JP2948093B2 - Camera or film cartridge loading device - Google Patents

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 such as a film from a camera or the like, or to a camera having the same.

[0002]

2. Description of the Related Art As a first prior art example of a camera which adopts a system in which a film cartridge is inserted in the axial direction of the film cartridge and accommodated in a cartridge chamber, the present applicant has disclosed in Japanese Patent Application Laid-open No.
241336 and the like. The cover of these cartridge chambers has a rotation shaft near the opening of the cartridge chamber.

FIGS. 11 and 12 are longitudinal sectional views of a cartridge chamber of a camera showing a conventional example, and show schematic views of typical examples of the above-described configuration. 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 rotation shaft 103a near the opening of the cartridge chamber 102a. 11 shows a state where the cover member 103 is closed, and FIG. 12 shows a state where the cover member 103 is opened. 102b
Is a stopper when the cover member 103 is opened.

As a second conventional example, an application showing a cartridge chamber for loading and unloading a film cartridge by rotating the cartridge chamber itself around a rotation shaft on the side facing the opening (Japanese Patent Laid-Open Publication No. 1-319737)
Has been made.

[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. Become
It was difficult to make the camera compact. The stopper 102b when the cover member 103 is opened is
3a, it was difficult to guarantee the strength. Further, since the rotation angle of the cover member 103 is large and the amount of upward protrusion 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 disadvantage that the positioning accuracy of the film cartridge is reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide a camera having a simple structure, small size, and capable of easily loading a film.

[0008]

According to the present invention, there is provided a camera having a cartridge chamber for loading a film cartridge in parallel with a spool axis of the film cartridge. to the opening of the cartridge chamber has a retractable cover member, the cover member to have a structure in which a rotating shaft on the side facing the opening of the cartridge chamber co
The camera at the position of the opening in the cover member closed state
A first surface portion forming an exterior portion of the vehicle, and the first surface portion and the rotation
Forms an exterior part of the camera at a position between the axes, and is parallel to the rotation axis.
Second surface portion formed of a flexible surface and a method of moving the cover member
Forming a camera exterior part on a surface along the direction,
Integrally with a third surface portion adjacent to both the second surface portion
According to the second aspect of the present invention, since the opening of the cartridge chamber is an upper surface facing the tripod mounting portion, the external dimensions of the film cartridge loading device and the camera can be reduced. In the above, since the cover member is biased by a spring in the opening direction, the opening position of the cover member is regulated,
According to a fourth aspect of the present invention, since the camera has an extruding means for projecting the film cartridge from the opening of the cartridge chamber, the operability of taking out the film cartridge is improved. In claim 5,
In a cartridge loading device having a cartridge chamber for loading the film cartridge in parallel with a spool axis of the film cartridge, the cartridge loading device has a retractable cover member for an opening of the cartridge chamber, and the cover member is provided in the cartridge chamber. The side opposite to the opening is
The camera at the position of the opening in the cover member closed state
A first surface portion forming an exterior portion of the vehicle, and the first surface portion and the rotation
Forms an exterior part of the camera at a position between the axes, and is parallel to the rotation axis.
Second surface portion formed of a flexible surface and a method of moving the cover member
Forming a camera exterior part on a surface along the direction,
The second surface and the adjacent third surface are integrally formed.
In claim 6, since the opening of the cartridge chamber is the upper surface facing the tripod mounting screw portion, the same operation as in claims 1 and 2 is performed,
In claim 7, since the cover member is biased by a spring in the opening direction, the cover member has the same function as in claim 3, and further, in claim 8, the film cartridge is connected to the cartridge chamber. Since this is a film cartridge having an extruding means for projecting from the opening, the same function as in claim 1 is achieved.

[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.
This embodiment shows a single-lens reflex camera, wherein 1 is a camera body, 2 is an interchangeable lens, 3 is an eyepiece frame, and 1a is a pentaprism housing unit. Reference numeral 4 denotes a shutter release button, and reference numeral 5 denotes a tripod screw mounting portion provided on the lower surface of the camera. Reference numeral 1b denotes a camera grip, which is formed so as to be held by a right hand. Reference numeral 6 denotes a cover member which opens and closes a cartridge loading opening (F in FIG. 7) of the cartridge chamber, and is supported so as to be rotatable around a rotation shaft 6a. Reference numeral 7 denotes a slide knob. When the cover is slid downward, the closed state of the cover member 6 is released, and the cover member 6 is rotated in a counterclockwise direction, so that a film cartridge described later can be attached and detached. . In addition,
Details of the operation will be described later.

In this camera, since the film cartridge is formed so as to be detachable from above the camera shown in FIG. 1, even when the tripod is mounted on the tripod screw mounting portion 5, the film cartridge can be easily replaced. it can. The rotation shaft 6a of the cover member 6 is formed near the bottom surface of the camera body 1, so that the rotation angle between the open state and the closed state is small, and the rotation shaft 6a does not protrude below the bottom surface of the camera body 1 even in the open state. Is formed. In this camera, the film cartridge can be attached / detached by only the left hand when the grip 1b is held by the right hand, and only by the right hand when the interchangeable lens 2 is held by the left hand. Reference numeral 6b denotes a wall surface of the cover member 6, and the interchangeable lens 2 side has the same shape. Due to the wall surface 6b, the cover member 6 has a box-like 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, hides the rag when opened. (The side wall 6b of the cover member 6 also makes the side wall of the camera body 10 and the back surface of the cover member 6 difficult to see even when the cover member is opened (FIG. 7), and functions as an unsightly one.)

FIG. 2 is a view showing a film cartridge to be loaded into the camera shown in FIG. Reference numeral 8 denotes a film cartridge, 8a denotes a positioning hole, and 8b denotes a film outlet. Reference numeral 9 denotes a spool shaft, around which a film (not shown) is wound, and rotatably supported by the film cartridge 8. 9a is an abutment surface, 9b
Is a positioning hole, and 9c is a keyway, which can be rotated by a camera-side driving member described later. Although the configuration on the reference surface 8c side has been described above, the spool shaft 9 is also exposed on the opposing surface 8d side. The film cartridge 8 has a structure in which a film (not shown) is fed out from a film outlet 8b when the spool shaft 9 is rotated clockwise in FIG. When the spool shaft 9 is rotated in the counterclockwise direction, the film is wound. The ideal way to support this film and cartridge is
The centering in the horizontal direction and the positioning in the axial direction are performed by the spool shaft 9 and a driving member described later, and the positioning holes 8a are formed.
To stop rotation in the horizontal direction.

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

First, the layout of the cartridge chamber will be described. In FIG. 3, reference numeral 10 denotes a camera body;
10a is a cartridge chamber. The film cartridge 8 is loaded with the reference surface 8c side down on the paper. Reference numeral 11 denotes a film, and a tunnel 10c through a guide portion 10b.
Led to. Details of the film holding method are known,
Description is omitted. In addition, the exposure control means for filming optical system, the film winding means, and the like are conventionally known, and the description 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, respectively, which are fixed to the camera body 10. Reference numeral 14 denotes a positioning pin which is fixed to the holding plate 12 and acts on the positioning hole 8a of the film cartridge 8. A driving member 15 is rotatably supported by a shaft 16 formed integrally with the holding plate 13. 15a
Denotes a positioning shaft portion, 15b denotes an abutment reference surface, and 15c denotes a key portion, which act on the positioning hole 9b, the abutment surface 9a, and the key groove 9c of the film cartridge 8 to enable positioning and rotation transmission of the film cartridge 8. And
Incidentally, the cartridge chamber 10a and the film cartridge 8 are in a non-contact state. The power transmitted from a motor (not shown) is transmitted to the gear portion 15d, and the driving member 15 is driven to rotate 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. Reference numeral 17 denotes a holding member, and a shaft 18
And the spring 19 guarantees that the film cartridge 8 is centered on the opposite surface side 1d and that the abutting surface 9a abuts against the abutting reference surface 15b.

Next, the opening and 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.
c, and is located at a position overlapping with the cartridge chamber 10a. Accordingly, the dimension Y from the cartridge chamber 10a to the outer shape is determined only by the thickness of the camera body 10 and the thickness of the cover member 6, and can be minimized, which greatly contributes to downsizing of the camera. An open spring 21 biases the cover member 6 counterclockwise.

In FIG. 4, reference numeral 22 denotes a lock member.
By the action of the guide pin 23 fixed to the camera body 10 and the guide hole 22a, it can be slid up and down.
The lock member 22 is biased upward by a spring 24. Reference numeral 7 denotes a slide knob, and the lock member 2
2 is fixed. When operated downward against the spring 24, the lock of the cover member 6 is released. Reference numeral 25 denotes a lock pin, which is fixed to the cover member 6.

As shown in FIG. 4, the lock pin 25 comes into contact with the locking portion 22b of the lock member 22 to lock the cover member 6 in the closed state. At the time of the closing operation of the cover member 6, first, the lock pin 25 and the guide portion 22 c come into contact with each other, and the lock member 22 is opposed to the spring 24.
At the end of the closing operation to reach the state shown in FIG.
Reference numeral 26 denotes a stop arm, which is rotatably attached to a shaft 27 fixed to the camera body 10. 2
Reference numeral 8 denotes a stop pin, which is fixed to the cover member 6. When the cover member 6 is opened, the spring is urged in the counterclockwise direction by the spring 21, but the opening position is regulated by the action of the stopper 26 b of the stop arm 26 and the stop pin 28.

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

In the state shown in 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 push-up member 29. In FIG.
The abutting surface 9a is securely pressed. A holding member 33 is rotatably held on a shaft 34 fixed to the camera body 10. Spring 35 is spring hook 3
Acting between 7, 33a, the holding member 33 is spring-biased in the counterclockwise direction and abuts against the stopper 33. 33b
Denotes a holding portion, which has a function of holding the film cartridge 8 against the action of the lifting member 29 when the cover member 6 is opened. Reference numeral 33c denotes a tapered portion, which 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 taking out the film cartridge 8, the photographer operates the operation unit 33 d in the clockwise direction, so that the push-up member 29 is moved by the spring 30,
To protrude.

FIGS. 7 to 9 show a state in which the cover member 6 is opened and the film cartridge 8 is raised, respectively, with respect to FIGS. The open position of the cover member 6 is determined by the stop arm 26 and the stop pin 28, is concealed by the wall surface 6b, and is finished with high quality. According to this configuration, the cover member 6 can be attached and detached with a minimum rotation angle, and at the same time, the protrusion of the cover member 6 in the state shown in FIG. It does not get in the way and is easy to operate. Further, the point of action of the stop arm 26 and the stop pin 28 can be set sufficiently far with respect to 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. At the point of action, the force is sufficiently weak for the same torque, and it is easy to guarantee the strength.

In FIG. 8, the holding member 17 is provided with a spring 19
And is held at a predetermined position by the action of the stopper of the shaft 18. FIG. 9 shows the operation of the means for pushing up the film cartridge 8, in which the urging force of the spring 32 causes the action portion 29 c of the push-up member 29 to act on the film cartridge 8 and push it up. The ascending 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 configuration 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 shown in FIG.
2b is released, the cover member 6 is rotated counterclockwise around the rotation shaft 20 by the urging force of the spring 21, and is rotated until the stop pin 28 and the stop arm 26 operate as shown in FIG. I do. At this time, since the presser member 17 is retracted,
The film cartridge 8 is moved from the state shown in FIG.
3 to the position where it comes into contact with the holding portion 33b.
It rises by the action of. Next, when the photographer operates the operation unit 33d of the holding member 33 and rotates it clockwise, the contact between the holding unit 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 and taken out.

Next, 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 open state of the cover member 6, the holding member 33 operates by the action of the tapered portion 33c.
The state shown in FIG. 9 is obtained. When pushed further, push-up member 2
9, the holding member 33 is set to the state shown in FIG. 6 when it is further pushed in against the spring 32 and pushed to the abutting position. As a result, 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. When the lock pin 25 is rotated clockwise against the spring 21 and operated to the abutting position, the lock pin 25
Acts with the locking portion 22b of the lock member 22, the state of FIG. 4 is formed, 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. FIG.
0 indicates a single-lens reflex camera as in the first embodiment, and 5 indicates
1 is a camera body, 52 is an interchangeable lens, 53 is an eyepiece frame, 5
Reference numeral 4 denotes a shutter release button, and reference numeral 55 denotes a tripod screw mounting portion, which is the same as in the first embodiment, and a description thereof will be omitted. 56
Is a cover member of the cartridge chamber, and the rotating shaft portion 56a
Is supported so as to be rotatable around the center. The relative positional relationship of the rotating shaft 56a with respect to the cartridge chamber is the same as in the first embodiment. 57 is a slide knob,
The mechanism and operation are the same as in the first embodiment. Cover member 5
Reference numeral 6 is formed of a rotating shaft 56a, a lid 56b, and a side wall 56c.

The cover member 6 of the first embodiment has a wall portion 6b, and the cover member 6 has a box shape so as to increase the strength and at the same time have a role of hiding the rag 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 an effective space in which various operation members and the like can be arranged is widened. Although the strength of the side wall portion 56c is lower than that of the first embodiment, the cover member 56
Is formed of plastic, a compact camera can be provided without increasing the Y dimension shown in the first embodiment by using reinforcing means such as inserting a metal plate. 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 to the inside of the cover member 56. When the cover member 56 is unlocked by the operation of the slide knob 57 and rotated in the counterclockwise direction by the open spring similar to the first embodiment, the stop lever 58 is rotated in the counterclockwise direction by the action of the stop pin 60. Turns to
The opening position of the cover member 56 is regulated by the same operation as in the first embodiment. The difference between the first embodiment and the opening position regulating mechanism of the stop lever 58 is that the layout of the mechanism based on the difference in the shape of the cover member 56 is arranged. In the embodiment, the opening position regulating mechanism is provided only on the photographer side of the cartridge chamber. However, if it is provided also on the subject side, it is needless to say that it is preferable in terms of strength assurance, and it is only necessary to make a selection as needed.

[0029]

In the above embodiment, the cartridge chamber 10a having the opening F for loading the cartridge 8 and loading the cartridge 8 by moving the cartridge 8 at least in the longitudinal direction of the cartridge 8 is the same as that of the present invention. The cartridge 8 loaded in the cartridge chamber 10a is rotated around a position 6a or 20 which is located forward 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 the cover member corresponds to the opening / closing 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 56 of the embodiment. The point at which 56 is biased by the spring 21 in the opening direction corresponds to the spring bias of the present invention. Further, the configuration in which 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 is described below. Corresponds to the pushing means of the present invention.

The correspondence between the components of the embodiment and the components of the present invention has been described above. However, the present invention is not limited to the configurations of the embodiments, but has a configuration capable of achieving the functions described in the claims. It goes without saying that anything may be used.

The present invention can be applied to cartridges other than the cartridges described in the specification, cartridges having image recording media other than films, and other types of cartridges and loaded materials other than cartridges. . Further, the present invention can be applied to a lens shutter camera and a video camera other than a single-lens reflex camera, and further to an apparatus other than a camera. Further, the present invention is not limited to the cartridge being loaded from above the camera, and may be, for example, a cartridge being loaded from below or from the side of the camera.

[0032]

As described above, claim 1 of the present invention is provided.
The object of the present invention is to make the camera compact, improve the operability, and simplify the configuration. The effects are as follows. The size from the inner wall of the cartridge chamber to the outer shape (side surface) can be reduced, and the size can be reduced. The cover member allows the film cartridge to be attached and detached with a minimum rotation angle, and at the same time, the amount of protrusion of the cover member upward is small, so that a cover member for the cartridge chamber with good operability can be provided. Since the cartridge chamber is fixed to the camera body,
The film cartridge can be reliably loaded, and the driving mechanism of the film cartridge is simple.

The second aspect of the present invention is intended to improve the operability because the cartridge can be attached and detached even when the tripod is mounted. With this configuration, the cover member can be opened without traveling from the bottom of the camera. This can be achieved even with a simple tripod.

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

The fourth object of the present invention is also directed to the operability of attaching and detaching the film cartridge. With this structure, the film cartridge can be sufficiently pushed out from the opening 10b by the pushing means as shown in FIG. The cartridge can be easily grasped.

The film cartridge loading device of claim 5 has the same object and effect as 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 the drawings]

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

FIG. 2 is a view showing a film cartridge loaded in the camera of FIG. 1;

FIG. 3 is a sectional view taken along line AA of the camera of FIG. 1;

4 is a view as viewed in the direction B, showing a state in which the loading of the film cartridge of the camera of FIG. 1 is completed.

FIG. 5 is a cross-sectional view of the camera of FIG.

FIG. 6 is a cross-sectional view of the camera of FIG.

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

8 is a cross-sectional view of the camera of FIG.

FIG. 9 is a cross-sectional view of the camera of FIG.

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

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

FIG. 12 is a longitudinal sectional view of a film cartridge chamber of a camera showing a conventional example.

[Explanation of symbols]

 Reference Signs List 6 cover member 7 slide knob 8 film cartridge 9 spool shaft 10a cartridge chamber 14 positioning pin 15 driving member 17 holding member 20 rotation 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

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G03B 17/30 G03B 17/00 G03B 17/02

Claims (8)

(57) [Claims] 1. A camera having a cartridge chamber for loading the film cartridge in parallel with a spool axis of the film cartridge, comprising a cover member capable of retracting from an opening of the cartridge chamber, wherein the cover member comprises : The cartridge chamber has a configuration in which a rotation shaft is provided on a side facing the opening , and the cover member is closed.
And a first surface part forming an exterior part of the camera at the position of the opening.
And an exterior of the camera at a position between the first surface portion and the rotation axis.
A second surface portion that forms a portion and is formed by a surface parallel to the rotation axis.
And a camera exterior part on a surface along the moving direction of the cover member
Is formed adjacent to both the first surface portion and the second surface portion.
A camera having a third surface portion that fits integrally . 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 pushing means for projecting said film cartridge from an opening of said cartridge chamber. 5. A cartridge loading apparatus having a cartridge chamber for loading a film cartridge in parallel with a spool axis of the film cartridge, the cartridge loading apparatus having a cover member capable of retracting from an opening of the cartridge chamber. Is the side of the cartridge chamber facing the opening.
In addition, in the closed state of the cover member,
A first surface part forming an exterior part of the camera at the position, and the first surface
Forming an exterior part of the camera at a position between the
A second surface portion formed by a surface parallel to the dynamic axis, and the cover portion;
Forming a camera exterior part on the surface along the moving direction of the material,
A third surface adjacent to both the first surface and the second surface;
Cartridge loading characterized by having a
apparatus. 6. The cartridge loading device according to claim 5, wherein the opening of the cartridge chamber is an upper surface facing the tripod mounting screw portion. 7. The cartridge loading device according to claim 5, wherein the cover member is biased by a spring in an opening direction. 8. The cartridge loading device according to claim 5, further comprising pushing means for projecting said film cartridge from an opening of said cartridge chamber.