CN2807609Y - Electronic switch used for automobile trumpet - Google Patents
Electronic switch used for automobile trumpet Download PDFInfo
- Publication number
- CN2807609Y CN2807609Y CN 200520115410 CN200520115410U CN2807609Y CN 2807609 Y CN2807609 Y CN 2807609Y CN 200520115410 CN200520115410 CN 200520115410 CN 200520115410 U CN200520115410 U CN 200520115410U CN 2807609 Y CN2807609 Y CN 2807609Y
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- CN
- China
- Prior art keywords
- pin
- module
- electronic switch
- capacitor
- 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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Abstract
The utility model provides a touching type electronic switch used for automobiles, which comprises a touching type electrode M, a monostable circuit and a relay J, wherein the touching type electrode M is connected with a 555 type time-base circuit module IC foot 2 in the monostable circuit; the relay J is connected between a 555 type time-base circuit module IC output foot 3 and the ground. The utility model has the advantages of high sensibility, safety, comfortable operation, etc., and is an ideal electronic switch for automobile horns.
Description
Technical field the utility model relates to a kind of electronic switch, particularly a kind of electronic switch that is used for car horn.
Horn switch on the present automobile of background technology all is the electronic switch that adopts push type, connect the airing of views that circuit is realized car horn by push contact, now there is following drawback in push type electronic horn switch: 1, need bigger by power with accurately by being pressed in the airing of views that could realize loudspeaker on the contact in the operating process, effort is taken great energy, and effect is not very good; 2, between the switch contact oxidation can take place, form poor contact of contacts, cause the loudspeaker stereo poor effect, very the person can produce spark, and automobile is caused potential safety hazard.
Summary of the invention: the purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of touching electronic switch that is used on the car horn is provided.
For realizing the purpose of this utility model, the technical solution of the utility model is such: a kind of electronic switch that is used for car horn, it is characterized in that: it is by touch electrode M, and monostable circuit and relay J are formed, and monostable circuit is by 555 type time-base circuit module I C, resistance R and capacitor C
1, C
2, C
3, C
4And diode D composition, resistance R is connected to 12V, DC power supply V
DAnd between the module I C output pin 3, capacitor C
1Be connected to capacitor C between module I C pin 1 and the pin 2
2Be connected between module I C pin 5 and the ground connection capacitor C
3Be connected between module I C pin 7 and the ground connection capacitor C
4And diode D is parallel between module I C pin 3 and the ground connection; Touch electrode M and module I C pin 2 join; Relay J is in parallel with diode D.
The utlity model has following advantage: 1, highly sensitive, the operation comfortable, driver's airing of views loudspeaker only need touch electrode gently and get final product; 2, safety, reliable realizes that by the low current control relay on-off function of switch is stopped potential safety hazard.
Description of drawings: Fig. 1 is the utility model circuit diagram
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
The described electronic switch that is used for car horn of embodiment: Fig. 1 comprises: a monostable circuit, a touch electrode M and a relay J.
Described monostable circuit is by NE555 time-base circuit module, resistance R and capacitor C
1-C
4And diode D composition, resistance R is connected to 12V DC power supply V
DAnd between the NE555 pin 3, capacitor C
1Be connected between NE555 pin 1 and the pin 2 capacitor C
2Be connected between NE555 pin 5 and the ground connection capacitor C
3Be connected between NE555 pin 7 and the ground connection capacitor C
4And diode D is parallel between NE555 pin 3 and the ground connection.
Described touch electrode M and NE555 pin 2 join.
Described relay J is in parallel with diode D.
The course of work is, when human body not during touch electrode M, and NE555 pin 3 output low levels in the monostable circuit, not adhesive of relay J, horn circuit is obstructed, and loudspeaker do not ring, behind human body touch electrode M,, can induce various clutters because human body is in the complicated electromagnetic field, its effective value can reach tens to the hundreds of millivolt, after monostable circuit work, the NE555 pin 3 output high level in the circuit make the relay J adhesive, horn circuit is connected, and realizes loudspeaker airing of views purpose.Its relay J t pickup time
dLength is that the temporarily steady pulse duration of pin 3 output is by resistance R and capacitor C
3Decision, t
d≈ 1.1RC, relay J is after energising, and its coil two ends can be because self inductance produces self induction electromotive force, through capacitor C
4Make with diode D discharge that current attenuation slows down in the relay J coil, thereby prolong armature of relay release time, the device of protection driving.
The resistance of present embodiment, the optimum value of electric capacity are: R=10M Ω, C
1=0.001 μ F, C
2=0.01 μ F, C
3=0.047 μ F, C
4=100 μ F.
Claims (1)
1, a kind of electronic switch that is used for car horn is characterized in that: it is by touch electrode M, and monostable circuit and relay J are formed, and monostable circuit is by 555 type time-base circuit module I C, resistance R and capacitor C
1, C
2, C
3, C
4And diode D composition, resistance R is connected to 12V DC power supply V
DAnd between the module I C output pin 3, capacitor C
1Be connected between module I C pin 1 and the pin 2 capacitor C
2Be connected between module I C pin 5 and the ground connection capacitor C
3Be connected between module I C pin 7 and the ground connection capacitor C
4And diode D is parallel between module I C pin 3 and the ground connection; Touch electrode M and module I C pin 2 join; Relay J is in parallel with diode D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520115410 CN2807609Y (en) | 2005-07-14 | 2005-07-14 | Electronic switch used for automobile trumpet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520115410 CN2807609Y (en) | 2005-07-14 | 2005-07-14 | Electronic switch used for automobile trumpet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2807609Y true CN2807609Y (en) | 2006-08-16 |
Family
ID=36921904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520115410 Expired - Fee Related CN2807609Y (en) | 2005-07-14 | 2005-07-14 | Electronic switch used for automobile trumpet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2807609Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361448A (en) * | 2011-08-23 | 2012-02-22 | 何林 | Touch time switch prepared by using time-base circuit NE555 |
| CN102497182A (en) * | 2011-12-30 | 2012-06-13 | 魏传永 | Touch time switch adopting time-base circuit |
-
2005
- 2005-07-14 CN CN 200520115410 patent/CN2807609Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361448A (en) * | 2011-08-23 | 2012-02-22 | 何林 | Touch time switch prepared by using time-base circuit NE555 |
| CN102497182A (en) * | 2011-12-30 | 2012-06-13 | 魏传永 | Touch time switch adopting time-base circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |