JP2000214558A - Film unit with lens and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a film unit with lens capable of easily and surely attaching a back cover to a unit main body and being used plural times. SOLUTION: This film unit is provided with a unit main body 1 having a photographic image frame part for forming a photographic image plane by exposing unexposed film by a photographing lens, an unexposed film chamber 1b which is arranged on either side in the case of putting the photographic image frame part in between, in which an unexposed film roll is previously housed in a production stage and whose one part of a base, at least, is opened and an exposed film chamber 1c which is arranged on the other side in the case of putting the photographic image frame part in between an in which exposed film is housed, and a back cover 4 capable of opening/closing the back surfaces of the chambers 1b and 1c; and the cover 4 is constituted by integrally molding at least a base cover part 4e for covering the base of the chamber 1b, a shaft part or a bearing part 1d so that the cover 4 is pivotally supported in the main body 1 and an engaging part for maintaining the cover 4 in a closed state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film unit with a lens, and more particularly, to loading a new film without disassembling a photographed film unit with a lens, in which an unexposed film is built in at a manufacturing stage. The present invention relates to an improvement of a lens-equipped film unit (also referred to as a "several time use film unit") that can be used a plurality of times by making it possible.

[0002]

2. Description of the Related Art Conventionally, cameras are used by many users, but some of the users are not familiar with the operation of the camera, and in particular, have difficulty in loading unexposed film into the camera. There are many.

[0003] In order to respond to such user demands,
A so-called lens-equipped film unit is commercially available, which has a built-in film which has not been exposed in advance and has a simple photographing mechanism. The user who purchases the film unit with the lens does not need to load the film prior to shooting, and can immediately shoot, and the film is entangled in the film container for each shooting,
Since it is only necessary to take out each film unit with a lens to a developing station without rewinding the film or taking out the film after taking all the frames, it is widely used by users who are not familiar with cameras because of its simplicity.

[0004] In a developing station, a lid member for taking out a film container formed on a film unit with a lens is opened or a back cover is removed to remove a film container containing an exposed film. The film is developed and printed in the same manner as a film taken with a normal camera.

[0005] By the way, a lens-fitted film unit is also called a single-use camera, and is manufactured by a manufacturer with the intention of photographing only one film loaded in advance. Therefore, the manufacturer collects the used lens-equipped film unit that has been sent to the photo lab as described above, dismantles the collected lens-equipped film unit once, performs a function test on each part, and reuses the part. Parts are reused and non-reusable parts are replaced with new parts. In this way, the film unit with the lens that has been reusably reproduced can be loaded with unexposed film and a film container in a dark or bright room with the back cover removed, and then used with the back cover It is a film unit with a lens.

[0006]

In recent years, various improvements have been made to the above-described film unit with a lens, such as improvement in image quality and multi-function mounting, and the structure in the film unit with a lens has become considerably complicated. I have. For this reason, the cost of a single film unit with a lens tends to be higher than before, and attempts have been made to reduce the total cost by increasing the efficiency of recycling.

[0007] However, after being collected from the developing laboratory,
Disassembling the film unit with lens, inspecting each part, replacing non-reusable parts, loading new film, and incorporating the back cover takes time,
Due to the complexity, the cost for reproduction is high, and as a result, there is a problem that it does not contribute to effectively reducing the cost of the film unit with the lens.

The present inventors cannot efficiently reduce the cost of recycling a lens-fitted film unit because:
The disassembly process and the assembling process of the lens-equipped film unit at the time of recycling are a major problem. It was found that it was due to the structure itself. In other words, the internal structure of the film unit with lens is unlikely to break down, and even if it is used several times, the inspection of parts may not be necessary. You must dismantle the unit. This structure hinders a reduction in the number of recycling steps, and makes it difficult to reduce the cost of the lens-fitted film unit.

In view of the above problems, the present inventors have proposed a structure in which an unexposed film is incorporated in advance in the same manner as a conventional film unit with a lens, and the photographed film is wound into an exposed film chamber for each photographing. It does not require loading the previous film or rewinding the film after shooting.
Unlike the one that presupposes only single use (single use), by adopting a configuration that presupposes multiple use (several use), a back cover that can reduce recycling costs and reduce total cost A new type of film unit with a lens that does not separate from the unit body (Several Time Use Film Unit)
Suggested.

The present invention is a further improvement of the above-described structure. One of the objects of the present invention is that the rear cover has a simple structure and can be reliably opened and closed without being separated from the unit body. An object of the present invention is to provide a film unit with a lens that can quickly open and close the camera. Another object of the present invention is to provide a method of manufacturing a film unit with a lens, which allows a back cover to be easily, quickly and reliably assembled to a unit body.

[0011]

The above object can be achieved by any of the following.

(1) A photographing frame portion for exposing an unexposed film by a photographing lens to form a photographing screen, and an unexposed film roll disposed on one side of the photographing frame portion. Pre-stored in the manufacturing stage, an unexposed film chamber with at least a part of the bottom surface opened, and an exposed film for storing the exposed film, which is disposed on the other side with the photographing frame portion interposed therebetween. A unit body having a chamber, and a back cover capable of opening and closing the back of at least the unexposed film chamber and the exposed film chamber,
The back cover is a bottom cover portion for covering at least a bottom surface of the unexposed film chamber, a shaft portion or a bearing portion for being supported by the unit main body, and for maintaining the back cover in a closed state. A lens unit with a lens, wherein the engaging unit and the engaging unit are integrally formed.

(2) At least a photographic frame portion for forming a photographic image by exposing an unexposed film with a photographic lens, and an unexposed film roll disposed on one side of the photographic frame portion. An unexposed film chamber pre-stored in the manufacturing stage, a unit body having an exposed film chamber for storing an exposed film disposed on the other side of the photographing image frame portion, and the unit body On the other hand, it is openable and closable without separating, covers the unexposed film chamber and the exposed film chamber in a closed state, and opens the unexposed film chamber and the exposed film chamber in an open state, a back cover, and the unit At one end of the main body, a protrusion integrally formed with the back cover is held in a sliding portion integrally formed with the unit main body so as to be freely opened and closed, or Holding means for slidably holding a sliding portion integrally formed on the back cover at a projection integrally formed with the unit body at one end of the body, stopping means for restricting sliding of the back cover, A film unit with a lens, comprising: engagement means for maintaining the back cover in a closed state.

(3) A photographic image frame portion for exposing an unexposed film by a photographic lens to form a photographic image, and an unexposed film roll disposed on one side of the photographic image frame portion. Pre-stored in the manufacturing stage, an unexposed film chamber with at least a part of the bottom surface opened, and an exposed film for storing the exposed film, which is disposed on the other side with the photographing frame portion interposed therebetween. A unit body having a chamber, and a back cover capable of opening and closing the back of at least the unexposed film chamber and the exposed film chamber,
The back cover is a bottom cover portion for covering at least a bottom surface of the unexposed film chamber, a shaft portion or a bearing portion for being supported by the unit main body, and for maintaining the back cover in a closed state. A method for manufacturing a lens-fitted film unit in which an engaging portion is integrally formed, wherein the shaft portion or the bearing portion is engaged with a bearing portion or a shaft portion provided on a unit body while elastically deforming the back cover. Making the back cover close,
Maintaining the back cover in a closed state. A method for manufacturing a film unit with a lens, comprising:

(4) At least a photographing frame portion for forming a photographing screen by exposing an unexposed film with a photographing lens and an unexposed film roll disposed on one side of the photographing frame portion. An unexposed film chamber pre-stored in the manufacturing stage, a unit body having an exposed film chamber for storing an exposed film disposed on the other side of the photographing image frame portion, and the unit body On the other hand, it is openable and closable without being separated, comprising a back cover that covers the unexposed film chamber and the exposed film chamber in a closed state, and opens the unexposed film chamber and the exposed film chamber in an open state, A protrusion formed on the back cover is held openably and closable while elastically deforming the back cover on a sliding portion formed at one end of the unit body. Or a step of slidably holding a sliding portion formed on the back cover while elastically deforming the back cover on a projection formed at one end of the unit body, and sliding the back cover. Regulating process;
And maintaining the back cover in a closed state.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a new film unit with a lens (hereinafter, also referred to as a "several time use film unit") according to the present invention will be described with reference to the drawings. In this embodiment, a general time use film unit having a built-in film and battery will be described. In addition, when there is no battery, the description is omitted because it is the same except for the configuration without the battery chamber and the battery.

The film used in the embodiment is IX2
40 film (APS film) and IX240 film container will be described as a film container.
The present invention is not limited to this, and for example, a J135 film, or a cartridge for J135 as a film container may be used. As a method of loading the film, after storing the film container in which the unexposed film is stored in the exposed film chamber, winding the unexposed film, storing the film in the unexposed film chamber, and storing the film in the film container for each photographing. A description will be given of a winding type, but the present invention is not limited to this.For example, a type in which an unexposed film wound in advance on a spool is loaded into an unexposed film chamber and the leading end of the film is engaged with a spool inside a film container May be. Further, the film is not stored in the used film container, but may be a film wound around a light-shielding paper, such as a so-called Brownie film of J120 type or J220.

(First Embodiment) Claims 1, 5, 6,
An embodiment according to the invention described in Item 10 will be described with reference to the drawings. FIG. 1 is an exploded perspective view of a film unit with a lens as viewed from the back. As shown in the figure, the film unit with a lens includes a unit main body 1 corresponding to a skeleton, a front cover 2 covering the unit main body 1, a back cover 4, and the like.

The unit body 1 includes a photographic frame 1a for exposing an unexposed film by a photographic lens to form a photographic image, and an unexposed film roll on one side of the photographic frame 1a. An unexposed film chamber 1b for accommodating an exposed film is formed on the other side of the unexposed film chamber 1b, and an opening of the unexposed film chamber 1b. 11b is open, and the opening 11c of the exposed film chamber 1c is also open. Further, a mechanism (winding means) for storing the unexposed film F in the unexposed film chamber 1b in the film container C stored in the exposed film chamber 1c for each photographing operation by operating the winding knob 3 is arranged in the unit body. Have been. Further, a battery chamber 5 is formed in the unit body 1 and accommodates a flash battery B for emitting light by a flash device (not shown).

The back cover 4 forms a bottom cover 4e and the like. The bottom cover 4e is a bottom cover 41e on the unexposed film chamber side and a bottom cover 42e on the exposed film chamber side.
And can be freely opened and closed with respect to the unit body 1. Also,
In the closed state, the unexposed film chamber 1b, the exposed film chamber 1c, and the battery chamber 5 are covered. In the open state, the back cover 4 opens the unexposed film chamber 1b, the exposed film chamber 1c, and the battery chamber 5. The pressure plate 4d regulates the film F from the base surface, the winding knob opening 4g is an opening for avoiding the winding knob 3, and the finder opening 4f is an opening for avoiding the finder 75.

Next, a bearing portion 1d consisting of two holes is formed integrally on the left side of the unit body 1 when viewed from the back, while a shaft portion consisting of two shafts on the left side when viewed from the back of the back cover 4. 4a is integrally formed. By inserting the shaft portion 4a of the back cover 4 into the bearing portion 1d of the unit body 1, the back cover 4
It can be opened and closed, and constitutes the holding means in the present invention.

Two engaging claws 1e are integrally formed on the right side of the unit main body 1 when viewed from the back, while two engaging holes 4b are integrally formed on the right side of the back cover 4 when viewed from the back. ing. The rear cover 4 can be maintained in a closed state by engaging and fixing the engagement holes 4b provided on the rear cover 4 with the two engagement claws 1e provided on the unit body 1. It constitutes the engagement means in the invention. The opening concave portion 4c is a portion to which a special tool is applied to release the engagement between the engaging claw 1e and the engaging hole 4b.

Next, the operation of the film unit with a lens according to the present embodiment will be described. As shown in FIG. 1, a film container C is loaded in the exposed film chamber 1c, and an unexposed film F drawn out of the film container C and wound on a spool S is loaded in the unexposed film chamber 1b.
Is inserted, and with the flash battery B inserted into the battery chamber 5, the shaft portion 4a of the back cover 4 is inserted into the bearing portion 1d of the unit body 1, and the engaging hole 4b is engaged with the engaging claw 1e. Then, the rear cover 4 is kept closed.

After that, the film unit with the lens manufactured and shipped in this way is photographed by a user for a predetermined number of films. The film exposed by photographing is stored in the film container C by winding up the winding knob 3 for each photographing.

Next, in order for the user to develop the exposed film, the exposed film is sent out to a developing station for each unit. At the developing station, all the films F are stored in the film container C by rotating the winding knob 3, and then a special tool for opening the back cover 4 is used to take out the exposed film from the unit body 1. The engagement between the engagement claw 1e and the engagement hole 4b is released by applying an operation to the concave portion 4c.

As a result, the back cover 4 is rotated about the shaft 4a to open the exposed film chamber 1c, the unexposed film chamber 1b, and the battery chamber 5 necessary for film exchange. The film container C containing the film F is taken out from the exposed film chamber 1c, and is subjected to a developing process in the same manner as a film photographed by a normal camera.

On the other hand, the lens-equipped film unit taken out of the film container C is collected by a manufacturer for recycling. The manufacturer opens the collected rear cover 4 of the film unit with the lens in the same manner as in the above-described operation in the developing laboratory. The used flash battery B is taken out of the opened battery chamber 5 and a new flash battery B is loaded into the battery chamber 5.

Next, the film F is pulled out from the new film container C containing the unexposed film,
And the spool S on which the unexposed film F is wound
Is loaded into the unexposed film chamber 1b, and the film container C is loaded into the exposed film chamber 1c.

After that, the rear cover 4 is rotated to engage the engaging claw 1.
e, the engaging hole 4b is engaged to cover the unexposed film chamber 1b, the exposed film chamber 1c, and the battery chamber 5. In this way, a film unit with a lens, that is, a time use film unit is completed.

According to the above configuration, since the shaft or the bearing is integrally formed on the unit body and the shaft or the bearing is integrally formed on the back cover, the structure of the holding means is simplified, and the holding of the back cover is ensured. , And lower prices can be achieved. Further, the rear cover has a simple structure and can be reliably opened and closed without being separated from the unit main body, so that the rear cover can be quickly opened and closed.

Next, a method of manufacturing a film unit with a lens will be described with reference to FIG. In the holding process,
The rear cover 4 is moved in the direction of the arrow 6 and overlaps the unit body 1. Further, when pushed in the direction of arrow 6, the tapered portion t of the shaft portion 4a formed on the back cover 4 hits the ridge line 1k of the unit body 1, and the tapered portion t is pushed, so that the periphery of the shaft portion 4a of the back cover 4 is pressed. The shaft portion 4a is elastically deformed, and the shaft portion 4a is inserted into the bearing portion 1d, so that the back cover 4 becomes rotatable with respect to the unit body 1.

In the engagement step, the other end of the unit body 1 is engaged to maintain the back cover 4 in a closed state.

With the above construction, according to the method of manufacturing a film unit with a lens of the present invention, the back cover can be easily, quickly and reliably incorporated into the unit body, and if necessary, easily. It can also be removed.

As a modification, the bearing formed on the back cover 4 may be engaged with the shaft formed on one end of the unit body 1 while elastically deforming the back cover 4. The tapered portion t of the shaft portion 4a may be eliminated, and the shaft portion 4a composed of the two shafts of the back cover 4 may be spread by a dedicated jig (not shown) so that the shaft portion 4a is engaged with the bearing portion 1d. Also, a tapered portion may be provided on the ridge line 1k.

(Second Embodiment) Claims 2, 5, 7,
An embodiment according to the invention described in Item 10 will be described with reference to the drawings. FIG. 2 is an exploded perspective view of another film unit with a lens as viewed from the back. Members that are mechanically the same as those in FIG.

The unit body 1 is a photographic image frame 1 for exposing an unexposed film by a photographic lens to form a photographic screen.
a, an unexposed film chamber 1 in which an unexposed film roll is previously stored at one side of a photographing image frame portion 1a at a manufacturing stage.
b, an exposed film chamber 1c for accommodating an exposed film on the other side of the photographed image frame 1a. The opening 11b of the unexposed film chamber 1b is open, and the opening 11c of the exposed film chamber 1c is also open. Further, the unit body 1 has two shafts 1j.
Are integrally formed.

The back cover 43 has a bottom cover 4e. The bottom cover 4e has an unexposed film chamber side bottom cover 41e which independently closes the opening 11b of the unexposed film chamber from the ridge 4p. The uncovered film chamber side bottom cover 41e has an engagement claw 4h that engages with an engagement groove 1f formed in the unit body 1. The bottom cover 4e has an exposed film chamber side bottom cover 42e which independently closes the opening 11c of the exposed film chamber from the ridge 4p, and the exposed film chamber side bottom cover 42e has a unit body. An engaging claw 4j is formed to engage with the engaging groove 1g formed in the engaging groove 1g. It is rotatable with respect to the unit body 1, and covers the back of the unexposed film chamber 1b and the exposed film chamber 1c in the closed state, and the back of the unexposed film chamber 1b and the exposed film chamber 1c in the open state. To release.

Next, a bearing portion 4k formed integrally with the back cover 43 is formed on a shaft portion 1j formed integrally with the unit body 1.
, The back cover 43 can be opened and closed with respect to the unit main body 1, and constitutes a holding means in the present invention.

Two engaging claws 1e are integrally formed on the right side of the unit main body 1 as viewed from the back, while two engaging holes 4b are integrally formed on the right side of the back cover 43 as viewed from the back. . The rear cover 43 can be maintained in a closed state by engaging and fixing the engagement holes 4b provided in the rear cover 43 with the two engagement claws 1e provided in the unit body 1. It constitutes the engagement means in the invention.

Next, the operation of the film unit with a lens according to the present embodiment will be described. As shown in FIG. 2, a film container C is loaded into the exposed film chamber 1c, and an unexposed film F drawn from the film container C and wound around a film core (not shown) is inserted into the unexposed film chamber 1b. When the flash battery B is inserted into the battery chamber 5, the shaft 4k of the rear cover 43 is
Into the bearing portion 1d of the unit body 1, and the engagement hole 4b
Are engaged with the engagement claws 1e to maintain the back cover 43 in the closed state. Thereafter, a core (not shown) is extracted from the film wound in parallel with the axis m. The engaging claw 4h of the unexposed film chamber side bottom cover 41e is engaged with the engaging groove 1f.
The engaging claw 4j of the opening 11c of the exposed film chamber is engaged with the engaging groove 1g. Next, in the film unit with the lens manufactured and shipped in this way, a predetermined number of films are photographed by the user. The film exposed by photographing is stored in the film container C by winding up the winding knob 3 for each photographing.

Next, in order for the user to develop the exposed film, the exposed film is sent out to a developing station for each unit. At the developing station, all the films F are stored in the film container C by rotating the winding knob 3, and then the engagement between the engagement claw 1e and the engagement hole 4b is released by using a special tool.

As a result, the back cover 43 is rotated about the shaft portion 4a to open the exposed film chamber 1c, the unexposed film chamber 1b, and the battery chamber 5 necessary for film exchange. The film container C containing the film F is taken out from the exposed film chamber 1c, and is subjected to a developing process in the same manner as a film photographed by a normal camera.

On the other hand, the lens-equipped film unit from which the film container C has been taken out is collected by a manufacturer for recycling. The manufacturer opens the rear cover 43 of the collected film unit with the lens in the same manner as in the above-described operation in the developing laboratory. The used flash battery B is taken out of the opened battery chamber 5 and a new flash battery B is loaded into the battery chamber 5.

Next, the film F is pulled out from the new film container C containing the unexposed film, wound around a winding core (not shown), and the wound unexposed film F from which the winding core has been removed is placed in the unexposed film chamber. 1b, film container C
Is loaded into each of the exposed film chambers 1c.

Thereafter, the rear cover 43 is rotated to engage the engaging hole 4b with the engaging claw 1e, and the unexposed film chamber 1b,
The exposed film chamber 1c and the battery chamber 5 are covered. afterwards,
A winding core (not shown) is wound and extracted from the film. Further, the engaging claw 4h of the unexposed film chamber side bottom cover 41e is engaged with the engaging groove 1f, and the engaging claw 4j of the opening 11c of the exposed film chamber is engaged with the engaging groove 1g. In this way, a reusable film unit with a lens, ie, a universal time use film unit is completed.

With the above structure, the shaft or the bearing is integrally formed on the unit main body, and the shaft or the bearing is integrally formed on the back cover. Therefore, the structure of the holding means is simplified, and the holding of the back cover is ensured. , And lower prices can be achieved. Further, the rear cover has a simple structure and can be reliably opened and closed without being separated from the unit main body, so that the rear cover can be quickly opened and closed.

Next, a method for manufacturing a film unit with a lens will be described with reference to FIG. In the holding process,
The rear cover 43 is moved in the direction of the arrow 6 and overlaps the unit body 1. Further, when pushed in the direction of arrow 6, the tapered portion t of the shaft portion 1j formed on the unit body 1 hits the ridge line 4m formed on the back cover 43, and the periphery of the bearing portion 4k of the back cover 43 is elastically deformed. And
The shaft 1j is inserted into the bearing 4k, and the rear cover 43 is inserted.
Is rotatable with respect to the unit body 1.

The engaging step engages the other end of the unit body 1 to keep the back cover 43 closed.

With the above-described structure, according to the method of manufacturing a lens-fitted film unit of the present invention, the back cover can be easily, quickly and reliably incorporated into the unit body, and if necessary, easily. It can also be removed.

As a modified example, the shaft formed on the rear cover 43 may be engaged with the bearing formed on the unit body 1 while the rear cover 43 is elastically deformed. Alternatively, the tapered portion t of the shaft portion 1j may be eliminated, and the two bearing portions 4k of the back cover 43 may be spread by a dedicated jig (not shown) so that the bearing portion 4k is engaged with the shaft portion 1j. Further, a tapered portion may be provided on the ridge line 4m. Also,
At the same time as the rear cover 43 is moved in the direction of the arrow 6, the engagement claws 1e may be engaged with the engagement holes 4b.

(Third Embodiment) Claims 3, 5, 8,
An embodiment according to the invention described in Item 10 will be described with reference to the drawings. FIG. 3 is an exploded perspective view of another film unit with a lens as viewed from the back. As shown in the drawing, the lens-fitted film unit includes a unit body 11, a front cover 21, a back cover 41, a back cover 42, and the like.

The unit body 11 has an unexposed film chamber 1b in which an unexposed film roll is previously stored in a manufacturing stage on one side of the photographing image frame portion 1a, and an exposed film on the other side. , And a battery chamber 5 is formed in the unit main body 11 to accommodate a strobe battery B. Note that a bearing portion 1h for partially bearing the shaft portion Sa of the spool S is formed below the unexposed film chamber 1b.

The rear cover 41 has a bearing portion 41f for partially supporting the shaft portion Sa of the spool S. The opening concave portion 41c is used to release the engagement between the engaging claw 1e and the engaging hole 41b. , A part to which a special tool is applied.
1d regulates the film F from the base surface. The spool end opening is formed by the bearing 41f and the bearing 1h. The back cover 41 is openable and closable with respect to the unit body 11, and covers the unexposed film chamber 1b, the exposed film chamber 1c, and the battery chamber 5 in a closed state.
The shaft portion Sa is supported. In the opened state, the unexposed film chamber, the exposed film chamber, and the battery chamber 5 are opened, and the bearing is released.

The back cover 42 is attached to the unit body 11.
, A finder opening 42a and a winding knob opening 42b are formed.

Next, the unit body 11 has a bearing portion 1d having two holes on the left side when viewed from the back, and a shaft portion 41a having two shafts on the left side when viewed from the back surface of the back cover 41.
There is. The rear cover 41 can be opened and closed with respect to the unit main body 11 by engaging the shaft 41 a of the rear cover 41 with the bearing 1 d of the unit main body 11. The unit body 11 has two engaging claws 1e on the right side when viewed from the back, and the rear cover 41 has two engaging holes 41b on the right side when viewed from the back. Back cover 4
The engaging hole 41b provided in the unit body 11 is provided in the unit main body 11.
The rear cover 41 is kept closed by engaging and fixing the two engaging claws 1e.

The spool S is a core for winding the unexposed film F, and the spool S has a shaft Sa. The shaft Sa is rotatable by the bearing 1h of the unit body 11 and the bearing 41f of the back cover.

Next, the operation of the film unit with a lens according to the present embodiment will be described. As shown in FIG. 3, the user sends the exposed film to a developing station in order to have the exposed film developed. At the developing station, all the films F are stored in the film container C by rotating the winding knob 3, and then a special tool for opening the rear cover 41 is used to take out the exposed film from the unit body 11. The engagement between the engagement claw 1e and the engagement hole 41b is released by applying an operation to the concave portion 41c. Thus, the back cover 41 is rotated about the shaft portion 41a to open the exposed film chamber 1c, the unexposed film chamber 1b, and the battery chamber 5 necessary for film exchange. The film container C containing the film F is taken out from the exposed film chamber 1c, and is subjected to a developing process in the same manner as a film photographed by a normal camera.

On the other hand, the lens-equipped film unit from which the film container C has been taken out is collected by a manufacturer for recycling. The manufacturer opens the back cover 41 of the collected film unit with lens.

The used flash battery B is taken out of the opened battery chamber 5 and a new flash battery B is loaded into the battery chamber 5. Next, the spool S is loaded into the unexposed film chamber 1b, and the film container C is loaded into the exposed film chamber 1c. The film F is pulled out from the new film container C containing the unexposed film and is engaged with the spool S. After that, the rear cover 41 is rotated to engage the engaging claw 1
e, the engagement hole 41b is engaged with the unexposed film chamber 1b,
The back cover 41 is kept closed by covering the exposed film chamber 1c and the battery chamber 5. The film is wound around the shaft Sa by a winding jig (not shown). In this way,
A reusable film unit with a lens, that is, a universal time use film unit is completed.

With the above structure, the shaft or the bearing is integrally formed with the unit body, and the shaft or the bearing is integrally formed with the back cover. Therefore, the structure of the holding means is simplified, and the holding of the back cover is ensured. , And lower prices can be achieved. Further, the rear cover has a simple structure and can be reliably opened and closed without being separated from the unit main body, so that the rear cover can be quickly opened and closed.

Next, a method of manufacturing a film unit with a lens will be described with reference to FIG. In the holding process,
The rear cover 41 is moved in the direction of the arrow 6 and overlaps the unit body 11. Further, when pushed in the direction of arrow 6, the tapered portion t of the shaft portion 41a formed on the back cover 41 pushes the ridgeline 1k, so that the periphery of the shaft portion 41a is elastically deformed and the bearing portion 1d formed on the unit main body 1 is moved. When inserted, the rear cover 41 becomes rotatable with respect to the unit body 11.

In the engaging step, the rear end of the unit body 11 is engaged with the other end of the unit main body 11 in order to maintain the back cover 41 in a closed state.

With the above configuration, according to the method of manufacturing a lens-fitted film unit of the present invention, the back cover can be easily, quickly and reliably incorporated into the unit body, and if necessary, easily. It can also be removed.

As a modification, a bearing formed on the rear cover 41 may be engaged with the shaft formed on the unit body 11 while elastically deforming the rear cover 41. In addition, you may provide a taper part also in the ridgeline 1k. Further, it is also possible to move the rear cover 41 in the direction of the arrow 6 and simultaneously engage the engaging claw 1e with the engaging hole 41b. Further, the tapered portion t of the shaft portion 41a is eliminated, and the shaft portion 41a composed of the two shafts of the back cover 41 is formed by a dedicated jig (not shown).
And the shaft portion 41a may be engaged with the bearing portion 1d.

(Fourth Embodiment) Claims 4, 5, 9,
An embodiment according to the invention described in Item 10 will be described with reference to the drawings. FIG. 4 is an exploded perspective view of another film unit with a lens as viewed from the back. Members that are mechanically the same as those in FIG. As shown in FIG. 4, a film unit with a lens is a unit body 1
2, the front cover 22, the back cover 44 and the like.

The unit body 12 manufactures a photographic image frame portion 12a for exposing an unexposed film by a photographic lens to form a photographic image, and an unexposed film roll on one side of the photographic image frame portion 12a. An unexposed film chamber 12b previously stored at the stage, an exposed film chamber 12c for storing an exposed film on the other side of the photographing frame section 12a, and a battery chamber 5 are provided. Further, sliding grooves 12f are provided on both side ends of the unit main body 12, and two engaging grooves 12d are provided on the bottom side of the unit main body 12, and the sliding grooves 12f and the engaging grooves 12d are respectively provided on the unit main body 12. It is integrally molded.

The back cover 44 is a cover for covering the back of the film unit with a lens, and has a projection 44e integrally formed at the left and right ends, and slides in the sliding groove 12f. Further, on the upper part of the back cover 44, the engaging claw 12h is provided.
There are two engagement holes 44b that engage with the holes. The rear cover 44 is slidable with respect to the unit body 12 by inserting the protrusion 44e into the sliding groove 12f, and in the closed state, that is, in the state where the engaging hole 44b is engaged with the engaging claw 12h. Unexposed film chamber 12b, exposed film chamber 1
2c and the battery chamber 5 are covered, and the unexposed film chamber 12b, the exposed film chamber 12c, and the battery chamber 5 are opened in an open state, that is, in a state where the battery chamber 5 is slid to the bottom in the drawing. In addition,
Reference numeral 121f denotes a stop for preventing the back cover 44 from coming off the unit body 12.

The holding means in the present invention is constituted by the sliding groove 12f of the unit body 12 and the projection 44e of the back cover 44. Further, two engagement holes 44b provided in the back cover 44 and two engagement claws 1 provided in the unit body 12 are provided.
2e constitutes the engagement means in the present invention. Further, the stopping part 121f constitutes a stopping means in the present invention. Reference numeral 44c denotes an opening recess for releasing the engagement between the engaging claw 12h and the engaging hole 44b by applying a special tool.

Next, the operation of the film unit with a lens according to the present embodiment will be described. A film container C is loaded in the exposed film chamber 12c in FIG.
The unexposed film chamber 12b is loaded with an unexposed film F pulled out of the film container C and wound on a spool S. Further, with the strobe battery B inserted in the battery chamber 5, the back cover 44 is closed. The protrusion 44e is inserted into the sliding groove 12f of the unit body 12, and the engaging hole 44b is
2h to close the rear cover 44. In the general time use film unit manufactured and shipped in this manner, a predetermined number of films are photographed by the user.

Next, in order for the user to develop the exposed film, the film is sent out to a developing station for each unit. In the developing station, after all the films F are stored in the film container C by rotating the winding knob 3, the engaging claw 12 h and the engaging hole 44 b are engaged to take out the exposed film from the unit main body 12. Cancel the match.

As a result, the projection 44e formed on the back cover 44 comes into contact with the stop 121f. Further, the exposed film chamber 12c is opened by sliding. Further, the film container C containing the film F is taken out from the exposed film chamber 12c, and is developed in the same manner as a film photographed by a normal camera.

On the other hand, the film unit with the lens from which the film container C has been taken out is collected by a manufacturer for recycling. The manufacturer opens the collected rear cover 44 of the film unit with the lens in the same manner as in the above-described developing station.

Next, a new strobe battery B is inserted into the battery chamber 5.
The film F is pulled out from the new film container C containing the unexposed film, wound around the spool S, and the spool S around which the unexposed film F is wound is placed in the unexposed film chamber 12b. The containers C are respectively loaded into the exposed film chambers 12c. Thereafter, the rear cover 44 is slid to engage the engaging holes 44b with the engaging claws 12h to cover the battery chamber 5, the unexposed film chamber 12b and the exposed film chamber 12c, and thus can be reused. A film with a lens, that is, a universal time use film unit is completed.

With the above structure, since the unit body and the member that slides and holds the unit body and the back cover are integrally formed, the structure of the holding means is simplified, the holding of the back cover is ensured, and the cost of the holding means is reduced. To be peeled off. Further, the rear cover has a simple structure and can be reliably opened and closed without being separated from the unit main body, so that the rear cover can be quickly opened and closed.

Next, a method for manufacturing a film unit with a lens will be described with reference to FIG. In the holding process,
The rear cover 44 is moved in the direction of the arrow 7 to approach the unit body 12. The tapered portion t of the projection 44e is the ridge line 1.
When the rear cover 44 further moves at 2k, the rear cover 44 is elastically deformed, and the projections 44e formed on the rear cover 44 enter the sliding grooves 12f formed on the unit body 12 and are slidably held.

In the stopping step, the protrusion 44e formed on the rear cover 44 comes into contact with the stopping portion 121f to restrict the sliding of the rear cover 44.

In the engaging step, the back cover 44 is kept closed.

With the above-described structure, according to the method of manufacturing a film unit with a lens of the present invention, the back cover can be easily, quickly and reliably incorporated into the unit main body, and if necessary, easily. It can also be removed.

The unit body 12 may be provided with a projection and the back cover 44 may be provided with a sliding groove. Also, ridgeline 12
k may also be provided with a tapered portion. Further, the protrusion 44e
Of the rear cover 44 by using a special jig (not shown).
e may be inserted into the sliding groove 12f.

[0080]

According to the above configuration, the following effects can be obtained. That is, according to the lens-fitted film unit of the present invention, since the member that slides and holds the unit body and the back cover is integrally formed, the structure of the holding means is simplified, and the back cover is simplified. And the cost of the holding means can be reduced. Further, the rear cover has a simple structure and can be reliably opened and closed without being separated from the unit main body, so that the rear cover can be quickly opened and closed.

Further, according to the method of manufacturing a film unit with a lens according to the sixth to tenth aspects, the back cover can be easily, quickly and reliably incorporated into the unit body, and can be easily removed if necessary. You can also.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a film unit with a lens as viewed from the back.

FIG. 2 is an exploded perspective view of another lens-fitted film unit as viewed from the back.

FIG. 3 is an exploded perspective view of another lens-fitted film unit as viewed from the back.

FIG. 4 is an exploded perspective view of another film unit with a lens as viewed from the back.

[Explanation of symbols]

 1, 11 Unit body 1b Unexposed film chamber 11b opening 1c Exposed film chamber 11c opening 1d Bearing 1e Engagement claw 1f, 1g Engagement groove 1k, 12k Ridge 2, 21, 22 Front cover 3 Winding knob 4 Back Cover 4a Shaft 4b Engagement hole 4e Bottom cover 41e Unexposed film chamber side bottom cover 42e Exposed film chamber side bottom cover 4h, 4j Engagement claw 41a Shaft 41b Engagement hole 41f Spool bearing 43, 44 Back cover 44a Engagement claw 44b Engagement hole C Film container F Film S Spool Sa Shaft t Taper

Claims (10)

[Claims] 1. An unexposed film roll for exposing an unexposed film by a photographic lens to form a photographic screen, and an unexposed film roll disposed on one side of the photographic image frame. An unexposed film chamber that is stored in advance in the manufacturing stage, and at least a part of the bottom surface is opened, and an exposed film chamber that is disposed on the other side with the photographing frame portion interposed therebetween and stores an exposed film And a back cover capable of opening and closing the back of the unexposed film chamber and the exposed film chamber, wherein the back cover covers at least a bottom surface of the unexposed film chamber. A unit, a shaft or bearing for pivotally supported by the unit body, and an engagement for maintaining the back cover closed. Film unit. 2. The film unit with a lens according to claim 1, wherein the bottom cover can open and close the bottom of the unexposed film chamber independently of opening and closing of the back cover. 3. The unexposed film roll is wound around a spool and accommodated in the unexposed film chamber, and the bottom cover is a spool end for exposing an end of the spool to the outside. The lens-equipped film unit according to claim 1, further comprising an opening. 4. A photographing frame portion for forming a photographing screen by exposing at least an unexposed film by a photographing lens;
An unexposed film chamber which is disposed on one side of the photographing image frame portion and previously accommodates an unexposed film roll in a manufacturing stage, and an exposed film which is arranged on the other side of the photographing image frame portion on the other side. A unit body having an exposed film chamber for storing the unit body, which can be opened and closed without being separated from the unit body, covers the unexposed film chamber and the exposed film chamber in a closed state, and opens in a closed state. A back cover for opening the unexposed film chamber and the exposed film chamber, and a projection integrally formed on the back cover on a sliding portion integrally formed with the unit body at one end of the unit body so as to be freely opened and closed. Holds, or slidably holds, at one end of the unit main body, a protrusion integrally formed with the unit main body at a protrusion integrally formed with the back cover. Holding means and a stop means for restricting the sliding of the rear cover, the lens-fitted film unit, characterized in that it and a engagement means for maintaining the closed state the back cover that. 5. The unexposed film chamber is preloaded with an unexposed film roll drawn out of a film container and formed into a roll in a manufacturing stage, and the exposed film chamber holds the film container. The film unit with a lens which is stored in advance in a manufacturing stage, and the film unit with a lens has a winding means for storing an unexposed film in the unexposed film chamber in the film container for each photographing. The film unit with a lens according to any one of items 1 to 4. 6. A photographic image frame portion for exposing an unexposed film by a photographic lens to form a photographic image, and an unexposed film roll disposed on one side of the photographic image frame portion. An unexposed film chamber which is stored in advance in the manufacturing stage and at least a part of the bottom surface is opened, and an exposed film chamber which is arranged on the other side with the photographing frame portion interposed therebetween and stores an exposed film And a back cover capable of opening and closing a back surface of at least the unexposed film chamber and the exposed film chamber, wherein the back cover covers at least a bottom surface of the unexposed film chamber. A lens unit having a lens unit integrally formed with a unit, a shaft unit or a bearing unit supported by the unit body, and an engagement unit for maintaining the back cover in a closed state. A method of manufacturing the socket, wherein the step of engaging the shaft portion or the bearing portion with a bearing portion or a shaft portion provided in a unit body while elastically deforming the back cover, and a step of closing the back cover. And a step of maintaining the back cover in a closed state. 7. The bottom cover part can open and close the bottom surface of the unexposed film chamber independently of opening and closing the back cover, and the closed state maintaining step includes the step of opening the bottom cover part with the bottom cover part opened. The film unit with a lens according to claim 6, comprising a step of closing a back cover part, a step of closing the bottom cover part, and a step of maintaining the bottom cover part in a closed state. Production method. 8. The unexposed film roll is wound around a spool and housed in the unexposed film chamber, and the bottom cover is a spool end for exposing an end of the spool to the outside. An opening is provided, and the step of maintaining the closed state is a step of maintaining the back cover closed with the end of the spool exposed to the outside. 7. The method for producing a film unit with a lens according to item 6. 9. A photographic image frame portion for forming a photographic screen by exposing at least an unexposed film with a photographic lens;
An unexposed film chamber which is disposed on one side of the photographing image frame portion and previously accommodates an unexposed film roll in a manufacturing stage, and an exposed film which is arranged on the other side of the photographing image frame portion on the other side. A unit body having an exposed film chamber for storing the unit body, which can be opened and closed without being separated from the unit body, covers the unexposed film chamber and the exposed film chamber in a closed state, and opens in a closed state. A projection formed on the rear cover while elastically deforming the rear cover on a sliding portion formed at one end of the unit main body, the projection including a back cover that opens the unexposed film chamber and the exposed film chamber. Holding the portion openably and closably, or by elastically deforming the back cover on a projection formed at one end of the unit body, A film with a lens, comprising: a step of slidably holding the formed sliding portion; a step of restricting sliding of the back cover; and a step of maintaining the back cover in a closed state. Unit manufacturing method. 10. The unexposed film chamber is preloaded with an unexposed film roll drawn out of a film container and formed into a roll at a manufacturing stage, and the exposed film chamber holds the film container. The film unit with a lens which is stored in advance in a manufacturing stage, and the film unit with a lens has a winding means for storing an unexposed film in the unexposed film chamber in the film container for each photographing. The method for producing a film unit with a lens according to any one of items 6 to 9.