JP3195064B2 - camera - Google Patents

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 film cartridge loading structure for a camera.

[0002]

2. Description of the Related Art Conventionally, as an auto-loading camera for loading a film cartridge with a leader portion into the camera, the film is pulled out to a spool position in order to wind the film around a spool, and a rear cover is shielded to cover the film. It was common to perform an initial winding. However, in this method, the film has to be pulled out to a predetermined position, which is troublesome and anxious for the user. Therefore, cameras proposed to solve the above-mentioned problems include Japanese Patent Application Laid-Open No. 2-114248 and Japanese Patent Application Laid-Open No. 2-195335.
Is disclosed in the official gazette. In this camera, when a patrone is loaded, the film is automatically pulled out and wound on a spool.

[0003]

However, Japanese Patent Application Laid-Open No.
The camera disclosed in JP-A-114248 discloses a camera in which a film cartridge is dropped from the bottom of the camera and loaded. Then, winding, rewinding gear train are arranged in an upper part of the body from the relationship of the arrangement of the drive system.
Therefore, there is an obstacle in arranging various units such as an AF (autofocus) device, a finder and a strobe, and there is a problem that the camera becomes large. Also,
If the gear train is arranged at the lower part of the camera and the patrone lid is arranged at the upper part of the camera in order to solve the above-mentioned problem of this camera, the parting line of the lid is seen from the upper part, and there is a problem in appearance.

On the other hand, a system disclosed in the public information of Japanese Patent Application Laid-Open No. 2-195335 is a system in which a film cartridge is loaded from the side of a camera. In this proposal, means for driving a spool of the film cartridge when rewinding the film is used.・
The configuration has not been disclosed. Assuming a rewinding fork mechanism projecting into the patrone chamber, which is conventionally known, the method of loading straight from the side as in the present proposal cannot be applied.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a camera that can easily and reliably load a film cartridge and that can be miniaturized with an excellent appearance.

[0006]

A first camera according to the present invention comprises: a patrone opening for inserting a film patrone; and a patrone opening for inserting the patrone when the film patrone is inserted.
Or, it is opened at the time of taking out, and a patrone lid that is shielded after inserting the film patrone, provided on the camera body,
Drive means for rewinding the film, rotatably supported by the patrone cover, wherein the drive means cannot be connected when the patrone cover is open, and the drive means when the patrone cover is closed. Yes that transmits the rotation driving force to the winding shaft of the connection has been film cartridge with
A driving force transmitting means, a locking means capable of moving between a locked position for holding the patrone cover in a closed state and a non-locking position enabling opening, and the patrone adapted for movement of the locking means. The lid blocks the patrone opening.
And a clutch means for connecting the driving means and the driving force transmitting means in the locked position when in the closed position, and disengaging the driving means and the driving force transmitting means in the unlocked position. to. Further, the second camera according to the present invention comprises a patrone opening for inserting a film patrone, a patrone cover for opening the patrone opening when the film patrone is inserted or taken out, and closing the patrone cover after the film patrone is inserted. A drive unit provided on the camera body and having a drive gear for rewinding the film; and a rotatably supported pivot on the patrone cover. When the patrone cover is open, the drive unit cannot be connected. A driving gear transmitting means having a driven gear capable of transmitting a rotational driving force to a winding shaft of a film cartridge by being connected to the driving gear of the driving means when the patrone cover is closed; and a non-locking position and movable to a locking means allowing the open and locked position for holding a closing state of the lid, the upper Patrol
During the movement from the open position of the lid to the above-mentioned shielding position
Engages the drive gear with the driven gear
The drive gear is displaceable in the axial direction.
A biasing member for biasing, and clutch means capable of displacing the drive gear in its axial direction at the beginning of the engagement between the drive gear and the driven gear during the movement of the cartridge cover from the open position to the shielding position. And characterized in that: Further, the third camera according to the present invention comprises:
The film cartridge, a cartridge opening inserted in parallel with the winding shaft thereof, and the cartridge opening is rotated with respect to a rotating shaft arranged in parallel with the winding shaft of the cartridge, when inserting the film cartridge, or , A patrone cover that is opened at the time of removal and shields after inserting the film patrone, a drive gear provided on the camera body and rewinding the film, and is rotatably supported by the patrone cover, and is in an open state of the patrone cover. Cannot be connected to the driving means, and when the patrone cover is in a closed state, the rotation axis is connected to the driving gear of the driving means and transmits the rotation driving force to the winding shaft of the film patrone. A driven gear having a locked position for holding the patrone lid in a closed state and a non-locked position for opening Anda locking means movable,
The driving gear and the driven gear mesh with the rotation of the cartridge lid from the opening to the shielding.

[0007]

[Operation] In the above configuration, when loading a film, the patrone cover is opened, and the film patrone is dropped from the patrone opening. Then, the patrone cover is closed, and the film is loaded. When the patrone lid is closed, the patrone lid
Lock position to keep the shielded state
In conjunction with the movement of the lock means that can move to the lock position,
When the clutch means is in the locked position, the drive means and the driving force transmission
Drive means in the unlocked position.
The connection to the power transmission means is disabled .

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

FIG. 1 is a perspective view of the camera showing the first embodiment in a state where a film cartridge lid is opened. The camera of the present embodiment is a camera that loads a cartridge type film cartridge having no tongue-shaped leader portion by dropping it into a cartridge chamber.
That is, the patrone 15 is loaded from the patrone opening 2a of the exterior 2 shown in FIG. 1, the patrone cover 7 is closed,
This is a state in which shooting is possible. As shown in FIG. 1, a strobe window 5 and a finder window 4 are provided at the top of the camera, and a lens barrel 3 is provided at the center. Note that FIG.
FIG. 3 is a longitudinal sectional view around the patrone chamber 1c of the present camera, and FIG. 3 is an enlarged plan view of a mechanism around the patrone lid 7. FIG. 4 is a configuration diagram of a film supply / rewind drive system of the present camera.

The structure of the camera will be described in detail. As shown in FIG. 1, the exterior 2 is provided with a patrone opening 2a into which a film patrone 15 can be inserted from below, and the main body 1 has a patrone for storing the patrone. A chamber 1c is formed. The exterior 2 has the opening 2
The patrone cover 7 is rotatably supported by the support shaft 2b so as to be rotatable between a position where the cover a is shielded and a position where the cover is retracted from the opening 2a. The patrone cover 7 has an unlocked position 8 which retracts inside the outer shape of the patrone cover 7 as shown in FIG.
A lock lever 8 is rotatably supported at (A) and a lock position 8 (B) projecting outside the outer shape.

Further, as shown in FIG.
, A lock knob 9 fastened to the lock lever 8 with a screw 17 is rotatably supported. Patrone cover 7
When is in the shielding position, rotate the lock knob 9 to
The rider rides on the click projection 7a provided on the patrone cover 7.
When the lock lever 8 is over the lock position 8 (A) shown in FIG.
, The lock lever 8 engages the exterior 2,
The patrone cover 7 is prevented from being opened. When the lock lever 8 gets over the click protrusion 7a provided on the lid 7 and is turned to the unlocked position 8 (B), the engagement between the lock lever 8 and the exterior 2 is released, and the cartridge lid 7 is closed. It can be opened. Further, an R gear 28 for rotating and holding a rewind R fork 29 engaged with a winding shaft of the patrone 15 so as to be able to move forward and backward is provided on the patrone cover 7.
Are rotatably supported. The R gear 28 can mesh with a planetary gear 27b of a rewinding drive system described later when the cartridge lid 7 is shielded.

[0012] This camera, as shown in FIG. 4, rewinding the drive system and feed drive system is provided for the film drive. The drive motor 20 of the drive system is the main body 1 (FIGS.
22), and normal / reverse rotation and stop control are performed via a drive circuit 62 by a control circuit 61 shown in FIG.
A pinion gear 21 is fixed to an output shaft of the motor 20 and connected to a known planetary clutch mechanism via a reduction gear 22. The planetary clutch mechanism includes a driving gear 23a, a sun gear 23b, and a planetary gear 23c. The gear of the spool 11 of the feed drive system and the rewinding of the rewinding drive system depend on the rotation direction of the motor 20. The driving force can be selectively transmitted to the gear train 24. The planetary gear 23c at that time rotates to the meshing position 23c (A) and the position 23c (B), respectively.

The rewinding drive system comprises, in addition to the rewinding gear train 24, an intermediate gear 26 and a rewinding planetary gear mechanism serving as clutch means, and the rotation of the rewinding gear train 24 is transmitted to the R gear 28. Transmitted, film 16
(See FIG. 5). As shown in FIG. 3, the planetary gear mechanism includes a sun gear 27a, a planetary gear 27b, a carrier 27c, and an urging spring 27e.
It consists of. The intermediate gear 26 is rotatably supported by the main body 1 and meshes with the gear train 24.
The sun gear 27 a is rotatably supported by the main body 1 and meshes with the intermediate gear 26. The carrier 27c is rotatably supported coaxially with the sun gear 27a. The planetary gear 27b is connected to the carrier 2
7c is rotatably supported at the tip end side and meshes with the sun gear 27a. The carrier 27c is urged clockwise in FIG. 3 by an urging spring 27e. As shown in FIG. 2, a protrusion 27d extending in the axial direction of the planetary gear 27b is formed on the distal end side of the carrier 27c.

The projection 27d is opposed to a lock lever 8 provided on the patrone cover 7 in a shielded state. When the lock lever 8 is turned to the lock position 8 (A), the projection 27d is formed. Is pressed by the lock lever 8. And, the planetary gear 27b is the R gear 28 of the patrone cover 7.
Mesh with. Also, rotate the lock lever 8 counterclockwise in FIG.
When it is turned to the unlock position 8 (B),
The carrier 27c is rotated clockwise by an urging spring 27e and abuts against a stopper 1d planted on the main body 1. By this operation, the engagement of the planetary gear 27b with the R gear 28 is released. In this state, the patrone cover 7 can be opened, but the carrier 27c and the planetary gear 27b are at positions where they do not interfere with the patrone chamber 7 during the opening operation.

When the film cartridge 15 is loaded,
As shown in FIG. 2, the cartridge lid is in an open state. At this time, the carrier 27c and the planetary gear 27b are brought into contact with the R gear 28 by the urging force of the urging spring 27e as described above .
The patrone 15 that is retracted from the meshing position and is loaded
Does not interfere with After loading the film cartridge 15, but closes the cartridge cover 7, then the carrier 27c and Yu
The star gear 27b is composed of the patrone cover 7, the R gear 28 ,
It does not interfere with. The lock knob 9 is driven while the patrone lid 7 is kept closed, and the lock lever 8 is turned from the unlocked position 8 (B) to the locked position 8 (A). By the rotation, the tip of the lock lever 8 is moved to the patrone cover 7.
And is positioned above the inner wall of the exterior 2 so that the patrone lid 7 is kept closed. Lock lever 8 at the same time
3 abuts against the protrusion 27d of the carrier 27c, and rotates the carrier 27c counterclockwise in FIG. 3 against the biasing spring 27e.
It is rotated to Ri. By this rotation, the planetary gear 27b and the R
The gear 28 is engaged.

The patrone cover 7 has a waterproof packing 10a and a lock knob 9 at its joint with the exterior 2 .
The waterproof packing 10b is integrally provided at the joint . When the patrone cover 7 is closed, the packing 10a
And the patrone lid 7 are pressed against each other to maintain watertightness. Pa
The packing 10b is between the patrone cover 7 and the lock knob 9.
Keep watertight. Although not shown, the watertightness of the joint with the other exterior is maintained by a known technique such as an O-ring, packing, ultrasonic welding, and bonding.

FIG. 5 is a perspective view of the film cartridge 15 used in the camera of this embodiment, which does not have a leader for drawing out a film. A boss 16c is integrally planted at the leading end of the film 16, and has a structure capable of abutting on the notch 15c of the patrone 15 to prevent the film 16 from being involved. A locking hole 16b is provided at the center of the leading end of the film 16. A slope 1 is provided at the end face of the film outlet 15a of the patrone 15.
5b are formed.

FIG. 6 is a perspective view of a film winding spool and a drawer sheet incorporated in the camera of the present embodiment. FIG. 7 is a plan view of the leading end of the sheet.
FIG. 8 is a sectional view taken along line BB of FIG. As shown in these figures, the leading end of the drawer sheet 12 has an exterior 2 described later.
A holding hole 12b is provided at a position facing a sheet spring 18 made of a leaf spring attached to the holding member. In the vicinity of the spool side of the holding hole 12b, a claw 12a to be locked in the locking hole 16b of the film 16 is planted on the back surface of the sheet 12 in FIG. Bosses 16c of the film 16 are provided on both sides of the claws 12a.
Are provided with a plurality of escape holes 12c.
The root of the sheet 12 is fixed to the spool 11, and when the sheet 12 is wound around the spool 11, the sheet 1
The seat 12 is provided with a plurality of escape holes 12d so as to escape the second claw 12a. Further, the spool 11 has a recess 1 serving as an escape portion for the boss 16c and the claw 12a.
1a is provided.

FIGS. 9, 11, and 12 are cross-sectional views of the camera of the present embodiment in a state where the film is loaded, wound up, and taken out. 9 is a state immediately after the patrone 15 is loaded, FIG. 11 is a state in which the drawer sheet 12 is wound up, and then the film 16 is wound on the spool 11, FIG.
Shows a state in which the patrone 15 has been removed after the photographing. FIG. 10 is an enlarged view of the locking portion “E” of the seat 12 of FIG.

The drive motor 20 is fixed to the main body 1, and a spool 11 is rotatably supported on the outer periphery of the motor 20 as shown in FIG. Further, a patrone presser 18 is swingably supported by a stepped screw 19 on the exterior 2 on the patrone chamber 1c side. The patrone press 18 is formed of an elastic metal plate, and has a contact portion 18b with the patrone 15 and a locking hole 12b of the drawer sheet 12.
And an elastic portion 18a in contact with the exterior 2 is a member integrally formed. The patrone press 18 is urged in the CW (clockwise) direction in FIG. 9 by the elastic portion 18a.

Then, as shown in FIGS.
5 is loaded, the contact portion 18b of the patrone presser 18 contacts the patrone 15 and the patrone 15
Is located at a predetermined home position. At this time, the locking portion 18c
Is at a position where the drawer sheet 12 is not pressed. However, as shown in FIG. 12, when the patrone 15 is not loaded, the patrone presser 16 is further rotated in the CW direction in FIG. 9 by the elastic force of the elastic portion 18a, and the locking portion 18c is pulled out of the sheet. 12 into the locking hole 12b,
The seat 12 is locked, and the sheet 12 is held in the state shown in FIG.

The operation of the above-configured camera of this embodiment, such as loading and unloading of a film cartridge, and feeding of a film will be described. When loading the film cartridge 15 into the camera, first, when the lock knob 9 is rotated to the unlock position, the lock lever 8 is also moved to the unlock position 8.
(B), the carrier 27c is rotated by the biasing spring 27e.
Withdrawing from the gear 28, the patrone cover 7 can be opened. At this time, the drawer sheet 12 and the like are in the state shown in FIG. 12, the patrone press 18 is rotated in the CW direction by a spring, and the left presser 18c is
Into the holding hole 12b, thereby preventing the drawer sheet 12 from moving. Then, the patrone lid 7 is opened, and the patrone 15 is loaded on the camera as shown in FIG. Carrier 27
c, the planet gear 27b is retracted to the retracted position 27b (B), and does not interfere with the cartridge 15. When the patrone is loaded, the drawer sheet 12 is at the position shown in FIG. 12, and the patrone 15 does not cause the drawer sheet 12 to be folded.

Further, when the patrone 15 is inserted, the state shown in FIG. 9 is obtained, and the patrone 15 comes into contact with the patrone press 18b, and the patrone press 1 against the force of the elastic portion 18a.
8 is rotated in the CCW direction on FIG. This Pato
The locking portion 18c of the rhone presser 18 is
The sheet 12 is retracted from the locking hole 12b, and comes into contact with the cartridge 15 with its own spring property. After that, Patrone 15
Is inserted into the predetermined position, the claw 12a of the drawer sheet 12 enters the locking hole 16b of the film 16. This state is shown in the enlarged view of FIG.

Thereafter, when the patrone lid 7 is closed and the lock knob 9 is rotated to the lock position, the lock lever 8 presses the projection 27d of the carrier 27c, and the planetary gear 27
b is located at the meshing position 27b (A) and meshes with the R gear 28 (see FIG. 3). The lock lever 8 is once rotated and held at a lock position 8 (A) where the click protrusion 7a has been pushed and passed, and the lock lever 8 is engaged with the exterior 2 so that the patrone cover 7 is in the closed state. Is held, and opening is prevented.

A change in the state of the patrone cover 7 from the open position to the closed position is detected by a switch serving as the patrone cover open / close detecting means 64 shown in FIG. 22 which will be described later, and the motor 20 is controlled by the control circuit 61 shown in FIG. To rotate to CW. The planetary clutch engages with the gear on the spool 11 side, and the spool 11 rotates in the winding direction. The drawer sheet 12 moves by the rotation of the spool 11. Then, the film 16 is pulled out from the patrone 15 with the claws 12a of the sheet 12 locked in the locking holes 16b of the film 16, and wound around the spool 11 (see FIG. 11).

After the photographing is completed, the control circuit 61
Is rotated in the CCW direction on FIG. As a result, the planetary gear 23c of the planetary clutch is engaged with the rewind gear train 24, and the R gear 28 rotates. R
The take-up shaft of the cartridge 15 is rotated by the fork 29, and the film 16 is rewound. At the end of rewinding, the drawer sheet 12 is placed on the slope 15 b of the cartridge 15.
And the claws slightly come off the holes of the film 16 (see FIG. 9). Then, the perforation 16a of the film 16 is detected by the film feed detecting means 63 in FIG. 22 to be described later as not moving, and the drive motor 20 is stopped by the control circuit 61.

Next, the lock lever 8 is rotated from the lock position 8 (A) to the unlock position 8 (B) by the lock knob 9 of the cartridge lid 7 (see FIG. 3). As a result, the lock lever 8 is housed in the patrone cover 7,
The lock of the patrone lid 7 is released, and the carrier 27c and the planetary gear 27b are retracted. Then, patrone lid 7
Is released, and the patrone 15 is taken out. Patrone 15
Of the drawer sheet 12, the claw 12a of the drawer sheet 12 has its arcuate shape (see FIG. 7).
I get on the flat part from 6b. After this, Patrone 15
The patrone 15 is disengaged from the patrone presser 18 on the way, the patrone presser 18 rotates in the CW direction in FIG. 12, the sheet presser 18c is fitted into the presser hole 12b of the drawer sheet 12, and the sheet 12 is It is held in a state of being retracted from the patrone 15 (see FIG. 12).
Then, the patrone 15 is removed from the camera, and a series of operations ends.

As described above, in the camera of the first embodiment, the patrone 15, the film 16, the drawer sheet 1
The film 16 can be pulled out and wound up by a simple mechanism with a clever structure such as 2 and the film 16 is automatically inserted only by inserting the film cartridge 15 without a leader portion where the tongue of the film 16 is not exposed. It is pulled out and wound up reliably. Since the planetary gear 27b moves forward and backward with a simple mechanism in conjunction with the lock lever 8 of the patrone cover 7, there is no danger of damaging the teeth of the rewinding drive system gear when the patrone cover 7 is opened and closed. Moreover, winding the bottom of the main body 1, since the placing rewind drive intensive, the finder and A F or flash to as in the conventional example of a camera
Do etc. and without even the said drive unit is arranged to overlap, downsizing of the camera can be arranged space efficiently becomes possible. Further, since the patrone cover 7 is provided on the bottom of the camera, the camera has an excellent appearance. In addition, the patrone lid 7 is small, has little bending and deformation, the packing is reliably crushed, and the reliability of waterproofness is improved.

Next, a camera according to a second embodiment of the present invention will be described with reference to FIGS. The camera of this embodiment is also a camera to which a cartridge-shaped film cartridge 15 having no tongue-shaped leader is applied.
A patrone cover 47 is also provided below the camera, but the clutch mechanism of the R gear 28 held by the patrone cover 47 and the rewind drive system gear is different from that of the first embodiment. Further, the patrone cover 47 which can be moved to a lock position for holding the shielded state with respect to the exterior 2 and a non-lock position for opening the patrone cover 47 is provided.
An opening / closing knob 47a having a lock claw 47b as a locking means is integrally provided.

FIG. 13 is an external view of the camera of this embodiment, in which a lens barrel 3 is disposed at the center of the front long side, and a finder window / AF window 4, a strobe window 5 and the like are disposed above the camera. The battery cover 9 and the patrone cover 47 are provided on the lower surface side. The structure of the film cartridge applied to the camera of this embodiment and the drawer sheet for film drawer built in the camera are the same as those used in the first embodiment shown in FIGS. .

FIG. 14 shows a vertical section around the patrone chamber of the camera. A patrone chamber 1c for accommodating the patrone 15 is formed in the main body 1, and a patrone opening 2a for loading the patrone 15 is provided at a lower portion.
At the lower part of the main body 1, intermediate gears 25, 26 and a clutch gear 31, which are gear trains of a rewinding drive system,
The main body 1 is rotatably supported by a shaft and meshes with each other. However, the clutch gear 31 is a clutch means for the R gear 28, is slidably mounted in the axial direction, and a gear pressing spring 32 which is a compression spring is inserted between the gear 31 and the main body 1. And the gear 31
Is biased downward from the camera.

A patrone cover 47 capable of blocking the patrone opening 2a of the above-mentioned exterior 2 is rotatably supported on the exterior 2. An opening / closing knob 47a having a lock claw 47b serving as a locking means is integrally formed on the patrone cover 47 so as to be elastically movable. The lock claw 47b is engaged with the exterior 2 to close the patrone cover 7. Keep state.
An R gear 28 and an R fork 29, which are drive power transmitting means for rewinding, are rotatably supported on the patrone cover 47. In the closed position, the R gear 28 is connected to the clutch gear 3 described above.
1 can be engaged. However, if the R gear 28 and the clutch gear 31 are in a phase relationship where they do not mesh when the patrone cover 47 is closed, the clutch gear 31 is once pushed upward. Then, when the clutch gear 31 or the R gear 28 rotates, the R gear 28 and the clutch gear 31 mesh with each other to be in a connected state.

FIG. 15 is a configuration diagram of a film feeding / rewinding drive system of the camera of this embodiment. A drive motor 20, which is a film feed / rewind drive means, is fixed to the main body 1 and is driven and controlled by a control circuit 61 shown in FIG. A pinion gear 21 is fixed to an output shaft of the motor 20, and is connected to a known planetary clutch mechanism via a reduction gear 22 which is a film feeding and rewinding driving means. The planetary clutch mechanism has the same configuration as the mechanism described in FIG. The planetary clutch mechanism transmits the driving force to the spool 11 when the drive motor 20 rotates in the CW direction, and rotates the spool 11 in the winding direction. When the drive motor 20 is rotating in the CCW direction, the drive force is transmitted to the gear train 24 which is a rewind drive means,
The R gear 28 is driven via the intermediate gears 25 and 26 and the clutch gear 31. And R fork 29
Is rotated in the rewind direction, and the film 16 is rewound.

The operation of loading and unloading the film cartridge 15 and feeding the film of the film cartridge 15 of the second embodiment will be described. When the patrone is loaded, as shown in FIG.
If 7b is in the locked position and in the closed state,
The opening / closing knob 47a is moved to the left. Then, the lock claw 47b moves to the left unlocked position, the engagement with the exterior 2 is released, and the cartridge lid 47 can be opened. The patrone lid 47 is opened, and the patrone 15 is loaded from the direction shown in FIG. After inserting patrone 15,
The patrone cover 47 is closed. In the course of closing, the R gear 28 comes to a position where it meshes with the clutch gear 31. At this time, if the teeth of the clutch gear 31 and the teeth of the R gear 28 interfere with each other, the clutch gear 31 is lifted upward against the gear pressing spring 32 by the R gear 28.

When the patrone cover 47 is to be closed, the slope of the lock claw 47b comes into contact with the slope of the exterior 2, and as the patrone cover 47 moves, the lock claw 47b is once moved along the slope as shown in FIG. When the patrone cover 47 is closed, the lock claw 47b moves to the right lock position, and the patrone cover 47 is locked. The movement of the patrone cover 47 from the open state to the closed state is detected by a known switch which is a patrone cover open / close detecting means 64 described later, and the motor 20 is controlled by the control circuit 61 described later.
Rotate in the W direction. This rotation causes the spool 11 to rotate in the winding direction. Here, the film drawer sheet 12 is a sheet claw 12 similar to the camera of the first embodiment.
a is locked in the locking hole 16b of the film 16 and the film 1
6 is pulled out and wound on a spool 11 (see FIGS. 9 and 11). R gear rotates, clutch gear 3
When the phase of the gear 1 and the R gear 28 can be engaged, the clutch gear 31 moves downward by the pressing spring 32 and meshes with the R gear 28.

When a series of photographing is completed and the film is rewound, the motor 20 is controlled by the control circuit 61 in FIG.
The cartridge is rotated in the CW direction, and the winding shaft of the patrone 15 is rotated in the rewinding direction by the R fork 29 . Then, the drawer sheet 12 is rewound by the film 16 in the same manner as in the first embodiment. Then, in the vicinity of the end of the film, the sheet rides on the slope of the patrone 15, and the claw 12a of the sheet 12 is at a position where it slightly comes off. The boss 16c of the film 16 moves and stops until the boss 16c of the film 16 comes into contact with the notch 15c of the patrone 15 (see FIGS. 5 and 6).
reference). The fact that the perforations 16a have stopped moving is detected by a film feed detecting means 63, which will be described later, such as a photo reflector, and the control circuit 61 stops the drive motor 20. These film rewinding operations are the same as those in the first embodiment.

Next, when the opening / closing knob 47a is moved leftward in FIG. 14 to open the patrone cover 47, the lock claw 47b moves leftward, and the lock of the cover 47 is released.
The lid 47 can be opened. When the patrone 15 is taken out, the drawer sheet 1 is removed in the same manner as in the first embodiment.
The second claw 12a is disengaged from the locking hole 16b of the film 16 due to its arc shape (see FIG. 6). Further, the first
As with the embodiment, when the patrone 15 is pulled out,
The patrone 15 comes off from the patrone presser 18. The patrone press 18 rotates in the CW direction on FIG. 12 by the action of a spring and changes from FIG. 9 to FIG.
c holds the sheet 12. The patrone cover 47 is closed again, and a series of operations is completed.

As described above, according to the camera of the second embodiment, as in the case of the first embodiment, the winding and rewinding drive system is intensively arranged at the lower portion of the main body 1, so that the space efficiency is improved. The camera can be downsized. Further, since the patrone cover 47 is provided on the bottom of the camera, the appearance is good. In addition, because it is not a large rear lid as in the past, it has excellent light shielding properties,
In addition, it is possible to reduce the number of meshing of members for shading, the implantation of hair, and the like, resulting in an inexpensive and compact camera. Patrone 1
5 and the film 16 and the drawer sheet 12 and so on, the patrone 15 to the film 16
Can be pulled out and wound up, resulting in a small and inexpensive camera with easy film loading.

Further, as the clutch mechanism linked to the patrone cover, a mechanism in which the clutch gear can be moved up and down simply is used. Therefore, if the drive motor 20 rotates after the patrone cover is closed, the clutch can be surely connected. The gear 31 and the R gear 28 can be engaged with each other, and the film can be rewound without any risk of damaging the gear. Further, since the lock pawl 47b and the opening / closing knob 47a are integrally formed on the patrone cover 47, an inexpensive camera can be provided without having to provide a separate component as a lock mechanism.

Next, a camera according to a third embodiment of the present invention will be described with reference to FIGS. FIG. 16 shows the appearance of the camera of this embodiment. A lens barrel 3 is disposed in the center of the front of the exterior 2 of the camera, and a finder / AF window 4, a strobe window 5, and the like are disposed at the top. A release button 6 is provided on the upper surface. In the patrone opening 2a on the right side of the camera in FIG. 16, a patrone lid 57 for loading the film patrone 15 shown in FIG.

Driving means for winding and rewinding the film of the present camera, as shown in the longitudinal sectional view of FIG. 17 with the patrone cover 57 around the patrone chamber closed and the configuration of the film drive system of FIG. A drive system composed of a gear train 24, a clutch gear 50, etc., and an R gear 28, etc., which is a drive force transmitting means for transmitting the drive force of the drive system to the take-up shaft of the patrone 15, are located below the camera. Are located in

The drive system will be described in detail. As shown in FIG. 18, the drive motor 20 is fixed to the main body 1 (not shown), and the pinion gear 21 is fixed to the output shaft. The driving force is transmitted via the reduction gear 22 to a known planetary clutch means composed of a sun gear 23b integral with the intermediate gear 23d and a planetary gear 23c. When the motor 20 rotates in the CW direction, the planetary gear 23c of the planetary clutch mechanism meshes with the gear on the spool 11 side (rotational position 23c (A)), and transmits the driving force to the spool 11.

When the drive motor 20 rotates in the CCW direction, the planetary gear 23c of the planetary clutch mechanism meshes with the rewind gear train 24 (rotational position 23c (B)), and the driving force is transmitted via the intermediate gears 25 and 26. Clutch gear 50
To the R gear 28 and the R fork 29. FIG.
As shown in FIG. 7, the rotation of the clutch gear 50 is transmitted to the R gear 28 provided on the patrone cover 57. And by the rotation, it synchronizes with the R gear 28,
The R fork 29 supported so as to be vertically movable rotates,
The film is rewound.

The clutch gear 50 and the R gear 28 constitute a clutch means that is linked to the opening and closing of the patrone cover 57. That is, the patrone cover 5 shown in FIG.
In a state where the clutch 7 is released, the clutch gear 50 and the R gear 28 are in a connection-disabled state. However, the patrone lid 5
When the clutch 7 is closed, the clutch gear 50 and the R gear 28 are connected to each other, as shown in FIG. Then, the driving force of the driving motor 20 can be transmitted to the winding shaft of the cartridge 57.

FIGS. 19 and 21 are cross-sectional views of the camera in the loaded state and the unloaded state of the film cartridge.
In the figure, a spool chamber 1d is formed on the left side, and a spool 11 is rotatably supported on a shaft coaxially with a drive motor 20 fixed to the main body 1. Drawer sheet 12 on spool 11
Is fixed, and the distal end on the other end side is located on the patrone opening 2a side via the aperture opening 1a of the main body 1. As in the case of the first embodiment, a claw 12b for engaging with the engaging hole 16b of the film 16 shown in FIG. In addition, a predetermined portion of the drawer sheet 12 is provided with an opening for escaping the claw 12 b and the projection of the film 16. The spool 11 is also provided with a claw 12a and a recess 11a that escapes the boss 16c of the film. However, the locking hole 12b shown in FIG. 6 may not be provided in the drawer sheet 12 used in this embodiment.

As shown in FIGS. 19 and 20, the patrone cover 57 has a patrone storage chamber 57a.
Is rotatably supported by a support shaft 58. Further, the patrone cover 57 is attached to the patrone opening 2 shown in FIG.
a of the lock means of the patrone cover 57 in order to keep the patrone cover 57 in the shielding position 57 (A) in a state where the a
A lock knob 57c having 7d is provided integrally and elastically deformed. When the lock knob 57c is operated to release the engagement of the lock claw 57d with the exterior 2 and put it in the unlocked state, the patrone cover 57 can be turned to the open position 57 (B) shown in FIG. It will be exposed. In this state, the film cartridge 15 can be loaded or unloaded.

The operation of loading and unloading the film cartridge 15 and feeding the film of the film cartridge 15 of the camera constructed as above according to the present embodiment will be described. First, the patrone cover 5
From the closed state of 7, the patrone cover 57 is opened as shown in FIGS. To release in this manner, the lock claw 5c is moved upward in FIG.
The lock of the 7d with the exterior 2 is released, and the patrone cover 57 can be opened. In this state, the film cartridge 15 is inserted from above. Thereafter, when the patrone cover 57 is closed, the lock claw 57d is locked by the exterior 2, and the patrone cover 57d is locked.
Is kept closed. When the cartridge lid 57 is closed, the drawer sheet 12 comes into contact with the film 16 and is pressed. At this time, the claws 12a enter the holes of the film 16 (see FIG. 20, which is an enlarged view of the "D" portion in FIG. 19). Further, by closing the patrone cover 57, the clutch gear 50 and the R gear 28 are engaged.

Then, the fact that the patrone cover 57 is closed is detected by a well-known switch which is a patrone cover open / close detecting means described later, and the drive motor 20 is rotated in the CW direction (see FIG. 18). Then, the film 16 is wound up on the spool 11 side via the drawer sheet 12, so that photographing can be performed.

When the drive motor 20 is rotated in the CCW direction (see FIG. 18) after the photographing is completed, the take-up shaft of the patrone 15 is rotated via the R fork 29 ,
We wind up 6. At the end of rewinding, the boss 16c of the film 16 comes into contact with the notch 15c of the cartridge 15, and the film 16 cannot be unwound (see FIG. 5). The drive motor 20 is stopped by detecting that the perforations 16a of the film 16 have stopped moving by a known means such as a PR (photo reflector) which is a film feed detecting means described later. Then, the lock knob 57c is operated again to open the patrone cover 57 as shown in FIG. 21, and the patrone 15 is taken out. Then, the patrone cover 57 is closed, and a series of operations is completed.

According to the camera of the present embodiment, the main body 1
Since a film feed / rewind drive mechanism can be arranged at the lower part of the camera and a finder, AF, strobe, etc. can be arranged at the upper part, a space-efficient and compact camera can be obtained. Also,
Since the patrone lid 57 is arranged on the side of the camera, loading of the patrone is easy and the appearance is improved. Furthermore,
Since it is not a large rear lid as in the prior art, it is excellent in light-shielding properties. In addition, it is possible to provide a small-sized and inexpensive camera that requires less engagement of light-shielding members and less flocking. Patrone 1
5 and the film 16 and the drawer sheet 12, etc., the patrone 15 and the film 1
6 can be pulled out and rolled up, resulting in a small and inexpensive camera with easy film loading.

FIG. 22 shows the structure of a film drive electric control system commonly applied to the cameras of the first to third embodiments. A control circuit 61 composed of a CPU or the like receives a signal from a film feed detecting means 63 composed of a photoreflector and detecting movement of perforation. Further, a signal is also input from a patrone cover open / close detecting means 64 for detecting the patrone cover open / close state constituted by a leaf switch. Based on these signals, the control circuit 61 drives the film winding / rewinding drive motor 20 via the drive circuit 62. The drive circuit 62 is formed of a bridge circuit using power transistors.

[0052]

As described above, according to the camera of the present invention, the transmission means is supported by the camera on the patrone lid,
By disposing the transmitting means and the driving means at the lower part of the camera, the camera can be made smaller. In addition, since the connecting operation of the transmission means and the driving means is also performed in conjunction with the patrone lid, the reliability is increased without the user having to carelessly touch the patrone or the film driving unit in the open state of the lid, It has many remarkable effects such as good appearance.

[Brief description of the drawings]

FIG. 1 is a perspective view of the appearance of a camera according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view around a patrone chamber of the camera of FIG. 1;

FIG. 3 is an enlarged view of a clutch mechanism of a film rewind drive system of the camera of FIG. 1;

FIG. 4 is a configuration diagram of a film feeding and rewinding drive system of the camera of FIG. 1;

FIG. 5 is a perspective view of a film cartridge applied to the camera of FIG. 1;

FIG. 6 is a perspective view of a spool and a drawer sheet built in the camera of FIG. 1;

FIG. 7 is an enlarged plan view of the leading end of the drawer sheet of FIG. 6;

FIG. 8 is a sectional view taken along the line BB of FIG. 7;

9 is a cross-sectional view of the camera of FIG. 1 in a state where a film cartridge is loaded.

FIG. 10 is an enlarged view of a portion “E” in FIG. 9;

FIG. 11 is a cross-sectional view of the camera of FIG. 1 in a film-wound state.

FIG. 12 is a cross-sectional view of the camera of FIG. 1 in a state where a film cartridge is taken out.

FIG. 13 is a perspective view of the appearance of a camera according to a second embodiment of the present invention.

FIG. 14 is a longitudinal sectional view around the patrone chamber of the camera of FIG. 13;

FIG. 15 is a configuration diagram of a film feeding / rewinding drive system of the camera of FIG. 13;

FIG. 16 is a perspective view of the appearance of a camera according to a third embodiment of the present invention.

FIG. 17 is a longitudinal sectional view around the patrone chamber of the camera of FIG. 16;

FIG. 18 is a configuration diagram of a film feeding / rewinding drive system of the camera of FIG. 16;

19 is a cross-sectional view of the camera of FIG. 16 in a state where a film cartridge is loaded.

FIG. 20 is an enlarged view of a “D” part in FIG. 19;

21 is a cross-sectional view of the camera of FIG. 16 in a state where a patrone cover is opened.

FIG. 22 is a block diagram of a film drive electric control system built in the cameras of FIGS.

[Explanation of symbols]

1 Camera body 2a Patrone opening 7, 47, 57 Patrone cover 8 Lock lever (lock means) 8 (A) Lock position 8 (B) Unlocked position 15 Film cartridge 20 Drive motor (drive means) 27b Planet Gear (driving force transmission means,
Clutch means) 27c Carrier (clutch means) 28 ... R gear (driving force transmitting means) 31, 50 ... Clutch gear (driving force transmitting means, clutch means) ) 47b, 57d: Locking pawl (locking means)

Continuation of the front page (56) References JP-A-3-233438 (JP, A) JP-A-4-80734 (JP, A) JP-A-2-67536 (JP, A) JP-A-64-243627 (JP) JP-A-2-58036 (JP, A) JP-A-1-202738 (JP, A) JP-A 52-102726 (JP, U) JP-A 63-43627 (JP, U) (58) Field surveyed (Int.Cl. ⁷ , DB name) G03B 17/02-17/30

Claims (3)

(57) [Claims] 1. A patrone opening for inserting a film patrone, a patrone cover which is opened when the film patrone is inserted or taken out, and which is shielded after the film patrone is inserted; Driving means for returning, rotatably supported by the patrone cover, and in the open state of the patrone cover, connection with the driving means is impossible,
A driving force transmitting unit that is connected to the driving unit in the shielded state of the patrone cover and is capable of transmitting a rotational driving force to a winding shaft of the film cartridge; and a lock position that holds the shielded state of the patrone cover. Locking means movable to a non-locking position enabling opening, and the patrone lid is raised in conjunction with the movement of the locking means.
When the patrone opening is shielded, clutch means for connecting the driving means and the driving force transmitting means in the locked position and disabling the driving means and the driving force transmitting means in the unlocked position. A camera characterized in that: 2. A patrone opening for inserting a film patrone, a patrone cover which is opened when the film patrone is inserted or taken out, and which is shielded after the film patrone is inserted; Driving means having a driving gear for returning, and rotatably supported by the patrone cover, the connection with the driving means is not possible in the open state of the patrone cover,
A driving force transmitting unit having a driven gear capable of transmitting a rotational driving force to a winding shaft of a film cartridge by being connected to the driving gear of the driving unit when the patrone cover is shielded; A lock means movable between a locked position for maintaining the closed state and a non-locked position for enabling the open state, and movement of the patrone cover from the open position to the closed position.
On the way, the drive gear meshes with the driven gear.
The drive gear is provided in the axial direction.
An urging member that urges to be displaceable, and in the middle of the movement of the patrone cover from the open position to the shielding position, the drive gear can be displaced in its axial direction at the beginning of engagement of the drive gear with the driven gear. And a clutch means. 3. A film cartridge which is inserted into a film cartridge in a direction parallel to the winding axis of the film cartridge, and wherein the film opening is rotated about a rotation axis of the film cartridge which is arranged in parallel with the winding axis of the film cartridge. A patrone cover that is opened when the patrone is inserted or taken out and shielded after the film patrone is inserted, a drive gear provided on the camera body and configured to rewind the film, and rotatably supported by the patrone cover. When the patrone cover is open, connection with the driving means is not possible. When the patrone cover is closed, the rotation shaft which is connected to the drive gear of the driving means and transmits a rotational driving force to a winding shaft of the film patrone. A driven gear having a rotation axis parallel to the above, and a lock position for holding the above-mentioned patrone cover in a closed state and opening the lockable. A locking means movable to an unlocked position, and wherein the driving gear and the driven gear mesh with the rotation of the cartridge cover from the opening to the shielding. .