JP3125232B2 - Film unit with lens - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film unit provided with a lens and having a function of exposing and winding a film and capable of immediately taking a picture of a previously loaded unexposed film.

[0002]

2. Description of the Related Art A film unit with a lens is a so-called film-integrated camera having a photographing function, which is also referred to as a "clear camera". It is used only for photographing film, and after taking out the exposed film, the camera body is discarded. Therefore, the camera body is manufactured with a simple structure at low cost.

[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 because it did not fit in the breast pocket of the shirt.

[0004]

However, despite the fact that it is called a "camera-clear camera", camera functions have become more sophisticated as in the example of a film unit with a lens built in a strobe issuing device due to the diversification of shooting purposes. There is a tendency to increase costs because of this.

Further, from the viewpoint of resource reuse,
The applicant of the present invention has proposed a camera that can be reused as a “camera clearly”, that is, a reusable camera.To that end, while improving the durability of the camera and making it a component that can be used many times, There has been a demand for a camera that operates stably without changing its function and performance even when assembled or used many times. This has been demanded as a simple and inexpensive part that operates stably while making it possible to eliminate the need for adjustment while keeping the part in place. I have.

As a result of solving the above problems, the present invention can be reused so that a camera that operates stably without changing its function and performance even when assembled or used many times can be reused. The purpose is to provide a film unit with a lens as a reused camera.

[0007]

SUMMARY OF THE INVENTION The object of the present invention is to make it possible to take a picture immediately with a built-in film, and to wind up the film by a winding operation of a wind-up knob, and to take the film which has been taken up successively into a cartridge. A sprocket meshing with the film, a cam coaxial with the sprocket, a stop member engaging the cam to stop rotation of the cam, and engaging the cam by urging means of the stop member. A restriction member for restricting the movement from the position to the position for releasing the lock and a restriction member for restricting the winding rotation of the hoisting knob, and the restriction member is moved by a release operation, whereby the restriction of the movement of the stop member is released. Even if the locking between the stop member and the cam is not released by the urging means and the locking is continued, the When the regulating member further moves, the regulating member presses the stop member in a direction to release the lock, moves the stop member, and releases the lock between the cam and the stop member. This is achieved by a lens-fitted film unit.

[0008]

FIG. 1 shows the appearance of a film unit with a lens according to the present invention (hereinafter also referred to as the present camera). The present camera is provided with a 35 mm film (J135) loaded in advance. The film is sent to a developing station with the film stored in the camera without rewinding, the film is taken out from the camera, and the film is developed and printed.

An unexposed film used in the camera is loaded in a state of being wound on a spool, and is wound up in a patrone by winding up each time a photograph is taken.
Therefore, in the photo lab, the photographed film can be taken out of the camera in a bright room.

Further, it is possible to take out the photographed film easily 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 replaced by the manufacturer. Then it can be reused.

In the following, a small patrone will be described as an embodiment, but the present invention is also applicable to a film unit with a lens using a normal patrone.

As the patrone loaded in the camera, a patrone having an outer diameter of φ20.6 mm different from a commonly used patrone (JIS K7528) is used. 10 in it
A relatively thin film of 0 to 140 μm is wound on a spool having a diameter of about 10 mm and is incorporated. As a result, the thickness of the camera can be reduced to around 24 mm except for the lens barrel having the taking lens, and an ultra-thin compact camera has been realized.

This camera is provided with a cardboard carton (paper cover) on which a product name and a simple method of use 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 strobe unit.
Reference numerals 60 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 molded from 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 composed of AA batteries serving as a strobe charging power source, in which upper and lower battery contact pieces 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. A certain power supply battery E is sandwiched.

The integrated main 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.
, Which are respectively engaged with holes 20A on the front surface of the front cover 20 and four locking portions 20B to be 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 P1 and the spool S2 with the leading end of the unexposed film F are respectively loaded into a patrone chamber and a scroll chamber (both not shown) formed on the back surface thereof.

The leading end of the film F is locked on a spool S1 in a patrone P1, and the diameter of the spool is 9 to 11 mm in order to make the camera smaller. After the film is loaded, the film in the patrone is once wound up by a spool S2. However, since the other end is locked to the spool S1, it can be wound into the cartridge 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 is provided with claws 30A and 30B on the front surface thereof and locking holes 30C and 30D on the side surface thereof and one hole (not shown). And 30B are in the locking parts 10H and 10J of the camera body 10, while the holes 30C and 30D are
One hole (not shown) is engaged with and fixed to the claws 10K and 10L of the camera body 10 and one claw (not shown).

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 screen.

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

FIG. 3 shows each of the above-mentioned mechanisms at an angle as viewed from the back side of the camera, and FIG. 4 shows the patrone and the spool in which the film is wrapped, as viewed from the direction in which the spool is inserted into the camera body. It is a thing.

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, in this embodiment, the film F is pulled out until the tip of the film notch FN of the film F matches the index 17A at the lower portion of the lower rail surface, and the tip of the film F is inserted into the slit SL of the spool S2. The perforations P are locked to the claws H. The film notch FN has a number of holes formed in the tongue portion at the leading end of the film to indicate the emulsion lot number and the like of the film.

Next, a back cover 30 is put on the cover to make the cover light-tight.
Then, the camera in this state is mounted on 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, and after the photographing of a predetermined number of frames is completed, in this embodiment, two frames are skipped. Thus, the photographed film portion is completely wrapped in the patrone P1, leaving the required length without being 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.

Reference numeral 51 denotes a hoisting knob protruding from the upper right side of the rear of the camera, and 51A and 52 denote ratchet gears and hoisting forks, respectively, which are coaxially integrated with the hoisting knob 51. The hoisting fork 52 protrudes into the patrone chamber 15A and is loaded prior to completion of the camera.
Is engaged.

Numeral 54 designates an eight-tooth sprocket gear provided with its tooth tip exposed on the rail surface 17, and numeral 55 designates a cam which is a groove into which a projected portion 62D of a cam stopper 62 jumps into one of the outer peripheral portions.
A two-stage cam having a fan-shaped cam portion 55B having the same diameter as the outer peripheral portion of the cam 55 is provided at the lower portion on the opposite side of the groove portion 55A. The two-stage cam 55 has a cam shaft 56 implanted in the vertical direction by integral molding. The cam shaft 56 has an oval hole provided at the center of rotation of the sprocket gear 54 at the bottom, and has the same shape at the tip. The shaft 56 is inserted and can be integrally rotated. The tip of the upper camshaft 56 is provided with a V-shaped groove 56A and meshes with an index wheel 72 of the film counter mechanism.

That is, when the hoisting knob 51 is rotated in the counterclockwise direction, the spool S1 rotates to wind the film F into the cartridge P1, and at this time, the film F engages the sprocket gear 54 meshing with the perforation P. Thus, the cam 55 is driven and rotated counterclockwise.

Reference numeral 61 denotes a charge lever rotatably fitted to a charge lever shaft 63. A charge lever spring 64 acts between a pin 18A provided on the camera body 10 and a concave portion 61D of the charge lever 61. And urges the charge lever 61 counterclockwise.

Reference numeral 62 denotes a cam stopper rotatably fitted to the charge lever shaft 63. The horizontal end of the charge lever spring 64 has a concave portion 61 of the charge lever 61.
D and a stopper pin 62B implanted in the cam stopper 62
, And urges the cam stopper 62 to rotate clockwise with respect to the charge lever 61. The arm 61A of the charge lever 61 is provided with a protrusion 61E.
Is provided with another projection 62E. When the cam stopper 62 biases the charge lever 61 in the clockwise direction, the cam stopper 62
The other protruding portions 62E abut on each other, and eventually both are integrally rotatably fitted to the charge lever shaft 63. Therefore, the charge lever 61 is
As a result, the charge lever 61 and the cam stopper 62 as a unit are similarly urged in the counterclockwise direction.

As will be described later, the positions of the charge lever 61 and the cam stopper 62 after the photographing are completed are rotated and displaced counterclockwise from the positions shown in the drawing, and the projecting portion 62D of the cam stopper 62 is Although it is in a state of being removed from 55A, the movement to the illustrated positions (the charging completion position of the sector charging mechanism and the winding completion position of the film winding mechanism) is performed as follows.

First, the movement of the sector charge mechanism to the charge completion position will be described.

That is, the cam 55 rotates counterclockwise together with the sprocket gear 54 via the film with the winding rotation of the winding knob 51 in the counterclockwise direction. During the rotation, the tip of another arm portion 61B of the charge lever 61 is pushed by the sector cam portion 55B below the cam 55, and the charge is performed against the counterclockwise spring force of the charge lever spring 64. The lever 61 rotates clockwise.

Reference numeral 65 denotes a sector lever for exposing an image formed by the photographing lens 12 onto a film and operating a sector 66 supported by a sector pin 18D provided on the camera body 10. The sector drive pin 65A implanted in the sector lever 65 is inserted into the fork of the sector 66, and the pin 18B is provided on the camera body 10 so as to guide the slot of the sector lever 65 in a slidable manner. And the sector spring 67 is
Is stretched between the pin 65C and the pin 18C provided on the camera body 10, and is urged by a sector spring 67 so that the left side of the long hole of the sector lever 65 in FIG. Further, the sector lever 65 has a rising portion 65B and an arm plate.
65D is provided, and arm plate 65D is a pin provided on camera body 10.
18E is also urged by the sector spring 67 so as to come into contact therewith.

The vertical direction of the sector lever 65 is regulated by a pressing plate provided on a shutter case (not shown) attached to the camera body 10 from the front side so that the sector lever 65 does not come off the pin 18B.

A triangular ketobashi 61C is provided near the middle of the arm of another arm 61B of the charge lever 61,
By the clockwise rotation of the charge lever 61, the rising portion 65B of the sector lever 65 is pressed by the sticking portion 61C, so that the sector lever 65 is guided by the pin 18B in the elongated hole of the sector lever 65 and the tension spring force of the sector spring 67 is applied. Move to the side of sector 66 in opposition. When the sector lever 65 moves, the sector drive pin 65A of the sector lever 65
It slides within the fork of sector 66 without moving 66 from its closed position. Then, when the charge lever 61 is further rotated clockwise, the stick lever 61C of the charge lever 61 is disengaged from the rising portion 65B of the sector lever 65, the sector lever 65 is moved by the spring force of the sector spring 67 as shown in the figure.
The left end of the long hole of 65 contacts the pin 18B and the sector lever
The 65 arm plate 65D will return until it comes into contact with the pin 18E.
The figure shows this state in which the sector charging mechanism has completed charging. The action of the sector spring 67 has not only the action of returning the sector lever 65 to the position shown in the drawing, but also the action of always rotating the sector lever 65 counterclockwise around the pin 18B. Of the two functions, the latter function of always rotating the sector lever 65 counterclockwise around the pin 18B allows the exposure time on the film by the sector 66 in relation to the charge lever spring 64 stronger than the sector spring 67. When the sector lever 65 is moved by the long hole of the sector lever 65, the sector drive pin of the sector lever 65 is determined.
65A always keeps sector 66 closed.

Next, the movement of the film winding mechanism to the winding completion position will be described.

In the completed winding state, a V-shaped projection at the end is provided on the outer peripheral cylindrical surface of the hoisting knob 51 by a spring force urging the hoisting stopper spring 58 clockwise as shown in the drawing. Jumps into the tooth groove of ratchet gear 51A
This is a winding stopper that prevents the counterclockwise winding rotation of 51.

The tooth groove of the ratchet gear 51A of the hoisting knob 51 comes into pressure contact with the tip of a reverse rotation preventing claw 53 utilizing the elasticity of a resin material provided on the camera body 10 as shown in the figure. The rotation of the winding knob 51 in the clockwise direction, that is, the rotation in the direction opposite to the winding direction of the film cannot be performed.

In the photographing end state, when the release button 25 of the front cover 20 is pressed, the tip of the release button pin 25A implanted on the back surface of the release button 25 operates in the direction of arrow A. When attached to the camera body 10, the hoisting stopper 57 is counterclockwise against the spring force of the hoisting stopper spring 58 which is urged clockwise by the operation in the direction of arrow A indicated on the hoisting knob 51 in the figure. The edge of the arm portion 61A of the charge lever 61 is disengaged from the end surface of the arm portion 57A of the hoisting stopper 57, and the charge lever 61, and accordingly the cam stopper 62 rotates counterclockwise by the spring force of the charge lever spring 64. It is in the state that it is. Therefore, the projecting portion 62D of the cam stopper 62 has come off from the groove 55A of the cam 55.

Therefore, when the pressing of the release button 25 is stopped,
The hoisting stopper 57 is rotated clockwise by a spring force urging the hoisting stopper spring 58 clockwise, and the arm portion 57A of the hoisting stopper 57 comes into contact with the end surface of the arm portion 61A of the charge lever 61 and stops.

By the counterclockwise hoisting rotation of the hoisting knob 51, the cam stopper 62 also rotates clockwise with the clockwise rotation of the charge lever 61 as described above. The protrusion 62D of 62
Immediately comes into contact with the outer peripheral cylindrical surface of the cam 55. And cam 55
Therefore, the further rotation of the sector cam portion 55B causes the charging lever 61 to continue rotating clockwise and charge the sector charging mechanism as described above, but the projecting portion 62D of the cam stopper 62 The cam 55 keeps rotating while being in contact with the outer cylindrical surface. Therefore, the tip horizontal portion of the charge lever spring 64 is
The spring force urging the cam stopper 62 clockwise between the stopper 61D and the stopper pin 62B implanted in the cam stopper 62 is increased.

When the cam 55 further rotates, the charge lever
61 also rotates clockwise, and immediately before the sticking lever 61C of the charge lever 61 comes off from the rising portion 65B of the sector lever 65, first, the edge of the arm 61A of the charge lever 61 is connected to the arm 57A of the hoisting stopper 57. Off the edge. Then, the hoisting stopper 57 rotates slightly clockwise due to the spring force of the hoisting stopper spring 58, abuts against the end face of the arm portion 62A of the cam stopper 62, and temporarily stops. When the cam 55 further rotates, the charge lever 61 also rotates, so that the rising portion 65B of the sector lever 65 starts to move the charge lever 61.
C comes off. That is, the charging of the sector charging mechanism is completed as described above. When the cam 55 further rotates, the charge lever spring is inserted into the groove 55A of the cam 55.
The projecting portion 62D of the cam stopper 62 jumps in due to the above-described spring force of the horizontal portion of the leading end of the cam stopper 62, and the hoisting stopper 57, which has been once stopped by the end surface of the arm portion 62A of the cam stopper 62, further rotates clockwise. The V-shaped projection of the winding knob 51
Jumps into the tooth groove of the ratchet gear 51A provided on the outer peripheral cylindrical surface of the motor, and prevents the hoisting knob 51 from rotating. As described above, the cam 55 is rotated just one rotation together with the sprocket gear 54 through the film by the winding rotation of the winding knob 51 as described above. Therefore, by one winding operation, the film is rotated by the sprocket gear. The length of eight perforations, which is the number of teeth, can be taken up as one frame. The frame size in this case is a so-called full size frame size of 24 × 36 mm.

The winding of the film winding mechanism is completed in this manner, and the figure shows this state. As can be seen from the above description, the drawing shows the completion of charging of the sector charging mechanism and the completion of winding of the film winding mechanism.

Next, the exposure of the film will be described.

That is, in the above state, the front cover 20
By pressing the release button 25, the hoisting stopper is moved in the direction indicated by the arrow A on the hoisting knob 51 in the figure as described above.
57 is pressed, the hoisting stopper 57 rotates counterclockwise against the spring force of the hoisting stopper spring 58, and the edge of the arm 61A of the charge lever 61 disengages from the end face of the arm 57A of the hoisting stopper 57. The charge lever 61 and therefore the cam stopper 62
Rotates counterclockwise due to the spring force of the charge lever spring 64.

Then, as described above, the charge lever by the spring force of the charge lever spring 64 stronger than the sector spring 67
Due to the counterclockwise rotation of 61, the triangular ketobashi 61C provided on the charge lever 61 strikes the rising portion 65B of the sector lever 65 and comes off the rising portion 65B.
Therefore, the sector lever 65 is connected to the pin 18 in the long groove of the sector lever.
It rotates clockwise around B, against the tensile force of the sector spring 67, and returns to its original state due to the tensile force of the sector spring 67. Therefore, the sector drive pin 65A connects the sector 66 to the sector pin 18D.
To expose the film and close it.

On the other hand, the cam stopper 62 also rotates counterclockwise 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 cam 55 and the cam 55 according to the present embodiment will be described.
55 cam stopper 62, film winding knob
51, hoisting stopper which is a regulating member of the film hoisting knob 51
The relationship between members such as 57 and exposure to a film, that is, a sector (shutter) release will be described.

FIG. 5 shows a cam 55 in the film winding mechanism according to the present embodiment, a cam stopper 62 serving as a cam locking member, a film winding knob 51, a winding stopper 57 serving as a film winding knob restricting member, and a sector. FIG. 4 is a diagram illustrating a configuration of (shutter) release and the like.

In FIG. 5, as described above, the film winding knob 51 is rotated to wind up the film, and the cam 55 coaxial with the sprocket gear meshing with the film is also rotated.
Projection of cam stopper 62 into groove 55A provided on cam 55
62D jumps in and the V-shaped projection at the end of the winding stopper 57 jumps into the tooth groove of the ratchet gear 51A, and the film winding knob
Although the winding rotation of the winding 51 is prevented, the timing of the winding stop by the winding stopper 57 of the film winding knob 51 is delicate.

There is no problem when the film is wound at a normal speed. However, when the film is rapidly wound, the film is slightly wound in timing even if the projection 62D of the cam stopper 62 jumps into the groove 55A of the cam 55. Sometimes. In such a state, the rotation of the cam 55 is stopped because the projection 62D of the cam stopper 62 is jumping into the groove 55A, and thus the rotation of the sprocket gear is also stopped. Since it is too early, the hoisting stopper 57 further rotates slightly and jumps into the tooth space of the ratchet gear 51A and stops. Therefore, the film is pulled toward the hoisting knob and is in a stretched state. Therefore, the cam
The lower surface of the groove 55A of FIG.
That is, the rotation of the cam 55 is stopped in a state in which the film is stretched in contact with the lower surface of the projection 62D. For this reason, frictional resistance is generated between the two surfaces that are in contact with each other and locked, and in such a state, the release button is pressed and the winding stopper 57 is rotated counterclockwise as described above, and the charge is performed. Even if the locking of the lever 61 and therefore the locking of the cam stopper 62 which is the stop member is released, the cam 55
The protrusion 62D of the cam stopper 62 cannot be disengaged from the groove 55A, so that the charge lever 61 cannot be operated and the sector cannot be opened and closed. That is, in such a state, the camera is in a state in which the shutter cannot be released and the film cannot be wound.

Then, as shown in FIG. 5 of the present embodiment, the release button is pressed and the winding stopper 57 is rotated in the counterclockwise direction by the operation of the release button pin 25A in the direction of arrow A to lock the charge lever 61. Therefore, when the release cannot be performed even when the lock of the cam stopper 62 is released, the release button is pushed further deeply to forcibly remove the projection 62D of the cam stopper 62 from the groove 55A of the cam 55.

That is, as shown, the cam stopper 62 is provided with an auxiliary arm 62F near the center of rotation. Further, another arm portion 57B is attached to the winding stopper 57 as shown in FIG.
The arm with the shape protrusion is provided so as to extend. As described above, the protrusion of the cam stopper 62 is inserted into the groove 55A of the cam 55.
When 62D is locked and cannot be released, the release button is further pressed deeply to release another arm 57B of the hoisting stopper 57.
Presses the tip of the auxiliary arm 62F of the cam stopper 62,
Forcibly project the cam stopper 62 from the groove 55A of the cam 55
The charge lever 61 and the cam stopper 62 are rotated in the counterclockwise direction by the spring force of the charge lever spring 64 urged in the counterclockwise direction as described above. To the film.

In this way, the camera can stably operate, regardless of the film winding speed, and can be used a number of times immediately after assembly to make the above-mentioned abutment surface. Stable operation was obtained even with a slightly changed surface, and it became usable as a reuse camera.

As another embodiment, as described above, without changing the hoisting stopper 57, another release button pin is also provided on a portion corresponding to the tip of another arm portion 57B of the hoisting stopper 57. Auxiliary arm 62F of cam stopper 62 by another release button pin
May be forcibly operated.

Next, the film counter mechanism will be described.

As described above, the reference numeral 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 Reference numeral 56 denotes an index gear that rotates clockwise by one tooth for each rotation.

On the upper surface of the index plate gear 72, an index plate 71 is printed as an integrally formed 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 next film winding after the photographing of a predetermined number of frames is completed, 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 72 </ b> A is
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. Then, the arm portion 57A of the hoisting stopper 57 urged clockwise by the spring force of the hoisting stopper spring 58 abuts on the end face of the arm portion 62A of the cam stopper 62, and the V-shaped projection at the tip of the hoisting stopper 57 Hoisting knob
The ratchet gear 51A of 51 cannot be locked, and the charge lever 61 cannot be operated to open and close the sector to expose the film.

As described above, in this embodiment, when two frames of the film are fed in an idle manner, the index wheel 72 is rotated by two teeth.
A prevents the movement of the charge lever 61 by pressing down the protrusion 61E of the charge lever 61 at all.
From the other protruding portion 62E. Therefore, the projecting portion 62D of the cam stopper 62 jumps into the groove 55A of the cam 55, the locking of the hoisting stopper 57 is released, and the hoisting stopper 57
Is stopped, 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 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, in order to make the camera compact, there is no problem in drawing out the film from the patrone at the time of development even if a patrone having a small outer diameter is used.

[0077]

According to the present invention, it is possible to operate stably without changing the function and performance even when assembled or used many times, and a reusable camera can be obtained. By stabilizing the operation, adjustment without assembling can be performed, and a film unit with a lens that can reduce the cost from this aspect is provided.

[Brief description of the drawings]

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

FIG. 2 is a development view showing a configuration of a film unit with a lens according to the present invention.

FIG. 3 is a perspective view of mechanisms such as a camera body and a front cover of the lens-fitted film unit according to the present invention as viewed from the rear side.

FIG. 4 is a perspective view of a film used for a film unit with a lens according to the present invention.

FIG. 5 is a view showing a configuration of a cam, a stop member, a regulating member, etc., a shutter release and the like of the lens-fitted film unit according to the present invention.

[Explanation of symbols]

 10 Camera body 25A Release button pin 50 Film winding mechanism 51 Film winding knob 51A Ratchet gear 55 Cam 55A Groove 57 Winding stopper 57B Separate arm 61 Charge lever 62 Cam stopper 62D Projection 62F Auxiliary arm 64 Charge lever spring

Claims (1)

(57) [Claims] 1. A film unit with a lens in which a film is preliminarily built in and a film can be immediately taken, and a film is wound up by a winding operation of a winding knob, and the film that has been shot is sequentially wound into a patrone. A sprocket meshing with the film, a cam coaxial with the sprocket, a stop member locked to the cam to stop rotation of the cam, and a position at which the lock is released from a position at which the cam is locked by urging means of the stop member. And a regulating member that regulates the winding rotation of the hoisting knob. Even if the regulating member is moved by a release operation and the regulation of the movement of the stop member is released, the urging means may be used. When the lock between the stop member and the cam is not released and the lock is continued, the regulating member is further moved by a deeper release operation. With this configuration, the restriction member presses the stop member in a direction to release the lock, moves the stop member, and releases the lock between the cam and the stop member. Film unit with lens.