CN2080112U - Automatic stop device for electric fan when touching the cover - Google Patents
Automatic stop device for electric fan when touching the cover Download PDFInfo
- Publication number
- CN2080112U CN2080112U CN 90220693 CN90220693U CN2080112U CN 2080112 U CN2080112 U CN 2080112U CN 90220693 CN90220693 CN 90220693 CN 90220693 U CN90220693 U CN 90220693U CN 2080112 U CN2080112 U CN 2080112U
- Authority
- CN
- China
- Prior art keywords
- electric fan
- self
- control safety
- collector electrode
- connect
- 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.)
- Withdrawn
Links
Images
Landscapes
- Control Of Positive-Displacement Air Blowers (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
The utility model belongs to a safety automatic control system used for an electric fan. The existing safety automatic control system for the electric fan only has a gravity balance type. The electric fan can automatically cut off the power supply when falling down immodestly, however, the accident caused by the inertia of the blades after the switching-off is uncontrollable. The utility model adopts a touch-type safety automatic control system so that the power supply can be automatically cut off when the electric fan falls down and the hands touch the net cover; a braking circuit is started to force the motor to stop, which avoids the inertia blade hurting the hands. The safety automatic control system used for an electric fan is especially effective for protecting the child safety.
Description
The utility model belongs to a kind of safety auto-controlled device that is used for electric fan.
The rarely seen a kind of Weight-balancing type of the safety auto-controlled device of existing electric fan; when falling down accidentally, electric fan can cut off the electricity supply automatically; but it is then uncontrollable for the accident that outage rear blade inertia may cause; and this safety auto-controlled device only just works when electric fan is fallen down; during for normal operation, staff touches the injury that is caused in (especially children) electric fan guard accidentally and then has no the safety protection effect.
The purpose of this utility model is at above deficiency, develops the safety auto-controlled device of a kind of electric fan reliable and stable, that can both play a protective role in all cases, and need not additional special break.
Solution of the present utility model is started with from two aspects.At first, utilize the break-make of simple electronic touch switching circuit control fan power, make no matter to be the electric fan overturning or to touch guard and all can cut off the electricity supply reliably, secondly, when cutting off the electricity supply, the industrial-frequency alternating current behind the rectifying and wave-filtering is sent into motor, form a stationary magnetic field, braking motor makes the rapid stall of blade.After unsafe factor was eliminated, the electronic touch switch returned to normal automatically, and electric fan runs well.
Fig. 1 is an electrical schematic diagram of the present utility model.
Best enforcement of the present utility model will be described in conjunction with the accompanying drawings.
With reference to Fig. 1, BG
1, BG
2, BG
3, D
1, R
1, R
2, R
3, R
4, C
1, C
2, J forms the typical electronic touch switch circuit.D
2, D
3-D
6, C
3, C
4The power supply circuits of forming electronic switch.D
7, C
5Form the stalling current circuit.J
1, J
2Be normality and braking state changeover contact.Motor M is in normal operation among Fig. 1.When touching R
1Free end is when (linking to each other with the electric fan guard), BG
1Conducting makes composite pipe BG
2, BG
3Saturated rapidly, relay J adhesive, normally-closed contact J
2Disconnection, motor M dead electricity, normally opened contact J
1Closure, braking motor M makes the fan stall.After touch signal was removed, relay J discharged, J
1, J
2Reply normality, electric fan runs well.
The utility model is simple in structure, stable performance, and safe ready, in the electric fan of not only can packing into, but also independent finished products.Market potential is very big.
Claims (5)
1, the self-control safety device used of a kind of electric fan is formed by touching electronic switching circuit and electric fan braking circuit etc., it is characterized in that utilizing the normally-closed contact J of relay J
2With normally opened contact J
1Make to touch electronic switch when cutting off fan power, connect the braking circuit of electric fan.
2, by the described electric fan self-control safety of claim 1 device, it is characterized in that touching electronic switch by BG
1, BG
2, BG
3, D
1, R
1, R
2, R
3, R
4, composition such as J.Touch signal passes through R
1Receive BG
1Base stage, BG
1Emitter pass through R
2Connect power supply, its collector electrode passes through R
3Ground connection, BG
1Collector electrode is directly linked BG
2Base stage, BG
2Emitter and BG
3Base stage directly links to each other and passes through R
4Ground connection, BG
3Emitter passes through D
1Ground connection, its collector electrode and BG
2Collector electrode links to each other and connects power supply by relay J.
3, by the described electric fan self-control safety of claim 1 device, it is characterized in that the electric fan braking circuit is by D
7, C
5, J
1, J
2Form.D
7Positive pole and normally-closed contact J
2Stator connect 220V Ac one end, D after linking to each other
7Negative pole meets C
5Anodal back and normally opened contact J
1Stator links to each other, two contact J
1, J
2Moving plate connect electric fan M one end, the other end of electric fan M and C after linking to each other
5After linking to each other, negative pole connects the other end of 220V Ac.
4, by the described electric fan self-control safety of claim 1 device, it is characterized in that obtaining after stalling current is by the industrial-frequency alternating current rectifying and wave-filtering.
5,, it is characterized in that braking process carried out by electric fan M itself by the described electric fan self-control safety of claim 1 device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90220693 CN2080112U (en) | 1990-09-14 | 1990-09-14 | Automatic stop device for electric fan when touching the cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90220693 CN2080112U (en) | 1990-09-14 | 1990-09-14 | Automatic stop device for electric fan when touching the cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2080112U true CN2080112U (en) | 1991-07-03 |
Family
ID=4899079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90220693 Withdrawn CN2080112U (en) | 1990-09-14 | 1990-09-14 | Automatic stop device for electric fan when touching the cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2080112U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100350157C (en) * | 2003-03-19 | 2007-11-21 | 深圳市联创实业有限公司 | Method for stopping rotation by touching fan and product |
| CN102506024A (en) * | 2011-10-12 | 2012-06-20 | 鲁东大学 | Electric fan circuit with second-level protection function |
| CN107503962A (en) * | 2017-08-14 | 2017-12-22 | 苏州市百川设备工程有限公司 | Industrial big fan |
-
1990
- 1990-09-14 CN CN 90220693 patent/CN2080112U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100350157C (en) * | 2003-03-19 | 2007-11-21 | 深圳市联创实业有限公司 | Method for stopping rotation by touching fan and product |
| CN102506024A (en) * | 2011-10-12 | 2012-06-20 | 鲁东大学 | Electric fan circuit with second-level protection function |
| CN107503962A (en) * | 2017-08-14 | 2017-12-22 | 苏州市百川设备工程有限公司 | Industrial big fan |
| CN107503962B (en) * | 2017-08-14 | 2019-07-02 | 苏州市百川设备工程有限公司 | Industrial big fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |