JP2592220Y2 - 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 with a lens which has an exposure and film winding function and can immediately take a picture of a previously 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.

However, when the entire camera body is discarded as described above, for example, the camera body or the parts made of resin must be incinerated or discarded as it is in the soil, resulting in waste of resources and further disposal work. Also required a lot of effort. Therefore, a method of reusing the camera body after taking out the exposed film as reuse has been considered. However, since the film unit with a lens as described above has been discarded after photographing one film of the main body, the durability is also compared with a general camera.
It is manufactured with considerably low strength. However, the lens-fitted film unit manufactured in this way can sufficiently perform its function until several films are used.

[0004]

As described in the prior art, a film unit with a lens can reuse several films, but the film can be re-used on a large number of the film units with a lens. When performing the refilling operation, there is a possibility that refilling may be performed more than necessary times for reuse, and as described above, the durability exceeds the use limit of the camera body manufactured with low strength. When reused, there is a problem that a good use state of photographing cannot be maintained.

In order to solve the above-mentioned drawbacks, the present invention clearly displays the number of times of use in the camera body or on the back cover, and prevents the displayed codes and characters from being erased even when the film is packed. It is an object of the present invention to provide a display method.

[0006]

SUMMARY OF THE INVENTION The object of the present invention is to provide a camera body made of a plastic molded article on which a film winding mechanism, a sector charging mechanism, a film counter mechanism and a strobe unit are mounted, the film winding mechanism, a sector charging mechanism and the like. A film counter mechanism and a cover member made of a plastic molded product that covers the camera body where the strobe unit is exposed and constitutes the appearance of the camera. An unexposed film is previously wound in the scroll chamber of the camera body. A film with a lens that enables shooting immediately, and winds up the film one frame at a time in the cartridge in the cartridge chamber by winding up the film winding knob for each shooting, and removes the cartridge containing the film that has been shot after shooting is completed. Unity In the portion covered by the cover member is achieved by the lens-fitted photographic film unit, characterized in that symbols indicating the number of times of use by indelible ink.

[0007]

FIG. 1 shows the appearance of a lens-equipped film unit of the present invention (hereinafter also referred to as a camera). The camera is provided with a 35 mm film (J135) loaded in advance, and after the photographing is completed. The film is sent to a developing station with the film stored in the camera without rewinding, the film is taken out from 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 removal of the photographed film can be easily performed only 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 removed by the manufacturer. If replaced, it can be reused.

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

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

The camera is provided with a cardboard carton (paper cover) on which a product name and a simple usage method 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 strobe unit that is a built-in strobe light emitting device. These are the film winding, sector charge and film counter mechanisms, respectively.

When the camera body 10 is used alone, the film winding mechanism 50, the sector charging mechanism 60, and the members constituting the film counter mechanism 70 are mounted, and a shutter case 11 for accommodating a sector is mounted.

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 a single lens having a focal length f = 30 mm is provided, and a slide 13A is engaged 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 guide pins 10B and 10C on the front of the camera body 10, respectively.

The strobe unit 40 is composed of AA batteries serving as a strobe charging power source, in which the upper and lower battery contacts 41 are inserted into the upper and lower slit holes 10D of the camera body 10 and protrude into the battery chamber on the back of the camera body 10. A certain battery power supply 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 finder objective lens 21 is dropped on the front surface of the front cover 20 and fixed by engaging the decorative cover 22. The decorative cover 22 has a guide pin 22A and four claws 22B protruding from the rear surface thereof.
It is engaged with the locking portion 20B at the location and is attached.

The front cover 20 is further mounted on 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, a claw 10F, and a locking portion 10G on the entire surface of the camera body 10, respectively. Engage and attach.

The engagement of the front cover 20 with the camera body 10 fixes the lens holder 13 and the flash unit 40 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 other end of the film F is locked on a spool S1 in the patrone P1, and even if the film in the patrone 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 position of the film F on the light-shielding focus surface is regulated.

The back cover 30 has claws 30A and 30B on its front surface and locking holes 30C and 30D on its side surface.
The claw 30A and 30B are the locking parts of the camera body 10
One holes 30C and 30D and one hole (not shown) are engaged with and fixed to the hooks 10K and 10L of the camera body 10 and one hole (not shown) at 10H and 10J.

After the back cover 30 is mounted, a predetermined film winding operation is performed to set an image-capturable screen, and the screen is completed by mounting the carton shown in FIG.

Next, the 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.

The camera body 10 has a patrone chamber 15 as two storage chambers for film winding and film loading in the same plane on both sides of a screen frame 16 as an exposure unit.
A and a scroll chamber 15B are provided, and J135 is caught in a patrone P1 which is a storage container shown in FIG.
The film F is to be loaded.

The film F used in the camera of the embodiment is a roll film J135 or a slightly thin roll film of 130 to 140 μm, like a general camera, and a spool of the cartridge P1 previously stored in a dark room or the like using the cartridge as a storage container. The end portion is fixed to S1, and a predetermined number of frames are wrapped in a length that can be photographed, and a film of a certain length comes 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. The film notch FN has a number of holes formed in the tongue portion at the leading end of the film to indicate the emulsion lot number and the like of the film.

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 the film winding device, and the entire film F (with the other end not being detached from the spool S1 of the cartridge P1) is moved to the scroll chamber 15B.
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.

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

In the camera body 10, 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 up 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, and 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 a rotation axis, and the rising portion 65B of the sector lever 65 is rotated by the triangular ketobashi 61C provided on the charge lever 61.
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, the 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.

When the release button 25 of the front cover 20 is pressed, 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.

Then, the counterclockwise rotation of the charge lever 61 by the spring force of the charge lever spring 64 stronger than the sector spring 67 causes the charge lever 61 to rotate.
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 portion 57A of the charge lever 61 is urged clockwise by the spring force of the hoisting stopper spring 58.
Is stopped by the end face of
The projection 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. Reference numeral 56 denotes an index gear that rotates clockwise by one tooth for each rotation.

An index plate 71 is printed on the upper surface of the index plate gear 72 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 platen gear 72, and when the film is wound up 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 protrusion 62 </ b> E of the cam stopper 62, so as to break and enter. Then, the protruding portion 72A is connected to both the protruding portions 61.
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 projection 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 film are fed, the index plate gear 72 rotates by two teeth. With this rotation, the projecting portion 72 of the index plate gear 72 rotates.
A is a charge lever that presses the protrusion 61E.
The movement of 61 is prevented, but another protrusion 62 of the cam stopper 62
It comes out of E. Therefore, the protrusion 62D
Jumps into the groove 55A of the cam 55, the locking of the hoisting stopper 57 is released, the hoisting knob 57 is locked by the hoisting stopper 57, and 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 cartridge, 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.

The above is an explanation of the overall structure and operation of the film unit with lens of the present embodiment.

In the present invention, when the photographing is completed and the photographer requests the development and printing of the film F together with the film unit with the lens through a camera shop or the like, the carton shown in FIG. 5A, the back cover 30 is opened to open the back cover 30 only through the groove 301 for bending, as shown in FIG. Then, only the cartridge P1 on which the film F has been wound is taken out from the cartridge chamber 15A of the camera body 10, and the developing process and the printing process are performed. After performing the above processing, the camera unit 10 is returned to the manufacturing location of the lens-fitted film unit with the back cover 30 attached. As shown in FIG. 5 (a), [1]
Symbol 30D is recorded. The symbol [1] is stamped with commonly used immortal ink and recorded so that it cannot be easily erased.

That is, if the symbol 30D of [1] is described on the back cover, it will be known at the place of production that this lens-equipped film unit has completed one shot. Next, all the back lids 30 on which the symbol 30D of [1] is described are removed,
The scroll chamber 15B of the camera body 10, is inserted a spool S ₂ as shown in FIG. 2, to insert the cartridge P1 to one of the cartridge chamber, displaying the symbol 30E in [2] shown in FIG. 5 (b) Attach the back cover 30. This symbol 30E indicates that the camera body 10 is to be used for the second time at the next development. Then, the back cover 30 is fixed to the camera body 10,
Covering the carton shown in FIG. 1 completes film mounting.

FIG. 6A shows a scroll chamber of the camera body 10.
The symbol 101 of [1] is displayed on 15B. In this case, the symbols 30D and 30E of the symbols [1] and [2] of the back cover 30 and the camera body 10 are originally assembled to correspond to each other. ], The number of times the camera body 10 has been used can be accurately known. The symbol 101 is also recorded with immortal ink so that it does not disappear easily due to the movement of the film F or the like.

[0060] FIG. 6 (b) performs when mounting the second film F in the camera body 10 used in one shot, before the scroll chamber 15B to insert the spool S ₂ of the next film F [1] in the scroll chamber 15B
Recorded with indelible ink symbols 102 [2] under the symbol 101, then insert the spool _{S 2} to the scroll chamber 15B. Next, the symbol 30E of [2] shown in FIG.
Is attached to the camera body 10 to complete the new loading of the film F. For the second and subsequent use, if the back cover 30 on which the symbol [3] is recorded is prepared, it can be used similarly. Also, the symbols 30D and 30E of the back cover 30 made of immortal ink and the symbols 101 and 102 of the camera main body 10 shown in the embodiment of the present invention are represented by numbers according to the number of times of use of the camera, respectively. Change circle mark 1
Or two dots may be displayed instead of the symbol [2]. In this embodiment, the number of times of use is provided on both the camera body 10 and a part of the back cover 30. However, it is a matter of course that the above-mentioned symbol may be recorded only on the camera body 10.

[0061]

[Effect of the Invention] Since the present invention is configured as described above, a method of reusing only a usable portion as a reuse portion without discarding a film unit with a lens in one photographing as it is is adopted. Since the number of times of use can be accurately known, it is possible to make the most of the camera body 10 of the lens-equipped film unit in particular, and it is possible to sufficiently take an initial photograph even in a plurality of uses. Since the same shooting operation can be performed and immortal ink is used as a display method indicating the number of uses,
While working at the manufacturing site for reuse, the display disappeared unexpectedly and the work was not confused, making it possible to refill the film for accurate reuse.

[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 each mechanism 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 in the film unit with a lens according to the present invention.

FIG. 5 is a perspective view showing a back cover of the film unit with a lens according to the present invention.

FIG. 6 is a perspective view showing a camera body of the film unit with a lens according to the present invention.

[Explanation of symbols]

 10 Camera body 10K Claw 15A Patrone room 15B Scroll room 16 Screen frame 30 Back cover 30C Hole 32 Groove P1 Patrone 30D, 30E Symbol on back cover 301 Folding groove 101, 102 Symbol on camera body

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP 6-85068 (JP, B2) (58) Fields investigated (Int. Cl. ⁶ , DB name) G03C 3/00

Claims (1)

(57) [Scope of request for utility model registration] 1. A camera body comprising a plastic molded article having a film winding mechanism, a sector charging mechanism, a film counter mechanism, and a strobe unit mounted thereon, and the film winding mechanism, a sector charging mechanism, a film counter mechanism, and a strobe unit being exposed. And a cover member made of a plastic molded product that covers the camera body and constitutes the appearance of the camera. In a film unit with a lens, the film is wound one frame at a time into a cartridge in a cartridge chamber by a winding operation of a film winding knob, and after the photographing is completed, the cartridge in which the film that has been photographed is taken out is taken out. The portion dividing, the lens-fitted photographic film unit, characterized in that symbols indicating the number of times of use by indelible ink.