Coupling with securing pin

Patent metadata

Field	Value
Publication number	US-10161433-B2
Application number	US-201515507919-A
Country	US
Kind code	B2
Filing date	Sep 1, 2015
Priority date	Sep 1, 2014
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

A coupling comprising a driven part and a driving part that is connected by a safety pin so as to drive the driven part together with the driving part in a travel direction, one of the parts having a male portion engaged in a female portion of the other part, the male and female portions respectively having a first guide surface and a second guide surface facing each other in such a manner that, in the event of the pin breaking, the driving part is capable of moving relative to the driven part in the travel direction, the pin extending perpendicularly to said direction through corresponding holes made in the male and female portions, the coupling being characterized in that the hole made in the male portion opens out in the bottom of a setback in the second guide surface.

First claim

The invention claimed is:

1. A coupling comprising a driven part and a driving part that is connected by a safety pin so as to drive the driven part together with the driving part in a travel direction, one of the parts having a male portion engaged in a female portion of the other part, the male and female portions respectively having a first guide surface and a second guide surface facing each other in such a manner that, in the event of the pin breaking, the driving part is capable of moving relative to the driven part in the travel direction, the pin extending perpendicularly to said direction through corresponding holes made in the male and female portions, the coupling being characterized in that the hole made in the male portion opens out in the bottom of a setback in the second guide surface, and the setback has a depth that is such that the pin works essentially in shear and that is greater than a theoretical height of a bead formed in the zone where the pin bears against the bottom of the setback when the pin breaks, the second guide surface for guiding the male portion being cylindrical and the setback being an annular groove.

2. The coupling according to claim 1 , wherein the driving part is arranged to turn about an axis of rotation and the groove has an axis of revolution that coincides with the axis of rotation of the driving part.

3. The coupling according to claim 2 , wherein the setback has a depth lying in the range about 0.1 mm to 0.3 mm.

4. The coupling according to claim 1 , wherein the setback has a depth lying in the range about 0.1 mm to 0.3 mm.

5. The coupling according to claim 1 , wherein the parts and the pin are made of the same material.

Assignees

• Safran Electronics & Defense

Inventors

• Gomolko Oleg

Classifications

• F16B21/12 Primary

  with locking-pins or split-pins thrust into holes · CPC title

• F16B2021/14

  Mechanical Engineering · mapped topic

• B60D1/025

  comprising release or locking lever pins · CPC title

• F16B21/16

  with grooves or notches in the pin or shaft · CPC title

• F16B39/08

  with a cap interacting with the nut, connected to the bolt by a pin or cotter pin · CPC title