TWM446712U - Tire pressure detecting apparatus - Google Patents

Description

Tire pressure detecting device

The present invention relates to a detecting device, and more particularly to a tire pressure detecting device.

Vehicles have become an important means of transportation in modern society. Therefore, driving safety has become an urgent issue. The appropriateness of vehicle tire pressure is a key part of driving safety. When the tire pressure is too low, the rolling resistance of the tire increases, resulting in reduced maneuverability. When the high-speed cornering occurs, the tire may also come out of the rim and cause a serious accident, and the deformation of the tire increases, resulting in an increase in fuel consumption and an increase in environmental pollution; When the tire pressure is too high, the contact area between the tire and the ground is reduced, the grip is weakened, the slippage may be out of control during driving, and the high temperature between the driving causes the tire with excessive tire pressure to be easily blown, and on the other hand, the deformation of the tire The amount is reduced, the load of the vehicle suspension system is increased when the road is not smooth, and the maintenance cost of the vehicle is increased.

Therefore, there is a tire pressure gauge on the market, which allows the user to check the tire pressure with a tire pressure gauge before driving to ensure proper tire pressure. However, it is inconvenient to manually test each time before driving, so it is difficult to increase the ratio of tire pressure detection before driving.

Therefore, a tire pressure detector has appeared on the market, which can be directly installed in the nozzle of the wheel and located in the tire, and the tire pressure is monitored for a long time, and a warning signal is issued when the tire pressure is different. However, because such a tire pressure detector is installed on the wheel for a long time, and the wheel is inevitably in rainy weather, running water, or used in a humid climate, the moisture easily affects the stability of the tire pressure detector, resulting in Tide, failure, and even rust.

At present, the waterproof design of the tire pressure detector usually uses a filling rubber seal to insulate the moisture from the electronic components inside the tire pressure detector. In order to be waterproof, it also causes a problem that the weight of the tire pressure detector is greatly increased.

Therefore, the present invention provides a tire pressure detecting device comprising a casing, a waterproof gas permeable membrane and a wireless tire pressure detecting circuit, wherein the casing has a venting hole penetrating through the casing, and the waterproof gas permeable membrane is mounted on the vent hole. The waterproof and permeable membrane forms a closed accommodating space with the casing, and the wireless tire pressure detecting circuit is positioned in the closed accommodating space.

According to an embodiment of the present invention, the housing may include a bottom case and a cover case, and the cover case is airtightly coupled to the bottom case, and the bottom case and the cover case may be ultrasonically coupled.

According to still another embodiment of the present invention, the housing may further include a recess, the recess being located outside the vent hole, and the waterproof gas permeable membrane may be embedded in the recess.

With the waterproof gas permeable membrane, the air outside the casing can enter the closed accommodating space, and the water outside the casing cannot pass through the waterproof gas permeable membrane to protect the wireless tire pressure detecting circuit from moisture. At the same time, the weight of the waterproof and breathable membrane is much lighter than that of the filled rubber seal. Therefore, the tire pressure detecting device of the present invention can achieve light weight and is suitable for long-term installation on wheels, monitor tire pressure, and guard driving safety.

Please refer to FIG. 1 , which illustrates an embodiment of the present invention. An exploded view of the tire pressure detecting device. The housing 100 includes a housing 100, a waterproof and permeable membrane 200, and a wireless tire pressure detecting circuit 300. The housing 100 can include a bottom housing 110 and a cover 120. The housing 120 is airtightly coupled to the bottom housing during assembly. 110, the bottom case 110 has a venting hole 130 penetrating through the bottom case 110, and the waterproof permeable membrane 200 is mounted on the venting hole 130. After assembly, the waterproof permeable membrane 200 and the housing 100 form a closed accommodating space 400, and the wireless tire pressure detection is performed. The circuit 300 is positioned in the enclosed accommodating space 400. The wireless tire pressure detecting circuit 300 can include a detecting module 310 and a transmitting module 320. The detecting module 310 is electrically connected to the transmitting module 320. A battery 500 is disposed. The battery 500 is also positioned in the enclosed accommodating space 400. The battery 500 is electrically connected to the wireless tire pressure detecting circuit 300. The venting holes 130 are not limited to the bottom case 110 , and the venting holes 130 may be located in the cover case 120 , or the venting holes 130 may be simultaneously located in the bottom case 110 and the cover case 120 , and the venting holes 130 may pass through the case 100 .

Please refer to FIG. 2A, which shows an assembled view of FIG. 1 , in which the cover 120 is hermetically bonded to the bottom case 110, and the cover case 120 and the bottom case 110 can be ultrasonically coupled to make the finished product light in weight; The cover 120 and the bottom case 110 can also be adhesively bonded.

Please refer to FIG. 2B , which illustrates an assembled appearance according to another embodiment of the present invention. In addition to the above, a sealing ring 600 may be further included, and the sealing ring 600 is sandwiched between the bottom case 110 and the cover case 120 . The airtightness between the bottom case 110 and the cover case 120 is further enhanced.

Referring to FIG. 3 , an external view of the housing 100 of FIG. 1 assembled with the waterproof gas permeable membrane 200 is illustrated, wherein the waterproof gas permeable membrane 200 shields the vent hole 130 .

Referring to FIG. 4A, a cross-sectional view of the housing of FIG. 3 along section line 4-4 is illustrated. The waterproof gas permeable membrane 200 is adhesively bonded to the housing 100, and the waterproof gas permeable membrane 200 shields the venting holes 130.

Please refer to FIG. 4B , which illustrates a cross-sectional view of the housing 100 assembled with the waterproof gas permeable membrane 200 according to still another embodiment of the present invention. The housing 100 further includes a recess 140. The recess 140 is trapped in the housing 100. The recess 140 is located outside the vent hole 130, and the waterproof gas permeable membrane 200 is embedded in the recess 140. The recess 140 has a height difference H from the housing 100, and the waterproof gas permeable membrane 200 has a thickness T, and the thickness T can be less than or equal to the height difference H.

The waterproof gas permeable membrane 200 is not limited to be mounted on the outer side of the casing 100. The waterproof gas permeable membrane 200 can also be installed inside the casing 100, as long as the waterproof gas permeable membrane 200 can shield the venting holes 130 and form a closed accommodating space 400 together with the casing 100. Just fine. Therefore, the recess 140 is not limited to be disposed on the outer side or the inner side of the housing 100 as long as the recess 140 is trapped in the housing 100 and located outside the vent hole 130.

In the above-described tire pressure detecting device of the present invention, since the waterproof gas permeable membrane 200 and the casing 100 form a closed accommodating space 400, the air outside the casing 100 can enter and close through the vent hole 130 through the waterproof gas permeable membrane 200. The space 400 is accommodated, but the moisture outside the casing 100 cannot pass through the waterproof gas permeable membrane 200, so the moisture outside the casing 100 cannot enter the closed accommodating space 400, thereby protecting the wireless tire installed in the closed accommodating space 400. The pressure detecting circuit 300 is free from moisture and is protected from moisture and malfunction. After the air outside the casing 100 enters the closed accommodating space 400, the wireless tire pressure detecting circuit 300 located in the closed accommodating space 400 can detect and transmit the tire pressure signal; the wireless tire pressure detecting circuit 300 includes the detecting module. 310 and transmitting module 320, detecting The module 310 includes a pneumatic sensor (not shown) to detect the tire pressure, and the detecting module 310 transmits the measured tire pressure signal to the transmitting module 320. The transmitting module 310 encodes the tire pressure signal and transmits the same. An external receiver (not shown), the external receiver can be located on the vehicle dashboard or in the mobile device for the user to view the tire pressure signal or the abnormal tire pressure warning.

It can be seen from the above-mentioned embodiments of the present invention that the application of the present invention has the following advantages:

1. It has waterproof and breathable properties to protect internal electronic components from moisture, improve durability and reliability.

2. The bottom case 110 and the cover case 120 of the housing 100 can be ultrasonically coupled to greatly reduce the weight of the tire pressure detecting device.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Any one skilled in the art can make various changes and retouchings without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.

100‧‧‧shell

110‧‧‧ bottom case

120‧‧ ‧ shell

130‧‧‧ venting holes

140‧‧‧ recess

200‧‧‧Waterproof breathable membrane

300‧‧‧Wireless tire pressure detection circuit

310‧‧‧Detection module

320‧‧‧Transmission module

400‧‧‧Contained accommodating space

500‧‧‧Battery

600‧‧‧ sealing ring

H‧‧‧ height difference

T‧‧‧ thickness

The above and other objects, features, advantages and embodiments of the present invention will become more apparent and understood.

Fig. 2A is a view showing the assembled appearance of Fig. 1.

2B is a diagram showing the assembled appearance according to another embodiment of the present invention.

Fig. 3 is a perspective view showing the assembled of the casing and the waterproof gas permeable membrane of Fig. 1.

Figure 4A is a cross-sectional view of the housing of Figure 3 taken along section line 4-4.

4B is a cross-sectional view showing the assembled housing and the waterproof gas permeable membrane according to still another embodiment of the present invention.

100‧‧‧shell

110‧‧‧ bottom case

120‧‧ ‧ shell

130‧‧‧ venting holes

200‧‧‧Waterproof breathable membrane

300‧‧‧Wireless tire pressure detection circuit

320‧‧‧Transmission module

310‧‧‧Detection module

400‧‧‧Contained accommodating space

500‧‧‧Battery

Claims (10)

A tire pressure detecting device comprising: a casing having a venting hole, the venting hole penetrating the casing; a waterproof gas permeable membrane mounted to the venting hole, and the waterproof permeable membrane is formed with the casing a closed accommodating space; and a wireless tire pressure detecting circuit positioned in the closed accommodating space. The tire pressure detecting device of claim 1, wherein the housing further comprises: a bottom case; and a cover case, the cover case is hermetically joined to the bottom case. The tire pressure detecting device of claim 2, wherein the bottom case is ultrasonically coupled to the cover case. The tire pressure detecting device of claim 2, wherein the bottom case is adhesively bonded to the cover case. The tire pressure detecting device of claim 2, wherein the venting hole is located in the bottom case or the cover case. The tire pressure detecting device of claim 2, further comprising: a sealing ring positioned between the bottom case and the cover case by the clip. The tire pressure detecting device of claim 1, wherein the housing further comprises: a recess located outside the venting hole, the waterproof gas permeable membrane being embedded in the recess. The tire pressure detecting device of claim 7, wherein the recess has a height difference from the housing, and the waterproof gas permeable membrane has a thickness which is less than or equal to the height difference. The tire pressure detecting device of claim 1, wherein the waterproof gas permeable membrane is adhesively bonded to the housing. The tire pressure detecting device of claim 1, wherein the wireless tire pressure detecting circuit comprises: a detecting module for detecting a tire pressure; and a transmitting module electrically connected to the detecting module, The transmitting module transmits the tire pressure signal measured by the detecting side module to an external receiver.