Flexible shaft structure for transmitting high torque

Details Flexible shaft structure for transmitting high torque Flexible shaft structure for transmitting high torque

1996-07-10

1998-09-08

Walsh, Donald P.

Rotary shafts, gudgeons, housings, and flexible couplings for ro

Torque transmitted via flexible element

Element has plural convolutions wound about rotational axis

267155, F16C 100

Patent

active

058038124

ABSTRACT:
A flexible shaft structure comprises: a core wire having flexibility; holding portions provided on the core wire; a first wire wound around the core wire substantially at right angles with respect to an axial line of the core wire; and a second wire which is spirally wound around the first wire and of which both ends are respectively fixed to the holding portions. Accordingly, when an input-side holding portion rotates about a shaft, the rotational torque is transmitted to an output-side holding portion by the second wire. In this case, since the second wire is wound around the first wire wound around the core wire, the winding diameter of the second wire for transmitting rotational torque can be enlarged. As a result, tensile force acting on the second wire becomes smaller and stress acting on the core wire via the first wire or the holding portions accordingly becomes smaller.

REFERENCES:
patent: 1429146 (1922-09-01), Karge
patent: 1472782 (1923-11-01), Barber
patent: 1979869 (1934-11-01), Charter
patent: 2949753 (1960-08-01), Menoni
patent: 3000197 (1961-09-01), Ruegg et al.
patent: 3726133 (1973-04-01), Morgan
patent: 3791898 (1974-02-01), Remi
patent: 5052404 (1991-10-01), Hodgson
patent: 5165421 (1992-11-01), Fleischhacker et al.
patent: 5368283 (1994-11-01), Pavlin

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