JP3667416B2 - Film unit with lens - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention covers a part of a unit main body exposed from a movable part of a shutter mechanism and a part of a release lever on a surface thereof, including an opening part with an exterior label coated with an adhesive. The present invention relates to a lens-fitted photo film unit that is adhesively fixed.
[0002]
[Prior art]
The lens-equipped film unit consists of a plurality of injection-molded products, and includes a simple filming mechanism and a unit body pre-loaded with a film with a cartridge, and a paper box that covers it. Therefore, it is widely used.
[0003]
The unit main body includes a main body base in which a cartridge chamber for storing a cartridge and a film chamber for storing a film roll are integrally formed, a mechanical unit provided on the front surface of the main body base and including a photographing lens and a shutter mechanism, and a main body From the back of the base, it is composed of a back cover that tightly closes the cartridge chamber and the film chamber containing the cartridge and the film roll, and a front cover that is provided to cover the mechanical unit. Has been. The main body base and the front and rear covers are integrally formed by injection molding, and the manufacturing cost is minimized.
[0004]
In such a lens-fitted photo film unit, an unexposed photographic film is pulled out of the film chamber by a winding operation, and a shutter charge is performed in conjunction with the winding operation, and shooting is performed when the release button is pressed. Then, the exposed photographic film is wound and stored in the cartridge by a winding operation.
[0005]
By the way, a release button is integrally formed on the upper portion of the front cover, and a release lever for operating the shutter mechanism by transmitting the pressing force of the release button to the shutter mechanism is provided on the front side of the front cover. It is integrally molded. The release lever is disposed so as to partially enter the opening formed in the front surface of the front cover, so that the thickness of the unit main body is suppressed.
[0006]
By the way, in such a film unit with a lens, an exterior body that is bent into a box shape and covers the entire surface of the unit main body is used. A belt-like exterior label that is wound around the central portion of the paper has been studied. When such a strip-shaped exterior label is used, the cost of the packaging process can be increased because it requires less exterior materials than the one that covers the entire surface of the unit body. The outer dimensions of the lens-fitted photo film unit can be reduced.
[0007]
[Problems to be solved by the invention]
However, in the case described above, since the release lever and the movable parts of the shutter mechanism are partially exposed from the opening on the front surface of the front cover, when the unit body is covered with a strip-shaped exterior label, the release label is applied to the exterior label. The movable parts of the lever and the shutter mechanism stick to each other, and smooth operation becomes difficult. In addition, if the finger is pressed from the outside during shooting or the like, it may adhere strongly and the shutter release may be disabled.
[0008]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a lens-fitted film unit in which a movable part of a shutter mechanism and a release lever are not attached to an exterior label.
[0009]
[Means for Solving the Problems]
In order to solve the above-described problem, in claim 1, a cover sheet is attached to a portion of the back surface of the exterior label that covers the opening. The exterior label is attached to the release paper in advance, and the release paper is surrounded by an endless cut line formed on the release paper when the release paper is peeled off from the exterior label. A cover sheet is configured by leaving a part of the outer surface of the exterior label on the back surface of the exterior label so as to cover the opening. Since the adhesive surface facing the opening was covered with the cover sheet, the movable part of the mechanical unit or a part of the release lever did not stick to the adhesive surface.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 6 shows an exploded perspective view of a unit main body used in the present invention. The unit main body 3 includes a main body base 5, a front cover 6 and a rear cover 7, a strobe unit 8, a mechanical unit 9 including a shutter mechanism and a film winding mechanism, a cartridge 10, and a film 11. The main body base 5, the front cover 6 and the rear cover 7 are resin molded parts integrally formed by injection molding.
[0011]
The mechanical unit 9 includes a driven sprocket that rotates once by the movement of one frame of the film, a cam that rotates coaxially with the driven sprocket, and slightly rotates the locking lever 12 clockwise when the film is wound up by one frame. A locking lever 12 that prohibits rotation of the winding dial 13 engaged with the spool of the cartridge 10 during winding, and a spring that urges the locking lever 12 clockwise to engage the cam and prohibit film feeding. And a shutter lever that is locked at the shutter charge position by the locking lever 12 and that opens and closes the shutter opening by kicking the shutter blade when the locking lever 12 rotates counterclockwise. doing.
[0012]
The main body base 5 is covered with a front cover 6 when the mechanical unit 9 and the strobe unit 8 are assembled on the front surface. A cartridge chamber 22 and a film chamber 23 are formed on both sides of the main body base 5. The cartridge chamber 22 and the film chamber 23 store a cartridge 10 and a film 11 that is drawn out of the cartridge 10 and formed into a roll. The
[0013]
A release button 16 that is pressed during photographing is integrally formed on the upper portion of the front cover 6. The release button 16 is integrally formed with a release lever 19 that rotates the locking lever 12 counterclockwise when the release button 16 is pressed to operate the shutter lever. Due to the convenience of integrally forming the front cover 6 by injection molding, the release lever 19 exposes the protruding portion 14, the viewfinder 11, and the like that protrude to cover the front cover 6 including the photographing lens 12 and the photographing mechanism. For example, a part of the opening 21 enters the opening 21 and the thickness of the unit body 3 is suppressed.
[0014]
The grip portion 15 protruding from the front surface of the front cover 6 protrudes in a semi-cylindrical shape following the outer shape of the cartridge chamber 22, and is used as a grip during photographing. The rear cover 7 is attached from behind the main body base 5 so as to cover the cartridge chamber 22 and the film chamber 23 in which the cartridge 10 and the film 11 are respectively stored.
[0015]
FIG. 5 shows the exterior label used in the present invention developed from the back side. The exterior label 4 is printed for decoration and is formed in a strip shape. The exterior label 4 is coated with an adhesive on the entire surface thereof, and is adhered and fixed to the center of the surface of the unit body 3 so as to surround the entire surface in a strip shape. The overlap margin 25 provided at the end is overlapped with the other end when the unit main body 3 is covered. The valley fold 24 shown by the alternate long and short dash line is folded along the surface shape of the unit body 3 when the exterior sheet 4 is attached to the center of the surface of the unit body 3. The perforation 25 is broken when the film that has been photographed is taken out.
[0016]
The required portions of the exterior label 4 are provided with openings 4a to 4d for exposing the protruding portion 14, the finder 11 and the like. A hatched portion beside the opening 4b indicates a range facing the opening portion 21 when the unit body 3 is covered with the exterior label 4, and a cover sheet 33 described later is attached thereto. It has been.
[0017]
FIG. 4 shows a state when an exterior label is made from a label material. The label material 29 is composed of a label sheet 30 and a release paper 31. An adhesive is applied to the entire back surface of the label sheet 30, and the label sheet 30 is attached to the release paper 31 with this adhesive so as to be integrated. The label material 29 is cut by a cut line represented by a solid line by operating a cutter from both the front surface side and the back surface side, thereby forming the exterior label 4.
[0018]
4A when the label material 29 is viewed from the label sheet side, the surfaces of the label sheet 30 are provided with openings 4a to 4d and cut lines 35 for forming the exterior labels 4 in solid lines. The label sheet 30 is cut to the boundary with the release paper 31 at the cut line 35. In FIG. 4B as viewed from the release paper 31 side, a cut line 36 for forming the cover sheet 33 described above with a part of the release paper 31 is provided on the surface of the release paper 31 with a solid line. ing. The release sheet 31 is cut to the boundary with the label sheet 30 by the cut line 36.
[0019]
When the cutting of the label sheet 30 and the release paper 31 is completed, the exterior label 4 is peeled off as shown in FIG. When the exterior label 4 is peeled off, a portion surrounded by the cut line 35 of the exterior label 4 is attached to the release paper 31, and openings 4 a to 4 d are formed in each part of the exterior label 4. At the same time, the cover sheet 33 surrounded by the cut line 36 of the release paper 31 is stuck to the surface of the exterior label 4 and is left on the exterior label 4 to obtain a developed view shown in FIG.
[0020]
As shown in FIG. 2, the lens-fitted film unit 2 is configured by covering the unit body 3 with the exterior label 4. The exterior label 4 is covered so as to surround the center of the surface of the unit main body 3 in a belt shape, and is adhered and fixed with an adhesive applied to the entire surface of the exterior label 4. The opening 21 described above is covered with the exterior label 4 to prevent dust and dust from entering from the opening 21. The exterior label 4 has a cover sheet 33 attached to a portion covering the opening 21. From the openings 4 a to 4 d formed in each part of the exterior label 4, the protruding portion 14, the finder 11, and the like are exposed. From both sides of the exterior label 4, the grip portion 15, the strobe light emitting portion 18, and the like are exposed.
[0021]
Briefly describing photographing with such a lens-fitted photo film unit, first, the winding dial 13 is rotated to wind up one frame of the film. The shutter lever is returned to the shutter charge position by the movement of one frame of the film and is locked by the locking lever 12. When the release button 16 is pressed, the release lever 19 rotates the locking lever 12 counterclockwise. The shutter lever released from the locking by the locking lever 12 kicks the shutter blade to open and close the shutter opening.
[0022]
FIG. 1 is a perspective view of an essential part of a lens-fitted photo film unit embodying the present invention. A cover sheet 33 is attached to the exterior label 4 so as to cover the opening 21, and covers the adhesive surface facing the opening 21 of the exterior label 4. Even when the exterior label 4 is pressed against the release lever 19 or the locking lever 12, the exterior label 4 does not stick to the release lever 19 or the locking lever 12.
[0023]
Further, in the above, a lens-fitted film unit in which the outer body label 4 surrounds the unit main body 3 is shown. However, the lens-fitted photo film unit that covers the unit main body 3 without making a round with the outer packaging label. The present invention may be applied.
[0024]
Further, the cover sheet 33 is not only formed on the portion covering the opening 21 described above. For example, in the case where a large opening into which the shutter lever enters is provided, a cover sheet may be newly provided in a portion covering the opening so that the unit main body 3 can be thinned. Further, instead of providing a cover sheet with a part of the release paper, the exterior label may be attached separately.
[0025]
【The invention's effect】
As described above, according to the lens-fitted photo film unit of the present invention, the cover sheet is attached to the portion of the back surface of the exterior label that covers the opening, and the adhesive surface that faces the opening is covered with the cover sheet. As a result, the movable part of the mechanical unit or a part of the release lever does not stick to the adhesive surface, and the shooting is not hindered.
[Brief description of the drawings]
FIG. 1 is a side cutaway view showing a main part of a lens-fitted photo film unit embodying the present invention.
FIG. 2 is a front perspective view of a lens-fitted photo film unit embodying the present invention.
FIG. 3 is a perspective view used for explaining how to peel off an exterior label used in the present invention.
FIG. 4 is an upper plan view used for explaining a state of creating an exterior label used in the present invention.
FIG. 5 is a development view of an exterior label used in the present invention.
FIG. 6 is an exploded perspective view of a unit main body used in the present invention.
[Explanation of symbols]
3 Unit body 4 Exterior label 6 Front cover 9 Mechanical unit 12 Locking lever 16 Release button 19 Release lever 21 Opening 30 Label sheet 31 Release paper 33 Cover sheets 35, 36 Cut line

Claims (2)

A unit main body comprising a mechanical unit comprising a simple shutter mechanism and a film winding mechanism, and a release lever for operating the shutter mechanism, wherein an opening for exposing at least a part of the movable part of the mechanical unit or the release lever is formed. In a film unit with a lens in which at least a part of the film is covered with an exterior label having an adhesive applied on the back surface, including the opening,
A film unit with a lens, wherein a cover sheet is attached to a portion of the back surface of the exterior label that covers the opening. The exterior label is affixed to a release paper in advance, and a part of the release paper surrounded by an endless cut line formed on the release paper when the release paper is peeled off from the exterior label The film unit with a lens according to claim 1, wherein the cover sheet is configured by being left in a portion of the back surface of the exterior label that covers the opening.

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