WO2010099676A1 - External tyre pressure information transmitter - Google Patents

Abstract

An external tyre pressure information transmitter (200) includes a transmitter electronic module (220), a fixing seat (210), a valve mouth interface (201), and a gas pipe (202). The transmitter electronic module (220) provided with a gas inlet can be used to measure and transmit tyre pressure. The fixing seat (210) comprises an installing part (211) for installing the transmitter electronic module (220), and two fixing circles (212, 213) adaptable to be fixed on two adjacent bolts of a wheel felloe. The valve mouth interface (201) can be used to combine with the tyre valve mouth. The gas pipe (202) connects the valve mouth interface (201) with the transmitter electronic module (220) so as to import gas into the gas inlet of the transmitter electronic module (220) from the valve mouth interface (201). Wherein, the gas pipe (202) may rotate relative to the valve mouth interface (201) and the transmitter electronic module (220).

Description

 External tire pressure information transmitter

 The present invention relates to a tire pressure monitoring system for an automobile, and more particularly to an external tire pressure information transmitter. Background technique

 Air pressure is the most critical parameter of the tire. If the tire pressure is too high or too low, it will increase the fuel consumption per kilometer and reduce the life of the tire. Figures 1A and 1B show the relationship between air pressure and tire life and fuel consumption, respectively. Tire pressure is less than 25% of normal, tire life is reduced to 60%, and fuel consumption is increased by 3%. In addition, the size of the tire pressure directly affects the safety of the car. Therefore, it is necessary to install electronic safety sensing products for tires to monitor tire pressure in real time.

 At present, there are two main types of tires, one is a tube tire and the other is a tubeless tire (vacuum tire). For the development of trucks, the use of tubeless tires is a trend. However, among the trucks still in use, trucks with inner tubes occupy a larger proportion than trucks without inner tubes. Trucks with inner tubes also require tire pressure information for each tire in order to maximize the safety and benefits of transportation.

 The tire pressure information transmitter of the traditional tire pressure monitoring system (TPMS) is built-in, that is, it is installed in the tire, but the tire removal of the truck is inconvenient, which causes great difficulty in post-production installation. Also, this built-in tire pressure transmitter cannot be used on trucks with inner tubes.

 To this end, the prior art proposes an external tire pressure transmitter.

 As shown in FIG. 2, the Chinese patent ZL200520063014.4 discloses a conventional external transmitter. The outer casing 11 of the transmitter 10 has a cap structure and has a threaded interface 12, which is fired by screwing. The screw is fixed on the valve 20.

 This external transmitter has two main disadvantages:

 1. Since the entire transmitter is screwed on the valve, the weight of the transmitter is absorbed by the valve. However, when the car is driving at high speed, the tire rotates at a high speed. When the car speed is 100Km/h, the transmitter is centrifuged. The acceleration is about 200g (gravity acceleration;). The valve will be deformed by a large force, which will greatly reduce the safety of the entire tire.

2. This external transmitter is easy to remove and therefore easy to steal. Due to the expensive inside the transmitter The chip, so the cost of the transmitter is relatively high. The high risk of theft has made this product difficult to promote. Summary of the invention

 The technical problem to be solved by the present invention is to provide an external tire pressure information transmitter, which has the characteristics of being firmly fixed and not easily damaged.

 The technical solution adopted by the present invention to solve the above technical problems is to provide an external tire pressure information transmitter comprising an emitter electronic module, a fixing base, a valve joint, and a gas pipe. A transmitter electronics module is used to detect and emit tire pressure, and the transmitter module has a gas inlet. The mount has a mounting portion for mounting the transmitter electronics module and two retaining rings adapted to be secured to two adjacent screws on the rim of the tire. The valve connector is used to engage the valve of the tire. A gas pipe connects the valve connector and the transmitter electronics module to introduce gas from the valve connector to a gas inlet of the transmitter electronics module. Wherein the valve connector and the air pipe, and the transmitter electronic module and the air pipe are relatively rotatable.

 In an embodiment of the invention, the angle between the valve connector and the air tube, and between the transmitter electronics module and the air tube, is 360 degrees.

 In an embodiment of the invention, the material of the gas pipe is polytetrafluoroethylene.

 In an embodiment of the invention, the air pipe is connected to the gas inlet of the transmitter electronic module by a first high voltage connector, wherein the air pipe and the first high voltage connector are riveted by a first riveting sleeve.

 In an embodiment of the invention, the air pipe is coupled to the valve connector by a second high pressure joint, wherein the air pipe and the second high pressure joint are riveted by a second riveting sleeve.

 In an embodiment of the invention, the mounting portion of the fixing seat is located between the two fixing rings.

 In an embodiment of the present invention, the external tire pressure transmitter further includes a protective cover disposed at a mounting portion of the fixing base to cover the transmitter electronic module, wherein an antenna of the transmitter electronic module is exposed Outside the protective cover.

 In an embodiment of the invention, the antenna of the transmitter electronic module extends outwardly along the air tube to pass through the protective cover.

The external tire pressure information transmitter of the present invention has the following significant advantages as compared with the prior art by adopting the above technical solutions: 1. The nut on the wheel rim is fixed on the rim. Since the nut on the rim is mounted on the rim by a professional wind gun, the pre-tightening force is very large, and the fixing is firm, which does not cause damage to the valve; After that, it is difficult to disassemble without professional equipment, and it has the function of anti-theft;

 2. The valve joint and the transmitter housing are free to rotate, which can adapt to different rims and be installed on different rims, which increases the versatility of the transmitter and is easy to install. BRIEF abstract

 Features and capabilities of the present invention are further described by the following examples and the accompanying drawings.

 Fig. 1A shows a relationship between tire air pressure and tire life.

 Fig. 1B shows a relationship between tire air pressure and fuel consumption and resistance.

 Figure 2 shows a block diagram of a prior art external tire pressure information transmitter.

 Fig. 3 is a view showing the assembled structure of an external tire pressure information transmitter according to an embodiment of the present invention.

 Fig. 4 is an exploded perspective view showing an external tire pressure information transmitter according to an embodiment of the present invention. Figure 5 is a cross-sectional view showing an external tire pressure information transmitter in accordance with an embodiment of the present invention.

 Fig. 6 shows an installation state of an external tire pressure information transmitter according to an embodiment of the present invention.

 Fig. 7 is a partially enlarged view showing the mounted state shown in Fig. 6. BEST MODE FOR CARRYING OUT THE INVENTION

 3-5 respectively show an assembled structural view, an exploded view and a cross-sectional view of an external tire pressure transmitter according to an embodiment of the present invention. Referring to Figures 3-5, the external tire pressure information transmitter 200 of the present embodiment is shown. The utility model comprises a fixing base 210, a transmitter electronic module 220, a protective cover 230, a valve joint 201 and a gas pipe 202.

 Transmitter electronics module 220 is a functional component of the present transmitter for detecting and transmitting tire pressure. The transmitter electronics module 220 is provided with electronics within the housing that perform these functions.

The mount 210 is used to carry the transmitter electronics module 220 and secure the entire transmitter 200 to the tire of the vehicle. In the present embodiment, the fixing base 210 is designed to include a mounting portion 21 1 and two fixing rings 212 and 213. The transmitter electronic module 220 is fixed to the mounting portion 211. The two retaining rings 212 and 213 can be sleeved on two adjacent screws on the rim of the automobile tire and fixed by a nut. In one embodiment The two fixing rings respectively extend from both sides of the mounting portion 211 and are curved to fit the relative positions of two adjacent screws on the rim. At the same time, the size of the retaining ring can be left with a certain margin to accommodate different screws. Referring to Figures 6 and 7, when the transmitter 200 is mounted on the rim 301 of the vehicle, the two retaining rings 212, 213 are mounted to two adjacent screws 302a, 302b and secured by nuts 303a, 303b, and the mounting portion 21 1 and the transmitter electronics module 220 mounted thereon are located in the screw gap between the retaining rings.

 In a preferred embodiment, the metal module 220 is mounted on the outside of the transmitter electronic module 220 to prevent damage to the plastic casing of the transmitter electronic module 220 under severe road conditions, and to better protect the electronic components in the housing. . The protective cover 230 is connected to the mounting portion 211 of the mount by a plurality of rivets 231. In this example, the antenna of the transmitter electronics module 220 needs to be exposed to the metal shield 230 to avoid signal degradation due to electromagnetic shielding of the metal shield. More preferably, as shown in Figure 4, the antenna 221 extends outwardly along the air tube 202 that is coupled to the transmitter electronics module and can be secured to the air tube 202 by gluing or tightening.

 The transmitter electronic module 220 has a gas inlet connected to one end of the gas pipe 202 through a first high pressure joint 203. In an embodiment, the first high pressure joint 203 can be riveted to the gas tube 202 by a first rivet sleeve 204. The other end of the air tube 202 is coupled to a second high pressure connector 205 on the valve connector 201. Similarly, in one embodiment, the second high pressure joint 205 can be riveted to the gas tube 202 by a second rivet sleeve 206. Referring to Fig. 7, when the transmitter 200 is fixed to the rim 301 of the tire, the valve joint 201 can be coupled with the valve 304 of the tire. At this time, the valve joint 201 can open the valve 304 through a structure such as a thimble, and the high-pressure gas in the tire 300 can pass through the gas passage of the valve joint 201, the second high-pressure joint 205, the gas pipe 202, and the first high-pressure joint 203. The gas inlet of the transmitter electronics module 220 is introduced for the transmitter electronics module 220 to perform air pressure detection.

In a preferred embodiment, referring to Figure 5, the connection between the valve joint 201 and the air tube 202 allows for relatively free rotation therebetween, with an angle of rotation of up to 360 degrees. Similarly, the transmitter electronics module 220 can also rotate relatively freely between the air tube 202 and the angle of rotation can be up to 360 degrees. The material of the gas pipe 202 is polytetrafluoroethylene (polytetrafluoroethylene, hereinafter referred to as PTFE), and the function of the gas and the freely rotatable function is achieved by the easy deformation and self-lubricating properties of the polytetrafluoroethylene. This freely rotatable function is very advantageous for the installation of the transmitter. Referring to FIG. 7, when the transmitter is fixed between two adjacent screws on the rim of the tire through the fixing base 210, the angles of the air pipe 202 and the valve joint 201 are freely adjusted, so that the valve joint 201 is connected to the valve 304. The installation is easy. This In addition, this free-rotation function also allows the transmitter to be applied to a variety of rims with varying positions of the screw and the valve, increasing the versatility of the transmitter.

 In summary, the external tire pressure information transmitter of the present invention has the following advantages over the current external transmitter:

 1. The nut on the wheel rim is fixed on the rim. Since the nut on the rim is mounted on the rim by using a professional wind gun, the pre-tightening force is very large and fixed firmly, which does not cause damage to the valve; After installation, it is difficult to disassemble without professional equipment, and it has the function of anti-theft;

 2, the valve joint and the transmitter shell can be freely rotated, which can adapt to a variety of different rims, installed on different rims, increasing the versatility of the transmitter, and easy to install;

 3. A metal protective cover is installed on the outer casing of the transmitter to prevent damage to the plastic outer casing under the bad road conditions, and better protect the transmitter; at the same time, the external antenna makes the transmitted signal stronger, and the metal protective cover is avoided. Shielding effect.

Claims

Rights request 1. An external tire pressure information transmitter, comprising:  a transmitter electronic module for detecting and transmitting tire pressure, the transmitter module having a gas inlet;  a fixing base having a mounting portion and two fixing rings for mounting the transmitter electronic module, the two fixing rings being adapted to be fixed on two adjacent screws on the rim of the tire;  a valve joint for coupling with a tire valve; and  An air pipe connecting the valve connector and the transmitter electronic module to introduce a gas from the valve connector to a gas inlet of the transmitter electronic module;  Wherein, between the valve connector and the air pipe, and between the transmitter electronic module and the air pipe are relatively rotatable.  2. The external tire pressure information transmitter according to claim 1, wherein an angle between the valve connector and the air pipe, and between the transmitter electronic module and the air pipe is 360 degrees. .  The external tire pressure information transmitter according to claim 1 or 2, wherein the material of the gas pipe is polytetrafluoroethylene.  4. The external tire pressure information transmitter according to claim 1, wherein the air pipe is connected to a gas inlet of the transmitter electronic module by a first high voltage connector, wherein the air pipe and the first high voltage connector pass A first riveting sleeve is riveted.  5. The external tire pressure information transmitter according to claim 1, wherein the air pipe is connected to the valve joint by a second high pressure joint, wherein the air pipe and the second high pressure joint pass a second riveting Set of riveting.  6. The external tire pressure information transmitter of claim 1, wherein the mounting portion of the mount is located between the two retaining rings.  7. The external tire pressure information transmitter according to claim 1, further comprising a protective cover disposed at a mounting portion of the fixed seat to cover the transmitter electronic module, wherein the transmitter electronic module The antenna is exposed outside the protective cover.  8. The external tire pressure information transmitter of claim 7 wherein the antenna of the transmitter electronics module extends outwardly along the air tube.