Pivot link assembly

Patent metadata

Field	Value
Publication number	US-10731699-B2
Application number	US-201715429764-A
Country	US
Kind code	B2
Filing date	Feb 10, 2017
Priority date	Aug 13, 2014
Publication date	Aug 4, 2020
Grant date	Aug 4, 2020

Abstract

The invention relates to a pivot connection type assembly comprising a shaft and first and second connection parts, each receiving the shaft so as to enable them to pivot relative to each other, the first connection part being arranged axially between a first end of the shaft and a radial plane, while the second connection part is arranged axially between said radial plane and the other end of the shaft. The shaft is hollow and includes an inside section that presents a radial dimension at least in a first axial plane and over a first segment of the shaft extending axially between the first end and the radial plane, which radial dimension varies, decreasing on axially approaching the radial plane. The assembly includes a ring interposed radially between the shaft and a bore of the first connection part, and presenting radial thickness that varies.

First claim

We claim:

1. A pivot connection type assembly comprising a shaft and first and second connection parts that are dissociated from each other, each having a bore receiving the shaft so as to enable the first and second connection parts to pivot relative to each other, the first connection part being arranged axially between a first end of the shaft and a radial plane, while the second connection part is arranged axially between said radial plane and the other end of the shaft, the assembly being characterized in that the shaft is hollow and includes an inside section that presents a radial dimension at least in a first axial plane and over a first segment of the shaft extending axially between the first end and the radial plane, which radial dimension varies, decreasing on axially approaching the radial plane, and in that the assembly includes a ring interposed radially between the shaft and the bore of the first connection part, and presenting a radial thickness that varies and an elliptical cross-section,
wherein the radial thickness of the ring is greater in the first axial plane than in a second axial plane orthogonal to the first axial plane.

2. An assembly according to claim 1 , wherein the radial dimension that varies decreases linearly on axially approaching the radial plane.

3. An assembly according to claim 1 , wherein the inside section of the shaft presents a radial dimension that is constant in said at least one first axial plane and over a second segment of the shaft that is axially adjacent to the first segment.

4. An assembly according to claim 1 , wherein the inside section of the shaft is circular.

5. An assembly according to claim 1 , wherein the ring presents symmetry of revolution.

6. An assembly according to claim 1 , including a clevis incorporating the first connection part and a third connection part spaced apart axially from the first connection part, and a complementary part incorporating the second connection part and interposed axially between the first and third connection parts of the clevis.

7. An assembly according to claim 6 , wherein the first and third connection parts are symmetrical to each other about a plane of symmetry parallel to the radial plane, and wherein the inside section of the shaft is symmetrical relative to said plane of symmetry.

8. The assembly of claim 1 , wherein a major axis of the elliptical cross-section of the ring is in the first axial plane, and a minor axis of the elliptical cross-section of the ring is in the second axial plane.

9. A pivot connection type assembly comprising a shaft and first and second connection parts that are dissociated from each other, each having a bore receiving the shaft so as to enable the first and second connection parts to pivot relative to each other, the first connection part being arranged axially between a first end of the shaft and a radial plane, while the second connection part is arranged axially between said radial plane and the other end of the shaft, the assembly being characterized in that the shaft is hollow and includes an inside section that presents a radial dimension at least in a first axial plane and over a first segment of the shaft extending axially between the first end and the radial plane, which radial dimension varies, decreasing on axially approaching the radial plane, and in that the assembly includes a ring interposed radially between the shaft and the bore of the first connection part, and presenting an elliptical cross-section and a radial thickness that varies such that the radial thickness of the ring is greater in the first axial plane than in a second axial plane orthogonal to the first axial plane.

10. An assembly according to claim 9 , wherein the radial dimension that varies decreases linearly on axially approaching the radial plane.

11. An assembly according to claim 9 , wherein the ring has a closed cross-section.

12. An assembly according to claim 9 , wherein a major axis of the elliptical cross-section of the ring is in the first axial plane, and a minor axis of the elliptical cross-section of the ring is in the second axial plane.

Assignees

• Safran
• Safran Landing Systems

Inventors

• Renaud Mathieu
• Charrier Jean-Sébastien
• Grenêche Rémi
• Mounier Anne
• Pilato Aurélie Eléonore

Classifications

• F16C11/045 Primary

  with at least a pair of arms pivoting relatively to at least one other arm, all arms being mounted on one pin (crank-pins F16C11/02) · CPC title

• F16C2208/82

  Composites, i.e. fibre reinforced thermosetting resins · CPC title

• Y10T403/32926

  with interposed antifriction means · CPC title

• E02F9/006

  Pivot joint assemblies (in general F16C11/04) · CPC title

• F16C2326/43

  Aeroplanes; Helicopters · CPC title