FR2650403A1 - OPERATING DEVICE FOR A CAMERA - Google Patents

Abstract

The controller for a camera includes a single motor 99, a mechanism for driving an electronic flash 301, a mechanism for driving a mirror 100, a mechanism for driving a shutter 200, and a link mechanism 10 connecting the single motor 99 to these control mechanisms. The link mechanism 10 operates the mirror control mechanism 100 and the shutter cocking mechanism 200 when the motor 99 is rotated in the forward direction, and causes the flash control mechanism switches the electronic flash 301 to an extended position when the motor 99 is rotated in a reverse direction.

Description

OPERATING DEVICE FOR A CAMERA

  The present invention relates to a device for controlling and driving mechanisms installed in an electrically operated camera. Conventionally, for an electrically operated camera, a construction is known in which a mirror control mechanism, an arming mechanism of a shutter, etc., are electrically actuated by a motor. Although some cameras of this type are constructed in such a way that a built-in electronic flash is electrically controlled so that a position thereof is toggled between an electronic flash (exit) position and a retracted position, this electronic flash incorporated is operated by a drive source other than the motor used to drive the mirror control mechanism and the shutter cocking mechanism. Namely, in some electrically operated cameras, a separate motor is provided

  to change the position of an incorporated electronic flash.

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  In other cameras of this type, although the motor of the mirror control mechanism and the shutter cocking mechanism is also used to retract the built-in electronic flash, an actuator such as a magnet is designed to switch the built-in electronic flash to the extended position. If such an actuator is provided to change the position of an incorporated electronic flash, however, not only the construction of the camera becomes complicated, but also a desired miniaturization of the camera cannot be carried out, and moreover the addition of the actuator causes an increase in the

cost of the camera.

  Therefore, an object of the present invention is to create a control device in which the position of the built-in electronic flash is changed by a drive motor used to drive the mirror control mechanism and the shutter cocking mechanism. , whereby a specific actuator for the built-in electronic flash need not be provided, the construction of the electrically operated camera is simplified and miniaturized, and the cost of the device

photo is reduced.

  In accordance with the present invention. a control device is created comprising a drive source, modification means and drive means. The modification means change the position of an electronic flash between an extended position and a retracted position. The drive means drive a mechanism other than the electronic flash. The other mechanism is for photographic operation of the camera. The drive source is connected to the position modification means and the drive means in such a way that at least the drive means can be controlled when the drive source rotates in a first direction, and the position change means can be controlled to move the electronic flash to the extended position when the drive source rotates in a second direction opposite to the first direction. In the present invention, there is no provision for a specific drive source, that is to say, an actuator for changing the position of the electronic flash, and a drive source for driving mechanisms such as a mirror control mechanism and a shutter cocking mechanism is also used to change the position of the electronic flash. Therefore, in accordance with the present invention, the construction of the electrically operated camera is simplified and miniaturized, and the cost thereof is reduced. The characteristics and advantages of the invention

  will emerge from the description which follows

  by way of example with reference to the accompanying drawings in which: FIG. 1 is a view showing an embodiment of the present invention when the relevant mechanisms of the camera are in an initial position; Figure 2 is a plan view of a status detection coding plate of a status switch; Figure 3 is a view showing the embodiment of Figure 1 when the built-in electronic flash is moved to the extended position; Figure 4 is a view showing the embodiment of Figure 1 when the mirror is driven and the shutter has just been released; FIG. 5 is a view showing a last half of an operation for arming the shutter; and Figure 6 is a graph showing a sequence of the

  operation of each mechanism.

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  The present invention will now be described with reference to the embodiments shown in the drawings. Each drawing shows the mechanisms of a camera to which an embodiment of the present invention is applied, in which Figures 1, 3, 4 and 5 show, respectively, each of the mechanisms when in an initial position, the flash built-in electronics when moving to the extended position, the mirror when tilted to a high (cleared) position, and the shutter when it is

  in the last half of an arming operation.

  In these drawings, the device of the embodiments includes a mirror control mechanism 100, a power-on mechanism 200, an electronic flash control mechanism 300, and a diaphragm control mechanism 400. The control mechanism mirror 100 changes the position of a movable mirror 110 between an aiming position in which a subject to be photographed is observed by the mirror 110 and an erased position in which a shooting is carried out; the arming mechanism 200 performs an arming operation for a shutter (not shown) of the camera; the electronic flash control mechanism 300 changes position an incorporated electronic flash 301 between an extended position and a retracted position; and the diaphragm control mechanism 400 switches a diaphragm (not shown) between a narrowed state and a fully open diaphragm state. A sequence motor-99 is coupled to the mirror control mechanism 100, the arming mechanism 200, the electronic flash control mechanism 300, and the iris control mechanism 400 via a control mechanism. coupling comprising a gear train 10, so by this means

to train these mechanisms.

  The movable mirror 110 is attached to a movable mirror seat 111, which is pivotally supported by a support frame (not shown) provided in the camera, via a pin 112, and it is always pushed towards the aiming position (shown in Figure 1} by a mirror return spring 113. The mirror control mechanism 100 also includes a mirror raising element 101, which is pivotally supported by an axis 102. One end of the mirror mounting element 101 cooperates with a latching axis 114 disposed in the movable mirror seat 111, and a central part of the mirror mounting element 101 is engaged with a mirror mounting cam 103, which is fixedly attached to a single-turn gear 22. The mirror mounting cam 103 and single-turn gear 22 are pivotally supported by a shaft

  support 104 fixed to the support frame.

  In the initial position shown in FIG. 1, the mirror mounting element 101 is in a downwardly rotated position, and the movable mirror seat 111 is pulled by the mirror return spring 113 and is located in a position reached after one turn of it in a clockwise direction. Namely, at this instant, the mirror 110 is located in the aiming position before photographing. If the one-turn gear 22 and the mirror raising cam 103 are rotated, a tip portion 103a of the cam 103 is engaged with the mirror raising member 101, and the mirror raising member 101 is rotated clockwise, whereby the mirror mounting member 101 cooperates with the latching axis 104, and thus the movable mirror seat 111 is rotated in the counterclockwise against the spring force of the mirror return spring 113. As a result, the mirror 110 is tilted into the position

  deleted in which a shot is taken.

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  As shown in FIG. 1, an arming lever 210 of the shutter can pivot between an end of arming position shown by a solid line and a position of end of shutter operation shown by a broken line. The cocking lever 210 is driven in upward rotation by a shutter tensioning element 201 of the cocking mechanism 200, and it is tilted to the end of cocking position, in which a first curtain and a second curtain (not shown) of the shutter are armed. Namely, in this state, an engaging member (not shown) cooperates with the first and second curtains and the cocking lever 210, so that the first and second curtains and the cocking lever 210 are fixed in the end position

of weapons.

  The shutter cocking element 201 is pivotally fixed to the support frame by a pin 202. An end part of the shutter cocking element 201 can be engaged with the cocking lever 210 , and a central part of the shutter cocking element 201 is in contact with a cocking cam 203 which is fixed integrally to a gear in a revolution 2i. The arming cam 203 and the single-turn gear 21 are supported so that they can rotate, by a fixed shaft 204

to the support frame.

  In the inltial position shown in figure 1.

  the shutter cocking member 201 is in a downwardly pivoted position, and the cocking lever 210 is in a top position, i.e., the end of cocking position. In this state. if the shutter is released, as shown in Figure 4, the cocking lever 210 is moved downward by the spring force of a spring (not shown) and engaged with the cocking element of the shutter 201. On the other hand, if the one-turn gear 21 and the arming cam 203 have rotated so that the tip portion 203a of the arming cam 203 is

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  engaged with the arming element 201, as shown in FIG. 5, the arming element 201 rotates clockwise, whereby the arming lever 210 is pushed upward, and so the shutter is armed. The incorporated electronic flash 301 can be toggled between an extended position, i.e., a flash operating position, and a retracted position. The built-in electronic flash 301 is located in the retracted position in FIG. 1, in the extended position in FIGS. 3 and 4, and it is moved from the extended position to the position

reentered in Figure 5.

  The built-in electronic flash 301 is provided with a guide pin 302 inserted in a guide groove

  303 formed on the support frame. Consequently.

  the guide pin 302 is moved along the guide groove 303, so that the electronic flash 301 is moved between the extended position and the retracted position. The built-in electronic flash 301 is always pulled by a return spring 304 in a direction in which the electronic flash is moved from the retracted position,

  that is, in the direction of the extended position.

  The electronic flash mechanism 300 for effecting a position change operation of the built-in electronic flash 301 includes an engagement element 310, a trigger element 320, and a retraction element of the flash 330. The engagement element 310 pivots about an axis 311 fixed to the support frame, and the element

  trigger 320 is also supported in one way.

  pivoting, by the axis 311. The end part of the engagement element 310 is equipped with a projection 312 which can cooperate with the axis' of guide 302, and the other end part of the engagement element 310 is connected to an engagement spring 313 also connected to the support frame, whereby engagement element 310 is

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  always pulled counterclockwise

watch, seen in the drawings.

  The triggering element 320 is provided with a rounded part 321 cooperating with the latching element 310, and an arm part 323 capable of cooperating with a triggering cam 322, which is fixedly attached to a gear in a revolution 23. The trigger cam 322 and the single-turn gear 23 are pivotally supported by a support shaft 324 fixed to the support frame. A part close to the rounded part 321 of the trigger element 320 is fixed to a latching arm 332 of the reentry element of the

flash 330, by a spring 325.

  The flash reentry element 330 is supported by a

  pivotally by an axis 331 fixed to the support frame.

  A pressure arm 333 of the flash retractor element 330 cooperates with the guide axis 302 of the electronic flash 301, and a latching arm 332 extended in the opposite direction to the pressure arm 333 can cooperate with a cam retraction 334, which is fixedly attached to the gear in one revolution 23 in the same way as the cam

trigger 322.

  In the initial position shown in Figure i, the projection 312 of the latching member 310 is in contact with the guide pin 302 to the electronic flash 301, so that the electronic flash 301 is in the retracted position. In this state, if the trigger cam 322 is rotated counterclockwise in the drawing and if the tip portion 322a of the trigger cam 322 is pressed against the arm portion 323 of the 'trigger element 320 as shown in Figure 3, the trigger element 320 rotates clockwise, whereby the rounded part 321 presses the latch element 310

  so that it turns clockwise.

  As a result, the projection 312 of the trigger element 320 triggers the guide axis 302, and thus the electronic flash 301 is pulled by the return spring 304 and moved to the right in the drawing towards the

exit position.

  The diaphragm control mechanism 400 includes a control block 401 including a circuit for operating a diaphragm, a diaphragm narrowing lever 402, a sliding plate 403, and an element for opening in

the entire diaphragm 404.

  The sliding plate 403 is equipped with two guide slots 405 and 406, which cooperate with the guide pins 407 and 408 fixed to the support frame to guide the sliding plate 403 when it moves up and down on the drawing. The sliding plate 403 is always pulled upwards by a return spring 409, and a projection 411 formed on an upper end of the sliding plate 403 cooperates with a lever 412 of the diaphragm control block 401, what palr what, when the sliding plate 403 is moved up and down, lever 412 is moved pcar

order the diaphragm.

  A projection 413 formed on the central part of this sliding plate 403 is; encienchee with an upper surface of the diaphragm reduction lever 402, to limit upward movement of the lever

  diaphragm narrowing 402. The! evicr dc-

  diaphragm narrowing 402 is pushed upward by a spring (not shown), that is, in a seris in which the diaphragm is narrowed. In Figure 1, the diaphragm shrink lever 402 is in the lowest position, i.e., in the position

total opening of the diaphragm.

  The fully open positioner 404 is pivotally supported by a pin 414 attached to the support frame, and an end portion of the 404 is connected to the plate sliding

2650403

  403 by means of a connecting spring 415. A central portion 404a of the element for placing the fully open position of the diaphragm 404 is engaged with a diaphragm control cam 416, which is fixedly attached to the gear with a turn 21 in the same way as a cam

of arms 203.

  In the initial position shown in FIG. 1, the lever for placing the fully open diaphragm position 404 cooperates with a tip portion 416a of the diaphragm control cam 416, and thus it is in a position offset towards the low. At this instant, the sliding plate 403 is pulled by the connecting spring 4i5

  to be positioned at the lowest position of this

  ci, and therefore, the diaphragm shrink lever 402 is in the lower position, i.e., a fully open diaphragm position, and the lever 412 of the diaphragm control block 401 is located in a fully open position of the diaphragm. Namely, the diaphragm is placed in a fully open state. In this state, if the one-turn gear 21 and the control cam 416 are rotated in a clockwise direction in the drawing, the element for placing the fully open position of the diaphragm 404 is released from the tip portion 416a of the diaphragm control cam 416 and rotates counterclockwise as shown in FIG. 4, and as a result that the sliding plate 403 is released from the spring 415 and pulled by spring 409 to move upwards, so that the diaphragm shrink lever 402 and the lever 412 of the diaphragm control block 401 are moved upwards, whereby a

  predetermined opening is obtained.

  The mechanisms 100, 200, 300 and 400 are driven by a single drive source, i.e., the sequence engine 99, in this embodiment. The gear train 10 connecting these mechanisms 100, 200, 300 and 400 to the sequence motor 99 comprises a pinion 12 fixed to an output shaft 11 of the sequence motor 99, reduction gears 13 and 14, an idler gear 15 , and the one-turn gears 21, 22 and 23. The pinion 12 meshes with the reduction gear 13, and thus with the reduction gears 13 and 14 reduce the number of turns of the pinion 12, and transmit the number of turns reduced to idler gear 15, which meshes with the gear at one revolution 21. The gears at one revolution 21, 22, and 23 have the same number of teeth, and the gear at one revolution 21 meshes with the gear at one turn 22, which meshes with the gear at one turn 23. Therefore, the gears at one turn 21, 22,

  and 23 rotate at the same angle relative to each other.

  The one-turn gear 22 is equipped with a state detection brush 501, which is arranged to face a state detection coding plate 502 shown in FIG. 2, and which is capable of coming into contact with three contacts 511, 512, and 513 formed on a coding plate 502; that is to say, these contacts 511, 512, and 513 are in sliding contact with the brush 501. Namely, a state switch is produced by the state detection brush 501 and the contacts 511. 512, and 513, so that the states of the built-in electronic flash 301, the mirror control mechanism 100, the arming mechanism 200 and the diaphragm control mechanism 400 are detected by contact between the brush 501 and the contacts 511 , 512, and 513. The contact 512 located between the contacts 511 and 513 is used to put the mechanisms 100, 200, 300, and 400 in their initial positions; the contact 511, located in an upper position in the drawing, serves to stop the mirror in an upper position as a function of a mirror rise signal; and the contact 513, located at the lower position in the drawing, is used to stop a counter-rotation of the motor 99 when an ejection signal to exit the

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  built-in electronic flash 301 is received while the

  motor 99 is rotated in the opposite direction.

  An operation of the device described above will

  be described below with reference to Figure 6.

  In the initial position, the mechanisms 100, 200, 300 and 400 are positioned in the state as shown in FIG. 1. Namely, in this state, a trip switch (not shown) is cut, the sequence engine 99 is stopped, and the contact 512 is in contact with the brush 501 so that the status switch issues an end of arming signal. In this state, the built-in electronic flash 301 is retracted, the mirror 110 is in the low position, that is to say, the position of aiming before photography, the diaphragm is placed in a fully open diaphragm position, and the shutter is placed

  in an end of arming position.

  When it is estimated by a photometry device (not shown) that an electronic flash is necessary for photographing, or when the electronic flash is to be used intentionally, an ejection signal is output from a control circuit ( not shown), and upon reception of the ejection signal, the sequence motor 99 is driven in opposite direction from the initial position, and thus each of the gears in a revolution 21, 22 and 23 is driven in rotation from a predetermined angle, as shown by white arrows in FIG. 3. As a result, the state detection brush 501 comes into contact with the contact 513 (FIG. 2) of the state switch, and thus a signal to exit the electronic flash 301 is out. At the same time, the one-turn gear 23 is rotated so that, as shown in FIG. 3, the trigger cam 322 rotates the trigger element 320 clockwise and that the latching element 310 is rotated due to an engagement with the rounded portion 321 and the latching element 310, whereby the projection 312 of the latching element 310 releases the axis guide 302. Consequently, the built-in electronic flash 301 is moved by the spring force of the ejection spring 304, and tilted in the extended position. Figure 3 shows the status immediately after the built-in electronic flash 301 has been flipped to the extended position. after a given predetermined time (approximately 10 ms, for example) has elapsed, the sequence motor 99 is rotated in the forward direction, and thus the mechanisms 100, 200, 300 and 400 are brought back to their initial positions, as shown in the

figure 1.

  In the fully ejected position of the electronic flash 301 shown in FIG. 3, since the mirror raising element 101 of the mirror control mechanism is not engaged with the tip part 103a of the mirror raising cam 103, the mirror raising element 101 is not moved upwards, and thus the mirror 110 is in the low position, that is to say, the position of aiming before photography. The element 404 demises diaphragm fully open position of the diaphragm control mechanism 400 is engaged with the tip portion 416a of the diaphragm control cam 416, as shown in Figure 1; and thus the sliding plate 403 is in the lowest position and the diaphragm narrowing lever 402 is placed in the fully open position of the diaphragm. In addition, since the arming element of the shutter 201 of the arming mechanism 200 is not engaged with the tip portion 203a of the arming cam 203, the arming element of the shutter 201 is not driven in upward rotation, as shown in FIG. 1, and thus the cocking lever 210 is in the position of

end of arming.

  It should be noted that, when the electronic flash 301 is not used, the sequence engine 99 is not

  driven in the opposite direction but remains in the stopped state.

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  At the initial position shown in Figure 1, that is

  say, in a state in which the state switch issues an end of arming signal, if a shutter button (not shown) is pushed down, so that the trigger switch outputs a signal running, the sequence motor 99 is rotated in the forward direction, whereby the one-turn gear 22 is rotated as shown by a black arrow in Figure 4, and thus the tip portion 103a of the mirror raising cam 103 pushes the mirror raising element 101 upwards. As a result, the mirror 110 is moved upward against the force of the return spring 113 and it is moved to the erasing position thereof in

  which a shot can be taken.

  At the same time, due to the rotation of the gear in one revolution 21, the tip portion 416a of the diaphragm control cam 416 releases the member for fully opening the diaphragm 404, and therefore , the bet element! fully open position of the diaphragm 404 is rotated upwards by the spring 415, and thus the sliding plate 403 is pulled by the return spring 409 and is moved upwards to a position to which it is limited by the diaphragm control block lever 412 401. As a result, the diaphragm shrink lever 402 is moved from a position shown by a broken line to a position shown by a solid line, and stopped at a position predetermined, this by

  whereby the diaphragm is controlled at a fixed value.

  It should be noted that, in FIG. 6, the broken line I shows the state of a minimum diaphragm and the solid line S shows the state of an actual control of the diaphragm. The sequence motor 99 is stopped when the mirror 110 is moved to a higher position and the contact 511 (FIG. 2) of the status switch comes into contact with the brush 501, so that an up signal

mirror came out.

  On the other hand, the tip part 203a of the cocking cam 203 is not engaged with the cocking element 201 of the cocking mechanism 200, by a rotation of the gear in one revolution 21, and thus the arming element 201 remains in the lower position. In this state, if a mirror rise signal is output, the first and second shutter curtains are operated in accordance with this signal, whereby the shutter is released, and at the same time, the lever Arming 210 is moved down from the end of arming position shown by a broken line to the end of operating position shown by a solid line. Figure 4 shows a state immediately after

  the shutter operation is completed.

  In this shutter release operation, the point part 334a of the reentry cam 334 is not engaged with the flash reentry element 330, '. And therefore, the flash reentry element 330 n is not rotated and the electronic flash 301 has not returned. In addition, the tip portion 322a of the trigger cam 322 is not engaged with the trigger element 320; that is, the electronic flash 301 remains in the extended position. When the shutter operation is completed, an end of operation signal from the second curtain is output, whereby the sequence motor 99 is rotated in the forward direction, and thus the tip portion 334a of the reentry cam 334 of the electronic flash mechanism 300 causes the flash reentry member 330 to be rotated counterclockwise, as shown by black arrows in Figure 5. It as a result that the press arm 333 of the flash retracting member 330 moves

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  the guide pin 302 along the guide groove 303, whereby the guide pin 302 cooperates with the projection 312 of the engagement element 310, pushes this engagement element 310 down against the force of the engaging spring 313, and it is moved to the left end portion of the guide groove 303, and thus the electronic flash 301 is moved to the retracted position. At the same time, the tip portion 322a of the trigger cam 322 is engaged with the arm portion 323 of the trigger element 320, so that the trigger element 320 is rotated counterclockwise of a watch against the force of the spring 325, and thus, the rounded part 321 is

  disengaged from the engagement element 310.

  It should be noted that, if the built-in electronic flash 301 has been retracted, then when the shutter is released, although the flash reentry element 330 and the trigger element 320 are driven by the reentry cam 334 and the trigger cam 322, respectively, these elements 330 and 320 practically do not work, since the

  electronic flash 301 is in the retracted position.

  On the other hand, since the tip portion 103a of the mirror raising cam 103 is released from the mirror raising element 101, the mirror seat 111 is driven in downward rotation by the spring force of the spring. 113, and thus the mirror 110 is moved to the aiming position before shooting and the mirror raising element 101 is driven in downward rotation. At the same time, the tip portion 203a of the cocking cam 203 is engaged with the cocking member of the shutter 201, so that the cocking lever 210 is pushed upward from a position shown by a broken line to a position shown by a line

  continues to Figure 5 and so the shutter is armed.

  In addition, at this time, the tip portion 416a of the diaphragm control cam 416 is engaged with

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  the element 404 for placing the diaphragm in the fully open position, and thus the element 404 for placing the diaphragm in the fully open position is rotated in a clockwise direction. Therefore, the connecting spring 415 pulls the sliding plate 403 down again against the force of the return spring 409, and pulls the diaphragm shrink lever 412 down against the force of a spring (not shown) , and thus the diaphragm is placed in the open position

total diaphragm.

  Note that in the arming operation shown in Figure 5, although the status switch outputs an eject signal in the last half of the arming operation, this signal is neglected, and the sequence engine

  99 is stopped by the end of arming signal.

  As described above, when a photography operation is performed, basic commands are performed for ejection of the electronic flash 301, triggering of the shutter, and arming of

the shutter, in that order.

  Thus, as described above, the embodiment is constructed in such a way that the operation of switching the integrated electronic flash 301 between the extended position and the retracted position is carried out by the sequence engine 99, which is also a drive source for the mirror control mechanism 100, the arming mechanism 200, and the iris control mechanism 400. Therefore, a specific actuator for changing the position of the built-in electronic flash 301 has not need to be planned, and so no

  space is not required for such an actuator.

  In the above-described embodiment, the drive mechanism comprising the gear train 10 is not designed with a clutch mechanism such as a planetary gear clutch, and is constructed to drive the mechanisms 100, 200, 300 and 400 by

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  forward and backward rotations of the sequence engine 99.

  Therefore, the construction of the device of the embodiment is simplified, and the cost of manufacturing the

device can be reduced.

  In addition, the embodiment is constructed in such a way that, after the electronic flash 301 is moved to the extended position, each of the mechanisms 100,, 300 and 400 is returned to its initial position. Therefore, the camera is in a ready-to-shoot state immediately after the position of the electronic flash 301 has been changed, and therefore, the shutter can be operated again immediately.

  after the shutter was released once.

  It should be noted that, in the present invention, the diaphragm control mechanism 400 need not be driven by the sequence motor 99, and that a design of the drive in forward rotation and of the backward rotation drive of the sequence motor 99 is not limited to the embodiment shown in the drawings. Namely, the terms forward rotation and reverse rotation as used for the present invention simply mean that these senses of

  rotation are opposite to each other.

  Although the embodiments of the present invention have been described above, with reference to the accompanying drawings, of course many modifications and changes can be made by persons experienced in this technique without departing from

the scope of the invention.

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Claims (16)

  1. A control device for drive mechanisms installed in a camera, said drive device comprising; a drive source (99), means (300) for changing a position of an electronic flash (301) between an extended position and a retracted position, and means for driving a mechanism other than said electronic flash, said other mechanism being provided for a photographing operation of said camera, said drive source being connected to said position change means and said drive means in such a way that at least said drive means can be controlled when said drive source is rotated in a first direction, and said position change means can be controlled to move said electronic flash to the extended position when said drive source is rotated in a second opposite direction to said first sense.   2. Device according to claim 1, characterized in that said drive means control a mirror control mechanism (1001) for changing a position of a movable mirror between an aiming position in which a subject to be photographed is observed through said mirror and a cleared position in which a socket view can be performed.   3. Device according to claim 1, characterized in that said drive means control an arming mechanism (200) to perform an arming operation   a shutter of said camera.   4. Device according to claim 1, characterized in that said drive means control a diaphragm drive mechanism (400) to change a state of a diaphragm between a First state in which said 2650403   diaphragm is narrowed and a second state in which said diaphragm is fully open.   5. Device according to claim 1, characterized in that it comprises means (10) for connecting said drive source to said means for changing position. 6. Device according to claim 5, characterized in that said connecting means are capable of controlling said position change means (300) to move said electronic flash to the retracted position when said drive source is rotated in said first direction when said flash   electronics is in the extended position.   7. Device according to claim 5, characterized in that said connecting means are provided with a main gear (23) for controlling said position change means (300), and at least one secondary gear (22,21) to control said drive means and which meshes with said gear main (23).   8. Device according to claim 7, characterized in that said main gear (23) and gear   secondary (22,21) have the same number of teeth.   9. Device according to claim 7, characterized in that said connecting means are provided with a first cam fixed to said main gear (23) and a second cam fixed to said secondary gear (22,21), said first and second cam having tip parts capable of cooperating with said position change means (300) and said drive means, respectively.   10. Device according to claim 9, characterized in that said tip part of said first cam cooperates with said position change means (300) and said tip part of said second cam does not cooperate with said means drive (300) when said drive source (99) is rotated in said second direction from a position   initial of said drive source (99).   11. Device according to claim 9, characterized in that said tip portion of said first cam does not cooperate with said position change means (300) and said tip portion of said second cam cooperates with said means of drive when said drive source (99) is rotated in said first direction, so that a position of said electronic flash is not changed and said other mechanism is activated.   12. Device according to claim 1, characterized in that the said position change means comprise a latching element, a triggering element and a flash reentry element, the said latching elements, triggering elements and elements flash retractor being supported in a manner pivotable by said camera, said trigger element and said flash retractor element being able to co-operate with said electronic flash, and said trigger element being able to cooperate with said interlocking element.   13. Device according to claim 12, characterized in that said connecting means are provided with a gear for controlling said position change means, and in that a trigger cam is fixed to said gear, said cam trigger cooperating with said trigger member so that said trigger member and said latch member are rotated together, whereby said electronic flash is moved to its said extended position when said drive source (99) is driven in rotation in said second direction.   14. Device according to claim 13, characterized in 35. that said connecting means are provided with a reentry cam fixed to said gear, said reentry cam 22 2Z650403   being capable of cooperating with said reentry member so that said reentry member is moved to return said electronic flash to said retracted position when said drive source (99) is rotated in said first direction. 15. Device according to claim 1, characterized in that it further comprises a state switch (500) for detecting the states of said electronic flash and of said other mechanisms.   16. Device according to claim 15, characterized in that said state switch (500) comprises a state detector brush fixed to said connecting means, and a state detection coding plate (501) facing the said means of connection and having contacts in sliding contact with said brush, whereby a state of said electronic flash and said other mechanisms is detected by   a contact between said baiai and said contacts.