JP3292992B2 - 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". Since the camera body is used only for photographing the film and the exposed body of the camera is discarded after taking out the film, the camera body is manufactured with a simple structure at a 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.
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.

[0005] In order to suppress the increase in cost, it has become a major issue to improve the assemblability while reducing the number of parts. Therefore, there has been a demand for a camera that can easily perform automatic assembly by aligning the insertion direction of components and using components with no front and back sides.

Further, from the viewpoint of reusing resources,
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 is a demand for a camera that operates stably without changing its function and performance even when 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. ing.

The present invention has been made to solve these problems, and as a result, the cost has been reduced assuming that automatic assembling can be easily performed, and the function and performance are not changed even if used many times. An object of the present invention is to provide a reusable camera that can be reused as an operating camera, and at the same time, to provide a lens-equipped film unit capable of reducing the cost by stabilizing the operation without adjustment during assembly.

[0008]

SUMMARY OF THE INVENTION The above object is preliminarily film is built, the film one frame every winding a by winding operation of the film winding wheel, is transferred by the take-up
The sprocket gear is rotated by the
Sector by cam that rotates integrally with rocket gear
Equipped with a sector charging mechanism that performs charging operation
In the lens-fitted film unit of the sector
The charging mechanism secures against the bias by the rotation of the cam.
Is moved from the sector drive completion position to the sector charge position
A first member for driving a sector, and a sector structure of the first member
The first member is biased in response to movement to the
After moving to the tacharging position, the cam
When it reaches, it is formed integrally with the cam by the biasing force.
Move in the direction of engagement with the groove, and engage with the groove.
A second member for preventing rotation of the cam, and the first member
When moving to the sector charging position, the first member
Move to the position where the movement to the
In both cases, when the second member is engaged with the groove,
The lock by the member is released and the film winding knob and
The filter engages to prevent rotation of the film winding knob.
Lum winding knob
This is achieved by a film unit with a lens, characterized by having three members, three members .

[0009]

[0010]

Furthermore the object is pre-film is built, the film one frame every winding a by winding operation of the film winding wheel, is transferred by the take-up film
The sprocket gear is rotated by the
Sector charge movement by cam that rotates integrally with the car
In a film unit with a lens designed to perform an operation, a sector is connected via a sector lever connected to the sector.
Together configured to drive the lens, characterized in that a shape of the right and left <br/> symmetric the shape of the sector relative to the sector center line passing through the center of the rotating shaft hole of the cell <br/> Kuta This can be achieved by a film unit with an attachment.

[0012]

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.

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

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. as a result,
Excluding the lens barrel with the taking lens, the camera thickness is 24mm
It is possible to control the camera back and forth, realizing an ultra-thin compact camera.

The present camera is provided with a cardboard carton (paper cover) 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.
Reference numerals 60 and 70 denote film winding, sector charge and film counter mechanisms, respectively.

The camera main body 10 is provided with a film winding mechanism 50, a sector charging mechanism 60, and members constituting a film counter mechanism 70 when mounted alone, and a shutter case 11 for accommodating a sector.

The shutter case 11 is fixed by engaging claws 11A protruding from 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 photographing lens 12 having a focal length f = 30 mm and having a stop of f / 9.5, which is a single lens having a focal length f = 30 mm, is provided. 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 an AA battery serving as a strobe charging power source by protruding the upper and lower battery contact pieces 41, which are integrated, into the battery chamber on the back of the camera body 10 through the upper and lower slit holes 10D. 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 mounted on 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 its rear surface, and 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 the spool S1 in the cartridge P1, and even if the film in the cartridge is wound up by the spool S2 once the film is loaded, the other end is locked on the spool S1. It can be wrapped in 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 the front surface and locking holes 30C and 30D on the 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 screen is completed by mounting the carton shown in FIG.

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 the above-described respective mechanisms at an angle as viewed from the back side of the camera, and FIG. 4 shows the mechanism with the patrone and the spool in which the film is wrapped, as viewed from the direction of inserting the spool into the camera body. It is a thing.

The camera body 10 has a patrone chamber 15 as two storage 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 the present embodiment is a roll film J135 or a slightly thin 130-140 μm roll film like a general camera, and a spool of the patrone P1 in a dark room or the like in advance using a patrone 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, the back cover 30 is put on the back cover 30 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 back of the camera, and 51A and 52 denote ratchet gears and hoisting forks, respectively, which are coaxial with the hoisting knob 51. The hoisting fork 52 protrudes into the patrone chamber 15A and is loaded prior to completion of the camera.
Spool S1 is engaged.

Numeral 54 denotes an eight-tooth sprocket gear set so that the tooth tip is exposed on the rail surface 17, and numeral 55 denotes a cam which is a groove into which a protruding portion 62D of a cam stopper 62 jumps in one place on the outer peripheral portion.
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 opposite to 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 is rotated 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.

Next, a hoisting stopper 57 which is a member for stopping a film hoisting knob 51 described later, a sprocket gear 54
The cam stopper 62 is a member for stopping the cam 55 that rotates integrally with the constant rotation of the cam 55. The charge lever is a member for operating the sector charging mechanism 60 by rotating the cam 55 and driving the sector lever 65 for opening and closing the sector 66.
Of the springs that operate the three members 61, the charge lever spring 64 that operates the two members of the cam stopper 62 and the charge lever 61 according to the present embodiment will be described.

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.

A cam stopper 62 is 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.

Then, as described later, a film winding knob
By the winding operation of the film by 51, the tip horizontal portion of the charge lever spring 64 moves between the concave portion 61D of the charge lever 61 and the stopper pin 62B implanted in the cam stopper 62,
The spring force for urging the cam stopper 62 clockwise will be increased. The projecting portion of the cam stopper 62 is inserted into the groove 55A of the cam 55 when the cam 55 makes one rotation due to the spring force.
62D jumps in and winding is completed. Thus, the charge lever spring 64 is a spring that effectively acts on both the cam stopper 62 and the charge lever 61. A hoisting stopper spring 58 for urging the hoisting stopper 57 clockwise is attached to the hoisting stopper 57 which is the remaining member.
Is incorporated.

The hoisting stopper spring 58 is a torsion coil spring as can be seen from FIG.
By making the shape shown in FIG. 5 into a shape shown in FIG. 5, it is also possible to eliminate the need for the hoisting stopper spring 58 as an integrally formed member utilizing the spring property of the resin material.

As will be described later, the positions of the charge lever 61 and the cam stopper 62 after the photographing have been 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 on a film and operating a sector 66 supported by a sector pin 18D provided on the camera body 10. As shown in FIG. 6, the shape of the sector 66 is a line Y- passing through the lens optical axis LA and the center of the rotation shaft hole 180D of the sector.
It has a left-right symmetrical shape with Y as the center line. 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. A sector spring 67 is stretched between a pin 65C of the sector lever 65 and a pin 18C provided on the camera body 10,
In the figure, the left side of the long hole of the sector lever 65 is urged by the sector spring 67 so as to contact the pin 18B. Further, the sector lever 65 is provided with a rising portion 65B and an arm plate 65D, and the arm plate 65D is urged by a sector spring 67 so as to abut on a pin 18E provided on the camera body 10.

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 from 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 further rotates clockwise to disengage the stick-out 61C of the charge lever 61 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.

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

The tip of a reverse rotation preventing claw 53 utilizing the elasticity of a resin material provided on the camera body 10 is brought into pressure contact with the tooth groove of the ratchet gear 51A of the winding knob 51 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.

Then, 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.

When the hoisting knob 51 rotates counterclockwise, 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.

In this way, the winding of the film winding mechanism is completed, 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.

Note that the rotation of the cam 55 causes the charge lever 61 to press the cam 55 from the front side by the charging operation of the charge lever 61 against the spring force urging in the counterclockwise direction, and the protrusion of the cam stopper 62. Part 62D is cam
To jump into the groove 55 </ b> A of the 55, a bidirectional pressing force of a force pressing the cam 55 from the right is applied to the cam 55 by a spring force for urging the cam stopper 62 clockwise by the horizontal end of the charge lever spring 64. Will be. For this purpose, the camera body 10 is provided with a bearing (not shown) fitted to the lower cam shaft 56 and an arc-shaped side wall 19 receiving the pressing force in the two directions. Therefore, the cam shaft 56 is prevented from being greatly inclined. Therefore, the cam 55
The projection timing of the protrusion 62D of the cam stopper 62 into the groove 55A of the cam shaft 56 and the incomplete meshing with the index disk gear 72 meshing with the V groove 56A provided at the upper end of the cam shaft 56 are prevented. In addition, by covering the front cover 20,
Since the tip of the cam shaft 56 is pressed by the index plate gear 72, the cam 55 does not fall out of the main body.

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 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. 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 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. 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 projection 62 </ b> E of the cam stopper 62. Then, the protruding portion 72A is connected to both 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. 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, the index plate gear 72 rotates by two teeth, and the rotation causes the protrusion 72 of the index plate gear 72 to rotate.
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. Accordingly, the projection 62D of the cam stopper 62 jumps into the groove 55A of the cam 55, the locking of the winding stopper 57 is released, and the locking of the winding knob 51 by the winding stopper 57 is performed, so that 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.

As can be seen from the description of the mechanism of the main body,
All the members related to the hoisting operation except the sector, that is, members such as levers, knobs, cams, springs, etc., have one horizontal operating direction (operating direction). Here, the horizontal direction is defined as a horizontal plane in a posture of the camera for photographing the camera in a normal landscape position, and a plane perpendicular to a rotation axis of a film winding knob 51 of the camera is defined as a horizontal plane, and an operation direction on the horizontal plane is defined as a horizontal plane. Direction of operation. For this reason, the efficiency of the operation transmission between each member is improved, and each member is smoothly operated. In addition to this, the rotation axes of members such as levers, knobs, cams, springs, etc. It shows that it is the axis of. That is, all members related to the hoisting operation, except for the sprocket gear 54 and the sector spring 67, which are structurally impossible in terms of space, can be assembled by inserting or dropping from above. This means that automatic assembly is easily possible, which is very effective in reducing costs.

As described above, the sector 66 also has a symmetrical shape with respect to the line passing through the lens optical axis and the rotation axis hole of the sector as the center line. This means that there is no front and back of the member, so even when assembled manually, the work can be done without paying attention to the front and back of the member, and the work of the assembly process of the unit in which the sector is incorporated is automatically performed. It also allows easy assembly. Therefore, the automatic assembly of the members related to the hoisting operation and the cost reduction are effective.

As can be seen from the description of the mechanism of the main body, the winding stopper 57, which is a member for stopping the film winding knob 51, and the cam 55, which is integrally rotated by the constant rotation of the sprocket gear 54, are stopped. Sector charging mechanism by rotation of cam stopper 62 and cam 55
Sector lever that operates 60 and opens and closes sector 66
The three members of the charge lever 61 that drives the 65 are:
All are made of independent members. These three members are also main members of the mechanism of the camera. As described above, since the three members independently perform their respective functions, the timings of the respective functions can be freely set without being influenced by others. Therefore, the operation of each function of the three members can be set with a margin, and the three members, which are the main members of the camera, can operate stably. For this reason, when used as a reuse camera, as described above, the three members, which are the main members of the camera, operate stably with a margin even if the three members are slightly deformed after being used many times. The durability as a camera has been improved,
It can be used as a reuse camera. Further, the adjustment without adjusting all the members including the three members is possible for the above-described reason, which is effective in terms of cost reduction. Although the above three members are biased by two springs,
Other methods are also possible.

[0079]

According to the present invention , the cam is provided integrally with the cam.
And a member that engages with the groove
The rotation of the cam is
Prevent the rotation of the hoisting knob and the winding knob with high accuracy
As well as miniaturizing each part,
The space for providing the storage mechanism can be reduced.

[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 another embodiment of the hoisting stopper used in the film unit with a lens according to the present invention.

FIG. 6 is a diagram of a sector incorporated in the film unit with lens according to the present invention.

[Explanation of symbols]

 10 Camera body 50 Film winding mechanism 51 Film winding knob 55 Cam 57 Hoisting stopper 58 Hoisting stopper spring 60 Sector charging mechanism 61 Charge lever 62 Cam stopper 64 Charge lever spring 65 Sector lever 66 Sector 67 Sector spring 70 Sector spring 70 Film counter mechanism F Film

Claims (1)

(57) [Claims] A film is built in advance, and the film is wound up frame by frame by a winding operation of a film winding knob, and a sprocket gear is rotated by the film transferred by the winding, and is rotated integrally with the sprocket gear. In a film unit with a lens having a sector charging mechanism configured to perform a sector charging operation by a cam that rotates, the sector charging mechanism is moved from a sector drive completion position to a sector charging position against bias by rotation of the cam. A first member for driving the sector and a bias when the first member moves to the sector charge position and the cam reaches a predetermined angular position after the first member moves to the sector charge position. Is moved in the direction of engagement with the groove formed integrally with the cam by the urging force to engage with the groove. And a second block for preventing rotation of the cam.
When the first member is moved to the sector charge position and moves to a position where the first member is prevented from moving to the sector drive completion position, and the second member is engaged with the groove. The lock by the second member is released and the third member provided to urge in the direction to engage with the film winding knob for engaging with the film winding knob and preventing rotation of the film winding knob is provided. A film unit with a lens comprising three members.