JPH05165156A - Film unit with lens - Google Patents

Abstract

PURPOSE:To allow an attachment for disassembling to be easily hooked to a locking pawl when a film unit with a lens is disassembled. CONSTITUTION:A locking pawl 23 provided at a left upper corner on the inside of a back cover 5 is engaged with a locking hole 24 formed on the upper surface of a front cover 3. Besides, a flat part 23a is formed on the tip side of the pawl 23 so that a jig for disassembling 25 is easily hooked. Since the flat part 23 is formed so that the upper surface thereof is exposed from the aperture part of the hole 24 under a state that the pawl 23 and the hole 24 are locked, the erected surface of a pawl 23b is retreated from the edge of the hole 24 when the flat part 23a is pressed by the attachment for disassembling through the hole 24 and the locking is released.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking claw for connecting parts of a lens-fitted film unit.

[0002]

2. Description of the Related Art A film unit with a lens called "Sharun" (product name), which can be called a kind of camera that has a built-in film in the unit body that incorporates a simple shooting mechanism so that you can easily take pictures at any time, is It is manufactured and sold by the applicant and is widely used. This lens-fitted photo film unit has a very simple structure, as known from Japanese Patent Publication No. 2-332615, for example.
It is manufactured by assembling multiple parts. As a method of joining a plurality of these components, there is a method of fixing them by ultrasonic welding or the like, but at present, a joining method by pawls is often used in terms of cost and work efficiency. When pawling the parts together, at least one of the parts is provided with a locking claw, and the other part is provided with a locking part with which the locking claw is engaged so that the two parts are engaged and fixed. ing.

On the other hand, the reuse of the lens-fitted film unit is being actively promoted at present. When the user takes the film unit with the lens containing the film already taken to the developing shop, these are further collected at the developing place, where the lid for taking out the film is opened and only the film is taken out, and the film is developed. Print processing is performed. After the film is taken out, the lens-fitted film unit is collected again by the manufacturer and once disassembled into parts for reuse. At the time of the disassembly, a jig for disassembly is hung on the tip of the locking claw to release the lock with the lock, thereby disconnecting the parts from each other.

[0004]

However, since the tip of the locking claw is inclined, it is difficult to disassemble the jig for disassembly and it is difficult to disassemble. As a result, the work efficiency of the disassembling work of the lens-fitted photo film unit has also deteriorated. The present invention has been made in consideration of the above problems of the prior art, and when disassembling the film unit with a lens,
An object of the present invention is to provide a lens-fitted film unit in which a disassembly jig can be easily applied to the locking claws.

[0005]

In order to achieve the above object, a disengagement fixing piece is integrally provided at the tip end side of an engaging claw for connecting parts of a lens-fitted photo film unit to disassemble the film. It is easy to put on.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. Film unit with lens 2 embodying the present invention
1 is composed of a front cover 3, a main body portion 4 and a rear cover 5, as shown in FIG. 1, and an unexposed film 6 is pulled out from the cartridge 7 between the main body portion 4 and the rear cover 5 to form a film roll 6a. Contains the formed one. Body part 4
Is further divided into a main body base 8 and an exposure unit 9,
The locking claw 10 and the locking portion provided on the exposure unit 9 are engaged with each other to be coupled. The cartridge 7 is accommodated in the cartridge chamber 11 of the main body 4 and the film roll 6a is accommodated in the film roll chamber 12, and the film 6 extended between them is properly adjusted by the film regulation surface 13 provided on the rear cover 5 on the back side. It is supported at the exposure position.

When photographing, first, the winding knob 14 provided on the upper portion of the cartridge chamber 11 is operated to perform shutter charging, and the shutter button 15 provided on the upper surface of the front cover 3 is pressed to provide the exposure unit 9. The shutter blade that opens is opened and closed. The photographing light flux of the subject enters through the exposure opening 16 formed in the front surface of the front cover 3 by opening and closing the shutter blades, passes through the exposure unit 9 and the exposure frame 17 provided in the main body base 8, and passes through the film 6. The surface is exposed. A film 6 that has been exposed to the photo after all frames have been taken up
A lid 18 is provided on the bottom surface of the rear cover 5 so as to be easily taken out from the cartridge chamber 11, and is fixed to the front cover 3 by a claw.

The main body 4 and the front cover 3 are provided with a guide member 20.
While being positioned, the locking claws 21a and 21b provided on the main body 4 and the locking portions provided on the front cover 3 are engaged with each other. Also, the main body 4 and the rear cover 5
Are locking claws 22a and 22b provided on the rear cover 5.
And the engaging portion provided on the main body portion 4 are coupled to each other. Further, the locking claw 23 provided in the upper left corner inside the rear cover 5 is adapted to engage with the locking hole 24 formed in the upper surface of the front cover 16, and the cartridge 7 and the film 6 are engaged. The main body portion 4 accommodating the is wrapped and coupled.

As shown in FIGS. 2 and 3 showing the engagement between the locking claw 23 and the locking hole 24, a flat portion 23a is formed on the tip side of the locking claw 23. Flat part 23
The a is formed so that the upper surface of the a is exposed from the opening of the locking hole 24 when the locking claw 23 and the locking hole 24 are locked. Therefore, the disassembling jig 25 can be made to enter from the locking hole 24 in the direction of arrow A in FIG. 3 and easily act on the flat portion 23a integrally formed with the locking claw 23. Further, as is well known, the locking claw 23 and the locking hole 24 are locked because the upright surface of the claw portion 23b of the locking claw 23 hangs on the edge of the locking hole 24. In order to release the locking of both, the locking claw 23 may be pushed down in the direction of arrow A to a position where the upright surface of the claw portion 23b is completely retracted from the edge of the locking hole 24.

The operation of the lens-fitted film unit 2 configured as described above will be described. The photographer operates the winding knob 14 and the shutter button 15 in the same manner as when photographing a normal film unit with a lens.
After shooting all the frames of the film, the film 6 in the patrone 7
Take it in and take it to a development store. At the developing shop, the lid 18 provided on the rear cover 5 is pry open with a screwdriver or the like to take out the cartridge 7 containing the exposed film 6. The photographer receives a desired print photograph, a negative film or the like from a photofinishing shop, and the manufacturer collects the lens-fitted film unit 2 after removing the exposed film 6.

The recovered film unit 2 with lens
Are disassembled into predetermined parts for reuse. According to the lens-fitted film unit 2 embodying the present invention, the flat portion 23a is provided on the tip end side of the locking claw 23 so that the jig 25 for disassembling the claw-stopped parts can easily be hooked.
Since it is integrally formed, the jig 25 is moved in the direction of arrow A in FIG.
With this, it is possible to easily press, and the locking between the locking claw 23 and the locking hole 24 can be efficiently released. The disassembled lens-fitted film unit 2 is further sent to the next process of reuse and used as a raw material for a new lens-fitted film unit.

In the embodiment described above, the flat portion 23a is formed on the tip end side of the locking claw 23 so that the disassembling jig 25 can be easily engaged. However, the flat portion 23a is formed depending on the shape of the jig 25. It is possible to provide a groove or a recess on the upper surface so that the jig 25 can be more easily hooked. Further, in the above-described embodiment, the locking claw 23 having the flat portion 23a is attached to the rear cover 5.
Although it was used only for the claw stoppers for connecting the front cover 3 and the front cover 3, the present invention can be applied to the claws for the other claw stoppers as long as the claw stoppers can use the disassembly jig 25. it can.

[0013]

As described above, according to the lens-fitted photo film unit of the present invention, the locking release pressing piece is integrally provided on the tip side of the locking pawl for joining the components of the lens-fitted film unit. Since the disassembling jig can be easily applied, the disassembling jig can be easily applied to the locking claw when disassembling the lens-fitted film unit. In addition, the disassembling jig is easily applied, and the disassembling work efficiency itself is improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a lens-fitted film unit embodying the present invention.

FIG. 2 is a perspective view of a main part of the lens-fitted film unit shown in FIG.

3 is a cross-sectional view of a main part of the lens-fitted film unit shown in FIG.

[Explanation of symbols]

 3 Front cover 4 Main body 5 Rear cover 6 Film 7 Patrone 14 Winding knob 15 Shutter button 18 Lid 23 Locking claw 23a Flat part 24 Locking hole 25 Jig

Claims (1)

[Claims] 1. A lens-fitted film unit for coupling a plurality of parts by engagement of locking claws, wherein a pressing piece for unlocking is integrally provided on the tip side of the locking claws. Film unit with lens.