CN1197014A - Tyre pressure warning device - Google Patents
Tyre pressure warning device Download PDFInfo
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- CN1197014A CN1197014A CN 97104209 CN97104209A CN1197014A CN 1197014 A CN1197014 A CN 1197014A CN 97104209 CN97104209 CN 97104209 CN 97104209 A CN97104209 A CN 97104209A CN 1197014 A CN1197014 A CN 1197014A
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Abstract
A tyre pressure alarm fixed to rim of wheel and hidden in tyre is composed of casing with air hole, pressure sensing and sending unit in the casing, and receiving unit in driver's cab. The pressure in tyre is transmitted via air hole into its casing, where it is detected and sent out. The receiving unit can receive the pressure information and recognize its source for indicating or alarming.
Description
The present invention relates to a kind of tyre pressure alarm, particularly relate to a kind of tyre pressure alarm that is arranged in the wheel rim, can avoid because of being arranged on the outer tyre pressure alarm that can produce collision, drop of wheel rim.
No matter general tire is under low excessively at tire pressure, the not enough or too high situation, the capital influences the safety that vehicle is advanced, so, general car owner can set firmly tyre pressure alarm outside the steel ring of tire, so that the detection tire pressure is too high and cross low state, still, in the use, because tyre pressure alarm is installed in outside the tyre rim, so be collided easily, drop easily and may go adrift.
The object of the present invention is to provide a kind of tyre pressure alarm on the steel ring in the tire that is installed in.
For achieving the above object, the present invention takes following scheme:
The invention is characterized in: this tyre pressure alarm is that anchor fitting of mat is installed on the interior steel ring of tire; can avoid in the past because of tyre pressure alarm is located on the cranked tire valve; and the situation that is collided easily, drops and may go adrift; in addition; whether by the pressure sensor transmitter unit and the signal receiving unit that are arranged in this tyre pressure alarm, and it is normal or be in the too high or too low state of tire pressure to detect tire pressure.
Concrete structure of the present invention is as follows:
Tyre pressure alarm of the present invention is characterized in that:
Comprise that one can be fixedly arranged on it in tire on the steel ring, be located in the housing and side gets the tire pressure value and the pressure-sensing transmitter unit sent with signal and one can observable positions when being located at the user and driving and can receive the signal receiving unit of each pressure of tire annunciator signal respectively but make whole tyre pressure alarm be hidden in anchor fitting in the tire, housing, one; Described housing is provided with one can make the tire pressure in the tire enter the interior air extractor vent of housing.
Described tyre pressure alarm is characterized in that:
Described anchor fitting comprises that two ends have the elastomeric belt body of hook fastener and the knock hole of several be subjected to elastomeric belt body snappings of forming in described housing bottom outer rim.
Described tyre pressure alarm is characterized in that:
Anchor fitting is one can be fixedly arranged on the location pedestal on the steel ring in the tire, and the location pedestal is provided with one second interlocking portion, and forms the first interlocking portion that cooperatively interacts with the second interlocking portion outside the air extractor vent of described housing bottom.
Described tyre pressure alarm is characterized in that:
Described pressure-sensing transmitter unit comprise one can be positioned at by the rubber-like pressure-bearing film, that described through hole receives tire pressure pressure-bearing film top and the push rod that is in contact with it ,-the individual compression spring of push rod restoring force, a first circuit board, a second circuit board and emitter apparatus of providing;
Described first circuit board has a medium pore and one first conductive reed, and first conductive reed plays the conducting effect on first circuit board, forms a normally closed switch;
Second circuit board has one second conductive reed and one the 3rd conductive reed, and second and third conductive reed forms a normal open switch;
Described emitter apparatus and is connected with first and second circuit card between described push rod and second circuit board.
The present invention is described in detail below in conjunction with drawings and Examples:
Fig. 1 is the first preferred embodiment assembled sectional view of tyre pressure alarm of the present invention.
Fig. 2 is the scheme drawing of anchor fitting in above-mentioned first preferred embodiment.
Fig. 3 is that the anchor fitting of Fig. 2 is fixedly arranged on scheme drawing on the steel ring in the tire with tyre pressure alarm.
Fig. 4 is the scheme drawing that the location pedestal of the present invention's second preferred embodiment anchor fitting cooperates with tyre pressure alarm.
Fig. 5 is that above-mentioned second preferred embodiment location pedestal makes tyre pressure alarm be fixedly arranged on scheme drawing on the steel ring in the tire.
Fig. 6 is the assembled sectional view of the another kind of embodiment of tyre pressure alarm of the present invention.
Fig. 7 is the circuit block diagram of middle pressure-sensing transmitter unit of the present invention.
Fig. 8 is the detailed circuit diagram that the pressure-sensing list among Fig. 8 does not have.
Fig. 9 is the diagram of block of signal receiving unit of the present invention.
As shown in Figure 1, the present invention includes a pressure-sensing unit (being specified in the back) and a signal receiving unit (figure does not show) that is installed on the Vehicular instrument panel that is arranged in the tyre pressure alarm 1, tyre pressure alarm 1 can be installed in by an anchor fitting respectively on the steel ring in the vehicle tyre, each tyre pressure alarm 1 all has a housing 10 and the lid 11 of a screw lock on housing 10, housing 10 is provided with an air extractor vent 100, tire pressure in the tire can be entered in the housing 10 via air extractor vent 100, the pressure-sensing unit records tire pressure, if the tire pressure value that records is too high or too low, signal is sent in the capital, and receive and pick out the source of signal by signal receiving unit, and demonstrate or give the alarm simultaneously, the user can know be the tire pressure of that tire or those several tires too high/low excessively, above-mentioned pressure-sensing unit is to be 5 with the US Patent notification number that this case applicant is invented, 289,161 patent is embodiment, comprises a rubber-like pressure-bearing film 20, a push rod 21 that is positioned at pressure-bearing film 20 tops, the compression spring 22 that push rod 20 restoring forces can be provided, a first circuit board 23, a second circuit board 24 and an emitter apparatus 25.
First circuit board 23 has a medium pore 230 and one first conductive reed 231, the first conductive reeds 231 are in conducting state on first circuit board 23, is normally closed (Normal Close) switch.
Second circuit board 24 has one second conductive reed 240 and one the 3rd conductive reed 241, on second circuit board 24, be electrically connected a power supply 242, power source body 242 is to be in series by lithium cell or mercury battery, and second and third conductive reed 240,241 is one often drives (Normal Open) switch.
Emitter apparatus 25 is positioned at 24 of push rod 21 and second circuit boards, and is connected with first and second circuit card 23,24.
After tire pressure enters from the air extractor vent 100 of housing 10, if enough pushing away pressure-bearing film 20, the strength of tire pressure draws, make push rod 21 upwards pass, push rod 21 passes the medium pore 230 of first circuit board 23 and first conductive reed 231 is upwards pushed away, impel first conductive reed 231 to break away from the situation that both positive and negative polarity is connected, represent that the tire pressure of tire is normal this moment, and signal receiving unit is failure to actuate, on the contrary, if the strength deficiency of tire pressure, then first conductive reed 231 will contact the situation into connecting downwards, emitter apparatus 25 is launched one group and is represented the low excessively signal of tire pressure, receive through signal receiving unit, decoding also shows by the read out instrument that is assemblied on the Vehicular instrument panel, can make steerman learn the tire that tire pressure is low excessively.
If tire pressure is excessive, and pressure-bearing film 20 and push rod 21 are upwards passed, can make and move to second circuit board 24 on first conductive reed 231 and when touching second conductive reed 240 and the 3rd conductive reed 241, make three conductive reed 241 of first conductive reed, 231 conductings on second circuit board 24, emitter apparatus 25 is launched one group and is represented the too high signal of tire pressure, receive, decode and show through signal receiving unit, can make navigating mate know the tire that tire pressure is too high by the read out instrument that is assemblied on the wheel instrument carrier panel.
As mentioned above, the tyre pressure alarm 1 of Fig. 1 is first preferred embodiment, be on the steel ring 310 that is fixed in by an anchor fitting (as Fig. 3) in the tire 31, as shown in Figure 2, this anchor fitting is the elastomeric belt body 30 that two ends have hook fastener 300, and on the bottom outer rim of tyre pressure alarm 1 housing 10 and lid 11, form the knock hole 12 that can be subjected to elastomeric belt body 30 snappings, as shown in Figure 3, elastomeric belt body 30 is with on the steel ring 310 of latch closure in the tire 31 of vehicle axletree both sides, tyre pressure alarm 1 is fixed on the steel ring 310 in the tire 31, make this tyre pressure alarm 1 can sense tire pressure at any time.
Shown in Fig. 4,5, when tyre pressure alarm 1 is implemented in installing, the said fixing device also can be a location pedestal 33 on the steel ring 310 that is welded in the tire 31, location pedestal 33 is provided with one second interlocking portion 330 (being negative thread), and the first interlocking portion 13 (being outside thread) that tyre pressure alarm 1 moulding and second interlocking portion 330 outside the air extractor vent 100 of housing 10 bottoms cooperatively interact, make tyre pressure alarm 1 the first interlocking portion 13 be fixed at the second interlocking portion 330 of locating pedestal 33, make tyre pressure alarm 1 sensing tire pressure at any time.
As shown in Figure 6, be the assembled sectional view of the another kind of tyre pressure alarm 1 ' of the present invention; Tyre pressure alarm 1 ' is fixedly arranged on the steel ring 310 in the tire 31 equally, comprise a housing 10 ' and the lid 11 ' of a screw lock on housing 10 ' with air extractor vent 100 ', wear knock hole 12 ' what housing 10 ' bottom outer rim formed that several can snapping, and one hole 12 ', location that can be buckled in tyre pressure alarm 1 ' by hook fastener 300 correspondences of as shown in Figure 3 elastomeric belt body 30 is located, and, make tyre pressure alarm 1 ' sensing tire pressure at any time with tyre pressure alarm 1 ' fixedly (as shown in Figure 3) on the steel ring 310 in the tire 31.Or, shown in Fig. 4,5, moulding has the externally threaded first interlocking portion 13 ' outside the air extractor vent 100 ' bottom the housing 10 ' of tyre pressure alarm 1 ', and cooperatively interact with the location pedestal 33 with second interlocking portion 330, on the location pedestal 33 that tyre pressure alarm 1 ' can be fixed at be welded on the steel ring 310.
Tyre pressure alarm 1 ' is to be with not existing together of tyre pressure alarm 1 shown in Figure 1, the pressure-sensing transmitter unit 4 that is located at tyre pressure alarm 1 ' mainly is the electronic type sensor sensing tire pressure by a pressure sensor 400, the tyre pressure alarm 1 of Fig. 1 then is to adopt mechanical action to come the sensing tire pressure, so, texture ratio in the housing 10 ' is simplified, in housing 10 ', only be provided with printed circuit board (PCB) 14, power supply 15, the pressure-sensing unit 4 that pressure sensor 400 and other electronic components are formed, just can record tire pressure, if the tire pressure value that records is too high or too low, will send with wireless signal, and receive and pick out the source of wireless signal by signal receiving circuit unit 5 (being located on the wheel instrument carrier panel), and then demonstrate or give the alarm simultaneously, just can learn be the tire pressure of that tire or those several tires too high/low excessively.As shown in Figure 7, pressure-sensing transmitter unit 4 comprises a pressure-sensing unit 40, signal converter 41, coding unit 42, a wireless signal converting unit 43 and one first power supply device 44.
As shown in Figure 8, pressure-sensing unit 40 comprises a pressure sensor 400, an impedance inverter circuit 401 and an amplifying circuit 45, pressure sensor 400 is semiconductor pressure sensors, the pressure sensor of the ADPI DIP type of the NATS board of producing by Matsushita Electric Works for example, cooperate shown in Figure 6, pressure sensor 400 is provided in a side of printed circuit board (PCB) 14 belows, and pressure sensor 400 has one and extends to the pressure portion 4001 that air extractor vent 100 ' is located hollow, pressure-sensing unit 40 can make the tire pressure of the pressure portion 4001 that enters pressure sensor 400, magnitude of voltage (being an analog signal) via impedance inverter circuit 401 outputs one corresponding tire pressure, because the magnitude of voltage too little (about 100mv) of output is so carry out voltage gain via amplifying circuit 45 again.
Wireless signal converting unit 43 can be converted to a wireless signal output with the high-voltage signal or the low-voltage signal of coding unit 42 outputs.
First power supply device 44 mainly is to be in series by lithium cell or mercury battery, and be electrically connected with printed circuit board (PCB) 14 among Fig. 6, required power supply when just becoming power supply 15, the first power supply devices 44 on the printed circuit board (PCB) 14 pressure-sensing unit 40, signal converter 41, coding unit 42 and 43 runnings of wireless signal converting unit can be provided.
As shown in Figure 9, signal receiving unit 5 is the best to be installed on the auto meter, so that chaufeur also can be grasped the tire pressure state of each tire simultaneously when vehicle is advanced, signal receiving unit 5 comprises a wireless signal receiving element 50, decoding unit 51, a read out instrument 52 and a second source feeding mechanism 53, in addition, more include a warning system 54.
Wireless signal receiving element 50 can receive the wireless signal of being exported from the wireless signal converting unit 43 of pressure-sensing transmitter unit 4, and wireless signal is exported.
Decoding unit 51 is an ASIC or MPU circuit, in the present embodiment is to adopt a microprocessor that is encoded to PIC16C54, the wireless signal of wireless signal receiving element 50 outputs can be exported a digital signal through decoding.
Read out instrument 52 is after the digital signal that receives decoding unit 51 outputs, the tire pressure state that shows each tire, embodiments of the invention are a Liquid Crystal Display (LCD) (following LCD that all claim, figure does not show), this digital signal must just be driven LCD display by a display interface (figure does not show) and be shown, make chaufeur can know that the tire pressure of learning that tire or those several tires is too high or too low by the LCD demonstration, and demonstrate actual tire pressure value.In addition, also can select configuration array light-emitting diode (LED) conduct on Vehicular instrument panel to show, with the too high or too low and actual tire pressure value of the tire pressure that shows that tire.
Warning system 54, after the digital signal that receives decoding unit 51 outputs, audio amplifier 540 through warning system 54 amplifies signal, acoustical signal gives the alarm, and via 541 outputs of a loud speaker, with the abnormal state of driver tire pressure, audio amplifier 540 can be an amplifier that is numbered LM386N.
Second source feeding mechanism 53 is to use the automobile power source of DC 12V-24V, required power supply when wireless signal receiving element 50, decoding unit 51, read out instrument 52 and warning system 54 actions could be provided.
Read out instrument 52 and warning system 54 can be contained in signal receiving unit 5 of the present invention simultaneously, also can only select one.
Effect of the present invention is as follows:
In sum, owing to tyre pressure alarm of the present invention is fixedly arranged on the interior steel ring of tire, so, do not have Tyre pressure alarm was assembled in outside the tire in the past, took place by collision, the phenomenon that drops or go adrift easily, and, Tyre pressure alarm of the present invention possesses simultaneously whether detect tire pressure normal, as tire pressure too high/excessively low state, Can provide the driver to reach with the safer driving guarantee of the passenger of car.
Claims (9)
1, a kind of tyre pressure alarm is characterized in that:
Comprise that one can be fixedly arranged on it in tire on the steel ring, be located in the housing and side gets the tire pressure value and the pressure-sensing transmitter unit sent with signal and one can observable positions when being located at the user and driving and can receive the signal receiving unit of each pressure of tire annunciator signal respectively but make whole tyre pressure alarm be hidden in anchor fitting in the tire, housing, one; Described housing is provided with one can make the tire pressure in the tire enter the interior air extractor vent of housing.
2, tyre pressure alarm according to claim 1 is characterized in that:
Described anchor fitting comprises that two ends have the elastomeric belt body of hook fastener and the knock hole of several be subjected to elastomeric belt body snappings of forming in described housing bottom outer rim.
3, tyre pressure alarm according to claim 1 is characterized in that:
Anchor fitting is one can be fixedly arranged on the location pedestal on the steel ring in the tire, and the location pedestal is provided with one second interlocking portion, and forms the first interlocking portion that cooperatively interacts with the second interlocking portion outside the air extractor vent of described housing bottom.
4, according to claim 2 or 3 described tyre pressure alarms, it is characterized in that:
Described pressure-sensing transmitter unit comprises that one can be positioned at pressure-bearing film top and the push rod that is in contact with it, a compression spring that the push rod restoring force can be provided, a first circuit board, a second circuit board and an emitter apparatus by the rubber-like pressure-bearing film, that described through hole receives tire pressure;
Described first circuit board has a medium pore and one first conductive reed, and first conductive reed plays the conducting effect on first circuit board, forms a normally closed switch;
Second circuit board has one second conductive reed and one the 3rd conductive reed, and second and third conductive reed forms a normal open switch;
Described emitter apparatus and is connected with first and second circuit card between described push rod and second circuit board.
5, according to claim 2 or 3 described tyre pressure alarms, it is characterized in that:
Described pressure-sensing transmitter unit is located on the printed circuit board (PCB), and is located in the described housing, and comprises a pressure-sensing unit, a signal converter, a coding unit, a wireless signal converting unit and one first power supply device;
Described pressure-sensing unit, signal converter, coding unit and wireless signal converting unit are connected successively; They also are connected with described first power supply device respectively;
Described pressure-sensing unit comprises tire pressure in the described housing of sensing, and exports the pressure sensor of the voltage signal of a corresponding tire pressure;
Described signal converter is converted to a digital signal with described voltage signal;
Described coding unit is with the digital signal encoding of described signal converter output, and with coding unit in the high pressure reference value and the low pressure reference value of establishing make comparisons, when if the digital signal of input is equal to or greater than this high pressure reference value, then export a high-voltage signal, when if the digital signal of input is equal to or less than this low pressure reference value, then export a low-voltage signal, this high-voltage signal and this low-voltage signal are all the digital type pulse signal;
Described wireless signal converting unit is converted to wireless signal output with the high-voltage signal or the low-voltage signal of coding unit output;
First power supply device provides described pressure-sensing unit, signal converter, coding unit and the required power supply of wireless signal converting unit.
6, according to the described tyre pressure alarm of claim 1, it is characterized in that:
Described signal receiving unit comprises a wireless signal receiving element, a decoding unit, a read out instrument and a second source feeding mechanism;
Described wireless signal receiving element, decoding unit and read out instrument connect successively, and they are connected with described second source feeding mechanism respectively;
Described wireless signal receiving element receives the wireless signal that sends from the wireless signal converting unit of described pressure-sensing transmitter unit;
Described decoding unit is exported the control signal of an expression tire pressure state with the wireless signal of described wireless signal receiving element output through decoding;
Described read out instrument is corresponding with the tire of vehicle, and behind the control signal that receives decoding unit output, the tire pressure state of display of tyre;
Described second source supplying apparatus provides described wireless signal receiving element, decoding unit and the required power supply of read out instrument.
7, according to right 6 described tyre pressure alarms, it is characterized in that:
Described read out instrument is a Liquid Crystal Display (LCD).
8, tyre pressure alarm according to claim 6 is characterized in that:
Described read out instrument comprises the array light-emitting diode.
9, tyre pressure alarm according to claim 1 is characterized in that:
Described signal receiving unit comprises a wireless signal receiving element, a decoding unit, a warning system and a second source feeding mechanism;
Described wireless signal receiving element, decoding unit and warning system connect successively, and they are connected with the second source feeding mechanism respectively;
Described wireless signal receiving element receives the wireless signal of being exported from the wireless signal converting unit of described pressure-sensing transmitter unit;
Described decoding unit is exported the control signal of an expression high pressure conditions or low state with the wireless signal of wireless signal receiving element output through decoding;
Described warning system gives the alarm with speech form behind the control signal that receives decoding unit output;
Described second source feeding mechanism provide wireless signal receiving element, decoding unit and warning system required power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97104209 CN1197014A (en) | 1997-04-21 | 1997-04-21 | Tyre pressure warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97104209 CN1197014A (en) | 1997-04-21 | 1997-04-21 | Tyre pressure warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1197014A true CN1197014A (en) | 1998-10-28 |
Family
ID=5167224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97104209 Pending CN1197014A (en) | 1997-04-21 | 1997-04-21 | Tyre pressure warning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1197014A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101465043B (en) * | 2007-12-20 | 2011-07-20 | 财团法人工业技术研究院 | Screw, bolt and detection system thereof |
| CN102183323B (en) * | 2007-12-20 | 2012-09-05 | 财团法人工业技术研究院 | Fixed element detection system |
-
1997
- 1997-04-21 CN CN 97104209 patent/CN1197014A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101465043B (en) * | 2007-12-20 | 2011-07-20 | 财团法人工业技术研究院 | Screw, bolt and detection system thereof |
| CN102183323B (en) * | 2007-12-20 | 2012-09-05 | 财团法人工业技术研究院 | Fixed element detection system |
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