US 2017/0284450 A1 · PERMANENT SCREW ATTACHMENT

Abstract

A method and system for permanently attaching a take-up screw for taking-up the axial clearance of the armature shaft of a windscreen wiper motor are disclosed. The take-up screw is screwed axially into a bore in the motor base (SM) until the screw reaches a stop position in relation to the armature shaft locked in the screw. At least one surface discontinuity is provided in the bore and/or the thread of the screw, allowing the screw to be screwed into the bore until it reaches the stop position. The screw is screwed into the bore until the stop position is reached and a screw- and/or motor base-deformation strain is applied at the discontinuity in order to deform the side surface of the screw and/or motor base (SM) and permanently attach the screw and/or motor base by wedging in the discontinuity.

Claims15

Dependent claims

A method for permanently securing a screw for compensating for the axial play of the armature shaft of a windshield wiper motor, the compensating screw being screwed axially into a bore of the motor mounting base as far as an abutment position with respect to the armature shaft which is immobilized thereon, the method comprising:

creating, in the bore, at least one surface discontinuity allowing the screw to be screwed into the bore as far as the abutment position;
screwing the screw into the bore as far as the abutment position;
and
applying, at said discontinuity, a force for deforming the screw so as to deform the lateral surface of the screw and so as to permanently secure the screw by jamming in said discontinuity.

1 more element

Dependencies are inferred from the claim text.

Permanent screw attachment

Life of this patent

Permanent screw attachment

Life of this patent

Abstract

Claims15