JP2501360B2 - Film feeder - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a film feeding device in an electric film winding camera.

[Conventional technology]

In recent years, in electric film feed cameras, a so-called spool drive camera is rotated by a motor, and the motor is stopped by detecting that a sprocket or photoelectric means has fed the film for a predetermined length. There are many types.

By the way, in a camera in which the old sprocket is driven at a constant angle to feed a certain amount of film, and the spool is set to excessive winding so that the film does not sag, the friction mechanism absorbs the excessive winding of the spool, so it is used for winding. The loss of energy used was large.

On the other hand, in the spool drive camera described above, the spool rotates only a necessary minimum, so that there is almost no energy loss. For this reason, most electric film feed cameras, which must use the motor efficiently with limited battery energy, employ spool drives.

[Problems to be Solved by the Invention]

However, in this type of camera, it is necessary to set the film measuring device so that the film leader portion is taken up by an appropriate amount when the film is loaded, and the spool is stopped for the first frame. Of course, from the second frame, the film length corresponding to one screen is measured and the spool is stopped. Therefore, if you try to confirm that the film is securely wrapped around the spool with the back cover opened with this type of camera, the film will inevitably be fed from the previous setting of the measuring device to the first frame. Will end up. After that, if the back cover is closed, the first to second frames have already been exposed, and at most the third frame can be used for shooting, resulting in a large amount of wasted film.

On the other hand, in order to prevent this phenomenon, the film is not fed at all when the case back is opened.

Generally, in cold climates, the film becomes less flexible and pops off the spool, or the tip is broken, or the film rolls well on the spool when loading the film cut from the long length by yourself. There are cases where it does not work. However, with the above configuration, it is not possible to reliably wind the film around the spool while checking the state of the film. Accordingly, it is an object of the present invention to provide a camera which is an efficient spool drive type and which can be wound around a spool with a leader portion of a certain length while visually confirming if necessary.

[Means for solving the problem]

In order to solve the above-mentioned problems, a film feeding device according to the present invention includes an operation member (100) that is manually operated to release a shutter, and an operation signal generation unit that generates an operation signal while the operation member is operated. (SW13), spool (29) for winding the film, motor for driving the spool, and back lid opening detection means (SW12) for detecting the open state of the camera back lid and generating an open signal A film movement amount regulation means (VR3, C6, A2) for generating a signal for regulating the movement amount of the film, an opening signal from the back lid opening detection means and an operation signal from the operation signal generation means. When both are received, the motor is energized to start driving the spool, and when the release signal is received and the signal of the film movement amount regulation means is received or the operation signal is turned off. When it is lost, the motor is short-circuited to stop the drive of the spool, and when the back cover of the camera is closed and the opening signal disappears, a control means (604) for invalidating the film movement amount regulating means. Provided.

[Operation] With the above configuration, the film feeding device according to the present invention is
Since the film movement amount regulation means for rotating the spool by a slight amount is provided, the spool is stopped by the film movement amount regulation means when the back cover is opened, and when the back lid is closed, the leader portion of the film is closed. From the first to the first frame, the motor that drives the spool is stopped by the so-called idle feed scale, and the motor that drives the spool is stopped by the film length scale for the second and subsequent frames. be able to.

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

Details of each unit will be described below according to the sequence of the shooting preparation operation.

First, when the key for locking the back cover is removed by a known means for loading the film 28, the back cover can be opened, and the part 1 of the back cover is moved to the lower left in FIG. To do.

Then, the back cover interlocking lever 3 follows the part 1 of the back cover about the shaft 4 by the biasing force of the spring 2 and rotates counterclockwise. As a result, the rewind release lever 5 fixed below the shaft 4 is also turned counterclockwise, and the one end 6a of the rewind holding lever 6 is pushed. For this reason, the lever 6 is rotated rightward to release the rewinding state, and the relationship between the rewinding holding lever 6 and the rewinding button 7 which has been in the raised position is the state shown in FIG. The rewinding state and its cancellation will be described later.

When the rewind release lever 5 is turned counterclockwise, its tip 5a is released from contact with the back cover open / close switches Sw12 and Sw17.
Sw12 is off and Sw17 is on. Therefore, it is possible to rotate the motor 600 to operate the spool 29 and the sprocket 49 even when the back cover is open, but this operation will be described later.

A pin 3a is planted at the other end of the back cover interlocking lever 3, and one arm portion 9a of a hoisting limit lever 9 that rotates around a shaft 8 is rotated with its left turn, and this lever 9 is turned to the right. Let A hoisting limit switch Sw5 is provided behind the arm portion 9a, and is turned on when the hoisting limit lever 9 is turned to the right. This switch Sw5 is a motor control circuit (13th
When the switch Sw5 is ON, the motor 600 rotates in the direction opposite to the arrow in the figure when the fully-press switch Sw6, which is located in the upper part of FIG. 1, is turned ON, that is, to the right. It has a rotating circuit configuration. Further, when the hoisting limit lever 9 is turned to the right, the hook 9b at the tip of the other arm moves to the left in FIG. 1, so that the engagement with the notch 12a of the hoisting limiter 12 is disengaged. 12 can be rotated.

When the back cover interlocking lever 3 is rotated counterclockwise, the number of tabs 13
Turns right. That is, the pin 13c planted at one end of the locking claw 13 is pushed leftward in the figure by the interlocking lever 3 which rotates counterclockwise, and the locking claw 13 counteracts the urging force of the spring 16 and causes the shaft 15 to move. Turn right around. As a result, the locking portion 13 of the number-of-sheets locking claw 13
The a is retracted to the left in the figure from the position in which it is engaged with the pallet counting wheel 17 fixed to the lower end of the shaft 18. Then, the ratchet wheel 17, the shaft 18 to which the ratchet wheel 17 is fixed, the idle feed cam 19 and the number plate 20 fixed to the shaft 18 are integrally rotated left by the biasing force of the spring 21. This rotation ends until the pin 22 implanted below the number plate 20 comes into contact with the stop plate 23 provided on the substrate (not shown). At this time, the letter S on the number plate 20 directly faces the index 24, indicating that the number counter has been reset.

Although another feed claw 25 can be engaged with the numerometer ratchet wheel 17, its tip 25a is pushed to the left front in the figure by the tip 13b of the knurling claw 13 that rotates clockwise. Therefore, the feed claw 25 is rotated counterclockwise around the shaft 27 against the biasing force of the spring 26, and the claw portion 25b is retracted from the engagement position with the numerator ratchet wheel 17. Therefore, the feed claw 25 does not prevent the ratchet wheel 17 from turning left. The above is the operation when the case back is opened. When the case back is opened, the film is loaded, but the motor 600 does not rotate during this time.

Next, the operation from the loading of the film until the first frame is ready for shooting, that is, the film feeding operation by the film feeding system will be described. 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 Sw13. At this time, the hoisting limit switch Sw5 has already been turned on, and the motor control circuit, which will be described later, detects this and the motor 600 starts rotating (clockwise) in the direction opposite to the arrow in the figure as described above. By this rotation, the pinion 32 and the worm 58 fixed to the motor shaft 31 are rotated clockwise, and the gear 33,
59 and 60 respectively rotate (counterclockwise) in the direction opposite to the arrow.
The rotation of the pinion 32 is transmitted to the first gear 33 and the second pinion 34 integrated with the first gear 33, the second gear 35 and the third pinion 36 and the third gear 37 integrated with the second gear 35, and the third gear 37. Is rotated (counterclockwise) in the direction opposite to the arrow in the figure.
The reduction gear train from the pinion 32 to the third gear 37 is for obtaining the torque required for film feeding from the small motor 600.

A film feed plate 39 is fixed below the shaft 38 to which the third gear 37 is fixed, and rotates in the direction opposite to the arrow in the figure like the gear 37. And the feed plate 39 at the time of this left turn
The projection 39a and the hook portion 40a of the film feeding claw 40 are engaged with each other. The rotating shaft 41 of the film feeding claw 40 is the fourth gear 42.
The fourth gear 42 also starts to rotate in the same direction because it is planted in the. Therefore, the spool 29 is rotated (counterclockwise) in the direction of the arrow in the drawing through the known spool friction mechanism 43, and the film 28 is wound around the spool 29.

On the other hand, the rotation of the fourth gear 42 is the fifth gear 44, the sixth gear
Although it is transmitted as 45, it does not directly rotate the sprocket shaft 47. The situation will be described with reference to FIG. As described above, the rewinding state is released by turning the rewinding holding lever 6 to the right, but at the end of the rewinding of the film used last time, generally, the sprocket shaft 47 which is planted above the sprocket shaft 47 is generally used. The upper pin 47a and the groove 45a provided in the upper portion of the sixth gear 45 are out of phase with each other. Therefore, although there is a biasing force of 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 with the rotation of the sixth gear 45, and the sprocket pin 48 planted in the middle of the shaft 47 also does not rotate. Therefore, the rotation of the sprocket 49, which is only allowed to move up and down relatively to the pin 48 through the groove 49a, is not governed by the sixth gear 45. Therefore, at this time, the film 28 is moved by being wound up on the spool 29, and the perforation (not shown) is engaged with the teeth 49b of the sprocket 49 to drive the sprocket 49 and the sprocket shaft 47. .

However, as is well known, when the same drive source is used for interlocking, the spool 29 is set so as to take up more film 28 than the sprocket 49. Normally, the sprocket upper pin 47a and the groove 45a are in phase with each other at a certain point in time and are engaged with each other, and the rotation of the sixth gear 45 normally determines the feed amount of the film 28. This embodiment also operates in a similar manner.

Referring again to FIG. 1, the count-up of the sheet counter will be described. A sprocket upper gear 50 is fixed above the sprocket shaft 47, and is constantly meshed with the piezo gear 51. The shaft 27 is planted at an eccentric position on the gear 51, and while the sprocket shaft 47 is rotating, that is, while the gear 51 is rotating via the gear 50,
The feed claw 25, one end of which is connected to the shaft 27, reciprocates substantially in the left-right direction in FIG. At this point, the back cover has already been closed and a part 1 of the back cover interlocking lever 3 is rotated clockwise.
Is rotated counterclockwise, and the engaging portion 13a of the engaging claw 13 and the numerator ratchet wheel 17 are brought into the engageable position as shown in FIG.

With the counterclockwise rotation of the number counting pawl 13, its tip 13b moves to the right in FIG. 1, so that the tip 25a of the feed pawl 25 can move to the upper right in the figure, and the urging force of the spring 26 is exerted. As a result, the feed claw 25 is rotated to the right, and the claw portion 25b is brought into a position at which the claw portion 25b can be engaged with the lap counter 17. For this reason, although not described in detail because it is publicly known, the gear 51 is rotated by the rotation of one frame of the film 28 of the sprocket 49 to reciprocate the feed claw 25,
The ratchet wheel 17 is rotated right by one tooth by the claw portion 25b. As a result, with the film feeding, the number of discs
20 rotates from "S" to the position where "1" faces index 24.

In the meantime, the hoisting limiting board 12 mounted on the sprocket shaft 47 rotates a plurality of times. At that time, since the winding-up limiting lever 9 is biased in the counterclockwise direction by the spring 52, the hook 9b is rotated counterclockwise around the shaft 8 so that the hook 9b comes into contact with the outer periphery 12b of the limiting plate 12 and the notch 12a and the hook. When the 9b's face each other, they may be engaged with each other, and the film feeding after that may be interrupted. Despite this situation, the protrusion 19a of the idle feed cam 19 that operates integrally with the number-of-sheets board 20 to allow the idle feed up to the first frame has the protrusion 9a of the arm 9 of the hoisting limit lever 9.
It abuts c and prevents it from turning left. However,
Since the contact is released just before the number "1" on the number board 20 directly faces the index 24, the film 28
After a predetermined amount has been sent, the lever 9 turns counterclockwise to the hook 9b.
Falls into the notch 12a, and film feeding is mechanically blocked. While the total number of sheets 20 indicates "S" to "1",
The hoisting limit is inactive. Therefore, the winding-up limiting switch Sw5 pressed by the arm portion 9a of the lever 9 is turned off, the power supply to the motor 600 is cut off by the action of the control circuit 185 described later, and the film idling is completed here.

Here, note the function of the winding-up limit holding lever 53. The lever 53 is biased in the clockwise direction around the shaft 54 by the spring 55, and the pin 53 planted on the lever 53 is urged.
Only when the b is in contact with the concave portion 12c provided on the outer periphery of the hoisting limiting plate 12, the tip 53a can lock the tip 9d of the hoisting limiting lever 9. Tip of lever 53
53a is sized to lock the tip 9d of the lever 9 only when the lever 9 is rotated to the right sufficiently large.

The case where the winding-up limiting lever 9 makes a large right turn means that the pin 3a and the arm 9a on the back cover interlocking lever 3 are opened when the back cover is opened.
And the intermediate lever 56 described later.
When the pin 9e on the limiting lever 9 is pushed at its end by the left-handed rotation, Since the right turning angle of the limiting lever 9 is small when the outer peripheral portion 12b of the hoisting limiting plate 12 and the hook 9b are in contact with each other, the tip end 53a is the tip end 9a.
Do not engage d. Therefore, the lever 9 can be turned leftward without being blocked by the hoisting limit holding lever 53 from the state where the hook 9b is in contact with the outer peripheral portion 12b, and can fall into the notch 12a of the limiting plate 12. . During this idling, the diaphragm 79, the front curtain 115 and the rear curtain 115 'of the shutter and the holding frame 132
Neither of the quick return mirrors held by is driven. Each of these will be described later in detail.

Next, shooting and subsequent winding operation will be described.

When the push button 100 is pushed down again in FIG. 1, the half push switch Sw13 is turned on. This starts energization of a part of the circuit described later.

The light passing through the lens 78 is reflected by the quick return mirror held by the holding frame 132 and enters the light receiving element PD. The output of the light receiving element PD is introduced into the exposure control circuit and calculated.
Next, when the push button 100 is pushed further deeper, the full-press switch Sw6 is turned on, and the photometry result by the light receiving element PD is stored by the exposure control circuit.

Further, when the switch Sw6 is turned on, the following other operation is started. That is, at this time, the hoisting limit switch Sw5
Is OFF, the motor control circuit causes the motor 600 to start rotating (counterclockwise) in the direction of the arrow in FIG. Therefore, the pinion 32 and the worm 58 fixed to the motor shaft 31 rotate. The pinion 32 has the first gear
33, and on worm 58, 7th gear 59 and 10th gear 60
Since and always mesh with each other, they start rotating in the direction of the arrow at the same time.

First, a system (hereinafter, abbreviated as "film feed system") which is interlocked with the engagement between the pinion 32 and the first gear 33 will be described. The rotation of the motor shaft 31 is converted into appropriate rotation speed and torque by the reduction gear train, and the third gear 37 is rotated (clockwise) in the direction of the arrow in the figure. As the third gear 37 rotates to the right, the shaft 38 to which it is fixed also rotates, and the rotation restricting plate 61 and the film feed plate 39 fixed to this also both move to the first position.
Rotate (clockwise) in the direction of the arrow in the figure. On the outer periphery of the rotation restricting board 61, a mirror raising locking claw 62 is urged by a spring 63 in the left-handed direction and is in contact therewith, and the restricting board 61 is turned rightward by a predetermined rotation angle from the state shown in FIG. When the control panel 61 is locked
The rotation of the regulation board 61 is blocked by locking 61a. as a result,
In a diaphragm drive system, a mirror drive system, and a shutter charge system, which will be described later, this functions as a stopper. Similarly, the film feed plate 39 fixed to the shaft 38 is at a position where the projection 39a and the hook portion 40a of the film feed claw 40 are engaged at the start of photographing, but since the feed plate 39 is rotated right, the film feed plate 39 is not engaged. The rotation is not transmitted to the feed claw 40 when it is released. Therefore, in this case, unlike the case of the film idling described above, since the fourth gear 42 and below do not rotate, the film is not fed.

The pin fixed on the third gear 37 during the above right-hand rotation
37a pushes the arm 65a of the hoisting restriction release lever 65, and the spring 66
This lever 65 is rotated counterclockwise around the shaft 67 against the action of. However, the pin implanted on the other arm of the release lever 65
Since 68 moves in the direction away from the one end 56a of the intermediate lever 56, it does not affect the lever 56. Therefore, the limiting lever 9 is not rotated by the lever 56,
Winding is restricted.

Next, a system (hereinafter abbreviated as “aperture drive system”) that is interlocked with the engagement of the worm 58 and the seventh gear 59 will be described. Along with the rotation of the seventh gear 59 in the direction of the arrow in FIG. 1 (right rotation) by the left rotation of the motor 600, the shaft 69, the eighth gear 70, and the narrowing cam 71 to which they are fixed are all integrated together. Start rotating in the direction. However, since the rotation regulation plate 61 in the film feeding system is restricted from rotating clockwise by the mirror raising locking claws 62, the motor shaft 31 is rotated through the gear train.
Rotation is restricted, and the shaft 69 can also rotate right by only a predetermined rotation angle.

When the shaft 69 starts to rotate clockwise from the state shown in FIG. 1, the tip 71a of the squeezing cam 71 causes one end 102a of the holding release lever 102.
However, the lever 102 cannot rotate (counterclockwise) around the shaft 73 embedded in the aperture holding lever 75. This is because the arm portion 102b of the lever 102 is in contact with the pin 74 planted in the diaphragm holding lever 75. Therefore, the lever
102 is united with the diaphragm holding lever 75 and counterclockwise against the urging force of the spring 76 and rotates counterclockwise around the shaft 77.

In this embodiment, it is assumed that the diaphragm interlocking lever 79 that interlocks with the diaphragm mechanism of the lens 78 receives a downward biasing force in the drawing. This lever 79 is the tip 80a of the aperture restriction lever 80.
Is being prevented from descending at that time, and the aperture is open at that time. The hook portion 75a and the pin 81 planted in the aperture regulating lever 80 are disengaged by the left hand rotation of the aperture holding lever 75, and the aperture regulating lever 80 moves the aperture movement lever 79 and the spring 82.
By the urging force of, the tip 80a can move in the descending direction (clockwise around the shaft 84). As a result, thereafter, the throttle control lever 80 is rotated clockwise from the state shown in FIG. 1 through the contact between the pin 83 planted at another position and the throttle cam 71 to gradually reduce the lift amount. Following the cam 71, it turns clockwise around the axis 84, and the diaphragm is narrowed down.

The aperture reduction amount is 1 for the resistor 302 and the regulation lever 80.
It is measured by the brush 303 provided at the end 80c, and when the appropriate resistance value calculated based on the previous measurement result, the set shutter speed, the film sensitivity, etc. is reached, the exposure control circuit described later works. The coil 85 is energized. Then, since the attraction force of the armature 88 which has been attracted to the yoke 87 by the permanent magnet 86 is temporarily reduced, it loses the biasing force of the spring 89, and the shaft 91 together with the diaphragm locking claw 90 to which it is attached. Turn left around. And locking claw 90
Since the claw portion 90a of the locks the enlarged gear train 93 composed of the gears 93a, 93b, 93c, etc., the aperture regulating lever 80 integrated with the gear 93c is stopped and the aperture value is set to obtain the proper exposure. It The enlarged gear train 93 is installed to increase the resolution of aperture value setting and to increase the accuracy.

Next, during this period, a system that interlocks with the engagement of the worm 58 and the tenth gear 60 (hereinafter abbreviated as "shattering charge system")
Will be described with reference to FIG.

With the counterclockwise rotation of the motor 600, the tenth gear 60 starts rotating (counterclockwise) in the direction of the arrow in the figure at the same time as the clockwise rotation of the gear 59. Then, the shaft 105 fixed to the shaft 105 and the eleventh gear 106 fixed to the shaft 105 also rotate counterclockwise. As a result, the first
The 12th gear 107, which meshes with the 1st gear 106, turns clockwise,
Front curtain charge gear 109 that is integrated through the shaft 108
Also turn right.

The gear 109 starts to mesh with the front curtain sector gear 110 in the middle of its right rotation, and while the meshing state continues for a certain section, the gear 110 rotates counterclockwise around the shaft 112 until it reaches a portion where teeth are not formed. Then, the engagement between the front curtain charge gear 109 and the front curtain sector gear 110 is disengaged, and thereafter only the front curtain charge gear 109 continues to rotate right. The right rotation of the gear 109 is the rotation control board 6 in the film feeding system.
It stops upon the engagement between 1 and the mirror raising locking claw 62.

On the other hand, the front curtain sector gear 110, which has been disconnected from the charge gear 109, returns to the position shown in FIG. 1 by the biasing force of the spring 111. Thus, first, the front curtain sector gear 110 rotates counterclockwise around the shaft 112 erected on the front curtain arm 113, and at this time, the front curtain arm 113 provided coaxially with the gear 110 is provided at one end of the sector gear 110. He pin 114
The hook 113a is pushed by the leading blade claw 116.
To the position where it can be locked. The sector gear 110 is additionally provided with a pin 117, and pushes the spring 118 as the gear 110 rotates counterclockwise. By the biasing force of this spring 118, the leading blade claw 11
6 is right-handed and is attached to this claw 116
Press 119 against the yoke 120. After this, the permanent magnet 121
Due to the attraction force of the spring 120, the yoke 120 and the armature 119 counter the biasing force of the spring 122 to maintain the attraction state. In such a state, the hook 116a of the claw 116 and the key portion 113a of the arm 113 are held against each other against the leading-curtain drive spring (not shown), and the preparation for the leading-curtain running is completed. The front curtain auxiliary arm 123 cooperates with the front curtain arm 113 to support the front curtain 115.

As for the rear curtain, the same operation is performed from the operation of the twelfth gear 107 rotating in the direction of the arrow in FIG. 1 to the completion of preparation for running the rear curtain, and therefore, the portions corresponding to the front curtain charge mechanism have the same numbers. Is indicated with a dash and detailed description is omitted.

The operation performed as described above is an example of a known shutter charge operation, and this shutter charge is performed mainly during the time of narrowing down. In other words, this shutter charge fulfills the deceleration effect for accurately controlling the aperture.

In the process of narrowing down the above-mentioned aperture, the eighth gear
Since the 70 and 9th gear 124 are always meshed, the shaft 125
Is also turning left. This axis 125 is for driving the reflex mirror.

With the counterclockwise rotation of the shaft 125, the first arm 126 fixed to the shaft 125 also rotates counterclockwise. The shaft implanted at the tip of this arm 126
127 also rotates counterclockwise around the axis 125, and the tip 128a of the second arm 128 rotatably attached to the axis 127 moves to the right from the state shown in FIG. Axis 1 planted here on mirror holding frame 132
The 31 and the third arm 130 are rotatably connected, and the mirror holding frame 132 is rotatable about an axis 64.
Returning to the clockwise rotation of the second arm 128 again, when the tip 128a moves to the right, the claw portion 133a at the tip of the leaf spring 133 fixed to the third arm 130 moves to the second arm 128 as shown in FIG. Because of being caught, the arm 128 and the third arm 130 are in an engaged state, and thereafter, they act as one arm. This acts as a rod, and the first arm 126 serves as a crank with the shaft 125 as the center of rotation, and the shaft 127 serves as a crank pin to push up the mirror holding frame 132. At this time, the enclosure 126a
Since the opening is provided in the shaft, the movement of the shaft 129 is not restricted. That is, it is pushed up by the half rotation of the shaft 125. The mirror holding frame 132 starts to turn left about the shaft 64, and eventually the arm 132a provided integrally with the mirror holding frame 132 and the mirror lowering position switch Sw1 are released from contact, and the switch Sw1 is turned off. The switch Sw1 is turned off during the counterclockwise rotation of the shaft 125, and as described above, the shutter charge operation is also performed during this period.

 Now let's get back to Shyatsuta in the middle left.

Another arm 113'a is integrally provided on the trailing curtain arm 113 ', and the same arm is provided by the operation of charging the shutter.
113 'turns counterclockwise around the shaft 112', the contact between the trailing curtain completion switch Sw4 and the arm 113'a is released, and the switch Sw4 is turned off.

The rear curtain running completion switch Sw4 is turned off before the mirror lowering position switch Sw1 is turned off. The functions of these two switches will be described later.

 I will return to the mirror system again.

In the crank mechanism described above, when the shaft 125 is rotated leftward by half a turn, the first arm 126 causes the second arm 128 and the third arm 13 to rotate.
8th gear 70 and 9th gear 124 so that they are substantially in line with 0
The gear ratio of is set. That is, this time is the time when the rotation restricting plate 61 and the mirror raising locking pawl 62 in the film feeding system are engaged.

FIG. 4 shows the state when the mirror is raised and finished. In this state, the arm 132a provided integrally with the mirror holding frame 132 turns on the mirror stop switch Sw7 when the ascent of the frame 132 is completed.
To do. This signal causes the motor 600 to stop under the action of the control circuit. The motor 600 has a slip mechanism (not shown) and is capable of slipping when the rotation is stopped by an external force. This is known as an accessory mechanism for driving a camera with a motor and is a common sense, so it is not shown.

If the state of FIG. 4 continues for too long, there is a concern that the second arm 128 and the third arm 130, which are aligned, may buckle in the direction in which the shaft 129 moves to the right in the figure. In order to deal with this, it is desirable that the leaf spring 133 be provided with a biasing force that abuts against the back surface of the second arm 128. By doing so, a frictional force is generated between the back surface of the second arm 128 and the surface of the leaf spring 133, so that this buckling can be prevented.

As described above, the aperture was reduced 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 electric operation of the shutter.

When the leading curtain coil 135 is energized at an appropriate timing, the attraction force of the permanent magnet 136 is temporarily weakened, and the attraction force of the spring 137 loses the attraction between the armature 119 and the yoke 120, causing the leading blade claw 116 to rotate to the left. Then, the hook 116a releases the engagement of the hook portion 113a of the front curtain arm 113, so that the front curtain 115 travels by the force of the front curtain drive spring (not shown). When the trailing curtain coil 135 'is energized when the next set shutter speed is obtained, the trailing curtain 115' runs in the same manner as in the case of the leading curtain. The trailing-curtain switch SW4, which has been OFF in the previous state of charge near the beginning or the end of the trailing-curtain running, comes into contact with another arm portion 113'a of the trailing-curtain arm 113 ', thereby turning on.

This signal causes the control circuit, which will be described later, to act immediately or to give an appropriate time lag, and this time the motor 600 starts rotating (clockwise) opposite to the arrow in the figure. Then, the mirror returns, 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 turns left, the rotation is transmitted to the eighth gear 70 and the ninth gear 124, and the shaft 125 and the first arm 126 start turning right. Along with this, the second arm 128 and the third arm 130 are pulled downward in FIG. 1, and the mirror holding frame 132 descends from the raised state shown in FIG. Then, when the first arm 126 faces downward, the surrounding portion 126a comes into contact with the shaft 129, both are aligned coaxially, and the holding frame 132 does not move back to the state of FIG. That is, when the mirror returns, the axis 125
The holding frame 132 is lowered by the rotation (clockwise rotation), and thereafter, the holding frame 132 is in a state of not moving at all.

No matter how many times the shaft 125 turns to the right in this state, the arm 126
And the arm 128 rotate together about the shafts 125 and 129 via the pin 127, and the second arm 128 causes the leaf spring 133 to move by the taper portion 133b (FIG. 4) provided behind the claw portion 133a of the leaf spring 133.
Even if it comes into contact with, the third arm 130 does not rotate and the mirror holding frame 132 does not move because the claw portion 133a displaces and escapes.

When the holding frame 132 rotates right about the axis 64, the mirror stop switch SW7 switches from on to off, and the mirror lowering position switch SW7 switches from off to on, contrary to the counterclockwise rotation.

At the initial stage of the return operation of the mirror, the pin 127 abuts on the one end 306a of the reset lever 306 to rotate the lever 306 about the shaft 307 counterclockwise against the biasing force of the spring 308, so that the other arm 306b of the lever 306 is rotated. Moves upward in the figure and presses the magnet reset spring 73, so that the armature 88 is attracted to the yoke 87. Therefore, the engagement between the engagement portion 90a of the engagement claw 90 and the gear 93a is released, and the gear train 93 can rotate.

Next, regarding the opening operation of the throttle, as the gear 59 rotates counterclockwise, the throttle cam 71 also rotates counterclockwise, but a portion with a constant lift amount is provided, and after the engagement between the locking portion 90a and the gear 93a is released, the lift is lifted. Increase the amount gradually. Therefore, the pin 83 is pushed up and
80 turns left and raises the lever 79, so the diaphragm of the lens 78 is opened. When the lever 80 is rotated counterclockwise, the urging force of the spring 76 causes the diaphragm holding lever 75 to rotate clockwise, and the hook portion 75a of the diaphragm holding lever 75 rotates to the pin
Since 1 is locked, the open state of the diaphragm is maintained. It should be noted that as the throttle cam 71 rotates counterclockwise, its tip 71a lifts the end portion 102a of the holding release lever 102, but at this time, the lever 102 only rotates clockwise against the spring 141, and the diaphragm holding lever 75 rotates counterclockwise. There is no. Therefore, no matter how many times the squeezing cam 71 turns counterclockwise, the squeeze is kept open.

The enlarged gear train 93 also rotates with the left side of the aperture regulating lever 80, but at this time, the claw portion 90a of the aperture locking claw 90 is not in the state of locking the gear 93a. In this way, the motor 600 rotates clockwise after the exposure to rotate the shaft 69 counterclockwise to return the mirror to the shooting optical path, return the aperture to the released state, and then keep the state, and continue the right rotation. Is configured to be possible.

Next, the operation of the shutter charge system during this period will be described. When the tenth gear 60 starts to rotate (clockwise) in the direction opposite to the arrow in the figure with the clockwise rotation of the motor 600 after exposure,
Leading curtain charge gear 109 turns left, leading curtain sector gear 1
When engaged with 10, the gear 110 is rotated clockwise against the action of the spring 111. However, pin 1 planted in gear 110
The front curtain arm 113 does not move at this time, because 14 is the direction away from the front curtain arm 113. Similarly, the rear curtain arm 113 'does not move.

After that, the leading curtain charge gear 109 and the leading curtain sector gear 1
When the engagement with 10 is disengaged, the front curtain sector gear 110 is rotated counterclockwise by the urging force of the spring 111 and returns to the position shown in the figure. Similarly, the rear-curtain sector gear 110 also returns to the left by the action of the right-turn rear spring 111 '. In this way, the shutter charge system also has a structure in which the right rotation of the motor 600 after exposure can be performed any number of times.

Next, the operation of the film feeding system will be described. After the exposure, when the motor 600, that is, the pinion 32 is rotated clockwise, the third gear 37 is rotated counterclockwise through the reduction gear train. At this time, the pin 37a planted in the third gear 37 also moves accordingly, and pushes the arm portion 65a of the winding-up restriction release lever 65, so that the lever 65 turns right.

Along with that, a pin planted on the lower surface of the other end of the lever 65
68 pushes the arm 56a of the intermediate lever 56, so that the lever 56a
Turns left. As a result, the other arm portion 56b of the lever 56 pushes the pin 9e planted at one end of the hoisting limit lever 9, so that the lever 9 turns right and the hook 9b at the tip and the notch of the hoisting limiter 12 are cut out. The engagement with 12a is released, and the hoisting limiting plate 12 can rotate. That is, the winding restriction can be reliably released by driving the motor 600. Along with this, the tip 9d of the lever 9
Is locked to the tip 53a of the hoisting restriction holding lever 53, and the hoisting restriction released state is held.

At the same time when the third gear 37 rotates counterclockwise, the rotation restricting plate 61 starts to rotate counterclockwise from the position where it is locked by the mirror raising locking claw 62, and the film feed plate 39 also rotates in the same direction. Then, as shown in FIG. 1, the projection 39a of the feeding plate 39 and the film feeding claw 4
When the hook portion 40a of 0 is engaged, the fourth gear 42 starts counterclockwise. When the gear 42 rotates, the spool 29 rotates in the arrow direction 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 engagement between the groove 45a and the sprocket upper pin 46 causes the sprocket shaft to rotate.
47 also turns left. Therefore, the film 28 progresses.

Shortly after the film starts to move, the maximum outer diameter portion 12b will come into contact with the pin 53b planted on the hoisting limit holding lever 53 in place of the convex portion 12c of the hoisting limit board 12. The lever 53 rotates counterclockwise around the shaft 54 by the action of the spring 55, and unlocks the tip 9d of the lever 9. That is,
As a result, the hoisting restriction release holding state is released. Therefore, the lever 9 turns counterclockwise by the action of the spring 52, and the hook portion 9b comes into contact with the maximum outer diameter portion 12b of the limiting plate 12.

After this, the notch 12a is opposed to the pin 53b, but the shape of the pin 53b is round and the tip end 9d of the hoisting limit lever 9 prevents the hoisting limit holding lever 53 from turning a predetermined amount to the right. Pin 53b due to being restricted
Does not fit into the notch 12a and lock the rotation of the hoisting limiting plate 12.

When the winding restricting plate 12 rotates so that the notch 12a faces the hook 9b of the winding restricting lever 9, both mesh with each other and the restricting plate 12 cannot rotate, and further winding does not proceed. This completes the winding of one frame of film. At the same time, the winding limit lever 9 that turns counterclockwise
Since the arm portion 9a of the motor is displaced to the right in FIG. 1, the hoisting limit switch SW5 is turned off, and the motor control circuit detects this and stops the clockwise rotation of the motor 600.

During this time, the sprocket upper gear 50 and the sprocket gear 51, which are fixed to the sprocket shaft 47, continue to rotate. As the feed claw portion 25 moves to the left in FIG. Feed the ratchet wheel 17 by one tooth,
The advanced scale of the number plate 20 is opposite to the index 24. On the other hand, when the feeding claw 25 is returning to the right, the locking portion 13a of the number counting latch claw 13 prevents the number counting ratchet wheel 17 from being reversed. Further, during the film feeding, the diaphragm drive system, the shutter charge system and the mirror drive system are all idle.

The above is the description of the operation relating to shooting and subsequent film feeding. Next, in order to take a picture, the push button 100 may be pressed again, and at this time, the above sequence is repeated.

Next, the rewinding operation after the filming of one film is completed will be described. When the rewind button 7 is pushed upward, the sprocket shaft 47, which is constantly urged downward, rises and the one end 6b of the rewind holding lever 6 is pushed by the urging force of the spring 139.
It goes under the stepped portion 7a and keeps the sprocket shaft 47 in the raised position.

When the rewind holding lever is turned counterclockwise, the rewind button switch SW15 which has been on until now is turned off. The function of this switch SW15 will be described later.

Due to the rise of the shaft 47, the sprocket upper pin 47a
Escapes upward from the groove 45a of the sixth gear 45, and the sprocket 49 and the sprocket shaft 47 can freely rotate independently of the sixth gear 45 and the gears 44 and 42 interlocked with the sixth gear 45.

On the other hand, since the sprocket upper gear 50 and the sprocket shaft 47 are integrated, when the shaft 47 is raised, the gear 50 is also in the raised position, and the conical shaped portion 50a provided on the gear 50 rewinds the interlocking first lever. Rotate 150 counter to spring 151 and rotate counterclockwise about axis 152. Axis of this lever 150
Similarly, a rewind interlocking second lever 153 is fixed to 152, and the tip 153a of the lever 150 moves leftward in FIG.

Next, turn the rewind lever 155 about 90 ° clockwise,
The rewinding cam 157, which is integrated with the shaft 156, also rotates by the same angle, and the rewinding shaft 158 that is urged downward moves up by this cam 157. The shaft 158 has a pin 158a and an elongated hole 159a.
A rewinding fork 161 is provided at the upper end of the pulley 159 so as to be vertically movable via a pulley 159, and when the shaft 158 rises, the fork 161 can be engaged with a spool of a cartridge (not shown). When the cam 157 is rotated to the right, the rewind switch SW14 is pushed and turned on. This signal causes the motor 600 to start clockwise rotation by the action of the control circuit, and the film feed plate 39
Rotates counterclockwise, and the engagement between the feed plate 39 and the film feed claw 40 is soon released. In other words, when the rewind button 7 is pressed and the tip 153a of the lever 153 moves to the left, the winding of all the films is completed, and in most cases, the film is disabled before the last one frame is wound. Although the projection 40b of the film feed claw 40 is not necessarily located at a position facing the tip 153a of the second lever 153, if the film feed plate 39 is turned counterclockwise by the above rewinding operation, the projection 40b will be within one rotation.
b is pushed by the tip 153a of the lever 153, the hook portion 40a is displaced to the right in FIG. 1, and the engagement with the projection 39a of the feed plate 39 is released.

On the other hand, since the third gear 37 and the rewinding gear 163 are always meshed with each other, when the gear 37 rotates left, the shaft 164 and the first pulley 165 to which it is fixed rotate right. First pulley 165
A belt 166 is stretched between the second pulley 158 and the second pulley 158 with tension applied by a slack eliminating roller 167. Therefore, when the first pulley 165 is turned clockwise, the second pulley 1
The 58 also rotates in the same direction, and the vertical groove 159a provided on the top of it
And the pin 158a is engaged, the rewind shaft 159 to which the pin is attached also rotates. Therefore, the spool of the cartridge (not shown) is rotated through the rewinding fork 161 to rewind the film.

At this time, the sprocket 49 can be freely rotated in the reverse direction as described above, but the spool 29 can be rotated in the reverse direction 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 in contact with the film and was rotating was no longer pressed by the film 28, so it was displaced forward in the figure by the urging force of the switch SW16, and the roller was installed. The lever 802 is turned clockwise about the shaft 803, and the switch SW16 is turned on.

 Therefore, the control circuit works to stop the motor 600.

After that, when the rewind lever 155 is returned to the position shown in FIG. 1,
The rewinding fork 161 is lowered and the rewinding switch SW14 is also turned off. In addition, because of the curling power of the film 28,
Alternatively, a reverse rotation preventing claw 189 is provided to prevent the gear 42 from rotating during rewinding. This completes the rewinding.

 After this, open the case back and take out the cartridge.

Next, the operation during multiple exposure will be described. Since the camera is always stopped in the state where the film feeding is completed, the operation of commanding multiple exposure is performed before giving the first exposure. When the multiple exposure lever 171 is rotated clockwise, the shaft 172 and the multiple lever 173 are also integrally rotated and the tip 173a of the lever 173 contacts the pin 174.

The lever 173 is the chest 65b of the hoisting limit release lever 65 when turning clockwise.
In order to push, the lever 65 is counterclockwise rotated against the spring 66 and held in that position by a mechanism not shown. Therefore, the arm portion 65a of the release lever 65 is retracted from the position where it can be engaged with the pin 37a planted in the third gear 37. Therefore, the lever 9 is not rotated rightward via the levers 65 and 56.

Further, the right rotation of the lever 173 releases the multi-identification switch SW2 that has been in contact with the lever 173 until then, and the switch SW2 is switched from the on state to the off state. The function of the switch SW2 will be described later.

When the multiple exposure command is issued in this way, the winding limiting plate 12 cannot be rotated even after the exposure (the completion of the trailing curtain) and the right rotation of the motor at the predetermined rotation angle (the mirror return stroke). Therefore, the right rotation of the motor 600, that is, the left rotation of the gear 37 is mechanically blocked at the time when the film feed plate 39 and the film feed pawl 40 are engaged, and the inertia of the motor 600 prevents the film feed from continuing. This is a phenomenon different from the photographing operation. That is, at the time of shooting, the pin 37a rotates the lever 65 clockwise in the middle of the mirror, thereby rotating the lever 9 clockwise via the lever 56, and the hoisting limiting plate.
The winding limit lever 9 has been released from the locked state.

For energizing the motor 600, the pin 37a provided on the third gear 37 rotates the multiplex switch interlocking lever 176 counterclockwise about the shaft 177 to turn on the multiplex stop switch SW3, and the control circuit for detecting this action. You will be refused by. At that time, the engaging portion 39a of the feed plate 39 and the hook portion 40a of the feed plate 40 are engaged.

In the above-mentioned normal shooting mode, the rear curtain switch SW4 is turned on by the action of the control circuit in relation to the operation of the shutter.
Then, the motor 600 starts to rotate clockwise, and the hoisting limit switch SW5 is turned on once the mirror is restored. When the film feed is completed, the motor 600 is turned off. However, in the multiple shooting mode, the switch SW5 remains off even when the mirror is restored.
When the switch is OFF and the switch SW3 is ON, the motor 600 is stopped by the action of the control circuit. Thus, the first exposure is completed.

Then, the second exposure is carried out. In this case, the multiple exposure lever 171 is manually turned counterclockwise to return it to the original position before pressing the release button 100, or by a method known in connection with the first exposure. When turned to the left, the hoisting limit release lever 65 is turned to the right by the urging force of the spring 66 and returns to the position shown in the figure, and the operation described in detail above is performed. That is, after the second exposure is completed, the film 28 is fed by one frame and stopped. The situation is exactly the same for multiple exposures of triple exposure and above. It is sufficient to return the lever 171 to the original position before pressing the button 100 for the final exposure.

Here, if the photographer forgets to manually return the multiple lever 171 before the last exposure of the multiple exposure, the film is not sent even after the last exposure, so the next shooting is not performed on a new screen. Instead, unintentional re-exposure will be performed on the multiple-exposure screen.

Therefore, FIG. 5 shows a modification in which the returning operation of the multiplex lever 171 is performed not before the final exposure of the multiplex exposure but after it.

A cam 651 is fixed below the shaft 172 that is integral with the multiple lever 171. When the multiple lever 171 is rotated clockwise, the cam 6
51 pushes one arm 652a of the lever 652 from the side. Therefore, the lever 652 is rotated counterclockwise around the shaft 653 against the biasing force of the spring 654. The cam 651 further turns left and gets over the lever 652. Since the lever 652 is no longer interfered with by the cam 651, the lever 652 is rotated right and returned to the position shown in the figure, and is held at that position. At this time, the lever 173 rotates the lever 65 counterclockwise to move its arm 6
5a is retracted from the rotation path of the pin 37a in FIG.
The shaft 653 is planted in the lever 655, but the lever 655 is biased in the counterclockwise direction by the biasing force of the spring 657, so that the lever 655 is not rotated by the counterclockwise rotation of the lever 652.

However, after the final shooting of the multiple exposure, the multiple lever 171
When turned left, the cam 651 tries to turn the lever 652 rightward by catching the tip of one arm 652a of the lever 652 and pressing it.
However, the lever 652 cannot rotate clockwise because it abuts the pin 655a of the lever 655, and this pressing force causes the lever 655 to rotate clockwise around the shaft 656.

A pin 658 is planted at the tip of one arm of the lever 655, and the pin 658 can contact the lever 56 described in FIG. 1, so the lever 56 rotates counterclockwise, which is also described in FIG. 1. The hoisting limit lever 9 also turns clockwise in conjunction with it.

At this time, the winding-up limit switch SW5 shown in FIG. 1 is turned on, so that the circuit operation starts the film feeding. That is, the screen after the multiple exposure is moved because the film 28 is wound around the spool 29, and the next unexposed screen stops facing the aperture not shown. The end of the film feeding is the same as that described in the past, and will not be described again.

 This is the end of the description of multiple shooting.

It should be noted that this mechanism can be used for photographing in a situation where it is difficult to make a film winding sound. That is, before the shooting, the multiple lever 171 is turned to the right to prevent the film winding from being performed immediately after the exposure, and when the winding sound is allowed, the lever 171 is rotated to the left to perform the film winding. be able to.

The relationship between the operation of each system and the switches that limit the operation is summarized based on FIG. The metal switch SW6 is on when the diagram shows a high level and is off when the diagram shows a low level. The motor 600 shows a left-handed rotation when the diagram is above the reference line indicating a stop, and a right-handed rotation when the diagram is below. The diagram of the resistor 302 shows its resistance level. The coil diagram of the diaphragm control magnet 85 shows the current value. The diagram of the mirror holding frame 132 shows rising and falling. The diagrams of the mirror down position detection switch SW7 and the mirror stop switch SW7 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 charge direction, and the reference line is the traveling completion position. The same applies to the shutter rear curtain 115 '. The coil diagram for the first curtain magnet 135 shows the current. This also applies to the coil 135 'for the rear curtain magnet. Rear curtain running completion switch SW4, multiple hoisting stop switch SW3, hoisting limit switch SW5, and film rewinding end switch SW16
In each of the diagrams, the high level indicates on and the low level indicates off.

Here, the photographing sequence will be summarized according to the time chart of FIG. When the subject is determined when the film counter indicates "1" and the switch SW6 is turned on, the motor 600 rotates counterclockwise and the diaphragm drive system and the shutter charge system are driven. In parallel with this, the mirror drive system is driven to raise the holding frame 132 from the observation position to the photographing position.
When the holding frame 132 moves up, the switch SW7 turns on and the motor 600 stops. Subsequently, the front curtain 115 and the rear curtain 115 ′, which had been charged for exposure, traveled, and at this time the magnet
The exciting currents 135 and 135 'are turned on.

When the trailing curtain 135 has finished traveling, the switch SW4 is turned on, which causes the motor 30 to start rotating to the right. As a result, the mirror holding frame 102 is lowered and the diaphragm is opened. The motor 600 continues to rotate rightward and drives the hoisting system to feed one film. During this time, none of the diaphragm drive system, the shutter charge system and the mirror drive system is driven. The right rotation of the motor 600 is stopped by turning off the switch SW5. After shooting all frames, press button 7 and press pin 47a.
And the groove 45a are disengaged, the connection between the motor 600 and the hoisting system is disconnected, and the rewind coupling 161 is engaged with the cartridge. At the time of rewinding, the switch SW14 shown in FIG. 1 is turned on to start rewinding, and the motor 600 is rotated rightward to store the exposed film in the cartridge. When rewinding is completed, switch SW16
Turns on and the motor 600 stops. When the switch SW3 is turned on during multiple exposure, the clockwise rotation of the motor 600 is stopped and the subsequent steps are cut.

Now, a low-speed drive or silent mode for operating the camera operating in this way extremely quietly will be described.

FIG. 7 is a schematic view of the outside of the camera. Reference numeral 401 denotes an operating lever of the speed switching switch, which can be switched among three stages of H, N, and L as shown in the view seen from above in FIG.

Now, when the L index 402 and the lever 401 are made to face each other, a switch described later is switched inside the camera, and only the mirror return and aperture opening processes and the film feeding process in FIG. Will be controlled to drive at an ultra-low speed. Therefore, the time required for the aperture control process and the mirror raising process does not change, and the photographer can accurately capture the shutter status, and the precision of the aperture control does not change, which is convenient. On the other hand, the volume of sound after shooting, which accounts for most of the operating noise of the camera, can be made extremely low.

In addition, this silent mode can also be used for slow film feeding to prevent film damage in extremely cold regions.

Next, the battery pack 403 shown in FIG. 9 which is replaceable with respect to the camera body 404 is replaced with another high power pack 405 shown in FIG. 10 which generates a higher voltage.
1 As shown in the figure, the contact piece of the switch 406 inside the camera body
The state in which 411 is in conduction with the terminal 408 is switched to the state in which it is in contact with the terminal 407. It is a reference pin 409,410 and 409 ', 410' for positioning at the time of mounting provided on the pack 403,405.
Since the effective lengths h of 409 and 409 'are different, the operation depends on whether or not the insulating portion 411a at the tip of the contact piece 411 is pressed when attached to the camera body 404.

Note that 412 and 412 'are terminals for supplying power to the camera body 404. Although an appropriate receiving mechanism is provided in the camera body 404 for these terminals and reference pins,
Since it is performed by a known means, it is not shown.

When the switch 406 is in the state shown in FIG. 11, the lever 401 shown in FIG.
When switch to H, the switch described below is switched inside the camera, and the process of the mirror return and aperture opening and the film feeding process in FIG.
Will be controlled to drive at a higher speed.

Therefore, the time required for the aperture control stroke and the mirror ascent stroke does not change, the photographer can accurately capture the shutter temperature, and the precision of the aperture control does not change. There is no bounding and the shooting screen is not displayed.

On the other hand, since the time required for one shooting cycle is shortened, the shutter timing will increase stochastically.

FIG. 12 shows an embodiment of a circuit for controlling the mechanical section of FIG. In the figure, the mirror lowering position switch SW ₁ is turned on when the mirror holding frame 132 is lowered to a predetermined position as described in FIG. 1, and is turned off when it is raised.

As described with reference to FIG. 1, the multiple shooting switching switch SW ₂ is ON when the multiple shooting switching lever 171 is in the normal shooting position, and is OFF when it is in the multiple shooting position.

As shown in Fig. 1, the multi-winding stop switch SW ₃ is turned on during the predetermined phase from the time just before the film is fed and during the predetermined phase from the time the film feeding is completed, and is turned off otherwise. There is.

The trailing curtain completion switch SW ₄ is turned on when the trailing shutter of the shutter is closed as described in FIG. 1, and is turned off when the shutter is reset.

The hoisting limit switch SW ₅ turn ON in the middle of the return stroke of the mirror as described in Figure 1, is turned OFF if the film feeding is completed.

Full push switch SW ₆ is push button 100 as described in Fig. 1.
Is turned on when is pushed to the final stroke, and turned off when the push button is returned.

As described with reference to FIG. 1, the mirror stop switch SW ₇ is turned on when the mirror holding frame 132 moves up to a predetermined position, and turned off when it is moved down.

The SC switch SW ₈ is a switch not shown in FIG. 1, and is S side (ON) when the switch lever (not shown) selects the single frame shooting mode, and C side when the continuous shooting mode is selected. By switching to (OFF), one frame or continuous shooting is controlled as described later.

As shown in FIGS. 8 and _{9, the} switching switch SW ₉ is connected to the operating lever 401 of the speed switching switch, and the a or b terminal is selected. When the operating lever selects the highest speed with the switch, the b terminal side, other than that. Is the a terminal side. In addition to the operation lever 401, the variable resistor VR ₂ for varying the motor speed and the variable resistor VR ₃ for varying the detection time of the film end detection timer are also associated. The interlocking relationship is the variable resistance V
The resistance value of R ₂ becomes higher as the operating lever selects the motor speed as high speed, and the resistance value of variable resistance VR ₃ becomes lower as the high speed side is selected.

The switch SW ₁₀ is a main power switch which is not shown in FIG. 1. The switch SW ₁₀ is set to ON when the camera is used, and when the camera is not used, the push button 100 shown in FIG. 1 is inadvertently operated. However, it is a switch that turns off the power so that the camera does not shoot.

Switch SW ₁₁ is automatically switched Ri battery 605 side E _B when the connector is inserted for external from the power supply to the AC power connector 605 of Figure 12 by the power supply switching switch, not shown in Figure 1 is Separated to become the external power supply side. When the connector 605 connector of the external power supply is not connected is one switched to side to be fed to the circuit by a battery E _B. The switching switch SW ₁₁ is the switch 406 shown in FIG. 11, and the battery packs 403, 405 as shown in FIGS. 9 and 10 are used.
May be selectively used.

With the back cover open / close switch SW ₁₂ , it is turned off when the back cover is open and turned on when it is closed as described in Fig. 1. The switch SW ₁₇ shown in FIG. 13 is also a switch which is interlocked for opening and closing the back cover, and is interlocked with the release lever 5 shown in FIG. 1, and is turned on when the back cover is opened and turned off when the back cover is closed.

The half-press switch SW ₁₃ has pushbutton 10 as described in FIG.
Turns ON when 0 is pressed halfway and OFF when the pushbutton is returned.
become.

Rewind switch SW ₁₄ is to be the turned ON excisional state rewind the return lever 155 turns of FIG. 1, in the position of normal film feeding and summer to OFF.

The rewind button switch SW ₁₅ is OFF when the rewind button 7 is pressed and rewinding is possible as described with reference to FIG. 1, and is ON in a normal photographing state.

The film rewind switch SW ₁₆ is OFF when the film 28 is wound around the spool 29 as described in FIG. 1, when the film is disengaged from the spool or when there is no film.
Turns on.

The DC speed generator 601 connected to the motor shaft of the motor 600 is hidden and invisible in FIG. The DC speed generator 601 changes its power generation polarity depending on the rotation direction of the motor 600. In FIG. 1, when the motor 600 is in the right-handed state, the output of the speed generator 601 is the positive electrode at the connection point side with the diodes D ₁ and D _2, and when the motor 600 is in the left-handed state, the output is from the diodes D ₃ and D ₄ . The connection point side is positive, and the generated voltage is proportional to the rotation speed of the motor 600 in each polarity. Mg ₁ , Mg ₂ , M in Fig. 12
g ₃ corresponds to the diaphragm control magnet coil 85, the shutter front curtain start magnet coil 135, and the shutter rear curtain start magnet coil 135 'in FIG. The variable resistor VR ₁ shown in FIG. 13 is a variable resistor for controlling the aperture which is constituted by 302 and 303 shown in FIG. LED _{1 in} FIG. 12 is a light emitting diode for warning display in the multiple shooting mode, which is not shown in FIG. 1, and blinks in the multiple shooting mode. The LED ₁ is arranged at a known and easy-to-see position such as inside the finder. LED _{2 in} Figure 12
Is a light emitting diode for warning display not shown in FIG. 1, and it is lit when the film is completely photographed and when the rewinding is completed, and the rewind button is not operated when rewinding. If it blinks. The LED ₂ may be arranged in the finder as well as the LED ₁ .

 Next, the operation of the circuit will be described.

Feed circuits because nothing is connected to the external power connector 605 power switching switch SW ₁₁ to perform the battery E _B Niyotsu in the camera is decreased to E _B side. In the following description, the main power switch SW ₁₀ is ON.

(1) Operation of the circuit when the film is loaded (1) -1 Operation when the back cover is open At this time, the back cover open / close switch as described in the explanation of FIG.
SW ₁₂ is OFF, switch SW ₁₇ is ON, hoisting limit switch SW ₅ is
ON. Since the rewinding lever 155 in FIG. 1 is in the normal position, the rewinding switch SW ₁₄ is off. Switch SW ₉ is assumed to be connected to the a terminal side. When the push button 100 is pressed in this state, the half-press switch SW ₁₃ is turned on, the transistor Q ₁₁ is controlled to be turned on via the resistor R ₈ , and the circuit is energized. In FIG. 12, the circuit Q1, which is not shown for the power supply line, is energized by the transistor Q ₁₁ . When the transistor Q ₁₁ turns on, the transistor Q ₁₂ also turns on, but since the switch SW ₁₂ turns off, it has no effect on the control of the transistor Q ₁₁ . Therefore, the circuit is energized only when the half-press switch SW ₁₃ is ON. When the circuit is energized, the capacitor is
The output of the inverter INV ₄ becomes L for a predetermined period determined by C ₁ and the resistor R ₁ , and the flip-flop circuit (G ₇ , G ₈ ), (G ₂₀ ,
G ₂₁ ), (G ₂₆ , G ₂₇ ) and other digital circuits (not shown) are reset. Due to the reset operation, the output of the NAND gate G ₇ is L, the output of G ₈ is H, the output of G ₂₀ is H, and the output of G ₂₁ is L. As described in FIG. 1, since the hoisting limit switch SW ₅ is held ON, the G ₃ output is H and the inverter INV ₁ output is L. Therefore, the G ₆ output is held at H, and the flip-flop circuits G ₇ and G ₈
The set operation by the push button switch SW _{6 which} will be described later is not performed.

Since the rewind switch SW ₁₄ is OFF, the output of the inverter INV ₁₃ is L, the output of the AND gates G ₁₆ , G ₁₇ , G ₂₃ , G ₃₁ is L, and the output of G ₃₂ is H.
Is. The output of the inverter INV _{5 is high because} the output of the NAND gate G ₇ is low. Since the inputs of the AND gate G ₉ are all H, the output is H and the output of the NOR gate G ₁₀ is L. Since the transistor Q ₁₆ is off, the capacitor C ₆ is charged through the variable resistor VR ₃ but the output of the comparator A ₂ is the capacitor
Until the voltage of C ₆ reaches a predetermined voltage, that is, the time constant circuit VR ₃ , C ₆
The state of H is maintained until the predetermined time determined by. Therefore, AND gate G ₁₃ output is L, AND gate G ₁₄ and OR
The output of gate G ₁₅ is high. H output of the OR gate G ₁₅ is turned ON transistor Q ₁₀ via the diode D ₆ to hold the OFF state of and the transistor Q ₉ is discharged by short-circuiting the capacitor C _11. At the same time, since the transistor Q ₆ is biased to be ON via the resistor, the transistors Q ₁ and Q ₇ are turned ON. Since AND gate G ₁₃ is L, transistors Q ₃ , Q ₄ and Q ₂ are OF
F. Transistors than the battery E _B is the slave connexion motor 600
A current flows in the direction of Q ₁ → motor 600 → transistor Q ₇ , and the current in this direction causes the motor 600 to rotate clockwise. When the motor 600 is rotated, the DC speed generator 601 also rotates in the same direction, and current flows through the variable resistors VR ₂ and R ₇ via the diodes D ₁ and D ₄ as described above. When the rotation speed of the motor 600 rises and the voltage of the resistor R ₇ and the (+) input terminal of the comparator A ₁ rises and exceeds the reference voltage E _S , the output of the comparator A ₁ becomes H.
And the transistors Q ₅ and Q ₈ are turned on. Transistor Q ₈
Is turned on, the transistor Q ₆ is turned off and the transistor Q ₁ ,
Since Q ₇ also turns off, power is not supplied to the motor 600 and the rotation speed decreases. That is, since the speed feedback is applied to the rotation of the motor 600, it is controlled to a predetermined rotation speed depending on the resistance value set in the variable resistance VR ₂ . The above speed feedback operation is performed when the switching switch SW ₉ is operating on the operating lever 401 of the speed switching switch and the side a is selected. When the switching switch SW ₉ is on the terminal b side, that is, when the maximum speed is selected, the generated voltage of the DC speed generator 601 is not transmitted, so the speed feedback operation is not performed, and the maximum speed that depends on the voltage of the power supply E _B is reached. The motor 600 rotates. Since the ON / OFF state of the transistor Q _{17 in} this state does not participate in the control operation, description thereof will be omitted. Or half press switch SW ₁₃ is turned OFF, the time constant circuit VR _3, C when the predetermined time determined by the ₆ has passed the transistor Q _6, Q ₁₀ becomes OFF, the capacitance of the resistor and the capacitor C ₁₁ through the capacitor C ₁₁ After a lapse of a predetermined time determined by, the transistor Q ₉ is turned on, and only the transistors Q ₁ and Q ₂ are turned on in a predetermined time via the diodes D ₉ and D ₁₀ . Since the rotation of the motor is in the clockwise direction, the motor 600 is short-circuited via the diode D ₇ and the transistor Q ₂ and the motor is braked and stopped rapidly. After the motor 600 stops, charging of the capacitor C ₁₁ is completed, the transistor Q ₉ turns off, and the transistors Q ₁ and Q ₂ also turn off.
That is, in this state, while the half-push switch SW ₁₃ is being pressed, if the time is within the predetermined time determined by the variable resistor VR ₃ and the capacitor C _6, only while the half-push switch SW ₁₃ is ON, When the time during which the push switch SW ₁₃ is pressed is longer than the predetermined time, the motor 600 turns right only for the predetermined time.

By the way, with the back cover open, switch SW ₁₇ is ON.
Therefore, the reference voltage applied to the (+) side of comparator A ₂ is lower than when switch SW ₁₇ is OFF. Therefore, the predetermined time until the output of the comparator A ₂ is inverted to L when the switch SW ₁₇ is ON for the same set value of the variable resistor VR _{3 is} the same as that when the switch SW ₁₇ is OFF. It's getting shorter than that. The reason is that the timer circuit VR ₃ , C ₆ , A ₂ exceeds the time required to wind the film to the shooting position of the first frame after closing the back cover as described later.
Since it is necessary to lengthen the timer time due to, the film is set as such, and if the time is long when the case back is open, then the film will be displayed if the half-press switch SW ₁₃ is turned on for a long time. The spool is unnecessarily wound up, resulting in unnecessary consumption of the film. This is especially a switch
This happens because when the film is loaded in the high-speed winding state where SW ₉ is switched to the b terminal side, the push button operation by the user cannot keep up with the spool winding speed. It also happens due to carelessness. Therefore, in order to avoid such a thing, when the back cover is opened, switch SW ₁₇ is turned on to shorten the timer time and the reference voltage is lowered to turn on switch SW ₁₇ to shorten the timer time. The reference voltage is lowered to shorten the timer time. The timer time is set within a range in which the spool 29 of FIG. 1 makes about one rotation, and it is controlled in relation to the speed of the motor by a variable resistor VR ₃ which is set in relation to the rotation speed of the motor. Therefore, as a normal operation, the required take-up amount can be obtained by inserting the tip of the film 28 into the take-up spool 29 and then pressing the push button 100 until the motor stops at a predetermined time by a timer.

(1) -2 Operation when the back cover is closed Spool the film 28 surely by the operation of (1) -1
When the back cover of the camera is closed after the film is wound around 29, the film is unwound up to the photographing position of the first frame of the film as described in the explanation of FIG. The operation is performed as follows.
When the back cover is closed, the back cover open / close switch SW ₁₂ changes to ON, the switch SW ₁₇ changes to OFF, and the hoisting limit switch SW ₅ remains ON. When the push button 100 is pressed in this state, the half-press switch SW ₁₃ is turned on and the transistor Q ₁₁ is turned on, so that power is supplied to the circuit, and the motor 600 is rotated rightward for the same reason as the operation of (1) -1. Even if the half-press switch SW ₁₃ is turned off, the positive feedback operation of the transistor Q ₁₂ causes resistance R ₈ and capacitor C ₁₂
The ON operation of Q ₁₁ is maintained and the power supply to the circuit is continued for a predetermined time (usually about 20 seconds to several minutes is selected) determined by.

Accordingly, the film is fed, and a predetermined amount of the film is fed as described in FIG. 1, and when the photographing position of the first frame is reached, the hoisting limit switch SW ₅ is turned off. Rear curtain running complete switch SW ₄
As shown in FIG. 1, the camera is released and the motor 60
It turns off when the shutter is charged by turning 0 to the left, so it is on in this state, but the mirror 1
32 is down, so the switch SW _{1 at the} mirror down position is O
It is becoming N. Therefore, the outputs of the AND gates G ₁ and G ₂ are held at L, so the winding switch SW ₅ is turned off and OR
The output of gate G ₃ becomes L, and AND gates G ₉ , G ₁₄ and OR gate
The output of the G ₁₅ is right-handed state of the motor 600 becomes the L empty feed operation of the film is completed by a sudden stop. The output of NOR gate G ₁₀ becomes H, the transistor Q ₁₆ is ON capacitor C ₆ of the timer circuit is reset. While the film is being fed, the transistor Q ₁₆ is off and the timer circuit consisting of the variable resistor VR ₃ and the capacitor C ₆ operates, but it works in conjunction with the variable resistor VR ₂ that sets the clockwise rotation speed of the motor 600. The variable resistance VR ₃ is set, and the idling amount is set to a predetermined amount by the film counter mechanism shown in FIG. 1. Therefore, the idling time is set in relation to the right turning speed of the motor 600. By contrast, the time until the output of A ₂ by VR ₃ and C ₆ reverses is set to be long, so the motor stop operation is performed by the output of A ₂ reversing to L during the normal idling operation. Absent. The predetermined time in this case is longer than the predetermined time described in the operation (1) -1. It is controlled by the switch SW ₁₇ turning off when the back cover is closed, and the (+) side reference voltage of the comparator A ₂ rising. When the film is caught and stopped in the middle, or when the mechanism does not cause the idling operation, the hoisting limit switch SW ₅ is turned on within the specified time by VR ₃ and C _6.
Since it does not become FF, the output of A ₂ becomes L, the motor stops, the output of inverter INV ₁₀ becomes H, the output of OR gate G ₁₈ becomes H.
The LED LED ₂ lights up and a warning is displayed. In the operation of (1) described above, the flip-flops (G ₇ , G ₈ ) (G ₂₇ , G ₂₆ ) are not inverted, so the exposure control described in (2) below is not performed. The speed of the idling operation at this time is arbitrarily selected by the speed switching lever 401 as described above.

(2) Operation during shooting (2) -1 Operation during normal continuous shooting In the following description, it is assumed that the switching switch SW ₉ is selected at the a terminal side. The description of the state in which SW ₉ selects the b terminal side will be described later. In this mode, SC switch SW ₈ is set to the C side (OFF). Since the normal photographing mode is selected, the multiple photographing switching switch SW ₂ is turned on and the output of the AND gate G ₁ is held at L. Also, since the mirror lowering position switch SW ₁ is in the ON state when the mirror before releasing is lower, the output of the AND gate G ₂ is also L, and when the film feeding is completed, the hoisting limit switch SW 1 _{Since 5 is} also OFF, OR gate G ₃
The output of is connected to the NAND gate G ₃₀ and the inverter I.
The output of NV ₁ is H. When pushbutton switch SW ₆ is turned on by operating pushbutton 100 in FIG. 1, the output of inverter INV ₂ becomes H, and the output of NAND gate G ₃₀ becomes H, so the output of AND gate G ₄ becomes H. , The output of the inverter INV ₃ changes from H to L. On the other hand, assuming that the predetermined reset time by the time constant circuits C ₁ and R ₁ has elapsed, the inverter INV ₄
Is H, and the mirror stop switch SW ₇ is OFF when the mirror before release is in the lowered position as described with reference to FIG. 1, and the rewind switch which is interlocked with the rewind lever 155 in FIG. SW ₁₄ is OFF, rewind button switch SW ₁₅
Is ON, the AND gate G ₁₆ and G ₃₁ outputs are L, and the NOR gate G ₃₂ output is H. Since the inputs of the AND gate G ₅ are all at H, its output is at H. Further, as described above, the output of the inverter INV ₁ is also H. Therefore, after the push button switch SW ₆ is turned on, the time constant circuit R ₂ , C ₂
The output of the NAND gate G ₆ becomes L for a predetermined period determined by, and therefore the flip-flops G ₇ , G ₈ are inverted and the output of the NAND gate G ₇ shifts to H. The predetermined time required by R ₂ and C ₂ is only the time required to invert the flip-flops G ₇ and G ₈ , and the output of the NAND gate G ₆ returns to H immediately after the inversion. When the output of NAND gate G ₇ becomes H, inverter INV ₅ becomes L, and AND
The output of the gate G ₉ is held at L and the output of the NOR circuit G ₁₀ becomes L. This turns off transistor Q ₁₆
Timing of the timer circuit by VR ₃ , C ₆ , A ₂ starts.
At the same time, the output of the AND circuit G ₁₃ becomes H, and the transistor
Q ₃ is turned ON transistors Q _2, Q ₄ is ON, and through the diode D ₅ and the transistor Q ₁₀ is ON the transistor Q ₉
Is held OFF. The output of the AND gate G ₁₄ is L because the output of the AND gate G ₉ is held at L, and AN
Since the output of the D gate G ₁₆ is also L, the output of the OR gate G ₁₅ is L and the transistors Q ₆ , Q ₇ , and Q ₁ are off. When the transistors Q ₂ and Q ₄ are turned on, a current flows in the direction of Q ₂ → motor 600 → Q _{4 in} the motor 600.At this time, the speed generator 601 also rotates counterclockwise, and the generated voltage in that case is the diode D ₃ Since the side connected to the anode of has a positive polarity, current flows in the direction of D ₃ → R ₆ → R ₇ → D ₂ , and when the voltage generated across resistor R ₇ becomes the voltage of E _s , comparator A _By reversing _{1 and} turning on the transistor Q ₅ , speed feedback control is performed in the left-handed state as described above. That is, the speed control of the motor 600 is performed so that a predetermined counterclockwise rotation speed is obtained by the division ratio of R ₆ and R ₇ , and the set speed in that case is 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 shutter release timing constant. First by left-handed rotation of the motor 600
As shown in the figure, the charge of the shutter and the mirror are raised, first the trailing curtain travel completion switch SW ₄ is turned off, and then the mirror lowering position switch SW ₁ is turned off, so the gates G ₂ and G ₃ outputs It is kept at L as usual. On the other hand, when the memory fixed switch SW ₁₈ is turned off, the output of the OR gate G ₁₁ becomes H because the output of G ₇ is H, and in that state, the mirror is lifted and the mirror stop switch SW ₇ is turned on to turn on the flip-flop G ₇ , G ₈ is reset and the output of G ₇ changes to L, the mirror lowering position switch SW ₁ is held because it is OFF. The H level signal of the OR gate G ₁₁ is the P _{1 of the} exposure control unit 604.
It is transmitted to the terminal. While the P ₁ terminal of the exposure control unit 604 is at the H level, a known photometric value storage circuit in the exposure control unit 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 when the push-button switch SW ₆ is turned on, which is the first measurement after the exposure is completed.
The mirror 132 in the figure is held until it descends to a predetermined position.
When the mirror 132 of FIG. 1 is raised to a predetermined position, the mirror stop switch SW ₇ is turned on, the output of the AND gate G ₅ is set to L, the output of the NAND gate G ₆ is held at H, and the flip-flops G ₇ , G. ₈ is reset and the output of G ₇ becomes L. Pushbutton switch SW ₆ is turned on and flipflops G ₇ and G ₈ G ₇
While the output is H, the output of the AND gate G ₁₉ can respond to the output of the aperture control signal terminal P ₂ of the exposure controller 604. In modes such as the shutter priority mode and the program mode in which the aperture control is electrically performed, the P ₂ terminal changes from L to H when the aperture value reaches a predetermined aperture value based on the metering memory value of the exposure control unit 604, and AND Since the output of the gate G ₁₉ becomes H, the transistor Q
_{Since 14} is turned on and the electric charge charged in the capacitor C ₇ is discharged through the aperture control magnet Mg ₁ , the aperture control mechanism described in the explanation of FIG. 1 operates to control the aperture to a predetermined value. The feedback of the aperture value for controlling the aperture value to a predetermined value is performed by the variable resistor VR ₁ connected to the exposure control unit 604. The voltage generated by the generator 601 by the left rotation of the motor 600 is simultaneously applied to the aperture speed compensation input terminal P ₇ of the exposure controller 604. The reason for this is that there is a steady delay between the energization of the throttle control magnet Mg ₁ and the actual locking operation of the aperture control mechanism, which is determined by the characteristics of the magnet Mg ₁ and the inertia of the locking mechanism. Therefore, if the relationship between the delay time and the rotation speed of the motor 600 is not fixed, the accuracy of the control value of the diaphragm is impaired in the mode in which the diaphragm is electrically controlled unless the compensation operation is performed. In particular, since it has a finite speed rising characteristic until it is controlled to a constant speed by the inertia of the drive mechanism including the rotor of the motor 600, the relationship between the delay time and the rotation speed of the motor 600 is fixed in that region. Since it is not, a control error occurs. The rise characteristic thereof also varies with the voltage of the power source E _B. Therefore, in order to eliminate the influence, the voltage related to the speed of the motor 600 by the generator 601 is transmitted to the exposure control unit 604 to perform the compensating operation of the aperture control. The compensation operation will be described later in the description of FIG. In the mode in which the exposure mode selection means in the exposure control unit 604 does not electrically control the aperture value such as the aperture priority mode and the manual exposure setting mode, the P ₂ output is held at L, so the AND gate G ₁₉ Does not become H, so that the aperture value is not electrically controlled.

Here, it is switched by the operation of a memory fixing member (not shown in FIG. 1) and is turned off during normal photographing.
When the memory fixed switch SW ₁₈ is turned on, the output of the OR gate G ₁₁ is held at H and the memory of the photometric value is continuously held.
That memory consolidation towards the camera to the object you want to store the photometric values before pressing Botansuitsuchi SW ₆ are ON switch SW ₁₈
By turning on, the photometric value is stored continuously, and then the pushbutton switch SW ₆ is turned on toward another subject, and the automatic exposure control based on the stored photometric value instead of the photometric value of the subject is performed. Done. Mirror is G ₇ output of flip-flop G _7, G ₈ when raised to a predetermined position changes from H L, and the mirror stop there mirror in the raised position switch SW
_{Since the} output of the AND gate G ₅ is held at L while ₇ is ON, the output of the NAND gate G ₆ is held at H. Therefore, the flip-flops G ₇ and G ₈ are prohibited from reversing when the mirror is in the raised position. When G ₇ output of flip-flop G _7, G ₈ is changed from H to L left旋駆movement of the motor 600 is stopped The output of the OR gate G ₃ are that is not driven dextrorotatory for L, the transistor Q ₉ is Motor 60 by turning on for a predetermined time
0 makes a sudden stop. Also, the flip-flop G ₇ G ₈ G ₇ output is H
By changing from L to L, the output of the inverter INV ₆ changes from L to H after a predetermined time by the time constant circuits R ₃ and C ₃ .
When the output of the inverter INV ₆ changes from L to H, AN
The output of the D gate G ₁₂ becomes H for a predetermined time determined by R ₄ and C ₄ , turning on the transistor Q ₁₃ and discharging the electric charge accumulated in the capacitor C ₅ through the magnet Mg _{2 of the} front curtain control. The shutter front curtain 115 shown in FIG. 1 starts to start exposure. The predetermined delay time due to the time constant circuits C ₃ and R ₃ is not set to stop immediately after the motor 600 is braked, so it is generally set to an estimated time until the motor 600 completely stops. This is to prevent the vibration of the motor 600 from affecting the shooting. If the vibration can be ignored, this delay time may be zero. Diode in parallel with resistor R ₃
D ₁₅ and the diode D ₁₄ connected in parallel with the resistor R ₄ are charged rapidly when the capacitors C ₃ and C ₄ are charged, and are irrelevant when the respective predetermined delay times are generated when discharging them. ing. O of transistor Q _{13 for} a predetermined time
At the same time as the operation of the first curtain start by N, the output of the inverter INV ₈ changes from H to L and the flip-flops G ₂₀ and G ₂₁ G ₂₁
The output H, G ₂₀ output changes from H to L from L. At this time, the output of G ₂₂ remains unchanged and is in the L state, so transistor Q ₁₅
Is off. The front curtain start signal of the NAND gate G ₂₁ changed from L to H is transmitted to the input terminal P ₃ of the exposure control unit 604, and the known shutter timer circuit in the exposure control unit 604 is started.

Shear ivy timer circuit aperture priority mode, shutter priority mode, when performing automatic exposure, such as program mode control when shutter seconds which is calculated on the basis of the photometric values stored in the foregoing, it is transmitted to the P ₃ terminal previously Timing is started from the curtain start signal as a starting point, and when a predetermined time based on the calculated value is finished, a signal changing from H to L is output to the NAND gate G ₂₀ as a rear curtain start signal at the output terminal P ₄ . Specifically, the signal change at the P ₄ terminal is P ₃
Before being transmitted to P, the P ₄ output is held at L, and when the leading curtain start signal is transmitted, P ₄ output changes from L to H at the same time, and when the timing of the shutter timer circuit ends, P _{The 4th} output changes from H to L to generate the trailing curtain start signal, and the state of L is maintained until the leading curtain start signal is generated again. In the manual exposure mode, the shutter timer circuit is activated at the shutter time selected by the shutter time setting member (not shown) in the exposure controller 604. The ON / OFF signal of the push button switch SW ₆ is transmitted to the input terminal P ₅ of the exposure control unit 604.

When the second selected in the manual exposure setting mode is the valve, the P ₄ output becomes irrelevant to the shutter timer circuit, and the P ₄ output becomes H when the front curtain start signal is transmitted to the input terminal P ₃ . At that time, since the P ₅ input is H when the pushbutton switch SW ₆ is OFF, the output terminal P ₄ immediately outputs the rear curtain start signal which changes from H to L. Also, push button switch SW ₆ is O
If it is N, the P ₅ input is L, so the P ₄ output is held at H, and after that, when any pushbutton switch SW ₆ is turned off, P ₅
The input becomes H, and at that time, the P ₄ output outputs the trailing curtain start signal changing from H to L.

When the rear curtain start signal is generated from the output terminal P ₄ , the outputs of the flip-flops G ₂₀ and G ₂₁ are inverted, and the NAND gate G ₂₀ is set to L.
To H, the NAND gate G ₂₁ changes from H to L, the output of G _{22 for a} predetermined time determined by the time constant circuits R ₅ and C ₈ becomes H, and the transistor Q ₁₅ turns on. When the transistor Q ₁₅ is turned on, the charge accumulated in the capacitor C ₉ is transferred to the magnet Mg for the rear curtain control.
Since the electric charge is discharged via ₃ , the shutter rear curtain 115 'in FIG. 1 starts and the exposure is completed. When the trailing-curtain completion switch SW ₄ is turned on by closing the trailing curtain, the mirror lowering position switch SW ₁ is still OFF in this state, so the G ₂ output becomes H and the AND gate G ₃ via the OR gate G _{3. Set} the output of ₉ to H. Therefore, through the AND gates G ₁₄ and G ₁₅ , the transistor Q ₆
Is turned on, the motor 600 rotates clockwise. While the output of the OR gate G ₃ is H, the output of the inverter INV ₁ is not able to output No. left旋信motor 600 inverts the flip-flop G _7, G ₈ by G ₆ output since the summer and L. When the motor 600 starts rotating to the right, the descending control of the mirror and the resetting of the diaphragm control mechanism are performed in the first stroke of the right rotation as described in FIG. When the mirror descends to the predetermined position by the right rotation of the motor, the mirror descending position switch SW ₁ turns ON, so the G ₂ output is L.
However, as described in Fig. 1 before that, the hoisting limit switch
Since SW ₅ turns on, the G ₃ output is held at H and the right rotation of the motor 600 continues. When the mirror is completely lowered, film winding starts, but as described in Fig. 1, the multiple-winding stop switch SW ₃ turns on just before the start of winding, but it is not in the multiple-shooting mode, so the multiple-shooting mode is switched. The G ₁ output is held at L by the switch SW ₂ and is irrelevant to the operation. Since the G ₃ output is held at H by turning on the winding-up limit switch SW _5, the motor 600 continues to rotate right and the film is wound up. When a predetermined amount of film is wound, the winding limiting switch SW ₅ is turned off, the G ₃ output becomes L, the right rotation of the motor is stopped, and the film winding process is completed. When rotating the motor clockwise, the clockwise rotation speed is selected by the variable resistor VR ₂ and switch SW ₉ as described above. When the G ₃ output becomes L due to the completion of film winding, the output of the inverter INV ₁ becomes H. Since the mirror is descending, the mirror stop switch SW ₇ is off.
Since the output of G ₅ is H, the NAND gate G ₆ can respond to the output change of the AND gate G ₄ . SC switch SW ₈
Is on the C side (OFF), the output of the NAND gate G ₃₀ changes from L to H with the completion of winding, and the output of the AND gate G ₄ changes from L if the pushbutton switch SW ₆ is ON at that time. Change to H. Similarly to the above, the output of G _{6 for a} predetermined time determined by the time constant circuits R ₂ and C ₂ becomes L, and the flip-flops G ₇ and G ₈ are inverted to output the motor counterclockwise signal, so the pushbutton switch SW
_{While 6} is ON, the above-mentioned motor counterclockwise rotation (mirror rise,
(Throttle) → Motor stop → Shutter control → Motor clockwise (mirror return, diaphragm open) → Motor clockwise (film winding) → Motor counterclockwise (mirror lift, throttle) → ... cycle is repeated for continuous shooting Done. When pushbutton switch SW ₆ is turned off, the output of inverter INV ₂ is L
Therefore, the G ₄ output is held at L, the motor is stopped when the film winding is completed, and the continuous shooting is stopped because the next shooting sequence is not started.

Next, the operation when the switching switch SW ₉ is on the terminal b side, that is, when the maximum speed mode is selected will be described.

Before the pushbutton switch SW ₆ is turned on, the output of G ₂₉ is L and the output of G ₂₅ is held at H, and the flip-flops G ₂₆ , G ₂₇
Is forcibly reset, G ₂₆ output is L, G ₂₈ output is also L
It has become. Therefore, transistor Q ₁₇ is off. When the push button switch SW ₆ is turned on, the G ₂₉ output is held at H and the forced reset operation is released. Further, similarly to the above, the flip-flops G ₇ and G ₈ are reversed, and the motor 600 is rotated counterclockwise to raise the mirror and control the diaphragm. At this time, however, the H-level pulse output of the AND gate G ₁₂ is not generated yet.
The output of the NAND gate G ₂₅ does not change in the H state. Therefore, the states of the flip-flops G ₂₆ and G ₂₇ do not change and the G ₂₆ output L,
G ₂₈ output L and transistor Q ₁₇ are OFF. Therefore, the motor speed during counterclockwise rotation is controlled at a constant speed by speed feedback. When the raising of the mirror is completed, the switch SW ₇ is turned on to reset the flip-flops G ₇ and G _{8 to} stop the motor and the output of the AND gate G ₁₂ becomes H for a certain time after a predetermined time due to R ₃ and C ₃ . The H output of the AND gate G ₁₂ starts the front curtain of the shutter to start exposure, and the NAND gate G
The output of ₂₅ goes to L, the flip-flops G ₂₆ and G ₂₇ are set, and the output of G ₂₆ goes to H. The exposure mode output signal terminal P ₆ of the exposure control unit 604 is L when the shutter priority mode and the mode in which the diaphragm is electrically controlled such as the program mode are selected, the output is L, and the diaphragm priority mode and the manual exposure are set. In the mode such as the setting mode in which the aperture is not electrically controlled, the output is H.

Therefore, in the shutter priority mode and the program mode, the output of the AND gate G ₂₈ is held at L regardless of the output state of the NAND gate G ₂₆ , but in the aperture priority mode and the manual exposure setting mode, the AND gate G _{28 28} outputs are NAND
It is determined depending on the output state of the gate G ₂₆ . If the aperture priority mode or the manual exposure setting mode is selected, the flip-flops G ₂₆ and G ₂₇ are set to NAND.
When the gate G ₂₆ becomes H output, the output of the AND gate G ₂₈ becomes H and the transistor Q ₁₇ becomes ON. Transistor Q ₁₇ is ON
By doing so, the speed feedback control for the right and left rotations of the motor 600 is not performed. As described above, when the shutter rear curtain is controlled and the exposure is completed, the motor 600 is rotated rightward to perform operations such as mirror lowering and film winding. At this time, since the switch SW ₉ selects the highest speed on the terminal b side, speed feedback control is not performed, and control is performed at the highest speed depending on the voltage of the power source E _B. Motor 600 when the winding is complete flip-flop G _7, G ₈ as press Botansuitsuchi SW ₆ is described above if it is ON at that time is again excisional shooting the next frame is performed by left-handed. O of transistor Q ₁₇
With N, constant speed control is not performed and the vehicle turns left at the highest speed. After that, while the push button switch SW ₆ is continuously pressed and continuous photographing is performed, the ON state of the transistor Q ₁₇ is maintained and speed feedback is not performed, so that the rotation of the motor 600 is performed at the highest speed. When the push-button switch SW ₆ is turned off, this continuous shooting is stopped in the state that the film winding is completed, and the output of the NAND gate G ₂₉ becomes L, so the flip-flops G ₂₆ and G ₂₇ are set to NAND. Gate G ₂₆ , G ₂₈
Both outputs are L, and the transistor Q ₁₇ is OFF. When the switch SW ₆ is turned on again, the speed feedback control is performed when the motor is left-turned in the first one-frame shooting, but the speed feedback is not performed when the motor is rotated in the subsequent continuous shooting, and the state of rotating at the highest speed is obtained. I can do things. In the shutter priority mode and program mode, the exposure control unit 604 P
₆ output is L, so G ₂₈ is held at L, so Q ₁₇ is OFF.
Therefore, constant speed control by speed feedback is performed every time the motor is turned left, but it is always the maximum speed when turned clockwise.

As described above, only when the highest continuous shooting mode is selected in the aperture priority mode or manual exposure mode, constant speed control is performed during left rotation during the first release of continuous shooting, and left rotation during subsequent continuous shooting. The right turn is the fastest. The advantage of doing so is that the release timing of the first frame of continuous shooting is always constant in any mode because the camera user gives it, and the timing of subsequent continuous shooting is determined by the camera device side, so the motor It is not necessary to control the left-hand rotation at a constant speed, and high-speed continuous shooting is obtained by shortening unnecessary time. In the shutter priority mode and the program mode, since the diaphragm is electrically controlled when the motor is rotated left, the counterclockwise rotation speed must be controlled to a predetermined counterclockwise rotation speed in order to ensure the accuracy of the diaphragm control. Therefore, constant speed control of speed feedback is always performed during counterclockwise rotation.

The NAND gate G ₂₉ for generating the reset signals of the flip flops G ₂₆ and G ₂₇ is controlled by the G ₈ outputs of the flip flops G ₇ and G ₈ . This is because the push button SW ₆ is turned off at any time during continuous shooting and shooting is stopped.However, when the timing is when the motor is turning left, the shooting of that frame is finished and film winding is completed. This is because the operation of prohibiting the speed feedback at the time of counterclockwise rotation of the motor by turning on the transistor Q ₁₇ is continued at the time of counterclockwise rotation and the reset signal of the flip-flops G ₂₆ and G ₂₇ is generated when the counterclockwise rotation is completed.

(2) -2 Normal operation during single frame shooting In this mode, SC switch SW ₈ is set to the S side. Since the normal photographing mode is selected, the multiple photographing switching switch SW ₂ is turned on, and the G ₁ output is held at L. In this mode, the re-releasing operation related to the ON of the pushbutton switch SW ₆ is not performed in synchronization with the completion of the film winding described in (2) -1, and the other operations are (2) -1. Is the same. That is, since the SC switching switch SW ₈ is on the S side (ON), the G ₃₀ output is held at H. G ₄ output is G
Since it responds only to push button switch SW ₆ regardless of the output of ₃ , when G ₅ output and INV ₁ output are H, when push button switch SW ₆ is turned ON, G ₄ output changes from L to H, G ₆ outputs the above release operation by the motor left-handed inverts the flip-flop G _7, G ₈ and generates a predetermined period L output by R _2, C ₂ is initiated. While exposure control and the winding of the film is ON push Botansuitsuchi SW ₆ were completed is maintained remains G ₄ output held in the H, only when G ₄ output is changed from L to H since R _2, C ₂ predetermined period G ₆ output by the then varies the L held by the H G ₆ outputs L
It never becomes. In order to re-release, it is enough to charge C ₂ by turning off push button switch SW ₆ once.
If pushbutton switch SW ₆ is turned on after C ₂ is recharged, AND gate G ₅ at that time, and when the output of inverter INV ₁ is H, that is, if the motor is not in the right rotation state, NAND gate G ₆
The output changes to L and is released again, so that each time the pushbutton switch SW ₆ is turned on, one frame is taken. In this single frame shooting mode, SC switch SW ₈ is ON because it is ON.
Since the output of the gate G ₂₅ is held at H, the flip-flops G ₂₆ and G ₂₇ are in the reset state and do not invert. Therefore, the transistor Q ₁₇ is always off. Therefore, even when the switching switch SW ₉ selects the maximum speed mode on the terminal b side, the constant speed control by speed feedback is performed for the left rotation of the motor. The reason is not only the effect on the mode in which the aperture is electrically controlled, but also in the mode in which the aperture is not electrically controlled, the release timing for one frame shooting is given by the camera user every time, so that the release timing is constant in any mode. Because it is desirable to do. Therefore, during leftward and rightward rotation of the motor, the rotation speed of the motor 600 is controlled according to the speed set independently of each other.

(2) -3 Operation during multiple continuous shooting In this mode, the SC switch SW ₈ is selected to the C side (OFF), and the multiple shooting switching lever 171 in FIG. Shooting switch SW ₂ is OFF
Also, the hoisting limit switch SW ₅ is off at the multiple shooting position.
Is held in a state. It is assumed that the switching switch SW ₉ is selected on the side a. Multiple shooting switching switch SW ₂ OFF
Therefore, the H level signal is transmitted to the multiplex warning circuit OSC602, and the OSC602 outputs the blinking signal of the light emitting diode LED ₁ to warn that the multiplex photographing mode is set. The LED ₁ is preferably located in the finder as is known. Mirror down position switch when film winding is completed before release
SW ₁ is ON, multiple hoisting stop switch SW ₃ is ON, trailing curtain completion switch SW ₄ is ON, hoisting limit switch SW ₅ is OFF, mirror stop switch SW ₇ is OFF. Therefore, each gate G ₁ , G ₂ , G ₃
The output is L. Since the outputs of the inverter INV ₁ and the gates G ₅ and G ₃₀ are H, the output of G ₆ becomes L for a predetermined time when the pushbutton switch SW ₆ is turned on, and the flip-flops G ₇ and G ₈ are inverted to output the motor left rotation signal. When the mirror is raised and the diaphragm is controlled by the left rotation of the motor and the mirror is raised to a predetermined position, the mirror stop switch SW ₇ is turned on. As a result, the flip-flops G ₇ and G ₈ are reset, the motor is stopped and the exposure of the shutter is started, and when the rear curtain of the shutter is closed, the rear-curtain completion switch SW ₄ is turned on to turn G ₂ and G 8 on.
_{Since 1} output is H, G ₃ output becomes H and the motor 600 turns clockwise to perform mirror lowering and reset of the aperture control mechanism. When the mirror lowers to the predetermined position, the mirror lowering position switch SW
₁ turns ON and G ₂ output becomes L, but multiple hoisting stop switch SW ₃
Is OF until the specified phase just before the film winding starts.
Since the output is F, the G ₁ output is H, and accordingly, the right rotation of the motor is continued. When a predetermined phase just before the film winding is started, the multiple winding stop switch SW ₃ is turned on, and the G ₁ output becomes L. Right rotation of the motor is stopped by the G ₁ output L, and the output of the inverter INV ₁ and the gate G ₃₀ changes from L to H. Therefore, at that time, the push button switch SW ₆ is turned on as in (2) -1. since lever G ₄ output is changed to H from L, R _2, C ₂ inverted again release operation outputs the No. motor left旋信by the predetermined time G ₆ output flip-flop G _7, G ₈ becomes L by the Done. Therefore, push button switch
While SW ₆ is ON, the film transfer is not performed and multiple shooting is repeated.When the push button switch SW ₆ is turned OFF, it stops in the phase state just before the film winding, and again the push button switch SW ₆ If is turned on, multiple exposure will be performed many times. First G ₁ output since the OFF before the multiplex winding stop switch SW ₃ rear curtain travel completion switch SW ₄ is turned OFF At a becomes once H motor right- release has been mirrored upstroke by left-handed motor A signal is generated, but the left-turn signal of the flip-flops G ₇ and G ₈ is output before that, and the G ₉ output is held at L by the inverter INV ₅ during that time.
Motor right旋信No. by AND gate G ₁ is the AND gate G ₉ after the flip-flops G ₇ by ON temporary H state of things that are not transmitted to the motor control circuit and the G ₁ output mirror stop switch SW _7, G ₈ Since the signal returns to L before resetting, the temporary generation of the G ₁ right rotation signal that occurs during left rotation of the motor has no effect on the sequence of multiple shooting.
To return the multiple shooting mode to the normal shooting mode, after the multiple shooting is completed, the multiple shooting switching lever in FIG. 1 may be returned to the normal shooting position, and the normal shooting can be restored as described in FIG. If the hoisting limit switch SW ₅ turns ON, G ₃
Since the output becomes H and a motor right-turn signal is generated, the film is wound up, and when the transfer of a predetermined amount of film is completed, the winding-up limit switch SW ₅ is turned off and the right rotation of the motor is stopped. It should be noted that in FIG. 1 and FIG. 13, the multiple shooting switching lever is normally set in a state where the shooting is temporarily stopped in the multiple shooting mode and the operation of supplying power to the circuit by Q ₁₁ , Q ₁₂ , R ₈ and C ₁₂ for a predetermined time is completed. When switching to the shooting mode, the circuit power supply is stopped, so the motor does not rotate to the right.If the push button 100 is pressed and the half-press switch SW ₁₃ is turned on to start circuit power supply, the film transfer described above will occur. Done. In such a state, the shutter does not release even if the push button 100 is pressed when the multi-shooting switching lever 171 is returned to the normal shooting to continue shooting, and the shutter runs to start from the film winding sequence. There may be a problem that the expected release timing up to the next is incorrect, or the release will not be released when the SC switch SW ₈ is on the S side (ON). To improve this point, press the half-press switch SW ₁₃
Regardless of the operation of 100, a mechanism to temporarily turn on the multiple shooting switching lever 171 in the process of returning to the normal shooting mode is added, or a switch to be connected in parallel with the half-press switch SW ₁₃ is provided separately. This can be solved by adding a mechanism for temporarily turning on the switch transiently in the process of returning the switch to the normal photographing mode. The automatic exposure control and the manual exposure control, which are not described in detail, are performed in the same manner as described in (2) -1.

In the above operation, the constant speed control set by the speed feedback is individually performed in each of the right rotation and the left rotation of the motor as in the operation when SW ₉ of (2) -1 is on the a terminal side.

The operation when switch SW ₉ is on the b terminal side is (2) -1.
In the same way as the operation when switch SW ₉ is on the b terminal side, switch SW is used in aperture priority mode and manual exposure setting mode.
_At the time of the first exposure when 6 is turned on, the left turn of the motor is controlled at a constant speed to keep the release timing constant, and the right turn after that is the highest speed because there is no speed feedback, and it is continuously performed continuously. Left-handed rotation and right-handed rotation for exposure are all controlled at the highest speed without velocity feedback. In the shutter priority mode and program mode, constant speed control is always performed when turning left.

(2) -4 Operation for multiplex single frame shooting In this mode, SC switching switch is applied to the state of (2) -3.
Obtained by turning SW ₈ to the S side (ON). In this mode, the output of the NAND gate G ₃₀ remains held at H, so the release operation is the same as in (2) -2.
Pushbutton switch SW ₆ when the output of V ₁ and AND gate G ₅ is H
When the switch is turned on, the flip-flops G ₇ and G ₈ are reversed and the camera is released by turning the motor counterclockwise, and even if the pushbutton switch SW ₆ is kept on, the camera is exposed and the mirror descends to transfer the film. It will stop automatically when it is about to be shut down. To release the shutter again, if the push button switch SW ₆ is turned off and then turned on, multiple shooting is performed. To return from the multiple shooting to the normal shooting, it is sufficient to return the multiple shooting switching lever 171 of FIG. 1 to the normal shooting position as described in (2) -3. In this multiple-frame shooting, for the same reason as (2) -2, the left rotation of the motor is always controlled at a constant speed regardless of the selection state of the switch SW _{9 and} the selection state of the exposure mode such as the shutter priority mode and the aperture priority mode. Right turn is controlled at an arbitrarily selected speed.

(3) Operation at the end of the film The operation at the end of the film is performed during the film transfer sequence in the normal photographing mode. That is, since the film cannot be pulled out from the cartridge at the end of the film during the film transfer, a predetermined amount of film is not transferred and the hoisting limit switch SW ₅ remains off, so the variable resistor VR ₃ , capacitor C ₆ , comparator A ₂ output becomes L after a predetermined elapsed time corresponding to the selected winding time by A _{2, and the} outputs of AND gates G ₁₃ and G ₁₄ are held at L to stop the motor, and inverter INV ₁₀ becomes H Since the output of OR gate G ₁₈ becomes H, the light emitting diode LED ₂ for warning display lights up to warn that the motor has stopped automatically.

(4) Operation during film rewinding This operates according to the following procedure as described in FIG. Rewinding is started by first pressing the rewinding button 7 and then setting the rewinding lever 155 to the rewinding position. Rewind button switch SW ₁₅ is turned off by pressing rewind button 7.
If the rewind lever is set to the rewind position, the film end switch SW ₁₆ will be
Since it is turned off, the G ₁₆ output goes high. The output of G ₁₇ is L because the inverter INV ₁₂ is L output, the rewinding warning circuit 603 does not operate, and the output to the OR gate G ₁₈ is L.
G ₂₄ output is L because SW ₁₄ is ON. G ₂₃
Inverter INV ₁₄ is a film end switch SW ₁₆ is O
Because it is L for FF, it is L. When the G ₁₆ output becomes H, the G ₁₅ output also becomes H and the motor starts clockwise rotation to rewind the film. Also, because G ₁₆ output is H, NOR
The output of the gate G ₃₂ is held at L, and accordingly the output of G ₅ is also held at L, so that the flip-flops G ₇ and G ₈ are held in the reset state. Therefore, in this state, the left motor rotation signal is not output. Absent.

For the inverter INV _11, the mirror down position switch SW ₁ is OFF.
If the film rewind is mistakenly set while the mirror is moving up and the exposure is being performed, the film is not rewound immediately and the exposure is completed and the mirror is lowered before the motor is rewound. A signal for giving a prohibition signal for starting film rewinding by clockwise rotation is generated. The L output at the time of rewinding of NOR gate G ₃₂ holds the output of G ₉ at L, so that film rewinding is started and Q ₁₆ is held ON at the same time as VR ₃ , C ₆ , A ₂
The operation of the timer circuit by is stopped even if the motor is rotated. While the rewind switch SW ₁₄ is on, Q ₁₁ is turned on via D ₁₁ to keep the power supply to the circuit.

When the film rewinding is completed, the film end switch
Since SW ₁₆ turns on, G ₁₆ output becomes L, while G ₃₁ becomes H output, so G ₃₂ output remains L, so G ₉ is L output and flip-flops G ₇ and G ₈ are in reset state. Therefore, the motor is stopped and the output of G ₂₃ becomes H, LED ₂ lights up and warns that the rewinding is completed. When the rewind lever is set to rewind without pressing the rewind button, the output of G ₁₆ is L and the output of G ₁₇ is H, so the rewind warning circuit 603 operates and LED ₂ blinks. Warn that it cannot be rewound.

When this film is rewound, it is not necessary to turn on the full-press switch SW ₆ so it is normally turned off.Therefore, flip-flops G ₂₆ and G ₂₇ are in the reset state and transistor Q ₁₇ is turned off. There is. Even when the switch SW ₆ remains ON and the flip-flops G ₂₆ and G ₂₈ are set, the G ₃₂ output is L at the time of rewinding, so the G ₂₈ output is also L and the transistor Q ₁₇ is off. Therefore, the motor speed at the time of rewinding becomes a speed arbitrarily selected by the speed switching operation lever.

In the embodiment of the present invention shown in FIG. 12, the speed feedback control is performed by speed detection by the DC speed generator for the constant speed control of the motor, but the present invention is not limited thereto, and for example, It is obvious that the speed feedback can be controlled by a known detecting means for detecting the rotation speed of the motor in a pulsed manner by 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 is related to the power transistors Q ₁ and Q ₂ for controlling the motor current in relation to the voltage of the power source E _B. ,
It may require a large amount of thermal load on Q ₄ and Q ₇ ,
High power transistors must be used with good heat dissipation, which is a problem when making the camera small. Q ₁ is in order to solve _{it, Q 2, Q 4, Q} 7 a pulsed manner ON, OFF is allowed to ON, OF
Controlling the duty ratio of F, that is, pulse width modulation is preferable because thermal generation is minimized and a small transistor can be used.

FIG. 13 shows an embodiment of the aperture speed correction circuit of the exposure control section 604 of FIG. In FIG. 13, the same symbols are attached to the parts shown in FIG. The logarithmic compression circuit 610 converts the photometric current from the photodiode PD into a logarithmically compressed voltage. The storage circuit 611 is a circuit for storing the photometric value by the logarithmic compression circuit 610 when the H output of the OR gate G ₁₁ is transmitted through the P ₁ terminal. The arithmetic circuit 612 is selected by the mode selector circuit 617 using the outputs of the memory circuit 611 and the film sensitivity setting circuit 613, the lens preset ring aperture value and the lens open aperture value detection circuit, and the shutter time setting circuit 615 as arithmetic inputs. Calculation processing is performed according to the mode, and a display output of the exposure adjustment value is output to the display circuit 616, an output that specifies the control shutter time by the shutter timer circuit 618, and an aperture value specification output for aperture control are output. Mode selector circuit 617
Outputs the H level to the P ₆ terminal when the aperture priority mode or the manual exposure setting mode is selected, and outputs the L level when the program mode or the shutter priority mode is selected. 619 Zohaba the generated voltage of the speed generator is transmitted via the P ₇ pin aperture speed correction circuit A _10, R _10, R ₁₁
And the control aperture value voltage transmitted from the arithmetic circuit 612 and the A ₁₀ output voltage as input
_{And a} differential amplification circuit constituted by ₁₁ , R ₁₂ , R ₁₃ , R ₁₄ , and R ₁₅ . The control aperture value voltage output from the arithmetic circuit 612 has such a relationship that the output voltage increases as the control target aperture value becomes the small aperture value. E _s is the reference voltage,
VR ₁ is a variable resistance associated with the movement of the aforementioned aperture control lever, I _s is a constant current sink source. Since the variable resistor VR ₁ has a relationship of decreasing its resistance value as the aperture value becomes smaller, the voltage generated at the connection point between the variable resistor VR ₁ and the constant current suction source I _s also has the smaller aperture value. As a result, the voltage rises. A ₁₂ is a comparator, and when the voltage of the variable resistor VR ₁ is equal to or higher than the output of the aperture speed correction circuit 619, the output becomes H and the aperture lock signal is output via the P ₂ terminal. The output of the diaphragm speed correction circuit 619 becomes lower than the output of the arithmetic circuit 612 when the motor speed increases. That is, the voltage is corrected to the open diameter side of the control target aperture value of the arithmetic circuit 612 according to the motor speed. Since the variable resistance VR ₁ changes from the diaphragm open side to the small aperture diaphragm side, the diaphragm lock signal of the comparator A ₁₂ is higher than VR ₁ reaching the control target diaphragm value output from the arithmetic circuit 612 as the motor speed increases. It will be output soon. As the motor speed increases, the diaphragm locking signal is output earlier, and the locking delay of the diaphragm locking mechanism described above is compensated for, so that accurate diaphragm control is performed.

In this example, each mechanism in the camera was driven by a single motor, but the present invention is not limited to this, and can be applied to a camera in which each mechanism in the camera is shared by a plurality of motors. For example, the first motor may be used for film winding, and the second motor may be used for diaphragm driving and mirror driving.

In this embodiment, the sprocket is used as a follower, and the idle feed amount of the film leader and the length of one frame of the film are measured by a switch that generates an electric signal at a predetermined rotation angle of the sprocket. As the method, an appropriate means such as photoelectrically counting the perforations of the film can be adopted.

Further, the film feed amount when the back cover is opened was controlled by the sprocket rotation time by a timer, but the spool rotation angle may be controlled, or the film feed amount itself may be measured and controlled to a predetermined amount. Good.

〔The invention's effect〕

As described above, according to the present invention, it is possible to visually confirm the winding of the film on the spool under bad conditions while maintaining the good efficiency of the spool drive type film feeding device, and to wind the film on the spool if necessary. It is also possible to modify the condition with your hands, which has the effect of expanding the range of applications of the camera.

[Brief description of drawings]

1 is a schematic perspective view of a drive mechanism portion of an embodiment of a camera of the present invention, FIG. 2 is a schematic perspective view showing the sprocket mechanism portion of FIG. 1 taken out, and FIG. 3 is a schematic perspective view of FIG. FIG. 4 is a schematic perspective view showing a mirror mechanism unit taken out, FIG. 4 is a schematic perspective view showing a mirror raised state, FIG. 5 is a schematic perspective view of a modified example of the multiple exposure mechanism, and FIG. FIG. 7 is a chart showing the relationship between the operation and a switch for controlling the operation, FIG. 7 is a schematic side view of the camera of the above embodiment, FIG. 8 is a plan view of a part of FIG. 7, and FIG. FIG. 10 is a schematic view showing an example of a battery pack used in the embodiment, FIG. 10 is a schematic view showing an example of a battery pack having a power higher than that of FIG. 9, and FIG. 11 is a diagram showing the battery pack shown in FIG. 9 and FIG. Fig. 12 is a schematic diagram of a switch that is switched by the It is a detailed circuit diagram of the output control section. [Explanation of the sign of main parts] 29 …… Spool 100 …… Push button 600 …… Motor 604 …… Exposure control unit SW12 …… Back cover open / close switch SW13 …… Half-press switch VR3 …… Variable resistance C6 …… Capacitor A2 ……comparator

Claims (3)

(57) [Claims] 1. An operating member that is manually operated to release a shutter, an operation signal generating unit that generates an operation signal while the operating member is operated, a spool for winding a film, and the spool. A motor for driving, a back lid opening detection means for detecting an open state of the camera back lid and generating an opening signal, a film movement amount regulation means for generating a signal for regulating a film movement amount, When both the opening signal from the back lid opening detection means and the operation signal from the operation signal generating means are received, the motor is energized to start driving the spool, and the opening signal is received and When the signal from the film movement amount regulation means is received or the operation signal disappears, the motor is short-circuited to stop the drive of the spool, and the back cover of the camera is closed. Wherein when the release signal is lost, the film feed device, characterized in that it consists of a control means for disabling said film movement amount regulating means Te. 2. The film feeding device according to claim 1, wherein the film moving amount regulating means is a timer means set to a time required for the spool to rotate a predetermined amount. . 3. The film feeding apparatus according to claim 2, wherein the timer means is set to a time required for the spool to rotate about one revolution.