JP3086772B2 - Shutter for continuous shooting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous shutter device for sequentially exposing at short time intervals by one release operation.

[0002]

2. Description of the Related Art Conventionally, inexpensive film units with lenses are widely sold, and photographic films are pre-loaded at a factory. This film unit with a lens may be submitted to a photo lab as it is after photographing, and there is no need to load and unload a photographic film. Such a film unit with a lens
Depending on the intended photographing, not only those with a strobe, but also those having a telephoto or close-up function are also provided. Therefore, for example, a camera having a continuous shooting mechanism capable of observing a form such as sports as a still image at each moment is desired.

[0003] As a continuous shooting camera, Japanese Patent Laid-Open Publication No.
Japanese Patent Application Laid-Open No. 7-313873 proposes one having eight fixed apertures arranged in two rows of four in order to make it easy to understand the temporal order of the continuous shooting screen. In the shutter device of this camera, photographing lenses are respectively arranged in front of a shutter opening, and four shutter circles each having a rotation center determined at a position equidistant from a shutter opening adjacent in the film feeding direction. Plates are respectively provided behind the shutter openings. Each of these shutter disks is provided with one slit at a different position from the center of rotation. Then, the shutter disk is rotated by driving a motor so that the slits can sequentially cross the shutter opening to perform continuous shooting.

However, since the above-mentioned shutter device uses a motor for driving the shutter disk, it is difficult to employ the shutter device in a film unit with a lens which requires low cost and compactness. In view of this, a shutter device for continuous photographing in which the shutter disk is rotated by using the urging force of a spring by a shutter release operation to charge the spring in conjunction with film winding and return the shutter disk to an initial position. Is being considered.

[0005]

However, in the case where the shutter disk is reversed when the film is wound up, the slit of the shutter disk crosses the shutter opening during the reverse rotation period. Needs to shield each shutter opening.
For this purpose, it is necessary to provide an all-shielding plate in addition to the shutter disk, and to close each shutter opening with the all-shielding plate from the completion of the exposure of each frame of continuous shooting until the completion of film winding. Although simple, the number of parts of the film winding mechanism increases, making assembly difficult and increasing the cost.

[0006] Further, in order to stop the movement of the subject in sports, the exposure time for the slit of the shutter disk to cross the shutter opening must be 1/125 sec at the latest.
It is necessary to set above. Therefore, it is more convenient to rotate the small-diameter shutter disk twice because the shutter device itself becomes more compact than to obtain a quick exposure time by rotating the large-diameter shutter disk once. When the shutter disk is rotated twice in this manner, the shutter disk crosses the same shutter opening twice, so it is necessary to provide a switching shielding plate for switching the shutter opening according to the exposure order.
Therefore, in the above-described shutter device, since the photographing lens, the shutter opening, and the shutter disk are arranged in this order, the switching shield plate is arranged, for example, on the rear side of the shutter disk without much design change. Easy. By the way, the switching shield plate is provided between the first rotation of the shutter disk and the second rotation.
It is necessary to switch at a high speed because it is performed between the rotations. However, if the switching shielding plate is arranged away from the shutter disk, the distance between the shutter opening and the switching shielding plate becomes longer, so that the switching movement distance of the switching shielding plate becomes longer, and it becomes difficult to move the switching shielding plate at high speed. There were drawbacks.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks of the prior art. In order to reduce the cost of the film winding mechanism, the shutter disk is rotated twice during one shutter release. It is an object of the present invention to provide a continuous shooting shutter device in which a switching shielding plate for selectively switching an opening between a first rotation and a second rotation of a shutter disk is arranged at an optimum position.

[0008]

According to the first aspect of the present invention, there is provided a sprocket which engages with a film perforation and rotates once while the film is transported by one frame, and the sprocket. And a gear that meshes with the rack of the traveling plate and returns the traveling plate from the traveling completion position to the charging position, and interlocks with this to reversely rotate the shutter disk to the initial position and simultaneously opens the shutter opening. It is movable between the open position and the shield position to block all at once, and all the shield plates urged toward the open position by a spring and coaxially rotate with the gear, and fully shielded at the beginning of rotation Engage with the plate and move all shielding plates to the shielding position against the bias of the spring, release the engagement with all the shielding plates at the end of rotation and open all the shielding plates by the bias of the spring Cam to return to position It is those with a door.

According to this, at the beginning of the rotation, all the shielding plates are engaged and moved to the shielding position against the bias of the spring, and at the end of the rotation, the engagement with the all shielding plates is performed. Since the cam plate which releases the shield plate and returns the entire shielding plate to the open position by the bias of the spring is arranged coaxially with the gear, the winding mechanism is simplified.

[0010]

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 2, a lens-fitted film unit 10 (hereinafter referred to as "film unit").
It comprises a front cover 11, a shutter unit 12 for continuous photographing, a main body base 13, and a back cover 14, and the shutter unit 12 is incorporated between the front cover 11 and the main body base 13.

The main body 13 has a dark box 1 having a total of eight openings 15a to 15h formed on the front surface in two steps vertically and four rows horizontally.
6 are formed integrally. On the dark box 16, a film unwinding mechanism 17 and a film counter mechanism 1 are provided.
8 are provided.

An unexposed film roll chamber (hereinafter simply referred to as a film roll chamber) 19 is provided on both sides of the dark box 16.
And a patrone chamber 20 are provided integrally. In the patrone room 20, a film 2 having a width of 35 mm is previously set at the time of assembly.
A patrone 22 for accommodating 1 in a light-shielded state, and a film roll 21a drawn out of the patrone 22 into a roll form are loaded in the film roll chamber 19, respectively. Then, the main body base 13 is covered with the rear cover 14 so that the film roll 21a and the cartridge 22 are covered.
Is positioned on an aperture formed on the rear surface of the main body base 13. At this time,
The sprocket 74 described later is a perforation 21c.
Become bite. The aperture is 20 × 36m
m high-definition size.

The patrone 22 and the film 21 used herein are based on international standards (ISO: 1007-197).
This is a 35 mm film (135 film) with a patrone specified in the 9th edition), and the rear end of the film 21 is fixed to a core 22 a provided on the patrone 22.

In the upper part of the patrone chamber 20, a hoisting knob 23 is provided. The hoisting knob 23 is provided with a fork 23a that engages with the winding core 22a of the patrone 22. By operating the winding knob 23 in the direction of the arrow in the drawing, the winding core 22a is rotated, and the film 21 that has been photographed is wound into the cartridge 22. It should be noted that the winding knob 23 is turned in the opposite direction to the winding direction.
A tooth row 23b is formed on the outer periphery of the hoisting knob 23, and a check pawl 24 made of a leaf spring is engaged with the tooth row 23b.

The rear cover 14 is integrally provided with a pull-top type lid 14a for covering the bottom of the patrone chamber 22. With the lid 14a opened, the patrone 22 containing the photographed film can be taken out of the patrone room 20. In the rear cover 14, a finder eyepiece window 14b and an opening 14c for exposing a part of the winding knob 23 to the outside are integrally formed.

The front cover 11 has a shutter button 26,
A finder objective window 27 and openings 11a to 11h for exposing each lens 28 to the outside are provided integrally. The shutter button 26 is formed integrally with a part of the upper surface of the front cover 11 cut out, and is pressed when the shutter is released. When the pressing operation is released,
The shutter button 26 returns to its original position due to its own elasticity.

A shutter unit 12 is detachably attached to the front surface of the main body base 13 by means of a hook or the like. On the front surface of the shutter unit 12, eight photographing lenses 28 are provided.
a to 28h are arranged in four rows and two rows at a time. The optical axes of the respective photographing lenses 28a to 28h are parallel to each other, and pass through substantially the centers of the respective openings 15a to 15h of the dark box 16. The photographing lenses 28a, 28b, 28e,
28f is formed integrally with one lens plate 29 formed of a transparent resin such as acrylic,
c, 28d, 28g, 28h are the other lens plate 3
0. The shutter unit 12 incorporates a finder 31 including an eyepiece and an objective lens.

The shutter unit is shown in FIGS. 1, 3 and 4. The shutter unit 12 includes shutter disks 35 to 3
8, traveling plate 39, charge lock lever 40, governor mechanism 41, deceleration drive transmission mechanism 42, switching shield plate 43,
Each of these components is incorporated between the front plate 45 and the middle plate 46, and between the middle plate 46 and the rear plate 47. This shutter unit 12
By being attached to the main body base 13, it is connected to a film unwinding mechanism 17 and a film counter mechanism 18. 3 and 4, the film unit 10
The outer case 48 is put on the outside of the.

The photographing lenses 28a to 28h
Eight aperture openings 50a to 50h are formed on the optical axis. The inside diameters of these aperture openings 50a to 50h are all equal. Four shutter disks 35 to 38 are arranged in front of the aperture openings 50a to 50h.
In these shutter disks 35 to 38, shafts 35 a, 36 a, 37 a, and 38 a implanted respectively are rotatably supported by a front plate 45 and a middle plate 46. The rotation centers of these shutter disks 35 to 38 are located above a horizontal line passing through the centers of the four aperture openings 50e to 50h arranged above and adjacent to the aperture openings 50e, 50f, and 50f.
Two shutter disks 3 at the same distance from 0g and 50h
The axes 37a, 38a of the 7, 38 are also located below a horizontal line passing through the center of the four apertures 50a to 50d arranged below, and the adjacent apertures 50a and 50d.
The shafts 35a and 36a of the two shutter disks 35 and 36 are respectively set at positions equidistant from b, 50c and 50d.

Therefore, when viewed from the front, the aperture openings 50a and 50b are equidistant from the axis 35a and the axis 36a
From the aperture stops 50c and 50d are equidistant from each other.
The aperture openings 50e and 50f are equidistant from 7a, and the aperture openings 50g and 50 are equidistant from the shaft 38a. In FIG. 1, the front plate 45, the middle plate 46, and the rear plate 47 are omitted to prevent the drawing from being complicated.

More specifically, as shown in FIG. 5, gears 35b, 36b, 37b and 38b having the same number of teeth are formed on the outer circumference of the shutter disks 35 to 38 over the entire circumference, and the center of rotation is the same in the vertical direction. Gear 35b and gear 37b,
And the gear 36b and the gear 38b mesh with each other. The gears 37b and 38b are meshed with the gear 52 having the same number of teeth. This gear 52
, A gear 53 is fixed coaxially, and a gear 54 is meshed with the gear 53. Gear 54 is coaxial with gear 5
5 is fixed, and a first rack 39 a integrally formed with the traveling plate 39 is meshed with the gear 55.

The traveling plate 39 is provided movably in the film feeding direction, and is urged leftward by a spring 57. The state shown in FIG. 5 is a state of the traveling completed position where the traveling is completed, and is moved leftward from here by the winding operation of the winding knob 23 to be moved to the charging position.

A charge lock lever 40 provided on the shutter unit 12 is disposed on the left side of the traveling plate 39. The charge lock lever 40 has a lock claw 40a provided on one end side and a pressing plate 40b provided integrally on the other end side, and is rotatably disposed by a rotation shaft 40c provided therebetween. The locking claw 40a is provided on the traveling plate 3
9 and engages with the locked portion 39b provided at the position 9, and holds the traveling plate 39 at the charge position. The pressing plate 40b is located between the shutter button 26 and the hoisting knob 23, and rotates around a rotation shaft 40c in conjunction with the pressing operation of the shutter button 26. By this rotation, the engagement between the lock claw 40a and the locked portion 39b is released, and the running plate 39 moves toward the running completion position by the bias of the spring 57. While the traveling plate 39 moves from the charge position to the traveling completion position, each of the shutter disks 35 to 38 makes two rotations simultaneously.

Each of the shutter disks 35 to 38 has one
Individual slits 35c, 36c, 37c, 38c are formed. These slits 35c, 36c, 37
c, 38c are formed on the same radius from each of the shafts 35a, 36a, 37a, 38a, and their slit lengths (the radial lengths of the shutter disks) are aperture openings 50a to 50h.
Is larger than the inner diameter. These slits 35c, 3
6c, 37c and 38c are two shutter disks 35 to 38, respectively.
The rotation crosses each of the aperture openings 50a to 50h twice. This crossing is performed by slits 35 of shutter disks 35 and 36.
c, 36c are aperture openings 50a, 50b, 50c, 50d
In order, and simultaneously, the slits 37c, 38c of the shutter disks 37, 38 are connected to the aperture openings 50e, 50f, 50g, 5
Cross 0h in order.

Below the traveling plate 39, the upper diaphragm opening 5
A switching lever 58 and a switching shielding plate 4 for switching and shielding between 0e to 50h and the lower diaphragm openings 50a to 50d at the first rotation and the second rotation of the shutter disks 35 to 38, respectively.
3 are arranged. The switching shielding plate 43 is provided movably along the film feeding direction on the back of the aperture openings 50a to 50h, and is urged rightward by a spring 59 as shown in FIG.

The switching shielding plate 43 has four apertures 43 for simultaneously exposing the four lower aperture openings 50a to 50d.
a to 43d and four openings 43e to 43h for simultaneously exposing the upper four aperture openings 50e to 50h are provided at predetermined intervals in the film feeding direction. Further, one end 5 of a switching lever 58 is provided on the switching shielding plate 43.
The step portion 43i into which the recess 8a enters and the rising piece 43j with which the falling piece 39c provided when the traveling plate 39 moves toward the charging position are provided integrally.

The switching lever 58 is provided rotatably about a shaft 58b, and is urged by a spring in a counterclockwise direction shown in FIG. One end 5 of this switching lever 58
8a is a step 43i when the traveling plate 39 is in the charging position.
To hold the switching shield plate 43. At this time, the switching shield plate 43 is such that the four lower openings 43a to 43d simultaneously expose the four lower aperture openings 50a to 50d,
The upper four aperture openings 50e to 50h are shielded.

The bottom surface of the falling piece 39c contacts the other end 58c of the switching lever 58 when the shutter disks 35 to 38 make one rotation. By this contact, the switching lever 58 slightly rotates in the clockwise direction shown in the drawing around the shaft 58b, so that the one end 58a comes off the step 43i. As a result, the switching shielding plate 43 moves rightward by a predetermined amount by the bias of the spring 59, and the four openings 43e to 43e.
h simultaneously exposes the upper four aperture openings 50e to 50h and the lower four aperture openings 50a to 50d.
Shield.

The first exposure is performed when the slit 35c of the shutter disk 35 crosses the aperture opening 50a located at an angle of θ1 by the operation of the switching shielding plate 43, and then the slit 35c of the shutter disk 35 is set to θ1 + θ2. The second exposure is performed when the diaphragm crosses the aperture opening 50b positioned at the angle of .times.
The third exposure is performed when the shutter 36 crosses the aperture 50c located at the angle of 1 + θ2, and the fourth exposure is performed when the slit 36c of the shutter disk 36 crosses the aperture 50d located at the angle of 3 × θ1 + 2 × θ2. Is performed.

Subsequently, when the shutter disks 35 to 38 rotate by an angle of θ1, the second rotation is performed, and the switching shielding plate 43 is operated. Hereinafter, similarly, the diaphragm opening 50e in which the slit 37c of the shutter disk 37 is positioned at the angle of θ1.
A fifth exposure when traversing is followed by a shutter disk 3
The sixth exposure is performed when the 7 slit 37c crosses the aperture opening 50f located at the angle of θ1 + θ2, and subsequently, when the slit 38c of the shutter disk 38 crosses the aperture opening 50g located at the angle of 3 × θ1 + θ2. After the seventh exposure, the slit 38c of the shutter disk 38 is set to 3 × θ.
The eighth exposure is performed when the light passes across the stop aperture 50h located at an angle of 1 + 2 × θ2. In this embodiment, the exposure time for the slits 35c, 36c, 37c and 38c to cross the aperture openings 50a to 50h is 1/250 second.

A delay drive transmission mechanism 42 is connected to the gear 52 so that the exposure interval is later than the exposure time. The delay drive transmission mechanism 42 includes a planetary gear mechanism 60,
And the two-stage gear 61, and the shutter disk 3
The drive of the governor mechanism 41 is intermittently transmitted to 5-38.
The planetary gear mechanism 60 includes a sun gear 62 and a sun gear 6.
And a planetary gear 63 that revolves in the direction opposite to the direction of rotation of the sun gear 62 while revolving in the direction of rotation of the sun gear 62. The sun gear 62 is composed of a gear 64 meshing with the gear 52 and a gear 65 fixed coaxially with the gear 64, and the gear 66 meshes with the gear 66 of the planetary gear 63.

The planetary gear 63 has shutter disks 35 to 38.
The gear 66 having the same diameter as the gear 66 and the intermittent gear 67 having the same diameter are fixed at positions shifted in the axial direction, and these rotate twice while the shutter disks 35 to 38 make one rotation. The intermittent gear 67 sets the two teeth 67a and 67b at a predetermined angle (θ3).
The gears 67a and 67b mesh with the gear 61a of the two-stage gear 61 at every predetermined angle. A gear 68 is meshed with a gear 61b of the two-stage gear 61, and an escape wheel & pinion 69 constituting the governor mechanism 41 is fixed to the cog of the gear 68.
A well-known pallet 70 meshes with the escape wheel & pinion 69, and the engagement of the escape wheel & pinion 69 with the pallet 70 intermittently delays the rotation of the shutter disks 35 to 38.

This delay is caused by the teeth 67a, 6 of the intermittent gear 67.
The operation is performed when the drive of the governor mechanism 41 is transmitted to the shutter disks 35 to 38 by the engagement of the gear 7b and the gear 61a.
In the present embodiment, each shaft 35a of the shutter disks 35 to 38,
Each of the aperture openings 50a to 50a to 36a, 37a, 38a
The angle 2 × θ1 and θ2 of 0h are the aperture openings 50a to 50h
Are set in advance to, for example, 74 ° and 106 °.
And 106 °, the intermittent gear 67 teeth 67a,
Two teeth 67 so that 67b meshes with gear 61a.
What is necessary is just to determine the predetermined angle (θ3) of a and 67b.

That is, since the intermittent gear 67 makes two rotations for one rotation of the shutter disks 35 to 38, two teeth 6
The predetermined angle (θ3) of 7a, 67b is calculated as 2 × 74 ° = 14
The angle may be set to 8 °. This ensures that the governor mechanism 41 is driven within the exposure interval, and that the governor mechanism 4
Slits 35c and 36 at the time when the driving of No. 1 is released
Since the angles between c, 37c, 38c and the aperture openings 50a to 50h are all the same, the exposure time can always be kept constant.

The intermittent gear 67 includes a tooth 67a and a gear 6
In this state, the meshing with the gear 1a has been completed, that is, the teeth 67a have been rotated clockwise by an angle of θ4 from the meshing position with the gear 61a. Also, the planetary gear mechanism 63
Since the sun gear 62 rotates clockwise (in the direction opposite to the arrow shown in FIG. 5) when the traveling plate 39 moves toward the charge position, the teeth 67a separate from the gear 61a to drive the governor mechanism 41. I try not to communicate.

As shown in detail in FIG. 7, the traveling plate 39 is integrally formed with a second rack 71 protruding toward the rear side. The second rack 71, the third gear 72, the gear 73, and the sprocket 74 constitute a charging mechanism for moving the traveling plate 39 to a charging position. A notch gear 76 and a notch disk 77 are integrally fixed to the three-stage gear 72 at the upper and lower sides of the gear 72a. Since the gear 73 is meshed with the gear 73 coaxially fixed to the sprocket 74, the drive of the sprocket 74 is transmitted.

The notch gear 76 includes a notch 76a and a gear 76b that meshes with the second rack 71, and moves the traveling plate 39 to the charging position. The notched disk 77 has a part of the notched portion 77a, and moves the entire shielding plate 44 to a shielding position that completely shields the aperture openings 50a to 50h. The notch 76a
The traveling plate 3 is kept until all the shielding plates 44 move to the shielding position.
This is to prevent 9 from moving toward the charge position. Then, after the entire shielding plate 44 has moved to the shielding position, the second rack 71 meshes with the gear portion 76b.

As is well known, the sprocket 74 is provided with eight teeth, and the rotation of the sprocket 74 allows the film 21 to be fed by the length of one frame, and
The step gear 72 also makes one rotation. It should be noted that the tooth portion of the second rack 71 at which the engagement of the gear portion 76b starts first has approximately one tooth.
A tooth missing portion 71a cut out by the number of teeth is provided.
The tooth missing portion 71a prevents tooth jump between the gear portion 76b and the second rack 71.

With one rotation of the sprocket 74, the traveling plate 39
Moves to a position slightly over the charging position. When the third gear 72 makes one rotation, the notch 76a is located at a position facing the second rack 71, so that the engagement with the gear 76b is released, and the traveling plate 39 is slightly moved rightward (traveling). (Toward the completion position), and is locked in the charged state by the charge lock lever 40.

Until the traveling plate 39 moves to the charging position, the shutter disks 35 to 38 are rotating.
h. The entire shielding plate 44 is provided movably in the film feeding direction, and is urged rightward as shown in FIG. The openings 44a to 44h to expose the respective apertures 50a to 50h are provided in the entire shielding plate 44.
44h, and an L-shaped piece 79 is integrally provided above.

As shown in FIG. 9, the L-shaped piece 79 reigns at the notch portion 77a of the notch disk 77, and the rotation of the notch disk 77 causes the one wall 77 of the notch portion 77a to rotate.
and is moved leftward as shown in FIG. As a result, as shown in FIG. 10, all the shielding plates 44 have moved to the all shielding position, and this state is the L bent piece 7.
9 remains on the circumferential surface of the notch disk 77, and is maintained until the notch disk 77 makes one rotation.

The film stopping mechanism 17 includes a disk 80,
It comprises a locking lever 81, a detection lever 82 and a cam surface 83. The disk 80 is formed coaxially with the sprocket 74, and has a hole 80a formed on the upper surface thereof. The locking lever 81 is provided rotatably with respect to a shaft 84 arranged in parallel with the optical axis, and is urged clockwise by a spring 85. At one end of the locking lever 81, a locking claw 81a protruding rearward is provided.

The locking lever 81 has a locking claw 81a having a hole 80.
It rotates between a lock position which enters a and a retreat position which retreats from this. The other end of the locking lever 81 has a protruding portion 8
1b is provided integrally. When the locking claw 81a is at the lock position, the protrusion 81b engages with the bottom surface of the winding knob 23 to lock the winding operation. In addition, locking claw 8
On the side opposite to 1a, a connecting rod 81c that projects forward and engages with the other end 82a of the detection lever 82 is provided integrally.

The detection lever 82 is provided rotatably about a shaft 86 arranged in parallel with the optical axis.
Is biased clockwise. This detection lever 82
Is provided with a rotatable roller 82b at one end.
The roller 82b slides on the cam surface 83. The cam surface 83 is provided integrally on the rear side of the traveling plate 39, and has a configuration including a slope 83a and a flat surface 83b. Slope 83
a, the roller slides when the traveling plate 39 is at the traveling completed position,
Rotating toward the locking lever 81 retreat avoid position. Also,
Plane 83b is roller 82b to slide when the running plate 39 is traveling completed position during movement between the slightly moved position and a charged position, rotate towards the locking lever 81 in the locked position .

The film counter mechanism 17 includes a one-tooth gear 90 fixed coaxially with the sprocket 24, and a well-known number-of-photographs display plate 91 that meshes with the one-tooth gear 90.

Also, as shown in FIG.
4 has a length L1 of 3 (in the film feeding direction).
36m which is the same as the horizontal length of one frame of 5mm full size screen
m. Further, as shown in FIG. 4, the vertical length L2 of the aperture 94 is about 20 mm in a 35 mm full size screen. Therefore, when photographing is performed through such an aperture 94, as shown in FIG. 7, the upper and lower two levels in the range of the screen 95 for one frame of the high-definition size of the film 21 of 35 mm width, four rows in the film feeding direction, The continuous shooting screens 95a to 95h of a total of eight frames are exposed. Note that the horizontal size of the four continuous shooting screens 95a, 95d, 95e, and 95h on both upper and lower sides is longer than the other continuous shooting screens 95b, 95c, 95f, and 95g by the amount hidden by the negatives used in printing. The shape of the aperture 94 is determined in such a manner.

The operation of the above configuration will be described. The initial state of the shutter unit 12 is as shown in FIG. In this state, as shown in FIG.
50h are shielded by shutter disks 35-38. Then, the traveling plate 39 is in the traveling completed position.

As shown in FIG. 5, the switching shield plate 43 has apertures 43a to 43d which shield the aperture openings 50a to 50d from light.
The apertures 43e to 43h expose the aperture openings 50e to 50h. Further, as shown in FIG. 7, the entire shielding plate 44 has apertures 44a to 44h with aperture openings 50a to 50h.
h is exposed. Furthermore, the film winding stopping mechanism 17 is configured such that the roller 82 b
a, the retracted position is retracted from the hole 80a of the locking claw 81a. Thereby, the winding operation of the winding knob 23 is permitted.

When the winding operation of the winding knob 23 is performed, the film 21 is wound toward the inside of the cartridge 22. By the transfer of the film 21, the sprocket 74 meshing with the perforation 21c is moved as shown in FIG.
Rotate in the counterclockwise direction shown in. The sprocket 74 transmits the driving thereof to the gear 75 of the third gear through the gear 73, and rotates the third gear 72 clockwise as shown in FIG.

The notch disk 7 is rotated by the rotation of the third gear 72.
In 7, the one wall 77 b of the cutout portion 77 a hooks the L-shaped piece 79 and moves the entire shielding plate 44 toward the shielding position.
As a result, the openings 44a to 44h are
The diaphragm apertures 50a to 50h are completely shielded from the optical axis of 28h. At this time, the second rack 71
Since the gear portion 76b of the notch gear 76 is not meshed, the charge movement of the traveling plate 39 is not performed.

After the entire shielding plate 44 has moved to the shielding position, as shown in FIG. 10, the L-shaped piece 79 falls off the one wall 77b, but is caught on the circumferential surface of the notched disk 77,
While the notched disk 77 is rotating clockwise, all the shielding plates 44 are maintained in the shielding position.

When the winding operation is continued, the third gear 72 is further rotated, and the gear 76b is moved to the second rack 71.
Mesh with. As a result, the traveling plate 39 moves toward the charge position. When the charge movement of the traveling plate 39 is started, the first rack 39a, the gear 55, the gear 54, and the gear 5
3, the shutter disks 35 to 36 through the gear 52
1 rotate in the directions of the arrows shown in FIG. At this time, since the sun gear 62 meshing with the gear 53 rotates clockwise, the planetary gear 63 revolves clockwise around the sun gear 62. Therefore, the interlock between the intermittent gear 67 and the gear 61a is released as shown in FIG. 12, and the winding operation can be performed smoothly without transmitting the deceleration drive of the governor mechanism 41. The revolution of the planetary gear 63 is
The shaft 63 of the planetary gear 63 is inserted into the elongated hole 99 formed in the intermediate plate 46.
Since “a” has entered, the operation is performed within the range of the elongated hole 99.

As shown in FIG. 13, the cam surface 83 moves in conjunction with the charge movement of the traveling plate 39, and the roller 82b slides from the inclined surface 83a to the flat surface 83b. At this time, the detection lever 82 rotates counterclockwise about the shaft 86, and in conjunction with this rotation, the locking lever 81 rotates clockwise about the shaft 84 by the bias of the spring 85. Thus, the locking lever 81 is rotated toward the locked position. At this time, since the hole 80a of the disk 80 is rotating in synchronization with the sprocket 74, the locking claw 81a slides on the upper surface of the disk 80 without entering the hole 80a as shown in FIG. Become. For this reason, the winding operation can be continued.

When the winding operation is continuously performed, the falling piece 39c of the traveling plate 39 comes into contact with the rising piece 43j of the switching shielding plate 43, and the traveling plate 39 moves the switching shielding plate 43 in the moving direction. Thereafter, the locked portion 39b of the traveling plate 39 contacts the lock claw 40a of the charge lock lever 40, but the locked portion 39b and the lock claw 40a
The charge lock lever 40 rotates counterclockwise about the rotation shaft 40c, so that the lock claw 40a escapes from the locked portion 39b. For this reason, the traveling plate 39 is continuously charged and moves to a position where the traveling plate 39 slightly exceeds the charging position as shown in FIG.

When the film is wound up by the length of one frame, the sprocket 74 makes exactly one revolution. At this time, the locking claw 81a of the locking lever 81 is
a to prevent the sprocket 74 from rotating. Further, at this time, the protrusion 81b of the locking lever 81 is engaged with the lower surface of the hoisting knob 23 to prevent the hoisting knob 23 from being hoisted.

When the sprocket 74 makes one rotation, 3
Since the step gear 72 also makes one rotation, the L-shaped piece 79 enters the notch portion 77 a from the circumferential surface of the notch disk 77, and the entire shielding plate 44 moves rightward by the bias of the spring 78, and Return to the state. Thus, the openings 44a to 44h are positioned on the optical axis of the photographing lenses 28a to 28h.

When the sprocket 74 makes one rotation, the notch 76a is located at a position facing the second rack 71.
Is disengaged from the second rack 71 and the gear portion 76b, the traveling plate 39 moves slightly rightward, and is locked in the charged state by the charge lock lever 40. At this time, one end 58a of the switching lever 58
Enters the step 43i of the switching shielding plate 43, and holds the switching shielding plate 43 in the state shown in FIG. In this state, the lower four apertures 43a to 43d expose the lower four apertures 50a to 50d, and the upper four apertures 50e to 50h are shielded by the switching shielding plate 43. I have.

Further, when the traveling plate 39 slightly moves to the right, the sun gear 62 slightly rotates counterclockwise as shown in FIG. Revolves counterclockwise. Therefore,
When the traveling plate 39 is locked at the charging position, the planetary gear 63 has moved to a position approaching the gear 61a. At this time, the intermittent gear 67 is in a state in which the engagement between the teeth 67a and the gear 61a has been completed, as shown in FIG.

Further, the shutter disks 35 to 38
During the charge movement of the traveling plate 39, the traveling plate 39 is stopped with two rotations. In this state, as shown in FIG.
Is stopped in a state where the angle from the end of the slit 35c to the aperture 50a around the center of the slit 35c is θ5.

The framing is performed by looking through the finder eyepiece window 14b, and the shutter button 26 is pressed when the subject starts the golf backswing and comes to the top position. As a result, the charge lock lever 40 is moved in conjunction with the shutter release as shown in FIG.
c, the locking claw 40a is disengaged from the locked portion 39a of the traveling plate 39, and the traveling plate 39 is
7 moves rightward. In addition, the lock claw 4
The engagement surface between Oa and locked portion 39a is formed by an arc surface centered on shaft 40c. Therefore, even if the shutter button 26 is pressed slowly, the movement start position of the traveling plate 39 does not shift.

The movement of the traveling plate 39 causes the first rack 39
a, the shutter disks 35 to 38 rotate simultaneously in the direction of the arrow shown in FIG. 6 via the gear 55, the gear 54, the gear 53, and the gear 52. At this time, the planetary gear 63 also rotates via the gear 53 and the sun gear 62, but the intermittent gear 67
Of the governor mechanism 41 is not transmitted to the shutter disks 35 to 38 because the teeth 67b are not meshed with the gear 61a.

As shown in the graph of FIG. 18, at time T ₁ after the shutter release, meshing between the teeth 67a of the intermittent gear 67 and the gear 61a is started. At this time, the teeth 67a
The gears 61a and 61a abut against each other, and the intermittent gear 67
The rotation of the intermittent gear 67 and the gear 61a may be locked because the intermittent gear 67, which is the planetary gear 63, rotates slightly clockwise around the sun gear 62 and escapes. Locking is prevented. In addition, if the gear 61a is a cycloid-type gear having a sharp tooth profile, the intermittent gear 67 and the gear 61a can rotate smoothly, which is effective.

At time T ₁ , the shutter disks 35 to
Reference numeral 38 denotes slits 35c and 36 shown by two-dot chain lines in FIG.
It has rotated to the position of c, 37c, 38c. During this rotation, the first exposure is performed while the slit 35c crosses the aperture opening 50a. At this time, the slit 37 of the shutter disk 37
c also crosses the aperture 50e, but the apertures 50e-50
Since h is shielded from light by the switching shield plate 43, no exposure is performed at the aperture 50e.

When the teeth 67a of the intermittent gear 67 mesh with the gear 61a, the drive of the governor mechanism 41 is transmitted to the shutter disks 35 to 36, and the rotation speed of the shutter disks 35 to 36 is reduced. The teeth 6 at time T ₂
The engagement between the gear 7a and the gear 61a is released. At this time, the shutter disks 35 to 38 are turned into the slits 3 indicated by solid lines in FIG.
5c, 36c, 37c, 38c,
Since the angle from the end of the slit 35c to the aperture 50b around the axis 35a is θ5, the second exposure can be performed in the same exposure time as the first exposure.

At time T ₃ , the teeth 67 b and the gear 61
The engagement with a is started. At this time, the shutter disk 35
38 are slits 35c and 36 shown by two-dot chain lines in FIG.
The slit 35c is rotated to the positions c, 37c, and 38c, and during this rotation, the slit 35c crosses the aperture opening 50b to perform the second exposure. Then, the intermittent gear 67 at time T ₄
The engagement between the gear 67b and the gear 61a is released. At this time, the shutter disks 35 to 38 have been rotated to the positions of the slits 35c, 36c, 37c, and 38c indicated by solid lines in FIG. 20, and the angle from the end of the slit 36c to the stop aperture 50c about the axis 36a. Is θ5, so that the third exposure can be performed in the same exposure time as the second exposure.

[0067] At the time of the time T _5, the teeth 67a and the gear 61
The engagement with a is started. At this time, the shutter disk 35
38 are slits 35c and 36 indicated by two-dot chain lines in FIG.
The slit 36c has been rotated to positions c, 37c and 38c, and during this rotation, the slit 36c crosses the aperture opening 50c to perform the third exposure. Then, the intermittent gear 67 at time T ₆
Of the gear 61a with the gear 67a is released. At this time, the shutter disks 35 to 38 are rotated to the positions of the slits 35c, 36c, 37c, and 38c indicated by solid lines in FIG. 21, and the angle from the end of the slit 36c to the stop aperture 50d about the axis 36a. Is θ5, so that the fourth exposure can be performed in the same exposure time as the third exposure.

At the time T ₇ , the teeth 67 b and the gear 61
The engagement with a is started. At this time, the shutter disk 35
38 are slits 35c and 36 shown by two-dot chain lines in FIG.
The slit 36c has been rotated to the positions c, 37c, and 38c. During this rotation, the slit 36c crosses the aperture opening 50d to perform the fourth exposure. Then, the intermittent gear 67 at time T ₈
The engagement between the gear 67b and the gear 61a is released. At this time, the shutter disks 35 to 38 have been rotated to the positions of the slits 35c, 36c, 37c, and 38c shown by solid lines in FIG. 22, and the angle from the end of the slit 37c to the stop aperture 50e about the axis 37a. Is θ5, the fifth exposure can be performed in the same exposure time as the fourth exposure.

The shutter disks 35 to 38 are positioned at slits 35c, 36c, 37c, 38c indicated by solid lines in FIG.
That is, when making one rotation, the traveling plate 39 has moved to the position shown in FIG. At this time, the falling piece 39c of the traveling plate 39 contacts the other end 58c of the switching lever 58, and the switching lever 58 rotates clockwise about the shaft 58b. By the rotation of the switching lever 58, one end 58a of the switching lever 58 is disengaged from the step portion 43i of the switching shielding plate 43, and the switching shielding plate 43 is moved rightward by the bias of the spring. The switching shielding plate 43 is arranged to move immediately behind the aperture openings 50a to 50h. Therefore, the size of the openings 43a to 43h can be made as small as possible, and the amount of movement of the switching shielding plate 43 at the time of switching can be reduced.

The movement of the switching shielding plate 43 causes the opening 43 to move.
a to 43d are retracted from the optical axis of the photographing lenses 28a to 28d, and the openings 43e to 43h are
It is located on the optical axis of 8h. For this reason, the switching shielding plate 43
Shields the aperture openings 50a to 50, and stops the aperture openings 50e to 50e.
Expose 50 h.

[0071] Then, at time T _9, engagement of the teeth 67a and the gear 61a is started. At this time, the shutter disks 35 to 38 are connected to the slits 35 shown by two-dot chain lines in FIG.
c, 36c, 37c, 38c have been rotated,
During this rotation, the slit 37c crosses the aperture opening 50e to perform the fifth exposure. The teeth 6 at time T ₁₀
The engagement between the gear 7a and the gear 61a is released. At this time, the shutter disks 35 to 38 are connected to the slits 3 indicated by solid lines in FIG.
5c, 36c, 37c, 38c,
Further, since the angle from the end of the slit 37c to the stop aperture 50f around the axis 37a is θ5, the fifth
The sixth exposure can be performed in the same exposure time as the exposure of the above.

[0072] At the time of the time T _13, the teeth 67b and the gear 61
The engagement with a is started. At this time, the shutter disk 35
38 are slits 35c and 36 indicated by two-dot chain lines in FIG.
The slit 37c has been rotated to the positions c, 37c, and 38c, and during this rotation, the slit 37c crosses the aperture opening 50f to perform the sixth exposure. Then, the engagement between the teeth 67a and the gear 61a is released at time T _12. At this time, the shutter disks 35 to 38 are turned into the slits 35c and 3 shown by solid lines in FIG.
6c, 37c, and 38c, and the stop aperture 5 from the end of the slit 38c about the axis 38a.
Since the angle up to 0 g is θ5, the seventh exposure can be performed in the same exposure time as the sixth exposure.

[0073] At the time of the time T _13, the teeth 67a and the gear 61
The engagement with a is started. At this time, the shutter disk 35
38 are slits 35c and 36 indicated by two-dot chain lines in FIG.
The slit 38c is rotated to the positions c, 37c, and 38c, and during this rotation, the slit 38c crosses the aperture opening 50g to perform the seventh exposure. Then, the engagement between the teeth 67a and the gear 61a is released at time T _14. At this time, the shutter disks 35 to 38 are connected to the slits 35c, 3 shown by solid lines in FIG.
6c, 37c, and 38c, and the stop aperture 5 from the end of the slit 38c about the axis 38a.
Since the angle up to 0h is θ5, the eighth exposure can be performed in the same exposure time as the seventh exposure.

[0074] At the time of the time T _15, the teeth 67b and the gear 61
The engagement with a is started. At this time, the shutter disk 35
38 are slits 35c, 36c, 37 shown in FIG.
It has been rotated slightly before the positions of c and 38c. During this rotation, the slit 38c crosses the aperture opening 50h, and the last exposure is performed. Then, the teeth 67b at time T ₁₆
And the gear 61a are disengaged from each other.
9 is completed.

When the movement of the traveling plate 39 is completed, the roller 82b of the detection lever 82 is moved to the slope 8 of the cam surface 83.
It slides to 3a. For this reason, the detection lever 82 is
And the locking lever 81 rotates counterclockwise about the shaft 84 in conjunction with this rotation.
The locking claw 81a of the locking lever 81 retreats from the hole 80a of the disk 80 to release the rotation lock of the sprocket 74, and the ridge 81b retracts from the bottom surface of the winding knob 23, so that the winding knob 23 is wound up. The operation lock is also released.

The time T ₁₆ , that is, the time from the shutter release to the stop of the rotation of the shutter disks 35 to 38 is approximately 0.8 seconds. During this time, since the roller 82b of the detection lever 82 is in a state of sliding on the plane 83b of the cam surface 83, the hole 80a of the disc 80
The locking claw 81a of the locking lever 81 is in a state of being inserted into the lock lever 81. Therefore, even if the winding operation is performed during photographing, the film is not wound.

By repeating photographing as described above, the exposed film 21 is sequentially placed in the cartridge 2.
It gets caught in 2. After the photographing is completed, it is submitted to a developing laboratory as it is. When processing is performed in a developing station, the cartridge 22 is taken out from the bottom cover 14a of the rear cover 14, so that development processing and printing processing are performed in a conventional process, and a print photograph 100 as shown in FIG. 27 is obtained. This print photo 100
Has a size of 89 × 158 mm.

[0078]

As described above, according to the first aspect,
At the beginning of the rotation, all the shielding plates are engaged to move all the shielding plates to the shielding position against the bias of the spring, and at the end of the rotation, the engagement with the all the shielding plates is released and all the shielding plates are released. Since the cam plate that is returned to the open position by the bias of the spring is coaxially and integrally arranged with the gear, the winding mechanism is simplified, and the size and cost can be reduced. Further, in this embodiment, since the notched disk and the gear portion are integrally formed, the number of parts is reduced, and the cost can be reduced.

[0079]

[Brief description of the drawings]

FIG. 1 is an exploded perspective view schematically showing a shutter unit.

FIG. 2 is an exploded perspective view of the film unit with a lens.

FIG. 3 is a cross-sectional view of the film unit with a lens.

FIG. 4 is a longitudinal sectional view of the lens-fitted film unit.

FIG. 5 is an exploded perspective view showing a main part of the shutter unit.

FIG. 6 is an explanatory view schematically showing a drive system of a shutter disk.

FIG. 7 is an exploded perspective view showing another main part of the shutter unit.

FIG. 8 is a perspective view of a three-stage gear.

FIG. 9 is an explanatory diagram showing an arrangement relationship between a notched disk and an L-shaped piece;

FIG. 10 is a schematic explanatory view showing a moving process of all the shielding plates.

FIG. 11 is a schematic explanatory view showing an initial state of a shutter disk.

FIG. 12 is a schematic explanatory view showing a state of a shutter disk during winding.

FIG. 13 is a schematic explanatory view showing a film winding stopping mechanism during charging.

FIG. 14 is a schematic plan view showing a state where a locking claw is sliding on a disk during charging.

FIG. 15 is a schematic explanatory view showing movement of the traveling plate and the switching shield during charging.

FIG. 16 is a schematic explanatory view showing a traveling plate and a switching shield after charging is completed.

FIG. 17 is a schematic explanatory view showing a state of a shutter disk after charging is completed.

FIG. 18 is a graph showing the rotation position of the shutter disk with respect to time.

FIG. 19 is a schematic explanatory view showing the shutter disk in a state where the deceleration drive is transmitted after the completion of the first exposure.

FIG. 20 is a schematic explanatory view showing the shutter disk in a state where the deceleration drive is transmitted after the completion of the second exposure.

FIG. 21 is a schematic explanatory view showing a shutter disk in a state where a deceleration drive is transmitted after completion of a third exposure.

FIG. 22 is a schematic explanatory view showing the shutter disk in a state where a deceleration drive is transmitted after the completion of the fourth exposure.

FIG. 23 is a schematic explanatory view showing a state in which the switching shielding plate is switched.

FIG. 24 is a schematic explanatory view showing a shutter disk in a state where deceleration drive is transmitted after completion of a fifth exposure.

FIG. 25 is a schematic explanatory view showing the shutter disk in a state where the deceleration drive is transmitted after the completion of the sixth exposure.

FIG. 26 is a schematic explanatory view showing the shutter disk in a state where the deceleration drive is transmitted after the completion of the seventh exposure.

FIG. 27 is a front view showing the obtained print photograph.

[Explanation of symbols]

 28a-28h Shooting lens 35-38 Shutter disk 35c, 36, 37c, 38c Slit 39 Running plate 41 Governor mechanism 43 Switching shield plate 44 All shield plate 50a-50h Aperture opening 74 Sprocket

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-2208 (JP, A) JP-A-5-158109 (JP, A) JP-A 5-142619 (JP, A) JP-A-2- 105132 (JP, A) Japanese Utility Model Hei 6-10941 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G03B 9/08-9/54 G03B 15/16 G03B 17/04 G03C 3/00

Claims (1)

(57) [Claims] 1. A travel plate is moved from a charge position to a travel completion position by a shutter release operation, and the movement of the travel plate rotates a shutter disk formed with a slit from an initial position so as to cross a plurality of shutter openings. In a continuous shooting shutter device that performs a plurality of exposures with a time lag by sequentially passing through the slit, a sprocket that engages with the film perforation and rotates once while the film is transported by one frame, The gear rotated by the sprocket, meshes with the rack of the traveling plate, returns the traveling plate from the traveling completion position to the charging position, and interlocks with this gear to reversely rotate the shutter disk to the initial position, and the shutter opening simultaneously. It is freely movable between the open position to open and the shield position to block all at once, and the open position by a spring. , And rotates integrally and coaxially with the gear, and engages with all the shield plates at the beginning of rotation to move all of the shield plates to the shield position against the bias of the spring. A shutter plate for releasing the engagement with all the shielding plates at the end of the rotation and returning the all shielding plates to the open position by the bias of the spring.