Fixing structure for pneumatic tire pressure sensor, and tire wheel with protector for pneumatic tire pressure sensor

• US 20070169545A1
• Filed: 12/12/2006
• Published: 07/26/2007
• Est. Priority Date: 01/20/2006
• Status: Active Grant

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Aoki, Hidekatsu
• Granted Patent: US 7,487,668 B2
• Time in Patent Office: Days
• US Class Current: 73/146.500
• CPC Class Codes: B60B 21/00 Rims non-metallic B60B5/00; of high resiliency B60B9/00; capable of carrying more than one tyre B60B11/04; multiple rims on a single wheel body B60B11/06; of multi-part type B60B25/00; metal tyres B60C
• CPC Class Codes: B60C 23/0408 transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
• CPC Class Codes: B60C 23/0494 Valve stem attachments positioned inside the tyre chamber

Abstract

A rim (1) of a tire wheel (TW) comprises a drum (1a) and inboard and outboard tire bead sheets (1b, 1c) extending radially from both sides of the drum (1a). A bead portion (3a) of a pneumatic tire (3) is press bonded to the outboard tire bead sheet (1b). A pneumatic tire pressure sensor (2) is fixed to the rim (1). When the pneumatic tire (3) is mounted on the tire wheel (TW), or when the pneumatic tire (3) is removed from the tire wheel (TW), a protector (4) which is fixed to the rim (1) protects the pneumatic tire pressure sensor (2) such that the bead portion (3a) removed from the outboard tire bead sheet (1b) does not interfere with the pneumatic tire pressure sensor (2).

Claims

1. A fixing structure for fixing a pneumatic tire pressure sensor onto a rim of a tire wheel, on which a pneumatic tire is mounted, comprising:

a protector which is fixed to the rim in the vicinity of the pneumatic tire pressure sensor and protects the pneumatic tire pressure sensor from interference with the pneumatic tire.

2. The fixing structure for a pneumatic tire pressure sensor as defined in claim 1, wherein the pneumatic tire comprises bead portions, the rim comprises a drum, and inboard and outboard tire bead sheets extending radially from the both sides of the drum, to which the bead portions of the pneumatic tire are respectively press bonded, the drum comprises a first cylindrical part, an annular wall part extending radially from an outboard edge of the first cylindrical part, and a second cylindrical part which connects the annular wall part to the outboard tire bead sheet, and the protector comprises a member which is fixed to the first cylindrical part and the annular wall part.

3. The fixing structure for a pneumatic tire pressure sensor as defined in claim 2, wherein the member comprises a pair of protecting members disposed on both sides of the pneumatic tire pressure sensor with respect to a rotation direction of the tire wheel.

4. The fixing structure for a pneumatic tire pressure sensor as defined in claim 3, wherein the pair of protecting members comprises a pair of wall members respectively formed in the shape of a substantially right triangle.

5. The fixing structure for a pneumatic tire pressure sensor as defined in claim 4, wherein a hypotenuse of the right triangle is formed to bulge outward.

6. The fixing structure for a pneumatic tire pressure sensor as defined in claim 4, wherein the pair of wall members are aligned on two parallel straight lines when viewed in a direction along a center line of the tire wheel.

7. The fixing structure for a pneumatic tire pressure sensor as defined in claim 6, wherein the pair of wall members are formed to have a dimension in a direction of the rotation of the tire wheel which gradually reduces as a distance from the first cylindrical part increases.

8. The fixing structure for a pneumatic tire pressure sensor as defined in claim 3, wherein the pair of protecting members comprises a pair of arc-shaped arm members.

9. The fixing structure for a pneumatic tire pressure sensor as defined in claim 2, wherein the member comprises an arc shaped arm member which straddles the pneumatic tire pressure sensor.

10. The fixing structure for a pneumatic tire pressure sensor as defined in claim 1, further comprising a dummy protector fixed to the rim on an opposite side of the center line of the tire wheel to the protector.

11. The fixing structure for a pneumatic tire pressure sensor as defined in claim 1, wherein the protector is molded integrally with the rim.

12. The fixing structure for a pneumatic tire pressure sensor as defined in claim 1, wherein the pneumatic tire pressure sensor is provided integrally with an air valve used for pressurizing and depressurizing the pneumatic tire.

13. A tire wheel comprising:

a rim on which a pneumatic tire and a pneumatic tire pressure sensor are installed; and

a protector which is fixed to the rim in the vicinity of the pneumatic tire pressure sensor and protects the pneumatic tire pressure sensor from interference with the pneumatic tire.

14. The tire wheel as defined in claim 13, wherein the pneumatic tire comprises bead portions, the rim comprises a drum, and an inboard and outboard tire bead sheets extending radially from the both sides of the drum, to which the bead portions of the pneumatic tire are respectively press bonded, the drum comprises a first cylindrical part, an annular wall part extending radially from an outboard edge of the first cylindrical part, and a second cylindrical part which connects the annular wall part to the outboard tire bead sheet, and the protector comprises a member which is fixed to the first cylindrical part and the annular wall part.

15. The tire wheel as defined in claim 14, wherein the member comprises a pair of protecting members disposed on both sides of the pneumatic tire pressure sensor with respect to a rotation direction of the tire wheel.

16. The tire wheel as defined in claim 15, wherein the pair of the protecting members comprises a pair of wall members respectively formed in the shape of a substantially right triangle.

17. The tire wheel as defined in claim 16, wherein a hypotenuse of the right triangle is formed to bulge outward.

18. The tire wheel as defined in claim 16, wherein the pair of wall members are aligned on two parallel straight lines when viewed in a direction along a center line of the tire wheel.

19. The tire wheel as defined in claim 18, wherein the pair of wall members are formed to have a dimension in a direction of the rotation of the tire wheel which gradually decreases as a distance from the first cylindrical part increases.

20. The tire wheel as defined in claim 15, wherein the pair of protecting members comprises a pair of arc-shaped arm members.

21. The tire wheel as defined in claim 14, wherein the member comprises an arc shaped arm member which straddles the pneumatic tire pressure sensor.

22. The tire wheel as defined in claim 13, further comprising a dummy protector fixed to the rim on the opposite side of the center line of the tire wheel to the protector.

23. The tire wheel as defined in claim 13, wherein the protector is molded integrally with the rim.

24. The tire wheel as defined in claim 13, wherein the pneumatic tire pressure sensor is provided integrally with an air valve used for pressurizing and depressurizing the pneumatic tire.