High-pressure-resistant inflating valve

Abstract

The utility model relates to the field of automobile parts, and discloses a high-pressure-resistant inflating valve which comprises a valve core assembly, a connecting seat, a dustproof cap and a vertically-through inflating valve body, the connecting seat is arranged on the inflating valve body in a sleeved mode and used for being connected with a hub hole of a tire, and the valve core assembly is contained in the inflating valve body and is in threaded connection with the inflating valve body. The dustproof cap is in threaded connection with the upper end of the air tap body. According to the high-pressure-resistant inflating valve disclosed by the utility model, the valve core assembly, the connecting seat, the dustproof cap and the inflating valve main body are matched with one another, so that when a tire is inflated, an external inflating device downwards presses the valve core assembly, and a channel is opened at the bottom of the valve core assembly, so that gas enters the tire; when the air pressure in the tire reaches a threshold value, the valve core assembly resets, the channel is closed, air is prevented from flowing in continuously, the structure is stable and reliable, the service life is long, the cost is low, and the high-pressure-resistant effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile accessories, in particular to a high-pressure-resistant valve core. BACKGROUND

[0002] The valve core is a kind of independent valve body device, when opening, let gas into the space of tubeless tire or inner tube, then automatically close and seal and save gas to produce gas pressure, to prevent gas from escaping tire or inner tube. Except solid tire, other tires or inner tubes that must be inflated all need to use this device to inflate. At present, the valve core used by many vehicles on market is generally short in service life, complicated in installation process, high in cost and poor in high-pressure resistance. SUMMARY

[0003] To solve at least one aspect in the above problem, the utility model provides a high-pressure-resistant valve core, including valve core assembly, connecting seat, dustproof cap and upper and lower through gas nozzle main part, the connecting seat is sleeved on the gas nozzle main part, the connecting seat is used for connecting the hub hole of vehicle tire, the valve core assembly is contained in the gas nozzle main part and is connected with the gas nozzle main part screw thread, the dustproof cap and the upper end of the gas nozzle main part are connected screw thread.

[0004] Optionally, the valve core assembly includes first connecting piece, second connecting piece, gas nozzle needle and spring, the first connecting piece and the second connecting piece are rotatably connected and form upper and lower through accommodating cavity, the gas nozzle needle is slidably arranged in the accommodating cavity, and the spring is sleeved on the gas nozzle needle and contained in the accommodating cavity.

[0005] Optionally, the bottom of the gas nozzle needle is fixedly connected with a limiting seat, a first sealing ring is arranged on the limiting seat, and the first sealing ring is adapted to abut against the bottom of the second connecting piece.

[0006] Optionally, a pressing block is protruded on the gas nozzle needle, the upper and lower ends of the spring abut against the pressing block and the inner wall of the second connecting piece respectively, and the pressing block is contained in the accommodating cavity.

[0007] Optionally, the first connecting piece and the inner wall of the gas nozzle main part are connected screw thread, a limiting surface is arranged on the inner wall of the gas nozzle main part, a rubber ring is arranged on the outer wall of the second connecting piece, and the rubber ring abuts against the limiting surface.

[0008] Optionally, a rotating part is protruded on the upper end of the first connecting piece, the rotating part is convenient for rotating and installing the first connecting piece, a through hole is arranged on the rotating part, and the gas nozzle needle moves up and down and is arranged in the through hole.

[0009] Optionally, a second sealing ring is arranged in the dustproof cap, and the upper end of the gas nozzle main part abuts against the second sealing ring.

[0010] Optionally, a limiting part is protruded on the outer wall of the connecting seat, and the limiting part is used for limiting the hub hole of the tire.

[0011] Optionally, an arc-shaped guide surface is concaved inwardly on the bottom outer wall of the air valve body, and the arc-shaped guide surface is adapted to abut against the hub hole of the tire, so as to improve the sealing performance.

[0012] Optionally, a limiting block is protruded on the outer wall of the air valve body, and a limiting groove is concaved on the inner wall of the connecting seat, and the limiting block is limited in the limiting groove, so as to fix the air valve body and the connecting seat.

[0013] Compared with the prior art, the high-pressure-resistant air valve in the utility model is matched by the air valve core assembly, the connecting seat, the dustproof cap and the air valve body, when the tire is inflated, the external inflating device presses downwardly the air valve core assembly, the bottom of the air valve core assembly opens the channel to let the gas into the tire, when the air pressure in the tire reaches the threshold value, the air valve core assembly resets and closes the channel to prevent the gas from continuously flowing in, the structure is stable and reliable, the service life is long, the cost is low and the high-pressure-resistant effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structure diagram of the high-pressure-resistant air valve of the utility model embodiment;

[0015] Figure 2 It is a sectional view of the high-pressure-resistant air valve of the utility model embodiment;

[0016] Figure 3 It is an explosion diagram of the high-pressure-resistant air valve of the utility model embodiment.

[0017] BRIEF DESCRIPTION OF DRAWINGS

[0018] 1, air valve body; 11, limiting surface; 12, arc-shaped guide surface; 13, limiting block; 2, connecting seat; 21, limiting part; 22, limiting groove; 3, first connecting piece; 31, rotating part; 311, through hole; 4, second connecting piece; 41, rubber ring; 5, air valve needle; 51, limiting seat; 511, first sealing ring; 52, pressing block; 6, spring; 7, dustproof cap; 71, second sealing ring. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below with reference to the drawings.

[0020] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "upper", "lower" and the like is based on the orientation or position relationship in the normal use of the product.

[0021] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0022] This utility model embodiment provides a high-pressure resistant valve, combined with Figure 1 , Figure 2 , Figure 3 As shown, it includes a valve core assembly, a connecting seat 2, a dust cap 7, and a valve body 1 that runs vertically through the valve body. The connecting seat 2 is sleeved on the valve body 1 and is used to connect to the wheel hub hole of the tire. The valve core assembly is housed in the valve body 1 and is threadedly connected to the valve body 1. The dust cap 7 is threadedly connected to the upper end of the valve body 1.

[0023] like Figure 1 and 2 As shown, in this embodiment, the connecting seat 2 is made of rubber, and the air nozzle body 1 and the connecting seat 2 are fused together at high temperature through a vulcanization process.

[0024] The high-pressure resistant valve of this invention is designed by combining a valve core assembly, a connecting seat 2, a dust cap 7, and a valve body 1. When the tire is inflated, the external inflation device presses down on the valve core assembly, opening the channel at the bottom of the valve core assembly to allow gas to enter the tire. When the air pressure inside the tire reaches the threshold, the valve core assembly resets, closing the channel to prevent further gas inflow. The valve has a stable and reliable structure, long service life, low cost, and good high-pressure resistance.

[0025] like Figure 2 As shown, optionally, the valve core assembly includes a first connector 3, a second connector 4, a valve needle 5, and a spring 6. The first connector 3 and the second connector 4 are rotatably connected to form a through-cavity. The valve needle 5 is slidably inserted into the cavity, and the spring 6 is sleeved on the valve needle 5 and accommodated in the cavity.

[0026] Optionally, the bottom of the air nozzle needle 5 is fixedly connected to a limiting seat 51, and the limiting seat 51 is provided with a first sealing ring 511, which is adapted to abut against the bottom of the second connecting member 4.

[0027] like Figure 2 and 3 As shown, in this embodiment, when the tire is inflated, the valve needle 5 moves downward under the action of the external inflation device, and the valve needle 5 drives the limiting seat 51 to move downward together. At this time, the bottom of the limiting seat 51 and the second connecting member 4 forms a channel for gas to flow. The gas flows downward through the accommodating cavity and the channel until it enters the tire.

[0028] When the air pressure in the tire reaches the threshold value, the valve needle 5 is returned to the original position under the action of the spring 6, at this time the limiting seat 51 moves up with the valve needle 5, until the first sealing ring 511 and the bottom of the second connecting piece 4 are sealed and abutted, to close the channel and prevent gas from continuing to flow in, to avoid the tire from being overinflated and burst.

[0029] Optionally, a pressing block 52 is protruded on the valve needle 5, the upper and lower ends of the spring 6 abut the pressing block 52 and the inner wall of the second connecting piece 4 respectively, and the pressing block 52 is accommodated in the accommodating cavity.

[0030] As shown in Figure 2 and 3 , in the embodiment, when the valve needle 5 moves down, the pressing block 52 presses the spring 6 to accumulate the return force of the spring 6, when the air pressure is balanced, the spring 6 drives the pressing block 52 to move up, so that the valve needle 5 is in place. At the same time, the pressing block 52 abuts against the top wall of the accommodating cavity to limit the distance of the rebound of the valve needle 5.

[0031] Optionally, the inner wall of the valve body 1 is threadedly connected with the first connecting piece 3, the inner wall of the valve body 1 is provided with a limiting surface 11, and the outer wall of the second connecting piece 4 is provided with a rubber ring 41, and the rubber ring 41 abuts against the limiting surface 11.

[0032] As shown in Figure 2 and 3 , in the embodiment, the limiting surface 11 is inclined inward from top to bottom, the rubber ring 41 abuts against the limiting surface 11, and the friction between the rubber ring 41 and the valve body 1 is increased, so that the position of the second connecting piece 4 is more stable.

[0033] Optionally, the upper end of the first connecting piece 3 is provided with a rotating part 31, the rotating part 31 facilitates the rotation of the first connecting piece 3, the rotating part 31 is provided with a through hole 311, and the valve needle 5 moves up and down and is arranged in the through hole 311.

[0034] As shown in Figure 3 , in the embodiment, the user can rotate the rotating part 31 with a tool, so as to threadedly connect the first connecting piece 3 and the valve body 1.

[0035] Optionally, the dustproof cap 7 is internally provided with a second sealing ring 71, and the upper end of the valve body 1 abuts against the second sealing ring 71.

[0036] As shown in Figure 2 , in the embodiment, when the dustproof cap 7 and the valve body 1 are threadedly connected, the second sealing ring 71 plays a buffering role, so as to prevent the upper end of the valve body 1 and the inner top wall of the dustproof cap 7 from being damaged due to hard friction.

[0037] As Figure 2 shown, optionally, a limiting part 21 is protruded on the outer wall of the connecting seat 2, which is used to limit the hub hole of the connected tire.

[0038] As Figure 3 shown, optionally, an arc-shaped guiding surface 12 is formed by concave on the bottom outer wall of the air valve body 1, which is suitable to abut the hub hole of the tire, so as to improve the sealing performance.

[0039] As Figure 2 shown, optionally, a limiting block 13 is protruded on the outer wall of the air valve body 1, and a limiting groove 22 is concave on the inner wall of the connecting seat 2, the limiting block 13 is limited in the limiting groove 22, so as to fix the air valve body 1 and the connecting seat 2.

[0040] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited to this. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications shall fall within the protection scope of the present disclosure.

Claims

1. A high pressure resistant valve nozzle characterized by, The valve core assembly, the connecting seat (2), the dustproof cap (7) and the air nozzle main body (1) are provided, the connecting seat (2) is sleeved on the air nozzle main body (1), the connecting seat (2) is used for connecting the hub hole of the tire, the valve core assembly is contained in the air nozzle main body (1) and is threadedly connected with the air nozzle main body (1), and the dustproof cap (7) and the upper end of the air nozzle main body (1) are threadedly connected.

2. The high pressure resistant valve nozzle of claim 1, wherein, The valve core assembly includes a first connecting piece (3), a second connecting piece (4), an air nozzle needle (5) and a spring (6), the first connecting piece (3) and the second connecting piece (4) are rotatably connected and form an upper and lower through accommodating cavity, the air nozzle needle (5) is slidably arranged in the accommodating cavity, and the spring (6) is sleeved on the air nozzle needle (5) and contained in the accommodating cavity.

3. The high pressure resistant valve nozzle of claim 2, wherein, The bottom of the air nozzle needle (5) is fixedly connected with a limiting seat (51), a first sealing ring (511) is arranged on the limiting seat (51), and the first sealing ring (511) is adapted to abut against the bottom of the second connecting piece (4).

4. The high pressure resistant valve nozzle of claim 2, wherein, A pressing block (52) is protruded on the air nozzle needle (5), the upper and lower ends of the spring (6) abut against the pressing block (52) and the inner wall of the second connecting piece (4) respectively, and the pressing block (52) is contained in the accommodating cavity.

5. The high pressure resistant valve nozzle of claim 2, wherein, The first connecting piece (3) and the inner wall of the air nozzle main body (1) are threadedly connected, a limiting surface (11) is arranged on the inner wall of the air nozzle main body (1), a rubber ring (41) is arranged on the outer wall of the second connecting piece (4), and the rubber ring (41) abuts against the limiting surface (11).

6. The high pressure resistant valve nozzle of claim 2, wherein, The upper end of the first connecting piece (3) is provided with a rotating portion (31), the rotating portion (31) facilitates the rotation of the first connecting piece (3), the rotating portion (31) is provided with a through hole (311), and the air nozzle needle (5) moves up and down and is arranged in the through hole (311).

7. The high pressure resistant valve nozzle of claim 1, wherein A second sealing ring (71) is arranged in the dustproof cap (7), and the upper end of the air nozzle main body (1) abuts against the second sealing ring (71).

8. The high pressure resistant valve nozzle of claim 1, wherein, A limiting portion (21) is protruded on the outer wall of the connecting seat (2), and the limiting portion (21) is used for limiting the hub hole of the tire.

9. The high pressure resistant valve nozzle of claim 1, wherein, An arc-shaped guide surface (12) is recessed inward on the bottom outer wall of the air nozzle main body (1), the arc-shaped guide surface (12) is adapted to abut against the hub hole of the tire, so that the sealing performance is improved.

10. The high pressure resistant valve nozzle of claim 1, wherein, A limiting block (13) is protruded on the outer wall of the air nozzle main body (1), a limiting groove (22) is recessed on the inner wall of the connecting seat (2), the limiting block (13) is limited in the limiting groove (22), so that the air nozzle main body (1) and the connecting seat (2) are fixed.

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