JPH01128326U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the camera shutter mechanism of the present invention in an exploded state, Fig. 2 is a central vertical sectional view of the entire camera incorporating this shutter mechanism, and Fig. 3 is an arrow taken along the - line in Fig. 2. Viewed cross-sectional view, Figure 4 is the 3rd
The left side view of the figure and FIG. 5 are explanatory views of the operation in a state where the shutter release lever is pulled up and engaged with the engagement edge of the shutter operation lever. 1...Camera body, 2...Film cartridge, 3...Lens opening frame, 4...Finder, 9...
...Camera lens, 10...Lens holder, 11...
Mouth frame cover, 10a, 11a...lens light entrance hole,
12... Shutter operation lever, 15... Fulcrum part,
16... Engaging edge, 17... Finger press tongue piece, 18...
... Shutter plate, 19... Engaging protrusion, 20... Shutter push-down operation section, 21... Shutter plate pivot pin, 24... Shutter plate rotation biasing spring, 25...
Light shielding lid, 25a...Concentric light entrance hole, 28...Shutter release lever, 29...Shutter operating projection, 30
... Lever pull-up operation part, 31 ... Arc-shaped notch, 32 ... Shutter release lever pivot pin, 37
...Spring for biasing the shutter release lever rotation.

Claims (1)

[Scope of utility model registration request] A shutter mechanism that is built in between the lens aperture frame of the camera body and the aperture frame cover that is fixed to the front end of the lens aperture frame. A shutter operation lever that is elastically displaced from the fulcrum so that when the finger pressing tongue piece is pressed down with a finger, the forward protruding engagement edge above the fulcrum is retracted rearward, and the engagement edge of the shutter operation lever is at a lower position. One end has a protruding engagement protrusion and a shutter push-down operation part, and the middle part is pivotally supported by a pivot pin and rotates within a certain range in the vertical direction so that the lens light entrance hole can be opened and closed on the front end surface of the lens aperture frame. a shutter plate that can be opened, a light-shielding lid inside the aperture frame cover that has a concentric light inlet hole that matches the lens light inlet hole and is fixed to the front end surface of the lens aperture frame so as to cover the shutter plate; and this light-shielding lid. A spring provided therein for rotationally biasing the shutter plate in the closing direction, a shutter operating protrusion that can be engaged with and detached from the engaging edge of the shutter operating lever and the engaging protrusion of the shutter plate, and a lever pull-up operating part at one end. and an arc-shaped cutout that matches the shutter closing part of the light-inlet hole of the light-shielding lid is provided on the other end side, and the other end is positioned between the light-shielding lid and the mouth frame cover, and the other end is arranged to allow light to enter the front end surface of the lens mouth frame. A shutter release lever is pivotably supported by a pivot pin on the side of the hole and can be rotated within a certain range in the vertical direction. The spring is located below the slope of the engagement protrusion and has a stronger spring force than the shutter plate biasing spring that stops the shutter plate at the lower rotation limit where the arc-shaped notch is located at the shutter closing part of the light-shielding cover light entrance hole. The shutter mechanism of the camera.