JP2000019594A - Locking releasing device for cartridge chamber opening/ closing cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a locking releasing device for cartridge chamber opening/ closing cover capable of opening a cartridge chamber opening/closing cover by surely releasing its locking in a closing position with a locking member, from the outside of an equipment, in spite of a simple constitution, even if the cartridge chamber opening/closing cover can not be opened. SOLUTION: In an equipment provided with a cartridge chamber for freely attachably/detachably housing a film cartridge, the cartridge chamber cover opening/closing cover 14 for covering the cartridge chamber, to make its opening/closing free and with the locking member 16 for locking the cartridge chamber opening/closing cover in the closing position, the device is provided with a locking releasing hole 14c capable of reaching the locking member from the outside of the equipment and the releasing of the locking by the locking member and a light shielding member for shielding the locking releasing hole from light.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cartridge chamber in which a film cartridge is removably stored, a cartridge chamber opening / closing cover for opening and closing the cartridge chamber, and
A locking member that locks the cartridge chamber opening / closing lid in the closed position, wherein the locking is such that the locking can be forcibly released from outside the apparatus. .

[0002]

2. Description of the Related Art A cartridge chamber in which a film cartridge is removably accommodated, a cartridge chamber opening / closing cover for opening and closing the cartridge chamber, and a locking member for locking the cartridge chamber opening / closing lid in a closed position are provided. As a device, a camera has been well known.

In a camera using a new (IX240) film cartridge, when the film cartridge is stored in the cartridge chamber and the cartridge chamber opening / closing lid is then placed in the closed position, the locking member engages the cartridge chamber opening / closing lid in the closed position. When the film is stopped, the film is automatically fed out of the film cartridge, and the film cannot be pulled out from the film cartridge. Rewind. And the film is automatically sent out like this,
In a camera in which the film is automatically rewound into the film cartridge, the locking of the opening / closing lid of the cartridge chamber by the locking member cannot be released until the film is almost completely rewound into the film cartridge. It is often done. This is to prevent the film drawn from the film cartridge from being erroneously exposed due to the cartridge chamber opening / closing lid being accidentally opened while the film is being drawn from the film cartridge.

Particularly, in a camera using a new film cartridge, the opening and closing of the movable light shielding door at the film entrance and exit of the new film cartridge and the locking and unlocking of the cartridge chamber opening / closing lid are performed in an interlocked manner. .

In such a camera, if the function of the camera is stopped for some reason after the new film is sent out from the new film cartridge, the opening / closing lid of the cartridge chamber cannot be opened, and the new film cartridge cannot be removed from the cartridge chamber. You will not be able to take it out.

Japanese Patent Application Laid-Open No. 9-212598 discloses a configuration in which a new film can be manually and substantially completely rewound into a new film cartridge in the case described above. If the new film can be completely rewound into the new film cartridge manually, the movable light-shielding door at the film entrance and exit of the new film cartridge will be closed, and the cartridge room opening / closing lid will be unlocked. To release the photographed new film from the cartridge chamber without causing erroneous exposure.

Japanese Patent Application Laid-Open No. 7-128716 discloses a structure for selectively manually operating a movable light-shielding door at a film entrance in a new film cartridge. Here, when the movable light-shielding door does not automatically move to the closed position even after the new film is completely wound into the new film cartridge, the movable light-shielding door is manually moved to the closed position to allow the cartridge chamber to be moved. By releasing the lock of the opening / closing lid and opening the opening / closing lid of the cartridge chamber, the photographed new film can be taken out from the cartridge chamber without causing erroneous exposure.

[0008]

As described above, in a camera using a new film cartridge, when the function of the camera stops after a new film is sent out from the new film cartridge, the cartridge chamber opening / closing lid is opened. The new film cartridge cannot be removed from the cartridge chamber. Further, the configurations disclosed in these two publications require many components and are complicated.

SUMMARY OF THE INVENTION The present invention has been made under the above circumstances. It is an object of the present invention to reliably release a cartridge chamber opening / closing lid to a closed position by a locking member from the outside of a device with a simple structure. An object of the present invention is to provide a cartridge chamber opening / closing lid lock release device capable of opening a chamber opening / closing lid.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object of the present invention, a cartridge chamber opening / closing lid unlocking device for a camera according to the present invention comprises a cartridge chamber in which a film cartridge is removably stored. An opening and closing cover for freely opening and closing the cartridge chamber, and a locking member for locking the opening and closing lid of the cartridge chamber in a closed position, wherein the locking member can be reached from outside the device and locked. It is characterized in that it is provided with an unlocking hole that enables the locking by the member to be released.

[0011] In the cartridge chamber opening / closing lid lock release device according to the present invention, which is configured as described above, when the cartridge chamber opening / closing lid cannot be opened due to a cause other than running out of the battery, the above-described device is disconnected. The lock is reached by reaching the lock member from the outside of the device via the lock release hole and releasing the lock by the lock member in a light-shielding cover such as a dark bag or a dark room. The cartridge chamber can be reliably released to open the cartridge chamber opening / closing lid.

Here, the lock release hole is configured so that the film extruded from the film cartridge in the cartridge chamber is not exposed to external light. For this purpose, it is possible to provide a light blocking member for blocking the lock release hole.

In the cartridge chamber opening / closing lid lock release device according to the present invention, the light blocking member has a light blocking property and is attached to the device to release the lock release hole. It is preferable that the sealing member seals the seal.

[0014] The seal member further simplifies the configuration of the light shielding member. The light-shielding member may be formed of a thin film having a light-shielding property that is formed integrally with the device and closes the unlocking hole, or has a light-shielding property and is packed in the unlocking hole and locked. It is also possible to use a padding for closing the release hole.

According to the present invention, the unlocking hole is provided in the main body or exterior housing of the device in which the cartridge chamber in which the film cartridge is removably accommodated is formed, or in the device so as to openably and closably cover the cartridge chamber. It can be formed in the cartridge chamber opening / closing lid connected to the main body or the outer housing. Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment First, referring to FIGS. 1 to 3, a cartridge chamber opening / closing lid lock release device according to a first embodiment of the present invention will be described in detail. Will be described. Here, FIG. 1 shows an external view of a camera which is an example of a device having a cartridge chamber opening / closing lid lock release device according to the first embodiment of the present invention, in which the cartridge chamber opening / closing lid is arranged at a closed position. FIG. 2 is a perspective view schematically showing the camera of FIG. 1 with the cartridge chamber opening / closing lid disposed in an open position; FIG. 2 is an enlarged perspective view schematically showing a cartridge chamber opening / closing lid lock release device in the camera of FIG. 1.

A camera 12 having a cartridge chamber opening / closing lid unlocking device 10 according to a first embodiment of the present invention.
Is a camera that uses a new film. A new film cartridge chamber opening / closing cover 14 is provided on the lower surface of the main body 12a.
The new film cartridge chamber opening / closing lid 14 can be opened / closed about a trailing edge 14a in this embodiment. That is, the rear end 14a of the new film cartridge chamber opening / closing lid 14 is connected to the lower surface of the main body 12a of the camera 12 via a hinge-like structure. The hinge-shaped structure may be a hinge formed independently of the rear edge 14a and the lower surface of the main body 12a and fixed to the rear edge 14a and the lower surface of the main body 12a. Between the rear edge 14a of the new film cartridge chamber opening / closing lid 14t and the lower surface of the main body 12a while the new film cartridge chamber opening / closing lid 14 is formed integrally with the main body 12. Can be constituted by a thin, flexible bridge-like portion interposed between them, and can be constituted by a thin, flexible object formed independently of the trailing edge 14a and the lower surface of the main body 12a and fixed thereto. You can also.

A new film cartridge chamber 15 is provided in the main body 12a of the camera 12 in correspondence with the new film cartridge chamber opening / closing lid 14. When the new film cartridge chamber opening / closing lid 14 is opened, the new film cartridge chamber 15 is opened. A new film cartridge (not shown) can be attached to and detached from 15.

After the new film cartridge (not shown) is inserted into the new film cartridge chamber 15 and the new film cartridge chamber opening / closing cover 14 is placed in the closed position as shown in FIG. The movable light-shielding door of the access opening is automatically opened, and a new film is automatically pushed out from the above-mentioned film access opening (not shown) toward a spool chamber (not shown) via a film aperture (not shown) provided in the main body 12a, A predetermined amount is automatically wound around a spool (not shown) in a spool chamber (not shown) in preparation for photographing.

When the use of the unillustrated new film is completed and the unillustrated rewind button of the main body 12a is pressed, or when the unillustrated new film is pulled out from the unillustrated new film cartridge to the use limit, the unillustrated new film is used. A new film (not shown) is automatically rewound with respect to the cartridge. After the new film (not shown) is completely rewound into the new film cartridge (not shown), the movable light-shielding door (not shown) at the film entrance (not shown) is automatically closed.

An openable / closable slide barrier 12b is provided on the front surface of the main body 12a.
2b covers the photographing lens on the front of the main body 12a, the objective window, the photometric window and the autofocus window of the finder device when it is disposed in the closed position shown in FIG. 1, and moves leftward from the closed position shown in FIG. When the camera is disposed at the open position, the objective lens, the photometric window, and the autofocus window of the photographic lens and the finder device are opened to the external space.

A shutter button, a flash device, a liquid crystal display, and various operation buttons (not shown) are arranged on the upper surface of the main body 12a. As shown in FIG. 2, the new film cartridge chamber opening / closing lid 14 has a claw 14b formed on the inner surface of its free end.

In the main body 12a, a locking member 16 is provided at a position corresponding to the locked claw 14b of the new film cartridge chamber opening / closing lid 14 in the closed position. As shown in FIG. 3, the locking member 16 has a rotation center hole 16a.
And is provided rotatably within a predetermined range in the main body 12a via a rotation center shaft (not shown) inserted into the rotation center hole 16a. One end of the predetermined range is an engagement position where the locking member 16 engages the locking claw 16b at the tip thereof with the locked claw 14b of the new film cartridge chamber opening / closing lid 14 in the closed position. The other end of the range is the disengagement position where the above engagement is released. The locking member 16 is urged toward the engagement position by a torsion coil spring 16c wound around a rotation center shaft (not shown), and a new film cartridge (not shown) is inserted into the new film cartridge chamber 15. After the new film cartridge chamber opening / closing lid 14 is disposed at the closed position, the new film (not shown) is pulled out from the new film cartridge (not shown), and the new film cartridge (not shown) is completely retracted into the new film cartridge (not shown) until the new film is completely rewound. It is held in the matching position.

When the new film (not shown) is completely rewound into the new film cartridge (not shown), the new film cartridge chamber opening / closing cover / opening / closing button 18 on the lower surface of the main body 12a is operated, so that the locking member is opened. 16
Can be moved from the engaged position to the disengaged position. During this time, the new film cartridge chamber opening / closing lid 1
By pulling the free end of 4 away from the lower surface, the new film cartridge chamber opening / closing lid 14 can be turned to the open position.

An unlocking hole 14c is formed at a position near the free end of the new film cartridge chamber opening / closing cover 14 in correspondence with the locked claw 14b. The lock release hole 14c is usually closed by a closing member. In this embodiment, the closing member is constituted by a light-shielding seal member 20 attached to the outer surface of the new film cartridge chamber opening / closing lid 14. .

In the camera 12, while a new film (not shown) is automatically fed from a new film cartridge (not shown) accommodated in a new film cartridge chamber 15 of the main body 12a, a new film (not shown) is transferred to a new film cartridge (not shown). If the operation of the camera 12 is stopped during automatic rewinding or in a state where a new film (not shown) is being taken out of the new film cartridge, the above-mentioned film opening / closing opening (not shown) of the new film cartridge (not shown) is stopped. The movable light-shielding door (not shown) is not automatically closed, and the locking member 16 is locked to the locked claw 14b of the new film cartridge chamber opening / closing lid 14 even if the new film cartridge chamber opening / closing lid / opening / closing button 18 is operated. The engagement of the pawl 16a cannot be released. That is, the new film cartridge chamber opening / closing lid 1
4 cannot be moved to the open position.

If this happens due to a dead battery in the camera, the problem can be solved by replacing the battery with a new one. Alternatively, after being placed in a dark room, the seal member 20 is peeled off, an elongated and relatively hard object is inserted into the lock release hole 14c, and the engagement of the locking member 16 with the locked claw 14b is performed using the elongated and relatively hard object. Stop Claw 1
6a is released. Thereafter, the new film cartridge chamber opening / closing lid 14 is manually moved to the open position, and if a new film (not shown) is drawn from the new film cartridge (not shown), the spool shaft of the new film cartridge (not shown) is manually operated. The new film (not shown) is completely rewound into a new film cartridge (not shown), and the movable light-shielding door (not shown) is manually moved to the closed position. Thereafter, a new film cartridge (not shown) can be taken out of the new film cartridge chamber 15, and a new film (not shown) is not accidentally exposed during this time.

The material of the seal member 20 may be any material as long as it has a light shielding property. Even if it does not itself have a light-shielding property, it may have a light-shielding property added by a light-shielding paint.

When the new film cartridge chamber opening / closing cover 14 is located at the closed position,
New film cartridge chamber 1 through the lock release hole 14c
5 so that a new film drawn from a new film cartridge (not shown) in the new film cartridge chamber 15 can be prevented from being exposed to the light. If so, there is no need for a light shielding member that shields the lock release hole 14c as in the seal member 20.

[Second Embodiment] Next, a cartridge chamber opening / closing lid lock release device according to a second embodiment of the present invention will be described in detail with reference to FIG. Here, the unlocking device for the cartridge chamber opening / closing lid according to the second embodiment is similar to the cartridge chamber opening / closing lid unlocking apparatus according to the first embodiment described above with reference to FIGS. Applied to cameras of the same type as the camera with the device. Therefore, the same components as those in the first embodiment described in the second embodiment are denoted by the same reference numerals as those in the first embodiment, and are described in detail. Is omitted.

FIG. 4 shows the appearance of a camera which is an example of a device having a cartridge chamber opening / closing lid lock release device according to a second embodiment of the present invention, in which the cartridge chamber opening / closing lid is arranged at an open position. It is a perspective view which shows roughly in the state which carried out.

The second embodiment is different from the first embodiment in that the new film cartridge chamber opening / closing lid 14 is not provided with an unlocking hole 14c, and is instead replaced by a camera. An unlocking hole 12c is formed in a portion of the outer surface of the main body 12a corresponding to the locking claw 16a of the locking member 16 in the main body 12a.

In FIG. 4, the lock release hole 12c is formed in the lower end region of the front surface on the outer surface of the camera body 12a. However, the lock release hole 12c is formed by an elongated and relatively rigid object inserted through the lock release hole 12c. As long as the engagement of the locking claw 16a of the locking member 16 with the locked claw 14b of the new film cartridge chamber opening / closing lid 14 can be released, it can be formed in any area of the outer surface. . For example, it can be formed in the area near the free end of the new film cartridge chamber opening / closing lid 14 on the lower surface of the outer surface of the main body 12a.

The unlocking hole 12c is also normally covered by the seal member 22. The material of the seal member 22 may be anything as long as it has a light-shielding property. Even if the seal member 22 itself does not have a light-shielding property, a material having a light-shielding property added with a light-shielding paint may be used.

When the new film cartridge chamber opening / closing cover 14 is located at the closed position, the locking release hole 12c is
New film cartridge chamber 1 through lock release hole 12c
5 so that a new film drawn from a new film cartridge (not shown) in the new film cartridge chamber 15 can be prevented from being exposed to the light. If so, there is no need for a light shielding member that shields the lock release hole 12c as in the seal member 22.

As is apparent from the above description, the cartridge chamber opening / closing lid unlocking device according to the present invention comprises a cartridge chamber in which a film cartridge is removably stored, and a cartridge which covers the cartridge chamber in an openable / closable manner. Any type of device having a chamber opening / closing lid and a locking member for locking the cartridge chamber opening / closing lid at the closed position can be provided. Another example of such a device other than the above-mentioned camera is, for example, a film scanner device.

Further, the invention of the present application can be expressed as follows. 1. A cartridge chamber opening / closing cover for covering the film cartridge chamber, a locking member for locking the cartridge chamber opening / closing lid in a closed state, and a locking release hole for enabling the locking state of the locking member to be released from outside And a lock release device for opening and closing the lid of the cartridge chamber.

[0038]

As is clear from the above description,
According to the present invention, it is possible to open the cartridge chamber opening / closing lid by reliably releasing the closed state of the cartridge chamber opening / closing lid by the locking member from the outside of the device, with a simple configuration.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing the appearance of a camera having a cartridge chamber opening / closing lid lock release device according to a first embodiment of the present invention in a state where the cartridge chamber opening / closing lid is arranged at a closed position. It is.

FIG. 2 is a perspective view schematically showing an appearance of the camera in FIG. 1 in a state where a cartridge chamber opening / closing lid is arranged at an open position.

3 is an enlarged perspective view schematically showing a cartridge chamber opening / closing lid lock release device in the camera shown in FIG. 1;

FIG. 4 is a perspective view schematically showing the appearance of a camera having a cartridge chamber opening / closing lid lock release device according to a second embodiment of the present invention in a state where the cartridge chamber opening / closing lid is disposed at an open position. It is.

[Explanation of symbols]

 Reference Signs List 10 Cartridge chamber opening / closing lid lock release device 12 Camera (equipment) 14 Cartridge chamber opening / closing lid 14b Engagement claw 14c Lock release hole 15 Cartridge chamber 16 Locking member 16b Locking claw 20 Seal member (light shielding member)

Claims (3)

[Claims] A cartridge chamber in which a film cartridge is removably accommodated, a cartridge chamber opening / closing cover for opening and closing the cartridge chamber, and a locking member for locking the cartridge chamber opening / closing lid in a closed position. A device for unlocking a cartridge opening / closing lid, wherein the device includes a lock release hole which is capable of reaching a locking member from outside the device and releasing the locking by the locking member. 2. The lock release device according to claim 1, further comprising a light blocking member for blocking the lock release hole. 3. The unlocking device for a cartridge chamber opening / closing lid according to claim 2, wherein the light-shielding member is a seal member which has a light-shielding property and is attached to the device to close the unlocking hole. .