JP2001222056A - Cartridge chamber cover locking device for camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a film cartridge easily taken out from a cartridge chamber without disassembling a camera even in the case where a failure of the camera is caused, and also to prevent a cartridge chamber cover from being opened because of inadvertent operation of an operation member in the case where the film cartridge has been loaded. SOLUTION: This device is constituted by having a locking member to lock the cartridge chamber cover to close the cartridge chamber in a closed state, the operation member to set the cartridge chamber cover in an open state by resisting locking force by the locking means, holding means 21, 22 and 23 to hold the state in which the opening operation of the cartridge chamber cover by the operation member is made infeasible and the locked state of the cartridge chamber cover by the locking means, first holding release means 26a and 26b to release holding by the holding means and a second holding release means 26c to release the holding by the holding means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cartridge chamber lid locking device for a camera, which can be set to a state in which the cartridge chamber lid can be opened and operable or not.

[0002]

2. Description of the Related Art Conventionally, a lock device for a cartridge chamber lid has been disclosed in Japanese Patent Application Laid-Open Nos. Hei 6-258699 and Hei 7-2.
No. 70897 and the like.

The locking device described in the above-mentioned Japanese Patent Application Laid-Open No. 6-258699 uses a power for a photographing lens barrel to move a lock member in accordance with movement of a constituent part of the photographing lens barrel, and to move the lock member to a lock position. It is configured to be set at any one of the lock release positions.

The lock device described in Japanese Patent Application Laid-Open No. 7-27097 uses the power of a dedicated motor for opening and closing the cartridge chamber lid to open and close the cartridge chamber lid. When you slide
The lock between the stop lever that rotates following the opening / closing knob and the cartridge chamber lid is released, and the switch is switched following the opening / closing knob, and the motor is driven to open the cartridge chamber lid. The operation is performed. Then, when the camera cannot operate at all due to battery exhaustion, by operating the stop lever from the outside, the stop lever and the cartridge chamber lid are locked, and
The reduction gear for reducing the rotation of the motor is disengaged from the gear formed on the cartridge chamber lid, and the cartridge chamber lid can be manually opened and closed.

[0005]

However, in the case of the lock device disclosed in Japanese Patent Laid-Open No. Hei 6-258699, the lock and unlock of the cartridge chamber lid is performed in a part of the retracted area of the taking lens barrel. If the shooting lens barrel is extended when the film cartridge is not loaded,
In this state, the cartridge chamber lid is locked, and the film cartridge cannot be loaded into the cartridge chamber. Therefore, in order to load the film cartridge, the photographing lens barrel must be temporarily retracted to the retracted area. And the operation was very troublesome. Also, when removing the film cartridge from the failed camera,
There is a problem that it is necessary to disassemble the camera, which is troublesome.

In the lock device disclosed in Japanese Patent Application Laid-Open No. Hei 7-27097, there is no lock member for locking the opening / closing knob. Therefore, even when the film cartridge is loaded in the cartridge chamber, the switching of the opening / closing knob causes the cartridge chamber to change. There was a problem that the lid opened.

(Aim of the Invention) A first object of the present invention is to allow a film cartridge to be easily taken out of a cartridge chamber without disassembling the camera even when the camera breaks down, and to be loaded with a film cartridge. An object of the present invention is to provide a cartridge chamber lid locking device for a camera, which can prevent the operation member from being carelessly operated to open the cartridge chamber lid.

A second object of the present invention is to provide a malfunction of a drive source for a lens barrel, a breakage of a mechanism for transmitting the power of the drive source to the lens barrel, and a failure of wiring to the drive source. Accordingly, an object of the present invention is to provide a camera-chamber lid lock device capable of easily taking out a film cartridge from a cartridge chamber without disassembling the camera even if the camera breaks down.

A third object of the present invention is to cause a camera to malfunction due to malfunction of a driving source for film feeding, damage to a film feeding mechanism using power of the driving source, and occurrence of faulty wiring to the driving source. Even in such a case, it is an object of the present invention to provide a camera cartridge lid cover locking device capable of easily taking out a film cartridge from a cartridge chamber without disassembling the camera.

A fourth object of the present invention is to provide a camera cartridge chamber lid locking device which does not require a dedicated second holding / releasing means and can achieve a complicated structure and high cost. Things.

A fifth object of the present invention is to provide a camera cartridge lid lock device which can effectively utilize a space which was a dead space sandwiched between a cartridge chamber and a lens barrel unit, and can prevent an increase in size. What you want to do.

A sixth object of the present invention is to provide a camera-cartridge-chamber lid locking device which can easily take out a film cartridge from a failed camera cartridge-chamber without deteriorating the design. It is.

A seventh object of the present invention is to lock a cartridge chamber lid of a camera which can prevent a second holding / unlocking means from being inadvertently operated by closing a hole formed in an exterior component. It is intended to provide a device.

[0014]

In order to achieve the first object, according to the first aspect of the present invention, there is provided a locking means for locking a cartridge chamber cover for closing a cartridge chamber in a closed state, and the locking means. An operating member for opening the cartridge chamber lid against the locking force of the locking means, a state in which the opening operation of the cartridge chamber lid by the operating member is disabled, and a setting of the cartridge chamber lid by the locking means. Holding means for holding the locked state, first holding release means for releasing the holding by the holding means, and second holding releasing means for releasing the holding by the holding means when operated from outside And a locking device for a cartridge chamber lid of a camera.

Further, in order to achieve the second object,
According to a second aspect of the present invention, in the first aspect, the first holding releasing means is operated by transmitting the power for driving the lens barrel to release the holding by the holding means. It is a cartridge chamber lid locking device for a camera.

Further, in order to achieve the third object,
According to a third aspect of the present invention, the first holding releasing means is operated by transmitting the power for feeding the film to release the holding by the holding means.
A lock device for a cartridge chamber lid of a camera described in (1).

Further, in order to achieve the fourth object,
According to a fourth aspect of the present invention, the second holding release means is provided with the first holding release means.
4. A camera cartridge lid locking device according to claim 1, wherein said locking device is integrated with said holding release means.

Further, in order to achieve the fifth object,
According to a fifth aspect of the present invention, the second holding release means is disposed in a space sandwiched between the cartridge chamber and the lens barrel unit. It is assumed that.

In order to achieve the sixth object,
According to a sixth aspect of the present invention, the second holding release means is released through a hole formed in a protective cover covering the entire camera to release the holding by the holding means. 6. A lock device for a cartridge chamber lid of a camera according to any one of the above items (5) to (5).

In order to achieve the seventh object,
According to a seventh aspect of the present invention, there is provided a cartridge chamber lid locking device for a camera according to the sixth aspect, further comprising a protection plate for closing a hole of the protection cover.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on illustrated embodiments.

FIGS. 1 to 19 are views showing an embodiment of the present invention, and FIG. 1 is an exploded view showing constituent parts of a film feeding device, a light shielding door opening / closing device, a cartridge chamber lid locking device, and a cartridge discharging device. FIG. 2 is a perspective view of the film cartridge, FIG. 3 is an exploded perspective view showing a main unit configuration of the camera, FIG. 4 is a front view showing a state where the main unit of the camera is incorporated, and FIG. FIG. 6 is a cross-sectional view of FIG. 5A-A showing a second release lever state that can be operated from the outside, FIG. 7 is an exploded perspective view showing the configuration of a cover, and FIG. 9 is an exploded perspective view mainly showing the components of FIG. 9, FIG. 9 is a side view showing a holding state of the operation knob, and FIG. 10 is a sectional view taken along line BB of FIG.

First, the configuration of the film feeding device will be described.

The film feeding device winds and rewinds the film stored in the film cartridge.

1 and 2, reference numeral 1 denotes a camera main body, which is provided with a cartridge chamber 1a for accommodating a film cartridge 50 and a winding spool chamber 1b for winding the film in the film cartridge 50. Reference numeral 2 denotes a feeding motor, which is a film cartridge 5 containing a film winding, rewinding, and a film leader.
Film is taken up from the inside of the camera body 1
It is used as a drive source when sending out to b. This feed motor 2 has a pinion gear 3 press-fitted at the tip,
It is fixed to a motor base plate 5 described later by two screws 4. Reference numeral 5 denotes a motor base plate which holds the feed motor 2 and is fixed to the upper surface of the winding spool chamber 1b of the camera body 1 by two screws 6.

Reference numeral 7 denotes a hoisting gear in which a large gear 7a and a small gear (not shown) are integrally formed. When the large gear 7a meshes with the pinion gear 3, the driving force of the feeding motor 2 is transmitted. You. The hoisting gear 7 is rotatably fitted and supported on a gear shaft 5 a formed on the motor base plate 5, and is held on the motor base plate 5 by a hoisting gear pressing plate 8 described later. Reference numeral 8 denotes a hoisting gear holding plate which holds the hoisting gear 7 and is fixed to the motor base plate 5 by screws 9.

Reference numeral 10 denotes a sun gear in which a large gear 10a and a small gear 10b are integrally formed. The driving force of the feeding motor 2 is transmitted when the large gear 10a meshes with the small gear of the hoisting gear 7. You. The sun gear 10 is disposed above a planetary gear unit 11 described later, rotatably fitted and supported on a gear shaft 1 c formed on the camera body 1, and held on the camera body 1 by a hoisting gear pressing plate 8. Have been.

Reference numeral 11 denotes a planetary gear unit. The driving force of the feed motor 2 is transmitted when the planetary gear 11a rotatably fitted and supported meshes with the small gear 10b of the sun gear 10. The planetary gear unit 1 to which the driving force has been transmitted.
1 rotates clockwise around the gear shaft 1c of the camera body 1 so that the planetary gear 11a meshes with a gear 12a of a winding spool 12, which will be described later. Conversely, by rotating counterclockwise about the gear shaft 1c of the camera body 1, the camera body 1 meshes with a rewind gear 13 described later. And this planetary gear unit 11
Is disposed below the sun gear 10, is rotatably fitted and supported on the gear shaft 1 c of the camera body 1 like the sun gear 10, and is held on the camera body 1 by the hoisting gear pressing plate 8.

Reference numeral 12 denotes a take-up spool, which is disposed in the take-up spool chamber 1b of the camera body 1 and takes up the film stored in the film cartridge 50. The drive force of the feed motor 2 is transmitted to the hoisting spool 12 by engaging a gear 12a formed at an upper end with a planetary gear 11a of a planetary gear unit 11 that rotates clockwise. The take-up spool 12 is rotatably fitted and supported in holes 1d formed on the upper and lower surfaces of the take-up spool chamber 1b of the camera body 1, and is held by the camera body 1 by the motor base plate 5.

Reference numeral 13 denotes a first rewind gear, which meshes with the planetary gear 11a of the planetary gear unit 11 which rotates in the counterclockwise direction, so that the driving force of the feeding motor 2 is transmitted.
The first rewind gear 13 is rotatably fitted and supported on a gear shaft 1 f formed on the camera body 1, and is held on the camera body 1 by the motor base plate 5. Reference numeral 14 denotes a clutch gear unit, and gears 14a, 14b, 14
c, and a spring (not shown) arranged between the gears 14b and 14c. The gear 14a includes a rewind gear 13 and the gear 14
The driving force of the feed motor 2 is transmitted by meshing with the sun gear 10 and the gear 14c with the second rewind gear 15, respectively. And this clutch gear 14
One end is formed in a hole 1g formed in the camera body 1, and the other end is formed in a finder unit 46 described later (not shown).
Are rotatably fitted and supported.

Reference numeral 15 denotes a second rewind gear, 16 denotes a third rewind gear, and 17 denotes a fourth rewind gear in which a large gear 17a and a small gear 17b are integrally formed. The second rewind gear 15
Is the gear 14c of the clutch gear unit 14, and the third
The rewind gear 16 is connected to the second rewind gear 15 and the fourth
The small gear 17b of the rewind gear 17 is the third rewind gear 1
6 and 6 respectively, the driving force of the feed motor 2 is transmitted. The second rewind gear 15, the third rewind gear 16, and the fourth rewind gear 17 are rotatably fitted and supported on gear shafts 1h, 1i, 1j formed on the camera body 1, respectively. The second rewind gear 15 and the third rewind gear 16 are connected to a finder unit 46 described later with reference to FIG.
Accordingly, the fourth rewind gear 17 is held on the camera body 1 by a fork gear pressing plate 27 described later.

Reference numeral 18 denotes a fifth rewind gear. The driving force of the feed motor 2 is transmitted by meshing with the large gear 17a of the fourth rewind gear 17. The fifth rewind gear 18 is provided with a gear 20 of a light shielding door opening / closing gear 20 described later.
b, is rotatably fitted to and supported by a fitting shaft 20c formed coaxially with the rotation center axis of the light shielding door opening / closing gear 20, and is attached to the light shielding door opening / closing gear 20 by a fork gear pressing plate 27 described later. Is held.

Reference numeral 19 denotes a film cartridge 5 shown in FIG.
This is a fork gear for driving the zero spool 50a, and the driving force of the feeding motor 2 is transmitted by meshing with the fifth rewind gear 18. As the fork gear 19 to which the driving force is transmitted rotates clockwise, the film is sent from the film cartridge 50 to the winding spool chamber 1b of the camera body 1. Further, the film is rewound into the film cartridge 50 by rotating in the counterclockwise direction. The fork gear 19 is configured such that an engagement portion 19a extending downward has a cartridge chamber 1 of the camera body 1.
a is rotatably fitted and supported on the inner periphery of a cylindrical rib 1k formed on the upper surface, and is held on the camera body 1 by a fork gear pressing plate 27 described later. The engagement portion 19a of the fork gear 19 is provided on the cylindrical rib 1 of the camera body 1.
k, and penetrates the inner circumference of the cartridge body 1a of the camera body 1.
And the cartridge chamber 1 a of the camera body 1.
When the film cartridge 50 is loaded in the cartridge, it engages with the spool 50a of the film cartridge 50.

Numeral 27 denotes a fork gear pressing plate. The fixed claws 27d formed at two places are engaged with two fixed claws 1p formed at the upper surface of the cartridge chamber 1a of the camera body 1. , Fixed to the camera body 1.

Next, the structure of the light shielding door opening / closing device will be described.

The light-shielding door opening and closing device opens and closes the light-shielding door 50b of the film cartridge 50 and turns on and off the feeding motor 2 in conjunction with a cartridge chamber lid opening and closing device described later.

1 and 2, reference numeral 20 denotes a light-shielding door opening / closing gear, which opens and closes the light-shielding door 50b of the film cartridge 50 shown in FIG. This shading door opening / closing gear 2
0 is a hole 11 formed in the upper surface of the cartridge chamber 1a of the camera body 1 with a light-shielding door opening / closing shaft 20a extending downward,
Further, a fitting shaft 20c formed coaxially with the rotation center axis of the light shielding door opening / closing gear 20 is fitted to a hole 27a formed in the fork gear pressing plate 27, thereby being rotatably supported. I have. The light-shielding door opening / closing shaft 20a penetrates the hole 11 of the camera body 1 and protrudes into the cartridge chamber 1a of the camera body 1. When the film cartridge 50 is loaded in the cartridge chamber 1a of the camera body 1, The light-shielding door driving unit 50c of the film cartridge 50 is to be engaged. A gear 20b is formed at the center of the light-shielding door opening / closing gear 20, and meshes with a gear 21a of a drive ring 21 described later.

Reference numeral 21 denotes a drive ring, which rotates the light shielding door opening / closing gear 20. The drive ring 21 is rotatably fitted and supported on the outer periphery of a cylindrical rib 1 k formed on the upper surface of the cartridge chamber 1 a of the camera body 1, and is held by the camera body 1 by a fork gear 19. A gear 21a and a notch 2
1b and a drive shaft 21c are formed. The gear 21a
Meshes with the gear 20b of the light shielding door opening / closing gear 20,
The turning power of the drive ring 21 is transmitted to the light shielding door opening / closing gear 20. The notch 21b allows the lock claw 22a of the lock lever 22 to enter. The drive shaft 21c
Is fitted with a notch 34a of the opening / closing lever 34 described later.

Reference numeral 28 denotes a switch lever for switching a light-shielding door opening / closing switch 33, which will be described later. It is designed to rotate integrally with the gear 20. The switch lever 28 has a pressing portion 28a and a hook 28b. The pressing portion 28a presses a contact piece 33a of a light-shielding door open / close switch 33 described later, and
3 is turned on and off. In the hook 28b,
A light-shielding door opening / closing spring 30 described later is hung.

Reference numeral 30 denotes a light-shielding door opening / closing spring, which urges the light-shielding door 50b of the film cartridge 50 in an opening direction and a closing direction. One of the light-shielding door opening / closing springs 30 is connected to the SP shaft 27 e formed on the fork gear holding plate 27 and the other is connected to the hook 2 of the switch lever 28.
8b, respectively.

Reference numeral 33 denotes a light-shielding door opening / closing switch, and the light-shielding door opening / closing switch 33 is turned on and off in conjunction with the pressing portion 28a of the switch lever 28. When the light-shielding door open / close switch 33 is turned on, the feeding motor 2 is driven, and the leader of the film stored in the film cartridge 50 is sent out to the winding spool chamber 1b of the camera body 1. . This light shielding door open / close switch 33
Are two contact pieces 33a, 33b and two contact pieces 33a, 3
3b, is constituted by an insulating plate 33c arranged between
It is fixed to a fork gear holding plate 27.

Next, the configuration of the cartridge chamber lid locking device will be described.

The cartridge chamber lid locking device is provided in the cartridge chamber 1a of the camera body 1 with the film cartridge 5
When 0 is loaded, locking and unlocking of a cartridge chamber lid opening / closing device described later is performed.

In FIG. 1, reference numeral 22 denotes a lock lever, and when a film cartridge 50 is loaded in the cartridge chamber 1a of the camera body 1 and is in a shooting state,
The rotation of the drive ring 21 is prevented so that the operation knob 40 described later with reference to FIG. 8 is not rotated. The lock lever 22 is rotatably fitted and supported on a lever shaft 1 m formed on the upper surface of the cartridge chamber 1 a of the camera body 1, and is held on the camera body 1 by a fork gear pressing plate 27. The lock lever 22 has a lock claw 22a at the left end, a drive shaft 22b near the lock claw 22a, and a drive portion 22d at the tip of an arm 22c extending downward along the cartridge chamber 1a. An SP axis 22e is formed near the center. The lock claw 22a enters into the notch 21b of the drive ring 21 and prevents the rotation of the drive ring 21. The interlocking shaft 22b is in contact with a tapered surface 25c of a first release lever 25 described later, and rotates the first release lever 25. The driving section 22d is provided with a second release lever 26 shown in FIG.
, And follows the second release lever 26. A lock lever spring 23 is hung on the SP shaft 22e.

Reference numeral 23 denotes a lock lever spring which urges a lock claw 22a of the lock lever 22 in a direction to enter the notch 21b of the drive ring 21 (lock the drive ring 21). One of the lock lever springs 23 is a cartridge chamber 1 a of the camera body 1.
The other end is hung on the SP shaft 1n formed on the upper surface portion, and the other end is hung on the SP shaft 22e of the lock lever 22.

Reference numeral 25 denotes a first release lever, which rotates following the ejection lever 24 to rotate the lock lever 22 in a counterclockwise direction to release the lock of the drive ring 21. . The first release lever 25 is disposed below a discharge lever 24 described later, and is rotatably fitted and supported on a discharge shaft 24 a of the discharge lever 24. Also,
The first release lever 25 has a tapered surface 2 at the center.
5b, a tapered surface 25c is formed at the right end. The tapered surface 25b abuts on a tapered surface 24d of the discharge lever 24 described later, and follows the discharge lever 24. The tapered surface 25c restricts the rotation of the lock lever 22 by contacting the drive shaft 22b of the lock lever 22.

In FIG. 3, reference numeral 26 denotes a second release lever, which moves straight in the optical axis direction following a rectilinear guide plate 44c, which will be described later, thereby turning the lock lever 22 to rotate the drive ring 21. Locking and unlocking are performed. In addition, the lock lever 22 is rotated by making it operable from outside to unlock the drive ring 21. The second release lever 26 is slidably fitted and supported by two fitting shafts 44a formed on the upper surface of a lens barrel unit 44 described later, and as shown in FIG. Is disposed in a space which is a dead space between the cartridge chamber 1 a and the lens barrel unit 44, and is held by the camera body 1 and the finder unit 46. The second release lever 26 has
A pressing portion 26a is formed at the front, and a driving portion 26b is formed at the rear. The pressing portion 26a is in contact with the driving portion 22d of the lock lever 22, and the lock lever 22 is rotated counterclockwise by the second release lever 26 being retracted in the optical axis direction. The operation portion 26c is formed at a position extending from the pressing portion 26a, and is provided with a hole 42a of a cover 42 described later.
When the operation unit 26c is pushed from the outside in the direction of the arrow as shown in FIG. 6, the second release lever 26 is retracted in the optical axis direction, and the lock lever 22 is turned counterclockwise. Moving. The lock lever 22 is rotated counterclockwise. The drive section 26b is in contact with a rectilinear guide plate 44c described later, and follows the rectilinear guide plate 44c.

Next, the configuration of the cartridge discharging device will be described.

The cartridge discharging device discharges the film cartridge 50 from the cartridge chamber 1a and unlocks the cartridge chamber lid locking device.

In FIG. 1, reference numeral 24 denotes a discharge lever.
The film cartridge 50 moves up and down in conjunction with the film cartridge 50, discharges a fixed amount of the film cartridge 50 from the loading port of the cartridge chamber 1a, and rotates the first release lever 25. The discharge lever 24 is disposed above the first release lever 25, and a discharge shaft 24 a formed on the discharge lever 24 is connected to a hole 2 formed on the first release lever 25.
5a, a hole 1o formed on the upper surface of the cartridge chamber 1a of the camera body 1, and a hole 24b formed coaxially with the discharge shaft 24a are fitted with a fitting shaft 27b formed on the fork gear pressing plate 27. By being fitted, it is slidably supported. The discharge lever 24 has a discharge shaft 24a at the left end and a tapered surface 24d at the right end of the arm 24c.
Guide walls 24e are formed on both sides of the discharge shaft 24a. The discharge shaft 24a is provided with the hole 2 of the first release lever 25.
5a and through the hole 1 of the camera body 1 so as to protrude into the cartridge chamber 1a of the camera body 1 so as to come into contact with the film cartridge 50 loaded in the cartridge chamber 1a. . The tapered surface 24d is a tapered surface 25b of the first release lever 25.
, And the first release lever 25 is rotated by the vertical movement of the discharge lever 24. The guide wall 24e
Abuts on a guide shaft 27c formed near the fitting shaft 27b of the fork gear holding plate 27, and the discharge lever 2
4 is blocked.

Reference numeral 31 denotes a discharge lever spring which urges the discharge shaft 24a of the discharge lever 24 in a direction to protrude into the cartridge chamber 1a. The discharge lever spring 31 is fixed to the fork gear pressing plate 27 by a screw 32.

Next, the configuration of the cartridge chamber lid opening / closing device will be described.

The opening / closing device for the lid of the cartridge chamber opens and closes the lid of the cartridge chamber and opens and closes the opening / closing device of the light shielding door.

In FIGS. 8 to 10 and 16, reference numeral 34 denotes an opening / closing lever, which opens and closes a cartridge chamber cover 41, which will be described later, and rotates the drive ring 21. The opening / closing lever 34 is rotatably fitted to and supported by a lever shaft 1q formed on the side surface of the cartridge chamber 1a of the camera body 1, and is held by the camera body 1 by screws 35. The opening / closing lever 34 has a U-shaped notch 34a bent at the upper end, a notch 34b and a hook 34c substantially at the center, and a locking claw 34 at the lower end.
d is formed. The notch 34a is fitted with the drive shaft 21c of the drive ring 21, and the open / close lever 3
4 is transmitted to the drive ring 21. The notch 34b is provided with a drive shaft 40 of an operation knob 40 described later.
a, and follows the operation knob 40. An opening / closing lever spring 39 described later is hooked on the hook 34c. The locking claw 34d locks a locking claw 41a of the cartridge chamber lid 41 described later.

Reference numeral 36 denotes an opening / closing lever spring, and a pressing portion 36a formed at the tip portion has a notch 3 of the opening / closing lever 34.
4a, the drive shaft 21 of the drive ring 21
c, the drive ring 21 is rotated counterclockwise. The opening / closing lever spring 36 is fixed to the opening / closing lever 34 by a pin 37, and rotates integrally with the opening / closing lever 34. 38 is a locking lever,
The locking claw 34d of the opening / closing lever 34 holds a state in which the locking claw 41a of the cartridge chamber lid 41 described later is released. The locking lever 38 is fixed to the opening / closing lever 34, and rotates integrally with the opening / closing lever 34. The locking lever 38 has an arm 3
A locking claw 38b is formed at the tip of 8a so as to be engaged with a locking claw 1r formed on the side surface of the cartridge chamber 1a of the camera body 1.

Reference numeral 39 denotes an opening / closing lever spring which urges a locking claw 34d of the opening / closing lever 34 in a direction for locking a locking claw 41a of a cartridge chamber lid 41 described later. The opening / closing lever spring 39 has an SP shaft 1s formed on the side surface of the cartridge chamber 1a of the camera body 1,
The other is hooked on the hook 34c of the opening / closing lever 34, respectively.

Reference numeral 40 denotes an operation knob having an operation section 40a operated by a photographer.
When the camera is opened and closed, the opening / closing lever 34 operated by the photographer is rotated. This operation knob 40 is used to open / close the lever 34.
And the cartridge chamber 1a of the camera body 1.
9 and 10, are rotatably fitted to and supported by a strap shaft 1u formed on the side surface of the cover 42. As shown in FIGS.
43, the camera body 1 holds the camera. The operation knob 40 has a drive unit 40b at a position facing the operation unit 40a, and a rotation regulating groove 40 near the drive unit 40b.
c is formed. The opening / closing lever 34 is driven by the drive section 40b abutting on an end surface 34e in the cutout portion 34b of the opening / closing lever 34. The rotation restricting groove 40c is fitted to a rotation restricting shaft 1v formed near the strap shaft 1u of the camera body 1.

Reference numeral 41 denotes a cartridge chamber lid (see FIG. 16), which is disposed below the cartridge chamber 1a of the camera body 1 and holds the film cartridge 50 loaded in the cartridge chamber 1a.
Over the loading opening formed in the opening. The cartridge chamber lid 41 has pivoting shafts 41b formed on both sides of the cartridge chamber lid 41 rotatably supported by grooves (not shown) formed in the camera body 1, and covers 42, 43.
Are held by the camera body 1. A locking claw 41a is formed on the cartridge chamber lid 41 at a position facing the rotation shaft 41b (see FIGS. 18 and 19), and a projection 41c is formed on the opposite side of the locking claw 41a. The locking claw 4
1a is locked by a locking claw 34d of the opening / closing lever 34. The convex portion 41c releases the locking lever 38 locked by the locking claw 1r of the camera body 1.

Next, the main unit configuration of the camera will be described.

3 to 7, reference numeral 42 denotes a cover, which covers the entire camera body 1 and is fixed to the camera body 1 by screws (not shown). On the front surface of the cover 42, a hole 42a for externally operating the operation portion 26c of the second release lever 26, and an opening 42b larger than the outer diameter of the fixed barrel 44d of the lens barrel unit 44 are provided. ,
An opening 42c for the finder optical system 46a and the light receiving portion 46c of the finder unit 46 and an opening 42d for the light projecting portion 46b of the finder unit 46 are formed.

Reference numeral 44 denotes a lens barrel unit which moves to a photographing position, a first non-photographing position, and a second non-photographing position. In the first non-photographing position, a barrier device 44b provided in the lens barrel unit 44
Open and close. In the second non-photographing position, the lens barrel unit 44 is further retracted than in the first non-photographing position to unlock the drive ring 21. The lens barrel unit 44 moves a photographing optical system (not shown) in the optical axis direction by a driving device 44f including a motor 44e fixed to a fixed tube 44d and a reduction gear (not shown). In the lens barrel unit 44, there is provided a rectilinear guide plate 44c (see also FIG. 11 and the like) which can rectilinearly move in the optical axis direction for preventing rotation of the photographing optical system. , The second release lever 26 is moved. The lens barrel unit 44 is disposed in front of the camera body 1 and is fixed to the camera body 1 by four screws 45.

Reference numeral 46 denotes a finder unit, on both sides of a finder optical system 46a, a light projecting unit 46b and a light receiving unit 46c of a known focus distance measuring device are provided. The finder unit 46 is arranged on the upper surface of the lens barrel unit 44 and is fixed to the camera body 1 by three screws 47. Reference numeral 48 denotes a strobe light emitting unit which moves between a light emitting position and a storage position. The strobe light emitting unit 48 is disposed on the upper surface of the winding spool chamber 1b of the camera body 1, and is fixed to the camera body 1 by three screws 49.

A decorative plate 51 is fixed to the front surface of the cover 42. The decorative plate 51 covers the cover 42.
Hole 42a is closed. The decorative plate 51 has an opening 51a set to be larger than the outer diameter of the fixed barrel 44d of the lens barrel unit 44, and an opening 51b for the finder optical system 46a of the finder unit 46.

Next, the locking and opening / closing operations of the cartridge chamber cover will be described with reference to FIGS.

FIGS. 11 to 13 are top views showing the operation of the parts relating to the light shielding door opening / closing device, the cartridge chamber lid locking device, and the cartridge chamber lid opening / closing device.
FIG. 11 shows a state where the film cartridge 50 is loaded, the lens barrel unit 44 moves to the first non-photographing position, and the drive ring 21 is locked. FIG. 12 shows a state where the film cartridge 50 is loaded and the lens mirror is mounted. Cylinder unit 44
Move to the second non-photographing position and the lock of the drive ring 21 is released, and FIG. 13 shows the state where the film cartridge 50 is discharged. Also,
FIG. 14 is a sectional view taken along the line CC of FIG. 11 showing the relationship between the discharge lever 24 and the first release lever 25, and FIG.
FIG. 12 showing the relationship between 4 and the first release lever 25,
FIG. 12 is a cross-sectional view at a position corresponding to CC in FIG. 11. Also,
16 and 17 are side views showing an operation state of the cartridge opening / closing device. More specifically, FIG. 16 shows a state in which the cartridge chamber lid 41 is locked (locked), and FIG. 17 shows a state in which the cartridge chamber lid 41 is locked. Are released, respectively. 18 and 19 are perspective views showing operating states of the light-shielding door opening / closing device, the cartridge chamber lid locking device, the cartridge discharging device, and the cartridge chamber lid opening / closing device, respectively. 5
0 shows a state in which the film cartridge 50 is loaded in the cartridge chamber 1a, and FIG. 19 shows a state in which the film cartridge 50 is removed from the cartridge chamber 1a.

First, the case where the cartridge chamber cover 41 is opened will be described.

After the film has been rewound into the film cartridge 50, the use state of the film cartridge 50 (during or during photography) is set. After the setting is completed, the lens barrel unit 44 shown in FIG. 3 is retracted in the optical axis direction from the state of FIG. 11 and moves to the second non-photographing position. As the lens barrel unit 44 moves, the second release lever 26 follows the rectilinear guide plate 44c and moves in the direction indicated by the arrow X in FIG. 11 to fit the shaft 44a of the lens barrel unit 44 (see FIG. 3). ) Is used as a guide to move to the second non-photographing position (see FIG. 12), similarly to the lens barrel unit 44. In addition, due to the movement of the second release lever 26 in the direction of the arrow X, the lock lever 22 rotates counterclockwise around the lever shaft 1 m of the camera body 1 while charging the lock lever spring 23. By the rotation of the lock lever 22, the lock claw 22a of the lock lever 22, which has entered the cutout portion 21b of the drive ring 21 in FIG. 11, is retracted from the cutout portion 21b to be in an unlocked state. In this unlocked state, the operation knob 40 becomes rotatable.

The operation knob 40 that has become rotatable is moved to the position shown in FIG.
From the state of 6, the camera body 1 is rotated counterclockwise about the strap shaft 1u. The turning force of the operation knob 40 is transmitted to the end face 34e of the opening / closing lever 34 via the driving portion 40b of the operation knob 40, and the opening / closing lever 34 is moved from the state of FIG. It rotates counterclockwise similarly to the operation knob 40 while charging the opening / closing lever spring 39. This open / close lever 3
The turning power of No. 4 is transmitted to the drive shaft 21c of the drive ring 21 via the opening / closing lever spring 36 (see FIG. 12). As a result, the drive ring 21 starts to rotate clockwise around the rib 1k of the camera body 1, and this rotating power is transmitted to the gear 2 of the light shielding door opening / closing gear 20 via the gear 21a of the drive ring 21.
0b. The light-shielding door opening / closing gear 20 to which the rotational power has been transmitted is connected to the hole 11 of the camera body 1 and the fork gear holding plate
7 is rotated counterclockwise while charging the light shielding door opening / closing spring 30 around the hole 27a. With this rotation,
The light blocking door 50b of the film cartridge 50 is closed. At this time, the pressing portion 28a of the switch lever 28 that rotates integrally with the light shielding door opening / closing gear 20 separates from the tip of the contact 33a of the light shielding door opening / closing switch 33, so that the contact piece 33b
And the light-blocking door open / close switch 33 is turned on.

The rotation of the opening / closing lever 34 in the counterclockwise direction causes the locking of the cartridge chamber lid 41 locked by the locking claw 34d of the opening / closing lever 34, as shown in FIGS. The claw 41a is released. As a result, the cartridge chamber lid 41 can be opened, and the discharge lever 24 is moved by the spring force of the discharge lever spring 31 as shown in FIG.
From the state shown in FIG. 19, as shown in FIG. 19, the hole 1o of the camera body 1 and the fitting shaft 27b of the fork gear pressing plate 27 are moved downward by a guide. By the downward movement of the discharge lever 24, the film cartridge 50 is moved by the discharge shaft 24a of the discharge lever 24 to the cartridge chamber 1a of the camera body 1.
A part of the film cartridge 50 is discharged from the
Opens the cartridge chamber lid 41. By opening the cartridge chamber lid 41, the film cartridge 50 housed in the cartridge chamber 1a of the camera body 1 can be taken out.

At this time, as shown in FIG.
4, the taper surface 25b of the first release lever 25 is pushed by the taper surface 24d, and the first release lever 25 rotates clockwise, and the taper surface 25c of the first release lever 25 as shown in FIG. Abuts on the drive shaft 22b of the lock lever 22 to prevent the lock lever 22 from rotating.

As shown in FIG. 17, the locking claw 38b of the locking lever 38 is locked to the locking claw 1r of the camera body 1 as shown in FIG.
9 is kept charged.

Next, the operation for closing the cartridge chamber cover 41 in the state where the film cartridge 50 is loaded and in the state where the film cartridge 50 is not loaded will be described in different cases.

<When a film cartridge is loaded in the cartridge chamber and the lid of the cartridge chamber is closed> The film cartridge 5 is inserted into the cartridge chamber 1a of the camera body 1.
0 is loaded, and the cartridge chamber lid 41 is rotated clockwise. Due to the rotation of the cartridge chamber lid 41, the projection 41c of the cartridge chamber lid 41 is locked by the locking claw 1r of the camera body 1, and the locking claw 38b of the locking lever 38 is locked.
Cancel. With the release of the locking claw 38b, the opening / closing lever 34 is rotated clockwise around the lever shaft 1q of the camera body 1 by the spring force of the opening / closing lever spring 39 from the state shown in FIG. By the rotation of the opening / closing lever 34, as shown in FIG.
Is locked by the locking claw 34d of the opening / closing lever 34, the cartridge chamber lid 41 is closed, and the film cartridge 50 is held in the cartridge chamber 1a.

At this time, the cartridge chamber 1 of the camera body 1
The ejection shaft 24a of the ejection lever 24 is pushed by the film cartridge 50 loaded in the ejection lever 24a.
Is the camera body 1 while charging the discharge lever spring 31.
Using the hole 1o and the fitting shaft 27b of the fork gear presser plate 27 as a guide, it moves upward from the state of FIG. 19 to the state of FIG. The upward movement of the ejection lever 24 causes the tapered surface 24d of the ejection lever 24 and the first release lever 2 to move.
5 are separated from each other, and the first tapered surface 25b is separated as shown in FIG.
Is released.

The turning power of the opening / closing lever 34 is supplied to the driving portion 40b of the operating knob 40 via the end face 34e of the opening / closing lever 34 and the driving shaft of the driving ring 21 via the cutout portion 34a of the opening / closing lever 34. 21c. The operation knob 40 to which the rotational power has been transmitted moves the opening / closing lever 3 around the strap shaft 1u of the camera body 1 from the state of FIG.
It rotates clockwise in the same manner as 4. In addition, the drive ring 21
Rotates counterclockwise from the state shown in FIG. 13 around the rib 1k of the camera body 1 (see FIG. 12). The rotational power of the drive ring 21 is transmitted to the gear 20b of the light shielding door opening / closing gear 20 via the gear 21a of the drive ring 21. The light-shielding door opening / closing gear 20 to which the rotational power is transmitted rotates clockwise around the hole 11 of the camera body 1 and the hole 27a of the fork gear pressing plate 27 while charging the light-shielding door opening / closing spring 30. By this rotation, the film cartridge 50
Is opened. At this time, the light shielding door opening / closing gear 2
Pressing portion 28a of switch lever 28 that rotates integrally with zero
As a result, the tip of the contact piece 33a of the light-shielding door open / close switch 3 is pressed to be separated from the contact piece 33b to be turned off.
In response to the OFF state of the light shielding door opening / closing switch 33, the lens barrel unit 44 is controlled by a control circuit (not shown) through
From the state, and is moved to the first non-photographing position.

By the movement of the lens barrel unit 44, the straight guide plate 44c and the second release lever 26 are separated, and the second release lever 26 is in a free state. In this free state, the lock lever 22 rotates clockwise around the lever shaft 1m of the camera body 1 by the spring force of the lock lever spring 23 from the state shown in FIG. Due to the rotation of the lock lever 22, the lock claw 22a of the lock lever 22 enters into the notch 21b of the drive ring 21 as shown in FIG. 11, and the rotation of the drive ring 21 is prevented. The blocking of the rotation of the drive ring 21 prevents the rotation of the opening / closing lever 34 and the operation knob 40, so that the cartridge chamber cover 41 cannot be opened (locked).

The turning power of the lock lever 22 is transmitted to the first release lever 26a of the second release lever 26 via the drive portion 22d of the lock lever 22 and the first power via the drive shaft 22b of the lock lever 22. Tapered surface 2 of release lever 25
5c. The second release lever 26 to which the rotational power has been transmitted moves to the first non-photographing position following the lens barrel unit 44 with the fitting shaft 44a of the lens barrel unit 44 as a guide. Also, the first release lever 25
The discharge lever 24 rotates counterclockwise about the discharge shaft 24a. When the lens barrel unit 44 moves to the first non-photographing position, the feeding motor 2 is driven to read the use state of the film cartridge 50 and to send out the film from the film cartridge 50. It is wound on the first winding spool 12 and becomes ready for photographing.

<< Case where the lid of the cartridge chamber is closed without loading the film cartridge into the cartridge chamber >>
The difference from the case where the film cartridge 50 is loaded is that the film cartridge 50 is not loaded in the cartridge chamber 1a of the camera body 1, so that the ejection lever 24 is moved downward as shown in FIG. 50 remains discharged from the cartridge chamber 1a of the camera body 1. In this state, FIG.
5, the rotation of the first release lever 25 is prevented by the tapered surface 24d of the discharge lever 24, and the tapered surface 25c of the first release lever 25 is connected to the drive shaft 22b of the lock lever 22 as shown in FIG. Is in contact with the Since the rotation of the lock lever 22 is prevented by this abutted state, the lock claw 22a of the lock lever 22 cannot enter the notch 21b of the drive ring 21, that is, the lock state is released. I have.

Therefore, even if the lens barrel unit 44 is extended in the optical axis direction and moves to the first non-photographing position or the photographing position, the drive ring 21, the opening / closing lever 34 and the operation knob 40 can be rotated. And the cartridge chamber lid 4
The opening operation of No. 1 is enabled.

In the above state (the state where the film cartridge 50 is not loaded in the cartridge chamber 1a of the camera body 1 and the state where the lens barrel unit is moved to the first non-photographing position or the photographing position). When the film cartridge 50 is loaded in the cartridge chamber 1a,
The discharge shaft 24a of the discharge lever 24 is pressed by the film cartridge 50. The discharge lever 24 charges the discharge lever spring 31 and guides the hole 1o of the camera body 1 and the fitting shaft 27b of the fork gear presser 27 as guides, as shown in FIG. From the upper direction shown in FIG. This ejection lever 2
4 causes the taper surface 24d of the discharge lever 24 to move.
And the tapered surface 25b of the first release lever 25 is separated, the first release lever 25 is in a free state (see FIG. 14), and the rotation restriction of the lock lever 22 is released. With this release, the lock lever 22 is rotated clockwise around the lever shaft 1m of the camera body 1 by the spring force of the lock lever spring 23 from the state shown in FIG. By the rotation of the lock lever 22, the second release lever 26 is moved in the optical axis direction, and the lock claw 22 of the lock lever 22 is moved.
a is a cutout 2 of the drive ring 21 as shown in FIG.
1b, and the rotation of the drive ring 21 is prevented.
The blocking of the rotation of the drive ring 21 causes the opening / closing lever 34
In addition, the rotation of the operation knob 40 is prevented, and the opening operation of the cartridge chamber lid 41 is disabled (locked state).

Next, a case where the user unlocks the cartridge chamber lid 41 from outside and removes the film cartridge 50 from the cartridge chamber 1a will be described.

The lock is released by the lens barrel unit 4
This is performed when the camera breaks down due to malfunction of the motor 44e, breakage of a mechanism such as a reduction gear, disconnection of the flexible substrate, or the like.

When it is determined that the camera has failed, the decorative plate 51 is removed from the cover 42 as shown in FIG. 7, and the second release lever is removed from the hole 42a of the cover 42 by a thin rod or the like as shown in FIG. 26 is pressed in the direction of the arrow.
As a result of this operation force, the second release lever 26 retracts the fitting shaft 44a of the lens barrel unit 44 into the guide in the optical axis direction as shown in FIG. Subsequent operations are the same as in the case where the cartridge chamber lid 41 is opened, and a description thereof will be omitted.

According to the above embodiment, the operating portion 26c of the second release lever 26 is moved from the outside, specifically, through the hole 42a of the cover 42 with a thin rod or the like in the direction of the arrow in FIG. Since the cartridge lid 41 can be opened and made operable by pushing, even if the camera breaks down, the film cartridge 50 can be easily taken out of the cartridge chamber 1a. Further, when the cartridge chamber lid 41 is closed, a means (opening / closing lever 34, etc.) for maintaining the state is provided, so that the operation knob 40 is carelessly operated and the cartridge chamber lid is opened. 41 is not opened.

The second release lever 26 is linked to the movement of the lens barrel, that is, the output of the motor for driving the lens is used. Even if the camera breaks down due to breakage of a mechanism such as the above, breakage of the flexible board, etc., the film cartridge 50 can be reliably taken out of the cartridge chamber 1a by the above-mentioned operation from outside.

Further, since the operating portion 26c is formed integrally with the pressing portion 26a of the second release lever 26, the number of components can be reduced, which is advantageous in terms of space and cost. It will be.

Since the second release lever 26 is arranged in the dead space between the cartridge chamber 1a and the lens barrel unit 44, it is possible to prevent the camera from becoming large.

As described above, the hole 4 is formed on the front surface of the cover 42.
2a, and the second release lever 26 is formed through the hole 42a.
The operation section 26c can be operated, so that the operation for opening the cartridge lid 41 and making it operable can be performed very easily and by anyone. Since the hole 42a is closed by the decorative plate 49 so as not to be normally exposed, the cartridge chamber cover 41 is opened by inadvertently operating the operation portion 26c of the second release lever 26. Such a thing can be prevented.

(Correspondence between the Invention and the Embodiment) In the above embodiment, the opening / closing lever 34 and the opening / closing lever spring 39 are used as the locking means of the present invention, the operation knob 40 is used as the operating member of the present invention, and the driving lever 21 is used as the operating member. , The lock lever 22 and the lock lever spring 23 correspond to the holding means of the present invention, and the pressing part 26a and the driving part 26b of the second release lever 26 correspond to the first holding and releasing means of the present invention.
The operation section 26c corresponds to the second holding release means of the present invention.

(Modification) In the above embodiment, the second release lever 26 is operated by using the power for the lens barrel. However, the present invention is not limited to this.
The operation may be performed using power for feeding the film. In this case, malfunction of the film feeding motor,
Even if the camera breaks down due to breakage of a mechanism such as a reduction gear or disconnection of the flexible substrate, the film cartridge can be reliably taken out by the same external operation as described above.

[0091]

As described above, according to the first aspect of the present invention, even if the camera breaks down, the film cartridge can be easily taken out of the cartridge chamber without disassembling the camera, and the film can be taken out. An object of the present invention is to provide a camera-chamber lid lock device that can prevent the operation member from being carelessly operated to open the cartridge chamber lid when a cartridge is loaded.

According to the second aspect of the present invention, a malfunction of the drive source for the lens barrel, a breakage of a mechanism for transmitting the power of the drive source to the lens barrel, and damage to the drive source. It is an object of the present invention to provide a camera-chamber lid lock device that allows a film cartridge to be easily taken out of a cartridge chamber without disassembling the camera even if the camera breaks down due to a wiring failure.

Further, according to the third aspect of the present invention, the malfunction of the driving source for film feeding, the power of the driving source is damaged by the damage of the film feeding mechanism, and the occurrence of faulty wiring to the driving source. Even if the camera breaks down, it is possible to provide a cartridge chamber lid locking device of the camera which can easily take out the film cartridge from the cartridge chamber without disassembling the camera.

According to the fourth aspect of the present invention, there is provided a camera-chamber lid lock device which can eliminate the need for a dedicated second holding / releasing means and can achieve a complicated structure and high cost. It can be provided.

According to the fifth aspect of the present invention, a lid, which is a dead space between the cartridge chamber and the lens barrel unit, can be effectively used to prevent the camera from becoming larger. A lock device can be provided.

According to the invention of claim 6, there is provided a camera-cartridge-chamber lid locking device capable of easily taking out a film cartridge from a cartridge chamber of a failed camera without deteriorating design. You can do it.

According to the seventh aspect of the present invention, it is possible to prevent the second holding releasing means from being carelessly operated by closing the hole formed in the exterior component. It is possible to provide a cartridge chamber lid locking device.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing the configuration of a film feeding device, a light shielding door opening / closing device, a cartridge chamber lid locking device, and a cartridge discharging device provided in a camera according to an embodiment of the present invention.

FIG. 2 is a perspective view of a film cartridge used in the camera according to the embodiment of the present invention.

FIG. 3 is an exploded perspective view showing a main unit configuration of the camera according to the embodiment of the present invention.

FIG. 4 is a front view showing a state in which a main unit of the camera according to the embodiment of the present invention is incorporated.

FIG. 5 is a front view showing a state in which a cover is incorporated in the camera according to the embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a state in which the operation unit of the second release lever is externally operated in the camera according to the embodiment of the present invention.

FIG. 7 is a perspective view showing a configuration of a cover of the camera according to the embodiment of the present invention.

FIG. 8 is an exploded perspective view showing a configuration of a cartridge chamber cover opening / closing device provided in the camera according to the embodiment of the present invention.

FIG. 9 is a side view showing a holding state of an operation knob provided in the camera according to the embodiment of the present invention.

FIG. 10 is a sectional view taken along the line AA of FIG. 9 showing a holding state of an operation knob provided in the camera according to the embodiment of the present invention.

FIG. 11 is a top view showing a state in which a film cartridge is loaded in the camera according to the embodiment of the present invention, the lens barrel unit is moved to the first non-photographing position, and the drive ring is locked.

FIG. 12 is a top view showing a state in which a film cartridge is loaded in the camera according to the embodiment of the present invention, the lens barrel unit is moved to the second non-photographing position, and the drive ring is unlocked. is there.

FIG. 13 is a top view showing a state in which the film cartridge has been discharged in the camera according to the embodiment of the present invention.

14 is a cross-sectional view of the camera according to the embodiment of the present invention, taken along the line CC in FIG. 11, illustrating a relationship between a discharge lever and a first release lever.

15 is a cross-sectional view of the camera according to the embodiment of the present invention, taken along the line CC (at a position corresponding to the line CC in FIG. 11), showing the relationship between the ejection lever and the first release lever.

FIG. 16 is a side view showing a state where the cartridge chamber lid is locked in the camera according to the embodiment of the present invention.

FIG. 17 is a side view showing a state where the lock of the cartridge chamber lid is released in the camera according to the embodiment of the present invention.

FIG. 18 is a perspective view showing a state in which a film cartridge is loaded in the cartridge chamber in the camera according to the embodiment of the present invention.

FIG. 19 is a perspective view showing a state in which the film cartridge is taken out of the cartridge chamber in the camera according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Camera main body 1a Cartridge chamber 21 Drive ring 22 Lock lever 23 Lock lever spring 26 Second release lever 31 Discharge lever spring 34 Opening / closing lever 40 Operation knob 41 Cartridge chamber lid 44 Lens barrel unit 50 Film cartridge

Claims (7)

[Claims] A locking means for locking the cartridge chamber lid for closing the cartridge chamber in a closed state; an operating member for opening the cartridge chamber lid against the locking force of the locking means; Holding means for holding a state in which the opening operation of the cartridge chamber lid by the operating member is disabled and a locked state of the cartridge chamber lid by the locking means; and a first holding release for releasing the holding by the holding means And a second holding release means for releasing the holding by the holding means when operated from the outside. 2. The apparatus according to claim 1, wherein the first holding releasing means is operated by transmitting power for driving the lens barrel, and releases the holding by the holding means. Camera cartridge chamber lid lock device. 3. The apparatus according to claim 1, wherein the first holding releasing means is activated by transmitting power for feeding the film, and releases the holding by the holding means.
7. The lock device for a cartridge chamber lid of the camera according to 4. 4. The camera cartridge lock according to claim 1, wherein said second holding and releasing means is integrally formed with said first holding and releasing means. apparatus. 5. The camera cartridge according to claim 1, wherein the second holding release unit is disposed in a space sandwiched between the cartridge chamber and the lens barrel unit. Room lid lock device. 6. The holding device according to claim 1, wherein the second holding release unit is operated through a hole formed in a protective cover covering the entire camera to release the holding by the holding unit. 6. A device for locking a cartridge chamber lid of a camera according to any one of claims 5 to 5. 7. The camera cartridge chamber lid locking device according to claim 6, further comprising a protection plate for closing a hole of the protection cover.