CN202597145U - Finger touch protection device for electric fan - Google Patents
Finger touch protection device for electric fan Download PDFInfo
- Publication number
- CN202597145U CN202597145U CN 201120556284 CN201120556284U CN202597145U CN 202597145 U CN202597145 U CN 202597145U CN 201120556284 CN201120556284 CN 201120556284 CN 201120556284 U CN201120556284 U CN 201120556284U CN 202597145 U CN202597145 U CN 202597145U
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- CN
- China
- Prior art keywords
- triode
- fan
- circuit
- electric fan
- utility
- 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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Abstract
The utility model discloses a finger touch protection device for electric fans, including a triode Q1 and a triode Q2. A touch point J1 is connected with the triode Q1 base. The touch point J1 is acted as a fan net guard. The triode Q1 constitutes a base amplifying circuit as a small signal drive circuit. A switch circuit is composed of the triode Q2. A normal closed node of a relay K1 is connected with a power supply of 5 V in series. The beneficial effects of the circuit of the utility model are that: when a child touches the metal net guard of the fan, the fan will be stopped in time to prevent the happening of accidents.
Description
Technical field
The utility model relates to a kind of electric fan and refers to touch protective gear, belongs to electronic technology field.
Background technique
Electric fan on the market only has the function that turns to speed governing.Though electric fan flabellum outside is equipped with the metal guard, because child's finger is thinner, still can finger be inserted, exist potential safety hazard.Electric fan does not in the market have and touches power-off protection and warning function.
Chinese invention patent CN200910262892.1 discloses a kind of electric fan and has referred to touch protection and warning device, but this patent complicated circuit, so that the cost raising, do not meet enterprise's needs.
The model utility content
The utility model technical problem to be solved is that the deficiency that is directed against existing technology provides a kind of cheap, and the electric fan that more adapts to enterprise's needs refers to touch protective gear.
A kind of electric fan refers to touch protective gear; Comprise triode Q1 and triode Q2; Contact J1 is connected with triode Q1 base stage, and contact J1 is as the guard of fan, and triode Q1 forms base amplification circuit as the small-signal drive circuit; Triode Q2 forms switching circuit, and the normally closed node of relay K 1 is connected with the 5V power supply.
The utility model circuit beneficial effect is: when child touches the metal guard of fan, can in time let the fan stall, to avoid the generation of accident.
Description of drawings
Fig. 1 is the utility model circuit theory diagrams.
Embodiment
Below in conjunction with specific embodiment, the utility model is elaborated.
With reference to figure 1, the circuit theory diagrams of the utility model comprise triode Q1 (9015) and triode Q2 (9013), and contact J1 is connected with the Q1 base stage; Contact J1 is as the guard (guard is contact J1) of fan, and triode Q1 (9015) forms its ground level amplification circuit and forms switching circuit as small-signal drive circuit, triode Q2 (9013), and the normally closed node of relay K 1 is connected with the 5V power supply, when nobody touches fan metal guard; The Q1 base stage is unsettled, and triode Q1 ends, Q2 base stage no-bias, and triode Q2 also ends; Relay Inside coil no current passes through, the normally closed node energized of K1, fan proper functioning; In case child touches fan metal covering J1, the Q1 base stage has bias voltage, makes the Q1 conducting; Q2 is conducting immediately, and the relay Inside coil has certain electric current to pass through, and produces electromagnetic effect; Make the armature in the relay that normally closed node is broken off, cut off the electricity supply, thereby make the fan stall.When hand leaves the metal guard after several approximately seconds, capacitor C 2 makes Q2 base stage no-bias through the R2 discharge, and Q2 ends, and normally closed node is closed, electric fan again automatically telegram in reply open.
Should be understood that, concerning those of ordinary skills, can improve or conversion, and all these improvement and conversion all should belong to the protection domain of the utility model accompanying claims according to above-mentioned explanation.
Claims (1)
1. an electric fan refers to touch protective gear; It is characterized in that, comprise triode Q1 and triode Q2, contact J1 is connected with triode Q1 base stage; Contact J1 is as the guard of fan; Triode Q1 forms base amplification circuit as the small-signal drive circuit, and triode Q2 forms switching circuit, and the normally closed node of relay K 1 is connected with the 5V power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120556284 CN202597145U (en) | 2011-12-28 | 2011-12-28 | Finger touch protection device for electric fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120556284 CN202597145U (en) | 2011-12-28 | 2011-12-28 | Finger touch protection device for electric fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202597145U true CN202597145U (en) | 2012-12-12 |
Family
ID=47314692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120556284 Expired - Fee Related CN202597145U (en) | 2011-12-28 | 2011-12-28 | Finger touch protection device for electric fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202597145U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043221A (en) * | 2013-03-14 | 2014-09-17 | 上海熊猫机械(集团)有限公司 | Electronic fire-fighting module |
| 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 |
| CN105488931A (en) * | 2014-10-09 | 2016-04-13 | 中兴通讯股份有限公司 | Warning signal generation device, base station power device, and base station power system |
| CN105914708A (en) * | 2016-06-29 | 2016-08-31 | 广东美的环境电器制造有限公司 | Net-touching shutdown protection circuit used for fan and fan equipped with same |
-
2011
- 2011-12-28 CN CN 201120556284 patent/CN202597145U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043221A (en) * | 2013-03-14 | 2014-09-17 | 上海熊猫机械(集团)有限公司 | Electronic fire-fighting module |
| CN105488931A (en) * | 2014-10-09 | 2016-04-13 | 中兴通讯股份有限公司 | Warning signal generation device, base station power device, and base station power system |
| 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 |
| CN105914708A (en) * | 2016-06-29 | 2016-08-31 | 广东美的环境电器制造有限公司 | Net-touching shutdown protection circuit used for fan and fan equipped with same |
| CN105914708B (en) * | 2016-06-29 | 2019-08-27 | 广东美的环境电器制造有限公司 | For the net-fault stoppage protection circuit of fan and with its fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20131228 |