Tire pressure sensor capable of replacing a valve assembly according to different use requirements

Patent metadata

Field	Value
Publication number	US-11400773-B2
Application number	US-202016913738-A
Country	US
Kind code	B2
Filing date	Jun 26, 2020
Priority date	Dec 26, 2018
Publication date	Aug 2, 2022
Grant date	Aug 2, 2022

Abstract

The present invention relates to the field of tire pressure detection technologies, and discloses a tire pressure sensor, including: a sensor assembly provided with a through hole; a valve assembly including a valve rod, a valve cover mounted to one end of the valve rod, a rod sleeve sleeved between two ends of the valve rod and a fastener connected to the other end of the valve rod through threads, one of the fastener and the valve rod passing through the through hole, and the fastener and the valve rod clamping the sensor assembly, where there are at least two sets of valve assemblies, the at least two sets of the valve assemblies being alternatively connected to the sensor assembly, a rod sleeve of one of the at least two sets of the valve assemblies being made of a metal material, and a rod sleeve of the other of the at least two sets of the valve assemblies being made of a rubber material. The at least two sets of valve assemblies with different specifications may alternately be connected to the sensor assembly, and a user may mount, according to requirements, a valve assembly that meets the requirements.

First claim

What is claimed is:

1. A tire pressure sensor ( 100 ), comprising:
a sensor assembly ( 10 ) provided with a through hole ( 126 );
a valve assembly ( 20 ) comprising a valve rod ( 22 ), a valve cover ( 23 ) mounted to one end of the valve rod ( 22 ), a rod sleeve ( 24 ) sleeved between two ends of the valve rod ( 22 ) and a fastener ( 21 ) connected to the other end of the valve rod ( 22 ) through threads, one of the fastener ( 21 ) and the valve rod ( 22 ) passing through the through hole ( 126 ), and the fastener ( 21 ) and the valve rod ( 22 ) clamping the sensor assembly ( 10 );
the valve assembly ( 20 ) rotatable relative to the sensor assembly ( 10 ), wherein
there are at least two sets of the valve assemblies ( 20 ), the at least two sets of the valve assemblies ( 20 ) being alternatively connected to the sensor assembly ( 10 ), a rod sleeve ( 24 ) of one of the at least two sets of the valve assemblies ( 20 ) being made of a metal material, and a rod sleeve ( 24 ) of the other of the at least two sets of the valve assemblies ( 20 ) being made of a rubber material.

2. The tire pressure sensor ( 100 ) according to claim 1 , wherein the sensor assembly ( 10 ) comprises a base ( 11 ) and a mounting stand ( 12 ) connected to the base ( 11 ), the base ( 11 ) being configured to fit a rim, and the mounting stand ( 12 ) being provided with the through hole ( 126 ).

3. The tire pressure sensor ( 100 ) according to claim 2 , wherein the mounting stand ( 12 ) is provided with a groove ( 123 ), the through hole ( 126 ) being in communication with the groove ( 123 ), and the valve assembly ( 20 ) being inserted into the groove ( 123 ).

4. The tire pressure sensor ( 100 ) according to claim 3 , wherein the mounting stand ( 12 ) comprises a first surface ( 120 ) and a second surface ( 121 ) that are disposed opposite to each other;
the groove ( 123 ) being provided on the first surface ( 120 ), and the groove ( 123 ) comprising a groove bottom ( 124 ), the groove bottom ( 124 ) being provided with the through hole ( 126 ) penetrating through the second surface ( 121 );
the valve assembly ( 20 ) further comprises a fastener ( 21 ), and the valve rod ( 22 ) is provided with a connecting portion ( 211 );
the valve rod ( 22 ) abutting against the groove bottom ( 124 ), one end that is of the connecting portion ( 211 ) and that faces away from the valve rod ( 22 ) passing through the through hole ( 126 ) and being connected to the fastener ( 21 ) through threads, and the fastener ( 21 ) abutting against the second surface ( 121 ).

5. The tire pressure sensor ( 100 ) according to claim 3 , wherein the mounting stand ( 12 ) comprises a first surface ( 120 ) and a second surface ( 121 ) that are disposed opposite to each other;
the groove ( 123 ) being provided on the first surface ( 120 ), and the groove ( 123 ) comprising a groove bottom ( 124 ), the groove bottom ( 124 ) being provided with the through hole ( 126 ) penetrating through the second surface ( 121 );
the valve assembly ( 20 ) further comprises a fastener ( 21 ), the fastener ( 21 ) comprising a limiting portion ( 210 ) and a connecting portion ( 211 ) connected to the limiting portion ( 210 );
the limiting portion ( 210 ) abutting against the second surface ( 121 ), and one end that is of the connecting portion ( 211 ) and that is away from the limiting portion ( 210 ) passing through the through hole ( 126 ) and being connected to the valve rod ( 22 ) through threads, and the valve rod ( 22 ) abutting against the groove bottom ( 124 ).

6. The tire pressure sensor ( 100 ) according to claim 5 , wherein the valve rod ( 22 ) is provided with a screw hole ( 2203 ) aligned with the through hole ( 126 ), the connecting portion ( 211 ) being connected to the screw hole ( 2203 ) through threads.

7. The tire pressure sensor ( 100 ) according to claim 4 , wherein the second surface ( 121 ) is provided with a strengthened piece ( 1210 ), the strengthened piece ( 1210 ) abutting between the limiting portion ( 210 ) and the second surface ( 121 ).

8. The tire pressure sensor according to claim 7 , wherein the mounting stand ( 12 ) further comprises a third surface ( 122 ) connected between the first surface ( 120 ) and the second surface ( 121 ), the third surface ( 122 ) being provided with a slot ( 1220 );
a connecting piece ( 1211 ) that is attached to the third surface ( 122 ) extending from the strengthened piece ( 1210 ), a holding piece ( 1212 ) that is inserted into the slot ( 1220 ) extending from the connecting piece ( 1211 ).

9. The tire pressure sensor ( 100 ) according to claim 8 , wherein the holding piece ( 1212 ) is provided with a barb ( 1213 ), the barb ( 1213 ) abutting against a side wall of the slot ( 1220 ).

10. The tire pressure sensor ( 100 ) according to claim 4 , wherein the groove bottom ( 124 ) is a curved surface, and the valve rod ( 22 ) may rotate along the groove bottom ( 124 ).

11. The tire pressure sensor ( 100 ) according to claim 10 , wherein the valve rod ( 22 ) comprises a mounting portion ( 220 ), one end of the mounting portion ( 220 ) being hemispherical and abutting against the groove bottom ( 124 ).

12. The tire pressure sensor ( 100 ) according to claim 10 , wherein the groove ( 123 ) further comprises a first limiting surface ( 125 ) connected to the groove bottom ( 124 ); and
a second limiting surface ( 2202 ) is provided between two ends of the mounting portion ( 220 );
the groove ( 123 ) being provided with the second limiting surface ( 2202 ), and the first limiting surface ( 125 ) abutting against the second limiting surface ( 2202 ), so that the valve rod ( 22 ) may rotate relative to the sensor assembly ( 10 ) about a preset axis (O), the preset axis (O) being normal to the first limiting surface ( 125 ) or the second limiting surface ( 2202 ).

13. The tire pressure sensor ( 100 ) according to claim 12 , wherein the through hole ( 126 ) is a waist-shaped hole, the waist-shaped hole being normal to the preset axis (O) in a length direction.

14. The tire pressure sensor ( 100 ) according to claim 10 , wherein the second surface ( 121 ) has a same radian as the groove bottom ( 124 ).

15. The tire pressure sensor ( 100 ) according to claim 1 , wherein the base ( 11 ) comprises a case bottom ( 110 ) and an upper case ( 111 ), the upper case ( 111 ) and the case bottom ( 110 ) being connected by laser welding, and the case bottom ( 110 ) and the upper case ( 111 ) forming a cavity;
the cavity being configured to mount a circuit board ( 13 ), a battery ( 14 ) and an antenna ( 15 ), the circuit board ( 13 ), the battery ( 14 ) and the antenna ( 15 ) forming a transmitting board.

16. The tire pressure sensor ( 100 ) according to claim 1 , wherein the valve rod ( 22 ) comprises a central axis (S), the central axis (S) passing through the center of gravity of the sensor assembly ( 10 ).

17. The tire pressure sensor ( 100 ) according to claim 16 , wherein one side of two opposite sides of the sensor assembly ( 10 ) being provided with a battery ( 14 ), the central axis (S) being located between the two sides of the sensor assembly ( 10 ), and the central axis (S) being closer to the side that is of the sensor assembly ( 10 ) and that is provided with the battery ( 14 ).

18. The tire pressure sensor ( 100 ) according to claim 1 , wherein the rod sleeve ( 24 ) made of metal comprises a valve seal ring ( 240 ), a nut gasket ( 241 ) and a nut ( 242 ), the valve seal ring ( 240 ), the nut gasket ( 241 ) and the nut ( 242 ) being sleeved on the valve rod ( 22 ) in sequence, and am

Assignees

• Autel Intelligent Tech Corp Ltd

Inventors

• Luo Yongliang
• He Yunhui

Classifications

• B60C23/0494 Primary

  Valve stem attachments positioned inside the tyre chamber · CPC title

• B60C23/0408

  transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver · CPC title

• B60C29/02

  Connection to rims · CPC title

• B60C29/005

  characterised by particular features of the valve stem · CPC title

• B60C23/04 Primary

  mounted on the wheel or tyre · CPC title