JP2868667B2 - 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. 6, the locking claws 16 are integrally provided at both ends of the shutter cover 11, and the locking claws 16 are engaged with the main body base 12. An engaged portion 18 is provided, and the hook surfaces 16a and 18a of the two 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 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. 6 and 7, 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 an arrow indicated by a dashed line in FIGS. 6 and 7, 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 insert the jig in the direction of the arrow indicated by the one-dot chain line in FIGS. 6 and 7, that is, in at least two directions. Therefore, disassembly work becomes difficult,
The work was not good in terms of work efficiency. Also,
When removing the shutter cover 11 from the main body 12, the jig is inserted through the hole 20 in the mounting / removing direction of the shutter cover 11 (vertical direction shown in FIG. 6) as shown in FIG. The hook surface 16a and the locked portion 1
When the hook 8 is disengaged from the hook surface 18a.
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.

[0007] In consideration of automation of disassembly work,
In order to insert the jig in two directions, a complicated mechanism is required, and there is a disadvantage that the cost is high.

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 with a hole formed in one part.
With a hook surface facing this hole at the back of the
Extend the claw from the other part toward the hole and
A holding portion that is elastically deformable in the engagement and disengagement directions;
Projecting from the holding portion toward the locking claw,
And a claw having a hooked surface to be engaged. Soshi
And a bar inserted straight through the hole at the tip of the claw
By receiving the pressing force from the tip of the jig,
The hook surface to the position where it disengages from the hook surface.
The holding part is inclined so as to be elastically deformed.
A surface is formed .

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One 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 (vertical direction shown in FIG. 3)
The hook 23 is formed so that the hook 23 can be bent to a position where the engagement between the hooked surface 23a and the hook surface 22a is released in the hole 25. A locking claw 22 is provided to protrude from an edge 25 a of the hole 25 in the direction of attaching and detaching the front cover 10. The mounting / removing direction of the front cover 10 is a direction indicated by an arrow A in FIG. The hook 22 has a hook surface 22 a at a position facing the hole 25. In addition,
The hole 25 may be a die hole required for molding the locking claw 22 in a mold.

A locked portion 23 is formed integrally with the main body 12. The locked portion 23 includes a holding portion 23b and a locked portion.
And a claw having a hook surface 23a. nail
The portion includes a hooked surface 23a and a holding portion 23b. Security
The holding portion 23b extends toward the hole 25 and is
It is elastically deformable in the engaging and disengaging directions. The hooked surface 23a is engaged with the hook surface 22a, and
2 prevents the front cover 10 from moving in the attaching / detaching direction.
At the tip of the claw portion, a slope 23c is provided which is inclined between the top of the hooked surface 23a and the inside of the hole 25 . This slope 23c has a rod-like shape inserted straight through the hole 25.
By receiving the pressing force from the tip of the jig, the hooked
Surface 23a to a position where engagement with hook surface 22a is released.
The holder 23b is elastically deformed so as to move .

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 inserted into the hole 25, rather than the length B at which the hook surface 22a is hooked on the hooked surface 23a. A is formed to be long. For this reason, the length 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 inclined surface 23c is smaller than the length F of the holding portion 23b. 10
It is sufficient if the angle is about 35 ° with respect to the mounting / removing direction. In addition,
The length C shown in FIG. 3 corresponds to the top of the slope 23c and the slope.
Along the direction perpendicular to the attaching / detaching direction between
The length is shown. The length D shown in FIG.
Attaching / detaching direction between edge 25a of hole 25 and apex of slope 23c
And the length along the direction orthogonal to.

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. When the jig is inserted, the locked claw 23 is engaged with the hooked surface 23 a and the hook surface 22 a in the hole 25. Bend to the position where is released. The jig is preferably, for example, an elongated rod 30 as shown in FIG. 1. Further, when the rod 30 is inserted, if its contour is inserted along the edge 25 a of the hole 25, the tip of the rod 30 is Can be inserted smoothly without bending. Therefore, the diameter of the rod 30 is
The slope 23c that has entered the hole 25 from the edge 25a of the hole 25 for a hook length B or more between the hook 2a and the hooked surface 23a.
If it is formed to have a length equal to or less than the length A to the end of the lock, the lock can be reliably released.

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 process, for example, in the process of removing the front cover 10 from the main body base 12, as shown in FIG. 1, the disassembly device having a rod 30 with a rounded tip is automatically disassembled. Two bars 30 are provided, and the interval between them is the same as the interval between the holes 25 provided in the front cover 10 (see FIG. 4). These rods 30 are movable along the direction in which the front cover 10 is attached and detached.

When such a disassembly device is operated, first, the rod 30 penetrating the hole 25 is moved from the tip to the slope 23c.
Abut. Thereafter, as the insertion of the rod 30 is continued, the hooked surface 23a of the locked claw 23 is changed to the hook surface 22a.
The claw 23 is pushed and bent in a direction in which it is disengaged from the hook . At this time, the rod 30 is hooked surface 23a by the elasticity of Hikakaritometsume 23 itself is urged toward the opposite direction to the direction deviating 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 tip of the rod 30 does not bend.

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

In the above embodiment, the locked claw 23 is provided with the slope 23c 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 formed into a linear surface and the slope 40 a is formed at the tip of the jig 40 may be used.

In the above-described embodiment, only the locking of the main body base portion 12 and the shutter cover 11 has been described. However, in the present invention, the present invention can be used in a film unit with a lens without limiting the parts. Any of the components may be used for locking.

[0020]

As described above, according to the film unit with the lens of the present invention , the hole is formed through the hole at the tip of the claw.
Receives pressing force from the tip of the immediately inserted rod-shaped jig.
By doing so, the hooked surface is disengaged from the hook surface
The slope that elastically deforms the holding part so that it moves to the position
Since it is provided, just insert the jig straight into the hole,
The holding part is elastically deformed until the hook surface comes off the hook surface.
Ru can be form. Thereby, the efficiency of the disassembling operation can be improved, and automation can be performed 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 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 illustrating a configuration of a film unit with a lens described in the related art.

FIG. 6 is a sectional view of a main part showing a fixed state of one component described in the prior art.

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Front cover 12 Main body base 16, 17, 22 Locking claw 16a, 17a, 18a, 22a 23a, hook surface 18, 23 Locked portion 23c Slope 25 hole 25a edge 39 surface

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) G03C 3/00 570 G03C 3/00 590 G03B 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 are integrally formed and these claws are engaged with each other.
By connecting the one and the other parts
In the case of a film unit with a hook , the locking claw is located in a hole formed in one of the parts.
And the hooked claw faces the other part.
Extending from the article toward the hole, engaging with the locking claw and engaging
A holding part that is elastically deformable in the release direction
A member that projects toward the locking claw and engages with the hook surface
And a claw having a hook surface.
At the tip of the rod is a bar that is inserted straight through the hole
By receiving the pressing force from the tip of the jig,
The hook surface moves to the position where it disengages from the hook surface
Slope so as to elastically deform the holding part
A film unit with a lens, characterized in that a film is formed .