Tire valve and its valve element

Abstract

The invention relates to a tire valve and its valve element. The valve element comprises: a valve body (10) having a circumferential wall (11), wherein the circumferential wall (11) has a first end (111) and a second end (112), wherein the circumferential wall (11) surrounds an interior space (113) and is provided with at least one side hole (114) that communicates with the interior space (113), and wherein the interior space (113) has an opening (115) at the first end (111); a head (20) that is axially fixed to the second end (112) of the circumferential wall (11) and has a groove (21) on its circumferential surface; and a sealing element (30) that is arranged in the groove (21) and projects radially from the groove (21) to seal against the inner surface of the tire valve.When the valve element is in the sealing position, the sealing element rests against the inner surface of a pipe element, and when the valve element is in the open position, the sealing element leaves the inner surface of the pipe element and does not seal the channel.

Description

Technical field

[0001] The invention relates to a component for inflating and deflating tires, in particular a tire valve and its valve element. State of the art

[0002] The tire valve is installed on the wheel rim and protrudes from it for inflation or deflation. Modern bicycle tires come in two main types: tubeless and inner tube, both of which require inflation or deflation via the tire valve. A conventional tire valve primarily consists of a valve stem within a valve body to control the flow of air, thus allowing the tire to maintain a specific pressure.

[0003] The flow rate during inflation and deflation of a conventional tire valve is low, resulting in longer inflation and deflation times. Furthermore, the valve stem or valve assembly of a conventional tire valve has a relatively complex design and large dimensions, making it difficult and time-consuming to process, manufacture, and install. Additionally, all conventional tire valves only provide the inflation and deflation channel for the tire and cannot be used as adapters, meaning they cannot be connected to other conventional tire valves (e.g., if the valve stem cannot seal completely or is missing a valve stem).

[0004] Furthermore, the opening of a conventional valve core is not large enough to allow for the injection of tire sealant when an air leak occurs and the tire's integrity is compromised. Therefore, the sealant must be injected into the tire before the valve core is mounted on the rim. Alternatively, the valve core may need to be removed first to allow the sealant to enter the tire through the valve stem. In either case, however, over time and with use, the sealant can seep into the valve core and impair its proper function, necessitating frequent replacement of the valve core.

[0005] Furthermore, the valve needle of a conventional valve core protrudes above the top of the valve core and can therefore be easily damaged. This is especially true when a hand pump is used to inflate a tire, as this creates lateral stress on the valve core assembly. In this case, the valve needle can easily break or be damaged, leading to failure.

[0006] Therefore, it is necessary to provide a novel and advanced tire valve and its valve element to solve the aforementioned problems. Object of the invention

[0007] The object of the invention is to provide a tire valve and its valve element that have simple manufacturing, low cost, quick assembly and disassembly, small dimensions, stable construction and high strength.

[0008] This problem is solved by the valve element of a tire valve, comprising a valve body having a circumferential wall, wherein the circumferential wall has a first end and a second end, wherein the circumferential wall surrounds an interior space and is provided with at least one side hole that communicates with the interior space, and wherein the interior space has an opening at the first end; a head that is axially fixed to the second end of the circumferential wall and has a groove on its circumferential surface; and a sealing element that is arranged in the groove and projects radially from the groove to seal against the inner surface of the tire valve.

[0009] This task is further accomplished by the tire valve, which has a valve element, with a pipe element having a channel and a flange extending radially inwards, wherein the valve element is housed in the channel, wherein the opening of the interior and the sealing element are located on the two opposite sides of the flange, wherein the circumferential wall and the sealing element each have an outer diameter that is larger than the inner diameter of the flange, and wherein the valve element can be moved between a sealing position and a flow position, wherein, when the valve element is in the sealing position, the sealing element rests against the inner surface of the pipe element, and when the valve element is in the flow position, the sealing element leaves the inner surface of the pipe element and does not seal the channel. Brief description of the drawings Fig. 1 a perspective view of the preferred embodiment of the invention, Fig. 2 an exploded view of the preferred embodiment of the invention, Fig. 3 a sectional view of the preferred embodiment of the invention, Fig. 4 a representation of the passage state of the preferred embodiment of the invention, Fig. 5 and Fig. 6 perspective views of the preferred embodiment of the invention, Fig. 7 an axial side view according to Fig. 6. Ways to implement the invention

[0010] The following embodiments serve only to illustrate the present invention and should not, however, limit the scope of protection of the present invention.

[0011] Fig. 1 to Fig. Figure 7 shows a preferred embodiment of the present invention. The valve element 1 of the tire valve of the present invention comprises a valve body 10, a head 20, and a sealing element 30. The tire valve can be the tire valve of a bicycle, an automobile, or other wheels. The tire valve can be an air valve for tires with or without an inner tube.

[0012] The valve body 10 has a circumferential wall 11. The circumferential wall 11 has a first end 111 and a second end 112. The circumferential wall 11 surrounds an interior space 113 and is provided with at least one lateral hole 114 that communicates with the interior space 113. The interior space 113 has an opening 115 at its first end 111. The head 20 is axially fixed to the second end 112 of the circumferential wall 11. The head 20 has a groove 21 on its circumferential surface. The sealing element 30 is arranged in the groove 21 and projects radially from the groove 21 to seal against the inner surface of the tire valve. Therefore, the invention offers simple manufacturing, low cost, quick assembly and disassembly, stable construction, and high strength. Preferably, the valve body 10 has no thread at all. The circumferential wall 11 and the head 20 are made of the same material (e.g. plastic) and are formed in one piece.The valve body can also be manufactured by welding, gluing, or other methods of joining two components.

[0013] The circumferential wall 11 further comprises a closed, annular section 116 with a large diameter and a section 117 with a small diameter. The small-diameter section 117 is connected between the large-diameter section 116 and the head 20. The large-diameter section 116 projects radially outward from the small-diameter section 117. The at least one side hole 114 is formed in the small-diameter section 117. The valve body 10 also comprises at least one reinforcing rib 118. The at least one reinforcing rib 118 extends along the large-diameter section 116 and the small-diameter section 117 to increase the structural strength of the circumferential wall 11. The head 20 and the small-diameter section 117 have substantially the same radial dimensions.In this way, the valve element 1 can be inserted and mounted directly from the outside into a channel of the tire valve, thereby reducing the volume and achieving a high flow rate. Furthermore, the large-diameter section 116 is preferably a complete annular wall. The small-diameter section 117 is provided with two side holes 114. The two side holes 114 are essentially rectangular and arranged radially opposite each other. The total area of ​​the two side holes 114 is preferably not smaller than the total area of ​​the outer circumferential wall of the small-diameter section 117. This allows for sufficient structural strength and a high flow rate, enabling a large airflow during inflation and deflation. The number of side holes 114 is not limited to two, but can also be three or more.

[0014] In this embodiment, the second end 112 of the circumferential wall 11 is completely covered by the head 20, which can increase the structural strength of the circumferential wall 11. The head 20 has a projection 22 that extends into the interior 113 towards the first end 111 of the circumferential wall 11. The head 20 also has a second projection 23 that extends in the opposite direction to the second end 112 of the circumferential 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. The valve element 1 thus has a smaller dimension and yet a large airflow cross-section. The projection 22 does not extend axially further than a mean radial plane 119 of the at least one side hole 114, which allows the airflow to be guided effectively. Furthermore, the surface profile of the projection 22 in axial section ( Fig. 3) a continuous and smooth W-shape that can reduce the airflow resistance and effectively direct the airflow to the two side holes 114.

[0015] In this embodiment, the groove 21 is an annular groove. The sealing element 30 is a ring that is inserted into the head 20 and received in the annular groove. The sealing element 30 is made of elastic material (e.g., rubber) and has a good sealing effect. The head 20 has a greater hardness than the sealing element 30. In this way, the head 20 can press the sealing element 30 very firmly and effectively against the inner surface of the tire valve.

[0016] The invention further provides a tire valve 100 comprising a valve element 1 and a pipe element 40. The pipe element 40 has a channel 41 and a flange 42 extending radially inwards. The valve element 1 is housed in the channel 41. The opening 115 of the interior 113 and the sealing element 30 are located on the two opposite sides of the flange 42. The circumferential wall 11 and the sealing element 30 each have an outer diameter that is larger than the inner diameter of the flange 42. The valve element 1 can be switched between a sealing position ( Fig. 3) and a passage position ( Fig.4) can be moved. When the valve element 1 is in the sealing position, the sealing element 30 rests against the inner surface of the pipe element 40 to seal the channel 41. When the valve element 1 is in the open position, the sealing element 30 leaves the inner surface of the pipe element 40 and does not seal the channel 41. The large-diameter section 116 can be blocked by the flange 42. In this position, the available cross-sectional area of ​​the two side holes 114 is maximized, allowing for a high flow rate and rapid pumping and expulsion of air.

[0017] The pipe element 40 can be a single piece or a multi-piece element. The pipe element 40 can be a component of the tire valve. Alternatively, the pipe 40 can be formed integrally with the valve and create an adapter for the tire's valve assembly (with or without an inner tube). The pipe element 40 is provided with an internally threaded section 43. The internally threaded section 43 can be screwed onto an externally threaded section of the tire's valve assembly.

[0018] Preferably, the tire valve further comprises a limiting element 50. An inner surface of the tube element 40 is provided with a receiving groove 44. The limiting element 50 engages in the receiving groove 44 and lies axially opposite the circumferential wall 11 to restrict the valve element 1 in the channel 41. The limiting element 50 can be a C-shaped metal ring. The limiting element 50 forms several radial projections 51, has high structural rigidity, and can effectively restrict the valve element 1. Even under the influence of extremely high air pressure, the valve element 1 does not detach from the tube element 40.

[0019] The inner surface of the pipe element 40 forms a radially extending shoulder 45 and a groove 46 adjacent to the shoulder 45. An end section of the pipe element 40 has a connecting hole 47 next to the groove 46. The shoulder 45 lies between the valve element 1 and the groove 46. The groove 46 accommodates a second sealing element 60. In this embodiment, the shoulder 45 is an annular flange. The groove 46 is an annular groove. The connecting hole 47 is a threaded hole for screwing it to an outer pipe. The second sealing element 60 engages in the groove 46. The second sealing element 60 is made of elastic material (e.g., rubber) and has a good sealing effect. In particular, the inner diameter of the annular flange is smaller than the inner diameter of the second sealing element 60. Even if the second sealing element 60 is deformed under pressure, it does not protrude radially from the annular flange and does not impair the cross-sectional area of ​​the flow channel.The groove 46 is radially recessed outwards relative to the hole wall of the connecting hole 47, which allows the second sealing element 60 to be effectively held in the groove 46 and prevents it from easily deviating or coming loose, thus improving the sealing effect after screwing together the pipe element 40 and the outer pipe.

[0020] Preferably, the outer circumferential surface of the pipe element 40 is provided with at least one locking groove 48 extending circumferentially. The tire valve 100 also includes an end cap 70. The inner surface of the end cap 70 is provided with at least one locking projection 71 extending circumferentially. The at least one locking projection 71 releasably engages in the at least one locking groove 48, so that the end cap 70 releasably covers the pipe element 40. The end cap 70 can also be screwed to the pipe element 40.

[0021] Valve element 1 has a large channel. This allows the tire sealant to be injected into the tire, even after it has been mounted on the rim. Removing valve element 1 is therefore unnecessary. The large channel also prevents the tire sealant from clogging and causing the valve element 1 to fail. Valve element 1 does not protrude beyond tube element 40. It is therefore less susceptible to damage and breakage during use and inflation of the tire. Reference symbol list 1 valve element 10 valve bodies 11 Perimeter wall 111 first end 112 second end 113 Interior 114 side hole 115 Opening 116 Large diameter section 117 Small diameter section 118 Reinforcing rib 119 mean radial plane 20 heads 21 Nut 22 lead 23 second lead 30 sealing element 40 pipe elements Channel 41 42 flange 43 Internal thread section 44 recordings 45 Shoulder 46 Nut 47 Connecting hole 48 Locking groove 50 boundary element 51 radial projection 60 second sealing element 70 End cap 71 Rastvorsprung 100 tire valves

Claims

[1] Valve element of a tire valve, comprising a valve body (10) having a peripheral wall (11), the peripheral wall (11) having a first end (111) and a second end (112), the peripheral wall (11) surrounding an interior space (113) and being provided with at least one side hole (114) communicating with the interior space (113), and the interior space (113) having an opening (115) at the first end (111); a head (20) axially fixedly connected to the second end (112) of the peripheral wall (11) and having a groove (21) on its peripheral surface; and a sealing element (30) arranged in the groove (21) and projecting radially out of the groove (21) to form a sealing engagement with the inner surface of the tire valve. [2] Valve element according to claim 1, characterized byin that the peripheral wall (11) has a large diameter portion (116) and a small diameter portion (117), the small diameter portion (117) being connected between the large diameter portion (116) and the head (20), and the large diameter portion (116) projecting radially from the small diameter portion (117). [3] Valve element according to claim 2, characterized by that the valve body (10) further comprises at least one reinforcing rib (118), wherein the at least one reinforcing rib (118) extends along the large diameter portion (116) and the small diameter portion (117). [4] Valve element according to claim 2, characterized bythat 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) and the total area of ​​the two side holes (114) is not smaller than the total area of ​​the outer peripheral wall of the small diameter portion (117). [5] Valve element according to claim 1, characterized by in that the head (20) has a projection (22) which projects into the interior (113) in the direction of the first end (111) of the peripheral wall (11), wherein the projection (22) extends axially no further than a central radial plane (119) of the at least one side hole (114). [6] Valve element according to claim 5, characterized by that the surface profile of the projection (22) in axial section is a continuous and smooth W-shape. [7] Valve element according to claim 1, characterized bythat the peripheral wall (11) and the head (20) are made of the same material and are formed in one piece, the valve body (10) having no thread at all. [8] A tire valve comprising a valve element according to any one of claims 1 to 7, comprising a tubular element (40) having a channel (41) and a flange (42) extending radially inward, wherein the valve element (1) is accommodated in the channel (41), wherein the opening (115) of the interior space (113) and the sealing element (30) are located on the two opposite sides of the flange (42), wherein the peripheral wall (11) and the sealing element (30) each have an outer diameter that is larger than the inner diameter of the flange (42), and wherein the valve element (1) can be moved between a sealing position and a passage position, wherein, when the valve element (1) is in the sealing position, the sealing element (30) sealingly abuts the inner surface of the tubular element (40), and when the valve element (1) is in the passage position, the sealing element (30) seals the inner surface of the tubular element (40). leaves and does not seal the channel (41). [9] Tire valve according to claim 8, characterized by a limiting element (50), wherein the inner surface of the tubular element (40) is provided with a receiving groove (44), wherein the limiting element (50) engages in the receiving groove (44) and lies axially opposite the peripheral wall (11) in order to restrict the valve element (1) in the channel (41). [10] Tire valve according to claim 8, characterized by in that the inner surface of the tubular element (40) forms a radially extending shoulder (45) and a groove (46) adjacent to the shoulder (45), wherein an end section of the tubular element (40) has a connecting hole (47) next to the groove (46), wherein the shoulder (45) lies between the valve element (1) and the groove (46), wherein the groove (46) receives a second sealing element (60), and wherein the groove (46) is recessed radially outwards relative to the hole wall of the connecting hole (47).

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