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OPENING AND CLOSING MOTION CONTROL DEVICE FOR CLOSING MEMBER

  • US 20020043948A1
  • Filed: 12/15/1999
  • Published: 04/18/2002
  • Est. Priority Date: 12/18/1998
  • Status: Active Grant
First Claim
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1. An opening and closing motion control device which is constructed so as to perform an opening and closing motion of a closing member by using a driving unit for driving the closing member, the opening and closing motion control device comprising:

  • a flexible seal member arranged along a contact portion of a ground potential member, the contact portion being touched by the closing member when the closing member is closed up perfectly;

    a liner electrostatic-capacity detecting unit embedded in the seal member, for always detecting an electrostatic capacity in the circumference of the electrostatic capacity detecting unit and also outputting the so-obtained electrostatic capacity;

    a pinching judging unit electrically connected to the electrostatic-capacity detecting unit, for judging whether or not an object is pinched by the closing motion of the closing member, on the basis of the detection of pinching by the electrostatic capacity detecting unit; and

    a drive control unit electrically connected to the pinching judging unit, allowing the driving unit to either stop the closing member or start the opening motion of the closing member when the pinching judging unit judges that the object is on the point of being pinched.

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