Pressure control deflation inflating valve
Through the design of the pressure-controlled deflation valve, the adjustment screw, spring and pin bar structure, combined with the sealing and opening of the sliding cover, the problem of inaccurate deflation of the existing valve is solved, and a simple and fast fixed pressure deflation effect is achieved.
Patent Information
- Application Number
- CN202422235655.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-12
AI Technical Summary
It is difficult to achieve precise control when deflation is performed, and frequent charging and deflation operations are required, and the operation is complicated and cannot meet the needs of quickly reducing tire pressure.
A pressure-controlled vent valve is designed. By adjusting the mating structure of screws, springs and top rods, combined with the sealing and opening of the sliding cover, the vent pressure is adjusted, and the deflation operation is simplified.
Accurate fixed pressure deflation is achieved, with simple operation and good user experience. Deflation can be completed in just one operation, meeting the need to quickly reduce tire pressure.
Smart Images
Figure CN223058708U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a valve stem, in particular to a pressure-controlled air-release valve stem. Background Art
[0002] The valve stem is an important part of an automobile tire. The valve stem is installed on the wheel hub. After the tire is installed on the wheel hub, one end of the air passage on the valve stem communicates with the inner cavity of the tire. When it is necessary to control the air release of the tire, it is necessary to control the movement of the valve core, and then the opening of the valve stem is realized, so that the high-pressure gas in the tire is automatically discharged. For such a valve stem, when releasing air, generally, the valve core is pressed to move to open the valve stem, and then the continuous discharge of gas is realized, or the valve core is directly screwed out completely to realize the complete air release of the tire. When an automobile travels on an uneven road surface for a long time, in order to have a better driving experience, the driver often needs to reduce the air pressure of the tire. If such a valve stem is also used to release air by pressing the valve core, it is difficult to accurately control the air release amount, and frequent inflation and deflation operations are required to reduce the tire pressure in the tire to the required value. The deflation operation is very cumbersome, and this valve stem needs to repeat the above operations to realize the deflation operation every time it releases air, and it is difficult to meet some application scenarios that require rapid reduction of tire pressure. Summary of the Utility Model
[0003] In view of the deficiencies of the background art, the technical problem to be solved by the utility model is to provide a pressure-controlled air-release valve stem for solving the above problems.
[0004] To this end, the utility model is implemented as follows:
[0005] A pressure-controlled air-release valve stem, characterized in that: it includes a valve body, an air passage is opened on the valve body, the intake end of the air passage communicates with the inner cavity of the tire, an air cavity is arranged in the valve body, an exhaust hole communicating with the air cavity is arranged on the side wall of the valve body, a push rod is slidably arranged in the air cavity, an adjusting screw is threadedly connected in the valve body, a spring is arranged between the adjusting screw and the push rod, the push rod can block the outlet end of the air passage, when the pressure of the gas in the air passage on the push rod is greater than the pressure of the spring on the push rod, the push rod is pushed open by the gas in the air passage and the air passage and the air cavity are communicated, a sliding cover is movably arranged outside the valve body, the sliding cover can slide to the exhaust hole to block the exhaust hole, or slide away from the exhaust hole to open the outlet end of the exhaust hole.
[0006] One end of the valve body is connected with a cap, the cap covers the adjusting screw and limits the position of the sliding cover.
[0007] A rubber pad is arranged on the top of the sliding cover, and the inner circle of the rubber pad is tightened on the outer side wall of the valve body.
[0008] On the outer side wall of the valve body, clamping grooves are provided on both the upper and lower sides of the exhaust hole. A first sealing ring is arranged in the clamping groove, and the first sealing ring can cooperate with the sliding cover to seal the air outlet end of the exhaust hole.
[0009] A second sealing ring is arranged at one end of the ejector rod close to the air passage.
[0010] For a pressure-controlled air-release valve nozzle of the above technical solution, by setting up a structure with an adjusting screw, a spring and an ejector rod in cooperation, the adjustment of the air-release pressure is realized. Then, the exhaust hole is blocked and opened by the sliding cover to realize the rapid constant-pressure air-release operation after the air-release pressure is adjusted. It replaces the traditional way of releasing air by pressing or unscrewing the valve core. Only one operation is required to complete the accurate constant-pressure air release, the operation is simpler, and the user experience is better. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The present utility model has the following drawings:
[0012] Figure 1 It is a structural diagram of the present utility model when it is arranged on the wheel hub;
[0013] Figure 2 It is a cross-sectional view of the valve body of the present utility model when it is closed;
[0014] Figure 3 It is a cross-sectional view of the valve body of the present utility model when it is opened;
[0015] Figure 4 It is an external structural diagram of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0016] As shown in the figure, a pressure-controlled air-release valve nozzle disclosed by the present utility model includes a valve body 7, and the valve body is connected to a wheel hub 2. In actual application, this kind of valve nozzle of the present application is only used for exhausting air, and a valve nozzle 3 with a conventional structure needs to be provided on the wheel hub 2 for the inflation function. An air passage 14 is opened in the valve body 7, and the intake end of the air passage 14 is communicated with the inner cavity of the tire 1. An air cavity 11 is provided in the valve body 7, and an exhaust hole 15 communicated with the air cavity 11 is provided on the side wall of the valve body 7. A push rod 12 is slidably arranged in the air cavity 11. An adjusting screw 6 is threadedly connected in the valve body 7, and a spring 8 is arranged between the adjusting screw 6 and the push rod 12. The push rod 12 can block the outlet end of the air passage 14. When the pressure of the gas in the air passage 14 on the push rod 12 is greater than the pressure of the spring 8 on the push rod 12, the push rod 12 is pushed open by the gas in the air passage 14 and the air passage 14 is communicated with the air cavity 11. A sliding cover 16 is movably arranged outside the valve body 7. The sliding cover 16 can slide to the exhaust hole 15 to block the exhaust hole 15, or slide away from the exhaust hole 15 to open the outlet end of the exhaust hole 15. Further, one end of the valve body 7 is connected with a cap 5. The cap 5 covers the adjusting screw 6 and limits the position of the sliding cover 16 to ensure that the sliding cover 16 can stably block the exhaust hole 15 when no air-release operation is carried out. A rubber pad 17 is arranged on the top of the sliding cover 16, and the inner circle of the rubber pad 17 is clamped tightly on the outer side wall of the valve body 7. Clamping grooves 10 are arranged on the upper and lower sides of the exhaust hole 15 on the outer side wall of the valve body 7, and a first sealing ring 9 is arranged in the clamping grooves 10. The first sealing ring 9 can cooperate with the sliding cover 16 to seal the outlet end of the exhaust hole 15. The sealing performance of the sliding cover 16 blocking the exhaust hole 15 is improved. A second sealing ring 13 is arranged at one end of the push rod 12 close to the air passage 14 to improve the sealing performance of the push rod 12 blocking the air passage 14.
[0017] When using the valve stem of the present utility model, it is only necessary to install the valve stem of the present utility model on the original tire and use it simultaneously with the original ordinary valve stem. The working principle of the present utility model is as follows: When no deflation is required, the sliding cover 16 is controlled to slide to the blocking position to block the air outlet end of the exhaust hole 15, thereby ensuring that the gas in the tire 1 will not be discharged from the valve body. When indefinite-pressure deflation is carried out, the sliding cover 16 is slid to open the air outlet end of the exhaust hole 15, and the adjusting screw 6 is rotated to move it away from the ejector rod 12 to an appropriate position to reduce the pressure exerted by the spring 8 on the ejector rod 12. The gas in the tire 1 squeezes the ejector rod 12 to move and open the air outlet end of the air passage 14. The gas in the tire 1 enters the air chamber 11 and is discharged from the exhaust hole 15. As the gas in the tire is continuously discharged, when the pressure exerted by the gas in the tire 1 on the ejector rod 12 is slightly less than the pressure exerted by the spring 8 on the ejector rod 12, the ejector rod 12 will be pressed against the air outlet end of the air passage 14 by the spring 8 to block the air passage 14. Then, the sliding cover 16 is slid to close the exhaust hole 15, and the cap 5 is screwed on. When constant-pressure exhaust is required, the sliding cover 16 is slid to open the exhaust hole 15. First, the adjusting screw 6 is adjusted to make the exhaust hole 15 deflate, and the tire pressure in the tire 1 is monitored in real time through the tire pressure monitoring device. Until it is monitored that the tire pressure of the tire 1 has decreased to the required size, it means that the position of the adjusting screw 6 has been adjusted in place at this time. Then, the sliding cover 16 is controlled to slide to close the exhaust hole 15, and the cap 5 is screwed on. In the future, every time the tire pressure needs to be reduced to this set value, there is no need to control the adjusting screw 6 to act. Just unscrew the cap 5 and slide the sliding cover 16 to open the exhaust hole 15, and constant-pressure deflation can be carried out, realizing rapid constant-pressure deflation of the tire without moving the adjusting screw 6.
[0018] It should be noted that before use, the tire pressure can be measured through the original valve stem on the tire by an instrument for measuring tire pressure. Each time the adjusting screw 6 is rotated to the corresponding position, the tire pressure is measured once, and then the sliding cover 16 is slid once, and the result of each measurement is used as an empirical value. Therefore, when using it next time, in the absence of a tire pressure measuring instrument, only the adjusting screw needs to be rotated to the required position to adjust the tire to the required tire pressure. Or the empirical value of the tire pressure measurement is set on the adjusting screw or at a position corresponding to the adjusting screw for easy adjustment at one time.
[0019] With this structure of the present utility model, by setting up the structure of the adjusting screw, the spring and the ejector rod in cooperation, the adjustment of the deflation pressure is realized. Then, by using the sliding cover to block and open the exhaust hole, the rapid constant-pressure deflation operation after adjusting the deflation pressure is realized. It replaces the traditional way of deflating by pressing or unscrewing the valve core. Only one operation is required to complete precise constant-pressure deflation, the operation is simpler, and the user experience is better.
Claims
1. A pressure-controlled air-release valve, characterized in that: It includes a valve body (7). An air passage (14) is provided in the valve body (7). The intake end of the air passage (14) communicates with the inner cavity of a tire (1). An air chamber (11) is also provided in the valve body (7). An exhaust hole (15) communicating with the air chamber (11) is provided on the side wall of the valve body (7). A push rod (12) is slidably arranged in the air chamber (11). An adjusting screw (6) is threadedly connected in the valve body (7). A spring (8) is arranged between the adjusting screw (6) and the push rod (12). The push rod (12) can block the outlet end of the air passage (14). When the pressure of the gas in the air passage (14) on the push rod (12) is greater than the pressure of the spring (8) on the push rod (12), the push rod (12) is pushed open by the gas in the air passage (14) and the air passage (14) communicates with the air chamber (11). A sliding cover (16) is movably arranged outside the valve body (7). The sliding cover (16) can slide to the exhaust hole (15) to block the exhaust hole (15), or slide away from the exhaust hole (15) to open the outlet end of the exhaust hole (15).
2. The pressure-controlled air-release valve stem according to claim 1, wherein One end of the valve body (7) is connected with a cap (5). The cap (5) covers the adjusting screw (6) and limits the position of the sliding cover (16).
3. The pressure-controlled air-release valve nozzle according to claim 1, wherein A rubber pad (17) is arranged on the top of the sliding cover (16). The inner ring of the rubber pad (17) is clamped tightly on the outer side wall of the valve body (7).
4. The pressure-controlled air-release valve stem according to claim 1, characterized in that Clamping grooves (10) are arranged on the upper and lower sides of the exhaust hole (15) on the outer side wall of the valve body (7). A first sealing ring (9) is arranged in the clamping grooves (10). The first sealing ring (9) can cooperate with the sliding cover (16) to seal the outlet end of the exhaust hole (15).
5. The pressure-controlled air-release valve nozzle according to claim 1, characterized in that A second sealing ring (13) is arranged at one end of the push rod (12) close to the air passage (14).