JP2001100301A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a cartridge chamber cover from being opened by mistake in the midst of film feeding processing. SOLUTION: A lock lever 71 holding the cartridge chamber cover at a close position by engaging one end thereof with the hook 10 of the cartridge chamber cover is constituted so that the other end thereof is engaged with an intermediate lever 63 fitted to the upper surface of a cartridge chamber 5. A lock mechanism for winding up consisting of a pressing gear 80, a lever member 82 and a lock member for winding up 81 is constituted so as to lock the cartridge chamber cover by obstructing the turning of the lever 63, that means, the rocking of the lever 71 at a film winding-up time. Besides, a lock mechanism for rewinding consisting of a pressing gear 87, a lever member 88, a lock member for rewinding 89 and a torsion spring 90 is constituted so as to lock the cartridge chamber cover by obstructing the turning of the lever 63, that means, the rocking of the lever 71 at a film rewinding time.

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.

[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. This film cartridge incorporates a film delivery mechanism for delivering a photographic film from the film doorway by rotation of a spool, and a light-shielding lid for opening and closing the film doorway.

The IX240 type film cartridge incorporates a use state display mechanism for displaying the use state of the stored photographic film. The use state display mechanism includes four openings having different shapes formed in the end face of the cartridge body, and a display plate which rotates integrally with the spool behind the openings. 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. The setting of the use state display of the use state display mechanism is performed by controlling the stop position of the spool by rotating the spool in the film rewinding direction after the entire photographic film has been rewound into the cartridge body.

On the other hand, various cameras using an IX240 type film cartridge are also sold. This camera has a cartridge chamber for storing a film cartridge, a cartridge chamber lid for opening and closing the cartridge chamber, a cartridge chamber lid opening and closing mechanism for opening and closing the cartridge chamber lid, and a safety mechanism for locking the cartridge chamber lid opening and closing mechanism. A lock mechanism. Further, a film feeding mechanism for feeding a photographic film by rotating a spool of a cartridge main body accommodated in the cartridge chamber, and a light shielding lid opening / closing mechanism for opening and closing a light shielding lid of the cartridge main body are provided.

[0005] Japanese Utility Model Laid-Open No. 21634/1995,
JP-A-199305 and JP-A-5-232560 describe an example of the safety lock mechanism. The device described in Japanese Utility Model Application Laid-Open No. 21634/1990 frictionally engages a lock member with a rotating member having a different rotation direction between the time of film winding and the time of film rewinding, and locks the cartridge chamber cover opening / closing mechanism when the film is wound. The lock member is moved to the lock position, and when the film is rewound, the lock member is moved to the release position for releasing the lock. Further, the invention described in Japanese Patent Application Laid-Open No. 7-199305 detects that the photo film is pulled out of the cartridge body, and locks the cartridge chamber lid opening / closing mechanism in response to the detection of the photo film. Further, Japanese Patent Application Laid-Open
In the invention described in JP-A-232560, a lock member for locking the cartridge chamber lid opening / closing mechanism is driven using an electromagnet.

[0006]

However, the safety lock mechanism disclosed in Japanese Utility Model Application Laid-Open No. 2-21634 does not lock the cartridge chamber lid opening / closing mechanism when the film is unwound. The photographic film may be opened to expose the photographic film. There is also a problem that if the cartridge chamber cover is opened when the use state display of the use state display mechanism is set, an incorrect use state display is set.

Further, the safety lock mechanism described in Japanese Patent Application Laid-Open No. Hei 7-199305 can lock the cartridge chamber lid even when the film is unwound, but the mechanical interlocking mechanism becomes large and hinders miniaturization of the camera. There was a problem of doing. Also, when setting the usage status display,
Since the photo film is not detected outside the cartridge body, there is a problem that the cartridge chamber lid is opened.

Further, the safety lock mechanism described in Japanese Patent Application Laid-Open No. Hei 5-232560 requires a space for incorporating an electromagnet and an actuator, and has a problem that power consumption is large.

SUMMARY OF THE INVENTION The present invention is to solve the above-mentioned problem, and prevents the cartridge chamber lid from being erroneously opened during the film feeding process regardless of the film winding, rewinding, setting of a use state display mechanism, and the like. An object of the present invention is to provide a safety lock mechanism.

[0010]

In order to solve the above-mentioned problems, a camera according to the present invention holds a cartridge chamber lid opening / closing mechanism in a locked state after a predetermined amount of driving from the start of winding-up driving of a film feeding mechanism. A winding lock mechanism that allows switching of the cartridge chamber cover opening / closing mechanism to the released state after a predetermined amount of driving from the start of the rewinding drive of the film feeding mechanism, and after a predetermined amount of driving from the start of the rewinding drive of the film feeding mechanism. A rewind lock mechanism that holds the cartridge chamber lid opening / closing mechanism in a locked state, and that allows the switching of the cartridge chamber lid opening / closing mechanism to the released state at the same time that the film feeding mechanism starts to wind up, is provided. When the film cartridge is taken out, the film is lifted to the extent that the winding lock mechanism does not hold the cartridge chamber lid opening / closing mechanism in the locked state. By driving wind the arm feeding mechanism,
The winding lock mechanism and the rewinding lock mechanism are simultaneously released.

The wind-up lock mechanism and the rewind lock mechanism rotate in conjunction with the film feeding mechanism.
A rotating member whose rotation direction differs between when the film is wound up and when the film is unwound, and interlocks with the rotation of the rotating member in one direction to enter the movement trajectory of a component of the cartridge chamber lid opening / closing mechanism, and the cartridge chamber lid. A lock position for preventing switching of the opening / closing mechanism to the released state, and withdrawing from the movement locus of the components of the cartridge chamber lid opening / closing mechanism in conjunction with the rotation of the rotating member in the other direction, and releasing the cartridge chamber lid opening / closing mechanism. And a lock member that is movable between an unlocked position that allows switching to the state.

Further, the interlock between the rotating member and the lock member is
This is performed by engaging the engaging portion provided on one side and the engaged portion provided on the other side in the rotation direction of the rotating member,
A play is provided until the engaging portion and the engaged portion engage.

The rewinding lock mechanism includes an opening spring for urging the lock member toward the unlocked position.

Further, the film feeding mechanism incorporates a delay transmission mechanism that transmits the rotation of the feeding motor to the spool with a delay immediately after the rotation direction is switched.

Further, the delay transmission mechanism does not transmit the rotation of the feed motor when the film rewinding lock mechanism is released to the spool when the film cartridge is taken out after the film rewinding is completed.

[0016]

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 the 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. In a normal state in which 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.

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 behind 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: The barcode of the data disk 30 is exposed through an opening 25b formed on one end surface of the cartridge body 25, and is read by a barcode reader incorporated in a device such as a camera.

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.

As shown in FIG. 3, the photographic film 6 includes
A plurality of photographing frames 35a to 35end are continuously formed, and the rear end thereof is locked on the spool 26 of the cartridge body 25. On one side edge of the photo film 6,
Perforations 36a and 36b indicating the front end position and the rear end position of each photographing frame 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.

FIG. 7 is an exploded perspective view showing the structure of a cartridge chamber cover opening / closing mechanism and a safety lock mechanism for locking the same. FIG. 8 is a block diagram showing the electrical structure of the camera. FIG. 10 is a plan view when the cartridge chamber lid opening / closing mechanism and the safety lock mechanism are in an initial state, and FIG. 10 is a cross-sectional view taken along the line ABCDEF of FIG.

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 attached to the upper surface of the cartridge chamber 5, and the drive gear 41 is supported by a spool drive member 45. 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 engagement shaft 45a that engages with the spool 26 of the film cartridge 4 is formed integrally with the spool drive member 45. The engagement shaft 45a is inserted into a hole formed in the boss 5a on the upper surface of the cartridge chamber 5, and is inserted into the cartridge chamber 5. Protrude.

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 interlocks with the switching of 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 is provided with a plurality of teeth on its outer periphery. A disk-shaped gear holding portion 49 is formed on the upper portion of the spool drive member 45, and a ring-shaped support ridge 50 is integrally formed on the upper portion thereof. The inner diameter portion 41a of the drive gear 41 is
It is fitted on the outer periphery of the supporting ridge 50 and is rotatably supported. An engagement protrusion 41 b protruding inward is formed integrally with the inner diameter portion 41 a of the drive gear 41, and the outer periphery of the support protrusion 50 of the spool drive member 45 is provided with the drive gear 41. An engaged projection 50a with which the engagement projection 41b contacts is formed.

The engagement projection 41b and the engaged projection 50a constitute a delay transmission mechanism. The rotation of the drive gear 41 is applied to the spool drive 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 rotation of the drive gear 41 is transmitted to the spool drive member 45 with a delay.

A brush 48 made of a thin disk-shaped metal plate is attached to the upper part of the spool driving member 45. On the lower surface of the top plate 61, a printed board 51 on which a contact with which the brush 48 contacts is formed is attached. The contact of the printed circuit board 51 and the brush 48 constitute a spool position detection switch 54 for detecting the rotational position of the spool driving member 45. This spool position detection switch 54
Is a process for detecting the use state of the film cartridge 4 (DE
This is used to set the spool 25 to the initial position when performing the P process, or to obtain the stop position of the spool 26 during the use status display setting process (VEI process) for setting the use status display mechanism.

Below the gear holding portion 49 of the spool drive member 45, there is integrally provided a light shielding cover drive gear 52 composed of several teeth provided on the outer periphery. The light-shielding cover driving gear 52 performs film data reading and use state detection processing (DE) performed immediately after the film cartridge 4 is loaded.
At the time of the P process, the light shielding cover 28 is rotated from the closed position to the open position.

The light-shielding-lid driving member 53 includes an engagement shaft 55 that engages with the engagement hole 28 a of the light-shielding lid 28, a cam portion 56 integrally formed on the upper portion of 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. 11 and A1 in FIG.
When the spool drive shaft 45 rotates in the film rewinding direction during the DEP process as shown in FIG. 12 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.

A pin-shaped spring hook 59 is formed integrally with the upper portion of the gear 57. 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. 12, 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. 3, 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.

On the back surface of the operation member 15, an engagement lever 71 is provided.
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 opening the cartridge chamber cover 8, 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 switch 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. 15, when the light-shielding lid 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 driving gear 41. A pin 80a that comes into contact with the lever member 82 is integrally formed on the lower surface thereof.
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. 16 and A2-B2-C2-D of FIG.
As shown in FIG. 17 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-up uses the winding 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.
Further, 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 structure 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 meshes with the transmission gear 42 and rotates. 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. 15, when the regulating piece 89c is in contact with the regulating pin 93b, the lock portion 89a of the rewinding lock member 89 faces the rewinding cam portion 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. 16, when the regulating piece 89c is in contact with the regulating pin 93b, 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 the pin 95 on the upper surface of the cartridge chamber 5, and the other end is hung on the regulating piece 89 c of the 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 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, unlike the conventional safety lock mechanism, the cartridge chamber lid 8 is not opened when the rotation direction of the feed motor 44 is switched.

As shown in FIGS. 9 and 18, the rotation of the intermediate lever 63 is permitted only when the lock member 8 for winding up is used.
This is only when the first rotation allowing portion 81b and the rotation allowing portion 89b of the rewinding lock member 89 face 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 has a pressing lever 67 of the intermediate lever 63.
A notch 56b is provided in order to avoid interference.

As shown in FIG. 18, the state in which the engagement shaft 45a of the spool driving member 45 is in a position corresponding to the photographed state of the use state display mechanism is referred to as the spool driving member 45.
Is set to be the initial position. Therefore, when the photo film 6 is rewound halfway, the spool driving member 45 at the time of taking out the film cartridge 4 is in a state in which the use state display mechanism is in the middle of photographing. Therefore, it is necessary to rotate the spool driving member 45 to the initial position after the film cartridge is taken out and before a new film cartridge is loaded. The rotation of the spool driving member 45 to the initial position is performed when the film cartridge 4 is taken out from the cartridge chamber 5 and the cartridge chamber cover 8 is opened.

As shown in FIG. 18, 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. 8, 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 which rotates as the photographic film 6 moves in the feeding direction, and a slit having a constant pitch formed radially by rotating with the roller. 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 a 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 drive of the feed motor 44 by the motor driver 108. 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. 9 and 10 show a film feeding mechanism and a safety lock mechanism in an initial state in which the film cartridge 4 is not loaded and the cartridge chamber lid 8 is closed. 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, the spool driving member 45 is located at the position corresponding to the photographed state of the use state display mechanism, and the winding lock member 81 and the rewinding member. The lock member 89 has the rotation permitting portions 81 b and 89 b facing the intermediate lever 63. Thereby, the intermediate lever 63 is rotatable.

As shown in FIG. 13, 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. 14, 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, and 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 cam 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 cam 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 the DEP processing (film data reading and 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. 9, 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 spool drive member 45 starts rotating together with the drive gear 41.

When the spool driving member 45 rotates in the film rewinding direction, as shown in FIGS. 11 and 12, the light shielding cover 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 28 is being rotated in the rewinding direction, a bar code reader attached to the upper part of the cartridge chamber 5 of the camera 2 reads the bar code of the data disk 30 that rotates together with the spool 28. 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. Further, the stop position of the spool 28 at the time of loading is calculated from the notch position of the data disk 30, and the display content of the use state display mechanism is specified from the stop position of the spool 28. 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. During the rotation of the urging gear 80, a pin 80a provided on the lower surface of the urging gear 80 contacts the lever portion 82b of the lever member 82, and rotates the lever member 82 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. 9 during the DEP process. When the urging gear 87 rotates counterclockwise,
The lever member 88 frictionally connected to the urging gear 87 rotates together. During this rotation, the lever portion 88b of the lever member 88 contacts the pin 89b of the rewinding lock member 89, and rotates 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 rotation permitting portion 81b of the winding lock member 81 is opposed to the winding cam portion 68 of the intermediate lever 63, and the intermediate lever is rotated. 63 is allowed to rotate, and the rewinding lock member 89 is used.
The lock portion 89b faces the rewind 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
May be displayed, or a buzzer may sound.

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 drive gear 41 clockwise on the spool drive member 45. 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 the film outlet 25 of the cartridge body 25 is acted on by the action of the built-in film sending mechanism.
Send out the photo film 6 from a.

The photographic film 6 sent out from the cartridge body 25 passes through the film path, 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. 16, the winding-up lock member 81 at the time of the FFS processing has the lock portion 81a facing the winding-up cam portion 68 of the intermediate lever 63, and
8 is prevented from rotating. This prevents the cartridge chamber cover 8 from being erroneously opened during the FFS processing.

The urging gear 87 rotates clockwise during the FFS processing. 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 the camera 2 is ready for shooting. 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 winding, the photographic film 6 is moved by the magnetic head 105 driven by the head driver 106.
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, a VEI (use state display set) process is performed while 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 can be accurately performed by the spool position detection sensor 54 including the brush 48 and the printed circuit board 51.
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 feed motor 44 is rotated in the film winding direction, and the drive gear 41 is wound up to such an extent that the engagement projection 41b does not come into contact with the engagement projection 50a, that is, the spool drive member 45 does not start rotating. Rotate in the direction.

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 because there is play in the rotation transmission between the winding-up lock member 81 and the urging gear 80. Thus, the lock of the safety lock mechanism can be released without changing the display content of the use state display mechanism of the film cartridge 4.

As shown in FIG. 14, 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. Also, as shown in FIG. 18, the intermediate lever 63 is rotated by the swing of the engagement lever 71, and the pressing lever 67
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 embodiment, a camera loaded with an IX240 type film cartridge has been described as an example. However, the present invention can be applied to a camera loaded with a photographic film of another format such as 135 type.

[0099]

As described above, according to the camera of the present invention, the winding lock mechanism for locking the cartridge chamber lid when the film is wound up, and the rewinding lock mechanism for locking the cartridge chamber lid when the film is unwound. With this arrangement, the lid of the cartridge chamber can be locked in all processes in which the photographic film is fed, so that exposure of the photographic film due to erroneous opening of the lid of the cartridge chamber can be prevented.

Since the winding lock mechanism and the rewinding lock mechanism operate using the film feeding mechanism as a driving source, a dedicated motor or an actuator is not required, and the size and power consumption of the camera can be reduced. it can.

Further, a play is provided between the rotating member and the lock member, a spring for biasing the lock member toward the unlock position is provided, or a delay transmission for transmitting the rotation of the feed motor to the spool with a delay. Since the mechanism is provided, the lock of the safety lock mechanism can be released without changing the display contents of the use state display mechanism of the film cartridge.

[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 / closed state of a light shielding cover.

FIG. 5 is an enlarged perspective view showing an end face of the film cartridge on the data disk side.

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 block diagram illustrating an electrical configuration of the camera.

FIG. 9 is a plan view showing an initial state of the safety lock mechanism.

FIG. 10 is a sectional view of a main part of FIG. 9;

FIG. 11 is a plan view showing a state of the safety lock mechanism at the start of the DEP process.

FIG. 12 is a sectional view of a main part of FIG. 11;

FIG. 13 is a side view showing a configuration of a cartridge chamber lid opening / closing mechanism in a locked state.

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

FIG. 15 is a plan view showing a state of the safety lock mechanism at the end of the DEP process.

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

FIG. 17 is a sectional view of a main part of FIG. 16;

FIG. 18 is a plan view showing an initial state of the safety lock mechanism when the lid of the cartridge chamber is opened.

[Explanation of symbols]

 2 Camera 4 Film Cartridge 5 Cartridge Chamber 6 Photographic Film 8 Cartridge Chamber Cover 15 Operating Member 25 Cartridge Body 26 Spool 28 Shading Lid 41 Drive Gear 42 Transmission Gear 44 Feed Motor 45 Spool Driving Member 53 Light Shading Lid Driving Member 63 Intermediate Lever 71 Lever 80 Winding urging gear 81 Winding lock member 82 Winding lever member 87 Rewind urging gear 88 Rewind lever member 89 Rewind lock member 90 Torsion spring

Claims (6)

[Claims] 1. A cartridge chamber for accommodating a film cartridge, a cartridge chamber lid for opening and closing the cartridge chamber, a locking state for locking the cartridge chamber lid at a closed position, and a locking state according to an opening operation. A camera provided with a cartridge chamber lid opening / closing mechanism that can be switched between a release state and a release state, and a film feed mechanism that transmits rotation of a feed motor to a spool of a film cartridge to wind and rewind a photographic film. The cartridge chamber lid opening / closing mechanism is held in a locked state after a predetermined amount of driving from the start of winding-up driving of the film feeding mechanism, and the cartridge chamber lid opening / closing mechanism is driven after a predetermined amount of driving from the start of rewinding driving of the film feeding mechanism. And a winding-up lock mechanism that allows switching to the release state of the A film rewinding lock mechanism that holds the cartridge chamber lid opening / closing mechanism in a locked state after driving the amount, and allows switching of the cartridge chamber lid opening / closing mechanism to the release state when the film feeding mechanism starts to wind up. When the film cartridge is taken out after completion of rewinding, the film feeding mechanism is wound up and driven to the extent that the winding lock mechanism does not hold the cartridge chamber cover opening / closing mechanism in the locked state, and the winding lock mechanism and the rewind lock mechanism are simultaneously released. Camera. 2. A rotating member, wherein the winding lock mechanism and the rewinding lock mechanism rotate in conjunction with a film feeding mechanism, and rotate in different directions between when the film is wound up and when the film is unwound. A lock position for preventing the switching of the cartridge chamber cover opening / closing mechanism to the release state by entering into the movement locus of the component of the cartridge chamber cover opening / closing mechanism in conjunction with the rotation of the rotating member in one direction, and the other direction of the rotating member. The lock is retracted from the movement trajectory of the components of the cartridge chamber lid opening / closing mechanism in conjunction with the rotation of the cartridge chamber lid, and is movable between an unlocked position that allows the cartridge chamber lid lid opening / closing mechanism to be switched to the released state. The camera according to claim 1, comprising: a member; 3. The interlocking operation between the rotating member and the lock member,
This is performed by engaging the engaging portion provided on one side and the engaged portion provided on the other side in the rotation direction of the rotating member,
3. The camera according to claim 2, wherein a play is provided before the engaging portion and the engaged portion engage. 4. The rewinding lock mechanism includes a release spring that urges the lock member toward a lock release position when the film feeding mechanism starts to wind up. Or the camera of 3. 5. The film feeding mechanism according to claim 1, further comprising a delay transmission mechanism for transmitting the rotation of the feed motor to the spool with a delay immediately after the switching of the rotation direction. 4. The camera according to any one of 4. 6. The system according to claim 5, wherein the delay transmission mechanism does not transmit the rotation of the feed motor when the film rewinding lock mechanism is released to the spool when the film cartridge is taken out after the film rewinding is completed. Camera.