SPEED REDUCER FOR WALK ASSIST APPARATUS

Title:

SPEED REDUCER FOR WALK ASSIST APPARATUS

Document Type and Number:

WIPO Patent Application WO/2004/026215

Kind Code:

A1

Abstract:

A speed reducer (49) for a walk assist apparatus comprises first-third planetary gear mechanisms (P₁, P₂, P₃) between an input shaft (Si) connected to a motor (48) and an output shaft (So). The second planetary gear mechanism (P₂) is provided radially outside the first planetary gear mechanism (P₁) connected to the input shaft (Si), and the third planetary gear mechanism (P₃) is provided outside, in an axis (L) direction, the first planetary gear mechanism (P₁). As a consequence, the thickness of the speed reducer (49) can be made less than the case where the rotation of the input shaft (Si) is reduced in three stages by the first-third planetary gear mechanisms (P₁, P₂, P₃) and transmitted to the output shaft (So) with all the planetary gear mechanisms (P₁, P₂, P₃) laid over each other in the axis (L) direction. This results that the appearance of the walk assist apparatus when worn by a user is improved.

Inventors:

KUDOH HIROSHI (JP)
KATOH HISASHI (JP)

Application Number:

PCT/JP2003/011103

Publication Date:

April 01, 2004

Filing Date:

August 29, 2003

Export Citation:

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Assignee:

HONDA MOTOR CO LTD (JP)
KUDOH HIROSHI (JP)
KATOH HISASHI (JP)

International Classes:

A61H1/02; A61H3/00; F16H1/36; F16H1/46; (IPC1-7): A61H3/00; F16H1/36; F16H1/28; B25J19/00

Domestic Patent References:

WO2001013007A1

2001-02-22

Foreign References:

JPH07163607A	1995-06-27
JPH04501227A	1992-03-05
JPH03107650A	1991-05-08
JPH07163607A	1995-06-27

Other References: