JP2867089B2 - camera - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a camera, full especially comprise an exposure and film winding function, capable of performing immediately photographed to unexposed film preloaded
The present invention relates to a film-integrated camera .

[0002]

2. Description of the Related Art A film-integrated camera is known as a camera with a lens.
Film unit , also called `` film unit ''
The method comprising the camera with a photographic photographing function, only the shooting of a single film loaded as known is used, after the camera body taken out the exposed film is intended to be discarded Therefore, it is manufactured at a low cost with a simple structure.

[0003] Cameras are often purchased and used on the go when traveling or the like. However, it is hard to say that the camera is convenient to carry, and the camera has a photographic lens of f = 35 mm and the outer shape is 110 mm x 60 m.
Approximately 35 mm in size, it was inconvenient without getting into the shirt chest.

Since a simple single lens made of plastic is also used as a photographing lens, the focal plane is curved so that the center thereof protrudes to the rear side of the camera for aberration correction to improve image quality. I have.

[0005]

On the other hand, a light-shielding frame is provided between the focal plane and the photographing lens to prevent the incidence of unnecessary light and internal reflection as is well known. When the surface is curved, there has been a problem that the conventionally used opening having a rectangular shape and a flat, uniform light-blocking frame does not sufficiently block unnecessary light or reflected light.

The present invention has been made to solve this problem, and as a result, has realized a light-shielding frame capable of effectively shielding unnecessary light and reflected light incident on a curved focal plane. The purpose of the present invention is to provide a camera capable of obtaining the above.

[0007]

The object In order to achieve the above object, according to a camera provided with a curved in an arc shape along the film feeding direction the film surface, the inner <br/> side two sides extending in front Symbol fill beam feeding direction the light shielding frame having an opening and a curve convex to be achieved by a camera, characterized in that provided between the imaging lens and the screen frame.

[0008]

FIG. 1 shows a film integrated type of a camera according to the present invention.
This shows the appearance of a camera (hereinafter also referred to as the present camera). The camera is sold with 35 mm film (J135) loaded in advance, and after filming is completed, the film remains in the camera without being rewound. In this state, the film is sent to the maker side where the film is developed and printed.

[0009] The unexposed film used in the camera is loaded in a state in which it is contained in the patrone, and after the camera is made light-tight, the winding shaft on the film winding chamber side is driven to drive the film in the patrone. The entire film is wound into a film winding chamber.
The user winds up the film that has been shot in the patrone by winding the film each time shooting is performed.
Therefore, on the maker side, the photographed film can be taken out of the camera as a patrone in the light room.

The photographed film can be easily taken out by bending a part of the back cover. Therefore, if the back cover is replaced, an unexposed film is newly loaded and reused, that is, used as a reuse camera. You can do it.

As the patrone loaded in the camera, a patrone having an outer diameter of φ20.6 mm different from a generally used patrone (JIS K7528) is used.

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

This camera is provided with a cardboard carton on which a product name, a simple usage method, and the like are displayed on a part of its outer surface.

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

Reference numerals 10, 20, and 30 denote a camera body, a front cover, and a back cover, respectively, which are main components of the camera. Reference numeral 40 denotes a built-in flash unit.
Numerals 70 and 70 denote film winding, sector charge and film counter mechanisms, respectively.

When the camera body 10 is used alone, the film winding mechanism 50, the sector charging mechanism 60, and the members constituting the film counter mechanism 70 are mounted, and a shutter case 11 for accommodating a sector is mounted.

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

Further, on the front surface of the shutter case 11, a taking lens 12 having a single lens having a focal length f = 30 mm and an aperture of F9.5 is dropped, and has a slide 13A engaged with a guide pin 11B. Covered by the lens holder 13.

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 on the basis of holes 40A and 40B on the board which engage with guide pins 10B and 10C on the front of the camera body 10, respectively.

The strobe unit 40 is constructed such that upper and lower battery sections 41 are inserted into upper and lower slit holes 10D of the camera body 10 and protrude into a battery chamber on the back of the camera body 10 so that an AA battery E as a strobe charging power source is provided. Sandwich.

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

The lens holder 13 and the strobe unit 40
Is fixedly integrated with the camera body 10 by mounting the front cover 20 on the camera body 10.

Prior to mounting the front cover 20 on the camera body 10, the objective lens 21 of the finder is dropped on the front surface of the front cover 20 in advance and fixed by the engagement of the decorative cover 22. The makeup cover 22 has a guide pin 22A and four claws 22B on the back.
With holes 20A and 4 on the front of the front cover 20, respectively.
It is engaged with the locking portion 20B at the location and is attached.

The front cover 20 is further attached to the front surface of the camera body 10 after engaging and mounting an eyepiece 23 of a finder on the rear surface.

The front cover 20 has a hole 20C, a claw 20D, and three locking portions 20E on the rear surface thereof. The front cover 20 has a guide pin 10E, a claw 10F, and a locking portion 10G on the front surface of the camera body 10, respectively. Engage and attach.

The lens cover 13 and the flash unit 40 are fixed to the camera body 10 by engaging the front cover 20 with the camera body 10.

The camera body 10 with the front cover 20 attached
The cartridge P15 and the spool S2 with the leading end of the unexposed film F are respectively loaded in a cartridge chamber 15A and a scroll chamber (film winding chamber) 15B formed on the back surface.

The other end of the film F is locked on a spool S1 in the patrone P1, and even if the film in the patrone is once wound up by the spool S2 after the film is loaded, the other end is locked on the spool S1. Therefore, it can be wound into the patrone P1 every time the photographing is completed.

A back cover 30 is attached to the back of the camera body 10 loaded with the film F, so that the light shielding of the film F and the restriction on the focus surface position are maintained.

The back cover 30 has claws 30A and 30B on its front surface and locking holes 30C and 30D on its side surface.
The claw 30A and 30B are the locking parts of the camera body 10
Holes 30C and 30D on the other hand are 10H and 10J,
K and 10L are engaged and fixed.

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 operation.

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

FIGS. 3 and 4 show the above-mentioned respective mechanisms at angles viewed from the rear side of the camera.

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

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

The patrone P1 is loaded into the patrone chamber 15A such that the spool S1 of the patrone P1 engages with the fork of the hoisting fork 52. On the other hand, the spool S2 is also inserted into the scroll chamber 15B. Then, the tip of the film notch FN of the film F is positioned at the index 17 below the lower rail surface.
The film F is pulled out until it conforms to A, the leading end 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, a back cover 30 is put on the cover to make the cover light-tight.
Then, the camera in this state is attached to the film winding device, and the entire film F (with the other end not being detached from the spool S1 of the cartridge P1) is moved to the scroll chamber 15B.
And the loading of the film is completed. That is, by loading the film F in this manner, the film F is sequentially wound into the patrone P1 for each photographing operation. The photographed film is wrapped in the patrone P1, leaving the required length without the roll wrapped in the patrone. Therefore, this patrone can be taken out of the camera in a bright room.

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

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

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

Reference numeral 51 denotes a film winding knob. The film F loaded as described above is wound by turning the film winding knob 51 counterclockwise. A cam 55 coaxial with an eight-tooth sprocket gear 54 meshing with the perforation P of the film F and having a fan-shaped cam portion 55B at the bottom.
Is rotated exactly one turn in the counterclockwise direction by winding the film.

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

The rotation of the cam 55 in the counterclockwise direction naturally rotates the sector cam portion 55B in the counterclockwise direction as described above, and in the process, the charge lever 61 is moved by the sector cam portion 55B to the charge lever shaft 63. Is rotated clockwise against the spring force of a charge lever spring 64 that urges the counter lever in a counterclockwise direction, and the rising portion 65B of the sector lever 65 is rotated by a triangular ketobashi 61C provided on the charge lever 61
Is pressed, and eventually the vehicle gets over the rising portion 65B to charge the sector charging mechanism 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 on the sector lever 67.
The left end of the long hole is brought into contact with a pin 18B provided on the camera body 10 that guides the long hole slidably and rotatably, and the sector lever
The arm plate 65D provided on the camera body 10 is provided with a pin 18 provided on the camera body 10.
It comes into contact with E. A sector drive pin 65A for operating a sector 66 pivotally supported by a sector pin 18D provided on the camera body 10 is inserted into the fork of the sector 66.

As will be described later, the cam stopper after photographing is completed
The protrusion 62D of 62 is pulled out from the groove 55A of the cam 55,
The arm portion 57A of the hoisting stopper 57 changes from the state shown in the figure to change the arm portion 61A of the charge lever 61 and the arm portion of the cam stopper 62.
It comes off from each edge of 62A, and is in contact with the end face of the arm 61A by the spring force of the hoisting stopper spring 58 that urges clockwise. When the cam 55 rotates just once by the film winding as described above and the groove 55A of the cam 55 returns to the initial position, the spring force for urging the cam stopper 62 by the horizontal end of the charge lever spring 64 in the clockwise direction. As a result, the projection 62D of the cam stopper 62 jumps into the groove 55A. By this jumping operation, the locking of the arm portion 57A of the hoisting stopper 57, which has been locked on 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 so that the ratchet gear is actuated by the spring force of the winding stopper spring 58. The film winding knob 51 jumps into the tooth space of the gear 51A, thereby preventing 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 rotating further.

In the camera body 10, the tip of a reverse rotation preventing claw 53 utilizing the elasticity of a resin material is pressed against the ratchet gear 51A so as to prevent the film winding knob 51 from rotating in the opposite direction of winding. It has become.

By pressing the release button 25 of the front cover 20, a release button pin 25A implanted on the back of the release button 25
Operates in the direction of arrow A. That is, the front cover 20
When the camera is attached to the camera body 10,
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, the arm portion of the charge lever 61 is moved from the end surface of the arm portion 57A of the hoisting stopper 57.
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.

Then, the counterclockwise rotation of the charge lever 61 causes the ketobashi 61C of the charge lever 61 to rotate.
The rising portion 65B of the sector lever 65 is hit and comes off 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 returns to the original position due to the tensile force of the sector spring 67. Therefore, the sector drive pin 65A rotates the sector 66 about the sector pin 18D to expose the film and close it.

On the other hand, the cam stopper 62 also rotates in the counterclockwise direction together with the charge lever 61 as described above.
The projection 62D of 62 comes out of the groove 55A of the cam 55. Therefore, even if you stop pressing the release button,
The arm portion 57A of the charge lever 61 is urged clockwise by the spring force of the hoisting stopper spring 58.
Is stopped by the end face of
The projection does not lock the ratchet gear 51A of the hoisting knob 51. Therefore, the next film winding can be performed.

Next, the film counter mechanism will be described.

As described above, 72 engages with the V-groove 56A provided at the upper end of the cam shaft 56 implanted in the cam 55 which rotates integrally with the sprocket gear 54, so that the film is wound up by one frame and the cam shaft is rotated. Reference numeral 56 denotes an index gear that rotates clockwise by one tooth for each rotation.

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

A projection 72A is provided on the lower surface of the index platen gear 72, and when the film is wound up after the predetermined number of frames have been photographed, the projection 72A is brought into contact with the projection 61 of the charge lever 61.
E and another protrusion 62 </ b> E of the cam stopper 62, so as to break and enter. Then, the protruding portion 72A is connected to both the protruding portions 61.
The film is wound up by one frame by entering between E and 62E, and even when the cam 55 rotates once and the charging of the sector is completed, the two projecting portions 61E and 62E are brought into contact with the projecting portion 72A of the index wheel gear 72. The movement is blocked, the charge lever 61 cannot be operated, and the protrusion 62D of the cam stopper 62 is also in the groove of the cam 55.
You will not be able to jump into 55A. The arm portion 57A of the hoisting stopper 57 abuts on 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 locks the ratchet gear 51A. Also, it is impossible to operate the charge lever 61 to open and close the sector to expose the film.

When two frames of the film are wound up in this way, the index wheel 72 rotates by two teeth.
By this rotation, the projection 72A of the index plate gear 72 still holds the projection 61E to prevent the movement of the charge lever 61, but comes off the projection 62E of the cam stopper 62. Therefore, the protrusion 62D is formed in the groove 55A of the cam 55.
And the locking of the hoisting stopper 57 is released and the hoisting stopper
The winding knob 51 is locked by 57, and the film cannot be wound. Since the movement of the charge lever 61 is blocked as described above, the film cannot be exposed. In this way, the leading end of the film is prevented from being caught in the cartridge.

FIG. 5 is a cross-sectional view showing the configuration of the photographing optical axis portion of the present camera. As described above, the shutter case 11 has the photographing lens 12 and the lens holder 13 mounted on the front surface, and the shutter case 11 on the rear surface. Hold the sector 66 and hold the sector
14 are engaged and integrated.

The shutter case 11 is integrally formed by engaging the claw 11A shown in FIG. 2 formed on the sector holder 14 with the engaging portion 10A of the camera body 10 as described above. The rear end of 14 is inserted and pressed into the front end of a rectangular light-shielding tube 10R protrudingly formed on the camera body 10 to make the inside of the light-shielding tube 10R light-tight.

Further, by integrating the shutter case 11 and the camera body 10, the focus of the photographing lens 12 is curved in the film feeding direction of the camera body 10, and the rail surface 10M protruding cylindrically toward the back. Automatically, and an image of the subject whose aberration has been corrected is formed on the film F in contact with the rail surface 10M.

As described above, a single lens having a short focal length of f = 30 mm is used as the photographing lens 12 of the present camera, so that the amount of projection of the photographing lens portion is small and the camera is compactly formed. The image is improved by aligning the film surface with a cylindrical surface having a radius of curvature of 110 mm.

The inner surface of the light-shielding tube 10R has several times the normal roughness in order to prevent internal reflection due to the use of a short focus lens.
It is a black matte surface having a roughness of 10 μm to 25 μm.

Further, a thin plate-shaped light-shielding frame 10S, which has been subjected to a black matting treatment as shown in FIG. 6, is attached to the intermediate position of the inner surface of the light-shielding tube 10R by means such as bonding.

The light-shielding frame 10S is placed at a position covering only the light beam incident on the screen frame 16, thereby effectively preventing harmful reflection of unnecessary light incident on the inner wall of the light-shielding tube 10R close to the screen frame 16. doing.

As shown in FIG. 6A, the light-shielding frame 10S is assumed to have a sector shape similar to the position of the light-shielding frame corresponding to the curvature of the curved rail surface 10M. It has an opening A having a rectangular shape, that is, four sides in a straightened state in a developed state.

Therefore, the opening A is placed at a fixed positional relationship with the film F at any point of the center and the periphery of the screen, and covers all the photographing light beams incident on the screen frame 16. Unnecessary light and harmful internal reflected light that enter the outside of the screen frame 16 are efficiently shielded by the main body of the light shielding frame 10S.

When the light-shielding frame 10S is used in a state of a flat body without being deformed into a curved body, the opening A is required to have a greatly different distance from the film F between the center and the periphery of the screen. since the fill as shown in FIG. 6 (b)
The upper and lower sides extending in the film feeding direction are curved inwardly in a symmetrical shape corresponding to the distance to the film F, and on the film surface, they are lines parallel to the end face parallel to the film feeding direction. And the curved light-shielding frame 10 described above.
As in S, a function is provided to block unnecessary light and internally reflected light by covering only the imaging light flux.

[0067]

The present invention, will be unnecessary light and harmful internal reflection light incident on the screen is effectively blocked, and the result with contrast well with high quality photographs obtained lens shading frame Placed between the exposure frames
Sunlight directly incident on the lens
Reflected on the end face extending in the film feeding direction
The problem of exposure as a
The two sides extending in the film feeding direction of the opening are convex inward.
Disperse the light reflected at the end face because it is a line
Thus, a camera having a reduced ghost image can be provided.

[Brief description of the drawings]

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

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

FIG. 3 is an exploded 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 view showing a main part of the unit.

FIG. 6 is a perspective view of a light shielding frame provided in the unit.

[Explanation of symbols]

 10 Camera body 10M Rail surface 10R Light shielding tube 10S Light shielding frame 11 Shutter case 12 Shooting lens 13 Lens holder 14 Sector holder 16 Screen frame A Opening F Film

Claims (1)

(57) [Claims] 1. A camera having a film surface curved in an arc shape along a film feeding direction, comprising: a light-shielding frame having an opening having two sides extending in the film feeding direction and having a curved curve that is convex inward; A camera provided between a shooting lens and a screen frame.