Barrier mechanism of camera

Details Barrier mechanism of camera Barrier mechanism of camera

1990-07-23

1992-07-14

Hix, L. T.

354266, G03B 926

Patent

active

051307308

ABSTRACT:
A barrier mechanism of a camera includes a cylindrical lens cover which has an aperture at its front face and which is supported to move between a photographing position and an accommodating position to the rear of the photographing position. At least one barrier is provided on the front end of the lens cover to open and close the aperture. A barrier opening and closing mechanism which opens and closes the barrier in association with the rotation of a cam ring is further provided. The barrier opening and closing mechanism includes a spring for biasing the barrier towards an open position, and an opening and closing pin which can be moved radially with respect to the lens cover. The pin closes the barrier when moved in the radial direction, and a closing lever is located at a predetermined position outside the lens cover and is biased to rotate to continuously press the opening and closing pin to close the barrier. The cam ring is located to normally prevent contact between the closing lever and the opening and closing pin. The cam ring is provided with an opening which permits the closing lever to rotate toward the opening and closing pin when the lens cover is moved to the accommodating position.

REFERENCES:
patent: 4944030 (1990-07-01), Haraguchi et al.
patent: 4989027 (1991-01-01), Ishii et al.

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