JPH0267544A - Film integrated type camera - Google Patents

Abstract

PURPOSE:To allow light shielding of the film winding chamber of the film integrated type camera with simple constitution by forming a light shielding piece integrally with a disconnecting part and bending the light shielding piece to provide light shielding to the film winding chamber at the time of disconnecting the film winding chamber. CONSTITUTION:The light shielding piece 18 is formed integrally with the disconnecting part 12 to a constitute the camera in such a manner that the light shielding of the film winding chamber 11 can be executed by bending the light shielding piece 18 at the time of disconnecting the film winding chamber 11. Namely, the point of a groove 17b is broken when the light shielding piece 18 is pushed by a finger or the tip of a screw driver. A film passage 6 communicating with the film winding chamber 11 is clogged by the light shielding piece 18 and is thereby shielded of light if a projection 19 is further pushed to be fitted into a small hole 20. The light shielding of the film winding chamber 11 is executed by the simple constitution in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an integrated film camera, such as a disposable camera, in which film is loaded at the manufacturer's end.

(Prior Art) Recently, film-integrated cameras have come on the market that have a built-in film and allow users to easily take pictures.

This type of camera is typically subjected to development processing after shooting, but in order to facilitate this development processing and to make the camera more compact, the applicant created a separate system between the film winding chamber and the film exposure chamber. He proposed a camera in which the film roll was separated from the camera so that it could be handled like a regular cartridge.
No. 327).

In this type of camera, light shielding after separating the film winding chamber is always a problem, but in this regard, in conventional cameras, a light shielding means such as a telescope is provided at the separating section. However, this increases the number of parts and also increases the number of man-hours required to attach the light shielding means.

(Object and Structure of the Invention) The present invention has been made in view of the above, and an object of the present invention is to make it possible to shield the film winding chamber of a film-integrated camera from light with a simple structure, and to achieve that object. A light shielding piece is formed integrally with the separation portion, and when the film winding chamber is separated, the light shielding piece is bent to shield the film winding chamber from light.

(Example) The present invention will be explained below based on the drawings.

FIG. 1(a) is a perspective view of a film-integrated camera according to the present invention, and FIG. 1(b) is a sectional view thereof.

In FIG. 1(a), l is a photographing lens, 2 is a release button, 3 is a front cover of the camera, 4 is a finder, and 5 is a film advance knob.

Further, in FIG. 1(B), 6 is the camera body, 7 is the back cover of the camera, and β is the film.

One side of the film 8 becomes a pull winding part 8a and is stored in the film storage chamber 9, and the other part is locked to the winding shaft 1O and stored in the film winding chamber 11. @The upper shaft 10 is connected to the winding knob 5, and the film 8 is wound onto the winding shaft IO by operating the winding knob 5. To load the film 8, move the pull winding part 8a to the film storage chamber 9.
In addition, after the winding shaft 1O is housed in the film winding chamber 11, the back cover 7 and the camera body 6 are bonded or welded at the joints 7a and 7b. 12 is a separation section provided between the film winding chamber 11 and the film exposure chamber 13, and when the film is wound into the film winding chamber 11 after shooting, as shown in FIG. The film winding chamber 11 can be separated at a separation part 12. In this embodiment, the film winding chamber 11 has the same shape as a cartridge system for 35 mm film, and the dimensions are such that it can be hung in a separated state in a current automatic processing machine.

Note that in the drawings, the shutter mechanism and other mechanical mechanisms of the camera are omitted because they are not related to the gist of the present invention.

FIG. 3 is an enlarged sectional view of the cut-off part 12, and as shown in FIG.
A narrow portion 15 is formed with a thin wall portion 14 remaining between the film exposure chamber 13 and the film exposure chamber 13, and a groove 14a is formed in the thin wall portion 14. The groove 14a is for making the thin wall part 14 easy to break, and instead of the groove, a small hole, perforation, etc. may be formed. 17 is formed. A groove 17a and a groove 17b having a deeper cut than the groove 17a are formed in the thin portion 17, and a portion sandwiched between the groove 17a and the groove 17b serves as a light shielding piece 18. Note that the thickness of the thin wall portion 14.17 is 14a% of the groove.
Even in the areas where 17a and 17b are formed, there is a distance of at least 0.5 mm, and there is no problem in terms of light shielding of the film.

A protrusion 19 is formed on the film passage 16 side of the light shielding piece 18, while a small hole 20 into which the protrusion 19 fits is formed on the camera body side. Two sets of these are provided so as to be separated from each other in the width direction of the film 8 so as not to contact the film 8.

Now, after all the shooting is completed, use the winding knob 5 to move all of the film 8, except for the end part, into the film winding chamber 11.
be rolled up. ``Leaving a small portion of the end of the film is for the convenience of later development work, but for this purpose, for example, a locking claw may be provided at the end of the film 8, or a film counter mechanism may be used to wind the film. The winding knob 5 may be prevented from rotating at the predetermined position in the final stage.

FIG. 5 is a diagram showing an example of a device for leaving the trailing edge of the film. In FIG. It is a lock lever to stop the
The lock lever 31 has a claw portion 31a that is attached to the lock gear 30.
is biased in the direction of jumping into. When winding the film, as shown in Figure 5 (a), the lock lever 31 is
One end 31b is pressed by the film, so that the claw portion 31a is located away from the lock gear 30.

Therefore, the winding shaft lO can be rotated without being locked. At the final stage of film winding, one end 31b of the lock lever 31 is released from the film stacker section, the lock lever 31 rotates clockwise in the figure, and its claw 31a jumps into the lock gear 30. In this way, the winding shaft lO is locked and cannot rotate any further, so that the winding of the film 8 is completed, leaving only the end portion.

Next, when the light shielding piece 18 is pressed with a finger or the tip of a screwdriver, the groove 17b is destroyed, and when pressed further, the protrusion 19 is fitted into the small hole 20 as shown in FIG. 3 (b). A film passage 16 leading to the film winding chamber 11 is blocked by a light shielding piece 18 to block light. Moreover, the light shielding piece 18 maintains this state by fitting the protrusion 19 into the small hole 20. However, even if the protrusion 19 and the small hole 20 are not provided here, the length of the light shielding piece 18 can be made slightly longer than the width of the film path 16, so that when the light shielding piece 18 is bent, its tip will push against the thin part 14. The light shielding piece 18 may be expanded to block the film winding chamber 11, and the light shielding piece 18 may be held by friction with the thin portion 14.

Next, as shown in FIG. 2, the front cover 3 is removed from the back cover 7 at the joint 7b. At the joint 7b, the camera body 6 and the back cover 7 are strongly joined, but the front cover 3 and the back cover are The connection with the front cover 7 is relatively weak, and the user can easily remove the front cover 3 by prying it with a screwdriver or the like.

Further, a groove may be formed in this joint portion 7b so that a coin or the like can be inserted to pry open the front cover.

Finally, when force is applied in the direction of the arrow in FIG. 2, the thin wall portion 14 is destroyed at the groove 14a, as shown in FIG. 3(c), and the film winding chamber 11 can be easily separated. . After cutting it out, you can send it for development just like a regular cartridge. Also, during film development, the film winding chamber 11 has the same shape as the cartridge, making it easy to handle.
Since the end portion of the film is also left intact, it is easy to pull out the film and development work is also easy. Note that when pulling out the film, if the protrusion 19 and the small hole 20 are disengaged and the light shielding piece 18 is opened, the film will not be damaged.

Further, in the embodiment, the separation portions (14a, 17b) are provided at positions away from the film path 16. Therefore, when the film is pulled out during development, the film will not be damaged by hitting the separation portion.

As described above, according to the present invention, it is possible to block light by bending the light-shielding piece provided integrally with the cut-off part, so that film winding can be carried out with an extremely simple structure without providing a light-shielding member such as a telescope. It will be possible to block out light in the room.

FIG. 4 is a sectional view showing the cut-off part of another embodiment.
In the figure, the same components as in FIG. 3 are designated by the same reference numerals.

In FIG. 4(A), a groove 14b is formed in the thin part 14, and a thin part 17 is also provided in the opposing part of the back cover 7, and a groove 17c and a light shielding piece 21 are formed in this thin part 17. ing. A protrusion 22 is formed on the film passage 16 side of the light shielding piece 21, and a small hole 23 into which the protrusion 22 fits is formed in the thin wall portion 14 of the camera body. Similar to the embodiment shown in FIG. 3, two sets of these are provided so as to be separated from each other in the width direction of the film 8 so as not to touch the film 8.

Now, in the previous embodiment, the film passage 16 leading to the film winding chamber 11 was blocked by the light shielding piece 18 to block light, but in this embodiment, the film 8 is sandwiched between the light shielding piece 21 and the thin part 14, and the film passage 16 is blocked. Block out light by squeezing. That is, after photographing is completed, the user presses the light shielding piece 21 from the back cover 7 side with a finger or the tip of a screwdriver. Then, the thin part 17 of the back cover 7 forms the groove 17C.
Destroyed from the point. When the light-shielding piece 21 is further pushed, the protrusion 22 and the small hole 23 fit together as shown in FIG. . Moreover, the light-shielding piece 21 is held in a light-shielded state by fitting the protrusion 22 and the small hole 23.

Next, as shown in FIG. 2, when the front cover 3 is removed and force is applied in the direction of the arrow, the thin part 14 of the camera body is destroyed starting from the groove 14b, as shown in FIG. 4 (c). The film winding chamber 11 can be easily separated. After separation, processing is performed in the same manner as in the first embodiment.

Incidentally, the camera body 6 is preferably made of a material that is easily broken in order to further improve its separation function.

Examples of this easily broken material include polystyrene resin,
High-impact polystyrene resin, ABS resin, glass fiber-containing polycarbonate resin, AS resin, methacrylic resin, and acrylic resin are superior in terms of price, strength, and brittleness when folded, but there is no need to be limited to these. do not have.

In the above embodiment, the light-shielding pieces 17 and 21 are held by fitting the protrusions and small holes, but if the light-shielding pieces are made of a material that deforms plastically, the light-shielding state can be maintained without using protrusions or small holes. You can keep it.

By the way, it has already been explained that the winding shaft lO is connected to the winding knob 5, but if both are integrally molded as shown in FIG. 6(A), the number of parts can be reduced.
It also makes it easier to assemble the camera. Moreover, there is no need to adjust the engagement between the winding shaft lO and the winding knob 5. Also, Figure 6 (b)
If a flange 32 is provided at the lower end of the winding shaft lO as shown in FIG. 2, centering during assembly becomes easier.

Note that when the winding shaft is attached to a camera, light shielding becomes a problem, but if a light shielding protrusion as shown in FIG. 7 is provided around the winding shaft 10, light from outside will leak into the film winding chamber. Never.

Further, it is preferable to form a thin wall portion 5a on the winding knob 5 as shown in FIG. It is separated and has the same shape as a regular cartridge, making it easier to develop.

(Effects of the Invention) As explained above, according to the present invention, since the light shielding piece is formed integrally with the separation part, the film winding chamber can be light shielded without providing a separate light shielding member, so the structure is simple. This provides the effect of shielding the film winding chamber from light. Therefore, it is possible to provide a film-integrated camera that is lower in cost and easier to develop.

[Brief explanation of the drawing]

FIG. 1(A) is a perspective view of a film integrated camera according to the present invention, FIG. 1(B) is a sectional view thereof, FIG. 2 is a sectional view showing a state in which the film winding chamber is separated, and FIG. 3 is a separated portion. FIG. 4 is an enlarged sectional view of a cutaway portion of another embodiment of the film-integrated camera according to the present invention, and FIGS. 5 to 8 are views showing further different embodiments. 12... Separation part, 18.21... Light shielding piece Fig. 3

Claims (1)

[Claims] In a film-integrated camera in which a film is built-in in advance and a separation part is provided between a film winding chamber and a film exposure chamber, a light-shielding piece is formed integrally with the separation part, and when the film winding chamber is separated. A film integrated camera characterized in that the film winding chamber can be shielded from light by bending the light shielding piece.