Inflating valve not easy to loosen

Abstract

The inflating valve comprises a first pipe body and a second pipe body, the first pipe body and the second pipe body are arranged at an obtuse angle, a valve cap is connected to the first pipe body in a threaded mode, and the second pipe body is used for being arranged in a connecting hole of a hub in a penetrating mode; the second pipe body is provided with a first fixing plate and a second fixing plate, the side, close to the second fixing plate, of the first fixing plate is connected with a first sealing piece, the side, close to the first fixing plate, of the second fixing plate is connected with a second sealing piece, and the first sealing piece and the second sealing piece are used for being arranged in the connecting hole in a penetrating mode and abutting against the inner wall of the connecting hole. According to the valve cap, the first pipe body and the second pipe body are arranged at the obtuse angle, so that in the screwing process of the valve cap, force in the circumferential direction cannot affect the second pipe body, the first sealing ring and the second sealing ring are matched, and the stability of the structure between the inflating valve and the hub is guaranteed.

Description

Technical Field

[0001] This application relates to the field of valve technology, and in particular to a valve that is not easily loosened. Background Technology

[0002] The valve is a key component of a tire or inflation device, used for inflating, deflating, and maintaining air pressure. It generally consists of a valve core, valve body, and connecting parts. The valve core is the crucial component controlling the flow of air, typically composed of sealing rubber, a spring, and a valve core. The valve body connects the tire to the inflation device and comes in various shapes and sizes to accommodate different tire and rim installation requirements. When inflating a tire using an inflation device, the nozzle connects to the valve. Applying pressure causes the valve core to overcome the spring force and move upward, opening the air passage and allowing air to enter the tire. After inflation, the valve core returns to its original position under the spring force, sealing the valve and preventing air leakage from the tire. To deflate, simply press the lever at the top of the valve core to reopen the valve and expel the air from the tire.

[0003] Valve stems can be classified by shape into straight valve stems, angled valve stems, beveled valve stems, and pagoda valve stems. The most commonly used are straight valve stems and angled valve stems. In angled valve stems, there is a certain angle between the valve stem and the mounting base, usually 90 degrees or other specific angles. This type of valve stem is mainly used in some specially designed wheel rims or tire mounting positions where the space is relatively tight. However, the part that connects the valve cap and the part that connects to the wheel hub are still coaxial straight valve stem structures. When the user screws on the valve cap, the circumferential force applied to the valve stem body will be transmitted along the axial direction of the valve stem, thereby causing the entire valve stem body to rotate circumferentially. Gaps can easily form between the valve stem body and the wheel hub due to rotation, causing gas to leak from the gaps. Utility Model Content

[0004] This application provides a valve stem that is not easily loosened.

[0005] The valve stem that is not easily loosened provided in this application adopts the following technical solution:

[0006] A valve stem that is not easily loosened includes a first tube and a second tube, which are set at an obtuse angle. A valve cap is threaded onto the first tube, and the second tube is used to pass through a connecting hole in a wheel hub. A first fixing plate and a second fixing plate are provided on the second tube. A first sealing element is connected to the side of the first fixing plate near the second fixing plate, and a second sealing element is connected to the side of the second fixing plate near the first fixing plate. The first sealing element and the second sealing element are used to pass through the connecting hole and abut against the inner wall of the connecting hole.

[0007] Preferably, the inner diameter of the second fixing plate is smaller than that of the second tube body, and the second sealing element is fixed on the second fixing plate, wherein the inner diameter of the second sealing element is smaller than that of the second tube body.

[0008] Preferably, the end of the second tube facing away from the first tube is also connected to a third tube. The third tube is located on the side of the second fixing plate facing away from the first fixing plate and is threadedly connected to a fourth tube. The end of the fourth tube abuts against the second fixing plate.

[0009] Preferably, the third tube includes a tapered portion and a straight cylindrical portion. The large-diameter end of the tapered portion is connected to the second tube, and the small-diameter end is connected to the straight cylindrical portion. The straight cylindrical portion has an external thread. The fourth tube has a first connecting portion that matches the tapered portion and a second connecting portion that matches the straight cylindrical portion. The first connecting portion is connected to the tapered portion and abuts against the second fixing plate. The second connecting portion has an internal thread that engages with the external thread.

[0010] Preferably, the fourth tube further includes a bent portion, which is connected to the end of the second connecting portion opposite to the first connecting portion.

[0011] In summary, this application includes at least one of the following beneficial technical effects:

[0012] 1. By setting the first and second pipe bodies at an obtuse angle, this application ensures that the circumferential force will not affect the second pipe body during the valve cap screwing process. Combined with the first and second sealing rings, this ensures the structural stability between the valve stem and the hub, making it less prone to gap formation.

[0013] 2. By setting a fourth tube body for abutting against the second fixed plate, the second fixed plate can better abut against the hub, further enhancing the stability of the hub structure.

[0014] 3. By setting the fourth tube body to a bendable structure, the valve stem can flexibly adapt to the structure inside the wheel hub. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of this application.

[0016] Figure 2 yes Figure 1 Cross-sectional view along AA.

[0017] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0018] Explanation of reference numerals in the attached drawings: 1. First tube body; 2. Second tube body; 3. Valve cap; 4. First fixing plate; 5. Second fixing plate; 51. Perforation; 6. First seal; 7. Second seal; 8. Third tube body; 81. Tapered section; 82. Straight section; 821. External thread; 9. Fourth tube body; 91. First connecting part; 92. Second connecting part; 921. Internal thread; 93. Bend. Detailed Implementation

[0019] The present application will be further described in detail below with reference to the accompanying drawings.

[0020] This application provides a valve stem that is not easily loosened, such as Figures 1 to 3 As shown, the device includes a first tube 1 and a second tube 2, which are set at an obtuse angle. A valve cap 3 is threaded onto the first tube 1, and a valve core is installed inside the first tube 1. The second tube 2 is used to pass through the connecting hole of the wheel hub. A first fixing plate 4 and a second fixing plate 5 are provided on the second tube 2. A first sealing element 6 is connected to the side of the first fixing plate 4 near the second fixing plate 5. The first sealing element 6 is a first sealing ring, which forms a first annular slope with a gradually decreasing diameter. The large diameter end of the first annular slope... A second sealing element 7 is connected to the side of the first fixing plate 4 near the second fixing plate 5. The second fixing plate 5 is connected to the side of the first fixing plate 4 near the second fixing plate 4. The second sealing element 7 is a second sealing ring. The second sealing ring forms a second annular slope with a gradually decreasing diameter. The large diameter end of the second annular slope is connected to the side of the second fixing plate 5 near the first fixing plate 4. The size of the small diameter ends of the first sealing ring and the second sealing ring is the same as the outer circumferential diameter of the second tube body 2. The first sealing ring and the second sealing ring are used to pass through the connecting hole and abut against the inner wall of the connecting hole.

[0021] The first fixing plate 4 and the first sealing element 6 are fixed to the second tube body 2. The second fixing plate 5 is a second elastic fixing plate. The first sealing element 6 and the second sealing element 7 are both made of elastic material. The inner diameter of the second fixing plate 5 is smaller than that of the second tube body 2. The second sealing element 7 is fixed to the second fixing plate 5. The inner diameter of the second sealing element 7 is smaller than that of the second tube body 2. The second tube body 2 and the second sealing element 7 are detachably fitted onto the second tube body 2. A third tube body 8 is also connected to the end of the second tube body 2 facing away from the first tube body 1. The third tube body 8 is located on the side of the second fixing plate 5 facing away from the first fixing plate 4. The third tube body 8 is smoothly connected to the second tube body 2. The first tube body 1, the second tube body 2, and the third tube body 8 are integrally cast. The fourth tube 9 includes a tapered portion 81 and a straight cylindrical portion 82. The large-diameter end of the tapered portion 81 is connected to the second tube body 2, and the small-diameter end is connected to the straight cylindrical portion 82. The straight cylindrical portion 82 has an external thread 821. The fourth tube 9 has a first connecting portion 91 that matches the tapered portion 81 and a second connecting portion 92 that matches the straight cylindrical portion 82. The first connecting portion 91 is connected to the tapered portion 81 and abuts against the second fixing plate 5. The second connecting portion 92 has an internal thread 921 that meshes with the external thread 821. The fourth tube 9 also includes a bent portion 93, which is connected to the end of the second connecting portion 92 that faces away from the first connecting portion 91. The bent portion 93 has a bendable corrugated structure and can be bent as needed.

[0022] The working principle of this non-loosening valve stem is as follows: During installation, the third tube 8 and the second tube 2 are first inserted through the connecting hole of the hub. The first seal 6 is gradually pressed into the connecting hole until the outer surface of the hub abuts against the first fixing plate 4. Then, the second seal 7 and the second fixing plate 5 are sequentially fitted into the second tube 2 along the direction of the third tube 8 and the second tube 2. The through hole 51 of the second fixing plate 5 and the inner diameter of the second sealing ring are smaller than those of the second tube 2, which can firmly fix it to the second tube 2. The second seal 7 is pressed into the connecting hole from the small diameter end to the large diameter end until the second tube 2 touches the inner surface of the hub. The fourth tube 9 is connected by internal thread 921 and external thread 821. The fitting of the first connecting part 91 with the conical part 81 and abuts against the second fixed plate 5, and the bending part 93 can be bent according to the needs of the inner structure of the wheel hub. By setting the first tube 1 and the second tube 2 at an obtuse angle, the circumferential force of the valve cap 3 during the screwing process will not affect the second tube 2. With the cooperation of the first sealing member 6 and the second sealing member 7, the stability of the structure between the valve and the wheel hub is guaranteed. By setting the fourth tube 9 for abutting against the second fixed plate 5, the second fixed plate 5 can better abut against the wheel hub, further enhancing the stability of the wheel hub structure. By setting the fourth tube 9 as a bendable structure, the valve can flexibly adapt to the structure inside the wheel hub.

[0023] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A valve stem that is not easily loosened, characterized in that: It includes a first tube body (1) and a second tube body (2), the first tube body (1) and the second tube body (2) are set at an obtuse angle, the first tube body (1) is threaded with a valve cap (3), and the second tube body (2) is used to pass through the connection hole of the wheel hub; The second tube body (2) is provided with a first fixing plate (4) and a second fixing plate (5). The first fixing plate (4) is connected to a first sealing member (6) on the side near the second fixing plate (5). The second fixing plate (5) is connected to a second sealing member (7) on the side near the first fixing plate (4). The first sealing member (6) and the second sealing member (7) are used to pass through the connection hole and abut against the inner wall of the connection hole.

2. The valve stem that is not easily loosened according to claim 1, characterized in that: The inner diameter of the second fixing plate (5) is smaller than that of the second tube body (2), and the second sealing element (7) is fixed on the second fixing plate (5). The inner diameter of the second sealing element (7) is smaller than that of the second tube body (2).

3. A valve stem that is not easily loosened according to claim 1, characterized in that: The second tube (2) is connected to a third tube (8) at one end facing away from the first tube (1). The third tube (8) is located on the side of the second fixing plate (5) facing away from the first fixing plate (4) and is threadedly connected to a fourth tube (9). The end of the fourth tube (9) abuts against the second fixing plate (5).

4. A valve stem that is not easily loosened according to claim 3, characterized in that: The third tube (8) includes a tapered portion (81) and a straight cylindrical portion (82). The large-diameter end of the tapered portion (81) is connected to the second tube (2), and the small-diameter end is connected to the straight cylindrical portion (82). The straight cylindrical portion (82) is formed with an external thread (821). The fourth tube (9) has a first connecting part (91) that matches the tapered part (81) and a second connecting part (92) that matches the straight part (82). The first connecting part (91) is connected to the tapered part (81) and abuts against the second fixing plate (5). The second connecting part (92) has an internal thread (921) that meshes with the external thread (821).

5. A valve stem that is not easily loosened according to claim 4, characterized in that: The fourth tube (9) also includes a bend (93), which is connected to the end of the second connecting part (92) facing away from the first connecting part (91).

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