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

• US 20060075812A1
• Filed: 10/11/2005
• Published: 04/13/2006
• Est. Priority Date: 10/12/2004
• Status: Active Grant

• Current Assignee: LDL Technology SAS
• Original Assignee: LDL Technology SAS
• Inventors: Luce, Dominique
• Granted Patent: US 7,257,998 B2
• Time in Patent Office: Days
• US Class Current: 73/146.800
• 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

The invention relates to an assembly (M) of a detection unit (100) inside a tyre which is attached to the body (300) of a valve (V) and including the following elements:

a detection unit (100) receiving detection components,

a valve body (300),

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

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

a module for connecting the detection unit (100) to the valve body (300). This assembly is remarkable in that at least one of the elements (500) of said assembly, aside from the sealing means (400), is preformed so that a portion of this element (500) penetrates the connection aperture (210) so as to engage it when the assembly 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, and including the following elements:

a detection unit (100) receiving detection components,

a valve body (300),

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

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

a module for connecting the detection unit (100) to the valve body (300), wherein at least one of the elements (500) of said assembly, aside from the sealing means (400), is preformed so that a portion of this element (500) penetrates the connection aperture (210) so as to engage it when the assembly 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 valve (V) position holding means (500) being placed inside and coming into contact with the 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 sealing means (400) come into contact with the external surface of the rim (200).

4. The assembly according to claim 2, wherein said position holding means (500) consist of 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 (500), the seal (400) securely between the aperture (210) and the valve body (300).

5. The assembly (M) according to claim 2, wherein said shoulder (310) is preformed so as to create an surface (311) for axial contact with the surface of the rim (200) and opposing the 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 unit (100) to the valve body (300) includes a sleeve (500) 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 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 aperture (210).

7. The assembly (M) according to claim 6, wherein said sleeve (500) includes a head (540) with a shoulder (541) which acts as a contact surface for said unit (100).

8. The assembly (M) according to claim 6, wherein said sleeve (500) is threaded so as to be screwed on the valve body (300).

9. The assembly (M) according to claim 7, wherein it includes resilient means (600) that tend to hold the unit (100) in contact with the head (540).

10. The assembly (M) according to claim 5, wherein said head (540) is preformed at the level of its surface (541) in contact with the unit (100) to provide a corrugated portion cooperating with notches provided in the unit (100) so as to limit the rotational movements of the unit (100) with respect to said sleeve (500).

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

12. The assembly (M) according to claim 6, wherein the end of the element (500) penetrating the aperture (210) provided in the rim (200) is chamfered (530) at the level of its internal aperture.

13. The assembly (M) according to claim 6, wherein the surfaces of the sleeve (500) and the unit (100) coming into contact are preformed so as to form a curved contact surface to enable the unit (100) to come into contact with the internal surface of the rim (200).