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Hinge apparatus for cover of image forming apparatus

  • US 7,406,747 B2
  • Filed: 01/16/2004
  • Issued: 08/05/2008
  • Est. Priority Date: 04/30/2003
  • Status: Expired due to Term
First Claim
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1. A hinge apparatus to open and close a cover of an image forming apparatus, which pivotably connects the cover to a main body of the image forming apparatus, to expose and cover a document glass, the hinge apparatus comprising:

  • a hinge body movably inserted in a first direction into a coupling hole positioned in the main body of the image forming apparatus, and having supporting brackets;

    a hinge cam, connected to the cover, and pivotably connected to the supporting brackets; and

    a pressure device disposed at the hinge body to press the hinge cam;

    the hinge body is provided with a housing chamber; and

    the pressure device comprisesa pusher disposed in the housing chamber, that protrudes from the housing chamber, anda spring disposed within the housing chamber to press the pusher;

    the pusher comprises a locking protrusion;

    the hinge body is provided with a guide slot; and

    the locking protrusion is inserted into the guide slot, and prevents the release of the pusher from the hinge body;

    wherein the pusher moves upward and downward within the guide slot.

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