JPH07128806A - 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 paper box 60 is constituted of plural covers 61-66 in order to cover each surface of a box type unit main body. A large exposing aperture 70 is set up from the central part of an upper surface cover 62 to a front surface cover 63, and a rising part formed on the unit main body is protruded from the aperture 70. As to the upper surface cover 62; the central part of the front end edge is notched by the exposing aperture 70 to be the same surface rectangularly continued.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens-fitted photo film unit in which a film is incorporated and a unit body incorporating 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. The unit main body includes a main body base in which a storage room for a photographic film and a cartridge is formed, an exposure unit attached to the main body base, and a front cover and a rear cover that are respectively placed on the front and back surfaces of the main body base. Most of these are plastic molded products, and the manufacturer collects used unit bodies, and after disassembly, they are reused as parts or as raw materials.

In some recent cameras, the exposure range for the film is arbitrarily set 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 to. 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. This type of camera is known from Japanese Utility Model Laid-Open No. 3-122435.
It is equipped with a mechanism to switch the exposure range for the film by moving the light-shielding plate in and out of the optical path after the shooting lens, and to inform the user of which exposure range the shooting is performed. In addition, a view range switching device is incorporated in the finder optical system.

In the above-described 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 incorporated 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 components around the finder optical system, it becomes necessary to provide a stepped projecting ridge on the upper surface of the unit body.

FIG. 7 shows an appearance of a unit main body of a lens-fitted film unit having the above-mentioned exposure range switching function. The unit main body 2 has 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 rear surface, respectively. It consists of A shutter button 6 is integrally provided on the upper surface of the front cover 4, and a raised portion 7 protruding in a step shape from the upper surface to the front surface is formed. The raised portion 7 includes a switching mechanism, a shutter mechanism, for switching the exposure range and the visual field range incorporated in the main body base 3.
And a switching knob 9 which covers the photographic lens 8 and the like, and which is used to switch the exposure range and the visual field range from the front thereof.
Is protruding. Further, a finder 10 is provided on the front surface of the raised portion 7, and a counter window 11 for confirming the number of remaining films is provided on the upper surface. Further, from the rear cover 5, the winding knob 1 which is rotated when the film is wound.
2 is protruding.

FIG. 8 is an exploded view of a paper box covering the unit main body constructed as described above. Paper box 15
Includes a back cover part 16, a top cover part 17, a front cover part 18, a bottom cover part 19, and left and right side cover parts 2 in order to wrap each side of the box-shaped unit body.
It is composed of 0 and 21. The paper box 15 is provided with openings 22 to 24 and a cutout 25 at required parts, and the unit body 2
The field-of-view range switching mechanism, the raised portion 7 around the photographing lens, the shutter button 6, the viewfinder eyepiece window (not shown), the winding knob 12 and the like are exposed to the outside. The glue allowance piece 26 is used for gluing when the paper box 15 is assembled in a box shape.

[0007]

However, when the upper cover 17 is completely divided into the left and right by the large opening 22 as in the paper box 15 described above, the upper cover 17 is moved in the left-right direction. The strength against the pulling force is weak. Further, since the opening edge of the exposure opening 22 is formed long over the opposite edge portion of the upper surface cover portion 17, the opening edge is curved and easily lifted from the unit main body, so that it is not caught during handling of the lens-fitted film unit. It tends to occur. Therefore, the conventional paper box 15 has a problem that the upper surface cover portion 17 is torn from the exposure opening 22 along the front and rear fold lines.

In order to maintain the strength of the paper box, it is also proposed that the entire surface be glued for reinforcement or that 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 improving the strength of the outer package without increasing the cost. The purpose is to provide a unit.

[0010]

In order to achieve the above object, the lens-fitted photo film unit of the present invention is provided with a step on the upper surface of the unit body in order to cover the mechanical parts incorporated in the unit body. The ridge is provided, and the ridge is kept within a range that does not divide the upper surface of the unit body, and the covering surface of the exterior body that covers the upper surface of the unit body is made into the same continuous surface, and the ridge is projected to a part thereof. The exposed opening is formed.

In the lens-fitted film unit according to a second aspect of the present invention, the raised portion is continuously formed so as to reach a part of the front surface of the unit body, and the exterior body covering the upper surface and the front surface of the unit body is covered. The exposure opening is continuously formed over the surface.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 2 shows a lens-fitted film unit of the present invention. The unit body 2 shown in FIG.
The same reference numerals are given to the members common to and. 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 has a shutter button 6, a photographing lens 8,
Switch knob 9 for changing screen size, finder 1
There are openings for exposing 0, the counter window 11, the winding knob 12, etc. to the outside. Then, it is possible to take a picture with the unit body 30 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 6 and a viewfinder objective window 43 are integrally formed on the front cover 38, and a raised portion 44 projecting in a step shape from the central portion of the upper surface to the front end portion.
Are formed. An operation plate 45 and a cover plate 46 are detachably incorporated in the front surface of the front cover 38. The operation plate 45 is integrally provided with a panoramic field frame 47 and a switching knob 9. The panoramic view frame 47 is
The viewfinder 10 is formed in a size that defines the field of view range to the same aspect ratio as the panorama size. Further, the cover plate 46 is integrally provided with a full-size visual field frame 48 that defines the same aspect ratio as the full-size, and an elongated hole opening 49 for movably exposing the switching knob 9 to the outside.

The operation plate 45 is mounted on the front surface of the finder objective window 43 so as to be slidable along the film feeding direction. Then, the panoramic field frame 47 is operated by sliding the switching knob 9 in the elongated hole opening 49.
Can be moved between a panoramic shooting position located on the optical axis of the viewfinder and a normal shooting position retracted from the panoramic shooting 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 50 integrally formed with the operation plate 45, an intermediate lever 51, a torsion spring 52, a crank lever 53, and upper and lower light shielding plates 54 and 55.
It is assembled around a dark box 40 having 9 at the top. The finder lens 39 includes an objective lens 39a and an eyepiece lens 39b. The finder objective window 43 of the front cover 38 and the finder eyepiece window 3 of the rear cover 35.
It is arranged between 6 and 6.

The panoramic visual field frame 4 formed on the operation plate 45
The cam plate 50 presses the intermediate lever 51 provided above the finder lens 39 while the camera 7 is being moved from the normal shooting position to the panoramic shooting position. By this pressing,
When the intermediate lever 51 is rotated counterclockwise against the urging force of the torsion spring 52, the rotatable crank lever 53 inserted inside from the side surface of the dark box 40 is rotated clockwise. .

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 field frame 47 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 50 and the intermediate lever 51 are assembled and the front surface around which the operation plate 45 is arranged are arranged around the finder lens 39. The parts and the parts are respectively projected. These projecting portions are covered with the taking lens 8 by the raised portions 44 which continuously project 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 60 covering the unit main body 30 constructed as described above.
The paper box 60 includes a back cover portion 61 and a top cover portion 6 in order to wrap each surface of the box-shaped unit body 30.
2, a front cover part 63, a bottom cover part 64, and left and right side cover parts 65, 66. Further, a glue margin piece 67 is continuously provided on the top surface cover portion 62, the bottom surface cover portion 64, and the left and right side surface cover portions 65 and 66.

A large exposure opening 70 is provided from the central portion of the top cover portion 62 to the front cover portion 63.
The protruding portion 44 formed on the unit body 30 is projected from here. In addition, the upper surface cover portion 62 and the rear surface cover portion 6
1, openings 71 and 72 are formed, the shutter button 6 is opened from the opening 71, and the viewfinder eyepiece window 36 is opened from the opening 72.
Expose each. Further, a notch 73 is formed from the back cover part 61 to the top cover part 62, and the winding knob 12 is projected from this notch.

At each boundary between the cover portions 61 to 66 and the adhesive margin piece 67, a mountain fold line shown by a chain line in the drawing is formed. The paper box 60 is assembled into a box shape by folding along the mountain fold line, and then the glue margin piece 67 is glued to wrap the unit body 30.

When the paper box 60 is assembled into a box shape in this way, the upper surface cover portion 62 has a rectangular continuous rectangular shape in which the central portion of the front edge is cut out by the exposure opening 70, as shown in FIG. It becomes a face. Further, the peripheral edge of the upper surface cover portion 62 is connected to the rear surface cover portion 61, the front surface cover portion 63, the left and right side surface cover portions 65, 66, and the like. Therefore, the exposure opening 70 is prevented from expanding in the front-rear direction by the left and right flat portions 62a and 62b, and suppressed from expanding in the left-right direction by the flat portion 62c. Further, since the opening edges 70a to 70c of the exposure opening 70 are formed to be short, it is possible to prevent the opening edges 70a to 70c from being curved and floating from the unit body 30, and to prevent the opening edges 70a to 70c from being caught. To be prevented. Therefore, the unit body 30 is covered with the paper box 60 in a good state.

When the lens-fitted film unit constructed as described above is used to take a picture on a panorama size exposure screen, the photographer slides the switching knob 9 to bring the panoramic field frame 47 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 10 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 9 is moved, the cam plate 50 formed on the operation plate 45 presses the intermediate lever 51, and the intermediate lever 51 resists the urging of the torsion spring 52 and counterclockwise. Is rotated in the direction. Then, when the crank lever 53 is rotated clockwise by the rotation of the intermediate lever 51, the upper and lower light shielding plates 54 and 55 are moved from the full size exposure position toward the panorama size exposure position, and the exposure frame 34.
Exposure range is defined as a 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 6. With this shutter release, the taking lens 8
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 shooting is performed with a full size exposure screen, the switching knob 9 is again slid to move the panoramic field frame 47 to the normal shooting position retracted from the optical axis of the viewfinder. This allows the viewfinder objective window 43
A full-size visual field frame 48 formed on the cover plate 46 is located on the front surface of the camera, and the visual field range of the finder 10 is regulated to the same aspect ratio as that of the full-size camera. You can recognize that it has become. 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 9 is operated to select either the normal shooting position or the panoramic shooting position, and when "0" appears in the counter window 11 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 the film is taken out
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 only one ridge is formed on the upper surface of the unit main body has been described, but the number of ridges is not limited to one, and for example, a switching mechanism may be installed in front and rear. It may be arranged in a divided manner, and two ridges may be formed on the upper surface of the unit body.
In this case, like the paper box 80 shown in FIG. 6, two front and rear exposure openings 82 and 83 are opened in the upper surface cover portion 81, and a flat surface portion 84 is provided between these exposure openings 82 and 83 to form the upper surface cover portion 81. It only has to be continuous. According to this embodiment, all the opening edges of the exposure openings 82 and 83 are formed to be short, so that the exposure openings 82 and 83 are less likely to spread, and it is more effective for maintaining the strength of the paper box.

Further, in the above embodiment, the case where the raised portion is provided to cover the switching mechanism of the exposure range and the field of view of the finder has been described, but the raised portion formed on the unit main body is provided to 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.

[0033]

As described above, according to the present invention, the raised portion for covering the mechanical component incorporated in the unit body is kept within the range that does not divide the upper surface of the unit body and covers the upper surface of the unit body. Since the coated surface of the paper box is also formed so as to be the same continuous surface, the paper box resists pulling force in all directions, and the opening for protruding the ridge is easily widened. Disappears.
Further, since the opening edge of the opening is also shortened, the opening edge is prevented from being curved and floating from the unit main body, and it is possible to prevent the opening edge from being caught. Therefore, the paper box is not broken from the opening. Moreover, since it is not necessary to provide a special process for manufacturing, the cost does not increase. Further, since no glue is attached to the surface of the paper box, the used paper box can be recycled.

[Brief description of drawings]

FIG. 1 is a development view of a paper box embodying 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.

5 is a schematic view showing the shape of the upper surface cover portion of the paper box shown in FIG. 1. FIG.

FIG. 6 is a schematic view showing another example of the shape of the upper surface cover portion.

FIG. 7 is an external view showing a unit body of a conventional lens-fitted film unit.

8 is a development view of a paper box that covers the unit main body shown in FIG. 7. FIG.

[Explanation of symbols]

 2,30 Unit body 7,44 Raised part 8 Photographic lens 9 Switching knob 10 Finder 15,60,80 Paper box 17,62,81 Top cover part 18,63 Front cover part 22,70,82,83 Exposure opening

Claims (2)

[Claims] 1. A unit main body including a photographic film and a photographing mechanism and having a finder, and an exterior body covering the surface of the unit main body, and photography operation is possible through an opening formed in a required portion of the exterior body. In the lens-fitted film unit, a raised portion is provided on the upper surface of the unit body so as to cover the mechanical parts incorporated in the unit body, and the raised portion is provided with a step, and the raised portion does not divide the upper surface of the unit body. A film unit with a lens, characterized in that the exterior surface of the exterior body that covers the upper surface of the unit body is made into the same continuous surface, and an exposed opening through which the raised portion is projected is formed in a part thereof. 2. The raised portion is continuously formed so as to reach a part of the front surface of the unit main body, and the exposed opening is continuous across the respective covering surfaces of the exterior body covering the upper surface and the front surface of the unit main body. The film unit with lens according to claim 1, wherein the film unit with lens is formed.