Centrifugal tire pressure sensor

Abstract

The utility model relates to a centrifugal tire pressure sensor, which comprises a body, an outer shell, a transfer retaining nut and a leather cup bottom pad, the body comprises an inner shell, and the lower end part of the inner shell is provided with a circumferentially distributed triangular retaining notch; the transfer retaining nut is a non-standard hexagonal nut, and retaining teeth matched with the retaining notches in position and shape are distributed on the upper surface of the transfer retaining nut in the circumferential direction. A clamping edge protruding outwards is arranged at the lower end of the shell, a clamping groove concave inwards in the circumferential direction is formed in the upper portion of the inner wall of the leather cup bottom pad, and the shell and the leather cup bottom pad are detachably connected through matching of the clamping edge and the clamping groove. According to the centrifugal tire pressure sensor, the transfer retaining nut is additionally arranged to be matched with the design of the one-way notch in the lower end of the inner shell, and the anti-dismantling structure is fully shielded, so that the possibility that the sensor is screwed and dismantled by hands and the anti-dismantling structure is easily found is reduced, and the use safety of the centrifugal tire pressure sensor serving as external equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tire pressure monitoring, in particular to a centrifugal tire pressure sensor. Background Art

[0002] During vehicle driving, excessively high or low tire pressure can affect vehicle safety and comfort. A tire pressure monitoring device can automatically monitor tire pressure in real time and sound an alarm when the tire pressure is too low to ensure driving safety. The sensors used in tire pressure monitoring devices can be divided into piezoelectric sensors, piezoresistive sensors, vibration sensors, centrifugal capacitance sensors, and electromagnetic sensors based on their sensing principle. Piezoelectric, piezoresistive, and vibration pressure sensors are often used in built-in tire pressure sensors due to their thick sensing modules, high deformation accuracy, and high overall cost. Centrifugal capacitance sensors and electromagnetic sensors are often used in external tire pressure sensors due to their low cost, replaceable modules, and easy maintenance. External tire pressure sensors are installed on the tire by replacing the valve cap, which has the advantages of simple installation and easy removal. However, they also have the disadvantage of being easily disassembled and stolen. Utility Model Content

[0003] The technical problem to be solved by the present invention is: to overcome the defect of existing external centrifugal tire pressure sensor products that they can be quickly disassembled and stolen, and to provide a centrifugal tire pressure sensor with an anti-theft structure. Under the premise of still using the external installation form, by adding a transfer stop nut and a one-way notch design at the lower end of the inner shell, and fully shielding the anti-dismantling structure, the possibility of the sensor being disassembled by hand and the anti-dismantling structure being easily discovered is reduced, thereby improving its safety as an external device.

[0004] The centrifugal tire pressure sensor includes a sensor body, which also includes an outer shell wrapped around the outer shell, a transfer stop nut arranged below the body and a leather cup bottom pad detachably installed at the lower end of the outer shell, wherein the body includes an inner shell, and the lower end of the inner shell is provided with a circumferentially arranged triangular stop notch; the transfer stop nut is a non-standard hexagonal nut, and the upper surface of the transfer stop nut is circumferentially provided with stop teeth that are adapted to the position and shape of the stop notch; the lower end of the outer shell is provided with an outwardly protruding snapping edge, and the upper part of the inner wall of the leather cup bottom pad is provided with a circumferentially concave snapping groove, and the outer shell and the leather cup bottom pad are detachably connected through the cooperation of the snapping edge and the snapping groove.

[0005] Furthermore, an embedding groove is provided on the outer wall of the inner shell, and a clamping edge adapted to the embedding groove is provided on the inner wall of the outer shell.

[0006] Furthermore, the main body also includes a main control board and a battery for powering the main control board. A battery compartment for accommodating the battery is provided on the top of the inner shell, and a component cavity for accommodating the main control board is formed inside the inner shell. An isolation cylinder connected to the component cavity is formed in the lower center of the inner shell, and a rubber air guide tube is provided in the isolation cylinder.

[0007] Furthermore, the lower end of the air duct extends into the isolation tube, the cover plate at the upper end of the air duct covers the centrifugal pressure sensor module integrated on the main control board, and the edge of the cover plate is adhered to the outer periphery of the centrifugal pressure sensor.

[0008] Furthermore, the main control board is integrated with a capacitive pressure sensor module, a signal amplification circuit module, a microprocessor, a wireless data transmission module, a gain antenna and a power supply module. The output end of the centrifugal pressure sensor is connected to the input end of the microprocessor via the signal amplification circuit module, the microprocessor is serially connected to the wireless data transmission module, the gain antenna is connected to the wireless data transmission module, and the battery output is respectively supplied with DC3.3V-5V operating voltage to the centrifugal pressure sensor, microprocessor and wireless data transmission module via the power supply module.

[0009] The utility model discloses a centrifugal tire pressure sensor, which overcomes the defect of existing external centrifugal tire pressure sensor products that can be quickly disassembled and stolen. Under the premise of still using the external installation form, it adds a transfer stop nut with a one-way notch design at the lower end of the inner shell, and fully shields the anti-dismantling structure, thereby reducing the possibility of the sensor being disassembled by hand and the anti-dismantling structure being easily discovered, thereby improving its safety as an external device. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The following is a further description of a centrifugal tire pressure sensor of the present invention in conjunction with the accompanying drawings:

[0011] Figure 1 This is a schematic diagram of the planar structure of the centrifugal tire pressure sensor;

[0012] Figure 2 yes Figure 1 A top-down three-dimensional structural diagram;

[0013] Figure 3 yes Figure 1 A three-dimensional structure diagram looking upwards;

[0014] Figure 4 yes Figure 2 Exploded view;

[0015] Figure 5 yes Figure 3 Exploded view;

[0016] Figure 6 yes Figure 1 AA section view;

[0017] Figure 7 This is a wireframe diagram of the logical structure of the main control board of the centrifugal tire pressure sensor.

[0018] In the picture:

[0019] 1 - Main body; 11 - Inner shell, 12 - Main control board, 13 - Battery, 14 - Air guide tube; 111 - Retaining notch, 112 - Embedding groove, 113 - Battery compartment, 114 - Component cavity, 115 - Isolation cylinder, 121 - Capacitive pressure sensor module, 122 - Signal amplification circuit module, 123 - Microprocessor, 124 - Wireless data transmission module, 125 - Gain antenna, 126 - Power module, 141 - Cover plate;

[0020] 2-housing; 21-card edge, 22-card edge;

[0021] 3- transfer anti-retraction nut; 31- anti-retraction tooth;

[0022] 4-leather bowl bottom pad; 41-clamping groove 41. DETAILED DESCRIPTION

[0023] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; they can refer to direct connection or indirect connection through an intermediate medium; they can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0024] In the description of the present invention, it should be understood that the terms "left", "right", "front", "back", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0025] The technical solution of the present invention is further described below with specific embodiments, but the protection scope of the present invention is not limited to the following embodiments.

[0026] Implementation method 1: Figures 1 to 6As shown, the centrifugal tire pressure sensor includes a sensor body 1, which also includes an outer shell 2 wrapped around the outside of the body 1, a transit stop nut 3 arranged below the body 1 and a leather cup bottom pad 4 detachably installed at the lower end of the outer shell 2, wherein the body 1 includes an inner shell 11, and the lower end of the inner shell 11 is provided with a circumferentially arranged triangular stop notch 111; the transit stop nut 3 is a non-standard hexagonal nut, and the upper surface of the transit stop nut 3 is circumferentially provided with stop teeth 31 that are adapted to the position and shape of the stop notch 111; the lower end of the outer shell 2 is provided with an outwardly protruding snapping edge 21, and the upper part of the inner wall of the leather cup bottom pad 4 is provided with a circumferentially concave snapping groove 41, and the outer shell 2 and the leather cup bottom pad 4 are detachably connected through the cooperation of the snapping edge 21 and the snapping groove 41. If you rotate the sensor counterclockwise by hand, the outer shielding shell will only rotate idle, and the inner body will not withdraw the thread. Even if the outer shell is removed and the body is rotated counterclockwise by hand, the one-way notch at the lower end of the inner shell will be pressed by the convex teeth of the transfer stop nut, and the thread cannot be withdrawn.

[0027] Embodiment 2: This centrifugal tire pressure sensor comprises an inner shell 11 with an outer wall having a recess 112, and an inner wall of an outer shell 2 with a snap-fitting edge 22 that mates with the recess 112. The outer shell is fitted onto the main body, with the snap-fitting edge pushed into the recess to achieve a rotatable connection between the two. The main body 1 also includes a main control board 12 and a battery 13 that powers the main control board 12. A battery compartment 113 is provided at the top of the inner shell 11 for accommodating the battery 13. A component cavity 114 for accommodating the main control board 12 is formed within the inner shell 11. A separating tube 115 is formed in the lower center of the inner shell 11, communicating with the component cavity 114. A rubber air duct 14 is housed within the separating tube 115. The lower end of the air duct 14 extends into the separating tube 115. A cover plate 141 at the upper end of the air duct 14 covers the centrifugal pressure sensor module integrated with the main control board 12. The edge of the cover plate 141 is adhered to the outer periphery of the centrifugal pressure sensor. After installation, the tire pressure is collected by the air intake through the air nozzle, air guide tube, and cover plate covering the centrifugal pressure sensor module. The remaining structures and components are as described in embodiment 1 and will not be described again.

[0028] Implementation method 3: Figure 7As shown, the main control board 12 of this centrifugal tire pressure sensor integrates a capacitive pressure sensor module 121, a signal amplification circuit module 122, a microprocessor 123, a wireless data transmission module 124, a gain antenna 125, and a power supply module 126. The output of the centrifugal pressure sensor 121 is connected to the input of the microprocessor 123 via the signal amplification circuit module 122. The microprocessor 123 is serially connected to the wireless data transmission module 124. The gain antenna 125 is connected to the wireless data transmission module 124. The output of the battery 13 is supplied to the centrifugal pressure sensor 121, the microprocessor 123, and the wireless data transmission module 124 via the power supply module 126 to provide a DC3.3V-5V operating voltage. After tire pressure collection, signal processing and transmission are realized. The tire pressure data signals emitted by the four wheels are ultimately used for unified reception and display by a receiver installed in the vehicle. The remaining structures and components are as described in Implementation 1 and will not be repeated here.

[0029] When using: first put the leather cup bottom gasket on the wheel hub air nozzle, with the bowl of the leather cup bottom gasket facing up, and then use a special wrench with an unconventional size opening that matches the transfer check nut to screw into the bottom end of the air nozzle, then screw the main body onto the air nozzle, and use a special wrench to rotate the transfer check nut clockwise until the teeth bite into the one-way notch at the lower end of the inner shell, buckle up the outer shell and push it hard until the clamping edge is embedded in the main body groove, pull up one side of the upper edge of the leather cup bottom gasket, use the clamping groove to clamp a part of the clamping edge, press this position and rotate the outer shell to remove it, completing the concealed full protection of the transfer check nut and the main body; when disassembling, press down the leather cup bottom gasket to separate it from the outer shell, and the transfer check nut will be exposed. First use a special wrench to rotate the transfer check nut counterclockwise downward, then pinch or remove the outer shell, and rotate the main body clockwise to remove the thread.

[0030] This centrifugal tire pressure sensor overcomes the defect of existing external centrifugal tire pressure sensor products that can be quickly disassembled and stolen. It still uses the external installation form. By adding a transfer stop nut and a one-way notch design at the lower end of the inner shell, and fully shielding the anti-dismantling structure, it reduces the possibility of the sensor being disassembled by hand and the anti-dismantling structure being easily discovered, thereby improving its safety as an external device.

[0031] The above description shows the main features, basic principles, and advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments or examples, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, the above embodiments or examples should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0032] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A centrifugal tire pressure sensor, comprising a sensor body (1), characterized in that: It also includes a shell (2) wrapped around the body (1), a transfer stop nut (3) arranged below the body (1), and a leather cup bottom pad (4) detachably mounted on the lower end of the shell (2), wherein: The body (1) comprises an inner shell (11), the lower end of the inner shell (11) is provided with a circumferentially arranged triangular anti-recoil notch (111); the transit anti-recoil nut (3) is a non-standard hexagonal nut, and the upper surface of the transit anti-recoil nut (3) is circumferentially provided with anti-recoil teeth (31) that are adapted to the position and shape of the anti-recoil notch (111); the lower end of the outer shell (2) is provided with an outwardly protruding clamping edge (21), and the upper part of the inner wall of the leather cup bottom pad (4) is provided with a circumferentially concave clamping groove (41), and the outer shell (2) and the leather cup bottom pad (4) are detachably connected by the cooperation of the clamping edge (21) and the clamping groove (41).

2. The centrifugal tire pressure sensor according to claim 1, wherein: An embedding groove (112) is provided on the outer wall of the inner shell (11), and a clamping edge (22) adapted to the embedding groove (112) is provided on the inner wall of the outer shell (2).

3. The centrifugal tire pressure sensor according to claim 2, wherein: The body (1) further comprises a main control board (12) and a battery (13) for supplying power to the main control board (12); a battery compartment (113) for accommodating the battery (13) is provided at the top of the inner shell (11); a component cavity (114) for accommodating the main control board (12) is formed inside the inner shell (11); an isolation cylinder (115) in communication with the component cavity (114) is formed at the center of the lower portion of the inner shell (11); a rubber air guide tube (14) is provided inside the isolation cylinder (115).

4. The centrifugal tire pressure sensor according to claim 3, wherein: The lower end of the air guide tube (14) extends into the isolation tube (115), and the cover plate (141) at the upper end of the air guide tube (14) covers the centrifugal pressure sensor module integrated on the main control board (12), and the edge of the cover plate (141) is adhered to the outer periphery of the centrifugal pressure sensor.

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