JPH0449615Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a film cartridge loading type camera which is used by loading a film cartridge.

[Conventional technology]

Conventionally, a film cartridge was installed in the camera body (film magazine disclosed in Japanese Patent Publication No. 17829/1973).
The camera is equipped with a loading section, a drive gear with which a driven gear of a film cartridge meshes with the cartridge loading section, and a rotation operation knob that rotates the drive gear and winds the film of the film cartridge one frame at a time. is disclosed in Japanese Patent Publication No. 53-2049 and is well known.

[The problem that the idea attempts to solve]

The conventional cartridge-loaded camera can only be used to take photos on film loaded in a cartridge, and cannot be used as a daylight camera to take daylight photos on low-sensitivity photosensitive paper. There was a problem with lack of versatility.

[Means to solve the problem]

In order to solve the above-mentioned problems, this invention has a camera body that has a film cartridge loading frame and a low-sensitivity photosensitive paper loading frame, and the front central part of the cartridge loading frame and the photosensitive paper The front end opening of the loading frame is provided with a mouth frame of the same shape and size, and the cartridge loading frame of the camera body has a drive gear that engages with the driven gear of the film cartridge, and a drive gear that rotates the drive gear. It is equipped with a rotating knob that is driven and winds up the loaded film in the film cartridge one frame at a time. Then, a lens aperture frame with a built-in camera lens is removably fitted and fixed to the two aperture frame parts of the camera body, and the lens aperture frame and the front end of the lens aperture frame are fixedly attached. A shutter mechanism is installed between the lens opening frame cover and the shutter plate, which opens and closes the lens light entrance hole in the lens opening frame, and can be fully opened manually or automatically operated by pushing the shutter control lever. It's complicated.

[Effect]

The cartridge loading type camera having the above configuration can be used by loading a commercially available film cartridge into the cartridge loading frame of the camera body, and by fitting and fixing the lens opening frame into the front center opening of the cartridge loading frame. It can be used as a regular photo camera that takes pictures on film. In addition, by loading low-sensitivity photosensitive paper into the photosensitive paper loading frame of the camera body and fitting and fixing the lens opening frame into the front end opening of this photosensitive paper loading frame, the shutter plate of the shutter mechanism can be manually operated. When fully opened, it can be used as a daylight camera to take daylight photographs on low-sensitivity photosensitive paper. The photosensitive paper is loaded one by one into the photosensitive paper loading frame of the camera body, and after capturing an image of a landscape or the like, it is removed and developed with a developer.

〔Example〕

An embodiment of this invention will be described below with reference to the drawings. In the drawing, reference numeral 1 denotes a camera body that is used by loading a film cartridge 2. This camera body 1 includes a loading frame portion 1a of the film cartridge 2 and a lower Loading frame portion 1b of sensitive photosensitive paper P and finder 4
It is constructed as an integral molded product of synthetic resin, with mouth frame parts A and B of the same shape and size provided at the front center part of the cartridge loading frame part 1a and the front end opening of the photosensitive paper loading frame part 1b. Inside the cartridge loading frame 1a of the camera body 1, there is a drive gear 6 that meshes with the driven gear 5 of the film cartridge 2, and this drive gear 6 is rotationally driven to wind the loaded film f of the film cartridge 2 one frame at a time. A rotating operation knob 7 for raising is installed as shown in FIGS. 1 and 3. In addition,
The photosensitive paper P is attached to the photosensitive paper loading frame 1 of the camera body 1.
The photosensitive paper setting frame 40 is removably fitted into the photosensitive paper setting frame 40 and is loaded therein.

Reference numeral 3 denotes a lens frame which is detachably fitted to the outside of the two frame portions A and B of the camera body 1 with interchangeability. The lens frame 3 is formed in a rectangular cylindrical shape, and a lens receiving opening 8 at the center of the front end holds a camera lens 9 (convex lens) and a cylindrical lens holder 10.
2, the center of the front end plate of the lens holder 10, which is flush with the front end face of the lens frame, and the projections 3a and 3b on the front end of the lens frame 3 are
The frame cover 11, which is attached by hole engagement with the lens 10, has lens light entrance holes 10a, 11a at its center which coincide on the lens optical axis.

Reference numeral 27 denotes a shutter mechanism that is incorporated between the lens opening frame 3 and the opening frame cover 11 as shown in FIGS.
8. Consists of a light-shielding lid 25 and a shutter release lever 28. The shutter operation lever 12 is arranged and fixed on one side of the front end of the lens mouth frame 3,
The elastic plate 13 has a lower end mounting portion 14 fitted into the side cut groove 3c of the lens aperture frame 3 as shown in FIG. An integral molding of synthetic resin, which is provided with a fulcrum part 15 that extends above the fulcrum part 15 of the elastic plate 13, an engaging edge part 16 that projects forward, and a finger press tongue piece 17 that extends rearward. It is attached in such a manner that when the finger pressing tongue piece 17 at the upper end is pressed down with a finger, the forward protruding engagement edge 16 above the fulcrum part 15 is elastically displaced from the fulcrum part 15 so as to be retracted rearward. There is.

The shutter plate 18 is connected to the shutter operating lever 12
As shown in FIG.
It has a shutter push-down operation part 20 at one end that protrudes rearward in a crank shape, and an intermediate shaft hole 18a near the engagement protrusion 19 is fitted into a pivot pin 21 protruding from the front end surface of the lens mouth frame 3. The lens is inserted into the front end surface of the lens opening frame 3 so as to be able to open and close the lens light entrance hole 10a, and is rotated in the shutter closing direction by a rotation biasing spring 24 disposed inside the light shielding lid 25. Forced. The shutter plate 18 is pivotally supported so that it can rotate within an angular range of about 50 degrees in the shutter opening direction (counterclockwise direction in FIG. 3) from the shutter closed state shown in FIG. The rotation limit state (clockwise rotation limit state in Figure 3) is the lower rotation limit state (counterclockwise rotation limit state in Figure 3) when the shutter is manually opened by the upper limit stopper 22 of the lens mouth frame 3. condition) is the lower limit stopper 2 of the lens opening frame 3.
3 is now regulated.

The light shielding lid 25 has lens light entrance holes 10a and 11a.
concentric light entrance hole 25a and a plurality of holes 26,
26a, 26b, and these holes 26, 26a, 2
6b to the lever pivot pin 21 and the mouth frame protruding pin 21
a, 21b, and is fixed to the front end surface of the lens mouth frame 3 so as to cover the shutter plate 18, and the operating section side partially protrudes from the cover side opening in the mouth frame cover 11 having an opening on the side surface. The interior is in good condition.

The shutter release lever 28 includes a shutter actuation protrusion 29 which has a quarter circle shape and projects rearward and is capable of being engaged with and detached from the engagement edge 16 of the shutter operation lever 12 and the engagement protrusion 16 of the shutter plate 18. A composite structure having a lever pull-up operation part 30 protruding perpendicularly to the shutter operating protrusion 29 at one end, and an arc-shaped notch 31 at the other end that matches the shutter closing part of the light-shielding lid light entrance hole 25a. The light-shielding lid 25 and the mouth frame cover 1 are formed of an integrally molded resin product.
By inserting the pivot pin 32 into the front end pin hole 34 of the lens opening frame 3 at a side position of the light entrance hole 10a on the front end surface of the lens opening frame 3 at the other end, the pivot pin 32 can be used as a fulcrum. It is pivoted so that it can rotate within a certain range in the vertical direction. The shutter release lever 28 is configured so that it can be rotated upward within an angular range of approximately 35 degrees from the rotation lower limit state shown in FIG. 3, the shutter actuating projection 29 is positioned below the slope of the shutter plate engaging projection 19 by the rotation biasing force of 37, and the arc-shaped notch 31 is located at the shutter closing portion of the light-shielding lid light entrance hole 25a. It is stopped at the lower limit of rotation as shown. The spring 37 that biases the shutter release lever 28 to rotate downward is a coil spring having a stronger spring force than the rotation bias spring 24 of the shutter plate 18, and is a coil spring having a stronger spring force than the rotation bias spring 24 of the shutter plate 18. 35 and a lower projection 36 at the front end of the lens mouth frame 3, as shown in FIG.

Thus, the shutter mechanism having the above-mentioned structure is configured such that the shutter release lever 28 stops rotating at the lower limit position in the third position.
In the state shown in the figure, the push-down operation part 20 of the shutter plate 18
The shutter plate 18 can be fully opened manually by pressing down with a finger, and when the shutter pressing operation is released after a predetermined exposure time has elapsed, the shutter plate 18 is opened by the biasing force of the spring 24. The opening is operated to close again to the state shown in FIG. Such shutter operation is achieved by loading low-sensitivity photosensitive paper P into the photosensitive paper loading frame 1b of the camera body 1, and fitting and fixing the lens aperture frame 3 into the front end aperture frame B of the photosensitive paper loading frame 1a. This is done when the camera is used as a daylight camera, and by manually opening the shutter plate 18 fully, a daylight photograph of a landscape or the like can be taken on low-sensitivity photosensitive paper P with a long exposure time.

Figures 2 and 3 show a conventional camera in which a film cartridge 2 is loaded into the cartridge loading frame 1a of the camera body 1, and a lens opening frame 3 is fitted and fixed to the front central opening frame A of the cartridge loading frame 1a. This shows the state in which the shutter release lever 28 is used as a photographic camera, with the shutter plate 18 closed in the state shown in FIG. The protrusion 29 is latched onto the engagement edge 16 of the shutter operation lever 12 as shown in FIG. In this state, look through the viewfinder 4 to determine the imaging range, and press down the finger push tongue 17 of the shutter operation lever 12 to cause the lever engagement edge 16 to disengage from the shutter operating protrusion 29 of the shutter release lever 28. This shutter release lever 28 is connected to the spring 3.
It rotates downward with a force of 7. When the shutter release lever 28 rapidly rotates downward, the shutter operating protrusion 29 engages with the engagement protrusion 19 of the shutter plate 18, pushes the engagement protrusion 19 away, and the lever 28 moves as shown in FIG. Rotate to the downward rotation limit position shown. At this time, the shutter plate 18 is opened against the spring force by the pushing action caused by the engagement of the projection of the shutter release lever 28, and at the same time as the engagement of the projection is released, the shutter plate 18 is instantly closed by the elasticity of the rotation biasing spring 24. This automatic shutter operation enables a photograph of a person or the like to be taken on the film f loaded in the cartridge.

[Effect of idea]

Since the cartridge loading type camera of this invention has the above-described configuration, the film cartridge 2 is loaded into the cartridge loading frame portion 1a of the camera body 1, and the film cartridge 2 is loaded into the cartridge loading frame portion 1a of the camera body 1. By fitting and fixing the lens opening frame 3 to A, the camera can be easily used as a normal photo camera for taking pictures on the film f loaded in the cartridge. In addition, in order to load low-sensitivity photosensitive paper P into the photosensitive paper loading frame 1b of the camera body 1, and to fit and fix the lens opening frame 3 to the front end opening frame B of this photosensitive paper loading frame 1b, the shutter mechanism 27 shutter board 18
It can be fully opened manually and used as a daylight photo section for taking daylight photos on low-sensitivity photosensitive paper P.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the cartridge-loadable camera of the present invention in an exploded state, Fig. 2 is a central vertical sectional view showing the camera in an assembled state, and Fig. 3 is an arrow taken along the - line in Fig. 2. 4 is a partially cutaway left side view of FIG. 3, and FIG. 5 is an explanatory view of the operation of the shutter release lever in a state in which it is pulled up and engaged with the engagement edge of the shutter operating lever. 1...Camera body, 1a...Cartridge loading frame, 1b...Photosensitive paper loading frame, A, B...mouth frame, 2...Film cartridge, f...Cartridge loading film, P...Photosensitive Paper, 3... Lens opening frame, 4... Winder, 5... Driven gear of film cartridge, 6... Drive gear of camera body, 7... Rotation knob, 9... Camera lens, 1
0... Lens holder, 11... Mouth frame cover, 10
a, 11a...Lens light entrance hole, 12...Shutter operation lever, 18...Shutter plate, 24...Shutter plate rotation biasing spring, 25...Shading lid, 25a
...Concentric light entrance hole, 27...Shutter mechanism, 28...
... Shutter release lever, 37 ... Spring for biasing rotation of the shutter release lever, 40 ... Photosensitive paper setting frame.

Claims (1)

[Scope of utility model registration request] The cartridge has a loading frame portion for a film cartridge and a loading frame portion for low-sensitivity photosensitive paper, and a mouth frame portion of the same shape and size is provided at the front center portion of the cartridge loading frame portion and the front end opening of the photosensitive paper loading frame portion. The camera body is equipped with a drive gear in which the driven gear of the film cartridge meshes with the drive gear of the film cartridge, and a rotary operation knob that rotates the drive gear and winds the loaded film in the film cartridge one frame at a time. A lens aperture frame with a built-in camera lens that is removably fitted and fixed to two aperture frame parts with compatibility, and an aperture frame cover that is fixed to the front end of the lens aperture frame and the lens aperture frame. The shutter mechanism is equipped with a shutter mechanism built in between the lenses, and this shutter mechanism can be used to fully open the shutter plate that opens and closes the lens light entrance hole in the lens aperture frame by manual operation, or to operate the shutter automatically by pushing the shutter operation lever. A film cartridge loading type camera characterized by a mechanism that allows for