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Key system for a vehicle

  • US 5,117,097 A
  • Filed: 02/20/1991
  • Issued: 05/26/1992
  • Est. Priority Date: 02/27/1990
  • Status: Expired due to Fees
First Claim
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1. A key system of an electromagnetic coupling type, comprising:

  • a key for storing key information, said key having an inserting member and a head to be operated;

    cylinder means for electromagnetically communicating with said key, said cylinder means including;

    a cylinder body having a key insertion hole into which said inserting member of said key is inserted;

    a rotor for receiving said key, said rotor being rotatable with said key;

    a magnetic core for forming a magnetic circuit with said key, said magnetic core surrounding said rotor, said magnetic core being rotatable with said rotor; and

    means for generating a magnetic field, said magnetic field generating means being substantially unmovable with respect to said rotor, said magnetic field generating means including;

    a bobbin movably fitted on said magnetic core;

    a wire would on said bobbin; and

    a cylindrical member for leading said wire along an axis of said cylinder body, said cylindrical member being unitarily formed with said bobbin.

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