JP2001222050A - Cartridge chamber cover opening/closing device, and camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain the reduction of the number of parts and the improvement of the assembling workability and also to perform the opening and closing of a cartridge chamber cover with a reduced space. SOLUTION: This device possesses the cartridge chamber cover to close a cartridge chamber 1a in which a cartridge is loaded, opening/closing members 34 and 38 shifting at a position at which the cartridge chamber cover is locked in a closed state and at the position at which locking is released and an operation member 40 to actuate the opening/closing member, and the operation member is turnably attached at a strap attaching member 1w integrally provided at an equipment having the cartridge chamber.

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 opening / closing device for opening and closing a cartridge chamber lid for closing a cartridge chamber in which a cartridge is loaded, and to an improvement in a camera.

[0002]

2. Description of the Related Art Conventionally, a device for opening and closing a cartridge chamber cover is provided with an opening / closing lever 101 as shown in FIGS.
, An opening / closing gear 102, an opening / closing spring 103, and an operation knob 104. The opening / closing lever 101, the opening / closing gear 102, and the opening / closing spring 103 are arranged on the side of the cartridge chamber 100 a of the camera body 1, and a cover 105
Are held by the camera body 100. The operation knob 104 is disposed on a side surface of the cover 105.

The opening / closing lever 101 is connected to the camera body 10.
It is rotatably fitted and supported on a lever shaft 100b formed at zero. The opening / closing gear 102 is connected to the camera body 100.
The gear 102a is rotatably fitted and supported on a gear shaft 100c formed in the vicinity of the lever shaft 100b, and a gear 102a meshes with a gear 101a formed on the opening / closing lever 101.
The operation knob 104 is rotatably fitted and supported on a cover 105 about a lever shaft 100b formed on the camera body 100 as a center of rotation, and its gear (not shown) is provided with a gear 102b formed on an opening / closing gear 102. Are engaged.

[0004] A strap mounting portion 106 having a strap hole 106 a is disposed substantially at the center of the cartridge chamber 100 a of the camera body 100 and is fixed to the cover 105.

[0005]

The camera having the above configuration has the following problems.

1) The number of components to be configured is large.

2) Since there is a phase in which the gear 101a of the opening / closing lever 101 and the gear 102a of the opening / closing gear 102, and the gear 102b of the opening / closing gear 102 and the gear (not shown) of the operation knob 104 are incorporated, it is difficult to incorporate them. is there.

[0010] 3) Since the arrangement of the operation knob 104 and the strap attaching portion 106 is different, a space for each is required.

(Object of the Invention) An object of the present invention is to reduce the number of parts and improve the workability of assembling, and to provide a cartridge chamber lid opening / closing apparatus and a camera capable of opening and closing the cartridge chamber lid in a space-saving manner. It is something to offer.

[0010]

According to a first aspect of the present invention, a cartridge chamber cover for closing a cartridge chamber in which a cartridge is loaded and an operating member for operating the opening / closing member are provided. And a cartridge chamber lid opening and closing device wherein the operation member is rotatably mounted on a strap mounting member provided integrally with the device having the cartridge chamber.

According to another aspect of the present invention, a cartridge chamber cover for closing a cartridge chamber in which a film cartridge is loaded, a position for locking the cartridge chamber cover in a closed state, and An opening / closing member that is displaced between a position where the locking is released, an operation member that operates the opening / closing member, and a strap attachment member that is provided integrally with a camera body; This is a camera rotatably attached to an attachment member.

[0012]

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

FIGS. 1 to 10 are views showing an embodiment of the present invention. FIG. 1 is an exploded perspective view mainly showing the structure of a film feeding device and a light shielding door opening / closing device, and FIG. FIG. 3 is an exploded perspective view mainly showing the configuration of the cartridge chamber lid opening / closing device, FIG. 4 is a side view showing the operation knob and its vicinity, FIG. 5 is a sectional view taken along line AA of FIG.
FIG. 7 is an exploded perspective view showing a main unit configuration of the camera, FIG. 7 is a top view showing a state in which the film feeder is incorporated in the camera body, and FIG. 8 is a state in which a finder unit and a strobe light emitting unit are further incorporated in the state of FIG. It is a top view which shows the state which was carried out. 9 and 10 are side views for explaining the operation of the cartridge chamber lid opening and closing device.
9 shows a closed state in which the lid of the cartridge chamber is locked (locked), and FIG. 10 shows an open state in which the locking of the lid of the cartridge chamber is released.

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

The film feeding device is for winding and rewinding a film housed in a film cartridge.

1, 2 and 7, 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. Further, a strap mounting portion 1w is integrally provided outside the side wall surface of the cartridge chamber. Reference numeral 2 denotes a feed motor, which is used as a drive source for winding and rewinding the film, and sending the film from the inside of the film cartridge 50 containing the film leader to the winding spool chamber 1b of the camera body 1. Power is also divided into driving forces for extending and retracting a lens barrel unit described later. The feed motor 2 has a pinion gear 3 press-fitted at its tip, and is fixed to a motor base plate 5 to be described later by two screws 4. 5 is a motor ground plate,
The feeding motor 2 is held, 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 winds 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 is engaged 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 feeding 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.

Next, the configuration 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.

In FIGS. 1, 2 and 6, reference numeral 20 denotes a light-shielding door opening / closing gear, and the film cartridge 5 shown in FIG.
The 0 light shielding door 50b is opened and closed. The light-shielding door opening / closing gear 20 has a light-shielding door opening / closing shaft 20a extending downwardly formed in a hole 1 formed in the upper surface of the cartridge chamber 1a of the camera body 1.
1 and a fitting shaft 20c formed coaxially with the center axis of rotation of the light-shielding door opening / closing gear 20 and a hole 27a formed in the fork gear pressing plate 27, respectively, to be rotatable. Supported. 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 22 denotes a lock lever, and the drive ring 2
1 to prevent the cartridge chamber 1 of the camera body 1 from rotating.
When a film cartridge 50 is loaded in a and is in a shooting state, an operation knob 40 described later with reference to FIG. This lock lever 22
Is rotatably fitted and supported by a lever shaft 1m formed on the upper surface of the cartridge chamber 1a of the camera body 1, and is held by 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 is
Of the drive ring 21 is blocked. 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 unit 22d includes:
A pressing portion 26 of a second release lever 26 shown in FIG.
a, 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 24 denotes a discharge lever, which moves up and down in conjunction with the film cartridge 50, discharges a certain amount of the film cartridge 50 from the loading port of the cartridge chamber 1a, and rotates the first release lever 25. I have. The discharge lever 24 is disposed above the first release lever 25 and has a discharge shaft 24 a formed on the discharge lever 24.
Penetrates a hole 25a formed in the first release lever 25, a hole 1o formed in the upper surface of the cartridge chamber 1a of the camera body 1, and a hole 2 formed coaxially with the discharge shaft 24a.
4b is the fitting shaft 2 formed on the fork gear pressing plate 27.
7b, it is slidably supported. The discharge lever 24 has a discharge shaft 24a at the left end.
At the right end of the arm 24c, a tapered surface 24d and a discharge shaft 24
Guide walls 24e are formed on both sides of the line a. The discharge shaft 24a has a hole 25a of the first release lever 25, and
It penetrates the hole 1 of the camera main body 1 and projects into the cartridge chamber 1a of the camera main body 1, so that it comes into contact with the film cartridge 50 loaded in the cartridge chamber 1a. The tapered surface 24d is in contact with the tapered surface 25b of the first release lever 25, and the first release lever 25 is moved by the vertical movement of the discharge lever 24.
Is rotated. The guide wall 24e is in contact with a guide shaft 27c formed near the fitting shaft 27b of the fork gear pressing plate 27, and prevents the discharge lever 24 from rotating.

Reference numeral 25 denotes a first release lever, which rotates following the ejection lever 24 to rotate the lock lever 22 counterclockwise 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.

Reference numeral 26 denotes a second release lever, which moves straight in the optical axis direction following a rectilinear guide plate 44c to be described later, thereby turning the lock lever 22 to lock and unlock the drive ring 21. It is carried out. The second release lever 26 is slidably fitted to and supported by two fitting shafts 44a formed on the upper surface of a lens barrel unit 44 described later, and is held by the camera body 1 and the finder unit 46. Have been. The second release lever 26 has a pressing portion 26a in the front and a driving portion 26b in the rear.
Are formed. The pressing portion 26a is in contact with the driving portion 22d of the lock lever 22, and rotates the lock lever 22 counterclockwise. The drive section 26b is in contact with a not-shown rectilinear guide plate.

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.

Reference numeral 28 denotes a light-shielding door opening / closing lever for switching a light-shielding door opening / closing switch 33 to be described later. The lever 28 is disposed on the upper surface of the fork gear pressing plate 27 and is fixed to the light-shielding door opening / closing gear 20 by screws 29. It is designed to rotate integrally with the door opening / closing gear 20. The light-shielding door opening / closing 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 to turn on / off the light-shielding door open / close switch 33. A light-shielding door opening / closing spring 30, which will be described later, is hung on the hook 28b.

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 hung on the SP shaft 27 e formed on the fork gear holding plate 27, and the other is hung on the hook 28 b of the light-shielding door opening / closing lever 28.

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.

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 light-shielding door opening / closing lever 28. When the light shielding door open / close switch 33 is turned on, the feeding motor 2 is driven,
The leader portion 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 opening / closing device will be described.

3 to 5, 9 and 10, 3
Reference numeral 4 denotes an opening / closing lever, which is described later.
And the drive ring 21 is rotated.
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 at substantially the center, and a locking claw 34d at the lower end. The notch 34a is fitted with the drive shaft 21c of the drive ring 21 and transmits the rotational power of the opening / closing lever 34 to the drive ring 21. The cutout portion 34b comes into contact with a drive portion 40b of the operation knob 40, which will be described later, 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 front end is provided with 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 a locking claw 38b formed at the tip of an arm 38a, and is engaged with a locking claw 1r formed on a side surface of the cartridge chamber 1a of the camera body 1. It has become.

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.
The hole is rotatably fitted to and supported by the strap shaft 1u of the strap mounting portion 1w formed on the outside of the side surface of FIG.
As shown in FIG. 5, the camera body 1 is held by covers 42 and 43. The operation knob 40
A drive unit 40b is formed at a position facing the operation unit 40a, and a rotation restricting groove 40c is formed near the drive unit 40b. 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, which is disposed below the cartridge chamber 1a of the camera body 1, holds the film cartridge 50 loaded in the cartridge chamber 1a, and has a loading opening formed in the cartridge chamber 1a. Cover the part. The cartridge chamber lid 41 has a groove (not shown) formed on the camera body 1 with a rotation axis (not shown) formed on both sides of the cartridge chamber lid 41.
And is held by the camera body 1 by covers 42 and 43. Also, the cartridge chamber lid 41
The locking claw 41 is located at a position facing the rotation shaft (not shown).
In the figure, a projection 41c is formed on the opposite side of the locking claw 41a, and the locking claw 41a is locked by the 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 configuration of the main units of the camera will be described.

In FIGS. 6 and 8, reference numeral 44 denotes a lens barrel unit, which moves to at least three positions of a photographing position, a first non-photographing position, and a second non-photographing position. At the first non-photographing position, the barrier device 44b provided in the lens barrel unit 44 is opened and closed. In the second non-photographing position, the lens barrel unit 44 is further retracted than the first non-photographing position, and the second release lever 26 disposed on the upper surface of the lens barrel unit 44 is moved in the optical axis direction. Let me. 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. At this time, the light projecting part 46b of the finder unit 46 is, as shown in FIG.
The light receiving unit 46 is disposed in front of the sun gear 10, the planetary gear unit 11, and the clutch gear unit 14 shown in FIG.
“c” is disposed in front of the fourth rewind gear 17.

Next, the operation of the cartridge chamber cover opening / closing device,
That is, the case where the cartridge chamber lid is opened and the case where the cartridge chamber lid is closed will be described separately.

(A) When opening the cartridge chamber lid From the state shown in FIG. 9, the operation part 40a of the operation knob 40 is rotated counterclockwise. Thereby, the operation knob 40
Rotates about the strap shaft 1 u of the camera body 1, and the turning power is transmitted to the opening / closing lever 34 via the drive shaft 40 b of the operation knob 40. The opening / closing lever 34 to which the rotational power is transmitted rotates counterclockwise similarly to the operation knob 40 while charging the opening / closing lever spring 39 about the lever shaft 1q of the camera body 1. Due to this rotation, as shown in FIG.
The lock between d and the locking claw 41a of the cartridge chamber lid 41 is released. With this release, the cartridge chamber lid 41 rotates counterclockwise about the rotation shaft 41b and opens.

At this time, the locking claw 38b of the locking lever 38 which rotates integrally with the opening / closing lever 34 is locked by the locking claw 1r of the camera body 1. By this locking, the opening / closing lever 34
The cartridge chamber lid 41 (via the notch 34b)
Is kept open. In this state, the operation knob 40
Is rotated clockwise, the drive shaft 40b of the operation knob 40 rotates within the notch 34b of the opening / closing lever 34, and the rotation restricting groove 40c of the operation knob 40
The rotation of the operation knob 40 is prevented by contact with the rotation regulating shaft 1v of
4 is not transmitted.

(B) When closing the cartridge chamber lid From the state shown in FIG.
Is rotated clockwise. Due to this rotation, the projection 41c of the cartridge chamber lid 41 is moved to the locking claw 1r of the camera body 1.
Is released from the locking claw 38b of the locking lever 38 locked by the lock lever 38. With this release, the opening / closing lever 34 is rotated clockwise by the spring force of the charged opening / closing lever spring 39, and the locking claw 34d of the opening / closing lever 34 is changed to the locking claw of the cartridge chamber lid 41 as shown in FIG. 41a is locked. The turning power of the opening / closing lever 34 is controlled by the operation knob 4.
0, whereby the operation knob 40 is rotated clockwise about the strap shaft 1u of the camera body 1 similarly to the opening / closing lever 34.

According to the above embodiment, the camera body 1
The operation knob 40 is attached to the strap shaft 1u of the strap mounting portion 1w having the strap hole 1t integrally formed with the strap shaft 1u.
Since the hole is rotatably fitted and supported, the operation knob 40 and the strap can be arranged in a space-saving manner. Further, with such a configuration, the number of assembling steps can be reduced, and the work efficiency can be improved.

Further, since the opening / closing lever 34 is directly driven by the operation knob 40 (via the driving portion 4b and the cutout portion 34b), it can be composed of a small number of components.

(Correspondence between the embodiment and the invention) In the above embodiment, the cartridge chamber cover 41 is provided with the opening / closing lever 34, the locking lever 38, and the opening / closing lever spring 39 (the opening / closing lever spring 39). 3
9 is not required), the strap mounting portion 1w corresponds to the strap mounting portion of the present invention, and the operation knob 40 corresponds to the operating member of the present invention.

(Modification) In the above embodiment, an example in which the present invention is applied to a camera is described. However, the present invention is not limited to this, and a cartridge for closing a cartridge chamber in which a cartridge (load) is loaded. A similar effect can be obtained if applied to a small portable device having at least a chamber lid, an opening / closing member for opening and closing the cartridge chamber lid, an operating member for operating the opening / closing member, and a strap attaching member. You can do it.

[0056]

As described above, according to the first or fifth aspect of the present invention, it is possible to reduce the number of parts and improve the assembling workability, and to open and close the cartridge chamber lid in a space-saving manner. And a camera for opening and closing the cartridge chamber lid.

[Brief description of the drawings]

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

FIG. 4 is a side view showing an operation knob provided in the camera according to the embodiment of the present invention.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is an exploded perspective view showing a main unit configuration of the camera according to the embodiment of the present invention.

FIG. 7 is a top view showing a state in which a film feeding mechanism is incorporated in the camera body in one embodiment of the present invention.

FIG. 8 is a top view showing a state in which a finder unit and a strobe light emitting unit are incorporated in the state of FIG. 7;

FIG. 9 is a side view showing a closed state in which the cartridge chamber lid is locked in the camera according to the embodiment of the present invention.

FIG. 10 is a side view of the camera according to the embodiment of the present invention, showing an opened state in which the lock of the cartridge chamber lid is released.

FIG. 11 is a side view for explaining a cartridge lid opening / closing device of a conventional camera.

FIG. 12 is a longitudinal sectional view showing an operation knob and a strap attaching portion provided in the camera of FIG. 11;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Camera main body 1a Cartridge chamber 1t Strap hole 1w Strap mounting part 34 Opening / closing lever 34b Notch part 34d, 41a Locking part 38 Locking lever 39 Opening / closing lever spring 40 Operation knob 40a Operation part 40b Drive part 41 Cartridge chamber lid

Claims (9)

[Claims] A cartridge chamber cover for closing a cartridge chamber in which a cartridge is loaded; an opening / closing member that is displaced between a position for locking the cartridge chamber lid in a closed state and a position for releasing the lock; An operating member for operating an opening / closing member, wherein the operating member is rotatably mounted on a strap mounting member provided integrally with the device having the cartridge chamber. . 2. The cartridge chamber lid opening / closing device according to claim 1, wherein the opening / closing member is a plate-shaped member. 3. The opening / closing member has a locking portion for locking a part of the cartridge chamber cover and a contact portion abutting on the operating member, and the opening / closing member closes the cartridge chamber lid. When the operating member is rotated to open the cartridge chamber lid when in the locking position, the turning power is transmitted to the opening / closing member via the contact portion, and the opening / closing member is opened. The cartridge chamber lid opening and closing device according to claim 1 or 2, wherein the cartridge chamber is displaced to a position where the locking of the cartridge chamber lid by the locking portion is released. 4. A cartridge chamber lid for closing a cartridge chamber in which a film cartridge is loaded, an opening / closing member displaced between a position for locking the cartridge chamber lid in a closed state and a position for releasing the lock. A camera, comprising: an operation member for operating the opening / closing member; and a strap attachment member provided integrally with the camera body, wherein the operation member is rotatably attached to the strap attachment member. 5. The camera according to claim 4, wherein the opening / closing member is a plate-shaped member. 6. The opening / closing member has a locking portion for locking a part of the cartridge chamber cover and a contact portion abutting on the operation member, and the opening / closing member closes the cartridge chamber lid. When the operating member is rotated to open the cartridge chamber lid when in the locking position, the turning power is transmitted to the opening / closing member via the contact portion, and the opening / closing member is opened. The camera according to claim 4, wherein the camera is displaced to a position where the locking of the cartridge chamber lid by the locking portion is released. 7. The camera according to claim 4, wherein the strap mounting member is provided on an outer side surface of the cartridge chamber wall and substantially at the center of the side surface. 8. The camera according to claim 4, wherein the strap attaching member has a strap hole. 9. The strap attachment member according to claim 4, wherein said strap attachment member has a cylindrical shape, and said operation member has a hole thereof rotatably fitted to said strap attachment member. The camera according to any one of the above.