JPH0449620Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a container for storing photographic film, specifically a film packaging container equipped with photographic functions such as a photographic lens and a shutter (hereinafter referred to as a "lens-equipped film film container"). (referred to as "Unit").

[Conventional technology]

The applicant has created a unit that has a built-in simple shutter, self-sealing mechanism, etc., so that you can easily enjoy taking photos even if you do not own a camera.It comes with a lens that has 135 film with a cartridge already built in. A film unit is provided. Therefore, the user can enjoy photography simply by purchasing this. After shooting, all you have to do is hand in the lens-equipped film unit to a developing shop, and there is no need for any troublesome operations such as taking out the cartridge.

Incidentally, such a lens-fitted film unit is provided with a counter mechanism for displaying the number of shots or the number of remaining frames. The counter mechanism that has been used up until now has the effect that when the film is transferred by operating the film winding knob,
The film counter disk is structured to rotate one scale at a time in conjunction with the transfer of one frame of the film, and the number of frames to be taken or the number of frames remaining on the film is displayed.

[Problem that the invention attempts to solve]

However, when the above-mentioned film winding knob, film counter disc, or interlocking mechanism thereof is incorporated into a lens-fitted film unit, problems arise in that the unit body becomes larger and the manufacturing cost increases.

[Purpose of invention]

The present invention was devised in view of the above circumstances, and it is an object of the present invention to provide a lens-fitted film unit that is compact and has a low manufacturing cost, and also allows the number of remaining frames of the film stored in the unit body to be easily determined. With the goal.

[Means for solving problems]

In order to achieve the above object, a winding shaft that is rotated when winding a film, a string that is wrapped around the winding shaft and has a number indicating the number of film frames written thereon, and a string that can be pulled out from the winding shaft to The camera is equipped with a fixed-length feed mechanism that locks the winding shaft when the film is rotated to wind a certain amount of film, and unlocks the winding shaft when photography is completed.

[Effect]

According to the above configuration, by pulling the string, one frame of film can be wound up, and the number of captured frames or the number of remaining frames can be determined from the number displayed on the string.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

〔Example〕

FIG. 2 shows the structure of an embodiment of the lens-equipped film unit of the present invention. This lens-equipped film unit includes a front case 3, a main body base 4, a 135 film 6 wound around a cartridge 5, and a back cover. It consists of 7 main blocks. After these four blocks are fitted together, they are fixed by ultrasonic welding or the like so that the cartridge 6 cannot be removed by the user.

A photographic lens 10 and a viewfinder 11 are located on the front side of the front case 3, and a release button 12 is located on the top.
is provided. On the side of the side where the release button 12 is provided, there is a string 13, which will be described in detail later.
An opening 14 is formed through which the material is inserted.

A semi-cylindrical cartridge chamber 15 and a film roll chamber 16 are formed on both sides of the main body base 4 which is fitted onto the back surface of the front case 3. A connecting portion 17 is provided between the cartridge chamber 15 and the film roll chamber 16, and a rectangular photographing opening (not shown) is formed inside the connecting portion 17. Further, an exposure opening 18 shown by a broken line is formed in this connecting portion 17, and a shutter blade 20 biased counterclockwise by a spring 19 is provided on the front surface of the opening 18 for exposure.
is provided. A pin 21 is provided above the opening 18.
A shutter blade 20 biased by a spring 19 comes into contact with the shutter blade 20 and is locked so as to cover the opening 18 .

The cartridge 5 is provided with a cartridge shaft 5a, and one end of the film 6 described above is attached to the cartridge shaft 5a. The film 6 is pulled out from the cartridge 5 and stored in a film roll chamber 15 as a rolled unexposed film roll 6a. In addition,
The film 6 and cartridge 5 used are those specified by the international standard (ISO: 1007-1979 edition).

A winding shaft 22 is installed in the upper part of the cartridge chamber 15.
is provided. A flange 23 is integrally provided at the center of the winding shaft 22, and a tooth row 23a is formed on the outer periphery of the flange 23. This tooth row 23a has a winding stopper claw 24 of the locking lever 24.
a (see FIG. 3) and a check claw 25 provided at the upper part of the cartridge chamber 15 are engaged with each other. This non-return pawl 25 forms a one-way clutch with the tooth row 23a, and this one-way clutch prevents the winding shaft 22 from being rotated clockwise. Further, a fork (not shown) is formed at the lower part of the winding shaft 22 to engage with the cartridge shaft 5a. Furthermore, the above-mentioned string 13 is wound around the upper part of the winding shaft 22.

A handle 13a is provided at the tip of the string 13 to make it easier to pull the string 13. Also, this string 1
3 has a number written thereon, and the number displayed near the opening 14 allows the number of remaining frames of the film 6 stored in the main body base 4 to be known. In this embodiment, a handle 13a is attached to the tip of the string 13, but the tip may be looped to function as a strap to make it easier to grasp.

The locking lever 24 is rotatably supported by a shaft 26 implanted in the main body base 4, as shown in FIG. This locking lever 24 is provided with a bent piece 24b that extends downward, and this bent piece 24b has a spring 2 that biases the locking lever 24 clockwise.
7 and the rod 1 provided on the release button 12.
2a are engaged. Further, a locking pawl 24 is provided at the tip of the locking lever 24 opposite to the winding pawl 24a.
c is formed. Furthermore, this locking lever 2
4 is provided with a protrusion 24d and a notch 24e.

A notch 2 is provided in the cam 28 that engages with the locking pawl 24c.
8a is formed. Further, a shutter charge cam 30 having the same shaft 29 is provided below the cam 28, and the height of the cam surface gradually increases from the shaft 29. Furthermore, at the bottom of the shaft 29 is a sprocket 33 consisting of eight teeth.
are integrated. Note that when the sprocket 33 rotates once and eight perforations 6b formed on the film 6 are fed, one frame of the film 6 is transferred.

The main body base 4 is provided with a shutter drive lever 35 that rotates around a shaft 34 implanted therein. This shutter drive lever 35 is connected to the arm 3.
5a, a shutter drive pin 35b, and a shutter locking pin 35c are each integrally formed and biased counterclockwise by a spring 27. arm 35
A is pressed by the gradually increasing cam surface of the cam 30 when the film 6 is wound up. Further, the shutter locking pin 35c is engaged with the locking lever 24, and the shutter drive pin 35c is engaged with the shutter blade 20, respectively.

The back cover 7 is formed into a substantially L-shape by a back plate 36 and a bottom plate 37. A viewfinder opening 38 is formed in the back plate 36. Further, a curved film support surface 39 is formed on the back plate 36, and when the string 13 is pulled, the film 6 moves along this film support surface 39 from the film roll chamber 16 to the cartridge chamber 15. , and becomes involved in Patrone 5.

FIG. 1 shows a lens-fitted film unit of the present invention packaged in a gift box. This cosmetic case 40 is made of cardboard with patterns, designs, etc. printed on it, and on the side thereof there are marks at positions corresponding to the photographing lens 10, viewfinder 11, release button 12, and opening 14 formed on the unit body 2. opening 4
1 to 44 are formed. Therefore, for photographing, the unit main body 2 is used in its packaged state without being removed from the cosmetic case 40. Note that it is convenient to print a memo entry field 45 on the side of the cosmetic box 40, such as a margin so that the provider's name or mailing address in the case of a premium product can be written.

The operation of the lens-fitted film unit of the present invention constructed as described above will be explained with reference to FIGS. 2 and 3. When photographing, first confirm the subject through the viewfinder 11, and then press the release button 12. The rod 12a is rotated counterclockwise, and the locking lever 24 is applied to the biasing force of the spring 27 via the bent piece 24b. Rotate counterclockwise against the resistance. As a result, the shutter locking pin 3
The protrusion 24d that is in contact with the cam 5C is unlocked, the shutter drive lever 35 rotates counterclockwise, and the arm 35a comes into contact with the outer periphery of the cam 30 and stops. At this time, the shutter drive pin 35b moves from left to right on the upper front surface of the connecting portion 17. During this movement, the tip of the shutter blade 20 is kicked off, and the shutter blade 20, which is biased counterclockwise by the spring 19, is rotated clockwise. This results in
Opening 18 is opened. When the shutter blade 20 is disengaged from the shutter drive pin 35b, the shutter blade 20 is rotated counterclockwise by the bias of the spring 19 to cover the opening 18.

The light from the subject passes through the photographic lens 10,
The film 6 positioned at the exposure opening of the connecting portion 17 is exposed through the opened opening 18. Then, when you grab the handle 13a and pull out the string 13,
The winding shaft 22 is rotated counterclockwise. This winding shaft 22 is connected to the cartridge shaft 5 via a fork.
a counterclockwise, and rotate this cartridge shaft 5a.
The film, which has one end attached to it, is transported in the direction of the arrow in FIG. The transferred film rotates the sprocket 33 counterclockwise via the perforation 6b.

The sprocket 33 connects to the cam 2 via the shaft 29.
8, 30 counterclockwise. When these cams 28 and 30 rotate, first, the shutter drive lever 35 is rotated clockwise via the arm 35a that is in contact with the cam 30, and one end of the shutter drive lever 35 passes over the tip of the shutter blade 20 to form a connecting part. 17 from right to left, and the other end slides on the side surface of the notch 24e. When one end of the latter slides out of the notch 24e, the locking lever 24 rotates clockwise under the bias of the spring 27, and the locking pawl 24c engages the outer peripheral surface of the rotating cam 28. comes into contact with.

When the shaft 29 is further rotated, the engagement between the arm 35a and the cam 30 is temporarily released on the discontinuous outer circumferential surface of the cam 30, and the shutter drive lever 35 is rotated counterclockwise. It comes into contact with the side surface of the portion 24d. At the same time, the locking pawl 24c fits into the notch 28a of the cam 28, and the winding pawl 24a meshes with the tooth row 23a of the flange 23. Due to this engagement, the rotation of the winding shaft 22 is stopped, and the string 1
3 becomes unable to pull out.

Note that after winding the film 6, the string 13
Since the strap 13 cannot be pulled out, the string 13 can also be used as a strap when carrying the lens-fitted film unit.

Further, the exposed film 6 is rolled up into the cartridge 5, and the unexposed film 6 transferred from the film roll chamber 16 is positioned in the exposure opening of the connecting portion 17. As described above, winding of the film 6 and shutter charging are performed.

By operating the string 13 and the release button 12 in this manner, it is possible to sequentially photograph a predetermined number of frames. Then, when the number on the string 13 becomes "0", the shooting of all frames is completed.
The lens-fitted film unit that has become used in this way can be submitted as is to a photo lab.

[Effect of idea]

As explained in detail above, the lens-fitted film unit of the present invention has a simple structure in which the film is wound with a numbered string, so it can be used as an inexpensive and compact lens-fitted film unit that allows you to know the number of frames remaining on the film. units can be provided.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention. FIG. 2 is an exploded perspective view shown in FIG. 1. FIG. 3 is a perspective view showing the main parts of the present invention. 3...Front case, 4...Body base, 5...Patrone, 5a...Patrone shaft, 6...Film, 7...Back cover, 10...Photographing lens, 13...
String, 14... Opening, 22... Winding shaft, 24...
Locking lever, 35... Shutter drive lever.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a lens-equipped film unit that incorporates unexposed film, an exposure mechanism, and a self-tapping mechanism, a winding shaft that is rotated to wind the exposed film, and this winding shaft A string is wrapped around the camera and has a number indicating the number of film frames written on it, and when the string is pulled out, the winding shaft is rotated, and when the film has been transferred by one frame, the winding shaft is locked, and when the shooting is completed, the winding shaft is locked. A film unit with a lens characterized by being provided with a fixed length feeding mechanism for releasing the lock of the shaft. (2) The lens-fitted film unit according to claim 1, wherein the string also serves as a strap.