Multimatic Inc.

Balathas Nagamany

Rudolf Gruber

Andrew R Daniels

Victor Gusev

Kelsey Dale Krushel

Andrew Peter Marangoni

A power drive module for a vehicle power door includes a housing, a drive mechanism arranged in the housing and configured to move a drive element, and a brake assembly arranged in the housing. The brake assembly includes a brake ring operatively coupled to the drive mechanism. A brake band is wrapped about the brake ring and movable between a normally engaged position relative to the brake ring and a disengaged position relative to the brake ring. A brake release actuator is operatively connected to the brake band and configured to move the brake band between the engaged and disengaged positions with the brake ring in response to an electrical signal.

Power drive module for vehicle doors

A door power drive module includes a housing and a motor arranged in the housing. First and second gearboxes are arranged in the housing and are coupled in series with one another by a shaft member. The first gearbox connects the motor to the second gearbox. An output shaft is coupled to the second gearbox. A brake assembly is selectively connected to the shaft member. The brake assembly has a normally closed position in which the shaft member is grounded to the housing. The brake assembly includes an open position corresponding to one of a door closing mode and a door opening mode. The shaft member is configured to be rotatable relative to the housing in the brake open position in response to the motor driving the first gearbox. The brake assembly includes a holding torque in the normally closed position. A torque is applied to the brake assembly above the holding torque that permits the shaft member to rotate in any direction of rotation. A position sensor is configured to detect rotation of the output shaft.

Vehicle door system with power drive module

A method of actuating a door includes the steps of manually pivoting a door in a direction about a hinge to provide a manual input, detecting the manual input and energizing a motor to drive the door in the direction in response to the manual input. The manual door pivoting step includes exceeding a holding torque of a brake assembly that holds the door. The direction can be any direction for opening or closing the door.

An automotive door system includes a hinge that supports a door. A switch provides a first input in response to a user request to automatically open or close the door. An output shaft of a power drive module is connected to the door and a gearbox to provide an output torque that corresponds to a desired motion of the door about the hinge. A brake assembly is connected to a shaft member and has a normally closed position in which the shaft member is grounded to the housing and an open position that corresponds to one of a door closing mode and a door opening mode. A position sensor detects rotation of the output shaft and provides a second input in response thereto, which corresponds to a manually initiated movement of the door that exceeds a slip torque of the brake assembly in the normally closed position.

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Markham, Canada

Balathas Nagamany