JP2868665B2 - 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 a locking claw for connecting parts of a film unit with a lens.

[0002]

2. Description of the Related Art In order to easily take a photograph at any time, a film unit with a lens, "Photo Sharun" (product name), with a built-in film in the unit body incorporating a simple photographing mechanism is manufactured by the applicant. Sold and widely used. This film unit with lens
When this is roughly classified, for example, 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 photographing lens is fixed to the front surface. An unexposed film 14 with a patrone 14a is housed on the back surface of the main body 12 and is hermetically sealed by the rear cover 13. By fixing the front cover 10 to these front surfaces, the assembly of the film unit with the lens is completed.

In the method of fixing a plurality of parts,
Although there is a method of firmly fixing using an ultrasonic welding machine, a method of fixing with a removable claw is often used from the viewpoint of cost and work efficiency. For example, as shown in FIG. 5, the fixing claws 16 are integrally provided on both ends of the shutter cover 11, and the locking claws 16 are engaged with the main body base 12, as shown in FIG. 5. An engaged portion 18 is provided, and the hook surfaces 16a and 18a of the two are engaged with each other. As shown in FIG. 6, the front cover 10 and the main body base 12 are fixed to each other by hook surfaces 16a,
17a is performed by mutual engagement. Such hook surfaces 16a, 17a, 18a are always provided substantially parallel to the direction orthogonal to the mounting / detaching direction of the components.

By the way, from the background of resource reuse and the like, the reuse of lens-fitted film units has been actively promoted. That is, when the user brings the film unit with the lens containing the photographed film to the processing dealer, these are further collected in the development shop, where the film removal lid is opened and only the film is taken out. This is because the film unit with the lens after the film development and print processing have been performed and the film has been taken out has been disposed of as it is. Therefore, an attempt has been made to collect and reuse the film unit with the lens after the film is taken out again.

In consideration of such a background, it is necessary to disassemble the collected film unit with lens once for each part and to sort the material for each material. Upon disassembly, the components must be uncoupled. Conventionally,
Uncoupling of the parts is performed 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. 5 and 6, a mold for molding the hook surface 16a of the locking claw 16 is used. A jig for disassembly, for example, an elongated rod is pierced through the hole 20 in the direction of the arrow indicated by a dashed line in FIGS. 5 and 6, and the engagement is released by bending the locking claw 16. The connection between parts was cut off.

[0006]

However, in the above-described disassembling means, it is necessary to move the jig in the direction of the arrow indicated by the one-dot chain line in FIGS. 5 and 6, that is, to move the jig in at least two directions. Therefore, the disassembly work became difficult, and it could not be said to be a good work in terms of work efficiency. When removing the shutter cover 11 from the main body base 12, as shown in FIG. 5, the jig is inserted through the hole 20 in the mounting / detaching direction of the shutter cover 11 (vertical direction shown in FIG. 5), and then the locking pawl is inserted. 16 and the hook surface 16a and the locked portion 1
In many cases, when the hook 8 is bent more than the hook surface 18a, the hook 16 is bent more than necessary, and the hook 16 is often damaged. Therefore, such a shutter cover 11 cannot be reused as it is.

[0007] In consideration of automation of disassembly work,
In order to move the jig in two directions, a complicated mechanism is required, which is costly and requires high accuracy in terms of positioning, etc. to regulate the amount of jig inserted.
Further, there is a disadvantage that the cost is increased.

The present invention has been made in consideration of the above-mentioned problems of the prior art. The disassembling operation of a film unit with a lens can be performed safely and efficiently. It is an object of the present invention to provide a lens-fitted film unit having a fixing structure capable of safely disassembling the film unit.

[0009]

In order to achieve the above object, according to the present invention, a locking claw is provided in a hole formed in one part.
Extending from the back toward the other part, engaging with the locked claw and
A holding portion that is elastically deformable in the disengagement direction, and
From the hook to engage with the hooked surface.
And a claw with
Is inclined gradually higher from the side of the hole toward the hook surface.
Surface is provided, the slope of which is inserted straight through the hole
By receiving the pressing force from the tip of the rod-shaped jig,
Move the hook surface to the position where the engagement with the hooked surface is released.
The holding portion is elastically deformed so as to move .

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. On both ends of the shutter cover 11,
The locking claws 22 each having a hook surface 22a are integrally formed. Further, the hook base 22a is provided on the main body base 12.
Are provided with a hook surface 23a with which the shutter cover 11 is engaged.
Locked claw 23 for preventing movement in the attaching / detaching direction is integrally formed. The direction indicated by the dashed line arrow in FIG. 3 indicates the direction in which the shutter cover 11 is attached to the main body base 12.

The shutter cover 11 has a hole 25 at the base of the locking claw 22 at a position facing the hook surface 22a. The hole 25 is a die hole required for molding the hook surface 22a. The horizontal width of the hole 25 shown in FIG. 3 is equal to or longer than the horizontal width of the hook surface 22a, and is substantially the same as the hooking amount of the hook surfaces 22a and 23a.

A pressing portion 26 is integrally formed on the hook surface 22a. The pressing portion 26 has one surface 26a connected to the center of the hook surface 22a.
A slope 26b is provided which is inclined from the vertex 22b of a to the direction of the hole 25. The slope 26b is pressed by a jig or the like. The jig is inserted through the hole 25 in parallel with the direction of the arrow indicated by the dashed line in FIG. 3. When the jig is inserted, the pressing portion 26 releases the locking claw 22 and its hook surface 22 a is disengaged from the locked claw 23. Bend and bias in the direction.

The latched claw 23 has a notch 23b at the center.
When the locking claw 22 is engaged with the locked portion 23, the pressing portion 26 fits into the notch 23b. Thereby, the shutter cover 11 and the main body base 12
Is connected to the hook surfaces 22a on both sides of the pressing portion 26.
Performed by the engagement between the hook surface 23a of the engaging portion 23 and. In this embodiment, as shown in FIG. 3, the locked claw 23 is provided on the edge inside the opening 27 provided in the main body base 12, but the position where the locked part 23 is provided is set at the end of the main body base 12. It may be on the side.

The operation of the thus-configured film unit with lens will be described. After the photographer operates the wind-up knob and the shutter button to complete the photographing of all the frames of the unexposed film 14 in the same manner as the usual photographing of the film unit with a lens, after the photographed film is completely wound into the cartridge 14a. Submit to a processing agency. At a developing dealer, the pull-top type lid 13a (see FIG. 4) provided on the rear cover 13 is pryed open with a driver 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 film unit with the lens from which the film is taken out is collected by the manufacturer.

The recovered film unit with lens is first conveyed to a disassembling step which is an automated line. In the disassembly step, for example, in the step of removing the shutter cover 11 from the main body base 12, as shown in FIG. 1, the disassembly apparatus having the bar 30 with a rounded tip automatically disassembles. Two bars 30 are provided, and the interval between them is the same as the interval between the holes 25 provided in the shutter cover 11. The rods 30 are movable along the direction in which the shutter cover 11 is attached and detached. The diameter of the rods 30 is the same as the width of the hole 25 (the horizontal width shown in FIG. 3), that is, the hook surface. 22a and locked part 23
Are formed substantially the same length as the depth a of the hooked surface 23 a of.

When such a disassembly device is operated, first, the rod 30 penetrating the hole 25 is pressed from the tip thereof into the pressing portion 26.
Abuts the slope 26b. Thereafter, as the insertion of the rod 30 is continued, the pressing portion 26 presses and bends the locking claw 22 in a direction in which the hook surface 22 a is disengaged from the locked portion 23. At this time, the rod 30 is urged in the direction opposite to the direction in which the locking claw 22 bends due to the elasticity of the locking claw 22 itself, but the diameter of the rod 30 is substantially the same as the width of the hole 25. Because of this, the rod 30 is restricted by the edge of the hole 25, and is inserted in a straight state without moving in the biasing direction or being pushed and bent from the tip.

After that, when the rod 30 is inserted to a position where the circumferential surface having the maximum diameter of the rod 30 and the inclined surface 26b come into contact with each other, the amount of bending of the locking claw 22 becomes smaller than the hook surface 22a,
This is substantially the same as the hooking amount with the hooked surface 23a, and the shutter cover 11 can be easily removed.
At this time, since the direction in which the shutter cover 11 is removed is the same as the direction in which the bar 30 is pulled out, the shutter cover 11 can be removed with the bar 30 inserted. Further, when the shutter cover 11 is removed, it is possible to remove the shutter cover 11 only by simultaneously pulling out the rod 30 without holding the shutter cover 11. This is because the shutter cover 11 moves with the movement of the rods 30 because the two rods 30 are urged by the elasticity of the locking claws 22 from both sides thereof. Thereby, when the disassembling device is considered, the cost can be reduced without complicating the mechanism.

Further, regardless of the insertion of the rod 30, the locking claw 22 is not bent more than the hook amount between the hook surface 22a and the hooked surface 23a, so that the locking claw 22 is damaged.
In addition, the shutter cover 11 can be used repeatedly without being damaged, and the shutter cover 11 can be safely removed.
In addition, since high precision is not required for positioning related to the insertion of the rod 30, the cost can be reduced when a disassembling device is considered.

The locking claw 2 of the above-described embodiment described above.
2, the apex 22b of the hook surface 22a and the pressing portion 2
Although the top of the hook 6 has the same height, the present invention is not limited to this, and the top of the pressing portion 26 may be higher than the top 22b of the hook surface 22a. Further, in the above embodiment, the shape is such that the vertex 22a of the hook surface 22a and the vertex of the pressing portion 26 are at the same position with respect to the insertion direction of the rod 30, but the present invention is not limited to this, and the hook surface 22a The shape may be such that the apex of the pressing portion 26 is closer to the hole 25 than the apex 22b. According to this, the unlocking can be performed by reducing the insertion amount of the rod 30 of the disassembling device.

In the above-described locking claw 22 of the above embodiment, the hook surfaces 22a are provided on both sides of the pressing portion 26. On the other hand, on both sides of the hook surface 22a. The shape provided with the pressing part 26 may be sufficient. In this case, the locked claw 2 is located at a position corresponding to the hook surface 22a.
3 I place provided the hook surface 23a. Further, in the above-described embodiment, only the locking of the main body base 12 and the shutter cover 11 has been described. However, the present invention does not limit the parts, and the parts used in the lens-fitted film unit are not limited. May be used in any case.

[0021]

As described above, according to the film unit with the lens of the present invention, the film unit is inserted straight through the hole.
By receiving the pressing force from the tip of the rod-shaped jig, the hook
Surface moves to a position where it disengages from the hooked surface
The holding part is provided with a slope that elastically deforms the holding part
Then, just insert the jig straight through the hole,
The hook surface can be removed from the hooked surface. This allows
The efficiency of the disassembling operation can be improved, and automation can be achieved at low cost.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view of a main part showing a state in which components are removed using a jig or the like.

FIG. 2 is a sectional view of a main part showing a fixed state of components.

FIG. 3 is a perspective view showing a main part of the present invention.

FIG. 4 is an exploded perspective view illustrating a configuration of a film unit with a lens described in the related art.

FIG. 5 is a sectional view of a main part showing a fixed state of one component described in the prior art.

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

[Explanation of symbols]

 12 Main body base 16, 17, 22 Locking claw 16a, 17a, 18a, 22a 23a, hook surface 18, 23 Locked portion 20, 25 Hole 26 Pressing portion 26a Slope

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) G03C 3/00 575 G03C 3/00 590 G03C 17/04

Claims (1)

(57) [Claims] 1. A part locked on the back side of one part located on the front side
The claw is integrally molded and the other part located on the back side is
The locked claws with hooked surfaces are integrally formed and these are
The other and the other part
In the film unit with the lens connected, the locking claw is inserted into the other part through a hole formed in one part.
Engagement with the locked claw extending toward the other part
A holding part that is elastically deformable in the release direction, and a front part from this holding part
Protruding toward the locked claw and engaging with the hooked surface
And a claw having a hook surface.
In the holding part, gradually from the hole side to the hook surface
A slope is provided which rises through the hole.
Pressing force from the tip of a rod-shaped jig inserted straight
Receiving, the hook surface is engaged with the hooked surface.
The holder is elastically deformed so that it moves to the release position.
A film unit with a lens characterized by being shaped .