JP3122798B2 - 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 film unit provided with a lens and having a function of exposing and feeding a film and capable of immediately taking a picture of a pre-loaded unexposed film.

[0002]

2. Description of the Related Art A film unit with a lens is a so-called film-integrated camera having a photographing function, which is also referred to as a "clear camera". It is used only for photographing film, and after taking out the exposed film, the camera body is discarded. Therefore, the camera body is manufactured with a simple structure at low cost.

[0003] Cameras are often purchased and used on the go when traveling or the like. However, it is hard to say that the camera is convenient to carry, and the camera has a photographic lens of f = 35 mm and the outer shape is 110 mm x 60 m.
It was around mx 35mm and was inconvenient without entering the shirt's breast pocket.

[0004]

However, despite the fact that it is a "camera clearly", the recent diversification of shooting purposes
As in the case of a lens-equipped film unit with a built-in strobe light emitting device, there is a tendency for the camera function to be sophisticated, so that an increase in cost and an increase in camera size are inevitable.

[0005] The applicant has also made a proposal to use a patrone having a small outer diameter in order to make the camera compact. In this case, if the tongue at the leading end of the film is wound into the patrone by the winding after the end of the photographing, it becomes difficult to take out the film from the developing station because the outer diameter of the patrone is small. For this reason, even if the cartridge has a small diameter, it is an issue to easily handle the cartridge in a developing station.

[0006] Further, from the viewpoint of reusing resources, it has been demanded that a camera capable of reusing a "camera clearly", that is, a reusable camera be used.

In order to be able to reuse the camera as it is, it is necessary to recheck the camera for quality assurance, and it is necessary for the manufacturer to ensure sufficient quality. A suitable film unit with a lens is desired.

[0008] Accordingly, there has been a demand for a reuse camera having means for preventing the use of only the film by refilling without checking the camera.

[0009] The present invention, as a result of improve these points, off
An object of the present invention is to provide a film unit with a lens which can easily take out a film and has high reliability .

[0010]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a film unit having an exposure means for photographing and a film feeding means, and a film unit including a film in which a film is preliminarily built in and including a patrone chamber loaded with at least a patrone. A back cover that keeps the room light-tight is provided.
On the surface, a light shielding rib protruding in the direction of the camera body side
And extending in a direction intersecting with the light shielding rib, and
Bending the back cover formed at a position shifted
This is achieved by a film unit with a lens , characterized in that the film unit has a groove which enables the following .

[0011]

[0012]

FIG. 1 shows the appearance of a lens-equipped film unit (hereinafter also referred to as the present camera) of the present invention. The present camera has a 35 mm film (J135) (120 mm in this embodiment).
~ 140μm thick photographic film).
After the photographing is completed, the film is sent to a developing station without being rewound while being stored in the camera, the film is taken out of the camera, and the film is developed and printed.

The unexposed film used in the camera is loaded by a loading method described later. In the loaded state, the film is wound around a spool from a patrone,
Each time a picture is taken, it is wound up in the patrone by winding up. Therefore, in the photo lab, the photographed film can be taken out of the camera in a bright room.

The photographed film can be easily taken out by bending a part of the back cover. Therefore, the camera portion is checked, a new unexposed film is loaded, and the back cover is replaced by the manufacturer. Then it can be reused.

As the patrone loaded in the camera, a patrone having an outer diameter of φ20.6 mm different from a commonly used patrone (JIS K7528) is used.

As a result, the thickness of the camera can be suppressed to about 24 mm except for the lens barrel having the photographing lens, thereby realizing an ultra-thin compact camera.

The camera is provided with a carton (paper cover) made of cardboard on which a product name, a simple usage method, and the like are displayed on a part of its outer surface.

FIG. 2 is a developed view showing the configuration of the camera.

Reference numerals 10, 20, and 30 denote a camera body, a front cover, and a back cover, respectively, which are main components of the camera. Reference numeral 40 denotes a built-in flash unit.
Reference numerals 60 and 70 denote film winding, sector charge and film counter mechanisms, respectively.

The camera main body 10 is provided with a film winding mechanism 50, a sector charging mechanism 60, and members constituting a film counter mechanism 70 when mounted alone, and a shutter case 11 for accommodating a sector.

The shutter case 11 is fixed by engaging claws 11A protruding on both sides with a locking portion 10A on the front surface of the camera body 10, and connects the sector to the sector charging mechanism 60.

Further, on the front surface of the shutter case 11, a photographing lens 12 having a focal length f = 30 mm and having a stop of F9.5 and having a focal length f = 30 mm is dropped and provided with a slide 13A which engages with a guide pin 11B. Covered by the lens holder 13.

The camera body 10 and the shutter case 11 described above.
Is molded from a black matte plastic material having some elasticity, including the front cover 20 and the back cover 30 described above.

On the other hand, the strobe unit 40 is mounted and supported on the basis of holes 40A and 40B on the board which engage with the guide pins 10B and 10C on the front of the camera body 10, respectively.

The strobe unit 40 is composed of an AA battery serving as a strobe charging power source by projecting the upper and lower battery contacts 41 into the slits 10D at the top and bottom of the camera body 10 and projecting into the battery chamber on the back of the camera body 10. A certain power supply battery E is sandwiched.

The integrated main capacitor C is stored in a capacitor chamber formed below the shutter case 11.

The lens holder 13 and the strobe unit 40
Is fixedly integrated with the camera body 10 by mounting the front cover 20 on the camera body 10.

Prior to mounting the front cover 20 on the camera body 10, the objective lens 21 of the finder is dropped on the front surface of the front cover 20 in advance and fixed by the engagement of the decorative cover 22. The makeup cover 22 has a guide pin 22A and four claws 22B on the back.
, Which are respectively engaged with holes 20A on the front face of the front cover 20 and four locking portions 20B to be attached.

The front cover 20 is further attached to the front surface of the camera body 10 after engaging and mounting an eyepiece 23 of a finder on the rear surface.

The front cover 20 has a hole 20C, a claw 20D, and three locking portions 20E on the rear surface, and a guide pin 10E and a claw 10F on the front surface of the camera body 10 and a locking portion 10G on the side surface. Engage and attach.

The engagement of the front cover 20 with the camera body 10 causes the lens holder 13 and the strobe unit 40 to be fixed to the camera body 10.

The camera body 10 with the front cover 20 attached
The cartridge P1 and the spool S2 with the leading end of the unexposed film F are respectively loaded into a patrone chamber and a scroll chamber (both not shown) formed on the back surface thereof.

The leading end of the film F is locked on a spool S1 in the cartridge P1, and even if the film in the cartridge is once wound up by the spool S2 after the film is loaded, the other end is locked on the spool S1. Therefore, it can be wound into the patrone P1 every time the photographing is completed.

A back cover 30 is attached to the back of the camera body 10 loaded with the film F, so that the light shielding of the film F and the restriction on the focus position are maintained.

The back cover 30 has claws 30A and 30B on its front face and holes 30C, 30D and 30E for locking on its side face. The holes 30C, 30D, and 30E are engaged with the claws 10K, 10L, and 10M of the camera body 10, and are fixed to the locking portions 10H and 10J.

After the back cover 30 is mounted, a predetermined film winding operation is performed to set a photographable screen, and the carton shown in FIG. 1 is mounted to complete the screen.

Next, details of the film winding mechanism 50, the sector charging mechanism 60, and the film counter mechanism 70 will be described.

FIG. 3 shows the above-mentioned respective mechanisms at an angle as viewed from the rear side of the camera, and FIG. 4 shows the above-described patrone and the spool in which the film is wrapped, as viewed from the direction in which the spool is inserted into the camera body. It is a thing. (FIG. 3 does not show the portion related to the engagement of the back cover.) The camera body 10 is provided with a film winding unit on both sides of a screen frame 16 which is an exposure unit. A patrone chamber 15A and a scroll chamber 15B are provided as two storage chambers for take-in and film loading, and the J135 film F wound in the patrone P1, which is a storage container shown in FIG. 4, is loaded. I have.

The film F used in the camera of the present embodiment is a roll film J135 or a slightly thin roll film having a thickness of 120 to 140 μm as in a general camera. After the end is fixed to the spool S1 and a predetermined number of frames have been wrapped for a length that can be photographed, a film of a certain length has come out from the film drawer of the cartridge P1. The film in this state is loaded into the camera. The loading method will be described below.

The patrone P1 is loaded into the patrone chamber 15A such that the spool S1 of the patrone P1 engages with the fork of the hoisting fork 52. On the other hand, the spool S2 is also inserted into the scroll chamber 15B. Then, in this embodiment, the film F is pulled out until the tip of the film notch FN of the film F matches the index 17A at the lower portion of the lower rail surface, and the tip of the film F is inserted into the slit SL of the spool S2. The perforations P are locked to the claws H. Of course, the film can be loaded in the camera in a state where the leading end of the film is engaged with the spool S2 in advance.

Next, the back cover 30 is put on the back cover 30 to make the cover light-tight.
Then, the camera in this state is attached to a film winding device as a jig provided by the manufacturer, and the entire film F (with the other end not being detached from the spool S1 of the cartridge P1) is spooled in the scroll chamber 15B. The film is wound by a predetermined length in S2, and the loading of the film is completed. That is, by loading the film F in this manner, the film F is sequentially wound into the patrone P1 for each photographing, and after the photographing of a predetermined number of frames is completed, in this embodiment, two frames are skipped. Thus, the photographed film portion is completely wrapped in the patrone P1, leaving the required length without being wrapped in the patrone. Therefore, this patrone can be taken out of the camera in a bright room.

As described above, the indicator 17A at the lower part of the lower rail surface is used.
In this embodiment, when the film F is pulled out until the tip of the film notch FN of the film F is aligned with the index 17A, the tip of the film F is set to the slit S of the spool S2.
The position is such that it is necessary to lock the perforation P of the film F with the nail H by inserting the film into the nail L and has the shortest length. Further, the position of the index 17A is adjusted by aligning the film notch FN as described above, and in the present embodiment, after the photographing of a predetermined number of frames is completed, two frames are skipped, whereby the leading end of the film F is scrolled. It comes off from the spool S2 of the chamber 15B, so that it does not get caught in the patrone, leaving the required length (so-called velo-remaining state). It has become a position. Conversely, the position of the index and the mark (eg, notch) on the film side are set so as to achieve such a state. This means that the operation of the later-described film counter mechanism 70 is determined by the position of the index 17A, that is, the necessary number of empty feed frames after the photographing of the predetermined number of frames is completed is determined. It is.

The film notch FN is designed to display the emulsion lot number and the like of the film by means of several holes provided in the tongue at the leading end of the film. Of course, instead of diverting the notch, a positioning mark may be separately formed near the leading end of the film.

Next, the mechanism of the main body will be described.

The camera body 10 includes a film winding mechanism 50 including a photographing lens 12, a sector charging mechanism 60,
The main mechanism of the film counter mechanism 70 is incorporated therein.

First, the film winding mechanism and the sector charging mechanism will be described.

Reference numeral 51 denotes a film winding knob. The film F loaded as described above is wound by turning the film winding knob 51 counterclockwise. A cam 55 coaxial with an eight-tooth sprocket gear 54 meshing with the perforation P of the film F and having a fan-shaped cam portion 55B at the bottom.
Is rotated exactly one turn in the counterclockwise direction by winding the film.

That is, the film is wound with the length of eight perforations, which is the number of teeth of the sprocket gear, as one frame, and the frame size is a so-called full size frame size of 24 × 36 mm.

The rotation of the cam 55 in the counterclockwise direction naturally rotates the sector cam portion 55B in the counterclockwise direction as described above. In the process, the charge lever 61 is moved by the sector cam portion 55B to the charge lever shaft 63. Is rotated clockwise against the spring force of the charge lever spring 64 that urges in the counterclockwise direction with the rotation axis as the rotation axis, and the rising portion 65B of the sector lever 65 is rotated
Is pressed, and eventually the vehicle gets over the rising portion 65B to charge the sector charging mechanism as shown in the figure.

The pin 65C of the sector lever 65 and the camera body 10
A sector spring 67 is stretched between the pins 18C provided on the sector lever 67.
The left end of the long hole is brought into contact with a pin 18B provided on the camera body 10 that guides the long hole slidably and rotatably, and the sector lever
The arm plate 65D provided on the camera body 10 is provided with a pin 18 provided on the camera body 10.
It comes into contact with E. A sector drive pin 65A for operating a sector 66 pivotally supported by a sector pin 18D provided on the camera body 10 is inserted into the fork of the sector 66.

As will be described later, a cam stopper after photographing is completed.
The protrusion 62D of 62 is pulled out from the groove 55A of the cam 55,
The arm portion 57A of the hoisting stopper 57 changes from the state shown in the figure to change the arm portion 61A of the charge lever 61 and the arm portion of the cam stopper 62.
It comes off from each edge of 62A, and is in contact with the end face of the arm 61A by the spring force of the hoisting stopper spring 58 that urges clockwise. When the cam 55 rotates just once by the film winding as described above and the groove 55A of the cam 55 returns to the initial position, the spring force for urging the cam stopper 62 by the horizontal end of the charge lever spring 64 in the clockwise direction. As a result, the projection 62D of the cam stopper 62 jumps into the groove 55A. By this jumping operation, the locking of the arm portion 57A of the hoisting stopper 57, which has been locked on the end surface of the arm portion 62A of the cam stopper 62 at this time, is released.

The outer peripheral cylindrical surface of the film winding knob 51 is a ratchet gear, and the V-shaped projection at the end of the winding stopper 57 is released by the release of the lock so that the ratchet gear is actuated by the spring force of the winding stopper spring 58. The film winding knob 51 jumps into the tooth space of the gear 51A, thereby preventing the film winding knob 51 from rotating in the counterclockwise direction. That is, when the film winding is completed, the film winding knob 51 is prevented from rotating further.

In the camera body 10, the tip of a reverse rotation preventing claw 53 utilizing the elasticity of a resin material is pressed against the ratchet gear 51A so as to prevent the film winding knob 51 from rotating in the opposite direction of winding. It has become.

By pressing the release button 25 of the front cover 20, a release button pin 25A implanted on the back of the release button 25
Operates in the direction of arrow A. That is, the front cover 20
When the camera is attached to the camera body 10,
By the operation of the tip of the release button pin 25A in the direction of arrow A described above, the hoisting stopper 57 rotates counterclockwise against the spring force of the hoisting stopper spring 58. Then, the arm portion of the charge lever 61 is moved from the end surface of the arm portion 57A of the hoisting stopper 57.
The edge of 61A is disengaged and the charge lever 61, and thus the cam stopper 62, is rotated counterclockwise by the spring force of the charge lever spring 64.

When the charge lever 61 is opened counterclockwise by the spring force of the charge lever spring 64 stronger than the sector spring 67, the charge lever 61 is opened.
C hits the rising portion 65B of the sector lever 65 and comes off the rising portion 65B. Therefore, the sector lever 65 rotates clockwise around the pin 18B in the long groove of the sector lever against the tensile force of the sector spring 67, and
It returns to its original state due to the tensile force. Therefore, the sector drive pin 65A
Turns the sector 66 around the sector pin 18D, exposes the film, and closes it.

On the other hand, the cam stopper 62 also rotates counterclockwise together with the charge lever 61 as described above.
The projection 62D of 62 comes out of the groove 55A of the cam 55. Therefore, even if you stop pressing the release button,
The arm 57A of the charge lever 61 is urged clockwise by the spring force of the hoisting stopper spring 58.
The V-shaped projection at the end of the hoisting stopper 57 does not lock the ratchet gear 51A of the hoisting knob 51. Therefore, the next film winding can be performed.

Next, the film counter mechanism will be described.

As described above, 72 engages with the V-groove 56A provided at the upper end of the cam shaft 56 implanted in the cam 55 which rotates integrally with the sprocket gear 54, so that the film is wound up by one frame and the cam shaft Reference numeral 56 denotes an index gear that rotates clockwise by one tooth for each rotation.

On the upper surface of the index plate gear 72, an index plate 71 is printed as an integrally formed product, and the remaining number of shootable films is displayed from the film counter window 26 on the upper surface of the front cover 20.

A projection 72A is provided on the lower surface of the index plate gear 72. When the film is wound next after a predetermined number of frames have been photographed, the projection 72A is brought into contact with the projection 61 of the charge lever 61.
E and another projection 62 </ b> E of the cam stopper 62. Then, the protruding portion 72 </ b> A is
The film is wound up by one frame by entering between E and 62E, and even when the cam 55 rotates once and the charging of the sector is completed, the two projecting portions 61E and 62E are brought into contact with the projecting portion 72A of the index wheel gear 72. The movement is blocked, the charge lever 61 cannot be operated, and the protrusion 62D of the cam stopper 62 is also in the groove of the cam 55.
You will not be able to jump into 55A. The arm portion 57A of the hoisting stopper 57 abuts on the end surface of the arm portion 62A of the cam stopper 62 by the spring force of the hoisting stopper spring 58, and the V-shaped protrusion at the tip of the hoisting stopper 57 locks the ratchet gear 51A. Also, it is impossible to operate the charge lever 61 to open and close the sector to expose the film.

As described above, in the present embodiment, when two frames of the film are fed, the index plate gear 72 rotates by two teeth, and this rotation causes the protrusion 72A of the index plate gear 72 to rotate.
The charging lever 61 is
Movement of the cam stopper 62, but another projection 62E of the cam stopper 62.
It comes out of the. Therefore, the projecting portion 62D jumps into the groove 55A of the cam 55, the locking of the winding stopper 57 is released, and the locking of the winding knob 51 by the winding stopper 57 is performed, so that the film cannot be wound. Since the movement of the charge lever 61 is blocked as described above, the film cannot be exposed. In this way, the tongue at the leading end of the film is prevented from being caught in the patrone, and the tongue of the required length is secured. Therefore, in order to make the camera compact, there is no problem in drawing out the film from the patrone at the time of development even if a patrone having a small outer diameter is used.

FIG. 5 is a diagram showing removal of the film from the camera. As described above, in FIG.
The hole 30C is provided with the nail 10K of the camera body 10 and the back cover 30 shown in FIG.
The hooks 30A and 30B of the camera body 10 are engaged with the locking portions 10H and 10J of the camera body 10, and a sharp screwdriver-like fitting with a sharp tip is inserted into this hole or the engaging portion between the locking portion and the nail. This engagement is disengaged, the engaging portion between the other hole of the back cover 30 and the other claw of the camera body 10 is kept as it is, and the back cover 30 is bent from the groove 32 of the back cover 30 so that the back cover 30 is in the state of I. To the state of II. The portions of the engaging portions corresponding to the claws 30A and 30B may be disengaged by removing 30C. In this embodiment, the nail
To bend the back cover as shown in the figure with the claws of 30A and 30B, lift the back cover side of the patrone room and the
A and 30B are automatically disengaged from the locking portions 10H and 10J. However
As long as the 30C is not disengaged, it does not come off and plays a role of firming the camera during normal use. Then, the patrone P1 in which the photographed film with the tongue is entangled is taken out from the camera body 10 in the direction of the arrow B and sent to the developing laboratory (lab).

When the patrone P1 is taken out of the camera body 10 in a state in which the groove 32 of the back cover 30 is stopped due to the tongue, when the back cover 30 is sufficiently at the base (in this embodiment, the groove 321
That is, if the patrone can be taken out without being bent and opened from around the area between the image frame and the scroll chamber), the tongue is caught by the camera body 10 or the back cover 30 and cannot be taken out. If the patrone P1 is forcibly taken out in such a state, the photographed film in the patrone will be pulled out, and fogging will occur on the photographed film. For this reason, when taking out the patrone P1 from which the tongue comes out from the camera body 10, the groove 32 of the back cover 30 opens and bends the back cover 30 sufficiently from the base, so that the tongue does not catch on the camera body 10 or the back cover 30. At a position where the cartridge P1 can be taken out. In the present embodiment, the patrone has a structure that cannot be taken out unless the back cover is bent and broken in this way, and the user can change the film without permission and cannot make a lens-fitted film unit that cannot maintain a predetermined or higher quality. I did it.

Here, the other reason why the groove is provided in the portion shown in FIG. 5 is that the flash battery E and the scroll chamber 15B are not opened and the spool S2 in the scroll chamber 15B,
There is an effect that the strobe battery E does not come off in the lab.

Further, the groove 32 of the back cover 30 is a groove for bending the back cover 30 as described above, and the grooves are linearly connected directly at the upper and lower light shielding ribs. And light leakage may occur.

FIG. 6 illustrates the shape of the groove of the back cover having the upper and lower light shielding ribs.

In FIG. 6, (d) is a view when the back cover 30 is viewed from the inside, (a) is a top view when viewed from the top, and (b) is (d).
(C) is a top view including a cross section taken along the line XX of FIG.
It is a top view including the YY cross section of the drawing of FIG.

As shown in the drawing of FIG.
The grooves 30 start from the upper groove 321 and the grooves 322 and 323 of the light shielding ribs 331 on the inner upper side, and the grooves 32 of the light shielding ribs 331 on the inner lower side.
4, the groove 325 and the groove 326 of the light-shielding rib at the lower part on the outside. Since the grooves 322, 324, and 326 of the light-blocking ribs are provided at positions shifted from other long grooves as shown in the figure, light rays cannot leak directly because the light rays cannot directly enter the film chamber. However, the back cover can be easily bent to form a possible groove.

As described above, it is also possible to release the cartridge by releasing the engagement of the engaging portion at one end of the back cover and bending the back cover to take out the patrone. For example, remove the part of the bottom plate provided at the lower part of the camera, the side wall of the camera, or the entire grip part covering the patrone of the camera, or break or break it, and make the outer shell part unusable again I just want to be. Non-manufacturers cannot provide replacement parts including alternative shells, and can guarantee quality.

Here, the groove for bending the back cover will be further described.

In this embodiment, the groove provided in the back cover is configured to be a fulcrum of bending. The location where the groove is formed is most preferably the above location, but it can also be provided between the patrone chamber and the image frame portion, or between the scroll chamber and the battery chamber.

In this figure, the back cover is locked to the main body by engaging portions (holes 30C) on the side of the back cover on the side to be removed (the patrone chamber side), and on the upper and lower surfaces of the back cover, slightly closer to the scroll chamber than the groove. The main body 10 is provided with engaging portions 10K, 10L, and 10M at corresponding portions of the main body 10.

The reason why the engaging portions 30D and 30E are formed closer to the scroll chamber than the groove is to allow the bending force to concentrate on the groove when the back cover is removed.

It should be noted that the engaged portions 10K, 10L, and 10M of the main body 10 (although the front cover 20 and the back cover 30 may be engaged in some cases) by attaching and detaching the back cover. It is necessary that the shape and the like be made firmly so as not to be deformed, and that it can withstand multiple reuses.

In addition, the engaging portion may be provided on the back cover on the battery chamber side (the side opposite to the patrone chamber). Then, after the patrone chamber side is disengaged, the patrone is developed in the laboratory. When the camera is returned to the manufacturer, the back cover is opened, and the back cover is unstable if it is engaged with the main body at only two places, 30D and 30E. Swings around the line connecting the two engaging portions, and the engaged portions (protrusions) 10L and 10M are easily damaged. Is also good.

When the back cover is bent by removing the engaging portion (30C) at one end, the back cover becomes inverted, but it does not break at the groove 32 even if several bending forces are applied. As described above, in this embodiment, polystyrene is used. Scraps on the back cover are scattered in laboratories, etc., preventing resource recovery from being troublesome.

As described above, the outer shell member, which is preferable as a replacement part other than the back cover, is a bottom plate on the lower surface of the camera. (About 25 mm x 25 mm) can be used as an outer shell member for taking out the patrone.
The small piece may be broken from another part and may be damaged, or the small piece itself may be damaged and removed.

As a replacement part, a small piece thereof may be used as a replacement part, or a back cover or a bottom plate member may be used as a replacement part.
According to the present invention, the present invention can be appropriately modified under the concept of the present invention.

If the center of the bend is located in the image frame portion, there is a risk that the back cover may be bent and come into contact with the rail surface when the back cover is bent, thereby deteriorating the next photographing quality. Therefore, the center of the fold should be on the scroll chamber side, escaping the image frame, and the length of the image frame (in the film feeding direction) should be 40 to 55 including the edge.
mm, length of patrone chamber (in film feeding direction) 18-30
The total length is preferably 58 mm to 85 mm. The position of the groove depends on the diameter of the patrone used, but in the case of the patrone (20.6 nm) as in the present embodiment, the position is closer to the patrone chamber side (open side) of the back cover.
Most preferably, it is provided at a length of about 70 mm.

Next, the reuse of the camera will be described.

As described above, it is possible to easily take out the photographed film by bending a part of the back cover from its groove. Therefore, the camera member is checked, a new unexposed film is loaded, and a new back film is loaded. If the lid is replaced and engaged with the main body, it can be reused, that is, used as a reuse camera.

In the present invention, the back cover is particularly used as an outer shell part as a replacement member. However, when the back cover is reused, the resin material, which is the material of the back cover, is apt to be scratched and the film passes through. Scratching the area will scratch the film. Therefore, the back cover is not suitable as a reusable member and is a good member to consider as a replacement member. Therefore, bend the back cover to take out the patrone, check the camera body and check the quality assurance, load the unused film as described above, and attach the new back cover to provide the user with it. That is to say.

[0083]

According to the present invention, light leakage does not occur.
You can form a groove in the back cover,
The present invention provides a film unit with a lens which can easily take out the cartridge and easily take out the patrone .

[Brief description of the drawings]

FIG. 1 is an external view of a film unit with a lens according to the present invention.

FIG. 2 is a development view showing a configuration of a film unit with a lens according to the present invention.

FIG. 3 is a perspective view of mechanisms such as a camera body and a front cover of the lens-fitted film unit according to the present invention as viewed from the rear side.

FIG. 4 is a perspective view of a film used for a film unit with a lens according to the present invention.

FIG. 5 is an explanatory view of taking out a patrone from a film unit with a lens according to the present invention.

6A and 6B are diagrams showing a groove shape of a back cover of the film unit with a lens according to the present invention, wherein FIG. 6D is a diagram of the back cover 30 viewed from the inside, FIG. () Is a top view including a cross section taken along line XX of the drawing of (d), and (c) is a top view including a cross section taken along line YY of the drawing of (d).

[Explanation of symbols]

 10 Camera body 17A Index 20 Front cover 30 Back cover 32,321,322,323,324,325,326 Groove 331 Inside light shielding rib 332 Outside light shielding rib 50 Film winding mechanism 60 Sector charging mechanism 70 Film counter mechanism F Film FN Film notch P1 Patrone

Continuation of the front page (56) References JP-A-63-226443 (JP, A) JP-A-3-196127 (JP, A) JP-A-60-138523 (JP, A) JP-A-49-101181 (JP) , A) JP-A-61-244525 (JP, A) JP-A-63-44440 (JP, A) JP-A-2-67545 (JP, A) Fully open Showa 64-30546 (JP, U) Really open show 62-99041 (JP, U) Japanese Utility Model Showa 62-116239 (JP, U) Japanese Utility Model Showa 59-138514 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G03C 3/00 G03B 17/04

Claims (1)

(57) [Claims] 1. A back cover that has an exposure unit for photographing and a film feeding unit and that keeps a film chamber including at least a patrone chamber loaded with a patrone light-tight in a film unit with a lens in which a film is built in advance. With
On the camera body side of the back cover, the camera body side
Light-shielding rib protruding in the direction, and a direction intersecting with the light-shielding rib
And formed at a position shifted by the light-shielding rib.
A film unit with a lens, characterized in that the film unit has a groove that allows the back cover to be bent .