JPH07128805A - Film unit with lens - Google Patents

Abstract

PURPOSE:To improve the strength of an external body without making cost high while keeping recycling property. CONSTITUTION:A pair of notches 68 is provided on a position being a boundary between an upper surface cover 62 and a bottom surface cover 64 on a front surface cover 63 in order to curve a paper box 60 along the surface shape of swollen part formed on an unit main body. A large exposing aperture 69 is set up from the central part of the upper surface cover 62 to the front surface cover 63, and a lifted part around a switching mechanism formed on the unit main body is protruded from the aperture 69. As to the exposing aperture 69; the upper left end 69a of the front surface cover 63 most proximate to the end of the notch 68 is largely curved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens-fitted film unit in which a unit body having a cartridge and a photographing mechanism is covered with an exterior body.

[0002]

[Prior Art] A film unit with a lens such as "Sharing Run High" and "Sharing Run Flash" (both are trade names) is provided by the applicant so that you can easily enjoy photography at a low price. It is manufactured and sold. The lens-fitted film unit is a unit body in which a photographic film and a cartridge are incorporated, and is covered with a paper box for exterior, and shooting operation can be performed with the paper box covered. Also, the unit body is mainly made of plastic, and the used unit body is collected by the manufacturer, and after disassembly, it is reused as a part or a raw material.

In order to improve portability of the lens-fitted photo film unit, various thin-type photo film units having an overall thickness not larger than the outer diameter of the cartridge have been tried. As an example of a thin film unit with a lens, part of the unit body with a built-in patrone is projected in a semi-cylindrical shape following the outer diameter of the patrone, and the part with the taking lens is set as the focal length of the taking lens. The present applicant has proposed that the thickness of the cartridge is equal to or less than the outer diameter of the cartridge except that the cartridge is projected to the corresponding position. According to this, not only can the appearance be considerably thinned as compared with the conventional one, but it can be easily put in the pocket when not in use.

On the other hand, in recent cameras, the exposure range for the film is between the standard exposure range (24 mm × 36 mm) and the panoramic exposure range (13 mm × 36 mm) in the middle of photographing one film. There is one that can be switched arbitrarily. The film frame shot in the panoramic exposure range can provide a landscape print that is longer than the standard print, so that the user can enjoy two types of photography depending on the subject. As is known from Japanese Utility Model Laid-Open No. 3-122435, this type of camera is equipped with a mechanism for moving a light-shielding plate in and out of an optical path after the taking lens to switch the exposure range for the film, and further, for any exposure. A field-of-view range switching device is incorporated in the finder optical system in order to inform the user whether or not photographing is being performed within the range.

In the above-mentioned lens-fitted photo film unit, attempts have been made to add the above-mentioned exposure range switching function. However, with the lens-fitted film unit, if the field-of-view range switching device is built into the viewfinder optical system like a normal camera, the structure around the viewfinder becomes considerably complicated, and the number of parts and the number of assembly steps increase, and automatic assembly is also possible. It becomes difficult and the cost increases significantly. To deal with this, it is easy to incorporate the visual field range switching device outside the finder optical system,
In order to secure a space for incorporating these parts around the finder optical system, it becomes necessary to provide a stepped projecting portion on the upper surface or the front surface of the unit body.

FIG. 5 shows the external appearance of the unit main body of the lens-fitted film unit having the above-mentioned exposure range switching function. The unit main body 2 includes a main body base 3 having a built-in film and a shutter mechanism, an exposure range switching mechanism, and a visual field range switching device, and a front cover 4 and a rear cover 5 that are hooked to the front surface and the back surface, respectively. It consists of In the main body base 3, the outer wall of the portion where the cartridge is incorporated is raised in a cylindrical shape,
Accordingly, the semi-cylindrical bulging portion 6 is also provided on the left side of the front cover 4.
Are formed. The bulging portion 6 is used as a grip when the lens-fitted film unit is used.

Further, the front cover 4 is integrally provided with a shutter button 7 on the upper surface thereof, and is formed with a raised portion 8 projecting in a step shape from the central portion of the upper surface to the front surface. This ridge 8
Covers a switching mechanism, a shutter mechanism, a photographing lens 9 and the like, which are incorporated in the main body base 3 for switching the exposure range and the visual field range, and is used for switching the exposure range and the visual field range from its front surface. The switching knob 10 is projected. Furthermore, a finder 1 is provided on the front surface of the raised portion 8.
1. A counter window 12 is provided on the upper surface to check the number of remaining films. In addition, a winding knob 13 that is rotated when the film is wound up projects from the rear cover 5.

FIG. 6 is an exploded view of a paper box covering the unit main body constructed as described above. Paper box 15
Openings 16 to 18, a notch 19, and a pair of notches 20 are provided in a required portion of the. An exposure range 16 and a view range switching mechanism, and a ridge 8 that covers the periphery of the taking lens protrude from the large-sized exposure opening 16, and a shutter button 9 and a viewfinder eyepiece window (not shown) are externally provided from the openings 17 and 18. Exposed to. The winding knob 13 projects from the cutout 19. The cuts 20 are for bending the paper box 15 along the surface of the bulging portion 6 that is raised in a semi-cylindrical shape, and the portion sandwiched by the cuts 20 is curved. The glue allowance piece 21 is used for gluing when the paper box 15 is assembled in a box shape.

[0009]

However, when it is attempted to make the lens-fitted film unit thinner, as described above, the unit main body 2 includes the bulging portion 6 in which the cartridge is incorporated, the switching mechanism and the shutter mechanism. That is, the ridge portion 8 of the portion in which the above are incorporated is formed in a position close to each other. Therefore, even in the paper box 15 that covers the unit main body 2, the cut 20 and the exposure opening 16 are formed close to each other, so that the paper box 15 is sandwiched between the end of the cut 20 and the opening edge of the exposure opening 16. The problem of being cut at the part is likely to occur.

Further, in order to maintain the strength of the paper box, it has been proposed that the entire surface be glued for reinforcement, or the unit body and the paper box are adhered to each other to eliminate a gap and prevent the paper box from rising. However, these methods increase the number of manufacturing steps and increase the cost. Moreover, in all cases, since the entire surface of the paper box is glued, it is difficult to remove only the part to which the glue is attached, which is unsuitable for reusing as a paper material after melting the paper box. Met.

The present invention has been made in order to solve the above problems, and has a lens-equipped film capable of maintaining the recyclability and increasing the strength of the outer package without increasing the cost. The purpose is to provide a unit.

[0012]

In order to achieve the above object, the lens-fitted photo film unit of the present invention is provided with a step on the front surface of the unit body in order to cover the mechanical parts incorporated in the unit body. A bulge is provided, and the bulge is formed so that the portion close to the semi-cylindrical bulge that bulges to the front side has a greatly curved shape, and covers the front of the unit body. A notch for bending the covering surface along the surface shape of the bulging portion and an exposed opening for protruding the raised portion are formed in a part of the surface.

[0013]

FIG. 2 shows a lens-fitted film unit embodying the present invention. The members common to the unit main body 2 shown in FIG. 5 are denoted by the same reference numerals. The unit main body 30 is mainly made of plastic and is covered with a paper box 60 whose outer surface is printed to make its appearance beautiful. The paper box 60 is provided with openings for exposing the shutter button 7, the photographing lens 9, the switching knob 10 for switching the screen size, the finder 11, the counter window 12, the winding knob 13 and the like to the outside. And
It is possible to take a picture while the unit body 30 is covered with the paper box 60.

FIG. 3 is an exploded view of the unit body 30. A cartridge chamber 32 and a film roll chamber 33 are integrally formed in the main body base 31, and an exposure frame 34 is provided between them. The exposure frame 34 is
It is formed in the size of full size, and 1 on the back side
35 types of photo film with patrone are loaded,
It is housed in a light-tight manner with the rear cover 35. After this cover 35
A finder eyepiece window 36 is provided on the. A mechanical unit 37 is detachably attached to the front surface of the main body base 31, and the upper surface, front surface, and left and right side surfaces are covered with a front cover 38. The mechanical unit 37 has a configuration in which an exposure screen switching mechanism 41 and an exposure imparting mechanism 42 are assembled to a dark box 40 having a finder lens 39 on the top.

A shutter button 7 and a finder objective window 43 are integrally formed with the front cover 38, and a cartridge chamber 32 formed in the main body base 31 is provided on the front left side.
A semi-cylindrical bulging portion 44 corresponding to the outer wall shape is formed. In addition, a raised portion 45 protruding in a step shape from the central portion of the upper surface to the front surface is formed. The raised portion 45 has a shape in which an upper left end portion 45a on the front surface side is largely curved.

An operation plate 46 and a cover plate 47 are detachably mounted on the front surface of the front cover 38. Operation board 4
6, a panoramic field frame 48 and a switching knob 10 are integrally provided. The panoramic visual field frame 48 is formed in a size that defines the visual field range of the finder 11 to have the same aspect ratio as the panoramic size. The cover plate 47 is integrally provided with a full-size field frame 49 that defines the same aspect ratio as the full-size, and an elongated hole opening 50 for movably exposing the switching knob 10 to the outside. In addition, the upper left end portion 46 of the operation plate 46 and the cover plate 47
a and 47a are similar to the upper left end portion 45a of the raised portion 45,
Each has a large curved shape.

The operation plate 46 is mounted on the front surface of the finder objective window 43 so as to be slidable along the film feeding direction. Then, the switching knob 10 is provided with the long hole opening 50.
By operating the slide inside, the panoramic view frame 4
8 can be moved between a panoramic photographing position located on the optical axis of the finder and a normal photographing position retracted from the panoramic photographing position.

FIG. 4 shows a main part of the exposure screen switching mechanism 41. The exposure screen switching mechanism 41 is roughly divided into a cam plate 46b integrally formed with the operation plate 46, an intermediate lever 51, a torsion spring 52, a crank lever 53, and upper and lower light shielding plates 54 and 55, and a viewfinder lens 39. Is assembled around a dark box 40 having an upper part.
The finder lens 39 includes an objective lens 39a and an eyepiece lens 39b, and is arranged between the finder objective window 43 of the front cover 38 and the finder eyepiece window 36 of the rear cover 35.

The panoramic field frame 4 formed on the operation plate 46
While the camera 8 is being moved from the normal shooting position to the panoramic shooting position, the cam plate 46b presses the intermediate lever 51 provided above the finder lens 39. By this pressing, when the intermediate lever 51 is rotated counterclockwise against the bias of the torsion spring 52, the rotatable crank lever 53 inserted inside from the side surface of the dark box 40 is rotated clockwise. Turn to.

In the dark box 40, a rotatable upper light shield plate 54 is provided.
Also, a lower light shielding plate 55 is attached. Upper light shield 54
An arm 57 having a pin 56 formed at its tip, and an arm 58 with which the pin 56 abuts on the lower light shielding plate 55.
Are provided respectively. Furthermore, these arms 5
A spring 59 is hooked on 7, 58, and the upper shading plate 54
And the lower light shielding plate 55 are urged to the full size exposure position retracted from the optical path.

The crank lever 53 has an upper light shielding plate 54.
Is pivoted on. When the crank lever 53 is rotated clockwise in accordance with the movement of the panoramic view field frame 48 to the panoramic photographing position, the upper light shielding plate 54 resists the bias of the spring 59 and emits light from the full size exposure position. It moves toward the panoramic size exposure position that projects onto the road. At the same time,
The lower light shielding plate 55 is moved from the full size exposure position to the panorama size exposure position via the pin 56.

When the exposure screen switching mechanism 41 is incorporated in the unit main body 30, the upper surface portion around which the cam plate 46b and the intermediate lever 51 are assembled and the front surface where the operation plate 46 is arranged are arranged around the finder lens 39. The parts and the parts are respectively projected. These protruding portions are covered together with the taking lens 9 by a raised portion 45 which continuously protrudes in a step shape from the upper surface to the front surface of the front cover 38.

FIG. 1 is an exploded view of a paper box that covers the unit main body 30 having the above-described structure. The paper box 60 is composed of a back cover part 61, a top cover part 62, a front cover part 63, a bottom cover part 64, and left and right side cover parts 65 and 66 to wrap each surface of the box-shaped unit body 30. Has been done. In addition, the top surface cover portion 62, the bottom surface cover portion 64, and the left and right side surface cover portions 6
A glue margin piece 67 is connected to each of 5, and 66.

The front cover portion 63 has a top cover portion 62.
Also, a pair of cuts 68 are provided at positions that are boundaries with the bottom cover portion 64. The notch 68 is formed in the paper box 60 so as to follow the surface shape of the bulging portion 44 protruding in a semi-cylindrical shape.
Is for bending, and extends from the position corresponding to the right end of the bulging portion 44 to the left side surface cover portion 65.

A large exposure opening 69 is opened from the central portion of the upper surface cover portion 62 to the front surface cover portion 63, and the raised portion 45 formed on the unit body 30 is projected from this. The exposed opening 69 has a shape following the raised portion 45, and the front cover portion 6 closest to the end portion of the cut 68.
The upper left end 69a of 3 is largely curved.

The back cover portion 61 and the top cover portion 6 are also provided.
2, openings 70 and 71 are formed, and a notch 72 is formed from the rear surface cover portion 61 to the upper surface cover portion 62. The viewfinder eyepiece window 36 is exposed through the opening 70, the shutter button 7 is exposed through the opening 71, and the winding knob 13 is projected through the notch 72.

The paper box 60 is assembled into a box shape by folding along a mountain fold line indicated by a dot-dash line and a valley fold line indicated by a broken line, and a part surrounded by a pair of notches 68 and a valley fold line is formed. It is bent in a semi-cylindrical shape so as to project to the surface side. When the unit body 30 is housed inside, the glue margin piece 67 is glued.

The paper box 60 thus assembled in a box shape has a shape in which the opening edge of the exposure opening 69 is separated from the end of the notch 68 by the amount that the upper left end 69a of the exposure opening 69 is largely curved. And the notch 68 and exposed opening 6
A large flat portion is formed between the first and second portions. This ensures the strength of the portion sandwiched by the notch 68 and the exposure opening 69, so that this portion is not easily cut. Therefore, the unit body 30 is covered with the paper box 60 in a good state.

When taking a picture on a panorama size exposure screen using the lens-fitted film unit constructed as described above, the photographer slides the switching knob 10 to bring the panoramic field frame 48 onto the viewfinder optical axis. Move it to the panorama shooting position you have located. As a result, the view field range of the finder 11 is defined to have the same aspect ratio as the panorama size, and the photographer can recognize that the panorama size is ready for shooting.

As the switching knob 10 is moved, the cam plate 46b formed on the operation plate 46 presses the intermediate lever 51, and the intermediate lever 51 resists the bias of the torsion spring 52 and counterclockwise. Is rotated in the direction. And the intermediate lever 51
When the crank lever 53 is rotated in the clockwise direction by rotating, the upper and lower light shielding plates 54 and 55 are moved from the full size exposure position to the panorama size exposure position, and the exposure frame 3
The exposure range of 4 is defined as the panorama size.

Thereafter, after the film winding operation is performed, the framing is performed by looking through the viewfinder eyepiece window 36, and the shutter release is performed by operating the shutter button 7. With this shutter release, the taking lens 9
The upper and lower parts of the photographing light transmitted through the upper and lower light shielding plates 54,
The film is cut at 55 and enters the exposure frame 34, and is exposed on the film in a panoramic size screen.

When photographing is performed on the full-size exposure screen, the switching knob 10 is again slid to move the panoramic field frame 48 to the normal photographing position retracted from the optical axis of the finder. This allows the viewfinder objective window 4
A full-size visual field frame 49 formed on the cover plate 47 is located on the front surface of 3 and the visual field range of the finder 11 is regulated to the same aspect ratio as the full size.
You can recognize that you are ready to shoot in full size. Further, in conjunction with this switching operation, the upper and lower light shielding plates 54 and 55 are moved to the full-size exposure positions vertically retracted from the photographing optical path. Then, if a shooting operation is performed in the same manner, the exposure is performed on the film with a full-size screen.

Shooting is repeated while the switching knob 10 is selectively operated at either the normal shooting position or the panoramic shooting position, and when "0" appears in the counter window 12 for displaying the number of remaining films, shooting of all frames is performed. Has ended. Then, take the lens-fitted film unit to a development shop and request a DPE. Film development and print processing will be performed for each frame size in the same way as before, and print pictures of full size and panorama size will be mixed. Obtainable.

Unit body 3 after taking out the film
0 is collected by the manufacturer, where it is disassembled and then reused as parts or as raw materials. Also,
The paper box 60 is also reused as a paper material after being melted after removing the glued piece 67 to which the glue is attached.

In the above embodiment, the case where the raised portion is provided to cover the switching mechanism for the exposure range and the viewfinder range of the finder has been described. However, the raised portion formed on the unit body does not cover the switching mechanism. The present invention is not limited to the one provided, and may be for covering any mechanical component incorporated in the unit main body.

[0036]

As described above, according to the present invention, in order to cover the mechanical parts incorporated in the unit main body, the stepped projecting portion is provided from the upper surface to the front surface of the unit main body, and the raised portion is the cartridge. Since the portion close to the bulging portion covering the bulge is formed to be largely curved, the bulging portion and the bulging portion are formed at positions separated by the curved amount. As a result, in the paper box covering the unit body, a large flat surface portion is formed between the exposed opening for projecting the raised portion and the notch for bending the paper box along the surface shape of the bulging portion. The strength in the portion sandwiched by the exposure opening and the notch is secured, and it is not easily cut. Moreover, since it is not necessary to provide a special process for manufacturing, the cost does not increase. Also, since there is no glue on the coated surface of the paper box,
The used paper box can be recycled after being melted.

[Brief description of drawings]

FIG. 1 is a development view of a paper box according to the present invention.

FIG. 2 is an external view of a film unit with a lens embodying the present invention.

FIG. 3 is an exploded perspective view showing a unit main body.

FIG. 4 is an exploded perspective view showing an exposure screen switching mechanism.

FIG. 5 is an external view showing a unit main body of a conventional lens-fitted film unit.

FIG. 6 is a development view of a paper box that covers the unit main body shown in FIG.

[Explanation of symbols]

 2,30 Unit body 6,44 Swelling part 8,45 Raised part 9 Photographic lens 10 Switching knob 11 Finder 15,60 Paper box 16,69 Exposure opening 20,68 Cut

Claims (1)

[Claims] 1. A unit main body having a photographic film, a photographing mechanism, and a cartridge in which a photographed film is wound, and having a semi-cylindrical bulging portion following the outer diameter of the cartridge, and the surface of the unit main body. In a film unit with a lens, which is composed of an exterior body that covers the, and is capable of shooting operations through an opening formed in a required portion of the exterior body, a front surface of the unit body in order to cover a mechanical component incorporated in the unit body. Providing a raised portion protruding with a step, the raised portion is formed in a shape in which a portion close to the semi-cylindrical bulging portion is greatly curved,
In addition, a cut for bending the covering surface along the surface shape of the bulging portion and an exposure opening for projecting the raised portion are formed in a part of the covering surface of the exterior body covering the front surface of the unit main body. The featured film unit with lens.