JPH0548182Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a simple camera, such as a disposable camera, in which film is loaded by the manufacturer and the user only needs to take a picture immediately. be.

[Conventional technology]

Roll film J135 called 35mm film
(JISK7519) is stored in a cartridge for roll film J135 (JISK7528) in a light-tight state, and loaded into an appropriate camera for use.

On the other hand, one type of camera that uses the film takes pictures in sequence by repeating exposure and film winding operations, and after the shooting is completed, the film is wound around the winding shaft by operating a rewinding device. After rewinding the finished film into the cartridge, open the back cover and take out the cartridge.

In addition, in other types of cameras, after loading the film, the film is wound onto the take-up shaft before the shooting operation, and then the film is rewound frame by frame into the cartridge while shooting, and after shooting is completed, the film is wound onto the take-up shaft. , open the back cover and take out the cartridge.

In this way, in any of the above camera formats, as long as 35mm film is used, the user must feed the film back and forth within the camera.
For this reason, a film rewinding device was essential.

[Problem that the invention attempts to solve]

On the other hand, in recent years, disposable cameras that do not require the above-mentioned rewind device and are inexpensive have been proposed.
Although it has now been put into practical use, it uses a cartridge containing 110 type film, and the camera itself is an extension of that type of conventional camera. In the film of the above format, since the area of one frame is small,
Full-size screen (24mm) of 35mm film (hereinafter referred to as 135 type film or 135 film)
When comparing an image taken with a 36mm x 36mm image and an enlarged printed image, it is inevitable that the image will be inferior in terms of sharpness, graininess, etc.

In order to improve the above points, it is possible to make 135 film into a cartridge, but since the backing paper for light shielding cannot be removed, the efficiency of film storage is poor, and the film storage room requires a large volume. As a result, the external size of the camera becomes larger, and another problem remains that the disadvantages of the cartridge cannot be solved.

Furthermore, when considering the balance with the film processing apparatus, the following problems also exist.

It is well known that compact laboratory systems with no water washing and no piping are on the market because of their small footprint and ability to perform efficient processing even with a small number of plants. Particularly in the automatic film developing machine that constitutes such a system, one end of the 135 film protruding from the cartridge is connected to a shot leader, and the cartridge is held in a storage section provided in the film loading section. Although it has a certain shape, it is not configured so that cartridges can be handled in the same way.

This is because the main type of film used is 135 type film with cartridges, and compared to the amount used, there is no 135 type film in cartridge format, and the amount of 110 type film used in cartridge format is extremely small. This is mainly due to this.

Even if 135 type cartridges are used, we cannot expect the usage to increase unless the format of current cameras changes.In addition, in this current situation, it is difficult to expect that the automatic film processors in the above system will be compatible with cartridges. Even if you try to improve it, it is actually difficult.

An object of the present invention is to provide a new camera using 135 type film and a cartridge for 135 type film, which prevents the above-mentioned problems as much as possible.

[Means for solving problems]

The purpose of the above-mentioned purpose is to provide a resin-made storage chamber equipped with photographing mechanisms such as a film winding mechanism and a shutter charge mechanism, a storage chamber for storing 135 type film, and a cartridge storage chamber having a spool shaft to which one end of the film is locked. 1 unit, a second unit made of resin provided on the front side of the first unit, and a third unit made of resin provided on the back side of the first unit are integrated, and according to the shooting operation. The film winding mechanism is configured to sequentially store photographed film screens into the cartridge, and when the film winding mechanism is operated after photographing all effective screens, the other end of the film is stored in the cartridge. This is achieved by a film integrated camera characterized in that the film cannot be wound up before the other end of the film is stored in the cartridge so that the film remains in a protruding state from the cartridge.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS. 1 to 3.

The film F used in the camera of the present invention is a 135 type film whose container is a cartridge for roll film J135 like in general cameras.
It is arranged into the form shown in the figure by an appropriate method and then loaded into the camera.

That is, in a dark room or in a light-tight device, the film F, one end of which is fixed to the spool (film winding shaft) 2, is pulled out from the cartridge 1 to the maximum limit and placed in a light-tight container, for example, an empty cartridge 3. The entire length of the film is wound and housed in an unexposed state.

The end portion of the film F, indicated by a dashed line, is removably fixed by a locking claw (not shown) on a spool 4 provided in the cartridge 3.

Further, the cartridges 1 and 3 are maintained such that the distance 1 between the respective film drawer openings 1a and 3a is slightly larger than the screen frame size in the camera, which will be described later.

Note that instead of the cartridge 3, a special light-tight container may be prepared and used, for example, in which the spool 4 does not protrude outside the cartridge, or in which there is only a cartridge frame and no spool itself. When the cartridge 3 is used as a light-tight container, the spool 4 is inserted in the cartridge with the long axis side facing downward, as shown in Fig. 1, or with the long axis side facing upward. In this case, the vertical dimension of the camera can be reduced.

However, if the vertical relationship of the cartridge 3 is simply reversed, it will cause problems when both cartridges are loaded in the same plane (viewed from above) inside the camera, as shown in Figure 2, so the long axis It is also necessary to reverse the relationship of the film outlet 3a to the side spool. In other words, it is necessary to create cartridge 3 as a mirror image of cartridge 1. Further, this does not apply if there is no need to take the thickness of the camera body into consideration.

FIG. 2 shows an expanded version of an embodiment of the film integrated camera according to the present invention (however, the first illustrated parts such as the film and the light-tight container are omitted), and the reference numeral 10 indicates the camera body. It should be said that the first
The unit is equipped with a film winding mechanism, etc. 2
0 and 30 cover the first unit 10 and are inseparably connected to the second unit (hereinafter referred to as the front side outer frame) and third unit (hereinafter referred to as the rear side (sometimes referred to as the outer frame). All the units mentioned above are made of resin.

As used herein, the term "inseparable" means
It is used to refer to a mode in which the units are combined so that they will not separate unless unreasonable force is applied when the units are incorporated (combined) to form a camera.

The first unit 10 is provided with a cartridge chamber 11 and a light-tight container chamber 12 as two storage chambers for film winding and film loading in the same plane on both sides with a screen frame 13 serving as an exposure section in between. and placed in the storage container shown in Figure 1 above.
135 film F is now loaded.

Further, the first unit 10 includes a photographing lens 40.
, a film winding mechanism 50, a shutter charge mechanism 60, and a film counter mechanism 70.
Incorporates the main functions of

51 is a winding knob protruding from the outside of the camera; 52
and 53 are a ratchet wheel and a hoisting fork coaxially integrated with the hoisting knob 51, respectively. The winding fork 53 projects into the cartridge chamber 11, and is engaged with the spool 2 of the cartridge 1, which is loaded prior to completion of the camera.

54 is a 16-tooth sprocket gear installed so that its tooth tips are exposed on the rail surface 14, and 55 is a cam plate having a pair of step portions 55a and a drive pin 55b at symmetrical positions on the outer periphery of the sprocket gear 54. They are mounted on axis S-1 to rotate together.

That is, when the winding knob 51 is rotated counterclockwise in FIG. The cam plate 55 is driven to rotate counterclockwise via the cam plate 54.

The shutter charger 61 has two elongated holes 100 bored therein, and slides in the left-right direction on the upper surface of the first unit using a mounting pin 62 that fits into the elongated holes provided in the first unit 10 as a guide. It is a plate, and is always urged rightward by a tension spring 63.

As will be described later, the position of the shutter charge plate after the photographing operation is completed is shifted to the right side from that shown in the figure, but movement to the position shown (shutter charge position) is performed as follows.

That is, as the winding knob 51 rotates, the cam plate 5 is moved together with the sprocket gear 54 through the film.
5 rotates.

During the rotation, the pin 5 on the cam plate
5b engages with the projection 61a of the shutter charge plate, and moves the charge plate to the left in the figure against the tension spring 63, causing the cam plate to turn half a turn, that is, winding the film F by the equivalent of one screen. Before the desired amount of rotation is reached, the engagement between the protrusion 56' of the release plate 56 and the notch 61' provided at the right end of the shutter charge plate is completed. At that point, the pin 55b is in a position that does not prevent the protrusion 61a from moving rightward again. Reference numeral 64 denotes a stop lever having a substantially T-shape and loosely fitted to the shaft S-2 disposed at the intermediate point, and provided on the arm portion 64c extending across the upper surface of the shutter charge plate and the first unit. It is biased counterclockwise by a tension spring 65 disposed between the pin 101 and the pin 101. Stop lever 6
4 rotates clockwise as its arm portion 64c is pushed by a rising portion 61b provided on the charge plate while the shutter charge plate is moving to the right.

The tip of the middle arm 64a comes into contact with the step 55a of the cam plate 55 every time the film is wound by a predetermined amount, and in this state, the stop pawl provided on the other arm 64b engages with the ratchet wheel 52. ,
The winding operation of the winding knob 51 is prevented.

Figure 2 shows that the shutter charge is completed at the same time that the film F has been wound up for an amount equivalent to one screen, and the winding knob 5 is turned on.
1 shows the stopped state. In this state, when the release button 57 is pressed and the release plate 56 is pushed down, the shutter charge plate 61 is released from the lock and the shutter is moved to the right by the action of the tension spring 63. In the process, the pin 67a of the reversing member 67 provided at the tip of the shutter blade 66 is released by the falling portion 61c, and the shutter blade 66 is rotated clockwise, thereby changing the optical path of the photographing lens 40. Exposure is performed by opening the shutter.

Note that the shutter blade 66 is regulated by a tension spring 66a to a position where it blocks the optical path, so immediately after the optical path of the photographic lens 40 is fully opened, the shutter blade 66 is
When 7a disengages from the falling portion 61c, it automatically returns to the initial position and performs a predetermined instant exposure.

Further, when the shutter charge plate 61 moves to the right side, a portion of the shutter charge plate 61 is removed from the protruding portion 5 of the release plate 56.
6', and prevents movement of the release plate from returning to the upper initial position by a biasing means (spring) not shown.

That is, the front outer frame 20 is closed so that the release button 57 is not operated unless the film is being wound.
is maintained within the hole 28 provided in the. Reference number 2
Reference numeral 20 denotes a reverse rotation prevention pawl that prevents the winding knob 51 from rotating clockwise.

The number of remaining frames of the film F that can be photographed is indicated by an index board 71 of the film counter mechanism 70 displayed in the window 26 of the second unit 20. That is, a gear 72 fixed to the shaft of the sprocket gear 54 meshes with a gear 73 which is integral with the index dial 71 and has one fewer teeth than half the number of teeth of the gear 72, so that the sprocket gear 54 Every half rotation, the rotation stop position of the index board 71 is shifted by one tooth to sequentially decrease the indicated number.

The second unit 20 is attached to the front of the first unit 10 which incorporates the main functions of the camera in this way. After loading the film F contained in the storage container shown in FIG. 1, a third unit 30 corresponding to the rear outer frame is attached to the rear surface of the first unit to form the appearance of a camera.
The film F is kept in a light-shielded state.

That is, the second unit 20 and the third unit
The unit 30 is provided with protrusions 21 and 31 on the upper and lower sides of its left and right inner surfaces, and the first unit 10 is also provided with fitting holes 16 and 17 at positions corresponding to the respective protrusions. They are then press-fitted into one piece by being engaged with each other.

At the same time, the wall 22 formed continuously on the peripheral edge of the second unit 20 enters into the groove 32 continuously formed so as to face the peripheral edge of the third unit 30, thereby forming a light shielding wall. The film F is kept in a light-shielded state.

The external dimensions of the film-integrated camera having the above configuration are compact, about 120 mm in width, 55 mm in height, and 35 mm in depth.

The third unit 30 has a flat and smooth pressing portion 33 integrally formed on its inner surface.

The pressing portion 33 serves to maintain the flatness of the film F positioned between the rail surface 15 and the step between the rail surface 14 and the rail surface 14 .

coupling the second unit 20 to the first unit 10;
When integrating, the photographing lens 40 attached to the front part of the first unit 10 is attached to the second unit 2.
The release button 57 is attached to the release plate 56 through the hole 28 on the top surface of the camera. Further, the objective frame 29 opened in the second unit 20 is connected to the first unit 20.
The eyepiece frame 39 provided on the third unit 30 connected to the back of the unit 10 constitutes a simple direct-view viewfinder, and the completed camera has an appearance as shown in FIG. It turns out.

Furthermore, the front side outer frame 20 and the back side outer frame 3
0 has protrusions 24 and 34 of the same shape integrally molded on a part of the outer side on the patrone chamber 11 side to maintain surface contact with each other, and a long hole 25 provided therein.
A hanging cord or the like can be inserted through the holder and 35 so that it can be used as a holding part for the camera.

In the film integrated camera configured in this way, the user can move the unexposed film F to the position of the screen frame 13 by simply winding the film equivalent to two screens and performing an aerial shooting operation (pressing the release button 57). Parts can be pulled out and photographed.

When the above-mentioned film integrated camera is ready to take a picture, the camera takes a picture by pressing the shutter button 57, and by winding the winding knob 51 counterclockwise until it stops, one screen of the film F can be taken. The film feed, shutter charge, and film counter operations are performed, and the next frame is ready to be photographed.

In this way, the value displayed on the film counter index changes by 1 as the shooting and winding operations are performed.
For example, when 24 images have been taken, a message indicating that all the predetermined number of images have been taken is displayed.

The above is the user's actions, but after this, if the user or the processor continues to take several aerial shots, the effective screen will be all accommodated in the cartridge 1, and the edge of the film F will be located at the position indicated by the dashed line in Fig. 1. is reached and stopped. This state is easily confirmed by the release lock caused by the inability of the sprocket gear 54 to rotate.

The processor disengages the third unit 30 from the first unit 10 using a screwdriver or the like in a bright room, and takes out the light-shielded film F stored in the cartridge 1, which can be easily separated and destroyed. It is something that can be processed.

[Effect of idea]

This invention eliminates the need for a rewind device in cameras that use 135 type film, guarantees high image quality for enlarged prints, and allows users to cope with compact lab systems without having to make any changes. This also provided film processing companies with cameras that were easy to operate and work with.

[Brief explanation of the drawing]

FIG. 1 is an external view of the film used in the camera of the present invention. FIG. 2 is an exploded perspective view of an embodiment of the film integrated camera according to the present invention, and FIG. 3 is an external view of the camera. 1...Patrone, 3...Lighttight container, 10...
1st unit, 11... Patrone room, 12...
Lighttight container chamber, 16, 17... Fitting hole, 20... Second unit, 30... Third unit, 21, 31
... protrusion, 24, 34 ... protrusion, 33 ... pressing section, 40 ... photographing lens, 50 ... film winding mechanism, 60 ... shutter charge mechanism, 70 ...
Film counter mechanism.

Claims (1)

[Claims for Utility Model Registration] Comprising a photographing mechanism such as a film winding mechanism and a shutter charge mechanism, a storage chamber for storing 135 type film, and a cartridge storage chamber having a spool shaft to which one end of the film is locked. a first unit made of resin, a second unit made of resin provided on the front side of the first unit, and a third unit made of resin provided on the back side of the first unit, According to a photographing operation, the photographed film screens are sequentially stored in the cartridge by the film winding mechanism, and when the film winding mechanism is operated after photographing all effective screens, the film winding mechanism leaving the other end protruding from the cartridge,
1. A film-integrated camera, characterized in that the film cannot be wound up before the other end of the film is stored in the cartridge.