CN111942088B

CN111942088B - Valve set for tyre air valve

Info

Publication number: CN111942088B
Application number: CN202010285675.0A
Authority: CN
Inventors: 苏清林
Original assignee: Kunshan Fuluo Auto Parts Co ltd
Current assignee: Kunshan Fuluo Auto Parts Co ltd
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2022-04-05
Anticipated expiration: 2040-04-13
Also published as: CN111942088A

Abstract

The invention discloses a tire air nozzle valve group which comprises a blowing nozzle structure, a movable rod, an air pipe, an elastic sealing pad, a nut, an elastic O-shaped ring and a dustproof cap. The tire valve set of the invention can utilize the perforation on the tail end of the movable rod to contain the tire repair liquid flowing into the vent pipe. The movable rod is taken out during maintenance to remove the tire repair liquid in the through hole. When the movable rod is inserted into the vent pipe again, the tire repair liquid remaining on the inner wall of the vent pipe is also pushed out of the vent pipe. Therefore, the tire repair liquid can not block the tire air valve bank.

Description

Valve set for tyre air valve

Technical Field

The invention relates to a tire valve set, in particular to a tire valve set which is used on a wheel frame of a bicycle without an inner tube and allows tire repair liquid to enter a tire for repairing without being blocked by the tire repair liquid.

Background

The bicycle is one of the main transportation means for people to ride instead of walk. Because the bicycle does not consume energy in running, the bicycle is beneficial to environmental protection, and can also achieve the other purpose of physical exercise of people using the bicycle. Although convenient, the bicycle is damaged by being used carelessly, which may cause a burden when people go out, such as tire burst caused by sharp objects. Therefore, in addition to the following repair or replacement of a new tire by sending a broken bicycle to a vehicle, it has become popular in recent years to repair small holes using a tire repair liquid to reduce the trouble caused by unexpected tire burst. The tire repair liquid is a liquid mixture composed of various high molecular compounds, different fine rubbers or fibers and the like, and is filled into the tire through an air valve of the wheel frame. When a hole is formed in the tire, the tire repair liquid permeates into the hole, contacts with air and is rapidly solidified to repair the hole.

Because the tire repair liquid has certain viscosity and solidification possibility, when the air valve is repeatedly used for inflating the tire, the tail end of the air valve is affected by the tire repair liquid to be reduced, the air inflow is reduced, and even the air valve is blocked, so that the air valve needs to be replaced. In order to solve the above problems, there are many improved techniques in the industry, one of which is the valve stem of the inner tube-free air faucet disclosed in taiwan patent No. M564673. Please refer to fig. 1, which is an explanatory diagram of the aforementioned patent. The stem body of the valve stem of the tubeless air faucet is divided into a thread section 1, an assembling section 2 and a shunting section 3. The group setting groove 4 outside the group setting section 2 is provided with an airtight body 5, a flange 6 is formed below the shunt section 3, the center of the flange 6 is provided with a through hole 7, and two side holes 8 are formed on the side of the shunt section 3. In addition, a non-return sleeve 9 is sleeved outside the flow dividing section 3 between the air-tight body 5 and the flange 6. When a user is injecting tire repair liquid into a tire, the tire repair liquid is injected from the passageway 10 of the stem of the tubeless air valve stem. The tire repair liquid flows out from the through hole 7. When the tire repair liquid is injected, the user is sealed by the air above the rod body. If the tire repair liquid remains in the through hole 7, although the through hole 7 may have a reduced aperture due to the remaining tire repair liquid in the subsequent tire inflation process of the user, the pressure of the injected gas in the channel 10 will rise to open the non-return sleeve 9, so that the gas can smoothly enter the tire from the side hole 8, and the influence of the remaining tire repair liquid on the air inflow of the valve stem of the tubeless air valve can be reduced.

The core principle of the technology is to provide the other gas outlet position (the side hole 8) after the gas is blocked at the main gas outlet position (the through hole 7). However, the remaining tire repair liquid between the check sleeve 9 and the flow dividing section 3 may stick to the check sleeve 9 and the flow dividing section 3 to seal the side hole 8, thereby sealing all air outlet positions, and thus the valve stem of the tubeless air faucet may not be used. Because the prior art still can not effectively solve the problems of the tire repair liquid, the invention abuses people.

Disclosure of Invention

This paragraph of text extraction and compilation has certain features of the present invention. Other features will be disclosed in subsequent paragraphs. It is intended to cover various modifications and similar arrangements and combinations within the spirit and scope of the appended claims.

In order to solve the foregoing problems, the present invention discloses a tire valve assembly. This tire air cock valves includes: a blow nozzle structure comprising: the air inlet pipe is provided with a first external thread section at the upper end of the outer part of the air inlet pipe, and a second external thread section is formed below the first external thread section; the movable screw is arranged in the air inlet pipe, the upper end of the movable screw forms a third external thread section, and a first sealing ring is fixedly sleeved below the third external thread section; the limiting nut is arranged on the third external thread section and is rotationally adjusted to limit the displaceable length of the movable screw relative to the air inlet pipe; the movable rod sequentially comprises a connecting section, an inward-contracting section, a tire repair liquid containing section and a first setting section from the upper end to the lower end, wherein the connecting section is connected with the lower end of the movable screw rod, a second sealing ring is fixed outside the first setting section, the tire repair liquid containing section forms at least one axial through hole of the non-parallel movable rod, and the outer diameter of the inward-contracting section is smaller than the outer diameters of the connecting section, the tire repair liquid containing section and the second sealing ring; and a breather pipe, its outside includes a fourth external thread section, a second sets up section and a circular fixing base from the upper end to the lower extreme in proper order, its inside includes a first internal thread section and a smooth section from the upper end to the lower extreme in proper order, wherein, this intake pipe accessible this second external thread section connects with this first internal thread section soon and is fixed in this breather pipe upper end, the internal diameter of this smooth section equals or is less than the external diameter of this second sealing ring, thereby this movable rod receives the push-and-pull of this movable screw rod in order to remove in this breather pipe, there is frictional force between this second sealing ring and this smooth section.

According to the invention, the second sealing ring is pushed by the movable screw rod to move out of the smooth section from the lower end of the vent pipe, and at the moment, air from an external air blower nozzle enters from the upper end of the air inlet pipe, passes through a communication space between the movable rod and the vent pipe, and flows out from the lower end of the vent pipe. When the limit nut is screwed to tightly abut against the upper end of the air inlet pipe, and the lower end of the air inlet pipe is tightly abutted against the first sealing ring, the displaceable length is zero, and air from an external blowing nozzle of an air blower cannot enter a circulation space between the movable rod and the vent pipe from the upper end of the air inlet pipe. When tire repair liquid flows in from the lower end of the vent pipe, the tire repair liquid flows into the at least one through hole under the influence of surface tension.

Preferably, a second internal thread section is formed in the connecting section, a fifth external thread section is formed at the lower end of the movable screw, and the movable rod and the movable screw are connected by screwing the second internal thread section and the fifth external thread section.

In one embodiment, the connecting section is integrally formed with the movable screw.

Preferably, the through hole passes through the axis of the movable rod and is perpendicular to the axis of the movable rod. The outer diameter of the inner contraction section is fixed or gradually enlarged from one end to the other end.

The tire air tap valve set can further comprise an elastic sealing pad, the second setting section is movably sleeved with the elastic sealing pad, and the elastic sealing pad limits the tire air tap valve set to slide out of the lower end of the vent pipe for the round fixing seat. The tire valve assembly may further include a nut rotatable on the fourth external thread section to adjust a position thereof on the vent tube, and when the vent tube is mounted on a wheel frame, the nut is rotated to be close to the elastic sealing pad, thereby fastening the wheel frame therebetween. The tire air tap valve group can further comprise an elastic O-shaped ring which is arranged on the fourth external thread section and is arranged between the nut and the elastic sealing pad. The tire valve assembly may further include a dust cap having a third internal threaded section therein in rotatable engagement with the first external threaded section.

The invention has the beneficial effects that:

the tire valve set of the invention can utilize the perforation to contain the tire repair liquid flowing into the vent pipe, and the movable rod is taken out during maintenance to remove the tire repair liquid in the perforation. When the movable rod is inserted into the vent pipe again, the tire repair liquid remaining on the inner wall of the vent pipe is also pushed out of the vent pipe. Therefore, the tire repair liquid can not block the tire air valve bank.

Drawings

FIG. 1 is a schematic illustration of a prior art tubeless air nozzle valve stem;

FIG. 2 is a perspective view of a tire valve assembly in accordance with an embodiment of the present invention;

FIG. 3 is an exploded view of a portion of the tire valve assembly;

FIG. 4 is a schematic exterior view of a blow nozzle configuration;

FIG. 5 is an exploded view of the mouthpiece structure;

FIG. 6 is an external view of a movable rod;

FIG. 7 is a schematic cross-sectional view of a vent tube;

FIG. 8 is a schematic view of the mouthpiece structure connecting the movable rod within the inner wall of the vent tube in flat section;

FIG. 9 is another schematic view of the mouthpiece structure connecting the movable rod within the inner wall of the flat-sectioned air duct;

FIG. 10 shows the tire repair liquid flowing into the puncture hole due to the influence of surface tension when flowing in from the lower end of the air tube;

FIG. 11 illustrates the combination of a tire valve assembly with a wheel rim.

Description of the reference numerals

1 thread segment

2 group setting section

3 flow dividing section

4 sets of grooves

5 gas-tight body

6 Flange

7 through hole

8 side hole

9 non-return sleeve

10 channel

100 blow nozzle structure

110 air inlet pipe

111 first external thread section

112 second external thread section

120 movable screw

121 third external thread section

122 sleeve groove

123 first seal ring

124 fifth external thread section

130 limit nut

200 active rod

210 connecting segment

211 second internal thread segment

220 inner contraction section

230 tire repair liquid containing section

231 perforation

240 first setup section

241 second sealing ring

300 breather pipe

310 fourth external thread segment

320 second setting section

330 round fixing seat

340 first internal thread section

350 smooth segment

400 elastic sealing pad

500 nut

600 elastic O-shaped ring

700 dust cap

710 third internal thread segment

800 wheel frame

900 flow space

910 tire repair liquid.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 2 and 3, fig. 2 is a perspective view of a tire valve assembly according to an embodiment of the present invention. FIG. 3 is an exploded view of the tire valve assembly. The tire valve assembly includes a nozzle structure 100, a movable rod 200, a vent tube 300, an elastic sealing pad 400, a nut 500, an elastic O-ring 600 and a dust cap 700. The structure, function and interactive operation of the various technical elements will be described in detail in the following text.

Referring to fig. 4 and 5, fig. 4 is an external view of the mouthpiece structure 100, and fig. 5 is an exploded view of the mouthpiece structure 100. The mouthpiece structure 100 includes an air inlet tube 110, a movable screw 120, and a limit nut 130. The air inlet pipe 110 is the first element through which air passes when the external inflator nozzle inflates the tire through the tire nozzle valve set. The air inlet pipe 110 has a first external thread section 111 formed at an outer upper end thereof, and a second external thread section 112 formed below the first external thread section 111. The first external thread section 111 can be screwed with the internal thread of the blowing nozzle of the inflator and also can be screwed with the dustproof cap 700. When the first external thread section 111 is screwed and tightly connected with the internal thread of the nozzle of the inflator, it is ensured that air from the nozzle of the inflator is not dissipated from the outside of the air inlet pipe 110. The movable screw 120 is a rod-shaped object, and is disposed in the air inlet pipe 110, so that it can move in the axial direction in the air inlet pipe 110 without being limited thereto. The upper end of the movable screw 120 forms a third external thread section 121, and a sleeve groove 122 is disposed below the third external thread section 121 for fixedly sleeving a first sealing ring 123. The first sealing ring 123 is an elastic body, and can fill up the surrounding gaps by resilience force after being pressed, so that the function of preventing leakage of sealing air can be achieved. In fact, the first sealing ring 123 may be made of nitrile rubber, rubber (such as ethylene propylene diene monomer, fluorocarbon rubber, fluororubber, urethane rubber, natural rubber, etc.), silica gel, etc. The lower end of the movable screw 120 forms a fifth external thread section 124. The limit nut 130 is mounted on the third external thread section 121 and is rotatably adjusted to limit the displaceable length of the movable screw 120 relative to the air inlet pipe 110.

When the stop nut 130 moves to the uppermost end of the third external thread section 121 (not removed from the third external thread section 121), the movable screw 120 can move upward relative to the air inlet pipe 110 until the first sealing ring 123 blocks the lower end of the air inlet pipe 110, and move downward until the lower end of the stop nut 130 abuts against the upper end of the air inlet pipe 110, and the distance between the final ends of the upward and downward movements is the displaceable length. In contrast, when the limit nut 130 is screwed to abut against the upper end of the air inlet pipe 110 and the lower end of the air inlet pipe 110 abuts against the first sealing ring 123, the displaceable length becomes zero. That is, the limit nut 130, the air inlet pipe 110 and the movable screw 120 are locked, and the air inlet pipe 110 and the movable screw 120 cannot move relatively. In terms of materials, the air inlet tube 110, the movable screw 120 and the limit nut 130 may be made of stainless steel, iron, aluminum, or other metal alloys.

Referring to fig. 6, fig. 6 is an appearance schematic view of the movable rod 200, and the movable rod 200 sequentially includes a connecting section 210, an inner contracting section 220, a tire repair liquid accommodating section 230, and a first setting section 240 from the upper end to the lower end. The connection section 210 is connected to the lower end of the movable screw 120. In fact, a second internal thread section 211 is formed in the connecting section 210 (as shown by the dotted line in the upper part of fig. 6), and since the fifth external thread section 124 is formed at the lower end of the movable screw 120, the movable rod 200 and the movable screw 120 can be connected by screwing the second internal thread section 211 and the fifth external thread section 124. The inner contracting section 220 is bounded between the connecting section 210 and the tire repair liquid accommodating section 230, and the outer diameter of the inner contracting section 220 is smaller than the outer diameters of the connecting section 210 and the tire repair liquid accommodating section 230. When the movable rod 200 is placed in the air tube 300, a large air flow space is formed between the inner contracting section 220 and the inner wall of the air tube 300, which facilitates the air flow during inflation and also facilitates the air leakage from the tire. In this embodiment, the outer diameter of the inner tapered section 220 is fixed; in other embodiments, the tapered section 220 may gradually expand from one end to the other. The first installation section is externally fixed with a second sealing ring 241, and the second sealing ring 241 and the first sealing ring 123 have the same function and material, but are used for sealing the inner space of the inner wall at the lower end of the breather pipe 300. The second sealing ring 241 also has a secondary sealing function (the primary sealing function is achieved by the mouthpiece structure 100). The second sealing ring 241 may function to prevent rapid air leakage when the mouthpiece structure 100 is not functionally functional. The tire repair liquid housing section 230 forms at least one through hole 231 (between the lower two dotted lines) that is not parallel to the axial direction of the movable rod 200. In the present embodiment, the number of the through holes 231 is two, and the through holes 231 pass through the axis of the movable rod 200 and are perpendicular to the axis of the movable rod 200. The function of the perforations 231 will be explained in the following text. As can be seen from fig. 6, the outer diameter of the inner contracting section 220 is smaller than the outer diameters of the connecting section 210, the tire repair liquid housing section 230, and the second seal ring 241. In terms of materials, the movable bar 200 may be made of stainless steel, iron, aluminum, or other metal alloys.

Referring to fig. 7, a cross-sectional view of a snorkel 300 is shown. The exterior of the vent pipe 300 sequentially includes a fourth external thread section 310, a second setting section 320 and a circular fixing seat 330 from the upper end to the lower end. The interior of the vent tube 300 includes, from top to bottom, a first internal thread segment 340 (shown in phantom in fig. 7) and a smooth segment 350. The fourth external thread segment 310 may conform to the thread specifications of an FR10 screw. The air inlet pipe 110 may be secured to the upper end of the vent pipe 300 by threadably engaging the second externally threaded section 112 with the first internally threaded section 340. The inner diameter of the smooth section 350 is equal to or smaller than the outer diameter of the second sealing ring 241, so that when the movable rod 200 is pushed and pulled by the movable screw 120 to move in the vent pipe 300, a friction force exists between the second sealing ring 241 and the smooth section 350. The frictional force can support the second sealing ring 241 to block the smooth section 350, and can resist the gas in the tire from overflowing towards the vent pipe 300 due to the pressure of the gas, and if the inner wall of the vent pipe 300 is stained with the tire repair liquid, the second sealing ring 241 can remove the tire repair liquid from the inner wall of the vent pipe 300 by the frictional force. In terms of materials, the breather tube 300 may be made of stainless steel, iron, aluminum, or other metal alloys.

The elastic sealing pad 400 is movably sleeved outside the second setting section 320 and limits the circular fixing seat 330 from sliding out to the lower end of the vent pipe 300. The elastic sealing pad 400 can be made of nitrile rubber, silica gel, or the like. Nut 500 may be rotated on fourth external thread segment 310 to adjust its position on vent tube 300. When the vent tube 300 is mounted on a rim 800 (as shown in fig. 11), the nut 500 is rotated to be close to the resilient sealing pad 400, thereby fastening the rim 800 therebetween. An elastomeric O-ring 600 is mounted on the fourth external thread segment 310 between the nut 500 and the elastomeric sealing pad 400. The elastic O-ring 600 functions as a cushion between the nut 500 and the rim 800, thereby preventing the nut 500 from being tightened to damage the rim 800. In terms of materials, the elastic O-ring 600 may also be made of nitrile rubber, silica gel, or the like. The dust cap 700 has a third female thread section 710 inside, which is rotatably engaged with the first male thread section 111 to prevent dust from entering from the upper end of the air inlet pipe 110. The dust cap 700 may also be made of stainless steel, iron, aluminum, or other metal alloys.

The operation of the tire valve assembly according to the present invention will be described below. Referring to fig. 8 and 9, fig. 8 is a schematic view of the mouthpiece structure 100 connecting the movable rod 200 in the inner wall of the flat-cut vent pipe 300, and fig. 9 is another schematic view of the mouthpiece structure 100 connecting the movable rod 200 in the inner wall of the flat-cut vent pipe 300. The purpose of the vent tube 300 being cut flat along its axis is to make it easier to see the movement of the mouthpiece structure 100 and the movable lever 200 inside the vent tube 300. When the limit nut 130 is moved to the uppermost end of the third external thread section 121, the movable screw 120 has the maximum displaceable length. As shown in fig. 8, at this time, the lower end of the air inlet pipe 110 is clamped by the first sealing ring 123, and the air pumping operation cannot be performed, and the lower end of the movable rod 200 is aligned with the bottom of the circular fixing base 330 or slightly retracted into the circular fixing base 330. Then, the upper end of the movable screw 120 is pressed downward, as shown in fig. 9, and the movable screw 120 drives the movable rod 200 to move downward. The second sealing ring 241 is moved out of the smooth section 350 from the lower end of the vent pipe 300 by the movable screw 120. At this time, air from the mouthpiece of the external inflator enters from the upper end of the air intake pipe 110, passes through the communication space 900 between the movable rod 200 and the air pipe 300, and flows out from the lower end of the air pipe 300. When the stop nut 130 is screwed to abut against the upper end of the air inlet pipe 110 and the lower end of the air inlet pipe 110 abuts against the first sealing ring 123, air from an external blowing nozzle of an air blower cannot enter the circulation space 900 between the movable rod 200 and the vent pipe 300 through the upper end of the air inlet pipe 110.

As is apparent from the above description, when the inflation operation is completed, the tire repair liquid in the tire can flow back into the breather pipe 300 due to the pressure difference. Referring to fig. 10, when tire repair liquid 910 flows in from the lower end of air pipe 300, the tire repair liquid flows into through-hole 231 due to the influence of surface tension. That is, perforations 231 function to collect a majority of the tire repair liquid that enters snorkel 300. The movable rod 200 can be taken out at the time of maintenance to remove the tire repair liquid in the through hole 231. When movable rod 200 is inserted into vent pipe 300 again, second seal ring 241 pushes out tire repair liquid remaining on the inner wall of vent pipe 300 to the outside of vent pipe 300.

In other embodiments, another tire valve assembly can be manufactured by integrally forming the connecting section 210 and the movable screw 120, and the function is not changed.

Although embodiments of the present invention have been shown and described above, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A tire valve assembly, comprising: a blowing nozzle structure, a movable rod and a vent pipe;

the blowing nozzle structure comprises an air inlet pipe, a movable screw rod and a limit nut;

the air inlet pipe is provided with a first external thread section at the upper end of the outer part of the air inlet pipe, and a second external thread section is formed below the first external thread section;

the movable screw is arranged in the air inlet pipe, the upper end of the movable screw forms a third external thread section, and a first sealing ring is fixedly sleeved below the third external thread section; and

a limit nut, which is arranged on the third external thread section and is rotationally adjusted to limit the displaceable length of the movable screw rod relative to the air inlet pipe;

the movable rod sequentially comprises a connecting section, an inward-contracting section, a tire repair liquid containing section and a first setting section from the upper end to the lower end, wherein the connecting section is connected with the lower end of the movable screw rod, a second sealing ring is fixed outside the first setting section, the tire repair liquid containing section forms at least one axial through hole of the non-parallel movable rod, and the outer diameter of the inward-contracting section is smaller than the outer diameters of the connecting section, the tire repair liquid containing section and the second sealing ring; and

the air inlet pipe is fixed at the upper end of the air pipe by the rotary connection of the second external thread section and the first internal thread section, and the inner diameter of the smooth section is equal to or smaller than the outer diameter of the second sealing ring, so that when the movable rod is pushed and pulled by the movable screw rod to move in the air pipe, friction force exists between the second sealing ring and the smooth section.

2. The valve assembly according to claim 1, wherein the second sealing ring is pushed by the movable screw to move out of the smooth section from the lower end of the vent tube, and air from an external blowing nozzle enters from the upper end of the air inlet tube, passes through the communication space between the movable rod and the vent tube, and flows out from the lower end of the vent tube.

3. The valve assembly according to claim 1, wherein when the stop nut is screwed to abut against the upper end of the air inlet tube and the lower end of the air inlet tube abuts against the first sealing ring, the displaceable length is zero, and air from an external blowing nozzle of a blowing machine cannot enter the communication space between the movable rod and the vent tube through the upper end of the air inlet tube.

4. The valve assembly according to claim 1, wherein when tire repair liquid flows in from the lower end of the vent tube, the tire repair liquid flows into the at least one through hole under the influence of surface tension.

5. The valve assembly according to claim 1, wherein a second internal thread section is formed in the connecting section, a fifth external thread section is formed at a lower end of the movable screw, and the movable rod and the movable screw are connected by screwing the second internal thread section and the fifth external thread section.

6. The valve assembly according to claim 1, wherein the connecting section is integrally formed with the threaded movable stem.

7. The valve assembly according to claim 1, wherein the through hole passes through the axis of the movable rod and is perpendicular to the axis of the movable rod.

8. The valve assembly of claim 1, wherein the inner tapered section has a constant outer diameter or gradually expands from one end to the other end.

9. The valve assembly of claim 1, further comprising a resilient gasket movably disposed outside the second section and limiting the circular fixing seat from sliding out of the lower end of the vent tube.

10. The valve assembly of claim 9, further comprising a nut rotatable on the fourth external thread segment to adjust its position on the vent tube, wherein when the vent tube is mounted on a wheel frame, the nut is rotated to close the resilient sealing pad to secure the wheel frame therebetween.

11. The valve assembly of claim 10, further comprising an elastic O-ring disposed on the fourth external thread segment between the nut and the elastic sealing pad.

12. The tire valve nozzle block of claim 1, wherein said tire valve nozzle block further comprises a dust cap having a third internally threaded section therein in rotatable engagement with said first externally threaded section.