JPH0331724U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a front view of the mechanism surrounding the shutter blade according to the present invention as seen from the photographing lens side, and Fig. 2A is a plane view of the shutter drive mechanism and mirror mechanism according to the present invention as seen from the photographing lens side in the shutter set state. Figure 2B is a side view of Figure 2A, Figure 3A
3B is a front view of the shutter drive mechanism and mirror mechanism according to the present invention viewed from the photographic lens side in a mirror-up state; FIG. 3B is a side view of FIG. 3A;
FIG. 4A is a front view of the shutter drive mechanism and mirror mechanism according to the present invention as seen from the photographic lens side immediately before the setting operation is completed, and FIG.
side view. 1... Shutter board, 1a... Exposure opening, 2
...Lead blade group, 2a, 2b, 2c, 2d...Divided blade, 3...Rear blade group, 3a, 3b, 3c, 3d
...Divided blade, 8... Leading blade drive lever, 9...
Spring, 13... Rear blade drive member, 12...
Set cam, 15... Spring, 18... Set link, 18a... Mirror actuating protrusion, 20...
Control cam, 30...Mirror box, 32...Mirror, 36...Mirror operating pin.

Claims (1)

[Claims for Utility Model Registration] (1) A mirror box having a mirror that can be moved between a mirror down position that guides an optical path to a viewfinder system and a mirror up position that guides an optical path to an image plane, and a shutter in which an exposure aperture is formed. a group of leading blades that are pivotally supported on a substrate and are divided into a plurality of pieces that shield the exposure opening in the unfolded state and open the exposure opening in the superimposed state; a leading blade driving member that is driven toward the front blade; and a trailing blade that is pivotally supported on the shutter board and is divided into a plurality of pieces that shields the exposure opening in the unfolded state and opens the exposure opening in the overlapped state. a trailing blade driving member that drives the front and rear blade groups from a superimposed state to a deployed state; and a trailing blade driving member that returns the leading blade group to the deployed state against the leading blade driving member and moves the trailing blade group toward the rear blade group. between a set position where the blades are returned to the superimposed state against the blade driving member and a retracted position where the leading blade driving member can drive the leading blade group and the trailing blade driving member can drive the trailing blade group. a setting member that is operable to operate the shutter; and a setting member that is connected to a motor and that positions the setting member in a retracted position prior to activation of the leading blade drive member and positions the setting member in the set position after one exposure operation is completed. In the single-lens reflex camera comprising a driving member, the setting member and the driving member are arranged so that when the setting member is in the set position, the mirror is in the mirror down position, and when the setting member is in the retracted position, the mirror is in the mirror up position. A single-lens reflex camera characterized in that the mirror is connected to the mirror. (2) In the single-lens reflex camera described in claim 1 of the utility model registration claim, the mirror is biased toward a mirror-down position, and the setting member resists the biasing force of the mirror when it operates to the retracted position. The single-lens reflex camera is characterized in that the mirror is moved to a mirror-up position by using a button. (3) In the single-lens reflex camera according to claim 1, the mirror is biased toward a mirror-up position, and when the setting member operates to the set position, the mirror is biased against the biasing force of the mirror. A single-lens reflex camera, characterized in that the mirror is moved to a mirror-down position.