Patent ID: 11877904
Assignee: KONINKLIJKE PHILIPS N.V.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC A  H | IPC A

Claim 8:
9. A method of manufacturing a drivetrain assembly for a personal care device, the method comprising:
resiliently mounting a shaft in a frame of the drivetrain assembly such that the shaft extends through an opening in an exterior surface at a distal end of the frame;
placing an abutment in movable engagement with the shaft at a first position on the shaft which is exterior to the frame such that an engagement surface of the abutment is in engagement with the exterior surface of the frame;
applying a predetermined force to the shaft in an axial direction along a longitudinal axis of the shaft such that the shaft moves relative to the frame in the given direction and the abutment moves to a second position on the shaft due to engagement of the engagement surface of the abutment and the exterior surface of the frame;
releasing the predetermined force applied to the shaft such that the shaft moves relative to the frame in a direction opposite to the given direction and the abutment moves with the shaft such that the abutment remains at the second position on the shaft and the engagement surface of the abutment is no longer in engagement with the exterior surface of the frame;
fixing the abutment to the shaft at the second position so that an airgap is provided between the engagement surface of the abutment and the exterior surface of the frame, and the airgap corresponds to a threshold distance allowing the shaft to move in the axial direction by the threshold distance to close the airgap;
wherein the abutment is a collar including a main body with an inner diameter corresponding to the diameter of the shaft and an outer diameter corresponding to the width of the opening of the exterior surface of the frame, and an engagement portion configured to project from the main body and to provide the engagement surface of the abutment; and
wherein the opening of the exterior surface of the frame is configured to receive the main body of the collar.