JPH04162027A - Shutter device for continuous photographing - Google Patents

Abstract

PURPOSE:To provide a shutter device for successive photograph embodied in a simple structure, with which adjustment of exposure time for each picture and the spacing of successive photos can be made easily, by furnishing a plurality of exposure apertures arranged on a straight line in the film feeding direction, installing corresponding shutter blades arranged in positions as closing these apertures, and opening them one after another in sequence from the end. CONSTITUTION:Eight photographing lenses 3a-3h are arranged on a level in front of a camera body, and a shutter base board 7 is provided with eight exposure apertures 6a-6h corresponding to the lenses 3a-3h. Shafts 8a-8h are implanted straight in this base board 7, to bear shutter blades 9a-9h rotatably. A threaded rod 15 is installed in parallel with the straight line tying the apertures 6a-6h and is engaged by a moving member 16. When a stepping motor 20 is driven to rotate this threaded rod 15, the moving member 16 advances and retreats. With movement of this member 16, a shutter driving bar 24 rotates the shutter blades 9a-9h one after another to open and close the apertures.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a shutter device for continuous shooting that sequentially exposes light at short time intervals through a single release operation.

[Prior art] If a moving subject is photographed sequentially with a time lag, it is possible to obtain a photographic image in which the movement stops at each photographing moment. It can be observed as an image, which is very convenient.

This kind of continuous shooting function is achieved with motor-driven cameras by taking a picture each time the film is wound one frame at a time at high speed, but this is limited to about four frames per second, and there is a delay between winding the film and taking pictures. The drawback is that a mechanism for synchronizing is required, making the structure complex and increasing costs. Furthermore, since several frames are taken in one continuous shooting, the amount of film consumed increases, and there is also the problem that it becomes impossible to take many quick shots with one film.

Based on this foreground, a continuous shooting camera was proposed that sequentially takes pictures through multiple exposure apertures with a single release operation, as seen in Japanese Patent Publication No. 41-13352 and Japanese Patent Application Laid-Open No. 2-105132. has been done. In the camera described in the former publication, each of a plurality of exposure apertures is provided with a shutter blade and a spring device for driving the shutter blade, and the charged shutter blades are sequentially released to take pictures. In addition, the camera described in the latter publication has four exposure apertures through which the respective snapshot screens are arranged in a ``tag'' shape, and all it takes is one rotation of a single rotary shutter plate. Now, a four-frame continuous shot screen that is time-shifted is taken.

[Problem to be solved by the invention]

However, in the case where a shutter blade and a spring device are provided for each of a plurality of exposure apertures, each shutter blade is driven by its own spring device, so the structure is complicated and it is difficult to downsize. There is a problem in that it is difficult to match the drive characteristics of the blades, and variations tend to occur in the exposure time and the interval between continuous shots. In addition, with a system that rotates a single shirt plate and shoots multiple continuous shots at positions equidistant from the center of rotation, it is difficult to increase the number of quick shots taken in one continuous shot. In addition to this, it also has the disadvantage that the chronological order of the continuous shots is difficult to discern because the printed photos are arranged in a J-shape.

[Purpose of the invention]

The present invention has been made to solve the above-mentioned drawbacks of the prior art, and its purpose is to take pictures by arranging a plurality of continuous shooting screens in a line along the film feeding direction.
Moreover, it is an object of the present invention to provide a quick-shooting shank device that has a simple structure, can be easily miniaturized, and can easily adjust the exposure time of each continuous shooting screen and the continuous shooting interval.

[Failure to solve the problem]

The shutter device of the present invention includes a plurality of exposure apertures arranged in a straight line along the film feeding direction, and a shutter provided for each of these exposure apertures and biased to a position that closes the exposure aperture. A blade, a rod-shaped screw member provided in the direction in which the exposure apertures are arranged, a drive system that rotates the screw member, and a drive system that is screwed onto the screw member so as to be moved forward and backward as the screw member rotates, and is integrated with the screw member. and a shutter drive member that sequentially engages and moves each of the shutter blades when moving in the direction, and sequentially opens each of the exposure apertures from the end.

[Operation] When the shank release operation is performed, the screw member is rotated by the drive system. As a result, the shutter drive member screwed into the screw member starts to move and is sequentially engaged starting with the shutter blade at the end. The shutter blade is moved against the bias, and the exposure aperture that was closed by the shutter blade is opened. As the shutter driving member continues to move, the shutter blades are released from the shutter driving member and return to their original positions, and the exposure aperture is closed. Then, the shutter drive member engages with the next shutter blade to rotate it,
The shutter blade opens and closes the previously closed exposure aperture. Thereafter, the shutter blades are sequentially driven by the shutter drive member in the same manner, and snapshots are taken.

Hereinafter, the present invention will be explained in detail based on the illustrated embodiments.

(Example) In FIG. 2 showing the appearance of a continuous shooting camera using the present invention, eight photographic lenses 38 to 3 are mounted on the front of the camera body 2.
h are arranged horizontally and attached, and the optical axes of each lens are parallel. The photographic lenses 3a to 3d are formed by one lens plate 4 made of transparent resin such as acrylic.
The photographic lenses 3e to 3h are integrally molded to the other lens plate 5.

Inside the camera body 2 are eight exposure apertures 68 to 6 corresponding to the photographic lenses 3a to 3h, as shown in FIG.
A shutter substrate 7 having a shape h formed thereon is fixed. The inner diameters of these exposure openings 6a to 6h are all equal. In the shutter substrate 7, shafts 8a to 8h are installed in a straight line above the straight line connecting the centers of the exposure apertures 6a to 6h, and each rotatably supports shutter blades 9a to 9h as shown in the figure. ing.

Each of the protruding tips 10a to 1 of the shutter blades 9a to 9h
．． Springs lla to llh that bias the shank blades 9a to 9h counterclockwise are applied to Oh, and stoppers 12a to 1.2h embedded in the shutter board 7 force the shutter blades 9a to 9h in the counterclockwise direction. The range of rotation is restricted. Then, each shutter blade 9a to 9h is
When in the position where they are in contact with the flanges 12a-12h, the exposure openings 6a-6h are closed by the shutter blades 19a-9h, as shown in FIGS. 1 and 3. Also, on the left side of each of the shutter blades 9a to 9h, stoppers 13a to 13h that restrict the clockwise rotation range of the shank blades 93 to 9h are implanted in the shutter base plate 7. In addition, the tips 10a to 10 of the shutter blades 9a to 9h
Claw portions 14a to 14h are formed at the tip opposite to h.

On the other hand, the threaded rod 1 is parallel to the straight line connecting the exposure apertures 6a to 6h.
5 is provided, and a box-shaped moving member 16 is provided thereto.
are screwed together. A helical gear 17 is fixed to the end of the threaded rod 15, and a drive gear 21 of a stepping motor 20 meshes with the helical gear 17 via a helical gear 718 and a small gear 19. The moving member 16 has a protrusion 16 in a direction parallel to the threaded rod 15.
a is formed, and this protrusion 16a is loosely fitted into the guide groove 22a of the partition plate 22. Therefore, when the stepping motor 20 is driven and the threaded rod 15 is rotated, the moving member 16 is moved back and forth along the guide groove 22a.

As shown in FIG. 4, the moving member 16 has the claw portion 14.
The shutter drive bar 24 that engages with holes a to 14h is connected to the hole 16b.
It is rotatably mounted in the vertical direction in the figure around a shaft 25 provided inside.

The rotation range of the shutter drive bar 24 is restricted by the upper and lower ends of the hole 16b, and is urged downward by a spring 26. Also, the helical gear 1 of the shutter drive bar 24
The lower side opposite to 7 is formed into a tapered shape.

Therefore, when the moving member 16 is moved in the direction of the arrow A in FIGS. 1 and 3, the shutter drive bar 24 sequentially engages with the claws 14a to 14h of the shutter blades 19a to 9h, and Rotate 9h clockwise. When the movable member 16 moves in the direction of arrow B, the shutter drive bar 24 is rotated upward while the tapered portion of the shutter drive bar 24 rides on the backs of the claws 14a to 14h, and the shutter drive bar 24 is rotated upwards to the claws. The moving member 16 is returned to the initial position without being caught by the members 14a to 14h.

As shown in FIG. 5, the bar provided on the camera body 2]
- Eight exposure frames 31a to 31h, each separated by a partition wall, are formed between the Rohnay loading chamber 27 and the winding chamber 28 along the feeding direction of the film 29. Exposure frame 31
The horizontal lengths from a to the exposure frame 31d and from the exposure frame 31e to the exposure frame 31h are each the same horizontal length as one frame of a 35 mm full-size screen.

The vertical length of each of the exposure frames 31a to 31h is approximately half that of a 35 mm full-size screen, and each exposure frame 31a to 31h is provided at a position where the longitudinal center portion of the film 29 is exposed. Therefore, when shooting through such exposure frames 31a to 31h, as shown in FIG. Photography screens 34a to 34d, 34e to 3
4h will be exposed.

In addition, the horizontally long screen that connects each 4-frame continuous shooting screen 34a to 34d or 34e to 34h has a width of 6 mm on the top and bottom sides of the screen for one full-size frame.
The screen size for panoramic prints obtained when photographing is done by blocking the width (for example, 13.7 ± 0.4 mm x 3
6mm). And as shown in Figure 5,
The continuous shooting screen 34d and the continuous shooting screen 3 are separated by the central partition wall 35.
A space is opened between 4e and 4e. Furthermore, the horizontal sizes of the four continuous shooting screens 34a, 34d, 34e, and 34h are as follows.
The shape of the exposure frame is determined so that it is longer than the other continuous shooting screens 34b, 34c, 34f, and 34g.

The film 29 is attached to a spool 3 provided in a winding chamber 28.
6 is wound up by rotating counterclockwise, and is pulled out from the cartridge 37 loaded in the cartridge loading chamber 27. A film winding motor 38 is built into the spool 36, and its driving force is transmitted to a film feeding mechanism 40 via a gear 39. The film feeding mechanism 40 receives a driving force from a gear 39, drives the spool 36 through a gear 41 when winding the film, and drives a rewinding fork 43 through a gear 42 when rewinding the film.

Sprocket 4 is attached to film perforation 29a.
5 is engaged and rotated as the film 29 is fed. A signal plate 46 having radially formed through-hole slits is integrally connected to the sprocket 45, and by monitoring the rotation of the signal plate 460 with a photosensor 47, the sprocket 4
A rotation amount of 5 is detected. When the film is wound up, the signal plate 46 and photosensor 47 control the film 2.
The drive of the motor 38 is stopped at the time when it is detected that the feeding amount of the frame 9 has reached two 35 mm full-size frames.

The operation of the snapshot camera with the above configuration will be explained.

After loading the film 29, when the shutter button 50 is pressed once, the stepping motor 20 starts driving.
Drive gear 21. Small gear 19. Hasha Gear 18. The threaded rod 15 is rotated via the threaded gear 17. As a result, the moving member 16 starts moving in the direction of arrow A, and the shutter drive bar 24 engages with the claw portion 14a of the shutter blade 9a. As the movement of the moving member 16 progresses, the shutter drive bar 2
4 pushes the claw part 14a in the direction of arrow A, and the shutter blade 9a
is rotated clockwise to open the exposure aperture 6a. When the movable member 16 is further moved, the shutter drive bar 24 is removed from the claw portion 14a, so the shutter blade 9a is moved by the spring l.
The stopper 12a rotates counterclockwise due to the bias of the stopper 12a.
The exposure aperture 6a is closed.

In this way, as the movement of the moving member 16 progresses, the shutter drive bar 24 sequentially engages with each of the claw portions 14b to 14h, and similarly to the shutter blade 9a, the shutter drive bar 24 engages with each of the claw portions 14b to 14h.
b to 9h are rotated to sequentially open and close the exposure apertures 6b to 6h from the ends.

As a result, the film 29 has the quick-shot screens 34a to 34.
h are sequentially exposed.

Note that if the moving speed of the moving member 16 is kept constant, if there is a risk that the shutter speed when photographing each frame of the continuous shooting screen will become longer, the frequency of the drive pulse supplied to the stepping motor 20 may be varied. The shutter blades 9a to 9h may be rotated at high speed at the moment of exposure. For example, in consideration of the fact that the motion speed of the subject generally slows down at the beginning and end of the motion, the exposure aperture 6a
.

It is also possible to change the drive control of the stepping motor 20 so that the exposure interval between the openings 6b and the exposure interval between the exposure openings 6g and 6h are delayed.

Immediately after the last exposure aperture 6h is opened and closed, the rotational direction of the stepping motor 20 is switched, the threaded rod 15 is rotated in the opposite direction, and the moving member 16 begins to move in the direction of arrow B. As a result, the tapered portion of the shutter drive bar 24 is moved to the claw portion 1.
The shutter blade 9h tries to rotate counterclockwise by contacting the back of the shank blade 4h, but the shank blade 9h does not touch the stopper 1.
Since rotation in the counterclockwise direction is prevented by 2h,
The shutter drive bar 24 is rotated and retracted upward against the bias of the spring 26 due to the reaction force received from the back of the claw portion 14h. Therefore, the shutter drive bar 24 is attached to the claw portion 14h.
The moving member 16 continues to move without getting caught. Similarly, as the movable member 16 moves, the shutter drive bar 24 climbs over from the claw portion 14g to the claw portion 14a, and when the movable member 16 returns to the initial position, the stepping motor 20 is stopped. The snapshot of the episode is completed.

In this way, 8 frames of continuous shooting images 34a to 34 are printed on the film 29.
When the photographing step h is performed, upon receiving the photographing completion signal, the film feeding mechanism 40 is activated, the motor 38 is driven, and the feeding of the film 29 is started.

And signal board 37. When the photosensor 38 detects feeding of two 35mm full size frames, the motor 38
The camera stops and enters standby mode for the next shooting.

In addition, as already explained, the 4-frame continuous shooting screen 34
A to 34d are the same screen size for panoramic printing. Therefore, by performing the conventional panoramic print processing, the continuous shot screens 34a to 34d are printed in the size of two service prints, and the prints of the individual continuous shot screens 34a to 34d are also printed in a sufficient size.

Currently, the panoramic print service is performed in units of one frame on a 35mm full-size screen, so as shown in Fig. 6, continuous print photos 52 and 53 of four frames are printed from the continuous shooting screens 34a to 34h. can get. Therefore, if you connect the two print photos 52 and 53, it will become a continuous photo taken in one quick shot, and each frame will be lined up horizontally over time, making it very easy to reproduce the continuous shooting scene. It's advantageous.

Although the embodiment described above uses eight shutter blades, the present invention is not limited to this number, and the number of shutter blades can be increased or decreased to increase the number of frames of the quick-shot screen to one frame of a 35 mm full-size screen. For example, it can be set to 3 frames or 5 frames.

[Effects of the Invention] As described above, according to the shank device of the present invention, a plurality of exposure apertures are arranged in a straight line along the film feeding direction, and the exposure aperture is closed for each of these exposure apertures. A shutter blade is provided which is biased to a position where the shutter blade is activated. A rod-shaped screw member that is rotated by the drive system is provided in the direction in which the exposure apertures are arranged, and a shutter drive member that sequentially engages and moves each of the shutter blades is screwed onto this screw member. In addition to simplifying and compacting the structure, by changing the rotation speed of the screw member, the rotation speed of each shutter blade, that is, the shutter speed, can be easily adjusted. You can easily set the time interval between. Further, it is possible to photograph consecutive shots arranged in a row, and it is possible to reproduce a quick-shot scene in which temporal continuity is easily recognized.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of the main parts of a continuous shooting camera using the present invention. FIG. 2 is an external view of a snapshot camera using the present invention. FIG. 3 is a schematic view of main parts showing the relationship between the shutter drive nozzle and each shutter blade and the rotating state of the shutter blade according to the embodiment of the present invention. FIG. 4 is a sectional view of a main part of a driving member according to an embodiment of the present invention. FIG. 5 is a sectional view of essential parts of the quick-shooting camera shown in FIG. 2. FIG. 6 is an explanatory diagram showing an example of a printed photograph obtained by a snapshot camera using the present invention. 6a to 6h...Exposure openings 9a to 9h...Shutter blades 11a to 11h, 26...Springs 1.2a to 12h, 13a to 13h-Stoppers 14a to 14h...Claw portions 15... ... Threaded rod 16 ... Moving member 20 ... Stepping motor 24 ...
...Shutter drive bar. Vertical, eight ≧ −ノ, eight

Claims (1)

[Claims] (1) A plurality of exposure apertures arranged in a straight line along the film feeding direction, a shutter blade provided for each of these exposure apertures and biased to a position where the exposure aperture is closed; A rod-shaped screw member provided in the direction in which the exposure apertures are arranged, a drive system that rotates this screw member, and a drive system that is screwed onto the screw member so that it moves forward and backward as the screw member rotates, and moves in one direction. 1. A shutter device for continuous shooting, comprising a shutter drive member that sequentially engages and moves each of the shutter blades to sequentially open each of the exposure apertures from one end to the other.