Universal global latch system

  • US 10,316,553 B2
  • Filed: 01/20/2016
  • Issued: 06/11/2019
  • Est. Priority Date: 03/12/2009
  • Status: Active Grant
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First Claim
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1. A door latch system for vehicle doors, said door latch system comprising:

  • a controller;

    a latch assembly configured to maintain a vehicle door in a closed position when the latch assembly is latched, and the latch assembly configured to permit opening of the vehicle door when the latch assembly is unlatched, the latch assembly including a catch and a pawl, the catch having a closed position wherein the catch is configured to grasp a portion of a vehicle to maintain a vehicle door in a closed position and the catch is configured to have an open position wherein the catch is configured to release the portion of the vehicle to allow the vehicle door to move to an open position, the pawl being configured to maintain the catch in the closed position when the pawl is in a latched position, and permit movement of the catch from the closed position to the opened position when the pawl is in an unlatched position;

    an actuatable inside handle movable from a rest position to an actuated position;

    an inside release switch that is actuated when the inside handle is actuated, wherein the inside release switch is configured to send a signal to the controller when the inside release switch is actuated;

    a linkage assembly mechanically interconnecting the inside handle to the latch assembly such that a single pull of the inside handle from the rest position to the actuated position moves the pawl from the latched position to the unlatched position to permit manual mechanical unlatching of the latch assembly without actuation of a powered actuator and without additional user action if the vehicle does not have electrical power;

    an electrically powered actuator operably connected to the pawl and selectively shifting the pawl from the latched position to the unlatched position when the electrically powered actuator is actuated;

    and wherein, the controller is configured to actuate the electrically powered actuator to unlatch the latch assembly when the controller receives a signal from the inside release switch if the vehicle has power.

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