JP3308319B2 - Film unit with film patrone and 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 film cartridge incorporating a cover member for opening and closing a film passage, and a film unit with a lens using the film cartridge.

[0002]

2. Description of the Related Art A conventional 135-film patrone has a patrone main body composed of a body and a cap made of a thin metal plate, and a film is wound around a resin spool in the patrone main body. Further, a flocked cloth called "telemp" is attached to the film entrance formed in the patrone main body, so as to shield the inside of the patrone main body.

[0003] In recent years, the reuse of parts and raw materials has been active in various manufacturing fields, but the above-mentioned film patrone cannot be said to have good recyclability. This is because conventional film patrones are composed of various materials, so even if these are reused as raw materials, they must be once decomposed and separated for each material, thereby avoiding a drop in productivity. I couldn't. From such a viewpoint, the patrone body is also made of resin like the spool,
Further, a film patrone has been proposed which also incorporates a resin-made lid member for shielding light from the film entrance and exit.
According to this, after the photographed film is taken out, the patrone body can be melted and pelletized together with the spool, and it is possible to efficiently reuse the raw material.

On the other hand, a film unit with a lens in which a film cartridge is incorporated in a unit main body at the time of manufacturing so that a user can easily take a photograph simply by performing a photographing operation is widely used. In a film unit with a lens, a film that has been photographed is wound around the cartridge body by a film winding operation after photographing. Then, the used film unit with the lens is collected as it is in the developing laboratory. At the photo lab, the patrone with the film that has been photographed is taken out of the film unit with the lens.However, with the conventional patrone, the film entrance and exit are shielded from light by telemping, so the patrone can be taken out in the light room. .

[0005]

However, in order to improve the reusability as described above, the patrone body is made of resin, and the film patrone is opened and closed with a lid member. If the film cartridge is taken out from the film unit, the external light will enter through the film entrance and be caught in the cartridge body if the lid is not securely closed when removing the film cartridge from the film unit with the lens. The exposed film is exposed to external light. Of course, there is no problem if the unloading operation is performed in a dark room. However, considering that a large number of film units with lenses are used, the increase in the number of dark room operations is a major problem in terms of work efficiency.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and when taking out a patrone containing a photographed film from a film unit with a lens, the lid member is securely closed without using a complicated interlocking mechanism. It is an object of the present invention to provide a film patrone and a film unit with a lens which are moved to the same position.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention incorporates a lid member rotatable between a closed position for blocking a film passage and an open position for opening a film passage into a cartridge body. With one end of this lid member
The rotation direction of the lid member and the film patrol
A spiral groove is formed along the axial direction from which the thread is extracted
And take out the photographed film patone from the axial direction
Engagement pin provided on the film unit with lens
Is engaged with the spiral groove to close the lid member to the closed position.
Is rotated .

[0008] A film unit with a lens
To reduce costs, close the patrone body lid.
Omit the function to move from the
Function and the patrone main unit when taking out
Closing function to move the lid member from the open position to the closed position
It is advantageous to have only In addition, a lens
In order to increase the production efficiency of the
Put the main unit and the film roll in the patrone room,
When loading the film unit,
Before installing the cover after loading, load from the back side
Good. And when taking out the patrone after shooting
The film with lens without removing the rear cover
Open the bottom cover of the unit and move the patrone body in its axial direction.
You can just take it out of it. Note that a lid with a lid
Use resin molded products for each component that makes up the Throne body.
Can be

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, which shows an example of each component constituting a main body (unit main body) of a film unit with a lens using the present invention and a film cartridge used by being loaded on the main body, a unit main body 2 is formed by resin molding. And a front cover 4 and a rear cover 5 which cover the front and rear surfaces of the main body 3. The main body 3 incorporates a shutter mechanism including shutter blades, a film winding mechanism, and the like. The front cover 4 covers a shutter mechanism or the like assembled to the main body base 3, and the rear cover 5 has a function of covering the rear side of the main body base 3 light-tightly and contacting the rear surface of the film to hold the film on the exposure surface. .

The rear cover 5 is integrally provided with a bottom plate 6 for covering the bottom surface of the main body base 3. A notch 6a is formed at one end side to expose the bottom surface of the patrone chamber 8 provided in the main body base 3. are doing. A bottom cover 5a that covers the notch 6a is formed integrally with the rear cover 5 and can be opened and closed via a thin hinge portion. Normally, the bottom lid 5a covers the notch 6a, and the patrone chamber 8 is kept light-tight. The bottom cover 5a is a film cartridge 1 in which a photographed film is wound from the used unit body 2.
Opened when 0 is taken out.

An engaging pin 12 is provided integrally with the rear cover 5. The engagement pin 12 is a film cartridge 10
Is located at a position where it is engaged with one end on the upper side of a lid member 18 provided in the film cartridge 10 when the film cartridge is loaded into the cartridge room 8, and protrudes toward the film cartridge 10. The engaging pin 12 holds the cover member 18 in the open position when the film cartridge 10 is loaded, and when the film cartridge 10 with the photographed film 16 taken in is taken out, the cover member 18 is used.
To the closed position.

More specifically, as shown in FIG. 2, the film cartridge 10 incorporated in the unit body 2 has upper and lower cases 10a and 10b made of a resin molded product and a film 16 rotatably housed therein. It comprises a spool 17 attached and a lid member 18. Lid member 18
Is rotatably incorporated in a film passage 20 formed at a joint between the upper and lower cases 10a and 10b, and one end face thereof is exposed from a side surface of the film cartridge 10. A slit 18a is formed in the lid member 18,
The slit 18a opens the film passage 20 when the cover member 18 is in the rotation position of FIG. 3A, and the closing surface 18b closes the film passage 20 in a light-tight manner when the cover member 18 is in the rotation position of FIG. A spiral groove 18c is formed on the outer periphery of one end of the lid member 18. Upper case 1
An opening 10c is formed in Oa, and a part of the groove 18c is exposed outside the cartridge body 2. This groove 1
An engagement pin 12 provided on the rear cover 5 of the unit main body 2 is engaged with 8c using the opening 10c.

The operation of the above configuration will be described. The unit main body 2 is assembled in a dark room, and the film cartridge 10 is assembled at the time of the assembly. At the time of assembling the film cartridge 10, the cover member 18 is moved to the position shown in FIG.
The film 16 is completely pulled out of the film cartridge 10 and stored in the film roll chamber 7 of the main body base 3 in a rolled state. At this time, the rear cover 5 has not been attached yet, and the bottom cover 5a
1 is open as shown in FIG. 1, the film cartridge 10 and the rolled film 16 can be stored from the bottom side of the main body base 3.

A film cartridge 10 and a film 16
After loading the main body base 3, the rear cover 5 is attached,
At the same time, the engaging pin 12 is opened from the opening 10c formed in the upper case 10a of the film cartridge 2.
This is performed while adjusting the position so as to engage with the groove 18c.
When the lid member 18 of the film cartridge 2 is rotated to the open position, what is seen from the opening 10c is the closed surface 18b.
And the engaging pin 12 is engaged with the groove 18c. After the rear cover 5 is attached and the back surface of the main body base 3 is light-tightly covered, the bottom cover 5a is closed.

After assembling the unit body 2 in this way,
A film box with a lens is completed by covering a paper box with cosmetic printing on the surface. As is well known, an opening is formed in a required portion of the paper box, and the lens-fitted film unit is used in the paper box. By operating the winding operation dial 25 (FIG. 4) every time the photographing operation is performed, the spool 17 of the film cartridge 10 is rotated, and the photographed film 16 is removed from the film cartridge 10.
Get caught in. Then, when the dial 25 is turned after the last frame is photographed, all the photographed films 16 are wound into the film cartridge 10.

The used lens-fitted film unit is directly collected in a developing station, where the paper box is removed and the film cartridge 10 is taken out of the unit body 2. This removal operation is performed in a light room. First, the bottom cover 5a is opened. Next, the film cartridge 10 visible in the cartridge chamber 8 is pulled out below the unit body 2. The cover member 18 that is engaged with the engaging pin 12 at the same time as being pulled out is rotated by the spiral groove 18 and the engaging pin 12, and the film cartridge 10 is moved to the unit body 2.
When the cover member 18 is completely pulled out of FIG.
It is in the closed position as shown in FIG.

When the cover member 18 is rotated to the closed position, the film passage 20 of the film cartridge 10 is closed and light is blocked. As described above, when the film passage of the film cartridge 10 is shielded at the same time as the operation of taking out the film cartridge 10, the film cartridge can be removed in the light room without using a light-blocking cloth for the film cartridge as in the related art. It is possible to do. Therefore, the entire film cartridge 10 can be made of the same resin molded part, and the reuse of the film cartridge is greatly simplified.

In practicing the present invention, the engaging pin provided on the rear cover may be integrated with the rear cover or may be a separate component. When it is taken out from the attached film unit, it is necessary to firmly engage with the spiral groove of the lid member and to have a strength not to break due to the resistance of the rotation of the lid member.

[0019]

As described above, according to the film cartridge using the present invention, the film cartridge in which the photographed film has been wound is taken out of the film unit with the lens, and at the same time, the lid member provided in the film passage. When the film is turned to the closed position, the film is shielded from light.Therefore, all parts are made of resin molded products without using a foreign material such as a flocking cloth used in conventional film patrones. Thus, the production cost of the film cartridge itself can be reduced, and parts and materials can be easily reused at low cost.

Further, according to the film unit with lens to which the present invention is applied, a mechanism for taking out the film cartridge and closing the cover member of the film cartridge at the same time without increasing the number of components of the film unit with lens can be slightly engaged. Since it is possible with one pin, the manufacturing cost of the film unit with the lens can be maintained as it is. Further, even when the film cartridge is taken out in a bright room, the possibility of exposing the photographed film to external light is eliminated.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing the appearance of a film unit with a lens using the present invention, and an external view of a film cartridge.

FIG. 2 is a partially cutaway perspective view of a film cartridge using the present invention.

FIG. 3 is a sectional view of a main part of the film cartridge shown in FIG. 2;

FIG. 4 is a sectional view of a main part in a state where a film cartridge is loaded in the unit main body shown in FIG. 1;

[Explanation of symbols]

 2 Unit body 4 Front cover 5 Rear cover 5a Bottom cover 10 Film cartridge 12 Engagement pin 16 Film 18 Cover member

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-279947 (JP, A) JP-A-4-251250 (JP, A) JP-A-2-124564 (JP, A) JP-A-2- 64533 (JP, A) Actually open 63-191331 (JP, U)

Claims (4)

(57) [Claims] 1. A film cartridge which is used by being mounted on a film unit with a lens for taking out a photographed film cartridge from an axial direction, between a closed position for blocking a film passage and an open position for opening a film passage. see write set a closable lid member to the cassette shell, the outer peripheral surface of one end side of the lid member, the lid portion
The direction of rotation of the material and the axis from which the film cartridge is taken out
A film that has been photographed by forming a spiral groove along the direction
Film with lens when removing the patone from the axial direction
The engagement pin provided on the unit is engaged with the spiral groove.
So, the film cassette, wherein Rukoto is rotated to the closed position the lid member. 2. A pivotable between an open position for opening the closed position and the film passageway to block the film passageway to the light-tight
The rotation direction and the film patrol are
A spiral groove is formed along the axial direction from which the thread is removed.
The patrone body incorporating the lid member, and a film roll obtained by rolling a film having one end locked to a spool rotatably housed in the patrone body are pre-loaded into the patrone chamber and the film chamber, respectively. In the film unit with lens, the spool is rotated by a film winding operation after photographing, the photographed film is wound into the cartridge body, and all the film is wound around the cartridge body after photographing the last frame. When the patrone body is loaded into the patrone chamber, the patrone body is engaged with the spiral-shaped groove of the lid member that has been opened in advance and is held in the open position, and when the patrone body in which all the films have been rolled in is taken out from the patrone chamber in the axial direction. Spiral-like
Is rotated to the closed position from the open position the lid member along the groove
Film unit, characterized in that it comprises a Rukakarigo pin. 3. The film unit with a lens,
A main body base provided with a patrone chamber and a film chamber,
Front and rear covers that cover the front and back
At least a bottom cover for covering the bottom of the patrone chamber;
The trolley body is loaded from the back into the patrone chamber, and
When taking out the patrone body by opening the bottom lid
2. The device according to claim 1, wherein
Is a film unit with a lens described in 2. 4. The cartridge body, spool and lid
4. The material according to claim 3, wherein the material is a resin molded product.
Film unit with lens.