TW201938407A - Tire pressure detector with center of gravity shift - Google Patents

Abstract

A tire pressure detector with center of gravity shift is applied to a wheel having a rim and a tire with an air pressure spaced formed therebetween and an air tap connected with the pressure space. The tire pressure detector includes a main body and a detection module. The main body is movable disposed in the air pressure space and provided with a housing space, a geometric center, and a gravity center, wherein the position of the geometric center is different from the gravity center. The detection module is disposed in the housing space for detecting the air pressure in the air pressure space. Therefore, the stability of the main body is maintained, such that the transmission antenna permanently faces a fixed direction for keeping a stable strength of the signal. Also, the present invention is easily installed without additional tools.

Description

Tire pressure detector with center of gravity shift

The invention relates to a tire pressure detection related field for a wheel, and more particularly to a tire pressure detector having a center of gravity shift.

Press, the tire pressure detection system is an electronic system installed on the wheel to detect whether the air pressure of the tire is sufficient. This system will detect in real time and let the driver drive with the instrument, digital display, or simply with a signal or sound. People are aware of changes in tire pressure to reduce traffic accidents caused by excessive or insufficient tire pressure.

The tire pressure detection system can be divided into indirect and direct based on the operation mode. Among them, the indirect tire pressure detection system does not directly detect the tire pressure of the tire, but detects the speed of the wheel. If the system detects that the speed of one wheel is too different from the speed of other wheels, there may be a tire. If the pressure is abnormal, the driver will be reminded. However, the indirect tire pressure detection system cannot provide the driver with the actual tire pressure value.

In addition, the direct tire pressure detection system has a sensor with a signal transmitting function, which can provide the actual tire pressure value of the driver's wheel. Among them, there are two types of tires: extra-tire and intra-tire. The external sensor is mounted on the wheel nozzle and can be easily installed by the owner. However, because the sensor itself has a weight, locking the valve on the valve will cause the wheel mass to be unevenly distributed, affecting the wheel balance, and filling the gas. When the sensor needs to be disassembled, there is a risk of damaging the sensor.

Moreover, in the state where the rubber-type gas nozzle is combined with the tire sensor, there will be a shaking phenomenon when the vehicle is traveling, and the rubber body of the rubber valve may be broken for a long time. In addition, the tire-type sensor is installed in the rim of the wheel, and the tire needs to be disassembled. Due to the generally fixed tire pressure detector, the air valve needs to be locked on the rim and installed in the installation. Often, due to the careless construction of the technician, the tire cover or the tool that disassembles the tire directly hits the gas nozzle or the sensor, causing the gas nozzle to break or the sensor to be damaged, resulting in extra costs to the business.

In order to solve the above problem, the present invention provides a tire pressure detector with a center of gravity shift. When the wheel is traveling and the body moves inside the tire, the mass center of gravity of the body is used to offset the geometric center of the shape, so that the body can maintain balance and stability, which is not easy. Roll with the wheel at will; by this, the transmission effect of the wireless transmission unit is stable, and it can be installed without using any tools to achieve convenient installation.

An embodiment of the present invention provides a tire pressure detector having a center of gravity shift, which is used for a wheel. The wheel has a rim and a tire sleeved on the rim. An air pressure space is formed between the tire and the rim. The rim is provided with an air nozzle that communicates with the air pressure space. The tire pressure detector includes: a body, which is movably disposed in the air pressure space, and an accommodation space in the body. The body has a geometric center of shape and a center of mass. The position of the geometric center is different from the position of the center of mass, the center of mass is between the geometric center of the shape and the outer edge of the body; and a detection module is located in the accommodation space, and the detection modules have a sense of mutual coupling. A measurement unit, a central processing unit, a wireless transmission unit, and a power supply unit. The sensing unit is used to detect the gas pressure in the air pressure space and generate a pressure signal. The central processing unit receives the pressure signal and transmits the pressure signal wirelessly. The transmission unit transmits the pressure signal wirelessly outward.

Based on the above, the present invention places the body provided with the detection module in the air pressure space. When the wheel travels, the center of mass of the body is offset from the geometric center of the shape. Therefore, the body can be kept in a balanced and stable state, avoiding the body to follow The wheels rotate and roll arbitrarily, causing damage to the body.

And during the rotation of the body, the gas pressure in the air pressure space is detected by the detection module, so it does not need to be additionally fixed on the wheel, and the convenience of quick and easy installation is achieved.

Furthermore, the tire pressure detector of the present invention only needs to be placed in the air pressure space between the tire and the rim, and it is not necessary to match the wheel specifications or the position of the air valve. When the conventional sensor is installed, it is easy to cause the sensor or The problem of air nozzle damage; therefore, the present invention is applicable to any wheel and is not limited by the specifications of models and appearances, thereby increasing the scope of use of the present invention.

In order to facilitate the description of the central idea of the present invention in the above-mentioned summary of content, specific embodiments are described below. Various objects in the embodiments are depicted in proportions, sizes, deformations, or displacements suitable for illustration, rather than in proportion to actual elements.

As used herein, the singular forms "a", "an" and "the" include plural forms unless the context clearly indicates otherwise. Furthermore, it should be understood that when used in this specification, the terms "including" and / or "comprising" designate the presence of stated features, entities, modules, and / or units, but do not preclude the presence or addition of one or more other features, Body, module and / or unit.

When an element is referred to as being "on" or "on" another element, or an element is "connected", "coupled", or "connected" to another element, it can be directly disposed, coupled, connected, or Connected to another element or intervening elements are described together.

Please refer to FIG. 1 to FIG. 9. The present invention provides a tire pressure detector 100 having a center of gravity shift, which is used for one wheel 1 of a vehicle. The vehicle can be one of a locomotive or an automobile. The vehicle is a car. The wheel 1 has a rim 2 and a tire 3 sleeved on the rim 2. The rim 2 has an outer surface 4 and an outer periphery 5. The outer surface 4 faces one end of the rotation axis of the wheel 1. The outer periphery 5 surrounds the wheel 1. The rotation axis is set. The tire 3 has an outer tread 6 and an inner tread 7. Among them, the inner tread 7 of the tire 3 is sleeved on the rim 2 toward the outer periphery 5 of the rim 2, and the inner tread 7 and the rim of the tire 3 An air pressure space 8 is formed between the outer periphery 5 of 2 and the outer tread 4 of the tire 3 is in contact with the ground when the vehicle is moving. Furthermore, an air nozzle 9 is provided on the outer surface 4 of the rim 2 and the air nozzle 9 communicates with the air pressure space 8 The gas nozzle 9 provides a gas input air pressure space 8.

The tire pressure detector 100 of the present invention includes a body 10 and a detection module 20. The detection module 20 is disposed in an accommodation space 11 inside the body 10. The body 10 is movably disposed in the air pressure space 8. To balance the mass of the wheel 1 and detect the gas pressure in the air pressure space 8 through a sensing unit 21 of the detection module 20, thereby achieving the effect of simultaneously balancing the wheel 1 and detecting the tire pressure .

The body 10 has a shape geometric center 12 and a center of mass 13. The position of the shape geometric center 12 is different from the position of the center of mass 13. The center of mass 13 is between the shape geometric center 12 and the outer edge of the body 10. The outer edge will be in contact with the inner tread 7 of the tire 3; further, the position of the center of mass 13 in the body 10 is lower than the position of the geometric center 12 of the body 10 in the body 10. Therefore, when the body 10 is at rest, the center of mass 13 is The position is normally lower than the position of the geometric center 12 of the shape and is located in the direction of gravity of the body 10.

Furthermore, the body 10 has a first axis 14 and a second axis 15 perpendicular to the first axis 14; the outer edge of the body 10 can be one of a sphere, an ellipsoid, a football or a cylinder; see As shown in FIGS. 1 and 2, in the first embodiment of the present invention, the outer edge of the body 10 is a round sphere, the length of the first shaft 14 is equal to the length of the second shaft 15, and the boundary between the first shaft 14 and the second shaft 15 Is the center of the body 10 and the shape geometric center 12 is the center of the body 10. The center of mass 13 is relatively located on the second axis 15 and lower than the position of the shape geometric center 12 on the second axis 15.

Please refer to FIG. 3 and FIG. 4. In the second embodiment of the present invention, the outer edge of the body 10 is an ellipsoid, wherein the length of the first shaft 14 is greater than the length of the second shaft 15 and the geometric center 12 of the shape is located at the first The boundary between the shaft 14 and the second shaft 15, and the center of mass 13 is relatively located on the second shaft 15 and lower than the position of the geometric center 12 of the shape at the second shaft 15.

Please refer to FIG. 5 and FIG. 6. In the third embodiment of the present invention, the outer edge of the body 10 is formed by a curved edge 16 connected to a plane 17, and the outer edge of the body 10 is viewed in cross section. The two ends are connected to both sides of the plane 17. Among them, the length of the first axis 14 is greater than the length of the second axis 15, the geometric center 12 of the shape is located at the junction of the first axis 14 and the second axis 15, and the center of mass 13 is located at the second The axis 15 is located between the geometric center 12 and the plane 17 of the shape.

In addition, in each embodiment of the present invention, the body 10 is a housing, and the detection module 20 is directly disposed in the accommodation space 11 of the body 10, wherein the body 10 is provided with a channel 18 therethrough, and the channel 18 communicates with the air pressure space 8 and communicates with The sensing unit 21 is connected, the detection module 20 is fixed in the accommodation space 11 of the body 10 by a filling member 30, the filling member 30 fills the accommodation space 11, and the sensing unit 21 detects the air pressure space through the channel 18. Gas pressure of 8, among which the filling member 30 can be plastic or rubber, plastics such as polyamide fiber (PA), polybutylene terephathalate (PBT), PBT, etc., and rubbers such as silicone ), Ethylene Propylene Diene Monomer (EPDM), etc.

The detection module 20 has a circuit substrate 22, a central processing unit 23, a wireless transmission unit 24, and a power supply unit 25. In the embodiment of the present invention, the sensing unit 21 and the central processing unit 23 and the wireless transmission unit 24 are coupled to each other and integrated into one. Among them, the wireless transmission unit 24 is one of the radio frequency antennas, wherein the radio frequency antenna may be sub-1GHz, that is, the frequency of the radio frequency antenna is lower than 1GHz, for example: 315MHz , 434MHz, 868MHz or 915MHz, in addition, it can also be 2.4GMHz; Power unit 25 series button battery.

When the sensing unit 21 detects the gas pressure in the air pressure space 8, the sensing unit 21 generates a pressure signal and transmits the pressure signal to the central processing unit 23, and the central processing unit 23 receives the pressure signal and transmits it by wireless The unit 24 transmits the pressure signal wirelessly, and the wireless transmission unit 24 can wirelessly connect with the vehicle's electronic control unit (Engine Control Unit, ECU). When the electronic control unit receives the pressure signal, it will The gas pressure display, or an alarm signal is issued when the gas pressure in the air pressure space 8 is abnormal to remind the driver, wherein the electronic control unit can be a prompt interface of one of a meter, a digital display, a light signal or a sound.

Furthermore, the circuit substrate 22 has a first surface 221 and a second surface 222 relatively far from each other. The sensing unit 21, the central processing unit 23, and the wireless transmission unit 24 are disposed on the first surface 221 of the circuit substrate 22. The power unit 25 is provided on the second surface 222 of the circuit substrate 22, wherein the installation direction of the circuit substrate 22 is parallel to the first axis 14 or the second axis 15.

In the first, second and third embodiments of the present invention, please refer to FIG. 1 and FIG. 3 and FIG. 5. The total weight of the sensing unit 21, the central processing unit 23 and the wireless transmission unit 24 is smaller than the weight of the power unit 25. In the embodiment of the present invention, the arrangement direction of the circuit substrate 22 is parallel to the first axis 14, wherein the first surface 221 and the second surface 222 of the circuit substrate 22 are relatively parallel to the first axis 14, and the first The surface 221 is offset from the first axis 14; thereby, the weight center of mass 13 of the body 10 is offset from the geometric center 12 of the shape by using the weight of the power unit 25.

In the first, second and third embodiments of the present invention, please refer to FIG. 2, FIG. 4 and FIG. 6. The detection module 20 is further provided with a weight unit 26, which is connected to the power unit 25. By increasing the weight of the power unit 25 by the weight unit 26, the total weight of the central processing unit 23 and the wireless transmission unit 24 is smaller than the total weight of the power unit 25 and the weight unit 26, wherein the weight unit 26 can be a metal block , Rubber block, or other material block, and the purpose of the weight unit 26 is to increase the weight of the body 10 and shift the center of mass 13 of the body 10 from the geometric center 12 of the shape.

Please refer to FIGS. 7 to 9. The body 10 provided with the detection module 20 is placed in the air pressure space 8. When the wheel 1 rotates to drive the vehicle, the centrifugal force of the wheel 1 rotates, so that the body 10 follows the wheel. 1 travel, because the center of mass 13 of the body 10 is lower than the geometric center 12 of the shape, so when the body 10 is affected by external forces, the body 10 will form a reciprocating shaking like a tumbler, and the body 10 will not move in any direction in a dynamic equilibrium manner. Scrolling, so that the pointing position of the wireless transmission unit 24 can keep facing the same direction, so that the signal transmission of the wireless transmission unit 24 is not disturbed and the transmission effect is continuous and uninterrupted.

Furthermore, in the third embodiment of the present invention, when the main body 10 is placed in the air pressure space 8, the plane 17 of the main body 10 will contact the inner tread 7 to keep the main body 10 from rolling in any direction and increase the stability of the main body 10. The direction of the wireless transmission unit 24 can be kept facing the same direction, so that the signal transmission of the wireless transmission unit 24 is not disturbed, the transmission effect is continuous, and the signal strength transmission and reception tends to be stable.

In addition, during the rotation of the main body 10, the gas pressure in the air pressure space 8 is detected by the detection module 20, so there is no need to additionally fix the wheel 1 to cause complicated procedures during installation; thereby, quick and easy installation is achieved. Convenience. In addition, the number of the tire pressure detectors 100 of the present invention can be one or more, and the user can adjust the number of the tire pressure detectors 100 according to requirements or the type of vehicle. Among them, when the number of the tire pressure detectors 100 is There are several, because the outer shell of the tire pressure detector 100 is a sphere; therefore, when the wheel 1 drives the vehicle to move, the body 10 makes rolling contact with the inner tread 7 of the tire 3, and then the wheel 1 and the wheel 1 are balanced in a dynamic balance manner. The unbalanced vibration caused by the wheel assembly and the mass of the wheel 1 can offset the unbalanced vibration caused by the wheel 1 and the wheel assembly to balance the mass of the wheel 1 and reduce the vibration of the wheel 1, thereby achieving the balance of the wheel 1 with both The effect of tire pressure detection.

It should also be noted that, in order to further achieve the balance of the tire 3 and the cost-saving function, the present invention can also put a single tire pressure detector 100 with a plurality of balance bodies (not shown) into the air pressure space 8, Each balance body can be in the shape of a sphere, and the principle of dynamic balance can be used to make the wheel 1 rotate to achieve a stable effect.

The above-mentioned embodiments are only used to illustrate the present invention, and are not intended to limit the scope of the present invention. Various modifications or changes which do not violate the spirit of the present invention belong to the scope of the present invention.

1‧‧‧ Wheel

15‧‧‧ second axis

2‧‧‧ rims

16‧‧‧ curved edge

3‧‧‧ tire

17‧‧‧ plane

4‧‧‧ outer surface

18‧‧‧channel

5‧‧‧ outer periphery

20‧‧‧ Detection Module

6‧‧‧outer tread

21‧‧‧sensing unit

7‧‧‧ inner tread

22‧‧‧circuit board

8‧‧‧ air pressure space

221‧‧‧ the first side

9‧‧‧ Gas nozzle

222‧‧‧Second Side

100‧‧‧ Tire Pressure Detector

23‧‧‧Central Processing Unit

10‧‧‧ Ontology

24‧‧‧Wireless Transmission Unit

11‧‧‧ accommodation space

25‧‧‧Power unit

12‧‧‧ Shape Geometry Center

26‧‧‧ counterweight unit

13‧‧‧ Center of Mass

30‧‧‧ Filler

14‧‧‧ first axis

FIG. 1 is a schematic cross-sectional view (1) of a tire pressure detector according to the first embodiment of the present invention, which shows that the outer edge of the body is a round sphere and is not provided with a weight unit. Fig. 2 is a schematic sectional view (2) of a tire pressure detector according to the first embodiment of the present invention, showing that the outer edge of the body is a round sphere and is provided with a weight unit. 3 is a schematic cross-sectional view (1) of a tire pressure detector according to a second embodiment of the present invention, showing that the outer edge of the body is ellipsoidal and is not provided with a weight unit. FIG. 4 is a schematic sectional view (2) of a tire pressure detector according to a second embodiment of the present invention, showing that the outer edge of the body is ellipsoidal and is provided with a weight unit. 5 is a schematic cross-sectional view (1) of a tire pressure detector according to a third embodiment of the present invention, showing that the outer edge of the body has a flat surface and is not provided with a weight unit. FIG. 6 is a schematic sectional view (2) of a tire pressure detector according to a third embodiment of the present invention, showing that the outer edge of the body has a flat surface and is provided with a weight unit. FIG. 7 is a schematic diagram of an embodiment in which the body of the present invention is provided on a wheel. FIG. 8 is a schematic cross-sectional view of an embodiment in which the main body of the present invention rolls in the air pressure space of a wheel. FIG. 9 is a schematic diagram of an embodiment of the steady state of the body of the present invention.

Claims (13)

A tire pressure detector with a center of gravity shift is used for a wheel, the wheel having a rim and a tire sleeved on the rim, and a pressure space is formed between the tire and the rim. There is an air nozzle communicating with the air pressure space, and the tire pressure detector includes: a body which is movably disposed in the air pressure space, and an accommodation space is provided in the body, wherein the body has a shape geometric center and a center of mass The position of the geometric center of the shape is different from the position of the center of mass of the mass, the center of mass is between the geometric center of the shape and the outer edge of the body; and a detection module is disposed in the accommodation space, the detection The module has a sensing unit, a central processing unit, a wireless transmission unit and a power supply unit that are coupled to each other. The sensing unit is used to detect the gas pressure in the air pressure space and generate a pressure signal. The central processing unit receives the pressure signal and wirelessly transmits the pressure signal outward through the wireless transmission unit. The tire pressure detector having a center of gravity shift as described in claim 1, wherein the outer edge of the body is a round sphere, and the geometric center of the shape is located at the center of the body. The tire pressure detector with center-of-gravity shift as described in claim 2, wherein the detection module further has a circuit substrate having a first surface and a second surface opposite to each other. The measurement unit, the central processing unit, and the wireless transmission unit are disposed on a first surface of the circuit substrate, and the power unit is disposed on a second surface of the circuit substrate. The tire pressure detector having a center of gravity shift as described in claim 3, wherein the total weight of the sensing unit, the central processing unit, and the wireless transmission unit is less than the weight of the power unit. The tire pressure detector with a center-of-gravity offset as described in claim 3, wherein the detection module is further provided with a weight unit, and the weight unit is connected to the power unit. The tire pressure detector with center-of-gravity offset according to claim 1, wherein the outer edge of the body is one of an ellipsoid, a football body or a cylinder, and the body has a first axis and is perpendicular to the first axis One axis is a second axis, the length of the first axis is greater than the length of the second axis, and the geometric center of the shape is located at the boundary between the first axis and the second axis. The tire pressure detector with center-of-gravity offset as described in claim 6, wherein the detection module further has a circuit substrate, and the circuit substrate has a first surface and a second surface opposite to each other. The measurement unit, the central processing unit, and the wireless transmission unit are disposed on a first surface of the circuit substrate, and the power unit is disposed on a second surface of the circuit substrate. The tire pressure detector having a center of gravity shift as described in claim 7, wherein the total weight of the sensing unit, the central processing unit, and the wireless transmission unit is less than the weight of the power unit. The tire pressure detector having a center-of-gravity offset as described in claim 7, wherein the detection module is further provided with a weight unit, and the weight unit is connected to the power unit. The tire pressure detector having a center of gravity shift as described in claim 1, wherein an outer edge of the body is formed by a curved edge connected to a plane, and the body has a first axis and one perpendicular to the first axis The second axis, the length of the first axis is greater than the length of the second axis, the geometric center of the shape is located at the boundary of the first axis and the second axis, and the center of mass is located at the second axis and at the geometric center of the shape and The plane between. The tire pressure detector with center-of-gravity offset as described in claim 10, wherein the detection module further has a circuit substrate, the circuit substrate has a first surface and a second surface opposite to each other. The measurement unit, the central processing unit, and the wireless transmission unit are disposed on a first surface of the circuit substrate, and the power unit is disposed on a second surface of the circuit substrate. The tire pressure detector having a center of gravity shift as described in claim 11, wherein the total weight of the sensing unit, the central processing unit, and the wireless transmission unit is less than the weight of the power unit. The tire pressure detector with a center-of-gravity offset as described in claim 11, wherein the detection module is further provided with a weight unit, and the weight unit is connected to the power unit.