JPH02197831A - Motor drive camera - Google Patents

Abstract

PURPOSE:To stabilize shutter accuracy and to reduce the blurring of a camera by stopping a motor after a phase to stop the motor is detected, and delaying the start of a shutter opening operation so that the operation starts simultaneously with that the motor is completely stopped. CONSTITUTION:The motor drive camera is provided with a phase detecting means SW9, a control means 604, and delay devices INV6, R3, and C3; the phase detecting means SW9 detects that movement of a group of mechanisms which operate during the time from a release preparation condition to the beginning of shutter opening has reached the specified phase, and generates a signal; the control means 604 starts an electric driving means 600 in receiving a signal from a release means SW6, and stops the means 600 in receiving a signal from the phase detecting means SW9; and the delay devices INV6, R3, and C3 open/close the shutter after the elapse of prescribed time after receiving a signal from the phase detecting means SW9. The motor drive camera is constituted in such a way that the shutter is opened/closed after the elapse of the prescribed time after stopping the electric driving means 600.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a motor drive camera driven by a motor that is an internal mechanism of the camera.

In recent years, there has been a trend in motor drive cameras to use direct motor drive not only for film winding, but also for mirror drive, aperture drive, shutter charging, and the like. This is superior to direct drive systems or indirect drive systems in which a spring is charged once using an electric motor and the spring's power is used to drive various types of drives, as it is more efficient and has a simpler structure. This is because

[Conventional technology]

Conventional cameras of this type have a drive source that covers the sequence from when the release switch is pressed until the shutter opens, such as controlling the aperture and retracting the mirror out of the photographing optical path, which are necessary operations before the shutter opens. In order to prevent one screen from being eclipsed or the exposure level to become unstable due to bounce of the mirror or aperture control mechanism when the sequence ends, the phase signal is changed slightly before the end of the sequence. This is conveyed to the motor control circuit so that the motor can be stopped as soon as possible.

(Problem to be solved by the invention) However, if the previous phase signal is issued too early, for example when the battery is slightly depleted, the motor may stop before the necessary operation is completed at 1 o'clock. Sometimes it happens. Therefore, it is necessary to generate a phase signal by setting a phase that ensures reliable operation.
It takes a certain amount of time for the motor to stop, so for example, an electric brake is applied. However, if the shutter is opened or closed while the camera is subject to vibrations caused by the rotation of the motor or rotational moment caused by the electric brake, etc.

The locking mechanism and magnet that control shutter operation became unstable, causing variations in shutter accuracy and camera shake.

The present invention aims to eliminate these problems.

[Means to solve the problem]

In order to solve the above problems, a motor drive camera according to the present invention is provided.

A release means (SW6) that generates a release signal, and a shutter (11) that opens and closes to expose the film.
5,115').

A mechanism group (80° 132) that operates between the release preparation state and the shutter opening start state, and an electric drive means (aOO) that drives the mechanism group.

a phase detection means (SW9) that detects that the interlocking of the mechanism group has reached a specific phase and generates a signal; and a phase detection means (SW9) that starts the electric drive means upon receiving a signal from the release means; control means (604) for stopping the electric drive means in response to a signal from the controller;

After receiving the signal from the phase detection means, a delay device (INV6.R
3, C3), and after the electric drive means has stopped,
The shutter is configured to open and close after a predetermined period of time has elapsed.

(Function) With the above configuration, in the present invention, the motor is stopped after detecting the phase at which the motor should be stopped, and the deceleration operation of the motor is substantially completed and the motor is not rotating at all or has completely stopped. The start of the shutter opening operation can be delayed so that the shutter opening operation starts at the same time that the shutter opens.

〔Example〕

FIG. 1 shows an embodiment of the present invention, and shows a camera drive mechanism section.

The details of each part will be explained below in accordance with the sequence of photographic preparation operations.

First, in order to load the film 28, when the key locking the back cover is removed by a known means, the back cover can be opened and a portion of the back cover moves to the lower left in Figure 1. do.

Then, the back cover interlocking lever 3 is moved to the shaft 4 by the biasing force of the spring 2.
It rotates to the left around , following part 1 of the camera back. As a result, the rewind release lever 5 fixed below the shaft 4 also rotates to the left to hold the rewind and push one end 6a of the bar 6. Therefore, this lever 6 rotates to the right, the rewinding state is released, and the relationship between the rewinding holding lever 6 and the rewinding button 1, which had been in the raised position, becomes the state shown in FIG. 1. The rewind state and how to cancel it will be described later.

Also, by turning the rewind release lever 5 to the left, its tip 5a is released from contact with the back cover opening/closing switches 5w12 and Sw17.
The switch S w 12 is turned off and the switch 5W17 is turned on.

Therefore, even while the camera back is open, the motor 600 can be rotated to operate the test spool 29 and sprocket 49, but this operation will be described later.

A pin 3a is installed at the other end of the back cover interlocking lever 3, and as the pin 3a rotates to the left, one arm 9m of the winding limit lever 90, which rotates around the shaft 8 as the lever 9 rotates to the left, is pressed to rotate this lever 9 to the right. .

A hoisting limit switch S w 5 is disposed behind this arm portion 9a, and is turned on when the hoisting limiting lever 9 is turned to the right. This switch SW5 is connected to a motor control circuit (Fig. 13), which will be described later, and the circuit is connected to the switch SW5.
When w5 is ON, the circuit configuration is such that the motor 600 rotates in the opposite direction to the arrow in the figure, that is, rotates to the right when the full-press switch Sw6 located at the top in FIG. 1 is turned ON. Furthermore, when the hoisting limiter lever 9 is rotated to the right, the hook 9b at the tip of another arm moves to the left in FIG. 12
It becomes possible to rotate.

When the back cover interlocking lever 3 is rotated to the left, the number counter locking pawl 13 is still closed.
rotates to the right. That is, the pin 13C implanted at one end of the locking pawl 13 is pushed to the left in the figure by the interlocking lever 3 rotating to the left, and the locking pawl 13 moves against the biasing force of the spring 16 to the shaft 15. It is rotated to the right by the rotation of the body. As a result, the locking portion 13JL of the counter and locking pawl 13 is retracted to the left in the figure from the position where it is engaged with the counter ratchet wheel 17 fixed to the lower end of the shaft 18.

Then, the ratchet wheel 17 is fixed to the shaft 18,
This axis 18. The air-feeding cam 19 and the number board 20 which are fixed to the holder are integrally rotated to the left by the biasing force of the spring 21. This rotation ends when the pin 22 installed below the number plate 2G comes into contact with a stop plate 23 provided on a substrate (not shown). At this time, the letter S on the sheet count board 20 directly faces the index 24, indicating that the sheet count has been reset.

It should be noted that another feed pawl 25 can be secured to the sheet counter ratchet wheel 17, but its tip 25a is moved forward left in the figure by the tip 13b of the sheet counter locking pawl 13 that rotates to the right. As a result of being pushed, the feed pawl 25 is rotated counterclockwise by the rotation of the shaft 27 against the biasing force of the spring 26, and its pawl portion 25b is retracted from the locking position with the sheet counting ratchet wheel 17. Therefore, this feed pawl 25 does not hinder left rotation of the ratchet wheel 17. This is what happens when you open the back cover. When the back cover is opened, the film is loaded, but during this time the motor 6
00 does not rotate.

Next, the operation from loading the film until the preparation for photographing the first frame is completed, that is, the operation of empty film feeding by the film feeding system will be explained. When the tip of the film 28 is inserted into the groove 29a of the spool 29 and the push button 100 is pressed, the push button switch SW6 is turned on via the half-press switch Swl3. At this time, the winding limit switch S w 5 has already been turned on, and the motor control circuit described later detects this, and as described above, the motor 60 is turned on.
0 begins to rotate (right rotation) in the direction opposite to the arrow in the figure.

This rotation causes the pinion 32 fixed to the shimotor shaft 31 to
, the worm 58 rotates to the right, and the gears 33, 59 and 60 rotate in the directions opposite to the arrows (rotate to the left). pinion 3
The rotation of No. 2 is caused by the first gear 33 and the second gear integrated therewith.
The signal is transmitted to the pinion 34, the second gear 35, the third pinion 36 integrated therewith, the third gear 31, and the third
Gear 371fi Rotates in the opposite direction to the arrow in the same diagram (left rotation)
be done.

The reduction gear train from the pinion 32 to the third gear 37 described above is for obtaining the torque necessary for film feeding from the small motor 600.

A film feed plate 39 is fixed below the shaft 38 to which the third gear 31 is fixed, and similarly to the gear 37, it rotates in the opposite direction to the arrow in the figure. When the film is rotated to the left, the protrusion 39m of the feed plate 39 and the hook portion 40a of the film feed pawl 4o engage with each other. Since the rotating shaft 41 of the film feeding claw 40 is embedded in the fourth gear 42, the fourth gear 42 also starts rotating in the same direction. Therefore, the spool 29 is rotated (clockwise) in the direction of the arrow in the figure via the known spool friction mechanism 43, and the film 28Fi is wound onto the spool 29.

On the other hand, the rotation of the fourth gear 42 is transmitted to the fifth gear 44 and the sixth gear 45, which are directly transmitted to the sprocket shaft 4T.
It is not the rotation of

The circumstances will be explained with reference to FIG. As mentioned above, the rewinding state is released by turning the rewind holding lever 6 to the right, but when the rewinding of the previously used film is finished, the sprocket installed at the top of the sprocket shaft 41 generally The phases of the upper pin 47a and the groove 45m provided in the upper part of the sixth gear 45 do not match. For this reason,
Although there is a biasing force from a sprocket shaft lowering spring (not shown), the sprocket upper pin 47a only contacts the upper surface 45b of the sixth gear 45 as shown in FIG. Therefore, the sprocket shaft 47 does not rotate as the sixth gear 45 rotates, and the sprocket pin 48 installed anywhere inside the shaft 47 also does not rotate. Therefore, the groove 49a
The rotation of the sprocket 49, which can only move up and down relative to the pin 48 via the sprocket 48, is not controlled by the sixth gear 45 either. Therefore, at this point,
The film 28 is being moved as it is being wound onto the spool 29, and perforations (not shown) mesh with the teeth 49b of the sprocket 49 to drive the sprocket 49 and the sprocket shaft 47.

However, as is known, when the same driving source is used and the spool 29 is set to wind more film 28 than the sprocket 49, the film 28 advances. Normally, the sprocket upper pin 47a and the groove 45a are in phase with each other and engaged at a certain point, and the amount of feed of the shift film 28 is determined by the rotation of the sixth gear 45. This embodiment still operates in a similar manner.

Returning to FIG. 1 again, the count-up of the number of sheets will be explained. A sprocket upper gear 50 is fixed above the sprocket shaft 4T and is constantly engaged with a number counter gear 51. A shaft 27 is installed at an eccentric position on this gear 51, and while the sprocket shaft 47 is rotating, that is, while the gear 51 is rotating via the gear 50, one end of the shaft 27 is attached to the shaft 2T. The connected feed pawl 25 reciprocates substantially in the left-right direction in FIG.

At this point, the back cover has already been closed and the part 1 is turning the back cover interlocking lever 3 to the right, so the number counter locking pawl 13 is turned to the left by the biasing force of the spring 16, as shown in FIG. The locking portion t3a of the locking pawl 13 and the ratchet wheel 17 for counting the number of sheets are connected as shown in FIG.
assumes an engageable position.

As the counter locking pawl 13 rotates to the left, its tip 13b moves to the right in FIG.
a can be moved upward to the right in the figure, and the pushing force of the spring 26 causes the feeding pawl 25 to rotate to the right, and the pawl portion 25b is brought into a position where it can be engaged with the sheet counting ratchet wheel 11. For this reason, although it is well known and will not be described in detail, the gear 51 is rotated by the rotation of the sprocket 49 by one frame of the film 28, and the feed pawl 25 is reciprocated, and the ratchet wheel 17 is moved tooth by tooth by the pawl portion 25b. is rotated to the right. As a result, as the film was being advanced, "1
” rotates to a position facing the index 24.

During this time, the winding limit plate 12 mounted on the sprocket shaft 4γ rotates multiple times. The original note raising limit lever 9
1-t, since it is biased in the left rotation direction by the spring 52, it rotates left around the shaft 8 and the hook 9b comes into contact with the outer periphery 12bK of the limit plate 12, and the notch t2m and the hook 9b There is a risk that when the two are directly facing each other, they may engage with each other, interrupting subsequent film feeding. Despite this situation, in order to enable the blank feed up to the first frame, the blank feed shikam 19, which operates integrally with the number board 20, has a protrusion 19.
& comes into contact with the arm 9eK of the hoisting limit lever 9, preventing it from rotating to the left. However, since the structure is such that the contact is released just before the number "1" on the sheet count board 20 directly faces the index 24, the lever 9 is rotated to the left after the film 28 has been fed by a predetermined amount. The hook 9b has a notch 12a
, and film advance is mechanically blocked. While the number of sheets 20 is indicating from "S" to "1", the winding restriction is inactive. Therefore, the winding limit switch Sw5, which was pressed by the arm 9a of the lever 9,
is turned OFF, and the power supply to the motor 600 is cut off by the action of a control circuit 185, which will be described later, and the film feeding is now completed.

Here, a note will be made regarding the function of the winding limit holding lever 53. This lever 53 is biased clockwise by the rotation of the shaft 54 by a spring 55, and the pin 53b planted thereon comes into contact with the recess 12e provided on the outer periphery of the winding limit plate 12. The tip 9d of the winding limit lever 9 can be locked with the tip 53a only when the winding limit lever 9 is closed. The tip 53a of the lever 53 is dimensioned to lock the tip 9d only when the lever 9 is rotated sufficiently far to the right.

When the winding limit lever 9 rotates to the right by a large amount, when the camera back is opened, the pin 3a on the camera back interlocking lever 3 and the arm 9
a, and a case where the pin 9e on the limit lever 9 is pushed by the end of the intermediate lever 56 due to counterclockwise rotation of the intermediate lever 56, which will be described later. Note that when the outer periphery 12b of the winding limit plate 12 and the hook 9b are in contact with each other, the right rotation angle of the limit lever 9 is small, so the tip 53& does not engage the tip 9d. Therefore lever 9
The Ifi hook 9b can turn left from the state in which it is in contact with the outer circumferential portion 12b without being blocked by the hoisting limit holding lever 53 and fall into the notch 12a of the limit plate 12.

During this idle feeding, none of the aperture 79, the front curtain 115 and rear curtain 115' of the shutter, and the quick return mirror held by the holding frame 132 is driven. Each of these will be explained in detail later.

Next, the photographing and the subsequent winding operation will be explained.

When the push button 100 is pushed down again in FIG. 1, the half-press switch Swl 3 is turned on. This starts energizing a part of the circuit, which will be described later.

The light passing through the lens 78 is reflected by a quick return mirror held by the holding frame 132 and enters the light receiving element FD. The output of the light receiving element PD is introduced into an exposure control circuit and calculated. Next, when the push button 100 is pressed down further, the fully pressed switch SW6 is activated, and the photometry result by the ONL light receiving element PD is stored by the exposure control circuit.

Further, when the switch S w 6 is turned on, other operations such as those described below are also started. That is, since the winding limit switch Sw5 is OFF at this time, the motor 600 starts rotating (leftward) in the direction of the arrow in FIG. 1 under the action of the motor control circuit. Therefore, the pinion 32 fixed to the motor shaft 31 and the worm 58 rotate. pinion 3
Since the first gear 33 is always in mesh with the worm 58, and the seventh gear 59 and the tenth gear 60 are always in mesh with the worm 58, these gears start rotating in the directions of the arrows at the same time.

First, the system C (hereinafter abbreviated as "film feeding system") which is interlocked with the meshing of the pinion 32 and the first gear 33 will be explained. The rotation of the motor shaft 31 is converted into an appropriate rotation speed and torque by the reduction gear train, and the third gear 37 is rotated in the direction of the arrow in the figure (clockwise rotation). 3rd gear 37
As the shaft rotates to the right, the shaft 38 to which it is fixed also rotates,
A rotation regulating plate 61 and a film feed plate 3 fixed to this
9 are both rotated (clockwise) in the direction of the arrow in FIG.

A mirror raising locking pawl 62 is urged by a spring 63 in the counterclockwise direction and comes into contact with the outer periphery of the rotation regulating plate 61, and the regulating plate 61 rotates only a predetermined angle from the state shown in FIG. When turning to the right, the locking portion 61a of the regulation board 61 is locked and the regulation board 61 is rotated to the right.
prevent rotation. As a result, this acts as a stopper in the aperture drive system, mirror drive system, and shutter charge system, which will be described later. The film advance plate 39, which is also fixed to the shaft 38, is in a position where its protrusion 39m and the hook portion 40a of the film advance claw 40 engage with each other when shooting starts, but since the advance plate 39 rotates to the right, The attachment is released and the rotation is not transmitted to the feed pawl 40. Therefore, in this case, unlike the case of the above-described film feeding, the fourth gear 42 and the following do not rotate, so the film is not fed.

During the above clockwise rotation, the pin 37& fixed on the third gear 37 pushes the arm 65m of the winding restriction release lever 65, and the lever 65 is rotated to the left around the shaft 67 against the action of the spring 66. However, since the pin implanted in the other arm of the release lever 65 moves in a direction away from the one end 56a of the intermediate lever 56, it does not affect the lever 56. Therefore, by means of the lever 56, the limiting lever 9
is not rotated and winding is limited.

Next, a system (hereinafter abbreviated as "aperture drive system") that is linked to the meshing of the worm 58 and the seventh gear 59 will be explained. As the motor 600 rotates counterclockwise, the seventh gear 59 rotates in the direction of the arrow in FIG. Start rotating in the same direction. but,
Since the rotation regulation plate 61 in the film transport system and the mirror upward locking pawl 62 restrict clockwise rotation, the rotation of the motor shaft 31 is restricted via the gear train, and the shaft 69 is also rotated within a predetermined range. Only corners can be rotated to the right.

When the shaft 69 begins to rotate clockwise from the state shown in FIG. It cannot be rotated to the left (rotated to the left). This is because the arm portion 102b of the lever 102 is in contact with the pin 74 implanted in the aperture holding lever 75. Therefore, the lever 102 works together with the diaphragm retaining lever 75 to move the shaft 77 against the biasing force of the spring 76.
Turn left around.

In this embodiment, it is assumed that the diaphragm interlocking lever 19, which is interlocked with the diaphragm mechanism of the lens 78, is receiving a downward biasing force in the drawing. This lever 79 is prevented from descending by the tip 80m of the aperture regulating lever 80, and at that time the aperture is open. By turning the aperture holding lever T5 to the left, the hook portion 75m and the pin 81 installed in the aperture regulating lever 80 are disengaged, and the aperture regulating lever 80 is stopped by the urging force of the aperture movement lever 79 and the spring 82. Okay, tip 80a
Can move in the downward direction (can rotate to the right when rotating the shaft 84)
becomes. As a result, the throttle control lever 80 rotates to the right from the state shown in FIG. 1 through contact between the pin 83 installed at a different position and the throttle cam 71, and gradually reduces the lift amount. Following the cam 71, it rotates to the right around the shaft 84, and the diaphragm is tightened.

The aperture depth is measured by the resistor 302 and the brush 303 provided at the 1st end 80C of the regulating lever 80, and is based on the previous measurement results, the set shutter speed, film sensitivity, etc. When the calculated appropriate resistance value is reached, the coil 85 is energized by the action of an exposure control circuit, which will be described later. Then, until then, the joke 81 by the permanent magnet 86
Since the attraction force of the armature 88 which has been attracted to the armature is temporarily reduced, the armature 88 is succumbed to the biasing force of the spring 89 and rotates to the left as the shaft 91 rotates together with the aperture locking pawl 90 attached thereto. The claw portion 90m of the locking claw 90 is the gear 93!
In order to lock the enlarged gear train 93 consisting of L% s3b, 93c, etc., the aperture regulation lever 80 integrated with the gear 93c is stopped, and an aperture value that provides proper exposure is set. The enlarged gear train 93 is installed to increase the resolution and accuracy of setting the aperture value.

Next, how the system (hereinafter abbreviated as "shutter charge system") that is interlocked with the meshing of the worm 58 and the tenth gear 60 operates during this time will be explained based on FIG.

As the motor 600 rotates to the left, the gear 59 rotates to the right and at the same time, the 10th gear 60 rotates in the direction of the arrow in the figure (left rotation).
Start. Then, the shaft 105 fixed thereto and the eleventh gear 106 fixed to the shaft 105 also rotate to the left.

As a result, the 12th gear 107, which is always engaged with the 11th gear 106, rotates to the right, and the leading charge gear 109, which is integrated with the shaft 108, also rotates to the right.

Gear 109 is in the leading sector gear 1 during the right turn.
0, and while the gear 110 remains engaged for a certain period, it is rotated to the left by the rotation of the shaft 112, and when it eventually comes to correspond to a part where no teeth are formed, the leading charge gear 109 and the leading sector The gear 110 is disengaged, and from this point on, only the leading charge gear 109 continues to rotate to the right. The clockwise rotation of the gear 109 is stopped when the rotation regulating plate 61 in the film feeding system engages with the mirror raising locking pawl 62.

On the other hand, the leading sector gear 110, which has been disconnected from the charge gear 109, is moved to the first sector gear by the biasing force of the spring 111.
Return to the position shown in the figure. In this way, the leading curtain sector gear 110 is attached to the shaft 11 which is vertically installed on the leading curtain arm 113.
At this time, the leading curtain arm 113 provided coaxially with the gear 110 is pushed by a pin 114 provided at one end of the sector gear 110 and rotates to the left.
The hook portion 113a reaches a position where it can be engaged with the leading curtain claw 116. A pin 117 is separately provided on the sector gear 110, and as the gear 110 rotates to the left, a spring 118
Press. The front curtain pawl 116 is rotated to the right due to the biasing force of the spring 118, and the armature 119 attached to this pawl 116 is pressed against the yoke 120.

From this point on, the yoke 120 is moved by the attraction force of the permanent magnet 121
The armature 119 maintains the attracted state against the biasing force of the spring 122. In such a state, the hook 116a of the pawl 116 and the key portion 113a of the arm 113 are held together against the front curtain tension spring (not shown), and the preparation for running the front curtain is completed. Note that the front curtain auxiliary arm 123 functions to support the front curtain 115 in cooperation with the front curtain arm 113.

Regarding the rear curtain, the operation is exactly the same from the rotation of the 12th gear 107 in the direction of the arrow in Fig. 1 until the rear curtain is ready to travel, so parts corresponding to the front curtain charging mechanism have the same number. are indicated with a dash, and detailed explanation will be omitted.

The operation performed as described above is an example of a well-known shutter charging operation, and this shutter charging is mainly performed when the aperture is narrowed down. This shutter charge has the effect of slowing down the shutter to accurately control the aperture.

In the process of tightening the above tightening holes, the 8th gear 7
Since the 0 and 9th gears 124 are always in mesh with each other, the shaft 125 also continues to rotate to the left. This shaft 125 is for driving a reflex mirror.

As the shaft 125 rotates to the left, the first arm 126 fixed thereto also rotates to the left. A shaft 127 implanted at the tip of this arm 126 also rotates to the left around the shaft 125, and a tip 128a of a second arm 128 rotatably attached to the shaft 127
moves to the right from the state shown in FIG.

Here, the shaft 131 implanted in the mirror holding frame 132 and the third
The arm 130 is rotatably coupled, and can rotate around the shaft 64 of the mirror holding frame 132. Returning to the right rotation of the second arm 128, when the tip 128a moves to the right, the third arm 130 moves as shown in FIG.
The claw portion 133a at the tip of the leaf spring 133 fixed to the second
Since it is hooked on arm 128, this arm 128 and third arm 130 become engaged, and henceforth act as one arm. This acts as a rod, and the first arm 1
26 is a crank whose rotation center is shaft 125; shaft 12'r;
serves as a crank pin and functions to push up the mirror holding frame 132.

At this time, since the enclosure portion 126a is provided with an opening,
Movement of shaft 129 is not restricted.

This is pushed up by a half turn of the pick and shaft 125.

The mirror holding frame 132 begins to turn left around the shaft 64, and eventually the arm 132a provided integrally with the mirror holding frame 132 is released from contact with the mirror lowering position switch Sw1, and the switch SWI is turned off. This switch S w 1 is turned off during the left rotation of the shaft 125, and as described above, the shutter charging operation is also performed during this period.

Now let's go back to the shutter in the middle left corner.

The trailing curtain arm 113' is integrally provided with another arm 113'a, and by the action of charging the shutter, the arm 113' rotates to the left around the shaft 112', and the trailing curtain travel completion switch SW4 is activated. arm 113'
The contact with a is released and the switch SW4 is turned off.

The rear curtain running completion switch Sw4 is configured to be turned off before the mirror lowering position switch SW1 is turned off.

The functions of these two switches will be described later.

Let's return to the mirror system again.

The crank mechanism described above sets the gear ratio of the eighth gear 70 and the ninth gear 124 so that when the shaft 125 rotates left by half a rotation, the first arm 126 is substantially in a straight line with the second arm 128 and the third arm 130. is set. That is, this is the time when the rotation regulating plate 61 in the film feeding system and the mirror upward locking pawl 62 are engaged.

FIG. 4 shows the state when the mirror has finished rising. In this state, the arm 132 provided integrally with the mirror holding frame 132
A turns on the mirror stop switch Sw7 when the frame 132 has finished rising. This signal causes the motor 600 to stop under the action of the control circuit. It is assumed that the motor 600 has a slip mechanism (not shown) and is capable of slipping when its rotation is stopped by an external force. This is not shown because it is a well-known and common-sense accessory mechanism when the camera is driven by a motor.

If the state shown in FIG. 4 continues for too long, the second arm 128 and the third arm 130, which are straight
There is a concern that 9 will buckle in the direction of movement to the right. In order to deal with this, it is desirable that the leaf spring 133 have a biasing force to come into contact with the back surface of the second arm 128. In this way, the back surface of the second arm 128 and the leaf spring 13
This buckling can be prevented since a frictional force is generated between the surfaces of the parts 3 and 3.

In the manner described above, the aperture was stopped down from the open aperture to the desired aperture, the shutter was charged, and the reflex mirror was retracted from the optical path to prepare for the lightning operation of the shutter.

If the front curtain coil 135 is energized at an appropriate timing, the attraction force of the permanent magnet 136 is temporarily weakened, and the spring 1
Due to the urging force of 37, the attraction between the armature 119 and the yoke 120 is lost, the leading claw 116 rotates to the left, and the hook 116
a releases the engagement of the hook portion 113a of the leading curtain arm 113, so that the leading curtain 115 travels by the force of a leading curtain drive spring (not shown). Next, when the trailing curtain coil 135' is energized at a time when the set shutter speed can be obtained, the trailing curtain 115' runs in exactly the same way as the leading curtain. Near the beginning or end of the trailing curtain run, the trailing curtain switch SW4, which had been OFF in the charged state up to that point, comes into contact with another arm 113'a of the trailing curtain arm 113' and is turned ON.

In response to this signal, the motor 600 starts rotating (clockwise) in the opposite direction to the arrow in the figure, either immediately or after a suitable time lag, by the action of a control circuit to be described later. Then, the mirror returns and the aperture is opened, and each part returns to the state shown in FIG.

First, regarding the return of the mirror, when the seventh gear 59 rotates to the left, the rotation is transmitted to the eighth gear 70 and the ninth gear 124, and the shaft 125 and the first arm 126 begin to rotate to the right.

Accordingly, the second arm 128 and the 37th arm 1
30 is pulled downward in FIG.
goes down from the rising state shown in FIG. Then, when the first arm 126 faces downward, the enclosing part 126& comes into contact with the shaft 129, and the two are aligned on the same axis, returning to the state shown in FIG. 1, and the holding frame 132 stops moving. That is, when the mirror returns, the holding frame 132 is lowered by the rotation (clockwise rotation) of the shaft 125, and thereafter does not move at all.

No matter how many times the shaft 125 rotates to the right in this state, the arm 1
26 and arm 128 are connected to shaft 125 together via pin 127.
and 129, the claw portion 133a of the leaf spring 133
Because of the taper portion 133b (FIG. 4) provided behind the third arm 130, even if the second arm 128 comes into contact with the leaf spring 133, the claw portion 133a is displaced and escapes.
does not rotate, and the mirror holding frame 132 does not move.

When the holding frame 132 rotates to the right around the shaft 64, the mirror stop switch SW7 is switched from on to off, contrary to the case when the holding frame 132 is rotated to the left, and the mirror lowering position switch SW7 is also switched from off to on.

At the beginning of this mirror return operation, the bottle 127 contacts one end 306a of the reset lever 306 and rotates the lever 306 to the left around the axis 307 against the biasing force of the spring 308, so that the other arm 306b of the lever 306 It moves upward in the figure and presses the magnetic reset spring 73, causing the armature 88 to be attracted to the yoke 87. Therefore, the engagement between the locking portion 90a of the locking pawl 90 and the gear 93a is released, allowing the gear train 93 to rotate.

Next, the opening operation of the aperture will be described. As the gear 59 rotates to the left, the aperture cam 71 also rotates to the left, but there is a portion where the amount of lift is constant.
After the engagement is released, the amount of lift is gradually increased. Therefore, the bottle 83 is pushed upward, and the aperture regulating lever 80 is rotated to the left to raise the lever 19, so that the aperture of the lens 78 is opened. When the lever 80 turns left, the aperture holding lever 75 turns right due to the biasing force of the spring 76.
Since the hook portion 75m locks the bottle 81, the open state of the aperture is maintained. Note that as the aperture cam 71 rotates to the left, its tip 71m lifts up the end 102 of the holding release lever 102, but at this time, the lever 102 only rotates to the right against the spring 141, and the aperture holding lever 75 rotates to the left. There's nothing to do. Therefore, no matter how many times the aperture cam 71 rotates to the left, the aperture remains open.

When the aperture regulating lever 80 turns left, the enlarged gear train 93 also rotates, but at this time the aperture locking pawl 9 has already been turned.
0 claw part 90m does not lock gear 93m.

In this way, after the motor 600Fi is exposed, it rotates to the right and rotates the shaft 69.
By rotating the mirror to the left, the mirror is returned to the photographing optical path, and the diaphragm is returned to the open state, after which it is possible to continue rotating to the right while maintaining this state.

The operation of the shutter charge system during this busy period will be explained. As the motor 600 rotates to the right after exposure, the 10th gear 6
0 begins to rotate (clockwise) in the direction opposite to the arrow in the figure, the leading charge gear 109 rotates to the left, and when it meshes with the leading sector gear 110, the gear 110 is rotated by the spring 1.
Rotate to the right against the action of 11. However, gear 11
Since the bottle 114 installed at 0 is rather moving away from the leading arm 113, the leading arm 113 does not move at this time. Similarly, the rear curtain arm 113' does not move.

After that, the engagement between the leading charge gear 109 and the leading sector gear 110 is disengaged, and the leading sector gear 1 is disengaged.
10 is rotated to the left by the biasing force of spring 111 and returns to the illustrated position. Similarly, the trailing sector gear 110 rotates counterclockwise and returns by the action of the clockwise rotation rear spring 111'. In this way, the shutter charge system is also configured so that it does not matter how many times the motor 600 is rotated to the right after exposure.

Next, we will explain the operation of the film transport system. After exposure, when the motor 600, that is, the binion 32 rotates to the right, the third gear 37Vi rotates to the left via the reduction gear train. At this time, the bin 37a installed in the third gear 37 also moves accordingly, and in order to push the arm portion 65g of the winding restriction release lever 65, the lever 65 rotates to the right.

Accordingly, the pin 68 installed on the lower surface of the other end of the lever 65 pushes the arm portion 56m of the intermediate lever 56, so that the lever 56 rotates to the left. As a result, the other arm 56b of the lever 56 is attached to the bin 9, which is attached to one end of the hoisting limit lever 9.
Press @, so turn this lever 9Fi to the right and hook 9 at the tip.
b disengages from the notch 12g of the hoisting limiter 12, and the hoisting limiter 12 becomes rotatable. i.e. Tanabata 600
The hoisting restriction can be reliably released by driving the . In addition, due to this, the tip 9d of the lever 9 is moved to the winding limit holding lever 5.
3 is locked, and the winding restriction released state is maintained.

When the third gear 37 turns to the left, the rotation regulating plate 61 simultaneously starts to turn to the left from the position where it is locked by the mirror raising locking pawl 62, and the film feed plate 39 also rotates in the same direction. Then, as shown in FIG. 1, when the projection 39a of the feed plate 39 and the hook portion 40a of the film feed claw 40 engage,
Gear 42 begins to rotate to the left. When the gear 42 rotates, the spool 29 rotates in the direction of the arrow via the friction mechanism 43.

The rotation of the fourth gear 42 is also transmitted to the fifth gear 44 and the sixth gear 45, and the sprocket shaft 47 also rotates to the left through the engagement between the groove 45m and the upper sprocket pin 46. The film 28 thus advances.

Shortly after the film starts to advance, the maximum outer diameter portion 12b of the winding limit plate 12 instead of the convex portion 12c comes into contact with the pin 53b installed in the winding limit holding lever 53. This lever 53 is attached to the shaft 54 by the action of a spring 55.
Rotate Fc to the left to release the lock on the tip 9d of the lever 9. In other words, the hoisting restriction release holding state is thereby released. Therefore, the lever 9 rotates to the left by the action of the spring 52, and its hook portion 9b is attached to the maximum outer diameter portion 12b of the limit plate 12.
comes into contact with.

Note that after this, the notch 12a will face the bin 53b, but the shape of the bin 53b is round, and the right rotation of the winding limit holding lever 53 by a predetermined amount or more is caused by the tip 9dK of the winding limiting lever 9. Due to the restriction, the pin 53b fits into the notch 12a and the winding restriction plate 1
It won't get stuck at 20 rotations.

When the winding restriction plate 12 rotates and its notch 12a faces the hook 9b of the winding restriction lever 9, the two engage, the restriction plate 12 becomes unrotatable, and subsequent winding does not proceed. This completes the winding of the film. At the same time, the arm 9a of the hoisting limit lever 9, which rotates to the left, is displaced to the right in FIG. .

During this time, the sprocket upper gear 50 and the sheet count gear 51, which are fixed to the sprocket shaft 47, continue to rotate, and as the feed pawl portion 25 moves to the left in FIG. The ratchet wheel 17 is advanced by one tooth, and the advanced scale of the number plate 20 is opposite to the index 24. On the other hand, when the feed pawl 25 returns to the right, the locking portion 138 of the sheet counter locking pawl 13 prevents the sheet counting ratchet wheel 17 from reversing. Also, during this film feeding, the aperture drive system, shutter charge system, and mirror drive system are all idle.

The above is an explanation of the operations related to photographing and subsequent film feeding. In order to perform the next photograph, it is sufficient to press the push button 100 again, and at this time the above-described sequence is repeated.

Next, the rewinding operation after one film has been shot will be explained. When the rewind button 7 is pushed upward, the sprocket shaft 47Ifi, which is always biased downward, rises and the one end 6b of the rewind holding lever 6 enters under the stepped portion 7a of the button 7 due to the biasing force of the spring 139. Keep the sprocket shaft 47 in the raised position.

As the rewind holding lever rotates to the left, the rewind button switch SWI5, which has been on until now, is turned off.

The function of this switch 5W15 will be described later.

As the shaft 47 rises like this, the sprocket upper pin 47
m escapes upward from the groove 45a of the sixth gear 45 and connects the sprocket 49 and the sprocket shaft +7Fi to the sixth gear 4.
5 and gears 44 and 42 that are interlocked with it.

On the other hand, the sprocket upper gear 50 and the sprocket shaft 47
Since it is integrated with the gear 5 when the shaft 47 rises,
0 is also in the raised position, and the rewinding interlocking second lever 150 is moved by the conical portion 50a provided on this gear 50.
is rotated to the left about axis 152 against spring 151. A rewinding interlocking second lever 153 is similarly fixed to the shaft 152 of this lever 150, and when the lever 150 rotates to the left, its tip 153a moves to the left in FIG.

Next, when the rewind lever 155 is turned approximately 90 degrees clockwise, the rewind cam 157 integrated with the shaft 156
The rewinding shaft 158Fi, which is also rotated by the same angle and is urged downward, is raised by this cam 157. The shaft 158 is held by a pulley 159 through a pin 158a and a long hole 159a so as to be movable up and down, and is equipped with a rewinding fork 161 at the upper end.
61 can be engaged with a spool of a cartridge (not shown). When the cam 157 turns clockwise, the rewind switch 5W14
is pressed and turns ON. In response to this signal, the motor 600 starts to rotate clockwise due to the action of the control circuit, and the film feed plate 39I
I'i rotates to the left, and the engagement between the feed plate 39 and the film feed pawl 40 is soon released. That is, when the rewind button 7 is pressed and the tip 153a of the lever 153 moves to the left, winding of all the films is completed, and in most cases, the winding becomes impossible before the final winding is evenly completed. Although the protrusion 40b of the film feed pawl 40 is not necessarily in a position facing the tip 153a of the second lever 153, when the film feed plate 39 rotates to the left due to the rewinding operation, the protrusion 40b moves to the lever 153 within one rotation. 1, the hook portion 40a is displaced to the right in FIG. 1, and the engagement with the protrusion 39a of the feed plate 39 is released.

On the other hand, since the third gear 37 and the rewinding gear 163 are always in mesh with each other, when the gear 37 rotates to the left, the shaft 164 and the first pulley 165 to which it is fixed also rotates to the right. 1st
A belt 166 is stretched between the pulley 165 and the second pulley 158 with tension given by a slack removing roller 167. Therefore, when the first pulley 165 rotates to the right, the second boot 9158 also rotates in the same direction, and due to the engagement of the vertical groove 159a provided on the upper part of the second boob with the bin 158a, the unwinding shaft 159 to which the bin is attached also rotates. do. Therefore, a spool of a cartridge (not shown) is rotated via the rewinding fork 161, and the film is rewound.

At this time, as described above, the sprocket 49 can be freely reversed, but the spool 29 can be reversed by the slip of the friction mechanism 43, as in the conventional mechanism. When the rewinding of the film is completed, the roller 801 that was rotating in contact with the film is no longer suppressed by the film 28, so it is displaced forward in the figure by the biasing force of the switch SWI 6, and the roller is attached. The lever 802 rotates to the right around the shaft 803, and the switch S
WI 6tfi turns on.

Therefore, the motor 600 is stopped by the control circuit.

After this, when the rewind lever 155 is returned to the position shown in FIG.
The rewind 7 fork 161 descends and the rewind switch S
WI4 is also turned off.

Note that a reversal prevention pawl 189 is provided to prevent the curling force of the film 28 or to prevent the gear 42 from being rotated during rewinding. This completes the unwinding.

After this, you can open the back cover and take out the cartridge.

Next, we will explain the operation during multiple exposure.

Since the camera is always stopped with film advance completed, the multiple exposure command is performed before the first exposure is given. When the multiple exposure lever 171 is turned to the right, the shaft 172,
The multiple lever 173 also rotates to the right as a unit, and this lever 1
The tip 173a of 73 contacts the bottle 174.

When the lever 173 rotates to the right, it pushes the arm portion 65b of the winding restriction release lever 65, so that the lever 65 is rotated to the left against the force of the spring 66 and held at that position by a mechanism (not shown). The arm portion 65a of the lock release lever 65 is retracted from a position where it can engage with the pin 37a implanted in the third gear 37. Therefore lever 9 via lever 65.56
is never rotated to the right.

Also, by turning the lever 173 to the right, the same lever 173
The multiple identification switch SW2 that was in contact with the switch SW2 is released, and the switch SW2 switches from the on state to the off state. The function of this switch SW2 will be described later.

When a multiple exposure command is issued in this manner, the winding limit plate 12 does not become rotatable even when the motor rotates to the right at a predetermined rotation angle (mirror return stroke) after exposure (travel of the trailing curtain is completed). Therefore, the clockwise rotation of the motor 600, that is, the counterclockwise rotation of the gear 37, is mechanically prevented at the time when the film feed plate 39 and the film feed button 40 engage, and the inertia of the motor 600 prevents the film from continuing to feed. This is a phenomenon different from the photographing operation described above. That is, at the time of photographing, the bin 37a turns the lever 65 to the right in the middle of the mirror, thereby turning the lever 9 to the right via the lever 5G, and the winding limit plate 12 is locked by the winding limit lever 9. His status had been lifted.

The motor 600 is energized when the pin 37a provided at the third gear 37 moves the multi-switch interlocking lever 176 to the shaft 177.
Multiplex stop switch S by turning left around
W3 is turned on, and the control circuit that detects this turns it off. At that point, the locking portion 39a of the feed plate 39
This is before the hook portion 40a of the feed plate 40 engages with the hook portion 40a of the feed plate 40.

In the above-mentioned normal shooting mode, the rear curtain switch SW4 is set to O in relation to the shutter operation due to the action of the control circuit.
When N is reached, the motor 600 begins to rotate clockwise, the winding limit switch SW5 becomes -HON as the mirror returns, and when the film feed is completed and is turned OFF, the power to the motor 600 is cut off. However, in the case of multiple shooting mode,
The switch SW5 remains OFF even when the mirror is restored, so if this switch SW5 is OFF'F and the switch S
When W3 is ON, the motor 600 is stopped by the action of the control circuit. With this, the first exposure is completed.

Next, a second exposure is performed, but in this case, the multiple exposure lever 17 is pressed before pressing the release button 100.
1 manually to the left to return to its normal position, or by rotating it to the left by a known method related to the first exposure, the winding restriction release lever 6
5 is rotated to the right by the biasing force of spring 66 and returns to the position shown, performing the operations detailed above.

That is, after the second exposure is completed, the film 28 is advanced by an even distance and then stopped. The situation is exactly the same for multiple exposures such as triple exposure or more, and it is sufficient to return the lever 171 to its original position before pressing the button 100 for the final exposure.

Here, if the photographer forgets to manually return the multiplex lever 171 before the final exposure of the multiple exposure, the film will not advance even after the final exposure, so the next shooting will be a new screen shot. However, in the future, it becomes a problem if unintended re-exposure is performed on any multiple exposure screen.

Therefore, FIG. 5 shows a modification in which the return operation of the multiple lever 171 is performed after the last exposure of multiple exposures, rather than before.

A cam 65 is located below the shaft 172 that is integrated with the multiplex lever 171.
1 i: It is fixed, and when the multiple lever 171 is rotated to the right, the cam 651 is attached to one arm 652a of the lever 652.
Press from the side. Therefore, the lever 652 is
It is rotated to the left around the axis 653 against the biasing force of 4. The cam 651 further rotates to the left and overcomes the lever 652. Since the lever 652 is no longer interfered with by the cam 651, it rotates to the right and returns to the illustrated position, and is held at that position. At this time, the lever 173 rotates the lever 65 to the left so that its arm 65
& is evacuated from the rotation path of the bottle 37a in FIG. The shaft 653 is implanted in the lever 655, but the spring 6
Since the lever 655 Fi is biased in the counterclockwise rotation direction by the biasing force of the lever 657, the lever 655 does not move due to the counterclockwise rotation of the lever 652.

However, after the last shooting of multiple exposure is completed, the multiple lever 171
When the cam 651 is rotated to the left, one arm 6 of the lever 652
The tip of lever 652 is caught and pressed to try to rotate lever 652 to the right.

However, the lever 652 cannot rotate to the right because it is in contact with the pin 655a of the lever 655, and this pressing force is applied to the lever 655.
55 to the right around axis 656.

A pin 658 is implanted at the tip of one arm of L//<-655, which can come into contact with the lever 56 explained in FIG. The hoisting limit lever 9 explained in the figure also rotates to the right in conjunction with this.

At this time, the winding limit switch SW5 shown in FIG. 1 is turned on, and film feeding is started by the action of the circuit. In other words, on the screen after multiple exposure, the film 28 is transferred to the spool 2.
9 and moves to be wound up, and the next unexposed screen stops facing an aperture (not shown). The end of film feeding is the same as previously explained, so it will not be discussed again.

This concludes the explanation of multiple shooting.

This mechanism can be used for shooting in situations where the sound of film winding is not possible. That is, before photographing, the multiplex lever 171 is rotated to the right to prevent film winding immediately after exposure, and when the situation is such that it is permissible to wind the film, the lever 171 is rotated to the left to wind the film. be able to.

The relationships between the operations of each prefecture and the switches that restrict them are summarized above based on Figure 6. The full valve switch SW6 is on when the diagram shows a high level, and off when the diagram shows a low level. The motor 600 rotates to the left when the diagram is above the reference line indicating when it is stopped, and to the right when it is below. The diagram of resistor 302 shows its resistance level.

The diagram of the coil of the aperture control magnet 85 shows the current value. The diagram of the mirror holding frame 132 shows rising and falling.

The mirror lowering position detection switch SW7 and the mirror stop switch 5W70 are on when the level is high and off when the level is low. In the diagram of the shutter front curtain 115, the direction below the reference line is the charging direction, and the reference line is the travel completion position. The same applies to the shutter rear curtain 115'. The coil diagram for the leading magnet 135 shows the current. This also applies to the coil 135' for the trailing curtain magnet. Regarding the diagrams of the trailing curtain running completion switch SW4, the multiple winding stop switch SW3, the winding limit switch SW5, and the film rewinding end switch SW i 6, a high level indicates on, and a low level indicates off.

Here, the photographing sequence will be summarized according to the time chart shown in FIG. When the film counter shows "1", decide on the subject and turn on switch SW6.
The motor 600 rotates to the left, and the aperture drive system and shutter charge system are driven. In parallel with this, the mirror drive system is driven, and the holding frame 132 is raised from the observation position to the photographing position. When the holding frame 132 rises, the switch SW7 is turned on and the motor 600 is stopped. Subsequently, the leading curtain 115 and the trailing curtain 115', which have been charged for exposure, run, and at this time, the excitation current of the magnets 135 and 135' is turned on.

When the trailing curtain 135 completes running, the switch SW4 is turned on, and the motor 30 begins to rotate to the right. As a result, the mirror holding frame 102 is lowered and the aperture is opened. The motor 600 continues to rotate to the right, driving the winding system and feeding the film.

During this time, the aperture drive system, shutter charge system, and mirror drive system are not tilted or driven. The clockwise rotation of the motor 600 is stopped when the switch sw5 is turned off. After all frames have been photographed, the button 7 is pressed to release the engagement between the bin 47a and the groove 45a, disconnect the motor 600 and the winding system, and engage the rewinding coupling 161 with the cartridge. At the time of rewinding, the switch SWI 4 shown in FIG. 1 is turned on to start rewinding, and the motor 600 rotates to the right to store the exposed film in the cartridge. When the rewinding is completed, the switch 5W16 is turned on and the motor 600 is stopped. Note that when the switch SW3 is turned on during multiple exposure, the right rotation of the motor 600 is stopped and subsequent strokes are cut.

Now, we will explain the low-speed drive, or silent mode, which allows a camera that operates in this manner to operate extremely quietly.

Figure 7 is a schematic diagram of the external affairs of this camera.

Reference numeral 401 indicates an operation lever for the speed changeover switch, and the eighth
As shown in the diagram seen from above, it can be switched to three stages: H, N, and L.

Now, when the L index 402 and the lever 401 are made to face each other, a switch to be described later is switched inside the camera, and only the mirror return, aperture opening, and film advance steps shown in FIG. It will be controlled and driven at extremely low speed. Therefore, the time required for the aperture control process and the mirror raising process does not change, allowing the photographer to accurately capture a photo opportunity, and the accuracy of the aperture control also does not change, which is advantageous. On the other hand, the volume after shooting, which accounts for most of the camera's operational noise, can be kept extremely low.

Also, by utilizing this silent mode, a slow film feed K can be applied to prevent film damage in extremely cold regions.

Next, when the battery pack 403 shown in FIG. 9, which is replaceable for the camera body 404, is replaced with another high power pack 405 shown in FIG. 10, which generates a higher voltage, the battery pack 403 shown in FIG. Then, the contact piece 411 of the switch 406 inside the camera body switches from being electrically connected to the terminal 408 to being in contact with the terminal 407. That's pack 4
The mounting provided on 03, 405 is the reference pin 409° 410 and 4 of 409' and 410' for positioning.
Since the effective lengths h of 09 and 409' are different, the insulating part 41 at the tip of the contact piece 411 when attached to the camera body 404
It operates depending on whether or not 1a is pressed.

Note that 412 and 412' are terminals for supplying power to the camera body 404. The camera body 404 is also provided with a suitable receiving mechanism for these terminals and reference pins, but this is not shown because this is done by known means.

When the switch 406 is in the state shown in FIG. 11, when the lever 401 in FIG. 8 is switched to H, the switches described later are switched inside the camera, and the mirror return and aperture opening strokes and film advance in FIG. The stroke will be driven at higher speed by controlling the shim motor 600 by the function of the circuit described later.

Therefore, the time required for the aperture control process and the mirror raising process does not change, allowing the photographer to accurately capture the photo opportunity, and the accuracy of the aperture control also does not change, and the mirror bounces due to the high-speed operation. There is no need for the shooting screen to be displayed.

On the other hand, since the time required for one cycle of photographing is shortened, the probability of a photo opportunity increases becomes K.

FIG. 12 shows an embodiment of a circuit for controlling the mechanism shown in FIG. In the figure, the mirror lowering position switch SW is the first
As described in the figure, when the mirror holding frame 132 is lowered to a predetermined position, it is turned on, and when it is raised, it is turned off.

As described in FIG. 1, the multiplex photography changeover switch SW2 is ON when the multiplex photography changeover lever 171 is in the normal photography position, and is OFF when it is in the multiple photography position.

As described in Fig. 1, the multiple winding stop switch SW is ON during a predetermined phase from just before film advance and during a predetermined phase from just before film advance is completed, and is OFF at other times. There is.

As described in FIG. 1, the rear curtain run completion switch SW is turned ON when the rear curtain of the shutter is closed, and turned OFF when the shutter is reset.

As described in FIG. 1, the winding limit switch SW is turned ON during the return process of the mirror, and turned OFF when film advance is completed.

As described in FIG. 1, the full press switch S W s is turned ON when the push button 100 is pushed to the final stroke, and turned OFF when the push button is returned.

As described in FIG. 1, the mirror stop switch SW7 is turned on when the mirror holding frame 132 rises to a predetermined position.
When it descends, it turns OFF.

The SC selector switch SW is a switch not shown in Fig. 1, and is set to the S side (ON>) when the switching lever (not shown) selects the gobo photography mode, and to the C side (ON> when the continuous photography mode is selected). By switching to OFF), continuous shooting or continuous shooting is controlled as described later.

As shown in Fig. 8.9, the selector switch SW is a switch that is linked to the operating lever 401 of the speed selector switch and selects terminal a or b, and when the operating lever selects the highest speed, the terminal side is The other terminals are on the a terminal side. The control lever 401 is also linked to a variable resistor VR for varying the motor speed and a variable resistor VR1 for varying the detection time of the film end detection timer. The interlocking relationship is that the resistance value increases as the operating lever selects a higher motor speed;
The resistance value of R becomes lower as the high speed side is selected.

The switches SW and o are the main power switches, which are not shown in Figure 1.
This switch is set to N and turns off the power when the camera is not in use so that the camera will not take pictures even if the push button 10G in FIG. 1 is inadvertently operated.

Switch SW, 1 is a power supply changeover switch not shown in FIG. 1, and when a connector for power supply is inserted from the outside into the external power supply connector 605 in FIG. 12, it automatically switches to the 605 side and the battery EB is It is disconnected and becomes the external power supply side. When the external power supply connector is not connected to the connector 605, the circuit is switched to be powered by the battery EB. In addition, the changeover switch SW,, is the 11th
The switch 406 shown in the figure may be used to selectively use battery packs 403 and 405 as shown in FIGS. 9 and 10.

Back cover open/close switch SW! As mentioned in Figure 1, it is OFF when the back cover is open and ON when it is closed. The switch SW in Fig. 13 is also a switch for opening and closing the back cover, and is linked to the release lever 5 in Fig. 1, and is ON when the back cover is open.

Turns OFF when closed.

As described in FIG. 1, the half-press switches SW, , turn on when the push button 100 is half-pressed, and turn off when the push button is returned.

The rewind switch SW□ is not ON when the rewind lever 155 shown in FIG. 1 is set to the rewind state, and is 0FPK in the normal film advance position.

As described in FIG. 1, the rewind button switch SW, is OFF when the rewind button 7 is pressed and rewind is possible, and is ON during normal shooting conditions.

The film rewind switch SW, 6 is turned ON when the film 28 is wound around the spool 29 as described in FIG.
'F: Turns ON when the film is removed from the spool or when there is no film.

A DC speed generator 601 connected to the motor shaft of the motor 600 is hidden from view in FIG. The power generation polarity of the DC speed generator 601 changes depending on the rotational direction of the motor 600. In diagram M1, when the motor 600 is in a clockwise rotation state, the output of the speed generator 601 is the diode DI.
The connection point side with + D 2 is the positive pole, and when the motor 60 is in the left rotation state, the diodes D,,D.

The connection point side is the positive pole, and in each polarity, the generated voltage is proportional to the rotation speed of the motor 60G. 11 Mjt + "is in FIG. 12 is the aperture control magnet coil 85, the shutter front curtain start magnet coil 135, and the shutter rear curtain start magnet coil 1 in FIG. 1.
Corresponds to 35'. The variable resistor VR in FIG. 13 is a variable resistor for aperture control constructed as shown in FIG. 1 (7) 302 and 303. The LED in FIG. 12 is a light emitting diode shown in FIG. 1 for displaying a warning during the multiple shooting mode, and blinks during the multiple shooting mode. LED.

is placed in a well-known, easy-to-see position trap such as in the finder. OLE'D2 in Figure 12 is a light emitting diode for warning display, which is not shown in Figure 1, and #i lights up when all the film shooting is completed and rewinding is completed, and when the second rewind is performed, the light emitting diode #i lights up. It will flash if you do not press the return button and just in case. The LED may also be placed in the viewfinder in the same way as the LED.Next, the operation of the circuit will be explained.

Since nothing is connected to the external power connector 605, the power supply selector switch SW is used to supply power to the circuit from the battery EB inside the camera.

has become EB@. In the following explanation, the main power switch SW+oF:I' is turned on.

(1) Operation of the circuit when loading film (1) -1 Operation when the back cover is open At this time, as mentioned in the explanation of Fig. 1, the back cover open/close switch sw is OFF.
, Sui'/chi sw1. is ON, hoisting limit switch sw
5 is ON.

Since the rewind lever 155 in FIG. 1 is in the normal position, the rewind switch SW, 4 is OFF'F. It is assumed that the switch sw is connected to the a terminal side.

When the push button 100 is pressed in this state, the half-press switch SW
, are not turned on, the transistor Qu is controlled to be turned on via the resistor R8, and the circuit is energized.

In FIG. 12, the power supply line is particularly shown, and energization of the 'V'-Ny circuit is carried out by transistors Ql and K. When transistor Qll turns ON, transistor Q+z also turns ON, but since switch SW and 2 are OFF, it is a transistor. It has no effect on the control of 11. Therefore, the circuit is energized only when the half-press switch 3w is turned on. When the circuit is energized, at the initial stage of energization, the output of the capacitor C1, resistor R, and inverter NV for a predetermined period of time becomes L.
, (G26, Gtt) and other digital circuits not shown.

From the reset operation trap, the NAND gate game output beam, G,
The output is ■, the G2° output is H, G, and the output is LK. As mentioned in Fig. 1, hoisting limit switch SW is turned ON.
Since G3 output is held at H1 inverter INV
, the output is L. Therefore, the G6 output is held at H, and the setting operation of the flip-flop circuits G, G by the push button switch SW6, which will be described later, is not performed.

Rewind switch SW, 4 is OFF, so inverter INV
,,output is LXAND gate G gate +GMT +
G23+G31 output is LXG, 2 output is H. The output of the inverter INV is high because the output of the NAND gate is low.

Since the inputs of the AND game are all H, the output is H, and the output of the NOR gate GIG becomes L. transistor Q
Since +a is OFF, capacitor C6 is charged via variable resistor VRse, but the output of comparator A remains constant until the voltage of capacitor C6 reaches a predetermined voltage, that is, time constant circuit V.
The H state is maintained until a predetermined time determined by Rs and Ca has elapsed. Therefore, the AND game 11l output is high, the AND gate G14, and the OR game GIs output are H.
It is. , the H output of OR Gege GIS is the diode D
The capacitor C11 is short-circuited and discharged via the transistor Q zo 'e ON through the capacitor C11, and the transistor Q is kept in the OFF state. At the same time, since the transistor Qa is biased ON through the resistor, the transistors QI and Qt are turned ON.

AND game 13 is L, so the transistor Qs.

Q4 Qt is OFF. Therefore, current flows in the motor 600 from the battery EB in the direction of transistor Q+→motor 600→transistor Q, and with the current in this direction, the motor 600 rotates to the right. When the motor 600 rotates to the right, the DC speed generator 601 also rotates in the same direction, and as described above, the variable resistor VR2 and the resistor R? A current flows through. As the rotation speed of the motor 600 increases, the voltage at the (+) input terminal of the resistor R1 and the comparator A increases and exceeds the reference voltage E.
, the outputs of the transistors Qs and Qs are turned on. When transistor Q is turned on, transistor Q,
is turned off and transistor Q1. Q? Since the motor 600 is also turned off, power is no longer supplied to the motor 600 and the rotational speed decreases. That is, since the rotation of the motor 600 is subjected to speed feedback, it is controlled to a predetermined rotation speed depending on the resistance value set in the variable resistor VR2.

The above speed feedback operation is performed in conjunction with the operation lever 401 of the speed changeover switch, and the changeover switch SWo is set to the 3-terminal side. This is done when the selection is made. When the selector switch SW selects the b terminal side, that is, the highest speed, the DC speed generator 60
Since the generated voltage of 1 is not transmitted, no speed feedback operation is performed, and the motor 60 operates at the maximum speed depending on the voltage of the power source EB.
0 rotates. Transistor Ql in this state? ON
, OFF' are not related to the control operation, so their explanation will be omitted. When the half-press switch SW, , is turned off or a predetermined time determined by the time constant circuit VR, C6 has elapsed, the transistor Qa Q+ is turned off. is turned off, and capacitor C1
After a predetermined time determined by the resistance and capacitance of the capacitor C11 has elapsed, the transistor Q turns on, and the transistor Q+
(Only h is turned on for a predetermined time. Since the motor rotation was in a clockwise rotation state, diode D1, transistor Q,
Since the motor 600 is short-circuited through the motor 600, the brake is applied to the motor and it stops rapidly. After the motor 600 stops, charging of the capacitor Ctt is completed and the transistor Q becomes -0FF, and the transistors Qt and Qt also become O.
Become FF. That is, in this state, while the half-press switch 5W13 is pressed, the variable resistor VR is pressed, and when the time is within a predetermined time determined by the capacitor C6, the half-press switch S is pressed.
Only while W, s t is ON, press switch 5 halfway again.
When W13 is pressed for longer than a predetermined time, motor soo#i rotates to the right only during the predetermined time.

By the way, when the back cover is open, the switches SW, , are ON, so the reference voltage applied to the (+) side of the comparator A2 is the switch SW, ? is lower than when it is OFF.

Therefore, for the same setting value of variable resistor VR, switch S
When W is ON, the output of comparator A2 is L.
The predetermined time until the switch SW1. is OF
F! , it is shorter than when it is. The reason for this is that, as will be explained later, it is necessary to make the timer time of the timer circuits VR and C6A longer than the time required to wind the film to the first gobo shooting position after closing the back cover, so the timer time is set in such a way. On the other hand, if the back cover remains open for a long time, if the half-press switch SW is turned on for a long time, the film will be wound onto the spool more than necessary, resulting in wasted film. consumption will occur.

This occurs because the user's push button operations cannot keep up with the spool winding speed, especially when loading film in a high speed winding state with the changeover switch SWo set to the b terminal side. However, it can also occur due to carelessness. Therefore, in order to avoid such a situation, when the back cover is open, switch SW is used to shorten the timer time, and switch S is set to 7'i0H to lower the reference voltage and shorten the timer time.
The timer time is shortened by QNing W u to lower the reference voltage. The timer time is set in the range ((()) in which the spool 29 in FIG. Therefore, in normal operation, the required amount of winding can be obtained by inserting the leading end of the film 28 into the take-up spool 29 and then continuing to press the push button 100 until the motor stops at a predetermined time set by a timer.

(1) -2 Operation when the back cover is closed (1) After the film 28 is reliably wound onto the spool 29 by the operation in -1, the camera back cover is closed, as described in the explanation of Fig. 1. The film is wound up to the shooting position of the first frame of the film. The operation is performed as follows.

When the back cover is closed, the back cover open/close switch SW1. is ON
, switches SW, 7 are turned OFF, and the hoisting limit switch SW5 remains ON. When the pushbutton 100 is pressed in this state, the half-press switches 3w, . . . turn on, transistor Q+z turns on, power is supplied to the circuit, and the motor 600 rotates to the right for the same reason as the operation in (i) -i. Even if the half-pressed switch SW, j is turned off, the positive feedback operation of the transistor QI2 causes the resistor R8 and capacitor C to
The ON operation of Q++ is maintained for a predetermined time determined by I2 (usually selected from about 20 seconds to several minutes), and power supply to the circuit is maintained.

Accordingly, the film is fed, and when a predetermined amount of film is fed as described in FIG. 1 and reaches the -hook-eye photographing position, the winding limit switch SW is turned OFF. As described in FIG. 1, the trailing curtain run completion switch SW4 is turned off when the camera is released and the shutter is charged by turning the motor 600 to the left. Since the mirror is lowered, the mirror lowering position switch SW is turned on. Therefore, since the output of AND gate G is held at L, OR gate G3 is turned off by turning off the winding switch SW.
becomes the output ore, AND game, G,,,OR
The output of the gamer atS becomes LK, and the right-handed rotation of the motor 600 is abruptly stopped and the film feeding operation is completed. NOR
Gate G. The output becomes H, and the transistor Qwe is turned on, so that the capacitor C0 of the timer circuit is set. While the film is being air-fed,
When the transistor Qza is OFF, the timer circuit consisting of the variable resistor VR3 and the capacitor 6 operates, but the motor 600
Since the variable resistor VR2 is set in conjunction with the variable resistor VR2 that sets the clockwise rotation speed of the motor 600, and since the empty feed amount is fixed at a predetermined amount by the film counter mechanism shown in FIG. The idle feed time is fixed in relation to VB2. Since the time required for the output of A2 to be reversed by C6 is set to be long, the motor is not stopped when the output of A2 is reversed to L during normal idle feed operation. In this case, the predetermined time is (1) −
This is longer than the predetermined time described in operation 1. Is it the switch SWl when the back cover is closed? is OFF
This is controlled by increasing the (+) side reference voltage of comparator A2.

If the film gets caught and stops midway, or if the blank feed operation cannot be performed due to a mechanical failure, use VR,
, the hoisting limit switch SW is set to O within a predetermined time by C6.
Since it does not become FF, the A output becomes LK, the motor stops, and the inverter INV. When the output of the OR gate cps becomes H and the output of the OR gate cps becomes H, the light emitting diode LED2 lights up to display a warning. In the operation (1) described above, the flip-flop (G? p c, ) (G2?
, G2+1) is not performed, so the exposure control described in the following (2) is not performed. The speed of the idle feeding operation at this time is arbitrarily selected by the speed switching lever 401 as described above.

(2) Operation during photographing (No.-1 Operation during normal continuous photographing) In the following explanation, it is assumed that the selector switch SW9 is set to the a terminal side. SW.

The state in which the terminal selects the b terminal side will be explained later. In this mode, the upper C side (OFF) of the SCC selector switch 8w is selected. The multiplex photography changeover switch SW is turned on since the normal photography mode is selected, and the output of the AND gate G1 is held at L. In addition, the mirror lowering position switch SWI is in the ON state when the mirror is lowering before being released, so the output of AND game is also L, and when the film empty feed is completed, the winding limit switch SW is turned on. , is also OFF, so OR
The output of the gate G3 becomes L and the output of the NAND gate G,
. And the output of inverter INV1 is H. When the pushbutton switch SW is turned on by operating the pushbutton 100 in FIG. 1, the output of the inverter INV2 becomes H and N.
Since the output of AND gate G3゜ is H, AND gate G4
The output of inverter INV becomes H, and the output of inverter INV changes from H to L. On the other hand, if the predetermined reset time by the time constant circuit CI+R has elapsed, the inverter I
NV, output is H1 or mirror stop switch SW? is the first
As explained in the figure, when the mirror before the release is in the lowered position, it is OFF, and the rewind switch 5W14 linked to the rewind bar 155 in FIG. 1 is OFF, and the rewind button switch S W.

Since it is ON, AND game game 18 + cs
The t output is high, and the NOR gate CSt output is high. AND game! Since all of the inputs are high, its output is high.

Further, as described above, the output of the inverter INV is also high. Therefore, after the pushbutton switch SW6 is turned on, the NAND gate G
The output of 6 is not L, so a flip-flop G is used.

G is inverted, and the output of the NAND gate is turned to H. The predetermined time by R2CtK is the flip-flop Gff+
Only the time required for reversing G11 is required, and N immediately after reversing.
The output of the AND gate game returns to H. When the output of the NAND gate becomes H, the inverter INVS becomes L, holding the output of the AND gate at L, and N
OR circuit circuit. The output becomes L. This turns off transistor Q+a, so VRs + Ca, A2
The timer circuit starts measuring time. At the same time, the output of the AND circuit S becomes H, and the transistor Q.

is ON, transistor Qt is ON, G4 is ON, and transistor Qt is connected via diode Dsk.

is turned on, transistor Q is held off. The output of AND gate CI4 is held at L, so its output is L;
Since the output of Game Game I6 is also LK, OR gate G
The output of transistor Q6.4 is L. Q? , QI is OFF'L. Transistor Q2. Q4 ON
Therefore, a current flows in the direction of Q, → motor 600 → Q4 in the motor 600, and at this time it rotates to the left, so the speed generator 601
also rotates to the left, and the generated voltage in that case is D3 → R6 because the side connected to the anode of diode D has positive polarity.
A current flows in the direction of →R1→D2, and when the voltage generated across resistor R1 reaches the voltage of R8, comparator A is inverted and transistor Q is turned on, thereby controlling the speed feedback to the left as described above. It is also carried out in

That is, the speed of the motor 600 is controlled so that a predetermined counterclockwise rotation speed is achieved at the partial pressure ratio of R, R, and the set speed in this case is sufficient to ensure control accuracy when electrically controlling the aperture value. It is controlled at a constant speed to maintain a sufficient speed and to keep the shirt release timing constant.

As the motor 600 rotates to the left, the shutter is charged and the mirror is raised as explained in FIG. Gate G,,G,
The output is still held at L. On the other hand, if the memory fixing switch SW, 8 is turned OFF, the OR gate G11 output and G7 output are H, so it becomes H, and this state is caused by the fact that the mirror goes up and the mirror stop switch SW, which will be described later, turns ON. , G, are reset and the output of G changes to L, the mirror lowering position switch SW remains unchanged.
It is held because I is OFF. The H level signal of the OR gate Gll is transmitted to the P terminal of the exposure control section 604. While the pt terminal of the exposure control section 604 is at H level, a known photometric value storage circuit in the exposure control section 604 operates, and specifically stores the photometric value of the photodiode PD, which is a light receiving element. That is, the photometric value is stored at the same time as the pushbutton switch 3w6 is turned on, and is held until the exposure is completed and the mirror 132 in FIG. 1 is lowered to a predetermined position.

When the mirror 132 in FIG. 1 rises to a predetermined position, the mirror stop switch SW is turned on, the output of the AND gate is kept at L, the output of the NAND gate G6 is kept at H, and the flip-flop G 1 + Ga is reset and the output of G7 becomes L. While the pushbutton switch SWa is turned on and the 07 outputs of the flip-flops G7 and Gs are H, the AND gate G1. The output can respond to the output of the aperture control signal terminal P2 of the exposure control section 604. In modes where aperture control is electrically performed, such as shutter priority mode and program mode, the P2 terminal changes from L to H when the aperture value reaches a predetermined aperture value based on the photometry memory value of the exposure control unit 604. , AND game, the output of 9 becomes H, so the transistor QI4 is turned on and the charge charged in the capacitor C7 is discharged through the aperture control magnet equalizer, so the aperture control mechanism described in the explanation of Fig. 1 is activated. operates to control the aperture to a predetermined value. Feedback of the aperture value for controlling the predetermined aperture value is performed by a variable resistor VR connected to the exposure control section 604. The voltage generated by the generator 601 due to left rotation of the motor 600 is determined by the exposure control unit 604.
is simultaneously applied to the aperture speed compensation input terminal P.

The reason for this is that there is a constant delay between the time when the aperture control magnet At, K is energized and the time when the aperture control mechanism actually locks, which is determined by the characteristics of the magnet, the inertia of the locking mechanism, etc. Because of the delay time and motor 60
This is because if the relationship with the rotational speed of 0 is not fixed and the compensation operation is not performed, the accuracy of the control value of the aperture will be impaired in the mode in which the aperture is electrically controlled. Especially motor 60
Since the motor 600 has a start-up characteristic of a finite speed until it is controlled at a constant speed due to the inertia of the drive mechanism including the rotor of 0, the relationship between the above-mentioned delay time and the rotational speed of the motor 600 is fixed in that region. This causes control errors. Further, its rise characteristics also vary depending on the voltage of the power source EB.

Therefore, in order to eliminate this influence, a voltage related to the speed of the motor 600 from the generator 601 is transmitted to the exposure control section 604 to perform a compensation operation for the aperture control. The compensation operation will be described later in the explanation of FIG. In a mode in which the exposure mode selection means in the exposure control unit 604 does not electrically control the aperture value, such as aperture priority mode or manual exposure setting mode, P2 is selected.
Since the output is held at L, the output of AND game B never becomes H, and therefore the aperture value is not electrically controlled.

Here, it is switched by operating a memory fixing member not shown in FIG. 1, and is turned off during normal photographing.

When the memory fixing switch 5W1a is turned on, the output of the OR gate G11 is held at HK, and the photometric value is continuously stored. In other words, before the pushbutton switch SW6 is turned on, the camera is pointed at the object for which the photometric value is to be stored, and the memory fixing switch SW+s k is turned on. By turning on the pushbutton switch SWa toward the camera, automatic exposure control is performed based on the stored photometric value rather than the photometric value of the subject. When the mirror rises to the predetermined position, the flip-flop G? + c, G? High output changes from H to LK,
When the mirror is in the raised position, the mirror stop switch SW7 is set to O.
While N is low, the AND gate S output is held at L, so the NAND gate G6 output is held at H.

Therefore, flip-flops G, , G, are inhibited from inverting when the mirror is in the raised position. When the G output of the flip-flop G changes from H to L, the motor 6
The counterclockwise drive of the motor 600 is stopped, and since the output of the OR gear G is L, the motor 600 is not driven clockwise, and the transistor Q is turned on for a predetermined period of time, causing the motor 600 to suddenly stop. Also flip flop G.

As the G output of Ga changes from H to LK, the output of the inverter rNV changes from L to H after a predetermined time by the time constant circuit R3+C8.

As the output of the inverter INV changes from L to H, the output of the AND gate ctt becomes H for a predetermined time determined by R4+C4, turning on the transistor Q+5e and transferring the charge accumulated in the capacitor C to the front curtain control. Since the discharge is caused through the magnet, the shutter front curtain 1 in Figure 1
15 starts and exposure 1 begins. time constant circuit C,
, R1 is generally set to the estimated time required for the motor 600 to stop completely even if the brake is applied, since the motor 600 will not stop immediately. This is to prevent the vibration of the motor 600 from affecting photography. Diode D1 connected in parallel to resistor R3
5. The diode DI4 connected in parallel to the resistor R4 is busy when rapidly charging the capacitors C8 and C4, and is irrelevant when the respective predetermined delay times are generated when discharging the capacitors C8 and C4. Simultaneously with the first curtain start operation by turning on the transistor Qxj for a predetermined time, the output of the inverter INV changes from H to L, and the output of the flip-flops G, o, G2 . G21 output from H, G2.
The output changes from H to L. At this time, the output of G12 does not change and is in the L state, so the transistor QCs is turned off. The front curtain start signal from the L to HK change of the NAND gate gate □ is transmitted to the input terminal P of the exposure control section 604, and a known shutter timer circuit within the exposure control section 604 is started.

When performing automatic exposure in aperture priority mode, shutter priority mode, program mode, etc., the shutter timer circuit controls the shutter time calculated based on the above-mentioned photometric memory value, and it is controlled by the shutter speed transmitted to the P terminal. Timing is started using the start signal as a starting point, and when a predetermined time measurement based on the calculated value is completed, a signal changing from H to L is outputted to the output terminal P4 as a trailing curtain start signal to the NAND gate G2°. Specifically speaking, the signal change at the P terminal is such that before the front curtain start signal is transmitted to P, the P output is held at LK, and when the front curtain start signal is transmitted, the P output changes to LK. At the same time, it changes from L to H, and when the timing of the shutter timer circuit ends T, the output changes from H to L to generate a rear curtain start signal, and after that, the L state generates a first curtain start signal again. is retained until In the manual exposure mode, the shutter timer circuit is operated at a shutter speed selected by a shutter speed setting member (not shown) in the exposure control section 604. Input terminal P of exposure control section 604.

The ON and OFF signals of the pushbutton switch SW6 are transmitted to the switch SW6.

When the selected second time is bulb in the manual exposure setting mode, the P4 output becomes H. When the front curtain start signal is transmitted to the input terminal P, which is unrelated to the shutter timer circuit, the P4 output becomes H.

At that time, if the large input pushbutton switch SW6 is OFF, the output terminal P4 outputs a trailing curtain start signal that immediately changes from KH to L because it is H. Also push button switch S
If W6 is ON, P, input is L, so P, output is held at H, and then any pushbutton switch SW6 is set to O.
At the time of FF, the Ps large input becomes H, and at that time, the P4 output outputs a trailing curtain start signal that changes from H to L.

When the trailing curtain start signal is generated from the output terminal P4, the output of the flip-flop G 20 + cwt is inverted and the NA
ND game! ”G2o is L to H1NAND gate G21
changes from H to L, and the Gt2 output changes to H for a predetermined time determined by the time constant circuits R and C8, and the transistor Qs5
turns on. Transistor QI! When ON, the charge accumulated in the capacitor C is transferred to the rear curtain control magnet,
Since the discharge is caused through the shutter rear curtain 115' in FIG.
starts and ends the exposure. When the rear curtain travel completion switch SW4 is turned ON by closing the rear curtain, the mirror lowering position switch SW is still OFF in this state, so G and the specific output become H, and the AND game is generated through the OR game G5ft. Set the output to H. Therefore, AND gate G14
Through t G15 , transistor Q6 is turned on, so motor 600 rotates to the right. While the output of the OR gate G is H, the output of the inverter INV is L, so the output of 06 causes the flip-flop G7. There is no possibility that Gs will be reversed and a left rotation signal of the motor 600 will be output. When the right turn start button of the motor 600 is pressed, as described in FIG. 1, in the first stroke of the right turn, the mirror is lowered and the aperture control mechanism is reset. When the mirror is lowered to a predetermined position by turning the motor to the right, the mirror lowering position switch SW is turned ON.
Therefore, the 02 output becomes LK, but before that, the hoisting limit switch SW is turned on as described in Fig. 1, so it becomes G.

The output is held at H, and the right rotation of motor 600 continues. When the mirror is completely lowered, film winding starts, but as described in Fig. 1, the multiple winding stop switch SW is turned on just before winding starts, but since it is not in multiple shooting mode, multiple shooting is switched. The outputs of switch 5WtVC and G8 are held at LK and are unrelated to the operation. Since the winding limit switch SW is turned ON and the output is held high, the motor 600 continues to rotate clockwise and winds the film. When a predetermined amount of film has been wound, the winding limit switch S W sk'! , OFF and G.

The output becomes L, the right rotation of the motor is stopped, and the film winding process is completed. When the motor rotates to the right, the variable resistor VR, switch SW is used as described above.

The right rotation speed is selected by When the film winding is completed and the output becomes G and LK, the output of the inverter INV1 becomes H. Also, since the mirror is lowered, the mirror stop switch SW7 is OFF, so it is G, and the specific output is H, so it is NAN.
D gate G6 can respond to changes in the output of AND gate G4. The SC selector switch SW is on the C side (OF
NAND gate game for F). The output is completed when winding is complete.
When the signal changes from L to HK due to
Changes from to H. As before, the predetermined time G determined by the time constant circuits R,,C, and the specific output L are absent, and the flip-flop G? +G11 is reversed and outputs a motor left rotation signal, so while the pushbutton switch SWa is ON, the aforementioned motor left rotation (mirror rise, aperture reduction) → motor stop → shutter control → motor right rotation (mirror return) , aperture open) → motor clockwise (film winding) → motor counterclockwise (mirror raised, aperture stopped) → etc. The cycle is repeated, and -0 continuous shooting is performed. push button switch SW
When 6 is turned off, the output of inverter INV is L, so the 04 output is held at L, and the motor is stopped when the film winding is completed and the next shooting sequence does not start, so continuous shooting is possible. Canceled.

Next, the operation when the selector switch SW9 is on the b terminal side, that is, the highest speed mode is selected, will be described.

Push button switch SWI! Before G211 is turned on, the output of G211 is L, the output of G25 is held at H, the flip-flop G211 v G27 is forcibly reset, and the output of G26 is L% and the output of G2g is also L. Therefore, transistor Qtv is OFF. When the pushbutton switch SW6 is turned on, the G29 output is held at HK and the forced reset operation is canceled. Also, as described above, the flip-flops G, G are reversed, and the motor 600
rotates to the left to raise the mirror and control the diaphragm, but at this time the output of the NAND gate 5 remains in the H state and does not change because the H level pulse output of t is still likely to occur. Therefore flip flop G! 6yG2
The state of A does not change and G26 output L1G□ is output.

Transistor Ql? is OFF. Therefore, the motor speed during left turning is controlled at a constant speed by speed feedback. When the mirror has finished rising, the switch SWy is turned on to turn on the shift flip-flop G.

G, is reset and the motor stops, and R,,C
After a predetermined time period due to , the output of AND game , , becomes H for a certain period of time. The front curtain of the shutter is started by the H output of AND gate G12, and exposure is started.
The output of D gate G, 5 is L, flip-flop 0.
21f t G27 is set and G26 output is H
become. Exposure mode output signal terminal P of exposure control section 604
6 is L when a mode in which the aperture is electrically controlled such as shutter priority mode or program mode is selected, and the output is L when the aperture is electrically controlled such as in aperture priority mode or manual exposure setting mode. In the uncontrolled mode, the output is HK.

Therefore, in the shutter priority mode and program mode, the output of the AND gate G26 is
It is held at L regardless of the output state of the AND gate G28 in aperture priority mode and manual exposure setting mode.
The output of is determined depending on the output state of NAND gate G26. If aperture priority mode or manual exposure setting mode is selected, flip-flop c2a
, GH is set and the NAND gate G26 outputs H, the output of the AND gate G2g is HK, and the transistor Q+7 is turned ON. By turning ON the transistor Q17, speed feedback control for rightward and leftward rotation of the motor 60G is no longer performed.

As described above, when the shutter rear curtain is controlled and exposure is completed, the motor 600 rotates to the right to perform operations such as lowering the mirror and winding up the film.

At this time, since the switch SW selects the highest speed on the b terminal side, speed feedback control is not performed and control is performed at the highest speed depending on the voltage of the power source EB. When the winding is completed, if the pushbutton switch SW6 is turned on at that time, the flip-flops Gy and Gg are set again as described above, and the motor 600 is rotated to the left to photograph the next frame.

Transistor Ql? When turned on, constant speed control is not performed and the vehicle turns left at maximum speed. Thereafter, while the pushbutton switch SW6 continues to be pressed and continuous photographing is performed, the transistor Q17 is kept in the ON state and speed feedback is not performed, so that the motor 600 rotates at the highest speed. If the pushbutton switch SWa is turned OFF, this continuous shooting will be stopped when the film winding is completed, and the N
Since the output of AND gate ate becomes L, flip-flop G26. G27 has been reset N A N
The outputs of D gate G 26 + G t8 are both L1 transistor Ql? turns OFF. Switch SW again
If ak is turned on, speed feedback control is performed when the motor rotates to the left in the first Gobo photography, but speed feedback is not performed when the motor rotates in subsequent continuous photography, and a state in which the motor rotates at the highest speed can be obtained. In shutter priority mode and program mode, the P6 output of the exposure control unit 604 is L, so CtS is held at L, so Q
l? remains until 1, which is OFF, so constant speed control is performed by speed feedback every time the motor turns left, but the maximum speed is always achieved when turning right.

As mentioned above, only when the highest speed continuous shooting mode is selected in aperture priority mode or manual exposure mode, constant speed control is performed when the release is rotated to the left at the first release of continuous shooting, and during subsequent continuous shooting, rotation to the left is performed. The speed is highest when turning right. The advantage of doing so is that the release timing of the first frame of continuous shooting is given by the camera user, so it is desirable to keep it constant regardless of the mode, and the timing of subsequent continuous shooting is determined by the camera device, so It is not necessary to control the left rotation at a constant speed, and by shortening unnecessary time, high-speed continuous shooting can be obtained. In the shutter priority mode and the program mode, the diaphragm is electrically controlled when the motor rotates to the left, so the left rotation speed must be controlled to a predetermined left rotation speed in order to ensure accuracy of the diaphragm control. Therefore, when turning left, constant speed control with speed feedback is always performed.

Note that the NAND gate G29, which generates a reset signal for the flip-flop G26+at'r, is controlled by the 08 output of the flip-flop G7C8. This is because the push button SW6 is turned OFF at any point during continuous shooting to stop shooting, but if that timing is when the motor is rotating to the left, it will stop when the shooting of that frame is finished and the film winding is completed. Therefore, transistor Q+ is turned on.
The prohibition of speed return when the motor turns to the left is continued during the left turn, and when the left turn is completed, the flip-flop G2
．． , G2. This is to generate a reset signal.

12)-2 Operation during normal Gobo photography In this mode, the SC changeover switch SW is set to the S side. The multiplex shooting switch SW is set to normal shooting mode, so it is turned on and the output is set to C, G, and L.
is maintained. In this mode, the push button switch S is synchronized with the completion of film winding as described in (2)-1.
The other operations are the same as (2)-1 except that the re-release operation related to turning on W6 is not performed. That is, since the SC selector switch SW8 is on the S side (ON), the aSO output is held at H. The G4 output is not related to the output of G and only responds to the pushbutton switch SW6, so when the GS output and INV output are H, the pushbutton switch SW is OFF.
When N is input, the 04 output changes from L to H, and the G6 output changes to R.
2, C2 generates an output for a predetermined period of time, flip-flops Gy and Gsk are inverted, and the above-mentioned release operation is started by rotating the motor to the left. Even when exposure control and film winding are completed, the G4 output remains at H as long as the pushbutton switch SW6 is kept ON.
Only when the G4 output changes from L to H, the G6 output changes to L for a predetermined period due to R, C, but after that, HK is held, so the 06 output does not become low. In order to release the camera again, C2 can be charged by turning the pushbutton switch SW 1-degree OFF, and if the pushbutton switch SW is turned ON after recharging C7, the AND gate G3, inverter INV, ( 7) When the output is H, that is, if the motor is not in the clockwise rotation state, the NAND gate G6 output changes to L and the release is re-released, so that each time the push button switch S We f is turned on, a photo is taken one by one. In the frame photography mode, the SC selector switch SW8 is ON, so the output of the NA and ND gates G25 is held at H, so the flip-flop G26 is
+c2□ remains in the reset state and is not inverted, so the transistor Q1□ is always OFF. Therefore, even when the selector switch SW selects the highest speed mode on the b terminal side, constant speed control is performed by speed feedback for left rotation of the motor. The reason for this is not only because of its effect on modes that electrically control the aperture, but also because even in modes where the aperture is not electrically controlled, the release timing for Gobo photography is determined by the camera user each time, so it remains constant in all modes. This is because things are desirable. Therefore, the rotational speed of the motor 600 is controlled according to independently set speeds when the motor turns left and right.

(2) Operation during -3 multiplex continuous shooting In this mode, the SC selector switch SW is set to the C side (OFF
) is selected, and since the multiplex shooting selector lever 171 in FIG. maintained in the state.

It is assumed that the selector switch SW has the a side selected. Since the multiplex photography changeover switch 5W2 is OFF, a multiplex warning circuit 08C602VCH level signal is transmitted to the light emitting diode LID.

The 08C602 outputs a blinking signal to warn that it is in multiple shooting mode. The LED is preferably arranged in the viewfinder as is known in the art. When film winding is completed before release, the mirror lowering position switch SW1 is ON, and the multiple winding stop switch SW is ON.

The trailing curtain run completion switch SW is ON, the winding limit switch SWs is OFF, and the mirror stop switch SW is OFF. Therefore, each gate G 1 +at G3 output is L
It is. Inverter ■NX' gate G 5 + G
3゜The output is H, so by turning on the pushbutton switch SWa, the Ga output is for a predetermined time, and the flip-flop G is turned on.
, , G are inverted and output a motor left rotation signal. As described above, the mirror lift and aperture control is performed by turning the motor to the left, and when the mirror rises to a predetermined position, the mirror stop switch S is activated.
W? becomes ON. As a result, the flip-flop G Y
* G 11 is reset, the motor stops, shutter exposure starts, and when the rear curtain of the shutter is closed, at and G are turned on by turning on the rear curtain run completion switch SW4.
The output is H, so it is G, and the output is H. The simulator 600 turns right to lower the mirror and reset the aperture control mechanism.
When the mirror is lowered to a predetermined position, the mirror lowering position switch SW is turned on and the G2 output becomes L, but the multiple winding stop switch SW3 is turned off until a predetermined phase just before film winding starts. G, the output is H, and the right rotation of the motor is therefore maintained. When the film reaches a predetermined phase just before the start of film winding, the multiple winding stop switch SW is turned on, so that the output becomes G and the output becomes L. The clockwise rotation of the motor is stopped by the G1 output, and the inverter INV...
Since the output of gate Gso changes from L to H, (2)
At that time, the pushbutton switch SWa is ON as in the case of -1.
If it is, the G4 output will change from low to H, so R,
, C, for a predetermined period of time, the G6 output becomes L, the flip-flop G'rGs is inverted, outputs a motor left rotation signal, and the release operation is performed again. Therefore, the push button switch SW.

While fishing with the button ON, film transfer is not performed and multiple shots are taken repeatedly, and the push button switch SW is turned OFF.
When F is pressed, the film stops in the phase state just before winding, and if the pushbutton switch SW6'' is turned ON again at 1t, multiple exposures are performed as many times as possible. Hoisting stop switch S
O before W3 turns off the trailing curtain run completion switch SW.
Since FP K becomes G, the output becomes H once and generates a motor clockwise rotation signal, but before that, the flip-flop G? *G
The left turn signal of 11 is output, and the inverter INV is turned off during that time.
.

Therefore, the motor right rotation signal caused by AND game is not transmitted to the subsequent motor control circuit. Since LK is restored before flip-flop G?+08 is reset by turning ON K of SWY, the generation of a temporary clockwise rotation signal of G1 that occurs while the motor is rotating counterclockwise has no effect on the multiplex photography sequence. To return the multiplex photography mode to the normal photography mode, simply return the multiplex photography switching lever shown in Figure 1 to the normal photography position after completing the multiplex photography, and then return to the normal photography mode as described in the explanation of Figure 5. Lifting limit switch SW
When , is turned on, the G output becomes H and a motor clockwise rotation signal is generated, so that the film is wound. When the predetermined amount of film has been transferred, the winding limit switch SW is turned OFF.
FF and the motor stops rotating to the right. In addition, in Figures 1 and 13, the shooting is stopped once in multiple shooting mode, and Q■
+Q1t*R8* When the multiplex photography switching lever is switched to the normal photography mode after the operation of supplying power to the circuit by CI2 for a predetermined period of time has been completed, the power supply to the circuit has stopped, so the motor does not turn clockwise and the push button 10 (If you press l and turn on the half-press switch 5WI3 to start power supply to the circuit, the film transport described above will be carried out. In this state, the multiplex shooting switching lever 171 is returned to normal shooting to continue shooting. Sometimes, even if push button 100 is pressed, the camera does not release and starts from the film winding sequence, so the expected release timing until the shutter runs is incorrect, or the SC changeover switch SW6
When it is on the S side (ON), a problem may occur where the release does not occur.

To improve this point, the multiple shooting switching lever 171 is set to the half-press switch 5Wls' regardless of the operation of the push button 100.
In the process of returning to normal shooting mode, add a mechanism to temporarily turn on the switch, or add a separate switch that is connected in parallel with the half-press switch SW, and use it in the process of returning to normal shooting mode. This problem can be solved by adding a mechanism that temporarily turns it ON temporarily. Automatic exposure control and manual exposure control, which are not described in detail, are performed in the same manner as described in (1)-1.

In the above operation, the constant speed control set by speed feedback is performed individually for each of the clockwise and counterclockwise rotations of the motor, similar to the operation when SW -1 is on the a terminal side (2).

The operation when switch SW is on the b terminal side is (2)-1
Similar to the operation when the switch SW is on the b terminal side, in aperture priority mode and manual exposure setting mode, the motor rotates counterclockwise to keep the release timing constant during the first exposure when the switch SW is turned on. Constant speed control is performed, and the subsequent clockwise rotation has the highest speed because there is no speed feedback, and the subsequent left and right rotations for continuous multiple exposure are all controlled at the highest speed without speed feedback. Ru. In shutter priority mode and program mode, constant speed control is always performed when turning left.

(2) -4 multiplex - Operation when photographing frames This mode is obtained by setting the SC selector switch sw, f: to the s side (ON) in the state of (2) -3.

In this mode, the output of the NAND gate G is held at H, so the release operation is similar to (2)-2. Switch SW, ON
Yoshi flip flop G? *Even if the GI is reversed and the camera release is started by turning left and right, and the push button switch SW is kept on, the camera will still be in a state where exposure has been completed, the mirror will be lowered, and the film is about to be transferred. Stop automatically. To release the camera again, turn the pushbutton switch SW6'k OFF and then ON to perform multiple shooting. To return from multiple photography to normal photography, as described in (2)-3, the multiple photography switching lever 171fi in FIG. 1 may be returned to the normal photography position. This multiplex
In the Komazu type, the switch SW is for the same reason as (2)-2.
The left rotation of the motor is always controlled at a constant speed, and the right rotation is controlled at an arbitrarily selected speed, regardless of the selected state of exposure mode such as the exposure mode such as the exposure mode such as the exposure mode such as the shooting priority mode or the aperture priority mode.

0) Operation at the end of the film The operation at the end of the film is performed during the film transport sequence in the normal photographing mode.

That is, because the film cannot be pulled out from the cartridge at the end of the film during film transport, the film cannot be transported by the predetermined amount, and the winding limit switch SW is turned OFF.
Since it remains FF, variable resistor VR, capacitor C6
After a predetermined elapsed time corresponding to the winding time selected by comparator A, the A2 output becomes L, and the output of AND game 13 + G14 is held at L to stop the motor, and the inverter INVI.

becomes H and the output of OR gate G18 becomes HK, so the light emitting diode LED2 for warning display lights up to display a warning that the motor has automatically stopped.

(4) Operation during film rewinding This operation is as described in FIG. 1 and operates according to the following procedure. Rewinding is started by first pressing the rewind button 7 and then moving the rewind lever 155 to the rewind position. By pressing the rewind button 7, the rewind button switches SW, , are turned off, and when the rewind lever is moved to the rewind position, the film end switches SW, l are turned off if there is film left. Therefore, the 00 output becomes H. Gl? The output is L because the inverter INV, , outputs L.
K, the rewind warning circuit 603 does not operate and outputs to the OR gate G18. G24 output is SWl.

is turned on, so it is L. The G23 output is L because the inverter INV, . . . is LK because the film end switch SW, , is OFF. G.
6 When the output becomes H, 01, the output also becomes H and the simulator starts rotating to the right to rewind the film. Also, since the G,6 output is H, the output of the NOR gate G32 is held at L, and therefore the G, output is also held at L, so the flip-flop G32 is held at L.
Since t and Gs are held in a reset state, no motor left rotation signal is output in this state.

Inverter INV+1 does not immediately rewind the film even if film rewind is accidentally set while the mirror lower position switch SW1 is OFF, that is, while the mirror is raised and exposure is being performed. After the exposure is completed and the mirror is lowered, a signal is generated to provide a prohibition signal for starting film rewinding by rotating the motor clockwise.

The L output of NOR gate G32 during rewinding is G, and the output is L.
Q is held at the same time as film rewinding starts.
! a is held ON and VB2. The operation of the timer circuits C, , A is stopped even if the motor is rotating. Also, while the rewind switch SW, , is ON, D1. The power supply to the circuit is maintained by turning on Q++t'' through the circuit.

When the film rewind is completed, the film end switch S
Since W+a turns on, the 016 output becomes L, while G31
Since becomes H output, 'Cs2 output remains L, so G,
is L output, flip-flop G? , C8 are held in the reset state, the motor is stopped, the G23 output is HK, and the LED2 lights up to warn that the rewinding has been completed. When the rewind lever is set to rewind without pressing the rewind button, the G16 output is L, and the Gl?
Since the output becomes H, the rewind warning circuit 603 operates and causes the LED 2 to flash to warn that rewinding is impossible.

When rewinding the film, there is no need to turn on the fully pressed switch SWa, so it is normally 0FFIC, and therefore flip-flop G2. .

C2t is in a reset state and transistor Q! 7
is OFF. Also, switch SW6 remains ON and flip-flop G2e + G28
Even if is set, the G32 output is L when rewinding.
Therefore, the G211 output is also L, and the transistor Ql? is OFF l. Therefore, the motor speed during rewinding is the speed arbitrarily selected by the speed switching operation lever.

In the embodiment of the present invention shown in FIG. 12, speed feedback control is performed by speed detection using a DC speed generator for constant speed control of the motor, but the present invention is not limited thereto; for example, It is obvious that the speed feedback can be controlled by known detection means that detects the rotational speed of the motor in a passive manner using a photoelectric element, a magnetic sensor, a mechanical contact, or the like. Further, in the embodiment of the present invention, an example in which constant speed control is performed in an analog manner is shown, but such a method uses power transistors Q1 .
Q2, QI Q? A large thermal burden may be required for the camera, and a high power transistor must be used with good heat dissipation, which becomes a problem when the camera is made smaller.

To solve it, QI Q2 QI Q? It is preferable to turn ON and OFF in a pulse manner and control the ON/OFF duty ratio, that is, in a pulse width modulation manner, since thermal generation can be minimized and a small transistor can be used.

FIG. 13 shows an embodiment of the exposure control section 604 shown in FIG. 12, particularly the aperture speed correction circuit. In FIG. 13, the same symbols are given to the parts shown in FIG. 12.

A logarithmic compression circuit 610 converts the photometric current from the photodiode PDK into a logarithmically compressed voltage. Memory circuit 611
is a circuit that stores the photometric value from the logarithmic compression circuit 610 when the H output of the aforementioned OR gate Gll is transmitted through the P terminal. The arithmetic circuit 612 uses the outputs of the memory circuit 611, the film sensitivity setting circuit 613, the lens preset aperture value and lens aperture value detection circuit, and the shutter speed setting circuit 615 as arithmetic inputs, and uses the mode selector circuit 617. It performs arithmetic processing according to the selected mode, and outputs a display output for the exposure adjustment value to the display circuit 616, an output for specifying the shutter release time controlled by the shutter timer circuit 618, and an output for specifying the aperture value for aperture control. do. The mode selector circuit 617 outputs an H level to the P terminal when the aperture priority mode or manual exposure setting mode is selected, and outputs an L level when the program mode or shutter priority mode is selected. 619 is a throttle speed correction circuit P, which amplifies the voltage generated by the speed generator transmitted through the terminal A10 r R1 (l tR
An in-phase amplification circuit consisting of multiple circuits and an arithmetic circuit 612
A II r R12tRll + R14+ which inputs the control aperture value voltage and A16 output voltage transmitted from
It is constituted by a differential amplification circuit configured by R15. The control aperture value voltage output from the arithmetic circuit 612 is in a relationship such that as the control target aperture value becomes the small diameter aperture value, the output voltage increases. R3 is the reference voltage, VR,
is a variable resistance associated with the movement of the aforementioned throttle control lever, and is a constant current sink source. The resistance value of the variable resistor VR1Fi decreases as the aperture becomes smaller, so the voltage generated at the connection point between the variable resistor VR and the constant current sink source I3 also decreases as the aperture becomes smaller. will rise. A12 is a comparator, and when the output of the throttle speed correction circuit 619 and the voltage across the variable resistor VR are equal to or increase, its output becomes H and outputs a throttle stop signal via the pt terminal. Aperture speed correction circuit 619
As the speed of the motor increases, the output of the arithmetic circuit 612 also decreases. That is, the control target aperture value of the arithmetic circuit 612 also becomes a voltage corrected on the open diameter side according to the motor speed. Since the variable resistor VR changes from the aperture open side to the small diameter closed side, the aperture stop signal from the comparator A12 reaches the control target aperture value output from the arithmetic circuit 612 as the motor speed increases. He will be released earlier than that. The reason is that the higher the motor speed is, the earlier the throttle locking signal is output, which compensates for the locking delay of the throttle locking mechanism mentioned above, so accurate throttle control is performed. .

In this embodiment, each mechanism in the camera is driven by a single motor, but the present invention is not limited to this, and can also be applied to a camera in which each mechanism in the camera is shared and driven by multiple motors. Possible 0 For example, when the first motor is used to advance the film and the second motor is used to drive the aperture and mirror, it is possible to change the voltage applied to the first and second motors separately. good.

〔Effect of the invention〕

Also, in this example, the mirror stop switch sw? Either the electric brake is applied to the motor 600 immediately after the switch SW7 turns ONL/, or if the switch SW7 turns ONL/ near the beginning of the mirror rising due to the layout of the switch SW The motor 600 may be configured to apply an electric brake. In this case, the constants of the timers R4 and C4 for activating the front curtain control magnet MgO may be changed to provide a longer delay time. According to the present invention, in a camera in which the motor is operated prior to opening and closing the shutter, the shutter opening operation is started at a time when the influence of rotational vibration of the motor disappears, so that shutter accuracy is stabilized and camera shake can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of the drive mechanism of an embodiment of the camera of the present invention, FIG. 2 is a schematic perspective view of the sprocket mechanism shown in FIG. 1, and FIG. 3 is the same as that shown in FIG. FIG. 4 is a schematic perspective view showing the mirror mechanism in a raised state; FIG. 5 is a schematic perspective view of a modified example of the multiple exposure mechanism; FIG. 6 is a schematic perspective view of a modified example of the multiple exposure mechanism; A chart showing the relationship between the operation and the switches etc. that control it, Figure 7 is a schematic diagram of the camera of the above embodiment, Figure 8 is a plan view of a part of Figure 7, and Figure 9 is the above implementation. A schematic diagram showing an example of a battery pack used in the example; Figure 10 is a schematic diagram showing an example of a battery pack with higher power than the one in Figure 9; Figure 11 is a schematic diagram showing an example of the battery pack shown in Figures 9 and 10. FIG. 12 is a circuit diagram of the above embodiment, and FIG. 13 is a detailed circuit diagram of the exposure control section of FIG. 12. [Explanation of symbols of main parts] 115-...River...Shutter front curtain 115°...Shutter rear curtain 600...Motor 604... ...Exposure control section SW6...Release switch SW7.
...Mirror stop switch INV6...
・・Inverter R3・・・・・・・・・・・・Resistance C3・・・・・・・・・・・・Capacitor←

Claims (1)

[Scope of Claims] A release means that generates a release signal, a shutter that opens and closes to expose the film, a group of mechanisms that operate between a release preparation state and a state where the shutter starts to open, and the mechanism group. an electric drive means for driving the motor; a phase detection means for detecting that the movement of the mechanism group has reached a specific phase and generating a signal; and a phase detection means for starting the electric drive means in response to a signal from the release means. , a control means for stopping the electric drive means in response to a signal from the phase detection means, and a delay device for opening and closing the shutter after a certain period of time has elapsed after receiving the signal from the phase detection means. . A motor drive camera, wherein the shutter is opened and closed after a predetermined period of time has elapsed after the electric drive means has stopped.