JPH02275443A - Cartridge for film and camera device using this cartridge - Google Patents

Abstract

PURPOSE:To allow the finger touch mounting of the cartridge to a camera so as to attain the state ready to make photographing by providing projections or recesses for engagement which engage with the box part of a camera including a lens optical system at two points of the side faces facing each other in the outer peripheral part of the cartridge. CONSTITUTION:The two points AA', BB' on at least the side faces facing each other of the outer peripheral part of the cartridge are provided with the engaging parts 11 for engaging with the box part of the camera including the lens optical system. Further, a frame part 12 in the exposing aperture 10 of the cartridge is provided with a groove part 13 for engaging with the exposing aperture frame of the camera and is made into such construction in which the low surface part 14 thereof comes into contact with the exposing aperture frame of the camera to determine the reference position with a focal plane. The shielding from the external light is executed by the rugged fitting shape formed of the groove part 13 of the cartridge and the aperture frame 3a of the camera. The easy setting of the cartridge to the reference position for mating with the focal plane of the lens optical system of the camera is possible in this way and the external light from the boundary part between the cartridge and the box part of the camera is shielded when the cartridge is mounted to the camera in such a manner. The easy finger touch mounting of the cartridge is possible in this way and the state ready to make photographing is attained.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a film cartridge that stores a roll of film, and in particular a film roll chamber that stores unexposed film and a take-up chamber that winds exposed film. This relates to the structure of a film cartridge that is equipped with a film cartridge.

[Conventional technology]

Film cartridges that store rolls of film include those that only have a film roll chamber that stores unexposed film, as well as double film cartridges that also have a take-up chamber that winds exposed film. There is.

In this conventional film cartridge, as shown in FIG. Loaded into camera 5.

On the other hand, as shown in FIG. 1, a camera using this type of film cartridge includes a camera box section 1 that includes a lens optical system 3, a film winding drive system 4, and a cartridge storage section 5, and a box section 1 in which the cartridge is loaded. After that, close the back II 2 to complete the setting with the camera, which consists of a camera lid part for blocking external light.

[Problem to be solved by the invention]

When using a conventional camera, the user first opens the lid 2 of the camera, loads the cartridge 7, and closes the lid 2 again, thereby completing the preparation for photographing and starting photographing. This is how it used to be.

It was time consuming to open and close the camera lid and load the cartridge.

An object of the present invention is to eliminate this trouble and easily install a cartridge with a single touch to prepare for photographing.

[Means to solve the problem]

In order to attach the cartridge to the box part of the camera containing the lens optical system with one touch and make it ready for shooting, it is necessary to satisfy the following two functions.

The first is that when the cartridge is installed, it has a function that allows it to be easily set to a reference position to align the focusing plane with the camera's lens optical system. It has the function of blocking external light from the boundary of the area.

The present invention provides means for solving this problem.

As shown in FIG. 2, the structure of the cartridge includes an engaging portion 11 that engages with a box portion of a camera containing a lens optical system at at least two locations AA and BB on opposing sides of the outer periphery of the cartridge. In addition, a groove 13 is provided in the frame portion 12 of the exposure aperture 10 of the cartridge to engage with the exposure aperture frame of the camera, and the lower surface portion 14 thereof contacts the exposure aperture frame of the camera to determine the reference position of the focus plane. and the groove portion 13 of the cartridge.
This problem is solved by creating a structure in which external light is shielded by a concave-convex trapezoidal shape formed by the aperture frame 3a of the camera. Further, the camera structure is solved by providing an engaging portion that engages with the retaining portion of the cartridge.

〔Example〕

Examples of the present invention are shown in FIGS. 2 to 7.

FIG. 2 shows engagement protrusions 11a and l on the side of the cartridge.
An example in which lb is provided is shown.

FIG. 3 shows engagement recesses 15a and 1 on the side surface of the cartridge.
5b is shown.

4 and 5 show an embodiment of a method of engaging the box part of the camera and the retaining part of the cartridge.

6 and 7 show an embodiment of a method of covering a lens optical system section of a camera and a method of releasing the same.

A specific example will be explained with reference to FIG.

An engaging protrusion 11a is provided on the outer periphery of the cartridge molded from a plastic material such as polystyrene.

11b, and the camera box part is provided with hook parts 16a and '16b for engaging with the camera box part.

The hook portion has two elasticities, and when the cartridge is inserted, it is pressed against the end face of the cartridge and operates to open outward, allowing easy loading. Furthermore, the inner surfaces 17 of the hook portions 16a, 16b that come into contact with the engagement protrusions 11a, llb of the cartridge have elasticity so as to press the cartridge against the exposure aperture frame 3a of the camera.

For example, a metal spring member, a plastic spring member, a rubber elastic member, etc. are attached to the inner surface 17. By doing so, it is possible to constantly contact the exposure aperture frame 3a of the camera, and the reference position of the focal plane with the lens optical system can be determined. Further, the exposure aperture frame 3a of the camera and the exposure aperture groove 13 of the cartridge are in close contact with each other, and are also engaged with the projections and recesses, thereby making it possible to shield light from external light. Figure 5 shows
Another embodiment of the hook part of the box part of the camera is shown.

The hook portion 18 has an L-shaped hinge shape that is rotatable about a fulcrum 19. By pressing the bottom part 20 of the L-shaped hinge when inserting the cartridge, the hook part 18 rotates and engages with the engaging projections 11a and llb of the cartridge,
It becomes possible to fulfill the intended function.

Next, we will show a specific example of a cover method for protecting the lens optical system of the camera and a method for releasing the cover. Fig. 6 shows a method of covering the entire opening of the box part of the camera. Box part end 1a , cover member 21a on lb.
, 21b are fixed, and the other ends of the cover members overlap in the center. Further, the cover members 21a and 21b are connected at the central portion and both side portions by rubber elastic bodies 22a and 22b. When inserting the cartridge 7, cover member 2
1a and 21b are pushed into the cartridge storage part 5,
This opens the central overlap part of the cover member and releases the exposure opening 3a of the camera. Further, when the cartridge is taken out, the cover members 21a, 21b can be returned to their original state by the action of the rubber elastic bodies 22a, 22b connected at both side portions at the central portion of the cover members 21a, 21b. The cover member may be made of any material as long as it is flexible and can be freely deformed; for example, a plastic film such as a polyester film, a rubber elastic sheet, a metal/plastic composite sheet, etc. are used.

FIG. 7 shows a method of covering the exposure opening 3a of the box part of the camera, with co-wound cover members 23a and 2.
3b is arranged at the lower part of the cartridge storage parts 5a, 5b of the camera, and one member 24a of the co-wound cover member
, 24b protrude from the lower part of the cartridge storage section of the camera, and the ends thereof are located approximately at the center of the storage sections 5'a and 5b. Further, the other members 25a and 25b of the co-wound cover member similarly protrude from the lower part of the cartridge storage section, but extend upward along the side wall of the exposure opening 3a of the camera, and extend at the end of the exposure opening. , bent at an almost right angle to cover the opening, and 25 mm in the center.
a and 25b overlap.

When inserting the cartridge 7, cover members 24a, 2
4b is pushed in, and at the same time the central overlap of cover members 25a and 25b opens.

The exposure aperture 3a of the camera is released. Further, when the cartridge is taken out, the coil spring properties of the cover member 23a23b allow the cartridge to be returned to its original state.

The material of the cover member is 24a, 2 of the co-wound member.
4b is preferably made of a spring-elastic flying wing material or a plastic material.

The other 25a and 25b only need to have some degree of rigidity, and may be made of plastic film such as polyester, metal, etc.
A metal/plastic composite sheet is used.

Also, as a method for moving the cover member.

One-lever type applied to normal camera mechanisms.

A one-gear type or electrically actuated type may be used.

〔Effect of the invention〕

The present invention provides an engaging protrusion or a recess that engages with a box section of a camera containing a lens optical system on at least two opposing side surfaces of the outer circumference of the cartridge, and a mechanism that engages the cartridge with the camera. By providing the engaging portion, the camera can be attached to the camera with a single touch to make it ready for shooting. In addition, one aspect of the present invention is a film with a lens, for example, Fuji Photo Film--commercially available "
In that case,
A film cartridge can be incorporated at the manufacturing stage of the camera to create a film with a lens, and the feature in this case is that it can be reused rather than being a conventional disposable camera.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a conventional camera and film cartridge, and FIGS. 2 and 3 are a perspective view and a sectional view of an embodiment of the film cartridge of the present invention. 4 and 5 are perspective views and sectional views showing how the film cartridge of the present invention and the camera are connected, and FIGS. 6 and 7 show how the opening of the box part of the camera of the present invention is covered. A perspective view and a cross-sectional view are shown showing a method for canceling the release. 3a □ Camera exposure opening frame 5 Cartridge storage section 7 Film cartridge 10 Cartridge exposure opening 11 □ Cartridge protrusion engaging portion 15 Cartridge recess engaging portion 16.18 - Camera hook portion 21.23 - Cover member

Claims (3)

[Claims] (1) A film cartridge having a film roll chamber for storing a roll of unexposed film and a take-up chamber for taking exposed film, as well as an exposure opening for exposing the film in these spaces. 1. A film cartridge, characterized in that a mating part for mating with a box part of a camera containing a lens optical system is provided on at least two opposing sides of the outer peripheral part of the cartridge. (2) Uses a film cartridge with a film roll chamber for storing rolls of unexposed film and a take-up chamber for winding exposed film, as well as an exposure opening that exposes the film in these spaces. A camera device comprising: an engaging portion that engages with an outer circumferential portion of the cartridge at at least two opposing sides of an outer circumferential portion of a camera box portion that includes a lens optical system of the camera device. Device. (3) A cover member is attached to the outer opening of the camera box portion, which moves in conjunction with the cartridge when it is inserted.
The camera device described in section.