JPH11184005A - Camera and cartridge chamber device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an erroneous 'film using state mark' from being set by holding it to a position prohibiting an open of a cartridge chamber cap until a mark showing a film using state is set. SOLUTION: In the state in which a film is rewound no a cartridge 1, and re-winding rotation is continued for setting the 'film using state mark,' since the film isn't out from the cartridge 1, though a detection lever 10 is wind-up rotated by a first spring 11, when it is minutely rotated, since a notched part 8-a of a hold lever 8 is engaged with the hold projection 10-c of the detection lever 10, it continues than state. That is, though the film isn't out from the cartridge 1, the detection lever 10 is in a positional relation equal to the state that the film is out from the cartridge 1, and opening operation of an open/close knob 13 is controlled, and the erroneous opening of the cartridge room cap 12 is prohibited. Thus, the setting operation of the 'film using state mark' is performed safely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera capable of using a film cartridge provided with an index indicating a use state of a film, and a cartridge chamber apparatus in which such a film cartridge is loaded.

[0002]

2. Description of the Related Art In a camera, if a lid of a cartridge chamber in which a film cartridge is loaded is accidentally opened during photographing, the film which has been photographed up to that point is exposed and becomes useless. Many mechanisms have been proposed for preventing the lid of the cartridge chamber from being opened halfway.

For example, JP-A-6-214294, JP-A-7-5621
9. In the mechanism proposed in Japanese Patent Application Laid-Open No. 8-240846, etc., a film detection lever is provided which is moved by the film coming out of the film cartridge. When the cartridge is out of the cartridge, the film detection lever is opened to inhibit the operation of the knob. When the film is wound into the cartridge, the opening knob can be operated, and the lid of the cartridge chamber can be opened. Thus, it is possible to prevent an accident that the lid of the cartridge chamber is accidentally opened during photographing and the film is spoiled.

[0004]

However, in a camera recently using a film cartridge provided with an index indicating the use state of the film as to which frame the film has been exposed to, the film is newly proposed in recent years. After being rewound into the cartridge, it is necessary to set a “film use state mark” provided on the bottom surface of the cartridge and indicating the film use state. This "film use state mark" rotates integrally with the film take-up spool in the cartridge. Normally, after the completion of rewinding, the rewind rotation is continued and the "film use state mark" is set. However, if the lid of the cartridge chamber is accidentally opened during this set rotation,
This set rotation is interrupted halfway, resulting in a cartridge on which an incorrect “film use state mark” is set.

As a result, a film cartridge which has been exposed to all frames becomes a film cartridge in which an unexposed "film use state mark" is set,
A film cartridge which has been partially exposed is a film cartridge in which a "film use state mark" which has been exposed to all frames is set.

In other words, with the mechanism using only a detection lever for detecting that the film has come out of the cartridge as in the prior art, erroneous opening of the cartridge chamber lid during photographing can be prohibited. There was a problem that it was not possible to prohibit erroneous opening of the cartridge chamber lid during setting.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cartridge chamber in which a cartridge is loaded at least until the setting of an index indicating the film use state of the film cartridge is completed after the film coming out of the film cartridge is rewound into the film cartridge. It is an object of the present invention to provide a camera and a cartridge chamber device that can prevent the lid from being opened.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a rotating section for accommodating a film and performing a feeding operation of the film by rotation, and the film in conjunction with the rotation of the rotating section. In a camera and a cartridge chamber apparatus capable of using a film cartridge provided with an index indicating a use state of the cartridge chamber, a cartridge chamber for loading a film cartridge, a cartridge chamber lid for opening and closing the cartridge chamber, Lid opening prohibiting means for moving to a position where the opening of the cartridge chamber lid is prohibited by the film, and at least the film coming out of the film cartridge is rewound into the film cartridge by the rotating portion of the film cartridge, and the indicator Until the setting is completed, It is to the camera and the cartridge chamber means and a holding means for holding a position to prohibit the opening of the cartridge chamber lid.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIGS. 1 to 7 are model diagrams conceptually showing main parts of a camera according to a first embodiment of the present invention, and a detailed configuration is omitted. ing. 1 to 7 show different positional relationships and different engagement states of the same configuration.

First, the configuration of each component will be described with reference to FIG. In the present embodiment, the left rotation direction in the drawing is referred to as a “rewind direction”, and the right rotation direction is referred to as a “winding direction”. Reference numeral 1 denotes the above-described film cartridge, which includes a take-up spool for accommodating a film and performing a feeding operation of the film by rotation, and an index indicating a use state of the film in conjunction with rotation of the take-up spool. , Are loaded at the positions of the cartridge chambers indicated by broken lines.
Reference numeral 2 denotes a fork key which engages with a take-up spool in the cartridge 1 and feeds and rewinds the film by a known technique. In a normal camera, the fork key 2 and the fork gear 3 are integrally formed, but in the present embodiment, they are separately provided in terms of function. Specifically, play mechanisms 2-a and 3-a are provided so that the start of rotation of the fork key 2 is delayed with respect to the start of rotation of the fork gear 3, respectively. The fork gear 3 receives the rotational force of the feeding gear 4 to wind up and rewind. The driving force of the feeding gear 4 is transmitted from a feeding motor 5 by a known gear transmission mechanism 6 or the like indicated by a broken line or an arrow in the drawing.

A clutch gear 7 meshes with the fork gear 2. The clutch gear 7 rotatably supports the holding lever 8 coaxially, and a friction mechanism (not shown) is provided therebetween. Therefore, the holding lever 8 performs the rewind rotation in conjunction with the rotation of the clutch gear 7 in the rewind direction, and performs the winding rotation in conjunction with the rotation in the winding direction. However, the first stopper 9 provided on the main body (not shown) is provided. -a and second
The rotation is restricted in each rotation phase by the stopper 9-b. However, since the clutch gear 7 is connected to the holding lever 8 by a friction mechanism, the rotation of the clutch gear 7 is not prevented.

The detection lever 10 is rotatably held with respect to the main body. And both ends are film detector 10
-a and a knob locking portion 10-b. Detection lever 10
When the film F shown in FIG. 4 comes out of the cartridge 1, the film detecting unit 10-a is pushed by the film F and rotates in the rewinding direction, but the film F is stored in the cartridge 1. In the state, the first spring 11 rotates in the winding direction, and the third stopper 9-c restricts the rotation and holds the rotation. Further, the detection lever 10 has a holding projection 10-c, which is in a positional relationship capable of engaging with the notch 8-a of the holding lever 8.

The cartridge chamber lid 12 is a lid for opening and closing the cartridge chamber for accommodating the cartridge 1. In this figure, the opening method and the supporting method are modeled and simplified.

The closing lock of the cartridge chamber lid 12 is performed by an opening / closing knob 13. The opening / closing knob 13 is urged by a second spring 14 in the closing direction. And the detection lever 10
There is an opening restricting projection 13-a which can be engaged with the knob locking portion 10-b of the cartridge chamber lid 12 to restrict the movement of the opening / closing knob 13 in the opening direction by being engaged in a sequence described later. Regulation of opening.

Next, the operation of the above configuration will be described in the order of FIGS. In FIGS. 2 to 7, the reference numerals of the components shown in FIG. 1 are omitted except for special cases.

FIG. 1 shows a state where the cartridge 1 has not been loaded yet. Since the detection lever 10 is rotated in the winding direction by the first spring 11, the opening and closing knob 13 can freely open and close.

FIG. 2 shows a state where the cartridge 1 is loaded in the cartridge chamber of the camera. The cartridge chamber lid 12 is closed, and the opening / closing knob 13 regulates the opening. However, since the detection lever 10 is wound up and rotated, the opening / closing knob 13 can be freely opened and closed. In this state, the fork key 2 is rewound and rotated in order to detect the index of the cartridge of the cartridge 1 by a known technique. In the present embodiment, the feature detection sequence is omitted because it is not directly related. At this time, the holding lever 8 rotates in the winding direction in conjunction with the rotation of the fork gear 3 in the rewinding direction, but the rotation is controlled not by the second stopper 9-b but by the holding projection 10-c of the detection lever 10. Done. Then, after the camera determines that the film of the cartridge 1 is a cartridge in which all frames have been exposed and the photographing is impossible, a predetermined display is performed by a known technique. At this stage, since the opening / closing knob 13 can be freely opened / closed, the camera user can take out the cartridge 1.

FIG. 3 shows that when the feature detection of the cartridge 1 is completed, the film F is sent out from the cartridge 1.
This is a state in which the fork key 2 is wound up and rotated.
This state is almost the same as the state shown in FIG. 2, but the holding lever 8 is rotating backward. Even at this stage, open / close knob
13 can be freely opened and closed.

FIG. 4 shows a state in which the film F has been sent out from the cartridge 1. When the film F comes out of the cartridge 1, the film detecting portion 10 of the detecting lever 10 is moved.
-a is pushed by the film F, and the detection lever 10 rotates in the rewind direction. Then, the knob locking portion 10-b engages with the opening regulating protrusion 13-a of the opening / closing knob 13, and regulates the opening operation of the opening / closing knob 13. This prevents the cartridge chamber lid 12 from being accidentally opened. This state is a normal photographing standby state or a photographing halfway state, and prevents a photographed film from being accidentally exposed.

FIG. 5 shows a state where the photographing is completed and the film F is rewound into the cartridge 1. In this state, the detection lever 10 is rotated in the rewinding direction by the film F. However, unlike the state of FIG. Rotate until rotation is restricted to -b. At this stage, the notch 8-a of the holding lever 8 is
Engage with c.

FIG. 6 shows a state in which the rewinding of the film F to the cartridge 1 is completed and the rewinding rotation is continued to set the "film use state mark". Since the film F does not come out of the cartridge 1, the detection lever
10 is wound up and rotated by the first spring 11, but at the time of the minute rotation, the notch 8-a of the holding lever 8 is moved to the detection lever 1 position.
Since this is engaged with the zero holding projection 10-c, that state is continued. In other words, although the film F does not protrude from the cartridge 1, the detection lever 10 has the same positional relationship as the state where the film F protrudes from the cartridge 1, and regulates the opening operation of the opening / closing knob 13, and the cartridge chamber. Incorrectly opening the lid 12 is prohibited. Therefore, the setting operation of the “film use state mark” is performed safely.

FIG. 7 shows the operation after the setting operation of the "film use state mark" is completed. The setting operation of the "film use state mark" is performed by the rewind rotation of the fork key 2, and after the setting is completed, the fork gear 3 is rotated in the winding direction by a predetermined amount. The predetermined amount is an amount by which the fork key 2 is not rotated by the play mechanisms 2-a and 3-a of the fork key 2 and the fork gear 3 described above. this is,
When the fork key 2 is rotated in conjunction with the winding rotation of the fork gear, the display content of the set “film use state mark” is changed, and the purpose is to prevent such change. When the clutch gear 7 rotates in the rewinding direction in conjunction with the rotation of the fork gear 3 in the rewinding direction, the holding lever 8 also rotates in the rewinding direction at the same time.
Then, the notch 8-a of the holding lever 8 is disengaged from the holding projection 10-c of the detection lever 10, and the detection lever 10 rotates in the winding direction by the spring force of the first spring 11. In this state, the knob locking portion 10-b and the opening regulating protrusion 13 of the opening / closing knob 13 are opened.
Since there is no engagement with -a, the opening / closing knob 13 can be freely opened / closed and the cartridge chamber lid 12 can be opened.

According to the above description, by providing the holding member of the film detecting member while achieving the erroneous opening mechanism of the cartridge chamber lid by using the film detecting member as in the prior art, the "film can be ejected from the cartridge". In addition to the case where the cartridge chamber lid is opened, the cartridge chamber lid can be prevented from being accidentally opened. In other words, there is no erroneous opening of the cartridge chamber lid during the setting of the “film use status mark” other than erroneous exposure due to simple erroneous opening of the cartridge chamber lid. There is no such thing as being done. This also leads to indirect double exposure prevention.

(Second Embodiment) FIGS. 8 to 11 are model diagrams conceptually showing main parts of a camera according to a second embodiment of the present invention, and a detailed configuration is omitted. I have. 8 to 11 show different positional relationships and engagement states of the same part. The difference between this embodiment and the first embodiment is the difference in the method of holding the detection lever. In these drawings, in the present embodiment, the components having the same functions as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

First, the overall configuration will be described with reference to FIG. In the present embodiment, a second detection lever 18 is used instead of the detection lever 10. The second detection lever 18 is provided with a detection spring 16 integrally with the detection lever 10 instead of the film detection unit 10-a that has performed the detection of the film F, and has the function thereof. The detection spring 16 can detect the film F coming out of the film cartridge 1 and has elasticity at the same time, and is slightly elastically deformed in the film detection state. Further, the second detection lever 18 is provided with a plunger described later.
At least the adsorbing portion is made of a magnetic material so that it can be adsorbed and held on 15.

Although the plunger 15 is a normal electromagnet, its attraction force does not need to be large enough to attract a distant magnetic material, and the magnetic material in contact with it can be attracted and held in that state. Any level of ability is fine.

The fork gear 17 is the same as a conventional fork gear, and the key portion and the gear portion are not separate from each other as in the first embodiment but are integrally formed.

Next, the operation of the above configuration will be described with reference to FIGS.

FIG. 8 shows that after the cartridge 1 is loaded into the cartridge chamber of the camera, the film F
From the time it is sent out. In this state, the opening / closing knob 13 can freely open and close, and the cartridge chamber lid 12 can be opened.

FIG. 9 shows a state in which the film F is pushed out from the cartridge 1 by the winding-up rotation, and the second detection lever 18 rotates backward by rotating against the spring force of the first spring 11. In this state, the movement of the opening / closing knob 13 is restricted by the second detection lever 18, and the cartridge chamber lid 12
Is never opened. Here, the rewind rotation of the second detection lever 18 is restricted by abutting on the plunger 15. This is because the plunger 15 has only the suction holding ability. However, the film F is pushed by the rotation restriction, and the film F is directly prevented from being fed.
The detection spring 16 touching is provided with elasticity to constitute an absorbing mechanism. This state represents during photographing and immediately before the film F is completely stored in the cartridge 1 from the start of rewinding. Then, immediately before the rewind operation is started and completed, that is, immediately before the film F does not press the detection spring 16, the suction operation of the plunger 15 (energization ON) is started.

FIG. 10 shows a state in which the film F is wound around the cartridge 1 and then the fork gear 17 continues to rotate in the rewinding direction in order to set a "film use state mark". According to the prior art, at this stage, the second film detection lever 18 is wound up and rotated by the first spring 11, but in this embodiment, the same operation as when the film F comes out of the cartridge 1 by the suction operation of the plunger 15 is performed. I keep the state. Therefore, even in this state, the movement of the opening / closing knob 13 is restricted, and the cartridge chamber lid 12 is not accidentally opened. With this, fork gear for the set of "film use status mark"
17 rewind rotations are safely performed.

FIG. 11 shows the operation after the "film use state mark" setting operation is completed. here,
Upon completion of the setting operation, the suction operation of the plunger 15 is stopped (the power supply is turned off). Thereby, the second detection lever 18
Is rotated by the first spring 11 without being held, and the knob locking portion 18-b and the opening regulating protrusion 13 of the opening / closing knob 13 are held.
Since there is no engagement with -a, the opening / closing knob 13 can be freely opened / closed and the cartridge chamber lid 12 can be opened.

In the state of FIG. 7 of the first embodiment, the holding release of the detection lever 10 is performed by using a predetermined amount of winding rotation of the fork gear 3 without rotating the fork key 2, but in this embodiment. In this case, the operation is performed by releasing the suction of the plunger 15 which is functionally (mechanical sequence) independent (power off), so there is no other functional restriction on the sequence,
Deployment to various cameras is easy.

As described above, in the present embodiment, by using the plunger 15 instead of the clutch gear 7 and the holding lever 8 used in the first embodiment, functions equivalent to those of the first embodiment can be obtained. Can be achieved.

Considering only the opening control of the opening / closing knob 13, a lock member is provided separately for the opening / closing knob 13 regardless of the presence or absence of the film F, and the locking of the opening / closing knob 13 is performed by completely independent suction and release operations of the plunger. However, when the suction-type plunger is used as compared with the suction-holding-type plunger 15 as in the present embodiment, the size and current consumption increase.

(Correspondence between the Invention and the Embodiment) In the above embodiment, the portions indicated by the broken lines in FIG. 1 correspond to the cartridge chamber of the present invention, the cartridge chamber lid 12 corresponds to the cartridge chamber lid of the present invention, and the detection lever. 10 or the second detection lever 18 is the cover opening inhibiting means of the present invention, the holding lever 8 or the plunger 15 is the holding means of the present invention, the fork gear 3 is the driving means of the present invention, and the plunger 15 is the present invention. Each corresponds to the electromagnetic means of the invention.

The above is the correspondence between each configuration of the embodiment and each configuration of the present invention. However, the present invention is not limited to the configuration of the embodiment, and the functions described in the claims or Any configuration that can achieve the functions of the configuration of the embodiment can be applied.

For example, in the above-described embodiment, the holding lever 8 and the plunger 15 act after the film is rewound into the cartridge. The holding lever 8 and the plunger 15 may act before the rewinding.

In addition, the present invention may combine the above-described embodiments or their technical elements as needed.

Further, the present invention may be applied to a case where all or a part of the configuration of the claim or the embodiment forms one device or is combined with another device. , Which may be a constituent element of the device.

The present invention is also applicable to various types of cameras such as a single-lens reflex camera, a lens shutter camera, and a video camera.
Further, the present invention can be applied to optical devices and other devices other than cameras, and further to devices applied to the cameras, optical devices and other devices, or elements constituting these devices.

[0043]

As described above, according to the present invention, at least the film coming out of the film cartridge is rewound into the film cartridge until the setting of the index indicating the film use state of the film cartridge is completed. An object of the present invention is to provide a camera and a cartridge chamber device capable of preventing a lid of a cartridge chamber in which a cartridge is loaded from being opened.

[Brief description of the drawings]

FIG. 1 is a model diagram conceptually showing a main part of a camera according to a first embodiment of the present invention.

FIG. 2 is a model diagram conceptually showing another state of a main part of the camera of FIG. 1;

FIG. 3 is a model diagram conceptually showing another state of a main part of the camera of FIG. 1;

FIG. 4 is a model diagram conceptually showing another state of a main part of the camera of FIG. 1;

FIG. 5 is a model diagram conceptually showing another state of a main part of the camera of FIG. 1;

FIG. 6 is a model diagram conceptually showing another state of the main part of the camera of FIG. 1;

FIG. 7 is a model diagram conceptually showing another state of a main part of the camera of FIG. 1;

FIG. 8 is a model diagram conceptually showing a main part of a camera according to a second embodiment of the present invention.

9 is a model diagram conceptually showing another state of a main part of the camera in FIG.

FIG. 10 is a model diagram conceptually showing another state of the main part of the camera of FIG. 8;

11 is a model diagram conceptually showing another state of the main part of the camera of FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cartridge 2 Fork key 2-a play mechanism 3 Fork gear 3-a play mechanism 4 Feed gear 5 Feed motor 6 Gear transmission mechanism 7 Clutch gear 8 Holding lever 8-a Notch part 9-a First stopper 9- b second stopper 9-c third stopper 10 detection lever 10-a film detection unit 10-b knob engagement unit 10-c holding projection 11 first spring 12 cartridge chamber cover 13 opening / closing knob 13-a opening regulating projection 14th 2 spring F film 15 plunger 16 detection spring 17 fork gear 18 second detection lever

Claims (14)

[Claims] 1. A film cartridge, comprising: a rotating unit for storing a film and feeding the film by rotation, and an index indicating a use state of the film in conjunction with the rotation of the rotating unit. A camera chamber capable of loading a film cartridge, a cartridge chamber lid for opening and closing the cartridge chamber, and a lid opening prohibition for moving the cartridge chamber lid to a position where opening of the cartridge chamber lid is inhibited by film coming out of the film cartridge. Means, and the lid opening prohibiting means prohibits the opening of the cartridge chamber lid until the setting of the index is completed after at least the film coming out of the film cartridge is rewound into the film cartridge by the rotating portion of the film cartridge. And holding means for holding the Features camera. 2. The camera according to claim 1, wherein said lid opening prohibiting means is moved to a position where the opening of said cartridge chamber lid is prohibited by a film sent from the film cartridge by a rotating portion of said film cartridge. 3. A drive means for driving a rotating portion of the film cartridge in a feeding direction for feeding the film from the film cartridge and a rewinding direction for rewinding, and the holding means drives the driving means in the rewinding direction. 3. The camera according to claim 1, wherein the camera moves to a non-operative position in conjunction with the movement of the driving means in the feeding direction. 4. The apparatus according to claim 1, wherein the driving means has a predetermined play section from when the driving in the rewinding direction is switched to the driving in the feeding direction and before the driving section of the film cartridge is actually driven. 6. The camera according to claim 5, wherein 5. The driving means sets an index of the film cartridge by driving in the rewind direction,
The camera according to claim 4, wherein the driving in the sending direction is performed within the predetermined play section. 6. The camera according to claim 1, wherein said holding means holds said lid opening prohibiting means at an operating position by electromagnetic means. 7. The camera according to claim 6, wherein said electromagnetic means is an electromagnetic means having an electromagnetic force enough to hold said lid opening prohibiting means in an operating position. 8. A film cartridge which contains a film and has a rotating portion for feeding the film by rotation and an index indicating a use state of the film in conjunction with the rotation of the rotating portion is used. A camera chamber capable of loading a film cartridge, a cartridge chamber lid for opening and closing the cartridge chamber, and a lid opening prohibition for moving the cartridge chamber lid to a position where opening of the cartridge chamber lid is inhibited by film coming out of the film cartridge. Means, and the lid opening prohibiting means prohibits the opening of the cartridge chamber lid until the setting of the index is completed after at least the film coming out of the film cartridge is rewound into the film cartridge by the rotating portion of the film cartridge. And holding means for holding the Characteristic cartridge chamber device. 9. The cartridge chamber according to claim 1, wherein said lid opening prohibiting means moves to a position where the opening of said cartridge chamber lid is prohibited by a film fed from the film cartridge by a rotating part of said film cartridge. apparatus. And driving means for driving a rotating portion of the film cartridge in a feeding direction for feeding the film from the film cartridge and a rewinding direction for rewinding the film.
The said holding means moves to an operation | movement position in conjunction with the drive of the said drive means in the rewind direction, and moves to a non-operation position in conjunction with the drive of the said drive means in the said sending-out direction. Item 10. The cartridge chamber device according to item 8 or 9. 11. The apparatus according to claim 1, wherein the driving unit has a predetermined play interval from when the driving in the rewinding direction is switched to the driving in the feeding direction and before the driving unit of the film cartridge is actually driven. The cartridge chamber apparatus according to claim 10, wherein 12. The apparatus according to claim 11, wherein the driving unit sets the index of the film cartridge by driving in the rewinding direction, and then drives the feeding direction in the predetermined play section. Cartridge chamber device. 13. The cartridge chamber apparatus according to claim 8, wherein said holding means holds said lid opening prohibiting means at an operating position by electromagnetic means. 14. The camera according to claim 13, wherein the electromagnetic means is an electromagnetic means having an electromagnetic force enough to hold the lid opening prohibiting means in an operation position.