US 5,509,175 AGranted

Vehicle door hinge with compound roller structure having one piece spool, synthetic bearing sleeve and pliable annular ring

AssigneeITT Corporation

InventorsSteven M. Baughan, Eric T. Hartman

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Abstract

An automotive door hinge assembly is provided with a hold-open device with a leaf spring member carried on a first part of a hinge assembly, and a compound roller carried on a second part of the hinge assembly, wherein the compound roller engages the leaf spring member with the combination of a flexible and resilient first material portion and a hard, rigid second material portion of the roller assembly during its motion between the door open and door closed positions. Preferably, the hard, rigid second material portion of the roller assembly is made of a single piece spool having a first, reduced diameter, annular shoulder interposed between two, longitudinally spaced, enlarged diameter, annular shoulders. To reduce noise, a synthetic bushing is preferably disposed between the spool and a roller pin of the hinge mechanism and the first annular shoulder has a roughened surface engageable with the first material portion.

Claims18

Dependent claims

In a hinge assembly for a vehicle having a body and a door including a first plate adapted to be secured to the body of the vehicle, a second plate adapted to be secured to the door of the vehicle, pin means for pivotally connecting the first plate to the second plate about a first axis, third plate means secured to one of said first and second plates at one end and having a free end positioned intermediate between said one of said first and second plates and the other of said first and second plates proximate the pin means, spring means positioned between said third plate means and said one of said first and second plates for biasing said third plate means outwardly from said one of said first and second plates and a roller member mounted on a pin for rotation about a second axis and movable with said other of said first and second plates between a door-closed position and a door-opened position, wherein said roller member is spaced from said third plate means when in said door-closed position, said roller member engageable with said third plate means when moving between said door-opened position and said door-closed position causing deflection of said third plate means against said spring means, the improvement comprising:

said roller member having a hard, rigid spool portion and a flexible, resilient silencer portion, said silencer portion adapted to engage said spool portion such that the spool portion and the silencer portion engage said third plate means when moving between said door-opened and door-closed positions, said spool portion of said roller member formed of a single piece having a first, reduced diameter, annular shoulder interposed between two, longitudinally spaced, enlarged diameter, annular shoulders, said first annular shoulder of said spool having a knurled surface engageable with said silencer portion.

In a hinge assembly of the type having a body plate adapted to be secured to the body of a vehicle, a door plate pivotally connected about a vertical hinge axis to the body plate and adapted to be secured to a door of the vehicle, and a check spring mounted on one of the plates operably engageable with a striker member carried by the other of the plates to hold the door plate in a door-opened position, the improvement comprising:

said striker member including a roller member mounted on a pin for rotation about a second axis and movable with said other of said plates between a door-closed position and a door-opened position, wherein said roller member is spaced from said one of said plates when in said door-closed position, said roller member engageable with said one of said plates when moving between said door-opened position and said door-closed position causing deflection of said check spring, said roller member having a hard, rigid, one-piece spool portion and a flexible, resilient silencer portion, said silencer portion adapted to engage said spool portion such that the spool portion and the silencer portion engage said one of said plates when moving between said door-opened and door-closed positions, said roller member having a knurled surface engageable with said silencer portion, said hard rigid spool portion of said roller member formed of a single piece having a first, reduced diameter, annular shoulder interposed between two, longitudinally spaced, enlarged diameter, annular shoulders, wherein the first annular shoulder has a diameter less than the diameters of the second annular shoulders and said first annular shoulder includes said roughened knurled surface.

Dependencies are inferred from the claim text.