JPH0980618A - Cartridge charging device for camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To charge a film cartridge easily into a cartridge chamber by lowering a supporting position by an ejector in a camera using the film cartridge, and easily take out the film cartridge by locking it by a double exposure preventing locking member at the time of taking out the film cartridge finished with exposure. SOLUTION: The locked position of a film cartridge 1 locked by a double exposure preventive locking member 25 is set to a position more on the opening part side than a moving position by an ejector 21, and the energizing force of an ejector spring 22 is set to such strength that the ejector 21 makes the film cartridge 1, finished with exposure, jump to a higher position on the opening part side than the locking position of the locking member 25 within a range of not jumping out of an opening part to lock the film cartridge 1 by the locking member 25 at the time of opening operation of a cartridge cover 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera which uses a film cartridge containing a photographic film wound on a spool and having a light-shielding lid for opening and closing a film delivery opening through which the photographic film passes. The present invention relates to a cartridge loading device that makes it easy to remove a cartridge.

[0002]

2. Description of the Related Art In recent years, a film cartridge having a film delivery port and a light-shielding lid for opening and closing the film delivery port has been proposed. This film cartridge is
When the light-shielding lid is closed, the photographic film is wound around the spool up to the tip portion and stored in the film cartridge to keep the light-shielding state. ing.

On the other hand, various cameras using such a film cartridge have been proposed. This type of camera includes a cartridge chamber for accommodating a film cartridge and a cartridge lid for opening and closing the opening of the cartridge chamber, and further engages with a spool of the film cartridge accommodated in the cartridge chamber to feed the photographic film. It has a spool driver for feeding / winding drive, and a light-shielding lid driver that engages with the light-shielding lid to open and close it.

Further, in the above-mentioned camera, when the photographic film is sent out from the film cartridge and the photographing is sequentially performed and the exposure is completed, the sent photographic film is rewound into the film cartridge, and then the cartridge lid is opened to open the film cartridge. At this time, the film cartridge housed by the ejector is lifted by a predetermined amount, and the state display of the film cartridge is switched to the "exposed" state, and the "exposed" state display is displayed. Double exposure is prevented by installing a mechanism that prevents the film cartridge from being loaded into the cartridge chamber again.

[0005]

However, in the camera using the film cartridge as described above, when taking out the exposed film cartridge from the cartridge chamber, the portion of the film cartridge protruding from the opening of the cartridge chamber is There is a problem that it is difficult to take out because of few.

Specifically, the ejector is installed to disengage the spool and the light shielding lid of the film cartridge from the respective drivers, and the amount of movement by the ejector is small. In other words, when loading the film cartridge, the film cartridge is inserted into the cartridge chamber and the cartridge lid is closed to load the film cartridge. At that time, the film cartridge is in a state of being lifted by a predetermined amount by the ejector. Since the operation of manually closing the film cartridge while closing the lid is complicated, it is preferable to reduce the amount of protrusion so that the cartridge lid can be closed without pushing. However, this makes it difficult to remove the exposed film cartridge because the exposed film cartridge has a small amount of protrusion as described above. On the contrary, if the amount of protrusion by the ejector is increased, the exposed film cartridge is easy to remove, but it is difficult to close the cartridge lid at the time of loading. There are conflicting and conflicting requirements.

The present invention has been made in view of the above circumstances, and a cartridge of a camera which can close the cartridge lid without pushing the film cartridge at the time of loading and easily take out the film cartridge after exposure. It is intended to provide a loading device.

[0008]

SUMMARY OF THE INVENTION A cartridge loading device for a camera according to the present invention, which has solved the above problems, includes an ejector for urging a film cartridge inserted in a cartridge chamber toward an opening by an eject spring, and an exposed state. A locking member that locks a part of the film cartridge set in the above to prevent the film cartridge from being loaded into the cartridge chamber, and the moving amount of the film cartridge by the ejector is the spool of the film cartridge and the light shielding lid. It is the amount necessary to release the engagement with each driver, and the locking position of the film cartridge by the locking member is a position closer to the opening than the moving position by the ejector. When the cartridge lid is opened, the urging force is The exposed film cartridge by Tobiagara within a range not protrude from the opening to a higher position of the opening side of the locking position of the locking member by Kuta,
The strength is such that it is locked to the locking member.

In the above apparatus, when the film cartridge is loaded in the camera, the status indicator of the film cartridge is not exposed, so that the ejector is inserted inside without being locked by the locking member. It is possible to close the cartridge lid without stopping pushing the film cartridge from this position, and by closing the cartridge lid, the film cartridge is further pushed in and the spool and the light shielding lid are Engage the driver.

Then, the photographic film is sent out from the film cartridge, the exposure is sequentially performed, the photographing is completed, the sent photographic film is rewound, and the cartridge lid is opened to take out the exposed film cartridge. The film cartridge status display is switched to the exposed state in conjunction with the opening operation of the film, the light-shielding lid is closed, and the ejector released by the opening operation of the cartridge lid is released by the eject spring. The cartridge is disengaged from the spool and the light-shielding lid and each driver, and at the same time, the cartridge is jumped up to a position higher than the locking position by the locking member. Locked to prevent insertion and locked Since it is higher than the contact position with the ejector, the amount of protrusion from the opening is large and it is easy to take out. Furthermore, since it is locked by the locking member, the cartridge lid cannot be closed and double the Exposure is prevented.

[0011]

According to the cartridge loading apparatus for a camera of the present invention, when the cartridge lid is opened to take out the exposed film cartridge, the film cartridge is locked by the ejecting spring by the urging force of the eject spring. By jumping up to a position higher than the locking position on the opening side, the exposed film cartridge is locked by this locking member and stopped, increasing the amount of protrusion from the opening and making it easy to take out. In addition, since the ejector abutment position is low at the time of loading, the cartridge lid can be closed as it is, and both loading and unloading of the film cartridge can be easily performed.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a bottom perspective view showing a loaded state of a film cartridge in a camera equipped with an example cartridge loading device, FIG. 2 is a perspective view of a storage portion of the film cartridge, and FIG. 3 is a cross section of the cartridge storage portion showing an ejecting action. FIG. 4 and FIG. 4 are schematic cross-sectional views showing the locking members in different states on the left and right.

The camera 10 has a cartridge chamber 12 for accommodating the film cartridge 1 at one end of the bottom of the camera body 11.
The opening of the cartridge chamber 12 is opened and closed by the cartridge lid 13. One end of the cartridge lid 13 is rotatably supported on the side end of the bottom surface of the camera body 11.

As shown in FIG. 2, the film cartridge 1 is provided with a photographic film (not shown) on a spool 3 provided inside a cartridge main body 2 which is formed by joining divided cases of resin molded products. The tip part is also wound and stored in a roll shape. A slit-shaped film outlet 4 is formed on the side surface of the cartridge body 2, and a light-shielding lid 5 for opening and closing the film outlet 4 is rotatably supported inside the film outlet 4. This light-shielding lid 5 is rotatably provided in parallel with the spool 3, and has a shaft end 5a exposed at an end face (bottom surface in FIG. 2) inserted in the back of the cartridge chamber 12 and a notch 5b for driving the opening and closing thereof. Is provided, and the shaft end 5a is engaged with a light-shielding lid driver 32 (see FIG. 3) installed in the inner part of the cartridge chamber 12 to be rotated to open and close. On the other hand, a notch 3b (key groove) is provided in the shaft end 3a exposed on the end face of the spool 3 which is inserted into the back of the cartridge chamber 12, and the spool installed in the back of the cartridge chamber 12 is provided in the notch 3b. driver
30 (see FIG. 3) is engaged to feed and rewind the photographic film.

On the other end surface of the film cartridge 1 (the upper surface in FIG. 1), an unexposed display window 6a having a "○" shape that means unexposed and an exposed display window 6b having an "x" shape that means exposed. Is formed, and an indicator (not shown) that rotates in conjunction with the spool 3 is provided inside thereof. With the rotation of the indicator, at the predetermined rotation position, the unexposed display window 6a displays and displays the display portion of a color different from that of the cartridge main body 2, while at other rotation positions, the exposed display window 6b displays the display portion. Is displayed by positioning.

Further, on the upper surface side of the camera (see FIG. 2), inside the display portion 2a where the cartridge main body 2 is partially removed,
A rotary plate 7 is provided for displaying various information about the film cartridge 1. This rotary plate 7 also rotates integrally with the spool 3, and normally the bar code portion faces the display portion 2a to display various information, and when the spool 3 is rotated to the exposed state display, The cutout portion 7a (see FIG. 4A) of the rotary plate 7 is provided so as to be located on the display portion 2a. A locking member 25, which will be described later, is locked in the notch 7a.

The rotational positions of the rotary plate 7 and the indicator are set with the notch 7a and the display based on the position of the notch 3b formed in the shaft end 3a of the spool 3, and the rotational position of the camera When the film cartridge 1 after exposure is taken out from 10, the spool 3 is rotated to a predetermined position by the releasing operation of the key member 20 in the opening direction or the control of the drive motor to switch to the exposed state display.

A key member 20 for opening and closing the cartridge lid 13 is installed on the lower surface of the camera body 11. The key member 20 is for locking the cartridge lid 13 in the closed state, and the tip key portion 20a is the cartridge lid.
It is locked to the locking portion 13a of 13. The locking portion 13a is provided in a groove shape on the edge wall of the cartridge lid 13.

An intermediate portion of the key member 20 is supported by the camera body 11 and is rotatable, and a projection-like operation portion 20 is provided at one end thereof.
b is connected, and the key portion 20a is connected on the opposite side. In addition, an arc-shaped guide groove 14 is formed on the bottom surface of the camera body 11 at a position facing the operation section 20b so that the operation section 20b can move.

In the cartridge chamber 12, an ejector 21 for lifting the cartridge 1 inserted when the cartridge lid 13 is opened by a predetermined amount is installed. The ejector 21 is disposed at a position lateral to the cartridge insertion space of the cartridge chamber 12 and extends in the axial direction (vertical direction of the camera 10), and the film cartridge 1 is provided at one end on the back side.
Has a locking piece 21a that is bent so as to be able to contact the end surface of the cartridge, and the other end 21b is provided so as to face the opening of the cartridge chamber 12, and the other end 21b is provided so as to project on the cartridge lid 13. The pressing piece 13b can be contacted. Further, an eject spring 22 is connected to the ejector 21 and is urged in the projecting direction, and the raised position is stopped by the other end 21b of the ejector 21 coming into contact with the stopper 11a of the camera body 11.

The amount of movement h of the ejector 21 (see FIG. 3)
, The raised position is a position where the spool driver 30 and the light-shielding lid driver 32 are disengaged from each other, and this position is a contact position when the film cartridge 1 is inserted. It is set low.
By closing the cartridge lid 13 from this raised position, the film cartridge 1 can be pushed into the loading position shown by the chain line without pushing it by hand. Further, in the loading position, the ejector 21 is the pressing piece of the cartridge lid 13.
It is pushed against the eject spring 22 by 13b, and the locking piece 21a at the front end is located below the bottom surface of the film cartridge 1 and below.

When the cartridge lid 13 is opened,
The ejector 21 lifts the film cartridge 1 by the urging force of the eject spring 22 to release the engagement with the spool driver 30 and the light-shielding lid driver 32, and further at a higher position on the opening side, a locking member 25 described later. The urging force of the eject spring 22 is set so as to make the film cartridge 1 jump up to a position higher than the tip end portion 25a of the film cartridge 1 within a range where the film cartridge 1 does not jump out.

At one side of the cartridge chamber 12, one locking member 25 is swingably supported as shown on one side of FIG. The locking member 25 is provided in a hook shape, the upper end portion is rotatably supported by a pin 26, is bent from the lower end portion, and a front end portion 25a is formed upward, and the front end portion 25a is formed. Can be locked to the film cartridge 1 to be inserted into. Further, the locking member 25,
The tip end 25a is biased by the torsion spring 27 in a direction to project into the cartridge chamber 12.

The locking member 25 (A) on the left side of FIG. 4 shows a state where the exposed film cartridge 1 is locked to prevent the film cartridge 1 from being loaded. As described above, the exposed film cartridge 1 is provided with the cutout portion 7a of the rotary plate 7 on the display portion 2a on the bottom surface, and the tip portion 25a of the locking member 25 is provided with the cutout portion 7a. The film cartridge 1 is inserted and locked, and the film cartridge 1 cannot be inserted any further. In this locked state, although not shown in the figure, even if the opened cartridge lid 13 is closed, it cannot be closed because it interferes with the protruding portion of the film cartridge 1. Further, this locking position (height H from the loading position) is set higher than the position h (FIG. 3) lifted by the ejector 21 toward the opening side, and the cartridge chamber 12 of the locking position is set at this locking position. The portion protruding from the opening is set to a size that is easy for the user to grasp.

The locking member 25 on the right side (B) of FIG. 4 shows the loaded state of the unexposed film cartridge 1. In the unexposed film cartridge 1, the bar code portion of the rotary plate 7 is located in the display portion 2a on the bottom surface and the recessed portion due to the cutout portion 7a is not formed. The bottom surface is flat, and the cartridge chamber 12 at the time of loading. The tip of the locking member 25 protruding inward
When the film cartridge 1 contacts 25a, the tip 25
As a is pushed downward, the locking member 25 pivots outward and comes off, without locking the film cartridge 1
Is inserted all the way to the inside, and when the cartridge lid 13 is closed, a loading state similar to the chain line in FIG. 3 is obtained.

Next, the operation of the cartridge loading device of the present embodiment constructed as described above will be described. When the unexposed film cartridge 1 is inserted into the cartridge chamber 12 from the state shown in FIG. 1, the bottom surface portion is brought into contact with the locking piece 21a of the ejector 21 without being locked by the locking member 25 as described above. Three
Stop as indicated by the solid line. When the cartridge lid 13 is closed from this state, the pressing piece 13b of the cartridge lid 13 pushes the ejector 21, and the spool holder (not shown) on the inner surface of the cartridge lid 13 causes the film cartridge 1 to move to the chain line in FIG. ), The spool driver 30 and the light shielding lid driver 32 are engaged.

In order to take out the exposed film cartridge 1 from the cartridge chamber 12, the key member 20 is used to rewind the photographic film when the exposure is sequentially performed according to the feeding of the photographic film from the film cartridge 1 and the photographing is completed. To the release position to move the cartridge lid 13
When the lock of the cartridge lid 13 is released, the cartridge lid 13
The eject spring 22 of 21 urges the film cartridge 1 to open in the opening direction, the ejector 21 disengages the spool driver 30 and the light shielding lid driver 32 from the film cartridge 1, and It is jumped up to a high position (H or higher) on the opening side.

Before the cartridge lid 13 is opened,
The spool 3 of the film cartridge 1 is rotated to a predetermined position and the state display is switched to the exposed state, and the jumped film cartridge 1 is locked with the locking member 25, and the locking position is the contact position with the ejector 21. It is higher so that you can easily take it out by holding the protruding part.

The form of the state display of the film cartridge 1 in the above example and the shape of the locking member 25 accompanying it can be variously changed, and the design can be appropriately changed to a structure for locking the insertion of the film cartridge 1 in the exposed state. Is.

[Brief description of drawings]

FIG. 1 is a perspective view showing a loaded state of a film cartridge of a camera provided with a cartridge loading device according to an embodiment of the present invention with the bottom of the camera facing upward.

FIG. 2 is a perspective view of a principal part showing a lock mechanism of a cartridge lid and an ejector in a loaded state of a film cartridge.

FIG. 3 is a cross-sectional view of a main part of a cartridge chamber part illustrating a supporting position of a film cartridge by an ejector.

FIG. 4 is a schematic cross-sectional view of the cartridge chamber portion showing the operating state of the left and right locking members.

[Explanation of symbols]

 1 film cartridge 2 cartridge body 2a display section 3 spool 4 film outlet 5 light-shielding lid 7 rotating plate 7a notch section 10 camera 11 camera body 12 cartridge chamber 13 cartridge lid 13a locking section 13b pressing piece 20 key member 21 ejector 22 eject Spring 25 Locking member 25a Tip 27 Torsion spring 30 Spool driver 32 Shade lid driver

Claims (1)

[Claims] 1. A camera provided with a cartridge chamber for storing a film cartridge containing a photographic film wound up on a spool up to the leading end thereof, and a cartridge lid for opening and closing an opening of the cartridge chamber, the camera being inserted into the cartridge chamber. An ejector for urging the film cartridge in the direction of the opening by an eject spring, and a locking member for locking a part of the film cartridge set in the exposed state to prevent the film cartridge from being loaded into the cartridge chamber. The amount of movement of the film cartridge by the ejector is an amount required to disengage the spool and the light shielding lid of the film cartridge from the respective drivers, and
The locking position of the film cartridge by the locking member is closer to the opening side than the moving position by the ejector, and the urging force of the eject spring is the film cartridge exposed by the ejector when the cartridge lid is opened. The cartridge loading of the camera is characterized in that the strength is such that it jumps up to a higher position on the opening side than the locking position of the locking member within the range where it does not jump out of the opening, and locks it on the locking member. apparatus.