JP3530230B2 - Continuous shooting camera - 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 shooting camera which sequentially performs exposure at short time intervals by one release operation.

[0002]

2. Description of the Related Art Conventionally, JP-A-5-45697 discloses
Increase the number of frames that are automatically exposed in one continuous shooting,
Moreover, a continuous shooting camera has been proposed that makes it easy to understand the temporal order of each frame. In this continuous shooting camera, two shutter discs are simultaneously rotated once by a stepping motor, and two slit discs are provided on the shutter discs so that each slit is displaced in the radial direction. The image is continuously exposed in the order of the lower row from the left column to the right column, and the upper row from the left column to the right column in 8 frames in which one screen is divided into upper and lower 2 rows and left and right 4 columns by sequentially traversing the shutter opening. One frame is approximately 10 x 8.3 mm
In addition, both edges of one screen are cut a little at the time of printing, so it has a panoramic size of 24 × 36 mm. From the exposed photographic film, print on each screen at the time of printing work, and 89 x 127
mm mm panoramic prints are made. By observing the obtained prints, the images in which the movement of the subject stopped at each moment are recorded in the upper row from left to right column, and from the lower row from left to right column, making it easy to analyze various movements. You will be able to.

By the way, in the continuous shooting camera described in the above publication, the exposure time for the slit to cross the shutter opening is set to 1 in order to stop the motion of the subject playing sports and take a picture.
/ 250sec or more is set. Then, the microcomputer controls the stepping motor to intermittently rotate the shutter disk so that the exposure interval is different from the exposure time, and the continuous shooting time of Talltal from the shutter release to the completion of the final exposure. Is long. Then, in order to always stop each shutter disk at the origin position, a reflector plate for origin detection is fixed to one of the shutter disks, and this is detected by a reflective photosensor to control the stop of the stepping motor. It is carried out.

However, since the continuous shooting camera described above only exposes eight frames in one release, it is appropriate for the photographer to shoot the movement of the subject and the shutter release. Even if you take a picture of when to do the timing, if you are not accustomed to it, you can not shoot a series of motions from the beginning to the end of the exercise within the continuous shooting time of 8 frames People who have taken important points in the movement, such as the image of the moment of impact during a swing in golf, may not be obtained in each of the 8 frames, It will result in dissatisfaction.

In order to eliminate such an adverse effect, when considering a continuous shooting camera which increases the number of shutter discs and sequentially exposes time-series images in more than 8 frames, for example, 16 frames,
Since the shutter disk provided with two slits has a large diameter, there is a drawback that the camera itself becomes large even if the number of shutter disks is increased. Therefore, considering a camera in which a plurality of small-diameter shutter discs each having one slit are arranged and each slit sequentially traverses a pair of adjacent shutter openings for exposure, the camera itself is downsized, Since the shutter disc has a small diameter, it is not possible to obtain an exposure time of 1/250 sec or more with one rotation of the shutter disc. Therefore, in order to obtain an exposure time of 1/250 sec or more, it is desired to rotate a small-diameter shutter disc twice.

When the small-diameter shutter disc is rotated twice in this manner, the same shutter opening is crossed twice,
It is necessary to provide a shield plate switching mechanism that switches the shield of the shutter opening between the first rotation and the second rotation of the shutter disk. As a unit of the shutter opening that is switched between the first rotation and the second rotation of the shutter disk, it is preferable to switch the shutter opening row between the lower row and the upper row. Therefore, two rows of aperture rows are provided on the shield plate so as to alternately shield the shutter aperture rows from the upper and lower rows, and two rows of aperture rows are provided, and the shield plate is moved by the amount of the shift amount to perform one rotation of the shutter disk. The shutter opening row may be switched between the eye and the second rotation.

[0007]

However, when the shielding plate switching mechanism as described above is used in a continuous shooting camera that continuously shoots 16 frames, the exposure interval is substantially shorter than that in an 8-frame continuous shooting camera. Since it is halved, it is necessary to have a mechanism for moving the shield plate in this short time, and this mechanism may become a complicated mechanism, leading to an increase in cost.

Since the shutter disc that rotates twice has a high speed and a small diameter, a reflector plate for origin detection is fixed to the shutter disc, and the origin position is of a type in which this is detected by a reflection type photo sensor. The detection mechanism has a drawback that it is difficult to detect a slight angle deviation and it is difficult to always stop the shutter disk at the origin position.

The present invention has been made to solve the above-mentioned problems of the prior art, and the first object is to:
A second object is to reduce the cost of the switching shield plate that reliably switches the shutter opening rows on the upper side and the lower side between the first rotation and the second rotation of the shutter disk that rotates at a high speed. Is to provide a continuous shooting camera in which a shutter disc having a small diameter and a high speed is always stopped at the origin position.

[0010]

In the continuous shooting camera of the present invention, each shutter mechanism is movably arranged and the upper shutter row and the lower shutter row are shielded by the first rotation of the shutter disk. And the second rotation, N switching shields that are switched selectively and the switching shield of the adjacent shutter mechanism are moved by switching the shutter mechanism in conjunction with driving of the shutter mechanism, and the Nth shutter is driven. And a shielding plate moving mechanism for moving and switching the switching shielding plate of the shutter mechanism which is driven first in cooperation with the driving of the mechanism.

[0011]

The shutter mechanism is provided with two shutter openings in the upper and lower rows and four rows in the left and right rows, a total of eight shutter openings, a set of shutter discs, and a switching shield plate. N such shutter mechanisms are arranged side by side in the film feeding direction.
A set of shutter disks is sequentially driven twice for each rotation. The shield plate moving mechanism moves the switching shield plate of the adjacent shutter mechanism in cooperation with the driving of the shutter mechanism to selectively switch the shield between the upper shutter opening row and the lower shutter opening row of this shutter mechanism. At the same time, the switching shield plate of the first shutter mechanism that is driven in association with the driving of the Nth shutter mechanism is moved to shield the upper shutter row and the lower shutter row of this shutter mechanism. To switch selectively.

According to this, while the shield plate moving mechanism guides the subject light to the exposure frame by one of the N shutter mechanisms, the shutter mechanism that is not performing the next exposure is switched. Since the shielding plate is moved to switch the shielding of the shutter opening row on the upper side or the lower side of the shutter mechanism, the first and second rotations of the shutter disk are performed.
It is possible to reliably switch the shutter opening row even with a short exposure interval from the rotation eye.

According to the second aspect of the present invention, two gears that rotate in a rotation ratio of 1: 3 with respect to two rotations of the shutter disk in association with the driving of the shutter mechanism, and these gears are rotated. A signal section provided at each position corresponding to the origin position, a sensor for detecting each of these signal sections, and a drive stopping means for stopping the drive of the shutter mechanism when the signal section is detected by the sensor. It is provided for each shutter mechanism. According to this, each gear is provided with a signal portion, and these gears are linked to the drive of the shutter mechanism to rotate at a rotation ratio of 1: 3 with respect to two rotations of the shutter disk. It is possible to detect even a slight angle deviation of the shutter disk, as compared with the case where a signal section is provided in the gear and the signal section is detected by a sensor. As the sensor, two sensors may be provided, and each signal may be detected by each sensor. Alternatively, one gear may be provided by arranging each gear coaxially and forming the signal part as a slit of a transmission hole. The two sensors may be used to detect the two signal parts.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, the front of the continuous shooting camera 11 has a total of 16 openings 12a-12p, which are two in the vertical direction and eight in the horizontal direction.
Are formed, and the taking lenses 13a to 13p are exposed in the openings 12a to 12p, respectively. Further, the viewfinder objective window 14 is provided above the central portion of the upper opening rows 12i to 12p in order to reduce parallax.
The aspect ratio is almost the same as the frame divided into 16 pieces in total.

A shutter button 15, a power switch 17, a liquid crystal display panel 18, and a continuous shooting time change switch 19 are arranged on the upper surface of the continuous shooting camera 11. When the continuous shooting mode is selected, the continuous shooting time change switch 19 sets the total continuous shooting time from the shutter release to the exposure of the last frame to a low speed (2
Second), standard (1 second), and high speed (0.5 second). Each time the push operation is performed, low speed, standard, and high speed are selected in order. It Reference numeral 20 is a lever for opening the back cover 21,
Operate when loading the photographic film.

The shutter unit 22 of the continuous shooting camera 11 is shown in FIG. The shutter unit 22 has two screens, one up and down.
Two shutter mechanisms 23 and 24 for eight continuous shots for exposing eight frames divided into four columns on the right and left sides are arranged side by side, and each of these parts includes a front lid 25 and a partition plate 26. ,
And a case 27, which is incorporated in a thin shutter box.

As shown in FIG. 3, the front plate 25 has 16 circular exposure openings 28a to 28p formed on the optical axes of the taking lenses 13a to 13p. These openings 28
On the front surface of a to 28p, 16 photographing lenses 13a to 13p are incorporated one by one in a recessed portion. These taking lenses 13a to 13p are fixed to the front plate 25 by two lens holders 29 and 30.

The partition plate 26 is provided with photographing lenses 13a-1.
Sixteen aperture openings 31a to 31p are formed on the optical axis of 3p. These diaphragm openings 31a to 31p also serve as fixed diaphragms and shutter openings, and their inner diameters are the same. Aperture openings 31a to 31d,
Reference numerals 31i to 31l denote shutter openings on the shutter mechanism 23 side, and aperture openings 31e to 31h and 31m to 31p.
Is the shutter opening on the shutter mechanism 24 side.

Eight shutter discs 32 to 39 having the same outer diameter and thickness are rotatably provided on the front surfaces of the aperture openings 31a to 31p. Of these shutter discs 32 to 39, four shutter discs 36, 37, 38, 39 have axes 40.
To 43 are arranged in the upper stage, and eight aperture openings 31i to 31 are arranged.
At a position above the horizontal line passing through the center of p and at a position equidistant from the adjacent pair of aperture openings 31i to 31p, the axes 44 to 4 of the four shutter discs 32 to 35 are formed.
7 is a position below a horizontal line passing through the centers of the eight aperture openings 31a to 31h arranged in the lower stage, and at a position equidistant from the adjacent aperture openings 31a to 31h. Of these shutter disks, four shutter disks 32, 33, 36, 37 are shutter disks on the side of the shutter mechanism 23, and four shutter disks 34, 35, 38, 39 are shutter disks. It is a shutter disk on the mechanism 24 side.

The shutter disks 32 to 39 have axes 40 to 40, respectively.
Substantially fan-shaped openings (hereinafter referred to as “slits”) 32a, 33a, 34a, 35a, 36a, 37 on the circumference having a radius from 47 to the aperture openings 31a to 31p.
One a, 38a, and 39a are formed, respectively. These slits 32a, 33a, 34a, 35
The length of a, 36a, 37a, 38a, 39a (the length of the shutter disk in the radial direction) is equal to or larger than the inner diameters of the aperture openings 31a to 31p. Further, the shutter disks 32 to 39
The outer circumference of the gears 32b, 3 having the same number of teeth over the entire circumference.
3b, 34b, 35b, 36b, 37b, 38b, 39
Gear 3 with b formed and having the same center of rotation in the vertical direction
2b and gear 36b, gears 33b and 37b, gear 34b and gear 38b, and gears 35b and 39b mesh with each other.

As shown in FIG. 4, on the inner wall 27a of the case 27, 16 rectangular exposure openings 48a to 48p are formed on the optical axes of the taking lenses 13a to 13p, and fixed to the back side. Two openings 5 for inserting the motor gears 51 and 52 of the stepping motors 49 and 50
3, 54 are formed respectively. A rotating mechanism, a shielding plate moving mechanism, and an initial position detecting mechanism are incorporated into the inner wall 27a from the front side. The rotation mechanism is a gear train for transmitting the rotations of the stepping motors 49 and 50 to the shutter discs 32 to 39, and includes two stepping motors 49 and 50, motor gears 51 and 52, and a two-stage gear 5.
5, 56. The stepping motors 49 and 50 respectively rotate the shutter disks 32 to 39 twice for the exposure of 16 frames of two screens.

The shield plate moving mechanism includes a stepping motor 4
This is a mechanism for transmitting the rotations of 9, 50 to the switching shield plates 57, 58 via the reciprocating sliding member rotating mechanism and reciprocating these switching shield plates 57, 58 in the horizontal direction, respectively. The mechanism is a motor gear 51,
The crank gear 59 and the switching shield plate 58 are included, and the mechanism on the shutter mechanism 24 side includes the motor gear 52, the crank gear 60, and the switching shield plate 57.

The initial position detecting mechanism includes shutter discs 32 to 32.
39 is a mechanism for detecting two rotations of the motor 39, and the mechanism on the shutter mechanism 23 side is a motor gear 51, a two-stage gear 61, a gear 63, gears with slits 65 and 66, and a photo interrupter (hereinafter referred to as “PI sensor”). From 69 and
The mechanism on the shutter mechanism 24 side includes a motor gear 52, a two-stage gear 62, a gear 64, gears 67 and 68 with slits,
And a PI sensor 70. A finder holding frame 71 is formed integrally with the case 27, and the objective lens 72 is attached to the finder holding frame 71.
And an eyepiece lens 73 are incorporated.

FIG. 5 schematically shows an arrangement of a rotating mechanism, a shield plate moving mechanism, and an initial position detecting mechanism.
As shown in detail in FIGS. 6 and 7, the rotation mechanism of the shutter mechanism 23 includes a large gear 5 in which the motor gear 51 is a two-stage gear 55.
The small gear 55b of the two-stage gear 55 meshes with the gears 36b and 37b of the shutter discs 36 and 37, respectively. As a result, the rotation of the stepping motor 49 causes the slits 36 of the shutter disks 36 and 37 to move.
a and 37a sequentially cross the four aperture openings 31i to 311 on the upper side, and four frames 74e on the upper side of one screen 74
74h are exposed respectively, and at the same time, the slits 32a and 33a of the shutter disks 32 and 33 sequentially cross the four diaphragm openings 31a to 31d on the lower stage side to form one screen 7.
Of the four, the lower four frames 74a to 74d are exposed.

The rotating mechanism of the other shutter mechanism 24 is arranged symmetrically with respect to the rotating mechanism of the shutter mechanism 23, and the slits 38a, 39a of the shutter disks 38, 39 are rotated upward by the rotation of the stepping motor 50. Of the four diaphragm apertures 31m to 31p are sequentially traversed, and at the same time, the slits 34a of the shutter disks 34 and 35,
The reference numeral 35a sequentially traverses the four diaphragm openings 31e to 31h on the lower side to expose eight frames 75a to 75h obtained by dividing one screen 75.

In the shield plate moving mechanism of the shutter mechanism 23, as shown in FIGS. 7 and 8, the crank gear 59 meshes with the small gear 55b, and the crank gear 59 makes two rotations of the shutter discs 32 to 39. The rotation ratio is three rotations. A projecting pin 59 a is formed on the circumference of the crank gear 59. Further, the switching shield plate 58 on the shutter mechanism 24 side is provided so as to be linearly movable in the left-right direction, and an arm 76 extending leftward is integrally formed therewith. A long hole 76a extending in the vertical direction is formed on the tip side of the arm 76, and the protruding pin 59a is engaged with the long hole 76a. Therefore, the amount of movement of the switching shield plate 58 is twice as long as the crank length from the shaft 59b of the crank gear 59 to the protruding pin 59a.

The switching shield plate 58 includes a shutter mechanism 24.
The four aperture openings 58a to 58d that simultaneously expose the four lower aperture rows 31e to 31h and the four apertures 58e to 58h that simultaneously expose the four upper aperture rows 31m to 31p are arranged in the horizontal direction. It is formed by shifting the crank length by twice the crank length, and for each half rotation of the crank gear 59, one of the lower aperture row 31e to 31h and the upper aperture row 31m to 31p is selected. To shield.

The shield plate moving mechanism of the shutter mechanism 24 is also arranged symmetrically with respect to the shield plate moving mechanism of the shutter mechanism 23, and the protruding pin 60a of the crank gear 60 is inserted into the elongated hole 77a of the arm 77 of the switching shield plate 57. Are engaged, and the switching shield plate 57 has lower opening rows 57a to 57 and upper opening rows 57d to 57h for each half rotation of the crank gear 60.
And the four diaphragm aperture rows 31 on the lower side of the shutter mechanism 23.
a to 31d and four upper aperture diaphragm aperture rows 31i to 31l
Either one of and is shielded as an alternative.

The initial position detecting mechanism of the shutter mechanism 23 is
Gears 65 and 66 with two slits are provided to detect even minute deviations of the shutter disks 32, 33, 36 and 37. These slit gears 65, 66
Is provided with slits 65a and 66a of through holes, which are signal portions, at positions corresponding to the origin position. The rotation of the gear 66 with slits is transmitted from the small gear 55b through the large gear 61a of the two-stage gear 61 and the small gear 61b of the two-stage gear 61, and the rotation is transmitted once for two rotations of the shutter discs 32 to 37. It has a rotation ratio of rotation. Rotation is transmitted from the shutter disc 36 through the gear 63 to the other gear 65 with slits, and has a rotation ratio of three rotations with respect to two revolutions of the shutter discs 32 to 37. These slit gears 65 and 66 are coaxially and rotatably supported, and their rotations are opposite to each other. The transmissive PI sensor 69 has mutual slits 65a and 66.
The overlapping of a is detected, and the shutter disk 3
It is possible to detect the origin position with high accuracy when 2 to 39 rotate twice.

The initial position detecting mechanism of the shutter mechanism 24 is also arranged symmetrically with respect to the initial position detecting mechanism of the shutter mechanism 23, and the shutter discs 34, 35, 38, 39.
In order to detect even a slight angle deviation of the slits, the two gears 67 and 68 with slits are set to a rotation ratio of 3: 1 and the slits 65 are
The PI sensor 69 detects the overlapping of a and 66a.

Such a shutter unit 22 is shown in FIG.
As shown in, the dark box 8 formed in the inner view of the continuous shooting camera 11
It is attached to the front of 0. In the dark box 80, 16 exposure frames 81 divided into upper and lower 2 and left and right 8 columns by a partition wall are formed for each optical axis of the taking lenses 13a to 13p, and one screen is arranged in two rows vertically and four rows horizontally. Make up. The exposure frame 81 has a size of, for example, about vertical 10 × horizontal 8.3 mm, and the periphery is slightly cut at the time of printing, so one screen is 20 vertical.
× The width is 36 mm.

As shown in FIG. 10, a cartridge loading chamber 84 and a film winding chamber 85 are arranged on the left and right of the dark box 80. The photo film 86 is wound up by rotating a spool 87 provided in the film winding chamber 85, and pulled out from a cartridge 88 loaded in a cartridge loading chamber 84. A motor 87a for winding the film is built in the spool 87, and the spool 87 is rotated through an internal gear when the film is wound up, and when the film is rewound, the spool 89 is loaded into the cartridge loading chamber 84 through the gear 89 and the film feeding mechanism 90. The rewinding fork 91 provided inside is rotated in the opposite direction.

The film perforation 86a includes:
The sprocket 92 is engaged and rotated by feeding the film. A through-hole slit plate 93 having a large number of through-hole slits radially provided is coaxially fixed to the sprocket 92. The through hole slit plate 93 is photoelectrically detected by the PI sensor 94. The PI sensor 94 sends a pulse every time the through-hole slit passes.

The circuit configuration of the continuous shooting camera 11 is shown in FIG. The shutter unit 22 and the feeding of the photo film are C
It is controlled by the PU 100, and these sequences are written in the program ROM 101. For the photo film feeding sequence, turn on the power switch 17.
After that, when the opening / closing signal 102 of the back cover 21 is obtained, the drive signal of the motor 87a is sent to the motor driver 103. After that, when the PI sensor 94 obtains the number of through-hole slits corresponding to two screens, a stop signal for stopping the driving of the motor 87a is sent to the motor driver 103.

The CPU 100 has a built-in driver for driving the liquid crystal display panel 18, and controls the liquid crystal display panel 18 to display a value updated every two counts every time the film is wound. Continuous shooting time setting circuit 10
6 is a CPU according to the operation of the continuous shooting time change switch 19.
A mode signal corresponding to the type of continuous shooting time is sent to 100.

The motor drivers 104 and 105 are CPUs.
Receiving the control signal and the clock pulse from 100, the drive pulse is supplied to the stepping motors 49 and 50, respectively. As is well known, since the stepping motors 49 and 50 rotate in proportion to the number of drive pulses supplied, the rotation angle can be determined by the number of drive pulses, and the drive pulse can be changed to a frequency to generate a pulse. The speed of rotation can be controlled by changing the interval.

The number of drive pulses supplied from the motor drivers 104 and 105 to the stepping motors 49 and 50 is as shown in FIG.
Each is counted at 08. Then, the CPU 100
The counts of the counters 107 and 108 are monitored, and a control signal is sent to the motor drivers 104 and 105 each time the count value reaches a predetermined value. The motor drivers 104 and 105 change the frequency and the number of poles of the drive pulse supplied to the stepping motors 49 and 50 according to the control signal, and control the speed and the rotation direction of the stepping motors 49 and 50.

The PI sensors 69 and 70 are the shutter disc 3
When detecting 2 rotations of 2 to 37, the CPU 100 outputs a detection signal.
Send to. The CPU 100 monitors the detection signals from the PI sensors 69 and 70, and controls the driving of the stepping motors 49 and 50 to stop when the detection signals are obtained.
At this time, the counters 107 and 108 are reset, and then the film winding process is performed.

The photographing sequence is as shown in FIG.
In order to expose time-series images on 16 frames of 2 screens, the stepping motors 49 and 50 are used as shutter disks 32 to 39.
Are alternately driven every one rotation. That is, only the stepping motor 49 is driven first, and the driving of the stepping motor 49 is stopped when the count of the counter reaches the count value for one rotation of the shutter disks 32, 33, 36, 37. During this time, the action of the switching shield plate 57 causes 4
Exposure is sequentially performed only on the frames 74a to 74d.

Next, the stepping motor 50 is driven almost at the same time as the stop, and the counting of the counter is performed by the shutter disk 3.
When the count value for one rotation of 4, 35, 38, 39 is reached, the driving of the stepping motor 50 is stopped. During this period, the four pieces 75a to
The exposure is sequentially performed on 5d. Further, at the same time as the stop, only the stepping motor 49 is driven, and when the detection signal is obtained from the PI sensor 69, the driving of the stepping motor 49 is stopped. During this period, the four shields 74e to 74h are exposed by the action of the switching shield plate 57. Finally, the stepping motor 50 is driven at substantially the same time as the stopping, and the driving of the stepping motor 50 is stopped when a detection signal is obtained from the PI sensor 70. During this period, the exposure of the four frames 75e to 75h is sequentially performed by the action of the switching shield plate 58.

The driving of the stepping motors 49 and 50 is
The pulse interval is controlled stepwise so as to rotate each exposure time at a high speed only at the moment of exposure so that each exposure time becomes 1/250 seconds, for example. That is, each slit 32a-39
Since the rotational positions of the shutter discs 32 to 39 when a crosses the aperture openings 31a to 31p are known, immediately before each exposure, the motor drivers 104 and 105 drive pulses whose frequencies gradually increase. That is, as shown in FIG. 14, drive pulses whose pulse intervals are gradually shortened to T1, T2, and T3 are sent to the stepping motors 49 and 50 to accelerate the rotation of the stepping motors 49 and 50, and immediately after the exposure, the pulse is pulsed. A drive pulse whose intervals gradually increase to T3, T2, T1 is sent to the stepping motors 49, 50,
The rotations of the stepping motors 49 and 50 are decelerated. Then, each exposure interval is made longer than the exposure time by giving a drive pulse having a relatively long pulse interval.

As shown in Table 1, the exposure interval varies depending on the continuous shooting time, and differs for each frame for each continuous shooting time. Then, for example, when the continuous shooting time is set to a low speed, as shown in FIG.
~ 39 rotates to expose time-series images in 16 frames.

[0043]

[Table 1]

Next, the operation of the continuous shooting camera having the above configuration will be described. The initial state of the shutter unit 22 is
As shown in FIG. 16, the shutter disks 32, 36, 34,
The slits 32a, 36a, 34a, 38a of 38 are located on the left side of the horizontal line passing through the centers of the shafts 44, 40, 46, 42, and the shutter disks 33, 37, 35,
The slits 33a, 37a, 35a, 39a of 39 are in a state of being shifted by 180 ° in the circumferential direction, and the aperture openings 31a to 31p are shielded by the shutter discs 32 to 39. The slit gears 65 and 66 of the shutter mechanism 23 and the slit gears 67 and 68 of the shutter mechanism 24 are the slits 65a, 66a and 67, respectively.
a and 68a are stopped in a state of being overlapped with each other at a position above a vertical line passing through the rotation axis.

In the initial state of the switching shield plate 57, as shown in FIG. 8, the openings 57a to 57d are the aperture openings 31a to 31.
d is exposed and the openings 51e to 51h are the diaphragm openings 31i to 3h.
1l is shielded. Further, in the initial state of the switching shield plate 58, the openings 58a to 58d shield the diaphragm openings 31e to 31h, and the openings 58e to 58d form the diaphragm openings 31m to 31p.
Is exposed.

After turning on the power switch 17, the photographer looks at the series of movements of the sports subject, and how long it is appropriate to capture the movements of the subject.
In addition, it is determined when the shutter release timing is to be performed, and the continuous shooting time change switch 19 is operated to match the intended continuous shooting time.

For photographing, as shown in FIG. 17, the subject takes back and at the same time operates the continuous shooting release button 15. As a result, the stepping motor 49 starts driving, the motor gear 51 rotates counterclockwise as shown in FIG. 18, and the shutter disc 3 is rotated via the two-step gear 55.
2 and 33 rotate clockwise, and shutter disks 36 and 37 rotate counterclockwise, respectively. The rotation at this time controls the driving of the stepping motor 49 so that the exposure interval is different from the exposure time. Then, the openings 57a to 57d of the switching shield plate 57 have the aperture openings 31a to 3d.
200ms after the release because 1d is exposed
After that, the slit 32a of the shutter disk 32 is closed by the aperture opening 31.
The first exposure is performed on the frame 74a across the line a.

At this time, the opening 57e of the switching shield plate 57
Since ~ 57h shields the diaphragm openings 31i-31l, exposure is not performed in these diaphragm openings 31i-31l. Further, as shown in FIG. 19, since the crank gear 59 rotates counterclockwise, the switching shield plate 58
Moves to the left and slightly exposes the aperture openings 31e to 31h at the openings 58a to 58d, but since the stepping motor 50 on the shutter mechanism 24 side is not driven, the aperture openings 31e to 31h and the aperture opening 31m. No exposure is performed at .about.31p. Further, at this time, the slit gear 66 is in a state of being rotated to a position of a half angle with respect to the rotation angle of the shutter discs 32, 33, 36, 37. 1.5 for the rotated angle of 32, 33, 36, 37
It has been rotated to the double angle position.

100 ms after the first exposure, the slit 32a crosses the aperture opening 31b and crosses the frame 74b.
The second exposure, and 100 ms after this, the slit 33a of the shutter disk 33 traverses the aperture opening 31c and the third exposure on the top 74c.
After ms, the slit 33a crosses the aperture opening 31d to perform the fourth exposure on the frame 74d.

After that, when the count of the counter 107 reaches the count value for one rotation of the shutter disks 32, 33, 36, 37, the driving of the stepping motor 49 is stopped as shown in FIG. At this time, the gear with slit 66 is in a state of a half rotation from the initial position, and the gear with slit 65 is in a state of rotating 1.5 times from the initial position. Further, as shown in FIG. 21, since the crank gear 59 rotates 1.5 times from the initial position, the openings 58a to 58d of the switching shield plate 58 completely expose the aperture openings 31e to 31h, and the openings 58e to 58h. Is in a state of completely blocking the aperture openings 31m to 31p.

As shown in FIG. 22, the stepping motor 50 is driven at substantially the same time as the stepping motor 49 is stopped. The motor gear 52 rotates counterclockwise, the shutter disks 34, 35 rotate clockwise, and the shutter disks 38, 39 rotate counterclockwise simultaneously via the two-stage gear 56. The drive of the stepping motor 50 is controlled so that the rotation at this time also has an exposure interval different from the exposure time. Then, the opening 58a of the switching shield plate 58-
Since 58d exposes the aperture openings 31e to 31h,
100 ms after the fourth exposure, the slit 34a of the shutter disk 34 crosses the aperture opening 31e, and the frame 75a is exposed for the fifth time.

100 ms after the fifth exposure, the slit 34a crosses the diaphragm opening 31f and crosses the frame 74b.
The sixth exposure, and 100 ms after this, the slit 33a of the shutter disk 33 crosses the aperture opening 31c and the seventh exposure is performed on the top 74c.
After ms, the slit 33a crosses the aperture opening 31d and exposes the top 74d for the eighth time.

After that, the counter disc is counted by the shutter disk 3.
When the count value for one rotation of 4, 35, 38, 39 is reached, as shown in FIG.
The drive of 0 is stopped. At this time, the gear with slit 6
No. 6 is a half-turned state from the initial position, and the slitted gear 65 is a half-turned state from the initial position. Further, as shown in FIG. 24, since the crank gear 60 rotates 1.5 times from the initial position, the openings 57e to 57h of the switching shield plate 57 completely expose the aperture openings 31i to 31l, and the openings 57a to 57d. Completely shields the aperture openings 31a to 31d.

At the same time when the stepping motor 50 is stopped, the driving of the stepping motor 49 is started again as shown in FIG. This gives 100ms from the 8th exposure
After that, the slit 36a of the shutter disk 36 is closed by the aperture opening 31.
i, and the openings 57e to 57h of the switching shield plate 57 expose the diaphragm openings 31i to 31l.
e is exposed for the ninth time.

100 ms after the ninth exposure, the slit 36a crosses the diaphragm opening 31j and the frame 74f.
10th exposure, and 100 ms later, the slit 37a of the shutter disk 37 traverses the aperture opening 31k and the eleventh exposure to the frame 74g.
After 0 ms, the slit 37a crosses the aperture opening 31l to perform the twelfth exposure on the frame 74h. After that, as shown in FIG. 26, when the shutter disks 32, 33, 36, 37 reach two rotations, the slit gear 65 makes three rotations and the slit gear 66 makes one rotation. The slits 65a and 66a of No. 1 overlap exactly at the initial position, and PI
A detection signal is obtained from the sensor 69. As a result, the driving of the stepping motor 49 is stopped.

At this time, since the crank gear 59 has rotated three times from the initial position, as shown in FIG. 27, the openings 58e to 58h of the switching shield plate 58 have aperture openings 31m to 31m.
p is completely exposed, and the openings 58a to 58d are the aperture openings 31.
e to 31h are completely shielded.

Again, the stepping motor 50 is driven substantially at the same time as the stepping motor 49 is stopped, and the openings 58e to 58h of the switching shield plate 58 are closed by the diaphragm openings 31m to 31p.
As shown in FIG. 28, the slit 3 of the shutter disk 38 is exposed 100 ms after the twelfth exposure.
8a crosses the aperture opening 31m, and the frame 75e is exposed for the 13th time.

After the 13th exposure is performed, 1
After 00 ms, the slit 38a crosses the aperture opening 31n, and the frame 75f is exposed for the 14th time.
After s, the slit 39a of the shutter disk 39 is closed by the aperture opening 3
The frame 74g is traversed 1o and the frame 74g is exposed for the 15th time, and 300 ms later, the slit 39a opens the aperture 31p.
The 16th exposure is performed on the frame 74h. afterwards,
As shown in FIG. 29, the shutter disks 34, 35, 38, 3
When 9 reaches 2 revolutions, the gear 68 with slit turns to 3
Since the rotation and the slitting gear 67 make one rotation, the slits 67a and 68a overlap each other at the initial position, and a detection signal is obtained from the PI sensor 70. As a result, the driving of the stepping motor 50 is stopped. Further, at this time, since the crank gear 60 has rotated three times from the initial position, the openings 57 a to 57 d of the switching shield plate 57.
Has completely exposed the aperture openings 31a to 31d, and returns to the initial state shown in FIG.

When the detection signals are obtained from the PI sensors 69 and 70, the CPU 100 drives the film feeding motor 87a to wind up the photographic film 86,
The number of passing slits obtained from the PI sensor 94 is counted, and when the count value for two screens is reached, the driving of the motor 87a is stopped. As a result, two new screens are set in each exposure frame 81.

In this way, when the motor 87a is loaded when the film is wound up for two screens, the motor 87a is detected and the photographic film 86 is entirely wound. The exposed and exposed photographic film 86 is stored in the cartridge 88. The case back 21 is opened, the cartridge 88 is taken out, and this is submitted to the photo lab. At the photo lab, the conventional processing is performed, and printing is performed for each screen from the developed photo film 86, and 89 ×
A print photograph with a high-definition ratio of 158 mm is produced. Then, by arranging the obtained two print photographs side by side, it is possible to observe 16 still images in which the movement of the subject has stopped at each moment.

It is to be noted that two print photographs each having eight images recorded are printed side by side to observe the continuous shot photographs. For example, 16 frames may be printed as one screen at a time. You may In this case, since the size of the print photograph is different, it is necessary to change the mask size of the photographic printer.

As described above, in the present embodiment, the switching shield for selectively switching the shielding of the upper shutter opening row and the lower shutter opening row of each shutter mechanism between the first rotation and the second rotation of the shutter disk. Two plates are slidably arranged on respective shutter mechanisms arranged side by side in the film feeding direction, and the shielding plate moving mechanism is linked to the rotation of the stepping motor provided on either one of the shutter mechanisms and the other shutter mechanism. The switching shield plate provided in the above is moved to switch the shutter opening row of the shutter mechanism between upper and lower shields.

Thus, in this embodiment, the shutter mechanism 2
Two 3 and 24 are arranged along the film feeding direction to obtain an image of 16 frames, but the present invention is not limited to this, and for example, three can be arranged to obtain an image of 24 frames. You may In this case, 12 frames may be printed as 2 screens and 1 screen may be printed, or 24 frames may be printed as 1 screen at a time. Further, in the above embodiment, the stepping motor is used as the drive source for simultaneously rotating the set of four shutter discs, but the present invention is not limited to this, and a drive means such as a spring may be used. In this case, it is preferable to use a spring spring or the like that can store the elastic energy of one photo film so that it can be taken easily so that the charging operation does not have to be performed for each release.

In the above embodiment, each shutter mechanism 23, 2
Among the four, for example, in the shutter mechanism 23, the slits 65a and 66a of the gears 65 and 66 with slits are used as signal portions, respectively, and these gears 65 and 66 are arranged coaxially so that the overlapping of the slits 65a and 66a becomes one PI. Sensor 6
However, the two PI sensors may detect that the slits 65a and 66a are at the origin position. In this case, the gears 65, 66
Does not have to be arranged coaxially. Instead of the transmissive photo sensor, a reflective photo sensor, a micro switch, or the like may be used as the sensor. In the case of a reflection type photo sensor, a reflection plate is used as a signal portion, and in the case of a micro switch, a signal portion uses a convex portion or a step.

[0065]

As described above, according to the present invention, while the shielding plate moving mechanism sequentially drives the shutter mechanism to perform the exposure by any one of the shutter mechanisms, the shutter mechanism which is not performing the exposure is operated. Since the switching shield plate is moved to switch the shield of the shutter opening row up and down,
Even if the exposure interval between the first rotation and the second rotation of the shutter disk is short, the shutter opening row can be reliably switched.

According to the second aspect of the invention, each gear is provided with a signal portion, and these gears are linked to the rotation of the stepping motor at a rotation ratio of 1: 3 with respect to two rotations of the shutter disk. Since it is rotated, it is possible to detect even a slight angle deviation of the shutter disk as compared with a case where a signal portion is simply provided on one gear and the signal portion is detected by a sensor. The shutter disc can be reliably stopped at the origin position.

[Brief description of drawings]

FIG. 1 is a perspective view showing an appearance of a continuous shooting camera.

FIG. 2 is an exploded perspective view of a shutter unit.

FIG. 3 is an exploded perspective view showing essential parts such as a photographing lens and a shutter disk.

FIG. 4 is an exploded perspective view showing essential parts such as a switching shield plate and a stepping motor.

FIG. 5 is an explanatory diagram showing an outline of a shutter unit.

FIG. 6 is an operation explanatory view showing an outline of a rotation mechanism that drives a shutter disk.

FIG. 7 is a perspective view showing a main part of a shutter mechanism.

FIG. 8 is an operation explanatory view showing the outline of a shield plate switching mechanism.

FIG. 9 is a vertical sectional view of a continuous shooting camera.

FIG. 10 is a schematic explanatory view showing a film winding mechanism of the continuous shooting camera.

FIG. 11 is a block diagram showing an outline of an electrical configuration of a continuous shooting camera.

FIG. 12 is a block diagram schematically showing a counter that counts the number of drive pulses.

FIG. 13 is a flowchart showing an outline of a shooting program.

FIG. 14 is a timing chart showing how the shutter disc rotates during exposure with respect to the pulse interval of the drive pulse supplied to the stepping motor.

FIG. 15 is a timing chart showing the state of rotation of the shutter disk when 16 frames are continuously shot with a slow continuous shooting time.

FIG. 16 is an operation explanatory view showing an initial state of the rotation mechanism and the initial position detection mechanism.

FIG. 17 is a timing chart showing the relationship between the golf swing and the exposure interval for each shooting mode.

FIG. 18 is an operation explanatory view of the shutter unit showing a state where the exposure is performed on the first frame.

FIG. 19 is an operation explanatory view of the shield plate switching mechanism in the state shown in FIG. 18.

FIG. 20 is an explanatory diagram of the operation of the shutter unit when performing exposure on the four-frame surface.

FIG. 21 is an operation explanatory view of the shield plate switching mechanism in the state shown in FIG. 20.

FIG. 22 is an operation explanatory view of the shutter unit when the exposure of the fifth frame is performed.

FIG. 23 is an operation explanatory view of the shutter unit when the exposure of the eighth frame is performed.

FIG. 24 is an operation explanatory view of the shield plate switching mechanism in the state shown in FIG. 23.

FIG. 25 is an operation explanatory view of the shutter unit when the exposure of the ninth frame is performed.

FIG. 26 is a diagram for explaining the operation of the shutter unit when the 12th frame of exposure is performed.

27 is an operation explanatory view of the shield plate switching mechanism in the state shown in FIG. 26. FIG.

FIG. 28 is a diagram for explaining the operation of the shutter unit when the 13th frame is exposed.

FIG. 29 is an operation explanatory view of the shutter unit when the exposure of the 16th frame is performed.

[Explanation of symbols]

11 continuous shooting camera 15 Shutter button 19 Continuous shooting time selection switch 22 Shutter unit 23, 24 Shutter mechanism 13 Shooting lens 32-39 Shutter disc 31 aperture 49,50 stepping motor 57, 58 Switching shield 59,60 Crank gear 65-68 Slit gear 69,70 PI sensor 74,75 screen 74a-74h, 75a-75h top

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-7-110507 (JP, A) JP-A-5-45697 (JP, A) JP-A-4-269730 (JP, A) Actual Kaihei 6- 10941 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) G03B 19/07 G03B 9/10 G03B 15/16 G03C 3/00 575

Claims (2)

(57) [Claims] 1. A shutter opening having a total of eight upper and lower two rows and a total of four left and right four rows, and a pair of shutter openings adjacent to each other on the upper side and a pair of shutter openings adjacent to each other on the lower side of the shutter opening during each two rotations. N shutter mechanisms composed of four shutter discs, each of which has an opening and a slit that opens in time series, are arranged side by side in the film feeding direction.
Each shutter mechanism is sequentially driven to sequentially rotate one set of four shutter discs one by two, and the shutter discs are vertically rotated in two stages and a total of 4 × N (N is a natural number) rows along the film feeding direction. 8x
A continuous shooting camera that sequentially guides subject light that has passed through each slit to each exposure frame arranged by N, and is arranged movably to each shutter mechanism, and includes an upper shutter opening row and a lower shutter opening row. To selectively switch the shielding of the shutter disc between the first rotation and the second rotation of the shutter disk, and the switching shield plate of the adjacent shutter mechanism is moved in conjunction with the drive of the shutter mechanism. In addition, the continuous shooting camera is provided with a shield plate moving mechanism for moving and switching the switching shield plate of the shutter mechanism driven first in cooperation with the driving of the shutter mechanism driven Nth. 2. Each of the shutter mechanisms has two gears which rotate in a rotation ratio of 1: 3 with respect to two rotations of the shutter disk in association with driving of the shutter mechanism, and an origin position of these gears. There are provided signal portions provided at corresponding positions, sensors for detecting these signal portions, and drive stopping means for stopping the drive of the shutter mechanism when the signal portions are detected by the sensor. The continuous shooting camera according to claim 1, wherein: