Self-lubricating hinge assembly made from composite material and operating under high dynamic loads

Patent metadata

Field	Value
Publication number	US-9790984-B2
Application number	US-201314436617-A
Country	US
Kind code	B2
Filing date	Oct 15, 2013
Priority date	Oct 22, 2012
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

This assembly includes a ball joint assembled in a casing, and receiving an axle capable of sliding and/or rotating therein. The ball joint is formed from the winding of a fabric of small thickness ranging between 20 μm and 150 μm and mixed with a resin comprising fillers. The fabric has the form of strips having a width ranging between 5 mm and 200 mm; the strips being crossed in several layers.

First claim

The invention claimed is:

1. A self-lubricating joint assembly operating under high loads in dynamic state and comprising a ball joint assembled in a casing, said ball joint receiving an axle capable of sliding and/or rotating in the ball joint, wherein the ball joint includes a core comprising a winding of a fabric of thickness ranging between 20 μm and 150 μm mixed with a resin comprising fillers, said fabric having the form of strips having a width ranging between 5 mm and 200 mm, said strips being crossed at a crossing angle ranging between 10° and 90° in several layers by filament winding, and wherein both an inner periphery and an outer periphery of the core are coated with a self-lubricating material.

2. The assembly of claim 1 , wherein the fabric thickness ranges between 20 μm and 130 μm.

3. The assembly of claim 1 , wherein a crossing angle of the crossing strips ranges between 30° and 86°.

4. The assembly of claim 1 , wherein the fabric comprises synthetic fabric.

5. The assembly of claim 1 , wherein the resin comprises epoxy, ester vinyl, polyester, phenolic, or polyimide.

6. The assembly of claim 1 , wherein the fillers comprise PTFE, MoS2, or graphite.

7. The assembly of claim 6 , wherein the fillers amount to between 5 and 70% of the volume.

Assignees

• Hydromecanique & Frottement

Inventors

• Masse Emmanuel
• Blandenet Olivier
• Maurin-Perrier Philippe

Classifications

• F16C2240/30

  Angles, e.g. inclinations · CPC title

• F16C33/203

  Multilayer structures, e.g. sleeves comprising a plastic lining · CPC title

• F16C2208/70

  Polyesters, e.g. polyethylene-terephthlate [PET], polybutylene-terephthlate [PBT] · CPC title

• F16C2208/86

  Epoxy resins · CPC title

• F16C23/045 Primary

  for radial load mainly, e.g. radial spherical plain bearings · CPC title