CN203500079U - Automatic stopping device of electric fan - Google Patents
Automatic stopping device of electric fan Download PDFInfo
- Publication number
- CN203500079U CN203500079U CN201320622045.3U CN201320622045U CN203500079U CN 203500079 U CN203500079 U CN 203500079U CN 201320622045 U CN201320622045 U CN 201320622045U CN 203500079 U CN203500079 U CN 203500079U
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- CN
- China
- Prior art keywords
- resistance
- diode
- triode
- electric fan
- relay
- 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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- Stopping Of Electric Motors (AREA)
Abstract
The utility model discloses an automatic stopping device of an electric fan. The automatic stopping device of the electric fan comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a relay, a motor, a first diode, a second diode, a capacitor, an audion and a thyristor. Compared with the prior art, the automatic stopping device of the electric fan is simple in circuit structure, low in cost, and capable of changing the sensitivity of the entire device by changing the resistance value of one resistor according to different conditions.
Description
Technical field
The utility model relates to a kind of automatic stop arrangement, relates in particular to a kind of automatic stop arrangement of electric fan.
Background technique
Electric fan is for heat radiation; family and factory have been widely used in now; especially in the workshop of factory; large-scale electric fan is the requisite heat radiation facility of workpeople in summer, and because the guard of electric fan exists gap, a lot of people understand and neglectful finger are placed in one; this is with regard to quite dangerous; so need a kind of electric fan automatic stop arrangement to protect people not come to harm, the automatic stop arrangement complex structure of electric fan now, price is relatively high.
Summary of the invention
The purpose of this utility model is the automatic stop arrangement that a kind of easy electric fan will be provided.
For achieving the above object, the utility model is implemented according to following technological scheme:
The utility model comprises the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, relay, motor, the first diode, the second diode, electric capacity, triode and thyristor, the input end of described motor is connected with the first end of described the second resistance with the live wire end of ac power supply simultaneously, the output terminal of described motor is connected with the first end of described relay normally-closed contact with the first end of described relay normally open contact simultaneously, the second end of described relay normally-closed contact is connected with the first end of described the first resistance and the zero line side of described ac power supply simultaneously, the second end of described relay normally open contact is connected with the negative pole of described the first diode with the first end of described electric capacity simultaneously, the second end while of described electric capacity and the second end of described the first resistance, the first end of described the 3rd resistance, described the 5th first end of resistance and the negative pole of described thyristor are connected, the anodal while of described the first diode and the second end of described the second resistance, described the 4th first end of resistance and the first end of described relay coil are connected, the second end of described the 3rd resistance is connected with the second end of described the 4th resistance with the collector electrode of described triode simultaneously, the second end of described the 5th resistance is connected with the control end of described thyristor and the emitter of described triode simultaneously, the positive pole of described thyristor is connected with the first end of described the 7th resistance, the second end of described the 7th resistance is connected with the negative pole of described the second diode, the positive pole of described the second diode is connected with the second end of described relay coil, the base stage of described triode is connected with the first end of described the 6th resistance, the second end of described the 6th resistance is connected with signal input part.
Further, described triode is NPN type.
Compared with prior art, the utility model circuit structure is simple, with low cost, and can be according to different situations by the change of one of them resistance being changed to the sensitivity of whole device.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described, in illustrative examples and the explanation of this model utility, is used for explaining the utility model, but not as to restriction of the present utility model.
As shown in Figure 1: the utility model comprises the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, relay J, motor M, the first diode D1, the second diode D2, capacitor C, triode V and thyristor VT, triode V is NPN type, the input end of motor M is connected with the first end of the second resistance R 2 with the live wire end of ac power supply simultaneously, the output terminal of motor M is connected with the first end of relay J normally-closed contact J2 with the first end of relay J normally opened contact J1 simultaneously, the second end of relay J normally-closed contact J2 is connected with first first end of resistance R 1 and the zero line side of ac power supply simultaneously, the second end of relay J normally opened contact J1 is connected with the negative pole of the first diode D1 with the first end of capacitor C simultaneously, the second end while of capacitor C and the second end of the first resistance R 1, the first end of the 3rd resistance R 3, the first end of the 5th resistance R 5 is connected with the negative pole of thyristor VT, the anodal while of the first diode D1 and the second end of the second resistance R 2, the first end of the 4th resistance R 4 is connected with the first end of relay J coil, the second end of the 3rd resistance R 3 is connected with the second end of the 4th resistance R 4 with the collector electrode of triode V simultaneously, the second end of the 5th resistance R 5 is connected with the emitter of triode V with the control end of thyristor VT simultaneously, the positive pole of thyristor VT is connected with the first end of the 7th resistance R 7, the second end of the 7th resistance R 7 is connected with the negative pole of the second diode D2, the positive pole of the second diode D2 is connected with the second end of relay J coil, the base stage of triode V is connected with the first end of the 6th resistance R 6, the second end of the 6th resistance R 6 is connected with signal input part.
Signal input part in the utility model is connected with the metal net mask of electric fan extraneous, when having people to touch electric fan guard, can cut off motor M power supply, motor M is carried out to dynamic braking simultaneously and makes it stall immediately.Wherein relay J is selected the AC excitation relay of 220V, can change the sensitivity of automatic stop arrangement during adjusting by changing the resistance of the 6th resistance R 6, when finger does not touch electric fan metal net mask, triode V cut-off, relay J discharges, and its normally-closed contact is connected motor M power supply, and motor M runs well.When having finger to touch electric fan guard, the induced signal of human body is added in the base stage of triode V through the 6th resistance R 6, make its conducting, voltage triggered thyristor VT conducting in the 5th resistance R 5, make the adhesive of relay J excitation, its normally-closed contact J2 disconnects motor M power supply, normally opened contact J1 is closed simultaneously, VDC after the first diode D1 and capacitor C rectifying and wave-filtering is added to motor M two ends, on stator, produce a direct current stationary magnetic field, thereby make motor M stall immediately, when hand leaves guard, triode V and thyristor VT end again, relay J discharges, fan motor M power connection runs well.
The technical solution of the utility model is not limited to the restriction of above-mentioned specific embodiment, and every technology distortion of making according to the technical solution of the utility model, within all falling into protection domain of the present utility model.
Claims (2)
1. the automatic stop arrangement of an electric fan, it is characterized in that: comprise the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, relay, motor, the first diode, the second diode, electric capacity, triode and thyristor, the input end of described motor is connected with the first end of described the second resistance with the live wire end of ac power supply simultaneously, the output terminal of described motor is connected with the first end of described relay normally-closed contact with the first end of described relay normally open contact simultaneously, the second end of described relay normally-closed contact is connected with the first end of described the first resistance and the zero line side of described ac power supply simultaneously, the second end of described relay normally open contact is connected with the negative pole of described the first diode with the first end of described electric capacity simultaneously, the second end while of described electric capacity and the second end of described the first resistance, the first end of described the 3rd resistance, described the 5th first end of resistance and the negative pole of described thyristor are connected, the anodal while of described the first diode and the second end of described the second resistance, described the 4th first end of resistance and the first end of described relay coil are connected, the second end of described the 3rd resistance is connected with the second end of described the 4th resistance with the collector electrode of described triode simultaneously, the second end of described the 5th resistance is connected with the control end of described thyristor and the emitter of described triode simultaneously, the positive pole of described thyristor is connected with the first end of described the 7th resistance, the second end of described the 7th resistance is connected with the negative pole of described the second diode, the positive pole of described the second diode is connected with the second end of described relay coil, the base stage of described triode is connected with the first end of described the 6th resistance, the second end of described the 6th resistance is connected with signal input part.
2. the automatic stop arrangement of electric fan according to claim 1, is characterized in that: described triode is NPN type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320622045.3U CN203500079U (en) | 2013-10-08 | 2013-10-08 | Automatic stopping device of electric fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320622045.3U CN203500079U (en) | 2013-10-08 | 2013-10-08 | Automatic stopping device of electric fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500079U true CN203500079U (en) | 2014-03-26 |
Family
ID=50331062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320622045.3U Expired - Fee Related CN203500079U (en) | 2013-10-08 | 2013-10-08 | Automatic stopping device of electric fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203500079U (en) |
-
2013
- 2013-10-08 CN CN201320622045.3U patent/CN203500079U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20141008 |
|
| EXPY | Termination of patent right or utility model |