Adjustable tire deflation valve

Abstract

The utility model provides an adjustable tire deflation valve which comprises a valve body and a shell sleeved on the end portion of the valve body, an adjusting seat is installed in the shell, the adjusting seat is connected in the valve body in a lifting mode, a movable cavity is arranged in the valve body, a piston rod is arranged in the center of the adjusting seat in a penetrating mode, and a piston on the end portion of the piston rod is arranged in the movable cavity in a sliding mode. The piston rod is sleeved with a reset spring, the upper end of the reset spring abuts against the adjusting base, and an air outlet is formed in the side, located at the upper end of the piston, of the movable cavity. According to the adjustable tire deflation valve provided by the utility model, the scales are arranged on the surface of the valve body, the valve body is matched with the shell to display the current tire pressure required by deflation, namely, the air pressure of a deflated tire is adjusted, and the valve body is lowered by rotating the shell to compress a spring in the valve body, so that the constant tire pressure of the deflation valve can be increased; therefore, the effect of accurately controlling the tire pressure after deflation is achieved, and the safety is improved when the tire is used.

Description

Technical Field

[0001] The utility model relates to the technical field of tire deflation valves, in particular to an adjustable tire deflation valve. Background Art

[0002] Inflation and deflation valves are widely used in various types of wheeled vehicles to inflate and deflate tires and ensure the pressure-maintaining performance of tires. Patent application number 202010927385.1 discloses a vehicle tire inflation and deflation valve. The inflation and deflation valve comprises an inflation nozzle (1), a valve core (2), a screw plug (3), a nut (4), a limiting plate (5), a pad (9), a spring (10) and a rubber seat (12); the valve core (2) is fixed in a central hole at one end of the inflation nozzle (1), a spherical plug at the other end of the inflation nozzle is slidably installed in a conical central hole at one end of the rubber seat (12), the central blind hole of the valve nozzle (1) is an axial air passage, a radial air passage is arranged on the valve nozzle (1), the axial air passage is connected to the radial air passage, the radial air passage is connected to the inner cavity of the tire through the built-in air passage of the wheel rim, the nut (4) is mounted and fixed on the screw plug (3), the other end of the screw plug (3) is fixedly connected to the nut, and the pad (9) and the spring (10) are sequentially mounted on the middle part of the outer periphery of the valve nozzle (1). However, the deflation valve is directly deflated after being connected to the valve core, and the air pressure cannot be adjusted to achieve accurate tire pressure control, which affects the subsequent use of the tire. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] The problem to be solved by the utility model is to provide an adjustable tire deflation valve to overcome the defects in the prior art that the deflation valve cannot adjust the air pressure and the pressure adjustment is inaccurate.

[0005] (II) Technical solution

[0006] In order to solve the technical problem, the utility model provides an adjustable tire deflation valve, comprising a valve body and a shell sleeved on the end of the valve body, an adjusting seat is installed in the shell, the adjusting seat can be connected to the valve body in a liftable manner, an active cavity is provided in the valve body, a piston rod is provided through the center of the adjusting seat, a piston at the end of the piston rod is slidably arranged in the active cavity, a return spring is sleeved on the piston rod, the upper end of the return spring abuts on the adjusting seat, and an air outlet is provided on one side of the active cavity located at the upper end of the piston; the bottom of the valve body is connected to the tire ventilation, the outer surface of the valve body is symmetrically provided with scales, the lower end surface of the shell is used in conjunction with the scale, the scale indicated by the lower end surface of the shell is the critical point at which the tire pressure can push out the piston, so the air pressure in the tire can be put to the current adjustment scale, the gas pushes the piston up to the air outlet, and deflation can be carried out at this time, the shell and the adjusting seat descend to compress the return spring to increase the air pressure required for deflation.

[0007] In some embodiments, the outer surface of the valve body is symmetrically provided with scales, the lower end surface of the shell is used in conjunction with the scales, the outer wall of the adjustment seat is provided with a first external thread, the inner wall of the valve body is provided with a first internal thread that cooperates with the first external thread, and an avoidance groove is provided between the shell and the adjustment seat, and the end of the valve body can enter the avoidance groove.

[0008] In some embodiments, a one-way valve is installed in the active cavity, the upper end surface of the one-way valve is provided with a conical sealing hole, the lower end of the sealing hole passes through the one-way valve, the lower end surface of the piston is a conical surface, the return spring pushes the piston against the sealing hole, and a plurality of ventilation holes are provided at the bottom of the valve body, and the ventilation holes are connected to the sealing holes.

[0009] In some embodiments, a second internal thread is further provided at the bottom of the valve body, the second internal thread is connected to the valve core of the external wheel, and a first sealing ring is installed at the upper end of the valve body located at the second internal thread.

[0010] In some embodiments, a second sealing ring is installed at the connection between the upper part of the valve body and the shell, a positioning groove is provided at the bottom of the adjustment seat, the upper end of the return spring is placed in the positioning groove, and the lower end abuts against the piston.

[0011] In some embodiments, the upper outer wall of the shell is provided with a first anti-slip portion, the top end of the piston rod is threadedly connected with a terminal, and the outer wall of the terminal is provided with a second anti-slip portion.

[0012] (III) Beneficial effects

[0013] The utility model provides an adjustable tire deflation valve, the surface of the valve body is provided with a scale, which cooperates with the shell to display the tire pressure required for the current deflation, that is, to adjust the tire pressure after deflation, the shell is rotated to make it descend and then the spring inside the valve body is compressed, so that the constant tire pressure of the deflation valve can be increased, thereby achieving the effect of accurately controlling the tire pressure after deflation, so that the safety of the tire is improved when it is used. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a three-dimensional diagram of an adjustable tire deflation valve of the utility model;

[0016] Figure 2It is a cross-sectional view of an adjustable tire deflation valve of the utility model;

[0017] Figure 3 This is a cross-sectional view of an adjustable tire deflation valve after adjustment of the utility model;

[0018] Figure 4 This is a cross-sectional view of an adjustable tire deflation valve of the utility model without the piston;

[0019] Figure 5 This is a three-dimensional diagram of a piston rod of an adjustable tire deflation valve of the utility model;

[0020] Figure 6 It is a three-dimensional diagram of a one-way valve of an adjustable tire deflation valve of the utility model;

[0021] Figure 7 This is a three-dimensional diagram of the bottom of a valve body of an adjustable tire deflation valve of the utility model;

[0022] Figure 8 The utility model is a three-dimensional diagram of the bottom of a shell of an adjustable tire deflation valve.

[0023] The names of the components corresponding to the various figure marks in the figure are: 1. valve body; 101. first internal thread; 102. scale; 2. shell; 3. adjustment seat; 301. first external thread; 4. movable chamber; 5. piston rod; 6. piston; 7. return spring; 8. air outlet; 9. avoidance groove; 10. one-way valve; 11. sealing hole; 12. ventilation valve; 13. second internal thread; 14. first sealing ring; 15. second sealing ring; 16. positioning groove; 17. first anti-slip portion; 18. terminal; 19. second anti-slip portion. DETAILED DESCRIPTION

[0024] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0025] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0026] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0027] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0028] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0029] See also Figures 1 to 8 The utility model provides an adjustable tire deflation valve, including a valve body 1 and a shell 2 sleeved on the end of the valve body 1, an adjusting seat 3 is installed in the shell 2, which can be installed by threaded connection for easy disassembly, or can be directly fixedly connected, the adjusting seat 3 can be connected to the valve body 1 in a lifting manner, and at the same time drive the shell 2 to lift, an active cavity 4 is provided in the valve body 1, a piston rod 5 is provided through the center of the adjusting seat 3, a piston 6 at the end of the piston rod 5 is slidably arranged in the active cavity 4, a return spring 7 is sleeved on the piston rod 5, and the upper end of the return spring 7 abuts on the adjusting seat 3; specifically, a positioning groove 16 is provided at the bottom of the adjusting seat 3, the upper end of the return spring 7 is placed in the positioning groove 16, and the lower end abuts on the piston 6, the active cavity 4 An air outlet 8 is provided on one side of the upper end of the piston 6. When the valve body 1 is connected to the external tire valve core, the air pressure pushes the piston 6 up and makes it rise above the air outlet 8. At this time, the tire can be deflated. The outer surface of the valve body 1 is symmetrically provided with scales 102. The lower end surface of the shell 2 is used in conjunction with the scale 102, that is, the lower end surface of the shell 2 indicates the current scale of the shell 2. The piston 6 can be pushed to deflate only when the tire pressure is above this pressure. Therefore, the tire pressure can be directly adjusted to the corresponding value of the scale 102 and then the deflation will stop automatically, thereby achieving a precise control effect. When the shell 2 and the adjustment seat 3 descend, the reset spring 7 will be compressed, so that the pressure that overcomes the elastic force of the reset spring 7 and pushes the piston 6 will increase, thereby adjusting the required tire pressure.

[0030] In some embodiments, Figure 2 As shown, the outer wall of the adjusting seat 3 is provided with a first external thread 301, the inner wall of the valve body 1 is provided with a first internal thread 101 matching the first external thread 301, and an avoidance groove 9 is provided between the shell 2 and the adjusting seat 3. The end of the valve body 1 can enter the avoidance groove 9. By rotating the shell 2, the adjusting seat 3 can be raised and lowered along the valve body 1 through the thread, and at this time, the end of the valve body 1 enters the avoidance groove 9.

[0031] In some embodiments, Figure 2 , Figure 6 and Figure 7 As shown, a one-way valve 10 is installed in the active chamber 4, and a conical sealing hole 11 is provided on the upper end surface of the one-way valve 10, and the lower end of the sealing hole 11 passes through the one-way valve 10. The lower end surface of the piston 6 is a conical surface, so the return spring 7 pushes the piston 6 to lean against the sealing hole 11, and a plurality of vent holes 12 are provided at the bottom of the valve body 1, and the vent holes 12 are connected to the sealing hole 11. A second internal thread 13 is also provided at the bottom of the valve body 1, and the second internal thread 13 is connected to the valve core of the external wheel. The gas in the tire can enter the active chamber 4 after passing through the vent holes 12 and the sealing hole 11.

[0032] In some embodiments, Figure 1 , Figure 4 and Figure 8 As shown, a first sealing ring 14 is installed at the upper end of the second internal thread 13 of the valve body 1, a second sealing ring 15 is installed at the connection between the upper part of the valve body 1 and the shell 2, a first anti-slip portion 17 is provided on the upper outer wall of the shell 2, a terminal 18 is threadedly connected to the top end of the piston rod 5, and a second anti-slip portion 19 is provided on the outer wall of the terminal 18. The first anti-slip portion 17 facilitates the rotation of the shell 2, and the second anti-slip portion 19 facilitates the disassembly of the terminal 18 and the piston rod 5.

[0033] The utility model provides an adjustable tire deflation valve, the surface of the valve body is provided with a scale, which cooperates with the shell to display the tire pressure required for the current deflation, that is, to adjust the tire pressure after deflation, the shell is rotated to make it descend and then the spring inside the valve body is compressed, so that the constant tire pressure of the deflation valve can be increased, thereby achieving the effect of accurately controlling the tire pressure after deflation, so that the safety of the tire is improved when it is used.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An adjustable tire deflation valve, comprising a valve body (1) and a housing (2) sleeved on the end of the valve body (1), characterized in that: An adjusting seat (3) is installed in the shell (2), and the adjusting seat (3) is connected to the valve body (1) in a liftable manner. An active chamber (4) is provided in the valve body (1). A piston rod (5) is provided through the center of the adjusting seat (3). A piston (6) at the end of the piston rod (5) is slidably arranged in the active chamber (4). A return spring (7) is sleeved on the piston rod (5). The upper end of the return spring (7) abuts against the adjusting seat (3). An air outlet (8) is provided on one side of the active chamber (4) located at the upper end of the piston (6). The bottom of the valve body (1) is connected to a tire vent to push the piston (6) up to the air outlet (8) for deflation. The shell (2) and the adjusting seat (3) are lowered to compress the return spring (7) to increase the air pressure required for deflation.

2. The adjustable tire deflation valve according to claim 1, characterized in that: The outer surface of the valve body (1) is symmetrically provided with scales (102), and the lower end surface of the shell (2) is used in conjunction with the scales (102).

3. The adjustable tire deflation valve according to claim 1, characterized in that: The outer wall of the adjustment seat (3) is provided with a first external thread (301), the inner wall of the valve body (1) is provided with a first internal thread (101) matching with the first external thread (301), and an avoidance groove (9) is provided between the shell (2) and the adjustment seat (3), and the end of the valve body (1) can enter the avoidance groove (9).

4. The adjustable tire deflation valve according to claim 1, characterized in that: A one-way valve (10) is installed in the movable chamber (4), the upper end surface of the one-way valve (10) is provided with a conical sealing hole (11), the lower end of the sealing hole (11) passes through the one-way valve (10), the lower end surface of the piston (6) is a conical surface, and the return spring (7) pushes the piston (6) to abut against the sealing hole (11).

5. The adjustable tire deflation valve according to claim 4, characterized in that: The bottom of the valve body (1) is provided with a plurality of vent holes (12), and the vent holes (12) are in communication with the sealing hole (11).

6. The adjustable tire deflation valve according to claim 1, characterized in that: The bottom of the valve body (1) is also provided with a second internal thread (13), and the second internal thread (13) is connected to the valve core of the external wheel.

7. The adjustable tire deflation valve according to claim 6, characterized in that: A first sealing ring (14) is installed on the upper end of the valve body (1) located on the second internal thread (13).

8. The adjustable tire deflation valve according to claim 1, characterized in that: A second sealing ring (15) is installed at the connection between the upper part of the valve body (1) and the housing (2).

9. The adjustable tire deflation valve according to claim 1, characterized in that: A positioning groove (16) is provided at the bottom of the adjustment seat (3), the upper end of the return spring (7) is placed in the positioning groove (16), and the lower end abuts against the piston (6).

10. The adjustable tire deflation valve according to claim 1, characterized in that: The upper outer wall of the housing (2) is provided with a first anti-slip portion (17), the top end of the piston rod (5) is threadedly connected with a terminal (18), and the outer wall of the terminal (18) is provided with a second anti-slip portion (19).

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