JP3190171B2 - Film unit with lens and method of manufacturing 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 lens-fitted photo film unit, and more particularly to a lens-fitted photo film unit having a main body divided into two parts.

[0002]

2. Description of the Related Art Conventionally, a film unit with a lens (hereinafter referred to as "film unit") proposed in Japanese Patent Application No. Hei 3-200050 is an international standard ISO 1 standard.
A main unit in which a 135-type film with a patrone specified in 007-1979 is pre-loaded at a factory, and an exposure unit which is detachably mounted on the front surface of the main unit and has a film winding mechanism and a shutter mechanism. It comprises a rear cover which is attached to the back of the main body and hermetically seals the film with the main body, and a front cover which is attached to the front of the main body.

[0003] Such a film unit is submitted to a developing laboratory as it is when all frames of a negative film built in advance are completed. At the photo lab, the patrone containing the exposed film is taken out and subjected to processing such as development and printing using the current development processing system.
The user is returned with a print photo and a film negative.

[0004] In order to protect the environment or reduce industrial waste, industrial products are being recycled. Recently, film units have been recycled in various forms. After disassembling used film units, some parts can be reused as they are, or they can be melted and pelletized for reuse as raw materials. However, it is more advantageous in terms of cost to use more reusable parts. Japanese Patent Application No. 3-200 mentioned above
The film unit proposed in Japanese Patent Publication No. 050 has a structure in which the exposure unit can be attached to and detached from the main body, and the exposure unit can be reused as it is. In the case where parts are recycled as raw materials, the work of disassembling the film unit, classifying the parts for each material, and melting and pelletizing each material is performed.

[0005]

By the way, the main body of the film unit is directly connected to a film roll chamber for storing a film wound in a roll form, a film rail serving as a guide for feeding the film, or the like. There are parts that come into contact with each other, and if these parts are dirty or damaged, adverse effects such as damaging the film are expected, so the main body base is recycled as a raw material. However, melting and pelletizing the main body, which is the largest component among the components constituting the film unit, and re-molding, increase the number of working steps and cause an increase in cost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above background, and has as its object to provide a film unit with a lens having a main body base for improving recyclability.

[0007]

In order to achieve the above object, a film unit with a lens according to the present invention comprises a film unit.
Patrone storage room and shooting without contact within the exposure range of LUM
A first body part is formed from the mechanism, and both are in contact with the film surface.
The film roll chamber and the film support surface that are touched and supported
Forming a second body part from the first body part and the second body part.
Body parts are positioned with respect to each other and detachable by engaging means
By engaging with the base body
It is.

Further, the first main body part and the second main body part
Of a lens-fitted film unit with a base
As a manufacturing method, the first main body part and the second main body part are engaged.
Assemble the main body base by means of detachable engagement using means
Main body assembly process and patrone storage room for first main body parts
And put it out of the patrone
The film in roll form 1 is used as the film of the second body part
The process of storing in the roll room and the rear cover on the back of the main unit base
Attach the bar to seal the film light tightly,
And a sealing step of supporting the surface.

[0009]

FIG. 2 shows the appearance of a film unit according to the present invention. The film unit 2 is of a type designed to be thinner, and includes a unit main body 3 having a built-in photographing mechanism and the like, and an outer case 4 for housing the same. The outer case 4 has a contour that exposes the winding knob 5, the strobe light-emitting portion 6, the shutter button 7, and the like. The outer case 4 further includes a lens hood 8, an object-side finder window 9a, an eyepiece-side finder window 9b, and the number of shots. A hole for exposing the display plate 10 and the like is provided.

As shown in FIG. 3, the unit main body 3 is composed of a main body base 13, an exposure unit 14, a strobe unit 15, a front cover 16, and a rear cover 17. It is detachably attached depending on the case. In the main body 13, a patrone storage chamber 19 and a film roll chamber 20 are formed on both sides of the optical axis 18. The front surface of the outer wall of the patrone storage room 19 has a shape protruding forward from the front surface of the outer wall of the film roll room 20.

As shown in an exploded view of FIG. 4, the main body base 13 has a first main body part 26 in which the cartridge housing chamber 19 and the unit base 25 of the exposure unit 14 are integrally formed.
And a second main body part 24 in which a film roll chamber 20 and a light shielding cylinder 23 having an exposure opening 21 and the like are integrally formed . In assembling the two parts, the pins 23a and 23b formed in the light shielding cylinder 23 are positioned by fitting into the holes 25a of the unit base 25 and the holes (not shown) formed on the back side of the unit base 25. ,
This is performed by engaging the claws 27 and the claws 28 of the second main body component 24, which are the engagement means, with the contact portions 29 and the openings 30 of the first main body component 26.

The above-mentioned main body base 13 has a patrone 13
5 films are stored, the patrone is stored in the patrone storage chamber 19, and the unexposed film in the form of a roll drawn out of the patrone is stored in the film roll chamber 20 and then light-tightly sealed with the rear cover 17. I do.
The patrone storage chamber 19 has a size corresponding to the diameter of the patrone according to the ISO standard, and the film roll chamber 20 has a size smaller than the diameter of the patrone storage chamber 19. The unexposed film accommodated in the film roll chamber 20 can be accommodated by reducing the roll form to a small diameter because a roll core such as a spool is not required.

Above the patrone storage chamber 19, a hoisting knob 5 which engages with the axis of the patrone is provided rotatably. A tooth row 5a in which teeth are arranged at a constant pitch is formed on the outer periphery of the winding knob 5, and is used as an engaging portion for stopping.

An exposure unit 14 and a strobe unit 15 having a battery 32 and a switch piece 33 are assembled on the front surface of the main body base 13, and are finally fixed by a front cover 16. The front cover 16 has a shape in which a portion located in front of the patrone storage room 19 protrudes along the contour of the patrone storage room 19, and an outer wall of the protruding portion serves as a grip portion 34.

In FIG. 5, which is an exploded view of the exposure unit 14 integrated with the first main body part 26, the unit base 25 of the exposure unit 14 has a one-stage protruding surface 35 provided on the optical axis 18 at the front. An exposure opening 36 provided on the surface 35, a finder holding frame 37 provided above, and the like are formed, and these are integrally formed of a material such as plastic. The finder holding frame 37 has a U-shape with the opening facing upward, and an inverted Galilean eyepiece 38 and an objective lens 39 are respectively assembled from the top toward the opening.

The shutter mechanism and the film winding mechanism are
It is composed of a sprocket 40 made of plastic material, a shutter set cam 41, a locking lever 42, a kick lever 43, a shutter blade 44, a number-of-photographs display plate 10, a driving spring 45 formed of a metal material, a spring 46, and the like. . As is well known, when the winding operation is performed by turning the winding knob 5, the core of the cartridge rotates and the film is transferred. By transferring this film, the sprocket 40
, The shutter setting cam 41 is driven to rotate, the kick lever 43 is set to the charge position via the locking lever 42, and the number-of-photographs display plate 10 is advanced by one scale.

When the release lever 7 is depressed and the locking lever 42 is slightly rotated, the kick lever 43
Is released, and the arm portion 43 a of the kick lever 43 kicks the shutter blade 44 by the bias of the drive spring 45. The shutter blade 44 is provided in the film unit 2.
The cross section in the optical axis direction has a crank shape in order to improve the thickness of the device, and the kicking position and the opening / closing position for opening and closing the exposure opening 36 swing in different directions in the optical axis 18 direction.
Reference numeral 48 is a wall that receives the shutter blade 42.
The shutter mechanism and the film unit winding mechanism described above have the same functions as those described in Japanese Patent Publication No. 2-32615, and a detailed description thereof will be omitted.

An aperture 4 is provided on the front surface of the shutter blade 44.
The shutter cover 49 on which 9a is formed is attached. The shutter cover 49 has two photographing lenses 50 and 5.
1, the spacer 52 inserted between them, and the lens cover 54 exposed to the outside through the opening 8a of the lens hood 8 are assembled, and the assembly of the exposure unit 14 is completed.

In FIG. 1 showing a cross section of the film unit 2, a connecting surface between the first main body component 24 and the second main body component 26 is formed on a side wall of the patrone storage chamber 19.
Since the two-step ridges 60 and 61 are aligned with each other, external light does not enter the patrone storage chamber 19 from this connection surface.

Next, a description will be given of a process of collecting the film unit 2 having the above-described structure from a developing station and disassembling the film unit. In the first step, the outer case 4 is removed from the collected film unit 2. The outer case 4 is recycled as used paper in the case of a paper box, for example. In the second step, the front cover 16 is removed from the unit body 3. The removed front cover 16 is crushed, melted and pelletized. After removing the front cover 16, the battery 32 and the switch contact piece 33 are removed. In the third step, the strobe unit 15 is removed. The strobe unit 15 is sent to an inspection step, where a functional inspection is performed, and a passed one is reused.

In the fourth step, the rear cover 17 is removed and the main body base 13 is moved to the first main body part 26 and the second main body part 24.
And decompose into After being removed, the cover 17 and the second main body component 24 are not reused because the film support surface and the film rail that directly contact the photographic film are formed. The first
The main body part 26 is sent to the function inspection process of the exposure unit 14, and only those which pass the shutter, film winding and counter function inspections and are passed are reused. Also,
The photographing lenses 51 and 52 are removed from the exposure unit 14 and melted into resin pellets because even a slight scratch affects photographing.

Next, the reassembly process of the film unit 2 will be described. First, the newly molded second body part 24 is added to the first body part 26 that has passed the function test.
To form a main body base 13. The winding knob 5 is attached to the main body base 13, and the passed eyepiece 38 and the objective lens 39, or the newly formed eyepiece 38 and the objective lens 39, and the newly formed photographing lens 51,
52 is assembled.

Next, a strobe unit 15 that has passed the function test is attached to the main body base 13. Here, the switch contact piece 33 and the new battery 32 are inserted, and the front cover 16 is attached. Thereafter, a film with a patrone is loaded from the back side of the main body base 13 in a dark room, and the rear cover 1 is mounted.
Seal with 7. Finally, by covering with the outer case 4, FIG.
The film unit 2 shown in FIG.

[0024]

As described above, the present invention can be applied to both films.
The patrone storage room and the photographing mechanism that do not come in contact with the exposure range
And the first body part made of
The second roll from the film roll chamber and the film support surface
Since the body base is composed of body parts, the lens after use
After recovering the attached film unit,
The main body part and the second main body part are easily separated, and each part
And perform appropriate recycling. Also, the first
Assembling the main body part with the second main body part to assemble the main body base
After loading the patrone and film, and then
The rear cover is attached to the base of the main unit.
It does not cause light shading on the LUM.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a film unit with a lens according to the present invention.

FIG. 2 is a perspective view showing an appearance of a film unit with a lens.

FIG. 3 is an exploded perspective view of a unit main body.

FIG. 4 is an exploded perspective view of a main body base.

FIG. 5 is an exploded perspective view of the exposure unit.

[Explanation of symbols]

 2 Film Unit with Lens 13 Main Unit Base 14 Exposure Unit 19 Patrone Storage Room 20 Film Roll Room 23 Light Shielding Tube 24 Second Main Body Component 25 Unit Base 26 First Main Body Component

Claims (2)

(57) [Claims] 1. A state in which one end is locked to a cartridge core.
The film is pulled out and the core is rotated.
When the patrone where the film is wound up is stored
When the film drawn from the patrone comes into contact
Unsupported patrone storage room and storage while contacting and supporting rolled film
Film roll chamber, and a patrone storage chamber and a film roll chamber.
And has an exposure frame for giving exposure,
A film that guides when film is fed while supporting and supporting the film
The film support surface and the film support surface are located in front of the filming optical axis direction.
And the exposure range of the film supported on the film support surface.
A photographing mechanism including a shutter mechanism that does not touch the inside
And a film attached between the main body base and the back of the main body base.
Rear cover that supports the back of the film by sealing the film light tightly
And a first main body part in which the main body base is physically separated from each other.
And the second main body part, and both the first main body part do not come into contact with the film within the exposure range.
The cartridge body and the photographing mechanism, and the second main body part is in contact with and supports the film surface.
Formed from the film roll chamber and the film support surface
The first body part and the second body part are positioned with respect to each other.
Film unit, characterized in Rukoto assembled removably by engagement means. 2. A state in which one end is locked to a cartridge core.
The film is pulled out and the core is rotated.
When the patrone where the film is wound up is stored
When the film drawn from the patrone comes into contact
Unsupported patrone storage room and film
Photographing mechanism including shutter mechanism that does not come into contact with the exposure range
And a first body part formed from the film and stored while contacting and supporting the film wound in a roll shape.
Film roll room, patrone storage room and film
Has an exposure frame formed between the roll chamber and
Film while contacting and supporting the film.
And a film supporting surface for guiding during feeding.
The two body parts, and the first body part and the second body part are positioned with respect to each other.
Engaging means for detachably engaging the
A file is attached between the body base and the back of the body base, and
Rear cover that supports the back of the film by sealing the film light tightly
And a method of manufacturing a film unit with a lens having
Fraud and mitigating risk and the first body part and second body part with the engagement means
Main body assembly that detachably engages and assembles the main body base
Process and storing patrone in patrone storage room of first body part
Rolled out of the patrone
For storing the film in the film roll chamber of the second body part
During the delivery process, attach the rear cover to the back of the main unit base to light-tighten the film.
And sealing process to support the back of the film
Method of manufacturing film unit with lens
Law.