TWI513605B - Tire pressure sensor - Google Patents

Description

Tire pressure sensor

A tire pressure sensor, especially a tire pressure sensor capable of updating a firmware.

The driving safety of the driver when driving on the road is the primary consideration, and the tire pressure on the tire has a very serious impact on the vehicle condition, which has a crucial influence on driving safety. Tires need to have normal tire pressure to make the vehicle run smoothly. Tire pressures that are too high or too low may cause puncture or broken tires, which seriously affect the stability of the vehicle and threaten the safety of life and property of passers-by. The importance of driving safety is self-evident. However, the conventional method of measuring the tire pressure needs to stop the vehicle before it can be carried out, and it is impossible to know the instantaneous change of the tire pressure of the vehicle during traveling. If the tire is abnormal during driving, the driver cannot immediately know and strain.

In order to detect the tire pressure in a simpler and more convenient way, the relevant manufacturers have developed various tire pressure detecting devices mounted on the tires, so that the driver can know the change of the tire pressure at any time. Among them, the tire-type tire pressure detector is directly installed in the tire, and has the advantages of accurate detection result, direct inflation and easy to be stolen. The Republic of China Patent Publication No. I332559, M405977, and M419917 are conventional tire-type tire pressure detectors having a detector body and a gas nozzle which is bored and fixed to the air holes of a wheel frame. The detector body is locked to the air nozzle by a screw or a connecting member such as a screw and a nut, and the condition of the tire is transmitted to the receiver on the vehicle by wireless transmission, so that the driver can monitor the condition of the tire. abnormal.

Since the conventional tire pressure detectors do not have uniform specifications, different manufacturers use different data formats; in addition, different models also have different optimum tire pressures, which are used for tire pressure detectors of different models. The settings are also different, so that the tire pressure detectors produced by different manufacturers or used between different models cannot be exchanged. In addition, the tire-type tire pressure detector is installed in a high-pressure and high-speed rotating tire, which is a very harsh working environment for the internal electronic components, and thus requires a high degree of gas. The tightness is caused by dustproof or moisture infiltration, which makes the tire pressure detector on the market mostly a seal structure that cannot be disassembled. Therefore, the conventional tire pressure detector cannot change the setting of the electronic device inside the sealed casing in a manner of updating the firmware to adapt to the use of different models, so that the applicable range of the tire pressure detector is limited. For the driver, when the vehicle is replaced, the old tire pressure detector cannot be used, and a new tire pressure detector must be purchased to cause additional expenses. For the manufacturer, the tire pressure sensor must first be produced. The electronic device is filled into the firmware and assembled with the outer casing. If several tire pressure detectors are to be introduced for several types of vehicles, it is necessary to have several production lines at the same time, so that the production cost is increased, and the outer casing cannot be disassembled after assembly. If there is a large fluctuation in the demand for different tire pressure detectors, this production method can not adjust the product line in time, which is easy to cause the manufacturer's inventory problem.

The object of the present invention is to solve the problem that the conventional tire pressure detector cannot be applied to different vehicle models by updating the firmware, resulting in limitation of the scope of use.

To achieve the above object, the present invention provides a tire pressure sensor that can be mounted on a wheel frame having an assembled through hole, the tire pressure sensor including a sensor body and a sensor body An air inlet nozzle and a set of nozzle fixing members connected to the sensor body and the air inlet nozzle. The sensor body includes a nozzle assembly hole, a tire pressure sensing module disposed in the sensor body to detect tire temperature and tire pressure to output a tire state information, and an electrical connection to the tire pressure The sensing module receives an updated connection port for updating the firmware information module to update the tire pressure sensing module; the air inlet nozzle includes a connecting portion inserted in the air nozzle assembly hole, and a connection The connecting section passes through the assembled through hole and extends in an out-of-frame direction for the user to connect the intake section of the input gas.

In one embodiment, the update port includes at least one through hole formed in the body of the sensor, and at least one pair of lead posts disposed on the through hole and electrically connected to the tire pressure sensing module. One end of the lead post is connected to the sensor body and the other end is inserted into the through hole.

In one embodiment, the tire pressure sensing module includes a control module having a sensing area, the sensor body is provided with a pair of air inlet portions that should be opened by the sensing area, and a gas inlet portion is disposed at the air inlet portion. And a gasket between the sensing regions.

In an embodiment, the connecting portion further has an assembly hole that is formed to be assembled with the air nozzle fixing hole toward the air nozzle assembly hole, and the assembly through hole that engages the wheel frame to receive the air inlet. The mouth is fixed to the positioning groove on the wheel frame.

In one embodiment, the sensor body further has an electromagnetic wave transmitting component electrically connected to the tire pressure sensing module to output the tire state information.

In one embodiment, the electromagnetic wave transmitting element has a pair of perforations that are open to the nozzle assembly opening for the nozzle holder to pass through.

In one embodiment, the sensor body has a first housing having a receiving slot for inserting the tire pressure sensing module, and a first housing is tightly closed to close the receiving slot. The second housing.

In one embodiment, the sensor body has at least one support block disposed on a surface facing the wheel frame and abutting against the wheel frame.

The invention provides an update port electrically connected to the tire pressure sensing module on the sensor body, so that the user can directly transmit an updated firmware data to the tire pressure through the update port. The sensing module utilizes the method of updating the firmware to make the present invention applicable to different vehicle models, thereby expanding the scope of use thereof. In addition, since the sensor body is not required to be disassembled when the firmware is updated, the present invention maintains the airtightness at the time of appearance. In this way, the consumer can replace a plurality of conventional tire pressure detectors with a single invention, and the manufacturer can also assemble the tire pressure detectors and then fill the firmware at any time, in addition to reducing the production cost. Real-time adjustment of raw product items according to market needs, to achieve maximum benefits.

1‧‧‧ wheel frame

11‧‧‧Assemble through hole

12‧‧‧Fracture

13‧‧‧ Connection section

2‧‧‧Sensor body

21‧‧‧ first housing

211‧‧‧ accommodating slots

212‧‧‧Transmission hole

213‧‧‧Support block

214‧‧‧Intake Department

22‧‧‧ second housing

23‧‧‧ tire pressure sensing module

231‧‧‧ circuit board

232‧‧‧Control Module

233‧‧‧Sensor unit

234‧‧‧Sensing area

24‧‧‧Battery

25‧‧‧Update link埠

251‧‧‧guide post

252‧‧‧through hole

26‧‧‧Air nozzle assembly hole

27‧‧‧Electromagnetic wave transmission components

271‧‧‧Perforation

272‧‧‧Transfer pins

28‧‧‧Washers

3‧‧‧Intake nozzle

31‧‧‧ Connection section

311‧‧‧Assembled holes

312‧‧‧ positioning slot

313‧‧‧Exhaust through hole

32‧‧‧Air intake section

4‧‧‧ nozzle assembly

Fig. 1 is an exploded perspective view showing the tire pressure sensor of the present invention.

2 is a structural exploded view of another perspective of the tire pressure sensor of the present invention.

3 is a cross-sectional view of the intake air nozzle of the tire pressure sensor of the present invention.

4 is a cross-sectional view of the updated port of the tire pressure sensor of the present invention.

FIG. 5 is a schematic view showing the state of use of the tire pressure sensor of the present invention.

The detailed description and technical contents of the present invention will now be described as follows: Please refer to FIG. 1 , FIG. 2 and FIG. 5 , which are respectively an exploded view of the structure of the present invention, an exploded view of another perspective view, and a schematic view of the use state. As shown in the figure, the present invention is a tire pressure sensor which can be installed. On a wheel frame 1 of a tire (not shown), each side of the wheel frame 1 has a crease section 12 that is fitted to a bead of the tire (not shown), and a connection is made. A connecting section 13 of the pleat section 12 and an assembled through hole 11 disposed between the crease section 12 and the connecting section 13. The tire pressure sensor includes a sensor body 2, an air inlet nozzle 3 connected to the sensor body 2, and a nozzle fixed to the sensor body 2 and the air inlet nozzle 3. Item 4. The sensor body 2 includes a tire pressure sensing module 23 disposed inside the sensor body 2, and at least one battery 24 that supplies power to the tire pressure sensing module 23 is electrically connected to the tire. The update connection port 25 of the pressure sensing module 23 (please refer to FIG. 4), and a nozzle assembly hole 26 disposed outside the sensor body 2. The tire pressure sensing module 23 includes a circuit board 231 and a control module 232 disposed on the circuit board 231. The control module 232 has a sensing unit 233 and internally stores a sense of the tire pressure. The test module 23 operates and has a predetermined condition of the firmware. In more detail, the preset condition is the most suitable tire temperature, tire pressure, etc. under the normal condition that the model body of the sensor body 2 is installed. The data (hereinafter referred to as the safety range) may have different safety ranges between different models, so different models may have different preset conditions. In addition, the control module 232 has a sensing area 234 connected to the sensing element 233. The sensor body 2 also has a pair of air inlets 214 that should be opened by the sensing area 234, and a pair of air intakes should be A washer 28 is disposed at a position of the portion 214 and the sensing portion 234 , and the washer 28 is clamped by the sensor body 2 and the tire pressure sensing module 23 . When the tire pressure sensing module 23 is operated, the gas in the tire enters the interior of the sensor body 2 through the air inlet portion 214, and is restricted by the gasket 28, and directly leads to the sensing region 234, so that the gas is sensed. The measuring unit 233 can detect the tire temperature, the tire pressure and the like in the tire through the sensing area 234 to generate a tire state information and transmit it to the control module 232. The control module 232 displays the tire status information. Comparing with the preset condition in the firmware to determine whether the state of the tire is abnormal, if an abnormality is found, a warning signal is sent, and the tire state information and the warning signal are wirelessly transmitted to a monitoring device. (not shown). The monitoring device can be arranged near the driver's seat to facilitate the driver to view the place, and can be integrated with the vehicle manufacturer and displayed directly on the vehicle's dashboard, so that the driver can know whether the tire is in an abnormal state at any time. In addition, the manufacturer can develop firmware with different preset conditions according to the safety range of different models. When the vehicle type is changed, the tire pressure sensor can be matched by updating the firmware. The needs of different models. For example, when the tire pressure sensor originally used for the passenger car needs to be modified to the tow truck, the tire pressure sensor can be first removed from the wheel frame of the passenger car and the firmware is updated. The firmware of the original passenger car in the tire pressure sensor is changed to the firmware of the pallet truck, and the updated tire pressure sensor is mounted on the wheel frame of the pallet truck. The tire pressure sensor already has the standard status data of the pallet truck and can meet the needs of the pallet truck.

In the above embodiment, the sensor body 2 is a single housing. In the preferred embodiment of the present invention, the sensor body 2 has a first housing 21 and a first engagement with the first housing 21. Two housings 22. The first housing 21 has an opening 211 facing the connecting section 13 to accommodate the tire pressure sensing module 23 (as shown in FIG. 2 and FIG. 3 ). The first housing 21 is engaged with the first housing 21 such that the receiving slot 211 is covered by the second housing 22 to form a sealed space, so that the tire pressure sensing module 23 and the battery 24 are confined therein. In order to ensure that the accommodating groove 211 is in a completely sealed state when the second housing 22 is engaged with the first housing 21, the second housing 22 and the first housing 21 are in contact with each other. An adhesive (not shown) is applied to ensure that the dust or moisture generated by the tire cannot enter the accommodating groove 211, which affects the durability of the tire pressure sensing module 23. Further, the nozzle assembly hole 26 is provided on a surface of the first casing 21 opposite to the opening direction of the accommodating groove 211.

The update port 25 and the tire pressure sensing module 23 of the present invention can be connected to an external electronic device (not shown) to receive an updated firmware data. The update port 25 can be implemented in a plurality of different manners. The update port 25 of the first embodiment includes at least one terminal (not shown) disposed on the control unit 232 or the circuit board 231, and A pair of through holes 252 are formed in the sensor body 2 so that the external electronic device can be connected to the terminal through the through hole 252. Or, as in the second embodiment, the terminal of the update port 25 is replaced by at least one lead post 251 electrically connected to the circuit board 231 and penetrating the through hole 252 to the sensor body. As an example of a single housing, the through hole 252 can be formed on the single housing, and the guiding post 251 is disposed inside the sensor body 2 and connects the through hole 252 and the circuit board 231. . Or, as shown in FIG. 1 and FIG. 2, in the preferred embodiment of the present invention, the through hole 252 is disposed on the second casing 22, and one end of the guiding post 251 can be fixed in the mold. The accommodating slot 211 extends through the circuit board 231 and extends into the through hole 252. Alternatively, one end of the guiding post 251 can be manually inserted into the through hole 252 and connected at both ends. Fixed by an adhesive (not shown), neither of which affects the work of the update port 25 Yes, and the assembled state is the same (as shown in Figure 4). Although the through hole 252 of the preferred embodiment of the present invention is formed on the second housing 22, it should not be limited thereto. If the firmware of the tire pressure sensor of the present invention is to be renewed, the manufacturer can connect the external electronic device to the guiding post 251 extending into the through hole 252 and electrically connected to the circuit board 231 to transmit the The connection post 251 is connected to the control module 232 of the tire pressure sensing module 23, and the updated firmware information is input to update the firmware stored in the control module 232. By means of the setting of the update port 25, the manufacturer can directly perform firmware update on the tire pressure sensing module 23 through the update port 25 without disassembling the sensor body 2, which is simple. The approach increases the application level of the invention.

Referring to FIG. 1 and FIG. 3, the air inlet nozzle 3 can be made of a metal material, has a connecting portion 31 corresponding to the nozzle assembly hole 26, and an air inlet portion connected to the connecting portion 31. 32. The connecting portion 31 has an assembly hole 311 opened toward the air nozzle assembly hole 26, and surrounds the connecting portion 31 and is engaged with the assembly through hole 11 to fix the air inlet nozzle 3 to the wheel frame 1 The upper positioning groove 312 and an air outlet hole 313 are disposed between the assembly hole 311 and the positioning groove 312. Moreover, the nozzle assembly hole 26 is provided on a surface of the first casing 21 opposite to the opening direction of the accommodating groove 211. When the assembly is assembled, the connecting portion 31 is inserted into the nozzle assembly hole 26 to make the two contact each other, and a nozzle holder 4 is inserted into the nozzle assembly hole 26 in the direction of the connecting portion 31, and is connected thereto. The assembly holes 311 of the segment 31 are assembled to allow the air inlet nozzle 3 to be firmly connected to the sensor body 2. In this embodiment, the nozzle holder 4 can be a metal-made screw, and the assembly hole 311 is provided with a thread corresponding to the screw, so that the nozzle holder 4 and the assembly hole 311 are screwed. The connection manner is firmly combined, but the manner in which the nozzle holder 4 is connected to the assembly hole 311 is not limited to this embodiment. The air inlet section 32 extends through the assembly through hole 11 of the wheel frame 1 and protrudes outside the wheel frame 1 to receive an external gas output from an air pump (not shown) for passing gas through the gas The nozzle 3 flows out from the air outlet through hole 313 located inside the wheel frame 1 to perform an inflation operation.

As shown in Fig. 1, in the preferred embodiment of the present invention, the sensor body 2 further has an electromagnetic wave transmitting member 27 which is made of a metal material. The electromagnetic wave transmitting element 27 is disposed outside the first casing 21 and connected to the nozzle assembly hole 26, and has a pair of through holes 271 and a transmission pin 272 which are opened by the nozzle assembly hole 26. In addition, the first housing 21 defines a transmission hole 212 at a position corresponding to the bottom of the receiving groove 211 corresponding to the transmission pin 272, so that the transmission pin 272 can pass through the transmission hole 212. The accommodating groove 211 is connected to the circuit board 231, and the electromagnetic wave transmitting element 27 is electrically connected to the tire pressure sensing module 23. The nozzle holder 4 penetrates the through hole 271 of the electromagnetic wave transmitting element 27 and the nozzle assembly hole 26 to be screwed into the assembly hole 311, so that the electromagnetic wave transmission element 27 is clamped to the nozzle holder 4 and The nozzles are assembled between the holes 26 (as shown in Figure 3). The air nozzle fixing member 4 and the air inlet nozzle 3 can be made of metal, and the tire pressure sensing module 23 can be connected to the air inlet nozzle 3 and the air nozzle fixing member 4 and the air inlet nozzle 3 An electrical connection is formed to transmit the tire state information output by the control module 232 to the monitoring device by using the air inlet nozzle 3 as an antenna for wireless transmission. Since the intake section 32 of the intake air nozzle 3 is exposed to the wheel frame 1, there is less shielding on the wireless transmission path, so that a better transmission effect can be obtained. Moreover, a portion of the port of the transmission hole 212 that is in contact with the transmission pin 292 can also be coated with an adhesive (not shown) to achieve a better sealing effect.

Referring to FIG. 5 , the present invention is disposed on the wheel frame 1 . The air inlet section 32 of the air inlet nozzle 3 passes through the assembly through hole 11 , and the positioning slot 312 of the connecting section 31 is engaged with the positioning slot 312 . On the wheel frame 1, the air inlet nozzle 31 is fixed to the wheel frame 1 without falling, and then the sensor body 2 is connected to the air inlet nozzle 3, and the air nozzle fixing member 4 is attached. The nozzle assembly hole 26 is bored to assemble the sensor body 2 and the air inlet nozzle 3. In addition, the surface of the first housing 21 facing the connecting portion 13 is further provided with at least one supporting block 213 extending toward the connecting portion 13 , and the sensor body 2 is abutted by the supporting block 213 The connecting portion 13 can prevent the sensor body 2 from directly attaching to the connecting portion 13 and receiving the strong vibration of the wheel frame 1 to accelerate the damage of the component and have a buffering effect.

In summary, the tire pressure sensor of the present invention provides an updated connection port electrically connected to the tire pressure sensing module on the sensor body, so that the user can not disassemble the feeling. In the case where the detector body is kept airtight, the updated firmware is directly transmitted to the tire pressure sensing module, and the firmware stored therein is updated to make the tire pressure sense The detector can meet the needs of use under different use conditions. In this way, consumers do not have to purchase a variety of different tire pressure detectors for different needs. Manufacturers can first assemble the tire pressure detectors and then inject them into the firmware. In addition to reducing production costs, they can also The market needs to adjust the raw product items to achieve maximum benefits.

2‧‧‧Sensor body

21‧‧‧ first housing

212‧‧‧Transmission hole

213‧‧‧Support block

214‧‧‧Intake Department

22‧‧‧ second housing

23‧‧‧ tire pressure sensing module

231‧‧‧ circuit board

232‧‧‧Control Module

233‧‧‧Sensor unit

234‧‧‧Sensing area

24‧‧‧Battery

251‧‧‧guide post

252‧‧‧through hole

26‧‧‧Air nozzle assembly hole

27‧‧‧Electromagnetic wave transmission components

271‧‧‧Perforation

272‧‧‧Transfer pins

28‧‧‧Washers

3‧‧‧Intake nozzle

31‧‧‧ Connection section

311‧‧‧Assembled holes

312‧‧‧ positioning slot

313‧‧‧Exhaust through hole

32‧‧‧Air intake section

4‧‧‧ nozzle assembly

Claims (7)

A tire pressure sensor is mounted on a wheel frame, the wheel frame includes an assembled through hole, the tire pressure sensor includes: a sensor body, including a nozzle assembly hole, and a sensing device a tire pressure sensing module that detects tire pressure and outputs a tire state information, and an updated connection that is electrically connected to the tire pressure sensing module to receive an update of the tire pressure sensing module Updating the firmware file, the update port includes at least one through hole formed in the body of the sensor, and at least one pair of guiding posts disposed on the through hole and electrically connected to the tire pressure sensing module, One end of the guiding post is connected to the sensor body and the other end is inserted into the through hole; an air inlet nozzle includes a connecting section inserted in the air nozzle assembling hole, and a connecting section is connected And inserting the assembled through hole toward an out-of-frame direction for the user to connect the intake gas to the intake section; and a nozzle fixing member, the nozzle assembly hole is formed to assemble the intake nozzle and the nozzle Assemble the holes. The tire pressure sensor module of claim 1, wherein the tire pressure sensing module comprises a control module having a sensing area, and the sensor body is provided with a pair of sensing areas An air inlet portion and a gasket disposed between the air inlet portion and the sensing region. The tire pressure sensor of claim 1, wherein the connecting section further has an assembly hole that opens to the air nozzle assembly hole and is assembled with the air nozzle fixing member, and the wheel frame is engaged The through hole is assembled to fix the intake air nozzle to a positioning groove on the wheel frame. The tire pressure sensor of claim 1, wherein the sensor body further has an electromagnetic wave transmitting element electrically connected to the tire pressure sensing module to output the tire state information. The tire pressure sensor according to claim 4, wherein the electromagnetic wave transmitting member has a pair of through holes that are opened by the nozzle assembly hole for the nozzle holder to pass through. The tire pressure sensor of claim 1, wherein the sensor body has a first housing including a receiving groove for inserting the tire pressure sensing module, and a first A casing is tightly closed to close the second casing of the accommodating groove. The tire pressure sensor of claim 1, wherein the sensor body has at least one support block disposed on a surface facing the wheel frame and abutting against the wheel frame.