Synchronized roller with free wheels

Patent metadata

Field	Value
Publication number	US-10330153-B2
Application number	US-201815860147-A
Country	US
Kind code	B2
Filing date	Jan 2, 2018
Priority date	Jan 3, 2017
Publication date	Jun 25, 2019
Grant date	Jun 25, 2019

Abstract

The synchronized roller with freewheels includes a central body which exposes an outer cylindrical rolling surface provided to roll between two rolling tracks lined with a synchronizing unit, each end of the body presenting a smooth axis about which a synchronizing pinion is freely rotatable, the axis having a pinion axial stop unit which prevents the pinion from emerging from the pinion, while a roller axial guide bears on the central body and on the rolling tracks to keep the outer cylindrical rolling surface approximately centered on the tracks.

First claim

The invention claimed is:

1. A synchronized roller with freewheels comprising a central body which exposes an outer cylindrical rolling surface provided interposed between two rolling tracks on which it rolls simultaneously when said tracks move relative to each other, each said track being integrally lined with synchronization means which form a gear system with a synchronizing pinion located at each end of the central body, the synchronized roller comprising:
a smooth axis of smaller diameter than that of the cylindrical rolling surface, arranged at each end of the central body, and around which the synchronizing pinion can rotate freely;
pinion axial stop means integral with the smooth axis which bear directly or indirectly on said axis and bear directly or indirectly on the synchronizing pinion to prevent said pinion from emerging from said axis;
roller axial guide means which bear directly or indirectly on the central body and directly or indirectly on at least one of the rolling tracks with which the cylindrical rolling surface cooperates in order to keep the latter approximately centered on said tracks.

2. The synchronized roller with freewheels according to claim 1 , wherein the pinion axial stop means consist of an axial stop spring ring housed in a spring ring groove arranged on the smooth axis.

3. The synchronized roller with freewheels according to claim 1 , wherein the roller axial guide means consist of a rigid axial guide washer which is axially and directly or indirectly interposed between the synchronizing pinion and an axial bearing surface exposed by the central body between the smooth axis and the outer cylindrical rolling surface, said rigid washer being able to bear on an axial guide track axially exposed at least by one of the rolling tracks.

4. The synchronized roller with freewheels according to claim 3 , wherein a spring axial guide washer is interposed between the rigid axial guide washer and the synchronizing pinion, said spring washer tending to press the rigid axial guide washer against the axial bearing face with which it cooperates and also to press the synchronizing pinion against the pinion axial stop means with which it cooperates.

5. The synchronized roller with freewheels according to claim 3 , wherein a spring axial guide washer is interposed between the synchronizing pinion and the pinion axial stop means, said spring washer tending to press the synchronizing pinion against the rigid axial guide washer so that the latter is in turn pressed against the axial bearing face with which it cooperates.

6. The synchronized roller with freewheels according to claim 5 , wherein the spring axial guide washer comprises at its center centering claws snapped into a claw groove arranged on the smooth axis, said groove constituting the pinion axial stop means.

7. The synchronized roller with freewheels according to claim 1 , wherein spring radial centering means are interposed radially between the smooth axis and the synchronizing pinion, said spring radial centering means tending to always recenter said pinion on said axis.

8. The synchronized roller with freewheels according to claim 7 , wherein the spring radial centering means consist of at least three spring radial centering tabs which emerge radially from the inner surface of a central recess included in the synchronizing pinion and which can touch the smooth axis.

9. The synchronized roller with freewheels according to claim 7 , wherein the spring radial centering means consist of at least one tab washer which has at its center a rotating sleeve which can rotate around the smooth axis, and whose outer cylindrical face is bristling with at least three spring radial centering tabs that can press on the inner surface of a central recess included in the synchronizing pinion.

10. The synchronized roller with freewheels according to claim 7 , wherein the spring radial centering means consist of at least three deformable rings which are placed in a ring housing arranged on the inner surface of a central recess included in the synchronizing pinion and which also can touch the smooth axis.

11. The synchronized roller with freewheels according to claim 7 , wherein the spring radial centering means consist of at least one spring washer with radial corrugations housed between the inner cylindrical face of a central recess included in the synchronizing pinion and the smooth axis.

12. The synchronized roller with freewheels according to claim 7 , wherein the spring radial centering means consist of at least one compressible ring made of flexible material, said ring being interposed radially between the inner surface of a central recess included in the synchronizing pinion and a flexible ring support disk that can rotate around the smooth axis.

13. The synchronized roller with freewheels according to claim 1 , wherein the synchronizing pinion comprises spring radial centering means which tend to always recenter said pinion on the smooth axis and which consist of at least one spring radial centering tab whose first end is integral with a pinion rim located at the periphery of the synchronizing pinion and whose second end is integral with a pinion hub located at the center of the synchronizing pinion, said hub being articulated around the smooth axis.

14. The synchronized roller with freewheels according to claim 1 , wherein the synchronizing pinion has spring radial centering means which tend to always recenter said pinion on the smooth axis and which consist of a thin web forming at least one web cone, the first end of said web being integral with a pinion rim located at the periphery of the synchronizing pinion while the second end is integral with a pinion hub located at the center of the synchronizing pinion, said hub being articulated around the smooth axis.

15. The synchronized roller with freewheels according to claim 1 , wherein at least one of the ends of the central body comprises an anti-edge effect recess located between the smooth axis and the outer cylindrical rolling surface.

Assignees

• Rabhi Vianney

Inventors

• Rabhi Vianney

Classifications

• F04B1/00 Primary

  Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (machines or pumps with pistons coacting within one cylinder F04B3/00) · CPC title

• F16C33/306 Primary

  Means to synchronise movements · CPC title

• F16C33/36

  with bearing-surfaces other than cylindrical, e.g. tapered; with grooves in the bearing surfaces · CPC title

• F16C33/585

  of raceways, e.g. ribs to guide the rollers · CPC title

• F16C33/491

  applied as pairs for retaining both ends of the rollers or needles · CPC title