Coupling element having vibration damping

Patent metadata

Field	Value
Publication number	US-11215235-B2
Application number	US-201816491436-A
Country	US
Kind code	B2
Filing date	Feb 9, 2018
Priority date	Mar 7, 2017
Publication date	Jan 4, 2022
Grant date	Jan 4, 2022

Abstract

A coupling for connection of an encoder to an electrical machine includes an encoder shaft end piece for coupling to a shaft of the encoder, and a machine shaft end piece for coupling to a shaft of the electrical machine. At least one of the end pieces has a carrier which is formed with a cavity filled with granular material, preferably steel powder, to effect a dampening of vibrations and impacts.

First claim

The invention claimed is:

1. A coupling for connecting an encoder to an electrical machine, said coupling comprising:
an encoder shaft end piece configured for coupling to a shaft of the encoder;
a machine shaft end piece configured for coupling to a shaft of the electric machine; wherein at least one member selected from the group consisting of the encoder shaft end piece and the machine shaft end piece includes a carrier formed in one piece with the member, said carrier extending from the member and having a fully enclosed cavity;
a granular material filled in the cavity; and
a torque transmission element mounted between the encoder shaft end piece and the machine shaft end piece, wherein the carrier is coupled to a slot of the torque transmission element.

2. The coupling of claim 1 , wherein the torque transmission element is made of plastic.

3. The coupling of claim 1 , constructed for damping vibrations or impacts.

4. The coupling of claim 1 , constructed for damping excess vibration stress at a resonance frequency caused by an oscillating system comprised of the coupling and a mass inertia of the encoder connected to the coupling.

5. The coupling of claim 1 , wherein the shaft end piece has exactly two carriers.

6. The coupling of claim 1 , wherein the carrier has exactly one cavity filled with the granular material.

7. The coupling of claim 1 , wherein the end pieces are formed from steel.

8. The coupling of claim 1 , wherein the granular material completely fills the cavity.

9. The coupling of claim 1 , wherein the granular material is steel powder.

Assignees

• Siemens Ag

Inventors

• Vollmer Rolf
• Braun Matthias

Classifications

• F16D3/12 Primary

  specially adapted for accumulation of energy to absorb shocks or vibration (by making use of fluid elements F16D3/80) · CPC title

• F16D3/04 Primary

  specially adapted to allow radial displacement, e.g. Oldham couplings · CPC title

• B22F10/28

  Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM] · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title

• F16D2250/00

  Manufacturing; Assembly · CPC title