JPH0720667Y2 - Film unit with lens - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a film unit with a lens, and in particular, the present invention relates to a photo film packaging unit (hereinafter referred to as a "film unit with a lens") to which an exposure function for photographing is added. ) Is related to.

[Prior art]

In conventional photography, a camera is usually loaded with a film. However, the number of people who carry the camera all the time was small, and there was the inconvenience that the camera was not at hand when I wanted to take a picture. In that case, you can purchase the lens-fitted photo film unit from the nearest store at a low price like you would buy a regular photo film, and after taking the photo, request the DPE for each lens-fitted photo film unit as you would for a conventional photo film. It would be very convenient if possible.

In order to meet such demands, the applicant provided a film unit with a lens “110-film” with a lens “Shashinrun” (trade name).

This product uses a 110 film loaded as a photographic film in a cartridge together with a backing paper. Therefore, when assembling this lens-fitted photo film unit, it suffices to press the exposure aperture on the cartridge side against the exposure frame formed on the unit main body, and it is possible to perform efficient assembly. Moreover,
Even when the cartridge is taken out from the unit main body prior to the developing process, since the film remains in the light-shielded state in the cartridge, there is no possibility of causing fog during this work.

[Problems to be solved by the invention]

However, in order to be able to take high-quality pictures, when trying to configure a lens-fitted photo film unit with a large screen size, for example, the 135 film with the most popular Patrone film, due to the difference in cartridge structure There is a big problem to do. For example, when assembling a film unit with a lens, a cartridge is stored on the base side of the main body with a built-in shooting lens, shutter, etc., the tip of the film is attached to the winding shaft, and then the back plate is put on the base of the main body to assemble. A method can be considered. However, in this case, since the film is wholly pulled out from the film cartridge at the time when the photographing is completed, it is necessary to rewind the exposed film to the film cartridge before the developing process. In a product pursuing such convenience, if the user rewinds the film, the convenience of the lens-fitted film unit is impaired, and it becomes impossible to distinguish it from the camera.

On the other hand, even if each unit is sent to the film developing station for development, the film developing station must rewind the film, which requires a special rewinding machine, which is disadvantageous in terms of cost and time.

From this point of view, when storing the film in the base of the main unit of the unit, an unexposed film should be pulled out of the cartridge in advance, and the exposed film should be wound into the cartridge for each shooting. To be
According to this, since the entire film is stored in the cartridge when the photographing is completed, the inconvenience as described above can be eliminated, which is very effective.

On the other hand, the lens-fitted film unit has the simplest structure possible, and the number of parts is reduced to reduce the number of assembly steps.
Its manufacturing cost must be cheap.

In order to make the lens-equipped film simple and small in size, the operating mechanism such as the film feed is simplified,
It is necessary to reduce the number of parts. On the other hand, even if the structure is simplified, the operation such as film feeding must be reliable.

The present invention has been made in view of the above circumstances, and an object thereof is to propose a lens-fitted film having a simple structure and operating reliably.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention includes a photographing mechanism such as a photographing lens and a shutter in a light-tight case, and
In a lens-fitted film unit in which a roll-shaped film is loaded before the light-tight case is assembled, and the photo-tight film is taken out by disassembling or damaging the light-tight case after the shooting is finished, one end of the film is wound. Is fixed to the film core in the light-tight film container placed in the section, and the other end is placed in the film supply unit in a roll shape, and the film core is rotated every time the image is taken,
It is configured to be rolled into the light-tight film container, the light-tight film container is disposed on the side where the shutter button is present from the exposure opening for photography,
The film winding core of the container is directly engaged with a rotating shaft of a hoisting member that can be operated externally.

[Action]

In the present invention, since the film rewound from the film container is loaded, the rewinding mechanism is not necessary, and the film winding member is directly connected to the winding shaft of the film container to have a simple structure. Since the shutter button and the shutter button are arranged on one side of the unit, it is easy to use.

[Example of device]

Hereinafter, preferred embodiments of a lens-fitted film unit according to the present invention will be described in detail with reference to the accompanying drawings.

In the present embodiment, the most popular patrone containing 13
An example using a lens-fitted film unit using 5 films will be described.

FIG. 1 shows the overall structure of a lens-fitted film unit according to the present invention, where 10 is a unit body, 12 is a front cover,
Reference numeral 14 denotes a back cover, which is manufactured by plastic molding and is a main member of the lens-fitted film unit. As will be described later, the front cover 12 and the back cover 14 are connected to the unit main body 10 from the front and rear and then fixed by ultrasonic welding or the like, and the user can remove the film 16 built in the main body 10 from the unit main body 16. I can't do it.

As shown in FIG. 2, after the film unit is assembled, it is formed into a rectangular parallelepiped shape as a whole and is covered with a paper box (not shown), and a photographing operation is performed through a shutter button hole, a lens hole, etc. opened in the paper box. You can do it.

First, the unit main body 10 will be described. On the substrate 18, a cartridge storage chamber 20 on the left side and a roll film storage chamber 22 on the right side are formed at predetermined intervals on the substrate 18 in FIG. 1, and the cartridge storage chamber 20 and the roll film storage chamber are formed. The lower surface of 22 has an opening 20
A and 22A are formed, so that the film 16 is loaded into the cartridge storage chamber 20 and the roll-shaped film storage chamber 22 from below. In the film unit according to the present invention, the film is previously
The film 16 is pulled out from the patrone 24, and the photographed films are sequentially stored in the patrone. Because of this, the film
16 is stored in the cartridge 24, loaded in the cartridge storage chamber 20, and then wound up and stored in the storage chamber 22 in a roll state. Alternatively, the film 16 may be unwound from the cartridge 24 in a dark room, put into the roll state 26, and then loaded into the storage chambers 20, 22 from the lower surface.

Between the cartridge storage chamber 20 and the roll-shaped film storage chamber 22 of the unit main body 10, there is a flat connecting portion 25, and this connecting portion 25 is formed with an exposure frame (not shown). A rectangular frame body 28 is formed around the cartridge storage chamber 20, the roll-shaped film storage chamber 22, and the connecting portion 25, and the lower surface of the frame body 28 is a film storage chamber 20, 22 for loading the film 16. An opening communicating with the openings 20A and 22A is formed. A hoisting knob 30 is pivotally supported on the left side of the unit body 10 in FIG. 1 in the upper part of the cartridge storage chamber 20, and a fork (not shown) is formed on a rotating shaft of the hoisting knob 30, and a spool of the cartridge 24 is provided. It is adapted to engage the shaft 32. Therefore hoisting knob
By rotating 30 in the direction of the arrow in the figure, the photographed film 16 is stored from the roll-shaped film storage chamber 22 into the cartridge 24.

In addition, the unit body 10 has a number-of-photos display plate 34 and a locking lever.
An imaging mechanism including 36, a shutter drive lever 38, a shutter blade 40, a driven sprocket 108, and the like is provided. FIG. 3 shows the detailed structure of this photographing mechanism. The shutter button 64 shown in FIG. 3 is rotatably attached to the left side of the front cover 12 in FIG. 1 around the shaft 100, and the rod 102 extends rearward integrally with the shutter button 64. Has been formed.

On the other hand, a locking lever 36 is supported on the main body 10 so as to be rotatable around 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, whereby the locking lever 36 is urged to rotate clockwise about the shaft 104. Has been done. 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 pushed down, the shutter button 64 rotates about the shaft 100, and the locking lever 36 is rotated counterclockwise by the rod 102 against the biasing force of the spring 106. .

Further, the locking lever 36 is formed with a winding stop claw 36B, and the winding stop claw 36B is fitted to the outer peripheral portion 30A of the winding knob 30 so that the winding knob 30 cannot be rotated after the film is wound. .

The film 16 has perforations 16A, 16A, ... Formed therein, and the perforations 16A, 16A, ... Have eight holes and correspond to one film frame. A driven sprocket 108 is engaged with the perforations 16A, 16A, .... The driven sprocket 108 is adapted to feed one frame of film in one rotation, so that the driven sprocket 108 has eight teeth. A cam 110 is provided coaxially with the driven sprocket 108.
The claw 36C of the locking lever 36 comes into contact with the. That is, when the film 16 is wound as shown by the arrow, the driven sprocket 108 rotates counterclockwise as shown in the figure, and the cam 110 also rotates counterclockwise. When the cam 110 rotates counterclockwise, the pawl 36C of the locking lever 36 is gradually pressed and rotated counterclockwise, which causes the locking lever 36 to rotate.
It will rotate counterclockwise against the urging force of 6.

A shutter drive lever 38 is rotatably supported on the unit body 10 about a shaft 112, and is urged counterclockwise by a spring 106. That is, the other end 106B of the spring 106 is brought into contact with the spring receiver 38A of the shutter drive lever 38,
As a result, the shutter drive lever 38 is urged to rotate counterclockwise. The shutter drive lever 38 contacts the projection 36D of the locking lever 36 as shown in FIG. 1, and is thus held at the position shown in FIG. 1 against the counterclockwise biasing force of the spring 106. The shutter drive lever 38 has an L-shaped bent piece 38B.
Is formed, and the tip of the bent piece 38B faces the shutter blade 40 as shown in FIG. Therefore, the locking lever
When the projection 36D of 36 is disengaged from the shutter drive lever 38, the shutter drive lever 38 is rotated counterclockwise by the biasing force of the spring 106 to open and close the shutter blade 40. That is, the shutter blade 40 is rotatably supported about the shaft 40A, and is urged counterclockwise by the spring 40B so as to abut 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 bending piece 38B, whereby the shutter blade 40 is opened, and the photographing is performed. The exposure is done. When the bent piece 38B of the shutter drive lever 38 rides on the claw 40C of the shutter blade 40, the shutter blade 40 is pulled back by the spring 40B, and the photographing opening 42 is formed.
Close. A shutter charging cam 114 is provided coaxially with the driven sprocket 108, and after the shutter drive lever 38 opens and closes the shutter blade 40, its claw 38 fits into the notch 114A of the cam 114. Cam 114 is a driven sprocket 1
Since it is provided coaxially with 08, it rotates when the film 16 is wound, and returns the shutter drive lever 38 to its original position.

Further, the driven sprocket 108 is coaxially provided with a one-tooth gear 116, and the one-tooth gear 116 meshes with a gear 34A formed on the outer periphery of the photograph number display plate 34. Therefore, when the driven sprocket 108 makes one rotation, the one-tooth gear 116 also makes one rotation,
The display plate 34 is advanced by one shot, and the number of shots is displayed.

A plate-shaped lens holder 44 shown in FIG. 1 is provided on the front surface of the shutter blade 40. The lens holder 44 has a photographing opening 42.
Is formed with a position concave portion 46, and a plastic taking lens 48 is arranged in the concave portion 46.

Next, the front cover 12 will be described. Front cover 12 top plate 60
A shutter button opening 62 is formed on the left side of the, and a shutter button 64 is arranged in the opening 62. When the shutter button 64 is pushed down, the shutter drive lever 38 of the above-mentioned photographing mechanism is activated. Further, a window 66 for displaying the number of shots is formed in the upper plate 60, and the number of shots of the display plate 34 is displayed in this window 66. 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 on the front surface 68, and the circular hole 72 is formed so as to be positioned on the optical axis of the photographing lens 48. Rectangular small holes 76, 76 are formed on the left and right sides of the imaging circular hole 72. The rectangular small holes 76, 76 are formed at positions corresponding to the locking claws 78, 78 formed on the unit body 10. Unit body 10
It is used for temporary fixing when connecting the to the front cover 12.

Next, the structure of the back cover 14 will be described. The back cover 14 is composed of a back plate 80 and a bottom plate 82 in a substantially L shape. A finder opening 84 is formed on the back plate 80.
84 is formed at a position corresponding to the light shielding cylinder 70 of the front cover 12. Further, a laterally long opening portion 86 is formed in the back plate 80, and a part of the hoisting knob 30 is exposed after assembly in the opening portion 86 as shown in FIG. Can be rotated. Furthermore, the back plate 80 has a curved film support surface.
88 is formed, and when the winding knob 30 is rotated, the film 16 moves along the film supporting surface 88. Further, when the back cover 14 is assembled to the unit body 10 on the bottom plate 80 of the back cover 14, the opening 20A is formed at the bottom of the substrate storage room 20 and the roll-shaped film storage room 22 located below the substrate 18. , 2
It will cover 2A. After the film 16 is stored between the cartridge 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. After that, the unit body 10 and the back cover 1
4. Further, the front cover 12 and the back cover 14 are fixed to each other by ultrasonic welding or the like.

According to the lens-fitted film unit according to the present invention constructed as described above, when the shutter button 64 located on the left side of the unit in FIG.
2 rotates the locking lever 36 counterclockwise to release the locked state with the shutter drive lever 38. As a result, the shutter drive lever 38 is rotated counterclockwise by the spring 106,
The shutter blades 40 are opened and closed, and the film 16 located in the exposure frame is exposed for photography. In this state, the pawl 36B of the locking lever 36 is separated from the winding knob 30, so that the winding knob 3
0 is free. When the winding knob 30 located on the left side of the unit in FIG. 2 is rotated, the cartridge shaft 32 is rotated and the exposed film 16 is stored in the cartridge 24. When the film 16 is fed, the driven sprocket 108 rotates as described above, and the cams 110, 114 and the one-tooth gear 116 rotate. When the cam 114 rotates, the shutter drive lever 38 is returned to its original position first, and then the locking lever 36 is rotated by the cam 110 to return to its original position, and the shutter drive lever 38 is locked. It is locked by the lever 38. At this time, the counter 34 is sent for one shot,
Displays the number of shots. As a result, the shutter charge operation is performed.

The sensitivity of the film used in this invention is ASA100, 200, 4
Any of 00, 1000, 1600, etc. may be used.

[Effect of device]

As described above, according to the lens-fitted photo film unit of the present invention, the film is pre-installed in the photo film unit in a state of being pulled out from the photo film container.
After the unit is used by the user, the film rewinding mechanism is not necessary because all the films are contained in the cartridge. Furthermore, since the film winding member is arranged in the direction in which the shutter button is provided with the diameter of the film winding member and the winding shaft in the film container, the structure is simple and the usability is good.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a lens-fitted film unit of the present invention, FIG. 2 is an assembled perspective view of a lens-fitted film unit, and FIG. 3 is a perspective view showing a detailed structure of a photographing mechanism of a film unit according to the present invention. is there. 10 …… Unit body, 12 …… Front cover, 14 …… Back cover, 16
…… 135 film, 30 …… winding knob, 32 …… winding shaft, 4
0 …… Shutter blade, 64 …… Shutter button.

Claims (1)

[Scope of utility model registration request] 1. A photographing mechanism such as a photographing lens and a shutter is provided in a light-tight case, and a roll-shaped film is loaded before the light-tight case is assembled, and the light-tight case is disassembled or damaged after photographing. In the lens-fitted film unit adapted to take out the photographed film, the film has one end fixed to a film core in a light-tight film container arranged in the winding section, and the other end formed into a roll shape. It is arranged in the film supply section, and the film core is rotated every time a picture is taken, and the film core is rolled into the light-tight film container. Is disposed on the side where the container exists, and the rotation shaft of the winding member that can be operated externally is directly engaged with the film winding core of the container. A film unit with a lens.