JPH07261261A - Camera or film cartridge loading device - Google Patents

Abstract

PURPOSE:To provide a camera capable of easily loading a film by providing the tunable shaft of a cover member capable of withdrawing from the opening part of a cartridge chamber on a side opposite to the opening part. CONSTITUTION:The cover member 6 opening/closing the opening part for loading a cartridge of the cartridge chamber is supported so as to turn centering the turnable shaft 20. When a sliding knob 7 is slid downward to release the closed state of the cover member 6 and turn it counterclockwise, the film cartridge can be loaded/unloaded. In other words, this camera is constituted so that the film cartridge can be loaded/unloaded from above the camera. Therefore, the film cartridge can be easily exchanged even in a state where a tripod is fixed. Further, when a grip is held by the right hand, the film cartridge can be loaded/unloaded by the operation of only the left hand and when an interchangeable lens is held by the left hand, the film cartridge can be loaded/ unloaded by the operation of only the right hand.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cartridge loading device for facilitating loading and / or unloading of a cartridge of film or the like into a camera, or a camera having the cartridge loading device.

[0002]

2. Description of the Related Art Heretofore, as a first conventional example of a camera which adopts a system in which a film cartridge is inserted in the axial direction and is housed in a cartridge chamber, the applicant of the present invention discloses in
No. 241336 has been filed. The covers of these cartridge chambers have a rotation shaft near the opening of the cartridge chamber.

11 and 12 are vertical sectional views of a cartridge chamber of a conventional camera, showing a schematic view of a typical example of the above-mentioned structure. 101 is a film cartridge,
102 is a camera body, 102a is a cartridge chamber, 10
3 is a cover member. The cover member 103 has a rotating shaft 103a near the opening of the cartridge chamber 102a. 11 shows a state in which the cover member 103 is closed, and FIG. 12 shows a state in which the cover member 103 is opened. 102b
Is a stopper when the cover member 103 is opened.

Also, as a second conventional example, an application showing a cartridge chamber in which the cartridge chamber itself is rotated about a rotation shaft on the side facing the opening to load and unload the film cartridge (Japanese Patent Laid-Open No. Hei 10 (1999) -242977). No. 1-319737)
Has been done.

[0005]

However, in the above-mentioned first conventional example, since the rotating shaft 103a needs to be formed outside the cartridge chamber 102a, the dimension X from the cartridge chamber 102a to the outer shape is large. Becomes
It was difficult to make the camera compact. In addition, the stopper 102b when the cover member 103 is opened is
Since it was close to 3a, it was difficult to guarantee the strength. Furthermore, since the rotation angle of the cover member 103 is large and the amount of upward projection in the open state is large, there is a problem in operability.

In the second conventional example, since the cartridge chamber itself having the rotary drive member rotates, the connection between the film cartridge and the drive mechanism on the camera side becomes complicated, and at the same time,
There is a drawback that the positioning accuracy of the film cartridge is lowered.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a camera having a simple structure, a small size, and capable of easily loading a film.

[0008]

In order to achieve the above object, the present invention provides a camera having a cartridge chamber for loading a film cartridge in parallel with a spool axis of the film cartridge according to claim 1 in which: The cover member that can be retracted with respect to the opening of the cartridge chamber, and the cover member has a structure in which a rotating shaft is provided on a side of the cartridge chamber facing the opening. In claim 3, since the opening of the cartridge chamber is the upper surface facing the tripod mounting portion, the outer dimensions of the film cartridge loading device and the camera can be reduced. Since the spring member is biased in the direction, the opening position of the cover member is regulated. Because the cartridge is a camera having a pushing means for protruding from the opening of the cartridge chamber, and good operability of extraction film cartridge. Further, in a cartridge loading device having a cartridge chamber for loading the film cartridge in parallel with the spool shaft of the film cartridge according to claim 5, a cover member that is retractable with respect to an opening of the cartridge chamber is provided. The cover member has a structure in which a rotating shaft is provided on a side of the cartridge chamber facing the opening, and the opening of the cartridge chamber is an upper surface facing the tripod mounting screw. Therefore, the same action as in claims 1 and 2 is achieved, and in claim 7, since the cover member is spring-biased in the opening direction, it exhibits the same action as in claim 3. The film car according to claim 8, further comprising a pushing means for causing the film cartridge to project from an opening of the cartridge chamber. Because it is a ridge,
It has the same operation as that of claim 1.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 9 show an embodiment of the present invention.

FIG. 1 is a perspective view showing the appearance of the camera.
The present embodiment shows a single-lens reflex camera, 1 is a camera body, 2 is an interchangeable lens, 3 is an eyepiece frame, and 1a is a pentaprism housing. Reference numeral 4 is a shutter release button, and 5 is a tripod screw attachment portion provided on the bottom surface of the camera. Further, 1b is a camera grip, which is formed so as to be held by the right hand. Reference numeral 6 denotes a cover member that opens and closes an opening (F in FIG. 7) for loading the cartridge in the cartridge chamber, and is supported so as to be rotatable about a rotation shaft portion 6a. Reference numeral 7 denotes a slide knob, which is slid downward to unlock the closed state of the cover member 6 and rotate the cover member 6 in the counterclockwise direction, so that the film cartridge can be attached and detached as described later. . In addition,
The details of the operation will be described later.

In this camera, since the film cartridge is formed so as to be attached and detached from above the camera in FIG. 1, the film cartridge can be easily replaced even when the tripod is attached to the tripod screw attaching portion 5. it can. Further, the rotation shaft portion 6a of the cover member 6 is formed in the vicinity of the bottom surface of the camera body 1 so that the rotation angle between the open state and the closed state is small, and even in the open state, it does not protrude below the bottom surface of the camera body 1. Has been formed. In this camera, the film cartridge can be attached and detached by operating only the left hand when holding the grip 1b with the right hand and operating only the right hand when holding the interchangeable lens 2 by the left hand. 6b is a wall surface of the cover member 6, and the interchangeable lens 2 side has the same shape. By this wall surface 6b, the cover member 6 has a box shape and the strength is increased (the presence of the wall surface 6b increases the bending strength and the torsional strength as compared with the case without the wall surface 6b) and at the same time the cover is hidden when opened. (By the wall surface 6b of the cover member 6, the side wall of the camera body 10 and the back surface of the cover member 6 become hard to see even when the cover member is open (FIG. 7), and it does not look unsightly.).

FIG. 2 is a view showing a film cartridge to be loaded into the camera force shown in FIG. Reference numeral 8 is a film cartridge, 8a is a positioning hole, and 8b is a film outlet. A spool shaft 9 is wound with a film (not shown) and is rotatably supported by the film cartridge 8. 9a is an abutting surface, 9b
Is a positioning hole, and 9c is a key groove, which can be rotated by a driving member on the camera side described later. Although the configuration on the reference surface 8c side has been described above, the spool shaft 9 is also exposed on the facing surface 8d side. The film cartridge 8 has a mechanism in which when the spool shaft 9 is rotated clockwise in FIG. 2, a film (not shown) is fed out from the film outlet 8b. Further, when the spool shaft 9 is rotated counterclockwise, the film is wound. The ideal support method for this film and cartridge is
The spool shaft 9 and a driving member described later perform horizontal centering and axial positioning, and a positioning hole 8a
To stop the horizontal rotation.

Next, the cartridge chamber of the present invention will be described with reference to FIGS. FIG. 3 shows the camera A- of FIG.
A sectional view, FIG. 4 is a B view showing the film cartridge loading completion state of the camera of FIG. 1, FIG. 5 is a CC sectional view showing the film cartridge loading completion state of the camera of FIG. 1, and FIG. FIG. 6 is a cross-sectional view taken along line DD of the camera No. 1 showing a completed state of loading the film cartridge.

First, the layout of the cartridge chamber will be described. In FIG. 3, 10 is a camera body,
10a is a cartridge chamber. The film cartridge 8 is loaded with the reference surface 8c side facing down. A film 11 is a tunnel 10c through the guide portion 10b.
Be led to. Since the details of the film holding method are known,
The description is omitted. Further, the exposure control means for the photographing optical system, the film winding means, etc. are well known in the related art, and the explanation in this embodiment is omitted.

Next, the positioning of the film cartridge 8 will be described with reference to FIG. Reference numerals 12 and 13 denote holding plates, which are fixed to the camera body 10. Further, 14 is a positioning pin, which is fixed to the holding plate 12 and acts on the positioning hole 8 a of the film cartridge 8. Reference numeral 15 is a driving member, which is rotatably supported by a shaft 16 formed integrally with the holding plate 13. 15a
Is a positioning shaft portion, 15b is an abutting reference surface, and 15c is a key portion, which act on the positioning hole 9b, the abutting surface 9a, and the key groove 9c of the film cartridge 8 to enable the positioning and rotation transmission of the film cartridge 8. And
Incidentally, the cartridge chamber 10a and the film cartridge 8 are not in contact with each other. The power transmitted from a motor (not shown) is transmitted to the gear portion 15d, and the driving member 15 is rotationally driven in both forward and reverse directions, so that the film 11 is fed and wound. A shaft 18 is fixed to the cover member 6. 17 is a pressing member, and a shaft 18
The spring 19 ensures that the opposing surface side 1d of the film cartridge 8 is centered and that the abutting surface 9a is abutted against the abutting reference surface 15b.

Next, the opening / closing mechanism of the cover member 6 will be described. In FIG. 5, reference numeral 20 denotes a rotating shaft, which is located on the side facing the opening 10b of the cartridge chamber 10a, below the cartridge chamber 10a, and on the outer wall 10 of the cartridge chamber.
It is located inside c and overlaps with the cartridge chamber 10a. As a result, the dimension Y from the cartridge chamber 10a to the outer shape is determined only by the wall thickness of the camera body 10 and the wall thickness of the cover member 6, and can be minimized, which greatly contributes to downsizing of the camera. Reference numeral 21 is an open spring, which biases the cover member 6 in the counterclockwise direction.

In FIG. 4, 22 is a lock member,
By the action of the guide pin 23 and the guide hole 22a fixed to the camera body 10, it can slide in the vertical direction.
The lock member 22 is biased upward by a spring 24. 7 is a slide knob, which is a lock member 2
It is fixed to 2. When the downward operation is performed against the spring 24, the cover member 6 is unlocked. A lock pin 25 is fixed to the cover member 6.

As shown in FIG. 4, the lock pin 25 is brought into contact with the locking portion 22b of the lock member 22 to lock the cover member 6 in the closed state. During the closing operation of the cover member 6, first, the lock pin 25 and the guide portion 22c come into contact with each other, and the lock member 22 is resisted against the spring 24.
Is pressed down, and at the end of the closing operation, the state of FIG. 4 is reached.
A stop arm 26 is rotatably attached to a shaft 27 fixed to the camera body 10. Two
A stop pin 8 is fixed to the cover member 6. When the cover member 6 is opened, it is biased by the spring 21 in the counterclockwise rotation direction, but the opening position is regulated by the action of the stopper portion 26b of the stop arm 26 and the stop pin 28.

Next, the pushing means of the film cartridge 8 will be described. In FIG. 6, 29 is a push-up member, which can be moved in the vertical direction by the action of the guide pin 31 fixed to the camera body 10 and the guide hole 29a. The spring 30 is a tension coil spring, which acts between the spring hooking portion 32 and the spring hooking portion 29b fixed to the camera body 10, and pushes up the film cartridge 8 by the acting portion 29c. This function is the film cartridge 8
It is provided in order to improve the operability when taking out.

In the state of FIG. 6, the spring force of the spring 19 of the pressing member 17 is set to be stronger than the spring force of the spring 30 of the lifting member 29, and in FIG.
The abutting surface 9a is surely pressed. A holding member 33 is rotatably held on a shaft 34 fixed to the camera body 10. Spring 35 is spring hook 3
7 and 33a, the holding member 33 is urged by a spring in the counterclockwise direction and abutted against the stopper 33. 33b
Is a holding portion and has a function of holding the film cartridge 8 against the action of the pushing-up member 29 when the cover member 6 is opened. A taper portion 33c has a function of releasing the holding member 33 in the clockwise direction against the spring 34 when the film cartridge 8 is loaded. 33d is an operation unit,
When the film cartridge 8 is taken out, the photographer operates the operation portion 33d in the clockwise direction so that the push-up member 29 is caused to move by the spring 30.
To project.

7 to 9 show a state in which the cover member 6 is in an open state and the film cartridge 8 is raised, as compared with FIGS. 4 to 6. The open position of the cover member 6 is determined by the stop arm 26 and the stop pin 28, hidden by the wall surface 6b, and finished with high quality. According to this configuration, the cover member 6 can be attached / detached with a minimum rotation angle, and at the same time, the cover member 6 does not protrude upward in the state of FIG. 7 so that the film cartridge 8 can be attached / detached. It doesn't get in the way and is easy to operate. Further, the action points of the stop arm 26 and the stop pin 28 can be set sufficiently far from the rotating shaft 20, and even if a strong force in the opening direction is applied to the cover member 6, compared with the conventional example of FIG. With respect to the same torque, a sufficiently weak force is exerted at the action point, and it is easy to guarantee the strength.

In FIG. 8, the pressing member 17 is a spring 19
Against this, it is held in place by the action of the stopper portion of the shaft 18. FIG. 9 shows the action of the pushing-up means of the film cartridge 8, and shows the state in which the acting portion 29c of the pushing-up member 29 acts on the film cartridge 8 by the biasing force of the spring 32 and pushes it up. The raised position is determined by the guide pin 31. At this time, the holding member 33 is in contact with the film cartridge 8 by the urging force of the spring 34.

The structure has been described above, but the operation method and operation will be briefly described below.

First, the removal of the film cartridge 8 will be described. When the slide knob 7 is slid downward from the state of FIG. 4, the lock pin 25 and the locking portion 2
The contact of 2b is released, the cover member 6 is rotated counterclockwise about the rotation shaft 20 by the urging force of the spring 21, and is rotated to the state of FIG. 7 in which the stop pin 28 and the stop arm 26 act. To do. At this time, since the pressing member 17 retracts,
The film cartridge 8 starts from the state shown in FIG.
The pushing-up member 29 to the position where it abuts the holding portion 33b of
Rises by the action of. Next, when the photographer operates the operation portion 33d of the holding member 33 to rotate it clockwise, the contact between the holding portion 33b and the film cartridge 8 is released,
The film cartridge 8 is operated by the push-up member 29,
It is pushed up to the state of FIG. In this state, the photographer
The film cartridge 8 can be picked up and taken out.

Next, the loading of the film cartridge 8 will be described. When the film cartridge 8 is inserted into the opening F of the cartridge chamber 10a in the opened state of the cover member 6, the holding member 33 is operated by the tapered portion 33c,
The state shown in FIG. 9 is obtained. When pushed further in, push-up member 2
9, but the holding member 33 is set to the state shown in FIG. 6 by further pushing it against the spring 32 and pushing it to the abutting position. With this, the film cartridge 8 does not pop out even if the hand is released, so that the photographer starts the closing operation of the cover member 6. If the lock pin 25 is rotated clockwise against the spring 21 and is operated to the abutting position, the lock pin 25
Acts on the locking portion 22b of the lock member 22 to form the state of FIG. 4, and the loading operation of the film cartridge 8 is completed.

FIG. 10 is an external perspective view of a camera showing a second embodiment of the present invention. This embodiment shows another embodiment regarding the shape of the cover member of the first embodiment. Figure 1
Reference numeral 0 indicates a single-lens reflex camera as in the first embodiment, and 5
1 is a camera body, 52 is an interchangeable lens, 53 is an eyepiece frame, 5
Reference numeral 4 is a shutter release button, and 55 is a tripod screw mounting portion, which is the same as that in the first embodiment, and a description thereof will be omitted. 56
Is a cover member for the cartridge chamber, and is a rotating shaft portion 56a.
It is rotatably supported around. The relative positional relationship of the rotating shaft portion 56a with respect to the cartridge chamber is the same as in the first embodiment. Also, although 57 is a slide picker,
The mechanism and operation are the same as those in the first embodiment. Cover member 5
Reference numeral 6 is formed by a rotary shaft portion 56a, a lid portion 56b, and a side wall portion 56c.

The cover member 6 of the first embodiment has the wall portion 6b, and the cover member 6 has a box shape to increase the strength and at the same time, it has a role of concealing the tatter when opened. In the example, the portion corresponding to the wall portion 6b in FIG. 1 is eliminated and only the side wall portion 56c is formed. In this type, a wide fixed wall surface is formed on each of the subject side and the photographer side of the cartridge chamber, and the effective space in which various operation members and the like can be arranged is expanded. The strength of the side wall portion 56c is lower than that of the first embodiment, but the cover member 56 is
When the lens is made of plastic, a compact camera can be provided by using a reinforcing means such as inserting a metal plate without increasing the Y dimension shown in the first embodiment. Reference numeral 58 denotes a stop arm, which is rotatably supported on the camera body by a shaft 59. A stop pin 60 is fixed inside the cover member 56. When the cover member 56 is unlocked by operating the slide knob 57 and is rotated counterclockwise by the open spring similar to that of the first embodiment, the stop pin 60 acts to move the stop lever 58 counterclockwise. Turn to
The opening position of the cover member 56 is regulated by the same operation as in the first embodiment. The open position regulation mechanism such as the stop lever 58 is different from that of the first embodiment only in that the layout of the mechanism is arranged due to the difference in the shape of the cover member 56. In the embodiment, the open position restricting mechanism is arranged only on the photographer side in the cartridge chamber, but it is needless to say that it is preferable if it is also arranged on the subject side in terms of strength guarantee, and selection may be made as necessary.

[0029]

Correspondence between the invention and the embodiment In the above embodiment, the cartridge chamber 10a having the opening F for loading the cartridge 8 and moving and loading the cartridge 8 at least in the longitudinal direction of the cartridge 8 is the cartridge loading of the present invention. The opening F for loading the cartridge 8 is rotated by rotating around a position 6a or 20 which corresponds to the chamber and is the front in the loading direction in the longitudinal direction of the cartridge 8 loaded in the cartridge chamber 10a.
The cover member 6 or 56 that opens and closes corresponds to the open / close cover of the present invention, the opening F of the cartridge chamber 10a corresponds to the upper surface facing the tripod mounting portion of the present invention, and the cover member 6 or the embodiment. The point that 56 is biased by the spring 21 in the opening direction corresponds to the spring bias of the present invention, and further, the film cartridge 8 is pushed out from the opening F of the cartridge chamber 10a by the push-up member 29 and the spring 30. Corresponds to the pushing means of the present invention.

The above is the correspondence relationship between each configuration of the embodiments and each configuration of the present invention. However, the present invention is not limited to the configurations of these embodiments, and the configurations shown in the claims can be achieved. It goes without saying that it can be any kind.

Further, the present invention can be applied to a cartridge of a type other than the cartridge described in the specification, a cartridge having an image recording medium other than a film, and a cartridge of another type or a loaded material other than the cartridge. . Furthermore, the present invention can be applied to lens shutter cameras and video cameras other than single-lens reflex cameras, and devices other than cameras. Further, the present invention is not limited to the cartridge loading direction from the upper side of the camera, and may be, for example, the lower side or the lateral side of the camera.

[0032]

As described above, according to the first aspect of the present invention.
Aims at downsizing the camera, improving operability, and simplifying the configuration, and its effects are as follows. The size from the inner wall of the cartridge to the outer shape (side surface) can be reduced, and the cartridge can be made compact. The cover member enables attachment / detachment of the film cartridge with a minimum rotation angle, and at the same time, the cover member for the cartridge chamber can be provided with a small amount of protrusion of the cover member and good operability. Since the cartridge chamber is fixed to the camera body,
The film cartridge can be reliably loaded, and the film cartridge drive mechanism is simple.

According to a second aspect of the present invention, the cartridge can be attached / detached even when the tripod is attached, and the object is to improve the operability. With this configuration, the cover member can be opened without traveling from the bottom of the camera. This objective is achieved even if it is attached to a tripod.

A third aspect of the present invention is directed to the operability of attaching and detaching the film cartridge. With this configuration, the cover member does not wobble and the open state is maintained, so that it does not become an obstacle when the film cartridge is loaded.

A fourth aspect of the present invention is also intended for the operability of attaching / detaching the film cartridge. With this construction, the film cartridge is sufficiently pushed out by the pushing means as shown in FIG. The cartridge can be easily grasped.

Further, the film cartridge loading device of claim 5 has the same object and effect as in claim 1, and claim 6 has the same object and effect as claim 2.
Claim 7 has the same purpose and effect as claim 3, and claim 8 has the same purpose and effect as claim 4.

[Brief description of drawings]

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

FIG. 2 is a diagram showing a film cartridge loaded in the camera of FIG.

3 is a cross-sectional view taken along the line AA of the camera of FIG.

FIG. 4 is a B view showing a completed state of loading the film cartridge of the camera of FIG.

5 is a cross-sectional view taken along line CC of the camera of FIG. 1 showing a completed loading state of the film cartridge.

6 is a cross-sectional view taken along line DD of the camera of FIG. 1 showing a completed state of loading a film cartridge.

7 is a B view showing a raised state of the film cartridge of the camera of FIG. 1. FIG.

8 is a cross-sectional view taken along line CC of the camera of FIG. 1 showing a raised state of the film cartridge.

9 is a cross-sectional view taken along line DD of the camera of FIG. 1 showing a raised state of the film cartridge.

FIG. 10 is an external perspective view of a camera according to a second embodiment of the present invention.

FIG. 11 is a vertical sectional view of a film cartridge chamber of a camera showing a conventional example.

FIG. 12 is a vertical cross section of a film cartridge chamber of a conventional camera showing a conventional example.

[Explanation of symbols]

 6 Cover member 7 Slide knob 8 Film cartridge 9 Spool shaft 10a Cartridge chamber 14 Positioning pin 15 Drive member 17 Holding member 20 Rotating shaft 21 Open spring 22 Lock member 25 Lock pin 26 Stop arm 28 Stop pin 29 Push up member 30 Spring 33 Holding Member 34 Spring

Claims (8)

[Claims] 1. A camera having a cartridge chamber for loading the film cartridge in parallel with a spool shaft of the film cartridge, comprising a retractable cover member for an opening of the cartridge chamber, the cover member comprising: A camera having a structure in which a rotation shaft is provided on a side of the cartridge chamber facing the opening. 2. The camera according to claim 1, wherein the opening of the cartridge chamber is an upper surface facing the tripod mount. 3. The camera according to claim 1, wherein the cover member is biased by a spring in an opening direction. 4. The camera according to claim 1, further comprising a pushing means for causing the film cartridge to project from an opening of the cartridge chamber. 5. A cartridge loading device having a cartridge chamber for loading the film cartridge in parallel with a spool shaft of the film cartridge, wherein the cartridge loading device has a retractable cover member for an opening of the cartridge chamber,
The cartridge loading device, wherein the cover member has a structure in which a rotation shaft is provided on a side of the cartridge chamber facing the opening. 6. The cartridge loading device according to claim 5, wherein the opening portion of the cartridge chamber is an upper surface facing the tripod mounting screw portion. 7. The cartridge loading apparatus according to claim 5, wherein the cover member is biased by a spring in the opening direction. 8. The cartridge loading apparatus according to claim 5, further comprising a pushing means for causing the film cartridge to project from the opening of the cartridge chamber.