Air leakage structure for preventing tire burst of valve core

Abstract

The utility model discloses a valve core run-flat air release structure which comprises a pressure release assembly, the pressure release assembly comprises an air tap, a valve core body is detachably installed on the inner wall of the air tap, a cylindrical opening is formed in the center of the valve core body, a piston rod is movably arranged at the position of the opening, and a sealing plug is installed at the bottom end of the piston rod. A mounting plate is arranged at one end of the piston rod, a spring is mounted at the bottom of the mounting plate, the other end of the spring is fixed to the valve core body, a driving box is mounted on the outer wall of one side of the air tap, one end of the driving box is connected with a rotating shaft, and a cam is mounted at one end of the rotating shaft; the position of the cam is matched with the piston rod, a monitoring assembly used for monitoring tire pressure is arranged on one side of the air tap and comprises a fixing support, the fixing support is fixed to the inner wall of one side of the air tap, a pressure sensor is installed through the fixing support, and air leakage can be automatically controlled according to the tire pressure condition.

Description

Technical Field

[0001] The utility model relates to the technical field of inflation and deflation, in particular to a valve core explosion-proof tire deflation structure. Background Art

[0002] The valve core is mainly used to inflate and deflate tires and prevent tire leaks. The use of pneumatic tire valve cores has a history of a hundred years, and its practicality and reliability have long been recognized by the world. Although it has the functions of sealing, inflating, and deflation, it cannot monitor the pressure inside the tire and deflate. When the ambient temperature is too high or for a long time, the tire pressure will rise rapidly, resulting in the risk of tire blowout.

[0003] After searching, the Chinese patent application No. 200520047668.8 discloses a high-pressure explosion-proof deflated valve core, including a valve core, an exhaust device is arranged in the core barrel of the valve core, the exhaust device is composed of a tube body, the tube body passes through the base of the valve core and is fixedly connected to the base, a baffle is fixedly arranged in the tube body, a conical vent is arranged in the baffle, an exhaust hole is arranged in the side wall of the tube body above the conical vent, a steel ball is arranged in the tube body and on the upper side of the baffle, the steel ball is located on the conical vent, an adjusting screw is arranged in the upper end of the tube body through a thread, and a deflated spring is arranged between the adjusting screw and the steel ball. The high-pressure explosion-proof deflated valve core in the above patent has the following shortcomings: the device only deflates by the spring and the steel ball, and the failure rate is high, and it cannot be deflated autonomously according to the needs. After a long time of use, it may fail to deflate normally when the tire pressure exceeds a certain level or deflate before the specified tire pressure, resulting in insufficient tire pressure. The inability to manually control it will lead to certain safety hazards. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a valve core explosion-proof tire deflation structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A valve core explosion-proof tire deflation structure comprises a pressure relief component, the pressure relief component comprises an air nozzle, the inner wall of the air nozzle is detachably mounted with a valve core body, a cylindrical opening is provided in the center of the valve core body, a piston rod is movably arranged through the opening, a sealing plug is installed at the bottom end of the piston rod, a groove is provided at the bottom of the valve core body, the sealing plug is matched with the groove at the bottom of the valve core body, a mounting plate is provided at one end of the piston rod, a spring is installed at the bottom of the mounting plate, the other end of the spring is fixed to the valve core body, a driving box is installed on the outer wall of one side of the air nozzle, one end of the driving box is connected to a rotating shaft, a cam is installed at one end of the rotating shaft, the position of the cam is matched with the piston rod, and a monitoring component for monitoring tire pressure is provided on one side of the air nozzle.

[0007] As a further solution of the utility model: the monitoring component includes a fixed bracket, the fixed bracket is fixed to the inner wall of one side of the air nozzle, and a pressure sensor is installed through the fixed bracket.

[0008] As a further solution of the utility model: a limiting frame is arranged on the top of the valve core body, and the limiting frame is matched with the piston rod.

[0009] As a further solution of the utility model: a gasket is arranged on one side of the sealing plug, the gasket is made of rubber material, and the gasket is adapted to the sealing plug.

[0010] As a further solution of the utility model: a display panel is arranged on one side of the driving box, and a control switch is connected to one side of the display panel.

[0011] As a further solution of the utility model: a warning light is connected to one side of the drive box.

[0012] As a further solution of the utility model: a solar charging panel is connected to one side of the drive box.

[0013] As a further solution of the utility model: a thread is arranged at one end of the gas nozzle, and a sealing cap is arranged at one side of the gas nozzle, and the sealing cap is matched with the gas nozzle and the thread arranged thereon.

[0014] The beneficial effects of the utility model are:

[0015] When the tire pressure is too high, the cam is controlled to rotate so that the cam protrusion contacts the piston rod, thereby controlling the piston rod to overcome the elastic force of the spring and move downward, allowing the sealing plug to separate from the groove provided at the bottom of the valve core body and leak out of the opening in the center of the valve core body for deflation. The opening and closing of the deflation can be controlled automatically as needed, and the deflation time can be adjusted to avoid the problem of high failure rate of pressure relief controlled by pressure alone, which may easily lead to safety hazards. It can prevent the situation of tire blowout during driving due to excessive tire pressure, thereby reducing the occurrence of safety hazards.

[0016] The movement track of the piston rod can be restricted by setting the limit frame, thereby preventing the piston rod from tilting or deviating during movement.

[0017] The rubber gasket is used to fill the gap when the sealing plug closes the valve core body, thereby effectively avoiding air leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a valve core explosion-proof tire deflation structure from a main perspective proposed by the utility model;

[0019] Figure 2 A schematic diagram of the structure of a monitoring part of a valve core explosion-proof tire deflation structure proposed by the utility model;

[0020] Figure 3 It is a structural schematic diagram of the deflation part of a valve core explosion-proof tire deflation structure proposed by the utility model;

[0021] Figure 4 The utility model discloses a structural schematic diagram of a sealing part of a valve core explosion-proof tire deflation structure.

[0022] In the figure: 1-air nozzle, 2-drive box, 3-solar charging panel, 4-warning light, 5-sealing cap, 6-display panel, 7-control switch, 8-fixed bracket, 9-pressure sensor, 10-rotating shaft, 11-cam, 12-piston rod, 13-mounting plate, 14-spring, 15-sealing plug, 16-gasket, 17-valve core body, 18-limiting frame. DETAILED DESCRIPTION

[0023] The technical solution of the utility model is further described in detail below in conjunction with specific implementation methods.

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. Example 1

[0025] A valve core explosion-proof tire deflation structure, such as Figure 1-4 As shown, it includes a pressure relief component, which includes an air nozzle 1, a valve core body 17 is detachably mounted on the inner wall of the air nozzle 1, a cylindrical opening is opened in the center of the valve core body 17, a piston rod 12 is movably arranged through the opening, a sealing plug 15 is installed at the bottom end of the piston rod 12, a groove is arranged at the bottom of the valve core body 17, the sealing plug 15 is matched with the groove at the bottom of the valve core body 17, a mounting plate 13 is fixedly arranged at one end of the piston rod 12 by welding, a spring 14 is installed at the bottom of the mounting plate 13, and the other end of the spring 14 is fixed to the valve core body 17, a driving box 2 is installed on the outer wall of one side of the air nozzle 1, a rotating shaft 10 is connected to one end of the driving box 2, a cam 11 is installed at one end of the rotating shaft 10, and the position of the cam 11 is matched with the piston rod 12, and a monitoring component for monitoring tire pressure is arranged on one side of the air nozzle 1;

[0026] When in use, a driving motor and a battery are provided in the driving box 2, and the driving motor can control the rotation of the rotating shaft 10 and the cam 11. When inflation is required, the air pump is connected to drive the cam 11 to rotate, and the convex part of the cam 11 is contacted with the piston rod 12 by rotation, so that the piston rod 12 is controlled to move downward to overcome the elastic force of the spring 14, so that the sealing plug 15 is separated from the bottom of the valve core body 17. A groove is provided, and the opening in the center of the valve core body 17 leaking out is inflated by the air pump to allow gas to enter the tire for charging. After completion, the cam 11 rotates to make the convex part leave the piston rod 12, and the sealing plug 15 can be driven by the elastic force of the spring 14 to re-enter the groove to block the groove of the valve core body 17 for sealing, so as to avoid leakage. When the tire pressure is monitored to rise rapidly beyond the normal value, the sealing plug 15 is controlled by the rotation of the cam 11 to open the opening of the valve core body 17 leaking out to exhaust air, so that the tire pressure drops to a normal value, so as to avoid the situation that the tire pressure is too high and a tire blowout occurs during driving, and the occurrence of safety hazards can be reduced.

[0027] The monitoring assembly includes a fixed bracket 8, which is fixed to the inner wall of one side of the gas nozzle 1 by welding, and a pressure sensor 9 is installed through the fixed bracket 8;

[0028] When in use, the device can be connected to the vehicle, and the device can be controlled through the vehicle's instrument and central control. The tire pressure can be monitored in real time through the pressure sensor 9. The monitored tire pressure value can be checked through the vehicle, so as to timely find abnormal tire pressure and deflate or inflate it, thereby preventing tire blowout.

[0029] In order to prevent the piston rod 12 from deflecting when moving, as Figure 3 As shown, a limit frame 18 is provided on the top of the valve core body 17, and the limit frame 18 is adapted to the piston rod 12;

[0030] When in use, the limit frame 18 can limit the movement trajectory of the piston rod 12, thereby preventing it from tilting or deviating during movement;

[0031] In order to increase the sealing performance, Figure 3 , 4 As shown, a gasket 16 is provided on one side of the sealing plug 15, and the gasket 16 is made of rubber material, and the gasket 16 is adapted to the sealing plug 15;

[0032] When in use, the rubber gasket 16 fills the gap when the sealing plug 15 closes the valve core body 17, thereby effectively avoiding air leakage;

[0033] To display tire pressure values, such as Figure 1 As shown, a display panel 6 is provided on one side of the driving box 2, and a control switch 7 is connected to one side of the display panel 6;

[0034] When in use, the display panel 6 is connected to the pressure sensor 9. When outside the vehicle, the control switch 7 can be pressed to light up the display panel 6 to display the current tire pressure value, thereby facilitating observation of the tire pressure;

[0035] To warn you when tire pressure is low, Figure 1 As shown, a warning light 4 is connected to one side of the drive box 2;

[0036] When in use, the warning light 4 is connected to the pressure sensor 9. When the tire pressure is low, the warning light 4 can flash after the vehicle is unlocked, so that it is easy to find when observing around the vehicle, and the situation of insufficient tire pressure can be discovered in time for inspection;

[0037] To increase battery life, Figure 1 As shown, a solar charging panel 3 is connected to one side of the drive box 2;

[0038] During use, when the vehicle stops, the solar charging panel 3 connected to one side of the drive box 2 can receive light for storage, thereby replenishing energy for the battery in the drive box 2 to increase battery life. Example 2

[0039] To prevent foreign matter from entering, refer to Figure 1 , 2 , a valve core explosion-proof tire deflation structure, this embodiment makes the following improvements compared with embodiment 1, one end of the air nozzle 1 is provided with a thread, and one side of the air nozzle 1 is provided with a sealing cap 5, and the sealing cap 5 is adapted to the air nozzle 1 and the thread provided thereon;

[0040] During use, when the vehicle is parked for a long time, the tire pressure needs to be increased to protect the tire. After the tire pressure is increased, the sealing cap 5 is tightened and installed on the air nozzle 1 through the thread of the air nozzle 1, so as to seal the air nozzle 1 to prevent foreign objects from entering and prevent air leakage. When driving is required, the sealing cap 5 can be removed for normal deflation.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A valve core explosion-proof tire deflation structure, comprising a pressure relief component, characterized in that: The pressure relief assembly comprises an air nozzle (1), wherein a valve core body (17) is detachably mounted on the inner wall of the air nozzle (1), a cylindrical opening is provided in the center of the valve core body (17), a piston rod (12) is movably mounted through the opening, a sealing plug (15) is mounted on the bottom end of the piston rod (12), a groove is provided at the bottom of the valve core body (17), the sealing plug (15) is matched with the groove at the bottom of the valve core body (17), a mounting plate (13) is provided at one end of the piston rod (12), a spring (14) is mounted at the bottom of the mounting plate (13), the other end of the spring (14) is fixed to the valve core body (17), a drive box (2) is mounted on the outer wall of one side of the air nozzle (1), one end of the drive box (2) is connected to a rotating shaft (10), one end of the rotating shaft (10) is mounted with a cam (11), the position of the cam (11) is matched with the piston rod (12), and a monitoring assembly for monitoring tire pressure is provided on one side of the air nozzle (1).

2. The valve core explosion-proof tire deflation structure according to claim 1, characterized in that: The monitoring component comprises a fixed bracket (8), the fixed bracket (8) being fixed to an inner wall of one side of the gas nozzle (1), and a pressure sensor (9) being mounted via the fixed bracket (8).

3. The valve core explosion-proof tire deflation structure according to claim 1, characterized in that: A limiting frame (18) is arranged on the top of the valve core body (17), and the limiting frame (18) is adapted to the piston rod (12).

4. The valve core explosion-proof tire deflation structure according to claim 1, characterized in that: A gasket (16) is provided on one side of the sealing plug (15); the gasket (16) is made of rubber material and is compatible with the sealing plug (15).

5. The valve core explosion-proof tire deflation structure according to claim 1, characterized in that: A display panel (6) is provided on one side of the drive box (2), and a control switch (7) is connected to one side of the display panel (6).

6. The valve core explosion-proof tire deflation structure according to claim 1, characterized in that: A warning light (4) is connected to one side of the drive box (2).

7. The valve core explosion-proof tire deflation structure according to claim 1, characterized in that: One side of the drive box (2) is connected to a solar charging panel (3).

8. The valve core explosion-proof tire deflation structure according to claim 1, characterized in that: A thread is provided at one end of the gas nozzle (1), and a sealing cap (5) is provided at one side of the gas nozzle (1), wherein the sealing cap (5) is compatible with the gas nozzle (1) and the thread provided thereon.

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