Tire pressure sensor with elastic telescopic valve assembly

Patent metadata

Field	Value
Publication number	US-11254172-B2
Application number	US-202016913614-A
Country	US
Kind code	B2
Filing date	Jun 26, 2020
Priority date	Dec 26, 2018
Publication date	Feb 22, 2022
Grant date	Feb 22, 2022

Abstract

The invention relates to the field of tire pressure detection technologies, and discloses a tire pressure sensor including: a valve assembly including a mounting portion and an elastic telescopic structure mounted to the mounting portion, the elastic telescopic structure elastically extending and retracting on at least one side of the mounting portion; a sensor assembly having two opposite clamping surfaces, at least one of the two clamping surfaces being provided with a locking hole, the mounting portion being located between two of the clamping surfaces, and the elastic telescopic structure being inserted into the locking hole. After the elastic telescopic structure is shortened, the mounting portion of the valve assembly may be inserted between the two clamping surfaces. When the mounting portion of the valve assembly is located between the two clamping surfaces, the elastic telescopic structure may be extended and inserted into the locking hole automatically, so that the valve assembly and the sensor assembly may be installed conveniently, and no additional tools are required.

First claim

What is claimed is:

1. A tire pressure sensor ( 100 ), comprising:
a valve assembly ( 10 ) comprising a mounting portion ( 113 ), a rod portion ( 111 ), a rod sleeve ( 13 ) and an elastic telescopic structure ( 14 ), the mounting portion ( 113 ) and the rod portion ( 111 ) being connected, the rod sleeve ( 13 ) being sleeved on the rod portion ( 111 ), the elastic telescopic structure ( 14 ) being mounted to the mounting portion ( 113 ), and the elastic telescopic structure ( 14 ) elastically extending and retracting on at least one side of the mounting portion ( 113 );
a sensor assembly ( 20 ) having two opposite clamping surfaces ( 2233 ), at least one of the two clamping surfaces ( 2233 ) being provided with a locking hole ( 2242 ), the mounting portion ( 113 ) being located between the two clamping surfaces ( 2233 ), and the elastic telescopic structure ( 14 ) being inserted into the locking hole ( 2242 ), wherein
there are at least two sets of the valve assemblies ( 10 ), any of the at least two sets of the valve assemblies ( 10 ) being alternatively connected to the sensor assembly ( 20 ), a rod sleeve ( 13 ) of one of the at least two sets of the valve assemblies ( 10 ) being made of a metal material, and a rod sleeve ( 13 ) of the other of the at least two sets of the valve assemblies ( 10 ) being made of a rubber material.

2. The tire pressure sensor ( 100 ) according to claim 1 , wherein the mounting portion ( 113 ) is in contact with the two clamping surfaces ( 2233 ), respectively.

3. The tire pressure sensor ( 100 ) according to claim 1 , wherein the valve assembly ( 10 ) comprises a valve rod ( 11 ), the valve rod ( 11 ) comprising the mounting portion ( 113 ) and the rod portion ( 111 ); and
the elastic telescopic structure ( 14 ) may extend and retract along a radial direction (S) of the valve rod ( 11 ), and the clamping surface ( 2233 ) is parallel to an axial direction ( 0 ) of the valve rod ( 11 ).

4. The tire pressure sensor ( 100 ) according to claim 3 , wherein the sensor assembly ( 20 ) has a first surface ( 2230 ), the first surface ( 2230 ) being provided with a groove ( 2232 ), the groove ( 2232 ) having the two clamping surfaces ( 2233 ), and
the mounting portion ( 113 ) is inserted into the groove ( 2232 ).

5. The tire pressure sensor ( 100 ) according to claim 4 , wherein at least one of the clamping surfaces ( 2233 ) provided with the locking hole ( 2242 ) is provided with a guide groove ( 2235 ), the guide groove ( 2235 ) being disposed between the locking hole ( 2242 ) and the first surface ( 2230 ) along the axial direction (S).

6. The tire pressure sensor ( 100 ) according to claim 5 , wherein in a direction along the axial direction (S) and toward the locking hole ( 2242 ) from the first surface ( 2230 ), a depth of the guide groove ( 2235 ) gradually decreases.

7. The tire pressure sensor ( 100 ) according to claim 4 , wherein the mounting portion ( 113 ) is provided with a mounting hole ( 117 ) provided along the radial direction (S);
the elastic telescopic structure ( 14 ) being mounted to the mounting hole ( 117 ).

8. The tire pressure sensor ( 100 ) according to claim 7 , wherein the elastic telescopic structure ( 14 ) comprises a pin ( 141 ) and a first elastic member ( 142 );
the pin ( 141 ) being sleeved in the mounting hole ( 117 ), and the pin ( 141 ) retracting into or extending out of the mounting hole ( 117 ) along the radial direction (S); and
the first elastic member ( 142 ) being configured to provide a first elastic force for causing the pin ( 141 ) to extend out of the mounting hole ( 117 ).

9. The tire pressure sensor ( 100 ) according to claim 8 , wherein the two clamping surfaces ( 2233 ) are both provided with the locking hole ( 2242 ), the mounting holes ( 117 ) are provided with two openings on the mounting portion ( 113 ), and there are two pins ( 141 );
each of the pins ( 141 ) extending out of or retracting into the mounting hole ( 117 ) from a corresponding opening of the mounting hole ( 117 ) along the radial direction (S).

10. The tire pressure sensor ( 100 ) according to claim 9 , wherein the first elastic member ( 142 ) abuts between the two pins ( 141 ).

11. The tire pressure sensor ( 100 ) according to claim 8 , wherein the first elastic member ( 142 ) is a first compression spring.

12. The tire pressure sensor ( 100 ) according to claim 8 , wherein the elastic telescopic structure ( 14 ) further comprises a bushing ( 140 ) mounted to the mounting hole ( 117 );
the bushing ( 140 ) having an inner cavity ( 1400 ) disposed along the radial direction (S), and the pin ( 140 ) being sleeved in the inner cavity ( 1400 ).

13. The tire pressure sensor ( 100 ) according to claim 4 , wherein the valve rod ( 11 ) further comprises a vent portion ( 112 ) and a mouth portion ( 110 ), the mounting portion ( 113 ), the vent portion ( 112 ), the rod portion ( 111 ) and the mouth portion ( 110 ) being arranged along the axis (O) in sequence; and
the valve rod ( 11 ) is provided with a first vent hole ( 114 ) and a second vent hole ( 115 ) which are in communication with each other, an opening of the first vent hole ( 114 ) being provided at the mouth portion ( 110 ), and an opening of the second vent hole ( 115 ) being provided at the vent portion ( 112 );
the second vent hole ( 112 ) being located outside the groove ( 2232 ).

14. The tire pressure sensor ( 100 ) according to claim 13 , wherein the second vent hole ( 115 ) is disposed along the radial direction (S).

15. The tire pressure sensor ( 100 ) according to claim 13 , wherein the valve assembly ( 10 ) further comprises a valve cover ( 12 );
the valve cover ( 12 ) being connected to the mouth portion ( 110 ) through threads.

16. The tire pressure sensor ( 100 ) according to claim 1 , wherein the rod sleeve ( 13 ) made of metal comprises a seal ring ( 130 ), a gasket ( 131 ) and a nut ( 132 );
the seal ring ( 130 ), the gasket ( 131 ) and the nut ( 132 ) being sleeved on the rod portion ( 111 ) in sequence, the nut ( 130 ) and the rod portion ( 111 ) being connected through threads, the gasket ( 131 ) being clamped between the nut ( 132 ) and the seal ring ( 130 ), and the seal ring ( 130 ) being clamped between the vent portion ( 112 ) and the gasket ( 131 ).

17. The tire pressure sensor ( 100 ) according to claim 16 , wherein the tire pressure sensor ( 100 ) further comprises a metal rod member ( 30 ), the metal rod member ( 30 ) being configured to pass through the second vent hole ( 115 ).

18. The tire pressure sensor ( 100 ) according to claim 4 , wherein the sensor assembly ( 20 ) comprises a base ( 21 ) and a bracket ( 220 ) connected to the base ( 21 );
the base ( 21 ) being configured to fit a rim, and a transmitting plate being provided in the base ( 21 ); and
the bracket ( 220 ) having the first surface ( 2230 ).

19. The tire pressure sensor ( 100 ) according to claim 18 , wherein the base ( 21 ) comprises an upper case ( 211 ) and a case bottom ( 210 );
the upper case ( 211 ) being connected to the bracket ( 220 ), and the case bottom ( 210 ) being configured to fit the rim; and
the upper case ( 211 ) and the case bottom ( 210 ) being connected through laser welding, and the upper case ( 211 ) and the case bottom ( 210 ) being connected to form a cavity for receiving the transmitting plate.

20. The tire pressure sensor ( 100 ) according to claim 18 , wherein the bracket ( 220 ) comprises a bracket body ( 223 ) and a locking structure ( 224 ) connected to the bracket body ( 223

Assignees

• Autel Intelligent Tech Corp Ltd

Inventors

• Luo Yongliang
• Liu Yingjun

Classifications

• B60C23/04 Primary

  mounted on the wheel or tyre · CPC title

• B60C29/02

  Connection to rims · CPC title

• B60C23/0494 Primary

  Valve stem attachments positioned inside the tyre chamber · CPC title