740562A (en) * | 2016-12-28 | 2017-05-31 | 北京维博信通科技有限公司 | Electronics reversing supplementary controlled system |
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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: 20150513 Termination date: 20151211 |
|
| EXPY | Termination of patent right or utility model |