Device for measuring the tire pressure in a pneumatic tire of a vehicle

• US 20030015030A1
• Filed: 07/18/2002
• Published: 01/23/2003
• Est. Priority Date: 07/19/2001
• Status: Active Grant

• Current Assignee: Alligator Ventilfabrik GmbH (Familie Steiff mit CA. 50 Gesellschaftern)
• Original Assignee: Alligator Ventilfabrik GmbH (Familie Steiff mit CA. 50 Gesellschaftern)
• Inventors: Gabelmann, Volker
• Granted Patent: US 6,557,406 B2
• Time in Patent Office: Days
• US Class Current: 73/146
• 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
• CPC Class Codes: G01L 17/00 Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies

Abstract

In a device for measuring a tire pressure in a pneumatic tire of a vehicle by means of a measurement value sensor which is acted upon by the tire pressure and which is associated with a receiver, at the rim bed of a rim for the pneumatic tire, which rim accommodates the tire valve (20), connected to the tire valve (20) which has a retaining nut (32) is an electronics or signal housing (50) which is associated with the rim base and which has base bar portions (62) and which includes an electronic transmitter means as the measurement value sensor for the tire pressure and is connected to the tire valve (20) by a hollow screw (42) engaging into the valve bore (28) and can be adjusted with respect thereto. Disposed at the inside (33) of the retaining nut (32) is a projection (34) as a desired-rupture element, and the base bar portions (62) of the signal housing (50) are pressed against the rim base by the hollow screw (42). The projection (34) belongs to an installation portion at the inside surface (33) of the retaining nut (32) and is in the form of a leg (34) provided at that inside surface (33).

Claims

1. A device for measuring the tire pressure in a pneumatic tire of a vehicle by means of a measurement value sensor, which is acted upon by the tire pressure, at the rim base (12) of a rim (10) receiving a tire valve (20), for the pneumatic tire, outside which a receiver is associated with the measurement value sensor, wherein connected to the tire valve (20) which has a retaining nut (32) is an electronics or signal housing (50) which is associated with the rim base (12) and which has base bar portions (62) and which includes an electronic sender means as the measurement value sensor for the tire pressure and is connected to the tire valve (20) by a hollow screw (42) engaging into the valve bore (28) and is adjustable with respect thereto,

characterised in that

provided at the inside (33) of the retaining nut (32) is a projection (34) as a desired-rupture element and the base bar portions (62) of the signal housing (50) are pressed against the rim base (12) by the hollow screw (42).

2. A device as set forth in claim 1 characterised in that the projection (34) belongs to an installation part at the inside surface (33) of the retaining nut (32).

3. A device as set forth in claim 1 or claim 2 characterised in that the projection is formed by a flange (34) provided at the inside surface (33) of the retaining nut (32).

4. A device as set forth in claim 3 characterised in that the projection is a flange (34) which extends peripherally at the inside surface (33) of the retaining nut (32).

5. A device as set forth in one of claims 1 through 4 characterised by such a configuration of the projection or flange (34) that it can be sheared off when a predetermined torque is exceeded.

6. A device as set forth in claim 5 characterised by a torque of between 3 Nm and 6 Nm.

7. A device as set forth in one of claims 1 through 6 characterised in that the screw head (44) of the hollow screw (42) is at least partially of a polygonal periphery and can be connected in positively locking relationship in the regions (46) of the periphery to the signal housing (50).