JP2564847Y2 - Film unit with lens - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens-fitted photo film unit in which a photographic film is pre-loaded at the time of manufacture into a unit body incorporating a photographing mechanism. [0002] Conventionally, it is customary for a user to load a photographic film into a camera and take a picture. However, since it is rare for a person to always carry a camera, there is an inconvenience that the camera is not at hand when photographing is desired. In order to easily take a picture even in such a case, the present applicant has commercialized a film unit with a lens "Sharun" (trade name). This film unit with lens is a unit body that incorporates a simple photographing mechanism including a shutter, and is integrated with a 110 film cartridge. It can be purchased from the nearest store at a low price like purchasing a normal photo film. be able to. After use, a request for a DPE is made for each unit body, so that the user does not have to perform the operation of removing the used cartridge. In this film unit with a lens, a 110 film loaded in a cartridge together with a backing paper is used as a photographic film. At the time of assembly, the exposure frame formed on the unit body is
The exposure aperture on the side of the zero-film cartridge may be inserted so as to be pressed, and 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 that fogging will occur during this operation. [0005] However, in order to be able to take a picture with good image quality, a lens having a screen size larger than the 110 film, for example, a 135 film containing a patrone, which is the most popular, is used. When attempting to form a film unit, there is a major problem due to the difference in the cartridge structure. For example,
When assembling a film unit with a lens, a patrone containing a roll of unexposed film is loaded into a unit body with a built-in photographic lens and shutter, and the end of the film coming out of the patrone is provided on the unit body. A method of assembling the unit body by attaching the back plate to the shaft after engaging with the take-off shaft is considered. However, in this case, the film is pulled out from the patrone for each photographing, and is wound around the winding shaft. When the use is completed, all the films are pulled out from the patrone. . Therefore, it is necessary to rewind the exposed film to the cartridge before taking out the cartridge from the unit body prior to the development processing. [0007] In a product such as a film unit with a lens, which allows the user to enjoy photography easily and easily, if the user performs the above-mentioned film rewinding operation, the feature of the simplicity of operation is impaired. Is not preferred. Further, when a film rewinding operation is performed in a film developing station, a special rewinding machine is required for mass processing, which is disadvantageous in terms of cost and time. From such a viewpoint, when storing a film in the unit main body, a method is conceivable in which an unexposed film is drawn out of the cartridge in advance, and the exposed film is rolled into the cartridge for each photographing. According to this, the entire film is stored in the patrone at the time when the photographing is completed for all the frames of the film, so that the above-mentioned inconvenience can be solved and it is very effective. On the other hand, in a system in which the unit itself is put out to a DPE shop after use, and the unit body is not left behind by the user, the structure of the unit body is made as simple as possible, the number of parts and the number of assembly steps are reduced, and the manufacturing cost is reduced. Must be cheap. In addition, in order for anyone to easily enjoy photography, it is necessary to ensure that the operation is simple and that the operation such as film feeding is secure. The present invention has been made in view of such circumstances, and has as its object to provide a film unit with a lens which has a simple structure, is easy to operate, and can be operated reliably. I do. In order to achieve the above-mentioned object, a film unit with a lens according to the present invention comprises a unit body in which a photographing mechanism including a photographing lens and a shutter is incorporated. A patrone storage chamber for storing a patrone having a locked rotatable spool shaft, and a film storage chamber for storing a photographic film drawn from the patrone in a roll shape are provided. A patrone and a photographic film are pre-loaded into the unit main body at the time of manufacture, and the exposed photographic film is wound around the patrone by rotating the spool shaft for each photographing. The unit main body incorporates a circular winding knob for directly engaging with the spool shaft and rotating the spool shaft in the direction in which the photo film is wound by a rotation operation from outside the unit main body. I have. In addition, the unit main body is entirely open on its back surface, and covers the entire back surface to constitute the back surface of the film unit with a lens, and to keep the photo film loaded in the unit main body light-tight. Back cover is attached. An opening is formed in the back cover, and when attached from the back side of the unit body, a part of the winding knob is fitted into the opening so as to protrude from the back cover, and the winding knob is Enables rotation operation. Since the exposed photographic film is sequentially wound into the cartridge for each photographing, no film rewinding operation is required when the photographing is completed, and no rewinding mechanism is required. . Since the hoisting knob is directly connected to the spool shaft provided on the patrone, the structure is simplified and the operation is reliable. The unit itself has a part of the hoisting knob protruding from the back, and the entire back is open.The entire back is covered with a back cover, and at this time, a part of the hoist knob is Fit into the opening. As part of this hoisting knob protrudes from the opening of the back cover, just slide your finger along the back cover with your finger touching the hoisting knob, and turn the hoisting knob to wind up. Can operate. FIG. 1 shows the overall structure of a film unit with a lens according to the present invention. In this film unit with lens, 135 film with a patrone, which is currently most widely used, is used. In FIG. 1, a unit body 10, a front cover 12, and a back cover 14 are formed by plastic molding, and constitute main members of a film unit with a lens. As described later, the front cover 12
The back cover 14 is connected to the unit body 10 from the front and back, and then fixed by ultrasonic welding or the like, and the user can attach the film 16 built in the unit body 10 to the unit body 10.
Can not be removed from. As shown in FIG. 2, the lens-fitted film unit is formed into a rectangular parallelepiped shape as a whole after assembly, and is covered with a paper box (not shown). Then, the photographing operation can be performed while being covered with the paper box via a shutter button hole, a lens hole or the like formed as an opening in the paper box. First, the unit main body 10 will be described. In FIG. 1, a patrone storage chamber 20 is formed on the left side of the substrate 18 and a roll-shaped film storage chamber 22 is formed on the right side of the substrate 18 at a predetermined interval. Patrone storage room 2
0 and the lower surface of the roll film storage chamber 22
A and 22A, so that the film 16 is loaded into the patrone storage chamber 20 and the roll-shaped film storage chamber 22 from below. In the film unit with a lens according to the present invention, the film 16 is drawn out of the patrone 24 in advance, and the photographed films are sequentially stored in the patrone 24. For this reason, the film 16 is loaded into the patrone chamber 20 while being stored in the patrone 24, and then wound up and stored in the storage chamber 22 in a rolled state. Alternatively, the film 16 is unwound from the patrone 24 in a dark room, is brought into a roll state 26, and then is stored in the storage chamber 2 from the lower surface.
0, 22 may be loaded. The patrone storage room 20 of the unit body 10
A planar connecting portion 25 is provided between the roll-shaped film storage chamber 22 and the roll-shaped film storage chamber 22, and an exposure frame (not shown) is formed in the connecting portion 25. A rectangular frame 28 is formed around the patrone storage room 20, the roll-shaped film storage room 22, and the connecting portion 25, and a film 16 is formed on the lower surface of the frame 28.
The openings are formed to communicate with the openings 20A and 22A on the lower surfaces of the storage chambers 20 and 22 in order to load the cells. At the top of the patrone storage chamber 20, a winding knob 30 is pivotally supported on the left side of the unit main body 10 in FIG. 1, and this winding knob 30 is a winding member which is rotatably operated by a user from the outside when the film is wound. . A fork (not shown) is formed on the rotation shaft of the hoisting knob 30 so as to engage with the spool shaft 32 of the cartridge 24. Therefore, by rotating the winding knob 30 in the direction of the arrow in the figure, the exposed film 16 is stored in the cartridge 24, and the unexposed film 16 is pulled out from the roll film storage chamber 22. Further, the unit body 10 is provided with a photographing mechanism including a photographing number display plate 34, a locking lever 36, a shutter driving lever 38, a shutter blade 40, and a driven sprocket 108. FIG. 3 shows a detailed structure of the photographing mechanism. Shutter button 64 shown in FIG.
Is mounted on the left side of the front cover 12 in FIG. 1 so as to be rotatable around a shaft 100.
The rod 102 is integrally formed with the rod 4 so as to extend rearward. On the other hand, the unit body 10 has the locking lever 3
6 is rotatably supported about a shaft 104 and is urged to rotate clockwise by a spring 106. That is, a bent piece 36A is formed on the locking lever 36, and one end 106A of the spring 106 is locked to the bent piece 36A,
As a result, the locking lever 36 is urged to rotate clockwise about the shaft 104. Bending piece 36A of locking lever 36
Is in contact with the rod 102 of the shutter button 64. Therefore, when the shutter button 64 is pressed down, the shutter button 64 rotates about the shaft 100, and the locking lever 36 is rotated counterclockwise by the rod 102 against the bias of the spring 106. . The locking lever 36 is provided with a locking claw 36B,
The winding claw 36B is provided on the outer peripheral portion 30A of the winding knob 30.
After the film is wound, the turning of the winding knob 30 is disabled. The film 16 has a perforation 16
A, 16A,... Are formed, and a perforation 1 is formed.
6A, 16A,... Have eight holes corresponding to one frame of film. This perforation 16A,
The driven sprockets 108 mesh with 16A,. The driven sprocket 108 rotates once by feeding one frame of the film. Therefore, the driven sprocket 108 has eight teeth. The cam 11 is coaxial with the driven sprocket 108.
The cam 110 is provided with a locking lever 3.
The sixth claw 36C is configured to abut. That is, when the film 16 is wound up as shown by the arrow, the driven sprocket 108 rotates counterclockwise as shown in the figure, and accordingly, the cam 110 also rotates counterclockwise. When the cam 110 rotates counterclockwise, the claw 36C of the locking lever 36 is gradually pressed and rotated counterclockwise, whereby the locking lever 36 counterclockwise resists the urging force of the spring 106. It will be turned. A shutter drive lever 38 is supported by the unit body 10 so as to be rotatable about a shaft 112, and is urged to rotate counterclockwise by a spring 106.
That is, the other end 106B of the spring 106 abuts against the spring receiver 38A of the shutter drive lever 38, whereby the shutter drive lever 38 is urged to rotate counterclockwise. The shutter drive lever 38 comes into contact with the protrusion 36D of the locking lever 36 as shown in FIG.
1 is held at the position shown in FIG. An L-shaped bent piece 38B is formed on the shutter drive lever 38, and the tip of the bent piece 38B faces the shutter blade 40 as shown in FIG. Therefore, when the projection 36D of the locking lever 36 comes off the shutter driving lever 38, the shutter driving lever 38
The shutter blade 40 is rotated counterclockwise by the urging force of 06 to open and close the shutter blade 40. That is, the shutter blade 40 is
0A and the spring 40B
As a result, it is urged to rotate counterclockwise and abuts a stopper (not shown). In this state, when the shutter drive lever 38 is rotated by the urging force of the spring 106 as described above, the claw 40C of the shutter blade 40 is kicked off by the bent piece 38B, whereby the shutter blade 40 is opened. Then, photographic exposure is performed. When the bent piece 38b of the shutter drive lever 38 gets over the claw 40C of the shutter blade 40, the shutter blade 40 is pulled back by the spring 40B,
The photographing opening 42 is closed. A shutter charging cam 114 is provided coaxially with the driven sprocket 108. After the shutter drive lever 38 opens and closes the shutter blade 40, its claw 38C fits into the notch 114A of the cam 114. Cam 11
Since the film 4 is provided coaxially with the driven sprocket 108, it rotates when the film 16 is wound up, and returns the shutter drive lever 38 to its original position. Further, a one-tooth gear 116 is provided coaxially with the driven sprocket 108, and this one-tooth gear 116 meshes with a gear 34 A formed on the outer periphery of the display panel 34. Therefore, when the driven sprocket 108 makes one rotation, the one-tooth gear 116 also makes one rotation, so that the display plate 34 is moved by one image and the number of images is displayed. On the front surface of the shutter blade 40, a plate-shaped lens holder 44 shown in FIG. 1 is provided. A concave portion 46 is formed in the lens holder 44 at a position corresponding to the photographing opening 42, and a plastic photographing lens 48 is arranged in the concave portion 46. Next, the front cover 12 will be described. A shutter button opening 62 is formed on the left side of the upper plate 60 of the front cover 12.
4 are arranged. When the shutter button 64 is pressed down, the shutter drive lever 38 and the like of the above-described photographing mechanism operate. Further, the upper plate 60
A window 66 for displaying the number of shots is formed in the window.
Displays the number of images taken on the display plate 34. A finder light-shielding cylinder 70 is formed on the front surface 68 of the front cover 12. Further, a circular hole 72 for photographing is formed in the front surface 68, and the circular hole 72 is formed so as to be located on the optical axis of the photographing lens 48. Rectangular small holes 76, 76 are formed on both left and right sides of the imaging circular hole 72. These small holes 76, 76 are formed at positions corresponding to the locking claws 78, 78 formed on the unit main body 10, and are used for temporary fixing when the front cover 12 is connected to the unit main body 10. Next, the structure of the back cover 14 will be described. The back cover 14 is formed in a substantially L-shape by a back plate 80 and a bottom plate 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. Also back plate 80
2, a part of the hoisting knob 30 is protruded to the rear side after the assembly, as shown in FIG. 2, so that the hoisting knob 30 can be easily rotated from the rear side. I can do it. Further, the winding knob 30 is provided with a horizontally long opening 8.
6 restricts the movement in the vertical direction, the upper surface of which is covered with the upper plate 60 of the front cover 12 and only exposes a part necessary for the winding operation to the outside. There is no detachment, no engagement with the patrone shaft 32, or no looseness of the hoisting knob 30, and a reliable and smooth hoisting operation can be performed. In addition, since the winding knob 30 and the spool shaft 32 are directly connected to each other, the distance between the winding knob 30 and the patrone 24 frequently operated by the user is shortened. Since the structure is exposed from the opening 86, there is no possibility that external light directly hits the vicinity where the winding knob 30 and the spool shaft 32 are connected, and a part of the light enters the patrone storage chamber 20. Therefore, it is advantageous in light shielding.
Further, for the same reason, dust can be prevented from entering the unit body 10 and further into the patrone storage room 20. Further, a curved film supporting surface 88 is formed on the back plate 80. When the winding knob 30 is turned, the film 16 moves along the film supporting surface 88. When the back cover 14 is assembled to the unit body 10, the bottom plate 80 of the back cover 14 is located below the substrate 18, and has an opening 20 </ b> A formed at the bottom of the patrone storage chamber 20 and the roll-shaped film storage chamber 22. , 22A. After the film 16 is stored between the patrone storage room 20 and the rolled film storage room 22 of the unit main body 10, when the back cover 14 is pushed in, the film 16 is stored in the unit main body 10 in a light-tight state. . Thereafter, the unit body 10 and the back cover 14, and the front cover 12 and the back cover 14 are fixed by ultrasonic welding or the like. According to the lens-fitted photo film unit according to the present invention constructed as described above, when the shutter button 64 in FIG. 2 is first depressed, the rod 102 pivots the locking lever 36 counterclockwise. The locked state with the shutter drive lever 38 is released. As a result, the shutter drive lever 38 is rotated counterclockwise by the spring 106 to open and close the shutter blades 40, thereby exposing the film 16 located on the exposure frame to exposure. In this state, the pawl 36B of the locking lever 36 is separated from the hoist knob 30, so that the hoist knob 30 flies. In FIG. 2, when the winding knob 30 partially protruding from the back side of the back cover 14 is rotated, the cartridge shaft 32 is rotated, and the exposed film 16 is wound into the cartridge 24 and stored. Is done. When the film 16 is fed, the driven sprocket 108 rotates as described above, and the cams 110 and 114 and the one-tooth gear 116 rotate. When the cam 114 rotates, the shutter driving lever 38 is first returned to the original position, and then the locking lever 36 is rotated by the cam 110 to return to the original position, and the shutter driving lever 38 is locked. Lever 3
Lock by 6. At this time, the number-of-photographs display plate 34 is sent for one photograph, and the number of photographed images is displayed. As a result, a shutter charge operation is performed. 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 film unit with the lens of the present invention, the film is stored in the unit main body in a state where the film is pulled out from the patrone, and the winding knob is rotated for each photographing operation. The exposed film is rolled into the patrone, so after the user uses it, all the exposed films are stored in the patrone, eliminating the need for a mechanism for rewinding the film. The film can be easily taken out for post-processing. Moreover, since the winding knob is directly connected to the spool shaft provided on the patrone for winding the film, the structure is simple and a reliable operation can be obtained. Also, the entire back of the unit body is open, but by attaching one back cover to the unit body, the entire back of the unit body can be easily covered to form the back side of the lens-equipped film unit. can do. In the unit body, a part of the hoisting knob protrudes from the opened back, but an opening is formed in the back cover, so when the back cover is attached to the unit body, a part of the hoisting knob opens. And can be exposed to the outside. With a structure in which a part of this winding knob is exposed from the back cover, the thumb is placed on the exposed part of the winding knob while holding the film unit with lens by hand. By simply sliding the thumb along the opening while keeping the thumb on the lid, the winding operation can be performed smoothly and easily, and a good winding operation feeling can be obtained. Further, since a part of the hoist knob is exposed through the opening of the back cover, it is advantageous in light-shielding measures and dust-proof measures, which tend to be problematic when the hoist knob and the spool are directly connected. Further, since the rear surface of the unit main body is open, the loading of the patrone and the photographic film becomes easy. By attaching the back cover to the rear surface of the unit main body after the loading, the photographic film can be kept light-tight.
If the entire winding knob is exposed above the unit body, a large force is likely to be applied to the winding knob, which may break the film feeding mechanism, the reverse rotation preventing claw, and the like. In the present invention, since a part of the winding knob is exposed from the opening of the back cover, no excessive force is applied to the winding knob. In addition, since most of the winding knob is incorporated in the unit main body, for example, a reverse rotation preventing claw that engages with the winding knob can also be provided in the unit main body, so that layout of components related to the winding knob is easy. . Furthermore, the back of the lens-fitted film unit can be configured by attaching only one back cover to the back of the unit body, so that the number of parts is small and the assembly of the lens-fitted film unit is simplified.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a film unit with a lens using the present invention. FIG. 2 is an external view of the lens-fitted film unit shown in FIG. 1 after assembly. FIG. 3 is a perspective view showing details of a photographing mechanism used in the film unit with a lens shown in FIG. 1; [Description of Signs] 10 Unit body 12 Front cover 14 Back cover 16 Film 24 Patrone 30 Winding knob 32 Spool shaft 86 Opening

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Toshio Yoshida               4112 Mito, Higashino, Omiya-cho, Naka-gun, Ibaraki Prefecture               Kiki Co., Ltd.                (56) References JP-A-49-57833 (JP, A)                 Shokai Sho 63-9217 (JP, U)                 Shokai Sho 57-139940 (JP, U)                 Jikken Sho 53-47941 (JP, Y1)                 US Patent 3,986,467 (US, A)

Claims (1)

(57) [Rules for requesting registration of utility model] In a unit body in which a photographing mechanism including a photographing lens and a shutter is incorporated, a patrone storage chamber for storing a patrone having a rotatable spool shaft that locks one end of the photographic film, and a photographic film drawn from the patrone are stored. A film storage chamber for storing in a roll form is provided, and a patrone and a roll of a photographic film are pre-loaded at the time of manufacture, and the exposed photographic film is wound around the patrone by rotating the spool shaft for each photographing. A lens-fitted film unit, wherein the unit body directly engages with the spool shaft,
A circular winding knob for rotating the spool shaft in the direction in which the photo film is wound by a rotating operation is incorporated.The unit body is entirely open on the back surface, and covers the entire back surface with a lens. A back cover for forming the back of the film unit and keeping the photographic film loaded in the unit main body light-tight is attached.When attaching the back cover from the back side of the unit main body, A film unit with a lens, wherein an opening is formed in the back cover so that a part thereof is fitted to project from the back cover so that the winding knob can be rotated.