JP2564847Z - - 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, the DPE depends on the unit itself, 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 aperture formed on the 110-film cartridge may be inserted into the exposure frame formed on the unit body 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 cartridge containing unexposed film in a roll is loaded into a unit body with a built-in projection lens and shutter, and the tip of the film coming out of the cartridge is attached to the unit body. A method of assembling by attaching a back plate to the unit main body after engaging with the provided winding shaft may be considered. However, in this case, the film is pulled out from the patrone for each photographing and wound around the winding shaft, so that when the use is completed, all the films are removed from the patrone. Become. 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. It is not good. Also,
When the film rewinding operation is performed at the film developing station, a special rewinding machine is required for large-scale 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. [0009] On the other hand, in a system in which the unit main body is put out to the DPE shop after use, and the unit main body does not remain at the user's hand, the structure of the unit main body is made as simple as possible, and the number of parts and the number of assembling steps are reduced to manufacture the unit. Costs must be reduced.
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 winding direction of the photographic film by a rotation operation from outside the unit main body. . The hoist knob is exposed at the rear of the unit body. 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 body is
A part of the hoist knob protrudes from the back, and the entire back is open, but the entire back is covered with the back cover, and at this time, a part of the hoist knob fits into the opening of the back cover. Get stuck. Since a part of this winding knob protrudes from the opening of the back cover, turn the winding knob with just a part of your finger on the winding knob and slide your finger along the back cover. Winding operation can be performed. 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,
The front cover 12 and the 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 and the back cover 14
After being connected to the unit body 10 from the front and back, it is fixed by ultrasonic welding or the like,
The user cannot remove the film 16 contained in the unit body 10 from the unit body 10. As shown in FIG. 2, the lens-fitted film unit is formed into a rectangular parallelepiped shape as a whole after assembling, and is covered with a 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 body 10 will be described.
A patrone storage chamber 20 is formed on the left side of the upper portion 8 and a roll-shaped film storage chamber 22 is formed on the right side thereof with a predetermined interval therebetween. The lower surfaces of the patrone storage room 20 and the roll-shaped film storage room 22 have openings 20A and 22A, and therefore, the film 16 is loaded into the patrone storage room 20 and the roll-shaped film storage room 22 from below. In the film unit with a lens according to the present invention, the film 16
Are pulled out of the patrone 24, and the photographed films are sequentially stored in the patrone 24. For this reason, the film 16 is loaded into the patrone chamber 20 with the bearer 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 placed in the patrone 24 in a dark room.
After being unwound from and rolled 26, it may be loaded into the storage chambers 20 and 22 from the lower surface. A flat connecting portion 25 is provided between the cartridge housing chamber 20 and the roll film housing chamber 22 of the unit body 10, and an exposure frame (not shown) is formed in the connecting portion 25. Patrone storage room 20, rolled film storage room 22
A rectangular frame 28 is formed around the connecting portion 25. On the lower surface of the frame 28, openings 20A on the lower surfaces of the storage chambers 20 and 22 for loading the film 16 are provided.
, 22A are formed. The unit body 10 in FIG.
A winding knob 30 is pivotally supported on the left side of the film. The winding knob 30 serves as a winding member that 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. The unit main body 10 further includes a number-of-photographs display plate 34 and a locking lever 36.
, A shutter drive lever 38, a shutter blade 40, and a driven sprocket 108 are provided. FIG. 3 shows a detailed structure of the photographing mechanism. A shutter button 64 shown in FIG. 3 is attached to the left side of the front cover 12 in FIG. 1 so as to be rotatable around a shaft 100. Further, a rod 102 is formed integrally with the shutter button 64 so as to extend rearward. Have been. On the other hand, the locking lever 36 is supported on the unit body 10 so as to be rotatable 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 on the bent piece 36A, whereby the locking lever 36 is urged to rotate clockwise about the shaft 104. Have been. The lower end of the bent piece 36A of the 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 axis 100,
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 fitted to the outer peripheral portion 30A of the winding knob 30 to disable the rotation of the winding knob 30 after the film is wound. Are formed on the film 16, and the perforations 16A, 16A,... Have eight holes and correspond to one frame of the film. A driven sprocket 108 meshes with the perforations 16A. The driven sprocket 108 rotates once by feeding one frame of the film. Therefore, the driven sprocket 108 has eight teeth. A cam 110 is provided coaxially with the driven sprocket 108, and the pawl 36C of the locking lever 36 comes into contact with the cam 110. 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 locking lever 36
Is gradually pressed and rotated in the counterclockwise direction, whereby the locking lever 36 is rotated in the counterclockwise direction against the urging force of the spring 106. 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 projection 36D of the locking lever 36 as shown in FIG. 1, and is therefore held at the position shown in FIG. 1 against the urging force of the spring 106 in the counterclockwise direction. An L-shaped bent piece 38B is formed on the shutter drive lever 38.
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 is disengaged from the shutter drive lever 38, the shutter drive lever 38 rotates counterclockwise by the urging force of the spring 106, and opens and closes the shutter blade 40. That is, the shutter blade 40 is supported rotatably about the shaft 40A and is urged to rotate counterclockwise by the spring 40B to abut a stopper (not shown). In this state, when the shutter drive lever 38 is rotated by the biasing force of the spring 106 as described above, the claw 40C of the shutter blade 40 is bent.
8B, the shutter blades 40 are opened, and photographic exposure is performed. The bent piece 38b of the shutter drive lever 38 is a claw 40C of the shutter blade 40.
, The shutter blade 40 is pulled back by the spring 40B, and closes the photographing opening 42. A shutter charging cam 114 is provided coaxially with the driven sprocket 108, and the shutter driving lever 38 opens and closes the shutter blade 40, and then engages with its pawl 3
8C fits into the notch 114A of the cam 114. Since the cam 114 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, the driven sprocket 108 is provided with a one-tooth gear 116 coaxially, and the one-tooth gear 116 is a gear 34 A formed on the outer periphery of the number-of-photographs display plate 34.
And are engaged. 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. The plate-like lens holder 44 shown in FIG.
Is provided. The lens holder 44 has a recess 4 at a position corresponding to the photographing opening 42.
6 is formed, and a plastic taking lens 48 is disposed 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, and a shutter button 64 is disposed in the opening 62. When the shutter button 64 is pressed down, the shutter drive lever 38 and the like of the above-described photographing mechanism operate. Further, a window 66 for displaying the number of images to be taken is formed in the upper plate 60.
4 is displayed. 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 in the unit body 10,
Used for temporary fixing when connecting the front cover 12 to the unit 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. In the back plate 80, a horizontally long opening 86 is formed. As shown in FIG. 2, after the assembling, a part of the hoisting knob 30 is protruded to the rear side, and the hoisting knob 30 is easily connected from the rear side. It can be rotated. Further, the vertical movement of the winding knob 30 is restricted by a horizontally long opening 86, and the upper surface thereof is covered with the upper plate 60 of the front cover 12, and only a part necessary for the winding operation is exposed to the outside. Since the hoisting knob 30 is not disengaged during use, the engaging with the patrone shaft 32 is not disengaged, or the hoisting knob 30 does not rattle, and a reliable and smooth winding operation can be performed. Can be. The winding knob 30 and the spool shaft 3
2. The hoisting knob 30 frequently operated by the user due to the direct connection of
The winding knob 30 has a structure in which only a part of the winding knob 30 is exposed from the opening 86 of the back cover 14, so that the winding knob 30 and the spool shaft 3
External light does not directly hit the vicinity of the connection between the two, and a part of the light does not enter into the patrone storage room 20, which is advantageous in light shielding. Further, for the same reason, refuse is collected in the unit body 10 and further in the patrone storage room 20.
It can be prevented from getting inside. 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. The film 16 includes a patrone storage room 20 of the unit body 10 and a roll-shaped film storage room 2.
Then, when the back cover 14 is pushed in after being housed between the unit 2, the back cover 14 is housed 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 film unit of the present invention having the above-described structure, first, when the shutter button 64 is depressed in FIG.
02 rotates the locking lever 36 counterclockwise, and the locked state with the shutter drive lever 38 is released. As a result, the shutter wall moving 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 turned by the hoisting knob 30.
, The hoisting knob 30 is fleeted. 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, the one-tooth gear 1
16 is rotated. 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. Locked by lever 36. 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 ASA100, 200, 4
00, 1000.1600, etc. 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 to rewind the film. The film can be easily taken out for post-processing. Moreover, for winding the film, only the winding knob is directly connected to the spool shaft provided in the patrone,
The simple structure and the reliable operation are 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 that 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, with the thumb placed on the exposed part of the winding knob while holding the film unit with lens by hand, Keep your thumb on the lid,
By simply sliding the thumb along the opening, 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 are likely to cause problems when the hoist knob and the spool are directly connected. Further, since the back of the unit main body is open, the loading of the patrone and the photographic film becomes easy, and the photographic film can be kept light-tight by attaching the back cover to the back of the unit main body after the loading. 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. Further, 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 surface of the lens-fitted film unit can be configured by attaching only one back cover to the back surface 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

Claims (1)

[Claims for utility model registration] A cartridge housing chamber for accommodating a cartridge having a rotatable spool shaft in which one end of a photographic film is locked, in a unit body in which a photographing mechanism including a photographing lens and a shutter is incorporated; A film storage chamber for storing a photographic film drawn from the patrone in a roll form is provided, and a patrone and a roll of photographic film are pre-loaded at the time of manufacture, and the spool is rotated by each rotation to expose the film. A film unit with a lens configured to wind a photographic film that has already been wound into a patrone, wherein the unit body is directly engaged with the spool shaft, and the spool shaft is rotated in the photographic film winding direction by a rotation operation. A wind-up knob having a circular shape for causing the A part is located below the upper plate of the unit main body and is partially exposed beyond the rear side edge of the upper plate, and the entire rear surface of the unit main body is open. Cover and constitute the back of the lens-equipped film unit, and a back cover for keeping the photographic film loaded in the unit body light-tight is attached, and when attaching this back cover from the back measurement of the unit body, A film unit with a lens, wherein a part of the winding knob is fitted so as to protrude from the back cover, and an opening is formed in the back cover to enable the rotation operation of the winding knob. .