JPH06130557A - Film cartridge and film unit with lens - Google Patents

Abstract

PURPOSE:To surely shield light when a cover member which is freely opened and closed is integrated in a film cartridge and the film cartridge is taken out from a film unit with a lens. CONSTITUTION:A semicircular engagement hole 7 is provided on a bottom cover 5a integrally formed on the back cover 5 of a unit main body 2. A projecting piece 18C engaged with the hole 7 and a spring 19 for turning the cover member 18 are provided on one end of the cover member 18 of the film cartridge 10. Then, the cover member 18 is turned to a closing position by the resiliency of the spring 19 at the same time that the cover 5a is opened little. Even when the cartridge 10 is taken out in a light room, the external light is shielded by the cover member 18 and it does not enter the inside of the cartridge 10 through a film passage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film cartridge having a lid member for opening and closing a film passage and a lens-equipped film unit using the film cartridge.

[0002]

2. Description of the Related Art In a conventional 135 film cartridge, a cartridge body is composed of a body and a cap made of a thin metal plate, and a resin spool is wound around the cartridge and stored in the cartridge body. Further, a flocking cloth called a telemp is attached to the entrance and exit of the film formed on the main body of the Patrone to shield the inside of the main body of the Patrone from light.

Recently, the reuse of parts and raw materials has become popular in various manufacturing fields, but it cannot be said that the above film cartridge has good recyclability. This is because the conventional film cartridges are composed of various materials, so even if they are reused as raw materials, they must be decomposed once and separated into individual materials, which prevents a decrease in productivity. I couldn't do it. From this point of view, the Patrone body is made of resin like the spool,
Further, there has been proposed a film cartridge that also incorporates a resin-made lid member for shielding the entrance and exit of the film.
According to this, after the taken film is taken out, the cartridge main body can be melted and pelletized together with the spool, and the reuse as a raw material can be efficiently performed.

On the other hand, a lens-fitted film unit is widely used in which a film cartridge is built into the unit main body at the time of manufacture so that the user can easily take a picture by simply performing a photographing operation. In the lens-fitted film unit, the film that has already been taken is wound into the cartridge body by the film winding operation after the film is taken. Then, the used lens-fitted film unit is directly collected at the developing place. At the photo lab, you can take out the film cartridge with the film already taken from the film unit with lens.In the conventional film film cartridge, the entrance and exit of the film is shielded by the teremp, so you can take out the film cartridge in the light room. .

[0005]

However, as described above, in order to improve the reusability, the film cartridge main body is made of resin, and the film entrance and exit is opened and closed by the lid member. When used in a unit, the photo film cartridge must be securely closed before taking out the film cartridge from the lens-attached film unit, and outside light will enter the film entrance and get caught in the cartridge body. Photographed film is exposed to outside light. Of course, there is no problem if the taking-out work is performed in a dark room. However, considering that a large number of lens-fitted film units are used, an increase in dark room work is a major problem in terms of work efficiency.

The present invention has been made in view of the above circumstances, and when the cartridge in which the photographed film is wound is taken out from the lens-fitted film unit, the lid member is securely closed without using a complicated interlocking mechanism. It is an object of the present invention to provide a film cartridge and a lens-fitted film unit that are moved to the right.

[0007]

In order to achieve the above-mentioned object, the present invention rotates between a closed position for shutting off the film passage and an open position for opening the film passage, as claimed in claim 1. A free lid member and a spring for urging the lid member to the closed position are installed in the cartridge body, and at one end of the lid member, the lens film unit is attached to the lens film unit when the film cartridge is stored in the lens film unit. An engaging portion is provided which engages with the provided engaging portion and holds the lid member in the open position against the spring.

Further, as described in the second aspect of the present invention, the engaging portion is formed with a guide slant surface for engaging with the engaging portion provided in the lens-fitted film unit, and the film cartridge is axially moved. When the lens-equipped film unit is loaded into the lens-equipped film unit, the engaging portion and the guide slope are slidably engaged with each other so that the lid member is rotated to the open position.

Further, in the lens-fitted film unit used by loading the above-mentioned film cartridge, as described in claim 3, the film cartridge is axially loaded on the upper surface or the lower surface of the cartridge chamber, and inside the cartridge chamber. An engaging portion for engaging one end of the lid member exposed on the upper surface or the lower surface of the loaded film cartridge and holding the lid member in the open position against the spring is formed.

[0010]

1 shows an example of a main body (unit main body) of a lens-fitted film unit according to the present invention and a film cartridge loaded and used in the same, a unit main body 2 is a resin-molded main body base 3 And its front,
It consists of a front cover 4 and a rear cover 5 which are placed on the back surface.
In addition to a shutter mechanism including shutter blades, a film winding mechanism is incorporated in the main body base 3. The front cover 4 covers the shutter mechanism and the like assembled in the main body base 3, and the rear cover 5 has a function of light-tightly covering the back side of the main body base 3 and contacting the back surface of the film to hold the film on the exposed surface. .

The rear cover 5 is integrally provided with a bottom plate 6 for covering the bottom surface of the main body base 3, but a notch 6a is formed on one end side to expose the bottom surface of the cartridge chamber 8 provided in the main body base 3. is doing. The notch 6 is formed in the rear cover 5.
A bottom lid 5a that covers a is integrally formed, and can be opened and closed via a thin hinge portion 5b. The bottom cover 5a normally covers the notch 6a, and the cartridge chamber 8 is kept light-tight. The bottom lid 5a is opened when taking out the film cartridge 10 in which the photographed film is wound from the used unit main body 2.

A half-moon shaped engagement hole 7 is formed in the bottom lid 5a. The engaging hole 7 is located at a position where the film cartridge 10 is engaged with one end on the lower side of the lid member 18 provided in the film cartridge 10 when the film cartridge 10 is loaded in the cartridge chamber 8 and does not penetrate the bottom lid 5a. is there. The engaging hole 7 holds the lid member 18 in the open position when the film cartridge 10 is loaded, and when the film cartridge 10 in which the photographed photo film 16 has been wound is taken out, the lid member 18 is placed in the closed position. Rotate.

The film cartridge 10 incorporated in the unit body 2 is, as shown in detail in FIG. 2, upper and lower cases 10a and 10b made of resin molding, and a film 16 rotatably housed in the case. It consists of a spool 17 attached and a lid member 18. Lid member 18
Is rotatably incorporated in the film passage 20 formed at the joint between the upper and lower cases 10a and 10b. A slit 18a is formed in the lid member 18, the slit 18a opens the film passage 20 when the lid member 18 is in the rotation position of FIG. 3A, and the slit 18a is in the rotation position of FIG. 3B. 20 is light tightly closed.

One end of the lid member 18 has a thin shaft diameter, and a spring 19 is wound around the outer circumference of the thin shaft 18b. Both ends of the spring 19 are inserted and fixed in a hole formed in the lid member 18 and a hole formed between the upper and lower cases 10a and 10b. The spring 19 is normally attached so as to hold the lid member 18 in the closed position as shown in FIG. 3B when no external force is applied. The end surface of the thin shaft 18b is exposed from the side surface of the film cartridge 10, and the tip thereof is provided with a protruding portion protruding from the side surface of the film cartridge 10, and the protruding portion is used as a protruding piece 18c. The protrusion 18c has a half-moon-shaped cross section and is integrally formed with the lid member 18. On the flat surface portion 18d of the protruding piece 18c, a guide slope 18e is formed by cutting out on the basis of a diagonal line. Due to the guide slope 18e, the projecting piece 18c smoothly engages with the half-moon shaped engaging hole 7 formed in the bottom lid 5b as shown in FIG.

The operation of the above configuration will be described. The unit main body 2 is assembled in a dark room, and the film cartridge 10 is incorporated during the assembly. When the film cartridge 10 is assembled, the lid member 18 is rotated to the open position shown in FIG. 3 (A) while compressing the spring 19, and the film 16 is pulled out from the film cartridge 10 to the full and the main body base 3 It is stored in the film roll room. At this time, the lid member 18 sandwiches the film 16 with the film passage 20 by the repulsive force of the spring 19. Also, the rear cover 5 is not yet attached,
Further, since the bottom lid 5a is in the opened state as shown in FIG. 1,
Film patrone 10 and rolled film 1
6 can be stored from the bottom side of the main body base 3.

Film cartridge 10 and film 16
After loading the main body base 3 and closing the bottom lid 5a, the projecting piece 18c protruding from the side surface side of the film cartridge 10.
Engages with the half-moon shaped engagement hole 7 provided in the bottom lid 5a. However, since the lid member 18 is slightly rotated to the closed position side with the film 16 sandwiched by the repulsive force of the spring 19, the positions of the half-moon shaped protrusions 18c and the linear portions of the engagement holes 7 do not match. Therefore, it becomes difficult to engage.
In order to solve this, the projecting piece 18c is provided with a guide slope 18e. When the bottom lid 5a starts to be closed, first the guide slope 1
8e engages with the engagement hole 7 and continues to close the bottom lid 5a, the lid member 18 rotates, and when the bottom lid 5a is completely closed, the engagement hole 7 and the flat surface portion 18d of the protruding piece 18c are separated from each other. When engaged, the lid member 18 is in the open position as shown in FIG.

After the unit body 2 is assembled in this way,
The lens-fitted film unit is completed by covering the surface with a paper box with a cosmetic print. As is well known, an opening is formed in a required portion of a paper box, and the lens-fitted film unit is used as it is in the paper box. When the dial 25 (FIG. 4) for the winding operation is operated every time the photographing operation is performed, the spool 17 of the film cartridge 10 is rotated, and the film 16 having been photographed is the film cartridge 10.
Get caught in. Then, when the dial 25 is turned after the last frame is photographed, all the photographed films 16 are caught in the film cartridge 10.

The used lens-fitted photo film unit is directly recovered at the developing station, where the paper box is removed and the film cartridge 10 is taken out from the unit main body 2. This take-out operation is performed in a bright room, and the bottom lid 5a is first opened. The bottom lid 5a is a film cartridge 1.
When the protruding piece 0 and the engaging hole 7 of the bottom lid 5a are released to the extent that they are disengaged from each other, the lid member 18 is urged by the repulsive force of the spring 19 to cause the engagement of
It is rotated to the closed position as shown in (B).

When the lid member 18 is rotated to the closed position, the film passage 20 of the film cartridge 10 is light-tightly closed, and external light does not enter the film cartridge 10 even if the bottom lid 5a is further opened. . In this way, when the film passage of the film cartridge 10 is shielded at the beginning of the work of taking out the film cartridge 10, the work of taking out the film cartridge in a bright room can be performed without using a light-blocking cloth for the film cartridge as in the conventional case. It becomes possible to do. Therefore, the film cartridge 10 can be made entirely of the same resin molded parts, and the film cartridge can be reused very easily.

In the above embodiment, the bottom cover is provided with the engaging hole and the lower side surface of the film cartridge is provided with the projecting piece. However, as shown in FIG. 5, the engaging hole 38 is provided with the lens-fitted film. On the upper part of the unit's patrone chamber, projecting piece 37
The same effect can be obtained by providing c on the side surface on the upper side of the film cartridge, and this action is such that when the film cartridge 36 is loaded in the lens-fitted film unit 30, the lid member 37 is positioned at the open position and taken out. Sometimes, when the film cartridge 36 is pulled out a little downward, the engagement hole 38 and the projecting piece 37c are disengaged, and the lid member 37 is rotated to shield the light.

[0021]

As described above, according to the film cartridge according to the present invention, when the film cartridge containing the photographed film is taken out from the lens-fitted film unit, the bottom lid is opened at the same time and the film is opened. Since the lid member provided in the passage is turned to the closed position to shield the film from light, all parts can be used without using a different material such as the flocking cloth used in conventional film cartridges. Can be made of a resin molded product, the manufacturing cost of the film cartridge is low, and the parts and materials can be easily reused at low cost.

Further, since the engaging portion formed on the lid member incorporated in the film cartridge of the present invention is provided with the inclined surface for guiding, the smooth engagement can be performed and the engagement can be released. It can be done smoothly.

Further, according to the lens-fitted film unit to which the present invention is applied, a mechanism for taking out the film cartridge and closing the lid member of the film cartridge at the same time does not increase the number of components of the lens-fitted film unit. Since it is possible to use only the compound holes, the manufacturing cost of the lens-fitted film unit can be maintained as it is. Further, even if the film cartridge is taken out in a bright room, the possibility of exposing the photographed film to outside light is eliminated.

[Brief description of drawings]

FIG. 1 is an external view of a main body of a film unit with a lens and a film cartridge according to the present invention.

FIG. 2 is a partially cutaway perspective view of a film cartridge using the present invention.

FIG. 3 is a cross-sectional view of an essential part of the film cartridge shown in FIG.

FIG. 4 is a cross-sectional view of essential parts in a state where a film cartridge is loaded in the unit main body shown in FIG.

FIG. 5 is a cross-sectional view of the essential parts in a state where the unit main body is loaded with the film cartridge according to another embodiment of the present invention.

[Explanation of symbols]

 2,30 Unit main body 4,32 Front cover 5,33 Rear cover 5a, 35 Bottom cover 7,38 Engagement hole 10,36 Film patrone 16 Film 18,37c Lid member 18e Guide slope 19,39 Spring

Claims (3)

[Claims] 1. A film patrone used by loading a film patrone, which has been photographed, in a lens-mounted film unit that is taken out from an axial direction, and rotates between a closed position for blocking the film passage and an open position for opening the film passage. A flexible lid member and a spring for urging the lid member to a closed position are incorporated in the cartridge body, and the lens cartridge film is attached to one end of the lid member when the film cartridge is housed in the lens film unit. A film patrone, characterized in that an engaging portion is provided which engages with a locking portion provided in the unit and holds the lid member in the open position against the spring. 2. A guide slope is formed in the engagement portion, and when the film cartridge is loaded in the lens-fitted film unit from the axial direction, the lid member is directed to the open position by the sliding contact between the locking portion and the guide slope. The film cartridge according to claim 1, wherein the film cartridge is rotated. 3. A lid member that is rotatable between a closed position that shuts off the film passage and an open position that opens the film passage, and a spring that urges the lid member toward the closed position. In a film unit with a lens pre-loaded with a film cartridge, a film cartridge in which the film cartridge is axially loaded, and an upper surface or a lower surface of an inner wall of the cartridge are formed, and an upper surface of the film cartridge loaded in the cartridge chamber. Alternatively, the lens-fitted film unit is characterized by having an engaging portion that engages with one end of the lid member exposed from the lower surface and holds the lid member in the open position against the spring.