JPH0359635A - Driving controller for camera - Google Patents

Abstract

PURPOSE:To simplify constitution and to achieve miniaturization by switching the position of a built-in stroboscope with the aid of a mirror driving mechanism and a driving motor for a charger mechanism. CONSTITUTION:This controller is provided with a motor 99, the mirror driving mechanism 100 switching the position of a movable mirror between a pre- photographing observation position and a retreat position for exposure, the charge mechanism 200 charging a shutter, a stroboscope driving mechanism 300 switching the position of the built-in stroboscope between a flashing position and a housing position, and a connecting mechanism 10 connecting the output shaft of the motor 99 to the mirror driving mechanism 100, the charge mechanism 200 and the stroboscope driving mechanism 300. Through the normal rotation of the motor 99, the connecting mechanism 10 brings the mirror driving mechanism 100 and the charge mechanism 200 into a driving-enable condition. On the other hand, the reverse rotation of the motor 99 drives the stroboscope driving mechanism 100 to switch the built-in stroboscope 301 to the flashing position. Thus, the constitution is simplified and miniaturized, and costs can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for driving and controlling various mechanisms provided in an electrically driven camera.

[Conventional technology]

2. Description of the Related Art Conventionally, as an electrically driven camera, one in which a mirror drive mechanism, a shutter charge mechanism, etc. are driven and controlled by a motor is known. Among such cameras, there are also cameras in which switching between the light emitting position and storage position of the built-in strobe is electrically controlled, but the built-in strobe is driven by a drive source different from the motor. In other words, some electrically driven cameras are equipped with a special motor to switch the position of the built-in flash, while other electrically driven cameras use the motor to switch the built-in flash to the storage position. However, an actuator such as a magnet was provided to switch to the light emitting position.

[Problems to be Solved by the Invention] However, if a special drive source is provided to drive and switch the position of the built-in strobe, the configuration will not only become complicated, but it will also hinder miniaturization of the camera and increase costs. cause it to rise.

An object of the present invention is to simplify the configuration of an electrically driven camera by configuring the built-in strobe so that the position of the built-in strobe can be changed by the drive motor of the mirror drive mechanism or charge mechanism, thereby eliminating the need for a special actuator for driving the built-in strobe. The objective is to reduce the size and cost.

[Means for Solving the Problems] A camera drive control device according to the present invention includes a motor, a mirror drive mechanism for switching the movable 4-color camera between a pre-photographing observation position and an exposure retreat position, and a shutter charging mechanism. a strobe drive mechanism that switches the built-in strobe between a light emitting position and a storage position; and a coupling mechanism that connects the output shaft of the motor to the mirror drive mechanism, the charge mechanism, and the strobe drive mechanism. The coupling mechanism is capable of driving at least the mirror drive mechanism and the charging mechanism by normal rotation of the motor, and drives the strobe drive mechanism by reverse rotation of the motor to move the built-in strobe to the light emitting position. It is characterized by being able to switch to

(Example) The present invention will be explained below with reference to illustrated embodiments.

Each figure shows an embodiment of the present invention. Figure 1 shows a state in which each mechanism is in its initial position, Figure 3 shows a state in which the built-in strobe has protruded to the light emitting position, and Figure 4 shows a state in which the mirror has been switched to the up position. FIG. 5 shows the state at the latter half of charging.

In these figures, the example device is a movable short-1io
A mirror drive mechanism 100 that switches between an observation position before photography and a retreat position during exposure, a charging mechanism 200 that charges a shutter (not shown), and a built-in strobe 30.
1, a strobe drive mechanism 300 that switches between the light emitting position and the stowed position, and an aperture drive mechanism 400 that closes down the aperture (not shown) and switches between running release and open aperture.
Equipped with. The sequence motor 99 connects a mirror drive mechanism 100 , a charge mechanism 200 , a strobe drive mechanism 300 , and an aperture drive mechanism 4 through a coupling mechanism consisting of a gear train 10 .
00 to drive these.

The movable mirror 110 is fixed to a movable mirror sheet 111, and the movable mirror sheet 111 is rotatably attached to a support frame (not shown) provided inside the camera body via a pin 112, and a mirror restoring spring is attached to the movable mirror sheet 111. 113, it is always urged toward the pre-photography observation position (the position shown in FIG. 1). The mirror drive mechanism 100 has a mirror up member 101,
This mirror up member 101 is swingably supported by a support frame by a pin 102. The tip of the mirror up member lO1 engages with an engagement pin 114 provided on the movable mirror sheet 111, and the center of the mirror up member 101 engages with the mirror up cam 103. The mirror amplifier cam 103 is integrally connected to the one-rotation gear 22, and the mirror-up cam 103 and the one-rotation gear 22 are rotatably provided on a support shaft 104 provided on the support frame.

In the initial position (FIG. 1), the mirror up member 101
is in a downwardly swung position, and the movable mirror sheet 111
is biased by the mirror restoring spring 113 and is in a clockwise rotated position. That is, at this time, the mirror 11.0 is at the pre-photographing observation position. When the one-rotation gear 22 and the mirror up cam 103 rotate and the convex part of this cam engages the mirror up member 101, the mirror up member 101 rotates clockwise in the figure, thereby causing the movable mirror sheet 111 to restore the mirror. It rotates counterclockwise against the spring 113.

As a result, the mirror 110 is switched to the exposure retracted position (FIG. 4).

As shown in FIG. 1, the shutter set lever 210 is swingable between a charging complete position indicated by a solid line and a shutter running complete position indicated by an imaginary line. The set lever 210 is rotated upward by the shutter charging member 201 of the charging mechanism 200 and switched to the charging complete position. At this fully charged position, the leading and trailing curtains of the shutter (not shown) are charged. That is, at this time, a locking member (not shown) locks the leading curtain, trailing curtain, and set lever 210, thereby fixing the leading curtain, trailing curtain, and set lever 210 at the fully charged position.

The shutter charge member 201 is swingably attached to the support frame by a pin 202, the tip of the shutter charge member 201 can be engaged with a set lever 210, and the center of the shutter charge member 201 is engaged with a charge cam 203. engage. The charge cam 203 is integrally connected to the one-rotation gear 21, and these charge cams 2
o3 and the one-rotation gear 21 are connected to the support shaft 2 provided in the support frame.
It is rotatably supported by 04.

In the initial position (FIG. 1), the shutter charge member 201 is in a downwardly swung position, and the set lever is
210 is in the raised position, that is, in the fully charged position. When the shutter is released here, as shown in FIG. 4, the set lever 21O is lowered by the elastic force of a spring (not shown) and engaged with the shutter charge member 201. Here, the one-rotation gear 21 and the charge cam 203 rotate,
When the convex portion of the charge cam 203 engages with the charge member 201, the charge member 201 rotates clockwise as shown in FIG. 5, and the set lever 21O is pushed upward. As a result, the shutter is charged.

The built-in strobe 301 can be switched between an extended position, that is, a light emitting position, and a retracted position, and is in the retracted position in FIG. 1, in the light emitting position in FIGS. 3 and 4, and in the light emitting position in FIG. It is moving from position to storage position. The light emitting strobe 301 has a guide pin 30
2 is provided, and this guide pin 302 is engaged with a guide slit 303 bored in the support frame. Therefore, the strobe 301 is switched to the light emitting position or the storage position by moving the guide pin 302 along the guide slit 3o3. The built-in strobe 301 is always biased by a pop-up spring 304 in the protruding direction, that is, toward the light emitting position.

A strobe drive mechanism 300 that switches the position of the built-in strobe 301 includes a locking member 310 and a locking release member 3.
20 and a strobe storage member 330. The locking member 310 is pivotally supported by a pin 311 provided on the support frame, and the locking release member 320 is also rotatably supported by the pin 311. A guide pin 302 is provided at one end of the locking member 310.
A lockable projection 312 is formed at the other end, and a locking spring 313 is connected to the other end, and the locking member 31O is always biased counterclockwise in the figure. Unlocking member 320
has a bent portion 321 that can be engaged with the locking member 310 and an arm portion 323 that can be engaged with the lock release cam 322. The lock release cam 322 is integrally connected to the one-rotation gear 23, and the lock release cam 322 and the one-rotation gear 23 are rotatably supported by a support shaft 324 provided in the support frame. A portion of the unlocking member 320 near the bent portion 321 is connected to the engagement arm portion 332 of the strobe storage member 330 by a spring 325. The strobe storage member 330 is rotatably supported by a pin 331 provided on the support frame.
The pressing arm portion 333 extending in one direction can be engaged with the guide pin 302 of the strobe 301, and the engaging arm portion 332 extending in the other direction can be engaged with the storage cam 334. This storage cam 334 is also integrally connected to the one-rotation gear 23 similarly to the lock release cam 322.

In the initial position (FIG. 1), the protrusion 31 of the locking member 310
2 engages with the guide pin 302 of the strobe 301 to retract the strobe 301 to the storage position. Here, the lock release cam 322 rotates counterclockwise in the figure, and the lock release member 3
When the arm portion 323 of No. 20 is pressed, the lock release member 320 rotates clockwise as shown in FIG. . As a result, the protrusion 31 of the lock release member 320
2 opens the guide bin 302, and the strobe 301 is biased by the pop-up spring 304 and is displaced to the right (light emitting position) in the figure.

The aperture drive mechanism 400 includes an aperture control block 401 that has a built-in circuit for setting the aperture, and an aperture regulation lever 40.
2, slide plate 403, and open aperture set member 404
Equipped with. The slide plate 403 has two guide holes 405.
406, and these guide holes 405 and 406 engage guide pins 407 and 408 fixed to the support frame to guide the slide plate 403 in the vertical direction in the figure. Slide plate 4
03 is always urged upward by a restoring spring 409.

The protrusion 411 formed at the upper end of the slide plate 403 is
It engages with the lever 412 of the diaphragm control block 401, and therefore the lever 412 is displaced by the vertical movement of the slide jli 403 to control the diaphragm. On the other hand, slide plate 4
A protrusion 413 formed at the center of 03 engages with the upper surface of the aperture regulating lever 402 and restricts upward movement of the aperture regulating lever 402. The aperture regulating lever 402 is always urged upward, that is, in the direction of reducing the aperture, by a spring (not shown), and is at the lowest position, that is, the open aperture position in FIG.

The open aperture setting member 404 is swingably supported by a pin 414 provided on the support frame, and the tip end is supported by a coupling spring 415.
It is connected to the slide plate 403 by. A central portion of the open aperture setting member 404 engages with an aperture control cam 416 .

The aperture control cam 416 is integrally connected to the one-rotation gear 21 similarly to the charge cam 203.

In the initial position (FIG. 1), the open aperture setting member 40
4 engages with the convex portion of the aperture control cam 416 and is located at a position relatively displaced downward. At this time, the slide plate 403 is pulled by the coupling spring 415 and is at the lowest position. Therefore, the aperture regulation lever 413 is in the lowered position, that is, in the open aperture position, and the lever 412 of the aperture control block 401 is also in the open aperture position. When the one-rotation gear 21 and the aperture control cam 416 rotate clockwise in the figure from this state, the opening aperture set member 40 as shown in FIG.
4 is released from the convex portion of the aperture control cam 416 and rotates counterclockwise. As a result, the slide plate 403
09 and rises, and at the same time, the aperture regulation lever 402 and the lever 412 of the aperture control block 401 move upward to obtain a predetermined aperture state.

Each mechanism 100, 200, 300, 400 is driven by a single drive source, ie, Siken Smoke 99 in this embodiment. A gear train IO that connects each of these mechanisms and the Z-Kensmoke 99 includes a binion gear 12 provided on the output shaft 11 of the sequence motor 99, a reduction gear 13.
14, idle gear 15, and one rotation gear 21.22.
23. Binion gear 12 meshes with reduction gear 13 , and reduction gears 13 , 14 reduce the rotation of pinion gear 12 and transmit it to idle gear 15 . idol gear 1
5 meshes with the one-rotation gear 21. 1 rotation gear 21.22
．． 23 have the same number of teeth, and one rotation gear 21
is the one-rotation gear 22, and the one-rotation gear 22 is the one-rotation gear 23.
mesh with. Therefore, the single rotation gears 2122, 23 rotate by the same angle relative to each other.

The one-rotation gear 22 is provided with a state detection brush 501 . The state detection brush 501 is disposed opposite to the state detection code plate 502 shown in FIG.
It is possible to engage three contacts 511, 512, and 513 formed in the . Thus, the state detection brush 501 and these contacts 511, 5121, and 513 constitute a state switch.

The contact point 512 located in the center is connected to each of the above mechanisms 100.20.
In order to set 0.300.400 as the initial position, the contact 511 located at the top of the diagram is used to stop the mirror in the up state with the mirror up signal, and the contact 513 located at the bottom of the diagram is built-in when the motor is reversed. The pop-up signal of the strobe 301 serves to stop the reverse rotation.

Next, the operation of the apparatus of this embodiment will be explained with reference to FIG.

In the initial position, each mechanism is in the state shown in FIG.

That is, at this time, the release switch (not shown) is OFF.
state, the Z-KEN smoke 99 is stopped, and the state switch has a contact 512 closed and outputs a charge completion signal. In this state, the built-in strobe 301 is in the stored position, the -110 is in the down position, that is, the observation position before photographing, the aperture is in the open aperture set position, and the shutter is in the fully charged position.

When a photometer (not shown) determines that a strobe is necessary for photographing, or when the strobe is forcibly used, a pop-up signal is output from a control circuit (not shown). In response to this signal, the sequence motor 99 is reversely rotated, and each of the gears 21, 22, and 23 is rotated by a predetermined angle, as shown by the white arrow in FIG. As a result, the state detection brush 501 is connected to the contact 51 of the state switch.
3 (FIG. 2), thereby outputting a flash-up signal. At the same time, due to the rotation of the one-turn gear 23, the lock release cam 322 rotates the lock release member 320 clockwise as shown in FIG.
0 protrusion 312 opens the guide bin 302. Therefore, the built-in strobe 301 is projected by the elastic force of the pop-up spring 304 and is switched to the light emitting position. FIG. 3 shows the state immediately after the built-in strobe 301 is switched to the light emitting position, and after a set time (for example, several tens of meters) from this state, the sequence motor 99 is rotated in the normal direction, and each mechanism 100, 2
00,300.400 are returned to their initial positions in FIG.

At the pop-up completion position of the strobe 301 in FIG. 3, the mirror-up member 101 of the mirror drive mechanism 100 does not engage with the convex portion of the mirror-up cam 103, and therefore does not move upward, and therefore the cooler 110 is in the down position, that is, when shooting. It is in the front observation position. The open diaphragm setting member 404 of the diaphragm drive mechanism 400 is engaged with the convex portion of the diaphragm control cam 416, as in FIG.
03 is in the lowered position, and the aperture is in the open aperture set position. Shutter charging member 20 of charging mechanism 200
1 does not engage with the convex portion of the charge cam 203, so the first
As shown in the figure, the set lever 210 does not swing upward and is in the fully charged position.

Note that when the built-in strobe 301 is not used, the Z-ken smoke 99 is not reversed and remains in a stopped state.

In the initial position shown in FIG. 1, that is, in a state where the status switch is outputting a charge completion signal, the shutter button (not shown) is pressed and the release switch is turned OFF.
When the N signal is output, the Z-Kensmoke 99 rotates forward,
As shown by the black arrow in FIG. 4, the convex portion of the mirror up cam 103 pushes up the mirror up member 101 as the one-rotation gear 22 rotates. Therefore, the 4 roller 110 is displaced upward against the restoring spring 113 and moved to the retracted position during exposure. Further, due to the rotation of the one-turn gear 23, the convex portion of the aperture control cam 416 opens the open aperture set member 404, so the open aperture set member 404 rotates upward, and the slide Fi403 is pulled by the restoring spring 409. and rises to a predetermined position determined by the aperture control block 401. As a result, the aperture regulating lever 402 is displaced from the position shown by the imaginary line to the position shown by the solid line and stopped at a predetermined position, and the aperture is controlled to the set value. In FIG. 6, the imaginary line ■ indicates the minimum aperture position, and the solid line S indicates the actual control aperture position. Further, the Z-ken smoke 99 stops when the mirror 110 moves to the up position, the state switch contact 511 (FIG. 2) closes, and the mirror signal is output.

On the other hand, due to the rotation of the one-rotation gear 21, the convex portion of the charge cam 203 is connected to the charge member 20 of the charge mechanism 200.
1, and this charging member 201 maintains the downward position. In this state, when the error-up signal is output, this signal causes the front and rear curtains of the shutter to move and release the shutter, and at the same time, the set lever 210 moves from the fully charged position shown by the imaginary line to the fully charged position shown by the solid line. Descends to the complete travel position. FIG. 4 shows the state immediately after the shutter has finished running.

In this shutter release operation, the storage cam 33
The convex portion 4 does not engage with the strobe storage member 330, so the strobe storage member 330 does not rotate, and the strobe 30
1 cannot be forced to retreat.

Further, the convex portion of the lock release cam 322 also does not engage with the lock release member 320. That is, the strobe 301 maintains the light emitting position.

When the shutter finishes running, a shutter trailing curtain run completion signal is output, which causes the sequence motor 99 to rotate forward. Due to this rotation of the Z-ken smoke 99, the convex portion of the storage cam 334 of the strobe drive mechanism 300 is moved into the strobe storage member 33, as shown by the black arrow in FIG.
Press 0 and rotate it counterclockwise. As a result, the pressing arm portion 333 of the strobe housing member 330 displaces the guide pin 302 along the guide slit 303, whereby the guide pin 302 pushes down the protrusion 312 of the locking member 310 against the locking spring 313. Guide Surin) 30
Go back to the left end of 3. The strobe 301 then retreats to the storage position. At this time, the convex portion of the lock release cam 322 engages with the arm portion 323 of the lock release member 320,
The lock release member 320 is rotated counterclockwise against the spring 325 to release the bent portion 321 from the lock member 310.

Note that when the built-in strobe 301 is retracted when the shutter is released, the strobe storage member 330 and the lock release member 320 are driven by the storage cam 334 and the lock release cam 322, respectively.
is in the retracted position, so it has no effect.

On the other hand, since the convex portion of the mirror up cam 103 is released from the mirror up member 101, the mirror sheet 111 swings downward due to the resilient force of the restoring spring 113, and the mirror 11
0 is displaced to the pre-photographing observation position, and the mirror up member 101 is rotated downward. Also, at this time, the convex portion of the charge cam 203 engages with the shutter charge member 201, and the center lever 210 is pushed up from the position shown by the imaginary line in FIG. 5 to the position shown by the solid line. In other words, the shutter is charged. Furthermore, at this time, the aperture control cam 416
The convex portion engages with the opening aperture setting member 404, and the opening aperture setting member 404 swings clockwise. This causes the coupling spring 415 to restore the sliding plate 403 to the restoring spring 40.
9 and lower the aperture regulating lever 420 against a spring (not shown). Therefore, the aperture is switched to the open aperture set position.

In the charging operation shown in FIG. 5, the state switch outputs a flash-up signal in the latter half of charging, but this signal is ignored and the sequence motor 99 is stopped by the charging completion signal.

In this way, one photographing operation is performed, and basically, control is performed in the order of popping up the strobe 301, releasing the shutter, and charging the shutter.

As described above, in this embodiment, the mirror drive mechanism 100, the mirror drive mechanism 100,
The charging mechanism 200 and the aperture drive mechanism 400 are driven by a sequence motor 99 which is a driving source. Therefore, there is no need to provide a special actuator for switching the position of the built-in strobe 301, and the space required can be reduced. Furthermore, the coupling mechanism consisting of the gear train 10 does not have a clutch mechanism such as a planetary gear clutch, and is configured to drive each mechanism 100, 200, 300, and 400 by forward and reverse rotation of the sequence motor 99. There is. Therefore, the overall configuration becomes simple and costs can be reduced. Furthermore, since each mechanism is configured to return to its initial position after the strobe 301 is projected to the light emitting position, it is possible to immediately enter the shooting preparation system after switching the strobe position, and the shutter release operation At the same time, the shutter will be released.

Note that in the present invention, it is not necessary that the aperture drive mechanism 40.0 is also driven by the sequence motor 99.

Further, the definitions of the forward rotation and reverse rotation directions of the sequence motor 99 are not limited to the illustrated embodiment, and in the present invention, the meanings of forward rotation and reverse rotation indicate that these are rotations in mutually opposite directions. Only.

〔Effect of the invention〕

As described above, the present invention is configured such that a driving motor for a cooler drive mechanism or a charging mechanism is used to switch the position of the built-in strobe, without providing a drive source solely for driving the switching of the position of the built-in strobe. . Therefore, according to the present invention, the configuration of the electrically driven camera becomes simple and compact;
This has the effect of reducing costs.

[Brief explanation of drawings]

Each of the figures shows an embodiment of the present invention. Figure 1 shows the initial position, Figure 2 shows the status code detection plate of the status switch, and Figure 3 shows the built-in strobe protruding to the pop-up position. Figure 4 shows the state immediately after the mirror has risen to the retracted position during exposure and the shutter has been released. Figure 5 shows the latter half of the shutter charging. Figure 6 shows the details of each mechanism. It is a graph showing a sequence. 10 ・ 9 00 00 00 01 Gear train motor, life drive mechanism, charge mechanism, strobe drive mechanism, built-in strobe

Claims (4)

[Claims] (1) A motor, a mirror drive mechanism that switches the movable mirror between the observation position before photography and a retracted position during exposure, a charging mechanism that charges the shutter, and a switch between the built-in strobe light emission position and storage position. a strobe drive mechanism that connects the output shaft of the motor to the mirror drive mechanism, the charge mechanism, and the strobe drive mechanism; A drive control device for a camera, which is capable of driving a drive mechanism and a charging mechanism, and is capable of driving the strobe drive mechanism and switching the built-in strobe to a light emitting position by reversing the motor. (2) The connecting mechanism is capable of driving the strobe drive mechanism and switching the built-in strobe to the storage position by normal rotation of the motor.
A drive control device for a camera as described in Section 3. (3) The camera according to claim 1, wherein the output shaft of the motor is connected by the connection mechanism to an aperture drive mechanism that closes down the aperture and switches between running release and open aperture. drive control device. (4) The camera drive control device according to claim 1, wherein the coupling mechanism is composed of gears that are directly connected to each other and does not have a clutch.