JPH05303174A - Film unit with lens - Google Patents

Abstract

PURPOSE:To obtain fixing structure that disassembling work can be safely and efficiently executed. CONSTITUTION:A hole 25 is formed on one of respective parts. A catch 22 provided with a hook surface 22a at a position faced to the edge 25a of the hole 25 is formed on the edge 25a. Besides, a part to be caught 23 provided with a surface to be hooked 23a engaged with the surface 22a is provided on the other parts. An inclined surface 23c provided by being inclined between the peak of the surface 23a and the inside of the hole 25 is integrally provided on the part to be caught 23. The surface 23c is formed so that length between the edge 25a and the tip of the surface 23c becomes longer than the length where the surface 22a is engaged with the surface 23a. Besides, the part to be caught 23 is pressed by a bar 30 inserted in a loading and unloading direction along the edge 25a so as to be bent to a position where the engagement of the surfaces 22a and 23a is released in the hole 25.

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 "Sharprun" (trade name) manufactured by the applicant of the present invention, which has a built-in film in advance, has a built-in film unit so that a photograph can be taken easily at any time. Sold and widely used. This film unit with lens
This is roughly divided into, for example, the front cover 1 as shown in FIG.
0, a shutter cover 11, a main body base 12, and a rear cover 13. A shutter device, a film winding mechanism, and the like are incorporated in the main body base 12,
A shutter cover 11 incorporating a taking lens is fixed to the front surface. An unexposed film 14 with a cartridge 14a is housed on the back surface of the main body base 12 and is hermetically sealed by a rear cover 13. Then, by assembling the front cover 10 to these front surfaces, the assembly of the lens-fitted film unit is completed.

In the method of fixing these plural parts,
There is also a method of firmly fixing using an ultrasonic welding machine, but in terms of cost and work efficiency, a fixing method using a removable claw stopper is often used. For example, as shown in FIG. 6, the fixing of the main body base 12 and the shutter cover 11 is integrally provided with the locking claws 16 on both end sides of the shutter cover 11, and the main body base 12 is engaged with the locking claws 16. The mating locked portion 18 is provided, and the hook surfaces 16a, 18a of both are engaged with each other. Further, as shown in FIG. 7, the front cover 10 and the main body base 12 are fixed to each other by hooking the hook surfaces 16a of the locking claws 16 and 17 integrally provided on the front cover 10 and the main body base 12, respectively.
17a It is performed by the engagement of each other. Such hook surfaces 16a, 17a, 18a are always provided substantially parallel to the orthogonal direction to the attachment / detachment direction of the component.

By the way, from the background of resource reuse and the like, the reuse of the lens-fitted film unit is being actively promoted. This is because when a user takes a film unit with a lens that contains a film that has already been taken to a photofinishing shop, these are further collected at the photo lab, where the lid for taking out the film is opened and only the film is taken out. This is because the lens-fitted film unit after the film has been taken out after being subjected to film development and print processing has been taken out. Therefore, an attempt has been made by the manufacturer to collect and reuse the lens-fitted film unit after taking out the film.

In consideration of such a background, it is necessary to disassemble the recovered lens-fitted photo film unit for each component once and sort it by material. When disassembling it, the components must be uncoupled. Conventionally,
The uncoupling of each component is done manually. For example, when removing the shutter cover 11 from the main body base 12 and the front cover 10 from the main body base 12, as shown in FIGS. 6 and 7, for a mold for molding the hook surface 16a of the locking claw 16. A jig for disassembly, for example, a slender rod is pushed through the hole 20 in the direction of the arrow shown by the alternate long and short dash line in FIGS. 6 and 7, and the engaging claw 16 is bent to release these engagements. The connection between parts was separated.

[0006]

However, in the disassembling means described above, it is necessary to insert the jig in the direction of the arrow shown by the one-dot chain line in FIGS. 6 and 7, that is, in at least two directions. Therefore, disassembly work becomes difficult,
It was not good work in terms of work efficiency. Also,
When removing the shutter cover 11 from the main body base 12, as shown in FIG. 6, after inserting the jig through the hole 20 in the attaching / detaching direction of the shutter cover 11 (vertical direction shown in FIG. 6), the locking claw 16 is removed. The hook surface 16a and the locked portion 1
When the engagement with the hook surface 18a of 8 is released, the locking claw 1
6 was bent more than necessary, and the locking claw 16 was often damaged. Therefore, such a shutter cover 11 cannot be reused as it is.

Further, in consideration of automation of disassembly work,
A complicated mechanism is required to insert the jig in two directions, which is a costly drawback.

The present invention has been made in consideration of the above problems of the prior art. The disassembling work of the lens-fitted photo film unit can be carried out safely and efficiently, and in consideration of automation, the cost is low and each component is An object of the present invention is to provide a lens-fitted film unit having a fixing structure that can be safely disassembled.

[0009]

In order to achieve the above object, a hole is formed in any one of the parts, and a hole is formed from the edge of the hole in the attaching / detaching direction of the part. An engaging claw having a hook surface at a position facing the hook, an engaged claw provided on the other side of the component and having a hooked surface hooked on the hook surface, and the engaged claw provided on the engaged claw. A slope provided between the apex of the surface and the inside of the hole, wherein the slope is longer than the length at which the hook surface is hooked on the hooked surface from the edge of the hole to the tip of the slope entering the hole. Is formed so that the hook surface and the hook surface are engaged with each other in the hole by pressing the inclined surface with a rod-shaped jig inserted along the edge of the hole. Bending to the release position releases the connection of each component It is intended to be. It should be noted that instead of providing the slanted surface on the locked claw, the slanting surface may be provided on the tip of the jig.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. A hole 25 is provided in the front cover 10. The width of this hole 25 (the vertical direction shown in FIG. 3) is
It is formed so that the locked claw 23 can be bent to a position where the engagement between the hooked surface 23a and the hooked surface 22a is released in the hole 25. A locking claw 22 is provided so as to project from the edge 25 a of the hole 25 in the attaching / detaching direction of the front cover 10. The attachment / detachment direction of the front cover 10 is the direction indicated by the arrow A in FIG. The locking claw 22 is provided with a hook surface 22 a at a position facing the hole 25. In addition,
The hole 25 may be a die hole necessary for die-molding the locking claw 22.

A locked portion 23 is integrally molded with the main body base portion 12. The locked portion 23 includes a hooked surface 23a that engages with the hook surface 22a, an elastic holding portion 23b that holds the hooked surface 23a, and an inclined surface 23c that is inclined between the apex of the hook surface 23a and the hole 25. It consists of and.
The hook surface 23a prevents the front cover 10 from moving in the attachment / detachment direction with respect to the main body base 12 by being engaged with the hook surface 22a.

As shown in FIG. 3, the slope 23c has a length from the edge 25a of the hole 25 to the tip of the slope 23c that has entered the hole 25, rather than the length B at which the hook surface 22a is caught on the hooked surface 23a. A is formed to be long. Therefore, in the locked claw 23, the length E of the flat portion 23d at the tip of the locked claw 23 is shorter than the length F of the holding portion 23b, and the angle θ of the slope 23c is the front cover. 10
About 35 ° with respect to the attachment / detachment direction is sufficient.

The slope 23d is pressed by a jig or the like. The jig is inserted through the hole 25 in parallel with the direction of arrow A shown in FIG. 2, and when inserted, the locked claw 23 engages the hooked surface 23a and the hooked surface 22a within the hole 25. Bend to the position where is released. Note that the jig is preferably, for example, an elongated rod 30 as shown in FIG. 1, and when the rod 30 is inserted, the tip of the rod 30 can be obtained by inserting its contour along the edge 25a of the hole 25. Can be inserted smoothly without bending. Therefore, the diameter of the rod 30 should be the hook surface 2
2a and the hooked surface 23a are caught by a length B or more, and the slope 23c enters the hole 25 from the edge 25a of the hole 25.
If it is formed to have a length equal to or less than the length A up to the tip, the locking can be reliably released.

The operation of the lens-fitted film unit constructed as described above will be described. After the photographer operates the winding knob and the shutter button to finish photographing all the frames of the unexposed film 14 as in the case of photographing a film unit with a lens, after the photographed film is completely wound into the film cartridge 14a. Submit to a development store. At a developing shop, the pull-top type lid 13a (see FIG. 4) provided on the rear cover 13 is pry open with a screwdriver or the like, and the cartridge 14a containing the photographed film is taken out. The photographer receives the print photograph, the negative film, and the like from the developing dealer, and the lens-equipped film unit from which the film is taken out is collected by the manufacturer.

The recovered lens-fitted film unit is first conveyed to the disassembling process, which is an automated line. In the disassembling process, for example, in the process of removing the front cover 10 from the main body base 12, the disassembling device including the rod 30 having a rounded tip as shown in FIG. Two rods 30 are provided, and the distance between them is the same as the distance between the holes 25 provided in the front cover 10 (see FIG. 4). Further, these rods 30 are movable along the attachment / detachment direction of the front cover 10.

When such a disassembling apparatus is operated, first, the rod 30 penetrating the hole 25 is inclined from the tip thereof to the slope 23c.
Abut. After that, as the insertion of the rod 30 is continued, the hook surface 23a of the locked claw 23 is changed to the hook surface 22a.
It is pushed and bent in a direction away from a. At this time,
The rod 30 has a hook surface 23 due to the elasticity of the locked claw 23 itself.
Although a is biased in the direction opposite to the direction in which it disengages from the hook surface 22a, as shown in FIG. 1, since the outline of the rod 30 is inserted along the edge 25a of the hole 25, the rod 30 The tip of is not bent.

After that, the claw 2 to be locked reaches the position where the rod 30 releases the engagement between the hook surface 22a and the hooked surface 23a.
By bending 3 the front cover 10 can be removed. In addition, in this embodiment, since the inclination angle of the inclined surface 23c is about 35 ° with respect to the attaching / detaching direction of the front cover 10, the pressing force for inserting the rod 30 is not required so much, and the locked claw 23 can be bent safely. While being able to
It will not be damaged or damaged even if it is repeatedly bent.

In the above embodiment, the locked claw 23 is provided with the slope 23c which is pressed by the rod 30.
The present invention is not limited to this, and as shown in FIG.
An example in which the surface 39 pressed by is a linear surface and the slope 40a is formed at the tip of the jig 40 may be used.

In the above-described embodiment, only the engagement between the main body base portion 12 and the shutter cover 11 has been described, but the present invention is not limited to the parts and is used in the lens-fitted film unit. Any component may be used as long as the components are locked together.

[0020]

As described above, according to the lens-fitted film unit of the present invention, the length from the edge of the hole to the tip of the sloped surface entering the hole is longer than the length at which the hook surface is caught on the hooked surface. Since the slope of the locked part is formed so that the locking claw can be bent simply by inserting a rod-shaped jig straight from the hole, disassembly work efficiency can be improved and automation at low cost can be achieved. You can take action. On the contrary, the same effect can be obtained by providing a lock releasing slope on the tip of the jig.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of essential parts showing a state in which components are removed using a jig or the like.

FIG. 2 is a cross-sectional view of essential parts showing a fixed state of parts.

FIG. 3 is a cross-sectional view showing a main part of the present invention.

FIG. 4 is a sectional view showing a main part according to another embodiment of the present invention.

FIG. 5 is an exploded perspective view showing a configuration of a lens-fitted film unit described in the related art.

FIG. 6 is a cross-sectional view of an essential part showing a fixed state of one component described in the related art.

FIG. 7 is a cross-sectional view of essential parts showing a fixed state of another component described in the related art.

[Explanation of symbols]

 10 Front Cover 12 Main Body Base 16, 17, 22 Locking Claws 16a, 17a, 18a, 22a 23a, Hook Surface 18, 23 Locked Part 23c Slope 25 Hole 25a Edge 39 Surface

Claims (2)

[Claims] 1. In a lens-fitted film unit in which parts are joined together, a hole is formed in any one of the parts, and is formed from the edge of the hole in the attachment / detachment direction of the parts. A locking claw having a hook surface at a position facing the hole, a locked claw provided on the other side of the component and having a hooked surface hooked on the hook surface, and the locked claw provided on the locked claw. A slope provided between the apex of the hooked surface and the inside of the hole, wherein the slope is from the edge of the hole to the tip of the sloped surface of the hole rather than the length at which the hook surface is hooked on the hooked surface. Is formed so as to have a long length, and the slanted surface is pressed by a rod-shaped jig inserted along the edge of the hole, and the locked claw engages the hook surface with the hooked surface in the hole. By bending to the position where A film unit with a lens, in which the parts are uncoupled. 2. A lens-fitted film unit in which parts are joined together, wherein a hole is formed in any one of the parts, and a hole is formed from an edge of the hole in a mounting / removing direction of the parts. A locking claw having a hook surface at a position facing the hole, a locked claw provided on the other side of the component and having a hooked surface hooked on the hook surface, and the locked claw provided on the locked claw. A surface linearly provided between the apex of the hooked surface and the inside of the hole, wherein the surface is from the edge of the hole to the tip of the inclined surface that has entered the hole, rather than the length at which the hook surface is hooked on the hooked surface. By inserting a jig having a slanted surface at the tip along the edge of the hole, the slanted surface of the jig presses the surface, and Disengagement of the hook surface and the hooked surface in the hole The lens-fitted film unit is characterized in that the coupling of the respective parts is released by bending it to the position where