CN2575928Y - Armchair with adjustable back - Google Patents
Armchair with adjustable back Download PDFInfo
- Publication number
- CN2575928Y CN2575928Y CN 02277310 CN02277310U CN2575928Y CN 2575928 Y CN2575928 Y CN 2575928Y CN 02277310 CN02277310 CN 02277310 CN 02277310 U CN02277310 U CN 02277310U CN 2575928 Y CN2575928 Y CN 2575928Y
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- resistance
- integrated package
- pin
- iron core
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Abstract
The utility model relates to a non-touch point horn, which is composed of coils, a static iron core, a movable iron core, a metal elastic film piece connected with the movable iron core, a sounding plate connected with a plastic snail casing, etc., wherein, a circular circuit board and a circular cooling plate are connected with a power supply pin of a horn and are fixed on the metallic casing. The circular circuit board is provided with an integrated block and a field effect tube. A circuit composed of electronic components such as integrated blocks control the switching on and switching off of the coil to cause the metallic elastic film piece to generate oscillation and to cause the sounding plate to pronounce. After the sound passes through a spiral sound channel of a snail casing and resonate, the sound is sent out. The utility model has the advantages of no contact point, discharge ablation, reliable working, and long service life.
Description
Technical field
The utility model relates to loudspeaker, mainly is applicable to the electric horn on the motor vehicles such as automobile, motorcycle, tractor.
Background technology
At present, the electric horn of installing on the motor vehicle such as automobile, motorcycle, after energized, its energising, outage are to rely on the closure of the contact in the horn bulb to come with branch to realize, so be called the contact loudspeaker, when switching on because of the closing of contact, circuit is short circuit no better than, so electric current is very big in the circuit, and loudspeaker per minute work 400 to 500 times, the work of high-frequency ground produces discharge spark between the contact like this, with contact burn, carbonization, until corrode, dodgoing, volume are diminished, not even pronunciation, loudspeaker damage.
Summary of the invention
The purpose of this utility model is that design is a kind of after the loudspeaker energized, and its energising, outage rely on integrated circuit to realize there is not contact wear, reliable operation, long contactless loudspeaker of life-span.
Main technical schemes of the present utility model is achieved in that by the coil of installing in the metal shell, static iron core, moving iron core, the metallic elastic diaphragm of the moving iron core of connection and the pronunciation board that links to each other with plastics snail shell etc. to be formed, annular circuit board links to each other with the loudspeaker power pin by set bolt with annular heating panel, and be fixed on the metal shell, on annular circuit board, be provided with integrated package, field effect transistor.
Diode D on the annular circuit board
1With resistance R
1N on the series connection heel integrated package
4, N
8Pin connects, resistance R
2Be connected on resistance R
1Afterwards with the N on the integrated package
7Pin links to each other, resistance R
3Be connected on resistance R
2Afterwards with the N on the integrated package
6, N
2Pin links to each other, the N on the integrated package
2Pin and capacitor C
2Series connection is also joined voltage stabilizing didoe D with power cathode
2With capacitor C
1Be connected on resistance R after the parallel connection
1N on rear end and the integrated package
1Pin joins with power cathode after linking to each other again.Field effect transistor is provided with emitter a, collector electrode c, base stage b, and wherein emitter a links to each other with power cathode, collector electrode c and resistance R
4N on series connection back and the integrated package
3Pin links to each other, and an end of coil links to each other with the base stage b on the field effect transistor, the other end links to each other with positive source.Electronic component on the annular circuit board is SMD element.
The utility model has the advantages that: after the loudspeaker energized, its switching electricity relies on integrated circuit control, does not have contact wear, reliable operation, long service life.
Description of drawings
Fig. 1 is the structural representation of the contactless loudspeaker of the utility model;
Fig. 2 is the circuit theory schematic diagram of the contactless loudspeaker of the utility model.
Embodiment
As shown in Figure 1, coil 5, static iron core 7, moving iron core 6 are installed in metal shell 2, connect the metallic elastic diaphragm 8 and the pronunciation board 9 that links to each other with plastics snail shell 10 that move iron core, annular circuit board 3 links to each other with the loudspeaker power pin by set bolt with annular heating panel 4 and is fixed on the metal shell 2, metal shell 2 links to each other with body forward structure by brace 1, is provided with integrated package NI, field effect transistor Q on annular circuit board 3.
As shown in Figure 2, the diode D on the annular circuit board 3
1With resistance R
1N on the series connection heel integrated package NI
4, N
8Pin connects, resistance R
2Be connected on resistance R
1Afterwards with the N on the integrated package NI
7Pin connects, resistance R
3Be connected on resistance R
2Afterwards with the N on the integrated package NI
6, N
2Pin links to each other, the N on the integrated package NI
2Pin and capacitor C
2Series connection is also joined voltage stabilizing didoe D with power cathode
2With capacitor C
1Be connected on resistance R after the parallel connection
1N on rear end and the integrated package NI
1Pin joins with power cathode after linking to each other again, and field effect transistor Q is provided with emitter a, collector electrode c, base stage b, and wherein emitter a links to each other with power cathode, collector electrode c and resistance R
4N on series connection back and the integrated package
3Pin links to each other, and an end of coil 5 links to each other with base stage b on the field effect transistor Q, the other end links to each other with positive source.Electronic component on the annular circuit board 3 is SMD element.
As shown in Figure 1, 2, after pressing the loudspeaker contact button, in FREQUENCY CONTROL coil 5 switchings of the annular circuit board formed by electronic components such as integrated package NI and field effect transistor Q 3 by 410 hertz or 510 hertz, during energising, coil 5 produces magnetic field, static iron core 7 in the coil 5 will move iron core 6 suctions and win over, motion along with moving iron core 6, metallic elastic diaphragm 8 produces strain, during outage, coil 5 magnetic field forces disappear, and metallic elastic diaphragm 8 resets under self elastic force effect, and the vibration that produces same-amplitude, make pronunciation board 9 pronunciations.When coil 5 during by 410 hertz or 510 hertz of switchings electricity, the vibration of metallic elastic diaphragm 8 is finished per minute 410 times or 510 times is pronounced pronunciation board 9 continuously, and sound outwards spreads out of after by the spirality tone channel sympathetic response in the plastics snail shell 10.After unclamping horn button, down circuitry, loudspeaker quit work.
Claims (3)
1. contactless loudspeaker, form by the coil of installing in the metal shell (5), static iron core (7), moving iron core (6), the metallic elastic diaphragm (8) of the moving iron core of connection and the pronunciation board (9) that links to each other with plastics snail shell (10) etc., it is characterized in that: annular circuit board (3) links to each other with the loudspeaker power pin by set bolt with annular heating panel (4) and is fixed on the metal shell (2), is provided with integrated package (NI), field effect transistor (Q) on annular circuit board (3).
2. contactless loudspeaker according to claim 1 is characterized in that: the diode (D1 on the annular circuit board (3)
)With resistance (R
1) (N in series connection heel integrated package (NI)
4, N
8) the pin connection, resistance (R
2) be connected on resistance (R
1) afterwards with the (N on the integrated package (NI)
7) pin links to each other resistance (R
3) be connected on resistance (R
2) afterwards with the (N on the integrated package (NI)
6, N
2) pin links to each other the (N on the integrated package (NI)
2) pin and electric capacity (C
2) series connection and join voltage stabilizing didoe (D with power cathode
2) and electric capacity (C
1) be connected on resistance (R after the parallel connection
1) (N on rear end and the integrated package (NI)
1) pin joins with power cathode after linking to each other again, field effect transistor (Q) is provided with emitter (a), collector electrode (c), base stage (b), and wherein emitter (a) links to each other with power cathode, collector electrode (c) and resistance (R
4) connect afterwards and the (N on the integrated package
3) pin links to each other, an end of coil (5) links to each other with base stage (b) on the field effect transistor (Q), the other end links to each other with positive source.
3. contactless loudspeaker according to claim 1 and 2 is characterized in that: the electronic component on the annular circuit board (3) is SMD element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02277310 CN2575928Y (en) | 2002-09-19 | 2002-09-19 | Armchair with adjustable back |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02277310 CN2575928Y (en) | 2002-09-19 | 2002-09-19 | Armchair with adjustable back |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2575928Y true CN2575928Y (en) | 2003-09-24 |
Family
ID=33740943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02277310 Expired - Fee Related CN2575928Y (en) | 2002-09-19 | 2002-09-19 | Armchair with adjustable back |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2575928Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290046A (en) * | 2011-07-15 | 2011-12-21 | 莱州市金声汽车电器有限公司 | Snail electric horn |
| CN103065617A (en) * | 2012-12-30 | 2013-04-24 | 哈尔滨固泰电子有限责任公司 | Vehicle non-contact electronic speaker adopting ultrasonic welding technology |
-
2002
- 2002-09-19 CN CN 02277310 patent/CN2575928Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290046A (en) * | 2011-07-15 | 2011-12-21 | 莱州市金声汽车电器有限公司 | Snail electric horn |
| CN103065617A (en) * | 2012-12-30 | 2013-04-24 | 哈尔滨固泰电子有限责任公司 | Vehicle non-contact electronic speaker adopting ultrasonic welding technology |
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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 |