TWM584423U - Tire gage with constant-pressure inflation - Google Patents

Abstract

The present invention provides a tire pressure gauge with constant pressure inflation, which includes: a branch seat, an air pressure adjustment unit, a check valve, an air pressure measurement unit, and a pressure relief valve. In the case of using the new-type constant-pressure inflation tire pressure meter, in addition to measuring whether the tire pressure of the inflation object is normal, the user can also use the air pressure when the tire pressure of the inflation object is too low. The adjusting unit and the diverging seat inflate the object to be inflated, and can also operate the pressure relief valve to deflate the object to be inflated when the tire pressure of the object to be inflated is too high, so that the tire pressure can be accurately set at Within a normal tire pressure range. When the tire pressure of the object to be inflated is too high, the one-way valve can also prevent the high-pressure gas in the object to be inflated from refilling the air pressure adjustment unit through the branch seat, thereby achieving the effect of protecting the air pressure adjustment unit.

Description

Constant pressure inflated tire pressure gauge

The present invention relates to the related technical field of tire pressure gauges, in particular to a constant-pressure inflation type tire pressure gauge used for precise calibration of any tire pressure gauge.

As is known to all, whether the air pressure of the inflated material is normal or not is a key factor affecting driving safety. If the tire pressure is too low, the area where the tire contacts the ground will increase and the shoulder wear will be accelerated. Conversely, if the tire pressure is too high, the tire will be deformed due to excessive expansion, which will reduce the elasticity of the carcass. In this case, if the tire is impacted during the driving of the vehicle, internal cracks or punctures may occur. Phenomenon.

Therefore, tire pressure detection has been listed as one of the important items for regular vehicle maintenance. At present, various types of tire pressure gauges are sold on the market, including: external tire pressure gauges and internal tire pressure gauges; and according to their functions, they can be further divided into electronic tire pressure gauges and air pressure gauges. Tire pressure gauge. FIG. 1 is a perspective view showing a conventional tire pressure gauge. Specifically, the conventional tire pressure gauge 1 'is a pneumatic tire pressure measuring device, and includes a pneumatic module 11', a barometer 12 ', and a gas nozzle 13'. When performing tire pressure measurement, an air compressor is first connected to an air inlet port 111 'of the air pumping module 11', and then the air nozzle 13 'is connected to the air nozzle of a car tire.

After that, by pressing a pumping unit 112 'of the pumping module 11', the compressed air in the air compressor can be sent to the tire under test through the nozzle 13 '. In addition, when the tire is inflated, the barometer 12 'displays the tire pressure value of the tire.

The inflated tire pressure measuring device shown in Fig. 1 has the advantages of convenient operation and measurable tire pressure; however, in the process of inflating a tire with a pressurized pump, the pressurized pump station The pressure value of the compressed gas provided at the outlet end of the pressurized pump is often different from the pressure value at the inlet end of the tire, causing the actual tire pressure value in the tire to be inconsistent with a reference or a preset tire pressure value . In addition, no matter what type of tire pressure measurement device it is, it will gradually lose its measurement accuracy after long-term use. If it is used without a correction, the inflated tire pressure measurement device will be used. Device, it will happen that the tire pressure value displayed by the tire pressure gauge is normal, but the value of the air pressure in the material to be inflated and the value displayed by the measurement are to a certain extent different. Although the tire pressure gauge can be returned to the original factory or some units for zero calibration, this method is obviously too time consuming and inconvenient for users.

Therefore, based on the foregoing reasons, the author of this case tried his best to research and create, and finally developed a new type of constant pressure inflation tire pressure gauge.

The main purpose of the present invention is to provide a tire pressure gauge with constant pressure inflation, which includes: a branch seat, an air pressure adjustment unit, a check valve, an air pressure measurement unit, and a pressure relief valve. In the case of using the new-type constant-pressure inflation tire pressure meter, in addition to measuring whether the tire pressure of the inflation object is normal, the user can also use the air pressure when the tire pressure of the inflation object is too low. The adjusting unit and the diverging seat inflate the object to be inflated, and can also operate the pressure relief valve to deflate the object to be inflated when the tire pressure of the object to be inflated is too high, so that the tire pressure can be accurately set at Within a normal tire pressure range. When the tire pressure of the object to be inflated is too high, the one-way valve can also prevent the high-pressure gas in the object to be inflated from refilling the air pressure adjustment unit through the branch seat, thereby achieving the effect of protecting the air pressure adjustment unit.

In order to achieve the above-mentioned main purpose of the present invention, the creator of the present case provides an embodiment of the tire pressure gauge with constant pressure inflation, including: a divergent seat having a first air inlet port, a first air outlet port, a first Two air outlets, and the branch seat has an air passage in communication with the first air inlet, the first air outlet, and the second air outlet; a pressure adjustment unit having a second air inlet, a first Three outlet ports, and one An air pressure regulating member, and the third air outlet port is connected to the first air inlet port of the branch seat; a one-way valve is connected to the first air inlet port of the branch seat and the third air inlet of the air pressure adjustment unit Between the outlet ports; a pressure measurement unit connected to the first outlet port of the branch seat; and a pressure relief valve connected to the second outlet port of the branch seat for transmitting a first gas And a gas nozzle connected to a to-be-inflated object through a transmission line; wherein a gas supply device provides a compressed gas to the air pressure adjustment unit through a second gas transmission line, and the compressed gas passes through a precision of the air pressure adjustment member After the air pressure adjustment, a fixed air pressure value is obtained; wherein the compressed gas enters the branch seat through the third air outlet port, the check valve and the first air inlet port, and passes through the second air outlet port and the pressure relief valve. And the first gas transmission pipeline is transmitted to the gas nozzle to inflate the object to be aerated; wherein when a pressure measurement value displayed by the pressure measurement unit exceeds a predetermined value, the pressure relief valve pair is operated The tire inflated Pressure relief.

In the foregoing embodiment of the constant pressure inflation tire pressure gauge of the present invention, the precision air pressure adjusting unit may be any of the following: a diaphragm gas pressure reducing valve, a spring diaphragm gas pressure reducing valve, and a piston gas reducing Pressure valve, lever type gas pressure reducing valve, or bellows type gas pressure reducing valve.

In the foregoing embodiment of the constant pressure inflation tire pressure meter of the present invention, the air pressure measurement unit is an electronic watch type tire pressure gauge.

In the foregoing embodiment of the constant pressure inflation tire pressure gauge of the present invention, the gas supply device may be any one of the following: an air compressor or a compressed gas cylinder.

1‧‧‧flat tire pressure gauge

11‧‧‧ disagreement seat

110‧‧‧first air inlet

111‧‧‧First air outlet

112‧‧‧Second air outlet

12‧‧‧Air pressure adjustment unit

120‧‧‧Second intake port

121‧‧‧ Third air port

122‧‧‧Air pressure regulator

13‧‧‧Check valve

14‧‧‧Barometric measurement unit

141‧‧‧display

15‧‧‧ Pressure Relief Valve

2‧‧‧ to be inflated

21‧‧‧ Gas nozzle

3‧‧‧Gas supply device

AL1‧‧‧First gas transmission pipeline

AL2‧‧‧Second Gas Transmission Pipeline

FIG. 1 is a perspective view of a conventional tire pressure gauge; FIG. 2 is a perspective view of a constant pressure inflation tire pressure gauge; and FIG. 3 is a constant pressure inflation tire pressure of the new type Meter another perspective view.

In order to more clearly describe a constant pressure inflation tire pressure gauge proposed by the present invention, the preferred embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 2 shows a perspective view of a constant pressure inflated tire pressure gauge of the new model, and FIG. 3 shows another perspective view of a constant pressure inflated tire pressure gauge of the new model. As shown in FIG. 2 and FIG. 3, the new type of constant-pressure inflation tire pressure gauge 1 includes: a branch seat 11, an air pressure adjusting unit 12, a check valve 13, an air pressure measuring unit 14, and一 压 压 阀 15。 A pressure relief valve 15. According to the design of the new model, the branch seat 11 has a first air inlet port 110, a first air outlet port 111, and a second air outlet port 112, and the branch seat 11 has an air passage inside, the air passage and the first The air inlet port 110, the first air outlet port 111, and the second air outlet port 112 communicate with each other. On the other hand, the air pressure adjusting unit 12 has a second air inlet port 120, a third air outlet port 121, and a air pressure adjusting member 122. The third air outlet port 121 is connected to the branch through the check valve 13. The first air inlet 110 of the seat 11.

In more detail, the check valve 13 is connected between the first inlet port 110 and the third outlet port 121, and the air pressure measurement unit 14 is connected to the first outlet port of the branch seat 11. 111, and has a display screen 141 (for example, a liquid crystal screen). On the other hand, the new type makes the pressure relief valve 15 connected to the second air outlet port 112 of the branch seat 11 and is used to connect to a to-be-inflated object 2 through a first gas transmission pipeline AL1. An air nozzle 21 (a tire in this embodiment).

When using the new-type constant-pressure inflation tire pressure gauge 1, the first gas transmission pipeline AL1 is first connected to the gas nozzle 21 of the object 2 to be inflated (as shown in FIG. 2). At this time, the air pressure measurement unit 14 connected to the first air outlet port 111 can measure a tire pressure of the to-be-inflated object 2 through the branch seat 11. If the air pressure measurement unit 14 indicates that the tire pressure is too low and does not fall within a normal tire pressure range, for example: 32 to 34 psi, the gas supply device 3 can be connected to the tire through the second gas transmission pipeline AL2. The second air inlet 120 of the air pressure adjusting unit 12; the gas supply device 3 may be, for example, an air compressor or a compressed gas cylinder. After the gas supply device 3 is activated, the gas supply device 3 provides a compressed gas to the gas pressure adjustment unit 12 through the second gas transmission pipeline AL2, so as to use the gas pressure adjustment member 122 to perform a gas pressure adjustment process. So that the compressed gas has a fixed pressure value. Then, the compressed gas having the fixed pressure value passes through The third outlet port 121, the check valve 13 and the first inlet port 110 enter the branch seat 11 and further pass through the second outlet port 112, the pressure relief valve 15 and the first gas. The transmission line AL1 is transmitted to the air nozzle 21 of the to-be-inflated object 2 to inflate the to-be-inflated object 2.

In particular, during the inflation of the to-be-inflated object 2, it is possible to know whether the tire pressure of the to-be-inflated object 2 has fallen within the normal tire pressure range through the air pressure measurement value displayed by the air pressure measurement unit 14 Inside. When the tire pressure exceeds the upper limit of the normal tire pressure range, for example: more than 34 psi, it means that the pressure of the gas in the to-be-inflated object 2 is very high, and the high-pressure gas in the to-be-inflated object 2 is easy to follow A gas transmission line AL1 is refilled to the branch 11. It is worth noting that, when the high-pressure gas is refilled, the one-way valve 13 will block the gas from being refilled toward the gas pressure regulating unit 12 to protect the gas pressure regulating unit 12.

In short, in the case of using the new-type constant-pressure inflation tire pressure gauge 1, in addition to measuring whether the tire pressure of the inflator 2 is normal, the user can also measure the tire pressure of the inflator 2 Inflate the to-be-inflated object 2 when it is low, and deflate the to-be-inflated object 2 when the tire pressure of the to-be-inflated 2 is too high. Therefore, with the cooperation of the check valve 13, the air pressure regulating unit 12, and the pressure relief valve 15, the user is easy to correct and / or set the tire pressure of the inflation 2 so that the tire pressure can be accurately It is set within a normal tire pressure range.

It is added that the lower limit and the upper limit of the normal tire pressure range mentioned in the foregoing description are different according to different types of inflated materials, so the aforementioned normal tire pressure range (32 ~ 34psi) is not This new type of constant pressure inflated tire pressure gauge 1 is subject to the limiting conditions of the reference tire pressure value. Furthermore, according to the design of the new model, the air pressure adjusting element 122 of the air pressure adjusting unit 12 can adjust the air pressure of the compressed gas in a high-precision manner, and its precision is more precise than that of a tire pressure measuring device of an ordinary car. Degree is higher. For example, FIG. 2 and FIG. 3 show that the air pressure adjusting member 122 is a rotary adjusting member. Therefore, the user can slightly rotate the air pressure adjusting member 122 to gradually and accurately adjust the air pressure value of the compressed gas. To a precise fixed value, the final effect of correcting the air pressure value displayed by the air pressure measurement unit 14 is achieved. Therefore, in the present invention, the one-way valve 13 is particularly connected between the first inlet port 110 of the branch seat 11 and the third outlet port 121 of the air pressure adjusting unit 12. The check valve 13 only allows gas to flow from the third outlet port 121 into the first inlet port 110, so that the gas can be prevented from being refilled from the pressure adjusting unit 12 from the branch seat 11 to achieve the effect of protecting the pressure adjusting unit 12.

On the other hand, in the feasible application example of the constant pressure inflation tire pressure gauge 1 of the present invention, the gas pressure adjusting unit 12 may be a film type gas pressure reducing valve, a spring film type gas pressure reducing valve, or a piston type gas pressure reducing valve. Pressure valve, lever type gas pressure reducing valve, or bellows type gas pressure reducing valve. In addition, the type of the air pressure measuring unit 14 is not limited in the present invention, and may be any type of air pressure gauge, such as an electronic pressure type tire pressure gauge or an air pressure type tire pressure gauge. Of course, it is also feasible to directly use a set of corrected tire pressure meters as the air pressure measurement unit 14.

Thus, the above description has explained in detail various embodiments of the novel constant pressure inflation tire pressure gauge and corresponding features and functions in conjunction with the drawings. However, it must be emphasized that the above detailed description is a specific description of the feasible embodiment of the new model, but this embodiment is not intended to limit the scope of the patent of the new model, and any equivalent implementation without departing from the spirit of the new technology or Changes should be included in the patent scope of this new model.

Claims (4)

A tire pressure gauge with constant pressure inflation includes: a branch seat having a first air inlet port, a first air outlet port, and a second air outlet port. An air passage communicating with the first air outlet and the second air outlet; an air pressure adjusting unit having a second air inlet, a third air outlet, and an air pressure adjusting member, and the third air outlet is connected to The first intake port of the branch seat; a check valve connected between the first intake port of the branch seat and the third outlet port of the air pressure adjustment unit; a pressure measurement unit, A first outlet port connected to the branch seat; a pressure relief valve connected to the second outlet port of the branch seat for connecting to a gas mouth of an object to be inflated through a first gas transmission pipeline ; Wherein a gas supply device provides a compressed gas to the air pressure adjustment unit through a second gas transmission pipeline, and the compressed gas has a fixed air pressure value after being adjusted by a precise air pressure of the air pressure adjustment member; wherein the compression The gas passes through the third outlet port, the A directional valve and the first intake port enter the branch, and are transmitted to the air nozzle through the second outlet port, the pressure relief valve and the first gas transmission pipeline to inflate the object to be inflated; When a pressure measurement value displayed by the air pressure measurement unit exceeds a predetermined value, the pressure relief valve is operated to release the tire pressure of the object to be inflated. The tire pressure gauge of constant pressure inflation as described in item 1 of the scope of the patent application, wherein the precision air pressure regulating unit can be any of the following: a film type gas pressure reducing valve, a spring film type gas pressure reducing valve, a piston type Gas pressure reducing valve, lever type gas pressure reducing valve, or bellows type gas pressure reducing valve. The tire pressure gauge of constant pressure inflation according to item 1 of the scope of patent application, wherein the air pressure measuring unit is an electronic watch type tire pressure gauge. The tire pressure gauge of constant pressure inflation as described in item 1 of the scope of patent application, wherein the gas supply device may be any one of the following: an air compressor or a compressed gas cylinder.