JP3201861B2 - Outer body for film unit with lens - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exterior body for a film unit with a lens, which has a built-in film and covers a unit body incorporating a photographic lens and a shutter mechanism.

[0002]

2. Description of the Related Art Film units with a lens such as "Sharun Run Hi" and "Sharun Run Flash" (both are trade names) can be used to take a picture immediately upon purchase, and develop directly after shooting. It is widely used because it is easy to go to the store where it is sold. From such usage, the cost of the lens-fitted film unit is reduced, and a paper box on which cosmetic printing is applied is used for the exterior. In addition, in order to improve portability, various attempts have been made to reduce the size.

As is well known, a 135-film patrone is incorporated in a lens-fitted film unit, and each time a picture is taken, an exposed film is wrapped around the patrone. Therefore, when trying to make the film unit with the lens compact, the outer diameter of the patrone is limited, and until now the overall thickness of the film unit with the lens could not be less than the outer diameter of the patrone.

However, recently, various types of thin film units having a lens unit with a lens whose overall thickness is equal to or smaller than the outer diameter of the cartridge have been tried. As an example of a thinned film unit with a lens, a part of the unit body in which the patrone is incorporated is projected in a semi-cylindrical shape following the outer diameter of the patrone, and the part in which the photographic lens is incorporated is adjusted to the focal length of the photographic lens. Other than protruding to the corresponding position, the applicant has examined a cartridge having a thickness equal to or less than the outer diameter of the patrone. According to this, not only the appearance can be considerably reduced in thickness as compared with the conventional one, but also it is possible to easily put it in a pocket when not in use.

FIG. 6 shows an external view of a unit body which has been made thinner as described above. The unit body 2 has a built-in film and patrone, a body part 4 in which a shutter mechanism and a locking mechanism are incorporated, and a front cover 5 and a rear cover 6 hooked to the front and rear surfaces thereof, respectively. I have. The outer wall of the patrone storage chamber provided in the main body 4 projects in a cylindrical shape, and a cylindrical bulge 7 is formed on the left side of the front cover 3 accordingly.
The raised portion 7 is used as a grip when using a film unit with a lens.

[0006] Further, a portion in which the shutter mechanism and the photographing lens 8 are incorporated is also covered by a raised portion 9 of the front cover 5. A finder window 10 is provided on the front surface of the front cover 5, and a finder lens 11 incorporated in the main body 4 is exposed. Further, a shutter button 12 is integrally provided on the upper surface of the front cover 5, and a counter window 13 is further formed. Reference numeral 14 denotes an operation dial which is turned when the film is wound up.

In order to cover the unit body 2 entirely with a paper box and also cover the surface of the protruding portion 7 with a paper box, a paper box having an expanded shape as shown in FIG. 7 can be used. Openings 16 to 20 and cutouts 21 are provided in required portions of the paper box 15. A raised portion 9 around the taking lens projects from the opening 16, and a lens 11 for a finder, a shutter button 12, The counter window 13 and the like are exposed to the outside. From the notch 21, the operation dial 1
4 protrudes. The glue allowance 22 is used for gluing when the paper box 3 is assembled into a box shape.

[0008] A pair of cuts 24 are formed in the paper box 15 to cover the surface of the raised portion 7 projecting in a semi-cylindrical shape. The cut 24 extends from a position corresponding to the right end of the raised portion 7 to a cover that covers the left side surface of the unit body 2. In addition, with respect to the portion sandwiched by the cuts 24, in consideration of bending along the raised portion 7,
It has a longer dimension. Then, the paper box 15 is bent along a mountain fold line indicated by a dashed line and a valley fold line indicated by a broken line, and a portion surrounded by a pair of cuts 24 and a valley fold line is half-cut so as to protrude to the front side. If it is bent in a cylindrical shape, the surface of the raised portion 7 can also be covered with the paper box 15.

[0009]

However, if a long cut 24 is made in the paper box 15 to reach the edge of the paper box 15 as described above, the strength of the paper box 15 is reduced. In particular, when manufacturing a film unit with a lens, a paper box is wrapped by using an automatic wrapping machine. Therefore, if there is a long cut 24 reaching the edge as described above, a portion sandwiched by the cuts is likely to bend. For this reason, when the paper box is transported in the unfolded state, the handling becomes troublesome, and the paper box is likely to be caught in the middle of the transport, and a trouble such as the paper box being torn along the cut 24 is likely to occur. In addition, it is possible to directly protrude from the opening formed in the paper box without covering the protruding portion 7, but since the protruding portion 7 is used as a grip, the unit main body 2 becomes dirty and may be used while the unit body 2 is being used. There is a concern that the paper box may be torn through the opening.

The present invention has been made in consideration of the above-mentioned problems, and has a lens with a protruding portion that appears on the surface of a unit body along its shape so as not to cause any problem in strength. An object of the present invention is to provide a film unit exterior body.

[0011]

Means for Solving the Problems In order to achieve the above object, an exterior body for a film unit with a lens according to the present invention comprises:
Built-in patrone to wrap the film
A semi-cylindrical bulge that follows the outer diameter of the patrone
Unit that can be formed and used as a grip
The film unit with lens that covers the
The exterior body is made of a material including a paper material.
In a part of the body, follow the surface of the semi-cylindrical ridge
Providing a bulge deformed by press molding, the press
Before molding, a humidifying treatment is applied to a portion of the
That the heat treatment was performed during the press molding.
It is a feature. Further, the heat treatment is performed at a high
It is preferably performed by waves or ultrasonic waves. Also said ridge
Even if ridges and grooves are formed on the surface of
Good. Also, the outer body is formed on the unit body.
With at least one of the upper and lower ends of the grip
Easily raise the ridge near the corresponding position
There is a notch for this, from this notch,
To the opening formed in the exterior body and adjacent to the cut
May be 3 mm or more. In addition, the press
The height of the ridge projected by the shape is 2 mm to 3 mm.
mm.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a film unit with a lens comprises a unit main body 2 and a paper box 30 covering the surface thereof. The unit main body 2 is the same as that shown in FIG. As shown in FIG. 2, the paper box using the present invention has openings 16 to 20, notches 21, and glue allowances at necessary parts necessary for the photographing operation, similarly to the paper box 15 in FIG. 7.
2 are provided.

The paper box 30 having the developed shape shown in FIG. 2 can also cover the surface of the raised portion 7 of the unit body 2.
A pair of cuts 31, 31 are formed. The length of the cut 31 is equal to or slightly longer than the length in the lateral direction at both end surfaces of the raised portion 7, and does not reach the edge of the paper box 30. The portion sandwiched between the pair of cuts 24 and the valley fold line indicated by the broken line becomes the grip cover portion 33. The interval between the two valley fold lines is also a semi-cylindrical raised portion 7.
It is better to keep it the same size as the width of or slightly wider. Such a paper box 30 is obtained by a process of performing cosmetic printing on the surface of a sheet-shaped backing sheet → the paper box 30 from the backing sheet to the developed shape shown in FIG.
Through the process of punching out.

The paper box 30 thus obtained is sent to an automatic packaging machine together with the completed unit body 2. In the automatic packaging machine, first, preliminary folding is performed in which a light crease is made along a mountain fold line indicated by a chain line in FIG. Next, as shown in FIG. 3, the grip cover portion 3 sandwiched by the cuts 31.
A semi-cylindrical male mold 35 is pressed against the back surface of 3 and pressed against a female mold 36 having a semi-cylindrical concave surface so that the grip cover portion 33 bulges outwardly in a semi-cylindrical shape. Let it. At this time, the portion shown by the broken line in FIG.

The height at which the grip cover 33 protrudes to the front side by this press forming is at most about 2 to 3 mm, so that only the male mold 35 and the female mold 36 having smooth molding surfaces are used. However, in order to improve the moldability, the surface of the male mold 35 and the female mold 36 may be formed with a ridge and a groove parallel to the respective generatrix. In this case, a vertical ridge 33a as shown in FIG. 1 is formed on the surface of the grip cover portion 33 after molding, which is convenient for improving grip feeling. In addition, when performing the above-mentioned press molding, heat molding using both high frequency waves and ultrasonic waves may be performed.

After the grip cover 33 is bent, the paper box 3 is folded along the mountain fold line, and the glue margin 22 is appropriately glued and assembled into a box shape. Then, the unit main body 2 is put into the paper box 30 in the middle of assembly, and finally the back cover is glued to obtain the product form shown in FIG. The surface of the protruding portion 7 protruding from the front surface of the unit main body 2 is tightly covered with a grip cover portion 33 that protrudes by curving toward the surface of the paper box 3 and is used as a grip. Note that the pre-folding and press forming described above may be performed in a separate step before being put into an automatic packaging machine.

As described above, if press forming is used when the grip cover 33 is bent in accordance with the raised portion 7 of the unit body 2, the length of the notch 31 is shortened even if the notch 31 is used, and the end of the paper box 30 is shortened. Since it is not necessary to extend to the edge, the strength of the paper box 30 is not weakened, and the portion sandwiched by the cuts 31 does not bend when the paper box 30 is developed and transported, so that the handling is easy. And no inadvertent tearing from the cut. Furthermore, since a part of the paper box is forcibly bent by press molding, the bent portion does not loosen during use, and a stable covering state can be maintained. It is desirable that the grip cover 33 be sufficiently pressed to prevent the peripheral portion from being torn, deformed, wrinkled, or the like during press forming. Further, the distance from the cut 31 to the opening 16 or the opening 18 is preferably 3 mm or more in order to prevent breakage.

The paper box 38 shown in FIG.
FIG. 5 shows this paper box 38 with the unit body 2.
Is shown. The cuts 39 are formed so that the convex portions face each other, and the grip cover portion 33 is press-formed so as to be curved to the front side similarly to the above-described embodiment.
When the unit main body 2 is covered with the paper box 38, the upper end and the lower end are slightly exposed from the cut 39 as shown in FIG. 5, but most of the raised portion 7 can be covered with the paper box 38. The same effects as those of the above embodiment can be obtained.

The above description has been made in accordance with the illustrated embodiment. However, depending on the shape of the protruding portion that has appeared on the surface of the unit body, it is not always necessary to cut the paper box.
It is also possible to simply respond by press molding. Further, in order to improve the moldability in such a case, it is advantageous to perform the heat molding using the above-described high frequency or ultrasonic waves together, and a humidification treatment may be performed on a portion that needs to be curved as a pre-process. It is also possible to use a resin sheet material as the exterior body of the present invention. In this case, a desired curved shape can be easily obtained by heat molding without making a cut.

Further, the present invention is not limited to the one which covers not only the protruding portion protruding according to the outer diameter of the patrone, but also the protruding portion 9 around the photographing lens or other unit main body.
Paper box that covers the ridges appropriately formed on the front, top, etc. of 2
It is also possible to cover most of the surface of the unit body 2 with a paper box. In this case,
It is better not to make a cut around the part that covers the raised part 9
Preferable and therefore easy to press form into cardboard material
Is used. Easy-to-press material
For example, laminate polyethylene film on the front and back of
There is a so-called PE coated paper that has been coated.
Pressing while heating to reduce the strength of the paper box
Bulges that follow the outer shape of the unit body 2
It can be formed. The above PE coated paper
Since the work of peeling the polyethylene film from the backing is relatively simple and can be automated, it is easy to recycle the backing by removing the paper box from the film unit with lens that has been used and collected, and then peeling off the polyethylene film. It can be carried out.

[0021]

As described above, according to the film body with lens of the present invention, the paper box is formed by press molding so as to follow the surface shape of the unit body. It is not necessary to make a cut to reach the edge. Therefore, since the strength of the paper box is not reduced and the paper box is not easily bent partially, the handling is ensured when the paper box is automatically assembled from the expanded state, and the paper box is broken along the cut. Trouble can be solved. Further, when the raised portion of the unit main body is used for the grip, the surface thereof is also covered with the curved portion of the paper box, so that the surface of the unit main body is hardly soiled, which is advantageous in reusing the unit main body. .

[Brief description of the drawings]

FIG. 1 is an external view of a film unit with a lens using a paper box of the present invention.

FIG. 2 is a development view of the paper box of the present invention.

FIG. 3 is an explanatory view of a press forming step.

FIG. 4 is a development view showing another embodiment of the present invention.

5 is an external view of a lens-fitted film unit using the paper box shown in FIG.

FIG. 6 is an external view of a unit main body.

FIG. 7 is a development view of a conventional paper box.

[Explanation of symbols]

 2 Unit main body 7 Raised part 30, 38 Paper box 31, 39 Cut 33 Grip cover part 35 Male type 36 Female type

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-45802 (JP, A) JP-A-4-1529 (JP, U) JP-A-3-60343 (JP, U) JP-A-3-603 56931 (JP, U)

Claims (5)

(57) [Claims] 1. A lens for enclosing a unit body having a built-in patrone for winding a photographed film, a semi-cylindrical bulge formed on the surface of the patrone following the outer diameter of the patrone, and using the bulge as a grip. With film unit
In exterior body prep, it said outer body is made of a material comprising a paper material, a portion of the exterior body, provided with the bulge portion which is deformed by press molding so as to follow the surface of the semi-cylindrical ridges Before the press molding, a portion where the bulging portion needs to be curved
Humidification treatment, and heat treatment during the press molding.
Exterior body for film unit, characterized in that the. 2. The heat treatment is performed by high frequency or ultrasonic waves.
2. The lens-equipped lens according to claim 1, wherein
Exterior body for LUM unit. 3. The surface of the ridge is parallel to the generatrix.
By forming ridges and grooves, irregularities were provided on the surface
3. The lens-equipped fiber according to claim 1, wherein
Exterior body for LUM unit. 4. The exterior body has a shape formed on the unit body.
At least one of the upper and lower ends of the formed grip
In the vicinity of the position corresponding to
There is a notch for From this cut, the cut formed in the exterior body
And the distance to the adjacent opening was 3 mm or more.
4. The film with lens according to claim 1,
Exterior unit for the unit. 5. The method according to claim 5, wherein the press-molding projects
The height of the raised part is about 2 to 3 mm
A film with a lens according to any one of claims 1 to 4.
Outer body for unit.