JPH0980697A - Film unit with lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To close a light shielding lid when a film cartridge housed in a film unit with lens is taken out. SOLUTION: A slide bottom lid 47 for cartridge chamber has a rack 60 integrally formed thereon, and the rack 60 is geared with a pinion gear 56 engaged with an engaging rotating shaft 19b integrally formed on the end part of a light shielding lid. When a cartridge body 11 having a film 12 housed therein is taken out from a cartridge chamber 48 after the end of photographing, the slide bottom lid 47 is slid toward the rear of the unit body. Thus, the track 60 rotates the pinion gear 56 to rotate the light shielding lid to the close position, and the film passage is interrupted. The slide bottom lid 47 is perfectly pulled out, and the cartridge body 11 is taken out from a takeout port 58.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens-fitted film unit, and more particularly to a lens-fitted film unit using a film cartridge provided with a light-shielding lid for opening and closing a film delivery port.

[0002]

2. Description of the Related Art A film photographing unit such as a photographing lens and a shutter device is incorporated, and a film unit with a lens in which a film cartridge and an unexposed film extracted from the film cartridge are built into the unit body (for example, "Sharun Run Su
per800 "(trade name)) and the like are manufactured and sold by the applicant. This film unit with a lens simplifies the above-mentioned mechanisms and the like so that the user can easily purchase and enjoy photographing, thereby reducing the manufacturing cost.

A number of film cartridges have been proposed in which the film is housed in a plastic cartridge body. In this film cartridge, when not in use, all the film is wound up to the tip to the cartridge body, and when used, the spool around which the film is wound is rotated, and the rotation of this spool is transmitted to the film from the film outlet to the outside of the cartridge body. It is designed to send out the film. Further, in order to shield the film delivery port from light, a light shielding lid which is rotatable between an open position to open the film delivery port and a closed position to shield the film delivery port is used in place of the conventional telemp. By keeping this light-shielding lid in the closed position, it is possible to prevent external light from entering the inside of the cartridge from the film outlet, and prevent fogging of the unused or undeveloped film stored in the cartridge body. There is.

[0004]

By the way, when the film cartridge as described above is loaded in the lens-fitted film unit, the cartridge main body accommodating the film is mounted on the lens-fitted film after all the frames are photographed. Must be removed from the unit. Generally, the cartridge and the film cartridge are taken out in a bright place, so while the cartridge body is housed in the lens-equipped film unit, turn the light-blocking lid to the closed position to shield the film outlet. There is a need.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lens-fitted film unit in which the light-shielding lid can be rotated to the closed position when the cartridge body is taken out.

[0006]

In order to achieve the above object, the present invention provides a rotating member engaged with an end portion of a light shielding lid,
A bottom lid of the cartridge chamber slidably provided on the bottom surface of the cartridge chamber accommodating the cartridge body;
And an engaging portion that is integrally formed with the bottom cover and that rotates the rotation member when the bottom cover is slid and is engaged with the rotation member to rotate the light shielding cover to a closed position. It was done like this. It is preferable that the rotating member is formed of a gear, and the engaging portion is formed of a rack that meshes with the gear.

[0007]

When the bottom lid of the cartridge chamber is slid when the cartridge body is taken out after the photographing is finished, the engaging member rotates the rotating member accordingly. As a result, the light blocking lid is rotated from the open position to the closed position, and the light blocking lid prevents external light from entering the inside of the cartridge body. After this, the cartridge body is taken out.

[0008]

FIG. 2 shows a film cartridge loaded in a lens-fitted film unit embodying the present invention.
Shown in The film cartridge 10 accommodates a long film 12 wound in a roll state inside the cartridge main body 11 in a state of being wound around the spool 13, and rotates the spool 13 in the film feeding direction to move the film 12 to the outside of the cartridge main body 11. Send out. The cartridge body 11 includes cartridge shells 14a and 14b. These cartridge shells 14a and 14b are formed of a light-shielding plastic resin, and are fitted together with the spool 13, the light-shielding lid 15, the spool lock mechanism (not shown) and the like incorporated therein.

At one end of the spool 13, a key groove 13a is formed.
(See FIG. 3) is formed, and the key groove 13a is exposed on the upper surface 11a side of the cartridge body 11. The spool driving shaft of the lens-fitted film unit is engaged with the key groove 13a, and the spool 13 is rotated.

On the outer periphery of the cartridge body 11, a port portion 17 having a film outlet 16 at its tip is formed. As shown in FIG. 3, a film passage 18 that connects the film outlet 16 and the inside of the cartridge body 11 is formed in the port portion 17. A light shielding lid 15 is rotatably provided in the film passage 18 near the film outlet 16. As shown in FIG. 2, the upper surface 11 of the port portion 17 is provided at both ends of the light shielding lid 15.
Engaging rotary shafts 19a and 19b having a C-shaped cross section, which are exposed to the a and the lower surface 11b, respectively, are integrally formed. By rotating the engagement rotary shaft 19a or 19b by, for example, a lens-fitted film unit or an engagement shaft on the camera side or the developing processing unit side, the light-shielding lid 15 opens the film delivery port 16 and opens the film delivery port. It is pivoted between a closed position with the outlet 16 blocked.

For example, when the film cartridge 10 is loaded in a camera, a development processing device or the like, the engagement shaft of the development processing device or the like is engaged with the engagement rotation shaft 19a and rotated by this engagement shaft. The light shielding lid 15 shown in FIG. 3A is rotated to the open position. When the light shielding lid 15 is set to the open position, the spool lock mechanism is unlocked and the spool 13 is rotatable. At this time, when the spool 13 is rotated in the film feeding direction (clockwise in the figure), the film 12 wound around the spool 13 is rotated.
The leading end of the sheet is picked up by the separating claw 20 and is sent out of the cartridge main body 11 from the film outlet 16 through the film passage 18. Further, when the film 12 is stored in the cartridge body 11, the spool 13
By rotating the film in the film rewinding direction (counterclockwise direction), the film 12 is wound around the spool 13,
It is stored in the cartridge body 11.

When the light shielding lid 15 is rotated to the closed position shown in FIG. 3B, the light shielding lid 15 tightly closes the film delivery port 16. Due to the internal light-shielding function of the light-shielding lid 15, outside light from the film outlet 16 enters the inside of the cartridge body 11 when the unexposed or unprocessed film 12 is stored in the cartridge body 11. Prevent from doing. When the light-shielding lid 15 is rotated to the closed position, the spool lock mechanism prevents the spool 13 from rotating, and as shown in FIG. 4, the lock claw 2 formed on the cartridge shell 14a.
1 enters below the cutout portion of the engaging rotary shaft 19a to lock the rotation of the engaging rotary shaft 19a, and even if an external force acts on the light shielding lid 15, the light shielding lid 15 moves from the closed position to the open position. It prevents the rotation of the.

When the light shielding lid 15 is rotated to the closed position, the engagement shaft of the camera, the lens-fitted photo film unit or the like may be engaged with either of the engagement rotation shafts 19a and 19b. Further, when rotating the light shielding lid 15 from the closed position to the open position, the engagement shaft is inserted into the engagement rotation shaft 19a on the upper surface 11a side, and the lock claw 21 is elastically deformed outward by the engagement shaft. Then, the lock claw 21 unlocks the rotation of the light shielding lid 15 by pushing it out.

The film 12 used is of a new format, as shown in FIG. 2, in which one perforation 12a is provided at each end of each photographing frame already proposed by the present applicant. , The standard screen size of one frame on the film is 15.6 mm x 27.
4 mm.

The appearance of the lens-fitted film unit embodying the present invention is shown in FIG. The lens-fitted film unit includes a unit body 30 and an exterior body 3 such as a paper box that covers the unit body 30.
It consists of 1. The lens-fitted film unit includes a taking lens 33, a finder 34, and a window 3 for displaying the number of shots.
5, the release button 36, the winding knob 37, the stroboscopic light emitting portion 38 and the like are exposed to the outside so that the photographing operation can be performed while the unit main body 30 is covered with the exterior body 31.

The unit body 30 is, as shown in FIG.
It is composed of a main body base 41, a front cover 42, a rear cover 43, an exposure unit 44, a strobe device 45, a drive battery 46 for the strobe device 45, a slide bottom cover 47, and the like. A dark box 41a is formed in the central portion of the main body base 41, and an exposure frame 41b for limiting the exposure range of the film 12 to a predetermined size is formed on the back side of the dark box 41a.

The main body base 41 has a cartridge chamber 48 and a film roll chamber 49 on both sides of the dark box 41a.
And are integrally formed. In the cartridge chamber 48,
The cartridge body 11 and the unexposed film 12 pulled out from the cartridge body 11 are housed in the film roll chamber 49 in a roll shape. further,
A spool drive shaft formed at the lower end of the cartridge chamber 48 is engaged with a key groove 13a of the spool 13, and its rotation causes a winding knob 37 for winding the photographed film 12 into the cartridge body 11. Are arranged.

The rear cover 43 is an exposure frame 4 of the main body base 41.
A film support surface 43 formed to be curved to correct the field curvature of the taking lens 33 at a portion facing 1b.
a is formed, and an auxiliary lid 50 for the cartridge chamber and a bottom lid 51 for the film roll chamber are formed on the bottom side of both ends, respectively. The bottom cover 51 for the film roll chamber covers the bottom surface of the film roll chamber 48 in a light-tight manner. The auxiliary lid 50 will be described later.

The front cover 42 has a release button 36,
An opening 42a for exposing the taking lens 33 to the outside,
The window 35 and the like are formed. The exposure unit 44 is assembled with a shot number display plate 52, a shutter device, a one-frame winding device, an optical system 53 of the finder 4, and the like.

The exposure unit 44 and the strobe device 45 are
The main body base 41 is attached to the front surface of the main body base 41.
A front cover 42 is attached to the front surface of the. After the cartridge body 11 is pulled out from the cartridge body 11 with the cartridge chamber 48 and the light-shielding lid 15 in the open position, and the rolled film 12 is housed in the film roll chamber 49, respectively, the rear cover 43 is attached to the main body base portion. It is attached to the back surface of 41, and the auxiliary lid 50 and the bottom lid 51 for the film roll chamber are closed.

FIG. 7 shows a state before the auxiliary lid 50 is closed. Although the front cover 42 is actually attached to the main body base 41, the front cover 42 is omitted for illustration purposes. The cartridge chamber 11 is accommodated in the cartridge chamber 48 such that the lower surface 11b is exposed to the outside through an opening 55 formed by the inner wall of the cartridge chamber 48 and the rear cover 43.

A pinion gear 56 is attached to the engaging rotary shaft 19b exposed on the lower surface 11b of the cartridge body 11. At one end of the pinion gear 56, the engagement shaft 5 fitted and engaged with the engagement rotation shaft 19b having a C-shaped cross section.
7 are integrally formed. The engagement shaft 57 includes a shaft portion 57 a that enters the central portion of the engagement rotation shaft 19 b, and the shaft portion 5.
7a and a convex portion 57b which is formed around the engaging rotary shaft 19b and engages with the cutout portion of the engaging rotary shaft 19b.

The auxiliary lid 50 is provided with a take-out port 58 for taking out the cartridge body 11, and the take-out port 5 is provided on the surface facing the bottom side of the cartridge chamber 48.
A light-shielding wall 59 that surrounds 8 is projected. This shading wall 59
The size of the outer circumference of the opening 55 is the same as the size of the inner circumference of the opening 55. When the auxiliary lid 50 is closed, the light shielding wall 59 enters the opening 55, and the auxiliary lid 50 and the cartridge chamber 48.
External light from between and does not enter the cartridge chamber 48. After inserting the engagement shaft 57 of the pinion gear 56 into the engagement rotation shaft 19b, the auxiliary lid 50 is bent and the engagement claw 50a is clawed into the engagement opening 48a formed at the tip of the bottom portion of the cartridge chamber 48. Engage and close.

As shown in FIG. 8, a protrusion 47a having a substantially U-shaped cross section is integrally formed at the rear end of the slide bottom cover 47, and the cartridge main body 11 housed in the cartridge chamber 48 at the time of mounting is mounted on the cartridge main body 11. A rack 60 that meshes with the pinion gear 56 attached to the engaging rotary shaft 19a is integrally formed near the position facing the engaging rotary shaft 19b.
Further, on both sides of the slide bottom lid 47, a pair of concave portions 47b that are click-joined with the hemispherical convex portions 62b (see FIG. 9) formed on the auxiliary lid 50 side are formed.

As shown in the state in which the auxiliary lid 50 is closed in FIG. 9, a mounting surface 6 to which the slide bottom lid 47 is attached is attached to the lower surface of the auxiliary lid 50 (bottom side of the unit main body 31).
1 is formed. The mounting surface 61 is provided with a protruding wall 62 that surrounds the mounting surface 61 in a U-shape, and the outlet 5
8 is open. Mounting surface 6 surrounded by this projecting wall 62
The size of 1 is the same as the size of the cross section of the slide bottom cover 47. Further, a part of the protruding wall 62 is the engaging claw 6
2a, and a pair of convex portions 62b are formed on the inner surface facing each other. A substantially U-shaped concave portion 63 into which the convex portion 47 a of the slide bottom lid 47 is inserted is formed on the rear surface side of the mounting surface 61.

The slide bottom lid 47 is slidably assembled to the auxiliary lid 50 by pressing the rack 47a toward the cartridge chamber 48 and pressing it against the mounting surface 61 (in the direction of the arrow in the drawing) to obtain the state shown in FIG. . During this assembly,
Each engaging claw 62a abuts on the slide bottom lid 47 and elastically deforms outward to allow the slide bottom lid 47 to be mounted on the mounting surface 61. When the mounting is completed, the engaging claws 62a engage with the engaging surfaces 47d of the slide bottom cover 47 to prevent the slide bottom cover 47 from slipping out downward, and to attach the slide bottom cover 47 to the mounting surface 61. I try to stick to. Further, the pair of convex portions 62b are respectively click-coupled to the concave portions 47b of the slide bottom lid 47, so that the slide bottom lid 47 cannot be easily slid rearward (toward the rear surface of the unit body 31).

FIG. 1 schematically shows the state of the slide bottom cover 47 during mounting and sliding. By mounting the slide bottom cover 47 on the mounting surface 61 as described above, the rack 60 is meshed with the pinion gear 56 as shown in FIG. In the mounted state, the mounting surface 61 around the slide bottom cover 47 and the outlet 58 are in close contact with each other, and the projecting wall 62 covers the periphery of the slide bottom cover 47, so that external light enters the cartridge chamber 48. do not do.

When removing the cartridge body 11,
The slide bottom cover 47 is slid backward (in the direction of arrow A). By this sliding movement, as shown in FIG. 1B, the pinion gear 56 is rotated in the direction of arrow B in the rack 60, and the light shielding lid 15 is rotated from the open position to the closed position.

The length of the rack 60 is such that the meshing with the pinion gear 56 is released when the light-shielding lid 15 is set to the closed position. In addition, until the light blocking lid 15 is set to the closed position by sliding the slide bottom lid 47 rearward, the slide bottom lid 47 and the mounting surface 61 around the take-out port 58 are slid and moved in close contact with each other. , The slide bottom lid 47 has an outlet 58
Since it covers the slide bottom lid 4, this operation prevents external light from entering the cartridge chamber 48.
A size of 7 is set.

A breakage portion 67 is formed at a position on the back side of the take-out port 58 which comes into contact with the rack 60 when the slide bottom cover 47 slides. At both ends of the fractured portion 67, the wall thickness is made thinner than the other portions.
As shown in (c), it is easily separated by the rack 60 that slides, and the rack 60 is allowed to slide rearward.

Next, the operation of the lens-fitted film unit constructed as described above will be described. At the time of shooting, rotate the winding knob 37 to release the release button 3
Press 6 to shoot. When the winding knob 37 is rotated, the rotation of the winding knob 37 causes the spool 1 to rotate.
3 is rotated in the film rewinding direction, the film 12 is wound around the spool 13, and film feeding for one frame is performed. At the same time, shutter charging is performed by the shutter charging mechanism that engages with the perforations 12a and rotates. After the photographing, when the winding knob 37 is rotated again, the film 12 is fed by one frame, and the photographed film 12 is stored in the cartridge 11. In this way, shooting is sequentially performed.

When the final frame of the film 12 is photographed, the winding knob 37 can be continuously rotated. The photographer continuously rotates the winding knob 37 to wind up the entire film 12 into the cartridge body 11. Then, in this state, the lens-fitted film unit is brought to a photo lab or photo shop to request a development process.

At the developing room or the like, first, the exterior body 31 of the lens-fitted film unit is removed from the unit body 30, or a part of the exterior body 31 is cut off to expose the slide bottom lid 47. Next, the slide bottom cover 47 is slid toward the rear. When a sliding force is applied to the slide bottom lid 47, the convex portion 62b of the protruding wall 62 is pressed by the concave portion 47b of the slide bottom lid 47, and a part of the protruding wall 62 having the convex portion 62b is elastically deformed outward. Then, the pair of recesses 4
The click connection between 7b and the convex portion 62b is released. This allows the slide bottom cover 47 to slide.

While the engaging surface 47d is slid with the engaging claws 62a, the slide bottom cover 47 is in close contact with the mounting surface 61.
It is slid while moving. The rack 60 is slid along with the slide movement of the slide bottom cover 47,
As a result, the pinion gear 56 meshed with the rack 60 is rotated in the direction of arrow B in FIG. The rotation of the pinion gear 56 rotates the engagement rotary shaft 19b engaged with the engagement shaft 57, and rotates the light shielding lid 15 from the open position toward the closed position.

When the slide bottom cover 47 is slid further, the light shielding cover 15 is rotated to the closed position. At this time, the lock claw 21 enters the cutout portion of the engagement rotary shaft 19a on the upper surface 11a side of the cartridge body 11, and the light shielding lid 15 does not rotate from the closed position to the open position. When the light shielding lid 15 is rotated to the closed position, the engagement between the rack 60 and the pinion gear 56 is disengaged, as shown in FIG. Therefore, even if the light shielding lid 15 rotates to the closed position and the pinion gear 56 does not rotate, the sliding movement of the rack 60 is allowed. Further, the slide bottom cover 47 is attached to the mounting surface 61 until the light shielding cover 15 is rotated to the closed position.
Are slid in close contact with each other, and no gap is created between the slide bottom cover 47 and the take-out port 58, so that external light enters the cartridge chamber 48 and the film outlet 16
The film 12 is not exposed to external light through the.

Further, when the slide bottom cover 47 is slid, the rack 60 abuts on the rear side breaking portion 67 and slides to the rear side of the take-out port 58 while separating the breaking portion 67. Continue to slide the slide bottom cover 47 toward the back to slide the slide bottom cover 47
Is removed from the attachment surface 61 of the auxiliary lid 50.

As a result, as shown in FIG. 1C, the lower surface 11b of the cartridge body 11 is completely exposed from the take-out port 58. After that, the cartridge body 11 on which the photographed film 12 has been exposed is pulled out with the ejection port 58 facing downward, and the cartridge body 11 is ejected from the ejection port 58.
To the outside of. At this time, even if the cartridge main body 11 is pulled out by applying vibration or the like to the unit main body 31, the engagement rotary shaft 19a is locked by the lock claw 21, so that the light shielding lid 15 is directed from the closed position to the open position. It does not rotate.

After removing the pinion gear 56 from the removed cartridge body 11, the cartridge body 11 is sent to the developing process. In the development processing step, as described above, the engagement shaft of the development processor is inserted into the engagement rotation shaft 19a, the lock of the light shielding lid 15 is unlocked by the lock claw 21, and then the engagement rotation shaft 19a is rotated. To rotate the light shielding lid 15 to the open position. After this, the spool 13 is rotated by the spool drive shaft in the film feeding direction. As a result, the film 12 is delivered from the film delivery port 16 to the outside of the cartridge body 11. The developed film 12 is developed.

[0039]

As described above, according to the lens-fitted film unit of the present invention, a gear or the like is attached to the end of the light-shielding lid which is rotated between the closed position and the open position, which is exposed to the outside of the cartridge body. The rotating member is engaged, and an engaging member such as a rack that engages with the rotating member is integrally formed on the bottom cover, and when the bottom cover is slid, the rotating member is rotated by the engaging member to block light. Since the lid is rotated to the closed position, the light-blocking lid can be rotated to the closed position while the cartridge body is housed in the lens-fitted film unit, and the cartridge body containing the film can be taken out even in a bright place. You can

[Brief description of drawings]

FIG. 1 is an explanatory view showing a state of a lens-fitted film unit embodying the present invention when a slide bottom cover is attached and when a slide is moved.

FIG. 2 is an external perspective view of a film cartridge having a light shielding lid.

FIG. 3 is a partial cross-sectional view of the cartridge body showing the rotation of the light shielding lid.

FIG. 4 is a partial cross-sectional view of the cartridge body showing the lock claw of the light shielding lid.

FIG. 5 is an external perspective view of a film unit with a lens embodying the present invention.

FIG. 6 is an exploded perspective view of the lens-fitted film unit.

FIG. 7 is a perspective view showing a state where the cartridge main body is housed in the cartridge chamber.

FIG. 8 is a perspective view showing a slide bottom lid on which a rack is formed.

FIG. 9 is a perspective view showing a mounting surface side of an auxiliary lid.

FIG. 10 is a perspective view showing a state where an auxiliary lid is attached to a slide bottom lid.

[Explanation of symbols]

 10 film cartridge 11 cartridge body 12 film 15 light-shielding lid 16 film outlet 19a, 19b engaging rotary shaft 30 unit body 47 slide bottom lid 48 cartridge chamber 56 pinion gear 58 take-out port 60 rack

Claims (2)

[Claims] 1. A film is housed in a cartridge body, and is rotatable between a closed position where the film delivery port is light-tightly shielded and an open position where the film delivery port is opened, and an end portion is exposed to the outside of the cartridge body. In a lens-fitted film unit using a film cartridge provided with a light-shielding lid, a rotating member engaged with the end portion and a cartridge chamber slidably provided on the bottom surface of the cartridge chamber accommodating the cartridge body. Engagement that is integrally formed with the bottom lid and that engages with the rotating member and rotates the rotating member to rotate the light shielding lid to the closed position when the bottom lid is slid. A film unit with a lens, which is provided with a section. 2. The lens-fitted film unit according to claim 1, wherein the rotating member is formed of a gear, and the engaging portion is formed of a rack that meshes with the gear.