CN202593195U - Built-in tire pressure monitoring emitter provided with irregular antenna - Google Patents
Built-in tire pressure monitoring emitter provided with irregular antenna Download PDFInfo
- Publication number
- CN202593195U CN202593195U CN2012202566833U CN201220256683U CN202593195U CN 202593195 U CN202593195 U CN 202593195U CN 2012202566833 U CN2012202566833 U CN 2012202566833U CN 201220256683 U CN201220256683 U CN 201220256683U CN 202593195 U CN202593195 U CN 202593195U
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- Prior art keywords
- special
- shaped antenna
- antenna
- built
- tire pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
- B60C23/0433—Radio signals
- B60C23/0435—Vehicle body mounted circuits, e.g. transceiver or antenna fixed to central console, door, roof, mirror or fender
- B60C23/0444—Antenna structures, control or arrangements thereof, e.g. for directional antennas, diversity antenna, antenna multiplexing or antennas integrated in fenders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a built-in tire pressure monitoring emitter provided with an irregular antenna. The built-in tire pressure monitoring emitter comprises a shell, wherein the irregular antenna which is integrated with the shell is arranged at the bottom of the shell along the edge of an inner wall; and the emitting end and the grounding end of the irregular antenna are connected with a printed circuit board arranged in the shell through supporting legs. The irregular antenna is made of a radiative sheet metal, and the length of the irregular antenna is approximate to 1/4 wavelength of wireless transmitting frequency of the emitter. The antenna is arranged in the shell in the process of manufacturing the shell of the emitter, only the emitting end and the grounding end of the antenna are connected with the printed circuit board, and the thickness of the emitter is not increased. The antenna is coated by the plastic shell, can tolerate high temperature and high pressure inside the tire, does not deform due to high-speed rotation of the tire, and has high reliability and stability.
Description
Technical field
The utility model relates to automotive tire pressure checking system field, especially relates to a kind of built-in tire pressure detection emitter that is provided with special-shaped antenna.
Background technology
According to SAE in 2002 investigation, the whole America has 260,000 traffic accidents every year on average, and low or seepage causes owing to tire pressure; And the traffic accident that on express highway, takes place has 70% owing to blow out and cause; In addition, annual 75% tire fault is owing to tire seepage or underinflation causing.Statistics shows: the major cause that traffic accident increases is to blow out because of what tire fault caused in running at high speed.
According to another statistics, in China, 46% traffic accidents is owing to tire fault causes, this wherein only blows out one and just accounts for 70% of accident total amount.In the process of running at high speed of automobile, tire fault is that the lethality maximum also is the most difficult accident potential that prevents, and is the major reason that sudden traffic accident takes place.
Under this background, tire inflation pressure determining system arises at the historic moment.Tire inflation pressure determining system is also referred to as TPMS (Tire Pressure Monitoring System), is used in the vehicle traveling process tire pressure is monitored automatically, and tire flat, air pressure are crossed low or too high warning.The TPMS system is made up of projector and receiving device, and projector is divided into built-in and external.From the accuracy of tire pressure detection and the safety perspective of tire, the car load factory that is furnished with the TPMS system at present all selects built-in projector for use.Built-in projector comprises sensor, emitting antenna and button cell; Sensor is used to detect tire in-to-in air pressure and temperature; Antenna is used for the signal that emission sensor detects, and sensor links to each other with emitting antenna through circuit, and button cell links to each other with sensor through circuit.Receiving device is generally sent out in operator's compartment, and the signal of receiving and transmitting unit emission is reminded chaufeur when tire pressure is crossed low and leak gas, and the generation of what one is particularly good at group is handed in prevention.
Built-in tire pressure detection emitter adopts powered battery, like how minimum emissive power, lets data transmit farthest, is to prolong the battery key in service life.Therefore the impedance matching circuit of antenna just shows important, has only impedance match accurate, and projector could obtain maximum through-put power.
Chinese patent ZL 201020195793.4 discloses a kind of built-in tire pressure detection emitter that valve and wheel hub is made as antenna.This projector comprises launcher shell, projector main circuit board and is used for the screw that the main circuit board antenna output end links to each other with valve; Screw connects together projector main circuit board and launcher shell; This built-in tire pressure monitoring projector has also comprised the valve and the wheel hub that links to each other with valve of the antenna effect of projector, and the valve and the launcher shell that link to each other with helical are assembled together.This patent adopts valve and the antenna of the wheel hub that links to each other with valve as projector, and there is intrinsic defective in this antenna: the valve of different manufacturers is different with the manufacturing materials of wheel hub, and its impedance is also different, can not be this Antenna Design impedance matching circuit.In addition; When aerial length approximate the emission electromagnetic wavelength 1/4 the time emission efficiency the highest, and the length of valve and wheel hub is fixed, the length of the antenna of their compositions also be not equal to launch electromagnetic 1/4 wavelength; Therefore, adopt the emission efficiency of this antenna emitter lower.That causes the emission data easily loses poor reliability.
One Chinese patent application number is 201010172883.6, and name is called the antenna design method that " built-in tire pressure detection emitter that is provided with PCB antenna " discloses a kind of built-in tire pressure monitoring projector.This projector comprises tire inflation pressure determining system main printed circuit board and PCB antenna, and PCB antenna is arranged on the tire inflation pressure determining system main printed circuit board.This built-in tire pressure detection emitter also comprises printed circuit board (PCB) and antenna bracket, and printed circuit board (PCB) is fixed on the tire inflation pressure determining system main printed circuit board by antenna bracket, and PCB antenna is arranged on the printed circuit board (PCB).The antenna design method that this patent is announced is simple; Stable performance; But, because it adopts main printed circuit board, PCB antenna and antenna bracket; Printed circuit board (PCB) is fixed on the tire inflation pressure determining system main printed circuit board by antenna bracket, and PCB antenna is arranged on the printed circuit board (PCB).This just must increase the thickness of projector.Because built-in tire pressure detection emitter must be installed on the wheel hub, require the external form of projector approach and identical with wheel hub as far as possible, could reduce influence to the high speed revolution tire.Therefore, the antenna design method that this patent is announced is owing to adopt main printed circuit board, and the double-decker of PCB antenna and antenna bracket combination has satisfied not this requirement.
The utility model content
The purpose of the utility model is for overcoming the deficiency of above-mentioned prior art, a kind of built-in tire pressure detection emitter that is provided with special-shaped antenna is provided, and the thickness of this projector does not increase, and antenna can be realized omni-directional transmissions, and emission efficiency is high, and data transmission is stable, reliable.
For realizing above-mentioned purpose, the utility model adopts following technical proposals:
A kind of built-in tire pressure detection emitter that is provided with special-shaped antenna; Comprise housing; Special-shaped antenna; Printed circuit board (PCB) and battery, said housing bottom along inner wall edge dispose into one be the special-shaped antenna of one with housing, the transmitting terminal of said special-shaped antenna and ground terminal link to each other with printed circuit board (PCB) in being arranged at housing through supporting leg.
The profile of said special-shaped antenna matches with the housing bottom edge, and special-shaped antenna integral body is a font.
The length of said special-shaped antenna is 1/4 of projector emission electromagnetic wavelength.
Said special-shaped antenna adopts radiation sheet metal to process.
The direct injection moulding of said special-shaped antenna is in housing.
The transmitting terminal of said special-shaped antenna and ground terminal are the leg structure that upwards stretches out.
Be divided into left and right sides two parts in the said housing; The middle flange that passes through on the inner walls separates; The battery of projector places the housing left-half, and printed circuit board (PCB) places the housing right half part, and battery and printed circuit board (PCB) all are arranged at the top of special-shaped antenna; Have between battery and printed circuit board (PCB) and the special-shaped antenna at interval, the both positive and negative polarity of battery links to each other with printed circuit board (PCB) through two leads.
The special-shaped antenna of the built-in tire pressure detection emitter of the utility model adopts radiation sheet metal to process, and its length is near 1/4 wavelength of projector wireless transmission frequency.This antenna is inserted wherein when making launcher shell, has only the transmitting terminal of antenna to link to each other with printed circuit board (PCB) through supporting leg with ground terminal, can realize omni-directional transmissions, and not increase the thickness of projector, coincide good with wheel hub.The special-shaped antenna casing plastic of originally experiencing coats, and can tolerate the HTHP of inside tires, and can not be out of shape because of the high speed revolution that receives tire, has the reliability and stability of height.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the special-shaped antenna structural representation;
Wherein 1. special-shaped antennas, 2. housing, 3. printed circuit board (PCB), 4. button cell, 5. lead, 6. supporting leg.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Like Fig. 1, shown in 2, be provided with the built-in tire pressure detection emitter of special-shaped antenna, comprise housing 2, printed circuit board (PCB) 3 and button cell 4.
In the said housing 2 bottom along inner wall edge dispose into one be the special-shaped antenna 1 of one with shell 2 bodies, the transmitting terminal of said special-shaped antenna 1 and ground terminal link to each other with printed circuit board (PCB) 2 in being arranged at housing 2.
The profile of special-shaped antenna 1 matches with housing 2 inner bottom part edges, and special-shaped antenna 1 integral body is a font.The length of special-shaped antenna 1 is 1/4 wavelength of projector wireless transmission frequency.Special-shaped antenna 1 adopts radiation sheet metal to process.Special-shaped antenna 1 direct injection moulding is in housing.The transmitting terminal of special-shaped antenna 1 and ground terminal are supporting leg 6 structures of upwards stretching out.
Be divided into left and right sides two parts in the housing 2, left and right sides two parts separate through the flange on housing 2 inwalls, and button cell 4 places the left-half of housing 2; Printed circuit board (PCB) 3 places the right half part of housing 2.And button cell 4 and printed circuit board (PCB) 3 all are arranged at the top of special-shaped antenna 1, have between button cell 4 and printed circuit board (PCB) 3 and the special-shaped antenna 1 at interval, and button cell 4 links to each other through two leads 5 with printed circuit board (PCB) 3.
The special-shaped antenna 1 of the utility model adopts radiation sheet metal to process, and its length is near 1/4 wavelength of projector wireless transmission frequency.This antenna is inserted wherein when making launcher shell, has only the transmitting terminal of antenna to link to each other with circuit card with ground terminal, does not increase the thickness of projector.The antenna casing plastic of originally experiencing coats, and can tolerate the HTHP of inside tires, and can not be out of shape because of the high speed revolution that receives tire, has the reliability and stability of height.
Though the above-mentioned accompanying drawing that combines is described the specific embodiment of the utility model; But be not restriction to the utility model protection domain; One of ordinary skill in the art should be understood that; On the basis of the technical scheme of the utility model, those skilled in the art need not pay various modifications that creative work can make or distortion still in the protection domain of the utility model.
Claims (7)
1. built-in tire pressure detection emitter that is provided with special-shaped antenna; Comprise housing; It is characterized in that; Said housing bottom along inner wall edge dispose into one be the special-shaped antenna of one with housing, the transmitting terminal of said special-shaped antenna and ground terminal link to each other with printed circuit board (PCB) in being arranged at housing through supporting leg.
2. the built-in tire pressure detection emitter that is provided with special-shaped antenna as claimed in claim 1 is characterized in that, the profile of said special-shaped antenna matches with housing inner bottom part edge, and special-shaped antenna integral body is a font.
3. according to claim 1 or claim 2 the built-in tire pressure detection emitter that is provided with special-shaped antenna is characterized in that the length of said special-shaped antenna is 1/4 wavelength of projector wireless transmission frequency.
4. the built-in tire pressure detection emitter that is provided with special-shaped antenna as claimed in claim 3 is characterized in that, said special-shaped antenna adopts radiation sheet metal to process.
5. the built-in tire pressure detection emitter that is provided with special-shaped antenna as claimed in claim 4 is characterized in that the direct injection moulding of said special-shaped antenna is in housing.
6. the built-in tire pressure detection emitter that is provided with special-shaped antenna as claimed in claim 5 is characterized in that the transmitting terminal of said special-shaped antenna and ground terminal are the leg structure that upwards stretches out.
7. the built-in tire pressure detection emitter that is provided with special-shaped antenna as claimed in claim 6 is characterized in that, is divided into left and right sides two parts in the said housing; Left and right sides two parts through the flange on the inner walls separately; Battery places the left-half of housing, and printed circuit board (PCB) places the right half part of housing, and battery and printed circuit board (PCB) all are arranged at the top of special-shaped antenna; Have between battery and printed circuit board (PCB) and the special-shaped antenna at interval, battery links to each other through two leads with printed circuit board (PCB).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202566833U CN202593195U (en) | 2012-06-02 | 2012-06-02 | Built-in tire pressure monitoring emitter provided with irregular antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202566833U CN202593195U (en) | 2012-06-02 | 2012-06-02 | Built-in tire pressure monitoring emitter provided with irregular antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202593195U true CN202593195U (en) | 2012-12-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202566833U Expired - Lifetime CN202593195U (en) | 2012-06-02 | 2012-06-02 | Built-in tire pressure monitoring emitter provided with irregular antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202593195U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653216A (en) * | 2012-06-02 | 2012-09-05 | 山东省科学院自动化研究所 | Built-in tire pressure detection transmitter provided with irregular antenna |
| CN110035914A (en) * | 2016-12-05 | 2019-07-19 | 米其林集团总公司 | Radio-frequency communication module for tire |
-
2012
- 2012-06-02 CN CN2012202566833U patent/CN202593195U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653216A (en) * | 2012-06-02 | 2012-09-05 | 山东省科学院自动化研究所 | Built-in tire pressure detection transmitter provided with irregular antenna |
| CN110035914A (en) * | 2016-12-05 | 2019-07-19 | 米其林集团总公司 | Radio-frequency communication module for tire |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121212 |