Tire pressure monitoring device powered by external battery

Abstract

The invention relates to the technical field of automobile tire pressure detection equipment manufacturing, in particular to a tire pressure monitoring device powered by an external battery, which is reasonable in structure, simple and convenient to disassemble and assemble and capable of effectively prolonging the tire pressure data monitoring period, and is characterized in that an external power supply component is arranged at the upper part of an inflating valve mechanism, and a built-in tire pressure sensor component is connected to the lower end of the inflating valve mechanism; the inflating valve mechanism is also internally provided with a conduction component for realizing electrical connection between the external power supply assembly and the built-in tire pressure sensor assembly; the external power supply assembly is arranged on the inflating valve cap; the negative electrode of the external power supply assembly is connected with the inflating valve body by the inflating valve cap through threads, the negative electrode of the built-in tire pressure sensor assembly is connected with the inflating valve body, and the positive electrode of the external power supply assembly is connected with the positive electrode of the built-in tire pressure sensor assembly by the inflating valve cap through a conducting component.

Description

Technical field:

[0001] The invention relates to the technical field of automobile tire pressure detection equipment manufacturing, and in particular to an external battery-powered tire pressure monitoring device which has a reasonable structure, is easy to assemble and disassemble, and can effectively extend the tire pressure data monitoring period. Background technology:

[0002] When drivers are driving on the road, driving safety is the primary consideration, and tire pressure has a great impact on the vehicle condition and has a critical influence on driving safety. The tire must have normal tire pressure to make the vehicle run smoothly. Too high or too low tire pressure may cause a tire blowout or puncture, seriously affecting the stability of the vehicle and threatening the safety of life and property of passers-by. Therefore, the importance of tire pressure monitoring for driving safety is self-evident. However, the traditional method of measuring tire pressure requires the vehicle to be stopped before it can be carried out. It is impossible to know the real-time changes in the tire pressure of the vehicle while driving. If the tire is abnormal while driving, the driver cannot immediately know and respond.

[0003] At present, tire pressure sensors on the market are generally divided into built-in tire pressure sensors and external tire pressure sensors. External tire pressure sensors are installed outside the tire valve and are easily damaged. In order to detect the air pressure, the valve core cannot be sealed normally and loses its function, which poses a safety hazard of accidental air leakage. Built-in tire pressure sensors have their own valves and are installed inside the tire. It is not easy to replace the battery and has a short service life. Because the built-in battery is usually heavy, it affects the static and dynamic balance of the wheel.

[0004] Patent document CN111267559A records a built-in tire pressure sensor, which uses a solar cell assembly installed on a solar valve cap to supply power and store electricity for various functional modules of the tire pressure sensing device, wherein the solar power generation module is installed on the outer wall surface of the solar valve cap; the built-in sensing device disclosed in the document also includes a monitoring box and a valve stem assembly, wherein the solar valve cap assembly is a valve cap with improved shape and enlarged volume, and a wedge-shaped groove is provided at the lower part of the valve stem, and a cap compartment is formed in the hollow space between the outer wall and the inner wall of the solar valve cap for accommodating the functional modules of the tire pressure sensing device, and a display screen, functional buttons and a solar power generation module are embedded in the outer wall, and one end of a wire embedded in the valve stem wall is connected to the functional module in the cap compartment through a conductive contact, and the other end of the wire is connected to the functional module in the monitoring box, thereby realizing the connection between the functional module in the solar valve cap and the functional module in the monitoring box. The implementation of this plan requires significant structural changes to multiple components in the valve device. The finished product will not be able to adapt to the valves and related auxiliary accessories specified in the national standard. It has poor practicality and a complex structure. The exposed wires are easily short-circuited with the valve device body made of metal materials, resulting in poor product stability. Summary of the invention:

[0005] In view of the shortcomings and deficiencies in the prior art, the present invention proposes an external battery-powered tire pressure monitoring device that can significantly extend the monitoring working time of a built-in tire pressure monitoring sensor while complying with the national standard requirements for valve stem products, and has a reasonable structure, is easy to assemble and disassemble, and is reliable and stable.

[0006] The present invention is achieved by the following measures:

[0007] A tire pressure monitoring device powered by an external battery is provided with a tire pressure monitoring sensor and a valve mechanism, wherein the valve mechanism comprises a valve core, a valve body, a valve locking nut and a valve cap, the valve core is arranged in the valve body, the valve locking nut and the valve cap are respectively connected to the upper part of the valve body through threads, and the valve cap is fixed above the valve locking nut, characterized in that an external power supply component is arranged on the upper part of the valve mechanism, and a built-in tire pressure sensor component is connected to the lower end, and a conducting component for realizing electrical connection between the external power supply component and the built-in tire pressure sensor component is also provided in the valve mechanism; the external power supply component is arranged on the valve cap; the valve cap connects the negative pole of the external power supply component to the valve body through threads, the negative pole of the built-in tire pressure sensor component is connected to the valve body, and the valve cap connects the positive pole of the external power supply component to the positive pole of the built-in tire pressure sensor component through a conducting component.

[0008] The external power supply assembly described in the present invention is provided with a battery and a battery cover, and the battery is installed on the battery cover. Furthermore, the battery cover is connected to the upper end of the valve cap through threads or snap-fitting, and the battery cover presses the positive electrode of the battery against the upper end of the conductive component to achieve electrical connection.

[0009] The conductive component described in the present invention includes, from top to bottom, a first contact electrode sheet arranged on the upper end surface of the valve cap, a first conductor pre-buried in the valve cap and penetrating the valve cap body, and a second contact electrode sheet arranged on the lower end surface of the valve cap. The upper end and the lower end of the first conductor are respectively connected to the first contact electrode sheet and the second contact electrode sheet, and an insulating layer is provided between the first conductor and the valve cap body.

[0010] The conductive component of the present invention also includes a third contact electrode sheet arranged at the upper end of the valve body, a second conductor penetrating the valve body from top to bottom, and a fourth contact electrode sheet arranged on the lower end surface of the valve body, wherein the upper and lower ends of the second conductor are respectively conductively connected to the third contact electrode sheet and the fourth contact electrode sheet, and an insulating layer is provided between the second conductor and the valve body; after the valve cap is assembled to the upper end of the valve body, the second contact electrode sheet contacts the third contact electrode sheet and realizes electrical signal conduction.

[0011] The built-in tire pressure sensor assembly of the present invention includes a sensor and a sensor circuit, the positive pole of the sensor circuit is connected to the fourth contact electrode sheet at the lower end of the valve body. Furthermore, the sensor circuit in the built-in tire pressure sensor assembly is installed in the sensor cavity of the valve body located inside the tire, and the positive pole of the sensor circuit is pressed against the cavity surface, the fourth contact electrode sheet contacts the positive contact in the sensor circuit, so that the positive pole of the power supply is connected to the sensor circuit, and the negative pole of the sensor is pressed into contact with the cavity surface so that the negative pole of the power supply is connected to the sensor circuit, and the surface of the sensor cavity is provided with a coating so that the cavity surface can be conductive.

[0012] The sensor cavity described in the present invention is a cavity formed by extending the lower end structure of the valve body. The original air vent is opened on the side and is not connected to the sensor installation cavity. The sensor cover is provided with an air vent connected to the sensor detection hole. The sensor cover closes the sensor cavity. The sensor circuit is placed in the sensor cavity to prevent water vapor and the like from entering the sensor circuit and causing corrosion. Furthermore, the sensor completes the signal output via the wireless communication circuit.

[0013] In the present invention, the valve body, the valve cap and the battery cover are provided with a plating layer so that they are not easily oxidized and maintain conductive performance.

[0014] Compared with the prior art, the present invention respectively arranges the valve body, the valve cap, the internal embedded conductor and the corresponding contact electrode sheets, so that the external power supply component located outside the valve mechanism can realize electrical connection for the built-in sensor connected to the lower end of the valve body, and can ensure the insulation of any component in the valve mechanism during the process to avoid leakage. The structure is reasonable and the arranged structure meets the national standard requirements for valve products, can complete the replacement of existing products, and significantly improve the service life and service life of the built-in tire pressure sensor. Description of the drawings:

[0015] Attached Figure 1 It is a structural schematic diagram of the present invention.

[0016] Attached Figure 2 It is a cross-sectional view of the present invention.

[0017] Attached Figure 3 Schematic diagram of the structure of the valve cap and the external power supply assembly in the present invention. Figure 4 It is a structural schematic diagram of the valve cap in the present invention.

[0018] Attached Figure 5 Schematic diagram of the sensor of the present invention.

[0019] Attached Figure 6 It is a schematic diagram of conductive contacts of the sensor circuit of the present invention.

[0020] Attached Figure 7 It is a principle block diagram of the present invention.

[0021] Figure markings: valve core 1, valve body 2, valve locking nut 3, valve cap 4, battery 5, battery cover 6, first contact electrode sheet 7, first conductor 8, second contact electrode sheet 9, insulating layer 10, third contact electrode sheet 11, second conductor 12, fourth contact electrode sheet 13, sensor 14, sensor circuit 15, wheel hub 16, external power supply assembly 17, built-in tire pressure sensor assembly 18, conductive spring 19, antenna 20, air hole 21, energy storage element 22, sensor circuit positive and negative power contacts 23, sensor cavity 24, sensor cover 25. Specific implementation method:

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] Embodiment 1:

[0024] As attached Figure 1 And attached Figure 2 As shown, this example provides an external battery-powered tire pressure monitoring device, which is provided with a tire pressure monitoring sensor and a valve mechanism, wherein the valve mechanism comprises a valve core 1, a valve body 2, a valve locking nut 3 and a valve cap 4, the valve core 1 is placed in the valve body 2, the valve locking nut 3 and the valve cap 4 are respectively connected to the upper part of the valve body 2 via threads, and the valve cap 4 is fixed above the valve locking nut 3, an external power supply component 17 is provided on the upper part of the valve mechanism, and a built-in tire pressure sensor component 18 is connected to the lower end, and a conducting component for realizing electrical connection between the external power supply component and the built-in tire pressure sensor component is also provided in the valve mechanism;

[0025] In this example, the external power supply assembly is arranged on the valve cap 4; the valve cap 4 connects the negative electrode of the external power supply assembly to the valve body 2 via threads, the negative electrode of the built-in tire pressure sensor assembly is connected to the valve body 2, and the valve cap 4 connects the positive electrode of the external power supply assembly to the positive electrode of the built-in tire pressure sensor assembly via a conducting component;

[0026] As attached Figure 3 As shown, the external power supply assembly in this example is provided with a battery 5 and a battery cover 6. The battery 5 is mounted on the battery cover 6. Furthermore, the battery cover 6 is connected to the upper end of the valve cap 4 through threads or snap-fitting. The conductive spring sheet 19 on the inner side of the battery cover 6 is connected to the negative electrode of the battery. The battery cover 6 presses the positive electrode of the battery against the upper end of the conductive component to achieve electrical connection.

[0027] As attached Figure 4As shown, the conductive component in this example includes, from top to bottom, a first contact electrode sheet 7 arranged on the upper end surface of the valve cap 4, a first conductor 8 pre-buried in the valve cap 4 and penetrating the main body of the valve cap, and a second contact electrode sheet 9 arranged on the lower end surface of the valve cap 4. The upper end and the lower end of the first conductor 8 are respectively connected to the first contact electrode sheet 7 and the second contact electrode sheet 9. An insulating layer 10 is provided between the first conductor 8 and the main body of the valve cap 4. In this example, the first contact electrode sheet 7 is in the shape of a disc, and the second contact electrode sheet 9 is in the shape of a ring. In order to ensure effective connection and necessary insulation between the first conductor 8 and the first contact electrode sheet 7, the first contact electrode sheet 7 is provided with an insulating layer 10 on its lower side except for the contact area with the upper end of the first conductor 8.

[0028] As attached Figure 2 As shown, the conductive component in this example also includes a third contact electrode sheet 11 arranged at the upper end of the valve body 2, a second conductor 12 penetrating the valve body 2 from top to bottom, and a fourth contact electrode sheet 13 arranged at the lower end surface of the valve body 2, wherein the upper and lower ends of the second conductor 12 are respectively conductively connected to the third contact electrode sheet 11 and the fourth contact electrode sheet 13, and an insulating layer 10 is provided between the second conductor 12 and the valve body 2; after the valve cap 4 is assembled to the upper end of the valve body 2, the second contact electrode sheet 9 contacts the third contact electrode sheet 11 and realizes electrical signal conduction;

[0029] The built-in tire pressure sensor assembly in this example includes a sensor 14 and a sensor circuit 15, the positive electrode of the sensor circuit 15 is connected to the fourth contact electrode sheet 13 at the lower end of the valve body 2, further, the sensor circuit 15 in the built-in tire pressure sensor assembly is installed in the sensor cavity 24 of the valve body 2 located inside the tire, and the positive electrode of the sensor circuit is pressed against the cavity surface, the fourth contact electrode sheet 15 is in contact with the positive contact point in the sensor circuit, so that the positive electrode of the power supply is connected to the sensor circuit 15, the negative electrode of the sensor is pressed against the cavity surface so that the negative electrode of the power supply is connected to the sensor circuit 15, and the surface of the sensor cavity 24 is provided with a coating so that the cavity surface can be conductive;

[0030] The sensor cavity 24 described in this example is a cavity formed by raising the lower end structure of the original valve body. The original ventilation hole is opened on the side and is not connected to the sensor cavity 24. The sensor cover 25 is provided with a ventilation hole connected to the sensor detection hole. The sensor cover 25 closes the sensor cavity. The sensor 14 is placed in the sensor cavity 24 to prevent water vapor and the like from entering the sensor circuit and causing corrosion.

[0031] In this example, the valve body, the valve cap, and the battery cover are provided with a coating so that they are not easily oxidized and maintain conductive properties.

[0032] Compared with the prior art, the present invention respectively arranges the valve body, the valve cap, the internal embedded conductor and the corresponding contact electrode sheets, so that the external power supply component located outside the valve mechanism can realize electrical connection for the built-in sensor connected to the lower end of the valve body, and can ensure the insulation of any component in the valve mechanism during the process to avoid leakage. The structure is reasonable and the arranged structure meets the national standard requirements for valve products, can complete the replacement of existing products, and significantly improve the service life and service life of the built-in tire pressure sensor.

Claims

1. An external battery-powered tire pressure monitoring device, comprising a tire pressure monitoring sensor and a valve mechanism, wherein the valve mechanism comprises a valve core, a valve body, a valve locking nut, and a valve cap, wherein the valve core is disposed within the valve body, the valve locking nut and the valve cap are respectively connected to the upper portion of the valve body via threads, and the valve cap is fixed above the valve locking nut, characterized in that: An external power supply assembly is provided at the upper part of the valve mechanism, and the lower end is connected to the built-in tire pressure sensor assembly. The valve mechanism is also provided with a conductive component for realizing electrical connection between the external power supply assembly and the built-in tire pressure sensor assembly; the external power supply assembly is arranged on the valve cap; the valve cap connects the negative pole of the external power supply assembly to the valve body through threads, and the negative pole of the built-in tire pressure sensor assembly is connected to the valve body, and the valve cap connects the positive pole of the external power supply assembly to the positive pole of the built-in tire pressure sensor assembly through the conductive component.

2. The external battery-powered tire pressure monitoring device according to claim 1, characterized in that: The external power supply assembly is provided with a battery and a battery cover. The battery is installed on the battery cover. The battery cover is connected to the upper end of the valve cap via threads or snap-fits. The battery cover presses the positive pole of the battery against the upper end of the conductive component to achieve electrical connection.

3. The external battery-powered tire pressure monitoring device according to claim 2, characterized in that: The conductive component includes, from top to bottom, a first contact electrode sheet arranged on the upper end surface of the valve cap, a first conductor pre-buried in the valve cap and passing through the valve cap body, and a second contact electrode sheet arranged on the lower end surface of the valve cap. The upper end and lower end of the first conductor are respectively connected to the first contact electrode sheet and the second contact electrode sheet, and an insulating layer is provided between the first conductor and the valve cap body.

4. The external battery-powered tire pressure monitoring device according to claim 3, characterized in that: The conductive component also includes a third contact electrode sheet arranged at the upper end of the valve body, a second conductor running through the valve body from top to bottom, and a fourth contact electrode sheet arranged on the lower end surface of the valve body, wherein the upper and lower ends of the second conductor are respectively conductively connected to the third contact electrode sheet and the fourth contact electrode sheet, and an insulating layer is provided between the second conductor and the valve body; after the valve cap is assembled to the upper end of the valve body, the second contact electrode sheet contacts the third contact electrode sheet and realizes electrical signal conduction.

5. The external battery-powered tire pressure monitoring device according to claim 4, characterized in that: The built-in tire pressure sensor assembly includes a sensor and a sensor circuit, and the positive electrode of the sensor circuit is connected to the fourth contact electrode sheet at the lower end of the valve body.

6. The external battery-powered tire pressure monitoring device according to claim 4, characterized in that: The sensor circuit in the built-in tire pressure sensor assembly is installed in the sensor cavity where the valve body is located inside the tire, and the positive pole of the sensor circuit is pressed against the cavity surface. The fourth contact electrode sheet contacts the positive contact in the sensor circuit, so that the positive pole of the power supply is connected to the sensor circuit. The negative pole of the sensor is pressed into contact with the cavity surface, so that the negative pole of the power supply is connected to the sensor circuit. The surface of the sensor cavity is provided with a coating, so that the cavity surface is conductive.

7. The external battery-powered tire pressure monitoring device according to claim 6, characterized in that: The sensor cavity is formed by extending the lower end structure of the valve body. The original air vent is opened on the side and is not connected to the sensor installation cavity. A air vent is provided on the sensor cover and is connected to the sensor detection hole. The sensor cover closes the sensor cavity, and the sensor circuit is placed in the sensor cavity to prevent water vapor and the like from entering the sensor circuit and causing corrosion.

8. The external battery-powered tire pressure monitoring device according to claim 1, characterized in that: The valve body, valve cap and battery cover are provided with a coating to resist oxidation and provide electrical conductivity.

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