Torsion spring assembly, camshaft phaser and belt or chain tightener therewith

A technology of torsion springs and assemblies, applied in the directions of springs/shock absorbers, belts/chains/gears, springs, etc., can solve undesired problems and achieve the goals of avoiding resonance, improving spring characteristics, long service life and durability Effect

Active Publication Date: 2019-03-01
SCHERDEL INNOTEC FORSCHUNGS UND ENTWICKLUNGS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These torsion springs are disadvantageous because of undesirable vibrations in some operations involving high resonance
This makes torsion springs of this type unsuitable for certain areas of use, especially those involving dynamic loads

Method used

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  • Torsion spring assembly, camshaft phaser and belt or chain tightener therewith
  • Torsion spring assembly, camshaft phaser and belt or chain tightener therewith
  • Torsion spring assembly, camshaft phaser and belt or chain tightener therewith

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0057] figure 1 A perspective view of the torsion spring assembly 2 including the torsion spring 4 and the internal damping spring 20 is shown obliquely from above. The torsion spring 4 wound with the spring wire includes a torsion spring winding 6 forming a cylindrical spring body extending around a central axis or a spring axis. The torsion spring 4 includes four torsion spring windings 6 and a first torsion spring wire end 8 and a second torsion spring wire end 10 in an exemplary manner. Of course, the torsion spring 4 may also include more or fewer torsion spring windings 6. The torsion spring 4 is designed to receive the force acting on it through its torsion spring wire ends 8 and 10 in the direction of rotation.

[0058] The torsion spring winding 6 includes a radially inner side 12 having an inner diameter and a radially outer side 14 having an outer diameter, wherein the inner diameter and the outer diameter are different from each other and can be adapted to match spec...

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PUM

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Abstract

According to the invention, a torsion spring assembly (2) comprises: a torsion spring (4) with a cylindrical flexible element consisting of a coiled spring wire having a plurality of torsion spring coils (6), and with a first and a second torsion spring wire end (8, 10) for absorbing the force in the direction of rotation; and an absorbing spring (20) lying on the interior of the torsion spring (4), and comprising a cylindrical flexible element made of a coiled spring wire, having a plurality of absorbing spring coils (22), and a first and a second absorbing spring wire end (24, 26). The outerfaces of the absorbing spring coils (22) partially extend into the gap (28) created between each two neighboring torsion spring coils (6), and lie on in particular round or bevelled inner contact areas (30) of each two neighboring torsion spring coils (6) with a substantially outwardly-radial bias.

Description

Technical field [0001] The present invention relates to a torsion spring assembly and a cam phaser and a belt or chain tensioner having the torsion spring assembly according to the present invention. Background technique [0002] The known torsion spring can be used in a cam phaser or in a belt or chain tensioner to keep the two movable elements of the cam phaser or the two movable elements of the belt or chain tensioner in the initial position, Or return the two movable elements of the cam phaser or the two movable elements of the belt or chain tensioner to the initial position. These torsion springs are disadvantageous because undesirable vibrations occur in some operations involving high resonance. This makes this type of torsion spring unsuitable for certain applications, especially those involving dynamic loads. Summary of the invention [0003] Therefore, the object of the present invention is to provide a torsion spring with improved spring characteristics, which is suita...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F3/06F01L1/00
CPCF16F3/06F16F2236/08F01L1/024F01L1/3442F01L1/46F01L2001/34483F16F1/025F16F1/042F16F2224/0208F16F2234/02F16F2236/085F16H7/1281F16H2007/081F01L1/00
Inventor 托马斯·劳什格奥尔格·汉尼格克里斯托夫·安格曼
Owner SCHERDEL INNOTEC FORSCHUNGS UND ENTWICKLUNGS
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