Wheel looseness detection device

Abstract

To provide a wheel looseness detection device which detects looseness of a fastening component of a wheel and further detects monitoring and detection of an engagement state of the wheel.SOLUTION: A wheel looseness detection device is installed in the wheel, and a fastening hole is provided in the wheel. A fastening component is provided to penetrate to the fastening hole, and is fixed thereto. The wheel looseness detection device 1 includes a washer 10, an outer shell, a looseness sensor module, and a power source component 40. The washer 10 has a through hole 11 and a fitting part 12, the fastening component is provided to penetrate to the through hole 11 and the washer 10 is fixed thereto, and the volume of the fastening component covers at least a partial range of the fitting part 12. The outer shell is fit to the fitting part 12, and is used to store the looseness sensor module. The looseness sensor module includes a pressure sensor 31. When the fastening component 3 is tightly fastened thereto and the surface of the wheel 2 is pressed, tight contact force is detected by the pressure sensor 31.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a detection device, and particularly to a wheel loosening detection device.

Background Art

[0002] There are times when the wheels of a vehicle become loose during driving. When the wheel becomes loose, it is likely to cause a dangerous situation during driving, and in addition, the fallen tire may roll on the road, seriously endangering the safety of other vehicles and people. The structure of the vehicle tire and the entire wheel includes a wheel attached to the hub of the vehicle and a tire located outside the wheel. The wheel is provided with a plurality of holes for passing through the fixing bolts of the hub, and further, a plurality of nuts and bolts are combined to fix the wheel to the hub.

[0003] Among these, commercial vehicles and large vehicles frequently drive, so the tires wear severely and it is necessary to always replace the tires. In that case, it is also necessary to disassemble the fixing structure (bolts and nuts) of the wheel and the hub, but at that time, the threads of the bolts and nuts may be damaged. In addition, when exposed to wind, sunlight, rain, etc., there is a possibility that problems such as rust and embrittlement may occur in the fixing structure of the wheel and the hub, and all of these are the causes of wheel detachment accidents.

Summary of the Invention

Problems to be Solved by the Invention

[0004] Conventionally, there has been no device for accurately detecting whether the fixing structure of the wheel and the hub is correctly fastened, and the problem of loosening due to uncertain fastening of the wheel has always been caused. Therefore, the main object of the present invention is to provide a wheel loosening detection device to solve the above-mentioned problems.

Means for Solving the Problems

[0005] The wheel loosening detection device provided by the present invention is installed on the wheel, and the wheel is provided with a fastening hole. A fastening component is penetrated and fixed in the fastening hole. The wheel loosening detection device is provided with a washer, an outer shell, a loosening sensor module, and a power supply component. [[ID=I]] The washer has a through hole and a fitting portion. The fastening component is penetrated through the through hole to fix the washer, and the volume of the fastening component covers at least a partial range of the fitting portion. The outer shell includes an upper outer shell and a lower outer shell. The upper outer shell has an upper extension portion, and the lower outer shell has a lower extension portion. The upper extension portion and the lower extension portion are combined with each other and fitted and fixed to the fitting portion. The loosening sensor module is provided with a pressure sensing portion installed between the upper extension portion and the lower extension portion. When the fastening component is tightly fastened and the surface of the wheel is pressed, the pressure sensing portion detects the tightening force. However, when the pressure sensing portion detects the disappearance of the tightening force, the loosening sensor module emits a warning signal. The power supply component is coupled to the loosening sensor module and supplies power to the loosening sensor module.

[0006] As described above, the wheel loosening detection device of the present invention accurately detects whether the fastening component is correctly screwed and fixed by the loosening sensor module, detects the screwing state of the wheel in real time, and achieves the purpose of avoiding wheel loosening.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiments for Carrying Out the Invention

[0008] In order to explain the core idea expressed in the creative content of the present invention described above, specific embodiments are given below. It should be stated in advance that the ratios of the respective components shown in the embodiments are for the purpose of explanation and are not drawn according to the actual ratios of the components.

[0009] As shown in FIGS. 1 to 7, the wheel loosening detection device 1 shown in the embodiment of the present invention is installed on the wheel 2 of a vehicle. The wheel 2 is provided with a fastening hole 2a, and a fastening component 3 is penetrated and fixed in the fastening hole 2a. The wheel loosening detection device 1 has a washer 10, an outer shell 20, a loosening sensor module 30, and a power component 40. The present invention further has a circuit board 50, a signal transmission antenna 60, a position module 70, a state control module 80, a trigger control module 90, a light emitting module 100, a tire detection module 110, a temperature detection module 120, and a direction display component 130. Among them, in the embodiment of the present invention, the wheel loosening detection device 1 is installed on the spoke of the wheel 2.

[0010] As shown in FIGS. 3 to 6, the fastening component 3 includes a nut 3a and a bolt 3b. The wheel looseness detection device 1 of the present invention is installed on the fixing structure of the wheel and the hub. In particular, it is located between the nuts 3a on the surface of the wheel 2. Among them, the nut 3a generally has a thread design, rotates and engages with the bolt 3b for fixation, and is also brought into close contact with the surface of the wheel 2. Thus, when the nut 3a rotates in the reverse direction and moves away from the surface of the wheel 2, it indicates that the wheel 2 is in a loosened state. The present invention detects whether the nut 3a is in close contact with the surface of the wheel 2, or whether the nut 3a has moved away from the surface of the wheel 2 due to problems such as insufficient fixing force with the bolt 3b, insufficient frictional force, rust or corrosion of the structure. Once the detachment situation occurs in the nut 3a, the fixed structure between the wheel 2 and the hub is lost, and the risk of dropping is extremely increased.

[0011] The washer 10 has a through hole 11 and a fitting portion 12. The fastening component 3 is passed through the through hole 11 to fix the washer 10. The volume of the fastening component 3 shall cover at least a part of the fitting portion 12. As shown in FIGS. 2 and 4 to 6, the washer 10 is installed on the surface of the wheel 2 by the bolt 3b passed through the through hole 11. When the nut 3a and the bolt 3b are rotated and engaged for fixation, the washer 10 is sandwiched between the nut 3a and the surface of the wheel 2. Further, the fitting portion 12 has a concave groove shape to fix the outer shell 20 to the washer 10.

[0012] The outer shell 20 includes an upper outer shell 21 and a lower outer shell 22. The upper outer shell 21 has an upper extension portion 211, and the lower outer shell 22 has a lower extension portion 221. The upper extension portion 211 and the lower extension portion 221 are combined with each other and fitted and fixed to the fitting portion 12. Among them, inside the outer shell 20, there is a space for arranging the looseness sensor module 30 and the power supply component 40 to prevent the looseness sensor module 30 and the power supply component 40 from being directly damaged by foreign objects from the outside.

[0013] Furthermore, since the present invention is exposed outside the wheel 2 and is constantly exposed to wind, sunlight, and rain, the outer shell 20 needs to have a certain waterproof and shockproof ability. Among them, the waterproof ability should be IP64 or above to prevent the intrusion of rainwater or the entry of water during car washing. The shockproof coefficient exceeds 1500g. Therefore, during the driving process of the vehicle, it is possible to prevent damage problems such as being hit by small stones or fragments bounced from the ground, or accidentally hitting the bolt during daily inspections. In this embodiment, the material of the outer shell 20 does not include metals with interference problems, so that wireless signals can be effectively blocked.

[0014] As shown in FIGS. 1 to 3, a plurality of protrusions 212 are provided on the surface of the upper extension portion 211. Since the protrusions 212 can increase the frictional force, the outer shell 20 can more effectively prevent the slipping problem when the nut 3a is screwed. The lower outer shell 22 further has a detection hole 222 provided in the lower extension portion 221. The detection hole 222 is used to penetrate the loosening sensor module 30, whereby the loosening sensor module 30 can detect the screwing state of the fastening component 3.

[0015] In the embodiment of the present invention, it should be defined first that the horizontal direction is parallel to the washer 10 itself, and the vertical direction is the same as the thickness direction of the washer 10. As shown in FIGS. 1 to 3, the horizontal width of the upper extension portion 211 at a location close to the center position of the washer 10 is larger than the width at a location away from the center position of the washer 10, and the lower extension portion 221 corresponds to the shape of the upper extension portion 211, and the horizontal width of the lower extension portion 221 at a location close to the center position of the washer 10 is larger than the width at a location away from the center position of the washer 10. In addition, the fitting portion 12 has a greater horizontal width at a location closer to the central position of the washer 10 than at a location farther from the central position of the washer 10. Among them, the upper extension portion 211, the lower extension portion 221, and the fitting portion 12 form the shape of a head (wide) and a neck (narrow). This is in response to the influence of centrifugal force caused when the tire and the wheel are rotating, and has the effect of preventing the outer shell 20 from falling off and detaching from the connection and fixing relationship with the washer 10. Therefore, as can be seen from the above description, by simply providing a design in which the location farther from the central position of the washer 10 is narrow and small, the problem that the outer shell 20 detaches from the connection with the washer 10 due to centrifugal force as described above can be prevented. For example, it is also possible to design the shapes of the upper extension portion 211, the lower extension portion 221, and the fitting portion 12 as an inverted triangle, a T-shape, etc. By designing the location closer to the central position of the washer 10 as the head (wide) and the location farther from the central position of the washer 10 as the neck (narrow), the above-mentioned purpose can be achieved. In addition, it is also possible to design the washer 10 and the outer shell 20 to be integrally formed. Thereby, the problem that the location where different materials are combined becomes unstable can be avoided.

[0016] The loosening sensor module 30 includes a pressure sensing portion 31 installed between the upper extension portion 211 and the lower extension portion 221. When the fastening component 3 is tightly fastened and the surface of the wheel 2 is pressed, the pressure sensing portion 31 detects the tightening force. Also, when the pressure sensing portion 31 detects the disappearance of the tightening force, the loosening sensor module 30 emits a warning signal to warn that the fastening component 3 is not tightly screwed. Among them, the loosening sensor module 30 is an electronic device that emits an electronic signal after sensitively sensing the drop in the gap in this embodiment.

[0017] As shown in FIG. 7, in the embodiment of the present invention, the loosening sensor module 30 further has a warning unit 32. The warning unit 32 is coupled to the pressure sensing portion 31, and when the pressure sensing portion 31 detects the disappearance of the tightening force, the warning unit 32 emits a warning signal.

[0018] As shown in FIGS. 3, 5, and 7, in an embodiment of the present invention, the pressure sensing unit 31 further has a detection post 311 disposed in the detection hole 222. The detection post 311 extends from the detection hole 222 and contacts the surface of the wheel 2. Depending on whether it is close to or far from the wheel 2 opposite to the fastening component 3, the detection post 311 is in a tight state P1 or a loose state P2. When the detection post 311 is in the loose state P2, the pressure sensing unit 31 transmits a loose signal to the warning unit 32, and the warning unit 32 transmits a warning signal accordingly.

[0019] As shown in FIGS. 3 to 7, in another embodiment of the present invention, when the detection post 311 is in the tight state P1, the pressure sensing unit 31 continuously transmits a tight signal to the warning unit 32. When the detection post 311 is in the loose state P2, the pressure sensing unit 31 stops transmitting the tight signal to the warning unit 32. After the warning unit 32 stops receiving the tight signal, a warning signal is transmitted accordingly. Also, it is possible to set that when the warning display time exceeds after the pressure sensing unit 31 stops transmitting the tight signal, the warning unit 32 transmits a warning signal accordingly. Thereby, an error in signal reception by the warning unit 32 is prevented, and a situation of reporting error is avoided. Also, the loose sensor module 30 can set a transmission interval time. Thereby, the pressure sensing unit 31 transmits a tight signal regularly based on the transmission interval time, so that problems such as excessive power consumption and low continuous power of the loose sensor module 30 can be avoided. The transmission interval time can be set to once per minute, once every two minutes, once every three minutes, etc.

[0020] As described above, the pressure sensing unit 31 can achieve the purpose of accurately detecting the screwing state of the fastening component 3 through two methods: transmitting a loose signal when the detection post 311 is in the loose state P2, or stopping the transmission of the tight signal.

[0021] Also, it is necessary to explain that the loosening sensor module 30 can be directly installed between the nut 3a and the surface of the wheel 2. In addition, when there is not enough flat surface at the position of the nut 3a or the wheel 2 corresponding to the loosening sensor module 30, it is also possible to tightly sandwich the loosening sensor module 30 from both sides. Also, it is possible to separately install an auxiliary washer on one side of the nut 3a adjacent to the loosening sensor module 30. Or, it is also possible to separately install an auxiliary washer on one side of the wheel 2 adjacent to the loosening sensor module 30. Also, it is possible to install an auxiliary washer on either one side of each of the surface of the nut 3a and the wheel 2 adjacent to the loosening sensor module 30. As described above, a sufficient support structure on a plane is provided, and the loosening sensor module 30 can be tightly sandwiched from both sides.

[0022] In one embodiment, the power supply component 40 is coupled to the loosening sensor module 30, the circuit board 50, the signal transmission antenna 60, the position module 70, the state control module 80, the trigger control module 90, the light emitting module 100, the tire detection module 110, and the temperature detection module 120, and supplies power to the loosening sensor module 30, the circuit board 50, the signal transmission antenna 60, the position module 70, the state control module 80, the trigger control module 90, the light emitting module 100, the tire detection module 110, and the temperature detection module 120. In this embodiment, the power supply component 40 is a button-type battery. It has the advantages of relatively small volume, supplying power to the entire device, high stability, and long lifespan.

[0023] The circuit board 50 is provided inside the outer shell 20. In one embodiment, the circuit board 50 is equipped with a processor 51. The processor 51 is coupled to the looseness sensor module 30, and the processor 51 receives and transmits warning signals. In this embodiment, the circuit board 50 is a printed circuit board (PCB) or other electronic carrier board, mainly mounting electronic devices such as the looseness sensor module 30 and the power components 40, and installing necessary chips, touch control induction chips, oscillators, the processor 51, etc. thereon to perform signal integration between the electronic devices.

[0024] In one embodiment, the signal transmission antenna 60 is provided on the circuit board 50 and is coupled to the processor 51 and the vehicle man-machine interface 4. The signal transmission antenna 60 is used to transmit warning signals to the vehicle man-machine interface 4. The vehicle man-machine interface 4 receives the warning signals and transmits the corresponding wheel looseness information to the user. Thereby, the user can understand that the fastening component 3 is not tightly screwed based on the wheel looseness information. Also, from the signal transmission antenna 60 to the circuit board 50, it has an installation height H, and the installation height H is 0.2 cm to 2 cm. A good installation height H is 0.5 cm to 2 cm, which can reduce unstable signal transmission.

[0025] In this embodiment, the circuit board 50 is made of a material very close to that of the metal wheel. Therefore, the electromagnetic wave signals transmitted or received by the signal transmission antenna 60 are affected by the metal shielding effect to a considerable level, resulting in the problems of unstable signal transmission and failure. Therefore, it is most suitable to adopt a monopole antenna for the signal transmission antenna 60 of the present invention. The transmission frequency of the signal transmission antenna 60 can adopt 2.4 GHz, 315 MHz, or 433 MHz. Since the detection device of the present invention is received by the vehicle man-machine interface 4 together with the signals of the tire pressure gauge, the frequency of the signals will also be the same as or different from that of the tire pressure gauge based on the design needs.

[0026] In one embodiment, the position module 70 is provided on the outer shell 20 and coupled to the processor 51. The position module 70 corresponds to the position of the wheel 2 where the wheel looseness detection device 1 is installed and records position information. Also, the position information transmitted to the vehicle man-machine interface 4 through the processor 51 is confirmed by the user. The position information is, for example, arranging the No. 1 and No. 2 wheel looseness detection devices 1 on the left front wheel, arranging the No. 3 and No. 4 wheel looseness detection devices 1 on the right front wheel, arranging the No. 5 and No. 6 wheel looseness detection devices 1 on the left rear wheel, arranging the No. 7 and No. 8 wheel looseness detection devices 1 on the right rear wheel, etc. Thereby, the vehicle man-machine interface 4 can clearly know which wheel 2 the alarm has occurred on according to the signal source.

[0027] In one embodiment, the state control module 80 is provided on the outer shell 20 and coupled to the processor 51. The state control module 80 is used to control the off state, detection state, and sleep state of the wheel looseness detection device 1. Also, the state control module 80 is a multi-stage switch and controls the off state, detection state, and sleep state of the wheel looseness detection device 1 in a multi-stage manner.

[0028] In one embodiment, the trigger control module 90 is provided on the upper outer shell 21 and coupled to the processor 51 and the state control module 80. When the user performs a trigger operation on the trigger control module 90, the trigger control module 90 outputs a corresponding trigger signal to the processor 51, and the state control module 80 correspondingly controls the wheel looseness detection device 1 to be in the off state, detection state, and sleep state. In this embodiment, the trigger control module 90 has a capacitive trigger structure. The user only needs to place a finger on the outer shell 20 corresponding to the position of the trigger control module 90. Based on the touch states such as touching for 1 second, 3 seconds, 10 seconds, or touching once, twice, three times, etc., different trigger commands can be generated to request different operations from the processor 51.

[0029] The light-emitting module 100 is provided on the upper outer shell 21 and is coupled to the processor 51 and the state control module 80. The light-emitting module 100 emits corresponding light based on the off state, detection state, and sleep state of the wheel loosening detection device 1, so that the user can know the actual operating state of the wheel loosening detection device 1 by the light. For example, if the light is continuous, it indicates that the wheel loosening detection device 1 is in the detection state; if it is in a blinking state, it indicates that the wheel loosening detection device 1 is in the sleep state.

[0030] In one embodiment, the tire detection module 110 is provided on the outer shell 20 and is coupled to the processor 51 and the state control module 80. The tire detection module 110 detects the rotational movement of the wheel 2 and outputs a tire rotation signal or a tire stop signal accordingly. When the tire detection module 110 outputs a tire rotation signal, the state control module 80 receives the tire rotation signal and controls the wheel loosening detection device 1 to enter the detection state. Also, when the tire detection module 110 outputs a tire stop signal, the state control module 80 receives the tire stop signal and controls the wheel loosening detection device 1 to enter the sleep state.

[0031] In one embodiment, the temperature detection module 120 is provided on the outer shell 20 and coupled to the processor 51. The temperature detection module 120 is used to detect the temperature of the wheel 2. When the temperature of the wheel 2 exceeds the temperature standard value, the temperature detection module 120 outputs a temperature warning signal to the processor 51. Thus, when the temperature detection module 120 detects the situation of excessive temperature of the wheel 2, it sends a temperature warning signal to the processor 51. The processor 51 sends the temperature warning signal to the vehicle man-machine interface 4 in the vehicle through the signal transmission antenna 60 to prompt the driver. Also, since the temperature detection module 120 used to monitor and control the temperature of the wheel 2 does not require very precise temperature detection ability, it can be directly installed inside the outer shell 20. Further temperature compensation is performed based on the temperature transmitted by the outer shell 20 to obtain the actual temperature of the wheel 2. Or, a metal piece is installed to penetrate the outer shell 20 and contact the temperature detection module 120 and the wheel 2 respectively. Due to the rapid heat transfer ability of the metal piece, the temperature detection module 120 can sense the temperature of the wheel 2 relatively accurately.

[0032] In one embodiment, the direction display component 130 is provided on the upper outer shell 21. When the fastening component 3 is screwed and fixed, the direction display component 130 focuses on the mark 2b on the wheel 2. In this embodiment, the number of the fastening components 3 is two or more, and the number of the wheel looseness detection devices 1 is also two or more. When all the plurality of fastening components 3 are screwed and fixed, the direction display components 130 of two adjacent wheel looseness detection devices 1 are in a focused state with each other. Therefore, the user or driver can know that the fastening component 3 is already loose if the two adjacent direction display components 130 are not in a focused state when the vehicle has not started or has stopped.

[0033] Although shown in FIG. 4 as an example in the embodiment of the present invention, the direction display component 130 is in the shape of an arrow for engagement, so that the user can conveniently identify it. In the process of the user rotating the nut 3a and tightly fastening the bolt 3b to the surface of the wheel 2, the position of the direction display component 130 is adjusted to focus on the mark 2b. Also, after the engagement and fixation of the bolt 3b and the nut 3a are completed, similarly, the direction display component 130 is also fixed by focusing on the mark 2b. Thereby, when looseness occurs in the rotation of the nut 3a, the user can also easily visually observe that the position of the direction display component 130 has shifted and is not focused on the mark 2b. In addition, the two wheel looseness detection devices 1 of the present invention are installed on two bolts 3b adjacent to each other on the wheel 2, and the two focal points of the direction display component 130 are aligned with each other. However, when the user visually observes that the position of the direction display component 130 has shifted and the focal points of the two direction display components 130 are not aligned with each other, it means that the nut 3a has probably become loose and shifted, and the purpose of confirming the direction is achieved as well.

[0034] The steps for detection will be described below.

[0035] The washer 10 connected to the looseness sensor module 30 is installed between the nut 3a and the surface of the wheel 2. After the nut 3a has surely completed screwing with the bolt 3b, the user touches the trigger control module 90. After a certain period of time has elapsed (for example, 3 seconds or 10 seconds), the wheel looseness detection device 1 is activated. That is to say, it means that electronic components such as the processor 51 and the looseness sensor module 30 have started operating. Also, the light emitting module 100 also lights up at the same time, indicating that the user has surely activated the device. At this time, the looseness sensor module 30 is sandwiched between the nut 3a and the surface of the wheel 2 and generates a normal operation signal and sends it to the processor 51. The processor 51 transmits an operation normal signal to the vehicle man-machine interface 4 in the vehicle through the signal transmission antenna 60 at regular intervals, notifying the driver in the vehicle that the screwing state of the wheel 2 is normal. Also, in order to avoid excessive power consumption, the interval for transmitting the operation normal signal to the vehicle man-machine interface 4 can be set to once every 1 minute, once every 2 minutes, once every 3 minutes, etc.

[0036] While the detection by the wheel loosening detection device 1 is being monitored and controlled, if, due to loosening, rotation, structural damage, etc. of the nut 3a, it moves away from the corresponding position on the surface of the wheel 2, even if it is a slight detachment, the loosening sensor module 30 senses it and either transmits a loosening signal to the warning unit 32 or stops transmitting the tightening signal. The warning unit 32 outputs a warning signal to the processor 51 after receiving the loosening signal or after the reception of the tightening signal stops and a certain time (which can be set, such as 1 second, 5 seconds, 30 seconds, or 2 minutes, etc.) has elapsed. Also, the processor 51 transmits the warning signal to the vehicle man-machine interface 4 in the vehicle through the signal transmission antenna 60, and the vehicle man-machine interface 4 notifies the driver by means such as sound, vibration, light, etc. that loosening has occurred in the wheel 2 and it is necessary to stop the vehicle for inspection.

[0037] Here, it is necessary to explain that the loosening sensor module 30 can notify the processor 51 of two different change states in different ways when the nut 3a is stably fixed and when it is loose respectively. This is in line with the technical requirements of the present invention and does not necessarily judge based on whether a signal is transmitted or not.

[0038] The vehicle man-machine interface 4 is attached to the vehicle and transmits information with the user's communication device using wireless transmission. The communication device is a communication device or a tablet computer equipped with a Bluetooth (registered trademark) interface. By connecting the communication device to the vehicle man-machine interface 4 through the communication device, the vehicle man-machine interface 4 can automatically upload the monitoring control detection information. The short-range wireless communication module serves as the medium for information transmission between the vehicle man-machine interface 4 and the communication device, and the long-range wireless communication module serves as the medium for transmission between the communication device and the cloud.

[0039] The vehicle man-machine interface 4 is a vehicle computer, an externally connectable main body, a tablet computer, or a mobile communication device, and includes a short-range communication interface among others. Among them, the loosening sensor module 30 connects the signal transmission antenna 60 and the vehicle man-machine interface 4, and is also equipped with an in-vehicle fault diagnosis device (OBD) or connected to the vehicle's controller area network (CAN BUS) to evaluate whether the cause of loosening is human error or component aging. The short-range wireless communication module is a Bluetooth communication interface, and the long-range wireless communication module includes GPRS (General Packet Radio Service), a cellular network, and millimeter wave (mmWave).

[0040] Taking this embodiment as an example for explanation, when the loosening sensor module 30 enters the detection stop state without being subjected to external force compression, the user touches the trigger control module 90 to execute a trigger operation (for example, touch for a certain period of time), and outputs a trigger signal to the processor 51, so that the wheel loosening detection device 1 controlled by the state control module 80 enters the sleep state or directly turns off. When the loosening sensor module 30 is subjected to external force and pressed to enter the detection state, the processor 51 determines it as a trigger error, and the wheel loosening detection device 1 controlled by the state control module 80 continues to maintain the detection state.

[0041] Furthermore, the state control module 80 can also control the wheel looseness detection device 1 to automatically enter the detection state. For example, when the pressure sensing unit 31 detects the force of being tightly fastened and a certain period of time (e.g., 10 seconds) has elapsed, the state control module 80 automatically controls the wheel looseness detection device 1 to convert from the sleep state or off state to the detection state. At the same time, the light-emitting module 100 also emits light and blinks for 1 to 3 seconds to notify the user that the wheel looseness detection device 1 has already entered the detection state.

[0042] Moreover, the state control module 80 can also control the wheel looseness detection device 1 to automatically enter the sleep state. For example, when it is detected by the wheel looseness detection device 1 that the tire has been stationary for a certain period of time and is not operating, it automatically enters the sleep state, and when the tire starts rotating again, the detection state is automatically activated.

[0043] Naturally, each wheel looseness detection device 1 can input the position of the corresponding wheel 2 into the vehicle man-machine interface 4 by the position module 70 in advance. For example, the No. 1 and No. 2 monitoring control detection devices are provided on the left front wheel, the No. 3 and No. 4 monitoring control detection devices are provided on the right front wheel, the No. 5 and No. 6 monitoring control detection devices are provided on the left rear wheel, and the No. 7 and No. 8 monitoring control detection devices are provided on the right rear wheel, etc. Thereby, the vehicle man-machine interface 4 can clearly know from which wheel 2 the alarm has occurred from the signal source.

[0044] It should be further explained that because the wheel looseness detection device 1 is installed on the surface of the wheel 2, the user can simply touch the trigger control module 90 to have the position module 70 of the wheel looseness detection device 1 transmit a position signal to the vehicle man-machine interface 4, thereby confirming the position of the wheel 2 on which the wheel looseness detection device 1 is located. For example, the user can enter the setting screen for the positions of the wheel looseness detection device 1 and wheel 2 through the settings on the vehicle man-machine interface 4, and also enter the setting for the "left front wheel" selected on the vehicle man-machine interface 4. Furthermore, if the user touches the trigger control module 90 within a certain period of time during this setting, the specific wheel looseness detection device 1 will be activated and transmit a position signal to the vehicle man-machine interface 4. The vehicle man-machine interface 4 will then know that the specific wheel looseness detection device 1 is installed on the "left front wheel." Following this analogy, the wheels 2 at other positions can also be set one by one in the same manner, completing the setting for each wheel 2 and each wheel looseness detection device 1.

[0045] Although it should be explained separately, a wheel 2 has a plurality of bolts 3b and nuts 3a threaded together. Therefore, by installing multiple sets of the wheel looseness detection device 1 of the present invention on the same wheel 2, it is possible to monitor and control the threading stability of a plurality of nuts 3a. However, since most situations in which a wheel 2 comes off while in motion occur due to the loosening of most of the nuts 3a, it is not necessarily necessary to install a wheel looseness detection device 1 of the present invention on every combination of bolts 3b and nuts 3a on a single wheel 2.

[0046] Therefore, the present invention has the following advantages.

[0047] (1) The wheel loosening detection device 1 of the present invention uses the loosening sensor module 30 to check whether the detection fastening part 3 is accurately and tightly screwed and fixed, and detects the screwing status of the wheel 2 in real time, thereby achieving the purpose of preventing the wheel 2 from loosening.

[0048] (2) The wheel loosening detection device 1 of the present invention integrates with the vehicle man-machine interface 4 through the signal transmission antenna 60. Thereby, during the driving process, the driver can know the screwing state of the wheel 2 at any time through the vehicle man-machine interface 4.

[0049] (3) The upper extension part 211, the lower extension part 221, and the fitting part 12 of the present invention are designed with the shapes of the head part (wide part) and the neck part (narrow part). Thereby, it effectively prevents the outer shell 20 from being shaken off and the connection and fixing relationship with the washer 10 from being disengaged, and achieves the effect that the washer 10 and the outer shell 20 are stably mounted.

[0050] (4) The position module 70 of the present invention accurately records the position information of each wheel loosening detection device 1 and transmits it to the vehicle man-machine interface 4. Thereby, the driver can clearly know which wheel 2 has caused the alarm through the vehicle man-machine interface 4.

[0051] (5) The state control module 80 and the trigger control module 90 of the present invention enable the user to more conveniently and simply operate and control the operating state of the wheel loosening detection device 1. Moreover, the light-emitting module 100 enables the user to more clearly and directly understand the real-time operating state of the wheel loosening detection device 1.

[0052] (6) The direction display relationship between the direction display component 130 and the mark 2b of the present invention enables the user to more intuitively observe whether the fastening component 3 is loose.

[0053] Although the present invention has been described in terms of the best embodiment, those skilled in the art may make various modifications without departing from the spirit and scope of protection of the present invention. The above-mentioned embodiments are used only for the purpose of illustrating the present invention and do not limit the scope of protection of the present invention. Therefore, all modifications and alterations made within the creative spirit of the present invention shall be included in the scope of the claims of the present invention. [Explanation of symbols]

[0054] 1. Wheel looseness detection device 2 wheels 2a Fastening hole 2b Mark 3 Fasteners 3a Nut 3b Bolt 4 Vehicle man-machine interface 10 Washers 11 Through holes 12 Fitting part 20 outer shell 21 Upper shell 211 Upper extension part 212 Protrusion 22 Lower shell 221 Lower extension part 222 detection hole 30 Looseness Sensor Module 31 Pressure sensor 311 Detection Pillar 32 Warning Unit 40 Power Supply Components 50 circuit board 51 processors 60 Signal Transmission Antenna 70 Position Module 80 State Control Module 90 Trigger Control Module 100 Light Emitting Module 110 Tire Detection Module 120 Temperature Detection Module 130 Directional display parts P1 Close relationship P2 Loose state H Installation height

Claims

1. A wheel loosening detection device installed on a wheel, wherein the wheel is provided with fastening holes, fastening parts are penetrated and fixed in the fastening holes, and the wheel loosening detection device is provided with a washer, an outer shell, a loosening sensor module, and power supply parts, the washer has a through hole and a fitting part, the fastening part is penetrated through the through hole to fix the washer, and the volume of the fastening part covers at least a partial range of the fitting part, the outer shell includes an upper outer shell and a lower outer shell, the upper outer shell has an upper extension part, the lower outer shell has a lower extension part, and the upper extension part and the lower extension part are combined with each other and fitted and fixed to the fitting part, the loosening sensor module is provided with a pressure sensing part installed between the upper extension part and the lower extension part. When the fastening part is tightly fastened and the surface of the wheel is pressed, the pressure sensing part detects the tightening force. When the pressure sensing part detects the disappearance of the tightening force, the loosening sensor module emits a warning signal, the power supply parts are coupled to the loosening sensor module and supply power to the loosening sensor module, which is characterized in that, Wheel loosening detection device.

2. The wheel loosening detection device according to claim 1, wherein a plurality of protrusions are provided on the surface of the upper extension part.

3. The wheel loosening detection device according to claim 1, wherein the width of the upper extension part at a position closer to the center of the washer is larger than the width at a position farther from the center of the washer, and the width of the lower extension part at a position closer to the center of the washer is larger than the width at a position farther from the center of the washer.

4. The wheel loosening detection device according to claim 1, wherein the loosening sensor module further has a warning unit, the warning unit and the pressure sensing part are coupled, and when the pressure sensing part detects the disappearance of the tightening force, the warning unit emits a warning signal.

5. The lower outer shell further has a detection hole installed in the lower extension part, and the pressure sensing part further has a detection column arranged in the detection hole. The detection column extends from the detection hole and contacts the surface of the wheel. Depending on whether the wheel is close to or far from the fastening part, the detection column is in a tight state or a loose state. When the detection column is in a loose state, the pressure sensing part transmits a loose signal to the warning unit, and the warning unit transmits a warning signal accordingly. The wheel loosening detection device according to claim 4, characterized in that.

6. The lower outer shell further has a detection hole installed in the lower extension part, and the pressure sensing part further has a detection column arranged in the detection hole. The detection column extends from the detection hole and contacts the surface of the wheel. Depending on whether the wheel is close to or far from the fastening part, the detection column is in a tight state or a loose state. When the detection column is in a tight state, the pressure sensing part continuously transmits a tight signal to the warning unit, and the warning unit transmits a warning signal accordingly. The wheel loosening detection device according to claim 4, characterized in that.

7. When the warning display time exceeds after the pressure sensing part stops transmitting the tight signal, the warning unit transmits a warning signal accordingly. The wheel loosening detection device according to claim 6, characterized in that.

8. The loosening sensor module can set a transmission interval time, whereby the pressure sensing part transmits a tight signal regularly based on the transmission interval time. The wheel loosening detection device according to claim 6, characterized in that.

9. The wheel loosening detection device further includes a circuit board provided inside the outer shell. The circuit board is provided with a processor, and the processor is coupled to the loosening sensor module. The processor receives and transmits warning signals. The wheel loosening detection device according to claim 1, characterized in that.

10. The wheel loosening detection device further includes a signal transmission antenna, which is provided on the circuit board and coupled to the processor. The signal transmission antenna transmits warning signals. The wheel loosening detection device according to claim 9, characterized in that.

11. The wheel looseness detection device according to claim 10, wherein there is an installation height from the signal transmission antenna to the circuit board, and the installation height is 0.2 cm to 2 cm.

12. The wheel looseness detection device according to claim 10, wherein the signal transmission antenna is coupled to a vehicle man-machine interface, and the vehicle man-machine interface receives a warning signal and transmits corresponding wheel looseness information to the user.

13. The wheel looseness detection device according to claim 9, further comprising a position module, wherein the position module is provided on the outer shell and coupled to the processor, and the position module corresponds to the position of the wheel on which the wheel looseness detection device is installed and records position information.

14. The wheel looseness detection device according to claim 9, further comprising a state control module, wherein the state control module is provided on the outer shell and coupled to the processor, and the state control module is used to control the off state, detection state, and sleep state of the wheel looseness detection device.

15. The wheel looseness detection device according to claim 14, further comprising a trigger control module, wherein the trigger control module is provided on the upper outer shell and coupled to the processor and the state control module. When the user performs a trigger operation on the trigger control module, the trigger control module outputs a corresponding trigger signal to the processor, and the state control module correspondingly controls the wheel looseness detection device to be in the off state, detection state, and sleep state.

16. The wheel looseness detection device according to claim 14, further comprising a light-emitting module, wherein the light-emitting module is provided on the upper outer shell and coupled to the processor and the state control module, and the light-emitting module emits corresponding light based on the off state, detection state, and sleep state of the wheel looseness detection device.

17. The wheel loosening detection device further comprises a tire detection module, the tire detection module is provided on the outer shell, and is coupled to the processor and the state control module. The tire detection module detects the rotational movement of the wheel and outputs a tire rotation signal or a tire stop signal accordingly. When the tire detection module outputs the tire rotation signal, the state control module receives the tire rotation signal and controls the wheel loosening detection device to enter the detection state. When the tire detection module outputs the tire stop signal, the state control module receives the tire stop signal and controls the wheel loosening detection device to enter the sleep state. The wheel loosening detection device according to claim 14, characterized in that.

18. The wheel loosening detection device further comprises a temperature detection module, the temperature detection module is provided on the outer shell and is coupled to the processor. The temperature detection module is used to detect the temperature of the wheel. When the temperature of the wheel exceeds the temperature standard value, the temperature detection module outputs a temperature warning signal to the processor. The wheel loosening detection device according to claim 9, characterized in that.

19. The wheel loosening detection device further comprises a direction display component, the direction display component is provided on the upper outer shell. When the fastening component is in a screwed and fixed state, the direction display component focuses on the mark on the wheel. The wheel loosening detection device according to claim 1, characterized in that.

20. The number of the fastening components is two or more, and the number of the wheel loosening detection devices is also two or more. When all of the fastening components are screwed and fixed, the direction display components of two adjacent wheel loosening detection devices are in a state of being focused on each other. The wheel loosening detection device according to claim 19, characterized in that.

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