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Compound planetary friction drive

A technology of friction drive and composite planet, which is applied in the direction of friction transmission, transmission, belt/chain/gear, etc. It can solve the problems that the contact force of small friction drive cannot be guaranteed, and the compound drive is not attractive.

Active Publication Date: 2017-08-18
TECH UNIV DELFT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since this is too challenging to guarantee that the contact force for small friction drives will remain below a certain level, making compound drives even less attractive or a bigger challenge because efficient high-ratio drive requires driving Very precise control of the contact force level in the output stage of the device

Method used

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  • Compound planetary friction drive
  • Compound planetary friction drive
  • Compound planetary friction drive

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Embodiment Construction

[0021] reference figure 1 with figure 2 , Shows an exemplary compound planetary friction drive device according to the first basic embodiment, which is provided with a base or input first annular wheel 1. This first ring wheel 1 may for example be the housing of the "lower" part of the drive device according to the invention. The base or first annular wheel 1 can be rigidly attached to a fixed environment, or to an engine housing or power source structure. In addition, the compound planetary friction drive device has a drive or input sun gear 2, for example from a certain type of motor. The hollow composite planetary gear of the planetary friction drive device of the present invention is denoted by reference numeral 3. Each planetary gear 3 is, for example, a hollow tube, with a slight size difference between the "lower" part and the "upper" part of the tube. There is a transition zone between the "lower" and "upper" of the tube; this will be discussed below Figure 4 In th...

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Abstract

A compound planetary friction drive comprises an input shaft driving a sun wheel, wherein said sun wheel engages planetary wheels, which planetary wheels are arranged with a first part having a first radius and a second part having a second radius that differs from the first radius, and wherein a ring cylinder is provided that is engaged by the planetary wheels such that the sun wheel is in frictional engagement with the first part of the planetary wheels and the ring cylinder is in frictional engagement with the second part of the planetary wheels, wherein the planetary wheels are hollow and compressible.

Description

Technical field [0001] The present invention relates to a composite planetary friction drive device, which includes a first sun gear, wherein the first sun gear meshes with a planet gear, and the planet gear is provided with a first part having a first radius and a second part having a second radius, Wherein the second radius is different from the first radius, and a transition area is provided between the first part and the second part, and wherein at least one annular wheel driven by the planetary gear is provided, wherein The sun gear is frictionally fitted with the first part of the planetary gear, the first part of the planetary gear is frictionally fitted with the first annular wheel, and the second annular wheel is frictionally fitted with the second part of the planetary gear. Background technique [0002] JP S58 65361 discloses a planetary friction drive device with planetary rollers that have different radii and are coaxially connected to each other. [0003] A compound ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H13/06F16H13/10
CPCF16H13/06F16H13/10
Inventor 杰克·弗洛伊德·朔尔施
Owner TECH UNIV DELFT
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