JPH08110554A - Camera - Google Patents

Abstract

PURPOSE: To provide a camera capable of closing a cover member after a film is completely rewound in a film cartridge up to the top end of the film. CONSTITUTION: The camera using the film cartridge 2 which can let an incorporated film out by the unidirectional rotation of a spool and is provided with a light shielding cover capable of opening/closing the exit of the film is provided with a cover coupler 31 switched between first and second states where the light shielding cover is opened and closed, an interlocking lever 34 integrally turned with the cover coupler 31, a locking lever 36 capable of restraining the cover coupler 31 in the first state by the locking of the interlocking lever 34 or releasing its locking and a history gear 35 capable of obtaining a state corresponding to the number of the frames of the film, linked with a film feeding mechanism 10 and when the history gear 35 is in a fixed position, the locking lever 36 restrains the cover coupler 31 in the first state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more particularly to a camera that uses a film cartridge of the type that opens a lid member and sends out a built-in film to the outside.

[0002]

2. Description of the Related Art Conventionally widely used JIS1
In the 35-inch film, the film outlet of the film cartridge is shielded from light by a teremp. However, such a structure may not provide sufficient light-shielding property or may damage the film. 5,
No. 296,886, etc., a film patrone of a type that provides a light-shielding property by providing a film lid with an openable and closable lid at the film outlet to completely store the film inside the film patrone and then closing the lid Has been done.

Japanese Patent Laid-Open Publication No. 1-191837 proposes a mechanism for closing the lid immediately after the rewinding of the film by using a film cartridge having an openable / closable lid at the film outlet. There is.

[0004]

However, as described in the above-mentioned US Pat. No. 5,296,886,
In a camera that uses a film cartridge with a lid that can be opened and closed at the film exit, it is necessary to completely rewind the film into the film cartridge and then close the lid before taking the film cartridge out of the camera. If neglected, the film may be exposed and the captured image may be lost.

In order to prevent this, the above-mentioned Japanese Patent Laid-Open No. 1-191.
In Japanese Patent No. 837, the lid is closed immediately after the film rewinding is completed. However, in the configuration described in the publication, the switch for detecting the presence or absence of the leading end of the film determines the end of the film rewinding. Therefore, when the leading end of the film is not completely rewound into the film cartridge, it may be judged that the rewinding is completed and the operation of closing the lid may be started. In this case, the lid may pinch the tip of the film and cannot be closed properly, which may damage the film, and when the film cartridge is taken out, light enters from the outside, There is a possibility that the film contained in the film cartridge will be exposed.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a camera capable of closing the lid member after the film is completely rewound into the film cartridge until the end thereof. There is.

[0007]

In order to achieve the above-mentioned object, the camera according to the present invention is capable of sending out a built-in film to the outside by rotating the spool in one direction. In a camera using a film cartridge having a lid member for opening and closing a passage through which a lid passes, a lid opening / closing mechanism movable between a first position for opening the lid member and a second position for closing the lid member. And a lock means capable of restraining the lid opening / closing mechanism at the first position or releasing the restraint, and the operation of the film feeding means or the film fed by the film feeding means to load a film cartridge. And a feeding history mechanism that exhibits a state corresponding to the amount of actuation after the time when the locking hand is turned on when the feeding history mechanism is in a predetermined state. There is to restrain the cover opening and closing mechanism in the first position.

Further, in the camera according to the present invention, the feeding history mechanism is a frame number counter which is interlocked with the film feeding operation.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show a first embodiment of the present invention, and FIG. 1 is a perspective view showing the camera from the bottom side.

A cartridge chamber 3 for accommodating a film cartridge 2 is provided on the left side of the bottom of the camera body 1. The opening of the cartridge chamber 3 is closed by a patrone chamber door 4 which can be opened and closed. It is supposed to be covered.

A hook knob 45 for opening and closing the patrone chamber door 4 is provided on the left side surface of the camera body 1.

FIG. 2 is a perspective view showing a part of the film loading control mechanism as seen from the direction of arrow A in FIG. In FIG. 2, the exterior of the camera, the structure of the camera body, and the like are omitted for the sake of simplicity.

The illustrated film cartridge 2 is housed inside by rotating the spool 2a in one direction (counterclockwise in FIG. 2) as described in US Pat. No. 5,296,886. It is possible to send out a film.

The film cartridge 2 is further provided with a light-shielding lid (not shown) that opens and closes the film passage, and the light-shielding lid as a lid member rotates the coupler 2b of the film cartridge 2 counterclockwise in FIG. It is configured to be opened by, and conversely be closed by rotating in the clockwise direction.

The film feeding mechanism 10, which is the film feeding means in this embodiment, is based on the mechanism described in the first embodiment of Japanese Patent Laid-Open No. 2-67534.

That is, the pinion gear 12 is attached to the drive shaft of the motor 11 as a drive source so as to rotate integrally.
Engages with the take-up gear 14 via the two-stage gear 13, and the take-up gear 14 is attached to the take-up spool 16 via the slip clutch 15. Rollers 17 and 18 are provided near the peripheral surface of the take-up spool 16 to prevent the film from floating.

The motor 11 further includes a two-stage gear 19
The sun gear 21 is integrally attached to the rotation shaft of the gear 20 through the gear.

The sun gear 21 meshes with a planet gear 22, and the sun gear 21 and the planet gear 22 are connected via a planet lever 23.

A gear 24 is disposed at a position where the planetary gear 22 can mesh on the revolution orbit, and a rewinding gear 26 is attached to the gear 24 via a one-way clutch 25.

A spool engaging portion 30 having a key capable of engaging with the spool 2a of the film cartridge 2 is fixedly mounted on the rotary shaft of the rewinding gear 26, while the rewinding gear 26 is , Is in mesh with the two-stage gear 27 via the gear 28. The two-stage gear 27 is the planetary gear 2 described above.
It is arranged so as to be able to mesh with each other on two revolution orbits.

A lid coupler 31 serving as a lid opening / closing mechanism is engaged with the coupler 2b of the film cartridge 2, and the lid coupler 31 includes a coupler portion 31a having a key engageable with the coupler 2b and a lever. The part 31c and the shaft part 31
It is formed by combining with b. And this lid coupler 3
1 has a pin 31d protruding upward from one end of the lever portion 31c, and a toggle spring 33 hooked between the pin 31d and a spring hook 32 fixed to the camera body 1 When the lid coupler 31 is rotated clockwise in FIG. 2, it is urged to close the light shielding lid, and conversely, when it is rotated counterclockwise, it is urged to open the light shielding lid. It is configured to perform a so-called snap action operation.

An interlocking lever 34 is provided in the vicinity of the upper portion of the lid coupler 31, and the interlocking lever 34 has two fork-shaped projections 34a and 34b sandwiching the pin 31d of the lid coupler 31 and the projection 34a. , 34b, a locking protrusion 34c that is locked by a lock lever 36, which will be described later, and an engaging portion 34d that is further engaged with a hook lever 41, which will be described later. The shaft 34f is provided so as to be the same rotation shaft as the shaft portion 31b of the lid coupler 31, that is, the interlocking lever 34 and the lid coupler 31 rotate integrally. It has become.

The rotating shaft of the gear 20 extends upward, and a one-tooth gear 21a is provided at the upper end of the rotating shaft. The one-tooth gear 21a meshes with the history gear 35 which is a feeding history mechanism, and constitutes a so-called Geneva mechanism.

That is, the history gear 35 advances one tooth in the clockwise direction in FIG. 2 each time the gear 20 makes one rotation in the counterclockwise direction in FIG. 2 during film feeding, and conversely, in film rewinding, Each time the gear 20 makes one rotation in the clockwise direction in FIG. 2, it is configured to advance one tooth in the counterclockwise direction in FIG.

The history gear 35 has a delivery blocking portion 35b projecting downward. The delivery blocking portion 35b projects upward from the planet lever 23.
It can come into contact with a.

The feed-out preventing portion 35b is provided with the planetary lever 2 in steps S6 to S9 of FIG. 6 which will be described later.
The pin 23a on the No. 3 is the code 2 from the position 23a '
It is adapted to prevent movement to the position shown in 3a.

The pin 23a on the planet lever 23 is
When the planetary gear 22 is in mesh with the gear 24, FIG.
When the planetary gear 22 is meshed with the two-stage gear 27, on the contrary, the planetary gear 22 is in the position indicated by reference numeral 23a 'in FIG.

A pin 35a is provided so as to project upward from the peripheral edge of the upper end surface of the history gear 35.
Reference numeral 5a is for engaging with a lock lever 36 as a locking means.

The lock lever 36 is provided so as to be rotatable around a shaft 36a, and is pulled between a pin 36b projecting from the upper end surface thereof and a spring hook 37 fixed to the camera body 1. By installing the spring 38, it is urged counterclockwise in FIG.

The lock lever 36 extends an arm portion 36c, and the arm portion 36c is normally configured to abut a stopper pin 39 fixedly mounted on the camera body 1.

In such a state, the locking portion 36d of the lock lever 36 is engaged with the locking portion 34 of the interlocking lever 34.
2 and the rotation of the interlocking lever 34 in the clockwise direction in FIG. 2, that is, the movement to close the light-shielding lid of the film cartridge 2 via the lid coupler 31 and the coupler 2b,
It is configured to block.

The arm portion 36c of the lock lever 36 is also
Is arranged so as to intersect the locus of the pin 35a on the provenance gear 35, and is pushed when the pin 35a returns in the final region of the film rewinding process. There is.

That is, when the rewinding of the film is completed, the lock lever 36 is rotated clockwise in FIG. 2 by the pin 35a of the history gear 35, whereby the locking portion 36d locks the interlocking lever 34. Is configured to release.

Next, the description will be continued with reference to FIG. FIG. 3 is a perspective view showing another part of the film loading control mechanism, and shows a locking mechanism which is not shown in order to avoid complication in FIG.

The patrone chamber door 4 is rotatably provided around a support shaft 40 provided in the camera body 1, and a hook 4a is provided at an end opposite to the support shaft 40. From this hook 4a, a lock release projection 4b is provided so as to project upward.

The hook 4a is adapted to engage with a hook 41c provided at the lower end of the hook lever 41.

The hook lever 41 has a hole 41 at the center thereof.
The support shaft 42 fixed to the camera body 1 is provided with f.
Is configured to be rotatable about the support shaft 42 by inserting the pin 41b which is planted in the upper arm 41a and the spring hook 43a which is fixed to the camera body 1. A tension spring 43 is applied between them to urge them clockwise in FIG.

The hook lever 41 normally contacts the stopper pin 44 on the camera body 1 by the urging force of the tension spring 43, and in this state, the hook 4
1c and the hook 4a of the patrone chamber door 4 are engaged with each other.

The hook lever 41 has a protrusion 41d protruding near the upper portion of the hook 41c, and an engaging protrusion 41e engaging with the engaging portion 34d of the interlocking lever 34 from the upper end thereof. are doing.

As a result, when the hook lever 41 rotates clockwise in FIG. 3, the interlocking lever 34 interlocks with this.
Rotate counterclockwise in FIG. 3, and conversely the hook lever 41 moves to the position shown in FIG.
When it rotates in the counterclockwise direction, the interlocking lever 34 rotates in the clockwise direction in FIG. 3 in conjunction with this.

A hook knob 45 is rotatably attached to the support shaft 42 of the hook lever 41, and the turning range of the hook knob 45 is stopper pins 46, 4 projecting from the camera body 1.
It is regulated by 7.

A torsion spring 48 is wound around the support shaft 42, one arm 48a biases the pin 41b of the hook lever 41 counterclockwise in FIG. 3, and the other arm 48b.
Urges the pin 45a planted at the end of the hook knob 45 in the clockwise direction in FIG.

Thus, the hook knob 45 is biased clockwise in FIG. 3 and normally abuts on the stopper pin 46.

A hook locking lever 49 is provided near the protrusion 41d of the hook lever 41. The hook locking lever 49 is rotatably supported around a support shaft 50 fixed to the camera body 1, and is fixed to the spring hooking portion 49a protruding from one side and the camera body 1. By tensioning the tension spring 52 between the boss 51 and the boss 51, it is urged clockwise in FIG.

If the hook locking lever 49 is not blocked by the patrone chamber door 4 or the hook lever 41,
The urging force of the tension spring 52 causes the arm portion 49b to move to the boss 51.
And in this state, the locking pin 49c protruding from the end of the locking lever 49,
The projection 41d of the hook lever 41 is locked to prevent the hook lever 41 from rotating clockwise in FIG.

The patrone chamber door 4 is closed and the hook lever 41 is closed.
When the hook 41c of the hook and the hook 4a of the patrone chamber door 4 are engaged, as shown in FIG. 3, the locking pin 49c of the hook locking lever 49 releases the locking of the hook lever 41, A lock release projection 4b on the tip side of the hook 4a of the cartridge chamber door 4 prevents the hook lock lever 49 from rotating clockwise in FIG.

Switch protrusion 34e of the interlocking lever 34
Switch 53 is provided at a position where
The switch 53 is a leaf switch in which a conductive first contact piece 53a and a second contact piece 53b are connected by an insulating fixing member.

This switch 53 is usually the first contact piece 53.
Although a and the second contact piece 53b are in contact with each other and are in the ON state, when the interlocking lever 34 rotates clockwise in FIG. 3, the switch projection 34e pushes the first contact piece 53a to move the second contact piece 53b to the second position. The contact with the contact piece 53b is cut off, and the contact piece 53b is turned off.

The operation of the first embodiment will be described with reference to the timing chart shown in FIG. FIG.
FIG. 5 is a perspective view showing the film loading control mechanism immediately after the film cassette door 2 is opened and the film cartridge 2 in the state where the unexposed film is completely stored is stored in the film chamber 3. It corresponds to FIGS. 2 and 3.

The state shown in FIGS. 4 and 5 corresponds to step S0 in FIG. When the patrone chamber door 4 starts to be closed from this state (step S1), the locking release projection 4b contacts the hook locking lever 49, and the hook locking lever 49 starts rotating counterclockwise in FIG. (Step S
2).

Then, the hook lever 4 by the locking pin 49c
At the same time when the locking of No. 1 is released, the hook lever 41 starts to rotate clockwise in FIG. 5 by the urging force of the tension spring 43,
In association with this, the hook knob 45 also starts to rotate in the same direction (step S3), but subsequently, the hook 4a of the patrone chamber door 4 comes into contact with the hook 41c of the hook lever 41 and pushes it. The hook lever 41 starts to rotate counterclockwise in FIG. 5 again against the biasing force of the tension spring 43, and in conjunction with this, the hook knob 45 also starts rotating counterclockwise in FIG. 5 (step S4).

Further, when the patrone chamber door 4 is pushed in the closing direction, the hook 4a starts to ride on the hook 41c, whereby the hook lever 41 and the hook knob 45 start to rotate clockwise in FIG. And the Patrone room door 4
As shown in FIG. 3, it is locked, that is, in a closed state (steps S5 to S8).

Before step S6, the lid coupler 31 was urged in the clockwise direction in FIG. 5 by the toggle spring 33, that is, in the direction of closing the light-shielding lid of the film cartridge 2, but the steps S5 to S8 are performed. In the process of, the interlocking lever 34 moves according to the movement of the hook lever 41.
Rotates in the counterclockwise direction in FIG. 5 in conjunction with the rotation in the counterclockwise direction.

The lid coupler 31 is connected to the interlocking lever 3
After 4 has passed the dead point of the toggle spring 33, the biasing direction of the toggle spring 33 is reversed, so that the toggle spring 33 is biased counterclockwise in FIG. 5, that is, the light-shielding lid of the film cartridge 2 is opened. Then, the light shielding lid of the film cartridge 2 is finally opened.

The following are examples of modifications of this embodiment. That is, when the hooking lever 41 is unlocked by the locking pin 49c, the hook 4a has already been released.
The hook 41c is over the riding timing of the slope, and the tension spring 43, which is an elastic member, causes the hook lever 41 to rotate clockwise in the drawing to engage and lock the locking portion 41g and the locking portion 4c. You may comprise. As a result, the light-shielding lid of the cartridge is opened as in the above embodiment.

From the step S0, the switch protrusion 34e
The switch 53, which has been pushed to the off state and turned off, shifts to the on state by the rotation of the interlocking lever 34 as described above (step S7).

At this time, the motor 11 starts forward rotation, that is, counterclockwise rotation in FIG. 2 via a control circuit (not shown) (step S7).

As a result, the planetary lever 23 tries to rotate in the counterclockwise direction in FIG. 4, but the movement of the pin 23a is obstructed by the feed-out preventing portion 35b of the history gear 35 and remains at the intermediate position (step S7). .

The history gear 35 is in the initial position before step S7, that is, in the state shown in FIG. 4, and the lock lever 36 is retracted by the pin 35a thereof against the urging force of the tension spring 38. The one tooth gear 21a is the first
The teeth 35c were meshed, but each time the motor 11 rotates in the normal direction and the gear 20 makes one rotation, the one-tooth gear 21a starts feeding one tooth at a time.

In the engaging portion 34c of the interlocking lever 34, the hook 41c of the hook lever 41 is the hook 4a of the patrone chamber door 4.
At the time of engagement with (step S8), the state shown in FIG.
That is, since the lock lever 36 can be locked, the pin 35a of the history gear 35 is retracted from the lock lever 36 (step S9).
The locking portion 36d of the lock lever 36 starts to lock the locking portion 34c of the interlocking lever 34. That is, the open restraint of the light shielding lid of the film cartridge 2 and the lock restraint of the cartridge chamber door 4 are simultaneously started (step S10).

Then, by rotating the provenance gear 35, the delivery blocking portion 35b retracts from the pin 23a,
The planetary lever 23 restarts the counterclockwise rotation in FIG. 2, which has been interrupted, and therefore the planetary gear 22 meshes with the gear 24, and the feeding of the film from the film cartridge 2 is started (step S11).

After that, the locking portion 36d of the lock lever 36 moves to a position where the locking portion 34c of the interlocking lever 34 is completely locked and the lid coupler 31 is locked (step S1).
2) Subsequently, film feeding is carried out, each frame is photographed, and when the photographing of the last frame is completed, the motor 11 is stopped and the control circuit waits for a rewind start signal (step S13).

In the timing chart of FIG. 6, the interruption of the motor operation for each frame due to photographing or the like is omitted.

When the rewinding start signal is output from the control circuit, the motor 11 starts rotating in the reverse direction, that is, starts rotating clockwise in FIG. 2 (step S14). As a result, the planetary lever 23 rotates clockwise in FIG. 2 to move the planetary gear 22.
Meshes with the two-stage gear 27. As a result, the driving force is transmitted from the two-stage gear 27 to the spool 2a via the spool engaging portion 30, that is, the film rewinding is started.

In this embodiment, since the slip clutch 15 is provided between the winding gear 14 and the winding spool 16,
When the film is rewound, tension is applied to the film by the take-up spool 16, and the provenance gear 35 returns a number of teeth that substantially matches the number of teeth advanced during film winding (step S15).

Therefore, the film is a film cartridge 2
After the time when it is completely rewound into the lock lever 3 (step S16), the pin 35a on the history gear 35 is locked by the lock lever 3.
6 is returned to the position where it is pushed back against the biasing force of the tension spring 38 (step S17).

As a result, the lock between the lock lever 36 and the interlocking lever 34 is released. That is, step S10
The restraint of opening the light-shielding lid of the film cartridge 2 and the restraint of locking the door 4 of the cartridge chamber, which have continued since then, are simultaneously ended (step S17).

After this, the history gear 35 continues to be the first one.
The tooth 35c returns to a position where it meshes with the one-tooth gear 21a, and thereafter, the one-tooth gear continues idling due to being blocked by the projection 35d of the history gear 35 (step S18).

The motor 11 continues to rotate in the reverse direction, and when the patrone used display provided directly connected to the spool 2a of the film patrone 2 coincides with the position indicating the used, a signal from a patrone used detecting means (not shown). The control means receives the signal and stops the motor 11 (step S19).

After that, when the user rotates the hook knob 45 in the counterclockwise direction in FIG. 5 to take out the film cartridge 2 having been photographed (step S20), the lock lever 3
Since the constraint of the interlocking lever 34 by 6 is released in step S17, the hook lever 41 can rotate counterclockwise in FIG. 5, and the interlocking lever 34 can rotate clockwise in FIG.

As a result, the protrusion 34a of the interlocking lever 34 rotates the lid coupler 31 in the clockwise direction in FIG.
After the dead point of 3 is exceeded, the biasing direction of the toggle spring 33 is reversed and biased in the clockwise direction, that is, in the direction of closing the light shielding lid of the film cartridge 2. At this time, the switch projection 34e of the interlocking lever 34 pushes the switch 53 to turn it off (step S2).
1).

In this way, the light-shielding lid of the film cartridge 2 is closed. However, since the film is completely rewound into the film cartridge 2 at the time of step S16 before this, the light-shielding lid is closed without sandwiching the film. (Step S22).

When the hook knob 45 is further rotated, the hook 41c of the hook lever 41 and the hook 4 of the patrone chamber door 4 are moved.
The engagement of a is disengaged, and the patrone chamber door 4 is opened by the urging force of the urging means (not shown) (step S2).
3).

At this time, since the light-shielding lid is closed in step S22, there is no concern that light from the outside will leak into the film cartridge 2.

When the patrone chamber door 4 is opened, the locking release projection 4b is retracted from the hook locking lever 49, so that the hook lever 4
1 is again locked by the locking pin 49c of the hook locking lever 49 (step S23).

Subsequent steps S24 to S2
6 indicates that the hook knob 45 and the hook lever 41 return to their original state when the user releases the finger.

According to the first embodiment as described above, when the provenance gear is in the predetermined position, the lock lever holds the light-shielding lid of the film cartridge in the open state via the lid coupler, so that the film is completely filmed. The light-shielding lid of the film cartridge cannot be closed without being rewound into the cartridge.

Therefore, it is possible to prevent the film from being damaged or being exposed to light due to the fact that the film cannot be completely closed by sandwiching the film with the light shielding lid of the film cartridge.

The lid coupler is interlocked with the hook lever of the patrone chamber door, and the hook lever is engaged with and disengaged from the lock lever to open the patrone chamber door only under the condition that the light shielding lid of the film patrone is closed. Will be able to.

Further, by being equipped with a history gear capable of exhibiting a state corresponding to the operation amount after the film is loaded, it is driven by the film by interlocking with both the patrolness pool drive mechanism and the film winding mechanism. The lock lever can accurately hold the light-shielding lid of the film cartridge in the open state through the lid coupler just before the end of the rewinding in which no movement is obtained.

Further, by preventing the film feeding operation until the lid member of the film cartridge is opened, the damage of the camera and the film can be prevented.

7 and 8 show the second embodiment of the present invention, and FIG. 7 is a perspective view showing a part of the film loading control mechanism. In the second embodiment, description of the same parts as those of the first embodiment described above will be omitted, and mainly different points will be described.

In the second embodiment, the provenance gear 35 in the first embodiment is replaced with a piece counter 60, and the upper surface of the piece counter 60 is engaged with the arm portion 36c of the lock lever 36. A pin 60a for protruding is provided.

A one-tooth gear 61 is meshed with the frame number meter 60. The one-tooth gear 61 is driven by the film to be fed, and each time one frame of the film is fed, the one-tooth gear 61 in FIG. It is designed to rotate once counterclockwise.

As a result, the one-tooth gear 61 makes one revolution every time one film is fed, and the frame number counter 60 advances one tooth in the clockwise direction in FIG. 7, which is a so-called Geneva mechanism. I am configuring.

On the contrary, when the film is rewound, the one tooth gear 21a is driven by the film, and
Each time the frame is rewound, it makes one rotation in the clockwise direction in FIG. 7, and the frame number counter 60 is configured to return one tooth in the counterclockwise direction in FIG.

In the second embodiment, the structure from the patrone chamber door 4 to the hook lever 41 and the interlocking lever 34 is as follows.
The configuration is the same as that shown in FIGS. 3 and 4 in the first embodiment.

The operation of the second embodiment will be described with reference to the timing chart of FIG.

Similar to the above-described first embodiment, the step S0 is performed immediately after the patrone chamber door 4 is opened and the film patrone 2 with the unexposed film completely accommodated is accommodated in the patrone chamber. And after that,
Basically, the process proceeds in the same manner as the above-mentioned first embodiment.

However, in the second embodiment, the above-mentioned first
Since the motor, the planetary gear, etc., which are the constituent elements in the embodiment, are not necessary constituent elements, the feeding prevention in steps S7 to S10 is omitted, and step S19 is also omitted.

In this embodiment, the film feeding is performed in order to lock the light blocking lid of the film cartridge 2 and lock the cartridge chamber door 4 in conjunction with the frame counter 60 driven by the fed film. After the start of feeding, the film is not accidentally closed to damage the film, and it is possible to prevent the film from exposing the film by accidentally opening the cartridge chamber door 4.

Further, at the time of rewinding, the above-mentioned open restraint and lock restraint are released by interlocking with the frame number counter 60 driven by the film to be rewound. Close it to damage the film,
It is possible to prevent the film from being exposed by accidentally opening the patrone chamber door 4.

In this embodiment, the one tooth gear 61 is used.
The film is driven by the film to make one rotation each time one film is fed. However, the one-tooth gear that is interlocked with the spool engaging portion 30 or the rewinding gear 26 that drives the spool engaging portion 30 is almost the same. The action can be obtained.

According to the second embodiment as described above, the same effect as that of the first embodiment can be obtained, and by using the frame counter linked with the feeding of the film as the feeding history mechanism, The structure is further simplified, the number of parts is reduced, and the cost can be reduced.

FIG. 9 shows a third embodiment of the present invention and is a perspective view showing a part of the film loading control mechanism. In the third embodiment, description of the same parts as those of the second embodiment will be omitted, and only different points will be mainly described.

The third embodiment is formed by fixing the interlocking lever 34 in the second embodiment to the film lid opening / closing knob 70 which is an external operating member. In the second embodiment, the hook is provided. While the lever 41 and the interlocking lever 34 are engaged and interlocked with each other, the engagement is discontinued in the present embodiment.

That is, the film lid opening / closing knob 70 is fixed to the upper end portion of the shaft 34f of the interlocking lever 34 so as to rotate integrally, and the rotation range thereof is the pin 71a and the pin 71b projecting from the camera body. Is regulated by.

Next, the operation of the third embodiment is almost the same as the operation of the above-described second embodiment, except for the following points.

In the above-described second embodiment, the lock restraint of the patrone chamber door 4 is interlocked with the open restraint of the light-shielding lid of the film cartridge 2 in steps S10 to S17, but in this embodiment, this step is performed. In steps S10 to S17, the light-shielding lid of the film cartridge 2 is restrained from being opened, but it is not interlocked with the door 4 of the cartridge chamber.

According to the third embodiment, the same effect as that of the second embodiment can be obtained, and the light-shielding lid of the film cartridge is interlocked with the frame counter driven by the fed film. The open constraint is applied, and when rewinding, the above open constraint is released in conjunction with the frame counter that follows the film to be rewound, so after the start of film feeding and before the end of film rewinding. Is
It is possible to prevent the film from being damaged by accidentally closing the light shielding lid of the film cartridge.

[Additional Notes] According to the above-described embodiment of the present invention as described in detail above, the following constitution can be obtained.

(1) A camera using a film cartridge having a lid member capable of sending out a built-in film to the outside by rotating the spool in one direction and opening and closing a passage through which the film passes,
A lid opening / closing mechanism movable between a first position for opening the lid member and a second position for closing the lid member, and restraining the lid opening / closing mechanism at the first position or restraining the restraint. A feeding history mechanism that is interlocked with the releasable lock means and the operation of the film feeding means or the film fed by the film feeding means, and exhibits a state according to the operation amount after the time when the film cartridge is loaded. And a lock mechanism that restrains the lid opening / closing mechanism at the first position when the feeding history mechanism is in a predetermined state.

(2) Furthermore, in Supplementary Note 1, a cartridge storage chamber for storing the film cartridge, an opening position for opening the part of the cartridge storage chamber so that the film cartridge can be inserted and removed, and the cartridge storage A cartridge storage chamber cover that is movable between a closed position that closes the chamber to keep a light-shielded state, a first position that locks the cartridge storage chamber cover to the closed position, and a second position that releases the lock. And a lock mechanism movable between the second position and the first position when the lock mechanism moves from the second position to the first position. It is configured to move to the first position, and the lock means is configured to restrain the lock mechanism at the first position or release the restraint.

(3) In Supplementary Note 1, the feeding history mechanism is a frame number counter that interlocks with the feeding operation of the film.

(4) Further, in Supplementary Note 1, the operation of engaging the spool of the film cartridge and rotating the spool in one direction to feed the film out of the film cartridge, and rotating the spool in the opposite direction. The film supply mechanism comprises a spool drive mechanism for rewinding the film in the film cartridge, and a film winding mechanism for winding the film sent out from the film cartridge by a take-up spool. ,
The spool drive mechanism and the film winding mechanism are interlocked with each other.

(5) In Appendix 1, when the feeding history mechanism is in a predetermined state, the film feeding operation is blocked.

(6) By rotating the spool in one direction, the built-in film can be sent to the outside, and the lid member for opening and closing the passage through which the film passes and the spool driven on the same end face. In a camera using a film cartridge having a spool engaging portion for transmitting a force and a lid member engaging portion for transmitting a driving force to the lid member, a cartridge storage chamber for storing the film cartridge, An opening provided in the cartridge storage chamber and a door member that covers the opening so as to be openable and closable are provided. When the film cartridge is stored in the cartridge storage chamber, the lid member engaging portion is A lid configured so that the provided surface faces a back surface of the cartridge storage chamber, and the back surface engages with the lid member engaging portion to open and close the lid member. A camera comprising an opening / closing mechanism, and an interlocking mechanism that links the lid opening / closing mechanism with a mechanism for locking the door member.

[0108]

As described above, according to the camera of the present invention, the lid member can be closed after the film is completely rewound into the film cartridge until the end thereof.

[Brief description of drawings]

FIG. 1 is a perspective view showing a camera of a first embodiment of the present invention from the bottom side.

FIG. 2 is a perspective view showing a part of the film loading control mechanism of the first embodiment from the direction of arrow A in FIG.

FIG. 3 is a perspective view showing another part of the film loading control mechanism of the first embodiment.

FIG. 4 is a perspective view corresponding to FIG. 2 showing a state of a film loading control mechanism immediately after a film cartridge is housed in a cartridge chamber of the camera of the first embodiment.

FIG. 5 is a perspective view corresponding to FIG. 3 showing the state of the film loading control mechanism immediately after the film cartridge is housed in the cartridge chamber of the camera of the first embodiment.

FIG. 6 is a timing chart showing the operation of the camera of the first embodiment.

FIG. 7 is a perspective view showing a part of a film loading control mechanism according to a second embodiment of the present invention.

FIG. 8 is a timing chart showing the operation of the camera of the second embodiment.

FIG. 9 is a perspective view showing a part of a film loading control mechanism of a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Camera main body 2 ... Film cartridge 2a ... Spool 2b ... Coupler 3 ... Patrone chamber 4 ... Patrone chamber door 10 ... Film feeding mechanism (film feeding means) 21a, 61 ... One tooth gear 31 ... Lid coupler (lid opening / closing mechanism) ) 34 ... Interlocking lever 35 ... History gear (feeding history mechanism) 36 ... Lock lever (locking means) 41 ... Hook lever 45 ... Hook knob 49 ... Hook locking lever 60 ... Frame counter 70 ... Film lid opening / closing knob

Claims (2)

[Claims] 1. A camera using a film cartridge having a lid member for opening and closing a passage through which the film can be sent out by rotating the spool in one direction. A lid opening / closing mechanism movable between a first position in which the lid member is in an open state and a second position in which the lid member is in a closed state, and the lid opening / closing mechanism is restrained at the first position or released from the restraint. A lockable means, and a feeding history mechanism that interlocks with the operation of the film feeding means or the film fed by the film feeding means, and exhibits a state according to the operation amount after the time when the film cartridge is loaded. , And the locking means restrains the lid opening / closing mechanism at the first position when the feeding history mechanism is in a predetermined state. . 2. The feeding history mechanism is a frame number counter which is interlocked with the feeding operation of the film.
The camera described in.