TWI849980B - Tire valve and valve pin thereof - Google Patents

Abstract

A tire valve and a valve pin thereof are provided. The valve pin includes a body portion, a head portion and a valve seal. The body portion includes a tubular wall, the tubular wall includes a first end and a second end, the tubular wall defines an axial hole and including at least one radial hole in communication with the axial hole, and the axial hole has an opening at the first end of the tubular wall. The head portion is fixedly and integrally connected axially to the second end of the tubular wall, and includes a groove on an outer surface thereof. The valve seal is received within the groove and protrudes radially outward beyond the groove, and is configured for sealingly contacting an inner surface of the tire valve.

Description

Tire valves and valves

The present invention relates to a tire inflation and deflation component, and in particular to a tire air nozzle and valve thereof.

The tire valve is installed on the wheel frame and protrudes from the wheel frame for inflation or deflation. For example, the current bicycle tires have two types, "tube-type" and "tubeless", and both require a valve to achieve the purpose of inflation or deflation. It is known that the tire valve is mainly equipped with a valve rod in a valve seat to control the conduction or sealing of the gas, thereby making the tire have a certain tire pressure.

The inflation and deflation flow of common familiar air nozzles is small, and the inflation and deflation time is longer. In addition, the valve stem or valve assembly of the familiar air nozzle is more complex and larger in size, which is more difficult and time-consuming to process, manufacture, and assemble. In addition, all familiar air nozzles can only be used as a single tire inflation or deflation channel, and cannot be used as an adapter and cannot be transferred to different familiar air nozzles for use (for example, when the valve stem is not fully sealed or does not have a valve stem).

In addition, it is known that the space in the valve core does not provide a large enough passage for the injection of sealant to prevent air leakage when the integrity of the tire is compromised. Therefore, the sealant needs to be injected into the tire before the valve core is assembled to the rim, or the valve core needs to be removed to allow the sealant to enter the tire through the valve stem. However, in both cases, with the passage of time and use, the sealant will enter the valve core and block the valve core so that it cannot operate normally, resulting in the need for frequent replacement of the valve core.

In addition, it is known that the valve pin of the valve core extends beyond the valve core and is therefore susceptible to damage, especially when a hand-held pump is used to inflate the tire, which creates a lateral load on the valve core assembly. In this case, the valve pin can easily break or become damaged, resulting in failure.

Therefore, it is necessary to provide a novel and advanced tire air valve and valve to solve the above problems.

The main purpose of the present invention is to provide a tire air valve and its valve, which are simple to manufacture, low in cost, quick to assemble and disassemble, small in size, stable in structure and strong in strength.

To achieve the above-mentioned purpose, the present invention provides a valve for a tire air valve, comprising: a valve body, comprising a peripheral wall, the peripheral wall comprising a first end and a second end, the peripheral wall surrounding an axial hole and provided with at least one side hole connected to the axial hole, the axial hole having an opening at the first end; a head, axially fixedly connected to the second end of the peripheral wall to form a whole, and having a groove on the peripheral surface; and a sealing member, embedded in the groove and radially protruding from the groove, for sealingly abutting against an inner surface of the tire air valve.

To achieve the above-mentioned purpose, the present invention further provides a tire air valve, including a valve, and further including: a pipe, including a channel and a flange extending radially inward, the valve is accommodated in the channel, the opening of the shaft hole and the seal are respectively located on two opposite sides of the flange, the peripheral wall and the seal have an outer diameter greater than the inner diameter of the flange, and the valve can be moved between a sealing position and a conducting position; wherein, when the valve is located at the sealing position, the seal is sealed against the inner surface of the pipe to block the channel, and when the valve is located at the conducting position, the seal is separated from the inner surface of the pipe without blocking the channel.

1: Valve

10: Valve body

11: Peripheral wall

111: First end

112: Second end

113: Axle hole

114: Side hole

115: Open your mouth

116: Main diameter section

117: Small path section

118: Reinforced ribs

119: Midpoint radial plane

20: Head

21: Groove

22: convex part

23: Second convex part

30: Seal

40: Pipe fittings

41: Channel

42: flange

43: Internal thread section

44: Card slot

45:Blocking edge

46: Groove

47:Connection hole

48: Grooving

50: Restricted items

51: convex diameter

60: Second seal

70: End cover

71: Stuck Rib

100: Tire valve

Figure 1 is a three-dimensional diagram of a preferred embodiment of the present invention.

Figure 2 is a disassembled diagram of a preferred embodiment of the present invention.

Figure 3 is a cross-sectional view of a preferred embodiment of the present invention.

Figure 4 is a schematic diagram of the conduction state of a preferred embodiment of the present invention.

Figures 5 and 6 are three-dimensional diagrams of a preferred embodiment of the present invention.

Figure 7 is an axial side view of Figure 6.

The following examples are only used to illustrate possible implementations of the present invention, but are not intended to limit the scope of protection of the present invention, so it should be stated in advance.

Please refer to Figures 1 to 7, which show a preferred embodiment of the present invention. The valve 1 for a tire air valve of the present invention includes a valve body 10, a head 20 and a sealing member 30. The tire air valve can be a valve for a bicycle, a car or other wheel-type device. The tire air valve can be, for example, a valve for a tubeless tire or a valve for a tube-type tire.

The valve body 10 includes a peripheral wall 11, the peripheral wall 11 includes a first end 111 and a second end 112, the peripheral wall 11 surrounds an axial hole 113 and is provided with at least one side hole 114 connected to the axial hole 113, and the axial hole 113 has an opening 115 at the first end 111. The head 20 is axially fixedly connected to the second end 112 of the peripheral wall 11 to form a whole, and the head 20 is provided with a groove 21 on the peripheral surface. The sealing member 30 is embedded in the groove 21 and radially protrudes from the groove 21, so as to be sealed against a flange 42 extending radially inward on the inner surface of a pipe member 40 of the tire valve. In this way, it is simple to manufacture, low in cost, quick to assemble and disassemble, stable in structure and strong in strength. Preferably, the valve body 10 is completely free of threads, the peripheral wall 11 and the head 20 are made of the same material (such as plastic) and are integrally formed as a single component, or the two components can be welded, bonded or otherwise fixed to form an integral structure.

The peripheral wall 11 further includes a closed annular large diameter section 116 and a small diameter section 117, and the small diameter section 117 is connected between the large diameter section 116 and the head 20. The large diameter section 116 radially protrudes from the small diameter section 117, and the at least one side hole 114 is disposed in the small diameter section 117. The valve body 10 further includes at least one reinforcing rib 118, and the at least one reinforcing rib 118 extends between the large diameter section 116 and the small diameter section 117 to enhance the structural strength of the peripheral wall 11. The head 20 and the small diameter section 117 have approximately equal radial dimensions, the outer diameter of the large diameter section 116 is larger than the outer diameter of the head 20 and the inner diameter of the pipe 40 at the flange 42, and the outer diameter of the head 20 is smaller than the inner diameter of the pipe 40 at the flange 42, so that the valve 1 can be directly inserted from the outside to the inside and assembled in a pipe of the tire valve, and the volume is reduced and a large gas flow rate is achieved. Furthermore, the large diameter section 116 is preferably a complete annular wall, and the small diameter section 117 is provided with two side holes 114, which are generally rectangular and arranged radially opposite to each other. The total area of the two side holes 114 is preferably not less than the total area of the outer circumference of the small diameter section 117, and has sufficient structural strength and can provide a larger gas flow area, which is conducive to large-flow inflation and deflation. The number of the at least one side hole 114 is not limited to two, and can also be three or more.

In this embodiment, the second end 112 of the peripheral wall 11 is completely covered by the head 20, which can increase the structural strength of the peripheral wall 11. The head 20 includes a protrusion 22 extending into the axial hole 113 toward the first end 111 of the peripheral wall 11, and the head 20 also includes a second protrusion 23 extending toward the second end 112 away from the peripheral wall 11. In the axial direction of the valve body 10, the size of the at least one side hole 114 is at least one-third of the axial size of the valve body 10, so that the valve 1 has a smaller size and still has a large gas flow area; the protrusion 22 does not extend in the axial direction beyond a midpoint radial plane 119 of the at least one side hole 114, which can effectively guide the gas flow to flow smoothly. In addition, in an axial cross section (Figure 3), the surface profile of the protrusion 22 is generally a continuous and smooth W-shape, which can reduce the flow resistance of the gas and effectively guide the gas flow to the two side holes 114.

In this embodiment, the groove 21 is an annular groove, and the seal 30 is a set of rings arranged on the head 20 and embedded in the annular groove. The seal 30 is made of elastic material (such as rubber) and has a good sealing effect. The head 20 has a greater hardness than the seal 30, so that the head 20 can effectively press the seal 30 against the inner surface of the tire valve.

The present invention further provides a tire air valve 100, which includes a valve 1 and a pipe 40. The pipe 40 includes a channel 41 and a flange 42 extending radially inward, the valve 1 is accommodated in the channel 41, the opening 115 of the shaft hole 113 and the seal 30 are respectively located on two opposite sides of the flange 42, the peripheral wall 11 and the seal 30 respectively have an outer diameter greater than the inner diameter of the flange 42, and the valve 1 can be moved between a sealing position (FIG. 3) and a conducting position (FIG. 4); When the valve 1 is in the sealing position, the seal 30 is in sealing contact with the inner surface of the pipe 40 to block the passage 41. When the valve 1 is in the conducting position, the seal 30 is separated from the inner surface of the pipe 40 without blocking the passage 41. The large diameter section 116 can be stopped at the flange 42. At this time, the cross-sectional area of the two side holes 114 is the largest, with high flow rate and rapid gas filling and discharge.

The pipe 40 may be a single component or a multi-piece assembly formed in one piece. The pipe 40 may be one of the components of a tire air nozzle assembly, or the pipe 40 may be formed in one piece and be an adapter of a tire (tubeless or tube-free) air nozzle assembly. The pipe 40 is provided with an internal threaded section 43, and the internal threaded section 43 can be screwed to an external threaded section of the tire air nozzle assembly.

Preferably, the tire valve further includes a limiting member 50, wherein one inner surface of the tube 40 is provided with a slot 44, and the limiting member 50 is inserted into the slot 44 and axially opposite to the peripheral wall 11 to limit the valve 1 in the channel 41. The limiting member 50 can be a C-clip made of metal material, and the limiting member 50 includes a plurality of radially extending radial protrusions 51, which has a large structural strength and can effectively limit the valve 1, and the valve 1 will not fall out of the tube 40 even under extremely high air pressure.

The inner surface of the pipe 40 is convexly provided with a radially extending baffle 45 and a groove 46 adjacent to the baffle 45. One end of the pipe 40 has a connection hole 47 adjacent to the groove 46. The baffle 45 is located between the valve 1 and the groove 46. The groove 46 accommodates a second sealing member 60. In this embodiment, the baffle 45 is an annular convex edge, the groove 46 is an annular groove, and the connection hole 47 is a screw hole for screwing with an external pipe. The second sealing member 60 is a ring member embedded in the groove 46. The second sealing member 60 is an elastic material (such as rubber) and has a good sealing effect. Specifically, the inner diameter of the annular flange is smaller than the inner diameter of the second seal 60. Even if the second seal 60 is deformed by pressure, it will not radially exceed the annular flange, and will not affect the cross-sectional area of the flow channel. The wall surface of the groove 46 relative to the connecting hole 47 is radially concave outward, which can effectively restrain the second seal 60 in the groove 46 without arbitrary displacement or separation, and help the sealing effect of the pipe 40 and the external pipe after being screwed together.

Preferably, the outer circumferential surface of the pipe 40 is provided with at least one circumferentially extending groove 48, and the tire valve 100 further includes an end cap 70, and the inner surface of the end cap 70 is provided with at least one circumferentially extending rib 71, and the at least one rib 71 can be releasably embedded in the at least one groove 48, so that the end cap 70 can be releasably sealed on the pipe 40. The end cap 70 can also be screwed to the pipe 40.

The valve 1 has a large passage that allows sealant to be injected into the tire even after assembly to the rim, so there is no need to disassemble the valve 1. The large passage also prevents the valve 1 from being clogged with sealant and failing. The valve 1 does not extend above the tube 40, so it is less susceptible to damage and breakage during use and tire inflation.

1: Valve

10: Valve body

20: Head

30: Seal

40: Pipe fittings

48: Grooves

50: Restricted items

51: convex diameter

60: Second seal

70: End cover

Claims (9)

A valve for a tire air valve comprises: a valve body, comprising a peripheral wall, the peripheral wall comprising a first end and a second end, the peripheral wall surrounding an axial hole and provided with at least one side hole connected to the axial hole, the axial hole having an opening at the first end; a head, axially fixedly connected to the second end of the peripheral wall to form a whole, and having a groove on the peripheral surface; and a sealing member, embedded in the groove and radially protruding from the groove. The groove is provided for sealingly abutting against a flange extending radially inward on the inner surface of a tube of the tire valve; wherein the peripheral wall further includes a large diameter section and a small diameter section, the small diameter section is connected between the large diameter section and the head, the large diameter section radially protrudes from the small diameter section, the outer diameter of the large diameter section is larger than the outer diameter of the head and the inner diameter of the tube at the flange, and the outer diameter of the head is smaller than the inner diameter of the tube at the flange. A valve as described in claim 1, wherein the valve body further includes at least one reinforcing rib, and the at least one reinforcing rib extends between the large diameter section and the small diameter section. A valve as described in claim 1, wherein in the axial direction of the valve body, the size of the at least one side hole is at least one-third of the axial size of the valve body; the total area of the at least one side hole is not less than the total area of the outer peripheral surface of the small diameter section. A valve as described in claim 1, wherein the head portion includes a protrusion extending into the axial hole toward the first end of the peripheral wall, and the protrusion extends axially no more than a midpoint radial plane of the at least one side hole. A valve as described in claim 4, wherein in an axial section, the surface profile of the protrusion is generally a continuous and smooth W-shape. A valve as described in claim 1, wherein the peripheral wall and the head are made of the same material and are integrally formed as a single component, and the valve body is completely free of threads. A tire valve, comprising a valve as described in any one of claims 1 to 6, and further comprising: a pipe, comprising a channel and a flange extending radially inward, the valve being accommodated in the channel, the opening of the shaft hole and the seal being respectively located on two opposite sides of the flange, the peripheral wall and the seal having an outer diameter greater than the inner diameter of the flange, the valve being movable between a sealing position and a conducting position; wherein, when the valve is located at the sealing position, the seal is in sealing contact with the inner surface of the pipe to block the channel, and when the valve is located at the conducting position, the seal is separated from the inner surface of the pipe without blocking the channel. The tire valve as described in claim 7 further includes a limiting member, wherein one inner surface of the tube is provided with a slot, the limiting member is embedded in the slot and axially opposite to the peripheral wall to limit the valve member in the channel. As described in claim 7, the inner surface of the tube is provided with a radially extending baffle and a groove adjacent to the baffle, one end of the tube has a connection hole adjacent to the groove, the baffle is located between the valve and the groove, the groove accommodates a second sealing member, and the groove is radially concave outward relative to the hole wall of the connection hole.

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