JPH1026795A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the manual initial stage feeding of a photographic film by making use of a slide cover, in a camera loaded with a film cartridge housing the film up to its end part in a case main body. SOLUTION: The film cartridge 1 constituted in such a manner that the photographic film is wound on a spool shaft 3 up to the top end of the film and housed in a cartridge main body 2 is loaded and a spool driving shaft engaged with the spool shaft 3 and a take-up shaft for taking up the fed photographic film are provided. Then, the slide cover 15 sliding in the longitudinal direction of a camera 10 is provided as well. The film cartridge 1 is loaded in a state where the slide cover 15 is opened, in liaison with the slide cover 15, the spool driving shaft 3 and the take-up shaft and after that, the initial stage feeding is executed, that is, the top end of the photographic film is fed from the film cartridge 1, to be wound on the take-up shaft, in liaison with the operation of closing the slide cover 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera for loading a film cartridge which is wound around a spool shaft up to a leading end of a photographic film in a cartridge body, and more particularly to a camera for feeding a photographic film from the cartridge body to a winding shaft. It relates to the initial feeding of photographic film to be wound.

[0002]

2. Description of the Related Art Conventionally, in a general camera, a photographic film in which a photographic film is stored in a metal plate patrone while leaving a film leading end portion is loaded and used. As shown in Japanese Unexamined Patent Publication No. Hei 6-110124, a camera using a thrust type film cartridge has been proposed.

As shown in FIG. 3, a film cartridge 1 used in the camera of the present invention has a photographic film F on a spool shaft 3 disposed inside a cartridge body 2 formed of a resin molded product. Is also stored in a roll shape. Cartridge body 2
A slit-like film outlet (not shown)
A light-shielding cover for opening and closing the film outlet is rotatably supported inside the film outlet. The light-shielding lid is provided rotatably in parallel with the spool shaft 3, and has an engaging portion 5b at one end 5a, which is exposed on the end face of the cartridge body 2 and is externally provided to the engaging portion 5b. The light-shielding lid can be rotated between the open position and the closed position by engaging and rotating the light-shielding lid opening / closing member 50 (see FIG. 4). On the other hand, one end of the spool shaft 3 is also exposed on the end face of the cartridge body 2, and an engagement groove 3 a is provided at the end of the spool shaft 3. Engaged, photographic film F
Is sent out and rewinded.

Normally, in a camera in which the above-described film cartridge 1 is mounted and used, winding and rewinding of the photographic film are performed by driving a spool driving shaft and a winding shaft by a motor.

However, if such a motor drive system is adopted, the cost of manufacturing the camera increases due to the installation of the control unit and the like, and the unit cost of the camera increases. Although it is conceivable to reduce the cost by performing the operation manually, there is a difficulty in realizing this, in that the above-mentioned film cartridge stores the leading end of the photographic film in the cartridge body.

Further, in a conventional camera of a type in which a film containing a patrone in which a leading end portion (film leader) of a photographic film protrudes from the patrone is used,
As seen in Japanese Utility Model Publication No. 43702/1989, a loading door for opening and closing the patrone storage chamber is provided in a slidable manner. There is disclosed an apparatus in which a film reader is fed to a position where it can be wound on a take-up spool. In this camera, since the film leader protrudes from the patrone, the winding of the film leader on the take-up spool can be completed only by slightly rotating the sprocket before.

[0007]

By the way, in a camera loaded with a film cartridge as described above,
When the camera is loaded with a film cartridge, the leading end of the photographic film is housed in the cartridge body, so the initial film feeding requires the photographic film to be wound around the winding shaft. In addition to sending out the leading end of the cartridge from the cartridge body, it is necessary to feed it to the winding shaft.

In the above-mentioned camera, the length of the film which needs to be fed at the time of initial feeding becomes large, and if this is performed by manually operating the film winding dial, the operation amount is large and the initial amount is large. It takes a long time for the operation, and it is difficult for the user to see the first photographing frame, which causes a problem in operability.

Further, in the case of simply providing the mechanism in conjunction with the closing operation of the loading door of the patrone chamber, it is difficult to secure the feeding amount of the long film leading end as described above. Employment is less feasible.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been made in view of the above circumstances, and is intended to allow initial feeding by a simple operation when loading and using a film cartridge containing the leading end of a photographic film in a cartridge body. To provide a camera capable of manual film feeding.

[0011]

According to the present invention, there is provided a camera comprising: a spool driving shaft engaged with a spool shaft of a film cartridge accommodated up to the leading end of a photographic film; and a photographic film fed from the film cartridge. A take-up shaft for take-up, and a slide lid that slides in the longitudinal direction of the camera is provided. The slide cover, the spool drive shaft and the take-up shaft are linked, and the slide lid is opened and linked. After the film cartridge is loaded, the leading end of the photographic film is sent out from the film cartridge by the operation of closing the slide lid, and the initial feeding is performed to wind the photographic film around the winding shaft.

Preferably, the slide lid is provided so as to cover a lid operation member for opening and closing the cartridge lid for opening and closing the cartridge chamber in which the film cartridge is loaded in the closed state.

Further, the movement of the slide lid is transmitted to a spool drive shaft via a film feeding mechanism, and the spool shaft of the film cartridge is rotated in the film feeding direction by closing the slide lid. It is desirable to secure the film feed amount by transmitting the movement of the lid to the spool drive shaft via the speed increasing mechanism.

On the other hand, another camera of the present invention comprises a cartridge chamber in which a film cartridge is loaded, a cartridge lid for opening and closing the cartridge chamber, a lid operation member for opening and closing the cartridge lid, and a spool shaft for the film cartridge. An engaging spool drive shaft, a winding shaft for winding the photographic film fed from the film cartridge, a winding operation member for manually winding and driving the spool drive shaft, and manually operating the winding shaft A rewind operation member for driving rewind is provided, and a slide lid that slides in the longitudinal direction of the camera and covers the lid operation member and the rewind operation member is provided, and the slide lid, the spool drive shaft, and the take-up shaft are provided. When the slide lid is open, both operating members are operated and the film cartridge is After loading, it is characterized in carrying out the feeding initial feeding wrapping turned out tip than photographic film film cartridge in operation of closing the sliding lid to the winding shaft.

[0015] Even if the photographic film is not fed to the first frame for photographing by the closing operation of the slide lid,
Most of the initial feeding may be performed by closing the slide lid, and then the film may be fed by operating the winding operation member, and may be fed to the first frame.

[0016]

According to the present invention as described above, the spool drive shaft and the take-up shaft are driven by the slide cover slidably provided in the longitudinal direction of the camera in conjunction with the relatively long slide amount. The initial feeding of photographic film from the film cartridge can be performed by a simple operation of closing the slide lid, and the initial feeding can be completed in a series of operations for loading the film cartridge into the camera. This enables the realization of feeding.

Further, when the cover operation member is provided in the slide cover so as to cover the slide cartridge, the slide movement of the slide cover is inevitably performed by a series of operations accompanying the exchange operation of the film cartridge. Is performed in a state where it is not recognized by the user, and the operability is good.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the camera according to the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view of the camera, and FIG. 2 is a perspective view when a film cartridge is loaded.

The camera 10 has a cartridge chamber 12 for accommodating the film cartridge 1 at one end of the bottom of the camera body 11, and an opening of the cartridge chamber 12 is opened and closed by a cartridge lid 13. One end of the cartridge lid 13 is rotatably supported at a lateral end of the bottom surface of the camera body 11. The cartridge lid 13
The other bottom surface of the camera body 11 is provided on a slide lid 15 slidable in the longitudinal direction of the camera 10.

In the state shown in FIG. 2 in which the slide cover 15 has been moved outward and opened, the bottom of the camera body 11 opened by the slide cover 15 is provided with a roll operated for rewinding the photographic film F. A return operation member 16 (rewind crank) and a lid operation member 17 for opening and closing the cartridge lid 13 are provided.

Further, on the camera body 11, a manual winding operation member 18 (winding dial) is provided at an end on the back side, a finder 19 is provided at the center, and a rewind switching button 20 is provided between the both. ing. In addition, illustration of an optical system for photographing and the like is omitted.

FIG. 3 is an exploded perspective view of the film feeding mechanism as viewed from above.

A spool drive shaft 24 disposed downward from the top of the camera 10 is provided at the back of the cartridge chamber 12, and a key portion 24a is provided at the tip of the spool drive shaft 24. The spool is engaged with the end engaging groove 3a of the spool shaft 3 of the loaded film cartridge 1 and is driven so as to feed and rewind the photographic film F by forward or reverse drive of the spool shaft 6.

On the other hand, a cylindrical film take-up shaft 25 is provided at the camera end opposite to the spool drive shaft 24. Further, a film feeding mechanism 30 for linking the spool drive shaft 24 and the winding shaft 25 is provided. Further, the slide movement of the slide cover 15 and the spool drive shaft 24 and the take-up shaft 25 are linked, and a rack 21 extending in the longitudinal direction of the camera 10 is fixed to the slide cover 15. Are linked to the film feeding mechanism 30. On the other hand, the film feeding mechanism 30 is also linked with the above-mentioned winding operation member 18, rewinding operation member 16, and switching button 20.

Before explaining the specific structure of the film feeding mechanism 30, its basic operation will be described. The button 20 is operated to the rewind position and the slide lid 15 at the bottom is moved in the opening direction to expose the rewind operation member 16 and the lid operation member 17. The rewinding operation member 16 is rotated to rewind the photographic film F wound on the winding shaft 25 to the spool shaft 3 in the film cartridge 1. When the rewinding is completed, the lid operation member 17 is moved. By operating in the opening direction, the lock of the cartridge cover 13 is released and opened, and the photographed film cartridge 1 is taken out. Subsequently, after loading a new film cartridge 1 into the cartridge chamber 12, the cartridge cover 13 is closed, and the cover operation member 17 is operated in the closing direction (locking direction) to lock the cartridge cover 13 in the closed state. The light-shielding lid of the film cartridge 1 is opened in conjunction with the operation of the operation member 17. Thereafter, the slide lid 15 is slid in the closing direction. With this operation, the spool drive shaft 24 is driven to send out the leading end of the photographic film F from the film cartridge 1 and the winding shaft 25 is driven in the winding direction. The leading end of the photographic film F sent out is wound. Then, the switching button 20 is switched to the winding position. If the first photographing position is not reached, the winding operation member 18 is operated to feed the photographic film F.

First, a specific structure of the slide lid 15, the winding shaft 25 and the spool driving shaft 24 will be described. A winding spool gear 31 having a large diameter is provided on the outer periphery of the bottom end of the winding shaft 25,
A first planetary gear 32 is provided on the take-up spool gear 31 so as to mesh with the first planetary gear 32 at the time of winding driving. Is engaged with the second intermediate gear 36 having a larger diameter.

The second intermediate gear 36 rotates integrally with the small-diameter second sun gear 37, and the second sun gear 37 meshes with the large-diameter second planetary gear 38, and this second planetary gear 38 Numeral 38 denotes a pinion gear that rotates integrally with a small-diameter pinion gear 39. The pinion gear 39 is meshed with the rack 21 of the slide lid 15, and the movement is transmitted to the second intermediate gear 36 at an increased speed. The second planetary gear 38 is urged by a spring (not shown) in a direction in which the pinion gear 39 meshes with the rack 21, and is disengaged when the rack 21 moves in a direction to open the slide lid 15. I have.

A third intermediate gear 40 is meshed with the second intermediate gear 36, and a sixth intermediate gear 43 at the end is meshed through fourth and fifth intermediate gears 41 and 42. ing. The above-described rewinding operation member 16 is attached to the fourth intermediate gear 41 so as to rotate integrally with the fourth intermediate gear 41, and a knob 16a is provided on the rewinding operation member 16 so as to be able to undulate.

The sixth intermediate gear 43 at the end is fixed to a lower end of a connecting shaft 44, and the connecting shaft 44 is
1, a third sun gear 45 is fixed to the upper part, and a seventh intermediate gear 46 is further fixed to the upper end, and these gears 43, 45, 46 are integrated with the connecting shaft 44. It is provided so as to rotate.

A third planetary gear 47 is meshed with the third sun gear 45. The third planetary gear 47 is used for switching the switching button 20 to the cartridge-side spool gear 29 attached to the spool drive shaft 24. It is configured to engage in response. That is, the third planetary gear 47 is supported by the swing arm 61, and the engagement projection 62 at the end of the swing arm 61 is linked to the switch button 20, and the switch button 20 is operated to the rewind position R. The third planetary gear 47 is provided so as to mesh with the cartridge-side spool gear 29 as indicated by a chain line when the operation is performed.

A fourth planetary gear 48 is provided on the seventh intermediate gear 46 fixed to the upper end of the connecting shaft 44 so as to mesh with the switching button 20.
A fourth sun gear 49 with which the fourth planetary gear 48 always meshes is meshed with a hoisting gear 18a formed on the hoisting operation member 18 provided in a disk shape. The fourth planetary gear 48 is supported by a swing arm 63, and an engagement projection 64 at an end of the swing arm 63 is linked to the switching button 20, and the switching button 20 is operated to the winding position W. Sometimes, the fourth planetary gear 48 is provided so as to mesh with the seventh intermediate gear 46 as shown by a solid line.

In the film feeding mechanism 30 as described above, when the switching button 20 is at the winding position W indicated by the solid line and the film is wound by the winding operation member 18 during normal photographing, the rotation is turned to the fourth position. Is transmitted from the sixth intermediate gear 43 to the first sun gear 33 via the connecting shaft 44 from the seventh intermediate gear 46 meshing with the planetary gear 48 of the first sun gear 33. The first with the rolling drive
The planetary gear 32 moves planetarily in a direction meshing with the take-up spool gear 31, and meshes with the take-up spool gear 31 to drive the winding shaft 25 up. that time,
The pinion gear 39 and the third planetary gear 47 idle and the rotation is not transmitted to the slide lid 15 and the spool drive shaft 24.

When the switch button 20 is operated to the chain rewind position R and the film rewinding operation is performed by the rewinding operation member 16, the rotation is performed from the fourth intermediate gear 41 to the fifth and sixth rotations. Are transmitted to the third sun gear 45 via the connecting shaft 44 through the intermediate gears 42 and 43 of the third
The photographic film F being sent out by reversely driving the spool drive shaft 24 from the sun gear 45 through the third planetary gear 47 meshing with the cartridge-side spool gear 29.
Is rewound into the film cartridge 1.

At this time, the rotation is transmitted from the fourth intermediate gear 41 to the take-up shaft 25, and the first sun gear 33 is driven to rotate in the reverse direction. Reference numeral 32 indicates a planetary movement in a direction of disengaging from the take-up spool gear 31 as indicated by a chain line, and the take-up shaft 25 is in a free state. Further, the pinion gear 39 and the fourth planetary gear 48 run idle, and the rotation is not transmitted to the slide lid 15 and the winding operation member 18.

Further, when the switching button 20 is at the rewind position R and the slide lid 15 at the open position is operated in the closing direction, the pinion gear 3 is moved by the movement of the rack 21.
9. The second planetary gear 38 rotates, the rotation of which is accelerated and from the second intermediate gear 36, which rotates integrally with the second sun gear 37, via the third to sixth intermediate gears 40 to 43. The third sun gear 45 is transmitted to the third sun gear 45 via the connection shaft 44,
The spool drive shaft 24 is driven from the sun gear 45 through the third planetary gear 47 to feed the leading end of the photographic film F from the film cartridge 1. At the same time, the second
The rotation of the intermediate gear 36 is transmitted to the first sun gear 33 via the first intermediate gear 34, and the first sun gear 3
3, the first planetary gear 32 meshes with the take-up spool gear 31 to take up and drive the take-up shaft 25 to wind the leading end of the photographic film F sent out.

FIG. 4 shows the linkage between the lid operation member 17 and the light-shielding lid opening / closing mechanism. A swing lever 26 is provided so as to be swingable about the same axis as the rewind operation member 16 as the center of rotation. The lid operating member 17 is formed in a protruding shape at the tip of the swing lever 26, and the lid operating member 17 faces the bottom surface of the camera body 11. A key 27 for locking the closed state of the cartridge lid 13 is provided at the end of the swing lever 26 opposite to the lid operating member 17.

Further, the swing lever 26 is provided with a gear portion 28 adjacent to the key portion 27. A lower gear 51 meshing with the gear portion 28 is fixed to the lower end of the vertical axis 52, and an upper gear 53 is provided at the upper end of the vertical axis 52 so as to rotate integrally therewith. A partial gear 54 is provided at the position.

A light-shielding cover opening / closing member 50 detachable from the engaging portion 5b of the shaft end 5a of the light-shielding cover of the film cartridge 1 is rotatably supported by an internal frame (not shown). A partial gear 54 is provided with a toothless gear 55 that can be engaged with the partial gear 54, and a pin 50a is erected and one end of an ohmic spring 56 is attached.

The opening / closing mechanism of the light-shielding lid includes a lid operating member 17.
When the swing lever 26 is rotated in the closing direction A, the lower gear 51 is rotated by the gear 28, and the partial gear 54 is meshed with the toothless gear 55 and rotates in the opening direction. Since the spring exceeds the neutral point of the ohmic spring 56, the urging force acts in the opening direction to bring the light shielding cover into a fully opened state. Conversely, when the swing lever 26 is rotated in the opening direction B by the lid operating member 17, the partial gear 54 meshes with the toothless gear 55 to rotate in the closing direction, and rotates in the closing direction.
When the neutral point is exceeded, the urging force acts in the closing direction to bring the light shielding cover into a fully closed state.

The film feeding mechanism 3 of the camera as described above.
0 allows manual winding and rewinding of the film and initial feeding, thereby eliminating the need for a drive motor and a control circuit, thereby simplifying the mechanism and reducing costs.

In the above-mentioned embodiment, the initial feeding is performed by selectively driving the spool drive shaft 24 with the movement of the slide lid 15 in conjunction with the operation of the switching button 20. The design of this mechanism can be changed as appropriate. Basically, if the spool drive shaft 24 is fed and driven when the slide lid 15 is closed, the mechanism can be changed to a mechanism that does not require a switching button, or the film can be rewound. It is possible to change to a mechanism using an electric motor only for.

[Brief description of the drawings]

FIG. 1 is a perspective view of a camera according to an embodiment of the present invention as viewed from a bottom surface side.

FIG. 2 is a perspective view from the bottom side of the camera showing a loaded state of a film cartridge.

FIG. 3 is an exploded perspective view of the film feeding mechanism as viewed from above the camera.

FIG. 4 is an exploded perspective view showing an opening / closing mechanism of a light shielding cover of the film cartridge.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 film cartridge 3 spool shaft F photographic film 10 camera 11 camera body 12 cartridge chamber 13 cartridge lid 15 slide lid 16 rewinding operation member 17 lid operation member 18 winding operation member 18a winding gear 20 switching button 24 spool drive shaft 25 winding shaft 26 swing lever 29 cartridge side spool gear 30 film feeding mechanism 31 take-up spool gear 39 pinion gear

Claims (5)

[Claims] 1. A spool drive shaft engaged with a spool shaft of a film cartridge, wherein the film cartridge is wound around a spool shaft up to the leading end of a photographic film, and a photograph sent out from the film cartridge is mounted on the cartridge body. In a camera having a winding shaft for winding a film, a slide lid is provided which slides in the longitudinal direction of the camera, and the slide lid is linked with the spool drive shaft and the winding shaft to open the slide lid. A camera for feeding the leading end of the photographic film from the film cartridge and winding the photographic film around the take-up shaft in conjunction with the operation of closing the slide lid after loading the film cartridge in a state where the film cartridge is loaded. 2. The apparatus according to claim 1, wherein the slide lid covers a lid operation member that opens and closes a cartridge lid that opens and closes a cartridge chamber in which the film cartridge is loaded when the slide lid is closed. camera. 3. The system according to claim 2, wherein the movement of the slide lid is transmitted to a spool drive shaft via a film feeding mechanism, and the spool shaft of the film cartridge is rotated in a film feeding direction by closing the slide lid. 2. The camera according to 1. 4. The camera according to claim 1, wherein the movement of the slide lid is transmitted to the spool drive shaft via a speed increasing mechanism. 5. A cartridge chamber in which a film cartridge wound around a spool shaft and stored in a cartridge body is mounted on a cartridge body, a cartridge lid for opening and closing the cartridge chamber, and a lid operation for opening and closing the cartridge lid. A camera having a member, a spool drive shaft engaged with a spool shaft of a film cartridge, and a take-up shaft for winding a photographic film fed from the film cartridge, wherein a winding operation for manually winding and driving the spool drive shaft. A member and a rewind operation member for manually rewinding the winding shaft are provided, and a slide lid that slides in the longitudinal direction of the camera and covers the lid operation member and the rewind operation member is provided. The slide lid is linked with the spool drive shaft and the take-up shaft, and when the slide lid is opened, Operating member after loading operation and the film cartridge into the cartridge chamber, the camera which is characterized in that the feeding initial feeding wrapped tip winding shaft turned out than photographic film film cartridge in operation of closing the slide lid.