KR100217653B1 - Air pressure control valve - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air pressure regulating air valve for an automobile tire. The air valve 10 according to the present invention includes a valve body 11 having a double valve core 20 and a valve body 20 having a setting for adjusting a pressing force for pressing the outer valve core 20 against the valve seat 11a And means (12). The inner valve core 30 is attached to the hollow portion 24 in the outer valve core 20 and is opened upon air injection so that the outer valve core 20 is in contact with the valve seat 11a and the setting portion 14, (25) so as to discharge air having a pressure higher than the set pressure. The air pressure control type air valve according to the present invention is configured such that the pressure of the spring 25 supporting the outer valve core 20 is adjusted by the setting means 12 provided in the valve body 11, Can be set.

This makes it possible to adjust the air pressure of the tire in a pressure state suitable for the state of the road to be driven, thereby contributing to not only the stability of the running but also the ride comfort of the vehicle.

Description

Air-regulated air valve

FIG. 1 is a sectional view showing a configuration of a conventional tire.

2 is a plan view of the air valve according to the present invention.

3 is a sectional view of the air valve according to the present invention.

FIG. 4 is a sectional view showing the configuration of the air pressure setting means. FIG.

5 is a perspective view of the inner valve core according to the present invention.

FIG. 6 is a sectional view showing the relationship between the outer valve core and the inner valve core according to the present invention at the time of air injection.

7 is a cross-sectional view showing the relationship between the outer valve core and the inner valve core according to the present invention at the time of air discharge.

DESCRIPTION OF THE REFERENCE NUMERALS

10: air valve 11: valve body

12: setting means 13: handle

14: setting portion 14a: through hole

15: spring 16: ball

17: fixing means 20: outer valve core

21: Through hole 24: Cavity

25: spring 30: inner valve core

31: passage

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air valve for an automotive tire, and more particularly to an air pressure regulated air valve for controlling the air pressure inside a tire.

This structure has a structure in which compressed air is installed inside the wheel of a tire of an automobile and has a function of raising the ride comfort by absorbing impact from the road surface by increasing the contact force with the road surface because it vibrates by directly contacting with the road surface.

The tires are resistant to high loads with air pressure of 60 to 90 psi (4.2 ~ 6.3kg / ㎠) depending on the working pressure. The thickness of the tires is so thick that high pressure tires used in trucks and buses and air pressures of 2.1 ~ 2.5kg / ) Is used for small trucks. It is divided into low-pressure tires, which are about twice as large as high-pressure tires with a cross-sectional area and have a large ground contact area with the road surface.

In addition, it is divided into a tube tire and a tubeless tire depending on the presence or absence of a tube accommodating air in the tire.

An air valve is used to inject air into and seal air from the thus discriminated tires.

Figure 1 shows a cross section of a conventional tube tire. The tire 2 is mounted on the rim 1 of the wheel and is provided with an air valve 3 for injecting and sealing air through the tube of the tire 2.

The conventional air valve 3 generally comprises a valve elastically supported by a compression spring and a valve cap for pushing a valve from the outside to introduce air. Accordingly, the air valve has a simple structure in which when the air is injected, the valve is closed to prevent the air in the tire from flowing out.

However, the tractive force and the buffering force of the tire are influenced by the air pressure inside the tire. In the case of the running of the city in which the road is flat and the curvature is small, the air pressure in the tire is low so that running in a state in which the tractive force is improved increases the ground contact area with the road, It is advantageous to increase the air pressure inside the tire to reduce the grounding area, to improve the strength against the load, and to increase the buffering force.

However, since the conventional air valve is manufactured so that the pressure inside the tire can not be controlled simply as a structure for air injection and sealing, it is impossible to arbitrarily set the pressure inside the tire according to driving conditions.

Therefore, if an air valve of a type capable of setting the air pressure of the tire to an appropriate state as required is found, it will be convenient for improving the stability of the vehicle.

The present invention provides a pressure control type air valve capable of controlling the air pressure of a tire of the present invention.

In order to achieve the above object, the present invention provides an outer valve core which is in close contact with a conical valve seat and has a hollow portion and a through hole penetrating the hollow portion in the longitudinal direction, And a setting portion provided on the injection port side of the valve body and provided with a through-hole between the outer valve core of the valve body and the compression spring, the setting portion and the setting portion slide There is provided an air pressure regulating air valve comprising a setting means having a cylindrical body mounted fixedly and having a guide groove at an upper end thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a configuration of an air pressure control type air valve according to the present invention will be described in detail with reference to the accompanying drawings.

2 and 3 show the construction of the air pressure regulating air valve 10 according to the present invention.

As shown in the drawing, the air valve 10 according to the present invention is formed with setting means 12 for setting the air pressure from the valve body 11 to the injection port 18 side.

The setting means 12 according to the present invention is constituted by a cylindrical body 19 having a through hole 18 therein and a setting portion 14 slidably mounted in the through hole 18. A guide groove 19a extending in the longitudinal direction in the direction of the valve body 11 is formed in the upper portion of the body 19 adjacent to the injection port 18a of the through hole 18 and is set to the outside of the guide groove 19a The handle 13 of the part 14 is protruded. The adjustment of the setting portion 14 may be performed by controlling the sealing force of the valve body 11 by setting the position of the setting portion 14 by moving the handle 13 along the longitudinal direction of the guide groove 19a, The air pressure inside the tire corresponding to the position of the setting portion 14 along the longitudinal direction of the guide groove 19a is preferably indicated by the scale 18c.

3, the body 19 of the setting means 12 is provided with a through hole 18 therein and a plurality of semicircular grooves 18b are formed at the inner circumferential lower end of the body 19 The guide groove 19a described above with reference to FIG. 2 is formed at the upper end of the circumference.

The setting portion 14 has a handle 13 formed upwardly in a cylindrical member having a through hole 14a at the center and an elastic fixing portion 16 having a ball 16 mounted on a lower end thereof with a spring 15 interposed therebetween. (17) is provided to be engaged with the semicircular groove (18b) formed at the lower end of the through hole (18) of the setting means (12).

At this time, air can be injected from the outside into the valve body 11 through the center through hole 14a of the setting portion 14. [ 4, the setting portion 14 is slidably fitted into the through-hole 18 of the setting means 12 and is fixed by the resiliently mounted ball 16 to the setting means 12, The ball 16 resiliently mounted in the fixing means 17 of the setting portion 14 is fixed to the fixing means 17 so that the fixing means 17 of the setting portion 14 can be fixed to the semi- So that the setting portion 14 is moved back and forth along the semicircular groove 18b to be fixed.

3, the setting portion 14 according to the present invention is provided so as to press the outer valve core 20 to be described later with the compression spring 25 against the valve seat 11a. Therefore, when the setting portion 14 is moved in the direction of the valve body 11, the pressure for pressing the valve core 20 against the valve seat 11a increases, and when the valve core 20 is moved in the opposite direction, The force is reduced. As will be described later, the outer valve core 20 prevents the air from being exhausted from the tire, and the mounting pressure of the outer tube 20 is varied by the setting portion 14 of the setting means 12, It is possible to restrict the air pressure of the engine.

The construction of the valve body 11 according to the present invention will be described in detail with reference to FIG. 3, FIG. 5 to FIG. 7.

As shown in the figure, the valve body 11 according to the present invention comprises an outer valve core 20 and an inner valve core 30 resiliently mounted on the valve seat 11a.

The outer valve core 20 has a hollow portion 24 for mounting the inner valve core 30 therein and a through hole 21 passing through the hollow portion 24. [ The contact portion with the valve seat 11a forms a conical flat cross section and is pressed against the valve seat 11a to seal the inside of the tire. The outer valve core 20 according to the present invention is provided with the compression spring 25 provided between the setting portion 14 and the outer valve core 20, Sheet 11a. The sealing force of the outer valve core 20 with respect to the valve seat 11a is determined by the resilient mounting force of the spring 25 by the setting portion 14. [

The inner valve core 30 according to the present invention is installed in the inner cavity portion 24 of the outer valve core 20 described above so that the inner diameter of the through hole 21 of the hollow portion 24 of the outer valve core 24 And is attached to the second valve seat 24a formed on the opening side with a spring 35 interposed therebetween. To this end, an annular support end 22 for supporting the spring 35 is formed at the through hole outlet 25 of the outer valve core 20.

A perspective view of the inner valve core 30 is shown in FIG. As shown in the figure, the inner valve core 30 according to the present invention has a plurality of semicircular passages 31 formed in the circumferential direction. The configuration of the passage 31 is a configuration for preventing air infusion and air leakage. That is, as can be seen from the third road, the air is introduced from the inlet 18 of the valve 10 to be pushed in the outer valve core 20 to the left in the drawing, and the inner valve core 30 is injected It is possible to easily inject air by pushing the inner valve core 30 slightly to the left by the passage 31 formed in the circumferential direction of the inner valve core 30. [ As will be described later, the inner valve core 30 according to the present invention is pressed against the second valve seat 24a in the outer valve core 20 by the restoring force of the spring 35 as well as the air pressure inside the tire, This is because pneumatic pressure is required when air is injected. Therefore, it is preferable that the air passage 31 of the inner valve core 30 is formed to extend from the circumferential portion 32 to a part of the conical portion 33 to facilitate the infusion of air.

Operation of the pneumatic air valve according to the present invention thus constructed is shown in FIGS. 6 and 7. FIG.

FIG. 6 shows the relationship between the outer valve core 20 and the inner valve core 30 when air is injected into the tire. As shown in FIG. 3, when injecting air, the outer valve core 20, which is in close contact with the valve seat 11a by the spring 25 by the setting portion 14, So that the valve seat 11a is tightly adhered to the valve seat 11a with a strong pressure to prevent the inflow of the injected air. Therefore, the air to be injected pushes the inner valve core 30 mounted inside the outer valve core 20 to be injected into the tire through the plurality of air passageways 31 formed in the circumferential direction of the inner valve core 30 do. Therefore, the air pressure to be injected is injected into the tire without limitation.

7 shows the relationship between the outer valve core 20 and the inner valve core 30 when excessively injected air is discharged to the outside of the tire by the air pressure setting inside the tire.

3, the outer valve core 20 is resiliently biased against the valve seat 11a by the setting portion 14 of the setting means 12, so that the inflated air pressure in the tire is transmitted to the spring The outer valve core 20 is opened by pushing the outer valve core 20 from the valve seat 11a to the right to open the outer valve core 20 so that the gap between the outer valve core 20 and the valve seat 11a . At this time, since the inner valve core 30 is tightly attached to the valve seat 24a in the outer valve core 20 by the high pressure air inside the tire as well as the spring 35 in the outer valve core 20 with strong pressure There is no outflow to the inner valve core 30. When the pressure of the injected air is lowered due to the outflow of air and the set pressure is reached, the outer valve core 20 is brought into close contact with the valve seat 11a by the pressure of the spring 25 supported by the setting portion 14, The air pressure set by the setting means 12 is maintained in the tire.

As described above, the pressure-regulated valve 10 according to the present invention is configured such that the pressure for pressing the outer valve core 20 to the valve seat 11a, which is coupled to the valve body 11, is variably set by the setting means 12 It is possible to maintain the optimum running state by adjusting the air pressure in the tire according to the driving conditions and the like.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (3)

An outer valve core which is in close contact with a conical valve seat and has a hollow portion and a through hole penetrating the hollow portion in the longitudinal direction in the longitudinal direction, a valve body and a valve body constituted by an inner valve core, A cylindrical body having a setting portion and a setting portion slidably mounted on the inlet port side of the main body, the setting portion having a through hole in the longitudinal direction and provided between the outer valve core and the outer valve core via a compression spring, A pneumatic regulating air valve comprising the setting means. [2] The apparatus according to claim 1, wherein a plurality of semicircular grooves are formed in a longitudinal direction at a lower end of a through hole of a body of the setting means, and a ball mounted on a lower end of the setting portion through a spring to elastically couple with the groove Characterized in that it comprises fixing means. The air pressure regulated air valve according to claim 1, wherein a plurality of semicircular air passages are formed in the circumferential portion of the inner valve core in the longitudinal direction.