JPH07209708A - Film unit with lens - Google Patents

Abstract

PURPOSE:To use a sprocket for the detection of the feeding of one frame and to obtain a film unit with a lens having a compact mechanism part, at a low cost by forming each of specific first and second perforation groups on a CONSTITUTION:The first perforation group F2 that plural perforations are pierced in one frame of a photographic picture and the second perforation group F3 in which one perforation is pierced in one frame of the photographic picture are formed on both side edge parts in the width direction of the film respectively. In the unit, the first perforation group F2 is used for the charging of a shatter, the sending of a counter and the detection of the feeding of one frame. Thus, the sprocket can be used for the charging of the shatter, the sending of the counter and the detection of the feeding of one framellinked with the feeding of the film by the first perforation group F2, so that the film unit with the lens of the compact mechanism part can be provided at the low cost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens-fitted film unit equipped with a simple camera mechanism and preloaded with unexposed film.

[0002]

2. Description of the Related Art Japanese Patent Publication No. 4-501016 discloses a shooting screen 1
A film processing apparatus has been disclosed in which only one perforation is provided for a frame, and photographic information is magnetically recorded on the magnetic layer of the film.

Japanese Unexamined Patent Publication No. 4-355438 discloses a camera in which two perforations are provided for each frame of a photographing screen and the photographing information is magnetically recorded on the magnetic layer of the film.

In Japanese Patent Laid-Open No. 5-188448, one perforation is provided for each frame of the photographic screen, one at each end in the film width direction, and the photographic information is magnetically recorded on the magnetic layer of the film. Used for shutter charge, counter feed, and single-frame feed detection, and with the presence of the other perforation, it is a film taken with a lens-equipped film unit, and it is possible to visually confirm that the film has no magnetically recorded shooting information. A film unit is disclosed.

[0005]

In the above conventional technique, since one or two perforations are provided for one frame of the photographing screen, shutter charging, counter feeding,
The structure for single-frame feed detection becomes more complicated and larger than the conventional sprocket system. So smaller,
It is not suitable for a film unit with a lens that aims at a lower price.

On the other hand, for a normal camera, if one or two perforations are provided on one side of the film width direction for one frame of the photographing screen and a magnetic layer is provided on the other side, the film is standardized. It is desirable to be able to easily distinguish visually from a film taken with a lens-equipped film unit in which magnetic recording is difficult.

The present invention proposes a film unit with a lens that incorporates a film that solves the above two problems.

[0008]

According to the present invention, there is provided a lens-equipped film unit according to the invention of the present application, which is preloaded with an unexposed film and has a feeding means for feeding the film. A first perforation group is formed by punching a plurality of perforations on one frame of the shooting screen at one side edge, and one or two perforations are made on one frame of the shooting screen at the other side edge in the width direction. The second perforation group is formed, and the feeding means is configured to feed the film using the first perforation group.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to FIGS.

FIG. 1 shows an external view of a lens-equipped film unit of the present invention (hereinafter also referred to as the present unit), which is provided with a film pre-loaded in a camera and is not rewound after photographing is finished. The film is stored in the camera, sent to the developing station, taken out of the camera, and developed and printed.

The unexposed film used in this unit is loaded in a state of being wound on a spool, and is wound into the cartridge by winding it up every time photographing is performed. Therefore, in the photo lab, the film that has been photographed can be taken out from the camera in the bright room.

The taken film can be easily taken out by bending a part of the back cover. Therefore, the camera part is checked, a new unexposed film is loaded, and the back cover is installed on the manufacturer side. If it is replaced, it can be reused.

In the figure, 1 is a taking lens, 2 is a front cover, 3 is a back cover, 4 is a viewfinder, 5 is a release button,
6 is a film counter window, 7 is a stroboscopic light emission window, 8 is a charging lamp window, and 9 is a carton. The carton 9 is a cardboard paper cover, on the outer surface of which a product name, a simple usage method, etc. are displayed, and the carton 9 is provided by mounting it on the left camera.

FIG. 2 is a view of a film used in the lens-fitted film unit of this embodiment, in which the film F is pulled out from the cartridge P. The width of the film F and the shooting screen F1 are the same as those of normal J135 film, but the first perforation is formed by punching eight perforations for one frame of the shooting screen at one side edge in the width direction of the film. A group F2 and a second perforation group F3 in which one perforation is perforated for one frame of the photographing screen are formed on the other side edge portion. As will be described later, the first perforation group F2 is used for shutter charging, counter feeding, and one-frame feeding detection in this unit. The second perforation group F3 provided on the other side is not used in this unit,
It is used for film feeding during film processing in a laboratory after shooting. Further, when a film having a second perforation group F3 on one side and a magnetic layer on the other side is standardized, it is distinguished from a film taken by a lens-equipped film unit in which magnetic recording is difficult due to cost. The perforation group F2 of No. 1 makes it easy to visually confirm.

FIG. 3 is a development view showing the structure of a film unit with a lens using the film shown in FIG.

Reference numerals 10, 20 and 30 denote a camera body, a front cover and a back cover, which are main components of the camera,
Reference numeral 40 is a built-in strobe unit, and 50, 60 and 70 are film winding, sector charge and film counter mechanisms. When the camera body 10 is alone,
Each member constituting the film winding mechanism 50, the sector charge mechanism 60 and the film counter mechanism 70 is mounted, and further,
Shutter case that contains sectors not shown in the figure
11 is installed.

The shutter case 11 has claws 11 protruding from both sides.
A is engaged and fixed to the locking portion 10A on the front surface of the camera body 10, and the sector is linked to the sector charge mechanism 60. Further, on the front surface of the shutter case 11, a lens 12 having a focal length f = 30 mm and a photographing lens 12 having an aperture of F9.5 is dropped, and a lens holder 13A having a slit 13A that engages with a guide pin 11B. Covered by 13.

The camera body 10 and the shutter case 11, including the front cover 20 and the back cover 30, are both formed of a black matte plastic material having a slight elasticity.

On the other hand, the strobe unit 40 is the camera body 10
It is mounted and supported on the basis of holes 40A and 40B on the substrate which engage with the front guide pins 10B and 10C, respectively. The strobe unit 40 is integrated with the upper and lower battery contact pieces 41 of the camera body.
10 The upper and lower slit holes 10D are inserted to protrude into the battery chamber on the rear surface of the camera body 10 to sandwich the power supply battery E, which is an AA battery as a strobe charging power supply. Further, the integrated main capacitor C is stored in a capacitor chamber formed under the shutter case 11.

The lens presser 13 and the strobe unit 40 are fixedly integrated with the camera body 10 by attaching the front cover 20 to the camera body 10.
It will be completed by mounting on.

Prior to mounting the front cover 20 on the camera body 10, an objective lens 21 of a finder is dropped in front of the front cover 20 and is fixed by engaging a decorative cover 22. The decorative cover 22 has a guide pin 22A and four claws 22B projectingly provided on the back surface thereof, and the decorative cover 22 is attached by engaging the holes 20A on the front surface of the front cover 20 and the locking portions 20B at four locations. The front cover 20 is further mounted on the front surface of the camera body 10 after the eyepiece 23 of the finder is engaged and attached to the back surface. The front cover 20 has a hole 20C, a claw 20D, and three locking portions 20E on the back surface, and each of them has a guide pin 10E on the front of the camera body 10.
It is attached by engaging with the claw 10F and the side locking portion 10G. By attaching the front cover 20 to the camera body 10, the lens retainer 13 and the strobe unit 40 are attached to the camera body 10.
Fixed against. Camera body with front cover 20 attached
In the cartridge 10, a cartridge chamber and a scroll chamber (neither shown) formed on the back surface thereof are loaded with a cartridge S and a spool S2 in which the leading ends of the unexposed film F are locked, respectively.

The rear end of the film F is locked to the spool S1 in the cartridge P, and even if the film in the cartridge is loaded by the spool S2 after the film is loaded, the other end is locked to the spool S1. It can be rolled up in the Patrone P each time the shooting is completed. A back cover 30 is attached to the back surface of the camera body 10 in which the film F is loaded, so that the light shielding of the film F and the regulation of the focus surface position are maintained.

The back cover 30 is provided with nails 30A and 30B on the front surface thereof, and holes 30C and 30D for locking on the side surfaces thereof and one hole (not shown). 30B is fixed to the locking portions 10H and 10J of the camera body 10, and one hole (not shown), which is one of the holes 30C and 30D, is engaged with one of the nails 10K and 10L of the camera body 10, which is not shown, to be fixed. To be done. After the back cover 30 is mounted, a predetermined film winding operation is performed to set a photographable screen, and the carton 9 shown in FIG.

Next, details of the film winding mechanism 50, the sector charge mechanism 60 and the film counter mechanism 70 will be described.

FIG. 4 is a rear perspective view of each mechanism of the camera as seen from the rear side.

The camera body 10 has a screen frame 16 which is an exposure unit.
A cartridge chamber 15A and a scroll chamber 15B are provided as two storage chambers for film winding and film loading in the same plane on both sides of the film F, and the film F wound on the cartridge P shown in FIG. Is to be loaded. The cartridge P is inserted into the cartridge chamber 15A, and the spool S1 of the cartridge P is a winding fork.
It is loaded so as to engage the bifurcated portion of 52. On the other hand, the spool S2 is also inserted in the scroll chamber 15B.

Next, the back cover 30 is covered and the cover is made light-tight. Then, the camera in this state is attached to a film winding device (not shown), and the entire film F (however, the other end is within a range where it does not separate from the spool S1 of the cartridge P) is wound onto the spool S2 of the scroll chamber 15B to transfer the film. Loading is over. That is, film F
By loading the film F, the film F is sequentially wound into the patrone P for each shooting, and in the present embodiment, after the shooting of a predetermined number of frames is finished, when the two frames are fed in the forward direction, the leading end portion of the film F is The film portion that has been photographed is completely wound into the cartridge P, leaving the required length, without being wound into the cartridge. Therefore, this cartridge P can be taken out from this camera in a bright room.

Next, the mechanism of the main body will be described. The film winding mechanism, including the shooting lens 12, is mounted on the camera body 10.
50, sector charge mechanism 60 and film counter mechanism 70
The main mechanism of is incorporated.

First, the film winding mechanism and the sector charge mechanism will be described.

Reference numeral 51 denotes a film winding knob, and the film F loaded as described above is wound up by rotating the film winding knob 51 counterclockwise. A cam 55 coaxial with an eight-toothed sprocket gear 54 meshing with the perforation P of the film F and having a fan-shaped cam portion 55B at the bottom.
Is designed to rotate exactly once counterclockwise by winding the film.

That is, the film is rolled up with the length of eight perforations, which is the number of teeth of the sprocket gear, as one frame, and the screen size is a so-called full size.
It is 24 mm x 36 mm.

When the cam 55 rotates counterclockwise, the fan-shaped cam portion 55B also rotates counterclockwise, and in the process, the fan-shaped cam portion 55B rotates.
55B A charge lever spring that biases the charge lever 61 counterclockwise about the charge lever shaft 63 as a rotation axis.
Rotate clockwise against the spring force of 64, charge lever
By the triangular ketobashi 61C provided on 61, the rising portion 65B of the sector lever 65 is pressed, and eventually the rising portion 65B.
After passing over, the sector charge mechanism is charged as shown in the figure.

The pin 65C of the sector lever 65 and the camera body 10
A sector spring 67 is stretched between the pins 18C provided in the sector lever 67, and the tensile force of the sector spring 67 causes the sector lever 65 to
The left end of the long hole is brought into contact with the pin 18B provided on the camera body 10 which guides the long hole of the slot slidably and rotatably, and the sector lever
Pin 18 provided on camera body 10 with arm 65D provided on 65
It comes in contact with E. Further, a sector drive pin 65A for actuating the sector 66 pivotally supported by the sector pin 18D provided on the camera body 10 is inserted in the forked portion of the sector 66.

As will be described later, the cam stopper after the shooting is finished.
The projecting portion 62D of 62 is removed from the groove portion 55A of the cam 55,
The arm portion 57A of the hoisting stopper 57 changes from the state shown in the drawing to change the arm portion 61A of the charge lever 61 and the arm portion of the cam stopper 62.
The arm spring 61A is in contact with the end face of the arm portion 61A by the spring force of the hoisting stopper spring 58 that is urged in the clockwise direction, being separated from each edge of the arm portion 62A. When the cam 55 rotates exactly once as described above by the film winding and the groove 55A of the cam 55 returns to the initial position, the spring force that biases the cam stopper 62 in the clockwise direction by the horizontal end portion of the charge lever spring 64. By cam stopper
The protruding portion 62D of 62 will jump into the groove 55A. Then, due to this jumping operation, the hoisting stopper 57 that is locked to the end surface of the arm portion 62A of the cam stopper 62 at this point.
The arm 57A is released from the lock.

The outer cylindrical surface of the film winding knob 51 is a ratchet gear.
The V-shaped projection at the tip of 57 jumps into the tooth groove of the ratchet gear 51A by the spring force of the winding stopper spring 58, and prevents the film winding knob 51 from rotating in the counterclockwise direction. That is, when the film winding is completed, the film winding knob 51 is prevented from further winding rotation.

Further, in the camera body 10, the tip of the reverse rotation preventing claw 53 utilizing the elasticity of the resin material is pressed against the ratchet gear 51A so that the film winding knob 51 is prevented from rotating in the opposite direction. Has become.

By pressing the release button 25 on the front cover 20, a release button pin 25A is planted on the back surface of the release button 25.
Operates in the direction of arrow A. That is, the front cover 20
When the is attached to the camera body 10, the hoist knob
51 By the operation of the tip of the release button pin 25A in the arrow A direction described above, the hoisting stopper 57 rotates counterclockwise against the spring force of the hoisting stopper spring 58. Then, from the end surface of the arm 57A of the hoisting stopper 57, the arm 61A of the charge lever 61
The edge portion of the charge lever 61 is disengaged, and the charge lever 61, and thus the cam stopper 62, is rotated counterclockwise by the spring force of the charge lever spring 64.

The charge lever 61 is rotated counterclockwise by the spring force of the charge lever spring 64, which is stronger than the sector spring 67.
Hits the rising portion 65B of the sector lever 65, and then comes off the rising portion 65B. Therefore, the sector lever 65 rotates clockwise around the pin 18B in the long groove of the sector lever against the tensile force of the sector spring 67, and returns to the original state by the tensile force of the sector spring 67. Therefore, the sector drive pin 65A rotates the sector 66 around the sector pin 18D to expose the film and then closes it.

On the other hand, the cam stopper 62 is also the charge lever 61.
Rotate counterclockwise along with the protrusion of the cam stopper 62.
62D comes out of the groove 55A of the cam 55. Therefore, even if you stop pressing the release button, the arm 57
A is biased in the clockwise direction by the spring force of the hoisting stopper spring 58, but is stopped by the end face of the arm portion 61A of the charge lever 61 and stops, and the V-shaped protrusion at the tip of the hoisting stopper 57 is hoisted. Do not lock the ratchet gear 51A of the knob 51. Therefore, the next film winding can be performed.

Next, the film counter mechanism will be described.

Reference numeral 72 meshes with a V groove 56A provided at an upper end of a cam shaft 56 which is planted in a cam 55 which rotates integrally with the sprocket gear 54, one film of film is wound up, and the cam shaft 56 makes one rotation. It is an exponential gear that rotates one tooth each time in a clockwise direction. An index board 71 is printed on the upper surface of the index board gear 72 as an integrally molded product, and the remaining filmable number of the film is displayed from the film counter window 26 on the upper surface of the front cover 20. A protrusion 72A is provided on the lower surface of the index board gear 72.
Is provided, and by the next film winding after the photographing of a predetermined number of frames is completed, the projecting portion 72A is split and inserted between the projecting portion 61E of the charge lever 61 and another projecting portion 62E of the cam stopper 62. There is. Then, the projecting portion 72A is inserted between the projecting portions 61E and 62E, so that the film 1
Even when the frame 55 is wound up and the cam 55 makes one revolution and the sector charge is completed, the projecting portions 61E and 62E are prevented from moving by the projecting portion 72A of the exponential gear 72, so that the charge lever 61 cannot be operated and the cam stopper cannot be operated. The protruding portion 62D of 62 cannot also jump into the groove portion 55A of the cam 55. Then, the arm portion 57A of the hoisting stopper 57 comes into contact with the end surface of the arm portion 62A of the cam stopper 62 by the spring force of the hoisting stopper spring 58, and the V-shaped projection at the tip of the hoisting stopper 57 does not lock the ratchet gear 51A. However, it is also impossible to operate the charge lever 61 to open and close the sector to expose the film.

In this way, in the present embodiment, when two frames of film are idle-fed, the index plate gear 72 rotates by two teeth. This rotation causes the protrusion 72A of the index plate gear 72 to rotate.
Hold down the protruding portion 61E and press the charge lever 61E.
Movement of the cam stopper 62, but another protrusion 62E of the cam stopper 62
It is supposed to come off. Therefore, the protruding portion 62D jumps into the groove 55A of the cam 55, the winding stopper 57 is disengaged, and the winding stopper 57 locks the winding knob 51, so that the film cannot be wound. And charge lever
Since the movement of 61 is blocked, the film cannot be exposed. In this way, the tongue at the leading end of the film is prevented from being caught in the cartridge, and the tongue of the required length is secured. Therefore, even if a cartridge having a small outer diameter is used to make the camera compact, there is no problem in pulling out the film from the cartridge at the time of development.

As described above, the above embodiment uses the film shown in FIG. 2, but the present invention is not limited to this. As shown in FIG. 5, the perforation position is reversed from that in FIG. The film can also be applied to a film unit with a lens by changing the winding mechanism and the like.

Further, as shown in FIG. 5, perforations may be provided on both edges only at the tip, or on either side. Further, eight perforations or one perforation need not be provided at all on the front end side of the first piece or the rear end side of the last piece.

Further, the eight perforations may be any number as long as the sprocket can be easily driven, and six perforations other than eight are preferable. Further, instead of one perforation, two pieces in total may be provided in front of and behind the piece.

In addition, the shape of the tip of the film may be a shape having an inclination opposite to that shown in FIGS. 2 and 5, or may be a shape having no inclination and perpendicular to the feeding direction.

Although the present invention is intended for a film unit with a lens, the present invention is applied to a low-priced, simplified type camera which does not have a function of magnetically recording photographic information even in a camera in which a normal user exchanges a film. can do.

[0048]

According to the first to third aspects of the present invention, since the sprocket can be used for the shutter charge, the counter feed, and the one-frame feed detection which are interlocked with the film feed by the first perforation group, It is possible to realize a film unit with a lens that has a small mechanism part at a low price.

Further, even if a film having one or two perforations for one frame of the photographic screen and a magnetic layer is standardized and widely marketed, the photographic information can be recorded in the film unit with a lens because of the cost. Magnetic recording is difficult and difficult to realize. Therefore,
The first perforation group makes it possible to easily visually distinguish between those films and the films photographed by the lens-equipped film unit.

Further, a second perforation group, which is not necessary when photographing a film unit with a lens, but is the same as a film coated with a magnetic layer, in which one or two perforations are perforated for one frame of a photographing screen. By having the above, it can be used for film feeding at the time of processing in a laboratory after shooting, and a common processing machine can be used.

[Brief description of drawings]

FIG. 1 is an external perspective view of a film unit with a lens.

FIG. 2 is a diagram of a film used in the film unit with a lens of the present embodiment.

3 is a development view of a film unit with a lens using the film of FIG.

FIG. 4 is a rear perspective view of each mechanism of the camera as viewed from the rear side.

FIG. 5 is another example of the film.

[Explanation of symbols]

 P Patrone F Film F2 First perforation group F3 Second perforation group 10 Camera body 20 Front cover 30 Back cover 50 Film winding mechanism 60 Sector charge mechanism 70 Film counter mechanism

Claims (4)

[Claims] 1. A film unit with a lens, which is preloaded with an unexposed film and which has a feeding means for feeding the film, wherein the film has one side edge in the width direction with respect to one frame of a photographing screen. A first perforation group having a plurality of perforations perforated therein, and a second perforation group having one or two perforations per one frame of the photographing screen formed at the other side edge portion in the width direction, The lens-equipped film unit, wherein the feeding means feeds the film using the first perforation group. 2. The lens-equipped film unit according to claim 1, wherein the feeding unit has a sprocket. 3. The lens-equipped film according to claim 1, wherein the first perforation group has six or eight perforations per one frame of the photographing screen. unit. 4. The lens-equipped film unit according to claim 1, wherein the second perforation group is used for film feeding in development or print processing after photographing. .