CN112032372A

CN112032372A - Inflation and deflation valve for vehicle tire

Info

Publication number: CN112032372A
Application number: CN202010927385.1A
Authority: CN
Inventors: 翟瑞霞; 曹立; 包春伟; 陈熙洁; 任璇; 张宏伟
Original assignee: Inner Mongolia First Machinery Group Corp
Current assignee: Inner Mongolia First Machinery Group Corp
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2020-12-04
Anticipated expiration: 2040-09-07
Also published as: CN112032372B

Abstract

The invention relates to a vehicle tire inflation and deflation valve. The inflation and deflation valve comprises an inflation nozzle (1), a valve core (2), a plug (3), a nut (4), a limiting plate (5), a backing plate (9), a spring (10) and a rubber seat (12); the valve core (2) is fixed in a center hole at one end of the inflating valve (1), a spherical plug at the other end of the inflating valve is slidably arranged in a conical center hole at one end of the rubber seat (12), the center blind hole of the inflating valve (1) is an axial air passage, a radial air passage is arranged on the inflating valve (1), the axial air passage is communicated with the radial air passage, the radial air passage is communicated with an inner cavity of a tire through a built-in air passage of a rim, a nut (4) is sleeved and fixed on the nut (3), the other end of the nut (3) is fixedly connected with the nut, and a base plate (9) and a spring (10) are sequentially sleeved in the middle of the periphery. The invention realizes bidirectional inflation and deflation and solves the technical problems of overlarge volume, poor universality and poor reliability of the conventional tire inflation valve.

Description

Inflation and deflation valve for vehicle tire

Technical Field

The invention belongs to the technical field of vehicle tires, and particularly relates to a vehicle tire inflation and deflation valve.

Background

The inflation and deflation valve is widely applied to various wheeled vehicles and used for inflating and deflating tires and ensuring the pressure maintaining performance of the tires. With the development of the central inflation and deflation function of the wheeled vehicle, the requirements on the inflation and deflation valve of the double air inlets are higher.

Most of the existing domestic bidirectional tire inflation and deflation valves are large in size, are mostly installed on the surface of a rim, and need to additionally design connecting pieces such as protective covers and pipelines. When the vehicle needs to pass through narrow spaces such as bridge openings, airplane cabin doors and the like, the charging and discharging air valve is always at the position with the largest width of the whole vehicle, and the trafficability of the whole vehicle in the narrow space is further limited. Meanwhile, the traditional air charging and discharging valve interface basically adopts different connection forms aiming at different wheel products, and the interface universality is poor. In addition, the number of parts is large, and the reliability is poor.

Disclosure of Invention

The invention aims to provide a vehicle tire inflation and deflation valve, which realizes bidirectional inflation and deflation, has a compact structure and solves the technical problems of overlarge volume, poor universality and poor reliability of the conventional tire inflation valve.

The technical scheme of the invention is that the vehicle tire inflation and deflation valve comprises an inflation nozzle 1, a valve inside 2, a plug 3, a nut 4, a limiting plate 5, a base plate 9, a spring 10 and a rubber seat 12;

the valve core 2 is fixed in a central hole at one end of the inflating nozzle 1, the other end of the inflating nozzle is of a spherical plug structure, the spherical plug is arranged in a conical central hole at one end of the rubber seat 12 in a sliding way, the periphery of the spherical plug is provided with an annular groove, a sealing ring is arranged in the annular groove, the rubber seat 12 is fixed in a mounting hole on the rim 14, a gap exists between the inner periphery of the conical central hole of the rubber seat and the periphery of the spherical plug, and the gap is communicated with an air passage arranged,

the center hole of the inflating valve 1 is a blind hole, the center blind hole of the inflating valve 1 is an axial air passage, the inflating valve 1 is provided with a radial air passage, the axial air passage is communicated with the radial air passage, the radial air passage is communicated with an inner cavity of a tire through an inner air passage of a rim, the inflating valve 1 is slidably installed in an inner hole of a plug 3, one end of the inflating valve 1 is provided with a tool withdrawal groove, a limiting plate 5 is installed in the tool withdrawal groove, a nut 4 is sleeved and fixed on the plug 3, a distance exists between an end surface in the nut 4 and an end surface of one end of the inflating valve, one end of the plug 3 is fixedly connected with an installation hole in the rim, the other end of the plug 3 is fixedly connected with the nut, a backing plate 9 and a spring 10 are sequentially sleeved in the middle.

A sealing groove is designed in the periphery of the middle of the inflating valve 1, a sealing ring is installed in the sealing groove, sealing grooves are formed in two ends of the

plug

3, 1 sealing ring is installed in the sealing grooves in the two ends respectively, and a sealing ring is installed between the inner side of the rim 14 and a binding surface of a vehicle central inflation and deflation system.

The invention has the advantages that the bidirectional air inlet function of the tire is realized, the volume of the tire inflation valve is reduced, and the universality and the reliability are improved; the invention adopts the structure of the spherical plug and the valve core of the charging connector, realizes the bidirectional charging and discharging of the tire by means of the rim with a built-in air passage structure, and has compact structure and convenient installation; the limiting plate and the nut 4 are adopted to realize bidirectional limiting; the invention is suitable for the wheel vehicle to quickly and conveniently adjust the tire pressure through complex road surfaces such as desert, muddy or ice and snow, and the like, thereby improving the trafficability of the wheel vehicle.

Drawings

FIG. 1 is a schematic structural view of a tire inflation/deflation valve of a vehicle according to the present invention;

FIG. 2 is a schematic view of an assembled structure of the present invention in use;

fig. 3 is a partially enlarged view of fig. 2.

Detailed Description

The technical scheme of the invention is further described in detail in the following with the accompanying drawings of the specification.

As shown in fig. 1, 2 and 3, the inflation and deflation valve for vehicle tires of the present invention comprises an inflation nozzle 1, a valve core 2, a plug 3, a nut 4, a limiting plate 5, a first sealing ring 6, a second sealing ring 7, a third sealing ring 8, a pad 9, a spring 10, a fourth sealing ring 11 and a rubber seat 12. The air charging and discharging valve 13 is installed on a rim 14 with an internal air passage through a plug 3. The inflation/deflation valve 13 is communicated with an internal air passage on the rim 14, and inflates the inner cavity of the tire 15 through the internal air passage.

The inflating nozzle 1 is a main gas channel, one end of the inflating nozzle 1 is provided with a threaded joint connected with an external inflating tool, and the valve inside 2 is fixed in a central hole at one end of the inflating nozzle 1. The other end of the charging connector is of a spherical plug structure, the spherical plug is slidably arranged in a conical central hole at one end of the rubber seat 12, the rubber seat 12 is fixed in a mounting hole on the rim 14, and a gap is formed between the inner periphery of the conical central hole of the rubber seat and the outer periphery of the spherical plug and is communicated with an air passage arranged in the rim.

The periphery of the spherical plug is provided with an annular groove, and the annular groove is provided with a sealing ring IV 11. When the charging connector 1 charges air through the valve core 2, the air tightness between the spherical plug and the rubber seat 12 is ensured. The central hole of the inflating valve 1 is a blind hole, and the central blind hole of the inflating valve 1 is an axial air passage. And a radial air passage is arranged at the inner end of the axial air passage close to the spherical plug, the axial air passage is communicated with the radial air passage, and the radial air passage is communicated with the inner cavity of the tire through the rim built-in air passage. When the inflating nozzle inflates through the valve core 2, air enters the inner cavity of the tire through the axial air passage and the radial air passage.

The inflating valve 1 is slidably mounted in an inner hole of the plug 3, the periphery of the inflating valve 1 is in clearance fit with the plug, and the bidirectional inflating function is realized through the axial sliding of the inflating valve 1 in the plug inner hole. A sealing groove is designed on the periphery of the middle part of the inflating valve 1, and a sealing ring III 8 is installed in the sealing groove, so that the air tightness between the periphery of the inflating valve and the plug inner aid is ensured. A tool withdrawal groove is designed at the end part of the thread at one end of the inflating valve 1, and a limiting plate 5 is arranged in the tool withdrawal groove to realize the motion limiting of the inflating valve relative to the plug in one axial direction; the nut 4 is sleeved and connected with the plug 3 through threads, the joint is provided with the first sealing ring 6, the air tightness between the nut and the plug is guaranteed, meanwhile, a certain distance is reserved between the nut and the thread end face of one end of the inflating valve, when the inflating valve inflates through the rubber seat 12, namely, when the inflating valve inflates through a gap between the conical inner control of the rubber seat and the periphery of the spherical plug and a rim air passage, the inner end face of the nut 4 realizes that the inflating valve 1 moves in a limit direction relative to the axial direction of the plug 3.

Threads are arranged at two ends of the plug 3, one end of the plug is fixedly connected with the mounting hole in the rim, the other end of the plug is fixedly connected with the nut, sealing grooves are arranged at two ends of the plug 3, and a first sealing ring 6 and a second sealing ring 7 are respectively arranged on the sealing grooves at the two ends.

The cushion plate 9 and the spring 10 are sequentially sleeved in the middle of the periphery of the inflating valve 1 and are positioned between the spherical plug and the end face of the plug 3, and the cushion plate 9 plays a supporting role between the spring 10 and the plug 3. When the inflating valve inflates through the valve inside, the spherical plug of the inflating valve is pressed on the conical central hole of the rubber seat under the action of the spring force of the spring 10, so that the air tightness between the spherical plug and the rubber seat is ensured. When the inflating valve inflates through the rubber seat, when the gas pressure is larger than the spring force of the spring 10, the spring 10 is pressed, the inflating valve slides in the plug inner hole, the ball-shaped plug of the inflating valve leaves the conical central hole of the rubber seat 12, and a gap between the conical inner control of the rubber seat and the periphery of the ball-shaped plug forms an air passage to realize inflation.

When the inflating nozzle deflates through the valve core, the inflating and deflating tool is connected to the thread on the inflating nozzle. When the inflating nozzle deflates through the rubber seat, the pressure of the air source is set to be larger than the spring force and smaller than the internal pressure of the tire. When the inflating valve deflates through the valve core, and an external inflation and deflation tool is needed, the screw cap 4 is unscrewed, the inflation and deflation tool is connected with the threaded joint of the valve nozzle 1, the valve core 2 is jacked open, and gas enters or flows out of the inner cavity of the tire through the built-in air passage of the rim 14 and the air passage of the valve nozzle, so that inflation and deflation of the tire 15 are realized.

The inner side of the rim 14 is arranged to be aligned with an air outlet 16 of a central inflation and deflation system of the vehicle on the hub, and a sealing ring five 17 is arranged between the inner side of the rim 14 and an abutting surface of the central inflation and deflation system of the vehicle.

When the central inflation and deflation system is required to be used for inflation, the air source pressure of the central inflation and deflation system is set to a specified air pressure, the spring 10 is pushed open by the air pressure in the inner cavity of the inflation inlet 16, and air enters the inner cavity of the tire 15 through a gap between the inflating valve 1 and the rubber seat 12 and the built-in air passage of the rim 14, so that the tire inflation is realized. After inflation, air pressure at the air outlet of the pin is removed, the inflating nozzle 1 automatically rebounds to the position attached to the rubber seat by spring force, and air tightness is guaranteed through the sealing ring four 11.

When the central inflation and deflation system is required to be used for deflation, the air source pressure of the central inflation and deflation system is set to the specified air pressure, the spring 10 is pushed open by the air pressure in the inner cavity of the inflation inlet 16, and the air flows out of the inner cavity of the tire 15 through the gap between the inflating valve 1 and the rubber seat 12 and the built-in air passage of the rim 14, so that the deflation of the tire is realized. After the air release is finished, the air pressure of the air outlet is removed, the inflating nozzle 1 automatically rebounds to the position attached to the rubber seat by the spring force, and the air tightness is guaranteed through the sealing ring IV 11.

Claims

1. A vehicle tire inflation and deflation valve is characterized in that: the inflation and deflation valve comprises an inflation nozzle (1), a valve core (2), a plug (3), a nut (4), a limiting plate (5), a backing plate (9), a spring (10) and a rubber seat (12);

the valve core (2) is fixed in a central hole at one end of the inflating nozzle (1), the other end of the inflating nozzle is of a spherical plug structure, the spherical plug is arranged in a conical central hole at one end of the rubber seat (12) in a sliding way, the periphery of the spherical plug is provided with an annular groove, a sealing ring is arranged in the annular groove, the rubber seat (12) is fixed in a mounting hole on the rim (14), a gap is formed between the inner periphery of the conical central hole of the rubber seat and the periphery of the spherical plug, and the gap is communicated with an air passage arranged in,

the central hole of the inflating valve (1) is a blind hole, the central blind hole of the inflating valve (1) is an axial air passage, the inflating valve (1) is provided with a radial air passage, the axial air passage is communicated with the radial air passage, the radial air passage is communicated with the inner cavity of the tire through an air passage arranged in the rim, the inflating valve (1) is slidably arranged in an inner hole of the plug (3), one end of the inflating valve (1) is provided with a tool withdrawal groove, a limit plate (5) is arranged in the tool withdrawal groove, a screw cap (4) is sleeved and fixed on the screw plug (3), and a distance exists between the inner end surface of the screw cap (4) and the end surface of one end of the inflating valve, one end of the plug (3) is fixedly connected with the mounting hole on the rim, the other end of the plug (3) is fixedly connected with the screw cap, the backing plate (9) and the spring (10) are sequentially sleeved in the middle of the periphery of the inflating valve (1), and the backing plate (9) and the spring (10) are positioned between the spherical plug and the end face of the plug (3).

2. A vehicle tire inflation/deflation valve as claimed in claim 1, wherein: a sealing groove is designed in the periphery of the middle of the inflating valve 1, a sealing ring is installed in the sealing groove, sealing grooves are formed in two ends of the plug (3), 1 sealing ring is installed in the sealing grooves in the two ends respectively, and a sealing ring is installed between the inner side of the rim (14) and a binding surface of a vehicle central inflation and deflation system.