JPH08234369A - Film unit with lens - Google Patents

Abstract

PURPOSE: To close a lid member and open a bottom lid by one operation so that a photographic film cartridge can be taken out. CONSTITUTION: A rotating member 39 is engaged with the end part of a lid member 26, and a bottom lid 31 is locked in the closing position by a lock member 38 held by a stopper 40. When a jig 57 is inserted from an opening 30 for a winding nob 5, the jig 57 presses the rotating member 39 to rotate it to the closing position. When the jig 57 is further pushed, the stopper 40 is pressed to release the holding of the lock member 38. Since the lock member 38 is thus rotated counterclockwise by the force of a spring 41, the lock of the bottom lid 31 is released, and the bottom lid 31 is automatically opened by the force of a leaf spring 34.

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 for loading a photographic film cartridge having a lid member for opening and closing a film passage.

[0002]

2. Description of the Related Art A film unit with a lens, which incorporates a simple photographing mechanism such as a photographing lens and a shutter mechanism, and a film cartridge and an unexposed photo film drawn from the film cartridge, for example, "Sharun Run 800"
(Trade name) and the like are manufactured and sold by the applicant. This lens-fitted film unit is manufactured at low cost by using each of the above-mentioned mechanisms and each part of the unit main body as resin parts so that users can easily purchase and enjoy photography.
In addition, a large number of such film units with a lens are proposed in which a photographic film cartridge using a plastic cartridge is loaded.

In the above plastic patrone, instead of the conventional teremp to shield the film delivery port, it is rotatable between an open position for opening the film delivery port and a closed position for blocking the film delivery port. Some plastic lid members are used. Such a lid member must be securely closed when the cartridge is taken out of the lens-fitted film unit. Therefore, in the invention described in Japanese Patent Laid-Open No. 6-130558, etc., an engaging piece that engages with the end of the lid member is rotatably provided on the bottom lid that is opened when the cartridge is taken out. The engaging piece is rotated to open the lid member to the closed position before opening. As a result, the lid member is always in the closed position when the cartridge is taken out.

[0004]

In the film unit with a lens after use, the cartridge is taken out from the cartridge chamber at a developing room and the like, and development and printing processing are performed on the photographic film. Since it is often the case that an attached film unit is used, the work of first closing the lid member of the patrone and then prying open the bottom lid and taking out the patrone is very troublesome, and there is a problem that work efficiency is deteriorated. is there.

The present invention has been made in view of the above problems, and provides a lens-fitted film unit in which the lid member of a cartridge is closed and the bottom lid is opened to take out the cartridge with a little work. To aim.

[0006]

In order to solve the above-mentioned problems, the lens-fitted film unit according to claim 1 comprises:
A lid member rotating means that is rotatably assembled to the upper portion of the cartridge chamber and engages with an end portion of the lid member, a lock position that engages with the bottom lid and locks in a closed position, and a bottom lid that is not opened. A lock member that is movable between the lock position, a first spring that urges the lock member toward the unlocked position, and a first spring that is attached to the upper portion of the cartridge chamber and that resists the urging force of the first spring. And a stopper for holding the lock member at the lock position, and when removing the cartridge from the cartridge chamber, the lid member rotating means is rotated toward the closed position and the holding of the lock member by the stopper is released. The jig was inserted into the upper part of the cartridge chamber.

The lens-fitted film unit according to a second aspect of the present invention is such that a jig, which is a thin plate-shaped rod, is attached to the upper portion of the cartridge chamber so that a part of the winding knob is rotatably exposed to the outside. So that the lock member is moved from the position where the lock member is held by pressing the stopper formed by pushing the projection formed on the lid member rotating means toward the closed position. It was done.

Further, in the lens-fitted film unit according to the third aspect of the present invention, the bottom lid is urged toward the open position by the second spring, and the patrone chamber is automatically opened when the lock by the lock member is released. It is something that is done.

[0009]

[Function] The opening provided on the back side of the lens-fitted film unit for exposing a part of the winding knob to the outside after the photographing on all the photo films and the winding of the photo film on the cartridge are completed. Insert a jig consisting of a thin plate from. The jig pushes the protrusion formed on the lid member rotating means at its tip to rotate it toward the closed position. As a result, the lid member of the cartridge is closed so that the photographic film will not be exposed to light even if it is taken out of the cartridge chamber. When the jig is further inserted, the tip portion pushes the stopper to move it from the position where the lock member is held. As a result, the lock member moves to the unlocked position by the urging of the first spring, so that the bottom lid is unlocked by the lock member. Then, the bottom lid automatically opens the cartridge chamber by the second spring bias.

[0010]

FIG. 2 shows the external appearance of a lens-fitted film unit according to the present invention. The lens-fitted film unit 2 is composed of a unit main body 3 having a built-in photographing mechanism and the like, and a paper box 4 accommodating the same. Paper box 4
The outline is such that the winding knob 5, the shutter button 6 and the like incorporated in the unit main body 3 are exposed, and the taking lens 7, the finder 8 and the number-of-images displaying window 9 are provided.
Holes and the like are provided to expose the above.

In FIG. 1 showing the structure of the unit main body 3, the unit main body 3 includes a main body 11 and a main body 11.
A photo film cartridge 14 including a cartridge 12 and a photo film 13 loaded in the main body 11, an exposure unit 15 mounted on the front surface of the main body 11, a rear cover 16 and a front cover assembled on the back and front sides of the main body 11. It is composed of 17 and.

The main body 11 is made of opaque plastic, and a light shielding cylinder 20 is integrally provided on the optical axis 19. An exposure opening 20a is provided on the front surface of the light shielding tube 20.
Is formed, and an aperture that determines the exposure range of the photographic film 13 is formed on the back side. On both sides of the light-shielding cylinder 20, a cartridge chamber 21 for storing the cartridge 12 and a film roll chamber 22 for storing the photographic film 13 in a roll form are formed. The side wall front surface 21a of the cartridge chamber 21 is a flat surface, and the main body 1
When the front cover 17 is attached to the front side of 1,
A slight gap is formed between the inner wall surface of the front cover 17.

The cartridge 12 includes a first case 24 and a second case 24, which are made of plastic and form the outer shell of the cartridge 12.
The case 25 and the first and second cases 24, 25 are assembled in the back of the film delivery port formed at the joint,
A lid member 26 that is rotatable between a closed position that blocks the film delivery port and an open position that opens the film delivery port, and the cartridge 1
Spool 27 around which photo film 13 is wound in 2
It consists of and.

The spool 27 is provided with a cup-shaped flange (not shown), and since the outer periphery of the photographic film 13 wound in the cartridge 12 is regulated by this flange, looseness in the cartridge 12 does not occur. Does not occur. Accordingly, when the spool 27 is rotated, the rotation can be transmitted to the photographic film 13 without waste, and the photographic film 13 can be sent out by the rotation of the spool 27.

The lid member 26 has a first case 24,
A columnar shaft end portion that is rotatably sandwiched by the second case 25 is formed, and the central portion is arranged in parallel and perpendicular to the film delivery port to open and close the film delivery port. Has been done. A notch-shaped engaging portion 26a is provided on the end surface of the lid member 26.

The rear cover 16 is made of an opaque plastic, and a film supporting surface 29 is formed on a portion of the main body 11 facing the aperture. Also,
An opening 30 for exposing a part of the inner wall 16a covering the rear side of the cartridge chamber 21 to the outside of the unit body 3 is provided so that the winding knob 5 can be rotated. On the bottom side of the rear cover 16, the cartridge chamber 2
Pull-top bottom covers 31 and 32 are provided to cover the bottom surfaces of the film 1 and the film roll chamber 22, respectively.

The bottom cover 31 is a photo film 13 that has been taken.
It is opened when the cartridge 12 in which is taken out is taken out from the unit main body 3. Two claw members 33 for engaging with the main body 11 are provided on the edge of the bottom lid 31 so as not to be opened accidentally, and a plate serving as a second spring is provided on the inner surface. The spring 34 is attached. This leaf spring 34
Is compressed by the cartridge 12 when the bottom lid 31 is closed, so that the bottom lid 31 is urged toward the open position. Since the leaf spring 34 is attached to the side surface of the second case 25 of the cartridge 12, the leaf spring 34 does not interfere with the rotation of the spool 27.

The front cover 17 is made of opaque plastic, and has a shutter button 6, a window 9 for displaying the number of shots.
Etc. are formed. The front cover 17 includes the main body 11
Also, the rear cover 16 is assembled by claw engagement.

The exposure unit 15 has a base portion 36 formed of opaque plastic, and a film winding mechanism, a film counter mechanism, a shutter mechanism, etc., incorporated therein. Further, the taking lens 7 is incorporated in the front surface side of the base portion 36, and the viewfinder 8 is provided above the base portion 36.
Is built in.

A lock member 38 for locking the bottom lid 31 to the closed position and a lid member rotation member for rotating the lid member 26 from the open position to the closed position are provided on the side wall front surface 21a and the upper surface 21b of the cartridge chamber 21 of the main body portion 11. Rotating member 39 as moving means
And the lock member 38 at the lock position for locking the bottom lid 31.
The stopper 40 for holding the
A first spring 41 that urges 1 toward an unlocked position where it is not locked is assembled.

As shown in FIG. 3, the lock member 38 is formed by forming a thin metal plate into an inverted T shape, and has a vertical piece 38a.
Is provided with a hole 44 into which a pin 43 protruding from the side wall front surface 21a of the cartridge chamber 21 is inserted, and is rotatable with respect to the side wall front surface 21a. Further, the vertical piece 38a is provided with a pin 45 to which one end 41a of the spring 41 is hooked, and the other end 41b of the spring 41 is provided on the side wall front surface 2
It is hooked on a pin 47 protruding from 1a. This allows
The lock member 38 is biased counterclockwise in the figure by the spring 41. Further, the lateral piece 38b is provided with two claws 46 that engage with the claw members 33 of the bottom lid 31 of the rear cover 16. The inner surface of the front cover 17 is arranged on the front side of the cartridge chamber 21 so that the pin 43
Although the lock member 38 is prevented from coming off from the lock member 38, the tip of the pin 43 may be crushed to prevent the lock member 38 from coming off.

The stopper 40 is rotatably attached to a pin 49 formed on the upper surface 21b of the cartridge chamber 21 through a hole 40c provided in the central portion. Further, the stopper 40 has one end portion 40a for contacting the vertical piece 38a of the lock member 38 and for holding the lock member 38 in the lock position where the claw 46 engages with the claw member 33 of the bottom lid 31,
The other end 40b is provided to prevent the stopper 40 from rotating due to the urging force of the spring 41 by coming into contact with the pin 50 protruding from the upper surface 21a.

In this way, the stopper 40 serves as the lock member 3.
When 8 is held in the lock position, as shown in FIG. 4, the claw 46 and the claw member 33 are engaged with each other, and the bottom lid 31 is locked in the closed position. Further, when the bottom lid 31 is opened, as shown in FIG. 5, the thin plate jig 57 is inserted from the opening 30 of the rear cover 16 and the other end 40b of the stopper 40 is pushed by the tip 57a. Then, as shown in FIG. 7, the stopper 40 is rotated clockwise in the figure, and the lock member 33 is rotated counterclockwise by the biasing force of the spring 41, so that the claw 46 and the claw member 33 are engaged with each other. Is released, and the bottom lid 31 is automatically opened by the urging of the leaf spring 34.

The rotating member 39 is rotatably inserted into a hole 52 penetrating the upper surface 21a. The rotating member 39 is an engaging portion 26 a formed on the end surface of the lid member 26 of the cartridge 12.
The engaging piece 53 that is engaged with the engaging piece 53, and a thin disk 54 integrally formed on the upper part of the engaging piece 53. On the side surface of the disc 54, when the lid member 26 in the open position is engaged, the projection 5 is formed in a direction parallel to the film feeding direction.
5 is formed. When the projection 55 is pressed by the tip portion 57a of the jig 57 inserted from the opening 30, the rotating member 39 is rotated counterclockwise in the figure as shown in FIG.
The lid member 26 is rotated to the closed position. 4 to 6
However, the winding knob 5 and the front cover 17 are omitted to avoid complicating the drawing.

Next, the operation of the above embodiment will be described.
A user who purchases the lens-fitted film unit 2 shown in FIG. 2 first rotates the winding knob 5 to prepare for photographing such as shutter charging. Then finder 8
Confirm the photographing range with and press the shutter button 6 to photograph one frame. After the photographing, the winding knob 5 is rotated to wind the photographed film 13 for one frame into the cartridge 12. The photographing is repeated as described above, and after all the photographing on the photo film 13 stored in the film roll chamber 22 is completed, the winding knob 5
Rotate the film until the load is removed, and
All are rolled up in the Patrone 12.

Film unit 2 with used lens
Are collected at a developing place through a developing dealer, etc., the cartridge 12 is taken out, and the development and print processing of the photographic film 13 are carried out. As shown in FIG. 4, the lid member 26 of the cartridge 12 is in the open position in the unit main body 3 before taking out the cartridge 12 so that the projection 55 of the rotating member 39 is parallel to the film feeding direction. Since the lock member 38 is disposed in the locked position by the stopper 40 against the bias of the spring 41, the claw 46 engages the claw member 33 of the bottom lid 31 to lock the bottom lid 31. Locked in the closed position.

As shown in FIG. 5, a jig 57 is inserted into the unit body 3 from which the paper box 4 has been removed through the opening 30 for the winding knob 5 of the rear cover 16. Then, the tip portion 57a of the jig 57 presses the protrusion 55 of the rotating member 39 to rotate the rotating member 39 counterclockwise in the drawing. As a result, the lid member 26 engaged with the engagement piece 53 of the rotating member 39 is also rotated counterclockwise, that is, to the closed position, so that a photograph of the inside of the cartridge 12 even if the bottom lid 31 is subsequently opened. The film 13 is never exposed.

When the jig 57 is further pushed into the unit body 3, the tip 57a of the jig 57 presses the other end 40b of the stopper 40, as shown in FIG. By this pressing, the other end 40b of the stopper 40 rides over the pin 50, and the stopper 40 is rotated about the pin 49 in the clockwise direction in the drawing. As a result, the holding of the lock member 38 at the lock position by the one end portion 40a is released, so that the lock member 38 is locked by the spring 4
It is rotated counterclockwise in FIG. Then
The engagement between the claw 46 and the claw member 33 is released, and the bottom lid 31 is automatically opened by the urging of the leaf spring 34, so that the cartridge 12 can be taken out from the inside of the cartridge chamber 21.

In the above embodiment, the turning member and the stopper are turned by inserting the jig, but the turning member turned to the closed position by the jig turns the stopper. You may According to this, the insertion amount of the jig is reduced, so that the cartridge can be taken out more easily. Further, although the lock member is a thin metal plate, it may be formed of plastic. Further, although the jig is inserted through the opening for the winding knob, an opening for inserting the jig may be separately provided in the rear cover or the front cover.

[0030]

As described above, in the lens-fitted photo film unit of the present invention, the lid member can be closed and the bottom lid can be opened only by inserting the jig, so that the cartridge can be taken out efficiently. You can Also,
Since the jig is inserted from the opening for the winding knob, it is not necessary to newly provide an opening for the jig, and the lid member rotating means and the stopper are operated simply by being pressed by the jig. Since it has a structure, it can be implemented at low cost. Further, since the bottom lid is automatically opened when the lock is released, the cartridge can be taken out more efficiently.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a configuration of a unit main body.

FIG. 2 is a perspective view showing an appearance of a lens-fitted film unit of the present invention.

FIG. 3 is an exploded perspective view showing a configuration near a cartridge chamber.

FIG. 4 is an explanatory view showing the inside of the unit main body before the work of taking out the cartridge.

FIG. 5 is an explanatory view showing the inside of the unit main body with the lid member closed.

FIG. 6 is an explanatory diagram showing the inside of the unit main body with the bottom lid open.

[Explanation of symbols]

 2 Film unit with lens 3 Unit body 12 Patrone 21 Patrone chamber 26 Lid member 30 Opening 31 Bottom lid 33 Claw member 34 Leaf spring 38 Lock member 39 Rotating member 40 Stopper 41 Spring 57 Jig

Claims (3)

[Claims] 1. A patrone chamber for accommodating a patrone in which a lid member rotatable between a closed position for shutting off a film outlet and an open position for opening the film is stored, and the patrone is axially moved from the patrone chamber after photographing is completed. A lens-fitted photo film unit having a bottom lid opened for taking out, a lid member rotating means that is rotatably assembled to an upper portion of the cartridge chamber and engages an end portion of the lid member, and a bottom lid. A lock member that is movable between a locked position where it is engaged and locked in the closed position and an unlocked position where the bottom lid is opened, and a first spring that biases this locking member toward the unlocked position. And a stopper that is assembled to the upper portion of the cartridge chamber and holds the lock member in the lock position against the bias of the first spring. When removing the cartridge from the cartridge chamber, Film unit, characterized in that inserting a jig for releasing the retention of the locking member by rotating with the stopper toward the closed position the lid member rotating means at the top of the cartridge chamber. 2. The jig is a thin plate-shaped rod, and is inserted from an opening provided on the back side to expose a part of a winding knob rotatably assembled to the upper portion of the cartridge chamber, 2. The projection formed on the lid member rotating means at the tip end is pressed to rotate toward the closed position, and the stopper is pressed to move from the position holding the lock member. Film unit with lens. 3. The bottom lid is urged by a second spring toward the open position, and automatically opens the cartridge chamber when the lock by the lock member is released. Item 1. A film unit with a lens according to item 1.