External battery-powered tire pressure monitoring device

Abstract

An external battery-powered tire pressure monitoring device, comprising a tire pressure monitoring sensor and a valve mechanism; the upper portion of the valve mechanism is provided with an external power supply assembly (17), and the lower end of the valve mechanism is connected to a built-in tire pressure sensor assembly (18); the valve mechanism is further internally provided with a conduction part for achieving electrical connection between the external power supply assembly (17) and the built-in tire pressure sensor assembly (18); the external power supply assembly (17) is arranged on a valve cap (4); the valve cap (4) connects a negative electrode of the external power supply assembly (17) to a valve body (2) by means of threads; a negative electrode of the built-in tire pressure sensor assembly (18) is connected to the valve body (2); and, by means of the conduction part, the valve cap (4) connects a positive electrode of the external power supply assembly (17) to a positive electrode of the built-in tire pressure sensor assembly (18). The tire pressure monitoring device facilitates replacement of power supply batteries.

Description

External battery-powered tire pressure monitoring device TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile tire pressure detection equipment manufacturing, in particular to an external battery-powered tire pressure monitoring device which is reasonable in structure, easy to disassemble and assemble, and can effectively prolong the tire pressure data monitoring period. BACKGROUND

[0002] When driving on the road, driving safety is the primary consideration, and tire pressure has a significant impact on vehicle conditions, having a critical influence on driving safety. Tires need to have normal tire pressure to allow the vehicle to run smoothly, and excessively high or low tire pressure can cause tire blowout or damage, seriously affecting the stability of vehicle driving and threatening the safety of pedestrians' lives and property. 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 parked before it can be measured, and the real-time changes in tire pressure during driving cannot be known. If the tire is abnormal during driving, the driver cannot immediately know and respond.

[0003] The tire pressure sensors on the market are generally divided into built-in tire pressure sensors and external tire pressure sensors. The external tire pressure sensor is installed outside the tire valve, which is easy to be damaged. In order to detect the abnormal sealing of the air valve core, the function is lost, and there is a hidden danger of accidental air leakage. The built-in tire pressure sensor is equipped with a valve and installed inside the tire, which 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 describes a built-in tire pressure sensor, which is powered by a solar cell assembly installed on a solar valve cap to supply power to each functional module of the tire pressure sensing device. The solar power module is installed on the outer wall surface of the solar valve cap. The document discloses a monitoring box and a valve stem assembly, and the solar valve cap assembly is a shape-modified and enlarged volume valve cap. A wedge-shaped groove is formed in the lower part of the valve stem, and a cap compartment is formed between the outer wall and the inner wall of the solar valve cap for placing the functional modules of the tire pressure sensing device. The outer wall is inlaid with a display screen, function buttons and a solar power module. One end of the wire inlaid in the wall of the valve stem is connected to the functional modules in the cap compartment through a conductive contact, and the other end of the wire is connected to the functional modules in the monitoring box, thereby realizing the communication between the functional modules in the solar valve cap and the functional modules in the monitoring box. The implementation of this scheme requires a substantial change in the structure of multiple components in the valve device, and the finished product cannot be adapted to the valve and related auxiliary accessories products in the national standard, which has poor practicality and complex structure. The exposed wire is easy to short-circuit with the metal-made valve device body, resulting in poor product stability. TECHNICAL PROBLEM

[0005] The present application is directed to the shortcomings and deficiencies in the prior art, and proposes an external battery-powered tire pressure monitoring device which can significantly prolong the monitoring time of the built-in tire pressure monitoring sensor under the premise of meeting the requirements of the national standard for valve core products, and has reasonable structure, easy disassembly and reassembly, and reliability and stability. Technical solutions

[0006] An external battery-powered tire pressure monitoring device is provided with a tire pressure monitoring sensor and a valve core mechanism, the valve core mechanism includes a valve core, a valve core body, a valve core locking nut and a valve core cap, the valve core is placed in the valve core body, the valve core locking nut and the valve core cap are respectively connected with the upper part of the valve core body through threads, and the valve core cap is fixed above the valve core locking nut, characterized in that the upper part of the valve core mechanism is provided with an external power supply assembly, the lower end is connected with a built-in tire pressure sensor assembly, and the valve core mechanism is further 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 valve core cap; the valve core cap connects the negative electrode of the external power supply assembly with the valve core body through threads, and the negative electrode of the built-in tire pressure sensor assembly is connected with the valve core body, and the valve core cap connects the positive electrode of the external power supply assembly with the positive electrode of the built-in tire pressure sensor assembly through the conduction component.

[0007] The external power supply assembly in the present application is provided with a battery and a battery cover, the battery is mounted on the battery cover, further, the battery cover is connected with the upper end of the valve core cap through threads or buckling, the battery cover presses the positive electrode of the battery on the upper end of the conduction component to realize electrical connection.

[0008] The conduction component in the present application includes a first contact electrode sheet arranged on the upper end surface of the valve core cap, a first conductor embedded in the valve core cap and penetrating through the main body of the valve core cap, and a second contact electrode sheet arranged on the lower end surface of the valve core cap, the upper end and the lower end of the first conductor are respectively connected with the first contact electrode sheet and the second contact electrode sheet, and an insulating layer is arranged between the first conductor and the main body of the valve core cap.

[0009] The conduction component in the present application further includes a third contact electrode sheet arranged on the upper end of the valve core body, a second conductor penetrating through the valve core body from top to bottom, and a fourth contact electrode sheet arranged on the lower end surface of the valve core body, wherein the upper and lower ends of the second conductor are respectively in conduction with the third contact electrode sheet and the fourth contact electrode sheet, and an insulating layer is arranged between the second conductor and the valve core body; after the valve core cap is assembled to the upper end of the valve core body, the second contact electrode sheet and the third contact electrode sheet are in contact and realize electrical signal conduction.

[0010] The built-in tire pressure sensor assembly includes a sensor and a sensor circuit, a positive electrode of the sensor circuit is connected with a fourth contact electrode sheet at a lower end of the valve body, further, the sensor circuit is installed in a sensor cavity of the valve body inside the tire, and the positive electrode of the sensor circuit is pressed against the surface of the cavity, the fourth contact electrode sheet is connected with the positive electrode contact in the sensor circuit, so that the positive electrode of the power supply is connected with the sensor circuit, the negative electrode of the sensor is connected with the sensor circuit by pressing against the surface of the cavity, and the surface of the sensor cavity is provided with a plating layer so that the surface of the cavity can conduct electricity.

[0011] The sensor cavity is formed by extending the structure of the lower end of the valve body, the original air hole is opened on the side surface and does not communicate with the sensor installation cavity, the sensor cover is provided with an air hole which communicates with the sensor detection hole, the sensor cover seals the sensor cavity, the sensor circuit is arranged in the sensor cavity, and water vapor and the like is prevented from entering the sensor circuit to cause corrosion, and further, the sensor completes signal output through a wireless communication circuit.

[0012] In the application, the valve body, the valve cap and the battery cover are provided with plating layers so that they are not easy to be oxidized and can maintain the conductivity. Advantages

[0013] Compared with the prior art, the application can realize electrical connection between the external power supply assembly outside the valve mechanism and the built-in sensor connected with the lower end of the valve body by respectively arranging the valve body, the valve cap, the internal embedded conductor and the corresponding contact electrode sheet, and can ensure the insulation of any component in the valve mechanism and avoid electric leakage, the structure is reasonable, the arranged structure meets the requirements of the national standard of the valve product, can replace the existing product, and can significantly improve the service period and service life of the built-in tire pressure sensor. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 is a structural schematic diagram of the application.

[0015] Fig. 2 is a sectional view of the application.

[0016] Fig. 3 is a structural schematic diagram of the valve cap and the external power supply assembly in the application.

[0017] Fig. 4 is a structural schematic diagram of the valve cap in the application.

[0018] Fig. 5 is a schematic diagram of the sensor in the application.

[0019] Fig. 6 is a schematic diagram of the conductive contact of the sensor circuit in the application.

[0020] Fig. 7 is a principle block diagram of the application.

[0021] Reference signs: valve core 1, valve body 2, valve 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, 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 supply contacts 23, sensor cavity 24, sensor cover 25. Best mode of the present application

[0022] As shown in FIG. 1 and FIG. 2, the present example provides an external battery-powered tire pressure monitoring device, which is provided with a tire pressure monitoring sensor and a valve mechanism, the valve mechanism includes a valve core 1, a valve body 2, a valve nut 3 and a valve cap 4, the valve core 1 is placed in the valve body 2, the valve nut 3 and the valve cap 4 are respectively connected with the upper part of the valve body 2 through threads, and the valve cap 4 is fixed above the valve nut 3, the upper part of the valve mechanism is provided with an external power supply assembly 17, the lower end is connected with a built-in tire pressure sensor assembly 18, and the valve mechanism is also provided with a conductive part for realizing electrical connection between the external power supply assembly and the built-in tire pressure sensor assembly;

[0023] The external power supply assembly of the present example is arranged on the valve cap 4; the valve cap 4 connects the negative electrode of the external power supply assembly with the valve body 2 through threads, the negative electrode of the built-in tire pressure sensor assembly is connected with the valve body 2, and the valve cap 4 connects the positive electrode of the external power supply assembly with the positive electrode of the built-in tire pressure sensor assembly through the conductive part;

[0024] As shown in FIG. 3, the external power supply assembly of the present example is provided with a battery 5 and a battery cover 6, the battery 5 is installed on the battery cover 6, further, the battery cover 6 is connected with the upper end of the valve cap 4 through threads or buckling, the conductive spring 19 on the inner side of the battery cover 6 connects the negative electrode of the battery, and the battery cover 6 presses the positive electrode of the battery on the upper end of the conductive part to realize electrical connection;

[0025] As shown in FIG. 4, the conduction component of the present example comprises a first contact electrode sheet 7 arranged on the upper end surface of the valve cap 4, a first conductor 8 embedded in the valve cap 4 and penetrating through the valve cap body, a second contact electrode sheet 9 arranged on the lower end surface of the valve cap 4, the upper and lower ends of the first conductor 8 being connected to the first and second contact electrode sheets 7 and 9 respectively, and an insulating layer 10 arranged between the first conductor 8 and the valve cap 4 body. In the present example, the first contact electrode sheet 7 is in the shape of a circular sheet, and the second contact electrode sheet 9 is in the shape of a circular ring. In order to ensure the effective connection and necessary insulation between the first conductor 8 and the first contact electrode sheet 7, the lower side of the first contact electrode sheet 7 is provided with the insulating layer 10 except for the contact area at the upper end of the first conductor 8.

[0026] As shown in FIG. 2, the conduction component of the present example further comprises a third contact electrode sheet 11 arranged on the upper end of the valve body 2, a second conductor 12 penetrating through the valve body 2 from top to bottom, and a fourth contact electrode sheet 13 arranged on the lower end surface of the valve body 2, the upper and lower ends of the second conductor 12 being connected to the third and fourth contact electrode sheets 11 and 13 respectively, and an insulating layer 10 arranged between the second conductor 12 and the valve body 2. After the valve cap 4 is assembled on the upper end of the valve body 2, the second and third contact electrode sheets 9 and 11 are in contact and realize the conduction of electrical signals.

[0027] The built-in tire pressure sensor assembly of the present example comprises a sensor 14 and a sensor circuit 15, the positive pole of the sensor circuit 15 being connected to the fourth contact electrode sheet 13 at the lower end of the valve body 2. Further, the sensor circuit 15 of the built-in tire pressure sensor assembly is installed in a sensor cavity 24 of the valve body 2 inside the tire, and the positive pole of the sensor circuit is pressed against the surface of the cavity. The fourth contact electrode sheet 15 is in contact with the positive pole contact of the sensor circuit, so that the positive pole of the power supply is connected to the sensor circuit 15. The negative pole of the sensor is in contact with the surface of the cavity by pressing, so that the negative pole of the power supply is connected to the sensor circuit 15. The surface of the sensor cavity 24 is provided with a plating layer, so that the surface of the cavity can conduct electricity.

[0028] The sensor cavity 24 of the present example is formed by increasing the height of the original structure at the lower end of the valve body. The original air hole is opened on the side surface and does not communicate with the sensor cavity 24. The sensor cover 25 is provided with an air hole which communicates with the sensor detection hole. The sensor cover 25 seals the sensor cavity, and the sensor 14 is arranged in the sensor cavity 24 to prevent water vapor and the like from entering the sensor circuit and causing corrosion.

[0029] The valve body, valve cap and battery cover of the present example are provided with a plating layer to prevent oxidation and maintain electrical conductivity. Industrial applicability

[0030] Compared with the prior art, the application realizes electrical connection of the built-in sensor connected with the lower end of the valve body by respectively arranging the contact electrode sheet in the valve body, the valve cap, the inner embedded conductor and the corresponding contact electrode sheet, and ensures insulation of any part of the valve mechanism in the process, avoids electric leakage, has reasonable structure, and meets the national standard requirements of the valve product, can replace the existing product, and significantly improves the service period and service life of the built-in tire pressure sensor. SEQUENCE LISTING FREE CONTENT

[0031] SEQUENCE LISTING FREE CONTENT DESCRIPTION IS ENTERED HERE.

Claims

1. An external battery-powered tire pressure monitoring device, provided with a tire pressure monitoring sensor and a valve mechanism, the valve mechanism comprising a valve core, a valve body, a valve locking nut and a valve cap, the valve core being disposed in the valve body, the valve locking nut and the valve cap being respectively connected with the upper part of the valve body by threads, and the valve cap being fixed above the valve locking nut, characterized in that, The upper part of the valve mechanism is provided with an external power supply assembly, the lower end is connected with an internal tire pressure sensor assembly, the valve mechanism is further provided with a conducting part for realizing electrical connection between the external power supply assembly and the internal tire pressure sensor assembly; the external power supply assembly is arranged on the valve cap; the valve cap is screwed with the negative electrode of the external power supply assembly and the valve body, the negative electrode of the internal tire pressure sensor assembly is connected with the valve body, and the valve cap connects the positive electrode of the external power supply assembly with the positive electrode of the internal tire pressure sensor assembly through the conducting part.

2. [Amended according to Rule 26 15.09.2025] 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 mounted on the battery cover, the battery cover is connected with the upper end of the valve cap through screwing or buckling, and the positive electrode of the battery is pressed against the upper end of the conducting part to realize electrical connection.

3. [Amended according to Rule 26 15.09.2025] The external battery-powered tire pressure monitoring device according to claim 2, characterized in that, The conducting part comprises a first contact electrode plate arranged on the upper end surface of the valve cap, a first conductor embedded in the valve cap and penetrating through the valve cap body, and a second contact electrode plate arranged on the lower end surface of the valve cap, the upper end and the lower end of the first conductor are connected with the first contact electrode plate and the second contact electrode plate respectively, and an insulating layer is arranged between the first conductor and the valve cap body.

4. [Amended according to Rule 26 15.09.2025] The external battery-powered tire pressure monitoring device according to claim 3, characterized in that, The conducting part further comprises a third contact electrode plate arranged on the upper end of the valve body, a second conductor penetrating through the valve body from top to bottom, and a fourth contact electrode plate arranged on the lower end surface of the valve body, the upper and lower ends of the second conductor are in electrical connection with the third contact electrode plate and the fourth contact electrode plate respectively, an insulating layer is arranged between the second conductor and the valve body, and the second contact electrode plate is in contact with the third contact electrode plate after the valve cap is assembled on the upper end of the valve body to realize electrical signal conduction.

5. [Amended according to Rule 26 15.09.2025] The external battery-powered tire pressure monitoring device according to claim 4, characterized in that, The internal tire pressure sensor assembly comprises a sensor and a sensor circuit, and the positive electrode of the sensor circuit is connected with the fourth contact electrode plate at the lower end of the valve body.

6. The external battery-powered tire pressure monitoring device of claim 4, wherein, The sensor circuit of the internal tire pressure sensor assembly is mounted in a sensor cavity in the valve body inside the tire, and the positive electrode of the sensor circuit is pressed against the surface of the cavity, the fourth contact electrode plate is in contact with the positive electrode contact in the sensor circuit, the positive electrode of the power supply is connected with the sensor circuit, the negative electrode of the sensor is in contact with the surface of the cavity by pressing, the negative electrode of the power supply is connected with the sensor circuit, and the surface of the sensor cavity is provided with a plating layer to make the surface of the cavity conductive.

7. The external battery-powered tire pressure monitoring device of claim 6, wherein, The sensor cavity is formed by extending the structure of the lower end of the valve body, the original air hole is opened on the side surface and does not communicate with the sensor mounting cavity, the sensor cover is provided with an air hole communicating with the sensor detection hole, the sensor cover seals the sensor cavity, the sensor circuit is arranged in the sensor cavity, and water vapor and the like are prevented from entering the sensor circuit to cause corrosion.

8. The external battery-powered tire pressure monitoring device of claim 1, wherein, The valve body, the valve cap and the battery cover are provided with a plating layer to resist oxidation and have conductivity.

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