Assembly for attaching a detection unit, in particular for detecting tyre pressure, to a rim

• US 7,257,998 B2
• Filed: 10/11/2005
• Issued: 08/21/2007
• Est. Priority Date: 10/12/2004
• Status: Active Grant

• Current Assignee: LDL Technology SAS
• Original Assignee: LDL Technology SAS
• Inventors: Luce, Dominique
• Primary Examiner(s): Lefkowitz; Edward
• Assistant Examiner(s): Allen; Andre J.
• Application Number:
  US11/247,317
• Publication Number:
  US 20060075812A1
• Time in Patent Office: 679 Days
• Field of Search: 731/468, 731/46, 731/464, 731/465
• US Class Current: 73/146.8
• 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

An assembly (M) of a detection unit (100) for placement inside a tire with a rim having a connection aperture (210) is provided. The assembly (M) can include a detection unit (100) for receiving detection components, a valve body (300), a seal (400) for providing a seal between the valve body (300) and the rim (200), and fastener (500) for holding the valve body (300) in position on the rim (200). One or more of the detection unit (100), the valve body (300), the fastener (500) for holding the valve body (300), or a combination thereof, is preformed to penetrate the connection aperture (210) so as to engage the connection aperture (210) when the assembly (M) is subjected to tangential stresses.

Claims

1. An assembly (M) of a detection unit (100) inside a tyre attached to the body (300) of a valve (V), the tyre having a rim (200), comprising:

a detection unit (100) receiving detection components,

a valve body (300),

a seal (400) for providing a seal between the valve body (300) and a rim (200),

means (500) for holding the valve body (300) in position on the rim (200) which is preformed with a connection aperture (210),

a module for connecting the detection unit (100) to the valve body (300), wherein at least one of the group consisting of the detection unit (100), the valve body (300), the means (500) for holding the valve body (300), or a combination thereof, is preformed to penetrate the connection aperture (210) so as to engage the connection aperture (210) when the assembly (M) is subjected to tangential stresses.

2. The assembly (M) according to claim 1, wherein said valve body (300) includes an external shoulder (310) with which said seal (400) comes into contact, with the holding means (500) being placed inside and coming into contact with an internal surface of the rim (200), in order to hold the seal (400) securely between the aperture (210) and the valve body (300).

3. The assembly (M) according to claim 1, wherein said seal (400) comes into contact with an external surface of the rim (200).

4. The assembly (M) according to claim 2, wherein said holding means (500) comprises a threaded connection between the valve body (300) and a nut that, coming into contact with the internal surface of the rim (200), holds, by means of a relative rotation of the threaded body (300) with respect to the nut, the seal (400) securely between the aperture (210) and the valve body (300).

5. The assembly (M) according to claim 2, wherein said external shoulder (310) is preformed so as to create surface (311) for axial contact with the internal surface of the rim (200) and opposing screwing forces, and a receiving space (312) in which the seal (400) can be deformed.

6. The assembly (M) according to claim 1, wherein the module for connecting the detection unit (100) to the valve body (300) includes a sleeve which engages the valve body (300), which sleeve has a low portion that is preformed not only to have an axial contact surface (510) for holding the valve body (300) on which it is screwed in position, but also to have a radial contact surface (520) which performs a cylindrical penetration in the connection aperture (210).

7. The assembly (M) according to claim 6, wherein said sleeve includes a head (540) with a shoulder (541) which acts as a contact surface for said detection unit (100).

8. The assembly (M) according to claim 6, wherein said sleeve is threaded so as to be screwed on the valve body (300).

9. The assembly (M) according to claim 7, further comprising a resilient means (600) that tends to hold the detection unit (100) in contact with the head (540).

10. The assembly (M) according to claim 9, wherein said head (540) is preformed at a level of its surface (541) in contact with the detection unit (100) to provide a corrugated portion cooperating with notches provided in the detection unit (100) so as to limit the rotational movements of the detection unit (100) with respect to said sleeve (500).

11. The assembly (M) according to claim 1, wherein said detection unit (100) comprises a receptacle (110) in which sensors (120) and the sensor elements (130) necessary for operation of sensor 120 are positioned, and a cover (140) closing said receptacle (110).

12. The assembly (M) according to claim 6, wherein an end of the sleeve penetrating the aperture (210) provided in the rim (200) is chamfered (530) at a level of an internal aperture of the rim 200.

13. The assembly (M) according to claim 6, wherein axial contact surface (510) and the radial contact surface (520) of the sleeve and the detection unit (100) coming into contact are preformed so as to form a curved contact surface to enable the detection unit (100) to come into contact with an internal surface of the rim (200).

14. An assembly (M) of a detection unit (200) for placement inside a tire having a rim (200), the assembly comprising:

a detection unit (100) having detection components;

a valve body (300);

a seal (400) located between the valve body (300) and a rim (200) having a connection aperture (210);

a fastener (500) to hold the valve body in position on the rim (200); and

wherein at least one of the group consisting of the detection unit (100), the valve body (300), the fastener (500), or a combination thereof, penetrates the connection aperture (210) and engages the connection aperture (210) when the assembly is subjected to tangential stresses.