TWI711549B - Tire valve assembly - Google Patents

Abstract

A tire valve assembly is disclosed. The tire valve assembly includes a mouthpiece structure, a movable rod, an air pipe, an elastic tight pad, a nut, an elastic O-ring and a dust cap. The tire valve assembly can use a punched hole on the end of the movable rod to receive the tire repair fluid flowing into the air pipe. Take out the movable rod during maintenance to remove the tire repair fluid in the punched hole. When the movable rod is reinstalled in the air pipe, the tire repair fluid remaining on the inner wall of the air pipe will also be squeezed out of the air pipe. With this, the tire repair fluid will no longer block the tire valve assembly.

Description

Tire valve group

The present invention relates to a tire valve assembly, in particular to a tire valve assembly used on a tubeless bicycle wheel frame, which allows tire repair fluid to enter the tire for repair without being blocked by the tire repair fluid.

Bicycles are one of the main means of transportation for people. Because bicycles do not consume energy, in addition to being environmentally friendly, it also allows people who use bicycles to achieve another purpose of exercising. Although the bicycle is convenient, inadvertent use may cause damage to the bicycle and become a burden for people when traveling, such as a flat tire caused by sharp objects. Therefore, in addition to sending broken tyre bicycles to dealerships to repair or replace new tyres, in recent years, it has become popular to use tyre repair fluid to repair small holes to reduce the trouble caused by unpredictable punctures. Tire repair fluid is a liquid mixture composed of a variety of polymer compounds, different fine rubbers or fibers, and is poured into the tire through the air valve of the wheel frame. The tire repair liquid covers the inner surface of the tire. When a hole occurs in the tire, the tire repair liquid will penetrate into the hole, contact the air and solidify quickly to fill the hole.

Because the tire repair fluid has a certain viscosity and the possibility of curing, when the air valve valve is repeatedly used to inflate the tire, it will often cause the end of the air valve valve to shrink under the influence of the tire repair fluid, reduce the air intake, and even cause The valve must be replaced if it is blocked. In order to solve the aforementioned problems, the industry has many improved technologies, one of which is the tubeless valve stem disclosed in Taiwan New Patent No. M564673. Please see Figure 1, which is an illustration of the aforementioned patent. The shaft of the tubeless valve stem is divided into a threaded section 1, an assembly section 2 and a shunt section 3. The assembly groove 4 outside the assembly section 2 is provided with an airtight body 5, and a flange 6 is formed under the distribution section 3. A through hole 7 is opened in the center of the flange 6, and two side holes 8 are formed on the side of the branch section 3. In addition, a backstop sleeve 9 is sleeved on the outside of the dividing section 3 between the airtight body 5 and the flange 6. When the user injects the tire repair liquid into the tire, the tire repair liquid is injected from the channel 10 of the shaft of the tubeless valve stem. The tire repair liquid will flow out from the through hole 7. After the tire repair liquid is injected, the user is hermetically sealed by the upper part of the shaft. If the tire repair fluid remains in the through hole 7, in the subsequent process of the user inflating the tire, although the through hole 7 may be reduced due to the remaining tire repair fluid, the pressure of the injected gas inside the channel 10 will be reduced. Ascend to open the check sleeve 9 so that the gas can smoothly enter the tire from the side hole 8, thereby reducing the influence of the remaining tire repair liquid on the air intake of the tubeless valve stem.

The core principle of the aforementioned technology is to provide another gas outlet position (side hole 8) after the main gas outlet position (through hole 7) is blocked. However, the remaining tire repair fluid between the backstop sleeve 9 and the diversion section 3 may also stick to the backstop sleeve 9 and the diversion section 3, and then seal the side holes 8, thereby sealing all air outlet positions, resulting in the failure The inner tube valve stem cannot be used. Since the prior art still cannot effectively solve the problems of the tire repair liquid, it is the origin of the present invention.

This paragraph extracts and compiles certain features of the present invention. Other features will be revealed in subsequent paragraphs Fall in. Its purpose is to cover the spirit and scope of the additional patent application, various modifications and similar Permutation and combination.

In order to solve the aforementioned problems, the present invention discloses a tire valve assembly. The tire air nozzle valve assembly includes: a mouthpiece structure, including: an air intake pipe, a first external thread section is formed at the outer upper end of the air intake pipe, and a second external thread section is formed below the first external thread section; and a movable The screw is arranged in the intake pipe, the upper end forms a third external thread section, and a first sealing ring is fixedly sleeved under the third external thread section; and a limit nut is installed on the third external thread Section, rotating adjustment to limit the position of the movable screw relative to the intake pipe Moving length; a movable rod, from the upper end to the lower end, including a connecting section, a retracted section, a tire repair fluid containing section and a first setting section, wherein the connecting section is connected to the lower end of the movable screw, the first A second sealing ring is fixed on the outside of a setting section, the tire repair fluid containing section forms at least one non-parallel movable rod axial perforation, and the outer diameter of the retracted section is larger than the connecting section, the tire repair fluid containing section and the The outer diameter of the second seal ring is small; and a vent pipe, the outer part of which includes a fourth external thread section, a second setting section and a circular fixing seat from upper end to lower end, and the inner part includes from upper end to lower end in turn A first internal thread section and a smooth section, wherein the intake pipe can be fixed to the upper end of the vent pipe by screwing the second external thread section and the first internal thread section. The inner diameter of the smooth section is substantially It 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 to move in the vent pipe, there is friction between the second sealing ring and the smooth section.

According to the present invention, the second sealing ring can be moved by the movable screw to move out of the smooth section from the lower end of the vent pipe. At this time, the air from the blowing nozzle of an external air compressor enters from the upper end of the air inlet pipe and passes through the movable rod The circulation space with the vent pipe flows out from the lower end of the vent pipe. When the limit nut is screwed to the upper end of the intake pipe, and the lower end of the intake pipe is immediately connected to the first sealing ring, the displaceable length is zero, and the air from the nozzle of an external air compressor cannot pass through the The upper end of the intake pipe enters the circulation space between the movable rod and the vent pipe. When a tire repair fluid flows in from the lower end of the vent pipe, it flows into the at least one perforation 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 rotated by the second internal thread section and the fifth external thread section. Connect and connect.

In an embodiment, the connecting section and the movable screw are integrally formed.

Preferably, the perforation passes through the axis of the movable rod and is perpendicular to the axis of the movable rod. The outer diameter of the retracted section is fixed or gradually expands from one end to the other.

The tire air nozzle valve assembly may further include an elastic sealing pad, which can be movably sleeved outside the second setting section, and restricts the circular fixing seat from sliding out to the lower end of the vent pipe. The tire valve set can also further include a nut, which can be rotated on the fourth external thread section to adjust its position on the vent tube. When the vent tube is installed on a wheel frame, the nut Rotate to approach the elastic contact pad, and then fasten the wheel frame therebetween. The tire air nozzle valve assembly may further include an elastic O-ring, which is installed on the fourth external threaded section and between the nut and the elastic sealing pad. The tire air nozzle valve assembly may further include a dust cap with a third internal thread section inside which can be rotatably engaged with the first external thread section to prevent dust from entering the upper end of the air intake pipe of the present invention The tire valve group can use 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 put into the vent tube again, the tire repair fluid remaining on the inner wall of the vent tube will also be squeezed out of the vent tube. Thereby, the tire repair fluid will no longer block the tire valve group.

1: thread section

2: Set up section

3: Diversion section

4: Set up slots

5: Airtight body

6: flange

7: Through hole

8: side hole

9: Backstop set

10: Channel

100: mouthpiece structure

110: intake pipe

111: The first external thread section

112: second external thread segment

120: movable screw

121: third external thread segment

122: Set Slot

123: The first sealing ring

124: Fifth external thread segment

130: limit nut

200: active pole

210: connection segment

211: second internal thread segment

220: Retracted section

230: Tire repair fluid storage section

231: Piercing

240: The first setting section

241: second sealing ring

300: Snorkel

310: Fourth external thread segment

320: second setting section

330: round mount

340: The first internal thread segment

350: smooth segment

400: Elastic contact pad

500: Nut

600: Elastic O-ring

700: Dust cap

710: third internal thread segment

800: wheel frame

900: circulation space

910: Tire Repair Fluid

FIG. 1 is an explanatory diagram of a tubeless valve stem of the prior art, FIG. 2 is a three-dimensional schematic diagram of a tire valve assembly according to an embodiment of the present invention, and FIG. 3 is a large part of the tire valve assembly Fig. 4 is a schematic view of the appearance of a mouthpiece structure, Fig. 5 is an exploded view of the mouthpiece structure, Fig. 6 is a schematic view of the appearance of a movable rod, Fig. 7 is a schematic cross-sectional view of a vent pipe, and Fig. 8 is a schematic view of the blow A schematic diagram of the nozzle structure connecting the movable rod in the inner wall of the vent pipe in a horizontal section. FIG. 9 is another schematic diagram of the mouthpiece structure connecting the movable rod in the inner wall of the vent pipe in a horizontal section. FIG. 10 shows the tire repair liquid. When it flows in from the lower end of the trachea, it flows into the perforation under the influence of surface tension. Fig. 11 shows how the tire valve assembly and the wheel frame are combined.

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not They are all examples. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of the present invention.

Please refer to FIG. 2 and FIG. 3. FIG. 2 is a perspective view of a tire valve assembly according to an embodiment of the present invention. Figure 3 is an exploded schematic diagram of most of the components of the tire valve assembly. The tire valve assembly includes a mouthpiece structure 100, a movable rod 200, a vent pipe 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 each technical component will be explained in detail in the text below.

Please refer to FIG. 4 and FIG. 5. FIG. 4 is a schematic view of the appearance of the mouthpiece structure 100, and FIG. 5 is an exploded schematic view of the mouthpiece structure 100. The blowing nozzle structure 100 includes an air inlet pipe 110, a movable screw 120 and a limit nut 130. The air intake pipe 110 is the first element through which air passes when the nozzle of an external air compressor pumps air to the tire through the tire valve assembly. A first external thread section 111 is formed at the outer upper end of the intake pipe 110, and a second external thread section 112 is formed below the first external thread section 111. In addition to being screwed to the internal screw thread of the blower nozzle, the first external threaded section 111 can also be screwed to the dust cap 700. When the first external thread section 111 and the internal thread of the blower nozzle are screwed and tightly connected, it can be ensured that the air from the blower nozzle will not escape from the outside of the air intake pipe 110. The movable screw 120 is a rod-like object, which is arranged in the intake pipe 110, so that it can move in the axial direction in the intake pipe 110 without limitation. A third external thread section 121 is formed at the upper end of the movable screw 120, and a set of groove 122 is provided under the third external thread section 121 for fixing a first sealing ring 123. The first sealing ring 123 is an elastic body, which can fill the surrounding gaps by its resilience after being compressed, so as to achieve the function of sealing air without leakage. In practice, the first sealing ring 123 can be made of nitrile rubber, rubber (such as EPDM, fluorocarbon rubber, fluororubber, polyurethane rubber, natural rubber, etc.), silicon rubber, and the like. A fifth external thread section 124 is formed at the lower end of the movable screw 120. The limit nut 130 is installed on the third external thread section 121 and is rotated and adjusted to limit the movable length of the movable screw 120 relative to the intake pipe 110.

When the limit 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 to the first sealing ring 123 relative to the intake pipe 110 The lower end of the intake pipe 110 is stuck, and it moves downward until the lower end of the limit nut 130 abuts the upper end of the intake pipe 110, and the distance between the most end points of the vertical movement is the displacement length. In contrast, when the limit nut 130 is screwed to abut against the upper end of the intake pipe 110 and the lower end of the intake pipe 110 is close to 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 stuck, and the air inlet pipe 110 and the movable screw 120 cannot move relative to each other. In terms of materials, the intake pipe 110, the movable screw 120 and the limit nut 130 can be made of stainless steel, iron, aluminum, or other metal alloys.

Please refer to Figure 6, which is a schematic diagram of the appearance of the movable rod 200. The movable rod 200 includes a connecting section 210, an inwardly retracted section 220, a tire repair fluid containing section 230, and a first setting section 240 from top to bottom. . The connecting section 210 is connected to the lower end of the movable screw 120. In practice, a second internal thread section 211 is formed in the connecting section 210 (as shown by the dashed line at the top of FIG. 6). Since the lower end of the movable screw 120 forms a fifth external thread section 124, the movable rod 200 and the movable screw 120 can be borrowed The second internal thread section 211 and the fifth external thread section 124 are screwed and connected. The constricted section 220 is bounded between the connecting section 210 and the tire repair fluid containing section 230, and the outer diameter of the constricted section 220 is smaller than the outside diameter of the connecting section 210 and the tire repair fluid containing section 230. When the movable rod 200 is placed in the vent pipe 300, a larger circulation space is formed between the inwardly contracted section 220 and the inner wall of the vent pipe 300. This circulation space facilitates the flow of air during pumping and also facilitates air leakage from the tire. Out. In this embodiment, the outer diameter of the retracted section 220 is fixed; in other embodiments, the retracted section 220 may gradually expand from one end to the other end. A second sealing ring 241 is fixed to the outside of the first setting section. The second sealing ring 241 has the same function and material as the first sealing ring 123, but is used to seal the inner wall of the lower end of the vent pipe 300. The second sealing ring 241 also has a secondary sealing function (the main sealing function is achieved by the blowing nozzle structure 100). When the function of the mouthpiece structure 100 is defective, the second sealing ring 241 can function to prevent rapid air leakage. The tire repair fluid containing section 230 forms at least one The perforation 231 in the axial direction of the non-parallel movable rod 200 (between the two broken lines below). In this 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 perforation 231 will be explained in the text below. It can be seen from FIG. 6 that the outer diameter of the retracted section 220 is smaller than the outer diameters of the connecting section 210, the tire repair fluid containing section 230 and the second sealing ring 241. In terms of materials, the movable rod 200 can be made of stainless steel, iron, aluminum, or other metal alloys.

Please refer to FIG. 7, which is a schematic cross-sectional view of the vent pipe 300. The outside 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 upper end to lower end. The inside of the vent pipe 300 includes a first internal threaded section 340 (shown by the dashed line at the top of FIG. 7) and a smooth section 350 in turn from the upper end to the lower end. The fourth external thread section 310 may meet the thread specification of the FR10 screw. The intake pipe 110 can be fixed to the upper end of the vent pipe 300 by screwing the second external thread section 112 and the first internal thread section 340. The inner diameter of the smooth section 350 is substantially equal to or smaller than the outer diameter of the second seal 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, friction exists between the second seal ring 241 and the smooth section 350 force. This frictional force can support the second sealing ring 241 to clamp the smooth section 350, and resist the pressure of the gas in the tire to overflow toward the vent pipe 300. If the inner wall of the vent pipe 300 is stained with tire repair fluid, the second seal The ring 241 can remove the tire repair fluid from the inner wall of the vent pipe 300 by friction. In terms of materials, the vent pipe 300 can be made of stainless steel, iron, aluminum, or other metal alloys.

The elastic sealing pad 400 can be movably sleeved on the outside of the second setting section 320, and is the circular fixing seat 330 to restrict the sliding out toward the lower end of the vent pipe 300. The material of the elastic contact pad 400 can be nitrile rubber, rubber, silicon rubber, etc. The nut 500 can be rotated on the fourth external thread section 310 to adjust its position on the vent pipe 300. When the vent pipe 300 is installed on a wheel frame 800 (as shown in FIG. 11), the nut 500 is rotated to approach the elastic contact pad 400, and the wheel frame 800 is fastened therebetween. The elastic O-ring 600 is installed on the fourth external thread section 310 and is between the nut 500 and the elastic sealing pad 400. The function of the elastic O-ring 600 is as a nut 500 and a wheel frame The buffer between 800 and 800 prevents the nut 500 from damaging the wheel frame 800 due to tightening. In terms of materials, the elastic O-ring 600 can also use nitrile rubber, rubber, silicone, etc. as materials. The dust cap 700 has a third internal threaded section 710 inside, which can be rotatably engaged with the first external threaded section 111 to prevent dust from entering from the upper end of the air inlet pipe 110. The dust cap 700 can also be made of stainless steel, iron, aluminum, or other metal alloys.

The operation mode of the tire valve assembly of the present invention is described below. Please refer to Figures 8 and 9. Figure 8 is a schematic diagram of the mouthpiece structure 100 connecting the movable rod 200 in the inner wall of the vent pipe 300 in horizontal section, and FIG. 9 is the mouthpiece structure 100 connecting the movable rod 200 to the vent pipe 300 in horizontal section. Another schematic diagram inside the inner wall. The purpose of cutting the air pipe 300 along its axis is to make it easier to see the movement of the mouthpiece structure 100 and the movable rod 200 inside the air pipe 300. When the limit nut 130 moves to the uppermost end of the third external threaded section 121, the movable screw 120 has the largest movable length. As shown in FIG. 8, at this time, the first sealing ring 123 clamps the lower end of the intake pipe 110 and cannot perform air pumping operation. The lower end of the movable rod 200 is aligned with the bottom of the circular fixing seat 330 or slightly retracted in the circular fixing seat 330. Then, the upper end of the movable screw 120 is pressed down, as shown in FIG. 9, the movable screw 120 drives the movable rod 200 to move downward. The second sealing ring 241 is pushed by the movable screw 120 and moved out of the smooth section 340 from the lower end of the vent pipe 300. At this time, the air from the nozzle of the external air compressor enters from the upper end of the air inlet pipe 110, passes through the circulation 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 limit nut 130 is screwed to the upper end of the intake pipe 110, and the lower end of the intake pipe 110 is immediately connected to the first sealing ring 123, the air from the nozzle of an external air compressor cannot enter the movement from the upper end of the intake pipe 110 The circulation space 900 between the rod 200 and the vent pipe 300.

From the above description, it can be seen that when the air pumping operation is completed, the tire repair liquid shell in the tire can flow back into the vent pipe 300 due to the pressure difference. As shown in Fig. 10, when the tire repair fluid 910 flows in from the lower end of the vent pipe 300, the tire repair fluid will flow into the perforation 231 under the influence of surface tension. In other words, the function of the perforation 231 is to collect most of the tire repair liquid that enters the vent pipe 300. You can move the rod during maintenance Take out 200 and remove the tire repair fluid in the perforation 231. When the movable rod 200 is inserted into the vent pipe 300 again, the second sealing ring 241 will squeeze the tire repair liquid remaining on the inner wall of the vent pipe 300 out of the 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 its function remains unchanged.

Although the embodiments of the present invention have been shown and described above, for those skilled in the art, it will be understood that various changes, modifications, substitutions, and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. Variations, the scope of the present invention is defined by the scope of the attached patent application and its equivalents.

300: Snorkel

400: Elastic contact pad

500: Nut

700: Dust cap

Claims (12)

A tire air nozzle valve assembly, comprising: a mouthpiece structure, including: an air intake pipe formed at its outer upper end with a first external thread section, and a second external thread section formed below the first external thread section; The movable screw is arranged in the intake pipe, and a third external thread section is formed at the upper end, a first sealing ring is fixedly sleeved under the third external thread section; and a limit nut is installed on the third outer thread section. The threaded section is rotated and adjusted to limit the movable length of the movable screw relative to the intake pipe; a movable rod, from the upper end to the lower end, includes a connecting section, a retracted section, a tire repair fluid containing section and a first A setting section, wherein the connecting section is connected to the lower end of the movable screw, a second sealing ring is fixed outside the first setting section, the tire repair fluid containing section forms at least one non-parallel movable rod axial perforation, and the inner The outer diameter of the constricted section is smaller than the outer diameters of the connecting section, the tire repair fluid accommodating section and the second sealing ring; and a vent pipe, the outer portion of which includes a fourth external thread section and a first Two setting sections and a circular fixing seat, the inside of which includes a first internal thread section and a smooth section in turn from the upper end to the lower end, wherein the air intake pipe can pass through the second external thread section and the first internal thread The section is screwed and fixed to the upper end of the vent pipe. The inner diameter of the smooth section is substantially 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 to move in the vent pipe, the There is friction between the second sealing ring and the smooth section. For the tire air nozzle valve set described in item 1 of the scope of patent application, the second sealing ring can be moved by the movable screw to move out of the smooth section from the lower end of the vent pipe, at this time, it comes from an external air blower nozzle The air enters from the upper end of the intake pipe, passes through the circulation space between the movable rod and the vent pipe, and flows out from the lower end of the vent pipe. For the tire air nozzle valve set described in item 1 of the scope of patent application, when the limit nut is screwed to the upper end of the intake pipe and the lower end of the intake pipe is immediately connected to the first sealing ring, the The displacement length is zero, and the air from the nozzle of an external air pump cannot enter the circulation space between the movable rod and the vent pipe from the upper end of the air intake pipe. As described in the first item of the scope of patent application, when a tire repair fluid flows in from the lower end of the vent pipe, it flows into the at least one perforation under the influence of surface tension. For the tire valve set described in item 1 of the scope of patent application, 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 The second internal thread section and the fifth external thread section are screwed and connected. In the tire valve assembly described in item 1 of the scope of patent application, the connecting section and the movable screw are integrally formed. According to the tire valve assembly described in item 1 of the scope of patent application, the perforation passes through the axis of the movable rod and is perpendicular to the axis of the movable rod. For the tire valve assembly described in item 1 of the scope of patent application, the outer diameter of the inwardly contracted section is fixed or gradually expands from one end to the other end. For example, the tire valve valve set described in item 1 of the scope of patent application further includes an elastic sealing pad, which can be movably sleeved on the outside of the second setting section and restricts the circular fixing seat from sliding out to the lower end of the vent . For example, the tire valve assembly described in item 9 of the scope of patent application further includes a nut, which can be rotated on the fourth external thread section to adjust its position on the vent pipe. When the vent pipe is installed in a wheel When the frame is mounted, the nut rotates to approach the elastic sealing pad, thereby tightening the wheel frame therebetween. The tire valve assembly described in item 9 of the scope of the patent application further includes an elastic O-ring installed on the fourth external thread segment and between the nut and the elastic sealing pad. The tire valve assembly described in item 1 of the scope of patent application further includes a dust cap with a third internal threaded section inside which can be rotatably engaged with the first external threaded section to prevent dust from entering the air The upper end of the tube enters.

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