JPS5870218A - Easy loading camera using cartridge film - Google Patents

Abstract

PURPOSE:To only drop a cartridge into a port part and to wind a film, by providing a means which winds a film leader part, which is inserted into a film winding chamber, on a winding shaft while interlocking with a film feeding means. CONSTITUTION:When the insertion of a cartridge 3 is terminated, an F key 9 in the lower part of a cylindrical winding shaft of the cartridge 3 is brought into contact with a fork 38 because of projection of a molt plane 17; and when a rear cover 10 is closed furthermore, a projection 18 in the camera body side is brought into contact with the side face of the cartridge 3 through a through hole 36 of a cartridge pocket 30 and presses the cartridge 3 to the rear cover side. Then, the F key 9 in the lower part of the winding shaft is dropped between forks 38 and is held between them. Thus, the cartridge 3 is fixed surely between the projection 18 and the molt plane 17.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a camera that uses film stored in a cartridge, and more particularly to a camera equipped with a simple loading device that completely automates film loading.

In a 35mm x 5mm wide perforated film camera with a cartridge, loading the film is a troublesome operation. Conventionally, various simple loading methods have been proposed to eliminate this complexity. The Rapid System by Agfa is also a type of this system. This method uses a special container called a rapid system cassette on the film feed side and the winding side, and an appropriate amount of film is pulled out from the film opening and is guided to a thin film guide plate, and then transferred to the opening of the container on the winding side. It is designed to be caught in the spool inside the container. However, since the drive method is a push-in type, the driving force becomes large, making it difficult to use long films, and the number of frames that can be photographed is limited to 20 at most. Furthermore, in this method, the film is placed in a special container, and even if the film is packaged in a special container, it is only used for rapid-type cameras and is extremely lacking in versatility.

On the other hand, in recent years, automatic loading systems have also progressed, as in the case of the commercially available Konica FS-1 camera, the cartridge is placed in the cartridge chamber, the film is pulled out, the perforations are placed on the sprocket teeth tE, and the leading edge of the film is wound. There is a simple loading method in which when you extend the film to the reel and close the back cover, the film is automatically rewound by a whitened motor and stops at the first frame, completing preparation for shooting. In addition, there are some cameras, such as the simple loading system in the Fuji Riki 5-type camera, in which the leading edge of the film is simply inserted into the winding chamber, and the automatic wine goo mechanism automatically brings the camera to a ready state for shooting.

However, in both of the above two simple loading methods, the back cover of the camera is fully opened, the cartridge is correctly positioned in the cartridge chamber, and then the league part of the film is pulled out over an appropriate length and guided to the take-up part manually. Force operation. Although this operation is easy for experienced users, it is very difficult and troublesome for beginners, especially women and children.

Therefore, the main object of the present invention is to eliminate the need for the manual operation of pulling out the film league part over an appropriate length and guiding it to the winding part, and to further improve simple automatic film loading. In other words, the camera can be automatically set to a ready state by simply placing the cartridge in an appropriate space and closing the camera back cover.

However, from the film container to the cartridge film 1
When taken out, the league part 2 should be straight as shown in FIG. Even though it is stretched, it curls when you release your hand). Furthermore, looking at the cartridge film 1 that is currently on the market around the world, the cartridge 3 as a container has a fixed shape according to the standard, but the length L of the league part 2 varies and satisfies L = 1. It ranges from none to L=15cPn. moreover,
The direction in which the league part 2 is pulled out from the boat part 4 is usually perpendicular to the axis of the winding shaft 5, but in some cases it is at an angle, that is, facing upward or downward. , it may be necessary to adjust its position when loading it into the camera. Furthermore, there are various variations in the pull-out resistance of the telescope 6 as a light-shielding member formed in the port portion 4, and there are cases where it is necessary to smoothly feed the wire to the winding 9111 without damaging the perforations 7.

Considering these points, if you remove the cartridge film from the packaging box and insert it into the camera's film loading chamber by dropping the cartridge in the axial direction with the boat part of the cartridge in a fixed position, the league part protruding from the cartridge will be removed. Regardless of the size or shape of the cartridge, after the cartridge is reliably loaded into the film loading chamber and the league part is accurately positioned at the predetermined winding position, a part of the league part engages with the film drive means. It would be desirable to be able to immediately set the cartridge in a ready-to-shoot state by reliably feeding it into the film take-up chamber.In this way, a person can simply position the cartridge by its boat and drop it into the camera. The film is immediately ready for winding, and the conventional operation of winding the film league onto the winding shaft is completely freed.

Therefore, in order to achieve the above object, the present invention has a cartridge film with a film league part protruding from a boat part on the side of the cartridge in which the film is housed through the door end member, and a film exposure part equipped with a pressure plate in the center. A camera is installed in which the cartridge is simply loaded from the axial direction into a film loading chamber provided on the opposite side to a film winding chamber provided on one side, and the insertion position of the end of the port portion is set in the film loading chamber at the initial stage of loading the cartridge. and means for guiding the cartridge in the axial direction while loading the cartridge, and guiding means for automatically extending the film league part during loading the cartridge;
Furthermore, an extension holding means is provided for holding the film league part in an extended state after loading the cartridge; A film feeding means for feeding the film to the film winding chamber side, and a means for guiding the film league part into the film winding chamber through between the film exposure part and the pressure plate while the film league part is being fed out, and The present invention is characterized by comprising means for winding the film league portion onto the winding shaft in conjunction with the film feeding means.

Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

FIG. 3 is an external perspective view of one embodiment. IO is an endorsement that opens and closes almost the entire rear side of the camera body 11. The back cover 10 is attached to the camera body 11 by a hinge 12 at its lower edge, and is opened and closed by operating an operation knob 13.
0 is closed, the latch part 14 on the main body side and the operation knob 1
Can be locked by 3. 15 is a cartridge presence confirmation window provided on the back cover 10, and 16 is a shutter button.

4A and 4B are schematic perspective views showing the camera body 11 and the back cover 10 separated. As shown in FIG. 4A, the camera body 11 has an exposure aperture 20 in the center, and the -
It has a winding chamber 22 provided with a winding drum 21 with a built-in motor on one side, and a pocket storage chamber 23 for accommodating a patrone pocket 30 fixedly installed inside the back cover 10 on the opposite side.

The cartridge pocket 30 has walls 32a, 32b, 32C, which form a cylindrical space 31 that accommodates the cartridge 3.
32d, and as shown in FIG. 4B, the cartridge 3 can be inserted from above only along the axial direction in the illustrated position, that is, with the protrusion of the winding shaft 5 facing upward. That is, the walls 32a and 32 of the patrone pocket 30
The end portion with d is cut out to roughly follow the cross-sectional shape of the boat portion to form a slot groove 33 in the vertical direction.
At the initial stage of insertion of the cartridge 3, the end of the port section 4 of the cartridge and the upper end of the slot groove 33 formed in the vertical direction of the cartridge pocket 30 fit loosely, and while the cartridge 3 is being inserted, the slot groove 33 fits into the port section. 4 and guides the cartridge 3 in the axial direction. And this slot groove 3
A guide bar 40 extends along the back cover 10 from the side wall 32a of the cartridge pocket forming the cartridge pocket 3, and guides the film league part 2 so as to automatically extend. and slides onto the pressure plate 50 tilted in advance.

The league portion 2 that has slipped into the film is automatically held in an expanded state by a holdper 45 provided below the guide bar 40 as a means for holding the leader portion in an expanded state even if the film is curled. 60 is a film cutter provided on the back cover, which is located on the opposite side of the cartridge pocket 30 with the pressure plate 50 in the center, and is equipped with a fixed blade and a movable blade, and is used to cut the excess part of a film with a long league part. disconnect. The pressure plate 50 is attached to the inside of the back cover 10, and is constantly urged toward the exposure opening 20 by three leaf springs formed in the shape of a ") I J" along the vertical direction of the back cover 10. The flatness of the film is ensured between the frame of the exposure aperture 20.The pressure plate 50 is provided with holes 55, 56 and 57, 58 at the top and bottom of the side near the cartridge pocket 30. Sprocket 70 each
and 9 Katayo Nuproket 75 and Free Sprocket 78
Insert the film through the perforation 7. A sprocket 70 having upper and lower teeth is provided adjacent to the pocket storage chamber 23 , and a single tooth sprocket 75 is located above the exposure opening 20 . These sprockets 70.
Reference numeral 75 constitutes a film feeding means for feeding the film league portion to the winding chamber side. The free sprocket 78 is mainly used to detect the amount of film movement. 80 is the tip of the league part (this tip is the tongue) 8
This guide means is provided on the side wall 25 of the exposure opening 20 on the opposite side from the sprocket 70, and prevents the fed league part tip 8 from curling into the exposure opening.

Note that the correction protrusion 90 provided on the side wall 32a of the patrone pocket 30 is a correction means for the leader portion facing downward, and the hook-shaped lever 91 cooperates with the suppression lever 92 provided on the main body side to correct the leader portion facing upward. It is a means of correcting the problem. 100 is a guide member that guides the tip of the league toward the winding chamber 22, and 101 is a guide member that cuts the film by sandwiching it between it and the left end flat part 102 on the main body side when the back cover is closed. It is a malt plane that makes it easy to pull out the surplus league part from the camera body side and maintains a light-tight state.

As shown in the cross-sectional view with the back cover 10 closed in FIG. 27
is driven as a power source. In conjunction with the rotating shaft of this motor, a gear train 29 is constructed from the winding chamber side to the parone loading chamber as shown in FIG. 5B, and driving force is transmitted.

70' is a gear for the sprocket 70. A gear provided integrally with the sprocket 7o at the upper end of the sprocket 70 (on the side opposite to the side where the car 70' is located) and a gear provided on the shaft of the sprocket 75 are mechanically connected via an idle gear. , so when the sprocket 70 is rotationally driven by this gear 70',
The gear of sprocket 75 meshing with the idle gear is driven, and these two sprockets 70, 75 are simultaneously driven to rotate in the film feeding direction. In addition, gear train 2
9 is provided with a second rewinding gear 34 for driving the cartridge winding shaft 5 (see also FIG. 4B).

By the way, as shown in Fig. 3, the cartridge pocket 30
A cartridge existence confirmation window 15 is provided on the back cover side, but in order to block light from this window 15, Moltplane 1 is installed.
7 is provided. That is, as shown in FIG. 6A, a hole 35 is provided in the wall 32d of the cartridge pocket 30, and the hole 35 substantially matches the window 15, and the malt plane 17 is fitted into the hole 35. However, it is necessary to prevent the cartridge 3 from becoming difficult to insert due to the moltoprene 17, so the cylindrical space 31 is made wider than the outer diameter of the cartridge 3 to some extent. Due to this, a means for finally positioning the cartridge 3 inserted into the cartridge pocket 30 is provided.

A through hole 36 is provided in the wall 32b located on the opposite side of the hole 35.
A protrusion 18 is provided on the camera body 11 side to fit into the through hole 35 when the back cover 1o is closed and soldered. Furthermore, a rewinding shaft 37 constituting the shaft of the rewinding gear is passed through the bottom of the cylindrical space 31 of the cartridge pocket 3o, and the end of this shaft forms a spring-biased fork 38. are doing.

As shown in FIG. 6A, when the cartridge 3 has been inserted, the diametrically extending portion (so-called F key) 9 located below the cartridge shaft of the cartridge is located on the overhang of the maltplane 17. Therefore, it comes into contact with the tip of the fork 38. When the back cover 1o is further closed as shown in FIG. 6B, the protrusion 18 on the camera body side passes through the through hole 36 of the cartridge pocket 3o, comes into contact with the side surface of the cartridge, and pushes the cartridge 3 toward the back cover. Then, the 6th C
As shown in the figure, the patrone tart plane 17 is pressed on the other side to elastically deform it. On the other hand, the F key 9 below the winding shaft falls between the forks 38, and the forks return to their original length by spring force and clamp the F key 9. Even though the cartridge 3 forms a cylindrical space 31 with plenty of room for the mold plane 17 to be securely fixed between the protrusion 18 and the maltop plane 17, the cartridge 3 does not hold the inserted cartridge in this way. , the light is blocked based on the confirmation window 15 to ensure a light-tight state, and the final positioning of the cartridge is also achieved. The cartridge existence confirmation window 15 not only confirms the existence of a cartridge, but also allows external confirmation of the number of frames of the cartridge.

Next is Figure 7, which is a view from above the camera.

The arrangement of the members will be clearly shown and explained by looking through the back cover IO.

The cartridge pocket 30 has an approximately elongated rectangular appearance, and a cylindrical space 31 slightly larger than the outer diameter of the cartridge is formed approximately in the center thereof. This cylindrical space 3
The walls 32d and 32a forming part of the port 4 are partially cut out to form a positioning guide for the port 4.

That is, the wall surface is parallel to the back cover on the back cover side of the wall 32a so as to form a V-shaped protrusion that loosely fits into the V-shaped recess 4■ of the port portion 4 protruding from the side surface of the cartridge in a substantially tangential direction. 323' is formed. Therefore, a vertically elongated slot groove 33 approximately twice the thickness of the port portion 4 is formed between this wall surface 32a and the back cover lO. Therefore, when inserting the cartridge, it cannot be inserted into the cylindrical space 31 of the cartridge pocket 30 unless the tip of the port portion 4 is positioned at the upper end of the slot groove 33. The slot groove 33 also serves as a means for guiding the cartridge in its axial direction until it is completely inserted. From this, the position of the port section 4 is determined at the initial stage of cartridge insertion.

Even means capable of guiding the patrone in its axial direction (1r
, it is not necessary to have a pocket shape or a substantially rectangular appearance as shown in this example. Modifications will be easy for those skilled in the art.

As described above, the league portion 2 of the cartridge film 1, which is inserted in the axial direction with the unreserved seat 1, has a curl as shown by the broken line in FIG. 7, but is stretched in the longitudinal direction by the guide bar 40 during insertion.

A guide bar 40 serving as an extension guide means has a base end fixed to a portion 39 slightly protruding from the upper end surface of the side wall 32a of the cartridge pocket 30, and extends therefrom in parallel with the back cover surface, and extends between the film cutter 6o and the battery chamber 28. It is bent downward at a position approximately halfway between the two and then bent again near the bottom of the camera body, and its terminal end is fixed to the back cover 10. Like this 2
The reason why it is curved is that it is necessary to form a space of a certain width between the guide bar 40 and the back cover 11 over at least the width of the film into which the leader section 2 can slide. However, as a result, the vertical guide bar 41
has the function of preventing curling for films with a relatively long leader section.

The hold par 45 as an extension holding means has an outer shape of L.
The guide bar 40 has one end fixed to the guide bar 40 and the other end fixed to the side wall 82a of the cartridge pocket 30. The fixed position with the guide bar 40 is near one end of the winding chamber 22, and the part that extends from that position directly below the eyelet and is bent at a substantially right angle and parallel to the guide bar 40 is a parallel holding part. 4
6, and extends straight toward the wall 82a with a relief part 47 formed therein so as not to come into contact with the sprockets 70, 75. In the parallel holding portion 46, the side near the perforation in the so-called 14& portion according to the film standard is held in contact with the side near the film edge, while in the relief portion 47, the side near the edge of the film in the E value portion is held in contact.

Note that the other end of the hold par 45 is not fixed to the side wall in particular, but a bar-shaped member bent into a mouth shape is attached to the guide bar 40.
Alternatively, a rectangular plate member may be attached under the guide bar. The required functions include league part 2 (particularly 1/1/2 of the width of the exposure aperture).
This is because it is sufficient for the league part (with a length exceeding 2) to serve as a press to prevent curling. In this way, the hold par 45 presses the leader part that has been guided by the guide bar 40 and slid onto the pressure plate 50 between the perforation and the edge in the width direction (E value part), and prevents the leader part from forming due to curling. prevent curling.

Next, a film position adjusting means (including a film cutter means) for adjusting the league part 2 which has been pushed in or slid in as the cartridge 3 is inserted into the correct position or winding it up correctly will be explained.

A means for tilting the pressure plate 50 to facilitate insertion of the league portion from above with the back cover 1o open will be explained with reference to FIGS. 9A and 9B. This means mainly includes a leaf spring 52 that acts to push up the lower end of the pressure plate 50, and an auxiliary pressure plate spring 53 as an auxiliary member. When the back cover 10 is opened, the free end of the plate spring 52 (g.) whose one end is fixed to the back cover and whose cross section is in the shape of a "<" character and whose free end extends downward comes into contact with the lower end of the pressure plate 50. and push this part up (
(See also Figure 4B). The pressure plate 50 is inclined. In addition, the pressure plate 5
0 has leaf springs attached in an H shape in the vertical direction on the back, but the spring force at the top of each of the two parallel leaf springs of the II shape is already slightly weaker than the spring force at the bottom. are doing. This is to encourage the inclination of the pressure plate 50.

On the other hand, the auxiliary pressure plate spring 53 is a plate spring with a dogleg-shaped cross section as shown in the figure, and has a hole in the center of the spring.By inserting and fixing a shaft member into the hole, the auxiliary pressure plate spring 53 does not come off from the back cover. It is configured as follows. When a load is applied to one part of the dogleg shape from above, the other part lifts up, and conversely, when the blade part is pressed, the blade part lifts up, acting like a seesaw.

Therefore, when the pressure plate 50 is tilted by the pressure plate inclined plate spring 52, the back side of the upper end of the pressure plate 50 is attached to the auxiliary pressure plate spring 53.
Press one side of the In response to this, the other part lifts up.

Incidentally, the auxiliary pressure plate spring 53 performs its main function when the utility plate 10 is closed, as will be described later.

As shown in FIG. 9A, when the back cover 10 is opened,
An imaginary line connecting the pressure plate surface and the guide bar 40 and the holding par 45 forms a V-shape, and when the film leader section 2 is about to slide into the gap formed between the inner surface of the back cover 10 and the back side of the pressure plate. It is possible to avoid the inconvenience of the edge of the section falling down.

This is particularly advantageous when designing the camera body to be thin in the lens optical axis direction.

When the back cover is closed, as shown in FIG. 9B, the free end of the pressure plate inclined plate spring 52 is pressed by the protrusion 52' provided on the camera body side, releasing the spring force from the pressure plate 50, and the auxiliary pressure plate spring 53 As a result of the other part of the auxiliary pressure plate spring 53 being pressed against the protrusion 53' on the main body side, one part of the auxiliary pressure plate spring 53 is lifted up and acts to strongly press the back surface of the upper part of the pressure plate. There are two reasons why the upper rear surface of the pressure plate 50 is strongly pushed toward the film side. Firstly, the spring force at the upper part of the H-shaped leaf spring at the back of the pressure plate 50 is weaker than that at the lower part. Therefore, this is to compensate for this, and the second reason is to ensure the adhesion between the pressure plate 50 and the film 2 since the feeding force is mainly applied to the upper part when feeding the league part.

Next, FIGS. 10A to 10C and 11A to 11
The film position regulating means for the upward league portion will be explained based on Figure C. In addition, Figures 10A and 11
Figure A, Figure 10B and Figure 11B, Figure 10C and Figure 11
The C diagrams form a pair and are viewed from opposite directions. Here, when the league part is pointing upward, it means that the longitudinal direction of the league part is tilted toward the second part of the camera with reference to the direction perpendicular to the axis of the loaded cartridge.

As described in 7i1, this means is formed by the cooperation of the hook-shaped lever 91 provided in the cartridge pocket and the suppression lever 92 provided on the camera body side.

When the back cover is open, as shown in FIGS. 10A and 11A, a hook-shaped lever 91 rotatably provided on the side wall 82a of the cartridge pocket by a shaft 93 is normally held by a spring 94.
is biased in the opposite direction to the direction toward the back cover, and rotation is prevented by a stopper protrusion 95 provided on the cartridge pocket 30.

The spring hook 96a formed integrally with the hook-shaped lever is a pin, and the spring hook 96b integrally formed with the patrone pocket 30 is a pin. On the other hand, this hook-shaped lever 9
A substantially dogleg-shaped pressing lever 9 that presses 1 from its back.
2 is rotatably provided on the side wall of the pocket storage chamber 23 by a shaft 97, and is normally biased toward the camera back by a spring 91 stronger than the spring 94, and when not in contact with the hook-shaped lever 91. Rotation is regulated by a stopper protrusion 98 provided on the camera body. A pin 99 is implanted at the tip of this pressing lever, and this pin 99 presses the back of the hook-shaped lever 91.

As shown in FIGS. 10B and 11B, when the camera back 10 is attempted to be closed in the direction of the arrow, the pin 99 of the suppression lever first comes into contact with the back of the hook-shaped lever 91 and presses the back toward the camera back. . The hook-shaped lever 91 is separated from the stopper protrusion 95 and rotates about the shaft 93, so that the hook-shaped portion 91' advances toward the back cover. At this time, the edge of the league portion located above the position of normal vision is pushed down in a tapered shape by the lower surface of the hook-shaped portion 91'. On the other hand, the tip of the hook-shaped portion 91' is connected to the back cover 10.
comes into contact with the inner surface of Note that the reason why the back cover is brought into contact with the film in a half-open state as shown in FIGS. 10B and 118 is to push down the edge of the league portion before the film cutter 60, which will be described later, starts working. This is because once the film cutter 60 starts cutting into the film, the film itself cannot be pushed down. When the back cover lO is further closed, the pin 99 with l<-92 moves upward while sliding against the back of the hook-shaped lever 91, and the back cover is closed as shown in Figs. 10C and 11C. When completely closed, each lever 91
．． 92 is in contact with each other through a pin 99, and the pressing lever 92 is supported by the rear wall on the side of the camera body 11, while the hook-shaped lever 91 is supported by the inner surface of the back cover 10, and each maintains a stationary state. In this way, the upward league part is regulated in position (d) as the camera back is closed.

Figures 12A and 12B show film position regulating means for the downward league. Note that the IJ-da section facing downward means that the longitudinal direction of the league section is tilted toward the bottom of the camera based on the direction perpendicular to the axis of the loaded cartridge, and this means that only the tongue section can be pulled out from the port section. This is unique to unused Patrone films. This means is a rectangular correction protrusion 90 that protrudes from the end of the side wall 32H of the cartridge pocket in the film feeding direction. The position where this correction protrusion 90 is provided, that is, the position of the horizontal surface 90' of the protrusion located on the side where the film enters, is the lower end of the tongue 8 facing in the correct direction when the cartridge 3 is completely inserted into the cartridge pocket 30. This is the place where the liquid meets the edge.

Note that the protrusion 90 may be integrally molded with the cartridge pocket 30.

As shown in FIG. 12A, when the tongue 8 is tilted downward, the lower edge of the tongue comes into contact with the upper horizontal surface 90' of the correction protrusion 90 just before the cartridge pocket 30 is loaded with the cartridge 3, and the 128th As shown in the figure, when loading is about to end, the straightening protrusion 90 acts to lift the tongue 8 in the direction of the arrow, so that the tongue 8 is oriented in the correct direction. This downward league position regulating means is particularly effective for cartridge films made by Ilford.

Next, a film cutter means for cutting a film having a long league portion to an appropriate length so that it can be wound into the winding 11fm21 will be explained. FIG. 13 is an exploded perspective view of the film cutter, and reference numeral 63 denotes a cutter fixing base, which is fixed to the back cover by screws I or caulking.

61 is a fixed blade fixed to a cutter fixing base 63; 62 is a movable blade rotatably attached to one end of the fixed blade 61 by a shaft 64; the blade portion is gently curved to facilitate cutting. The coil spring 65 is inserted into the shaft portion of a shaft 64 located between the cutter fixing base 63 and the fixed blade 61. In addition, a spring 67 is applied to the pin 66 and the spring 67 is provided at the head of the shaft 64 and the center of the movable blade 62.
When the movable blade 61 is opened, the fixed blade 61 and the movable blade 62 urge the movable blade 62 in a direction in which the fixed blade 61 and the movable blade 62 open each other as shown in FIG. 14A. Note that 68 is an E-ring provided at the end of the shaft 64. Further, the cutter fixing base 63 may be integrally molded with the back cover 10.

As shown in FIG. 14A, the league part 2 is mainly guided by the guide bar 40, and the tip part is guided well by the tapered slope 61' formed at the upper end of the fixed blade 61 and slides onto the fixed blade 61. To position.

At this time, the movable blade 62 is urged away from the fixed blade by the spring 67, and therefore the movable blade 62 is urged away from the fixed blade by the spring 67.
It remains in contact with a part of the protrusion 62'. After the film league part 2 slides into the upper part of the fixed blade 61, the 14th
As shown in figure B, when the back cover 1° is closed in the direction of the arrow, if the league part is upward, press the league part 2 downward (as shown by the arrow near the film),
The lower edge of the league portion contacts the movable blade 62, and cutting is performed from the point of contact to the upper edge of the league portion to separate the excess portion. ^:; 14 As shown in figure C, back cover 1
0, the film league part 2 is completely separated from the excess part, and the film in the league part is moved by the movable blade 6.
2, and its cut end is located almost at the end of the winding chamber 22 (near the end in the film feeding direction). However, due to the winding of the film itself, the tip of the league portion (cut end) curls into the winding chamber, which is convenient for winding the film around the winding drum.

Incidentally, since the excess league part is clamped to the surface 2 of the camera body side 11 by the mold plane 101 shown in FIG. 4B, it can be easily cut.

At the same time, as shown in FIG. 5A, since a narrow passage 110 is formed for the film to pass through the excess league, the cut excess league can be easily pulled out. Once pulled out, the 1111 malt plane 101 restores its elasticity to an appropriate 1ν and closes the MiJ narrow passage 110, thereby maintaining a light-tight state.

A double sprocket as a film feeding means composed of a sprocket 70 and a sprocket 75 will be explained in more detail. FIG. 15 is an enlarged perspective view of essential parts of this double sprocket, and FIG. 16 is a sectional view taken along the line I--I in FIG. 15.

A sprocket 70 having a substantially cylindrical appearance and having upper and lower teeth is disposed in a space adjacent to the pocket storage chamber 23. The sprocket 75 is connected to the exposure opening 20 near the pocket storage chamber 23 side.
placed above. It is preferable that the sprocket 70 be placed as close as possible to the pocket storage chamber 23, and that the sprocket 75 be placed as close as possible to the sprocket 70. This will give you an advantage over shorter leagues.

The teeth 71.76 of each sprocket 70.75 are aligned in a straight line along the series of perforations 7. 16th
As you can clearly see from the diagram, these sprockets 70.75
Each of these sprockets has 6 teeth (or may have 8 teeth), and the teeth arranged on the rotational surface are configured to have a phase difference of approximately 30 degrees with respect to other sprockets.

The reason why two sprockets are used in this way is to ensure safety so that the force can be distributed and the film can be fed without any trouble. That is, FIG. 17 shows experimental data related to the inventor's experiment, and from this experimental data, the film league section 2 is
There is a considerable amount of resistance in the initial stages of extraction, which varies from film manufacturer to film manufacturer and even from film type to film type. Film drawing resistance is 250 to 1100
It is distributed between 9 and 9. Therefore, the film (1) in Figure 17
In order to safely deal with the pull-out resistance at 0) or 0), a dual sprocket 70.75 was constructed. However, (
If only the cartridge films of A), (B), (Q, ...... or p) are used, it is sufficient to use the sprocket 70 alone without using the sprocket 75, without using a double series. be.

Furthermore, a characteristic feature of both Nuprockets in this embodiment is that the cross sections of the teeth 71, 76 are circular instead of rectangular as in the conventional case. However, the generatrix curve that appears in the longitudinal section of the tooth is an involute curve as in the conventional case. The reason why the teeth of both sprockets are shaped like round pins is as follows. That is, according to experiments, when a load of 850 g was applied to the tooth of a conventional sprocket as shown in FIG. 18 (al) over a width of 2 mm in the direction of the arrow in the figure, the perforation of the film was changed as shown in (a2). It was found that cracks occurred due to stress concentration at the corners and damaged the perforations.

(a3) is a cross section in that case, and one side of the pressed perforation has a wrinkled jam-like shape.

This is taken into consideration because when the league portion 2 is suddenly pulled out from the telescope 6 by the sprocket after the film is loaded, the acceleration is extremely large and an extremely large force is applied to the perforation 7. When the teeth are shaped like nine pins, even when a load of 110 (l), which is almost the maximum pull-out resistance in the graph of Fig. 17, is applied in the direction of the arrow, as shown in Fig. 18 (bl), as shown in (b2), The stress is dispersed and it simply deforms along the shape of the round pin-shaped teeth.(b3) is the cross section in that case.From the above, when a nine-pin sprocket sends perforations, especially It is understood that this is convenient when sending or stopping suddenly.

When a league portion of exposure amount [120, which has a length only up to just before the side wall 25 on the winding chamber side, is fed by the double sprocket, a guide means 8o is provided to prevent the tip of the tongue from being folded into the exposure opening. is shown more specifically in the enlarged view of FIG. The curvature of the tongue part on the side with perforations is corrected by pressure from the back, but the part on the side without perforations is a free end at the exposure aperture and is curved in the width direction. .

According to the inventor's experiments, it has been confirmed that there is a fairly high probability that it will come into contact with the side wall and wrap around the exposure aperture.

In the configuration, the side wall 25 is divided into two parts, upper and lower, the lower part is a fixed side wall 81, while the upper part 8
2 rotates together with the leaf spring 85.

That is, the rectangular plate-shaped side wall portion 82 is fixed to the plate spring 85 with screws 86, while the portion 87 of the plate spring 85 is fixed to the camera body 11 with screws. One side edge 89 of the movable portion 88 of the lower part of the leaf spring is connected to the end surface 82' of the side wall 82 forming the exposure opening 20.
The ridges are made to coincide with each other, and of course, they are made to coincide with the shape formed by the end surface 84 of the upper wall of the exposure aperture. The length of the blade side edge 89 is somewhat longer than the length of the end face in the direction of the force, and the width of the movable portion 88 of the leaf spring is somewhat longer than the width of the rectangular plate-shaped side wall 82. It's long.

In other words, the leaf spring 85 is attached to the fixed side wall 25 (
It is large enough to cover the entire boundary between the plate-shaped movable side wall 82 (including the lower wall 81) and the plate-shaped movable side wall 82. This is to prevent light during exposure from leaking into the winding chamber 22 through the gap between the boundaries.

Since the lower tip of the tongue is curved, the tip of the tongue 8 comes into contact with the side wall 25. Leaf spring 88 along with movable side wall 82
rotates in the film feeding direction using the line segment E as a fulcrum (of course, this leaf spring 88 can be bent with a force that is moved by the stiffness of the film). leaf spring 88
At the same time, the movable side wall 82 opens outward. Immediately, the tip of the tongue is introduced into the winding chamber. After the tip of the tongue is guided, the leaf spring 88 immediately returns to its original state. 1. This leaf spring always remains in its restored state, and only opens outward when the tip of the tongue comes into contact with it.

The tip of the tongue is thus movable (1111) and is fed into the winding chamber 22 by the wall 80, and the well-known guide member 100 guides it toward the winding chamber 22 (4th B).
(see figure). The guide member 100 is attached between the pressure plate 50 and the film cutter 60 inside the back cover 11. When the back cover is closed, the positional relationship is such that the winding chamber 22 between the side wall 25 and the winding drum 21 is closed from above. Then, the leading end of the film is attached to the winding cylinder 21 in the direction in which the film enters.
A slope 106 is formed so as to face in the direction of , and acts to push the incoming film forward.

In addition, in this embodiment, this is one of the means for expanding the league section 2. - Tarumome is the guide bar 40, but additional guide means according to the length of the league portion 2 are also provided. That is, for extremely short league portions, this is the auxiliary guide protrusion 103 provided on the inside of the back cover near the slot groove 33 of the cartridge pocket 30. Also, for the league part where the tip is in front of the film cutter 60,
The slope 107 formed on the upper part of the guide member 100 described above
This guides the edge of the league part that slides in from above, pushing it toward the camera body. Furthermore, for the league part that is deeper than the film cutter 60 position, the edge of the league part is pushed toward the guide bar by the downward slope 61' formed at the upper end of the fixed blade 61 of the film cutter. be guided.

When the cartridge film 1 is inserted and the back 110 is completely closed, the movable protrusion 112 (see FIG. 3) on the camera body side is pushed against the back cover 10. The switch connected to the movable protrusion 112 is turned on, and the motor housed in the winding drum 21 starts rotating. Accompanied by this rotation, the tooth row 29 is driven, and the double sprocket 70, 75 rotates. The sprocket that meshes with perforation 7 is league part 2.
is fed to the winding chamber 22 side through the exposure opening 20. tongue 8
The leading end of is wound onto the winding drum 21 by a well-known mechanism.

Alternatively, in the case of a straight league part, the cut end is immediately wound up on this winding cylinder 21. When the free sprocket 78 detects a predetermined rotation (usually 2 to 3 rotations), a stop signal is output and the electric motor is stopped by this signal. In this way, the shooting semi-f@ of the first frame is automatically completed. Thereafter, each time the shutter button 16 is pressed, the film is advanced one frame at a time by an automatic frame advance mechanism.

When all the frames have been photographed, the free sprocket 78 gives this state, that is, the information that the film has moved a predetermined amount, to the electrical switching means, and in response to the switching means, the electric motor is operated, and the cartridge pocket The drive horn of the electric motor is transmitted to the gear 34 at the bottom of the sprocket 30 by a well-known mechanism to drive the winding shaft 5 of the sprocket 30 to automatically rewind the photographed film. After that, it is only necessary to open the back cover 10 and pull out the cartridge 3 from the cartridge pocket 30 by holding the shaft protrusion of the cartridge.

Next, a second embodiment will be explained.

FIGS. 20A and 20B are external perspective views of the second embodiment. The back cover 210 of this camera 200 is attached to the rear side of the main body in the lateral direction of the second part of the camera main body 211 by a hinge 212 so as to be openable and closable. Unlike the first embodiment, the cartridge film 1 is loaded into the cartridge loading chamber 231, which is a cylindrical space formed on the left side of the camera body.
It is formed along the vertical direction of the camera body 211 on a side that substantially contacts the inner surface of the back cover 210 when the back cover 210 is closed. The slot groove 233 is defined by the right wall 228' of the battery compartment 228 on the left side of the camera body 211.
This is the end surface 232' of the wall 232 that extends further to the right from the front.

This wall 232 also forms part of the cylindrical space 281. Therefore, the cartridge 3 is at the position shown in the figure [1t].

That is, insertion is permitted only from the axial direction with the protrusion of the winding shaft 5 facing down (according to the standard, the tongue 8 must also be located on the side of the winding shaft protrusion). The slot groove 233 is a means for determining the insertion position of the end of the port portion at the initial stage of cartridge loading, and is also a means for guiding the cartridge in the axial direction during cartridge loading.

A radius is formed in the lateral direction at the ridge line where the bottom surface of the camera body and the surface on which the film is placed intersect, and this radius section 240 serves as a guide means to automatically extend the league section during cartridge loading. becomes. This allows the league part 2 to slide onto the film mounting surface 245 by utilizing the curl of the film. Still, the film mounting surface 245 serves as an extension holding means that utilizes the curl of the film. Furthermore, 213 is the finder window.

216 is a shutter button, and 218 is a screw hole for a tripod.

FIG. 21 is a rear view of the camera body side looking through the back cover 210. 231 is a cartridge loading chamber that accommodates the cartridge 4 only in the illustrated state; 300 is an exposure opening side film guide located immediately to the right of the slot groove 233 and formed perpendicular to the film feeding direction; 270 is a double toothed film guide; Sprocket, 275 is a single-tooth sprocket, 220 is an exposure aperture,
280 is a movable side wall forming a part of the exposure opening 220 adjacent to the winding chamber 222, 222 is the winding chamber, 221 is the film winding 11 [1''l] which has a built-in motor, and 260 is on the camera body side. They are provided film cutters, and are arranged around J along the film feeding direction. Reference numeral 227 is a battery that supplies power to the motor built in the winding drum, and is housed in a battery compartment 228. Further, the teeth of the sprockets L-270 and 275 are nine-pin shaped as in the first embodiment.

FIGS. 22A, 22B, and 22C are side views viewed from the TI, III, and IV force directions of FIG. 21, respectively. As shown in FIG. 22A, in this embodiment a pressure plate 250
is attached to the second part of the camera body 211 with a hinge 251, and is held at a predetermined opening angle by a spring or the like with respect to the film mounting surface 245 when the back cover is open. When the back cover 210 is closed, the pressure plate 250 is fixed to the back cover 210 and presses the back surface of the film with a pressure plate spring 252 to ensure the flatness of the film. At this time, the pressure plate 250 comes into contact with the upper and lower step portions 254 which are separated by approximately I+/ of the film from the film rail 253.

22B and 22C, it will be explained that the exposure opening side film guide 300 is pushed toward the lens side by closing 1i210.

When the back cover is opened, the exposure amount [- side film guide 300
It protrudes slightly above 5. The purpose of protruding in this manner is to allow the league portion to slide in in the width direction without any hindrance. In this way, for example, the engagement between the teeth of the sprocket and the edge of the league portion will not interfere with smooth sliding. As shown in FIG. 22C, when the back cover 210 is closed, the respective protrusions 301 and 30'2 provided on the two vertical parts of the back cover press the exposure opening side film guide 300 from above, and the guide and The contact surface with the film is sunk below the film mounting surface 245, and the film is correctly positioned on the film rail 253 of the exposure aperture.

The manner in which the motor rotates according to the distance between the back cover and the film league portion 2 is wound onto the take-up cylinder 221 is the same as in the first embodiment.

In the above embodiments, the sprockets 70, 75, 270, 275 and Let of the film feeding means are not limited to the sprockets, and may be rubber rollers or caterpillar-like elastic members.

As detailed above, according to the present invention, the means for guiding the boat part protruding from the side surface of the cartridge is formed, and the groove is formed so that the cartridge film can be inserted only from the axial direction along the port part guiding means. In addition, means for automatically extending the league part using the curl of the film while inserting the cartridge, and means for holding the extended league part in that state are provided, so that when the camera back is closed, The league part can be automatically fed to the winding chamber, wound up, and set to the ready state for shooting.
By simply inserting the cartridge film into the film HML chamber, it is possible to load the film very easily even for women and children who are generally unaccustomed to operating the mechanism.

Furthermore, in an embodiment in which a film position regulating means is also used, it is compatible with any fIF type cartridge-filled 35-hole film that is currently being distributed around the world, and its versatility is extremely large.

[Brief explanation of drawings]

Figure 1 is a perspective view of the cartridge film, Figure 2 is a perspective view for explaining the winding of the cartridge film, and Figure 3 is a perspective view of the cartridge film.
The figure is an external perspective view of one embodiment, Figures 4A and 4B are perspective views showing one embodiment separated, Figure 5A is a cross-sectional view of the case between the back covers, and Figure 5B. FIG. 6A is a diagram for explaining the gear train. Figures 6B and 6C are schematic cross-sectional diagrams of the cartridge's final position J, r (determining means); Figure 7 is a plan view of the camera as seen from the camera with the camera back opened; Figure 8 is a transparent view of the camera back. The rear view of the camera body, Figures 9A and 9B are explanatory diagrams showing the main parts of the mechanism for tilting the pressure plate in cross section, and Figures 10A and 10.
Figures B and 10C, as well as Figures 11A, 11B, and 11C are explanatory diagrams of the position regulating means for the upward leader part, and Figures 12A and 12B are explanatory diagrams of the position regulating means for the downward league part. Figure 13 is an exploded perspective view of the film cutter, Figures 14A, 14B and 14C are explanatory diagrams of the operation of the film cutter, Figure 15 is an enlarged perspective view of the double sprocket, and Figure 16 is Figure 15I- 17 is a graph showing the pull-out resistance with respect to the type of film, and FIG. 18 is a comparison diagram between the teeth of a conventional sprocket and the teeth of an example sprocket.
3) shows the conventional one, and (bl) to (b3) show the ones of the embodiment. Fig. 19 is an enlarged view of the guide means at the tip of the leader section, Figs. 20A and 20-B are external perspective views of the second embodiment, and Fig. 21 is a camera view of the second embodiment when looking through the back cover. Back view of the main salary, Figure 22A, Figure 22B and Figure 22C
The figure is an explanatory diagram of film loading in the second embodiment. 1... Patrone film, 2... League section, 3... Patrone, 4... Boat section, 5... Film roll shaft, 6...
Terremp, 10... Back cover, 20... Exposure amount I-1, [1... Winding l1tq, 22...
... Winding chamber, 23 ... Pocket storage room, 2
9... Gear train, 30... Patrone pocket, 31... Tube IK space, 33...
・Slot groove, 40...Guide bar, 45...
... Hold bar, 50 ... Pressure plate, 70,
75... Sprocket, 80... Movable side wall. Patent applicant: Fuji Photo Film Co., Ltd. Agent: Patent attorney Seihaku Ho and two others Figure 1. Figure 2 1 / Figure 6B Figure 6C Figure 9A Figure 9B Figure 12A Figure 50 Figure 128 Figure 21 Figure 300 Continued from page 1 [Inc.] Inventor Shigeo Nakayama 210 Nakanuma, Minamiashigara City Fuji Photo Film Inventor: Masashi Takamura, 210 Nakanuma, Minamiashigara City, Fuji Photo Film Co., Ltd.

Claims (7)

[Claims] (1) A cartridge film with a film league part protruding from the port part of the cartridge into which the film is placed through its light-shielding member is provided on one side with the film exposure part pressed from the back by a pressure plate in the center. . A camera that allows the cartridge to be simply loaded from the axial direction into a film loading chamber provided on the opposite side of the film winding chamber, and means for determining the insertion position of the end of the port portion at the initial stage of inserting the cartridge into the film loading chamber. and a means for guiding the cartridge in the axial direction during insertion of the cartridge, and an extension guide means for automatically guiding the film league part in the winding direction during insertion of the cartridge; A stretching holding means that later holds the film league part in an extended state, and a film league part that engages with the film league part at the base of the film league part and stretches against the resistance of the light shielding member. a film feeding means for feeding the film to the film winding chamber, and a means for guiding the tip of the film league to the film winding chamber through between the film exposure section and the pressure plate during feeding of the film league, and A simple loading camera using a cartridge film, comprising means for winding a film league portion inserted into a film winding chamber onto a winding shaft in conjunction with the film feeding means. (2) - The cartridge film according to claim (1), further comprising league part position regulating means for regulating the position of the film league part that slides onto the pressure plate along the extension guide means. A simple loading camera used. (3) The above league part position regulating means is any one of the following: a means for correcting an upwardly facing league part, a means for correcting a downwardly facing league part, a film cutter means, or a combination of these means. A simple loading camera using the cartridge film described in item (2). (4) The pressure plate is tilted with respect to the back cover so as to guide the film league part that is about to slide onto the pressure plate along the extension guide means ( A simple loading camera using the cartridge film according to any one of items 1) to 3). (5) The feeding means is a sprocket, and the two sprockets are arranged in two along one perforation of the film league part.
A simple loading camera using the cartridge film according to any one of items 1 to 4. (6) A simple loading camera using a cartridge film according to claim 9, wherein the teeth of the sprocket have a substantially circular cross section. (7) A patent claim in which the means for guiding the tip of the film league part to the film winding chamber includes a movable side wall that guides a part of the side wall of the exposure opening so that the tip of the league part does not curl into the exposure opening. A simple loading camera using the cartridge film described in scope (1).