JPH07114147A - Film unit with lens - Google Patents

Abstract

PURPOSE:To smooth and stabilize a film winding mechanism, a shutter charge mechanism and an index disk driving mechanism, etc., which are the main mechanisms of film unit with lens, to simplify and miniaturize the mechanism and to improve the assembling workability of a camera. CONSTITUTION:In this unit in which a roll photographic film is previously loaded and which is constituted of the film winding mechanism, a lens shutter unit, a finder part, a unit main body and a back cover 30; a reverse rotation preventing pawl part 53 capable of being locked in a ratchet gear 51A for winding film of the film winding mechanism and having elasticity is formed integrally with the unit main body, and a projection part 30A integrated with the back cover 30 is provided on the back part side of the pawl part 53, then the elasticity of the pawl part 53 is regulated by the projection part 30A. A rib for stopping film winding by the film winding mechanism and holding a part of a cam shaft for driving an index unit is provided at a part of the back cover 30 or a part of the unit main body.

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 (film-integrated type) having an exposure function for filming and a film winding function and capable of immediately taking a picture of an unexposed film loaded in advance. Camera).

[0002]

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

The above-mentioned film with lens is purchased and used when it is desired to take a photograph when the camera is not carried, and it is widely sold in film stores and the like.

In addition, although cameras are often purchased and used on the go, such as during travel, it is difficult to say that they are convenient to carry, and in general, they are equipped with a photographing lens of f = 35 mm and have an outer shape of 110 mm.
It was about mm x 60 mm x 35 mm, and it was inconvenient because it could not fit in the chest pocket of the shirt.

[0005]

However, even though it is said to be a "shooting-only camera", the camera function has been enhanced as in the case of a film unit with a lens having a built-in stroboscopic light emitting device due to the recent diversification of shooting purposes. There is a tendency that the cost is rising and the camera size is increasing.

Further, from the idea of reusing resources, it has been demanded that the "shooting-only camera" be a reusable camera, that is, a reuse camera.

As a result of solving these problems and improving the present invention, as a result of simplifying the mechanism of the camera, speeding up the assembling work, and utilizing the space, it is possible to suppress an increase in cost and an increase in size of the camera. An object of the present invention is to provide a thin film unit with a lens, which can be reused only by exchanging members and which facilitates a film loading operation.

[0008]

The above object is to provide a film unit with a lens, which is preloaded with a roll-shaped photographic film, and which comprises a film winding mechanism, a lens shutter unit, a finder section, a unit body, and a back cover. A reverse rotation preventing claw portion having elasticity and capable of being locked to the film winding ratchet gear of the winding mechanism is integrally formed with the unit body, and on the back side of the reverse rotation preventing claw portion,
The present invention is achieved by a lens-equipped film unit, characterized in that a protrusion that is integral with the back cover is provided, and the elasticity of the reverse rotation preventing claw is regulated by the protrusion.

Further, the above-mentioned object is characterized in that a rib for holding a part of the film winding stop and the indexer driving cam shaft of the film winding mechanism is provided in a part of the back cover. It is achieved by an attached film unit.

Further, the above object is characterized in that a rib for holding a part of the film winding stop and the indexer driving cam shaft of the film winding mechanism is provided in a part of the unit main body. It is achieved by an attached film unit.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an external view of a lens-equipped film unit (hereinafter also referred to as the present camera) of the present invention. This camera is provided with a 35 mm film (J135) pre-loaded, and after the completion of shooting. Without rewinding, the film is stored in the camera and sent to a developing station for film development and printing.

The unexposed film used in this camera is loaded in a cartridge, and after the camera is kept in a light-tight state, the winding shaft on the film winding chamber side is driven to drive the film inside the cartridge. Wind all the film into the film winding room.
The user rolls up the film that has already been photographed into the cartridge by winding it up each time the photograph is taken. Therefore, in the photo lab, the photographed film can be taken out from the camera in the bright room without changing the cartridge.

Further, the taken film can be easily taken out by bending a part of the back cover. Therefore, the camera member is checked and a new unexposed film is newly loaded to put the back cover on the manufacturer side. If replaced, it can be reused, that is, used as a reuse camera.

As the cartridge loaded in this camera, a cartridge having an outer diameter of φ20.6 mm, which is different from the cartridge (JISK7528) which is generally used, is used.

As a result, the total thickness of the camera can be suppressed to about 24 mm except for the lens barrel portion having the taking lens, and an ultra-thin compact camera is realized.

The camera is provided with a cardboard carton on which a product name, a simple method of use, etc. are displayed on a part of its outer surface.

FIG. 2 is a development view showing the structure of the camera.

Reference numerals 10, 20 and 30 denote a camera body, a front cover and a back lid, which are main components of the camera, respectively, and 40 denotes a built-in strobe unit, and 50 and 50.
Reference numerals 60 and 70 respectively denote a film winding mechanism, a sector charge mechanism and a film counter mechanism.

When the camera body 10 is used alone, each member constituting the film winding mechanism 50, the sector charge mechanism 60, and the film counter mechanism 70 is mounted, and the shutter case 11 which houses the sector is mounted.

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

Further, on the front surface of the shutter case 11, a photographing lens 12 having a focal length f = 30 mm and a diaphragm of F9.5 is dropped, and a slit 13A for engaging with a guide pin 11B is provided. It is covered by the lens holder 13.

The camera body 10 and the shutter case 11 described above
Is made of 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 substrate which engage with the guide pins 10B and 10C on the front surface of the camera body 10, respectively.

The upper and lower battery sections 41 integrated with the strobe unit 40 are inserted into the upper and lower slit holes 10D of the camera body 10 and projected into the battery chamber on the back side of the camera body 10 to form an AA battery E as a strobe charging power source. To pinch.

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

The above lens retainer 13 and strobe unit
The fixation and integration of 40 to the camera body 10 is completed by mounting the front cover 20 to the camera body 10.

Prior to mounting the front cover 20 on the camera body 10, an objective lens 21 of a finder is dropped in front of the front cover 20 and is fixed by engaging a decorative cover 22. The makeup cover 22 has a guide pin 22A and four nails 22B on the back surface.
The front cover 20 and the holes 20A and 4 on the front of the front cover 20, respectively.
It is attached by engaging with the locking portion 20B at the location.

The front cover 20 is mounted on the front surface of the camera body 10 after the eyepiece lens 23 of the finder is engaged and mounted on the rear surface.

The front cover 20 is provided with a hole 20C, a claw 20D and three locking portions 20E on the back surface, and each of them is provided with a guide pin 10E, a claw 10F and a side locking portion 10G on the front surface of the camera body 10. It is attached by engaging.

By engaging and mounting the front cover 20 on the camera body 10, the lens retainer 13 and the strobe unit 40 are fixed to the camera body 10.

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

The other end of the film F is locked to the spool S1 in the cartridge P1. 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 to the spool S1. Therefore, it can be rolled up in the cartridge P1 every time the photographing is completed.

A back cover 30 is attached to the back surface of the camera body 10 in which the film F is loaded so that the film F is protected from light and the focus surface position is restricted.

The back cover 30 is provided with claws 30A and 30B on the front surface thereof and locking holes 30C and 30D on the side surfaces thereof.
When attaching to the camera, the nails 30A and 30B are the locking parts of the camera body 10.
On the 10H and 10J, the holes 30C and 30D are the nails 10 of the camera body 10.
It is fixed by engaging K and 10L.

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

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

FIG. 3 is a perspective view of each of the above mechanical parts as seen from the back side of the camera, and FIG. 4 is a view of the cartridge P1 in which the film F is wound and the spool S2 from the side in which the camera body 10 is inserted. It is a perspective view.

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

The film F used in the present camera of this embodiment is a roll film J135 or a slightly thin roll film having a thickness of 130 to 140 μm, which is the spool of the patrone P1 in a dark room or the like in advance as a container for accommodating the roll film J135 and a slightly thin roll film. The end portion is fixed to S1 and the film is wound up for a predetermined number of frames so that the film can be photographed, and a film having a certain length is taken out from the film outlet of the cartridge P1. The film F in this state will be loaded into this camera. The loading method will be described below.

The cartridge P1 is loaded in the cartridge chamber 15A so that the spool S1 of the cartridge P1 is engaged with the forked portion of the hoisting fork 52. On the other hand, the spool S2 is also inserted in the scroll chamber 15B. Then, in the present embodiment, the film F is pulled out until the tip of the film notch FN of the film F is aligned with the index 17A on 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 to form the film F. The perforation P is locked to the claw H. The film notch FN is designed to indicate the emulsion lot number of the film by means of several holes provided in the tongue portion at the tip of the film.

Next, the back cover 30 is covered and the cover is made light-tight.
Then, the main camera in this state is attached to a special tool which is a film winding device, and the entire film F (however, the other end does not separate from the spool S1 of the cartridge P1) is wound onto the spool S2 of the scroll chamber 15B and the film is wound. Will be loaded. That is, by loading the film F in this way, the film F is sequentially wound into the patrone P1 for each shooting, and after the shooting of a predetermined number of images is finished, in the present embodiment, two frames are fed in a blank. The film F, which has been photographed, is wound into the cartridge P1 while leaving the required length without the leading end of the film F being wound into the cartridge. Therefore, this cartridge can be taken out from this camera in a bright room.

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 charge mechanism 60,
The main mechanism of the film counter mechanism 70 is incorporated therein.

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

Reference numeral 51 is a film winding knob, and the film F loaded as described above is wound up by rotating the film winding knob 51 counterclockwise. A film winding stop cam 55 having a fan-shaped cam portion 55B at the lower portion, which is coaxial with the sprocket gear 54 having eight teeth and which meshes with the perforation P of the film F, is configured to rotate exactly one counterclockwise by winding the film. It has become.

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

Due to the counterclockwise rotation of the cam 55, as described above, the shutter charging fan-shaped cam portion 5 is naturally used.
5B also rotates counterclockwise, and in the process of fan-shaped cam 55B.
Causes the charge lever 61 to rotate in the clockwise direction against the spring force of the charge lever spring 64 that urges the charge lever shaft 63 in the counterclockwise direction about the rotation axis of the charge lever shaft 63. As a result, the rising portion 65B of the sector lever 65 is pressed, and eventually the riding portion 65B is overcome to charge the sector charge mechanism as shown in the figure.

Pin 65C of the sector lever 65 and the camera body 10
A sector spring 67 is stretched between the pins 18C provided in the sector lever 67, and the tensile force of the sector spring 67 causes the sector lever 65 to
The left end of the long hole is brought into contact with the pin 18B provided on the camera body 10 which guides the long hole of the slot slidably and rotatably, and the sector lever
Pin 18 provided on camera body 10 with arm plate 65D provided on 65
It comes in contact with E. Further, a sector drive pin 65A for operating the sector 66 pivotally supported by the sector pin 18D provided on the camera body 10 is inserted in the forked portion of the sector 66.

As will be described later, the cam stopper after the shooting is completed.
The projecting portion 62D of 62 is removed from the groove portion 55A of the cam 55,
The arm portion 57A of the hoisting stopper 57 changes from the state shown in the drawing to change the arm portion 61A of the charge lever 61 and the arm portion of the cam stopper 62.
The edge of the arm portion 61A is abutted against the end surface of the arm portion 61A by the spring force of the hoisting stopper spring 58 which is offset from each edge of the arm portion 62A and urges clockwise. Then, as the film is wound up, the cam 55 rotates exactly once as described above, and the groove portion 55 of the film winding stop cam 55.
When A returns to the initial position, the projection 62D of the cam stopper 62 jumps into the groove 55A by the spring force of the charge lever spring 64 that urges the cam stopper 62 in the clockwise direction by the horizontal portion of the tip. By this jumping operation, the lock of the arm portion 57A of the hoisting stopper 57, which was locked at 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 tip of the winding stopper 57 is released by the release of the locking, and the spring force of the winding stopper spring 58 causes the ratchet to rotate. It jumps into the tooth space of the gear 51A and prevents 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 further winding rotation.

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

By pressing the release button 25 of the front cover 20, the release button pin 25A is planted on the back surface of the release button 25.
Operates in the direction of arrow A. That is, the front cover 20
When the is attached to the camera body 10, the hoist knob
51 By the operation of the tip of the release button pin 25 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, from the end surface of the arm portion 57A of the hoisting stopper 57, the arm portion 61 of the charge lever 61
The edge of A 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, which is stronger than the sector spring 67, causes the charge lever 61 to move in the above-mentioned direction 61.
C hits the rising portion 65B of the sector lever 65 and then 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 the sector spring 67
It returns to its original state due to the pulling force of. Therefore, sector drive pin 65A
Will rotate the sector 66 around the sector pin 18D to expose the film F and then close it.

On the other hand, the cam stopper 62 also rotates counterclockwise together with the charge lever 61 as described above,
The projecting portion 62D of 62 is the groove portion 55A of the cam 55 for stopping film winding.
I will get out more. Therefore, even if the release button is not pressed, the arm portion 57A of the hoisting stopper 57 still has the hoisting stopper spring 58.
Although it is urged clockwise by the spring force of the charging lever 61, it is stopped by the end face of the arm portion 61A of the charge lever 61, and the V-shaped projection at the tip of the hoisting stopper 57 is ratchet gear 51A of the hoisting knob 51. Does not lock. Therefore, the next film winding can be performed.

Next, the film counter mechanism will be described.

As described above, 72 meshes with the V-groove cam 56A provided at the upper end of the cam shaft 56 planted in the cam 55 that rotates integrally with the sprocket gear 54, and the film F is 1
It is an exponential gear that rotates clockwise by one tooth for each rotation of the cam shaft 56 when the frame is wound up.

The index board 71 is printed on the upper surface of the index board gear 72 as an integrally molded product, and the remaining filmable number of the film is displayed from the film counter window 26 on the upper surface of the front cover 20.

A projecting portion 72A is provided on the lower surface of the exponential gear 72, and the projecting portion 72A is projected by the film winding 61 after the filming of a predetermined number of frames is completed.
It is designed to be inserted between the E and another protruding portion 62E of the cam stopper 62. Then, the projecting portion 72A is replaced by the two projecting portions 61.
By entering between E and 62E, the film F is wound up by one frame, and even if the cam 55 makes one rotation and the charging of the sector is completed, the both protrusions 61E and 62E are the protrusions 72A of the exponential gear 72. Therefore, the charge lever 61 cannot be operated, and the protruding portion 62D of the cam stopper 62 cannot jump into the groove portion 55A of the cam 55. The arm portion 57A of the hoisting stopper 57 contacts 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.

In this way, in the present embodiment, when two frames of film are fed in an idle manner, the index plate gear 72 rotates by two teeth, and this rotation causes the protrusion 72 of the index plate gear 72 to rotate.
A is the charge lever that holds down the protrusion 61E at all.
The movement of 61 is blocked, but another protrusion 62 of the cam stopper 62 is
It is designed to come off from E. Therefore, the protrusion 62D
Jumps into the groove 55A of the cam 55, the winding stopper 57 is disengaged, and the winding stopper 57 locks the winding knob 51, so that the film cannot be wound. Further, as described above, the movement of the charge lever 61 is blocked, so that the film cannot be exposed. In this way, the tongue at the leading edge 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, even if a cartridge having a small outer diameter is used, there is no problem in pulling out the film from the cartridge at the time of development.

The above-described lens-fitted film unit of the present invention makes it extremely easy for the manufacturer to load the film in a bright room, and the user can freely load the film from the viewpoint of quality assurance. It was designed so that it would not exist.

That is, the film unit with lens after photographing is gathered by the maker, and as described above, the film after photographing is bent on a part of the back cover, that is, the back cover is damaged, and the film having been photographed is caught. The Patrone will be taken out from the camera body. The film will be developed and printed at the photo lab. On the other hand, the camera from which the film was taken out will be checked from the manufacturer's side for camera function and performance to ensure quality assurance. After carrying out the above, in the same manner as in the case of the new camera in the bright room, the film reel is equipped with the patrone newly wrapped with the unexposed film and the new back cover is attached, as described above. It can be attached to a special tool and wound up on the spool in the scroll chamber for reuse, that is, it can be used as a reuse camera. In this way, the quality assurance of this camera is secured by the manufacturer.

Further, in this camera, as described above, the film is wound on the spool of the scroll chamber and loaded by the special tool which is the film winding device.
Even if you use a cartridge with an outer diameter of φ20.6 mm, which is thinner than the standard cartridge, you can easily load the film without complicating the mechanism. Therefore, the total thickness of the camera is 26 mm or less and the total height is 54 mm. The following miniaturization is possible.

FIGS. 5 and 6 are sectional views of the camera without the front cover, and FIG. 7 is a rear view of the camera without the back cover.

Ratchet gear of the film winding mechanism 50
The reverse rotation preventing claw 53 that meshes with the tooth portion of the 51A includes a base portion 53A, an elastic cantilever portion 53B, and a claw portion 53C, and is integrally molded with the camera body 10.

The claw portion 53C at the tip of the reverse rotation preventing claw 53 is
It is a resin-molded product that is cantilevered and protrudes from the base portion 53A, and the position of the claw portion 53C after molding easily fluctuates. Further, the claw portion 53C also changes depending on the environmental temperature and the like. For this reason, the engagement between the claw portion 53C and the tooth portion of the ratchet gear 51A becomes unstable, and film winding failure occurs.

According to the present invention, a protrusion is formed on the inner surface of the back cover 30.
30A is integrally formed, and the protruding portion 30A is arranged so as to be close to the back surface of the elastic cantilever portion 53B of the reverse rotation preventing claw 53 which is integral with the camera body 10. At the top of the protrusion 30A, the claw portion 53C surely meshes with the tooth portion of the ratchet gear 51A to prevent reverse rotation, and the forward rotation of the reverse rotation prevention claw 53, particularly, to pass over the tip of the film to wind the film. Elastic cantilever to allow
It is set with a predetermined gap from the back surface of 53B.

Next, the sprocket gear 54 that engages with the perforation of the photographic film F is fitted into the cam shaft 56 and is incorporated in the camera body 10. The cam shaft 56 is the camera body
It is pivotally supported in 10 fitting holes 10A. The cam shaft 56 has a V-groove cam 56A intermittently meshed with the index plate gear 72 at the uppermost portion, a cylindrical shaft portion 56B at the lower portion thereof, and a cam stopper at the lower portion thereof.
A film winding stop 55 having a groove 55A that engages with the protruding portion 62D of 62 and a shutter charging fan-shaped cam 55B that slidably contacts the arm 61B of the charge lever 61 are integrally formed. The outermost circumferences of the cam 55 and the fan-shaped cam 55B have the same outer diameter and are held by the arcuate side wall 19 of the camera body 10.

At the upper end of the cam shaft 56, the index plate gear 72 pivotally supported by the fitting shaft 10B of the camera body 10 feeds one tooth each time the V-groove cam 56A makes one rotation, so that it can be swung slightly. Is.

On the other hand, in the vicinity of the upper portion of the film pressing surface inside the back cover 30, a cam shaft pressing rib 30B is integrally molded and protrudes inward. The concave portion at the tip of the cam shaft pressing rib 30B is slidably in contact with a substantially semicircular portion of the shaft portion 56B of the cam shaft 56 to form a shaft portion 56B.
Hold rotatably. The concave portion of the cam shaft pressing rib 30B is set at a position where the V-groove cam 56A intermittently meshes with the exponential gear 72 and can swing and rotate.

The cam shaft pressing rib 30B has two leg portions projecting from the back cover 30, and the concave portion at the tip forms a thin elastic portion between both leg portions. When the index disk gear 72 rotates, its tooth tips press the outer circumference of the V-groove cam 56A to swing the cam shaft 56, so that the shaft portion 56B of the cam shaft 56 has a cam shaft pressing rib.
It is elastically supported in the recess at the tip of 30B. As a result, the sprocket gear 54 and the shutter charge fan-shaped cam 55
B, the film winding stop cam 55, and the V groove cam 56A are coaxially arranged, and the cam shaft 56 can rotate stably and smoothly.

FIG. 8 is a partial plan view showing another embodiment of the cam shaft pressing rib according to the present invention. This camshaft retainer rib 30
In C, one leg portion protrudes from the inside of the back cover 30, and a concave portion for holding a substantially half circumference of the shaft portion 56B of the cam shaft 56 is integrally formed at the tip of the leg portion. In this way, by supporting the concave portion by one leg in a cantilever manner, the concave portion can be
Since the cam shaft 56 can be flexibly pressed against the B to hold the cam shaft 56, the rotation of the cam shaft 56 becomes smoother.

Incidentally, the cam shaft pressing rib 30B with the both legs mentioned above.
Alternatively, attach the cantilevered cam shaft pressing rib 30C to the camera body.
It is also possible to provide it on the 10 side by integral molding or separate assembly.

[0073]

According to the present invention, the camera mechanism can be simplified and the space can be utilized to suppress the cost increase, and the camera can be made compact. Further, the film winding mechanism of the camera body, the shutter charge mechanism, and the index board drive mechanism can be achieved. A thin film unit with a lens that smoothly stabilizes the movements of the above has been provided.

[Brief description of 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 the configuration of a film unit with a lens based on the present invention.

FIG. 3 is a perspective view of each mechanism such as a camera body and a front cover of the lens-equipped film unit according to the present invention as viewed from the back side.

FIG. 4 is a perspective view of a film used in the lens-equipped film unit according to the present invention.

FIG. 5 is a sectional view of the film unit with lens according to the present invention, excluding a front cover.

FIG. 6 is another cross-sectional view of the film unit with lens.

FIG. 7 is a rear view of the film unit with lens without the back cover.

FIG. 8 is a partial plan view showing another embodiment of the cam shaft pressing rib according to the present invention.

[Explanation of symbols]

 10 Camera body (unit body) 12 Shooting lens 20 Front cover 30 Back lid 30A Projection parts 30B, 30C Cam shaft pressing rib 50 Film winding mechanism 51 Film winding knob 53 Reverse rotation prevention claw 53A Base 53B Elastic cantilever dye part 53C Claw 55 Film winding stop cam 55A Groove 55B Shutter charge fan-shaped cam 56 Cam shaft 56A V groove cam 56B Shaft 57 Winding stopper 58 Winding stopper spring 65 Sector lever 66 Sector F film

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kojiro Yoshida 1st Sakura-cho, Hino City, Tokyo Konica Stock Company In-house

Claims (3)

[Claims] 1. A roll of photographic film preloaded,
In a film unit with a lens, which comprises a film winding mechanism, a lens shutter unit, a finder portion, a unit body and a back cover, a reverse rotation preventing claw portion which can be locked to a film winding ratchet gear of the film winding mechanism and has elasticity. Is integrally formed with the unit main body, and a protrusion integral with the back cover is provided on the back side of the reverse rotation preventing claw, and the elasticity of the reverse rotation preventing claw is regulated by the protrusion. Film unit with lens, which is characterized by 2. A roll of photographic film preloaded,
In a lens-equipped film unit including a film winding mechanism, a lens shutter unit, a finder section, a unit body, and a back cover, a film winding stop of the film winding mechanism and a part of an indexer driving cam shaft are held. A film unit with a lens, wherein a rib is provided on a part of the back cover. 3. A roll of photographic film is preloaded,
In a lens-equipped film unit including a film winding mechanism, a lens shutter unit, a finder section, a unit body, and a back cover, a rib for holding the film winding stop of the film winding mechanism and a part of the indexer driving cam shaft. Is provided in a part of the unit body, and a film unit with a lens is provided.