JPH08292522A - Film unit with lens - Google Patents

Abstract

PURPOSE: To bring a paper box into close contact, without interstices, with a unit body whose front face is convex on the whole. CONSTITUTION: Perforation 32 is provided to be circular-arc shaped at a bend 30. When the paper box 4 is assembled to be a box type so that the unit body whose front face has a convexly curved surface on the whole is pressed on the paper box 4, the perforation 32 is folded to be vally-shaped, so that the front face 4a of the paper box 4 is brought into close contact with the convex surface of the unit body.

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 built-in film and a photographing lens and a shutter mechanism is entirely covered with a bent paper box.

[0002]

2. Description of the Related Art A film unit with a lens has 135
A film cartridge is built in, and the exposed film is taken into the cartridge each time a photo is taken. Therefore, when attempting to make the lens-fitted film unit compact, the outer shape of the cartridge has been a constraint, and thus far it has not been possible to make the overall thickness of the lens-fitted film unit less than or equal to the outer shape of the cartridge.

However, recently, various thin type film units each having a lens-equipped film unit whose overall thickness is equal to or less 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 cartridge is projected in a semi-cylindrical shape following the outline of the cartridge, and the part with the built-in shooting lens corresponds to the focal length of the shooting lens. In addition to projecting to the above position, the applicant sells "Shashin-run. Super 800" (trade name) having a thickness equal to or less than the outer diameter of the cartridge. Not only has this been achieved a considerable reduction in appearance compared to the conventional one, but it can also be easily pocketed when not in use.

Further, in order to distinguish the product from other products by giving a clear design, a part in which the front surface of the unit main body is projected in a semi-cylindrical shape following the contour of the patrone described above and a photographing lens are incorporated. There has been proposed a unit main body which is formed in a convex shape as a whole except for a portion and is formed of a curved surface.

The unit body as described above is punched out into a paper box shape from a sheet material made of paper on which a maker's name and a pattern are printed in order to prevent dirt from adhering to the unit body and intrusion of dust. It is formed by covering the whole. This paper box is provided with a curved portion for covering the above-mentioned semi-cylindrical protruding portion.
A fold line is formed in each part of the paper box, and the bent part is bent into a box shape while the semi-cylindrical protruding part is pressed against the curved part.

[0006]

SUMMARY OF THE INVENTION In the above description, the semi-cylindrical protruding portion does not completely adhere to the curved portion of the paper box and rises up, and dust enters through the gap between the paper box and the unit body. May impair function. Also,
In the unit body in which the front surface of the unit body is entirely convex and is configured as a curved surface as described above, the close contact between the front surface of the unit body and the paper box is particularly impaired.

The present invention has been made to solve the above problems, and provides a lens-fitted film unit in which a front surface of a unit main body formed of a curved surface having an overall convex shape can be covered with a paper box without a gap. It is intended to be provided.

[0008]

In order to solve the above-mentioned problems, in the invention described in claim 1, the film and the cartridge are housed, the photographing lens and the shutter mechanism are incorporated, and the entire front surface has a convex shape. It consists of a unit body with a curved surface and a semi-cylindrical grip part that bulges out from the curved surface, and a paper box that covers the unit body including the curved surface and the grip part. Perforations are formed at the boundaries to form valley fold lines, and the paper box is closely attached to the front of the unit body without gaps.

In the invention according to claim 2, the boundary between the curved surface and the grip portion is curved so as to be convex toward the grip side, and the valley fold line is formed along this curve. According to the third aspect of the invention, the convex height of the curved surface is 1 to 5 mm. In the invention according to claim 4, 1 of the perforations
The cut length is 1 to 10 mm.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 3 shows the appearance of a lens-fitted film unit of the present invention, FIG. 2 shows the unit body used in the present invention, and FIG. It shows a state viewed from the front side. The lens-fitted film unit 2 comprises a unit body 3 and a paper box 4 covering the surface thereof. The front surface of the lens-fitted photo film unit 2 has a convex surface as a whole except a portion which is bulged by a grip portion 8 which will be described later, and is formed of a curved surface 35, so that good holding can be performed. There is.

The unit main body 3 includes a main body 5 in which a film and a cartridge are incorporated, a shutter mechanism and a winding stop mechanism are incorporated, and a front cover 6 and a rear cover 7 which are hooked on the front and back sides thereof, respectively. It is configured.

The front surface 3a of the unit body 3 has a convex shape as a whole and is formed by a curved surface 9. In addition, each part is rounded to be compact and thinner than the diameter of the cartridge. The outer wall of the cartridge storage chamber provided in the main body 4 projects in a cylindrical shape. In response to this, a grip portion 8 that is raised in a semi-cylindrical shape is formed on the left side of the front cover 6.

A counter window 10 is formed on the upper surface of the front cover 6, and a shutter button 11 is integrally provided.
A finder window and a strobe window are provided on the front surface of the front cover 6, a photographing lens 15 and a strobe light emitting section 16 incorporated in the main body section 5 are exposed, and a strobe switch 17 is integrally formed.

The front surface 3a of the unit main body 3 is curved as a whole to form a curved surface 9 as shown by a chain line. This curved surface realizes a shape that easily holds the lens-fitted film unit 2 when the unit body 3 is tightly covered with the paper box. The height of this convex portion is formed in the range of 1.0 mm to 5.0 mm.

At the main part of the paper box 4, a ridge 10, a shutter button 11 and a counter window 10 around the taking lens 15 are provided.
Openings and notches are formed in each part to expose the above to the outside. In addition, the fold 2 is formed at the boundary between the surfaces of the paper box 3.
5 and notches 26 are provided and can be bent during assembly. The glue allowance 27 is used for pasting when assembling the paper box 4 into a box shape.

A curved portion 30 is formed on the left side of the front surface 4a of the paper box 4 so as to be in close contact with the grip portion 8 by providing a plurality of longitudinal grooves to reduce bending strength and facilitate bending. There is. Further, similar grooves are provided on the right side and the upper side of the front surface 4a of the paper box 4 so that they can be easily attached to the rounded portion of the unit body 3.

A perforation 32 is formed in an arc shape at the right end of the curved portion 30. When the paper box 4 is assembled, the paper box 4 is valley-folded along the boundary between the grip portion 8 and the curved surface 9, and the curved portion 30 bulges forward along with the formation of the curved surface 35. One cut of the perforation 32 is formed in the range of 1.0 mm to 10.0 mm depending on the curvature, the paper quality, and the like.

Further, on the rear surface 3b of the paper box 3, a linear groove similar to the above is formed in a range where the user's thumb touches at the time of photographing to form a slip stopper 34. The openings, folds 25, perforations 32, etc. provided in the paper box 4 are formed when the sheet-like material is punched into the shape of the paper box 4.

The operation of such a configuration will be described.
When the unit main body 2 is covered with the paper box 3, the front surface 3a of the unit main body 3 is pressed onto the paper box 4, and the respective surfaces are bent so as to wrap the unit main body 3 along the folds 25 and the cuts 26 of each part. After that, the glue margins 27 are adhered to each other.

When the front surface 3a of the unit body 3 is pressed against the front surface 4a of the paper box 4 to assemble the paper box 4 into a box shape, the perforations 32 are valley-folded along the boundary between the grip portion 8 and the curved surface 9 to form a curved surface 35. The curved portion 30 is bulged forward to form a close contact with the boundary between the grip portion 8 and the curved surface 9 and the front surface 3a of the unit body 3 and the front surface 4a of the paper box 4 are closely contacted. Since the perforation 32 has a weak restoring force, this portion is less likely to be affected by habits, moduli, etc., and the front surface 3a of the unit body 3 is held in a state in which the front surface 4a of the paper box 4 is covered without a gap.

As a result, a gap is not formed between the unit body 3 and the paper box, which is unsightly in appearance, and dust or foreign matter does not enter through the gap, so that a sense of stability when holding the lens-fitted film unit 2 is obtained. Is greatly improved.

[0022]

As described above, according to the lens-fitted photo film unit of the present invention, the unit main body having the curved surface and the grip portion which are entirely convex on the front surface is formed at the boundary between the curved surface and the grip portion. Since it is covered with a paper box in which perforations are formed to form the folding line, it is possible to provide a lens-fitted film unit having a good appearance and operability and a unique shape.

[Brief description of drawings]

FIG. 1 is a surface development view of a paper box used in the present invention.

FIG. 2 is a perspective view showing a unit main body which is entirely covered with the paper box shown in FIG.

FIG. 3 is an external view of a film unit with a lens.

[Explanation of symbols]

 2 Film unit with lens 3 Unit body 3a Front surface 4 Paper box 4a Front surface 8 Grip part 9 Curved surface 25 Fold line 26 Cut 30 Curved part 32 Perforated line 35 Curved surface

Claims (4)

[Claims] 1. A film and a cartridge are housed, a photographing lens and a shutter mechanism are incorporated, and a front surface has a curved surface having a convex shape, and a semi-cylindrical grip portion is bulged from the curved surface. And a paper box that covers the unit body including the curved surface and the grip portion. The paper box has perforations for forming a valley fold line at the boundary between the curved surface and the grip portion. A film unit with a lens. 2. The lens according to claim 1, wherein a boundary between the curved surface and the grip portion is curved so as to be convex toward the grip side, and the valley fold line is formed along the curve. Film unit with. 3. The lens-fitted film unit according to claim 1, wherein the convex height of the curved surface is 1 to 5 mm. 4. The length of one cut of the perforation is 1 to
The film unit with a lens according to claim 3, wherein the film unit has a length of 10 mm.