CN101074009B - Tyre digital gas-filling meter - Google Patents
Tyre digital gas-filling meter Download PDFInfo
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- CN101074009B CN101074009B CN200610026598A CN200610026598A CN101074009B CN 101074009 B CN101074009 B CN 101074009B CN 200610026598 A CN200610026598 A CN 200610026598A CN 200610026598 A CN200610026598 A CN 200610026598A CN 101074009 B CN101074009 B CN 101074009B
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- housing
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Abstract
The invention is concerned with a charge meter for tire with number display. It relates to rubber component for charge, shell cover, charge component, the first spring, press-sensing part, discharge component, handle, air intake component, the second spring, shell. The said charge component and air intake component are inside of the shell in turn and the centerlines of them are coincidence. The said air intake component relates to air close pipe, air intake tie-in. The rubber component for charge connects with the back end of charge component and the said first spring is on the charge component and there is some distance between the front of charge component and the back end of air close pipe. The front of air close pipe connects with air intake component through the second spring. The press-sensing part is inside of the space formed by shell and shell cover. The discharge component and handle are on the shell. It is easy for production with low cost, credible stability, large sensitivity, easy switch of unit and without error of vision.
Description
Technical field
The present invention relates to a kind of Tire Inflation System, particularly relate to a kind of tyre digital gas-filling meter.
Background technology
Existing inflation table, the thread-forming screws that adopt are fixed on mode on the housing with the pressure-sensitive cabin more, the shortcoming of this fixed form is that the fastening force that adopts thread-forming screw can offer the pressure-sensitive cabin is not very big, adopts the inflation table of this connection mode just can not use safely when the off-the-road tyre of giving big pressure is gas filed.Thread-forming screw is dismantled several times, and its self tapping hole just will be destroyed, and cause the obvious decline of pressure-sensitive cabin fastening force, even cause scrapping of whole housing, repair demolition is a unavoidable problem in the production, and the pressure-sensitive cabin of this structure can cause the condemnation factor of housing than higher, increases production cost.Existing pointer inflation table adopts mechanical system to gather pressure, and is low to the pressure variation sensitivity; The collimation error that pointer indicating graduation dish reading can produce when inclination of sighting line causes reading inaccurate; The minimum scale reading is 0.1BAR; So it is low that the pointer inflation table has precision, to shortcomings such as collecting part part machinework accuracy requirement height.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of tyre digital gas-filling meter for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions:
Tyre digital gas-filling meter, comprise inflating head India rubber tube parts, case lid, inflate parts, spring one, pressure-sensitive parts, parts, handle, air inlet component, spring two and housing lose heart, the described parts, air inlet component of inflating are located in the housing successively, and line of centers coincides separately; Described air inlet component comprises close tracheae and inlet suction port; Described inflating head India rubber tube parts with inflate the rear end of parts and be connected, described spring one is located at and is inflated on the parts, this is inflated and leaves certain distance between the rear end of the front end of parts and close tracheae, and the front end of described close tracheae is connected with inlet suction port by spring two; Described pressure-sensitive parts are located in housing and the formed closed space of case lid; Described disappointing parts, handle are located on the housing; Air pressure is gathered, handles, shown to described air inflation indicator by the pressure-sensitive parts; Described rear end of inflating parts is provided with o-ring groove, O RunddichtringO, and the sealing circle is located in the o-ring groove; Described pressure-sensitive parts comprise digital display parts and pressure-sensitive cabin; Described digital display parts comprise micro controller system, mainboard PCB, LCD display, blue backlight and unit change-over switch, described pressure-sensitive cabin is connected by winding displacement with mainboard PCB, described micro controller system encapsulation is bundled on the mainboard PCB, described LCD display is weldingly fixed on the mainboard PCB by the pin straight cutting, it is characterized in that, described pressure-sensitive cabin comprises pressure-sensitive cabin housing, O-ring seal, pressure switch, pressure sensor and seal gasket, described pressure-sensitive cabin housing is screw-like, its double-screw bolt partly is provided with screw thread, the upper end in pressure-sensitive cabin is provided with annular recess, described pressure switch, pressure sensor is located in the housing of pressure-sensitive cabin, described O-ring seal is located in the annular recess of pressure-sensitive cabin housing, and be close to mainboard PCB, the lower end that described seal gasket is sheathed on the pressure-sensitive cabin is exposed to the outer part of pressure-sensitive cabin housing; Described housing is provided with the screw that is complementary with pressure-sensitive cabin housing screw thread, and is connected with pressure-sensitive cabin housing by screw thread, is provided with and inflates the corresponding gas port of O RunddichtringO of parts in this housing.
Described micro controller system comprises op amp, eight bit resolution A and D converters, microprocessor, lcd driver and I/O port; This micro controller system comprises TG2534.
High level on described unit change-over switch one termination, the other end connects the I/O port of micro controller system.
The rear end of described close tracheae is provided with rubber pad groove, close gas rubber pad, and this close gas rubber pad is located in the rubber pad groove.
Described air inflation indicator: the pressurized air in tire is communicated with the pressure-sensitive cabin by gas port, and pressurized air makes the pressure switch conducting, and micro controller system transfers mode of operation to from sleep state, and providing pulsewidth simultaneously is that the pulse power of 3V is given the pressure-sensitive parts for the 22ms amplitude; The force value that the sensor acquisition tire is current also converts 0 ± 40mV～70 ± 40mV raw voltage values output to; Op amp composition differential amplifier circuit amplifies 40 times to raw voltage values makes voltage between 0～2.8V, becomes the level that the A/D conversion is complementary; At this moment microprocessor is opened A and D converter, converts analog voltage signal to digital signal; Microprocessor outputs to lcd driver after the digital signal that converts to is changed the decimal scale through hexadecimal system again; Lcd driver is sent to com port and SEG mouth to the corresponding waveform signal of decimal data respectively, shows the relevant pressure value on LCD display; This moment, microprocessor sent the control signal of opening blue backlight, and backlight is bright; Can the flicking unit of touching change-over switch, click and show BAR, click and show PSI, click and show KPA, circulation successively more again; After gas port was by the sealing of O RunddichtringO, residual gas released from the parts that lose heart, and pressure switch disconnects, and system preserves the unit of display, and next time, start showed the unit that used last time, then entered sleep state.
Adopt the produced tyre digital gas-filling meter of above technical scheme, compared with prior art have with inferior advantage:
1. easy for installation, be convenient to produce, can enhance productivity.
2. dismounting can not cause housing to scrap or reduce the situation generation of the safety of product many times yet, can not influence the normal use of product yet, has reduced production cost.
3. connection is very solid and reliable, and fastening force is far longer than the connection mode with thread-forming screw.
4. adopts pressure sensor is gathered air pressure, has the pressure variation sensitivity big; Least reading is 0.05BAR;
5. pressure value LCD shows, can not produce the collimation error;
6.LCD the reading that provides backlight throws light on;
7. the user of three kinds of units (BAR, PSI, KPA) can be switched arbitrarily.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Wherein: 1-inflating head India rubber tube parts, the 2-case lid, 3-inflates parts, 4-spring one, 5-pressure-sensitive parts, the 6-parts that lose heart, 7-handle, the close tracheae of 8-, 9-air inlet component, 10-spring two, 11-housing, 12-inlet suction port;
Fig. 2 is a pressure-sensitive block construction scheme drawing of the present invention;
Wherein: 13-mainboard PCB, 14-O-ring seal, 15-pressure switch, 16-pressure-sensitive cabin, 17-pressure-sensitive cabin housing, 18-seal gasket, 19-screw thread;
Fig. 3 is the constructional drawing of the pressure-sensitive parts of existing inflation table;
Fig. 4 is a local structure for amplifying scheme drawing of the present invention;
Wherein: 20-O RunddichtringO, 21-gas port, the close gas rubber pad of 22-;
Fig. 5 is the block diagram of pressure-sensitive parts of the present invention;
Fig. 6 is the structural representation of digital display parts of the present invention;
Wherein: 23-digital display parts, 24-micro controller system, 25-LCD read-out, 26-backlight, 27-unit's change-over switch.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
As Fig. 1～shown in Figure 4, present embodiment digital display air inflation indicator when its inlet suction port partly connects source of the gas, is pressed lower handle 7 this moment, handle 7 will drive inflates parts 3 and moves right, when inflating behind the parts 3 motion certain distances, will run into close tracheae 8, if this moment, handle 7 continued to press, inflating parts 3 will be with close tracheae 8 jack-up, this moment, source of the gas just was communicated with tire, and the pressurized air in the source of the gas just enters tire, inflation of tire.Work as release handle, inflate parts 3 under the effect of spring one 4 elastic force, will be to left movement, this moment, close tracheae 8 also will be to left movement under the effect of spring 2 10, when close tracheae 8 certain distance that moved, close gas rubber pad 22 on the close tracheae 8 is with after housing 11 contacts, the break path of source of the gas and tire of close tracheae 8, and this moment, source of the gas can not be given inflation of tire.When inflating parts 3 under the effect of spring one 4 elastic force, when the O RunddichtringO 20 on the parts 3 of inflating strides across gas port 21 and is in gas port 21 left sides, pressurized air in the tire is communicated with pressure-sensitive cabin 16 by gas port 21, this moment, pressurized air made pressure switch 15 conductings, pressure sensing chip is gathered force value at this moment, the force value of gathering is gathered, is handled by the pressure-sensitive parts, and is presented on the liquid crystal display.
What the pressure-sensitive parts 5 of present embodiment adopted is helicitic texture, screw thread is made in lower end in pressure-sensitive cabin 16, also do the screw thread that is complementary in the corresponding installation site on the housing 11, pressure-sensitive cabin 16 need only screw in pressure-sensitive cabin 16 in the housing 11 in the process of assembling, pinch-off seal rubber cushion 18, this installation step and finishing, very convenient, be convenient to produce.The structure of the electronics air-pressure gauge pressure-sensitive part on the market adopts thread-forming screw that the pressure-sensitive cabin is fixed on the housing usually as shown in Figure 3 usually now, in the process of assembling, leans on the structure of thread-forming screw itself to pierce in the housing, reaches the purpose that compresses the pressure-sensitive cabin.Because thread-forming screw be installed in the pressure-sensitive cabin around, in order to guarantee to compress equilibrium of forces, need usually so just make the assembling in pressure-sensitive cabin cumbersome with three to four thread-forming screws; And owing to be subjected to the restriction of product space, the thread-forming screw of selecting for use can not select very greatly, and the tightening force of thread-forming screw is original just less than other screw connecting mode, so this constructed products wants to improve the safe reliability of product pressure-sensitive part, just can only increase tightening force by several thread-forming screws of many increases; Also because thread-forming screw is to rotate by self to shoot in the housing, so such connection structure dismounting several times, housing just will be scrapped probably.The structure of one screw self is just made in the pressure-sensitive cabin of present embodiment, so screw thread just can be done very greatly, and has also done screw thread on housing, on housing, do corresponding thread pore structure, the pressure-sensitive cabin directly screws in the housing in the process of installing, and installs simple and convenient.And because screw thread is made on the whole pressure-sensitive cabin, screw thread can be done the same with the pressure-sensitive cabin basically greatly, and the structure of major thread can provide failure-free connection mode as safe as a house.Because screw thread and the screw thread on the housing on the pressure-sensitive cabin all are ready-made in advance, it or not the connection mode of self tapping, so pressure-sensitive cabin of this structure, dismounting can not cause housing to scrap or reduce the situation generation of the safety of product many times yet, can not influence the normal use of product, so such connection mode is very solid and reliable yet.
As Fig. 5, shown in Figure 6, pressure-sensitive cabin 16 parts of present embodiment mainly are made up of pressure sensor, pressure switch, O-ring seal and pressure-sensitive cabin housing, have the pressure of collection and arousal function; Microchip inside is integrated with op amp, 8 bit resolution A and D converters, microprocessor and lcd driver; LCD display has three kinds of pressure display modes (BAR, KPA and PSI), selects as required a kind of data display to be come out; Blue backlight makes things convenient for user's reading when light is dark; Unit switches, and is made up of touch-switch.High level on touch-switch one termination, the other end connects the I/O port of microprocessor, click the switch I/O port and receive a high level, microprocessor is judged any unit of selection by the number of times of record high level, number of times is that three multiple is then selected BAR, number of times is how three multiple once then selects PSI, and number of times is that three many twice of multiple is selected KPA.
Chip TG2534 is in sleep state under the normal circumstances, pressure switch is connected system and is transferred mode of operation to from sleep state when pressure-sensitive cabin contact tire tube valve tire pressure, and to provide pulsewidth be the total system work of feeding of the pulse power of 3V for the 22ms amplitude to chip TG2534 simultaneously. and the current force value of sensor acquisition tire converts 0 ± 40mV～70 ± 40mV raw voltage values output to; Op amp is formed differential amplifier circuit makes the raw voltage values amplification voltage between 0～2.8V for 40 times, becomes the level that the A/D conversion is complementary; At this moment microprocessor is opened A and D converter, converts analog voltage signal to digital signal; Microprocessor outputs to lcd driver after the digital signal that converts to is changed 10 systems through 16 systems again; Lcd driver is sent to com port and SEG mouth to the corresponding waveform signal of 10 system data respectively, shows the relevant pressure value on LCD display; This moment, microprocessor sent the control signal of opening blue backlight, and backlight is bright; At this moment the user can flicking touch-switch selection unit, click and show BAR, click and show PSI, click and show KPA more again, circulation successively. after tire tube valve is left in the pressure-sensitive cabin, pressure switch disconnects, system's preservation unit of display (next time, start showed the unit that used last time) then enters sleep state. the following periodical duty.
The pressure-sensitive cabin is connected with mainboard PCB by winding displacement, and micro controller system selects for use nude film encapsulation nation to fix on the mainboard PCB, and LCD display and backlight are weldingly fixed on the mainboard PCB by the pin straight cutting, and the unit change-over switch is welded on the mainboard PCB.
Pressure-sensitive cabin 16 and mainboard 13 are connected by lead; Pressure signal and wake-up signal that pressure-sensitive cabin 16 is picked up are sent to mainboard 13; Micro controller system 24 receives wake-up signal and enters mode of operation from sleep state, and LCD display 25 shows force value, and backlight 26 is bright simultaneously; Flicking once 27 LCD displays 25 of unit change-over switch shows that the force value of commensurate does not supply user's reading.
Claims (5)
1. tyre digital gas-filling meter, comprise inflating head India rubber tube parts, case lid, inflate parts, spring one, pressure-sensitive parts, parts, handle, air inlet component, spring two and housing lose heart, the described parts, air inlet component of inflating are located in the housing successively, and line of centers coincides separately; Described air inlet component comprises close tracheae and inlet suction port; Described inflating head India rubber tube parts with inflate the rear end of parts and be connected, described spring one is located at and is inflated on the parts, this is inflated and leaves certain distance between the rear end of the front end of parts and close tracheae, and the front end of described close tracheae is connected with inlet suction port by spring two; Described pressure-sensitive parts are located in housing and the formed closed space of case lid; Described disappointing parts, handle are located on the housing; Air pressure is gathered, handles, shown to described air inflation indicator by the pressure-sensitive parts; Described rear end of inflating parts is provided with o-ring groove, O RunddichtringO, and the sealing circle is located in the o-ring groove; Described pressure-sensitive parts comprise digital display parts and pressure-sensitive cabin; Described digital display parts comprise micro controller system, mainboard PCB, LCD display, blue backlight and unit change-over switch, described pressure-sensitive cabin is connected by winding displacement with mainboard PCB, described micro controller system encapsulation is bundled on the mainboard PCB, described LCD display is weldingly fixed on the mainboard PCB by the pin straight cutting, it is characterized in that, described pressure-sensitive cabin comprises pressure-sensitive cabin housing, O-ring seal, pressure switch, pressure sensor and seal gasket, described pressure-sensitive cabin housing is screw-like, its double-screw bolt partly is provided with screw thread, the upper end in pressure-sensitive cabin is provided with annular recess, described pressure switch, pressure sensor is located in the housing of pressure-sensitive cabin, described O-ring seal is located in the annular recess of pressure-sensitive cabin housing, and be close to mainboard PCB, the lower end that described seal gasket is sheathed on the pressure-sensitive cabin is exposed to the outer part of pressure-sensitive cabin housing; Described housing is provided with the screw that is complementary with pressure-sensitive cabin housing screw thread, and is connected with pressure-sensitive cabin housing by screw thread, is provided with and inflates the corresponding gas port of O RunddichtringO of parts in this housing.
2. tyre digital gas-filling meter according to claim 1 is characterized in that, described micro controller system comprises op amp, eight bit resolution A and D converters, microprocessor, lcd driver and I/O port; This micro controller system comprises TG2534.
3. tyre digital gas-filling meter according to claim 1 and 2 is characterized in that, high level on described unit change-over switch one termination, and the other end connects the I/O port of micro controller system.
4. tyre digital gas-filling meter according to claim 3 is characterized in that, the rear end of described close tracheae is provided with rubber pad groove, close gas rubber pad, and this close gas rubber pad is located in the rubber pad groove.
5. tyre digital gas-filling meter according to claim 4, it is characterized in that, described air inflation indicator: the pressurized air in tire is communicated with the pressure-sensitive cabin by gas port, pressurized air makes the pressure switch conducting, micro controller system transfers mode of operation to from sleep state, and providing pulsewidth simultaneously is that the pulse power of 3V is given the pressure-sensitive parts for the 22ms amplitude; The force value that the sensor acquisition tire is current also converts 0 ± 40mV～70 ± 40mV raw voltage values output to; Op amp composition differential amplifier circuit amplifies 40 times to raw voltage values makes voltage between 0～2.8V, becomes the level that the A/D conversion is complementary; At this moment microprocessor is opened A and D converter, converts analog voltage signal to digital signal; Microprocessor outputs to lcd driver after the digital signal that converts to is changed the decimal scale through hexadecimal system again; Lcd driver is sent to com port and SEG mouth to the corresponding waveform signal of decimal data respectively, shows the relevant pressure value on LCD display; This moment, microprocessor sent the control signal of opening blue backlight, and backlight is bright; Can the flicking unit of touching change-over switch, click and show BAR, click and show PSI, click and show KPA, circulation successively more again; After gas port was by the sealing of O RunddichtringO, residual gas released from the parts that lose heart, and pressure switch disconnects, and system preserves the unit of display, and next time, start showed the unit that used last time, then entered sleep state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610026598A CN101074009B (en) | 2006-05-17 | 2006-05-17 | Tyre digital gas-filling meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610026598A CN101074009B (en) | 2006-05-17 | 2006-05-17 | Tyre digital gas-filling meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101074009A CN101074009A (en) | 2007-11-21 |
| CN101074009B true CN101074009B (en) | 2010-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610026598A Expired - Fee Related CN101074009B (en) | 2006-05-17 | 2006-05-17 | Tyre digital gas-filling meter |
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| Country | Link |
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| CN (1) | CN101074009B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114379296B (en) * | 2022-03-24 | 2022-06-24 | 深圳市其利天下技术开发有限公司 | Tire pressure meter |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4998438A (en) * | 1990-05-22 | 1991-03-12 | Martin Jerry L | Digital air pressure gauge and inflation device |
| CN2134324Y (en) * | 1992-08-01 | 1993-05-26 | 林永波 | Inflation pressure detecting gun |
| CN2171513Y (en) * | 1993-06-22 | 1994-07-13 | 许崇连 | Three-purpose joint for gasing of bicycle |
| CN2172220Y (en) * | 1993-09-30 | 1994-07-20 | 武庆瑞 | Tyre inflating controller |
| CN2441130Y (en) * | 2000-09-08 | 2001-08-01 | 陈万宝 | Structure of fetal pressure meter |
| CN2666759Y (en) * | 2003-12-18 | 2004-12-29 | 曹金鼎 | Gun for fast supplying air for tyre inflation |
| CN2740496Y (en) * | 2004-09-20 | 2005-11-16 | 合勤电器（深圳）有限公司 | Digital pneumatic system |
-
2006
- 2006-05-17 CN CN200610026598A patent/CN101074009B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4998438A (en) * | 1990-05-22 | 1991-03-12 | Martin Jerry L | Digital air pressure gauge and inflation device |
| CN2134324Y (en) * | 1992-08-01 | 1993-05-26 | 林永波 | Inflation pressure detecting gun |
| CN2171513Y (en) * | 1993-06-22 | 1994-07-13 | 许崇连 | Three-purpose joint for gasing of bicycle |
| CN2172220Y (en) * | 1993-09-30 | 1994-07-20 | 武庆瑞 | Tyre inflating controller |
| CN2441130Y (en) * | 2000-09-08 | 2001-08-01 | 陈万宝 | Structure of fetal pressure meter |
| CN2666759Y (en) * | 2003-12-18 | 2004-12-29 | 曹金鼎 | Gun for fast supplying air for tyre inflation |
| CN2740496Y (en) * | 2004-09-20 | 2005-11-16 | 合勤电器（深圳）有限公司 | Digital pneumatic system |
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| Publication number | Publication date |
|---|---|
| CN101074009A (en) | 2007-11-21 |
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Granted publication date: 20100512 Termination date: 20190517 |