US 11,952,806 B2Granted

Motor vehicle latch, in particular a motor vehicle door latch

AssigneeKiekert AG

InventorsRob Hunt, Scott Brown

Life of this patent

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Abstract

A motor vehicle latch, in particular a motor vehicle door latch, is equipped with a locking mechanism consisting substantially of a catch and a pawl. An electromotive drive for a coupling lever is further provided as part of a power locking unit. In addition, a first operating lever is provided, wherein in the “unlocked” position of the power locking unit, said first operating lever works on the coupling lever that is then engaged in order to open the locking mechanism, and wherein in the “locked” position of the power locking unit, said first operating lever performs an idle stroke relative to the coupling lever that is then disengaged. According to the invention, the electromotive drive works with a linear thrust member on the coupling lever, wherein the linear thrust member is held in at least one position with the aid of a blocking levers).

Claims19

Dependent claims

A motor vehicle latch comprising:

a locking mechanism including a catch and a pawl,
a power locking unit comprising an electromotive drive and a linear thrust member that is driven by the electromotive drive, and a coupling lever operatively coupled to the linear thrust member,
a first operating lever, and
a blocking lever,
wherein in an unlocked position of the power locking unit, said first operating lever acts on the coupling lever that is then engaged to open the locking mechanism, and wherein in a locked position of the power locking unit, said first operating lever performs an idle stroke relative to the coupling lever that is then disengaged,
wherein the electromotive drive acts on the linear thrust member to engage with the coupling lever to move the linear thrust member and the engaged coupling member between a basic position when the power locking unit is in the unlocked position where the coupling lever is actable on by the first operating lever, and an extended position when the power locking unit is in the locked position where the coupling lever is not actable on by the first operating lever, wherein the linear thrust member is held in at least one of the basic position or the extended position with the aid of the blocking lever,
wherein the blocking lever is equipped with a spring which biases the blocking lever in a direction of the linear thrust member,
wherein, in the unlocked position, the blocking member engages a first side of the linear thrust member to bias the linear thrust member and the coupling member toward the basic position, and
wherein, in the locked position, the blocking member engages a second side of the linear thrust member to not bias the linear thrust member and the coupling member toward the basic position, wherein the first side and the second side are different.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/715,181Filed 7 Apr 2022
Published: US 2023/0323709 A112 Oct 2023
Granted: 9 Apr 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

E05B 81/16
Characterised by the function or purpose of the powered actuators: operating on locking elements for locking or unlocking action
E05B 81/28
Output elements: linearly reciprocating elements
E05B 15/0053
Other details of locks; Parts for engagement by bolts of fastening devices: means providing a stable, i.e. indexed, position of lock parts
E05B 77/26
Preventing use of an inner door handle, sill button, lock knob or the like: specially adapted for child safety