JP2818714B2 - 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 A film unit with a built-in lens "Sharprun" (product name) with a built-in film in the unit body incorporating a simple photographing mechanism is manufactured by the applicant so that photographing can be easily performed at any time. 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. 4, the locking 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. 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. 5, 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 removing the front cover 10 from the main body base 12, as shown in FIGS. 4 and 5, 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 inserted through the hole 20 in the direction of the arrow indicated by the dashed line in FIGS. 4 and 5, and the engagement is released by bending the locking claw 16. The connection between parts was cut off.

[0006]

However, in the above-mentioned disassembling means, it is necessary to insert the jig in the direction of the arrow indicated by the dashed line in FIGS. 4 and 5, that is, in at least two directions. Therefore, disassembly work becomes difficult,
The work was not good in terms of work efficiency. Also,
In order to remove the shutter cover 11 from the main body base 12, as shown in FIG. 4, the jig is inserted through the hole 20 in the attaching / detaching direction of the shutter cover 11 (vertical direction shown in FIG. 4), and then the locking claw 16 is moved. 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 the 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, a hook surface provided on a locking claw, a hole provided at a position facing the hook surface at the base of the locking claw, A pressing portion provided integrally with the pawl and having a surface inclined in a direction closing the hole from the hole toward the hook surface; and a hooked portion of the locked portion provided between the hook surface and the pressing portion. The surface is constituted by a relief portion for engaging with the hook surface, and the hook surface and the hooked surface are formed by pressing the pressing portion with a rod-shaped jig inserted from the hole to bend the locking claw. Is disengaged.

[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. The main body 12 has a hook surface 23a with which the hook surface 22a is engaged, and a locked portion 23 for preventing the shutter cover 11 from moving in the attaching / detaching direction is integrally formed. The direction indicated by arrow A in FIG. 2 indicates the direction in which the shutter cover 11 is attached to and detached from 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. A pressing portion 26 having a surface 26a inclined from the hole 25 toward the hook surface 22a in a direction to close the hole 25.
Are integrally formed with the locking claw 22. The locked portion 23 enters between the pressing portion 26 and the hook surface 22a,
An escape portion 27 for engaging the hook surface 23a with the hook surface 22a is provided integrally with the locking claw 22.

As shown in FIG. 3, when the horizontal distance from the vertex 26b of the pressing portion 26 to the vertex 22b of the hook surface 22a is c, 0 ≦ c <a
Is formed in a shape that satisfies the following relational expression. Note that FIG.
“A” shown in FIG. 3 indicates the length of the hook surface 22a hooked on the hook surface 23a. Further, the hole 25 may be shared with a mold punching hole required for molding the pressing portion 26 with a mold.
In this case, whether the horizontal width of the hole 25 shown in FIG. 3 is substantially the same as the horizontal length up to the vertex 26b of the pressing portion 26,
Or it may be more.

The slope 26b of the pressing portion 26 is pressed by a jig or the like. This jig is inserted through the hole 25 in parallel with the direction of arrow A shown in FIG. 2, and when inserted, the pressing portion 26 releases the locking claw 22 in the direction in which the hook surface 22 a is released from the hook surface 23 a. Fold it toward you. In addition,
The jig is preferably, for example, an elongated rod 30 shown in FIG.
The rod 30 is connected to the hook surface 22a and the hook surface 2 shown in FIG.
What is necessary is just to form with the diameter more than hook length a with 3a.
Furthermore, when the rod 30 is inserted, if its contour is inserted along the edge 25a of the hole 25, the rod 30 can be inserted smoothly without bending. In this case, stick 30
May be formed with a diameter equal to or more than the length a + b shown in FIG.

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. These rods 30 are movable along the direction in which the shutter cover 11 is attached and detached.

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 26a. 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 22a is disengaged from the hook surface 23a. At this time, the rod 30 is urged in a 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 equal to or more than the length a + b shown in FIG. If the contour of the rod 30 is inserted along the edge 25a of the hole 25, the tip of the rod 30 will not be bent.

Thereafter, the rod 30 is moved to the hook surfaces 22a, 23.
The shutter cover 11 can be removed by bending the locking claw 22 to a position where the hooking with the hook a is released. At this time, since the interval c shown in FIG. 3 is not less than 0 and not more than a, the lock can be released with less insertion of the rod 30.

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 is not limited to the parts, and may be used in a film unit with a lens. Any of the components may be used for locking.

[0019]

As described above, according to the film unit with the lens of the present invention, since the pressing portion having the surface inclined in the direction of closing the hole from the hole toward the hook surface is provided integrally with the locking claw, By simply inserting a bar-shaped jig straight from the hole, the locking claw can be bent, 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 a component.

FIG. 3 is a sectional 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 25 Hole 26 Pressing portion 26a Slope 27 Escape portion

Claims (1)

(57) [Claims] 1. A film unit with a lens for connecting each component by engagement between a locking claw and a locked portion, wherein a hook surface provided on the locking claw and the hook at a base of the locking claw are provided. A hole provided at a position facing the surface, a pressing portion provided integrally with the locking claw, and having a surface inclined in a direction to close the hole from the hole toward the hook surface; and a hook surface and the pressing portion. And a relief portion for engaging the hooked surface of the locked portion with the hook surface, and pressing the pressing portion with a rod-shaped jig inserted from the hole. A film unit with a lens, wherein the engagement between the hook surface and the hooked surface is released by bending the pawl.