JP2002023234A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To release lock of a cartridge chamber, without changing the use state display of a spool after VEI processing. SOLUTION: A driving member 45 is engaged with the spool of a film cartridge and drives it. A driving gear 41 transmits the rotation of a feeding motor to the driving member 45. The driving gear 41 and the driving member 45 are engaged by an engaging part 41a and a part which is to be engaged 50a respectively provided. When rotation of the feeding motor is switched over after the completion of the VEI processing, the driving gear 41 starts rotating so that locking of the cartridge chamber is released. When the driving gear 41 is rotated by a fixed angle less than one rotation, engagement is started, so that the driving member 45 starts rotating with a time delay. The driving member 45 is freely turnably supported on the upper face of the cartridge chamber 5, so that the driving member 45 and the driving gear 41 maintain a non- contact state during a delay period, while the driving gear 41 is supported freely turnably by a top board 61 and also supported by a pressing plate 48 from a lower side.

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 having a safety lock mechanism for locking a lid of a cartridge chamber and releasing the lock after VEI processing is completed.

[0002]

2. Description of the Related Art Various types of film cartridges called IX240 type, in which a photographic film having a small screen size is entirely stored in a cartridge body smaller than a 135 type film cartridge, are sold. As is well known, a use state display mechanism for displaying the use state of the stored photographic film is incorporated in this film cartridge. This use state display mechanism includes four openings having different shapes formed on the end face of the cartridge body, and a display plate provided at one end of the spool and rotating integrally with the spool behind the opening. Each of the openings is assigned a use state of unused, in the middle of shooting, taken, and developed. The use state given to the opening through which the display board can be viewed indicates the current use state of the photographic film. It has become.

In a camera loaded with this film cartridge, after the photographic film is completely rewound into the cartridge body, the spool is continuously rotated in the rewinding direction, and the use state display plate is set at a position corresponding to the use state of the cartridge. VEI (Visual Exposure Indicat)
e) A use state setting mechanism for performing processing is incorporated. Also, this camera has a safety lock mechanism that locks the opening of the cartridge chamber lid so that the cartridge chamber lid that opens and closes the cartridge chamber does not open accidentally when the film is pulled out of the cartridge. It is.

As a driving method of the safety lock mechanism, for example, there is a method of driving a lock member by a feed motor for driving a spool, as filed by the present applicant in Japanese Patent Application No. 11-280317. . According to this, the cartridge chamber lid can be locked during VEI processing in addition to feeding the photographic film. In addition, there is an advantage that downsizing can be achieved as compared with a method using a lock member with an electromagnet. Release of the lock by this method
After the EI processing is completed, the EI processing is performed by slightly rotating the feed motor in the film winding direction. In this case, a delay transmission mechanism for transmitting the rotational force to the spool with a slight delay from the start of rotation of the feed motor is provided so that the spool starts rotating in the winding direction after the lock is released.

For example, as shown in FIG. 20, a delay transmission mechanism is provided between a spool drive member 121 which directly engages with and drives a spool, and a transmission gear 122 which transmits torque from a feed motor. And a drive gear 123 is provided. The driving gear 123 and the spool driving member 121 are connected to the engaging portion 1 formed on the driving gear 123.
23a and the engaged portion 121a formed on the spool drive member 121 engages. As a result, the rotation of the drive gear 123 causes the engagement portion and the engaged portion 121 to rotate.
a and 123a are transmitted to the spool drive member 121 only when they come into contact with each other. Thus, when the rotation direction of the feed motor is switched, the rotation of the drive gear 123 is transmitted to the spool drive member 121 with a delay.

The spool driving member 121 is rotatably supported by fitting with a boss 126a formed on the upper surface of the cartridge chamber 126. Spool drive member 121
A gear holding portion 124 is formed on the upper surface of the drive gear 123, and the drive gear 123 is held by the gear holding portion 124. An annular support ridge 127 is formed on the holding portion 124, and the drive gear 123 is rotatably supported by fitting to the support ridge 127. In addition,
Reference numeral 130 is a top plate.

[0007]

However, in the conventional method, since the drive gear contacts the spool drive member at the gear holding portion, when the drive gear rotates, the spool drive is caused by frictional force due to sliding contact with the drive gear. The member will rotate. When the entrainment occurs, the spool position set by the VEI processing may be shifted and the use state display may be changed.

An object of the present invention is to solve the above-mentioned problems, and it is an object of the present invention to release a safety lock with a simple configuration without changing a display of a use state of a cartridge.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a camera according to the present invention comprises a driving gear which rotates forward when a film is wound up and reversely rotates when a film is rewound by driving a feed motor, and a driving gear for the same. The gear rotates in a forward direction or a reverse direction by a fixed angle of less than one rotation, and engages with the drive gear, and rotates in the same direction together with the drive gear to rotate the film cartridge spool in the film winding direction or the film unwinding direction. After the film rewinding is completed, the feed motor is continuously rotated reversely, and the display plate that rotates integrally with the spool in the film cartridge is set to a position corresponding to the use state of the photo film, and the setting is completed. A use state setting mechanism for stopping reverse rotation of the rear feed motor, and during normal rotation of the spool driving member; During the reverse rotation, the lid of the cartridge storage chamber is locked, the rotation direction of the drive gear is switched from the reverse rotation direction to the forward rotation direction, and the drive gear is rotated forward by less than the predetermined angle and stopped, thereby locking the lid. In a camera having a lock mechanism for releasing, the drive gear and the spool drive member are individually rotatably held, and the drive gear and the spool drive member are in a non-contact state while the drive gear rotates by the predetermined angle. Is maintained.

A spool driving member is coaxially arranged below the driving gear, a bottom surface of the driving gear is held by a pressing plate fixed to a camera body, and a spool is formed by a boss formed on an upper surface of an outer wall of the cartridge storage chamber. It is preferable to hold the bottom surface of the driving member. Further, a part of the pressing plate may be bent downward, and the tip may be pressed against the upper surface of the spool driving member.

[0011]

FIG. 1 is a perspective view showing a state in which a film cartridge of a camera embodying the present invention is loaded from the bottom side. At the center of the front of the camera 2 is a shooting lens 3
A cartridge chamber 5 in which a film cartridge 4 is loaded and a film chamber (not shown) in which a photographic film 6 is wound are provided on the side of the taking lens 3 inside the camera 2. . Cartridge chamber 5
Is formed on the side of the bottom surface of the camera 2 and is opened and closed by a cartridge chamber lid 8 whose one side is pivotally supported on the bottom surface of the camera 2.

The cartridge chamber lid 8 is locked at a closed position by a cartridge chamber lid opening / closing mechanism described later. On the inner surface of the cartridge chamber lid 8, a hook 10 locked by the cartridge chamber lid opening / closing mechanism, a pressing member 11 that pushes up the film cartridge 4 into the cartridge chamber 5, and a pressing piece that pushes and resets the eject mechanism 12. 13 are provided. Eject mechanism 12
When the cartridge chamber lid 8 is opened, the film cartridge 4 is pushed out of the cartridge chamber 5 to facilitate removal.

An operation member 15 constituting a cartridge chamber lid opening / closing mechanism is attached to the side of the camera 2 on the side of the cartridge chamber 5. The operation member 15 is incorporated so as to be slidable vertically in the slit 2a. When the cartridge chamber lid 8 is locked at the closed position, the operation member 15 is disposed on the lower side. When the cartridge chamber lid 8 is opened, the operation member 1
Slide 5 upward. As a result, the cartridge chamber lid opening / closing mechanism releases the lock of the hook 10 and opens the cartridge chamber lid 8.

As shown in FIG. 2, on the back of the camera 2,
A finder eyepiece window 17 and a liquid crystal display panel (hereinafter, referred to as LCD) 18 on which various information is displayed are provided. A switch button (PQ switch) 19 for specifying the number of prints and a title character language in order from the left, a switch button (ST switch) 20 for setting a title word, a title already set, etc. Is provided with a switch button (rewrite switch) 21 for executing the change. LCD1
8, a dot matrix type is used,
It is driven and controlled by a microcomputer described later via an LCD control circuit (not shown).

A film rewind switch (MR switch) 22 is provided at the lower right corner on the back of the camera 2. By operating the MR switch 22, the photographic film 6 can be rewound into the cartridge body even before all frames have been shot. A shutter button 23 is provided on the upper surface of the camera 2.

As shown in FIG. 3, the film cartridge 4 comprises a cartridge body 25 and a photographic film 6 housed in the cartridge body 25. In the cartridge body 25, a spool 26 around which the photo film 6 is wound is rotatably incorporated. At both ends of the spool 26, engagement holes 26a are formed for engagement with engagement shafts provided in a camera or the like, and are exposed from both end surfaces of the cartridge body 25. Further, in the cartridge main body 25, a film sending mechanism for sending the photographic film 6 from the film entrance by a rotation of the spool 26 in the film sending direction is incorporated.

The photo film 6 includes a plurality of photographing frames 35.
a to 35 end are formed continuously, and the rear end is locked to the spool 26 of the cartridge body 25. Perforations 36a and 36b indicating the leading end position and the trailing end position of each photographing frame are provided on one side edge of the photographic film 6.
Are formed. One perforation 37 is further formed in front of the first perforation 36a on the film tip side. The leading perforation 37 is used for controlling a first frame set (FFS) for setting the first frame 35a in a photographable state when the film cartridge 4 is loaded into the camera 2.

The photographic film 6 has a well-known photosensitive emulsion layer formed on one surface (front surface) of the base and the other surface (back surface).
Is coated with a magnetic material to form a transparent magnetic recording layer. On the other side edge of the photo film 6, each frame 35
a to 35end corresponding to the magnetic recording units 38a to 38en
d is provided. These magnetic recording portions 38a to 38
In the end, exposure control data of a frame, the number of prints, title data, and the like are magnetically recorded by a magnetic head described later.

The final frame 35en of the photo film 6
An auxiliary perforation (turnaround perforation) 39 is formed behind d. The auxiliary perforations 39 are used to mechanically or optically detect the rear end of the photographic film 6.

As shown in FIG. 4A, which is a cross-sectional view of a main part of the film cartridge 4, the film entrance 25a of the cartridge body 25 is located at the back of the film entrance 25a.
A rod-shaped light-shielding lid 28 that opens and closes a is rotatably incorporated. The central portion of the light-shielding lid 28 is formed in a plate shape, and is rotated between an open position for opening the film entrance 25a and a closed position for closing the film entrance 25a as shown in FIG. . Further, as shown in an enlarged manner in FIG. 5, engagement holes 28 a are formed at both ends of the light-shielding lid 28 so as to be engaged with an engagement shaft provided in a device such as a camera. It is exposed from both ends.

As shown in FIGS. 5 and 6, in the cartridge body 25, a data disk 30 and a display plate 31 which rotate together with the spool 26 are incorporated. The data disk 30 is a disk-shaped member fixed to the end of the spool 25, and has a bar code on the surface thereof such as the type, sensitivity, and number of shots of the photographic film 6 stored in the cartridge body 25. It is noted by:

As is well known, the data disk 30
A code pattern including a quiet zone 30a formed by cutting out a part of the outer periphery of the data disk 30 and a code portion 30b including a black bar and a white bar is formed. The bar code of the data disk 30 is formed in an opening 25 formed on one end face of the cartridge body 25.
b and is read by the bar code reader 54 incorporated in the camera 2 or the photographic printer.

As the bar code reader 54, for example,
A photosensor including a light source for irradiating the data disk 30 with light and a light receiving unit for receiving the reflected light reflected therefrom is used. The bar code reader 54 reads the code pattern and sends a detection signal to the microcomputer. Since the black bar and the white bar have different reflectances, the bar code reader 54 generates two detection signals of a high level and a low level. The microcomputer identifies the black bar and the white bar based on the difference between the detection signals. The reflectance of the black bar and the quiet zone 30a are almost the same, but the angle of the quiet zone 30a is larger than that of the black bar. Therefore, if the white bar is not detected during the constant rotation of the feed motor, it is understood that the quiet zone 30a exists. As described above, the microcomputer detects each of the quiet zone 30a, the black bar, and the white bar based on the detection signal from the bar code reader 54 and the rotation amount of the feeding motor.

Further, since the position of the data disk 30 can be specified based on the detection signal of the bar code reader 54 and the rotation amount of the feed motor, the position of the spool 26 which rotates integrally with the data disk 30 is specified. be able to. Thus, the position of the spool 26 of the film cartridge 4 at the time of loading can be detected, and the stop position of the spool 26 can be controlled when rewinding is completed. The method of reading the data disk 30 and specifying the position of the spool 26 from the data disk 30 are described below.
The details are described in, for example, JP-A-10-31243 and JP-A-10-39366.

The display plate 31 is a component constituting a use state display mechanism of the film cartridge 4, and is a substantially fan-shaped plate member. The display plate 31 is used for the data disk 3
As in the case of 0, it is fixed to the opposite end of the spool 26. On the end face of the cartridge body 25 on the side where the display plate 31 is incorporated, four display openings 33a to 33d constituting a use state display mechanism are formed. As for these display openings, the circular display opening 33a indicates "unused", the semicircular display opening 33b indicates "imaging", the X-shaped display opening 33c indicates "photographed", and the square display opening 33d.
Indicates “developed”. The use state indicated by the display opening through which the display plate 31 can be visually recognized when the rotation of the spool 26 is stopped indicates the use state of the stored photo film 6.

When the film cartridge 4 is loaded, the camera 2 performs a use state detection process (DEP process) for detecting the use state of the film cartridge 4 at the time of loading.
This use state detection processing is performed by specifying the spool position at the time of loading when reading the data disk 30 by the barcode reader 54, as described above. When the DEP process is performed and the use state of the film cartridge 4 at the time of loading is detected as “photographed” or “developed”, the spool 26 is set to the position of the detected use state, and Is displayed, and the subsequent processing is stopped.

After the rewinding of the photographic film 6 is completed, the camera 2 continues to rotate the spool 26 in the rewinding direction to control the stop position of the spool 26,
VEI for setting the use state of the film cartridge 4
Do the processing. The control of the stop position of the spool 26 is also performed while reading the data disk 30 by the barcode reader 54. By the VEI processing, the use state of the film cartridge 4 is set to “during shooting” or “shooting completed”.

FIG. 7 is an exploded perspective view showing the construction of a cartridge chamber lid opening / closing mechanism and a safety lock mechanism for locking the same, and FIG. 8 is a sectional view showing a part of the film feeding mechanism. FIG. 9 is a block diagram showing an electric configuration of the camera. FIG. 10 is a plan view when the cartridge chamber cover opening / closing mechanism and the safety lock mechanism are in an initial state. FIG. -B-C-D-E-
It is sectional drawing on an F line.

On the upper surface of the cartridge chamber 5, a driving gear 41 constituting a film feeding mechanism and a transmission gear 42 for transmitting rotation of a feeding motor 44 to the driving gear 41 are rotatably mounted. The transmission gear 42 is supported by a support shaft 43 mounted on the upper surface of the cartridge chamber 5.
The upper end of the support shaft 43 is supported by a top plate 61 attached to the upper surface of the cartridge chamber 5.

An annular boss 61a is formed on the lower surface of the top plate 61, and the drive gear 41 is rotatably mounted by fitting an inner diameter portion 41a of the drive gear 41 to the boss 61a.
It is held from below by the holding plate 48. An engagement shaft 45 a that engages with the spool 26 of the film cartridge 4 is formed integrally with the spool drive member 45.
It is inserted into a hole formed in the boss 5 a on the upper surface of the cartridge chamber 5 and projects into the cartridge chamber 5. The spool drive member 45 is rotatably supported by fitting to the boss 5a.

A film feeding mechanism is formed between the transmission gear 42 and the feed motor 44, and a drive transmission mechanism 46 for transmitting the rotation of the feed motor 44 to the transmission gear 42.
Is incorporated. The drive transmission mechanism 46 includes a plurality of gears for reducing the rotation speed of the feed motor 44 and a planetary gear unit. The feed motor 44 is incorporated in a winding shaft 47 in the film chamber.

Although not shown in detail, the planetary gear unit includes a sun gear to which the rotation of the feed motor 44 is transmitted, and a sun gear that meshes with the sun gear and switches the rotation direction of the feed motor 44. And at least two planetary gears revolving around. These two planetary gears mesh with different gears after revolving, and transmit the rotation of the feed motor 44 to the transmission gear 42 and the winding shaft 47 when the film is wound up, and only to the transmission gear 42 when the film is unwound.

A clutch mechanism for idling the spool drive member 45 is incorporated between the planet gear and the transmission gear 42. This clutch mechanism has a winding shaft 4
The inconsistency between the film winding speed 7 and the film sending speed by the spool drive shaft 45 is absorbed by idling the spool drive member 45 to prevent the photographic film 6 from becoming loose.

The drive gear 41 has a substantially annular shape, and has a plurality of teeth on its outer periphery. An annular support ridge 50 is formed integrally with the upper portion of the spool drive member 45. Also, the inner diameter portion 41a of the drive gear 41
Has a pair of engaging projections 41b protruding inward.
Are formed integrally, and the outer peripheral surface of the support ridge 50 of the spool drive member 45 is provided with an engagement protrusion 41b of the drive gear 41.
Is formed with a pair of engaged projections 50a.

The engaging projection 41b and the engaged projection 50a constitute a delay transmission mechanism, and the rotation of the drive gear 41 is applied to the spool driving member 45 only when the projections 41b and 50a come into contact with each other. Is transmitted. Thus, when the rotation direction of the feed motor 44 is switched, the drive gear 41
After rotating by a certain angle less than the rotation, the engaging projection 41b and the engaged projection 50a start engaging, and the rotation of the drive gear 41 is transmitted to the spool drive member 45 with a delay.

As shown in FIG. 8, the drive gear 41 and the spool drive member 45 are engaged with the engagement projection 41b and the engagement projection 50.
drive gear 4 so that it does not come into contact with parts other than
A pressing plate 48 is arranged between the first driving member 45 and the spool driving member 45. The pressing plate 48 is, for example, a thin plate having elasticity made of metal or plastic. The holding plate 48 is fixed to the top plate 61 constituting the camera body by the screw 40. Thus, the pressing plate 48 does not rotate following the rotation of the driving gear 41.

As shown in FIG. 8B, a part of the pressing plate 48 is bent toward the spool driving member 45 before the top plate 61 is attached to the cartridge chamber 5. When the top plate 61 is attached to the cartridge chamber 5,
As shown in FIG. 8A, the spool driving member 45 pushes up the bent portion 48a to elastically deform the holding plate 48.
As a reaction due to this elastic deformation, the bent portion 48a is pressed against the upper surface of the spool driving member 45. In response to the bias from the holding plate 48, the spool driving member 45
Is pressed against the upper surface of the cartridge chamber 5. As a result, the spool driving member 4
5 is prevented from rotating carelessly.

The spool driving member 45 is integrally provided with a light shielding cover driving gear 52 composed of several teeth. The light-shielding cover drive gear 52 rotates the light-shielding cover 28 from the closed position to the open position at the time of film data reading and use state detection processing (DEP processing) performed immediately after the film cartridge 4 is loaded.

The light-shielding cover driving member 53 includes an engagement shaft 55 that engages with the engagement hole 28 a of the light-shielding cover 28, a cam portion 56 integrally formed on the engagement shaft 55, and a cam portion 56. And a gear portion 57 integrally formed on the gear. Engagement shaft 5
5 is rotatably inserted into a hole 5 b formed on the upper surface of the cartridge chamber 5, protrudes into the cartridge chamber 5, and engages with the light shielding cover 28 of the film cartridge 4. Cam part 56
Is used to turn the light shielding cover 28 from the open position to the closed position.

The gear portion 57 of the light shielding cover driving member 53 is composed of several teeth. FIG. 12 and A1 in FIG.
When the spool drive shaft 45 rotates in the film rewind direction during the DEP process, as shown in FIG. 13 which is a cross-sectional view taken along the line B1-C1-D1-E1,
Meshes with the gear portion 57. Accordingly, the light shielding cover driving member 53 is driven to rotate by the light shielding cover driving gear 52, and rotates the light shielding cover 28 to the open position as shown in FIG.

On the upper portion of the gear portion 57, a pin-shaped spring hook portion 59 is integrally formed. This spring hook part 59
, One end of a coil spring 60 is hung.
The other end of 0 is hung on the top plate 61. The coil spring 60 is
Acting like a toggle spring, it holds the light shielding lid driving member 53 at a position matching the closed position and the opened position of the light shielding lid 28. Further, during the rotation of the light shielding lid driving member 53, the light shielding lid 28 is urged toward the open position and the closed position of the light shielding lid 28 according to the rotational position.

As shown in FIG. 13, the spool driving member 4
5 has an engagement hole 26a of the spool 26 in the engagement shaft 45a.
An engaging plate 62 that engages with the key groove is incorporated. The engaging plate 62 is formed of an elastic thin metal plate, and is provided with the spool 26 of the loaded film cartridge 4.
Even if the stop position is different from the stop position of the spool drive member 45, the engaging shaft 45a can be inserted into the engaging hole 26a by being elastically deformed toward the engaging shaft 45a.

Below the spool driving member 45 on the upper surface of the cartridge chamber 5, a plate-shaped intermediate lever 63 constituting a cartridge chamber lid opening / closing mechanism is rotatably mounted. The intermediate lever 63 has an opening 63a into which the boss 5a on the upper surface of the cartridge chamber 5 is inserted, and a connecting pin 6 on the upper surface.
4, a link lever 66 having a thin metal plate brush 65 attached to the lower surface thereof, a pressing lever 67 for rotating the light shielding cover 28 to the closed position, and a winding lever formed around the opening 63a. It comprises a cam 68 and a rewind cam 69.

One end of an engagement lever 71 slidably attached to the side surface of the cartridge chamber 5 is engaged with the connection pin 64 of the linkage lever 66. The engagement lever 71 constitutes a cartridge chamber lid opening / closing mechanism, and is a plate member having an L-shaped cross section.
c is inserted into the hole 71a at the center and is swingable. At both ends of the engagement lever 71, a bifurcated linking portion 72 that engages with the connection pin 64 of the intermediate lever 63,
As shown in FIG. 4, an engaging portion 73 that engages with the hook 10 of the cartridge chamber lid 8 is formed, and a cutout portion with which the operating member 15 engages is provided between the linking portion 72 and the engaging portion 73. 7
4 are provided. The engagement lever 71 is urged by a coil spring 75 in a direction in which the engagement portion 73 is engaged with the hook 10.

An engagement lever 71 is provided on the back of the operation member 15.
The pin 15a which engages with the notch 74 is integrally formed. Since the engagement lever 71 is urged by the coil spring 75, the pin 15a is normally pushed by the notch 74, and the operation member 15 is located below in the slit 2a.

When the cartridge chamber cover 8 is opened, the operation member 15 is slid upward as shown in FIG. Then, the pin 15a of the operation member 15 moves upward, presses the notch 74, and rotates the engagement lever 71 against the bias of the coil spring 75. Thereby, the engagement between the engagement portion 73 of the engagement lever 71 and the hook 10 of the cartridge chamber lid 8 is released. The engaging portion 7 of the engaging lever 71
On the side of 3, an elastic portion 7 which comes into contact with and presses the hook 10 is pressed.
7, the hook 10 by the engaging portion 73 is provided.
Is released, the cartridge chamber lid 8 is slightly opened.

The brush 65 attached to the lower surface of the link lever 66 contacts a printed circuit board (not shown) attached to the upper surface of the cartridge chamber 5. A plurality of contacts that contact the brush 65 are formed on the printed circuit board, and the brush 65 and the contacts constitute a lever position detection sensor 79 that detects the rotational position of the intermediate lever 63. Thus, the open / close state of the cartridge chamber lid 8 can be detected from the position of the intermediate lever 63.

As shown in FIG. 16, when the light shielding cover 28 of the film cartridge 4 is open, the pressing lever 67 of the intermediate lever 63 faces the cam 56 of the light shielding lid driving member 53. Therefore, when the cartridge chamber lid 8 is opened by the opening operation of the operation member 15, the pressing lever 67 presses the cam 56, and the light shielding cover driving member 53 is rotated toward the closed position of the light shielding lid 28. I do.
Thus, when the cartridge chamber lid 8 is opened, the light shielding lid 2 is opened.
Since the photo film 8 is securely closed, the photo film 6 is not exposed to light.

In the vicinity of the drive gear 41, a winding lock mechanism and a rewind lock mechanism are incorporated. The hoisting lock mechanism includes an urging gear 80, a hoisting lock member 81, and a lever member 8 incorporated therebetween.
And 2. The urging gear 80, the winding lock member 81, and the lever member 82 form a support shaft 83.
It is supported rotatably.

The urging gear 80 is a rotating member that is driven and rotated by meshing with the drive gear 41. A pin 80a that contacts the lever member 82 is integrally formed on the lower surface of the urging gear 80.
The winding-up lock member 81 has a substantially disk shape, and is formed with a protruding lock portion 81a, a notch-shaped rotation permitting portion 81b, and a protrusion-shaped restricting piece 81c on the outer peripheral surface. Winding lock member 81 on the upper surface of cartridge chamber 5
At the part to which is attached, there are provided regulating pins 85a and 85b which contact the regulating piece 81c and regulate the rotation range of the lock member 81 for winding up.

The urging gear 80 and the winding lock member 81
Is transmitted between the pin 80a and the pin 80a of the biasing gear 80.
And the lever member 82. Lever member 8
Reference numeral 2 includes a cylindrical press-fitting portion 82a press-fitted into the hole of the winding lock member 81, and a lever portion 82b integrally formed above the press-fitting portion 82a and in contact with the pin 80a.

When the urging gear 80 rotates, the pin 80a comes into contact with the lever portion 82b, and the lever member 82 is pushed by the pin 80a and rotates together with the urging gear 80. At this time, the winding lock member 8 into which the lever member 82 is press-fitted.
1 also rotates together with the lever member 82. During this rotation,
When the restriction piece 81c of the lock member 81 for advancing contacts one of the restriction pins 85a, 85b, the lever member 82 slips with respect to the lock member 81 for the hoist,
The rotation continues with the urging gear 80. As a result, while the urging gear 80 is rotating in one direction, the winding-up lock member 81 is held at a fixed position.

FIG. 17 and A2-B2-C2-D of FIG.
As shown in FIG. 18 which is a cross-sectional view of a main part on line 2-E2, when the restricting piece 81c is in contact with the restricting pin 85a, the lock portion 81a of the lock member 81 for winding is used to raise the cam of the intermediate lever 63. It faces the part 68. The lock portion 81a enters the rotation locus of the intermediate lever 63 by facing the winding cam portion 68 of the intermediate lever 63, and prevents the rotation, that is, the opening of the cartridge chamber lid 8.
In addition, as shown in FIG.
b, the rotation allowing portion 81b faces the hoisting cam portion 68 of the intermediate lever 63. In this case,
The rotation locus of the intermediate lever 63 is released, and the opening of the cartridge chamber lid 8 is allowed.

The rewind lock mechanism has substantially the same configuration as the rewind lock mechanism, and includes an urging gear 87, a lever member 88, a rewind lock member 89, and a torsion spring 90. ing. These urging gears 87,
The lever member 88, the rewinding lock member 89, and the torsion spring 90 are rotatably supported by the support shaft 91.

The urging gear 87 is a rotating member that rotates while meshing with the transmission gear 42. The rewinding lock member 89 has a substantially disk shape, and has a lock portion 89 protruding from the outer peripheral surface.
a, a notch-shaped rotation permitting portion 89b, and a protrusion-shaped regulating piece 89c. In the portion on the upper surface of the cartridge chamber 5 where the rewinding lock member 89 is attached,
Restriction pins 93a and 93b are provided to abut on the restriction piece 89c and restrict the rotation range of the rewinding lock member 89.

The urging gear 87 and the rewinding lock member 89
The transmission of the rotational force between the rewinding lock member 89
This is performed by a pin 89d erected on the upper surface of the lever and the lever member 88. The lever member 88 is rotated by a disc-shaped elastic portion 88a fitted into a concave portion 87a formed on the lower surface of the urging gear 87 and frictionally coupled thereto, a lever portion 88b abutting on a pin 89d, and a rewind lock member 89. And a shaft 88c freely inserted.

When the urging gear 87 rotates, the lever member 88
Rotate together, and rotate the lever 88 b with the pin 89 during the rotation.
d, and the rewinding lock member 89 is rotated together. During this rotation, the regulating piece 89c of the rewinding lock member 89 is moved to one of the regulating pins 93a, 93b.
, The lever member 88 slips with respect to the urging gear 87, and only the urging gear 87 continues to rotate. As a result, while the urging gear 87 is rotating in one direction, the rewinding lock member 89 is held at a fixed position.

As shown in FIG. 16, when the regulating piece 89c is in contact with the regulating pin 93b, the lock 89a of the rewind lock member 89 faces the rewind cam 69 of the intermediate lever 63. The locking portion 89a includes the intermediate lever 63
When the intermediate lever 63 faces the rewind cam portion 69, the intermediate lever 63 enters the rotation locus and prevents the rotation, that is, the opening of the cartridge chamber lid 8. Further, as shown in FIG. 17, in a state where the regulating piece 89c is in contact with the regulating pin 93a, the rotation permitting portion 89b faces the rewind cam portion 69 of the intermediate lever 63, and the rotation locus of the intermediate lever 63 is changed. Open to allow the cartridge chamber lid 8 to open.

One end of the torsion spring 90 serving as a release spring is hung on a pin 95 on the upper surface of the cartridge chamber 5, and the other end is hung on a regulating piece 89 c of a rewinding lock member 89. Accordingly, the rewinding lock member 89 is urged in a direction in which the regulating piece 89c contacts the regulating pin 93a, that is, a direction in which the rotation of the intermediate lever 63 is allowed.
Note that, as a release spring that biases the rewinding lock member 89 in a direction that allows the rotation of the intermediate lever 63, a tension force or a compression force of a coil spring may be used in addition to a torsion spring. Alternatively, a release spring may be provided by providing a leaf spring-like elastic piece on the rewinding lock member 89.

The range in which the drive gear 41 can be rotated when the film cartridge 4 is taken out of the camera 2 is such that the display contents of the use state display mechanism of the cartridge main body 25 do not change. Therefore, release of the rewinding lock mechanism at the time of taking out the film cartridge 4 must be performed only by a slight rotation of the drive gear 41 in the film winding direction. The torsion spring 90
This is used to solve this problem, and at the same time when the urging gear 87 rotates in the winding direction, the rewinding lock member 8
9 is rotated in the winding direction, and before the rotation of the drive gear 41 is transmitted to the spool driving member 45, the lock of the rewind lock mechanism is released.

When the rotation direction of the drive gear 41 is switched from the film winding direction to the film rewinding direction, the intermediate lever 63 by the winding lock mechanism is used.
Almost simultaneously with the release of the lock, the locking of the intermediate lever 63 by the rewind lock mechanism is started. Therefore, when the rotation direction of the feed motor 44 is switched, the cartridge chamber lid 8 is not opened.

As shown in FIGS. 10 and 19, the rotation of the intermediate lever 63 is permitted only by the rotation permitting portion 81b of the lock member 81 for winding up and the lock member 89 for rewinding.
This is only when the rotation permitting portion 89b faces the intermediate lever 63. At this time, since the rotation of the intermediate lever 63 is allowed, the cartridge chamber lid 8 can be opened. When the cartridge chamber lid 8 is opened, the cam lever 56 of the light shielding lid driving member 53
A notch 56b is provided in order to avoid interference with No. 7.

As shown in FIG. 19, the cartridge chamber lid 8
Is open, the outer peripheral surface of the intermediate lever 63 abuts against the rotation allowing portion 81b of the winding lock member 81 and the rotation allowing portion 89b of the rewind lock member 89,
Winding-up lock member 81 and rewinding lock member 89
And rotation is prevented. Therefore, even if the spool driving member 45 is rotated by the rotation of the driving gear 41, the winding-up lock member 81 and the rewinding lock member 89 do not rotate, so that the intermediate lever 63, the winding-up lock member 81, and the rewinding The spool driving member 45 can be rotated to the initial position without changing the positional relationship with the lock member 89.

As shown in FIG. 9, a perforation sensor 98 for detecting the perforations 36a and 36b formed on the side edges of the photographic film 6 is provided in the transport path of the photographic film 6. The perforation sensor 98 includes, for example, a light source that emits infrared light, and a light receiving unit that outputs a photoelectric signal according to the intensity of incident light. The photoelectric signal from the perforation sensor 98 is sent to the microcomputer 99 after being binarized by a signal conversion circuit (not shown). The binarization is performed when the perforation sensor 98 detects the perforation 36.
a and 36b are set to the L level,
At other times, the signal is at the H level.

The encode signal generator 101 is in close contact with the photographic film 6, and has a roller that rotates as the photographic film 6 moves in the feeding direction, and a slit that rotates with the roller and has a fixed pitch radially. It comprises a photo-interrupter 103 comprising an encoding plate 102 and a light projecting unit and a light receiving unit provided so as to sandwich the encoding plate 102. Then, an encode pulse is generated each time the photo film 6 is fed for a predetermined length. This pulse signal is input to the microcomputer 99. The microcomputer 99 controls the film feeding mechanism to correct the positional deviation of the frame based on the pulse signal, measures the feeding length of the photographic film 6, and the like.

In the figure, a magnetic head 105 is supported on the left side of the encode signal generator 101 so as to be in contact with a magnetic recording section 38 formed on the side edge of the photographic film 6. The magnetic head 105 is driven by a head driver 106, and magnetically records various information output from the microcomputer 99 in a magnetic recording unit of a corresponding frame of the photographic film 6 in a binary code while the film is being wound. That is, when the exposure is completed, binary codes corresponding to various data such as exposure control data, print number data, and title data are sent from the microcomputer 99 to the head driver 1.
06. The head driver 106 drives the magnetic head 105 based on the binary code. For example,
Based on the encode pulse signal, the film feed speed during magnetic recording is calculated by the microcomputer 99, and the magnetic head 10 is driven at a timing corresponding to the feed speed.
5 is driven. As a result, the length of each bit magnetically recorded on the magnetic recording section 38 of the photographic film 6 is made constant.

The magnetic head 105 was mounted on the photographic film 6.
The magnetic recording unit 38 is supported so as to be able to contact / retract freely, and is brought into contact with the photographic film 6 only when necessary for magnetic recording, magnetic erasure, etc., and is evacuated from the photographic film 6 in other cases. Good.

The microcomputer 99 controls the driving of the feed motor 44 by the motor driver 108. As the feeding motor 44, for example, a DC motor is used. An encoding plate having slits formed at a constant pitch is provided on the rotation axis of the DC motor. By monitoring the passage of the slits of the encoding plate with a photo interrupter or the like, the rotation amount of the feeding motor is detected. You.
Note that a pulse motor may be used as the feeding motor. In this case, the encoder plate is unnecessary, and the rotation amount is controlled by counting the drive pulses. The feed motor 44 is incorporated in the winding shaft 47 as described above, and drives the spool 26 of the film cartridge 4 and the winding shaft 47 via the drive transmission mechanism 46.

The microcomputer 99 is connected to the MR switch 22 and the setting switches 19 to 21. Further, the microcomputer 99 is connected to a program ROM 110 storing a control program, a data ROM 111 storing various control data, a RAM 112 for temporarily storing various data obtained during control, and the like.

Next, the operation of the above embodiment will be described. FIGS. 10 and 11 show a film feeding mechanism in an initial state in which the film cartridge 4 is not loaded and the cartridge chamber lid 8 is closed, and a safety lock mechanism. In this state, the light-shielding lid driving member 53 is located at a position corresponding to the closed position of the light-shielding lid 28, and the winding-up lock member 81 and the rewinding lock member 89 connect the respective rotation permitting portions 81 b and 89 b to the intermediate lever 63. Face to face. Thereby, the intermediate lever 63 is rotatable.

As shown in FIG. 14, the cartridge chamber lid 8
Is closed, the engagement portion 7 of the engagement lever 71 is closed.
3 is engaged with the hook 10 of the cartridge chamber lid 8 by the bias of the coil spring 75, and the operation member 15 is located below the slit 2a. When the operation member 15 is slid upward, as shown in FIG. 15, the engagement lever 71 swings against the bias of the coil spring 75, and the engagement between the engagement portion 73 and the hook 10 is released. You. Further, when the hook 10 is pressed by the elastic portion 77, the cartridge chamber lid 8 is pressed in the opening direction, and the cartridge chamber 5 is opened.

The swing of the engagement lever 71 is controlled by the intermediate lever 6.
3, the intermediate lever 63 rotates clockwise as shown in FIG. At this time, the outer periphery of the intermediate lever 63 comes into contact with the rotation permitting portions 81b, 89b of the winding-up lock member 81 and the rewinding locking member 89, and the winding-up locking member 81 and the rewinding locking member due to vibration, impact, or the like. Unnecessary rotation of 89 is prevented. Further, the pressing lever portion 67 of the intermediate lever 63 enters the notch portion 56b of the cam portion 56 of the light shielding lid driving member 53, and the light shielding lid driving member 5
3 is prevented from rotating to the open position.

As shown in FIG. 1, after opening the cartridge chamber cover 8, the film cartridge 4 is loaded into the cartridge chamber 5. An engagement shaft 45a provided integrally with the spool drive member 45 is engaged with the engagement hole 26a of the spool 26, and is provided integrally with the light shield cover drive member 53 in the engagement hole 28a of the light shield lid 28. The engaged shafts 55 engage with each other. Since the engagement plate 62 incorporated in the engagement shaft 45a is elastically deformed and enters the engagement shaft 45a, the orientation of the spool 26 of the loaded film cartridge 4 is changed to the direction of the engagement shaft 4a.
Even if the direction is different from that of FIG.
a.

When the film cartridge 4 is loaded in the cartridge chamber 5, the cartridge detection switch is turned on,
This detection signal is input to the computer 99. Next, when the cartridge chamber lid 8 is closed, the hook 10 of the cartridge chamber lid 8 and the engagement portion 73 of the engagement lever 71 are engaged, and the cartridge chamber lid 8 is locked at the closed position.

At the same time as the cartridge chamber lid 8 is locked at the closed position, the intermediate lever 63 rotates to the position shown in FIG. A lever position detection sensor 79 composed of the brush 65 and the printed circuit board detects that the intermediate lever 63 is at the closed position, and inputs this detection signal to the computer 99. When a detection signal is input from the cartridge detection switch and the lever position detection sensor 79, the computer 99 specifies that the loading process has been completed without delay, and starts executing various processes for photographing preparation.

The first processing performed after loading is film data reading and DEP processing (use state detection processing). This DEP process is performed while driving the film feeding mechanism in the film rewinding direction. The computer 99 controls the feed motor 44 via the motor driver 108.
Is rotated in the rewind direction. The rotation of the feed motor 44 is transmitted to a drive transmission mechanism 46. Drive transmission mechanism 46
Reduces the rotation speed of the feed motor 44 by a plurality of gears. The planetary gear unit included in the drive transmission mechanism 46 transmits the rotation of the feed motor 44 only to the transmission gear 42.

In FIG. 10, the transmission gear 42 rotates clockwise, and the rotation of the transmission gear 42 is transmitted to the drive gear 41. The drive gear 41 rotates counterclockwise on the spool drive member 45, and causes the projection 41b to abut on the engaged projection 50a during the rotation. Thereby, the driving gear 41
, The spool drive member 45 starts rotating.

When the spool driving member 45 rotates in the film rewinding direction, as shown in FIGS. 12 and 13, the light-shielding lid driving gear 52 meshes with the gear portion 57 of the light-shielding lid driving member 53, and Is rotated toward the open position of the light shielding cover 28. The light-shielding cover driving member 53 rotated halfway by the light-shielding cover driving gear 52 rotates to the open position by the bias of the coil spring 60 and is held at this position.
As a result, the light shielding cover 28 of the film cartridge 4 is opened.

While the spool 26 is being rotated in the rewind direction, the bar code reader 54 reads the bar code on the data disk 30 that rotates together with the spool 26. The computer 99 specifies the type, the number of shots, the sensitivity, and the like of the photo film 6 from the bar code read by the bar code reader. The data disk 30
The stop position of the spool 26 at the time of loading is calculated from the position at the time of loading, and the display content of the use state display mechanism is specified from the stop position of the spool 26. Data obtained by the DEP process is stored in the RAM 112 or the like, and is used for controlling the photographing process.

During the DEP process, the transmission gear 4
2 is transmitted to the urging gear 80 and the urging gear 87. The urging gear 80 during the DEP process rotates clockwise in FIG. A pin 80a provided on the lower surface of the urging gear 80 during rotation of the urging gear 80
And the lever member 82 is rotated together. Further, since the lever member 82 is frictionally connected to the lower winding lock member 81, the winding lock member 81 also rotates together in the same direction.
The further rotation of the winding-up lock member 81, which has been rotated clockwise, is prevented by the restriction piece 81c abutting on the restriction pin 85b. However, since the lever member 82 slips with respect to the winding lock member 81, the urging gear 80 continues to rotate and holds the winding lock member 81 at a fixed position.

The urging gear 87 meshes directly with the transmission gear 42, and rotates counterclockwise in FIG. 12 during the DEP process. When the urging gear 87 rotates counterclockwise, the lever member 88 frictionally coupled to the urging gear 87 rotates together. During this rotation, the lever portion 88 b of the lever member 88 is moved by the rewinding lock member 8.
9 and is brought into contact with the pin 89d to rotate the rewinding lock member 89 together. The rewinding lock member 89 rotated in the counterclockwise direction is prevented from rotating further when the regulating piece 89c contacts the regulating pin 93b. However, since the lever member 88 slips with respect to the urging gear 87, the urging gear 87 continues to rotate and holds the rewinding lock member 89 at a fixed position.

As described above, in the safety lock mechanism during the DEP process, that is, during the film rewinding process, the winding-up lock member 81 causes the rotation permitting portion 81b to face the winding-up cam portion 68 of the intermediate lever 63, thereby making the intermediate lever 63 intermediate. The rewinding lock member 8 allows the rotation of the lever 63 and
Reference numeral 9 indicates that the lock portion 89b faces the rewinding cam portion 69 of the intermediate lever 63 to prevent the rotation of the intermediate lever 63. As a result, the intermediate lever 63 does not rotate during the DEP process, so that the cartridge chamber lid 8 is not opened carelessly.

When the display content of the use state display mechanism of the loaded film cartridge 4 is "unused" or "in the middle of photographing", an FFS process described later is performed. When the displayed content is "photographed" or "developed", the spool 26 is stopped so that the display plate 31 faces the display opening 33c indicating the photographed. As will be described later in detail, the lock of the safety lock mechanism is released, and the film cartridge 4 can be taken out of the cartridge chamber 5. At the time of misloading, the LCD 18
In addition to displaying an error message, a buzzer sound or the like may be sounded.

In the FFS (first frame set) process, the film feeding mechanism is driven in the film winding direction. The computer 99 rotates the feed motor 44 in the winding direction via the motor driver 108. The rotation of the feed motor 44 is transmitted to a drive transmission mechanism 46. The drive transmission mechanism 46 reduces the rotation speed of the feed motor 44 by a plurality of gears. The drive transmission mechanism 46
Transmit the rotation of the feed motor 44 to the transmission gear 42 and the hoisting shaft 47.

The transmission gear 42 rotates the driving gear 41 clockwise. During this rotation, the projection 41b comes into contact with the engaged projection 50a, and the rotation of the drive gear 41 is transmitted to the spool drive member 45. When the spool driving member 45 rotates in the film winding direction, the spool 26 of the film cartridge 4 rotates in the film winding direction, and sends out the photographic film 6 from the film entrance 25a of the cartridge body 25 by the action of the built-in film feeding mechanism.

The photographic film 6 sent out from the cartridge main body 25 passes through the film passage, and the perforation sensor 98 detects the leading perforation 37 on the way. This perforation 3
7 is detected from the cartridge body 25 by the photo film 6.
Is used to determine whether or not has been sent normally. Therefore, if the perforation 37 is not detected within a certain time from the start of the FFS processing,
The computer 99 determines that the photographic film 6 has not been normally sent out due to some defect on the film cartridge 4 or the camera side, and the computer 99 rotates the feed motor 44 in the rewinding direction to wind the photographic film 6 into the cartridge body 25. return. Thereafter, the use state display mechanism is set according to the use state obtained by the DEP process, and the lock of the safety lock mechanism is released. At this time, L
It is preferable to display an error on the CD 18 or sound a buzzer or the like.

The leading end of the photographic film 6 sent out is wound around a winding shaft 47. Then, the winding shaft 47
The photo film 6 is wound up by the rotation of. The film winding speed by the winding shaft 47 is slightly higher than the film sending speed by the spool driving member 45. Therefore, Photo Film 6
Is pulled by the winding shaft 47. However, the drive transmission mechanism 46 has a built-in clutch mechanism for slipping the spool drive member 45, so that there is no adverse effect on the photographic film 6. Thereafter, the head of the unused frame of the photo film 6 is set at the shooting position in accordance with the use state obtained by the DEP processing.

During the FFS processing, the urging gear 80 rotates counterclockwise, and the urging gear 87 rotates clockwise. When the urging gear 80 rotates counterclockwise, the pin 80a abuts on the lever portion 82b of the lever member 82 during the rotation, and rotates the lever member 82 together. Further, the hoisting lock member 81 to which the lever member 82 is frictionally coupled also rotates together in the same direction. The lock member 81 for winding that has been rotated in the counterclockwise direction is
Abuts on the regulating pin 85a, thereby preventing further rotation. However, since the lever member 82 slips with respect to the winding lock member 81, the urging gear 8
0 keeps rotating as it is, and holds the winding lock member 81 at a fixed position.

As shown in FIG. 17, the winding lock member 81 at the time of the FFS processing has the lock portion 81a facing the winding cam portion 68 of the intermediate lever 63 and the intermediate lever 6
8 is prevented from rotating. This prevents the cartridge chamber cover 8 from being erroneously opened during the FFS processing.

The urging gear 87 at the time of the FFS process rotates clockwise. When the urging gear 87 rotates clockwise, the lever member 88 frictionally coupled to the urging gear 87 rotates together. At the time of switching from the DEP process to the FFS process, that is, at the time of switching from the film rewinding direction to the winding up direction, the urging by the urging gear 87 is released and the rewinding is performed by the urging of the torsion spring 90. The locking member 89 rotates clockwise, and stops at a position where the restriction piece 89c contacts the restriction pin 93a.
In this state, the rewinding lock member 89 causes the rotation allowing portion 89b to face the rewinding cam portion 68 of the intermediate lever 63.

After the completion of the FFS processing, the camera 2 enters a standby state in which preparation for photographing is completed. The user checks the subject by looking through the viewfinder, and presses the shutter button 23 after the framing is completed. Thus, a shutter release is performed by a shutter unit (not shown). When the shutter release is completed, a one-frame winding process is performed. In this one-frame winding process, the feed motor 44 rotates in the winding direction, rotates the winding shaft 47 of the film chamber in the film winding direction, and winds one frame of the photographic film 6 into the film chamber. At the time of this winding, the magnetic head 105 driven by the head driver 106 causes the photographic film 6 to move.
The imaging data is magnetically recorded in the magnetic recording unit 38 of the. When the next unphotographed frame is set in the aperture, the feed motor 44 stops.

At the time of the one-frame winding process after the photographing,
Following the FFS processing, the winding lock member 81 prevents the rotation of the intermediate lever 63, so that the cartridge chamber lid 8 is not opened.

Photographic film 6 of film cartridge 4
Is completed, or when the MR switch 22 is operated, the film rewinding process is executed. In this film rewinding process, the microcomputer 99 rotates the feed motor 44 in the rewinding direction. As a result, similarly to the case of the DEP process, the rewinding lock member 89 prevents the rotation of the intermediate lever 63, thereby preventing the cartridge chamber lid 8 from being erroneously opened during rewinding.

After the rewinding process, the VEI (use state display set) process is performed while continuously rotating the feed motor 44 in the rewinding direction. VE after shooting all frames
In the I process, the spool 26 is stopped so that the display plate 31 faces the display opening 33c, and the VEI
In the process, the spool 26 is stopped so that the display plate 31 faces the display opening 33b. The stop control of the spool 26 is performed based on the detection signal from the bar code reader 54 and the rotation amount of the feed motor 44. Even during this VEI processing, the rewinding lock member 89 prevents the rotation of the intermediate lever 63, so that the cartridge chamber lid 8 is not accidentally opened.

After the VEI processing, a safety lock release processing is performed. In this process, the rotation of the feed motor 44 is switched to the film winding direction to
The drive gear 41 is rotated in the hoisting direction to such an extent that b does not abut on the engaged projection 50a, that is, the spool drive member 45 does not start rotating.

When the drive gear 41 rotates in the winding direction, the urging by the urging gear 87 is released, and at the same time, the rewinding lock member 89 is urged by the urging of the torsion spring 90.
Rotates clockwise, and stops at the position where the restriction piece 89c contacts the restriction pin 93a. In this state, the rewinding lock member 89 causes the rotation allowing portion 89b to face the rewinding cam portion 68 of the intermediate lever 63, and allows the rotation of the intermediate lever 63. Further, the winding-up lock member 81 does not move to the position where the intermediate lever 41 is locked even if the drive gear 41 is slightly rotated, since there is play in the rotation transmission between the winding-up lock member 81 and the urging gear 80. When the safety lock release processing ends, the rotation of the feed motor is stopped.

Further, the holding plate 48 fixed to the top plate 61
Is disposed between the driving gear 41 and the spool driving member 45 so that the driving gear 41 and the spool driving member 45
Is provided so as not to come into contact with the portion other than the engaging projection 41b and the engaged projection 50a.
, The spool drive member 45 does not rotate. Thereby, the film cartridge 4
The lock of the safety lock mechanism can be released without changing the display contents of the use state display mechanism.

Since the spool driving member 45 is pressed against the boss 5a on the upper surface of the cartridge chamber 5 by the urging force from the bent portion 48a of the pressing plate 48, the film cartridge 4 is taken out in the unlocked state. Even when the camera 2 is carried around, the spool drive member 45 does not rotate carelessly due to vibration or impact, so that the display content of the use state of the film cartridge 4 does not change. .

As shown in FIG. 15, when the operation member 15 is slid upward, the engagement lever 71 swings, the engagement between the engagement portion 73 and the hook 10 is released, and the cartridge chamber lid 8 is moved. Is released. Further, as shown in FIG. 19, the intermediate lever 63 is rotated by the swing of the engagement lever 71, and the pressing lever portion 67 of the intermediate lever 63 is rotated during the rotation.
Presses the protrusion 56a of the cam portion 56 of the light shielding lid driving member 53, and rotates the light shielding lid driving member 53 toward the closed position of the light shielding lid 28. As a result, the film entrance 25a of the film cartridge 4 is light-tightly closed by the light shielding cover 28.

When the cartridge chamber lid 8 is opened, the film cartridge 4 is pushed out of the cartridge chamber 5 by the eject mechanism 12. Thus, the film cartridge 4 can be easily taken out of the cartridge chamber 5.

In the above example, the spool position is specified and the spool stop position is controlled by reading the data disk of the film cartridge with a bar code reader. However, a dedicated sensor for detecting the spool position is used. May be provided, and the stop position of the spool may be controlled by this sensor.

In the above example, the spool drive member and the drive gear are coaxially arranged, and the drive gear is provided on the top plate and the spool drive member is provided on the cartridge chamber so as to be rotatable. For example, a drive gear may be arranged along with the spool drive member on the upper surface of the cartridge chamber. In this case, for example, by changing the height of each boss that rotatably supports the spool drive member and the drive gear, both are prevented from contacting each other at a portion other than the engagement portion and the engaged portion. It is good to

[0103]

As described above, according to the present invention, a drive gear that rotates forward when the film is wound up and rotates backward when the film is unwound by driving the feed motor, and that the drive gear rotates in the forward or reverse direction. A spool driving member that engages with a drive gear by rotating by a fixed angle of less than one rotation, and rotates in the same direction with the drive gear to drive a spool of a film cartridge in a film winding direction or a film rewinding direction; After the rewinding is completed, the feed motor is continuously rotated in reverse, the display plate rotating together with the spool in the film cartridge is set at a position corresponding to the use state of the photo film, and after the setting is completed, the reverse rotation of the feed motor is stopped. A use state setting mechanism, and a cartridge storage chamber during normal rotation and reverse rotation of the spool driving member. A lock mechanism that locks the lid, switches the rotation direction of the drive gear from the reverse rotation direction to the forward rotation direction, and rotates the drive gear forward by less than the predetermined angle to stop, thereby unlocking the lid. In the camera, the drive gear and the spool drive member are individually rotatably held, and the drive gear and the spool drive member are kept in a non-contact state while the drive gear rotates by the predetermined angle. The lock of the cartridge chamber lid can be released without changing the usage state display of the cartridge.

A spool driving member is coaxially arranged below the driving gear, a bottom surface of the driving gear is held by a pressing plate fixed to the camera body, and a spool is formed by a boss formed on an upper surface of an outer wall of the cartridge accommodating chamber. Since the bottom surface of the driving member is held, the configuration is simple.

Further, since a part of the pressing plate is bent downward and its tip is pressed against the upper surface of the spool driving member, it is possible to prevent the spool driving member from rotating carelessly due to vibration or impact. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of a camera embodying the present invention as viewed from a bottom surface side.

FIG. 2 is a rear view of the camera.

FIG. 3 is a plan view of the film cartridge.

FIG. 4 is a sectional view of a main part showing an open / close state of a light shielding cover.

FIG. 5 is a diagram showing a data disc of the film cartridge and an enlarged perspective view showing an end face on which the data disc is provided.

FIG. 6 is an enlarged perspective view showing an end face of the film cartridge on a use state display mechanism side.

FIG. 7 is an exploded perspective view showing a configuration of a film feeding mechanism and a safety lock mechanism.

FIG. 8 is a sectional view showing an arrangement of a drive gear and a spool drive member.

FIG. 9 is a block diagram illustrating an electrical configuration of the camera.

FIG. 10 is a plan view showing an initial state of the safety lock mechanism.

FIG. 11 is a sectional view of a main part of FIG. 9;

FIG. 12 is a plan view showing the state of the safety lock mechanism at the start of the DEP process.

FIG. 13 is a sectional view of a main part of FIG.

FIG. 14 is a side view showing a configuration of a cartridge chamber lid opening / closing mechanism in a locked state.

FIG. 15 is a side view illustrating a configuration of a cartridge chamber lid opening / closing mechanism in a released state.

FIG. 16 is a plan view showing the state of the safety lock mechanism at the end of the DEP process.

FIG. 17 is a plan view showing the state of the safety lock mechanism at the end of the FFS processing.

18 is a sectional view of a main part of FIG.

FIG. 19 is a plan view showing an initial state of the safety lock mechanism when the lid of the cartridge chamber is opened.

FIG. 20 is a diagram showing an arrangement of a conventional spool driving member and a driving gear.

[Explanation of symbols]

 2 Camera 4 Film cartridge 5 Cartridge chamber 6 Photo film 8 Cartridge chamber lid 26 Spool 28 Light shielding lid 41 Drive gear 41b Engagement projection 42 Transmission gear 44 Feed motor 45 Spool drive member 48 Pressing plate 48a Bend 50a Engagement projection 63 Intermediate lever 71 Engagement lever 81 Winding-up lock member 82 Winding-up lever member 88 Rewinding lever member 89 Rewinding lock member

Claims (3)

[Claims] 1. A drive gear that rotates forward when a film is wound up and reversely rotates when a film is unwound by driving a feed motor, and that the drive gear rotates a fixed angle of less than one rotation in each of a forward rotation direction and a reverse rotation direction. A spool drive member that engages with the drive gear and rotates in the same direction with the drive gear to drive the spool of the film cartridge in the film winding direction or the film rewinding direction, and continuously rotates the feed motor after the film rewinding is completed. Setting a display plate that rotates integrally with the spool in the film cartridge at a position corresponding to the use state of the photo film, and stopping the reverse rotation of the feed motor after the setting is completed; and the spool driving member. During normal rotation and reverse rotation of the cartridge, the lid of the cartridge storage A camera having a lock mechanism for switching the rotation direction of the gear from the reverse rotation direction to the normal rotation direction and rotating the drive gear forward by less than the predetermined angle to stop the lid, thereby unlocking the lid. A camera wherein a spool drive member is individually rotatably held, and the drive gear and the spool drive member are kept in a non-contact state while the drive gear rotates by the predetermined angle. 2. A spool driving member is coaxially arranged below the driving gear, the driving gear has a bottom surface held by a pressing plate fixed to a camera body, and the spool driving member is formed on an upper surface of an outer wall of a cartridge storage chamber. 2. The camera according to claim 1, wherein a bottom surface of the camera is held by the bent boss. 3. The camera according to claim 2, wherein a part of said holding plate is bent downward, and a tip portion thereof is pressed against an upper surface of a spool driving member.