JP2575335B2 - Shutter device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter device for a camera having an automatic focusing device.

[0002]

2. Description of the Related Art Conventionally, as shown in Japanese Patent Application Laid-Open No. 58-43435, a mechanism has been proposed in which the focus adjustment operation and the exposure operation of a camera are controlled by using the same operating member. .

[0003]

In the mechanism of the prior art described above, when the operating member controls the exposure operation, an urging force related to the focus adjustment operation is applied, and the biasing force acts as a load, so that the proper operation is performed. There was a problem that exposure control could not be performed, stable opening and closing of the shutter could not be guaranteed, and mass productivity was poor. Therefore, it is conceivable to give a large driving force enough to overcome the urging force, but for that purpose, a large power source is required, and there is an inconvenience that miniaturization of the camera is hindered.

[0004] In view of the above problems, an object of the present invention is to provide a shutter device capable of performing a proper shutter operation without increasing the size of a power supply.

[0005]

In order to achieve the above object, a shutter device according to the present invention controls a movement of a moving member for performing a focus adjusting operation and a movement of the moving member by engaging with the moving member. An operating member, a moving member is disengaged from the operating member, a focus adjusting position determining member that determines a focus adjusting position according to the disengaged position, and the operating member is moved from the operating member by the focus adjusting position determining member. And a shutter blade that opens and closes in conjunction with the movement of the operating member after the moving member is disengaged.

[0006]

In the shutter device having the above-described structure, the focus adjustment operation and the exposure operation are controlled by using the same operation member. However, when the operation member controls the exposure operation, the shutter operation is related to the focus adjustment operation. No biasing force acts. Therefore, appropriate exposure control, stable opening and closing of the shutter blades, and improvement in mass productivity can be achieved without increasing the power supply.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 are perspective views showing the appearance of the camera of the present embodiment. FIG. 1 shows a normal photographing mode, FIG. 2 shows a close-up photographing mode, and FIG. 3 is an exploded perspective view showing the arrangement of its internal structure. Indicates the state of the normal shooting mode. In FIG. 3, reference numeral 1 denotes a rotor serving as an operating member, which is rotatably supported by a pin provided on a shutter base plate (not shown) through a central hole 1a and is rotated counterclockwise by a spring 2 hooked on the hole 1b. It is urged to come into contact with a stopper (not shown) and stops in the state of FIG. The rotor 1 further includes a spiral conductive pattern 1c formed on one surface thereof, a braking portion 1d abutting a vertical bent portion 6b of a set plate 6 described later, and a moving member described later around the other side. AF (autofocus) claws 1e, 1f, 1g are formed to abut against a vertical bent portion 16f 'of a distance control lever 16 to stop the operation of the distance control lever 16, and a blade drive pin is provided on the front surface thereof. 3 is crimped together.

In the state shown in FIG. 3, when the conduction pattern 1c of the rotor 1 is energized by an electric circuit (not shown), the rotor 1 moves clockwise against the urging force of the spring 2 in accordance with Fleming's left hand rule. A magnet and a yoke (not shown) are arranged at intervals before and after the rotor 1 so as to rotate. The blade drive pin 3 is fitted into each of the cam grooves 4b and 5b of the shutter blades 4 and 5, and collides with a cam surface 21d of an FA lever 21 described later at the time of flash photography. The shutter blades 4 and 5 are rotatably supported by pins provided on the shutter base plate via holes 4a and 5a, respectively. When the rotor 1 rotates, the blade driving pins 3 open and close the blades. Will be

The set plate 6 has a pair of long grooves 6
a, 6a and pins 7, 7 protruding from the shutter base plate are fitted to be held so as to be slidable in the left-right direction in the figure and urged leftward by a spring 8 hooked on the protruding portion 6c. 3 is slid rightward against the force of the spring 8 by a winding charging mechanism (not shown), and is locked at the charging position in FIG. 3 by a locking member (not shown). Further, the set plate 6 is provided with the upright bent portion 6b as described above.
Is in contact with the braking portion 1d of the rotor 1 and serves to regulate the movement of the rotor 1 when the rotor is energized, and its rack portion 6d meshes with a governor mechanism (not shown) to assure uniform movement. The upright bent portion 6e comes into contact with an arm portion 15c of a lens barrel connecting lever 15, which will be described later. Further, a contact piece (not shown) is integrally held to control the camera sequence by a circuit pattern (not shown). The running position of the set plate 6 is input to the IC.

Reference numeral 9 denotes a distance ring, which is rotatably fitted to a lens barrel base plate (not shown) by an inner diameter portion 9a, and has a charging projection 9b, a claw 9c, a hook 9d, and a gear 9e on its outer peripheral surface. And a spring 10 hung on the hook 9d.
Is biased to rotate clockwise in the figure,
The charging projection 9b is charged by a charging mechanism (not shown).
Is rotated counterclockwise against the force of the spring 10 through the claw portion 9c.
Are engaged so as to be locked at the charge position. The gear portion 9e meshes with a gear portion 14b of a stop wheel 14, which is a focus adjustment position determining member described later, and has a circle on its rear surface portion. Three feeding cam parts 9 at equal intervals on the circumference
f, and three projections 11a provided on a part of the taking lens barrel 11 are pressed against the cam portion 9f by springs (not shown) so that the taking lens is extended according to the amount of rotation of the distance ring 9. Has become.

The stop claw 12 is rotatably supported on the lens barrel base plate by a hole 12a, and is urged to rotate counterclockwise in the figure by a spring 13 hooked on a hook portion 12d, but is not shown. 3, and has a driving pin 12c outside the claw portion 12b for locking the distance ring 9 as described above. 3 moves to a position to the left from the charge position in FIG. 3, the stop claw 12 contacts the left end of the set plate 6 and rotates the stop claw 12 clockwise to move the claw 12 b and the claw 9 c of the distance ring 9. Is released.

The stop wheel 14 is rotatably supported by a structural member (not shown) of the camera by a shaft 14a, and its gear portion 14b meshes with the gear portion 9e of the distance ring 9 to rotate the distance ring 9 as described above. The movement is transmitted to the stop wheel 14. Further, the stop wheel 14 is provided integrally with a sector having a long-range claw 14c, a middle-range claw 14d, and a short-range claw 14e. It is configured to be brought into contact by the rotation of the vehicle 14. The lens barrel connecting lever 15 is rotatably supported by the structural member through a hole 15a, and a vertical bent portion 15b at one end thereof contacts a notch portion 16d of the distance control lever 16, and an arm portion 15c at the other end.
Are in contact with the upright bent portion 6e of the set plate 6 as described above.

The distance control lever 16 which is a moving member
Is a shaft 50a projecting from the structural member in the long groove 16a.
Are slidably and slidably supported between a shaft 50b, which is also provided on the structural member, and a pin 20c of the movable lever 20, which will be described later. In the state shown in FIG. 3, the lower side 16b abuts on the shaft 50b to position the distance control lever 16, and the upper side 16c and the pin 20c are separated from each other. I have. As described above, the distance control lever 16 is formed with the notch 16d and the upright bent portions 16f, 16f 'and 16g.

Reference numeral 18 denotes a proximity reset lever, which is rotatably supported on the structural member by a hole 18a, and is turned counterclockwise in the figure by a strong spring 19 hooked on a hole 18e provided in one arm 18b. The arm portion 18b is urged to move.
The vertical bent portion 33c at the lower end of the reset lever 33 described later
In the state shown in FIG. 3, the distal end portion 33d of the reset lever 33 has a protrusion 36c of the flash device holding plate 36 described later.
And stopped. Further, the proximity reset lever 18 comes into contact with an arm portion 18c which is separated from the end portion 6f of the set plate 6 at a slight distance in a charged state of the set plate 6 in FIG. 3 and an arm portion 20b of a movable lever 20 described later. It has a vertical bent portion 18d. The movable lever 20 is rotatably supported by the structural member through a hole 20a, and the arm 20b at one end thereof is in contact with the proximity reset lever 18 as described above, and the pin 20c is swaged at the other end. The pin 20c stops the rotation of the distance ring 9 when the upper side 16c of the distance control lever 16 hits during the distance adjustment operation, and controls the extension amount of the photographing lens.

Reference numeral 21 denotes an FA (flash auto) lever, which is rotatably supported by the structural member through a hole 21a, and which contacts an upright bent portion 31c of the flash device detecting lever 31, and a distance signal described later. Pin 2 of lever 22
It has a cam groove 21c in which the 2c is fitted, and a cam portion 21d for regulating the position of the drive pin 3 of the rotor 1 for driving the shutter blades 4 and 5. However, in the state of FIG. 3, the cam portion 21d and the drive pin 3 are in a non-contact state due to the contact between the upright bent portion 31c of the flash device detection lever 31 and the arm portion 21b. The distance signal lever 22 has a shaft 22a at one end fitted into a hole 24b of the ISO switching lever 24, and a hole 22b.
b is urged to rotate in the counterclockwise direction in the figure by a spring 23, and the pin 22c at the other end is fitted in the cam groove 21c of the FA lever 21 as described above. Is for transmitting the displacement of the distance control lever 16 to the distance signal lever 22 by contacting the upright bent portion 16f of the distance control lever 16 to the distance signal lever 22. When the camera is not in the flash photography mode, the distance control lever 16 You have moved out of contact.

The ISO switching lever 24 is rotatably supported around a hole 24a which is fitted with a shaft 28b of a close-up lever 28, which will be described later. A hole 24b into which the shaft 22a fits is
At the other end, there are provided arm portions 24c fitted into the concave portions 25d of the ISO switching knob 25, respectively. The IS
The O switching knob 25 is positioned by an operation knob 25a protruding from the upper surface of the camera body, an ND filter 25b for reducing the amount of light incident on the light receiving element 26 in conjunction with the ISO switching operation, and a click spring 27. A plurality of click grooves 25c and the concave portion 25d are integrally formed on the lower surface thereof, and are supported by a known means so as to be slidable in the horizontal direction in the figure. The part 25b is located.

The close-up lever 28 is supported by a pair of long grooves 28a fitted with a shaft 29 provided on a part of the structural member so as to be slidable in the left-right direction in the drawing. A shaft 28b fitted into the hole 24a of the switching lever 24 and a vertical bent portion 3 of the flash device holding plate 36 described later.
6d and a step portion 28c in contact therewith, and is urged to slide rightward in the figure by a spring 30 hooked on a protruding portion 28d at the other end. The flash device detection lever 31
Has an L-shape, is rotatably supported on the structural member by a hole 31a, and is urged to rotate counterclockwise in the figure by a spring 32 hooked on a spring hook hole 31b.
The high cam edge 31d and the low cam edge 31 of the arm at one end.
e, 31f are protrusions 4 on the lower surface of the flash device frame 41 described later.
1b, and the upright bent portion 31c provided at the tip of the other arm has the FA lever 2 as described above.
One arm 21b is in contact.

The reset lever 33 is supported by the shaft 34 provided on a part of the structural member so as to fit in a pair of long grooves 33a so as to be slidable up and down in the figure, and is hung on a spring hook 33b. The arm 18b of the proximity reset lever 18 contacts the upright bent portion 33c provided at the lower end thereof as described above, and is urged to slide downward by the weak spring 35. Spring 19
And is pushed upward by the counterclockwise turning force of Further, a top end portion 33d pressed in the state shown in FIG. 3 by the protrusion 36c of the flash device holding plate 36 above the reset lever 33 and projects outward from the through hole of the camera body A in the close-up shooting mode. The display unit 33e has a display unit 33e that informs the photographer of the close-up shooting mode and presses the protruding portion to cancel the close-up shooting mode.

The flash device holding plate 36 is pivotally supported on the structural member by a hole 36a, is rotatable between stoppers 38 and 39, and is counterclockwise in the figure by a strong spring 37 hooked on a spring hook 36b. It is biased to rotate. The flash device holding plate 36 has the protrusion 3
6c abuts against the stoppers 38 and 39 to limit the rotation thereof, and the upright bent portion 36d provided on the projecting portion 36c.
Abuts on the step portion 28c of the close-up lever 28, and moves the close-up lever 28 to the left in the figure in conjunction with the movement of the flash device frame 41, which will be described later, in the close-up photographing mode, and holds it. And a pair of shafts 3 protruding from the upper surface thereof.
6e is fitted into the guide groove 41a of the flash device frame 41,
Further, it has a projection 36f and a click spring 40 which are in contact with the cam portions 44e and 44f on the lower surface of the finder block 44 to be described later and make the finder block 44 interlock with the movement of the flash device holding plate 36.

The flash device frame 41 has a built-in light emitting tube, reflector, and the like (not shown).
1a, a pair of shafts 36e of the flash device holding plate 36 are fitted and held so as to be slidable in the left-right direction in the figure, and a projection 41b projecting from the lower surface thereof is provided with the flash device as described above. Cam edges 31d, 31e, 3 of the detection lever 31
1f, the flash device detection lever 31 is displaced in accordance with the position of the flash device frame 41, and has click grooves 41c and 41d which engage with the click springs 40 of the flash device holding plate 36. Similarly, a step portion 41e on one side edge can come into contact with the protrusion 36f. 42
Is a contact piece in which a hole 42a is fixed to the lower surface of the flash device frame 41 with a screw or the like. The contact piece 42b slides on the patterns 43a and 43b of the circuit board 43 by the movement of the flash device frame 41. An IC (not shown) of the camera is notified of the shooting mode of the camera. Also, the flash device frame 4
1 has a charging contact (not shown), which is configured to start charging the light-emitting capacitor of the flash device in synchronization with the on / off timing of the patterns 43a and 43b by the contact portion 42.

The finder block 44 is rotatably held on the structural member by a pair of shafts 44a, and is urged to rotate counterclockwise in the figure by a spring 45 hooked on a spring hook 44b. An autofocus light receiving window 44c and a finder window 44d are provided in parallel on the front surface, and the cam portions 44e and 44f provided on the lower surface thereof come into contact with the protrusion 36f of the flash device holding plate 36 as described above. In the normal photographing mode shown in FIG. 3, it is in contact with the cam portion 44e.

Next, the operation of this embodiment having the above configuration will be described. First, a description will be given of the normal photographing mode. The set charging plate 6 slides rightward against the force of the spring 8 by a winding charging mechanism (not shown), and is locked at a charging position shown in FIG. 3 by a locking member (not shown). Further, at the same time, the distance ring 9 is rotated counterclockwise against the force of the spring 10, and the claw portion 12b of the stop claw 12 is engaged with the claw portion 9c to be locked at the charging position. FIG. 4 is a front view showing the charged state of the main part of the focus adjustment unit including the distance ring 9. When the user holds the camera toward the subject and presses a release button (not shown) to the first stroke, the distance to the subject is stored in the camera IC by known distance measuring means. When the set plate 6 is pushed to the stroke, the set plate 6 starts running at a constant speed by the operation of a governor mechanism (not shown) by the force of the spring 8 in the left direction. The start signal of the set plate 6 is input to the IC by sliding the contact piece (not shown) on the circuit pattern, and the distance adjusting operation is started.

Here, when the subject is at a long distance, the start signal of the set plate 6 is
Since the conduction pattern 1C is not energized, the rotor 1 remains at the position shown in FIGS. On the other hand, the distance control lever 16 starts moving at a constant speed diagonally upward and to the right from the state shown in FIG. The pawl 1e of the rotor 1 comes in contact with the rotor 1 and stops in the state shown in FIG. At this time, the contact direction of the upright bent portion 16f 'of the distance control lever 16 with respect to the contact surface of the claw 1e of the rotor 1 is directed to the direction of the rotation axis of the rotor 1. It does not rotate.

The set plate 6 further travels from the state shown in FIG. 5, and the left end thereof contacts the drive pin 12c of the stop claw 12, rotates the stop claw 12 clockwise, and moves the stop claw 12 with the claw 12b of the stop claw 12. The lock of the ring 9 with the claw 9c is released, and the distance ring 9 is rotated clockwise by the force of the spring 10, and the stop wheel 14 which is gear-coupled with the distance ring 9 is rotated counterclockwise to stop the stop. The long-distance claw 14c of the vehicle 14 hooks the upright bent portion 16g of the distance control lever 16 so that the distance control lever 16 is pivoted about the shaft 50a.
Until c contacts the pin 20c of the movable lever 20, it is rotated counterclockwise and stopped in the state shown in FIG. Therefore, in this state, the taking lens barrel 11 is extended by the cam portion 9f of the distance ring 9 and is set at a long distance position.
In the state shown in FIG. 6, the distance control lever 16 is turned in the counterclockwise direction by the counterclockwise rotation.
The contact between f 'and the pawl 1e of the rotor 1 has been released.

Next, when the set plate 6 further travels leftward from the state shown in FIG. 6, a rotor energizing signal is output to the IC by a contact piece (not shown), and the rotor 1 resists the force of the spring 2 as shown in FIG. It rotates in the clockwise direction, and its braking portion 1d abuts against the upright bent portion 6b of the set plate 6, and continues to rotate clockwise following the running of the set plate 6. However, rotor 1
The opening of the shutter blades 4 and 5 has not yet started at the time when the shutter blades 4 and 5 come into contact with each other. Thereafter, the set plate 6 further travels, and the shutter blades 4 are driven by the blade drive pins 3 of the rotor 1.
5 and 5 are opened, and after the proper exposure amount to the film is detected by the known photometric means by the light receiving element 26, the power supply to the rotor 1 is cut off, and the rotor 1 is rotated counterclockwise by the force of the spring 2. To close the shutter blades 4 and 5. Then, the set plate 6 further continues to run, and switches a winding motor energizing switch (not shown) to the motor energizing side to stop. As a result, the camera winds up the film one frame by the built-in hoisting motor through the well-known hoisting mechanism, and at the same time, charges the set plate 6 and the distance ring 9 to return to the state shown in FIGS. .

Next, when the subject is at a middle distance, when the release button is pressed in the charged state of FIG. 4, the distance to the subject is first stored in the IC of the camera as in the case of the long distance described above. Subsequently, the locking of the set plate 6 is released and the running of the set plate 6 starts, and the start signal is input to the IC by the contact piece sliding on the circuit pattern. Then, the IC immediately outputs a rotor energizing signal according to the distance signal and the start signal, and the rotor 1 is energized by a known circuit means, and the control unit 1 of the rotor 1 is controlled.
Rotate clockwise until d comes into contact with the upright bent portion 6b of the set plate 6. At this time, the vertical bending portion 1 of the distance control lever 16
6f 'has a positional relationship shown in FIG. 7 slightly above the claw 1e of the rotor 1.

In this state, as the set plate 6 travels, the distance control lever 16 slides obliquely upward to the right in the figure, and when its upright bent portion 16f 'exceeds the claw 1e of the rotor 1,
IC from the circuit pattern in which the contact piece of the set plate 6 is sliding
Input an intermediate signal. Then, the IC outputs a rotor energization off signal based on the distance signal and the intermediate signal,
The power supply to the rotor 1 is cut off by known circuit means, and the rotor 1 returns to its original position by the force of the spring 2. Thereafter, the upright bent portion 16f 'of the distance control lever 16, which is further slid obliquely upward to the right, comes into contact with the pawl 1f of the rotor 1 to obtain a state shown in FIG.

The set plate 6 continues to travel, and the stop claw 12 is rotated clockwise in the same manner as in the case of the long distance described above to release the engagement with the distance ring 9 and stop by the rotation of the distance ring 9. The wheel 14 is turned in the counterclockwise direction, and the middle distance pawl 14d of the stop wheel 14 hooks the upright bent portion 16g of the distance control lever 16 to turn the lever 16 counterclockwise about the shaft 50a. Then, it stops in the state of FIG. At this time, the taking lens barrel 11 is set at a middle distance position by the distance ring 9. Thereafter, the exposure operation is performed in the same manner as in the case of the long distance described above, and the state returns to the charged state in FIG. 3 again.

When the subject is at a short distance, the distance control lever 16 has its upright bent portion 16f 'abutting on the claw 1g of the rotor 1 and the upright bent portion 16g is in contact with the stop wheel 14g during release operation. Is in contact with the short distance claw 14e, and the other operations are the same as those in the case of the long distance or the medium distance described above. Accordingly, the rotor energization timing chart for each of these distances has a waveform shown in FIG.

Next, the switching operation to the flash photography mode and the photography operation will be described. When the user places his / her finger on the upper part of the flash device frame 41 in the normal photographing mode shown in FIG. 1 and FIG. And the guide groove 41a slides along the shaft 36e of the flash device holding plate 36, and the click spring 40 moves the click groove 41c at a position where the left end of the guide groove 41a abuts on the left shaft 36e. And stop. At this time, the projection 41b of the flash device frame 41, which has been in contact with the high cam edge 31d of the flash device detection lever 31, also moves rightward on the side of the low cam edge 31e. 32 in the counterclockwise direction by the force of
The FA lever 21 which was in contact with 1c is also a distance signal lever 2
The lever 23 is rotated clockwise by the force of the spring 23 urged through the lever 2 and stopped by the contact between the upright bend 22d of the distance signal lever 22 and the upright bend 16f of the distance control lever 16. On the other hand, the charging contact piece (not shown) is closed by the movement of the flash device frame 41, and the electric charge is supplied from the power supply to the main capacitor for light emission. .

In this state, when the camera is pointed at the object and the release button is pressed, a distance measuring operation to the object is performed by a distance measuring device (not shown) as in the above-described normal photographing mode, and a distance signal is stored in the IC. After that, the set plate 6 is unlocked and starts running to the left, and the start signal is input by the contact piece provided on the set plate 6 sliding on the circuit pattern, and The distance control lever 16 also travels obliquely upward to the right in conjunction with the travel of the set plate 6. Then, based on the distance signal from the distance measuring device and the position signal of the distance control lever 16 output from the set plate 6, the IC performs energization and de-energization of the rotor 1 as shown in the timing chart of FIG. The photographing lens barrel 11 is set at the extension position corresponding to each subject distance.
Is set, but the vertical bending portion 16f of the distance control lever 16 is set.
Has the distance signal lever 2 as described above in the flash photography mode.
2, the distance signal lever 22 rotates counterclockwise about the shaft 22a in conjunction with the travel of the distance control lever 16 obliquely to the upper right direction, At the same time, the FA lever 21 rotates clockwise,
The cam portion 21d enters the movement locus of the blade drive pin 3 of the rotor 1.

Incidentally, the distance control lever 16 is used for normal shooting.
As described in the operation in the shadow mode,
The FA lever 21
The cam surface of the flash unit 21d is aligned with the flash device guide
Number (GN o) to set an appropriate aperture value according to
It is formed so that the opening degree of the tta blade changes. did
Therefore, the image of the stop car 14 and the distance control lever 16
The FA lever 21 is also moved by the stop setting operation according to the body distance.
The set plate 6 is moved to the position corresponding to
The rotor 1 rotates clockwise by the energization,
Root drive pin 3 abuts cam portion 21d of FA lever 21
The shutter blades 4 and 5 are opened until the
In this state, the shutter blades 4 and 5 are held. Next, light reception
The amount of light measured by the element 26 is the proper exposure of the film.
When the amount is reached, or if it has not yet been
After the preset maximum opening time has elapsed,
Mera's IC outputs a shutter closing signal and uses well-known circuit means.
When the power to the rotor 1 is cut off by the
The arc tube of the frame 41 emits light. Normal shooting in this way
As with the flash mode, the flash shooting is performed according to the subject distance.
The flash device emits light by changing the aperture diameter of the shutter blade
In this way, an appropriate exposure can be obtained.

Next, the switching operation to the close-up photographing mode and the photographing operation thereof will be described. To switch the camera from the normal shooting mode shown in FIGS. 1 and 3 to the close-up shooting mode shown in FIGS. 2 and 12, the flash device frame 41 is pressed to the left. As a result, the flash device holding plate 36 is pushed by the flash device frame 41 at the projection 36f and rotates clockwise around the hole 36a, and stops at the position where the projection 36c contacts the stopper 39. At this time, the reset lever 33 is moved upward in the drawing by the force of the spring 19 of the proximity reset lever 18 when its tip 33d is disengaged from contact with the projection 36c, and the spring 37 of the flash device holding plate 36 The counterclockwise return rotation by the force is locked. At this time, the flash device frame 41 is integrally formed with the holding plate 36 with the hole 36.
It rotates clockwise around a, and makes its illumination direction a direction suitable for close-up photography.

When the flash device frame 41 is rotated clockwise, the flash device detection lever 31 is moved to the flash device frame 4.
As the contact surface with the first protrusion 41b moves from the high cam edge 31d to the low cam edge 31f, the FA lever 21 rotates counterclockwise similarly to the flash photography mode described above.
And the restriction on the distance signal lever 22 is released. On the other hand, when the flash device holding plate 36 is rotated clockwise, the protrusion 36
f moves from the cam portion 44e of the finder block 44 to the lower cam portion 44f, so that the finder block 44 is moved counterclockwise by the force of the spring 45 around the shaft 44a, that is, toward the optical axis side of the taking lens. Rotate.

Here, the distance measuring system used in this embodiment is
Then, as shown in FIG.
An image is formed on the subject by the projection lens B, and
These reflected lights are imaged on the light receiving element 47 by the light receiving lens C.
This is a triangulation method in which distance measurement is performed, as shown in FIG.
In normal shooting mode, the distance measurement zone₁, L_Two, L_Three
Distance zone Z with reference to₁, Medium distance zone
Z_Two, Short distance zone Z_Three, But as mentioned above,
The rotation of the viewfinder block 44, that is, the light receiving element 47
When switching to the close-up shooting mode by turning the
Is the distance l₁, L_Two, L_ThreeDistant distance
Z ′₁, Medium distance zone Z ′_Two, Short distance zone Z ′_ThreeTo
Distant zone Z ′₁About the normal shooting mode
Short range zone Z ′_ThreeSet to overlap with each other
I have. Also, the finder field of view rotates by the same amount as the distance measurement system.
Short distance correction.

The flash device frame 41 itself also rotates clockwise in the figure around the hole 36a of the flash device holding plate 36 as described above, and the amount of the rotation is also a short distance correction amount in the light emitting direction of the flash device. Is to be matched.

Further, the upward movement of the reset lever 33, that is, the counterclockwise rotation of the proximity reset lever 18 releases the restraint on the movable lever 20 as shown in FIG. Since the position of the pin 20c of the movable lever 20 is displaced upward from the position in the normal photographing mode, the distance control lever 16
Can be displaced upward accordingly, and the amount of rotation of the distance ring 9, that is, the amount of extension of the photographing lens is largely shifted to the near distance side as compared with the normal photographing mode. The upward movement of the reset lever 33 causes the display section 33e to protrude outward from the camera as shown in FIG. 2 to inform the photographer that the camera is in the close-up shooting mode, and at the same time, to display the display section 33e. Is pressed against the force of the spring 19, the tip 33 d of the reset lever 33 and the projection 36 c of the flash device holding plate 36 are disengaged, and the flash device holding plate 36 is deflected by the force of the spring 37. It also rotates clockwise to return to the position of the normal shooting mode shown in FIG.

When the flash device frame 41 is slid to the close-up photographing mode, the contact piece 42b of the contact portion 42 slides on the patterns 43a and 43b of the circuit board 43, and
At the same time that C is informed of the flash photography mode, the main capacitor for light emission is charged, and its vertical bent portion 36d abuts against the step 28c of the close-up lever 28 to resist the force of the spring 30. And slide it to the left,
The ISO switching lever 24 is rotated clockwise about the end of the arm 24c thereof by the shaft 28b of the close-up lever 28 to displace the position of the hole 24b, which is the ISO signal output part, to the left in FIG. , To this one end shaft 22
The distance signal lever 22 fitted with a also rotates counterclockwise in the figure about the vertical bent portion 22d abutting on the vertical bent portion 16f of the distance control lever 16. as a result,
The pin 22c of the distance signal lever 22 moves rightward in the figure, and the fitted FA lever 21 is rotated clockwise to further rotate the shutter blade 4 than in the flash photography mode.
The cam portion 21d abutting on the blade drive pin 3 of the rotor 1 moves so that the apertures 5 and 5 are controlled to a small aperture.

In the state set as described above, when the camera is pointed at an object at a short distance at the charge position of the camera shown in FIG. 13 and the release button is pressed, the distance measuring device measures the distance in the same manner as in the normal photographing described above. When the distance operation is performed and then the set plate 6 is unlocked and the set plate 6 starts running, the vertical bending portion 22d of the distance signal lever 22 is also moved to the distance control lever 1.
6 and moves rightward following the traveling of the vertical bending portion 16f.

The subject is shown in FIG.
Z ′₁In the zone of
If you are in a relatively distant zone in the shooting zone
Means that the subject is very far away
A ranging signal is input as it is. Therefore, the focus of the camera
The adjustment operation section allows the subject to be far away in normal shooting mode.
Perform the same operation as in That is, the set plate 6
Rotor 1 is energized even if the start signal of
Therefore, the bent portion 16 of the distance control lever 16
f 'and the long-distance claw 1e of the rotor 1 are brought into contact with each other, as shown in FIG.
In the state shown, the travel of the distance control lever 16 stops. That
Thereafter, the set plate 6 further travels, and the distance ring 9 and the storage
The engagement with the hook 12 is released. As a result, the distance ring 9
It rotates counterclockwise by the force of the spring 10, and it
The stop wheel 14 is rotated counterclockwise, and
The long distance claw 14c of the top car 14 is moved to the distance control lever 16
The distance control lever 16 is pivoted
Rotated counterclockwise about 50a, shown in FIG.
Between the vertical bent portion 16f 'and the claw 1e of the rotor 1 as described above.
Release, and rotate further to move the movable lever as shown in FIG.
-20 stops when it comes into contact with the pin 20c.
The operation stops.

Thereafter, the set plate 6 further travels, and the IC
And the rotor 1 rotates clockwise to open the shutter blades 4 and 5, the blade drive pin 3 and the cam portion 21d of the FA lever 21 abut, and the opening of the shutter blade is positioned at that position. And the film is exposed, but the contact position is the amount by which the close-up lever 28 has moved to the left as described above in the flash photography mode, that is, the FA lever 21 rotates clockwise. As a result, the aperture becomes smaller and the proper exposure can be obtained when flash photography is performed on a subject at a close distance. Then, the camera turns off the power to the rotor 1 in response to a stop signal after a preset opening time, and at the same time, the flash device emits light, the shutter blades 4 and 5 are closed, and the film exposure operation ends.

Thereafter, the set plate 6 further travels, and the motor energizing switch is switched to the motor energizing side by a known means, and at the same time, the film winding is removed. As a result, the camera winds up the film, charges the shutter and the photographic lens barrel operating system, and moves the end 6f of the set plate 6 to the arm 18c of the proximity reset lever 18 at the overcharge position, which is the final stage of the charging operation. The proximity reset lever 18 pivots largely in the clockwise direction against the force of the spring 19 so that the reset lever 33
The flash device holding plate 36 is rotated counterclockwise by the force of the spring 37 in order to disengage the tip 33d of the flash device holding plate 36 from the projection 36c of the flash device holding plate 36 by the force of the spring 37. Then, it returns to the position of the normal shooting mode shown in FIGS. At this time, it goes without saying that the finder block 44, the flash device frame 41, and the FA (flash auto) mechanism component also return to the position in the normal shooting mode.
Then, when the overcharging is completed, the set plate 6 returns to the charge locking position, and enters the state of the normal photographing mode shown in FIG.

[0043]

As described above, according to the present invention,
In a shutter device that controls the focus adjustment operation and the exposure operation by using the same operation member, when the operation member controls the exposure operation, no biasing force related to the focus adjustment operation acts on the shutter device. It is possible to perform appropriate exposure control, guarantee stable opening and closing of the shutter blades, and improve mass productivity without increasing the size.

[Brief description of the drawings]

FIG. 1 is a perspective view of a camera having a shutter device according to an embodiment of the present invention in a normal shooting mode.

FIG. 2 is a perspective view in the close-up shooting mode.

FIG. 3 is an exploded perspective view of a main part of the internal mechanism in a normal photographing mode.

FIG. 4 is an operation explanatory diagram of the focus adjustment operation unit in a charge position state.

FIG. 5 is an operation explanatory view of a state in which a long distance adjustment is being performed.

FIG. 6 is an operation explanatory view of a state in which a long distance adjustment is completed.

FIG. 7 is a diagram illustrating a first operation in a state in which the middle distance adjustment is being performed.

FIG. 8 is a diagram illustrating a second operation in a state in which the middle distance adjustment is being performed.

FIG. 9 is an explanatory view of the operation in a state in which the middle distance adjustment is completed.

FIG. 10 is an exploded perspective view of a main part of an internal mechanism in a flash photography state in a normal photography mode.

FIGS. 11A and 11B are explanatory diagrams of a distance measuring zone by switching of a distance measuring device in conjunction with switching of a photographing mode. FIG. 11A shows a normal photographing mode, and FIG. 11B shows a close-up photographing mode.

FIG. 12 is an exploded perspective view of a main part of an internal mechanism in a close-up shooting mode.

FIG. 13 is an explanatory diagram of the operation of the focus adjustment operation unit in the charged position state at that time.

FIG. 14 is a diagram illustrating a first operation in a state in which a long distance adjustment is being performed.

FIG. 15 is a diagram illustrating a second operation in a state in which a long distance adjustment is being performed.

FIG. 16 is an operation explanatory view of a state in which the distance adjustment is completed.

17A and 17B are operation waveform diagrams showing energization timing to a rotor for controlling a focus adjusting device of a camera, wherein FIG. 17A is a normal photographing mode, FIG. 17B is a flash photographing thereof, and FIG. Time and are shown respectively.

[Explanation of symbols]

1 · · · rotor (operating member), 4, 5 · · · shutter blades,
6 set plate, 9 distance ring, 11 photographing lens barrel, 12 stop claw, 14 stop car (focus adjustment position determining member), 15 barrel connection lever, 16
..Distance control lever (moving member), 18. Proximity reset lever, 20..Movable lever, 21..FA lever,
22 ·· Distance signal lever, 24 ·· ISO switching lever, 25 ·· ISO switching knob, 26 ·· Light receiving element,
28 ··· Close-up lever, 31 ·· Flash device detection lever, 3
3 ··· Reset lever, 36 ··· Flash device holding plate, 3
8, 39 · · · stopper, 41 · · · flash device frame, 44
・ ・ Finder block.

Claims (1)

(57) [Claims] A moving member for performing a focus adjusting operation;
An operating member that engages with the moving member and controls the movement of the moving member; and a focus adjustment position that disengages the moving member from engagement with the operating member and determines a focus adjusting position according to the released position. A determining member, and a shutter blade that opens and closes in conjunction with the movement of the operating member after the moving member is disengaged from the operating member by the focus adjustment position determining member. Shutter device.