Drive system

Patent metadata

Field	Value
Publication number	US-12287003-B2
Application number	US-202017769520-A
Country	US
Kind code	B2
Filing date	Oct 19, 2020
Priority date	Oct 18, 2019
Publication date	Apr 29, 2025
Grant date	Apr 29, 2025

Abstract

A drive system as disclosed includes an input shaft, an output shaft, and at least two coupling elements respectively coupled to the input shaft and the output shaft. In order to absorb assembly and manufacturing tolerances with respect to the shafts, the coupling elements and their attachment to the shafts and thereby prevent jamming of the drive system, at least one coupling element has an elastically deformable section, the elastically deformable section having a different material or a different cross-section than an adjacent section of the coupling element.

First claim

The invention claimed is:

1. Drive system comprising:
an input shaft;
an output shaft arranged in parallel to the input shaft;
at least two coupling elements coupled to the input shaft and the output shaft, respectively, and extending in a direction perpendicular to the input shaft and the output shaft,
wherein:
at least one coupling element of the at least two coupling elements has an elastically deformable section,
the elastically deformable section having a different material than an adjacent section of the coupling element, wherein the elastically deformable section is integrated into the coupling element by material bond, or
the elastically deformable section having a different cross section than an adjacent section of the coupling element, wherein an entirety of the coupling element is formed as one piece.

2. Drive system according to claim 1 , wherein the elastically deformable section is arranged exactly or substantially centrally between the input shaft and the output shaft.

3. Drive system according to claim 1 , wherein the elastically deformable section has an elastic element, formed as a spring or an elastomer.

4. Drive system according to claim 1 , wherein each of the input shaft and the output shaft comprises:
one or more eccentric sections, and each coupling element is coupled to a corresponding eccentric section.

5. Drive system according to claim 1 , wherein each coupling element is coupled to an end face of the input shaft and/or an end face of the output shaft.

6. Drive system according to claim 1 , wherein the coupling elements are arranged on the input shaft and the output shaft so as to be out of phase with one another.

7. Drive system according to claim 1 , wherein the input shaft and the output shaft are mounted in a common housing which is elastically deformable.

8. Drive system according to claim 1 , wherein the output shaft has a longitudinal slot extending along an axis of output shaft rotation.

9. Drive system according to claim 1 , wherein the at least one coupling element is U-shaped.

10. Drive system according to claim 8 , wherein the output shaft is adjustable by a rotation angle of +/−135° about the axis of output shaft rotation.

11. Drive system according to claim 1 , wherein the coupling elements are arranged on the input shaft and the output shaft so as to be out of phase with one another by 60° or 90°.

12. Drive system according to claim 1 , wherein the elastically deformable section is arranged exactly or substantially centrally between the input shaft and the output shaft.

13. Drive system according to claim 12 , wherein the elastically deformable section has an elastic element, formed as a spring or an elastomer.

14. Drive system according to claim 13 , wherein each of the input shaft and output shaft comprises:
one or more eccentric sections, and each coupling element is coupled to a corresponding eccentric section.

15. Drive system according to claim 14 , wherein each coupling element is coupled to an end face of the input shaft and/or an end face of the output shaft.

Assignees

• Phys Instrumente Pi Gmbh & Co Kg

Inventors

• Ebert Michael
• Rudolf christian
• Sander Christian

Classifications

• F16H21/12

  for conveying rotary motion · CPC title

• Y10T74/18392

  Crank, pitman, and crank · CPC title

• F16C3/28

  Adjustable cranks or eccentrics · CPC title

• F16C2300/62

  low pressure, e.g. elements operating under vacuum conditions · CPC title

• F16C2300/52

  low temperature, e.g. cryogenic temperature · CPC title