JP2980494B2 - Film unit with lens - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film unit with a lens, and more particularly, to a photographic film packaging unit (hereinafter, referred to as a "film unit with a lens") provided with a photographing exposure function in advance. ). 2. Description of the Related Art Conventionally, photographing is usually performed by loading a camera with a film. However, only a small number of people always carry a camera, and there is an inconvenience that the camera is not at hand when they want to shoot. In that case,
You can purchase a film unit with a lens from the nearest store at a low price, just like purchasing normal photographic film, and if you can request a DPE for each film unit with a lens after shooting, like a conventional photographic film, It is convenient. In order to satisfy such demands, the applicant has provided a lens-equipped film unit "Shakurun" (product name) in which a lens is attached to 110 film. This product uses 110 film loaded in the cartridge together with the backing paper as the film. Therefore, at the time of assembling the film unit with the lens, the cartridge may be assembled by pressing the exposure aperture on the cartridge side against the exposure frame formed on the unit body.
Efficient assembly can be performed. In addition, even when the cartridge is taken out of the unit main body prior to the development processing, the film is kept in the light-shielded state in the cartridge, so that there is no possibility of fogging during this operation. [0003] However, in order to be able to take a picture with good image quality, a film unit with a lens using a 135 inch film with a large screen, for example, the most popular patrone, is used. When trying to configure, there is a big problem caused by the difference in the cartridge structure. That is, since such 135 film has a backing paper, it is necessary to secure light shielding in handling the film. On the other hand, in the film unit with a lens, when the exposed film is taken out of the film unit with the lens which has been photographed in a developing lab, if the openable and closable back cover used for a camera is used, the manufacturing cost of the unit body is reduced. Increase. Further, since the film can be exchanged, there is a possibility that the user may insert a new film and reuse it. However, the film unit with the lens needs to be manufactured at low cost and provided to the user at low cost. For this reason, since the accuracy is not guaranteed for repeated use, an unexpected trouble may be caused. For this purpose, if the back cover cannot be freely opened and closed, the unit will be broken when the film is taken out, thereby making it impossible to reuse the unit. However, if the unit is violently broken, the photographed film will be damaged, which is not preferable. In addition, when a large amount of film is processed, a simple breaking method is desired. The present invention has been made to solve the above-mentioned drawbacks of the conventional film unit with a lens.
In addition to making it easy to take out the film that has been taken from the used film unit body,
An object of the present invention is to provide a lens-equipped film unit in which a cover covering an opening for taking out a film is prevented from being opened carelessly. According to the present invention, in order to achieve the above object, an unexposed film is incorporated in advance and exposure is performed by operating a shutter means on this film. In a film unit with a lens in which the main body and the back surface of the unit are fixed, a patrone for winding a film that has been photographed is arranged in a film winding chamber in the unit main body. The bottom surface of the chamber has an opening, while a film winding member is provided above the winding chamber to be engaged with a winding shaft of the patrone. The opening in the bottom surface shields the winding chamber from light and removes the patrone. When the lid is opened, the film unit body is covered with an outer case having an opening that exposes a predetermined portion of the unit containing the film, and the lid is opened. The feature is that it is prevented from being done. According to the present invention, the lid provided at the bottom of the patrone can be removed by an external force, so that the patrone loaded in the film winding chamber can be easily taken out. Further, since the lid cooperates with the bottom surface of the wall of the winding chamber constituting the patrone chamber to shield the winding chamber from light, the dark chamber in which the patrone is loaded can be surely shielded from light. Further, since the unit body is covered by the outer case so as to prevent the lid from being opened while the lid is locked to the unit, the lid is not carelessly opened when the photographer accidentally drops it. Preferred embodiments of a film unit with a lens according to the present invention will be described in detail with reference to the accompanying drawings. In this embodiment, the most widely used international standard ISO1
13 with patrone specified in 007-1979 version
An example using a film unit with a lens using five films will be described. FIG. 1 shows the entire structure of a lens-fitted film unit according to the present invention, in which 10 is a unit body, 12 is a front cover, 14 is a back cover, which are manufactured by plastic molding, and are main members of the lens-fitted film unit. Has made. As will be described later, the front cover 12 and the back cover 14 are joined to the unit body 10 from the front and back, and then fixed by ultrasonic welding or the like, and the user attaches the film 16 built in the body 10 to the unit body 1.
It cannot be removed from inside 0. still,
As shown in FIG. 2, after assembling the film unit, the whole is formed into a rectangular parallelepiped shape and is covered with a paper box 17 shown in FIG.
A, a photographing operation can be performed via the lens hole 17B and the like. First, the unit main body 10 will be described. A patrone storage chamber 20 and a roll-shaped film storage chamber 22 are formed on a cover plate 18 at a predetermined interval. Openings 20A and 22A are formed, so that the film 16 can be loaded into the patrone storage chamber 20 and the roll-shaped film storage chamber 22 from below. In the film unit according to the present invention, the film 16 is pulled out from the patrone 24 in advance, and the photographed films are sequentially stored in the patrone 24 after the photographing operation. Therefore, the film 16
In a state of being stored in the patrone 24, it is loaded into the patrone storage room 20, and then wound up and stored in the storage room 22 in a roll state. Alternatively, the film 16 may be unwound from the patrone 24 in a dark room, brought into a roll state 26, and then loaded into the storage chambers 20, 22 from the lower surface of the unit body. A flat connecting portion 2 is provided between the cartridge storage chamber 20 and the roll-shaped film storage chamber 22 of the unit body 10.
The connecting portion 25 has an exposure frame (not shown). A rectangular frame 28 is formed around the patrone storage room 20, the roll-shaped film storage room 22, and the connecting portion 25. The lower surface of the frame 28 has an opening 20A for loading the film 16 from below. An opening communicating with 22A is formed. A sealing projection (not shown) is formed on a surface of the frame 28 facing the back cover 14. A hoisting knob 30 is pivotally supported at an upper portion of the patrone storage chamber 20, and a fork (not shown) is formed on a rotation shaft of the hoisting knob 30 so as to engage with a spool shaft 32 of the patrone 24. Therefore, by rotating the hoisting knob 30 in the direction of the arrow in the drawing, the photographed film 16 is stored in the cartridge 24 from the roll-shaped film storage chamber 22. Further, the unit main body 10 is provided with a photographing mechanism including a photographed number display plate 34, a winding lever 36, a shutter lever 38, shutter blades 40, and the like. The shutter blade 40 opens and closes the photographing opening 42 shown in FIG. 1 during a shutter release operation. A plate-like lens holder 44 is provided on the front surface of the shutter blade 40. A hole 46 is formed in the lens holder 44 at a position corresponding to the opening 42, and a plastic photographing lens 48 is disposed in the hole 46. Next, the front cover 12 will be described. Front cover 12
A shutter button opening 62 is formed in the upper plate 60, and a shutter button 64 whose upper surface is curved upward and slightly protrudes from the upper surface of the unit is arranged in the shutter button opening 62. Shutter button 64
Has inclined surfaces on both sides, so that it can be smoothly inserted into the paper box 17 (see FIG. 4). When the shutter button 64 is pressed down, the shutter lever 38 and the like of the above-described photographing mechanism are operated. Further, a window 66 for displaying the number of images to be taken is formed in the upper plate 60, and the number of images to be taken on the display plate 34 is displayed in this window 66. Front 68 of front cover 12
Is formed with a finder light shielding cylinder 70. Further, a circular hole 72 for photographing is formed in the front surface 68.
2 is formed so as to be located on the optical axis of the taking lens 48. Further, rectangular small holes 76, 76 are formed on the left and right sides of the photographing opening 72. This rectangular small hole 7
6, 76 are locking claws 78 formed on the unit body 10;
It is formed at a position corresponding to 78. It is used for temporary fixing when connecting the unit body 10 to the front cover 12. Further, a concave portion 79 substantially concave in an arc shape is provided on the lower left portion of the front cover 12.
In addition, holes 12A, 12A are formed on both sides of the concave portion 79. Next, the structure of the back cover 14 will be described. The back cover 14 includes a back plate 80 and a bottom 82. A finder opening 84 is formed in the back plate 80, and the finder opening 84 is formed at a position corresponding to the light shielding cylinder 70 of the front cover 12. The back plate 80 is formed with a horizontally long opening 86. As shown in FIG. 2, the opening 86 exposes a part of the hoisting knob 30 after the assembling. It can rotate. Further, a curved film supporting surface 88 is formed on the back plate 80, and the film 16 moves along the film supporting surface 88 when the winding knob 30 is turned. On the other hand, when the back cover 14 is attached to the unit body 10 at the bottom 82 of the back cover 14, an opening 20 </ b> A formed below the substrate 18 and formed in the lower part of the cartridge storage chamber 20 and the roll-shaped film storage chamber 22. , 22A. The bottom portion 82 is divided and formed of a lid 100 having a light-shielding groove 108 having a shape similar to a shape obtained by projecting a patrone in a bottom direction, and a bottom plate 102. The lid 100 is formed integrally with the back plate 80 and is rotatable via a hinge 104, so that the lower surface of the opening 20A of the patrone storage chamber 20 can be opened and closed. A pair of locking claws 106, 106 are formed at the tip of the lid 100.
00 in the closed state as shown in FIG.
A. When the lid 100 is closed, the projecting piece 109 between the claws 106, 106 is located below the recess 79 of the front cover 12. Further, on the lid 100,
There are projections 101 and 103, and a light-shielding groove 108 is formed between the projections 101 and 103. The light-shielding groove 108, as shown in FIG. The bottom surface 20B of the portion is fitted, and the inside of the patrone storage chamber 20 is shielded from light by the bottom surface 20B and the ridges 101 and 103. Further, a rectangular step 110 is slightly raised near the back surface of the lid 100 near the hinge shaft 104, and the bottom surface of the patrone 24 is supported by the step 110. A groove 89 is formed in the peripheral edge of the film support surface 88, and a ridge of the unit body 10 is fitted into the groove 89, whereby the cartridge storage chamber 20, the roll-shaped film storage chamber 22, the exposure frame Is shielded from light. Therefore, after the film 16 is stored between the patrone storage chamber 20 and the roll-shaped storage chamber 22 of the unit main body 10, when the back cover 14 is pushed in, the film 16 is stored in the main body 10 in a light-tight state. In a general camera, the view ratio of the finder is usually about 80%. However, the screen size of the film is as large as 24 × 36,
Further, when the thickness t of the film unit with a lens is large, the finder opening 70 of the front cover 12 becomes very large if the view ratio is increased without using the finder lens. In the film unit with a lens according to the present invention, the size of the opening 70 is determined in advance in order to prevent the opening 70 from becoming large as shown in FIG. For example, 50
%), And if the eyes are shaken to the full left and right dimension x of the opening 84, the dimension is set to be close to about 100% including the hatched portion in FIG. In this case, how to determine the right and left dimension x of the opening 84 can be determined as follows: n · tan 18 / f = (X / 2 + Y / 2) / unit thickness t x = 2n · tan 18 / f · ty Good. n: Field of view y: Right and left dimensions of finder opening 70 In order to increase the field of view, the upper surface is required as shown in FIG.
This can also be achieved by forming the finder 71 formed by cutting out a part of the side surface. According to the film unit with a lens according to the present invention configured as described above, when the front cover 12 is pushed into the unit main body 10 during assembly, the locking claws 78, 78 engage with the holes 76, 76 of the front cover 12. The front cover 12 is stopped and stopped. In this state, the film 16 is inserted into the openings 20A,
2A is loaded into the unit body 10. Next, back cover 14
Is connected to the unit body 10, the ridges of the unit body 10 fit into the grooves 89 of the back cover 14, and the cover 100 is further closed, whereby the film 16 is stored in the film chamber in a light-tight manner. Next, an ultrasonic horn is pressed against the side edges 14A and 14B of the back cover 14, and the back cover 14, the unit body 10, and the front cover 12 are welded. On the other hand, when the release button 64 is operated in the film unit with the lens, the shutter blades 40 are opened and closed, and the film 16 located in the exposure frame is exposed. As described above, since the central portion of the release button 64 is curved and travels on a business trip, the photographer does not need to press his / her finger deeply when pressing the button, thereby simplifying the shutter release operation. Thereafter, when the winding knob 30 is rotated, the cartridge shaft 32 is rotated, and the exposed film 16 is stored in the cartridge 24. At the same time, the next frame to be photographed is supplied from the film storage chamber 22 to the exposure frame, whereby the display panel 34 is rotated, the shutter is charged, and the photographing preparation is completed. Hereinafter, photographing is performed by repeating this operation. In the present invention, for safety, the patrone 24 is provided with the stepped portion 110 so as to be abutted and supported by the stepped portion 110. Therefore, even if the film unit is dropped, the weight at the time of impact is mostly reduced by the stepped portion 110.
Further, the force applied to the lid 100 is reduced by the paper box that covers the unit from the outside and the locking claw 106 of the lid 100 can be prevented from coming off the unit main body 10. After shooting all the frames, submit the images as they are to the developing dealer. In the lab, the protrusions 10 on the lid 100
6 through hole 12A to open the lid or
The lid 109 is pushed downward to open the lid, the cartridge 24 is taken out, and the conventional developing and printing processes are performed, and the negative and print photographs are returned to the user. Normally, it is convenient to press the protruding piece 109 so that it can be released. When the protruding piece 109 cannot be released, the claw 106 may be further pushed backward through the hole 12A. The position of the lid is not limited to the bottom surface, and may be provided on the back surface. The sensitivity of the film used in the present invention is A
Any of SA100, 200, 400, 1000, 1600 and the like may be used. As described above, according to the present invention, since the lid provided at the bottom of the patrone can be removed by an external force, the patrone loaded in the film winding chamber can be simplified. Can be taken out. Further, since the lid is configured to cooperate with the bottom surface of the winding chamber serving as the patrone chamber to shield the light, it is possible to reliably shield the dark chamber portion in which the patrone is loaded. Furthermore, the outer case achieves the effect of preventing the lid from being opened carelessly when the photographer accidentally drops the unit.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a film unit with a lens of the present invention, FIG. 2 is an assembled perspective view of the film unit with a lens, and FIG. FIG. 4 is a cross-sectional view showing an opening / closing structure, FIG. 4 is a perspective view showing a state in which a unit is put in a paper box, FIG. 5 is an explanatory view showing a finder field, and FIG. 6 is a perspective view showing a modified example of the finder. DESCRIPTION OF SYMBOLS 10 Unit main body 12 Front cover 14 Back cover 20 Film winding chamber 20B Bottom 24 Patrone 100 Lid 101, 103 Ridge 104 Hinge 106 Locking claw 108 Light shielding groove 110 Step

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Toshio Yoshida               4112 Mito, Higashino, Omiya-cho, Naka-gun, Ibaraki Prefecture               Equipment Co., Ltd. (72) Inventor Hiroshi Omura               Fuji, 2-26-30 Nishiazabu, Minato-ku, Tokyo               Photo Film Co., Ltd.                (56) References JP-A-59-218433 (JP, A)                 JP-A-51-82612 (JP, A)                 47-237 (JP, U)                 Actually open 1979-123925 (JP, U)                 5-43303 (JP, Y2)                 Jiko 30-6359 (JP, Y1)                 Netherlands Patent Publication 6708486 (NL,               A)                 Camera review No. 31/1983 10               Month / Pages 48 and 138                 Invention Association Open Technical Report 86-11650

Claims (1)

(57) [Claims] At the manufacturing stage, a roll-shaped film provided on one side of the exposure frame
Unexposed film is pulled out of the patrone
And placed on the opposite side of the exposure frame.
One end of the unexposed film is inserted into the film take-up chamber
The placed patrone is arranged, and the unexposed film is
From the roll-shaped film storage chamber through the exposure frame
In the film unit with a lens that has been passed to the film winding chamber, exposure is performed by operating shutter means on the film, and the main body and the back of the unit are fixed. The unit disposed in a film winding chamber in the unit body.
The patrone is used to wind the film
A shaft, and a bottom surface of the winding chamber has an opening, while a film winding member that engages with a winding shaft of the patrone is provided above the winding chamber. It is to shield the winding-up chamber has been engaged lid is opened during cartridge extraction, so as to prevent the lid is opened, possess an opening for exposing a predetermined portion of the units containing film And said
A film unit with a lens, wherein the body unit of the unit is covered with a paper outer case capable of covering a lid portion . 2. The surface of the lid facing the winding chamber is provided with a light-blocking ridge in the vicinity of the lower outer peripheral surface of the cartridge in cooperation with the bottom surface of the winding chamber wall. The film unit with the lens described. 3. The film unit with a lens according to claim 2, wherein a portion of the surface of the lid facing the winding chamber near the rear surface is slightly raised.