CN102069685B - External tire pressure sensor of automobile - Google Patents
External tire pressure sensor of automobile Download PDFInfo
- Publication number
- CN102069685B CN102069685B CN 201010534154 CN201010534154A CN102069685B CN 102069685 B CN102069685 B CN 102069685B CN 201010534154 CN201010534154 CN 201010534154 CN 201010534154 A CN201010534154 A CN 201010534154A CN 102069685 B CN102069685 B CN 102069685B
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- Prior art keywords
- connection pipe
- inner casing
- pressure sensor
- tire pressure
- tire
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- 238000007789 sealing Methods 0.000 claims description 18
- 239000000523 sample Substances 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000002463 transducing effect Effects 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 239000000565 sealant Substances 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000011241 protective layer Substances 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000007123 defense Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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Abstract
The invention discloses an external tire pressure sensor of an automobile, mainly comprising a connection pipe (4), a charging connector (5), an air feed hole (11), a sensing circuit and a shell, wherein the connection pipe (4) is jointed with a tire air tap, the charging connector (5) is provided with a seal thimble, the air feed hole (11) communicates the inner cavity of the connection pipe with the inner cavity of the charging connector, the sensing circuit is used for detecting the tire pressure of the air feed hole, and the shell with a seal structure is used for fixing the components. Compared with the prior art, the external tire pressure sensor disclosed by the invention does not need to be detached from the outer tire air tap and then can charge/discharge the tire; in addition, the invention effectively realizes the dustproof, waterproof and moistureproof effects, guarantees that the products can exactly reflect tire parameters under the poor environment and ensures the driving safety and the economic driving by utilizing multiple protective layers.
Description
Technical field
The present invention relates to baroceptor, relate in particular to a kind of sensor that is arranged at the externally measured tire internal air pressure of motor tire.
Background technology
Present most anticyclonic pressure motor tire is made of inner tube of a tyre cover tire, and tire sensor is arranged on the valve in the tire outside.The vehicle environment in tire in the process of moving is very abominable, bears simultaneously anticyclonic pressure, large centnifugal force, high temperature, large humidity, strong vibration and dust etc.Tire sensor will detect tire pressure and tire temperature in real time, and tire flat, infrabar, anticyclonic pressure and high temperature are carried out early warning, thereby reaches pre-runflat, guarantee driving safety and economic driving.Although existing sensor can be measured the parameter of tire, when tire pressure was adjusted, need to pull down sensor could be to tyre inflating and venting.The tire internal gas pressure is during up to 12BAR, and can there be the phenomenon of gas leakage slowly in sensor.Existing sensor is poorly sealed simultaneously, contains the interior electronic component of high pressure air contact pickup of moisture content, and electronic component has been prone to the phenomenons such as oxidation, electric leakage, causes sensor normally not use.
Summary of the invention
The present invention will solve that existing sensor fills, bleed air operation is complicated, and poorly sealed problem proposes a kind of being arranged on the valve of the tire outside, and sealing tightly need not to dismantle the sensor that can fill tire, exit.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is a kind of external automobile tire pressure sensor of design, comprise printed circuit board (PCB), be located at sensing probe and transducing signal processing and the transmission circuit of printed circuit board (PCB) one side, the inner casing of built-in air guide hole, sealing is fixed on the connection pipe that can engage with cranked tire valve of inner casing one side, and sealing is fixed on the charging connector of the band sealing thimble of inner casing opposite side; Described air guide hole conducting connection pipe inner chamber and charging connector inner chamber are provided with between sensing probe and air guide hole and detect the hole; Be provided with packing seal between sensing probe and detection hole end surface; Described inner casing cavity direction in the connection pipe stretch out one in order to when connection pipe engages cranked tire valve by the push rod that opens cranked tire valve sealing thimble; Described inner casing outside also is covered with the shell of one deck closure, and this shell inboard is provided with to the battery of sensor power supply.
Described charging connector has cylindric junction surface to stretch into inner casing inside, and the junction surface is adopted with inner casing and is threaded, and is provided with seal ring between the end face at junction surface and inner casing.
Described push rod is tubular structure, and the cavity at its center is communicated with described air guide hole, and push rod is stretched towards the end of connection pipe and had air channel.
Described printed circuit board (PCB), is deviated from printed circuit board (PCB) between the joint of the side of sensing probe and printed circuit board (PCB) side and interior shell side wall and pours into sealant in inner casing by fastened by screw.
Be brushed with dubbin on described transducing signal processing and transmission circuit.
Described connection pipe inside face is provided with the negative thread that matches with the cranked tire valve outside thread.
Described connection pipe adopts copper material, and described inner casing adopts plastics, and inner casing is connected with connection pipe by injection mo(u)lding.
Described connection pipe is provided with the screw hole of fastening cranked tire valve.
Described shell comprises upper casing and lower casing, and upper and lower shell adopts screw to connect; Described lower casing comprises battery flat, is provided with the battery flat cover plate that is convenient for changing battery outside battery compartment.
Compared with prior art, the present invention need not to dismantle from tire outside valve, can fill tire, exit, adopt the multiple tracks protective layer, effectively realize the effect of dustproof and waterproof protection against the tide, guarantee that product can accurately reflect tire parameter in rugged environment, ensured traffic safety and economic driving.
Description of drawings
Below in conjunction with drawings and Examples to thin explanation, wherein:
Fig. 1 is the inner casing stereo appearance figure of preferred embodiment of the present invention;
Fig. 2 is the inner casing assembling External view of preferred embodiment of the present invention;
Fig. 3 is that the A that analyses and observe of preferred embodiment of the present invention schemes;
Fig. 4 is the stereo appearance figure of preferred embodiment of the present invention;
Fig. 5 is that the B that analyses and observe of preferred embodiment of the present invention schemes.
The specific embodiment
A kind of external automobile tire pressure sensor disclosed by the invention, comprise printed circuit board (PCB) 1, be located at sensing probe 2 and transducing signal processing and the transmission circuit of printed circuit board (PCB) one side, the inner casing 3 of built-in air guide hole 11, sealing is fixed on the connection pipe 4 that can engage with cranked tire valve of inner casing one side, and sealing is fixed on the charging connector 5 of the band sealing thimble 20 of inner casing opposite side; Described air guide hole conducting connection pipe inner chamber and charging connector inner chamber are provided with between sensing probe and air guide hole and detect hole 6; Be provided with packing seal 7 between sensing probe and detection hole end surface; Described inner casing cavity direction in the connection pipe stretch out one in order to when connection pipe engages cranked tire valve by the push rod 8 that opens cranked tire valve sealing thimble; Described inner casing outside also is covered with the shell of one deck closure, and this shell inboard is provided with to the battery 10 of sensor power supply.Referring to Fig. 5, when connection pipe 4 engages with cranked tire valve, push rod 8 is pressed the sealing thimble of cranked tire valve, air in tire flows into charging connector 5 through air guide hole 11, the sealing thimble 20 of charging connector end is sealing state, air guide hole 11 is same equipressure with inside tires, and sensing probe 2 is by detecting the pressure of 6 detecting tire inside, hole.When needs reduce inside tires pressure, only need press the sealing thimble 20 on charging connector 5, the gas in tire will be released; When needs increase tire pressure, get final product to tyre inflating by charging connector 5.
Referring to Fig. 5, in preferred embodiment, charging connector 5 has cylindric junction surface to stretch into inner casing 3 inside, and the junction surface is adopted with inner casing and is threaded, and is provided with seal ring 15 between the end face at junction surface and inner casing.Referring to Fig. 5 or Fig. 3, push rod 8 is tubular structure, and the cavity at its center is communicated with described air guide hole 11, and push rod is stretched towards the end of connection pipe and had air channel 12.When connection pipe 4 was combined with the motor tire valve, the sealing thimble of cranked tire valve was pressed in push rod 8 ends, and inside tires is by air channel 12 and 11 conductings of air guide hole.Referring to Fig. 5, printed circuit board (PCB) by fastened by screw in inner casing 3, Fig. 1 shows four screw holes 21 on inner casing 3, printed circuit board (PCB) is assembled to from above in inner casing 3, the fastening force of screw will be felt probe 2 and be pressed on packing seal 7, prevent that the air in tire is seeped on printed circuit board (PCB) by detecting hole 6.Referring to Fig. 2, infiltrate from another direction of printed circuit board (PCB) for preventing air and moisture, deviate from printed circuit board (PCB) 1 between the joint of the side of sensing probe 2 and printed circuit board (PCB) side and inner casing 3 sidewalls and pour into sealant 13.Sealant 13 is sealants of resistant to elevated temperatures resene or silica type.As the last line of defense of protection against the tide, be brushed with dubbin on transducing signal processing and transmission circuit.Be provided with referring to Fig. 3 or Fig. 5 connection pipe 4 inside faces the negative thread that matches with the cranked tire valve outside thread.Connection pipe 4 adopts copper material, and described inner casing 3 adopts plastics, and inner casing is connected with connection pipe by injection mo(u)lding.Manufacturing course is first to prepare connection pipe, then connection pipe is placed in mould, by injection moulding, connection pipe 4 and inner casing 3 is made one.Connection pipe 4 is screwed onto on cranked tire valve, and when preventing tyre rotation, connection pipe 4 (being sensor) gets loose, and connection pipe 4 is provided with the screw hole 14 of fastening cranked tire valve, and screw is fixed on connection pipe 4 on cranked tire valve by screw hole 14.Comprise upper casing 9a and lower casing 9b referring to Fig. 4 or Fig. 3 shell, upper and lower shell adopts screw to connect; Described lower casing comprises battery flat, is provided with the battery flat cover plate 9c that is convenient for changing battery 10 outside battery compartment, also is provided with seal ring 22 between battery flat cover plate and lower casing 9b.
The present invention is at anticyclonic pressure 12.5BAR after tested, negative 40 degree of temperature are to high temperature 105 degree, and in the working environment of humidity 100%, interiors of products is without infiltration and permeation, solve waterproof, the protection against the tide, dustproof of tire monitor system (TPMS) installation of sensors outside tire fully, be subjected to anticyclonic problem.Be installed on the actual use of vehicle more than 1 year, element exclusion in this product, element can oxidation and is made moist, the phenomenon that tire does not leak gas.Thereby make the life of this product.
Above embodiment is only casehistory, non-providing constraints.Anyly do not break away from spirit of the present invention and category, and to its equivalent modifications of carrying out or change, all should be contained among the application's claim scope.
Claims (9)
1. external automobile tire pressure sensor, comprise printed circuit board (PCB) (1), the sensing probe (2) and the transducing signal that are located at printed circuit board (PCB) one side are processed and transmission circuit, characterized by further comprising: the inner casing (3) of built-in air guide hole (11), sealing is fixed on the connection pipe (4) that can engage with cranked tire valve of inner casing one side, and sealing is fixed on the charging connector (5) of the band sealing thimble of inner casing opposite side; Described air guide hole conducting connection pipe inner chamber and charging connector inner chamber are provided with between sensing probe and air guide hole and detect hole (6); Be provided with packing seal (7) between sensing probe and detection hole end surface; Described inner casing cavity direction in the connection pipe stretch out one in order to when connection pipe engages cranked tire valve by the push rod (8) that opens cranked tire valve sealing thimble; Described inner casing outside also is covered with the shell of one deck closure, and this shell inboard is provided with to the battery (10) of sensor power supply.
2. external automobile tire pressure sensor as claimed in claim 1, it is characterized in that: described charging connector (5) has cylindric junction surface to stretch into inner casing (3) inside, the junction surface is adopted with inner casing and is threaded, and is provided with seal ring (15) between the end face at junction surface and inner casing.
3. external automobile tire pressure sensor as claimed in claim 1, it is characterized in that: described push rod (8) is tubular structure, the cavity at its center is communicated with described air guide hole (11), and push rod is stretched and had air channel (12) towards the end of connection pipe.
4. external automobile tire pressure sensor as claimed in claim 1, it is characterized in that: described printed circuit board (PCB), is deviated from printed circuit board (PCB) (1) between the joint of the side of sensing probe (2) and printed circuit board (PCB) side and inner casing (3) sidewall and pours into sealant (13) in inner casing (3) by fastened by screw.
5. external automobile tire pressure sensor as claimed in claim 1, is characterized in that: be brushed with dubbin on described transducing signal processing and transmission circuit.
6. external automobile tire pressure sensor as claimed in claim 1, it is characterized in that: described connection pipe (4) inside face is provided with the negative thread that matches with the cranked tire valve outside thread.
7. external automobile tire pressure sensor as claimed in claim 1 is characterized in that: described connection pipe (4) adopts copper material, and described inner casing (3) adopts plastics, and inner casing is connected with connection pipe by injection mo(u)lding.
8. external automobile tire pressure sensor as claimed in claim 1, it is characterized in that: described connection pipe (4) is provided with the screw hole (14) of fastening cranked tire valve.
9. external automobile tire pressure sensor as claimed in claim 1, it is characterized in that: described shell comprises upper casing (9a) and lower casing (9b), upper and lower shell adopts screw to connect; Described lower casing comprises battery flat, is provided with the battery flat cover plate (9c) that is convenient for changing battery (10) outside battery flat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010534154 CN102069685B (en) | 2010-11-05 | 2010-11-05 | External tire pressure sensor of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010534154 CN102069685B (en) | 2010-11-05 | 2010-11-05 | External tire pressure sensor of automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102069685A CN102069685A (en) | 2011-05-25 |
| CN102069685B true CN102069685B (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010534154 Active CN102069685B (en) | 2010-11-05 | 2010-11-05 | External tire pressure sensor of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102069685B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310734B (en) * | 2011-09-13 | 2014-11-05 | 广东铁将军防盗设备有限公司 | External tire pressure sensing device |
| CN106114083B (en) * | 2016-08-04 | 2018-08-24 | 东莞市诺丽电子科技有限公司 | Screwless tyre pressure sensor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1227801A (en) * | 1998-03-02 | 1999-09-08 | 黄添财 | Tyre-pressure alarm |
| CN2345804Y (en) * | 1998-09-11 | 1999-10-27 | 刘崇志 | Pneumatic tyre valve |
| CN2531961Y (en) * | 2001-11-19 | 2003-01-22 | 马水泉 | Tyre pressure monitor for car |
| CN2826556Y (en) * | 2005-08-09 | 2006-10-11 | 深圳市航盛电子股份有限公司 | External tire-pressure monitoring transmitter |
| CN2862002Y (en) * | 2005-12-23 | 2007-01-24 | 杨琪 | Portable tyre pressure meter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201856591U (en) * | 2010-11-05 | 2011-06-08 | 伍宗仁 | External automobile tire pressure sensor |
-
2010
- 2010-11-05 CN CN 201010534154 patent/CN102069685B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1227801A (en) * | 1998-03-02 | 1999-09-08 | 黄添财 | Tyre-pressure alarm |
| CN2345804Y (en) * | 1998-09-11 | 1999-10-27 | 刘崇志 | Pneumatic tyre valve |
| CN2531961Y (en) * | 2001-11-19 | 2003-01-22 | 马水泉 | Tyre pressure monitor for car |
| CN2826556Y (en) * | 2005-08-09 | 2006-10-11 | 深圳市航盛电子股份有限公司 | External tire-pressure monitoring transmitter |
| CN2862002Y (en) * | 2005-12-23 | 2007-01-24 | 杨琪 | Portable tyre pressure meter |
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| Publication number | Publication date |
|---|---|
| CN102069685A (en) | 2011-05-25 |
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Effective date of registration: 20171227 Address after: 518000 Shenzhen City, Shenzhen City, Guangdong, Nanshan District Taoyuan street, No. 1213, honghualing industrial district, honghualing industrial district, 4 floor, District 2 Patentee after: Shenzhen City Yong Otto Electronics Co. Ltd. Address before: 518000 Guangdong city of Shenzhen province Nanshan District Qiaoxiang Road East High Technology Park No. 1 plant (4-A branch) Patentee before: Wu Zongren |
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| TR01 | Transfer of patent right |