Leakage-proof auxiliary mechanism for inflating valve

Abstract

The utility model relates to the field of inflating valves, and discloses a leakproof auxiliary mechanism for an inflating valve, which comprises an inflating pipe, a core body is arranged on the inner wall of the inflating pipe, a needle rod is arranged at the top end of the core body, a leakproof mechanism is arranged on the outer wall of the inflating pipe, and the leakproof mechanism comprises an anti-loose component and a reset component. The anti-loosening assembly comprises a supporting sleeve, the supporting sleeve is fixedly connected to the outer wall of the inflating pipe, the outer wall of the supporting sleeve is slidably connected with a sliding sleeve, the outer wall of the inflating pipe is in threaded connection with a sealing sleeve, the top end of the sealing sleeve is fixedly connected with a sealing plate, and the inner wall of the sliding sleeve is fixedly connected with a rubber block. According to the utility model, through the arrangement of the leakage-proof mechanism, after the sealing sleeve is installed, the sliding sleeve can be moved to be sleeved on the outer wall of the sealing sleeve, and meanwhile, the sliding sleeve can drive the rubber block to be inserted into the sealing groove, so that the connection position of the sliding sleeve and the sealing groove can be prevented from being directly exposed during use, and meanwhile, the rubber block can prevent the sealing sleeve from rotating and loosening.

Description

Technical Field

[0001] The utility model relates to the field of valve nozzles, in particular to an anti-leakage auxiliary mechanism for valve nozzles. Background Technique

[0002] A valve nozzle is a common tire accessory, mainly composed of an air injection pipe, a sealing sleeve and a valve core. The air injection pipe is mainly used to connect the air injection device, and the valve core is mainly used for the air intake of the tire and preventing the tire from leaking air. At the same time, after the air injection is completed, installing a sealing sleeve on the outer wall of the air injection pipe can further improve the sealing performance of the air injection pipe.

[0003] In the prior art, the sealing sleeve and the air injection pipe are generally connected by threads, and the connection position between the sealing sleeve and the air injection pipe is generally directly exposed to the outside. In this way, during the use of the overall device, the threads at the connection position between the sealing sleeve and the air injection pipe are prone to rust, which easily leads to the loosening of their connection. When their connection is loose, the gas leaking from the valve core can directly escape through the gap at the connection position between the sealing sleeve and the air injection pipe, resulting in air leakage. The anti-leakage effect of the overall device during use is poor. Therefore, an anti-leakage auxiliary mechanism for valve nozzles is proposed to solve the above problems. Summary of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides an anti-leakage auxiliary mechanism for valve nozzles, aiming to improve the problem that "in the prior art, the connection position between the air injection pipe and the sealing sleeve lacks protection, so air leakage is likely to occur at their connection position".

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: an anti-leakage auxiliary mechanism for valve nozzles, including an air injection pipe, a core body is installed on the inner wall of the air injection pipe, a needle rod is arranged at the top of the core body, an anti-leakage mechanism is arranged on the outer wall of the air injection pipe, the anti-leakage mechanism includes an anti-loosening component and a reset component, the anti-loosening component includes a support sleeve, the support sleeve is fixedly connected to the outer wall of the air injection pipe, a sliding sleeve is slidably connected to the outer wall of the support sleeve, a closing sleeve is threadedly connected to the outer wall of the air injection pipe, a closing plate is fixedly connected to the top of the closing sleeve, a rubber block is fixedly connected to the inner wall of the sliding sleeve, a closing groove is arranged on the outer wall of the closing sleeve, the rubber block is inserted into the inner wall of the closing groove, and an observation component is arranged on the inner wall of the closing sleeve.

[0006] As a further description of the above technical solution:

[0007] The reset component includes a support plate, the support plate is fixedly connected to the outer wall of the air injection pipe, a fixing spring is fixedly connected to the top of the support plate, and the top of the fixing spring is fixedly connected to the bottom of the sliding sleeve.

[0008] As a further description of the above technical solution:

[0009] The outer wall of the sliding sleeve is fixedly connected with a protective sleeve, and the protective sleeve is sleeved on the outer wall of the support plate.

[0010] As a further description of the above technical solution:

[0011] A plurality of the closed grooves and rubber blocks are provided, and the plurality of closed grooves and rubber blocks are rotationally arranged in an array with the central axis of the air injection pipe as the rotation axis.

[0012] As a further description of the above technical solution:

[0013] The observation assembly includes a sliding plate, the sliding plate is piston-connected to the inner wall of the closed sleeve, the top end of the sliding plate is fixedly connected with an indicating column, and the indicating column penetrates and is slidably connected to the inner wall of the closing plate.

[0014] As a further description of the above technical solution:

[0015] The bottom end of the sliding plate is fixedly connected with a connecting sleeve, and the outer diameter of the connecting sleeve is the same as the inner diameter of the air injection pipe.

[0016] As a further description of the above technical solution:

[0017] The inner diameter of the connecting sleeve is larger than the outer diameter of the needle rod.

[0018] As a further description of the above technical solution:

[0019] The top end of the sliding plate is fixedly connected with a return spring, and the top end of the return spring is fixedly connected to the bottom end of the closing plate.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, by arranging the leak-proof mechanism, after the closed sleeve is installed, the sliding sleeve can be moved to sleeved on the outer wall of the closed sleeve, and at the same time, the sliding sleeve will drive the rubber block to insert into the closed groove, so that when in use, the connection position between the two can be prevented from being directly exposed, and at the same time, the rubber block can prevent the closed sleeve from rotating and loosening, and the overall device has a good leak-proof effect.

[0022] 2. In the utility model, by arranging the observation assembly, when air leakage occurs between the core body and the needle rod, the leaked gas will enter the inside of the closed sleeve, which will cause the air pressure below the sliding plate to increase. The excessive air pressure will cause the sliding plate to move upward, and the sliding plate will drive the indicating column to move upward and expose. Even if the operator does not open the closed sleeve, the operator can judge whether air leakage occurs inside the device by observing the exposed indicating column, and the overall device is more convenient to use. Description of the Drawings

[0023] Figure 1Schematic diagram of the three-dimensional structure of the overall device in the present utility model;

[0024] Figure 2 Schematic diagram of the sectional split of the three-dimensional structure of the overall device in the present utility model;

[0025] Figure 3 Schematic diagram of the sectional split of the three-dimensional structure of the observation component in the present utility model.

[0026] Legend description:

[0027] 1. Inflating tube; 2. Leak prevention mechanism; 21. Support plate; 22. Protective sleeve; 23. Fixed spring; 24. Sliding sleeve; 25. Rubber block; 26. Sealing groove; 27. Sealing plate; 28. Sealing sleeve; 29. Support sleeve; 3. Observation component; 31. Slide plate; 32. Connecting sleeve; 33. Indicator post; 34. Return spring; 4. Core body; 5. Needle rod. Specific implementation manner

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Refer to Figure 1 - Figure 3, an embodiment provided by the present utility model: an anti-leakage auxiliary mechanism for a valve stem, including an air injection pipe 1 for transmitting gas, the bottom end of the air injection pipe 1 is connected to the tire inner tube, and a core body 4 for allowing gas to pass through unidirectionally is installed on the inner wall of the air injection pipe 1. A needle rod 5 for controlling the core body 4 is provided at the top end of the core body 4. The needle rod 5 is an inherent component inside the core body 4. By pressing the needle rod 5, the internal channel of the core body 4 can be driven to open, so that deflation can be achieved. An anti-leakage mechanism 2 for enhancing the anti-leakage effect of the device is provided on the outer wall of the air injection pipe 1. The anti-leakage mechanism 2 includes an anti-loosening component and a reset component. The anti-loosening component includes a support sleeve 29 for supporting a sliding sleeve 24. The support sleeve 29 is fixedly connected to the outer wall of the air injection pipe 1. A sliding sleeve 24 for covering the connection position between the closing sleeve 28 and the air injection pipe 1 is slidably connected to the outer wall of the support sleeve 29. A closing sleeve 28 for supporting a closing plate 27 is threadedly connected to the outer wall of the air injection pipe 1. A closing plate 27 for closing the top opening of the closing sleeve 28 is fixedly connected to the top end of the closing sleeve 28. A rubber block 25 for restricting the rotation of the closing sleeve 28 is fixedly connected to the inner wall of the sliding sleeve 24. A closing groove 26 for accommodating the rubber block 25 is provided on the outer wall of the closing sleeve 28. The rubber block 25 is inserted into the inner wall of the closing groove 26. When the rubber block 25 is inserted into the inside of the closing groove 26, the closing sleeve 28 will be restricted from rotating. An observation component 3 for facilitating the operator to judge the airtight situation inside the device is provided on the inner wall of the closing sleeve 28.

[0030] Referring to Figure 1 - Figure 3 , the reset component includes a support plate 21 for supporting a fixing spring 23. The support plate 21 is fixedly connected to the outer wall of the air injection pipe 1. A fixing spring 23 for driving the sliding sleeve 24 to move upward for reset is fixedly connected to the top end of the support plate 21. The top end of the fixing spring 23 is fixedly connected to the bottom end of the sliding sleeve 24. The fixing spring 23 will always push the sliding sleeve 24 upward. A protective sleeve 22 for protecting the fixing spring 23 is fixedly connected to the outer wall of the sliding sleeve 24. The protective sleeve 22 is sleeved on the outer wall of the support plate 21. A closed space can be formed by the protective sleeve 22, the support sleeve 29, and the support plate 21, so as to reduce the influence of the external environment on the fixing spring 23. Multiple groups of the closing grooves 26 and the rubber blocks 25 are provided. The multiple groups of the closing grooves 26 and the rubber blocks 25 are rotationally arranged in an array with the center line of the air injection pipe 1 as the rotation axis. The cooperation of multiple groups of the rubber blocks 25 can achieve multi-point control, so that the stability is better during use.

[0031] Referring to Figure 1 - Figure 3, the observation component 3 includes a sliding plate 31 for driving the movement of the indicating column 33. The sliding plate 31 is piston-connected to the inner wall of the closed sleeve 28 and can move up and down along the inner wall of the closed sleeve 28. The top of the sliding plate 31 is fixedly connected with an indicating column 33 for prompting the operator that the device is leaking air. The indicating column 33 passes through and is slidably connected to the inner wall of the closing plate 27. The bottom of the sliding plate 31 is fixedly connected with a connecting sleeve 32 for protecting the needle rod 5. The outer diameter of the connecting sleeve 32 is the same as the inner diameter of the air injection pipe 1. The connecting sleeve 32 can be inserted into the air injection pipe 1 downward. The inner diameter of the connecting sleeve 32 is larger than the outer diameter of the needle rod 5. By using the connecting sleeve 32 to cover the needle rod 5, it is possible to prevent the needle rod 5 from accidentally contacting other components and causing air leakage. The top of the sliding plate 31 is fixedly connected with a return spring 34 for supporting the sliding plate 31. The top of the return spring 34 is fixedly connected to the bottom of the closing plate 27. The return spring 34 will always push the sliding plate 31 downward to prevent it from moving randomly.

[0032] Working principle: When it is necessary to seal the top opening of the air injection pipe 1, the sliding sleeve 24 can be first pressed downward to move it upward, so that the upper space of the air injection pipe 1 is exposed. Subsequently, the closed sleeve 28 can be installed on the outer wall of the air injection pipe 1 by rotation. At this time, the sliding sleeve 24 can be released, and the fixing spring 23 will push the sliding sleeve 24 to move it upward. The upward movement of the sliding sleeve 24 will drive the rubber block 25 to insert into the inside of the closed groove 26, so that the closed sleeve 28 can be fixed. At this time, the closed sleeve 28 will be fixed and cannot rotate, thus preventing air leakage caused by the rotation of the closed sleeve 28. At the same time, the sliding sleeve 24 will cover the connection between the air injection pipe 1 and the closed sleeve 28, so as to prevent the connection from rusting and being damaged.

[0033] When air leakage occurs in the core body 4, the gas will enter the middle position between the core body 4 and the sliding plate 31. This will cause the air pressure below the sliding plate 31 to increase. The increase in the air pressure below the sliding plate 31 will cause the sliding plate 31 to be forced to move upward. The upward movement of the sliding plate 31 will drive the indicating column 33 to move upward. The operator can judge whether air leakage occurs inside the core body 4 by observing the position of the indicating column 33, which is more convenient in use.

[0034] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An anti-leakage auxiliary mechanism for a valve stem, comprising an air injection pipe (1), characterized in that: A core body (4) is installed on the inner wall of the air injection pipe (1). A needle rod (5) is provided at the top end of the core body (4). A leak prevention mechanism (2) is provided on the outer wall of the air injection pipe (1). The leak prevention mechanism (2) includes a loosening prevention component and a reset component. The loosening prevention component includes a support sleeve (29). The support sleeve (29) is fixedly connected to the outer wall of the air injection pipe (1). A sliding sleeve (24) is slidably connected to the outer wall of the support sleeve (29). A sealing sleeve (28) is threadedly connected to the outer wall of the air injection pipe (1). A sealing plate (27) is fixedly connected to the top end of the sealing sleeve (28). A rubber block (25) is fixedly connected to the inner wall of the sliding sleeve (24). A sealing groove (26) is provided on the outer wall of the sealing sleeve (28). The rubber block (25) is inserted into the inner wall of the sealing groove (26). An observation component (3) is provided on the inner wall of the sealing sleeve (28).

2. The leak-proof auxiliary mechanism for a valve stem according to claim 1, wherein: The reset component includes a support plate (21). The support plate (21) is fixedly connected to the outer wall of the air injection pipe (1). A fixing spring (23) is fixedly connected to the top end of the support plate (21). The top end of the fixing spring (23) is fixedly connected to the bottom end of the sliding sleeve (24).

3. The leak prevention auxiliary mechanism for a valve nozzle according to claim 2, characterized in that: A protective sleeve (22) is fixedly connected to the outer wall of the sliding sleeve (24). The protective sleeve (22) is sleeved on the outer wall of the support plate (21).

4. An anti-leakage auxiliary mechanism for a valve nozzle according to claim 1, characterized in that: A plurality of the sealing grooves (26) and rubber blocks (25) are provided. The plurality of sealing grooves (26) and rubber blocks (25) are rotationally arranged in an array with the central axis of the air injection pipe (1) as the rotation axis.

5. The leak-proof auxiliary mechanism for a valve stem according to claim 1, characterized in that: The observation component (3) includes a sliding plate (31). The sliding plate (31) is piston-connected to the inner wall of the sealing sleeve (28). An indicating column (33) is fixedly connected to the top end of the sliding plate (31). The indicating column (33) penetrates and is slidably connected to the inner wall of the sealing plate (27).

6. The leak-proof auxiliary mechanism for a valve nozzle according to claim 5, characterized in that: A connecting sleeve (32) is fixedly connected to the bottom end of the sliding plate (31). The outer diameter of the connecting sleeve (32) is the same as the inner diameter of the air injection pipe (1).

7. An anti-leakage auxiliary mechanism for a valve nozzle according to claim 6, characterized in that: The inner diameter of the connecting sleeve (32) is larger than the outer diameter of the needle rod (5).

8. An anti-leakage auxiliary mechanism for a valve stem according to claim 6, characterized in that: A reset spring (34) is fixedly connected to the top end of the sliding plate (31). The top end of the reset spring (34) is fixedly connected to the bottom end of the sealing plate (27).

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