Wheel looseness detection device

Abstract

To provide a wheel looseness detection device that detects looseness of a fastening component of a wheel, and further monitors and detects a screwed state of the wheel.SOLUTION: A wheel looseness detection device 1 is installed in a wheel, and the wheel is provided with a fastening hole. The fastening component is inserted into the fastening hole and fixed thereto. The wheel looseness detection device comprises a washer 10, an outer shell, a looseness sensor module, and a power supply component 40. The washer 10 has a through-hole 11 and a fitting part 12. The fastening component is inserted through the through-hole 11 to fix the washer 10, and a volume of the fastening component covers at least a part of the fitting part 12. The outer shell is fitted into the fitting part 12, and is used to house the looseness sensor module. The looseness sensor module comprises a pressure sensing unit 31. When the fastening component is tightly fastened and presses against a surface of the wheel, the pressure sensing unit 31 detects a tightening force. When a loss of the tightening force is detected, a warning signal is emitted.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a detection device, and more particularly to a loose wheel detection device. [Background technology]

[0002] Vehicle wheels sometimes come loose while driving. When a wheel loosens, it can create dangerous situations while driving, and the detached tire can roll onto the roadway, seriously endangering the safety of other vehicles and pedestrians. The overall structure of a vehicle's tire and wheel includes the wheel, which is attached to the vehicle's hub, and the tire, which is located on the outside of the wheel. The wheel has multiple holes for the hub fixing bolts to pass through, and the wheel is secured to the hub with a combination of multiple nuts and bolts.

[0003] Among these, commercial vehicles and large vehicles experience high tire wear due to frequent driving, necessitating frequent tire replacement. In doing so, the wheel-hub fixing structure (bolts and nuts) must be disassembled, which can cause damage to the threads of the bolts and nuts. Furthermore, exposure to wind, sunlight, rain, etc. can cause problems such as rust and embrittlement in the wheel-hub fixing structure, all of which can lead to wheel-off accidents. Summary of the Invention [Problem to be solved by the invention]

[0004] In the past, there was no device for accurately detecting whether the wheel and hub fixing structure was properly fastened, and the problem of loosening of the wheel due to insecure fastening was always caused. Therefore, the main object of the present invention is to provide a wheel looseness detection device to solve the above-mentioned problem. [Means for solving the problem]

[0005] The wheel looseness detection device provided by the present invention is installed on a wheel, and the wheel is provided with a fastening hole. A fastener is inserted and fixed into the fastening hole. The wheel looseness detection device includes a washer, an outer shell, a looseness sensor module, and a power supply component. The washer has a through hole and a fitting portion, and a fastener is inserted through the through hole to fix the washer, and the volume of the fastener covers at least a portion of the fitting portion. The outer shell includes an upper outer shell and a lower outer shell, the upper outer shell having an upper extension portion, and the lower outer shell having a lower extension portion. The upper extension portion and the lower extension portion are combined with each other and fitted and fixed to each other by a fitting portion. The loosening sensor module includes a pressure sensor located between the upper and lower extensions. When the fastening components are tightly fastened and press against the wheel surface, the pressure sensor detects the tightening force. When the pressure sensor detects the loss of the tightening force, the loosening sensor module issues a warning signal. A power supply component is coupled to the looseness sensor module and provides power to the looseness sensor module.

[0006] As described above, the wheel loosening detection device of the present invention uses a loosening sensor module to accurately detect whether fastening parts are properly screwed in and fixed, and detects the screwing status of the wheel in real time, thereby achieving the objective of preventing wheel loosening. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a perspective view showing the appearance of a wheel looseness detection device according to an embodiment of the present invention; [Figure 2] 1 is an exploded perspective view of a wheel looseness detection device according to an embodiment of the present invention. [Figure 3] 1 is a perspective view of a wheel looseness detection device according to an embodiment of the present invention, viewed obliquely from below when disassembled. FIG. [Figure 4]1 is a diagram showing a state in which a wheel looseness detection device according to an embodiment of the present invention is used, illustrating the position where the wheel looseness detection device is installed on a wheel. [Figure 5] 1 is a diagram illustrating a state in which the wheel looseness detection device according to the embodiment of the present invention is in use, showing that the detection post is in a tightly-fitted state. [Figure 6] 1 is a diagram illustrating a state in which the wheel looseness detection device according to the embodiment of the present invention is in use, showing that the detection post is in a loose state. [Figure 7] FIG. 2 is a block diagram showing connections of a wheel looseness detection device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0008] In order to explain the core idea expressed in the invention described above, specific embodiments are given below. It should be noted in advance that the proportions of the components shown in the embodiments are used for explanation purposes only and are not based on the actual proportions of the components.

[0009] 1 to 7 , a wheel looseness detection device 1 according to an embodiment of the present invention is installed on a vehicle wheel 2. The wheel 2 is provided with a fastening hole 2a, through which a fastener 3 is inserted for fixation. The wheel looseness detection device 1 includes a washer 10, a shell 20, a looseness sensor module 30, and a power supply component 40. The present invention further includes a circuit board 50, a signal transmission antenna 60, a position module 70, a status 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. In this embodiment of the present invention, the wheel looseness detection device 1 is installed on a spoke of the wheel 2.

[0010] 3 to 6, the fastening part 3 includes a nut 3a and a bolt 3b. The wheel loosening detection device 1 of the present invention is installed on the wheel and hub fixing structure, and is particularly located between the nuts 3a on the surface of the wheel 2. The nuts 3a generally have a thread design, and are rotated to screw into and fix the bolts 3b, and are tightly fitted onto the surface of the wheel 2. When the nut 3a rotates in the opposite direction and separates from the surface of the wheel 2, it indicates that the wheel 2 has become loose. 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 separated from the surface of the wheel 2 due to problems such as insufficient fastening force with the bolt 3b, insufficient friction, rust or corrosion of the structure, etc. Once the nut 3a separates, the wheel 2 loses its fixed structure with the hub, and there is a high risk of it falling off.

[0011] The washer 10 has a through hole 11 and, in one embodiment, a fitting portion 12. A fastener 3 is inserted through the through hole 11 to secure the washer 10. The volume of the fastener 3 covers at least a portion 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 a bolt 3b passed through the through hole 11. When the nut 3a and the bolt 3b are rotated to screw together and secure the washer 10, the washer 10 is sandwiched between the nut 3a and the surface of the wheel 2. The fitting portion 12 has a grooved shape, which secures 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 211, and the lower outer shell 22 has a lower extension 221. The upper extension 211 and the lower extension 221 are combined with each other and fitted and fixed to the fitting portion 12. The inside of the outer shell 20 has a space for arranging the looseness sensor module 30 and the power supply component 40, which prevents the looseness sensor module 30 and the power supply component 40 from being directly damaged by foreign objects from the outside.

[0013] Furthermore, because the present invention is exposed to the outside of the wheel 2 and is constantly exposed to wind, sunlight, and rain, the outer shell 20 must have a certain level of waterproofing and shock resistance. The waterproofing must be IP64 or higher to prevent the intrusion of rainwater or water from washing the car. The impact resistance coefficient must be greater than 1500g. This prevents damage caused by pebbles or debris from the ground while the vehicle is in motion, or accidentally hitting a bolt during daily inspection. In this embodiment, the material of the outer shell 20 does not contain metal, which can cause interference problems, thereby effectively blocking wireless signals.

[0014] 1 to 3, the upper extension 211 has a surface provided with a plurality of protrusions 212. The protrusions 212 can increase the frictional force, so that the shell 20 can more effectively prevent slippage when the nut 3a is screwed in. The lower shell 22 further has a detection hole 222 located on the lower extension 221, through which the loosening sensor module 30 is inserted, allowing the loosening sensor module 30 to detect the screwing state of the fastener 3.

[0015] In the embodiment of the present invention, it should first be defined 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 Figures 1 to 3, the horizontal width of the upper extension portion 211 at a point close to the center position of the washer 10 is larger than the width at a point 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 at a point close to the center position of the washer 10 is larger than the width at a point away from the center position of the washer 10. Furthermore, the horizontal width of the mating portion 12 near the center of the washer 10 is larger than the width of the mating portion away from the center of the washer 10. The upper extension portion 211, the lower extension portion 221, and the mating portion 12 are shaped like a head (wide) and a neck (narrow). This accommodates the centrifugal force generated when the tire and wheel rotate, and prevents the outer shell 20 from slipping off and becoming separated from the washer 10. Therefore, as can be seen from the above explanation, simply by designing the portions of the washer 10 that are narrower and smaller away from the center, it is possible to prevent the aforementioned problem of the outer shell 20 becoming separated from the washer 10 due to centrifugal force. For example, the upper extension portion 211, the lower extension portion 221, and the mating portion 12 can be designed in an inverted triangle, T-shape, or other shape. The above-mentioned objective can be achieved by designing the washer 10 so that the portion closest to the center is the head (wide) and the portion farther from the center is the neck (narrow). Alternatively, the washer 10 and the outer shell 20 can be molded as a single unit, which avoids the problem of instability at the joints of different materials.

[0016] The loosening sensor module 30 includes a pressure sensor 31 disposed between the upper extension 211 and the lower extension 221. When the fastening parts 3 are tightly fastened and press against the surface of the wheel 2, the pressure sensor 31 detects the tightening force. When the pressure sensor 31 detects a loss of the tightening force, the loosening sensor module 30 transmits a warning signal to warn that the fastening parts 3 are not tightly fastened. In this embodiment, the loosening sensor module 30 is an electronic device that sensitively detects a gap difference and then transmits an electronic signal.

[0017] 7, in an embodiment of the present invention, the loosening sensor module 30 further includes an alarm unit 32. The alarm unit 32 is coupled with the pressure sensing unit 31, and when the pressure sensing unit 31 detects the loss of the tightness force, the alarm unit 32 sends out an alarm signal.

[0018] 3, 5 and 7, in an embodiment of the present invention, the pressure sensing unit 31 further includes a sensing post 311 disposed in the sensing hole 222. The sensing post 311 extends from the sensing hole 222 and contacts the surface of the wheel 2. Depending on whether the sensing post 311 is close to or far from the wheel 2 relative to the fastener 3, the sensing post 311 is in a tight state P1 or a loose state P2. When the sensing post 311 is in the loose state P2, the pressure sensing unit 31 sends a loose signal to the warning unit 32, and the warning unit 32 sends a corresponding warning signal.

[0019] 3, 5 to 7, in another embodiment of the present invention, when the detection pole 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 pole 311 is in the loose state P2, the pressure sensing unit 31 stops transmitting the tight signal to the warning unit 32, and the warning unit 32 transmits a warning signal corresponding to the tight signal after it no longer receives the tight signal. Alternatively, the warning unit 32 can be configured to transmit a warning signal corresponding to the elapse of the warning display time after the pressure sensing unit 31 stops transmitting the tight signal. This prevents the warning unit 32 from receiving the signal incorrectly and avoids misreporting. In addition, the looseness sensor module 30 can set a transmission interval time, so that the pressure sensing unit 31 transmits a tightness signal at a regular time based on the transmission interval time, thereby avoiding problems such as excessive power consumption and low continuity of the looseness sensor module 30. The transmission interval time can be set to once per minute, once per two minutes, once per three minutes, etc.

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

[0021] It should also be noted that the looseness sensor module 30 can be installed directly between the nut 3a and the surface of the wheel 2. However, if there is not a sufficient flat surface at the position of the nut 3a or wheel 2 corresponding to the looseness sensor module 30, the looseness sensor module 30 can also be tightly sandwiched from both sides, and an auxiliary washer can also be installed on one side of the nut 3a adjacent to the looseness sensor module 30. Alternatively, an auxiliary washer can be installed on one side of the wheel 2 adjacent to the looseness sensor module 30. An auxiliary washer can also be installed on either one side of the nut 3a adjacent to the looseness sensor module 30 or on the surface of the wheel 2. In this way, a sufficient flat support structure can be provided, allowing the looseness sensor module 30 to be tightly sandwiched from both sides.

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

[0023] The circuit board 50 is disposed within the outer shell 20. In one embodiment, the circuit board 50 includes a processor 51. The processor 51 is coupled to the loose 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, and mainly carries electronic devices such as the loose sensor module 30 and the power supply components 40, as well as necessary chips, such as a touch control induction chip, an oscillator, and the processor 51, for integrating signals between the electronic devices.

[0024] In one embodiment, the signal transmission antenna 60 is mounted on the circuit board 50 and coupled to the processor 51 and the vehicle man-machine interface 4. The signal transmission antenna 60 is used to transmit a warning signal to the vehicle man-machine interface 4, which receives the warning signal and transmits corresponding wheel looseness information to the user. This allows the user to understand that the fasteners 3 are not tightly screwed in based on the wheel looseness information. The signal transmission antenna 60 has an installation height H from the circuit board 50, which is 0.2 cm to 2 cm. A suitable 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 similar to the metal wheel. Therefore, the electromagnetic signals transmitted and received by the signal transmission antenna 60 are significantly affected by the metal shielding effect, resulting in unstable and ineffective signal transmission. Therefore, a monopole antenna is optimal for the signal transmission antenna 60 of the present invention. The transmission frequency of the signal transmission antenna 60 can be 2.4 GHz, 315 MHz, or 433 MHz. Since the detection device of the present invention receives signals from the tire pressure gauge at the vehicle man-machine interface 4, the signal frequency may or may not be the same as that of the tire pressure gauge, depending on the design needs.

[0026] In one embodiment, the position module 70 is provided in the outer hull 20 and coupled to the processor 51. The position module 70 corresponds to the position of the wheel 2 on which the wheel looseness detection device 1 is installed, and records the position information. The position information is transmitted to the vehicle man-machine interface 4 through the processor 51 and can be confirmed by the user. The position information may be, for example, that the wheel looseness detection devices 1 for No. 1 and No. 2 are placed on the left front wheel, the wheel looseness detection devices 1 for No. 3 and No. 4 are placed on the right front wheel, the wheel looseness detection devices 1 for No. 5 and No. 6 are placed on the left rear wheel, and the wheel looseness detection devices 1 for No. 7 and No. 8 are placed on the right rear wheel, etc. This allows the vehicle man-machine interface 4 to clearly know which wheel 2 has generated an alarm based on the source of the signal.

[0027] In one embodiment, the state control module 80 is provided in 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. The state control module 80 is also 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 in the upper shell 21 and is coupled to the processor 51 and the state control module 80. When a user triggers 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 an off state, a detection state, or a sleep state. In this embodiment, the trigger control module 90 has a capacitive trigger structure. The user only needs to place his / her finger on the outer shell 20 and match it to the position of the trigger control module 90. Depending on the touch state, such as touching for 1 second, touching for 3 seconds, touching for 10 seconds, or touching once, twice, or three times, different trigger commands can be generated and different operations can be requested from the processor 51.

[0029] Light emitting module 100 is provided in upper shell 21 and is coupled to processor 51 and state control module 80. Light emitting module 100 emits a corresponding light based on the off state, detection state, or sleep state of wheel looseness detection device 1, allowing the user to know the actual operating state of wheel looseness detection device 1 from the light. For example, a continuous light indicates that wheel looseness detection device 1 is in the detection state, and a flashing light indicates that wheel looseness detection device 1 is in the sleep state.

[0030] In one embodiment, the tire detection module 110 is provided in 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 correspondingly outputs a tire rotation signal or a tire stop signal. When the tire detection module 110 outputs a tire rotation signal, the state control module 80 receives the tire rotation signal and controls the loose wheel detection device 1 to enter a detection state. When the tire detection module 110 outputs a tire stop signal, the state control module 80 receives the tire stop signal and controls the loose wheel detection device 1 to enter a sleep state.

[0031] In one embodiment, the temperature detection module 120 is mounted 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, and 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 an overheating condition of the wheel 2, it sends a temperature warning signal to the processor 51. The processor 51 sends a temperature warning signal to the vehicle man-machine interface 4 inside the vehicle through the signal transmission antenna 60 to alert the driver. In addition, the temperature detection module 120 used to monitor and control the temperature of the wheel 2 does not require very accurate temperature detection capabilities, so it can be installed directly inside the outer shell 20. Further temperature compensation is performed using the temperature transmitted by the outer shell 20 to obtain the actual temperature of the wheel 2. Alternatively, a metal piece can be installed to penetrate the outer shell 20 and be in contact with the temperature detection module 120 and the wheel 2, respectively. The metal piece's rapid heat conduction ability allows the temperature detection module 120 to sense the temperature of the wheel 2 relatively accurately.

[0032] In one embodiment, the directional indicator element 130 is provided on the upper shell 21, and when the fasteners 3 are screwed and fixed, the directional indicator element 130 focuses on the mark 2b on the wheel 2. In this embodiment, the number of fasteners 3 is two or more, and the number of wheel looseness detection devices 1 is also two or more. When all of the multiple fasteners 3 are screwed and fixed, the directional indicator elements 130 of two adjacent wheel looseness detection devices 1 are focused on each other. Therefore, if the two adjacent directional indicator elements 130 are not focused on each other when the vehicle has not yet started or is stopped, the user or driver can know that the fasteners 3 have already loosened.

[0033] 4 shows an example of an embodiment of the present invention, in which the direction indicator 130 is shaped like an arrow, making it easy for the user to identify. When the user turns the nut 3a and tightly fastens the bolt 3b to the surface of the wheel 2, the user adjusts the position of the direction indicator 130 to focus on the mark 2b, and after the bolt 3b and the nut 3a are completely interlocked and fastened, the direction indicator 130 is also focused on the mark 2b and fixed. In this way, if the nut 3a loosens during rotation, the user can easily see that the position of the direction indicator 130 has shifted and the mark 2b is no longer in focus. In addition, the two wheel looseness detection devices 1 of the present invention are installed on two adjacent bolts 3b on the wheel 2, and the two focal points of the direction indicator elements 130 are aligned with each other. However, if the position of the direction indicator elements 130 is shifted and the user visually observes that the focal points of the two direction indicator elements 130 are not aligned with each other, this means that the nut 3a may have loosened and shifted position, thereby achieving the same purpose of confirming the direction.

[0034] The steps for performing the detection are described below.

[0035] After the washer 10 connected to the loosening sensor module 30 is placed between the nut 3a and the surface of the wheel 2 and the nut 3a is completely threaded onto the bolt 3b, the user touches the trigger control module 90. After a certain period of time (e.g., 3 or 10 seconds) has elapsed, the wheel loosening detection device 1 is activated. This means that the processor 51, loosening sensor module 30, and other electronic components are activated. The light-emitting module 100 also lights up for the same period of time, indicating that the user has activated the device. At this time, the loosening sensor module 30 is sandwiched between the nut 3a and the surface of the wheel 2, generating a normal operation signal and sending it to the processor 51. The processor 51 periodically transmits a normal operation signal to the vehicle man-machine interface 4 in the vehicle through the signal transmission antenna 60 to notify the driver in the vehicle that the engagement state of the wheel 2 is normal. In order to avoid excessive power consumption, the time interval for transmitting the normal operation signal to the vehicle man-machine interface 4 can be set to once per minute, once per two minutes, once per three minutes, etc.

[0036] While the detection is being monitored and controlled by the wheel looseness detection device 1, if the nut 3a moves away from its corresponding position on the surface of the wheel 2 due to loosening, rotation, structural damage, etc., even if it is only a slight separation, the looseness sensor module 30 will detect it and send a looseness signal to the warning unit 32 or stop sending a tightness signal. The warning unit 32 outputs a warning signal to the processor 51 when it receives the loosening signal or when a certain time (which can be set to 1 second, 5 seconds, 30 seconds, or 2 minutes, etc.) has elapsed since it stopped receiving the tight signal. The processor 51 also transmits a warning signal to the vehicle man-machine interface 4 inside the vehicle through the signal transmission antenna 60, and the vehicle man-machine interface 4 notifies the driver by means of sound, vibration, light, etc. that the wheel 2 has become loose and that the vehicle should be stopped for inspection.

[0037] It should be noted that the loosening sensor module 30 can notify the processor 51 of two different change states in different ways, when the nut 3a is securely fastened and when it is loosened. This satisfies the technical requirements of the present invention, and does not necessarily require a decision as to whether or not to emit a signal.

[0038] The vehicle man-machine interface 4 is installed in the vehicle and transmits information to and from the user's communication device via wireless transmission. The communication device is a communication device or tablet PC equipped with a Bluetooth (registered trademark) interface, and the user can connect to the vehicle man-machine interface 4 through the communication device to automatically upload monitoring, control, and detection information via the vehicle man-machine interface 4. The short-range wireless communication module is the medium for information transmission between the vehicle man-machine interface 4 and the communication device, and the long-range wireless communication module is the medium for information transmission between the communication device and the cloud.

[0039] The vehicle man-machine interface 4 may be a vehicle computer, an external main unit, a tablet computer, a mobile communication device, or may also include a short-range communication interface. The looseness sensor module 30 connects the signal transmission antenna 60 to the vehicle man-machine interface 4 and is also installed in an on-board diagnostics (OBD) system or connected to the vehicle's controller area network (CAN BUS) to determine whether the looseness is due to human error or component aging. The short-range wireless communication module is a Bluetooth communication interface, and the long-range wireless communication module includes General Packet Radio Service (GPRS), cellular networks, and millimeter wave (mmWave) interfaces.

[0040] This embodiment will be described with an example. When the looseness sensor module 30 is not subjected to pressure from an external force and enters a detection stop state, the user touches the trigger control module 90 to perform a trigger operation (for example, touching for a certain period of time), which outputs a trigger signal to the processor 51, causing the wheel looseness detection device 1 controlled by the state control module 80 to enter a sleep state or directly enter an off state. When the looseness sensor module 30 is pressed by an external force and enters a detection state, the processor 51 determines that a trigger error has occurred, and the wheel looseness 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 a tightly fastened force and a certain period of time (e.g., 10 seconds) has passed, the state control module 80 automatically controls the wheel looseness detection device 1 to change from the sleep state or off state to the detection state. At the same time, the light emitting module 100 also emits light and flashes for 1 to 3 seconds, notifying the user that the wheel looseness detection device 1 has entered the detection state.

[0042] Moreover, the state control module 80 can also control the loose wheel detection device 1 to automatically enter a sleep state. For example, when the loose wheel detection device 1 detects that the tire has been stationary and inactive for a certain period of time, it will automatically enter the sleep state, and when the tire starts rotating again, it will automatically enter the detection state.

[0043] Of course, each wheel looseness detection device 1 can input the position of its corresponding wheel 2 into the vehicle man-machine interface 4 in advance via the position module 70. For example, the monitoring and control detection devices No. 1 and No. 2 are installed on the left front wheel, the monitoring and control detection device No. 3 and No. 4 on the right front wheel, the monitoring and control detection device No. 5 and No. 6 on the left rear wheel, and the monitoring and control detection device No. 7 and No. 8 on the right rear wheel, etc. This allows the vehicle man-machine interface 4 to clearly know which wheel 2 has generated an alarm based on 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 looseness detection device 1 of the present invention is integrated with the vehicle man-machine interface 4 through the signal transmission antenna 60. This allows the driver to know the threaded state of the wheel 2 at any time through the vehicle man-machine interface 4 while driving.

[0049] (3) The upper extension 211, the lower extension 221, and the fitting portion 12 of the present invention are designed with a head (wide portion) and a neck (narrow portion) shape, which effectively prevents the outer shell 20 from being shaken off and losing its fixed connection with the washer 10, thereby achieving the effect of stably attaching the washer 10 and the outer shell 20.

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

[0051] (5) The state control module 80 and trigger control module 90 of the present invention allow the user to more conveniently and easily control the operation state of the wheel looseness detection device 1. Moreover, the light emitting module 100 allows the user to more clearly and directly understand the real-time operation state of the wheel looseness detection device 1.

[0052] (6) The directional indication relationship between the direction indicating component 130 and the mark 2b of the present invention allows 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 looseness detection device installed on a wheel, The wheel is provided with a fastening hole; A fastening component is inserted through the fastening hole and fixed thereto, and the wheel looseness detection device includes a washer, an outer shell, a looseness sensor module, a power supply component, and a direction display component, The washer has a through hole, and the fastening component is inserted through the through hole to fix the washer. the outer shell comprises an upper outer shell and a lower outer shell, the upper outer shell having an upper extension portion, the lower outer shell having a lower extension portion, the upper extension portion and the lower extension portion being combined with each other and connected and fixed to the washer, The loosening sensor module includes a pressure sensing unit installed between the upper extension portion and the lower extension portion, and when the fastening part is tightly fastened and a surface of the wheel is pressed, the pressure sensing unit detects a tightness force, and when the pressure sensing unit detects a loss of the tightness force, the loosening sensor module issues a warning signal; the power supply component is coupled to the looseness sensor module and provides power to the looseness sensor module; A wheel looseness detection device characterized in that the directional indicator component is provided on the upper outer shell, and when the fastening component is screwed and fixed, the directional indicator component focuses on a mark on the wheel.

2. 2. The wheel looseness detection device according to claim 1, wherein the looseness sensor module further comprises an alarm unit, the alarm unit and the pressure sensing unit are coupled together, and when the pressure sensing unit detects a loss of the tightness force, the alarm unit issues an alarm signal.

3. 3. The wheel looseness detection device of claim 2, wherein the lower shell further has a detection hole installed in the lower extension, the pressure sensing unit further has a detection post disposed in the detection hole, the detection post extends from the detection hole and contacts the surface of the wheel, the detection post is in a tight state or a loose state depending on whether the wheel is close to or far from the fastening part, when the detection post is in a tight state, the pressure sensing unit continues to send a tight signal to the warning unit, and the warning unit correspondingly sends a warning signal.

4. 4. The wheel looseness detection device according to claim 3, wherein the warning unit issues a warning signal when a warning display time has elapsed since the pressure sensing unit stopped issuing the tight signal.

5. 2. The wheel looseness detection device of claim 1, further comprising a circuit board mounted within the outer shell, the circuit board comprising a processor, the processor being coupled to the looseness sensor module, and the processor receiving and transmitting an alarm signal.

6. 6. The wheel looseness detection device of claim 5, further comprising a signal transmission antenna mounted on a circuit board and coupled to a processor, the signal transmission antenna transmitting a warning signal.

7. 7. The wheel looseness detection device according to claim 6, wherein the signal transmission antenna has an installation height from the circuit board, and the installation height is 0.2 cm to 2 cm.

8. 7. The wheel looseness detection device according to claim 6, wherein the signal transmission antenna is coupled to a vehicle man-machine interface, which receives the warning signal and transmits corresponding wheel looseness information to a user.

9. 9. The wheel looseness detection device according to claim 8, wherein the signal transmission antenna performs wireless transmission through the vehicle man-machine interface and a user's communication device to send corresponding wheel looseness information to the user, the communication device is coupled to the vehicle man-machine interface through a short-range wireless communication module, and the communication device is coupled to the cloud through a long-range wireless communication module.

10. 6. The wheel looseness detection device of claim 5, further comprising a location module, the location module being mounted on the outer shell and coupled to the processor, the location module corresponding to the location of the wheel on which the wheel looseness detection device is installed and recording location information.

11. 6. The wheel looseness detection device of claim 5, wherein the wheel looseness detection device further comprises a state control module, mounted on the outer shell and coupled to the processor, the state control module being used to control the off state, detection state, and sleep state of the wheel looseness detection device.

12. 12. The wheel looseness detection device of claim 11, further comprising a light emitting module disposed on the upper shell and coupled to the processor and the state control module, the light emitting module emitting a corresponding light according to the off state, detection state, or sleep state of the wheel looseness detection device.

13. 6. The wheel looseness detection device according to claim 5, further comprising a temperature detection module, the temperature detection module being provided on the outer shell and coupled to the processor, the temperature detection module being used to detect the temperature of the wheel, and when the temperature of the wheel exceeds a temperature standard value, the temperature detection module being able to output a temperature warning signal to the processor.

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