Acceleration switch

• US 5,373,124 A
• Filed: 09/10/1993
• Issued: 12/13/1994
• Est. Priority Date: 11/19/1992
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Kaiser, Harry, Abendroth, Manfred
• Primary Examiner(s): SCOTT, JAMES R
• Application Number:
  US08/120,536
• Time in Patent Office: 459 Days
• Field of Search: 200/61.45 R, 200/61.53, 200/61.45 M, 335/205-207
• US Class Current: 200/61.45R
• CPC Class Codes: H01H 35/147 the switch being of the reed switch type

Abstract

An acceleration switch has a housing having a housing recess, an elongated tilting body located in the housing recess and operating as a seismic mass, a magnetic system, and a reed switch. The tilting body is arranged so that upon exceeding of a predetermined threshold value a control signal is released by interaction of the magnetic system and the reed switch. The magnetic system includes at least two permanent magnets having opposite polarization directions and connected with a magnetic flux conducting body at an end side facing away from the reed switch. The reed switch has contacts located in a magnetic field between the permanent magnets. The polarization directions of the permanent magnets extend perpendicular to a longitudinal axis of the tilting body. The contacts of the reed switch are arranged in a tilting direction of the tilting body.

Claims

1. An acceleration switch, comprising a housing having a housing recess;

a tilting body located in said housing recess tiltably in a tilting direction and operating as a seismic mass, said tilting body being elongated;

a magnetic system connected with one of said housing and said tilting body;

a reed switch connected with another of said housing and said tilting body, said tilting body being arranged so that upon its tilting over a predetermined threshold value a control signal is released by interaction of said magnetic system and said reed switch, said magnetic system including at least two permanent magnets having opposite polarization directions and connected with a magnetic flux conducting body at an end side facing away from said reed switch, said reed switch having contacts located in a magnetic field between said permanent magnets, said polarization directions of said permanent magnets extending perpendicular to a longitudinal axis of said tilting body, said contacts of said reed switch extending in the tilting direction of said tilting body.

2. An acceleration switch as defined in claim 1, wherein said permanent magnets and said reed switch are arranged in a plane extending perpendicular to the longitudinal axis of said tilting body.

3. An acceleration switch, comprising a housing having a housing recess;

a tilting body located in said housing recess tiltably in a tilting direction and operating as a seismic mass, said tilting body being elongated;

a magnetic system connected with one of said housing and said tilting body;

a reed switch connected with another of said housing and said tilting body, said tilting body being arranged so that upon its tilting over a predetermined threshold value a control signal is released by interaction of said magnetic system and said reed switch, said magnetic system including at least two permanent magnets having opposite polarization directions and connected with a magnetic flux conducting body at an end side facing away from said reed switch, said reed switch having contacts located in a magnetic field between said permanent magnets, said polarization directions of said permanent magnets extending perpendicular to a longitudinal axis of said tilting body, said contacts of said reed switch extending in the tilting direction of said tilting body, said tilting body having a projection, said magnetic system being arranged in said projection of said tilting body.