US20100175464A1 - Tire pressure detector with the risk of causing a leaky tire - Google Patents
Tire pressure detector with the risk of causing a leaky tire Download PDFInfo
- Publication number
- US20100175464A1 US20100175464A1 US12/366,661 US36666109A US2010175464A1 US 20100175464 A1 US20100175464 A1 US 20100175464A1 US 36666109 A US36666109 A US 36666109A US 2010175464 A1 US2010175464 A1 US 2010175464A1
- Authority
- US
- United States
- Prior art keywords
- base
- tire
- cover
- valve control
- tire pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- 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
-
- 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
- B60C23/0491—Constructional details of means for attaching the control device
- B60C23/0496—Valve stem attachments positioned outside of the tyre chamber
Abstract
A tire pressure detector without the risk of causing a leaky tire includes a base having a forward projected and externally threaded annular wall and an annular limit wall to define an annular groove therebetween; a mating cover having an internally threaded annular wall for screwing to the externally threaded annular wall of the base with a free end of the annular wall received in the annular groove to press against an airtight seal ring set in the annular groove, such that an airtight space is defined in and between the assembled cover and base; a tire pressure detecting assembly being receiving in the airtight space; and a valve control assembly being mounted on the base to locate between the base and the mating cover. The annular limit wall prevents the cover from moving and deforming at the screwed portion to ensure good air-tightness between the cover and the base.
Description
- This application claims priority to Taiwan Application Serial Number 98100765, filed Jan. 9, 2009, which is herein incorporated by reference.
- The present invention relates to a tire pressure detector, and more particularly, to a tire pressure detector that can be connected to a tire valve for detecting tire pressure of a tire without the risk of causing a leaky tire.
- A tire pressure detector is designed for connecting to a tire valve on a tire of a car for detecting tire pressure, so that a user can timely obtain information about the tire pressure to drive the car safely.
-
FIG. 1 is an assembled sectional view of a conventional tire pressure detector, which includes abase 91 having a first end screwed to an outer side of a tire valve, and amating cover 92 screwed to an outer side of an opposite second end of thebase 91 through engagement ofexternal threads 93 on the second end of thebase 91 withinternal threads 94 of thecover 92. Anairtight seal ring 95 is disposed between thebase 91 and themating cover 92 at the screwed portion, so that thebase 91 and thecover 92 screwed to each other together define anairtight space 96 in and between them. All the necessary components of the tire pressure detector, such as a pressure detecting unit for detecting tire pressure, a signal transmitting unit for sending out a signal indicating the detected tire pressure, and a battery for supplying electric power to the pressure detecting unit, are received in theairtight space 96. Moreover, avalve control assembly 97 is fitted in the first end of thebase 91 to locate between thebase 91 and the tire valve. Thevalve control assembly 97 is in contact with the tire valve to thereby normally open the tire valve, allowing air in the tire to flow through the tire valve and thevalve control assembly 97 into theairtight space 96, so that the pressure detecting unit in theairtight space 96 can detect the tire pressure from the air flowed into theairtight space 96. - In the above-structured conventional tire pressure detector, the
cover 92 is connected to thebase 91 through engagement of theinternal threads 93 of thecover 92 with theexternal threads 94 of thebase 91. There is not any limiting element provided outside thecover 92. When thecover 92 deforms due to an external force applied thereto or changes in ambient temperature, a peripheral wall of thecover 92 tends to expand and deform because it is not limited by any means. Thedeformed cover 92 could not air-tightly connect to thebase 91 and gaps will exist between thecover 92 and thebase 91. Air flowed from the tire into theairtight space 96 tends to continuously leak out via these gaps, which forms a threat to the safety in driving the car. - Moreover, the whole tire pressure detector and the tire valve are located outside the tire to expose to external environment. When the tire is impacted by an external force while the car is driving or is parked, the
cover 92 of the tire pressure detector is apt to loosen and finally separate from thebase 91. In the conventional tire pressure detector, thevalve control assembly 97 is mounted on thebase 91 to locate between thebase 91 and the tire valve. In the case thebase 91 of the tire pressure detector is still screwed to the tire valve while thecover 92 has separated from thebase 91, thevalve control assembly 97 mounted on thebase 91 will keep contacting with the tire valve to push the latter open. Under this situation, air in the tire will continuously flow through the tire valve and thevalve control assembly 97 into an open space to cause a leaky tire, which is highly dangerous to a car in moving. - Therefore, the conventional tire pressure detector has low applicability and requires improvement.
- A primary object of the present invention is to provide a tire pressure detector without the risk of causing a leaky tire to ensure safe and practical use thereof.
- To achieve the above and other objects, the tire pressure detector without the risk of causing a leaky tire according to a preferred embodiment of the present invention can be connected to a tire valve on a tire of a car for detecting tire pressure of the tire, and includes a base having a forward projected and externally threaded annular wall and an annular limit wall, which together define an annular groove therebetween; a mating cover having an internally threaded annular wall for correspondingly screwing to the externally threaded annular wall of the base with a free end of the annular wall of the cover received in the annular groove to press against an airtight seal ring set in the annular groove, such that an airtight space is defined in and between the assembled cover and base; a tire pressure detecting assembly being receiving in the airtight space; and a valve control assembly being mounted on the base to locate between the base and the mating cover. The annular limit wall located outside and around the annular wall of the cover helps in maintaining the annular wall of the cover in its original position and shape, and thereby protects the cover against deformation at the screwed portion to ensure good air-tightness between the cover and the base, and prevents air in the tire from leaking out via a joint of the cover and the base.
- Preferably, the airtight seal ring is set in the annular groove corresponding to the free end of the annular wall of the cover, such that when the cover is fully screwed to the base, the free end of the annular wall of the corer can tightly press against the airtight seal ring to ensure good air-tightness between the base and the cover.
- Moreover, the base further has a through hole communicating with the airtight space and a recess formed in one side of the base opposite to the cover to communicate with the through hole. And, the valve control assembly includes a valve control and an airtight gasket. The valve control includes a hollow main body and a flange portion. The main body has an air passage portion and a head portion integrally connected to each other. The air passage portion is fitted in the airtight space, the through hole, and the recess, and the head portion is located in the recess. The head portion has an inner diameter smaller than that of the air passage portion. The flange portion is radially outward extended from an outer periphery of the main body and is located in the airtight space to limit a position of the valve control in the tire pressure detector. The airtight gasket is fitted in the recess between the main body of the valve control and the base to prevent air in the tire from leaking out via the main body of the valve control or the recess of the base. Since the flange portion of the valve control is located in the airtight space to face toward the cover, the valve control will separate from the base and no longer pushes against the tire valve to open the same when the cover is loosened and separated from the base due to an external force. Therefore, the risk of a leaky tire caused by the valve control of the tire pressure detector is eliminated.
- The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein
-
FIG. 1 is an assembled sectional view of a conventional tire pressure detector; -
FIG. 2 is an exploded side view of a tire pressure detector without the risk of causing a leaky tire according to a preferred embodiment of the present invention; -
FIG. 3 is an exploded perspective view of the tire pressure detector ofFIG. 2 with some parts thereof omitted from the drawing; -
FIG. 4 is another exploded perspective view of the tire pressure detector ofFIG. 2 viewed from another angle, also with some parts thereof omitted from the drawing; -
FIG. 5 is an assembled perspective view of the tire pressure detector ofFIG. 2 ; and -
FIG. 6 is an assembled sectional view of the tire pressure detector ofFIG. 2 . - Please refer to
FIGS. 2 through 6 , in which a tire pressure detector without the risk of causing a leaky tire according to a preferred embodiment of the present invention is shown. The tire pressure detector is internally provided with a valve control assembly and is connected to a tire valve (not shown) on a tire of a car to normally push open the tire valve, so that air in the tire can flow via the tire valve and the valve control assembly into the tire pressure detector, allowing a user to detect the tire pressure. - In the illustrated preferred embodiment, the tire pressure detector of the present invention includes an electrically conducting
base 1, amating cover 2, a tirepressure detecting assembly 3, and avalve control assembly 4. - The
base 1 has a forward projectedannular wall 11 withexternal threads 12 provided on an outer wall surface thereof, and anannular limit wall 13 located outside the projectedwall 11, such that anannular groove 14 is defined between thelimit wall 13 and the projectedwall 11. - The
cover 2 has anannular wall 21 corresponding to the projectedwall 11 of thebase 1 and is provided on an inner wall surface withinternal threads 22, such that thecover 2 can be screwed to the projectedwall 11 of thebase 1 via engagement of theinternal threads 22 with theexternal threads 12. When thecover 2 has been fully screwed to thebase 1, a free end of theannular wall 21 of thecover 2 is received in theannular groove 14 on thebase 1. That is, theannular limit wall 13 on thebase 1 is located outside theannular wall 21 of thecover 2 when thecover 2 has been fully screwed to thebase 1. - An
airtight seal ring 23 is set between thebase 1 and themating cover 2 at the screwed portion. For example, theairtight seal ring 23 can be set in theannular groove 14, such that when thecover 2 is fully screwed to thebase 1, the free end of theannular wall 21 of thecover 2 is tightly pressed against theairtight seal ring 23 to further ensure an airtight relation between thebase 1 and thecover 2. After thecover 2 has been fully screwed to thebase 1, anairtight space 24 is defined in and between them. - When the
cover 2 has been screwed to thebase 1, theannular limit wall 13 is located outside theannular wall 21 of thecover 2 to help in maintaining theannular wall 21 in its original position and shape. Therefore, theannular wall 21 for screwing to thebase 1 is not easily subjected to deformation due to pressure applied thereto or changes in ambient temperature and a good airtight relation can be ensured between thecover 2 and thebase 1 at the screwed portion. With these arrangements, the risk of having a leaky tire due to the tire pressure detector mounted thereto is eliminated. That is, the tire pressure detector according to the present invention is safe for use and provides good applicability. - The
base 1 further has a throughhole 15 communicating with theairtight space 24, and arecess 16 formed in one side of thebase 1 opposite to thecover 2 and communicating with the throughhole 15. - In an operable embodiment of the present invention, the tire
pressure detecting assembly 3 includes a first conductingelastic element 31, abattery 32, a tirepressure detecting unit 33, a second conductingelastic element 34, and aninsulating sleeve 35. The whole tirepressure detecting assembly 3 is received in theairtight space 24. More specifically, the first conductingelastic element 31 is located in theairtight space 24 between a top of the throughhole 15 and thebattery 32 to always maintain good electric connection of thebattery 32 to thebase 1 while allowing air in the tire to smoothly flow through the throughhole 15 into theairtight space 24. Thebattery 32 is electrically connected at a negative electrode to thebase 1, and at a positive electrode to the tirepressure detecting unit 33 via the second conductingelastic element 34. With these arrangements, thebattery 32 can supply power to the tirepressure detecting unit 33. The tirepressure detecting unit 33 includes a circuit board, on which a pressure detecting means, a temperature detecting means, a microprocessor, a signal transmitter, etc. are mounted to electrically connect to the circuit board. Since these components are known in the art, they are not discussed in details herein. The second conductingelastic element 34 is located between thebattery 32 and the tirepressure detecting unit 33 to stably hold thebattery 32 in place and enable good electric connection of thebattery 32 to the tirepressure detecting unit 33. The insulatingsleeve 35 is fitted around thebattery 32 to locate between thebattery 32 and thebase 1, so as to prevent any sideward electrical contact of thebattery 32 with thebase 1. - However, it is to be noted the tire
pressure detecting assembly 3 is not limited to the components disclosed in the illustrated preferred embodiment, but can have different structure and components according to actual need. - Please refer to
FIGS. 2 , 3, 4, and 6 at the same time. Thevalve control assembly 4 includes avalve control 41 and anairtight gasket 42. - The
valve control 41 has a hollowmain body 411 and aflange portion 412. - The
main body 411 includes anair passage portion 413 and ahead portion 414 that are integrally connected to each other. Theair passage portion 413 is fitted in theairtight space 24, the throughhole 15, and therecess 16. Thehead portion 414 is located in therecess 16, and has an inner diameter smaller than that of theair passage portion 413 for correspondingly pressing against a valve needle in the tire valve (not shown), so that air in the car tire can flow through the tire valve, thehead portion 414, and theair passage portion 413 into theairtight space 24. - The
flange portion 412 is radially outward extended from an outer periphery of themain body 411, and is located in theairtight space 24. Theflange portion 412 has a cross-sectional area larger than a diameter of the throughhole 15 and can therefore restrict a position of themain body 411 in thebase 1. That is, thevalve control 41 is assembled to the throughhole 15 on thebase 1 from the side with theairtight space 24, so that theflange portion 412 is stopped by the throughhole 15 from moving into therecess 16 but to locate in theairtight space 24 above the throughhole 15. - The
airtight gasket 42 is fitted in therecess 16 to be tightly held between themain body 411 and thebase 1, so as to prevent air in the car tire from leaking out via themain body 411 or therecess 16 of thebase 1. - With the above mechanism design of the
valve control assembly 4, thevalve control 41 has aflange portion 412 with a relatively larger outer diameter, and theflange portion 412 is located in theairtight space 24 to face toward thecover 2. When the tire is impacted by an external force while the car is moving or is parked, and thecover 2 of the tire pressure detector becomes loosened and separated from thebase 1 under the impact, the components received in theairtight space 24, including thevalve control 41, will separate from theairtight space 24 via an open top of thebase 1 that is no longer closed by thecover 2. At this point, the valve needle in the tire valve corresponding to that tire pressure detector is no longer pushed by thehead portion 414 of thevalve control 41 and thereby returns to a closed state. Therefore, the risk of a leaky tire caused by thevalve control 41 can be avoided, making the tire pressure detector of the present invention safe and practical for use. - The present invention has been described with a preferred embodiment thereof and it is understood that many changes and modifications in the described embodiment can be carried out without departing from the scope and the spirit of the invention that is intended to be limited only by the appended claims.
Claims (4)
1. A tire pressure detector without the risk of causing a leaky tire, being connected to a tire valve on a tire of a car for detecting tire pressure of the tire, comprising:
a base having a forward projected and externally threaded annular wall, an annular limit wall located outside and around the forward projected annular wall, and an annular groove formed between the annular limit wall and the forward projected annular wall;
a mating cover having an internally threaded annular wall corresponding to the forward projected and externally threaded annular wall of the base, such that the cover can be tightly screwed to the base with a free end of the annular wall of the cover received in the annular groove; and the cover and the base screwed to each other having an airtight seal ring set therebetween at the screwed portion, so that an airtight space can be defined in and between them;
a tire pressure detecting assembly being received in the airtight space; and
a valve control assembly being mounted on the base to locate between the base and the cover.
2. The tire pressure detector without the risk of causing a leaky tire as claimed in claim 1 , wherein the airtight seal ring is set in the annular groove corresponding to the free end of the annular wall of the cover having been fully screwed to the base.
3. The tire pressure detector without the risk of causing a leaky tire as claimed in claim 1 , wherein the base further has a through hole communicating with the airtight space and a recess formed in one side of the base opposite to the mating cover and communicating with the through hole, and the valve control assembly includes a valve control and an airtight gasket;
the valve control including:
a hollow main body having an air passage portion and a head portion being integrally connected to each other; the air passage portion being fitted in the airtight space, the through hole, and the recess; the head portion being located in the recess and having an inner diameter smaller than that of the air passage portion; and
a flange portion being radially outward extended from an outer periphery of the main body and being located in the airtight space for restricting a position of the main body in the base; and
the airtight gasket being fitted in the recess to be tightly held between the main body of the valve control and the base, so as to prevent air in the car tire from leaking out via the main body of the valve control or the recess of the base.
4. The tire pressure detector without the risk of causing a leaky tire as claimed in claim 2 , wherein the base further has a through hole communicating with the airtight space and a recess formed in one side of the base opposite to the mating cover and communicating with the through hole, and the valve control assembly includes a valve control and an airtight gasket;
the valve control including:
a hollow main body having an air passage portion and a head portion being integrally connected to each other;
the air passage portion being fitted in the airtight space, the through hole, and the recess; the head portion being located in the recess and having an inner diameter smaller than that of the air passage portion; and
a flange portion being radially outward extended from an outer periphery of the main body and being located in the airtight space for restricting a position of the main body in the base; and
the airtight gasket being fitted in the recess to be tightly held between the main body of the valve control and the base, so as to prevent air in the car tire from leaking out via the main body of the valve control or the recess of the base.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW98100765A | 2009-01-09 | ||
TW098100765A TW201026525A (en) | 2009-01-09 | 2009-01-09 | Leakage prevention tire pressure detector |
TW98100765 | 2009-01-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
US7743652B1 US7743652B1 (en) | 2010-06-29 |
US20100175464A1 true US20100175464A1 (en) | 2010-07-15 |
Family
ID=42271087
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/366,661 Active 2029-03-02 US7743652B1 (en) | 2009-01-09 | 2009-02-06 | Tire pressure detector without the risk of causing a leaky tire |
Country Status (2)
Country | Link |
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US (1) | US7743652B1 (en) |
TW (1) | TW201026525A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013108749A1 (en) * | 2013-08-13 | 2015-02-19 | Huf Hülsbeck & Fürst Gmbh & Co. Kg | Sensor device for detecting and wireless transmission of tire pressure |
TWI625253B (en) * | 2017-04-17 | 2018-06-01 | 耀登科技股份有限公司 | Bicycle tire pressure detector |
US11293565B2 (en) | 2018-11-01 | 2022-04-05 | Illinois Tool Works Inc. | Pressure airlock |
CN113070556A (en) * | 2021-03-25 | 2021-07-06 | 安徽马钢设备检修有限公司 | Rapid welding repair structure and repair process for foundation connecting screw of large hydraulic press |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7251993B1 (en) * | 2005-12-27 | 2007-08-07 | Pacific Industrial Co., Ltd. | Tire information communication system |
US7317381B2 (en) * | 2002-08-30 | 2008-01-08 | Bridgestone Corporation | Wheel condition monitoring system |
US7421891B2 (en) * | 2006-04-19 | 2008-09-09 | Pacific Industrial Co., Ltd. | Tire monitor radio circuit and tire monitor system |
US7509969B2 (en) * | 2005-07-28 | 2009-03-31 | Teng-Wen Huang | Two-way check valve |
US7565832B2 (en) * | 2005-08-31 | 2009-07-28 | Teng-Wen Huang | Tire pressure monitor |
-
2009
- 2009-01-09 TW TW098100765A patent/TW201026525A/en unknown
- 2009-02-06 US US12/366,661 patent/US7743652B1/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7317381B2 (en) * | 2002-08-30 | 2008-01-08 | Bridgestone Corporation | Wheel condition monitoring system |
US7509969B2 (en) * | 2005-07-28 | 2009-03-31 | Teng-Wen Huang | Two-way check valve |
US7565832B2 (en) * | 2005-08-31 | 2009-07-28 | Teng-Wen Huang | Tire pressure monitor |
US7251993B1 (en) * | 2005-12-27 | 2007-08-07 | Pacific Industrial Co., Ltd. | Tire information communication system |
US7421891B2 (en) * | 2006-04-19 | 2008-09-09 | Pacific Industrial Co., Ltd. | Tire monitor radio circuit and tire monitor system |
Also Published As
Publication number | Publication date |
---|---|
US7743652B1 (en) | 2010-06-29 |
TW201026525A (en) | 2010-07-16 |
TWI363706B (en) | 2012-05-11 |
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