PHASE REGULATING APPARATUS - HARMONIC DRIVE SYSTEMS

Title:

PHASE REGULATING APPARATUS

Document Type and Number:

WIPO Patent Application WO/1999/049238

Kind Code:

A1

Abstract:

A phase regulating speed reducer (20) in a phase regulating apparatus (100) has first and second cup-shaped wave motion gearings (30, 40). A first wave motion generator (33) for the first wave motion gearing (30) is connected to a phase regulating motor. A first flexible external gear (32) and a second flexible external gear (42) of the second wave motion gearing (40) are fixed together by a plurality of fastening bolts (60) so that these external gears are rotated together in a back-to-back state. A second wave motion generator (43) for the second wave motion gearing (40) is made non-rotatable. During a normal power transmission time, the phase regulating motor is not operated. Therefore, when the reduction ratio of the two gearings is set equal, an input rotation of the first wave motion gearing (30) into a first rigid internal gear (31) is outputted at the same rotational frequency from a second rigid internal gear (41). According to this arrangement, a phase regulating apparatus having a low rotation transmission error can be manufactured at a low cost.

Inventors:

KIYOSAWA YOSHIHIDE (JP)

Application Number:

PCT/JP1998/001350

Publication Date:

September 30, 1999

Filing Date:

March 25, 1998

Export Citation:

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Assignee:

HARMONIC DRIVE SYSTEMS (JP)
KIYOSAWA YOSHIHIDE (JP)

International Classes:

B41F13/004; B41F13/12; B41F13/14; B41F33/00; B41F13/00; B41F33/14; F16H1/32; F16H35/00; F16H49/00; (IPC1-7): F16H1/32; B41F13/12; B41F33/08

Foreign References:

JPH06337045A	1994-12-06
JPS59212556A	1984-12-01
JPH10100372A	1998-04-21
US4974470A	1990-12-04
US5269202A	1993-12-14
US5715732A	1998-02-10

Other References: