JPH0734091B2 - Film unit with lens - Google Patents

Description

The present invention relates to a container for accommodating a photographic film, more specifically, a film packaging container having a photographing function such as a photographing lens and a shutter (hereinafter referred to as "film with lens"). "Unit").

[Conventional technology]

Recently, a photo film is built-in so that you can easily take pictures even when you don't carry your camera, and a film unit with a lens that has a simple shooting function (for example, the product name "Sharan" )) Is commercially available. Such a film unit with a lens
There is no need for operations such as loading the film, rewinding the film after shooting, and taking out the film that has already been shot.
After shooting, if you submit it to a shop that handles development as it is, you can get negatives and prints after development.

However, since the lens-fitted film unit provided so far uses a 110 film with a cartridge, when the user wants to obtain a greatly enlarged print photograph, he is dissatisfied with the image quality. Against this background, a lens-fitted film unit having a built-in 135 film has been proposed. If you want to use a 135 film for the lens-equipped film unit, use a so-called patrone-laden 135 film, pull out the film from the patrone, and store it in the unit body in a roll state. Every time I shoot
It is convenient to roll the exposed film into the cartridge. According to this, when the exposed film is taken out from the used unit main body, it is not necessary to rewind the film, and furthermore, the film is not fogged carelessly at the time of taking it out.

[Problems to be solved by the invention]

However, in the case of using the 135 film as described above, in order to detect the one-frame feed of the film and apply the winding stop, the sprocket that is engaged with the film perforation and is driven is used, and 1
One frame must be indexed either by indexing frames or by electrically detecting the number of movements of perforations using a photoelectric detector such as a photointerrupter. Moreover, since the cartridge shaft is wound thicker as the film winding progresses, a slip mechanism must be provided between the winding operation section and the cartridge shaft even if any of the above-mentioned mechanisms is used. It will be complicated.

Such a film winding mechanism is a heavy burden on the cost as a mechanism to be incorporated in a unit body that is used as a disposable type, regardless of a general camera that is repeatedly used.

[Object of the Invention]

The present invention has been made in view of such a background, and while the unit main body contains, for example, a 35 mm film of the same size as the 135 film, the film winding mechanism is simplified to significantly reduce the cost burden. It is an object of the present invention to provide a film unit with a lens that can be used.

[Means for solving problems]

In order to achieve the above object, the present invention provides a main body of a lens-fitted photo film unit with a room for storing a film cartridge and a room for light-tightly storing a photo film drawn from the film cartridge. The one in which one perforation is formed is used for each frame, and this perforation is detected.

[Operation] According to the above configuration, when the film containing the cartridge loaded in the lens-fitted film unit is transferred by the feeding mechanism, a simple mechanism of indexing one frame by detecting one perforation by the sensor member, 35
It becomes possible to provide a lens-fitted film unit using a millimeter-sized film.

An embodiment of the present invention will be described below with reference to the drawings.

〔Example〕

A first embodiment of the present invention will be described with reference to FIGS. In the first embodiment, as shown in FIG.
This is a lens-fitted film unit 2 that uses a 35 mm-size film 12 in which a perforation 12a is formed for each frame interval of the shooting screen stored in 17. In FIG. 3 showing this appearance, a body 3 made by assembling a plastic molded product has a photographing lens 4, a finder window 5, a shutter button 6, a film winding winding knob 7, and a rotation circle for displaying a film counter. A plate 8 is provided and is covered by the outer case 1 with the printed indicators 14.

As shown in FIG. 4, an opening 3a is formed in the main body 3 from the bottom surface to the back surface, and a back cover 9 is attached so as to cover the opening 3a. A film roll chamber 10 and a cartridge chamber 11 are provided in the main body 3, and the film roll chamber 10 has a film roll 13 wound in a roll shape (fifth roll).
(Shown in the figure) is stored, and the cartridge 17 is stored in the cartridge chamber 11. The tip of the film 12 is fixed to a patrone shaft 19 provided in the patrone 17. As shown in FIG. 1, the film 12 is provided with one perforation 12a at every one frame interval of the photographing screen.

Between the film roll chamber 10 and the cartridge chamber 11,
A film receiving surface 21 that is curved so as to project toward the back lid 9 side is formed, and an aperture 22 for defining an exposure area for one frame of film is formed in the center thereof. A film regulating surface 23 corresponding to the curved surface of the film receiving surface 21 is integrally formed on the inner surface side of the back cover 9. When the lens-fitted film unit 2 is assembled, the film roll 13 and the cartridge 17 may be inserted from the axial direction in a dark room.

Then, as shown in FIG. 5, the winding gear 27 is engaged with the cartridge shaft 19, and the gear 7a integrated with the winding knob 7 is engaged with the gear 27 so that the film 12 is not flexed unnecessarily. After removing, the back cover 9 is attached to the main body 3. When the film 12 is curved at the exposure position in this way, even when a simple lens such as a single lens is used as the taking lens 4, good focus can be maintained without being significantly affected by aberration. become able to.

The operation of the hoisting mechanism shown in FIG. 5 is performed as follows. When the shutter button 6 is pushed down from the shooting standby state shown in FIG. 5, the shutter lever 32 rotates about the shaft 33 counterclockwise against the bias of the spring 34. This causes the lock lever 35 to rotate counterclockwise about the shaft 36. When the lock lever 35 rotates in this manner, the rising portion 35a formed in the middle portion thereof is disengaged from the locking portion 37a of the drive lever 37. As a result, the drive lever 37 is
By the bias of 8, the shaft 39 is momentarily rotated about the shaft 39 until it comes into contact with the stopper 40. In this process, the arm 37b of the drive lever 37 kicks off one end of the shutter blade 41 to rotate the shutter blade 41 counterclockwise about the shaft 42 against the spring 42.

When the arm 37b of the drive lever 37 rotates to a position where it abuts on the stopper 40, the arm 37b passes over the one end of the shutter blade 41, so that the shutter blade 41 is returned to the position shown by the biasing of the spring 42. Such shutter blades
During the reciprocating motion of 41, the photographing screen 12b defined by the aperture 22 on the film 12 by the light flux passing through the photographing lens 4.
Is exposed.

When the drive lever 37 is stopped by the stopper 40 in this way, as shown in FIG. 6, the rising portion 35a of the lock lever 35 rides on the tip of the locking portion 37, and the lock lever 37 Is held in its original position against the bias of the return spring 44. At this time, the lock claw 35b formed at the tip of the lock lever 35 is disengaged from the locking groove 7b formed on the outer periphery of the winding knob 7, so that the winding knob 7 can be rotated counterclockwise. Like In addition,
The locking groove 7b of the winding knob 7 has a non-return piece made of a leaf spring.
Since 49 is engaged, turning it clockwise is prevented.

By rotating the winding knob 7 counterclockwise, the film 12 is fed to the right. Then, the film 12 is caught in the cartridge 17. When the lock lever 35 is held at the position shown in FIG. 6, the protruding piece 35c of the lock lever 35 is the control lever 4 with which the sensor lever 30 is integrated.
It is retracted from the lower piece 45a of 5. Since the control lever 45 is supported by the shaft 46 via the long hole 45b, when the projecting piece 35c is retracted from the lower piece 45a as described above, the control lever 45 is moved by the spring 48 having a weak biasing force. Be moved to the side. As a result, the tip of the sensor lever 30 is
It will be lightly pressed against. At this time, the tip of the counter feed lever 45d provided on the control lever 45 comes into engagement with the teeth of the ratchet gear 50.

While the feeding of the film 12 progresses, the perforations 12b formed on the film 12 engage with the sensor lever 30. When the film 12 is further moved to the right, the control lever 45 is rotated clockwise from the position shown in FIG. 6 via the sensor lever 30. Thus the control lever 45
When is rotated, the counter feed lever 45d pushes one tooth of the ratchet gear 50 to rotate the ratchet gear 50 clockwise, and the rotating disk 8 for the film counter display mounted via the shaft 51 rotates. , Is indicated by the index 14 printed on the upper surface of the outer box 1 that covers the main body 3, and displays the number of shots. At the same time, the bent piece 45c of the control lever 45 rotates it counterclockwise via the arm 37c of the drive lever 37. As a result, the arm of the drive lever 37
37b passes over the lower end of the shutter blade 41 and returns to the position shown in FIG.

In this way, the drive lever 37 rotates counterclockwise from the position shown in FIG. 6, so that the rising portion 35a of the lock lever 35 is disengaged from the tip of the locking portion 37a of the drive lever 37, and the lock lever 35 returns. The spring 44 urges it to rotate to the position shown in FIG. As a result, the lock claw 35b at the tip of the lock lever 35 meshes with the locking groove 7b on the outer periphery of the winding knob 7,
The rotation of the winding knob 7 is blocked and the winding is stopped.
When the lock lever 35 rotates, the front edge of the protruding piece 35c presses the lower piece 45a of the control lever 45 and pushes the control lever 45 forward against the spring 48. This allows the counter feed lever 45
As d comes off the ratchet gear 50, the sensor lever 30 is pulled back and pulled out from the perforation 12b. As a result, each member constituting the winding mechanism and the shutter blade 41 are restored to the photographing standby state shown in FIG.

As described above, since the perforations are formed on the film 12 at the positions corresponding to the one frame intervals of the photographic screen, accurate one-frame indexing and unwinding can be performed by the simple film winding mechanism as described above. become able to.

Further, as described above, the film from the film cartridge 17 to the film 12 is previously prepared.
Not only for pulling out and using, but also as a film unit with a lens of the type that pulls out the film 12 from the Patrone 17 for each shooting and rewinds it, and rewinds it into the Patrone 17 after shooting all frames. can do.

Next, a second embodiment of the present invention will be described. In the second embodiment, as shown in FIG. 2, one perforation 60a is provided for each frame of the photographing screen stored in the cartridge 17.
Is a film unit with a lens that uses a film 60 of 35 mm size, which is formed by changing the position vertically, and the outline of the main part is shown in FIG.

The leading end of the film 60 is attached to the spool 64 and loaded into the main body. The shaft 65 of this spool 64 has a gear train
A gear 66 that is in mesh with 67 is attached, and a gear 70 that is in mesh with the gear 71 is in mesh with the patrone shaft 19 provided in the patrone 17. In the space between the end gear 72 of the gear train 67 and the gear 71, a movable gear 73 engaged with a gear 7a integrated with the winding knob 7 is arranged, and the movable gear 73 is rotatable with respect to the movable gear 73. The loosely fitted shaft 74 is restricted by a slit 75a formed in the plate 75.
Further, a lever 76 for moving the shaft 74 along the slit 75a is loosely inserted in the shaft 74.

The movable gear 73 is engaged with the end gear 72 of the gear train 67 while the number of shots of the film 60 is 1 to 12, and the gear train 67 and the gear 66 are rotated by rotating the winding knob 7 counterclockwise. Rotate spool 64 counterclockwise through. In accordance with this, the film 64 is wound on the spool 64 and transferred to the left. At this time, the lever 76
By the action of the rod-shaped lever 77 linked to
The sensor lever 80 of the two sensor levers 80, 81 provided in the is pushed out in the direction of the film 60, and its tip is pressed against the film 60.

While the film 60 is being fed, the perforation 60a formed on the upper side of the film 60 moves to the sensor lever 8
Engage 0. Then, when the film 60 is further transferred to the left, the control lever 85 is rotated counterclockwise via the sensor lever 80. When the control lever 85 is rotated in this way, the counter feed lever 85a formed integrally with the control lever 85 rotates about the shaft 46 to operate the film counter 90, and the display number of the number of shots is set to one. Advance by one sheet. At the same time, shutter charging, film winding lock and the like are performed in the same manner as in the first embodiment.

In this way, the spool 64 is driven and the cartridge shaft 19 of the cartridge 17 is rotated until the film counter 90 reaches 1 to 12.
The film 60 is photographed every other frame by repeating the above-described operation. When the film counter 90 reaches 12, the lever 76 rotates in conjunction with this, the movable gear 73 is retracted from the gear 72, and is moved so as to mesh with the gear 71. Also, the lever
The rod-shaped lever 77 interlocked with the 76 is pulled as the lever 76 rotates, and the control lever moves around the fixed shaft 88.
85 is rotated. Then, the sensor lever 80 retracts,
Instead, the sensor lever 81 is pushed out and the film 60
The tip of the sensor lever 81 is pressed against the surface of.

After the shooting of the 12th frame is finished, when the winding knob 7 is rotated counterclockwise as before, since the movable gear 73 meshes with the gear 71 as described above, the gears 7a, 73, 71 , 7
The winding shaft 19 of the cartridge 17 is rotated clockwise via 0 to start winding the film 60. At the same time, the spool 64 is driven as the film 60 is transferred to the right.

While the feeding of the film 60 progresses, the perforation 60a formed on the lower side of the film 60 moves to the sensor lever 8
Engage 1 And the film 60 is Patrone 1
When it is transferred to the right while being pulled in by the control lever 8,
5 is rotated clockwise about the shaft 46 via the sensor lever 81. When the control lever 85 is rotated in this way, the counter feed lever 85a formed integrally with the control lever 85 is rotated around the shaft 46 to operate the film counter 90, and the display number of the number of shots is reduced by one. Let go.

As described above, the unexposed frames are exposed for each frame when the spool 64 is driven, and all the frames are exposed. If you take this as it is to the development shop, at the photo lab where it was received, by further rotating the winding knob 7, the end of the film 60 attached to the spool 64 is disengaged, and the film 60 After the whole is stored in the cartridge 17, the main body is disassembled and the cartridge 17 is taken out. By doing so, the film can be taken out in the bright room.

After loading the film, set the film counter so that the first few frames can be skipped and the number of shots that can be taken will be the same as when taking out the film. You will be able to work in the bright room.

〔The invention's effect〕

As described above, according to the present invention, a 35 mm size film with a patrone in which perforations are formed at intervals corresponding to one frame feed amount is used in a film unit with a lens, and this perforation is detected by a sensor member. In addition to indexing the standard length of the film, the film feeding is stopped. Therefore, as compared with a device using a sprocket or a photo interrupter, a very simple film winding mechanism will be sufficient, and the cost of the lens-fitted film unit can be greatly saved.

[Brief description of drawings]

FIG. 1 is a schematic view of a film used in the first embodiment of the present invention. FIG. 2 is a schematic view of a film used in the second embodiment of the present invention. FIG. 3 is an external view of a film unit with a lens using the present invention. FIG. 4 is a rear side exploded perspective view of a lens-fitted film unit using the present invention. FIG. 5 is a perspective view showing a main part of a film winding mechanism used in the first embodiment of the present invention. FIG. 6 is an operation explanatory view of the film winding mechanism shown in FIG. FIG. 7 is a perspective view showing an essential part of a film winding mechanism used in the second embodiment of the present invention. 2 …… Film unit with lens 3 …… Main body 7 …… Winding knob 10 …… Film roll chamber 11 …… Patrone chamber 12,60 …… Film 13 …… Film roll 12a, 60a …… Perforation 17 …… Patrone 30, 80,81 …… Sensor lever 35 …… Lock lever 64 …… Spool 73 …… Movable gear

Claims (2)

[Claims] 1. A film unit with a lens, in which a photographing mechanism such as a photographing lens and a shutter is built in a unit main body accommodating a photographic film, and a film with a cartridge in which one perforation is formed per frame, and the unit. A chamber formed in the main body for storing the patrone, and a chamber for accommodating the photographic film drawn from the patrone in a light-tight manner,
A lens-fitted film unit, comprising: a sensor member that engages and disengages from the perforation. 2. The film with a cartridge is provided with two rows of perforations parallel to the transfer direction with an exposure screen sandwiched between them. The perforations are switched every other row to form one perforation. The film unit with a lens according to claim 1, wherein