JP3442452B2 - Device for switching the number of shots in a four-lens 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 device for switching the number of shots in a four-lens camera capable of simultaneously shooting four frames used for taking a certificate photograph.

[0002]

2. Description of the Related Art A four-lens camera capable of simultaneously photographing four frames has been conventionally used for taking a certificate photograph. Such a four-lens camera is provided with a number-of-images switching device for performing partial shooting such as one-frame shooting and two-frame shooting in addition to four-frame simultaneous shooting.

Conventionally, in order to shield / open four exposure openings, for example, as disclosed in Japanese Patent Laid-Open No. 62-9330, there is a first sector capable of shielding two exposure openings. The number of images to be photographed is switched using the second sector that can shield either one of the remaining two exposure openings. Further, as disclosed in Japanese Patent Laid-Open No. 3-150545, in addition to the through holes corresponding to the four exposure openings, a plate for one frame having a through hole for photographing one frame and the through holes are symmetrical. There is also one in which the number of images to be photographed is switched by using a two-piece plate having a pair of arc-shaped elongated holes.

[0004]

As described above, since the conventional number-of-images switching device uses a plurality of sectors or plates, the structure is complicated and the operation control of each sector or plate is difficult. It was Further, since the number of parts is large, the number of assembling steps is increased and the cost is increased.

Therefore, the present applicant has filed Japanese Patent Application No. 5-276.
In No. 529, in the above four-lens camera,
We have proposed a device for switching the number of shots, which has a reduced number of parts, has a simple structure, improves the operation accuracy, and is inexpensive. The contents are a photographing number switching device in a four-lens camera which has four exposure openings that can be opened and closed by shutters and can switch the number of photographing images to four frames, two frames and one frame by operating a photographing number switching member. Forcibly driving pins are provided on the driving member that is rotated by 90 °, and one of the four light-exposure openings adjacent to the two light-shielding members that engages through the forcibly driving elongated hole. A first opening capable of simultaneously opening the exposure openings and second and third openings capable of respectively opening one exposure opening are provided, and the light shielding member follows the rotation of the driving member via a spring. In addition to rotating the light-blocking member, the light-shielding member is pressed against the urging force of the spring by the restricting member in response to the switching operation of the number-of-images switching member.
This is a configuration in which the frame photographing position and the one frame photographing position are locked.

However, in the above-described shooting number switching device, it is necessary to take a blank shot after switching the number of shooting images. It should be noted that such aerial photography is also necessary in other known examples.

[0007] Then, when switching the normal number of shots, 1
It is enough to take a single shot (90 ° rotation of the drive member), but (a)
4 frame shooting → 1 frame shooting → 4 frame shooting, (b) 4 frame shooting → 2 frame shooting → 4 frame shooting, such as unlocking at the 4 frame shooting position, 4 frame shooting again without taking a blank shot In the case of returning to No. 1, it was not possible to return to the normal shooting state as shown in FIGS. This is because the driving member rotates 90 degrees in one aerial shot,
This is because the two 4-frame shooting upright portions 6 and 6 provided on the light shielding member 1 are separated by 180 °.

Here, FIG. 12 shows an example of a problem in which the four-frame shooting state is canceled and one blank shot is taken.
As shown in (a), the lower two exposure openings 19 and 19 are located at the left and right ends of the first opening 3 of the light shielding member 1 and are opened, and the upper two exposure openings 19 and 19 are the second opening. As shown in FIG. 12B, from the four-frame shooting state in which the four-frame shooting is performed by opening the four frames and the third opening 5, respectively, as shown in FIG. From regulation pin 1
When the locking by 3, 13 is released and the drive member 14 is rotated 90 ° counterclockwise by one shot,
As shown in (c), the upper right exposure opening 19 is located on the upper end side of the first opening 3 and opened, and the lower left exposure opening 19 is located on the third opening 5 and opened. A two-frame image capturing state in which the two exposure openings 19 and 19 are shielded will result.

Further, FIG. 13 shows an example of a problem in which the four-frame shooting state is canceled and the image is shot once once in the same manner as in FIG. 12, and in the case where the vertical relationship is opposite to that in the case of FIG. 12 (a). FIG.
As shown in (a), the upper two exposure openings 19 and 19 are located at the left and right ends of the first opening 3 of the light shielding member 1 and are opened, and the lower two exposure openings 19 and 19 are the second opening. As shown in FIG. 13B, from the four-frame shooting state in which the four-frame shooting is performed by opening the four frames and the third opening 5, respectively, as shown in FIG. From regulation pin 1
When the locking by 3, 13 is released and the driving member 14 is rotated 90 ° counterclockwise by one shot,
As shown in (c), the lower left exposure opening 19 is located at the lower end side of the first opening 3 and opened, while the upper right exposure opening 19 is located at the third opening 5 and opened. A two-frame image capturing state in which the two exposure openings 19 and 19 are shielded will result.

From the above, from the above (a) and (b)
In such a case, the photographer can remember and take the aerial shot twice, but the operation is troublesome because the aerial shot must be taken twice only in a specific case. It was Also, if you forget to take two aerial shots, you will get a shooting mistake.

The object of the present invention is therefore to
In the eye camera, when switching from the other shooting state to the four-frame shooting state, the driving member is rotated 180 ° in one shot to eliminate the troublesome operation and prevent shooting mistakes. Another object is to provide a device for switching the number of shots.

[0012]

In order to solve the above problems, the invention according to claim 1 can be opened and closed by a shutter.
One exposure opening, a number-of-images switching member capable of switching the number of images to be shot for four frames, two frames, and one frame, and four-frame shooting positions for the four exposure openings in accordance with the switching operation of the number of shots switching member. Shooting with a four-lens camera that has a light-blocking member that rotates in each of the frame shooting position and the one-frame shooting position, and a drive member that rotationally drives this light-blocking member, and performs a single idle shooting operation when the number of shots is switched. When the number-of-images switching device is switched from the other photographing state to the one-frame photographing state or the two-frame photographing state, the driving member is moved 90 times by one idle photographing operation.
It is characterized in that it is provided with a drive device for rotating the drive member by 180 ° in one idle shooting operation when the shooting operation is performed by rotating the same by four degrees and switching from another shooting state to the four-frame shooting state.

The invention according to claim 2 is based on claim 1.
In the invention described above, the rotation operation amount of the drive member is switched by switching a switch interlocking with a switching operation of the image number switching member and switching a switch interlocking with a cam interlocking with the rotating operation of the light shielding member. It is characterized in that the driving device is configured so as to be performed by the operation.

[0014]

According to the first aspect of the present invention, particularly when the photographing mode is switched to the four-frame photographing mode, the four-frame photographing position, the two-frame photographing position, and the one-frame photographing are performed with respect to the four exposure apertures by a single idle photographing operation. The drive member that rotates the light-shielding member that rotates in each of the shooting positions is rotated 180 ° by the drive device (normal aerial photography 2
Since it is equivalent to the number of shots, four frames can be shot with one aerial shot.

That is, when switching to the one-frame shooting mode or the two-frame shooting mode, the driving member is rotated 90 ° in the same manner as in the normal operation in one idle shooting operation, and the necessary one-frame shooting position or two-frame shooting is performed. The light-blocking member can be rotated to the position, and when switching to the four-frame shooting mode, the light-blocking member can be rotated to the required four-frame shooting position by rotating the drive member 180 ° with only one idle shooting operation. As a result, even if the number of shots is changed, it is possible to take a single blank shot.

According to the second aspect of the invention, the switching of the rotational movement amount (90 ° / 180 °) of the driving member by such a driving device is switched in conjunction with the switching operation of the number-of-photographs switching member. Since a switch that operates, a cam that interlocks with the rotation operation of the light shielding member, and a switch that performs switching operation by this cam are additionally provided, the rotation operation amount can be switched by a relatively simple change of the drive circuit.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the number-of-shots switching device in a four-lens camera according to the present invention will be described below with reference to FIGS.

First, FIG. 1 shows a light shielding member 1 which constitutes a device for switching the number of shots in a four-lens camera to which the present invention is applied. The light shielding member 1 includes a shaft hole 2, a first opening 3 and a second opening 3. 4, the third opening 5, and the uprights 6 and 6 for shooting four frames,
It is a single disc-shaped member having two-frame shooting projections 7, 7, 7, 7, one-frame shooting upright portions 8, 8, 8, 8, an elongated hole 9 for forced drive, and a pin 10. .

It should be noted that, except for the structure relating to the switching of the number of frames to be photographed, such as the drive mechanism of the drive member 14 for rotating the light shielding member 1, it is disclosed in JP-A-62-9330 or JP-A-63-234230 (shutter). The same configuration as above) shall be used. In addition, in FIG. 2, in order to clarify the positional relationship, the 4-frame shooting upright portion 6, the 2-frame shooting protruding portion 7, and the 1-frame shooting upright portion 8 are shown together at the same position.

As shown in FIG. 1, the light shielding member 1 has a circular arc-shaped first opening 3 and both ends of the first opening 3 on a concentric circle of a disk having a shaft hole 2 at the center. A second opening 4 and a third opening 5 corresponding to the diametrical direction are formed.
As shown in FIGS. 3 to 5, the first openings 3 are four exposure openings 19, 19, 1 in the upper, lower, left, and right directions in the camera body (not shown).
Two adjacent exposure openings 19 and 19 of 9 and 19 can be simultaneously opened at both ends. The second opening 4 and the third opening 5 have one exposure opening 19 at one end side. It is possible to open by having.

Here, as shown in FIG. 5, the left and right exposure openings 19 and 19 are located at a position forming a central angle of 75.2 ° with each other (a central angle of 37.degree. With respect to a vertical line passing through a central axis (not shown)). 6 ° position) and the upper and lower exposure openings 19, 19
Are located at a central angle of 104.8 °.

Around the light-shielding member 1, two four-frame shooting uprights 6 and 6 are formed by lowering the light-shielding member 1 toward one side of the disc, and two of the four places are formed on the same plane as the disc. The projections 7, 7, 7, 7 for frame photography and the vertical bending parts 8, 8, 8, 8 for 1 frame photography at four locations by standing up to the other side of the disc are diagonal lines of each other. Formed on. That is, FIG.
As shown in FIG.
It is in a position that makes a degree. In addition, as shown in FIG. 4, the two-frame shooting projections 7, 7, 7, 7 are provided with four-frame shooting uprights 6, 6.
With respect to the central angle of 70.44 °. Further, as shown in FIG. 5, the vertical bending portions 8, 8 for one frame photography,
8 and 8 have a central angle of 3 with respect to the upright portions 6 and 6 for photographing four frames.
They are located at 7.6 °.

As shown in FIG. 2, the above-described 4-frame shooting upright portion 6, 2-frame shooting projection 7, and 1-frame shooting upright portion 8 are members corresponding to setting pins (hereinafter referred to as setting members). It is possible to abut with the restriction pin 13 that is a restriction member provided on the reference numeral 11). That is, the setting member 11 moves forward and backward by engaging a stepped portion with a photographing number switching member (not shown), and the recess 12 is located at a position offset from the rotation axis 11a.
Is formed, and the regulation pin 13 is integrally provided at the tip thereof.

Any one of the four-frame photographing upright portion 6, the two-frame photography protruding portion 7, and the one-frame photography upright portion 8 is engaged with the restriction pin 13, and the concave portion 12 is 2A, as shown in FIG. 2A, at most two of the upright bending portion 6 for photographing four frames and the projection portion 7 for photographing two frames can pass through. Then, as shown in FIGS. 3 to 5, a spring (not shown) is provided to urge the restriction pin 13 to a position along the vertical direction.

Further, in FIG.
An arcuate forcible drive elongated hole 9 centered on the shaft hole 2 is formed closer to the shaft hole 2 than the second opening 4. As shown in FIGS. 3 to 5, a forced drive pin 16 provided in the drive member 14 is engaged with the forced drive slot 9.

That is, the driving member 14 rotates about a central axis passing through the shaft hole 2, and four connecting pins 15, 15, 15, 15 are provided on one surface thereof at equal intervals of 90 °. A forced drive pin 16 is provided on the other surface. The drive member 14 is rotated by 90 ° by one linking pin 15 by a link mechanism driven by a motor (not shown) and a drive mechanism (drive device) such as a feed claw.

Further, the light shielding member 1 is provided with a pin 10 on the right side of the shaft hole 2 in FIG. This pin 10
As shown in FIGS. 3 to 5, one end of a spring 18 is hooked, and the other end of the spring 18 is hooked on a pin 17 provided on the driving member 14. The spring 18 is composed of a tension coil spring, and the light shielding member 1 rotates via the spring 18 following the rotation of the driving member 14. That is, the light shielding member 1 is biased counterclockwise as shown by the arrow in FIGS.

According to the four-lens camera having the photographing number switching device having the above-described structure, for example, when the switching knob is operated to rotate the photographing number switching member, the setting member 11 is moved back and forth, as shown in FIG. As shown, the upright portions 6 and 8 or the protruding portions 7 that come into contact with the regulation pin 13 are switched. FIG. 2A shows a one-frame shooting state in which the regulation pin 13 is in contact with the one-frame shooting upright portion 8. In FIG. 2B, the regulation pin 13 is in contact with the two-frame shooting projection 7. 2C shows a two-frame shooting state, and FIG. 2C shows a four-frame shooting state in which the four-frame shooting upright portion 6 contacts the restriction pin 13.

Next, the case of four-frame photography shown in FIG. 3 will be described.

At the time of this four-frame shooting, the four-frame shooting upright portions 6 and 6 are brought into contact with the upper and lower regulating pins 13 and 13, respectively, and the light-shielding member 1 is locked in that position.
As shown in (a), the upper two exposure openings 19 and 19 are located at the left and right ends of the first opening 3 and opened, and
The lower two exposure openings 19, 19 are the second opening 4 and the third
Are opened at the respective openings 5.

Therefore, the four exposure openings 19, 19, 1
All of 9 and 19 are in the open state, and in this state, a shutter (not shown) is released, so that four frames are simultaneously shot.
At this time, the forcible drive pin 16 is at the end position of the forcible drive elongate hole 9, and the next planned movement position of the forcible drive pin 16 is shown by a virtual line (common to FIGS. 3 to 5).

When the photographing is completed, for example, the feed claw pushes up one connecting pin 15 by driving the motor to rotate the driving member 14 by 90 ° counterclockwise. By pushing the end portion of the forcible drive long hole 9, the locking of the regulation pins 13, 13 and the upright bending portions 6, 6 for four-frame photography is released. That is, the regulation pin 13 is pushed by the upright portion 6 and is rotated about the axis 11a against the biasing force of a spring (not shown).

Then, the light-shielding member 1 is rotated counterclockwise by 180 ° by the urging force of the spring 18, and as shown in FIG. 3 (b), as shown in FIG.
The upright portions 6 and 6 for photographing four frames, which are opposite to each other, come into contact with each other, and the light shielding member 1 is locked at that position. Therefore, for the next film, the lower two exposure openings 19 and 19 are located at the left and right ends of the first opening 3 and are opened.
The upper two exposure openings 19, 19 are the second opening 4 and the third
Are opened at the respective openings 5.

Then, after the four frames have been photographed, when the drive member 14 rotates counterclockwise by 90 ° in the same manner as described above, as shown in FIG. 3 (c), the forced drive pin 16 causes the forced drive elongated hole 9 to move. Since it only rotates to the position immediately before pushing the end portion of, the restriction pins 13 and 13 are kept as they are. Therefore, as shown in FIG. 3B, for the next film, the lower two exposure openings 19 and 19 are located at the left and right ends of the first opening 3 and are opened, and the upper two exposure openings 1 and 19 are opened.
9 and 19 are located in the second opening 4 and the third opening 5, respectively, and are kept open.

Further, after the four frames have been photographed, when the driving member 14 rotates counterclockwise by 90 ° in the same manner as described above, the forcible driving pin 16 pushes the end of the forcibly driving slot 9 and the regulating pins 13, 13 are formed. And the upright portions 6 and 6 for photographing four frames are released, and the light shielding member 1 is rotated 180 ° counterclockwise by the urging force of the spring 18 to be in the state shown in FIG. 3 (d). That is, as in the case shown in FIG. 3A, the upright restraining pins 13 and 13 are brought into contact with the upright bending portions 6 and 6 for photographing four frames, which are opposite to those shown in FIG. 1 is locked in that position.

Thus, for the next film, the upper two exposure openings 19 and 19 are again positioned at the left and right ends of the first opening 3 and opened, and the lower two exposure openings 19 and 19 are opened to the second opening.
Are positioned in the openings 4 and the third openings 5, respectively, and are opened.

Then, after the four frames have been photographed, when the driving member 14 rotates counterclockwise by 90 ° in the same manner as described above, the forced driving pin 16 is forced into the forced driving elongated hole as shown in FIG. 3 (a) again. Since only the position just before pushing the end portion of 9 is rotated, the restriction pins 13 and 13 are kept as they are. Therefore, hereinafter, the same four-frame simultaneous photographing operation as described above is repeated.

Next, the case of two-frame photography shown in FIG. 4 will be described.

During the two-frame shooting, the two-frame shooting projections 7 and 7 are brought into contact with the upper and lower regulating pins 13 and 13, respectively, and the light shielding member 1 is locked at that position.
As shown in (a), the upper left exposure opening 19 is located at the upper end side of the first opening 3 and opened, and the lower right exposure opening 19 is located at the second opening 4 and opened. The other two exposure openings are blocked by the light blocking member 1. Therefore,
Only the two exposure openings 19 and 19 located on the diagonal line are in an open state, and in this state, a shutter (not shown) is released, so that two frames are simultaneously photographed.

After photographing the two frames, the driving member 14 rotates 90 ° counterclockwise in the same manner as described above, and the forced driving pin 16
Presses the end of the forcible drive slot 9 to bring the regulating pins 13, 1
When the locking of the projections 7 and 7 for photographing the 3 and 2 frames is released respectively, the light shielding member 1 is rotated 39.11 ° counterclockwise by the urging force of the spring 18, and as shown in FIG. The next two-frame photographing projections 7, 7 come into contact with the upper and lower restriction pins 13, 13 and the light blocking member 1 is locked at that position. Therefore, this time, the 2
The exposure opening at one position, that is, the lower left exposure opening 19 is located at the lower end side of the first opening 3 and is opened, and the upper right exposure opening 19 is located at the third opening 5.

After the two frames have been photographed, the drive member 14 rotates counterclockwise by 90 ° in the same manner as described above, and the forced drive pin 16 pushes the end portion of the forced drive elongated hole 9 so that the regulation pins 13, 13 are formed. When the locking of the two-frame shooting projections 7 and 7 is released, the light-blocking member 1 rotates 140.89 ° counterclockwise due to the urging force of the spring 18, and as shown in FIG. The following two-frame image-capturing projections 7, 7 (upside-down from the case of FIG. 4A) come into contact with the restriction pins 13, and the light-shielding member 1 is locked in that position. Therefore, for the next film, the lower right exposure opening 19 is located at the lower end side of the first opening 3 and is opened, and the upper left exposure opening 19 is located at the second opening 4. Will be released.

Further, after the two frames have been photographed, the drive member 14 rotates counterclockwise by 90 ° in the same manner as described above, and the forced drive pin 16 pushes the end portion of the forced drive elongated hole 9 so that the regulation pins 13, 13 are formed. When the locking of the two-frame shooting projections 7, 7 is released, the light blocking member 1 is rotated counterclockwise by 39.11 ° by the urging force of the spring 18, and as shown in FIG. The next two-frame shooting projections 7, 7 (upside-down from the case of FIG. 4B) come into contact with the restriction pins 13, 13 and the light-shielding member 1 is locked at that position. Therefore, this time, the two unexposed exposure apertures that were in the blocking state before,
That is, the upper right exposure opening 19 is located on the upper end side of the first opening 3 and is opened, and the lower left exposure opening 19 is the third opening.
It is located at the opening 5 and is opened.

After the two frames have been photographed, the drive member 14 rotates counterclockwise by 90 ° in the same manner as described above, and the forced drive pin 16 pushes the end portion of the forced drive elongated hole 9 so that the regulation pin 1 is released.
When the locking of the projections 3, 7 and the projections 7, 7 for two-frame photography is released, the light blocking member 1 is rotated by 140.89 ° counterclockwise due to the urging force of the spring 18, and again shown in FIG. As described above, the next two-frame shooting projections 7, 7 are brought into contact with the upper and lower restriction pins 13, 13 to lock the light shielding member 1 in that position. That is, for the next film, the upper left exposure opening 19 is located at the upper end side of the first opening 3 and opened.
The lower right exposure opening 19 is located and opened in the second opening 4. Therefore, hereinafter, the same operation as described above for each two-frame shooting is repeated.

Next, the case of single frame photography shown in FIG. 5 will be described.

During this one-frame shooting, the one-frame shooting upright portions 8 and 8 are respectively brought into contact with the upper and lower regulating pins 13 and 13, and the light shielding member 1 is locked at that position, for example, as shown in FIG.
As shown in (a), only the upper left exposure opening 19 is located at the center of the first opening 3 and opened, and the other three exposure openings are shielded by the light shielding member 1. Therefore, only one exposure opening 19 is opened, and in this state, the shutter (not shown) is released, so that one frame is photographed.

After photographing one frame, the drive member 14 rotates counterclockwise by 90 ° in the same manner as described above, and the forced drive pin 16 is moved.
Presses the end of the forcible drive slot 9 to bring the regulating pins 13, 1
When the locks of the vertical bending portions 8 and 8 for photographing 3 and 1 frame are respectively released, the light shielding member 1 is rotated counterclockwise by 104.8 ° by the urging force of the spring 18, and as shown in FIG. The next one-frame shooting upright portions 8 and 8 come into contact with the upper and lower regulation pins 13 and 13, and the light shielding member 1 is locked at that position. Therefore, this time, the 3
Of the exposure openings at the three positions, only the lower left exposure opening 19 is located at the center of the first opening 3 and is opened.
The light-shielding member 1 shields three exposure openings including one.

After the one frame is photographed, the driving member 14 rotates counterclockwise by 90 ° in the same manner as described above, and the forcible driving pin 16 pushes the end portion of the forcibly driving elongated hole 9 so that the regulating pins 13, 13 are formed. When the locking of the vertical bending portions 8 and 8 for one frame photography is released, the light shielding member 1 is rotated 75.2 ° counterclockwise by the urging force of the spring 18, as shown in FIG. 5 (c). The next one-frame shooting upright portions 8 and 8 (upside down from the case of FIG. 5A) come into contact with the upper and lower regulating pins 13 and 13, and the light shielding member 1 is locked at that position. It Therefore, this time, only the lower right exposure opening 19 of the two unexposed exposure openings that were previously in the shielded state is located at the center of the first opening 3 and is opened, and the already-exposed 2 The light-shielding member 1 shields three exposure openings including one.

Further, after the one frame is photographed, the drive member 14 rotates counterclockwise by 90 ° in the same manner as described above, and the forced drive pin 16 pushes the end portion of the forced drive elongated hole 9 so that the regulation pins 13, 13 are formed. When the locking of the vertical bending portions 8 and 8 for one frame is released, the light shielding member 1 is rotated counterclockwise by 104.8 ° by the urging force of the spring 18, and as shown in FIG. The next one-frame shooting upright portions 8 and 8 (upside down from the case of FIG. 5B) come into contact with the upper and lower regulating pins 13 and 13, and the light shielding member 1 is locked at that position. It Therefore, this time, only the exposure aperture 19 on the upper right, which is the last uncaptured image that was previously in the shielded state, is located in the central portion of the first aperture 3 and is opened, and the three exposures that have already been captured are exposed. The opening is blocked by the light blocking member 1.

In addition, after photographing one frame, the drive member 14 rotates counterclockwise by 90 ° in the same manner as described above, and the forced drive pin 16 pushes the end portion of the forced drive elongated hole 9 so that the regulating pin 1 is rotated.
3 and 13 and the upright portions 8 and 8 for one-frame photography are released, the light shielding member 1 is rotated counterclockwise by 75.2 ° by the urging force of the spring 18, and again shown in FIG. 5 (a). As shown, the next one-frame shooting upright portions 8 and 8 come into contact with the upper and lower regulating pins 13 and 13, and the light shielding member 1 is locked at that position. That is, for the next film, only the upper left exposure opening 19 is located at the center of the first opening 3 and is opened.
The other three exposure openings are blocked by the light blocking member 1.
Therefore, in the following, the same operation as described above for each frame is repeated.

As described above, only one light shielding member 1 is required, and the number of frames to be photographed can be switched by changing the locking position of this one light shielding member 1. Therefore,
Compared with the conventional structure, the structure is simpler, and moreover, the light shielding member 1 is locked at a specific position, so that the accuracy is also improved. Also,
As the number of parts is small, the assembly man-hours are simplified,
It is also cheap in terms of cost.

In the four-lens camera equipped with the above-described number-of-photographs switching device, it is necessary to perform a single idling operation when the number of photos is switched. Here, 1 from other shooting conditions
When switching to the frame shooting mode or the two frame shooting mode,
The drive member 14 is rotated 90 degrees in one aerial shot, and the light-shielding member 1 is provided with four projection portions 7, 7, 7, 7 for two-frame photography and a vertical bending portion 8, 8, 8, for one-frame photography. Since each 8 is provided, there is no problem because the required number of shooting positions can be obtained.

However, as described in the above-mentioned [Problems to be Solved by the Invention], 4 from other photographing states.
When switching to the frame shooting state, when the driving member 14 is rotated by 90 ° by one time of idle shooting, the number of 2
Since the vertical bending portions 6 and 6 for photographing four frames are 180 ° apart, the position for photographing four frames cannot be set. For this reason, the drive member 14 is moved to 90
It was necessary to rotate the driving member 14 by a total of 180 ° by rotating the same by 180 °, that is, by taking two aerial shots.

Therefore, in the present invention, the drive member 14 is normally rotated by 90 ° in one shot, but when the other shooting state is switched to the four-frame shooting state, the drive member is driven by one shot. Rotate 14 by 180 °. That is, as described above, for example, the drive circuit of the motor that drives the feed claw that pushes up the connecting pin 15 of the drive member 14 and the link mechanism is configured as shown in FIG.

As shown in FIG. 6, the drive circuit of the motor 20 for rotationally driving the drive member 14 has a power source Vcc,
A motor drive transistor Q1, voltage dividing resistors R1 and R2, and a motor start switch SRSW
4-frame shooting selector switch 4FSW, normal switch MS
It is equipped with a switch for shooting four frames, W1 and M1SW. The operation of this motor drive circuit will be described below.

During normal one-frame or two-frame simultaneous shooting,
The normal / 4-frame shooting changeover switch 4FSW is connected to the normal position (see the solid line in FIG. 6). When the exposure operation is completed by a release operation (not shown), the motor start switch SRSW is turned on and the motor 20 is turned on. As a result, shutter charging is performed, but at the same time, the light blocking member 1 is rotated to the next photographing position via the driving member 14.

In the normal state, the rotation amount of the driving member 14 for feeding the light shielding member 1 is 90 °. The motor start switch SRSW is driven by a cam (not shown) that interlocks with the light-shielding member 1.
Is turned off during the rotation of the light shielding member 1 as shown in FIG.
However, since the normal switch MSW is previously turned on by another cam (not shown) which is also interlocked with the light shielding member 1, the motor 20 maintains the on state. Thus
When the drive member 14 rotates 90 ° and the light blocking member 1 rotates by a predetermined angle, the normal switch MSW is turned off by the cam.
Then, the motor 20 stops.

When shooting four frames at the same time, normal / 4
The frame shooting changeover switch 4FSW is connected to the position of four frames (see the dotted line in FIG. 6). As in the normal state described above, when the exposure operation is completed by a release operation (not shown), the motor start switch SRSW is turned on and the motor 20 is turned on. As a result, shutter charging is performed, but at the same time, the light blocking member 1 is rotated to the next photographing position via the driving member 14.

In the 4-frame shooting state, the rotation amount of the driving member 14 for feeding the light shielding member 1 is 180 °. As in the normal state described above, the motor start switch SRSW is driven by a cam (not shown) that is interlocked with the light shielding member 1 as shown in FIG.
Although it is turned off during the rotation of the light blocking member 1, the four-frame shooting switch M1SW is turned on before that by another cam (not shown) that is also interlocked with the light blocking member 1, so that the motor 20 maintains the on state. Thus, the drive member 14
When the shading member 1 rotates by a predetermined angle and rotates by a predetermined angle, the four-frame shooting switch M1SW is turned off by the cam and the motor 20 is stopped.

Next, as described in (a) and (b) above, in order to change from the four-frame shooting to the one-frame shooting or the two-frame shooting, the lock at the four-frame shooting position is released, and the blank shooting is not performed again. A case where the shooting is returned to the four-frame shooting will be described.

As shown in FIG. 9A, the lower two exposure openings 19 and 19 are located at the left and right ends of the first opening 3 and are opened, and the upper two exposure openings 19 and 19 are the second opening. As shown in FIG. 9B, from the four-frame shooting state in which the four frames and the third opening 5 are located and opened, respectively, as shown in FIG.
After releasing the locking of the uprights 6 and 6 for shooting 4 frames by 3
Return to 4-frame shooting again.

Then, by the motor drive circuit,
In a single idle shooting operation, the driving member 14 rotates counterclockwise 180 ° by the cam and the four-frame shooting switch M1SW, and the forced driving pin 16 pushes the end portion of the forced driving elongated hole 9 to shield the light-shielding member 1. Rotate counterclockwise and use pin 1
The light-shielding member 1 is moved to 180 by the biasing force of the spring 18 between 7 and 10.
After being rotated by a degree, the state shown in FIG.

That is, as shown in FIG. 9 (c), the upper and lower restriction pins 13, 13 are opposite to those shown in FIG. 9 (a).
The vertical image bending portions 6 and 6 come into contact with each other, and the light shielding member 1 is locked at that position. Thus, the top two exposure openings 19, 1
9 are located at the left and right ends of the first opening 3 and are opened.
One exposure opening 19, 19 is located at the second opening 4 and the third opening 5, respectively, so that a four-frame shooting state is obtained.

Further, FIG. 10 shows a case where the vertical relationship is reverse to that of FIG. 9, and as shown in FIG. 10A, the upper two exposure openings 19 and 19 are located at the left and right ends of the first opening 3. And the lower two exposure openings 19 and 19 are respectively located and opened in the second opening 4 and the third opening 5.
As shown in FIG. 10B, from the frame shooting state, the locking of the four frame shooting vertical bending portions 6 and 6 by the restriction pins 13 is released, and then the four frame shooting is resumed.

Then, similarly to the above, by the motor drive circuit, the driving member 14 is rotated 180 ° counterclockwise by the cam and the four-frame shooting switch M1SW by one shot operation, and the forced drive pin is driven. 16 pushes the end of the oblong hole 9 for forced drive to rotate the light blocking member 1 counterclockwise, and the biasing of the spring 18 between the pins 17 and 10 causes the light blocking member 1 to rotate 180 °, and FIG. The state shown in c) is obtained.

That is, as shown in FIG. 10C, the up-and-down regulating pins 13 and 13 are brought into contact with the upright bending portions 6 and 6 for photographing four frames, which are opposite to those shown in FIG. The light blocking member 1 is locked in that position. Thus, the bottom two exposure apertures 1
Four frame photography in which 9 and 19 are opened at the left and right ends of the first opening 3 and the upper two exposure openings 19 and 19 are respectively opened in the second opening 4 and the third opening 5. The state is obtained.

Next, the case of switching from one-frame shooting to four-frame shooting will be described.

As shown in FIG. 11A, only the upper left exposure opening 19 is located at the center of the first opening 3 and is opened, and the other three exposure openings are shielded by the light shielding member 1. As shown in FIG. 10B, from the one-frame shooting state, the locking of the one-frame shooting upright portions 8, 8 by the restriction pins 13, 13 is released, and then the four-frame shooting is resumed.

In this case, in the conventional case, the driving member 14 rotates counterclockwise by 90 ° by one idling operation, and the spring 18 between the pins 17 and 10 urges the light-shielding member 1 to move. As shown in FIG. 11 (c), the four-frame shooting vertical bending portions 6 and 6 are brought into contact with the upper and lower regulating pins 13 and 13 by rotating by a predetermined angle, and the light shielding member 1 is locked at that position. . Thus
The lower two exposure openings 19 and 19 are located at the left and right ends of the first opening 3 and opened, and the upper two exposure openings 19 and 19 are located at the second opening 4 and the third opening 5, respectively and opened. It will be in the state of four frames that have been played.

However, according to the present invention, as described above,
By the motor drive circuit, the driving member 14 is rotated counterclockwise by 180 ° by the cam and the four-frame shooting switch M1SW by one idle shooting operation, and the forcible drive pin 16 of the forcible drive slot 9 is formed. The light blocking member 1 is rotated counterclockwise by pushing the end portion, and the light blocking member 1 is rotated 180 ° by the biasing force of the spring 18 between the pins 17 and 10.
The state shown in FIG.

That is, as shown in FIG. 11 (d), the up-and-down regulating pins 13 and 13 are brought into contact with the upright bending portions 6 and 6 for four-frame photography, which are opposite to those shown in FIG. 11 (c). The light blocking member 1 is locked in that position. Thus, the top two exposure apertures 1
Four frame photography in which 9 and 19 are opened at the left and right ends of the first opening 3, and the lower two exposure openings 19 and 19 are respectively opened in the second opening 4 and the third opening 5. The state is obtained.

As described above, according to the four-lens camera equipped with the photographing number switching device of the present invention, when the photographing state is switched from the other photographing state to the four-frame photographing state, the driving member 1 can be photographed once.
No matter which shooting state is switched by rotating 4 by 180 °, only one idle shooting operation is required. Therefore, it is possible to eliminate the troublesomeness of the operation, which has been a problem in the past, and it is possible to prevent a photographing error. In addition, a switch (normal / 4 frame shooting switching switch 4FSW) that operates in conjunction with the switching operation of the number-of-images switching member, a cam that interlocks with the rotation operation of the light-shielding member 1, and a switch that operates by this cam (normal) A relatively simple change of the drive circuit with the addition of the switch MSW and the switch for shooting four frames M1SW) allows the rotation amount (90 ° / 180 °) of the drive member 14 by the drive device to be appropriately switched.

In the above embodiment, except for the configuration relating to the switching of the number of frames to be photographed, Japanese Patent Laid-Open No. 9330/1987.
However, the present invention is not limited to this, and other configurations may be used. Further, only one of the restriction pins (members) may be provided. Further, the configuration of the camera body to be applied is arbitrary, and in addition, specific detailed structures including the central angles of the openings, the upright portions, and the protrusions can of course be appropriately changed.

[0073]

As described above, according to the number-of-images switching device in the four-lens camera according to the invention described in claim 1, when the other image capturing state is switched to the four-frame image capturing state, one idle shot is performed. Since the drive member is rotated by 180 °, only one idle shooting operation is required no matter what kind of shooting state switching is performed. Therefore, it is possible to eliminate the troublesome operation and to prevent shooting mistakes. Can be prevented.

According to the second aspect of the present invention, the switch that operates in conjunction with the switching operation of the number-of-images switching member, the cam that interlocks with the rotation operation of the light blocking member, and the switch that operates by this cam. The rotational movement amount (90 ° / 180 °) of the drive member by the drive device can be appropriately switched by a relatively simple modification of the drive circuit with the addition of.

[Brief description of drawings]

FIG. 1 is a front view showing a light-shielding member that constitutes a device for switching the number of shots in a four-lens camera to which the present invention is applied.

2A and 2B show a locking relationship between a light shielding member to which the present invention is applied and setting and regulating members. FIG. 2A is an explanatory view of a one-frame shooting state, and FIG. 2B is a two-frame shooting state. Explanatory drawing, (c)
Is an explanatory diagram of a four-frame shooting state.

FIG. 3 is a diagram showing a relationship between a light-shielding member to which the present invention is applied, a driving member, an exposure aperture, and the like in a four-frame shooting state,
(A) is a front view of a first locked state, (b) is a front view of a second locked state, (c) is a front view of a third locked state,
(D) is a front view of the fourth locked state.

4A and 4B also show a relationship in a two-frame shooting state, in which FIG. 4A is a front view of a first locked state, FIG. 4B is a front view of a second locked state, and FIG. Front view of the locked state of
(D) is a front view of the fourth locked state.

FIG. 5 is a view showing the relationship in the one-frame shooting state, where (a) is a front view of the first locking state (first frame),
(B) is a front view of a second locked state (second frame), (c) is a front view of a third locked state (third frame), (d) is a fourth locked state (4) It is a front view of (piece).

FIG. 6 is a motor drive circuit diagram to which the present invention is applied.

FIG. 7 is a timing chart showing a feed amount of a light shielding member by driving a motor at a normal time.

FIG. 8 is a timing chart showing a feed amount of a light shielding member by driving a motor when photographing four frames.

9A and 9B illustrate an example of a state in which a four-frame shooting state is canceled and one aerial shooting is performed according to the present invention. FIG. 9A is a front view of the four-frame shooting state, and FIG. 9B is a view from the four-frame shooting state. FIG. 6C is a front view when the lock is released, and FIG. 7C is a front view after the lock is released and one shot is taken.

FIG. 10 illustrates an example of a state in which a four-frame shooting state is canceled and a single blank shooting is performed in the same manner as in FIG. 9, and FIG. 10A shows a case where the vertical relationship is reverse to that of FIG. 9A. 4B is a front view of the four-frame shooting state, FIG. 8B is a front view of the four-frame shooting state when the lock is released, and FIG.

FIG. 11 illustrates an example of switching from a one-frame shooting state to a four-frame shooting state. FIG. 11A is a front view of the one-frame shooting state.
(B) is a front view of the one-frame shooting state when the lock is released,
(C) Unlock the lock and take a normal single shot (90 ° rotation)
A front view after that, and (d) is a front view after unlocking is performed and one time aerial photographing (rotation by 180 °) according to the present invention.

FIG. 12 is a view showing an example of a problem in which a four-frame shooting state is canceled and one aerial shot is taken. (A) is a front view of the four-frame shooting state, and (b) is a relationship from the four-frame shooting state. FIG. 7C is a front view when the lock is released, and FIG.

FIG. 13 is a diagram showing an example of a defect in which a four-frame shooting state is canceled and one aerial shot is taken as in FIG. 12, and FIG.
2A is a front view of a four-frame shooting state in which the vertical relationship is reversed, FIG. 2B is a front view of the four-frame shooting state when unlocked, and FIG. It is a front view after one aerial photography.

[Explanation of symbols]

1 Light-shielding member 2 shaft holes 3 First opening 4 Second opening 5 Third opening 6 4 pieces Shooting stand 7 Two-frame shooting projection 8 1 piece Standing part for shooting 9 Forced drive slot 10 Light-shielding member side pin 11 Setting member 13 Control pin 14 Drive member 15 connecting pin 16 Forced drive pin 17 Drive member side pin 18 spring 19 exposure aperture 20 motor

─────────────────────────────────────────────────── --Continued from the front page (56) Reference JP-A-3-35231 (JP, A) JP-A-3-150545 (JP, A) JP-A-2-291541 (JP, A) JP-A-62-1 9330 (JP, A) JP 52-11031 (JP, A) Actual development 52-71523 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) G03B 19/07

Claims (2)

(57) [Claims] 1. A four-exposure opening which can be opened and closed by a shutter, a number-of-photographs switching member which can be switched between four frames, two frames, and one frame, and the four numbers corresponding to the switching operation of the number-of-photographs switching member. Four frame shooting positions for one exposure opening,
A four-lens camera that has a light-shielding member that rotates in two-frame shooting position and one-frame shooting position and a driving member that rotationally drives the light-shielding member, and performs a single idle shooting operation when the number of shots is switched. In the device for switching the number of shots, when the other shooting state is switched to the one-frame shooting state or the two-frame shooting state, the driving member is rotated 90 ° in one idle shooting operation, and the other shooting state is changed. A switching device for the number of shots in a four-lens camera, comprising a drive device for rotating the drive member 180 ° in one idle shooting operation when switched to a four-frame shooting state. 2. In the drive device, the rotation operation amount of the drive member is switched by a switch operation associated with a switching operation of the image number switching member and a cam associated with a rotation operation of the light shielding member. 2. The apparatus for switching the number of shots in a four-eye camera according to claim 1, wherein the switching operation is performed by a switch that operates.