JPH07295084A - Film cartridge loading device and camera - Google Patents

Abstract

PURPOSE:To prevent the misoperations of a releasing means and the operation of a different operating part in a mistake for the releasing means and to make the appearance neat by arranging an operating part, actuating the releasing means releasing the blocking of insertion by an insertion blocking means in a range covered with a cartridge chamber cover. CONSTITUTION:The operating part, that is, a releasing button 13 for actuating a releasing lever 7 releasing the blocking of the insertion by insertion blocking means (a hook 4 and a spring 6) is arranged in the range covered by the cartridge chamber cover 15. The releasing button 13 is attached to the top end of the releasing lever 7, integrally moved with the releasing button 13 and exposed outside by the opening of the cartridge chamber cover 15, to be operated. Then, the releasing button is depressed by a finger, etc., to slide the releasing lever 7. Thus, such a constitution that only at the time of loading the film cartridge l, the releasing lever can be operated is adopted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a film cartridge having a display portion for indicating the film state such as whether the film to be stored is unexposed, exposed or partially exposed, The present invention relates to an improvement of a film cartridge loading device equipped with an insertion blocking means for blocking insertion and a camera equipped with the device.

[0002]

2. Description of the Related Art A conventional film cartridge loading device shown in US Pat. No. 4,998,123 is disclosed in FIG.
9 and FIG.

In these drawings, reference numeral 101 denotes a film cartridge, which has a take-up spool 102 inside. Reference numeral 103 denotes a data disc plate integrally attached to the take-up spool 102, and indicates the state of the film in the film cartridge 101 (state such as unexposed or exposed) by the stop phase of the data disc plate. As shown in FIG. 8, the tip end portion 104a of the hook 104 is the take-up spool 1 except when it is not exposed.
02 is caught in the notch 102a (in this case, the data disk plate 103 does not block the notch 102a), so that the film cartridge 101 is prevented from being inserted. Reference numeral 105 designates the hook 104 as a shaft 106
A spring for urging counterclockwise around the
It is a cartridge chamber lid that rotates around.

As described above, in the case of the non-exposed film cartridge 101, the hook 104 rotates counterclockwise according to the urging force of the spring 105, and the tip portion 10 of the hook 104 rotates.
Since 4a is caught in the cutout portion 102a of the take-up spool 102 (see FIG. 8), the further insertion of the film cartridge 101 is prevented, and it is possible to take a picture by overlapping the exposed film. It can be prevented.

On the other hand, when the film cartridge to be inserted is an unexposed film cartridge, as shown in FIG. 9, the cutout portion 102a of the take-up spool 102 is located at the position of the tip portion 104a of the hook 104. Can be loaded because they are in different positions.

That is, the structure is such that loading of a film cartridge other than unexposed is prohibited.

Further, in Japanese Unexamined Patent Publication (Kokai) No. 6-35121, a release button for releasing the loading prohibiting member such as the hook 104 is provided on the bottom of the camera, and if necessary, a film cartridge other than unexposed film (for example, partial exposure). Film cartridge) has been proposed.

[0008]

By the way, the above-mentioned FIG.
And in the conventional example shown in FIG. 9, as shown in FIG.
When the unexposed film cartridge is loaded, the cartridge 104 is rotated clockwise around the shaft 106 against the spring 105 that biases the hook 104, which is a loading prohibition member, to enable loading, but then the cartridge chamber lid 107 is closed. Even in the opened state, the tip portion 104a of the hook 104 is configured to be in contact with the exterior surface 101a of the film cartridge 101, so that the tip portion 104a of the hook 104 is always attached to the exterior surface 101a of the film cartridge 101 by the spring 1.
Due to the bias of 05, the pressure was still applied.

Therefore, when the film is fed from the film cartridge, the film cartridge cannot move freely according to the state of the film, so that the film cannot be fed smoothly or the film feeding load is increased. . In addition, this may cause the film flatness of the photographic screen to be impaired, or the film may be scratched in some cases.

(Object of the Invention) A first object of the present invention is to prevent the erroneous operation of the releasing means by making the releasing means a structure that does not appear in the external appearance when the cartridge chamber lid is closed. (EN) A film cartridge loading device and a camera capable of preventing different operation parts from being mistakenly recognized as release means and operated and having a clean appearance.

A second object of the present invention is to smoothly feed the film from the film cartridge, and
To provide a film cartridge loading device and a camera capable of preventing the film from being scratched at the film take-out port and impairing the film flatness of a photographing screen when the film is fed out.

A third object of the present invention is to provide a film cartridge loading device and a camera that do not require any new evacuation means.

[0013]

In order to achieve the first object, the present invention according to claim 1 or 5 provides an operating portion for operating a releasing means for releasing the insertion blocking by the insertion blocking means. It is arranged within the range covered by the cartridge chamber lid, and the releasing means can be operated only when the film cartridge is loaded.

In order to achieve the second object, the present invention according to claim 2 or 5 is carried out after the unexposed film cartridge which is allowed to be inserted by the insertion preventing means is loaded into the cartridge chamber. A retracting means for retracting the insertion blocking means from the abutting position of the film cartridge is provided in association with the closing operation of the chamber lid, and the closing operation of the cartridge chamber lid makes contact with the exterior surface of the film cartridge when loading is completed. A part of the insertion preventing means is retracted from the film cartridge exterior surface position, and in this state, an external force is applied only to the take-up spool inside the film cartridge.

Also in order to achieve the above second object,
The present invention according to claim 3 or 5 interlocks with a closing operation of the cartridge chamber lid, which is performed after an unexposed film cartridge or a film cartridge other than the unexposed film cartridge is loaded into the cartridge chamber by operating the releasing means, Evacuation means for retracting the insertion blocking means from the abutting position of the film cartridge is provided, and a part of the insertion blocking means abutting on the film cartridge exterior surface when loading is completed is retracted from the film cartridge exterior surface position. In this state, the external force is applied only to the take-up spool inside the film cartridge.

In order to achieve the third object, the present invention according to claim 4 or 5 is characterized in that the releasing means is interlocked with the closing operation of the cartridge chamber lid and the insertion preventing means is moved from the abutting position of the film cartridge. The releasing means is configured so that the releasing means has a part of the function of the retracting means.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on the illustrated embodiments.

1 to 5 are views relating to the first embodiment of the present invention, and FIG. 1 is a sectional view in the vicinity of a cartridge chamber of a camera showing a state when a film cartridge other than unexposed film is inserted, 2 is a cross-sectional view of the vicinity of the cartridge chamber showing the state when the release button is operated from the state of FIG. 1 and a film cartridge other than unexposed is loaded, and FIG. 3 is a perspective view showing the cartridge chamber of FIG. 1 and its vicinity. FIG. 4 is a cross-sectional view of the vicinity of the cartridge chamber showing the state when the unexposed film cartridge is inserted, and FIG. 5 is a cross-sectional view of the vicinity of the cartridge chamber showing the state when the cartridge chamber lid is closed from the state of FIG. It is a figure.

First, the components of the portion according to the present invention will be described with reference to FIGS.

In FIGS. 1 and 3, 1 is a film film cartridge, 2 is a data disk plate attached to the take-up spool 3, and like the conventional example, the film cartridge 1 is stopped by the stop phase of the data disk plate 2. In this case, the notch 3a of the take-up spool 3 is a leading end portion 4a of a hook 4 which will be described later as a loading prohibiting member as shown in FIG.
It is designed to be caught in the position. Reference numeral 5 denotes a shaft which is a rotation center of the hook 4, and a spring 6 having one end hooked on the camera body is wound around the shaft 5. The hook 4 is always biased counterclockwise by the spring 6, and the hook 4 has a pin 4b.
And is regulated by the cam surface 7a of the release lever 7 described later,
The initial position is set.

A release lever 7 is a hole 7 having cam surfaces 7a, 7b and 7c for controlling the pin 4b of the hook 4.
f and elongated holes 7d and 7e into which the shafts 9 and 10 fixed to the camera body 12 are fitted, and are slidably supported in the vertical direction in FIG. Further, the release lever 7 is provided with a spring hook portion 7g, a spring 8 is hooked between the release lever 7 and the main body pin 11, and is always biased downward in FIG.

A release button 13 is attached to the tip of the release lever 7 and moves integrally with the release lever 7.
As shown in FIG. 4, the cartridge chamber lid 15 described later is opened so that it can be exposed to the outside and can be operated, and the release lever 7 can be slid by pushing this with a finger or the like. Reference numeral 14 is an exterior cover of the camera, and 15 is a cartridge chamber lid rotatably supported about a shaft 16. Reference numeral 17 denotes a spool pressing member attached to the shaft 15a of the cartridge chamber lid 15, which is capable of sliding and rotating with respect to the shaft 15a. 1
Reference numeral 8 is a lid lock member slidably attached to the cartridge chamber lid 15, and is always biased by a spring 19 in the locking direction (downward in FIG. 1). 23
Is a fork gear.

A case will be described in which a film cartridge other than the unexposed film cartridge, for example, a partially exposed film cartridge is to be loaded in the above structure.

In this case, as shown in FIG. 1, the hooking portion 4a of the hook 4, which is a loading prohibiting member, is caught in the notch portion 3a of the take-up spool 3 provided in the film cartridge 1, and further loading is performed. It is not possible.

Here, when the user wants to take an image of the partially exposed portion, the release button 13 for releasing the state of the hook 4, which is the loading prohibiting member, is pressed.

FIG. 2 shows a state in which the user pushes the release button 13 in the direction of arrow A with a finger or the like. When the user pushes the release button 13 in the direction of arrow A, the release button 13 moves together with the release button 13. The release lever 7 slides upward in FIG. 2 against the spring 8 until its elongated holes 7d and 7e abut the shafts 9 and 10. Further, since the hole 7f also moves upward with this slide, the pin 4 of the hook 4
The cam surface contacting a moves 7a → 7b → 7c, whereby the hook 4 rotates clockwise about the shaft 5 against the spring 6. Then, the hook portion 4a of the hook 4
Will be retracted from the cartridge chamber B. Therefore, when the partially exposed film cartridge 1 is pushed in from this state, the loading can be completed without being caught by the hook 4 even if the cutout portion 3a is in the phase of being caught.

Since the release button 13 is necessary only when a film cartridge other than the unexposed film is loaded with the cartridge chamber lid 15 open, as shown in FIG. Cartridge chamber cover 1
It is set within the range covered by 5 and can be operated only when necessary. In addition, it is easy for the user to understand that the operation is performed when the cartridge chamber lid 15 is opened, and it is possible to prevent accidentally operating a different button as a release button. Moreover, as shown in FIG. 5, when the cartridge chamber lid 15 is closed, the release button 13 does not appear on the external appearance of the camera, so that a clean design is possible and unnecessary buttons are displayed on the external appearance. It will no longer confuse you.

Next, loading of the unexposed film cartridge 1 will be described with reference to FIGS. 4 and 5.

When the cartridge chamber lid 15 is opened and an unexposed film cartridge is loaded, the notch 3a is covered by the data disc plate 2 because the phase of the data disc plate 2 is at the unexposed position (FIG. 4). reference). As a result, the hooking portion 4a of the hook 4 does not enter the notch 3a. By pushing the film cartridge 1, the hook 4 rotates clockwise against the spring 6, and when the film cartridge 1 is pushed further, The hooking portion 4a of the hook 4 comes into contact with the exterior surface 1a of the film cartridge 1. Then, in this state, the position of loading completion shown in FIG. 4 is reached.

In the state shown in FIG. 4, since the hook 4 is biased counterclockwise by the spring 6, the hook 4a remains in contact with the exterior surface 1a of the film cartridge 1 as described above. However, when the cartridge chamber lid 15 is open, there is no problem because the film is neither fed out nor set in the shooting ready state.

When the loading of the film cartridge is completed as shown in FIG. 4, the operation of closing the cartridge chamber lid 15 is performed next.

In FIG. 5, the cartridge chamber lid 15 is completely closed, and the lid lock member 18 also completes the locking. When the cartridge chamber cover 15 is closed in this way, the take-up spool 3 in the film cartridge 1 is closed.
The upper part is supported by the fitting part 23a of the fork gear 23, and the lower part is supported by the spool pressing member 17 attached to the cartridge chamber lid 15.
The take-up spool 3 is regulated at the set position at the top and bottom.

Further, the cartridge chamber lid 15 has a surface 15b which pushes the release button 13 upward in FIG. 4 during the closing operation.
With the closing operation of the release lever 7, the release lever 7 also slides upward against the spring 8, and the cam surface of the hook 4 on which the pin 4b is in contact also moves 7a → 7b → 7c. As shown in FIG. When the chamber lid 15 is completely closed, the hooking portion 4a of the hook 4 is arranged to escape from the exterior surface 1a of the film cartridge 1.

Therefore, the film in the film cartridge 1 is firmly supported because the take-up spool 3 is supported by the fork gear 23 and the spool pressing member 17 and no biased biasing force is applied to the film cartridge 1. The film is sent out from the film cartridge in accordance with the rotation of the spool, and the film sent out freely fits the film cartridge 1.
The delivery force can be sufficiently secured, and the film scratches at the film take-out port of the film cartridge 1 and the flatness of the film in the photographing screen can be prevented from being adversely affected.

(Second Embodiment) FIGS. 6 and 7 are views relating to a second embodiment of the present invention, and FIG. 6 is a view showing a state when an unexposed film cartridge is inserted in the vicinity of a cartridge chamber. FIG. 7 is a sectional view in the vicinity of the cartridge chamber showing the state when the cartridge chamber lid is closed from the state of FIG. The same components as those in the embodiment of Ai 1 are designated by the same reference numerals.

6 and 7, reference numeral 24 denotes a release lever, which is a cam surface 24a for controlling the pin 4b of the hook 4,
In addition to having a hole 24f in which 24b and 24c are set, it also has elongated holes 24d and 24e that fit with the shafts 9 and 10, and can be slid up and down. Further, the spring 8 is hooked on the spring hook 24g, so that the spring hook 24g is always urged downward in FIG. 6, and also has the R surface 24h at the lowermost end, which completes the closing of the cartridge chamber lid 15, and the lid lock. When the member 18 is set, it comes into contact with the slope 18a thereof as shown in FIG. 7, and the release lever 24 is pushed upward.

In the above structure, when the unexposed film cartridge 1 is loaded as shown in FIG. 6, the hooking portion 4a of the hook 4 is urged by the spring 6 to come into contact with the exterior surface 1a of the film cartridge 1. There is.

Next, when the cartridge chamber lid 15 is closed,
As shown in FIG. 7, the lock member 18 of the cartridge chamber lid 15 is moved to the right by the spring 19 to move the cartridge chamber lid 15 to the right.
And the slope 18 of the lock member 18 is completed.
a comes to push up the R surface 24h of the release lever 24. Then, as in the case of FIG. 5, the pin 4b of the hook 4 is
Moves the cam surface of the release lever 24 in the order of 24a → 24b → 24c, whereby the hook 4 is rotated clockwise around the shaft 5 against the spring 6, and the hooked portion 4a of the hook 4 is formed into a film. It comes to escape from the surface 1a of the cartridge outer cylinder 1.

Therefore, as in the first embodiment, a sufficient film feeding force can be secured, and the film scratches at the film take-out port of the film cartridge 1 and the flatness of the film in the photographing screen are not adversely affected. Is something that can be done.

Also in this embodiment, the release lever 24 is formed with an operating portion 24i similar to the broken line in FIG. 6 so that the film cartridge other than the unexposed film can be loaded as in the first embodiment. Can be made.

According to each of the above-mentioned embodiments, the release button 7 which is a loading prohibiting member for the film cartridge other than the unexposed film cartridge.
Is provided within the range covered by the cartridge chamber lid 15, the release button 7 can be operated only when the film cartridge is loaded, so that there is no mistake in pressing the button. Moreover, since the release button 7 does not appear in the appearance when the cartridge chamber lid 15 is closed,
Since unnecessary buttons cannot be seen when the cartridge chamber lid 15 is closed, mistakes in button operation are eliminated, and the number of buttons is reduced in appearance, and a camera with a neat appearance can be made.

Further, according to the second embodiment, the distal end portion 24a of the release lever 24, which is a loading prohibiting member, is connected to the film cartridge 1 in association with the closing operation of the cartridge chamber lid 15.
Because it has a structure to be retracted from the renovated surface 1a of
Since only the take-up spool 3 in the film cartridge 1 can be supported and the biased biasing force is not applied to the film cartridge 1, the film cartridge 1 can freely move according to the state of the film when the film is sent out from the film cartridge. It is possible to smoothly feed, and at the time of this feeding, there is no need to scratch the film at the film take-out port or to damage the film flatness of the shooting screen, and it is expected that the drawing performance without scratches will be greatly improved. . Further, means for releasing the insertion prevention by the hook 4 and the refurbished surface 1 of the film cartridge 1
Since the release lever 24 also serves as a means for retracting the tip end portion 24a from a (providing the R surface 24h), it is not necessary to newly provide a dedicated retracting means.

(Correspondence between Invention and Embodiment) In this embodiment, the hook 4 and the spring 6 correspond to the insertion preventing means of the present invention, and the release levers 7 and 24 and the release button 13 correspond to the releasing means of the present invention. The lid lock member 18 and the release lever 24 correspond to the retracting means of the present invention.

The above is the correspondence relationship between each configuration of the embodiments and each configuration of the present invention. However, the present invention is not limited to the configurations of these embodiments, and the functions shown in the claims and further implemented. It goes without saying that any structure may be used as long as the functions of the examples can be achieved.

(Modification) The present invention can be applied to an image recording medium other than a film.

Further, the present invention may be applied to a cartridge of a type other than the film cartridge described in the embodiment, a cartridge having an image recording medium other than a film, and a cartridge of another type or a load other than the cartridge. Good.

Further, the present invention can be similarly applied even if the loading direction of the film cartridge is not from the bottom side of the camera but is from the top or the side.

Furthermore, although the present invention has been described as applied to a camera such as a single-lens reflex camera, a lens shutter camera, a video camera, etc., it can also be applied to other optical devices and other devices, and also as a constituent unit. Is something that can be done.

Furthermore, the present invention may be constructed by appropriately combining the above-mentioned embodiments or their techniques.

[0050]

As described above, according to the present invention as set forth in claim 1, the operating portion for operating the releasing means for releasing the insertion blocking by the insertion blocking means is within the range covered by the cartridge chamber lid. The release means can be operated only when the film cartridge is loaded.

Therefore, when the cartridge chamber lid is closed, the releasing means has a structure that does not appear in the exterior, and prevents erroneous operation of the releasing means or operates by erroneously recognizing a different operating portion as the releasing means. It is possible to prevent the product from falling off and to have a clean appearance.

Further, according to the present invention as defined in claim 2 or 5, it is interlocked with the closing operation of the lid of the cartridge chamber, which is performed after the unexposed film cartridge which is allowed to be inserted by the insertion preventing means is loaded into the cartridge chamber. Then, a retracting means for retracting the insertion preventing means from the abutting position of the film cartridge is provided, and a part of the inserting preventing means abutting against the film cartridge exterior surface at the time of completion of loading is provided by the closing operation of the cartridge chamber lid. By retreating from the film cartridge exterior surface position, in this state, no external force is applied to anything other than the take-up spool in the film cartridge.

According to the third or fifth aspect of the present invention, the operation of the unexposed film cartridge or the film cartridge other than the unexposed film cartridge by the operation of the releasing means is performed after the cartridge chamber is closed. A retracting means for retracting the insertion preventing means from the abutting position of the film cartridge is provided in association with the closing operation, and a part of the inserting preventing means abutting against the film cartridge exterior surface at the time of completion of loading is attached to the film cartridge exterior. By retreating from the surface position, in this state, external force is applied only to the take-up spool in the film cartridge.

Therefore, the film can be smoothly fed out from the film cartridge, and the film can be scratched at the film take-out port when the film is fed out.
It is possible to prevent the film flatness of the shooting screen from being impaired.

According to the present invention as defined in claim 4 or 5, the releasing means is moved in the direction of retracting the insertion preventing means from the abutting position of the film cartridge in conjunction with the closing operation of the cartridge chamber lid. The releasing means has the function of the retreating means.

Therefore, it is not necessary to newly provide a dedicated evacuation means.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of the vicinity of a cartridge chamber of a camera showing a state in which a film cartridge other than unexposed film is inserted in a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the vicinity of a cartridge chamber showing a state in which a release button is operated from the state of FIG. 1 and a film cartridge other than unexposed film is loaded.

FIG. 3 is a perspective view showing the cartridge chamber of FIG. 1 and its vicinity.

FIG. 4 is a cross-sectional view of the vicinity of a cartridge chamber showing a state when an unexposed film cartridge is inserted in the first embodiment of the present invention.

FIG. 5 is a cross-sectional view of the vicinity of the cartridge chamber showing the state when the cartridge chamber lid is closed from the state of FIG.

FIG. 6 is a cross-sectional view of the vicinity of the cartridge chamber showing a state where an unexposed film cartridge is inserted in the second embodiment of the present invention.

FIG. 7 is a cross-sectional view of the vicinity of the cartridge chamber showing the state when the cartridge chamber lid is closed from the state of FIG.

FIG. 8 is a cross-sectional view of the vicinity of the cartridge chamber showing a state in which a film cartridge other than unexposed film is inserted into a conventional camera.

FIG. 9 is a cross-sectional view of the vicinity of the cartridge chamber showing a state where an unexposed film cartridge is inserted into a conventional camera.

[Explanation of symbols]

 1 Film Cartridge 2 Data Disc Plate 3 Winding Spool 3a Notch 4 Hook 4a Tip 6 Spring 7 Release Lever 13 Release Button 15 Cartridge Chamber Cover 24 Release Lever 24a Tip 24h R Surface

Claims (5)

[Claims] 1. A cartridge chamber in which a film cartridge having an indicator for indicating a state of a film to be stored is loaded, a cartridge chamber cover for closing the cartridge chamber, and a display of a film cartridge inserted in the cartridge chamber. In the film cartridge loading device, the releasing means is provided with an insertion preventing means for preventing the insertion of the film when the portion shows a film state other than unexposed, and a releasing means for releasing the insertion prevention by the insertion preventing means. A film cartridge loading apparatus, wherein an operating section for operating the film cartridge loading apparatus is arranged within a range covered by the cartridge chamber lid. 2. A cartridge chamber in which a film cartridge having an indicator for indicating a state of a film to be stored is loaded, a cartridge chamber cover for closing the cartridge chamber, and a display of the film cartridge inserted in the cartridge chamber. In a film cartridge loading device having an insertion blocking means for blocking the insertion of the film when the section indicates a film state other than unexposed, the unexposed film cartridge which is allowed to be inserted by the insertion blocking means is the cartridge. A film cartridge loading apparatus comprising: a retracting unit that retracts the insertion blocking unit from the abutting position of the film cartridge in conjunction with the closing operation of the cartridge chamber lid performed after the cartridge is loaded in the chamber. 3. A cartridge chamber in which a film cartridge having an indicator for indicating the state of a film to be stored is loaded, a cartridge chamber lid for closing the cartridge chamber, and an indication of the film cartridge inserted in the cartridge chamber. In a film cartridge loading device provided with an insertion blocking means for blocking the insertion of the film when the portion shows a film state other than unexposed and a releasing means for releasing the insertion blocking by the insertion blocking means, Retraction means for retracting the insertion blocking means from the abutting position of the film cartridge is provided in conjunction with the closing operation of the cartridge chamber lid performed after the film cartridge is loaded in the cartridge chamber. Film cartridge loading device. 4. The releasing means is means for moving the insertion blocking means in a direction of retreating from the abutting position of the film cartridge in conjunction with the closing operation of the cartridge chamber lid. 3. The film cartridge loading device according to item 3. 5. A camera equipped with the film cartridge loading device according to claim 1, 2, 3 or 4.