Mechanical part with pre-integrated through-fastening element

Patent metadata

Field	Value
Publication number	US-12311432-B2
Application number	US-202118246236-A
Country	US
Kind code	B2
Filing date	Sep 22, 2021
Priority date	Sep 24, 2020
Publication date	May 27, 2025
Grant date	May 27, 2025

Abstract

A mechanical part includes a part body provided with a through-opening, and a through-fastening element including a rod engaged in the through-opening and connected to an inner surface of the through-opening by a support fastened to the rod of the through-fastening element and to the inner surface of the through-opening and configured to break the link between the rod of the through-fastening element and the inner surface of the through-opening, under the effect of a thrust applied on the through-fastening element so as to push the rod of the latter into the through-opening. Due to the fact that the through-fastening element is pre-integrated with the mechanical part, the logistical management prior to assembly of the mechanical part to another mechanical part is simplified, the risk of operator errors and loss of the fastening element are reduced.

First claim

What is claimed is:

1. A mechanical part, comprising:
a part body provided with a through-opening; and
a through-fastening element including a rod engaged in the through-opening and connected to an inner surface of the through-opening by a support,
wherein the part body, the support, and the through-fastening element are formed as a single piece, and
wherein the support is configured to break under the effect of a thrust applied on the through-fastening element so as to push the rod of the latter into the through-opening.

2. The mechanical part according to claim 1 , wherein the through-fastening element is a rivet or a threaded rod.

3. The mechanical part according to claim 1 , wherein the support is connected to a side surface of the rod of the through-fastening element.

4. A propulsion assembly for an aircraft, including a mechanical part according to claim 1 .

5. An aircraft, including a mechanical part according to claim 1 .

6. A method for manufacturing a mechanical part according to claim 1 , comprising the manufacture of the part body, the through-fastening element, and the support, as a single piece by an additive manufacturing technique.

7. A method for assembling a mechanical part according to claim 1 to another mechanical part, wherein the other mechanical part comprises another part body provided with another through-opening, the method comprising the following steps:
A) positioning the mechanical part and the other mechanical part so as to align the through-opening of the mechanical part with the other through-opening of the other mechanical part; then
B) applying a thrust on the through-fastening element so as to break the support and to push the rod of the through-fastening element into the through-opening and into the other through-opening; then
C) fastening the mechanical part to the other mechanical part by means of the through-fastening element.

8. The method according to claim 7 , wherein the through-fastening element is a rivet or threaded rod, and wherein the thrust of step B is applied on a head of the through-fastening element.

9. The method according to claim 8 , wherein the through-fastening element is a rivet, and wherein step C is a riveting operation.

10. The method according to claim 8 , wherein the through-fastening element is a threaded rod, and wherein step C comprises tightening a nut on one end of the through-fastening element opposite to the head of the latter.

Assignees

• Safran Aircraft Engines

Inventors

• Rousseau Claire Hélène
• Goossens Eric Joseph
• Vial Matthieu

Classifications

• F16B2200/63

  Frangible connections · CPC title

• F16B2200/506

  bolted or riveted · CPC title

• B21J15/32

  Devices for inserting or holding rivets in position with or without feeding arrangements · CPC title

• B21J15/02

  Riveting procedures · CPC title

• B21J15/145

  Turbines · CPC title