SILK HAT FLEXIBLE ENGAGEMENT GEAR DEVICE

Title:

SILK HAT FLEXIBLE ENGAGEMENT GEAR DEVICE

Document Type and Number:

WIPO Patent Application WO/1999/018364

Kind Code:

A1

Abstract:

A silk hat flexible external gear (13) of a flexible engagement gear device (11) comprises a body part (22), a diaphragm (23) and a boss (25). The one side of the shape of the cross section which is obtained by cutting a plate-shaped part (28) of the diaphragm (23) along a plane including the device axis (11a) is defined by a straight line (231) extending in a radial direction. The other side of the shape of the cross section is defined by a first convex circular arc (240), a concave circular arc (250) and a second convex circular arc (260) in this order from the boss side. Among those circular arcs, the first convex circular arc (240) has the smallest curvature and the concave circular arc (250) has the largest curvature. The concave circular arc (250) is at the center position of the plate-shaped part (28), which has the smallest thickness in the plate-shaped part (28). If the flexible external gear having this cross section is used, when the axial length is reduced, the stress concentration can be relieved without increasing the outer diameter.

More Like This:

JP5275957	Flywheel power storage device with superconducting magnetic bearings
JPS59113343	REDUCTION GEAR
WO/1996/018833	SILK HAT TYPE FLEXIBLE MESH ENGAGEMENT GEAR DEVICE

Inventors:

TAKIZAWA NOBORU (JP)

Application Number:

PCT/JP1997/003572

Publication Date:

April 15, 1999

Filing Date:

October 02, 1997

Export Citation:

Click for automatic bibliography generation Help

Assignee:

HARMONIC DRIVE SYSTEMS (JP)
TAKIZAWA NOBORU (JP)

International Classes:

F16H49/00; (IPC1-7): F16H1/32

Foreign References:

JPH08166052A	1996-06-25
JPH03118346U	1991-12-06
JPS6095235A	1985-05-28

Other References: