JPH0610941U - Shutter device for continuous shooting camera - Google Patents

Abstract

(57) [Abstract] [Purpose] To allow the arrangement and number of shooting screens to be set freely, and to secure an appropriate interval between each frame and to realize downsizing of the continuous shooting camera. [Structure] Upper and lower two frames, left and right multiple frames of shooting screen F1
Shooting optical paths A1 to A12 are arranged in two rows, upper and lower, so that the film surface is divided into F12, and one rotary shutter 1 to 12 is arranged for each shooting optical path. Gears are provided coaxially with these rotary shutters, and an annular gear train is formed by meshing these gears with each other.
The phases of the slits of the rotary shutters are set so that the photographing optical paths are opened in a desired order.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a shutter device of a continuous shooting camera used for taking a disassembled photograph and the like.

[0002]

[Prior art]

 A continuous shooting camera that continuously shoots a plurality of frames by one shooting operation has been known, and has been used to take a disassembled photograph of a sports form such as golf, baseball, or tennis. In this specification, "one-time shooting operation" refers to an operation in which a unit from the pressing of the shutter button by the photographer to the completion of continuous shooting is one unit.

This type of continuous shooting camera has a single shooting optical path, and by continuously winding up a plurality of frames of film and opening a shutter in one shooting operation, a plurality of frames can be shot. There are two types: one for shooting, and one for shooting with multiple shooting optical paths, in which these shooting optical paths are opened sequentially in order to shoot multiple frames according to the number of shooting optical paths. Existed.

The present invention belongs to the latter method of the above two types. By the way, in the latter method, as a means for sequentially opening the photographing optical path, a slit is arranged on a disc, and a rotary shutter that opens the photographing optical path by passing through the slit by rotation of the disc is adopted. It used a shutter device that placed multiple photo-taking paths at the positions where

FIG. 8 shows an example thereof, but here, the film F is divided into shooting screens F1 to F4 of two frames in each of upper, lower, left and right, and one rotary shutter 50 is rotated by its slit 50a. Each of the photographing optical paths A1 to A4 (in the drawing, the reference numerals A1 to A12 in the drawing refer to the aperture holes of each photographing optical path to be exact, but for convenience, these are referred to as photographing optical paths hereinafter). It is arranged. That is, in this case, each of the photographing screens F1 to F4 is sequentially exposed along the rotation direction of the rotary shutter by passing through the slit 50a by the rotation of the rotary shutter 50, and the rotary shutter is rotated once by one photographing operation. With such a configuration, it is possible to obtain continuous photographs of the shooting screen (here, four frames).

Further, FIG. 9 shows an example devised to further increase the number of shooting screens. Here, the film F is divided into shooting screens F1 to F8 each having eight frames in each row and slits for each of them. Two rotary shutters 51 and 52 are arranged so that the shooting optical paths A1 to A4 for the first four frames and the shooting optical paths A5 to A8 for the latter four frames are located on the rotation loci of 51a and 52a. The structure is such that they rotate in synchronization with each other. That is, in this case, the rotations of the two rotary shutters first pass through the slit 51a on the side of the rotary shutter 51 to sequentially expose the photographic screens F1 to F4 for the first four frames along the rotation direction of the rotary shutter, and then the rotary shutter. By passing through the slit 52a on the 52 side, the shooting screens F5 to F8 for the last four frames are sequentially exposed along the rotation direction of the rotary shutter, and the rotary shutter can be rotated once by one shooting operation. For example, you can get a series of photos for the shooting screen (here, 8 frames).

[0007]

[Problems to be solved by the device]

 The above-mentioned conventional technique has an advantage that it does not require a high-speed film winding means and a high-speed continuous closing means of a shutter, and is particularly useful for a low-price continuous shooting camera. However, on the other hand, it has the following problems and is not practical.

First, in the prior art, since a plurality of photographing optical paths are opened by one rotary shutter, the photographing optical paths must be arranged on the rotation locus of the slit as a matter of course. Considering the frame division of the shooting screen, there was a problem that the number and combination of shooting optical paths that can be arranged are restricted.

For example, in the case of the conventional technique shown in FIG. 8, the standard screen of a film of 35 mm size is divided into four columns in the upper and lower sides and two columns in the left and right sides to divide the frames, but the number of frames in the left and right direction is further increased. The distance between the upper and lower photographing optical paths and the distance between the left and right photographing optical paths is so large that it is virtually impossible to fit each photographing optical path on the slit rotation locus without omission. On the other hand, in the case of the conventional technique shown in FIG. 9, one rotary shutter opens the shooting optical path for four frames in each row, but as is clear from the figure, a huge rotary shutter is required compared to the shooting screen. This is not practical because it causes an increase in the size of the image, and in order to eliminate it, the exposure surface of the film must be set to the so-called panoramic size, which results in waste of frame division.

Secondly, in the prior art, although a plurality of photographing optical paths must be arranged on the rotational trajectory of the slit of the rotary shutter, the circular trajectory of the rotational optical path of the photographing optical path is divided due to the frame division. Above all, of course, there was the inconvenience that they could not be arranged at equal intervals. Therefore, when rotating at a constant speed like a rotary shutter that uses spring force as a power source, the interval between each frame becomes non-uniform and accurate disassembly photography cannot be taken.

For example, in the case of the conventional technique of FIG. 8, since the photographing screen is horizontally long, the distances between the photographing optical paths A1 and A2 and A3 and A4 and the distances between the photographing optical paths A2 and A3 and A4 and A5 are different from each other. To A2, A3 to A4, and shooting screens A1 to A2 and A3 to A4. Further, in the case of the conventional technique shown in FIG. 9, the photographing optical paths A1 to A4 and A5 to A8 are obviously deviated from the circumferential locus 1 of rotation of the slits 51a and 52a of the rotary shutters 51 and 52, and as a result, between the photographing screens. The intervals will be uneven.

Thirdly, in the prior art, the shutter speed is determined by the unit time of the photographing operation because the rotation shutter essentially corresponds to one rotation of the photographing operation for one photographing operation. There was a problem that was too late. That is, the shutter speed, which is the speed at which the slit passes through the photographing optical path, is synonymous with the rotation speed of the rotary shutter, and the time of one rotation of the rotary shutter is synonymous with the unit time of the photographing operation. In this case, it is essential to set the proper shutter speed for perfect shooting, but in reality, setting the rotary shutter rotation speed to match the proper shutter speed will shorten the unit time for shooting operation. For example, if the proper unit time is less than about 1 second, which is said to be necessary for the disassembled photograph of sports foam, then only an incomplete disassembled photograph can be obtained. Conversely, if the proper unit time is set, the shutter speed is too slow and the photograph is incomplete Only that can be obtained. Therefore, for example, a continuous shooting camera that can intermittently control the rotation of the rotary shutter by using a stepping motor as a power source, but a continuous shooting camera that can only rotate at a constant speed like a rotary shutter that uses spring force as a power source. In the case of, the sufficient performance was not obtained in practical use.

The present invention was created in view of the above-mentioned problems of the prior art, and further develops the first device that solves the above first and second problems and further develops the same. It is an object of the present invention to provide two inventions of a second invention which solves the third problem.

[0014]

[Means for Solving the Problems]

 The greatest feature of the shutter device of the present invention is that one rotary shutter is associated with one photographing optical path and the rotary shutters are arranged in an annular gear train that meshes with each other. That is, the shutter device of the first invention arranges the shooting optical paths in the upper and lower two rows so that the film surface is divided into the upper and lower two frames and the left and right plural frames, and one rotary shutter is provided for each shooting optical path. Gears are provided coaxially with these rotary shutters, and these gears are meshed with each other to form an annular gear train, while each rotary optical path is opened in a desired order. -It is configured by setting the phase of the shutter slit.

According to a second aspect of the invention, in the shutter device of the first aspect, each rotary shutter is rotated twice during one shooting operation, and the rotary shutter is divided into the first and second rotations. The configuration includes a shield plate that selectively shields the shooting optical path group in the row and the shooting optical path group in the lower row.

[0016]

[Action]

 In the first aspect of the invention, when a rotary force is applied to one rotary shutter, the other rotary shutters rotate in synchronization with it, and the phase of the slit of each rotary shutter changes with the rotation of the rotary shutter. Accordingly, the desired photographing optical path is sequentially opened.

Therefore, in the present invention, the same operation as that of sequentially opening a plurality of photographing optical paths arranged on the rotation trajectory of the slit by one rotary shutter occurs. Further, in the present invention, since one independent rotary shutter corresponds to each shooting optical path, even if the rotations of the rotary shutters are synchronized, the opening of each shooting optical path can be controlled by adjusting the slit position. The order and direction can be set freely, and the opening interval can also be set freely, which produces an effect that cannot be realized by the conventional technology. Further, in the present invention, one rotary shutter is associated with each photographing optical path and these are arranged in an annular shape, so that the film surface can theoretically be divided into any number of frames in the vertical and horizontal directions and used. Cause

Next, in the above-mentioned second invention, by rotating the rotary shutter two times, the slit passes twice with respect to the same photographing optical path. However, due to the shielding plate, the first and second rotations are performed. The upper and lower photographic optical path groups are selectively blocked and selectively blocked.

Therefore, in the present invention, for example, if the lower row of the photographing optical path group is set to be shielded at the first rotation and the upper row of the photographing optical path group is blocked at the second rotation, the upper row of the photographing optical path group is set at the first rotation. The groups are sequentially opened, and the shooting optical path group in the lower row is not opened because the imaging optical path is blocked by the shielding plate even if it passes through the slit. Even if the optical path group passes through the slit, the photographing optical path is blocked by the shielding plate and is not opened, so that double exposure does not occur despite two rotations. As a result, even if one shooting operation is set to the unit time required for an appropriate disassembled photo, the rotary shutter rotates twice, so the shutter speed is double that of the conventional technology, and an appropriate shutter speed can be secured. Produce an effect.

[0020]

【Example】

 Hereinafter, a specific embodiment of the present invention will be described with reference to the accompanying drawings. Here, the embodiment of the second invention will also serve as the description of the embodiment of the first invention.

In this embodiment, the film plane is divided into a total of 12 shooting screens of two frames vertically and six frames horizontally, and the shutter device of a continuous shooting camera uses two standard screens of 35 mm size film. FIG. 1 is an exploded perspective view of the essential parts of this embodiment. In the figure, reference numerals A1 to A12 indicate photographing optical paths, and the photographing optical paths A1 to A12 are arranged so as to divide the film F into two photographing frames F1 to F12, that is, a total of 12 frames of upper and lower two frames and left and right six frames. In the figure, reference numeral 41 indicates an objective lens group in the upper row of the photographing optical path, reference numeral 42 similarly indicates an objective lens group in the lower row of the photographing optical path, and reference numeral 40 in the figure indicates a diaphragm plate provided with aperture holes for the respective photographing optical paths. .

Rotary shutters 1 to 12 are arranged on the above-described photographing optical paths A1 to A12 for each photographing optical path. These rotary shutters 1 to 12 are provided with slits, but here, only the slits of the rotary shutters 1 and 7 are denoted by reference numerals 1a and 7a, respectively, and the other slits are omitted due to the limited drawing space. . Each of the rotary shutters 1 to 12 constitutes an annular gear train by meshing with each other. Here, the outer periphery of the rotary shutter is geared to serve as meshing means. In this embodiment, the respective slits of the rotary shutters 1 to 12 are simultaneously shuttered for the photographing optical paths A1 and A7, A2 and A8, A3 and A9, A4 and A10, A5 and A11, and A6 and A12, respectively. , And the phases are set so as to be sequentially input in the order of the set of A1 and A2 to the set of A6 and A11.

Here, each rotary shutter rotates twice during one shooting operation, and at the first rotation of the rotary shutter, the shooting optical path groups A1 to A6 in the upper row are followed by the lower rows on the two rotation planes. The photographing optical path groups A7 to A12 are selectively shielded by a shielding plate.

2 to 7 are views showing the mechanism and operation thereof. Reference numeral 30 in the figure denotes an actuating plate for applying a rotational force to each rotary shutter and moving the shield plate. The actuating plate 30 is urged by a spring (not shown) in the direction of the arrow in the drawing, and at the same time, a linear motion due to the urging force is transmitted from the rack 31 provided on the plate to the gear 16 as rotational movement. This is transmitted from the gear 16 coaxial with the gear 16 to the gear 13 coaxial with the rotary shutter 4 via the gear 14 to rotate each rotary shutter twice. Reference numeral 17 in the figure denotes a clutch for connecting to a speed control mechanism (not shown) that controls the moving speed of the working plate 30 at this time, and this clutch controls the speed when the working plate is reset. It uses a one-way clutch that is not connected to the mechanism. Further, reference numeral 35 in the drawing is a shutter lever, and in the initial state, one end 37 is engaged with the engaging concave portion 34 of the actuating plate 30 to stop the actuating plate against the biasing force. It has a function of releasing the end 36 by pressing it and starting one photographing operation.

Reference numeral 20 in the drawing indicates a shielding plate that shields the photographing optical path group. The shield plate 20 is urged by a spring (not shown) in the direction of the arrow in the drawing to move, but until each rotary shutter makes one rotation, that is, the operating plate 30 reaches half of its moving stroke. When the one end 27 of the stopper 25 is engaged with the engaging step portion 24 provided on the shield plate, it is stopped against the biasing force. Then, when the rotary shutter makes one rotation, that is, when the operating plate 30 reaches half of its moving stroke, the other end 26 of the stopper 25 is pressed by the pressing arm 33 provided on the operating plate to release the engagement. Move to the required position by the power.

Here, here, the shielding plate 20 is provided with the through-window group 21 corresponding to the upper row of the photographing optical path groups A1 to A6 and the through window group 22 corresponding to the lower row of the photographing optical path groups A7 to A12. Are arranged in a staggered manner. That is, until each rotary shutter makes one rotation, the upper row of the photographing optical path groups A1 to A6 is opened by the through window group 21 and the lower row of the photographing optical path groups A7 to A12 is blocked (see FIGS. 2 and 3). (State), after the rotary shutter makes one rotation, the photographing optical path groups A7 to A12 in the lower row are opened by the through window group 22 and the photographing optical path groups A1 to A6 in the upper row are shielded (see FIGS. 4 and 5). State). Note that reference numerals 32 and 23 in the figure indicate a pressing arm and a passive arm for pushing the shield plate 20 back to the initial position when the operating plate 30 is reset.

The operation of the first rotation of the rotary shutter is shown in the table below.

[Table 1] Shooting optical path A1 A2 A3 A4 A5 A6 Shielding by shield plate Open Open Open Open Open Open Open Open Shutter insertion order 1 → 2 → 3 → 4 → 5 → 6 → Shooting screen F1 F2 F3 F4 F5 F6 Result Exposure → Exposure → Exposure → Exposure → Exposure → Exposure → ──────────────────────────────── Photography optical path A7 A8 A9 A10 A11 A12 Shielding by shielding plate Closed Closed Closed Closed Closed Closed Shutter insertion order 1 → 2 → 3 → 4 → 5 → 6 → Photo screen F7 F8 F9 F10 F11 F12 Result Unexposed Unexposed Unexposed Unexposed unexposed unexposed

The operation of the second rotation of the rotary shutter is shown in the table below.

[Table 2] Photographic optical path A1 A2 A3 A4 A5 A6 Shielding by a shielding plate Closed Closed Closed Closed Closed Closed Shutter insertion order 1 → 2 → 3 → 4 → 5 → 6 → Shooting screen F1 F2 F3 F4 F5 F6 Result Exposed Exposed Exposed Exposed Exposed Exposed ──────────────────────────────── Photographic optical path A7 A8 A9 A10 A11 A12 Shielding by shield plate Open Open Open Open Open Open Open Shutter insertion order 1 → 2 → 3 → 4 → 5 → 6 → Photographing screen F7 F8 F9 F10 F11 F12 Result exposure → exposure → exposure → Exposure → Exposure → Exposure →

In the above embodiment, the shutter is turned on by the photographer so that the last frame is automatically photographed. However, the photographer can appropriately rotate the rotary shutter during one photographing operation. Needless to say, a mechanism for interrupting continuous shooting by suspending the shooting may be provided to enable single-frame shooting.

[0030]

[Effect of device]

 The present invention having the above configuration has the following unique effects. Since one independent rotary shutter corresponds to each shooting optical path, the opening order and direction of each shooting optical path can be set freely by adjusting the slit position, and the opening interval can also be set freely. However, it is possible to realize an accurate disassembled photograph with uniform intervals which were not uniform in the prior art.

Since one rotary shutter is associated with each photographing optical path and these are arranged in a ring shape, there is an effect that the film surface can be theoretically divided and used without limitation to the number of frames in the vertical and horizontal directions. As well as realizing a high-resolution photo, there is no waste in dividing the film surface into frames.

For the same reason, the degree of freedom in layout is increased, the shutter section can be made small in design, and the entire camera can be made compact.

For the same reason, the size of the rotary shutter is much smaller than that of the prior art, so that the start-up characteristic of the shutter operation is improved, and it is not continuous shooting but one frame by the user as described in the embodiment. It is also possible to shoot continuously.

Since the rotary shutters form an annular gear train by meshing with each other, the backlash of a specific gear does not increase, and the rotary shutters rotate accurately in synchronization and disassemble accurately. A photograph can be realized.

Since the rotary shutter rotates twice, the shutter speed is doubled as compared with the conventional technology, and an appropriate shutter speed can be secured, and there is no problem even if the spring force is used as the power source instead of the motor, and an extremely inexpensive continuous shooting camera. Is realized.

[Submission date] August 16, 1993

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

[0014]

[Means for Solving the Problems]

 First, the shutter device of the first invention has a plurality of photographing optical paths and sequentially opens the photographing optical paths by one photographing operation to perform photographing of a plurality of frames according to the number of photographing optical paths. In this continuous shooting camera, the shooting optical paths are arranged in two rows so that the film surface is divided into two vertical shooting frames and multiple left and right shooting screens, and one rotary shutter is provided for each shooting optical path. However, a gear is provided coaxially with these rotary shutters, and the gears are meshed with each other to form an annular gear train.On the other hand, the slits of the rotary shutters are opened so that each photographing optical path is opened in a desired order. It consists of a set phase.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0015

[Correction method] Change

[Correction content]

Further, the shutter device of the second invention has a plurality of photographing optical paths, and these photographing optical paths are sequentially opened by one photographing operation to photograph a plurality of frames according to the number of photographing optical paths. In the continuous shooting camera of the method that performs the above, the shooting optical paths are arranged in two rows, upper and lower, so that the film surface is divided into the upper and lower two frames and the left and right plural frames, and the respective shooting optical paths are arranged in the desired order. A rotary shutter is arranged in the shooting optical path group of each row so that it is opened, and each rotary shutter that should rotate in conjunction is rotated two times during one shooting operation, and the first and second rotations of the rotary shutter. It is composed of a shielding plate that selectively blocks the upper row of photographing optical path groups and the lower row of photographing optical path groups by selectively allocating to the eyes.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0034

[Correction method] Change

[Correction content]

Since the rotary shutters form an annular gear train by meshing with each other, the backlash of a specific gear does not increase, and the rotary shutters rotate accurately in synchronization and disassemble accurately. A photograph can be realized (the above are the effects peculiar to the first invention).

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction content]

Since the rotary shutter rotates twice, the shutter speed is doubled as compared with the conventional technology, and an appropriate shutter speed can be secured, and there is no problem even if the spring force is used as the power source instead of the motor, and an extremely inexpensive continuous shooting camera. Is achieved (the above are the effects unique to the second device).

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a main part of a continuous shooting camera in which a shutter device of the present invention is implemented.

FIG. 2 is a plan view of the main part showing the part other than the rotary shutter part with an imaginary line.

FIG. 3 is a plan view of a main part of the same, with a rotary shutter part omitted.

FIG. 4 is a plan view of the main part showing the part other than the rotary shutter part with an imaginary line.

FIG. 5 is a plan view of the main part with the rotary shutter omitted.

FIG. 6 is a plan view of the main part of the same.

FIG. 7 is a rear view of the main part of the same.

FIG. 8 is a plan view of a main part of a continuous shooting camera in which a conventional shutter device is implemented.

FIG. 9 is a plan view of a main part of a continuous shooting camera in which a conventional shutter device is implemented.

[Explanation of symbols]

 1-12 Rotary shutter 1a Slit 7a Slit 20 Shielding plate A1-A12 Shooting optical path F1-F12 Shooting screen

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[Procedure amendment]

[Submission date] August 16, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 5

[Correction method] Change

[Correction content]

Claims (5)

[Scope of utility model registration request] 1. A continuous shooting camera having a plurality of shooting optical paths, wherein the shooting optical paths are sequentially opened by one shooting operation to shoot a plurality of frames according to the number of shooting optical paths. The shooting optical paths are arranged in the upper and lower two rows so that the film surface is divided into a shooting screen of two frames and a plurality of left and right frames, and one rotary shutter is provided for each shooting optical path, and these rotary shutters are coaxial with each other. Is characterized in that the gears are provided in and the gear trains are formed by meshing these gears with each other, and the phases of the slits of the rotary shutters are set so that the respective photographing optical paths are opened in a desired order. Shutter device for continuous shooting camera. 2. The shutter device for a continuous shooting camera according to claim 1, wherein the film surface is divided into a total of 12 frames, that is, two frames vertically and six frames horizontally. 3. The shutter device for a continuous shooting camera according to claim 1, wherein the gear and the rotary shutter are coaxial with each other by forming the outer periphery of the rotary shutter in a gear shape. 4. The shutter device for a continuous shooting camera according to claim 1, further comprising a mechanism for appropriately stopping rotation of the rotary shutter by a photographer during one photographing operation. 5. Each rotary shutter is rotated twice during one shooting operation, and
4. A shutter device for a continuous shooting camera according to claim 1, further comprising a shield plate that selectively shields the upper row of the photographing optical path group and the lower row of the photographing optical path group according to the second rotation and the second rotation. .