Title:
【発明の名称】自動車用タイヤ圧力センサ
Document Type and Number:
Japanese Patent JPS63501864
Kind Code:
A
Abstract:
PCT No. PCT/DE86/00446 Sec. 371 Date Jul. 23, 1987 Sec. 102(e) Date Jul. 23, 1987 PCT Filed Nov. 5, 1986 PCT Pub. No. WO87/03547 PCT Pub. Date Jun. 18, 1987.A tire pressure sensor for motor vehicles comprises a pressure switch which is actuated by the tire pressure for monitoring the tire pressure. The pressure switch has a reference pressure chamber which is closed in the direction of the tire by means of an electrically conducting diaphragm and carries a contact pin which is contacted by the middle area of the diaphragm in order to close an electric circuit when there is sufficient air pressure in the tire. In order to trigger an alarm signal during a leak in the reference pressure chamber a leakage check of the reference pressure chamber is realized in that an air gap is located between the contact pin and the middle area of the diaphragm when there is equal pressure on both sides of the diaphragm.
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Inventors:
Hearth,rothal
Het Teitzhi, Gerhard
Chamete, Hans-Deater
Het Teitzhi, Gerhard
Chamete, Hans-Deater
Application Number:
JP50585586A
Publication Date:
July 28, 1988
Filing Date:
November 05, 1986
Export Citation:
Assignee:
Roberto Botushiyu Gezershyaft Mitt Beshiyu Renktel Haftung
International Classes:
B60C23/00; B60C23/04; H01H35/26; (IPC1-7): B60C23/00
Domestic Patent References:
| JPS61205833A | 1986-09-12 |
Attorney, Agent or Firm:
Toshio Yano