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Power-actuated motor-vehicle door latch with child-safety cutout

  • US 5,494,322 A
  • Filed: 01/18/1994
  • Issued: 02/27/1996
  • Est. Priority Date: 01/15/1993
  • Status: Expired due to Fees
First Claim
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1. A motor-vehicle door latch comprising:

  • a housing;

    a lock fork on the housing engageable with a door bolt and pivotable between a locked position engaged around the bolt and retaining it on the housing and an unlocked position permitting the door bolt to move into and out of the housing;

    a release pawl engageable with the fork and displaceable between a holding position retaining the fork in the locked position and a freeing position unengageable with the fork and permitting the fork to move into the unlocked position;

    means including a lever mechanism connected to the release pawl and movable between an actuated position displacing the release pawl into the freeing position and an unactuated position with the release pawl in the holding position;

    means including a locking element pivoted on the housing about an element axis, operatively connected to the lever mechanism, formed with an outwardly open notch of predetermined angular width, and displaceable between locked and unlocked positions for decoupling the lever mechanism from the release pawl in the locked position of the locking element and for coupling the lever mechanism to the release pawl in the unlocked position of the locking element;

    a cutout lever pivotable on the housing about a cutout axis between a cutout position and a normal position;

    a drive body rotatable about a drive axis parallel to the element and cutout axes and having an eccentric pin extending parallel to the axes and of a diameter equal to at most half of the width of the notch, the pin being engaged in the notch and being engageable with the cutout lever;

    an inside handle operable from inside the vehicle;

    an inside latching lever permanently connected to the inside handle for actuation thereby, operatively connected to the cutout lever, and having an end engageable with the mechanism to actuate same only in the normal position of the cutout lever and operatively unengageable with the mechanism in the cutout position of the cutout lever; and

    means including a motor for rotating the drive body and thereby orbiting the pin about the drive axis fordisplacing the cutout lever between the cutout and normal positions, anddisplacing the locking element between the locked and unlocked positions.

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