CN101479120B - A pressure relief device for an inflatable tire - Google Patents
A pressure relief device for an inflatable tire Download PDFInfo
- Publication number
- CN101479120B CN101479120B CN2007800240075A CN200780024007A CN101479120B CN 101479120 B CN101479120 B CN 101479120B CN 2007800240075 A CN2007800240075 A CN 2007800240075A CN 200780024007 A CN200780024007 A CN 200780024007A CN 101479120 B CN101479120 B CN 101479120B
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- CN
- China
- Prior art keywords
- pin
- tire
- pressure
- main body
- section
- 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.)
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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
- B60C29/00—Arrangements of tyre-inflating valves to tyres or rims; Accessories for tyre-inflating valves, not otherwise provided for
- B60C29/06—Accessories for tyre-inflating valves, e.g. housings, guards, covers for valve caps, locks, not otherwise provided for
-
- 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
- B60C29/00—Arrangements of tyre-inflating valves to tyres or rims; Accessories for tyre-inflating valves, not otherwise provided for
- B60C29/06—Accessories for tyre-inflating valves, e.g. housings, guards, covers for valve caps, locks, not otherwise provided for
- B60C29/068—Pressure relief devices, i.e. safety devices for overpressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/20—Check valves specially designed for inflatable bodies, e.g. tyres
Abstract
A pressure relief device (100) for an inflatable tire comprises a body (102) having a chamber (116) therein and pressure relief mechanism for releasing air when the air pressure in the chamber exceeds a first predetermined pressure level. A conduit (108; 208) interconnects an air inlet (110; 210) with an air outlet (112; 212) . The conduit (108; 208) is provided in a pin (104; 204) arranged to slide axially in a passagway (106) in the body, the pin (104; 204) extending from the air inlet (110; 210) to the air outlet (112; 212) and being slidable between a first position in which it cannot release a stem of the tire, and a second position, in which it can release the stem.
Description
Technical field
The present invention relates to a kind of pressure relief device of the pressure relief device that is used for inflatable tire, especially tire for vehicles.This device is used for discharging air or be used for preventing being forced in the tire at the excessive air of its gas replenishment process when the pressure of tire surpasses a certain threshold value from described tire.
Background technology
The various pressure relief devices that are used for inflatable tire have been proposed in the prior art.U.S. Patent No. 3,830,249 disclose a kind of device, and wherein the pressure release ball remains on riding position by the application force that compression spring applies, and the air pressure in tire surpasses setting pressure.When surpassing described setting pressure, the pressure release ball is removed from main body, and superfluous air is discharged from described tire via pressure relief device.
U.S. Patent No. 4,660,590 relate to a kind of inflation pressure regulating control, are provided with the sealing of frictionless deflection basically in the housing of described regulating control, and when the pressure in the tire reached predeterminated level, described regulating control was that described tire is established bypass.The hermetic unit of deflection element be applied to by the combination of spring/ring usually on the described deflection element try hard to recommend into the sealing contact of seating face.When tire has been inflated to the pressure nominal value of described regulating control, the first indoor pressure in the housing will apply enough application forces on the upper surface of described deflection element, so that its part produce deflection and thereby produce the motion of hermetic unit away from described seating face, thereby allow air to discharge via deflation hole.
From U.S. Patent No. 6,125,694 known another kind of devices, its disclose a kind of can with the automatic tire assembly of the interactional sounding report of the valve core rod of preexist on tire pressure release.
WO2005/042277 discloses a kind of pressure relief device that comprises annular elastic element, wherein said elastic element is assemblied in around the outer surface part of described device main body with shrinking, thereby when the air pressure in the main body surpassed predeterminated level, described elastic element was stretched to discharge air.
Summary of the invention
A purpose of the preferred embodiments of the present invention is to provide a kind of failure-free pressure relief device.Another purpose of the preferred embodiments of the present invention provides a kind of device of compactness, and it can reduce the inertia overbalance of the tire that this device is installed with respect to known devices.Another purpose of the preferred embodiments of the present invention provides a kind of pressure relief device of wear-resisting and anti-damage.Another purpose of the preferred embodiments of the present invention provides a kind of device, and this device can be realized variable threshold pressure level, perhaps can make the various embodiment of variable thresholding pressure, keeps lower productive costs simultaneously.
The invention provides a kind of pressure relief device that is used for inflatable tire, comprising:
-inside has the main body of chamber;
-can be connected to the air intake of gas filled device;
-can be connected to the air discharge port of the valve of tire;
-be used for coming the air of self-inflator to import the pipeline of described tire at the gas replenishment process handle of tire;
-being provided in the pin that axially slides in the passage in the described main body, described pin is extended to air discharge port and can and can be discharged between the second place of described valve rod in the primary importance of the valve rod that can not discharge tire by air intake and slides;
-pressure release mechanism is used for discharging air from described chamber when the pressure of described chamber surpasses predeterminated level;
Wherein said pipeline is used as the passage in the described pin.
Because passage is arranged in the described pin, so the cost that this device can be lower production in enormous quantities, this is because for example no longer need independent air duct.
Described pressure release mechanism can comprise the spring element that is arranged in the described main body, and this spring element applies closing force on closure member, thereby makes described closure member open in described predetermined pressure level.Described closure member can comprise first and second portion, and wherein said action of the spring is in first, and the passage that leads to described chamber is closed and sealed to second portion.Described first is preferably made by the material firmer than the material of second portion.Described second portion is preferably elastic body, is for example made by rubber.
Described pressure release mechanism also can comprise the passage that described chamber is connected to external environment condition, and this passage is normally closed under the effect of the described closure member of spring biasing, and described closure member is configured to make the pressure in the described chamber to apply power on described closure member.Described closure member preferably can move by end wise in main body, thereby makes when the pressure in the chamber surpasses predetermined stress level, and described closure member can be raised to separate with its seat.
In one embodiment, described pressure release mechanism comprises the compression spring that extends coaxially with described pin.Described pin can have the diameter littler than the internal diameter of described spring easily, passes described spring thereby described pin is extensible.The distortion of described compression spring is adjustable, to regulate described predetermined pressure level.The possibility of the adjusting of described distortion can be by realizing between two elements that described spring are arranged on distance variable each other.
Described pin preferably is directed in the passage in described main body.In order axially to keep described pin, described pin can have the portion's section that thickens in described main body, portion's section that this thickens is contained in portion's section of the diameter increase in the described passage.
Elastic sealing elements can form sealing between described pin and described passage, described elastic sealing elements is provided under the interior action of air pressure of described main body and engages with described pin and described channel seal.Thereby the failure-free sealing is provided, can have prevented that air is discharged to the entrance area of described device from described chamber.
The base section of main body can be defined in described main body the cavity that the center of described main body for example receives the valve of tire, and the top section of described main body can be suitable for being connected to gas filled device, for example pump or compressor.
In order to protect the pipeline that passes described pin not to be mechanically damaged and dirt, the passage in the described pin can comprise the inlet portion section of horizontal expansion and/or export department's section of horizontal expansion, and they are by the major sections interconnection of longitudinal extension.The inlet portion section of described horizontal expansion preferably is communicated with entrance cavity in the top section of main body, and export department's section of described horizontal expansion preferably is communicated with described chamber.In one embodiment, described pin is open-ended near its arrival end and by first insertion element protection, wherein inlet is formed laterally or the passage of longitudinal extension.Export department's section of horizontal expansion can be configured to the end sections of the described pin that in the inflation of tire process, is used for engaging with the valve rod of tire from a distance, thereby prevent to export on every side more weak zone and other partial engagements relatively.Selectively, described pin can be open-ended near its exit end, second insertion element of the exit end of opening that extends into described pin selectively is provided there, this second insertion element has the external diameter less than the internal diameter of the passage in the described pin, thereby forms the runner of annular between the inwall of described second insertion element and described pin.Described first and second inserts protect described pin not contact dirt and dust.
For preventing the overpressure valve fault, it is desirable to described device and comprise and be used for the fail-safe of guaranteeing that air is discharged from described device, build up in described device to prevent pressure, thereby produce the risk of the tire blow-out that causes described device or be inflated.Wherein a kind of fail-safe can for example comprise a weak point section in main body, the characteristic of this weak point section makes that it breaks when pressure is higher than at least one of described first and second predetermined pressure level.For example, portion's section of the outer wall of described main body can have the thickness that reduces, thereby this wall breaks under specific pressure.
The base section of main body preferably limits one and receives the chamber of valve of tire at described body matter, and this chamber most preferably limits one and is used for described device is threaded onto threaded portion on the threaded portion of tyre valve.The top section of main body can be suitable for the charge valve in the main body is connected to gas filled device, for example the charge of air nozzle.In order to ensure the short longitudinal length of described device, described air duct preferably is provided near the described base section with respect to described chamber dislocation radially.
In order in the gas replenishment process of tire, to remind the user to arrive or to surpass the predetermined threshold value stress level, can provide a kind of air pressure when described chamber in to arrive or the device of the signal of sounding during above predetermined pressure level or send the device of optical signal.In one embodiment, described aud. snl. can be the whistle that produces when the described device of excessive air exhaustion.In case excessive air is discharged, the air-flow of air excess stops, and whistle will stop.Replacedly, can provide for example electronics package of electronic pressure transmitter form, this electronics package is connected to light-emitting device or automatically controlled sound source.
The present invention also provides the external member that comprises a plurality of pressure relief devices, and wherein said device defines different predetermined pressure level.Preferably, each device in the described external member can be discerned easily by the user, thereby each independent device in the described external member can connect with specific stress level.For example, the predetermined threshold pressure level of each device of described external member can be presented on the visible surface of described device.
On the other hand, the present invention also provides the combination of pressure relief device disclosed in this invention and inflatable tire.Described pressure relief device can with inflatable tire, for example the valve rod with described tire for good and all integrates, and is used to form a single-piece unit, perhaps it can detachably be connected to the valve rod of tire.The present invention also provides the wheel rim that is used for inflatable tire, and described wheel rim comprises that according to pressure relief device of the present invention this pressure relief device is selectively integrated with the valve of inflatable tire.In addition, the present invention also provides a kind of wheel that comprises described wheel rim and inflatable tire.
Description of drawings
Now with reference to accompanying drawing the embodiment of pressure relief device of the present invention is described, wherein:
Fig. 1 and 2 has described first embodiment;
Fig. 3 and 4 has described second embodiment;
Fig. 5 has described the 3rd embodiment.
The specific embodiment
Pressure relief device 100 comprises main body 102, is used to discharge the pin 104 of the valve rod of tyre valve (not shown).In pin 104 path 10s 6 that are slidably mounted in the main body.The base section of main body defines the chamber 116 that is used for receiving at the center of described main body the tyre valve (not shown).Insertion element 118 is assembled in the base section of described main body.This insertion element defines the threaded portion 120 that is used for pressure relief device is connected to tyre valve.The air by-pass passage 108 that pin 104 defines longitudinal extension, the end sections 113 of rounding and 115 and the inlet 110 of horizontal expansion and the outlet 112 of horizontal expansion.But pin 104 end wise in path 10 6 slides, and portion's section 107 that the diameter of described path 10 6 increases is held the portion's section 109 that thickens of described pin 104.The upward terminal and lower end of portion's section 107 that described diameter increases defines the range of described pin 104.
Be provided with the pressure release mechanism that comprises compression spring 134 in main body, an end of described compression spring 134 is placed on the described intermediate section 126, and the other end acts on the closure member 136.Described closure member keeps annular elastic closure element 138, and in closing structure shown in Figure 1, described closure member 138 keeps circulation road 140 to close.Selectively, four elastic closure elements 138 are provided.Chamber or chamber 142 are limited between outer segments 130 and the closure member 136, and chamber 142 is communicated with external environment condition by passage 144.Packing element 146 provides sealing between the passage of pin and main body, leak gas unexpectedly along the outside face of described pin preventing.Packing element 146 is arranged to make the air pressure in the chamber 116 to force it and described pin to form sealed engagement.The top part of described main body can form hermetic unit 147 at the place, portion section bottom of for example entrance area 124, and described hermetic unit 147 is arranged such that preferably the inlet pressure in the entrance area 124 forces itself and described pin to form sealed engagement.Replacement as the sealing part can provide independent packing element (not shown).
The operation of pressure relief device is as follows: the threaded portion 120 by insertion element 118 is with the outer surface part threads engage of this device and tyre valve, thereby described tyre valve is housed inside in the chamber 116.Be connected to the gas filled device of pressure source, blast pipe nozzle for example is connected to the top part 122 of main body 102, and the bar (not shown) of described gas filled device is contacted with the upper surface 113 of pin 104.Be pressed downward thereby sell 104, up to the last end in contact of rear surface 115 with the valve rod (not shown) of tire of pin 104, to open tyre valve.Enter the inside of tire via the path 10 in the pin 104 8 from the air of pressure source.Thereby the air pressure in chamber 116 and the circulation road 140 equates basically with tire pressure.Pressure in air duct and the circulation road 140 applies power on closure member 138.When the pressure in circulation road 140 and the tire reached specific threshold level, the power on the closure member 138 of upwards acting on was enough to overcome the power of the downward effect of compression spring 134.Thereby air can be discharged in the external environment condition by circulation road 140, chamber 142 and passage 144.
Described threshold level is by the characteristic of compression spring 134, the face area of closure member 138 and the distortion decision of compression spring.The distortion of compression spring can change by the displacement (rotation) of described top part 122.
Fig. 3 and 4 has described second embodiment according to pressure relief device of the present invention, and Fig. 5 has described the 3rd embodiment.Hereinafter, with the difference of only discussing between the embodiment of the embodiment of Fig. 1 and 2 and Fig. 3-5.In the embodiment of Fig. 3-5, have components identical or carry out under the situation of element of identical function, these elements will be marked with Fig. 1 and 2 in identical Reference numeral.Be appreciated that the description that also will be applicable to Fig. 3-5 above with reference to Fig. 1 and 2 to the description of these elements.The device of Fig. 3-5 and the device of Fig. 1 and 2 are operated in an identical manner.
In the embodiment of Fig. 3-5, pin 204 has open-ended tubular conduit form.First insertion element 206 is arranged in the entrance area 124 to seal the open end of pin 204.Shown in the details among Fig. 4, first insertion element 206 is the inwall of closed upper portion base portion 122 circumferentially at 212 places.The inlet 210 of horizontal expansion is arranged in described first insertion element 206.The relative exit end of pin 204 is provided with second insertion element 214, and this second insertion element 214 has the external diameter littler than the internal diameter of pin 204, thereby the flow pass 212 of an annular is provided.
In the embodiment of Fig. 5, omitted the intermediate section 126 that occurs among the embodiment of Fig. 1-4.Ring-type element 226 selectively is provided, and the height of this ring-type element 226 has determined the distortion of spring 234 and has therefore determined the release threshold pressure of described device.
The outer segments 130 of main body 102 and upper body part 122 can form a single-piece element.
Claims (12)
1. pressure relief device that is used for inflatable tire comprises:
-inside has the main body of chamber;
-can be connected to the air intake of gas filled device;
-can be connected to the air discharge port of the valve of tire;
-be used for coming the air of self-inflator to import the pipeline of described tire at the gas replenishment process handle of tire;
-being provided in the pin that axially slides in the passage in the described main body, described pin is extended to air discharge port and can and can be discharged between the second place of described valve rod in the primary importance of the valve rod that can not discharge tire by air intake and slides;
-pressure release mechanism is used for discharging air from described chamber when the pressure of described chamber surpasses predeterminated level;
Wherein said pipeline is set to the passage in the described pin.
2. device according to claim 1, wherein said pressure release mechanism comprise the spring element that is arranged in the described main body, and this spring element applies closing force on closure member, thereby makes described closure member open in described predetermined pressure level.
3. device according to claim 2, wherein said pressure release mechanism comprises the path that described chamber is connected to external environment condition, this path is normally closed under the effect of described closure member, described closure member is configured such that the pressure in the described chamber applies power with when the power that is applied by the pressure in the described chamber surpasses the counteraction closing force of described pressure release mechanism on described closure member, open described path.
4. device according to claim 3, wherein said spring element are the compression spring that extends coaxially with described pin.
5. device according to claim 4, the distortion of wherein said compression spring is adjustable, to regulate described predetermined pressure level.
6. device according to claim 1, be directed in the passage of wherein said pin in described main body, described pin has the portion's section that thickens, portion's section that this thickens is contained in portion's section of the diameter increase in the described passage, thereby portion's section that described portion's section that thickens and described diameter increase provides the function that axially keeps described pin in described main body.
7. device according to claim 1, wherein said pin is directed in the passage of described main body, and wherein at least one elastic sealing elements forms sealing between described pin and described passage, and described elastic sealing elements is provided in to be forced to described pin and described channel seal under the interior action of air pressure of described main body and engages.
8. device according to claim 1, the passage in the wherein said pin comprise at least one in export department's section of the inlet portion section of horizontal expansion and horizontal expansion.
9. device according to claim 8, export department's section of wherein said horizontal expansion is communicated with described chamber.
10. device according to claim 8, export department's section of wherein said horizontal expansion be arranged to the end sections of described pin at a distance of certain distance, the end sections of wherein said pin is used for engaging with the valve rod of described tire in the gas replenishment process of tire.
11. device according to claim 1, the passage in the wherein said pin is open-ended.
12. an inflatable tire, it comprises pressure relief device according to claim 1.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US80277006P | 2006-05-24 | 2006-05-24 | |
| EP06010893 | 2006-05-24 | ||
| EP06010893.3 | 2006-05-24 | ||
| US60/802,770 | 2006-05-24 | ||
| PCT/DK2007/000246 WO2007134611A1 (en) | 2006-05-24 | 2007-05-24 | A pressure relief device for an inflatable tire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101479120A CN101479120A (en) | 2009-07-08 |
| CN101479120B true CN101479120B (en) | 2011-07-27 |
Family
ID=37232890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800240075A Expired - Fee Related CN101479120B (en) | 2006-05-24 | 2007-05-24 | A pressure relief device for an inflatable tire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101479120B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2787181T3 (en) * | 2014-06-12 | 2020-10-15 | Pietro Fiorentini Spa | Pressure relief valve for a pressure regulator and pressure regulator comprising said pressure relief valve |
| CN106739850B (en) * | 2016-12-29 | 2018-07-20 | 上海为彪汽配制造有限公司 | A kind of tyre pressure adjusting device and tire pressure adjusting method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4660590A (en) * | 1986-08-08 | 1987-04-28 | Kenneth E. Berger | Inflation pressure regulator |
| US6125694A (en) * | 1999-09-22 | 2000-10-03 | Bledsoe; Douglas K. | Circumferentially disposed automatic whistling tire pressure gauge warning and limiting assembly |
| CN2488732Y (en) * | 2001-07-05 | 2002-05-01 | 郭朝风 | Explosion-proof device for car tyre |
| CN2614959Y (en) * | 2003-03-31 | 2004-05-12 | 大捷达实业（深圳）有限公司 | Adjustable pressure tyre inflating connector |
| CN1208568C (en) * | 1999-09-02 | 2005-06-29 | 盛夏阳 | Pressure regulator and method of use |
-
2007
- 2007-05-24 CN CN2007800240075A patent/CN101479120B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4660590A (en) * | 1986-08-08 | 1987-04-28 | Kenneth E. Berger | Inflation pressure regulator |
| CN1208568C (en) * | 1999-09-02 | 2005-06-29 | 盛夏阳 | Pressure regulator and method of use |
| US6125694A (en) * | 1999-09-22 | 2000-10-03 | Bledsoe; Douglas K. | Circumferentially disposed automatic whistling tire pressure gauge warning and limiting assembly |
| CN2488732Y (en) * | 2001-07-05 | 2002-05-01 | 郭朝风 | Explosion-proof device for car tyre |
| CN2614959Y (en) * | 2003-03-31 | 2004-05-12 | 大捷达实业（深圳）有限公司 | Adjustable pressure tyre inflating connector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101479120A (en) | 2009-07-08 |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20110727 Termination date: 20160524 |