TWI736743B - Non-fixed tire pressure detector - Google Patents

Abstract

A non-fixed tire pressure detector is applied to a wheel, wherein the wheel includes a rim and a tire. A pressure space is formed between the tire and the rim, and an air tap which is connected with the pressure space is disposed on the rim. The tire pressure detector includes a main body and a detection module. The main body is disposed in the pressure space and provided with a housing space. The detection module is disposed in the housing space for detecting the air pressure in the pressure space. Therefore, the present invention is easily disposed without necessity of applying other installation tools.

Description

Non-fixed tire pressure detector

The present invention relates to a tire pressure detection related field for wheels, in particular to a non-fixed tire pressure detector with a jump and air nozzle connection.

Press, the tire pressure detection system is an electronic system installed on the wheels to detect whether the tire pressure is sufficient. This system will detect in real time, and use the instrument, digital display, or simply use lights or sounds for driving People learn about 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 type and direct type according to the mode of operation. Among them, the indirect tire pressure detection system does not directly detect the tire pressure, but detects the speed of the wheel. If the system detects that the speed of a wheel is too far apart from the speed of other wheels, there may be tires. If the pressure is abnormal, the driver will be alerted, but the indirect tire pressure detection system cannot provide the driver with the actual tire pressure value.

Furthermore, the direct tire pressure detection system, which has a sensor with signal transmission function, can provide the actual tire pressure value of the driver's wheel. Among them, there are two types of tires outside the tires and in-tire tires according to the installation method. The external sensor is attached to the air nozzle of the wheel and can be easily installed by the car owner. However, due to the weight of the sensor itself, locking on the air nozzle will cause uneven distribution of the wheel mass, which will affect the wheel balance and inject air When the sensor needs to be disassembled, there is a risk of damage to the sensor.

Moreover, when the rubber valve is combined with the tire external sensor, when the vehicle is moving There will be shaking, and the rubber body of the rubber valve may be broken after long-term operation. In addition, the in-tire sensor is installed in the rim of the wheel, and the tire needs to be disassembled for installation. Since it is generally a fixed tire pressure sensor, the air valve needs to be locked on the rim for installation. From time to time, technicians are not careful in construction, causing the tire skin or tools to directly hit the air nozzle or sensor when removing the tire, causing the air nozzle to break or the sensor to be damaged, which incurs additional costs to the merchants.

In order to solve the above-mentioned problems, the present invention provides a non-fixed tire pressure detector, which is used to solve the problems of inconvenient installation of the tire pressure detector and accidental damage to the tire pressure detector during construction by the technician.

An embodiment of the present invention provides a non-fixed tire pressure detector, which includes: a body, which is movably arranged in a pneumatic space, the body has an outer surface and an inner surface that are oppositely arranged, and the body is provided with A sphere-shaped container, the body covers the container, the inner surface of the body is in direct contact with the outer edge of the container, and an accommodating space is provided in the container; wherein the body is provided with a channel that penetrates the body and the container; and A detection module, which is arranged in the accommodating space of the container. The detection 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 unit detects the gas pressure in the air pressure space through the channel and generates a pressure signal. The central processing unit receives the pressure signal and transmits the pressure signal wirelessly to the outside through the wireless transmission unit. Among them, the sensing unit, the central processing unit and The total weight of the wireless transmission unit is less than the weight of the power unit.

In an embodiment of the present invention, the outer shape of the body is an ellipsoid or a rugby ball. Thereby, when the main body travels with the wheel, the outer shape of the main body and the spherical accommodating member are used to maintain the stable rolling effect of the main body, and prevent the main body from rolling randomly with the rotation of the wheel, causing damage to the main body.

In an embodiment of the present invention, the detection module further has a circuit substrate, a sensing unit, The central processing unit, the wireless transmission unit and the power unit are arranged on the circuit board; the body has a long axis and a short axis perpendicular to the long axis, the length of the long axis is greater than the length of the short axis, and the arrangement direction of the circuit board is parallel to the long axis, Wherein, the circuit substrate has a first surface and a second surface which are arranged oppositely, the sensing unit, the central processing unit and the wireless transmission unit are arranged on the first surface of the circuit substrate, and the power unit is arranged on the second surface of the circuit substrate. As a result, when the main body travels with the wheels, the weight of the power unit is used to shift the center of gravity of the main body, so that the main body can maintain a stable effect, and the transmission direction of the wireless transmission unit is kept facing the same direction. Therefore, the main body is not easy to follow the wheels. Arbitrary scrolling leads to the problem of interference and intermittent transmission of the signal transmission of the wireless transmission unit.

In summary, the present invention has the following characteristics:

1. The present invention detects the gas pressure in the air pressure space through the detection module, and is directly installed in the air pressure space without being additionally fixed on the rim; therefore, it can be installed without using any tools, which is convenient for installation. Advantages, because it does not need to be installed, it is suitable for any form of wheels and is not affected by the specifications of the model and style.

2. Since it does not need to be fixedly installed on the rim, it can avoid the collision or damage caused by the technician in the process of disassembling the tire.

3. Place the main body with the detection module in the air pressure space. When the main body can move with the wheels, the main body can roll around the long axis with the long axis as the rotation center to maintain the rotation direction of the main body, and through the spherical accommodation The components can maintain the balance of the body, avoid the body from rolling randomly with the rotation of the wheels, causing damage to the body, and stabilize the transmission effect of the wireless transmission unit, avoiding the problem of signal interference.

4. When the wheel rotates, the main body contacts the wheel, and the accommodating part in the main body provides shock absorption and buffer function, so as to avoid the vibration of the main body directly affects the units of the detection module when the main body rotates with the wheel, so as to protect the detection module. Test each unit in the module, and effectively increase the service life of the tire pressure detector.

1: wheel

14: Receptacle

2: Wheels

141: Outer Edge

3: tires

15: Channel

4: Outer surface

16: outer surface

5: Outer periphery

17: inner surface

6: Tread

20: Detection module

7: Inner tread

21: Sensing unit

8: Air pressure space

22: Circuit board

9: Gas mouth

221: first side

100: Tire pressure detector

222: second side

10: body

23: Central Processing Unit

11: accommodating space

24: wireless transmission unit

12: Long axis

25: Power unit

13: short axis

30: Filler

Fig. 1 is a schematic diagram of the appearance of a tire pressure detector according to an embodiment of the present invention, showing an ellipsoid of this system.

2 is a schematic cross-sectional view (1) of the main body of an embodiment of the present invention, showing that the arrangement direction of the circuit board is parallel to the long axis.

Fig. 3 is a schematic cross-sectional view (2) of the main body of an embodiment of the present invention, showing that the arrangement direction of the circuit board is parallel to the minor axis.

Fig. 4 is a schematic cross-sectional view (3) of the main body of an embodiment of the present invention, showing that the main body is provided with accommodating parts, and the arrangement direction of the circuit board is parallel to the long axis.

Fig. 5 is a schematic cross-sectional view (4) of the main body of an embodiment of the present invention, showing that the main body is provided with accommodating parts, and the arrangement direction of the circuit board is parallel to the short axis.

Fig. 6 is a schematic diagram of an embodiment of the present invention, showing that the body is placed in the air pressure space of the wheel.

Fig. 7 is a schematic cross-sectional view of an embodiment of the present invention, showing that the body is placed in the air pressure space of the wheel.

Fig. 8 is a schematic cross-sectional view of an embodiment of the present invention, showing that the body rolls in the air pressure space of the wheel.

Fig. 9 is a schematic diagram of the appearance of a tire pressure detector according to another embodiment of the present invention, showing that the body is a rugby body.

FIG. 10 is a schematic diagram of the appearance of a tire pressure detector according to another embodiment of the present invention, showing that the body is cylindrical.

In order to facilitate the description of the central idea of the present invention expressed in the column of the above-mentioned summary of the invention, specific embodiments are used to express it. The various objects in the embodiments are drawn according to the scale, size, deformation or displacement suitable for illustration, rather than drawn according to the actual component ratio.

The singular forms "一", "one" and "the" used in this article also 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 "including" designate the presence of the features, bodies, modules, and/or units, but do not exclude the presence or addition of one or more other features, Body, module and/or unit.

When it is mentioned that a component is "on" or "on" another component, or that a component is "connected", "coupled" or "connected" with another component, it can be directly disposed on, coupled, connected or It is connected to another element or there is an intermediate element, which is described first.

1 to 10, the present invention provides a non-fixed tire pressure detector 100, which is used in a wheel 1 of a vehicle. The vehicle can be one of a locomotive or an automobile. In the embodiment of the present invention, , 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 peripheral edge 5. The outer surface 4 faces one end of the rotation axis of the wheel 1, and the outer peripheral edge 5 surrounds the wheel 1 The rotation axis is set, and the tire 3 has an outer tread 6 and an inner tread 7, wherein the inner tread 7 of the tire 3 is sleeved on the rim 2 facing the outer periphery 5 of the rim 2, and the inner tread 7 of the tire 3 and the rim 2. An air pressure space 8 is formed between the outer periphery 5, and when the vehicle is running, the outer tread 6 of the tire 3 is in contact with the ground; in addition, the outer surface 4 of the rim 2 is provided with an air nozzle 9 which communicates with the air pressure space 8 , Among them, the gas nozzle 9 provides gas input pressure space 8.

The tire pressure detector 100 of the present invention includes: a main body 10 and a detection module 20. The detection module 20 is disposed in an accommodating space 11 inside the main body 10, wherein the main body 10 is movably disposed in the air pressure space 8 , Used 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.

The body 10 has a major axis 12 and a minor axis 13 perpendicular to the major axis 12. The length of the major axis 12 is greater than the length of the minor axis 13, and the outer shape of the body 10 can be an ellipsoid (as shown in Figure 1), a football body (As shown in Fig. 9) or a cylinder (as shown in Fig. 10), wherein, when the outer shape of the body 10 is an ellipsoid or a rugby ball, the section of the body 10 along the major axis 12 is elliptical, and the body 10 is along the minor axis The section of the body 13 is round; when the body 10 is cylindrical, the section of the body 10 along the long axis 12 is rectangular, and the section of the body 10 along the short axis 13 is round; thereby, the wheel 1 rotates to drive the vehicle When traveling, the centrifugal force of the rotation of the wheel 1 causes the main body 10 to travel with the wheel 1, and the outer shape of the main body 10 is used to maintain rolling contact with the inner tread 7 of the tire 3 around the long axis 12 to fix the rotation direction of the main body 10.

Furthermore, the number of the main body 10 can be one or more, and the user can adjust the number of the main body 10 according to needs or the type of vehicle. In the embodiment of the present invention, the number of the main body 10 is more than one. It should also be noted that, in order to further achieve the function of balancing the tire 2 and saving costs, the present invention can also incorporate a single body 10 with a plurality of balance bodies (not shown) in the air pressure space 8. Each balance body may be The spherical shape uses the principle of dynamic balance to make the wheel 1 rotate to achieve a stable effect.

In addition, in one embodiment of the present invention, the main body 10 is a housing, and the detection module 20 is directly disposed in the accommodating space 11 of the main body 10, wherein the main body 10 is provided with a passage 15 through which the passage 15 communicates with the air pressure space 8 and Connected to the sensing unit 21, the detection module 20 is fixed to the accommodating space 11 of the body 10 by a filler 30, the filler 30 fills the accommodating space 11, and the sensing unit 21 detects the air pressure through the channel 15 The gas pressure in the space 8, where the filler 30 is made of plastic or rubber, such as polyamide fiber (PA), polybutylene terephathalate (PBT), etc., and rubber such as silicone , Ethylene Propylene Diene Monomer (EPDM), etc.

In another embodiment of the present invention, please refer to FIGS. 4 and 5, the main body 10 has an outer surface 16 and an inner surface 17 opposite to each other. The main body 10 is provided with a spherical receiving member 14, and the main body 10 is wrapped around the outer edge 141 of the receiving member 14. The inner surface 17 of the body 10 is directly connected to the outer edge 141 of the receiving member 14 Contact, the accommodating space 11 is provided in the accommodating member 14, and the detection module 20 is provided in the accommodating space 11 of the accommodating member 14, wherein the channel 15 penetrates the main body 10 and the accommodating member 14, and the accommodating member 14 is accommodated The space 11 is filled with the filling member 30, whereby the ellipsoid-shaped body 10 is used to stably drive the receiving member 14 to rotate around the long axis 12.

The detection module 20 has a circuit board 22, a central processing unit 23, a wireless transmission unit 24, and a power unit 25 for providing power. In the embodiment of the present invention, the sensing unit 21, the central processing unit 23 and the wireless transmission unit 24 are coupled to each other and integrated into one body; among them, the wireless transmission unit 24 is one of the radio frequency antennas, where the radio frequency antenna can be sub-1GHz, that is, the frequency of the radio frequency antenna is lower than 1GHz, for example: 315MHz , 434MHz, 868MHz, 915MHz and other frequency bands, or the frequency is 2.4GMHz; the power unit 25 is a 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 wirelessly The unit 24 wirelessly transmits the pressure signal to the outside, and the wireless transmission unit 24 is wirelessly connected to the electronic control unit (ECU) of the vehicle. When the electronic control unit receives the pressure signal, it displays the gas pressure in the air pressure space 8. Or when the gas pressure in the air pressure space 8 is abnormal, a warning signal is issued to remind the driver, where the electronic control unit (ECU) can be a prompt interface of one of instrument, digital display, light signal or sound.

Furthermore, the circuit substrate 22 has a first surface 221 and a second surface 222 relatively far away 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, and the power unit 25 is arranged on the second surface 222 of the circuit board 22. The total weight of the sensing unit 21, the central processing unit 23 and the wireless transmission unit 24 is greater than the weight of the power unit 25. The arrangement direction of the circuit board 22 is flat on the long axis 12 or The short axis 13, in the embodiment of the present invention, please refer to FIG. 1, FIG. 2 and FIG. 4. The arrangement direction of the circuit board 22 is parallel to the long axis 12. The two sides 222 are relatively parallel to the long axis 12; please refer to FIGS. 3 and 5, the arrangement direction of the circuit board 22 is parallel to the short axis 13, wherein the first surface 221 and the second surface 222 of the circuit board 22 are relatively parallel to the short axis 13; In this way, the weight of the power unit 25 is used to shift the center of gravity of the main body 10, so that the second surface 222 of the circuit board 22 is kept facing the bottom of the wheel 1, thereby stabilizing the main body 10, making the main body 10 difficult to travel with the wheel 1 and arbitrarily The effect of scrolling.

Please refer to Figure 2 and Figure 6 to Figure 8. The body 10 with the detection module 20 is placed in the air pressure space 8. When the body 10 can travel with the wheel 1, the outer shape of the body 10 is used to allow the body 10 to be able to Rolling around the long shaft 12 with the long shaft 12 as the rotation center maintains the rotation direction of the main body 10 so that the pointing position of the wireless transmission unit 24 can be kept facing the same direction, thereby preventing the signal transmission of the wireless transmission unit 24 from being disturbed and The transmission effect is continuous and uninterrupted.

Furthermore, the main body 10 can be in rolling contact with the inner tread 7 of the tire 3 when traveling with the wheel 1, and the main body 10 is used as a dynamic balance of the wheel 1, so as to counteract the unbalanced vibration caused by the wheel 1 and the wheel assembly to balance the wheel 1. Mass and reduce the vibration of the wheel 1, thereby achieving the balance of the wheel 1 and the function of tire pressure detection.

In addition, in another embodiment of the present invention, the weight of the power unit 25 is used to shift the center of gravity of the main body 10. When the main body 10 rotates with the wheel 1, the main body 10 can be stabilized so that the main body 10 will not roll randomly. Furthermore, the pointing position of the wireless transmission unit 24 is maintained, and the signal transmission effect of the wireless transmission unit 24 is improved.

It can be seen from the above description that the present invention has the following characteristics:

1. The present invention detects the gas pressure in the air pressure space 8 through the detection module 20, and can be directly installed in the air pressure space 8, without additional fixing on the rim 2; therefore, it can be installed without using any tools , Has the advantages of convenient installation; and because it does not need to be installed, it is suitable for any form The wheel 1 is not restricted by the specifications of the model and style.

2. Since it does not need to be fixedly installed on the rim 2, the problem of collision or damage to the tire pressure detector 100 caused by the technician during the process of removing the tire 3 can be avoided.

3. Place the main body 10 with the detection module 20 in the air pressure space 8. When the main body 10 can travel with the wheel 1, the main body 10 can roll around the long shaft 12 with the long shaft 12 as the center of rotation to keep the main body 10 in place. The direction of rotation prevents the main body 10 from rolling randomly with the rotation of the wheel 1, causing damage to the main body 10, stabilizes the transmission effect of the wireless transmission unit 24, and avoids the problem of signal interference.

4. With a plurality of balance bodies in a dynamic balance manner, to offset the unbalanced vibration caused by the wheel 1 and the wheel assembly, as well as the mass of the wheel 1, so as to achieve the balance effect of the wheel 1.

5. With the power unit 25 installed on the circuit board 22, using the concept of weight center offset, the body 10 is not easy to follow the wheels 1 and roll freely, while maintaining the pointing position of the wireless transmission unit 24, and improving the signal transmission of the wireless transmission unit 24 Effect.

6. When the wheel 1 rotates, the outer surface 16 of the main body 10 directly contacts the wheel 1, and the accommodating member 14 in the main body 10 provides shock absorption and buffer function, so as to prevent the main body 10 from being directly subjected to vibration when the main body 10 rotates with the wheel 1. Each unit of the detection module 20 is affected to protect each unit of the detection module 20 and effectively increase the service life of the tire pressure detector 100.

The above-mentioned embodiments are only used to illustrate the present invention, and are not used to limit the scope of the present invention. All modifications or changes made without violating the spirit of the present invention fall within the scope of the present invention's intended protection.

100: Tire pressure detector

20: Detection module

10: body

21: Sensing unit

11: accommodating space

22: Circuit board

12: Long axis

221: first side

13: short axis

222: second side

14: Receptacle

23: Central Processing Unit

141: Outer Edge

24: wireless transmission unit

15: Channel

25: Power unit

16: outer surface

30: Filler

17: inner surface

Claims (5)

A non-fixed tire pressure detector, comprising: a body movably arranged in the air pressure space of the wheel, the body having an outer surface and an inner surface arranged oppositely, and one of the spherical bodies is arranged in the body A receiving piece, the body covering the receiving piece, the inner surface of the body is in direct contact with the outer edge of the receiving piece, and an accommodating space is provided in the receiving piece; wherein a passage is penetrated through the body and the receiving piece; and A detection module, which is arranged in the accommodating space of the accommodating member, the detection module having a sensing unit, a central processing unit, a wireless transmission unit, and a power supply unit coupled to each other, The sensing unit detects the gas pressure in the air pressure space of the wheel through the channel and generates a pressure signal. The central processing unit receives the pressure signal and transmits the pressure signal wirelessly to the outside through the wireless transmission unit. 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 non-fixed tire pressure detector according to claim 1, wherein the outer shape of the body is an ellipsoid or a rugby ball. The non-fixed tire pressure detector according to claim 2, wherein the detection module further has a circuit substrate, and the sensing unit, the central processing unit, the wireless transmission unit and the power unit are arranged in The circuit substrate; the body has a major axis and a minor axis perpendicular to the major axis, the length of the major axis is greater than the length of the minor axis, the circuit board is arranged in parallel with the major axis, the channel is completely perpendicular to The long axis. The non-fixed tire pressure detector according to claim 3, wherein the circuit substrate has a first surface and a second surface disposed oppositely, the sensing unit, the central processing unit, and the wireless transmission unit The power unit is arranged on the first surface of the circuit substrate, and the power unit is arranged on the second surface of the circuit substrate. The non-fixed tire pressure detector according to claim 1, wherein the wireless transmission unit is a radio frequency antenna.

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