Title:
DRIVING FORCE TRANSMITTER AND LENS MIRROR CYLINDER
Document Type and Number:
Japanese Patent JP3450345
Kind Code:
B2
Abstract:
PURPOSE: To provide a driving force transmitter which can switch an input without performing any special operation and is suitable to employ an ultrasonic motor as a system of input by having two systems as input and one system as output.
CONSTITUTION: A gear 17 gear-connected to a ultrasonic motor A side and a gear 21 meshed with a gear 35 are set as an input side and a retainer gear is set as an output side. A ball member 22 which is fit in a V-shaped groove formed by the inner circumferencial face of the gear 17 and an outer member 18 pressurized in the axial direction, is set so as to be pressed against the circumferencial face of the gear 21 by elastic force of a pressure member 19. And the gear 21 is brought in frictional contact with a shaft 16 by means of a friction spring 24. This frictional force is set larger than the frictional force with the ball member 22 pressed by the gear 21.
Inventors:
Takashi Suzuki
Mitsuru Shinohara
Mitsuru Shinohara
Application Number:
JP5814792A
Publication Date:
September 22, 2003
Filing Date:
March 16, 1992
Export Citation:
Assignee:
Canon Inc
International Classes:
F16H1/22; F16H13/08; G02B7/09; (IPC1-7): F16H13/08; G02B7/09
Domestic Patent References:
| JP3144412A |
Attorney, Agent or Firm:
Masayuki Kishida (2 outside)