JPH05281661A - Film unit provided with lens - Google Patents

Abstract

PURPOSE:To take a picture both in full and half sizes by performing improvement on a film unit provided with a lens only used for a panoramic size. CONSTITUTION:A sprocket gear 54 rotated by feeding a film, and a cam shaft 56 managing the actuation of a sector charge and a film counter and the stopping of winding film are provided so that they may respectively and independently rotate; when the picture is taken in the full size, both of them are directly linked and integrally actuated, and when the picture is taken in the half size, the cam shaft 56 is normally rotated once by the half rotation of the sprocket gear 54, and at the same time, the left half of an image frame is shielded by means of a light shielding board, so that the picture of half size can be taken by the same camera operation as the picture of full size.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film unit with a lens, which has an exposure function and a film winding function, and can immediately take a panoramic photograph of an unexposed film loaded in advance.

[0002]

2. Description of the Related Art A film unit with a lens is a so-called film-integrated camera having a function of taking a picture, which is also called a "shooting-only camera". Since it is used only for film shooting and the camera body is discarded after taking out the exposed film, it is manufactured at a low cost with a simple structure.

Since this type of camera is often used mainly at travel destinations, so-called standard size (24
In addition to a camera with a 36 x 36 mm screen, there is also a camera that can specialize in taking a panoramic size (12 x 36 mm) screen suitable for taking vast landscape photographs.

[0004]

However, when a commemorative photo of a person or the like is to be taken with the above-mentioned panoramic size camera, the screen is unnecessarily long, the composition of the composition is poor, and the film is wasted. It is also uneconomical because it leads to things.

As a result of solving and improving this point, the present invention provides
It is an object of the present invention to provide a film unit with a lens that enables not only a panoramic screen but also a screen suitable for recording general commemorative photographs and the like.

[0006]

SUMMARY OF THE INVENTION The above object is to attach a non-exposed film in advance to enable panoramic size photography and to switch between full size and half size photography with a lens. Achieved by the film unit.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, a film unit with a lens capable of taking a panoramic size photograph is modified so that a panoramic size full size and half size photograph can be taken.

First, the construction and operation of the lens-fitted film unit that enables panoramic size photography will be described.

FIG. 1 shows the external appearance of a film unit with a lens (hereinafter also referred to as the present camera) of the present invention, that is, a film-integrated camera, which is pre-loaded with a 35 mm film (J135) and sold for photographing. After the completion, the film is sent to the maker side without being rewound, and the film is developed and printed.

The unexposed film used in this camera is loaded in a cartridge, and after the camera is kept in a light-tight state, the winding shaft on the film winding chamber side is driven to drive the film inside the cartridge. Wind all the film into the film winding room.
The user winds the film every time the photograph is taken, so that the photographed film is wound in the patrone.
Therefore, on the maker side, the film that has already been taken can be taken out from the camera as a patrone in a bright room.

Further, the taken film can be taken out easily by bending a part of the back cover. Therefore, if the back cover is replaced, a new unexposed film is newly loaded and used as a reuse camera. You can also do it.

As the cartridge loaded in the camera, a cartridge having an outer diameter of φ20.6 mm, which is different from the cartridge (JISK7528) which is generally used, is used.

As a result, the thickness of the camera can be suppressed to about 24 mm except for the lens barrel portion having the taking lens, and an ultra-thin compact camera is realized.

The present camera is provided with a cardboard carton on which a product name and a simple usage method are displayed on a part of its outer surface.

FIG. 2 is a development view showing the structure of the camera.

Reference numerals 10, 20 and 30 denote a camera body, a front cover and a back lid, which are main constituent members of the camera, respectively, and 40 denotes a built-in strobe unit and 50 and 60.
Reference numerals 70 and 70 are film winding, sector charge and film counter mechanisms, respectively.

When the camera body 10 is used alone, each member constituting the film winding mechanism 50, the sector charge mechanism 60, and the film counter mechanism 70 is mounted, and the shutter case 11 for housing the sector is mounted.

The shutter case 11 is fixed by engaging claws 11A projecting on both sides with a locking portion 10A on the front surface of the camera body 10, and links the sector to the sector charge mechanism 60.

Further, on the front surface of the shutter case 11, a photographing lens 12 having a focal length f = 25 mm and an aperture of F9.5 is dropped and is slidably engaged with a guide pin 11B.
It is covered by a lens retainer 13 provided with A.

The camera body 10 and the shutter case 11 described above
Is made of a black matte plastic material having some elasticity, including the front cover 20 and the back cover 30 described above.

On the other hand, the strobe unit 40 is mounted and supported with reference to holes 40A and 40B on the substrate which engage with the guide pins 10B and 10C on the front surface of the camera body 10, respectively.

The upper and lower battery sections 41 integrated with the strobe unit 40 are inserted into the upper and lower slit holes 10D of the camera body 10 and projected into the battery chamber on the back side of the camera body 10 to form an AA battery E as a strobe charging power source. To pinch.

The integrated capacitor C is stored in a capacitor chamber formed under the shutter case 11.

The above-mentioned lens retainer 13 and strobe unit 40
The fixing and integration of the above with the camera body 10 is completed by mounting the front cover 20 on the camera body 10.

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 makeup cover 22 has a guide pin 22A and four nails 22B on the back.
The front cover 20 and the holes 20A and 4 on the front of the front cover 20, respectively.
It is attached by engaging with the locking portion 20B at the location.

The front cover 20 is further mounted on the front surface of the camera body 10 after the eyepiece lens 23 of the finder is engaged and mounted on the rear surface.

The front cover 20 is provided with a hole 20C, a claw 20D, and three engaging portions 20E on the back surface, and the front cover 20 has a guide pin 10E, a nail 10F and a side engaging portion 10G on the front of the camera body 10. It is fitted and attached.

By mounting the front cover 20 on the camera body 10, the lens retainer 13 and the strobe unit 40 are fixed to the camera body 10.

The camera body 10 with the front cover 20 attached
In the cartridge chamber 15A and the scroll chamber (film winding chamber) 15B formed on the back surface of the cartridge, the cartridge P1 and the spool S2 in which the leading ends of the unexposed film F are locked are loaded, respectively.

The other end of the film F is locked to the spool S1 in the cartridge P1. Even if the film in the cartridge is wound up by the spool S2 after the film is loaded, the other end is locked to the spool S1. Therefore, it can be rolled up in the Patrone P1 every 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 film F is protected from light and the focus surface position is restricted.

The back cover 30 is provided with claws 30A and 30B on the front surface thereof and locking holes 30C and 30D on the side surfaces thereof.
Claws 30A and 30B are engaged with the camera body 10 when mounted on the camera.
On the 10H and 10J, the one holes 30C and 30D are the nails 10 of the camera body 10.
It is fixed by engaging K and 10L.

After the back cover 30 is mounted, a predetermined film winding operation is performed to set a photographable screen, and the carton shown in FIG. 1 is mounted to complete the process.

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

FIG. 3 shows each of the above-mentioned mechanical parts at an angle when viewed from the rear side of the camera.

In the camera body 10, a cartridge chamber 15 is provided as two storage chambers for film winding and film loading in the same plane on both sides of the screen frame 16 which is an exposure unit.
A and a scroll chamber 15B are provided, and J135 caught in the cartridge P1 which is the storage container shown in FIG.
The film F is loaded.

The film F used in this camera of this embodiment is a roll film J135 or a slightly thin roll film having a thickness of 130 to 140 μm as in a general camera, and a spool of the cartridge P1 is previously stored in a dark room or the like using the cartridge as a container. The end portion is fixed to S1 and the film is wound up for a predetermined number of frames so that the film can be photographed, and a film of a certain length has come out from the film outlet of the cartridge P1. The film in this state will be loaded into the camera. The loading method will be described below.

The cartridge P1 is loaded in the cartridge chamber 15A so that the spool S1 of the cartridge P1 is engaged with the fork 52 of the hoisting fork 52. On the other hand, the spool S2 is also inserted in the scroll chamber 15B. Then, the tip of the film notcher FN of the film F is located at the lower portion of the lower rail surface, which is an index 17.
The film F is pulled out until it fits A, the tip of the film F is inserted into the slit SL of the spool S2, and the perforation P of the film F is hooked on the nail H.

Next, the back cover 30 is covered and the cover is made light-tight.
Then, this camera in this state is attached to the film winding device, and the entire film F (with the other end not separated from the spool S1 of the cartridge P1) is moved to the scroll chamber 15B.
The film is loaded by winding the film on the spool S2. That is, by loading the film F in this way, the film F is sequentially wound into the patrone P1 for each shooting, and when two films are fed in advance after the shooting of a predetermined number of films is completed, The photographed film is wound into the cartridge P1 while leaving the required length without the leading end being wound into the cartridge. Therefore, this cartridge can be taken out from this camera in a bright room.

Next, the mechanism of the main body will be described.

The camera body 10 includes a film winding mechanism 50 including a photographing lens 12, a sector charge mechanism 60,
The main mechanism of the film counter mechanism 70 is incorporated therein.

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

Reference numeral 51 is 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 wound up with one per piece having a length of eight perforations, which is the number of teeth of the sprocket gear, and the piece size is a so-called panorama size piece size of 12 × 36 mm.

A cam shaft 56 having a cam 55 is engaged with and integrated with the sprocket gear 54, and the cam 55 is simultaneously rotated counterclockwise by the rotation of the sprocket gear 54 when the film F is fed. ..

By the counterclockwise rotation of the cam 55, the fan-shaped cam portion 55B naturally rotates counterclockwise as described above, and in the process, the fan-shaped cam portion 55B moves the charge lever 61 and the charge lever shaft 63. Is rotated clockwise against the spring force of the charge lever spring 64 that urges the charge lever 61 in a counterclockwise direction, and the triangular ketobashi 61C provided on the charge lever 61 causes the rising portion 65B of the sector lever 65 to rise.
Is pressed, and the rising portion 65B is eventually overcome to charge the sector charge mechanism as shown in the figure.

Pin 65C of the sector lever 65 and the camera body 10
A sector spring 67 is stretched between the pins 18C provided at the sector lever 67, and the tensile force of the sector spring 67 causes the sector lever 65 to move.
The left end of the elongated hole is brought into contact with a pin 18B provided on the camera body 10 that guides the elongated hole of the camera in a slidable and rotatable manner, and the sector lever
Pin 18 provided on camera body 10 with arm plate 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 completed.
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 62A is in contact with the end surface of the arm portion 61A by the spring force of the hoisting stopper spring 58 which is displaced from each edge of the arm 62A and urges clockwise. 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. As a result, the protrusion 62D of the cam stopper 62 jumps into the groove 55A. By this jumping operation, the lock of the arm portion 57A of the hoisting stopper 57, which was locked at the end surface of the arm portion 62A of the cam stopper 62 at this time, is released.

The outer peripheral cylindrical surface of the film winding knob 51 is a ratchet gear, and the V-shaped projection at the tip of the winding stopper 57 is released by the release of the lock, and the spring force of the winding stopper spring 58 causes the ratchet to rotate. It jumps into the tooth groove of the gear 51A 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 winding direction. It has become.

By pressing the release button 25 of 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 attached to the camera body 10, the winding knob
51 By the operation of the tip of the release button pin 25A in the direction of arrow A 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 portion 57A of the hoisting stopper 57, the arm portion of the charge lever 61
The edge of 61A 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.

By rotating the charge lever 61 in the counterclockwise direction, the ketobashi 61C of the charge lever 61 becomes
The sector lever 65 is tapped on the rising portion 65B and then separated from 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 then 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 also rotates counterclockwise together with the charge lever 61 as described above,
The protruding portion 62D of 62 is removed from the groove portion 55A of the cam 55. Therefore, even if you stop pressing the release button, the winding stopper
The arm portion 57A of 57 is biased in the clockwise direction by the spring force of the hoisting stopper spring 58, but the arm portion 61A of the charge lever 61.
Is stopped by the end face of the
The shaped protrusion does not lock the ratchet gear 51A of the winding knob 51. Therefore, the next film winding can be performed.

Next, the film counter mechanism will be described.

As described above, 72 meshes with the V groove 56A provided at the upper end of the cam shaft 56 that is planted in the cam 55 that rotates integrally with the sprocket gear 54, and one frame of film is wound up to form a cam shaft. It is an exponential gear that rotates clockwise one tooth each time 56 rotates once.

An index plate 71 is printed on the upper surface of the index wheel gear 72 as an integrally molded product, and the number of remaining photographable films is displayed through the film counter window 26 on the upper surface of the front cover 20.

A projecting portion 72A is provided on the lower surface of the exponential gear 72, and the projecting portion 72A is projected by the next film winding after the photographing of a predetermined number of frames is completed.
It is designed to be inserted between the E and another protruding portion 62E of the cam stopper 62 so as to enter. Then, the projecting portion 72A is replaced by the two projecting portions 61.
By entering between E and 62E, the film is wound up by one frame, and even if the cam 55 makes one rotation and the charging of the sector is completed, both the projecting portions 61E and 62E become the projecting portion 72A of the exponential gear 72. As the movement is blocked, the charge lever 61 cannot operate and the protruding portion 62D of the cam stopper 62 is also in the groove portion of the cam 55.
You will not be able to jump into 55A. The arm portion 57A of the hoisting stopper 57 contacts the end face 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 locks the ratchet gear 51A. Also, it is not possible to operate the charge lever 61 to open and close the sector to expose the film.

In this way, when two frames of film are idled up, the index gear 72 rotates by two teeth,
By this rotation, the protruding portion 72A of the exponential gear 72 presses the protruding portion 61E at all to prevent the movement of the charge lever 61, but comes off from the protruding portion 62E of the cam stopper 62. Therefore, the protrusion 62D is the groove 55A of the cam 55.
Jumping up to the top, the locking of the hoisting stopper 57 is released and the hoisting stopper
Since the winding knob 51 is locked by 57, the film cannot be wound. Further, as described above, the movement of the charge lever 61 is blocked so that the film cannot be exposed. In this way, the leading edge of the film is prevented from being caught in the cartridge.

Next, the modified part according to the present invention will be described.

FIG. 5 shows the structure of the mechanical portion related to the sprocket gear 54. The cam shaft 56 is rotatably supported by the sprocket gear 54, and is rotated by a pin PIN on the shaft. Regulated but oblong hole 100
A clutch disc 100 that is slidable in the axial direction is supported via A.

Furthermore, the cam shaft 56 is the clutch disc 10
Gear G with multiple holes opened at equal intervals above and below 0
1 and G2 are respectively rotatably supported, and the pin PIN1 or PIN is generated by the vertical movement of the clutch board 100.
2 is engaged with the hole to rotate integrally with the gear G1 or the gear G2.

The gear G1 has the same number of teeth as the gear G integrated with the sprocket gear 54, and a pair of coaxial gears G1A meshing with the respective gears G and G1.
Is transmitted in the same direction with the same rotation ratio as the sprocket gear 54.

Further, the gear G2 has a ratio of the number of teeth of the coaxial gears G2A and G2B to the gear G,
The sprocket gear 54 is rotated in the same direction with a double rotation ratio.

Further, a knob 200 for switching the screen between full size and half size is provided on the upper part of the camera, and the peripheral edge of a disc 201 fixed to the lower end of the knob 200 is the circumference of the clutch disc 100. It is engaged with a circumferential groove 101 provided on the surface.

On the other hand, inside the light-shielding cylinder 10R formed in front of the screen frame 16 of the camera body 10, a shaft 203 as shown in FIG.
A light shielding plate 203 having A as a fulcrum is provided, and the knob 2
It is connected to an operating lever 202 fixed to the lower end of 00.

When the knob 200 is rotated clockwise to set the screen to the full size, as shown in FIG.
The stepped portion S of 1 rotates to enter the groove 101 of the clutch disc 100, whereby the clutch disc 100 is slid upward to move the pin PIN.
1 is engaged with the gear G1 and, on the other hand, FIG.
As shown in, the light shielding plate 203 rotates counterclockwise and retracts, and the entire area of the screen frame 16 is opened.

Therefore, in this state, by pressing the release button 25, a full size (12 × 36 mm) photograph is taken, and when the film is wound, the cam shaft 56 is integrated with the sprocket gear 54. Rotate to charge the sector and feed the film counter for each frame of full size screen.

Next, when switching to half-size (12 × 18 mm) photography, before the film winding operation, the knob 200 is turned counterclockwise to set the screen to half-size. As shown in FIG. 5B, since the stepped portion S of the disc 201 comes out of the groove 101 of the clutch disc 100, the clutch disc 100 slides downward, and the pin PIN2 engages with the gear G2 to cause the cam. The shaft 56 is integrated with the gear G2. Then, when the film winding operation is performed, when the sprocket gear 54 makes one half rotation, the cam shaft 56 makes one full rotation to complete the sector charge, and the film winding function operates. As a result, the film F becomes half. It will be sent by the size equivalent.

On the other hand, when the knob 200 is rotated counterclockwise, the light shielding plate 203 is rotated clockwise as shown in FIG. 6B to shield the left half of the screen frame 16.

Therefore, by pressing the release button 25 in this state, half-size photography is performed.

In taking a half-size photograph, a vertical line is placed in the center of the objective lens 21 of the finder, and the photographing range is determined by the field of view of the left half thereof.

In the case of the half size, the film counter is advanced by one frame every time two photographing operations are performed.
Also, by switching from the half size to the full size after winding the film, it is possible to avoid the film from being idle.

[0073]

According to the present invention, it is possible to realize a panoramic size film-integrated camera that enables half-size photography by extremely small-scale modification.
As a result, a useful lens-equipped film unit that can be used for traveling landscape photographs and souvenir photographs of people etc. was provided.

[Brief description of drawings]

FIG. 1 is an external perspective view of a film unit with a lens according to the present invention.

FIG. 2 is an exploded perspective view showing a configuration of the unit.

FIG. 3 is a developed perspective view showing a film winding mechanism and the like of the unit.

FIG. 4 is an explanatory diagram of a film loaded in the unit.

FIG. 5 is a cross-sectional configuration diagram of a modified portion according to the present invention.

FIG. 6 is a plan view of an essential part of the modified part.

[Explanation of symbols]

 10 Camera body 12 Lens for shooting 16 Screen frame 20 Front cover 54 Sprocket gear 55 Cam 55A Groove 55B Fan-shaped cam 56 Cam shaft 72 Index board gear 100 Clutch board 101 Groove 200 Knob 201 Disc 202 Actuator 203 Light shield

Claims (1)

[Claims] 1. A film unit with a lens, wherein an unexposed film is loaded in advance to enable panoramic size photography and full-size and half-size switching photography.