JPH0610697B2 - Close-up camera - Google Patents

Description

The present invention relates to a camera having a distance adjusting device that enables close-up photography.

In a camera in which a normal distance range and a short distance range closer than the normal distance range are focused as a photographing range, the configuration thereof is generally complicated.

That is, in the case of adjusting the movement amount of the photographing lens in response to the distance measurement signal and moving the position lens according to the distance measurement result,
If it is desired to control both the normal range and the close range as described above, the lens stop position control mechanism must be provided for both the normal range and the close range.

For example, in the configuration for controlling the displacement amount of the photographing lens from the initial position according to the distance as the stop position control mechanism, a plurality of locking surfaces for locking the movement of the lens from the initial position are provided for each distance. If the locking surface is selected according to the distance-measuring distance, the movement of the lens is stopped at this selected locking surface, and the lens is stopped at a position according to the distance-measuring distance, As a surface, in addition to the normal range, a locking surface for the near range is required.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a close-up photography switching camera that performs position control of a lens in close-up photography using a locking surface used in a normal photography range.

In order to achieve the above-mentioned object, as a configuration of the present invention, a normal photographing for performing focusing based on a distance measurement value by a distance measuring device for an object within a first distance plate,
In a camera capable of switching between close-up photography in which focusing is performed based on a distance measurement value of a distance measurement device for a subject in a second distance range including a closer distance side than the distance range, the same locking surface is usually used. A plurality of locking surfaces (14c, 14d, 14c, 14d, 14c, 14d, 14c, 14d, 14d, 14c, 14d, 14d, 14c, 14d, 14c, 14d, 14d, 14c, 14d, 14c, 14d, 14c, 14d, 14c, 14d, 14d, 14c, 14d, 14d, 14c, 14d, 14d, 14c, 14d, 14d, 14c, 14d, 14c, 14d, 14d, 14c, 14d, 14d, 14d, 14d, 14d, 14d, 14d, 14d, 14d, 14c, 14d, 14d, 14c, 14d, 14d, 14d, 14d, 14d, 14d, 14d, 14d, 14d, 14d, 14d, 14d, 14d, 14d, 14d, 14d, 14c, 14d of the distance measuring device obtained at the time of photographing and a predetermined distance measuring value obtained by the distance measuring device at the time of close-up photographing are respectively taken. A moving member (14) having 14e) which moves in conjunction with the extension movement of the taking lens, and a locking surface corresponding to the distance measurement value obtained by the distance measuring device among the plurality of locking surfaces are selected. Then, the locking member (16, 16g) that engages with the selected locking surface is started to be displaced from the initial position, and the engaging operation of the locking member is performed during a predetermined amount of displacement, and the subsequent displacement The displacement member (6) that starts the shutter operation at A fixed amount feeding mechanism (20, 20c) that shifts the taking lens to a position where the taking lens is extended by a certain amount with respect to the amount of the taking lens that is adjusted according to the engagement position of the stop surface and the locking member, Amount of extension determined by the engagement position of the locking member and the locking member selected based on the distance measurement value during normal shooting.The shooting lens is moved to the position where the shooting lens is extended, and based on the distance measurement value during close-up photography. By moving the photographing lens to a position where the fixed amount is extended by the fixed amount extension mechanism with respect to the extension amount determined by the engagement position of the selected engagement surface and the engagement member, the engagement surface in the normal photographing even in close-up photography Is used to control the position of the lens.

An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 are perspective views showing an appearance of an embodiment of a camera according to the present invention. FIG.
The drawing shows the close-up shooting mode, and FIG. 3 is an exploded perspective view showing the arrangement of the internal mechanism thereof, showing the state of the normal shooting mode.

In FIG. 3, reference numeral 1 denotes a rotor, which is rotatably supported by a pin provided on a shutter base plate (not shown) so as to be rotatable in a central hole 1a.
In addition, the spring 2 hung in the hole 1b is urged to rotate in the counterclockwise direction and abuts against a stopper (not shown) so that the third
It has stopped in the state shown in the figure. The rotor 1 further has a spiral conduction pattern 1c formed on one surface thereof, and a braking portion 1d and a braking portion 1d which come into contact with a vertical bending portion 6b of a set plate 6 which will be described later, which is a displacement member, on the periphery of the other side. AF (autofocus) for abutting the vertical bending portion 16f 'of the distance control lever 16 to stop the operation of the distance control lever 16
Blades 1e, 1f, 1g for use are formed, and a blade drive pin 3 is integrally crimped on the front surface thereof.

Then, in the state of FIG. 3, the conduction pattern 1c of the rotor 1
When electricity is supplied by an electric circuit (not shown), the rotor 1 rotates clockwise against the urging force of the spring 2 in accordance with Fleming's left-hand rule. The yoke is arranged.
The blade drive pin 3 is fitted in the cam grooves 4b and 5b of the shutter blades 4 and 5 and collides with the cam surface 21d of the FA lever 21 which will be described later during flash photography.

The shutter blades 4 and 5 are rotatably supported by pins provided on the shutter base plate in holes 4a and 5a, respectively, and when the rotor 1 rotates, the blade drive pin 3 thereof is rotated.
Thus, the opening and closing operation of the blade is performed.

The set plate 6 is held by the pair of long grooves 6a, 6a and the pins 7, 7 projecting from the shutter base plate so as to be slidable in the left-right direction in the figure, and the spring 8 hung on the projecting part 6c. Although it is urged to the left by the lever, it is slid to the right against the force of the spring 8 by a winding-up charge mechanism (not shown), and is locked at the illustrated charge position by a locking member (not shown). It has become. The set plate 6 plays a role of restricting the movement of the rotor 1 when the upright bent portion 6b is in contact with the braking portion 1d of the rotor 1 as described above and the rotor is in the energized state. It engages with a governor mechanism (not shown) to guarantee a uniform speed control of the movement, and its upright bent portion 6e comes into contact with an arm portion 15c of a lens barrel connecting lever 15, which will be described later. Is integrally held, and the traveling position of the set plate 6 is input to the IC that controls the sequence of the camera by a circuit pattern (not shown).

Reference numeral 9 denotes a distance ring, which is rotatably fitted to a lens barrel base plate (not shown) by its inner diameter portion 9a, and has a charge projection 9b, a claw 9c, a hook 9d and a gear 9 on its outer peripheral surface.
Although it has an e and is urged to rotate in the clockwise direction in the figure by a spring 10 hung on the hook portion 9d, the force of the spring 10 is resisted by the charge mechanism (not shown) via the charge protrusion 9b. Then, when it is rotated counterclockwise, the claw portion 9c
The claw portion 12b of the stop claw 12 described later is engaged and locked at the charge position. The gear portion 9e meshes with the gear portion 14b of the stop wheel 14 which is a moving member described later, Further, on the rear surface portion thereof, there are provided three feeding cam portions 9f at equal intervals on the circumference, and three protrusions 11a provided on a part of the photographing lens barrel 11 are provided on the cam portion 9f by springs not shown respectively. The photographic lens is pushed out, and the photographing lens is extended in accordance with the amount of rotation of the distance ring 9.

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. It comes into contact with each other and stops at the position shown in FIG. 3, and as described above, the claw portion 12 for locking the distance ring 9 is provided.
A drive pin 12c is provided outside b, and the drive pin 12c comes into contact with the left end portion of the set plate 6 when the set plate 6 moves to a position to the left of the charge position in FIG. Is rotated clockwise to release the engagement between the claw portion 12b and the claw portion 9c of the distance ring 9.

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. A sector for transmitting to the stop wheel 14 and having a long-distance claw 14c, a middle-distance claw 14d, and a short-distance claw 14e is integrally provided, and a distance control lever 16 which will be described later is a locking member for these claws. The vertical bending portion 16g is configured to abut by the rotation of the stop wheel 14.

The lens barrel connecting lever 15 is rotatably supported by the structural member through a hole 15a, and a vertical bending portion 15b at one end of the lens barrel connecting lever 15 contacts a cutout portion 16d of a distance control lever 16 described later, and an arm portion 15c at the other end. As described above, it comes into contact with the vertical bending portion 6e of the set plate 6.

In the distance control lever 16, a shaft 50a protruding from the structural member is fitted in the long groove 16a, and a shaft 50b also protruding from the structural member and a pin 20c of a movable lever 20 which will be described later, which is a fixed amount feeding mechanism. It is slidably and oscillatably supported between the two parts, and is urged rightward in the figure by a spring 17 hung on the hook part 16e. In the state shown in FIG. 3, the lower side part 16b and the shaft 50b contact each other. Then, the distance control lever 16 is positioned, and the upper side portion 16c and the pin 20c are separated from each other. The distance control lever 16 is provided with the cutout portion 16d and the vertical bending portions 16f, 16f 'and 16g as described above.

Reference numeral 18 denotes a proximity reset lever, which is rotatably supported by the structural member by a hole 18a, and is rotated counterclockwise in the figure by a strong spring 19 hooked in a hole 18e provided in one arm 18b of the structural member. When biased, the arm portion 18b abuts against the upright bent portion 33c of the lower end of the reset lever 33 described later, and in the state of FIG. 3, the tip portion 33d of the reset lever 33 projects the projection portion of the flash device holding plate 36 described later. It stops at 36c. Further, the proximity reset lever 18 has an arm portion 18c apart from the end portion 6f of the set plate 6 with a slight gap in the state of the charge of the set plate 6 shown in FIG. 3 and an arm portion 20b of a movable lever 20 described later. It has a vertical bending portion 18d that abuts against.

The movable lever 20 is rotatably supported by the structural member by a hole 20a, the arm portion 20b at one end of the movable lever 20 is in contact with the proximity reset lever 18 as described above, and the pin 20c is provided at the other end.
The pin 20c stops the rotation of the distance ring 9 by hitting the upper side 16c of the distance control lever 16 in the middle of the distance adjusting operation, and controls the amount of extension of the photographing lens.

Reference numeral 21 denotes an FA (autofocus) lever, which is rotatably supported by the structural member by a hole 21a, and has an arm portion 21b which comes into contact with a vertically bent portion 31c of a flash device detection lever 31 which will be described later.
It has a cam groove 21c into which a pin 22c of a distance signal lever 22, which will be described later, fits, and a cam portion 21d that regulates the position of the drive pin 3 of the rotor 1 that drives the shutter blades 4 and 5. However, in the state of FIG. 3, the flash device detection lever 31
The cam portion 21d and the drive pin 3 are not in contact with each other due to the contact between the upright bent portion 31c and the arm portion 21b.

The distance signal lever 22 is a hole 24b of the ISO switching lever 24.
The shaft 22a at one end is fitted to the pin 22 and is urged by the spring 23 hooked in the hole 22b to rotate counterclockwise in the drawing, and the pin 22 at the other end is rotated.
c is fitted in the cam groove 21c of the FA lever 21 as described above, and the vertical bending portion 22d abuts the vertical bending portion 16f of the distance control lever 16 to adjust the displacement amount of the distance control lever 16. Although it is transmitted to the distance signal lever 22, it retreats to a position where it does not contact the distance control lever 16 when the camera is not in the flash photography mode.

The ISO switch lever 24 is a close-up lever 28 which will be described later.
Is supported rotatably around a hole 24a fitted with the shaft 28b of the distance signal lever 22 as described above.
Has a hole 24b into which the shaft 22a is fitted, and an arm portion 24c fitted into the recess 25d of the ISO switching knob 25 at the other end.

The ISO switching knob 25 is positioned by an operation knob portion 25a protruding from the upper surface of the camera body, an ND filter portion 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. It has a plurality of click grooves 25c and a concave portion 25d integrally formed on the lower surface thereof, and is supported by a known means so as to be slidable in the left-right direction in the drawing, and in front of the light receiving element 26 in the ISO400 state. The ND filter part 25b is positioned.

The close-up lever 28 is supported by a pair of long groove portions 28a fitted with a shaft 29 provided in a part of the structural member so as to be slidable in the left-right direction in the figure, and one end thereof is provided with the ISO switching lever 24 as described above. The shaft 28b fitted into the hole 24a of the step 28c and the step 28c in contact with the upright bent portion 36d of the flash device holding plate 36 described later.
And has a spring 30 hung on the protruding portion 28d at the other end, and is biased to slide rightward in the drawing.

The flash device detecting lever 31 is L-shaped and has a hole 31a.
Is rotatably supported by the structural member by a spring hooking hole.
Although it is urged to rotate counterclockwise in the figure by a spring 32 hung on 31b, the high cam edge 31 of one arm
The cam edges 31e and 31f, which are low in d, are formed so as to come into contact with the projection 41b on the lower surface of the flash device frame 41, which will be described later. FA
The arm 21b of the lever 21 is in contact.

The reset lever 33 is supported by a pair of long groove portions 33a fitted with a shaft 34 provided in a part of the structural member so as to be slidable in the vertical direction in the figure, and a weak spring 35 hooked on a spring hook portion 33b. The arm portion 18b of the proximity reset lever 18 comes into contact with the vertical bending portion 33c provided at the lower end thereof by the spring 19 of the proximity reset lever 18 as described above. It is pushed up by the counterclockwise turning force. Further, a projection portion of the flash device holding plate 36 is provided above the reset lever 33.
Tip portion 33d pressed by 36c in the state shown in FIG.
Also, in the close-up shooting mode, the display protrudes outward from the through hole of the camera body A to notify the photographer of the close-up shooting mode, and at the same time, the projection can be pushed to cancel the close-up shooting mode. It has a portion 33e.

The flash device holding plate 36 is pivotally supported by the structural member by a hole 36a, is rotatable between the stoppers 38, 39, and is rotated counterclockwise in the figure by a strong spring 37 hooked on a spring hook 36b. Are urged to do so. Further, the projection 36c of the flash device holding plate 36 is in contact with the stoppers 38, 39 to restrict the rotation thereof, and the vertical bending portion 36d provided on the projection 36c is used for the close-up lever 28. The stepping lever 28 is brought into contact with the stepped portion 28c, and the close-up lever 28 is moved 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 is held there. A pair of shafts 36e projecting from the above are fitted into the guide grooves 41a of the flash device frame 41, and further contacted with cam portions 44e and 44f on the lower surface of a finder block 44, which will be described later, and movement of the flash device holding plate 36. Further, it has a protrusion 36f for interlocking the finder block 44 and a click spring 40.

The flash device frame 41 has a light emitting tube, a reflector, etc., which are not shown, built therein. As described above, the pair of shafts 36e of the flash device holding plate 36 are fitted in the guide grooves 41a to move in the left-right direction in the drawing. The projection 41b, which is slidably held and is provided on the lower surface thereof, has the projection device detecting lever 3 as described above.
1 to contact the cam edge portions 31d, 31e, 31f, to displace the flash device detection lever 31 in accordance with the position of the flash device frame 41, and to engage with the click spring 40 of the flash device holding plate 36. It has the click grooves 41c and 41d to be mated with each other, and the step portion 41e at one side edge can abut against the protrusion 36f.

Reference numeral 42 denotes a contact piece portion in which a hole 42a is fixed to the lower surface of the flash device frame 41 with screws or the like, and 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. , The IC (not shown) of the camera is informed of the shooting mode of the camera. Further, the flash device frame 41 has a charging contact (not shown) so that the light emitting capacitor of the flash device is charged in synchronization with the on / off timing of the patterns 43a and 43b by the contact part 42. Has been done.

The finder block 44 is rotatably held by the structural member by a pair of shafts 44a, and is biased by a spring 45 hooked on a spring hook 44b so as to rotate counterclockwise in the figure. Light receiving window for autofocus 44
c and the finder window 44d are arranged side by side, and the cam portions 44e and 44f provided on the lower surface thereof are the flash device holding plate 3 as described above.
The protrusion 36f is in contact with the projection 36f, and is in contact with the cam portion 44e in the normal photographing mode shown in FIG.

Next, the operation of this embodiment having the above configuration will be described.

First, in the normal photographing mode, the winding plate charging mechanism (not shown) causes the setting plate 6 to slide to the right against the force of the spring 8 and the locking member (not shown) to move it to the charging position shown in FIG. At the same time, the distance ring 9 is rotated counterclockwise against the force of the spring 10, and the claw portion 9c of the distance ring 9 is engaged with the claw portion 12b of the stop claw 12 to be locked at the charge position. It FIG. 4 is a front view showing the state of the charge of the main part of the focus adjustment unit including the distance ring 9.

Therefore, when the camera is held toward the subject and the release button (not shown) is pushed to the first stroke, the distance to the subject is stored in the IC of the camera by a known distance measuring device, and then the release button is pushed to the second position. When the set plate 6 is pushed to the stroke, the set plate 6 is disengaged, and the set plate 6 starts running at a constant speed to the left by the action of a governor mechanism (not shown) by the force of the spring 8.

The start signal of the set plate 6 is input to the IC by sliding on the circuit pattern of a contact piece (not shown), and the distance adjusting operation is started.

Here, when the subject is at a long distance, the conduction signal 1c of the rotor 1 is not energized by the start signal of the set plate 6, so the rotor 1 remains at the positions shown in FIGS. 3 and 4. On the other hand, the distance control lever 16
As the set plate 6 travels, the lens barrel connecting lever 15 rotates and the force of the spring 17 causes it to start moving at a constant speed diagonally upward to the right from the state shown in FIG.
The claw 1e comes into contact with the claw 1e and stops in the state shown in FIG. At this time, the abutting direction of the vertical bending portion 16f 'of the distance control lever 16 with respect to the abutting surface of the claw 1e of the rotor 1 is oriented in the rotational axis direction of the rotor, so that the rotor 1 is not contacted. It does not rotate.

The set plate 6 further travels from the state shown in FIG. 5, and the left end of the set plate 6 contacts the drive pin 12c of the stop claw 12 to rotate the stop claw 12 in the clockwise direction and the claw 12b of the stop claw 12.
And the claw portion 9c of the distance ring 9 are disengaged, the distance ring 9 is rotated clockwise by the force of the spring 10, and the stop wheel 14 gear-coupled with this is rotated counterclockwise. The long distance claw 14c of the stop vehicle 14 is a distance control lever 16
16g of the vertical bending portion of the distance control lever 16g
The upper side portion 16c of the movable lever 20 is rotated counterclockwise until it contacts the pin 20c of the movable lever 20, and is 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 set at a long distance position. Further, in the state of FIG. 6, the contact between the vertical bending portion 16f 'of the distance control lever 16 and the claw 1e of the rotor 1 is released by the counterclockwise rotation of the distance control lever 16.

Then, when the set plate 6 further travels to the left from the state shown in FIG. 6, a rotor energization signal is output to the IC by the contact piece (not shown), and the rotor 1 resists the force of the spring 2 in FIG. It rotates clockwise, and its braking portion 1d comes into contact with the upright bent portion 6b of the set plate 6, and follows the running of the set plate 6 and continues to rotate clockwise. However, at the time of contact between the rotor 1 and the set plate 6, the openings of the shutter blades 4 and 5 have not started yet.

After that, the set plate 6 further travels to open the shutter blades 4 and 5 by the blade driving pin 3 of the rotor 1, and after the proper exposure amount to the film is detected by the known photometric means by the light receiving element 26, the rotor 1 Power to the
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 continues to run, and the winding motor energizing switch (not shown) is switched to the motor energizing side to stop.

As a result, the camera winds one frame of the film by the built-in winding motor through the well-known winding mechanism, and at the same time, the set plate 6 and the distance ring 9 are charged, and the state shown in FIGS. Becomes

Next, when the subject is at a medium distance, when the release button is pressed in the state of charge shown in 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, and then, The set plate 6 is released and the set plate 6 is released.
Starts to travel, and the contact signal slides on the circuit pattern to input the start signal to the IC.
Then, the IC immediately outputs the rotor energization signal in response to the distance signal and the start signal, the rotor 1 is energized by the known circuit means, and the controller 1d of the rotor 1 sets the set plate 6 in place.
It rotates in the clockwise direction until it comes into contact with the vertical bending portion 6b. At this time, the vertical bending portion 16f 'of the distance control lever 16 is
The positional relationship shown in FIG. 7 is located slightly above the claw 1e.

In this state, the distance control lever 1 moves as the set plate 6 travels.
6 slides diagonally upward to the right in the figure, and its vertical bending portion 16
An intermediate signal is input to the IC from the circuit pattern in which the contact piece of the set plate 6 is sliding in the vicinity of f ′ beyond the claw 1e of the rotor 1. Then, the IC outputs a rotor energization OFF signal according to the distance signal and the intermediate signal, the energization of the rotor 1 is cut off by the known circuit means, and the rotor 1 is rotated by the spring 2
Return to the original position by the force of. After that, the vertical bending portion 16 of the distance control lever 16 which is further slanted rightward and upward is moved.
The f'and the claw 1f of the rotor 1 come into contact with each other to bring about the state shown in FIG.

The set plate 6 continues to run, the stop claw 12 is rotated clockwise in the same manner as in the case of the above-mentioned long distance, the engagement with the distance ring 9 is released, and the stop wheel 14 is rotated by the rotation of the distance ring 9. When the stop wheel 14 is rotated counterclockwise, the middle distance claw 14d hooks the vertical bending portion 16g of the distance control lever 16 to rotate the lever 16 counterclockwise about the shaft 50a. Stop in the state shown in Fig. 9. At this time, the taking lens barrel 11 is set to the intermediate distance position by the distance ring 9.
After this, the exposure operation is performed as in the case of the long distance described above, and the state returns to the charge state shown in FIG.

Further, when the subject is at a short distance, in the distance control lever 16 at the time of the release operation, the vertical bending portion 16f 'is in contact with the claw 1g of the rotor 1, and the vertical bending portion 16g is at a short distance of the stop wheel 14. It comes into contact with the claw 14e,
Other operations are the same as in the case of the long distance or the medium distance described above.

Therefore, the rotor energization timing chart for each of these distances has the waveform shown in FIG. 17 (a).

Next, the switching operation to the flash photography mode and the photography operation will be described.

When the finger is put on the upper portion of the flash device frame 41 and pushed rightward in the figures from the normal photographing mode shown in FIGS. 1 and 3,
As shown in FIG. 10, the flash device frame 41 has a click groove 41.
The engagement between d and the click spring 40 is released, and the guide groove 41a
Slides along the shaft 36e of the flash device holding plate 36, and the crack spring 40 engages with the click groove 41c and stops at the position where the left end of the guide groove 41a and the left shaft 36e abut. At this time, the projection 41b of the flash device frame 41, which was in contact with the high cam edge 31d of the flash device detection lever 31, also has the low cam edge 31e.
To the right of the flash device detecting lever 31
Is rotated counterclockwise by the force of the spring 32, and the FA lever 21 that is in contact with the vertical bending portion 31c is also rotated clockwise by the force of the spring 23 that is biased via the distance signal lever 22. Then, the vertical bending portion 22d of the distance signal lever 22 and the vertical bending portion 16f of the distance control lever 16 come into contact with each other to stop. 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 source to the light emitting main capacitor. At the same time, the contact piece part 42 informs the IC that the camera is in the flash photographing mode. .

In this state, when the camera is pointed at the subject and the release button is pressed, the distance measuring operation to the subject is performed by the distance measuring device (not shown) as in the normal shooting mode described above.
After the distance signal is stored in the set plate 6, the set plate 6 is disengaged to start traveling to the left, and the contact piece provided on the set plate 6 slides on the circuit pattern to generate the start signal. Is input, and the distance control lever 16 also travels diagonally upward to the right in conjunction with the travel of the set plate 6.

The distance signal from the distance measuring device and the position signal of the distance control lever 16 output from the set plate 6 are used to detect the IC.
As shown in the timing chart of FIG. 17 (b), the rotor 1 is energized and turned off, and the photographing lens barrel 11 is set at the extended position according to the subject distance. Since the vertical bending portion 16f of the distance signal lever 22 is in contact with the vertical bending portion 16d of the distance signal lever 22 in the flash photography mode as described above, the distance control lever 16 is interlocked with the diagonally upward traveling of the distance and the distance is increased. The signal lever 22 rotates counterclockwise around the shaft 22a, and at the same time, F
The A lever 21 rotates clockwise, and its cam portion 21d comes into the movement trajectory of the blade drive pin 3 of the rotor 1.

By the way, since the stop position of the distance control lever 16 is different depending on the object distance as described in the operation in the normal photographing mode, the cam surface of the cam portion 21d of the FA lever 21 is guided by the flash device accordingly. Number (G
The aperture value of the shutter blade is formed so as to be an appropriate aperture value according to N ₀ ).

Therefore, the FA lever 21 is set by the stop setting operation according to the subject distance between the stop wheel 14 and the distance control lever 16.
Is also stopped at a position corresponding thereto, the set plate 6 further runs, the rotor 1 is rotated clockwise by the energization thereof, and the shutter blade is rotated until its blade drive pin 3 comes into contact with the cam portion 21d of the FA lever 21. 4 and 5 are opened, and the shutter blades 4 and 5 are held in the state of the opening diameter. Next, when the amount of light measured by the light receiving element 26 reaches the proper exposure amount of the film, or even if the proper exposure is not reached yet, after the preset maximum opening time has elapsed, the IC of the camera Outputs a shutter close signal, and at the same time the power supply to the rotor 1 is cut off by a known circuit means, the arc tube of the flash device frame 41 emits light.

In this way, in the same manner as in the normal shooting mode, proper exposure can be obtained during flash shooting by changing the aperture diameter of the shutter blade according to the subject distance and causing the flash device to emit light.

Next, the switching operation to the close-up shooting mode and the shooting operation 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 with the projection 36f thereof and is rotated clockwise about the hole 36a,
The protrusion 36c stops at the position where it abuts against the stopper 39, and at this time, the reset lever 33 has its tip 33d removed from the abutment with the protrusion 36c, and the reset reset lever 1
8 moves upward in the figure by the force of the spring 19 and locks the return rotation of the flash device holding plate 36 in the counterclockwise direction by the force of the spring 37. Also, at this time, the holding plate 3 of the flash device frame 41 is
It rotates in a clockwise direction around the hole 36a as a unit with 6, and sets the illumination direction to a direction suitable for close-up photography.

Then, with the clockwise rotation of the flash device frame 41,
The flash device detection lever 31 is provided with a projection 41b of the flash device frame 41.
By moving the contact surface with the high cam edge portion 31d to the low cam edge portion 31f, the contact surface rotates in the counterclockwise direction as in the flash photography mode and restrains the FA lever 21 and the distance signal lever 22. Solve On the other hand, when the flash device holding plate 36 is rotated clockwise, the protrusion 36f moves from the cam portion 44e of the finder block 44 to the lower cam portion 44f, so that the finder block 44 is centered on the shaft 44a. Then, it is rotated counterclockwise by the force of the spring 45, that is, to the optical axis side of the taking lens.

Here, regarding the distance measuring system used in this embodiment,
As shown in FIG. 1, the light from the light projecting element 46 is projected by the light projecting lens B.
This is a triangulation method in which an image is formed on a subject by means of a light-receiving lens C, and reflected light from the subject is formed on the light-receiving element 47 to measure the distance. In the normal photographing mode shown in FIG. The distance zone is divided into a long distance zone Z ₁ , a medium distance zone Z ₂ and a short distance zone Z _{3 based} on the distances L ₁ , L ₂ and L ₃ , respectively. As described above, the finder block 44 rotates, that is, it switched to the close-up mode by the rotation of the light receiving element 47 side, ranging zone length l _1, l _2, respectively far zone Z _'1, the middle distance zone Z' with respect to the l _{3 2,} near 'becomes _3, far zone Z' distance zone Z is set to each other overlaps with short-range zone Z _'3 between the normal mode for _1. Further, the field of view of the finder is also rotated by the same amount as that of the distance measuring system to perform short distance correction.

Then, as described above, the flash device frame 41 itself also rotates clockwise around the hole 36a of the flash device holding plate 36 in the figure,
The amount of rotation also matches the short-distance correction amount in the light emitting direction of the flash device.

Further, the upward movement of the reset lever 33, that is, the rotation of the proximity reset lever 18 in the counterclockwise direction is released from the constraint on the movable lever 20 as shown in FIG. 12, and the movable lever 20 is 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 rotated accordingly by a certain angle in the clockwise direction from the state. Since the distance ring 9 can be displaced upward, the rotation amount of the distance ring 9, that is, the moving amount of the photographing lens is largely shifted to the short distance side as compared with the normal photographing mode.

Further, the upward movement of the reset lever 33 causes the display portion 33e thereof to project to the outside of the camera as shown in FIG. 2 to notify the photographer that the camera is in the close-up photography mode, and at the same time, the display portion 33e. By pushing 33e against the force of the spring 19, the engagement between the tip portion 33d of the reset lever 33 and the projection 36c of the flash device holding plate 36 is released, and the flash device holding plate 36 is moved by the force of the fan 37. Rotate it clockwise,
It also has a role of returning to the position of the normal photographing mode shown in FIG.

Then, when the flash device frame 41 is slid to the close-up photographing mode, the contact piece 42b of the contact piece portion 42 slides on the patterns 43a and 43b of the circuit board 43, and the IC is in the flash photographing mode. At the same time, the light emitting main capacitor is charged, and the vertical bending portion 36d makes contact with the stepped portion 28c of the close-up lever 28 and slides it to the left against the force of the spring 30. Axis 28b of lever 28
Thus, the ISO switching lever 24 is rotated clockwise about the end of its arm portion 24c, and the position of the hole 24b which is its ISO signal output portion is displaced leftward in FIG. The distance signal lever 22 to which 22a is fitted also rotates counterclockwise in the figure about the vertical bending portion 22d that is in contact with the vertical bending portion 16f of the distance control lever 16. As a result, the pin 22c of the distance signal lever 22 moves to the right in the figure, and the FA lever 21 fitted with this pin is rotated clockwise to move the shutter blades 4 and 5 further than in the flash photography mode. Rotor 1 to control to a small aperture
The cam portion 21d, which comes into contact with the blade drive pin 3 of, moves.

In the state set as described above, when the camera is pointed to the object at a close distance at the charge position of the camera shown in FIG. 13 and the release button is pressed, the distance measuring device performs the distance measuring operation as in the normal photographing described above. Then, when the set plate 6 is disengaged and the set plate 6 starts to travel, the vertical bending portion 22d of the distance signal lever 22 also follows the running of the vertical bending portion 16f of the distance control lever 16 to the right. Move in the direction.

Meanwhile, when the subject is in the first 11 Z _'1 zone shown in Figure (b), i.e. to a case which is relatively distant zones in the close-up photographing zone at a short distance side, baseline ranging system Since the angle α with respect to B and C is mechanically corrected to β in the close-up photography mode, the distance measuring device of the camera receives the distance measuring signal so that the subject is at a long distance. Therefore, the focus adjustment operation unit of the camera performs the same operation as when the subject is at a long distance in the normal shooting mode.

That is, even if the start signal of the set plate 6 is input to the IC, the rotor 1 is not energized, so that the vertical bending portion 16f 'of the distance control lever 16 and the long-distance claw 1e of the rotor 1 come into contact with each other. The travel of the distance control lever 16 stops in the state shown in FIG. After that, the setting plate 6 further travels to disengage the distance ring 9 and the stop claw 12. As a result, the distance ring 9 is rotated counterclockwise by the force of the spring 10, and the stop wheel 14 gear-coupled with the distance ring 9 is rotated counterclockwise, so that the long distance pawl 14c of the stop wheel 14 is rotated. The vertical bending 16g of the distance control lever 16 is hooked to rotate the distance control lever 16 counterclockwise about the shaft 50a, and as shown in FIG. 1e is disengaged and further rotated to abut and stop the pin 20c of the movable lever 20 as shown in FIG. 16, and the feeding of the taking lens is stopped.

At this time, the extension position of the photographing lens is set to the pin 20c so that the close-up photographing position is within the range shown in FIG. 11 (b).
The amount of movement is fixed.

After that, the set plate 6 further travels, the rotor energization signal is output to the IC, the rotor 1 rotates clockwise, the shutter blades 4 and 5 open, and the blade drive pin 3 and the cam portion 21d of the FA lever 21. And the shutter blade aperture stops at that position to expose the film, but the contact position is only the amount by which the close-up lever 28 has moved to the left as described above from that in the flash photography mode. That is, as the FA lever 21 rotates in the clockwise direction, the aperture becomes smaller, so that proper exposure can be obtained when flash photography is performed on an object at a close distance.

Then, the camera cuts off the power supply to the rotor 1 in accordance with a preset cutoff signal after the 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 is completed.

After that, the set plate 6 further runs, and the motor energizing switch is switched to the motor energizing side by a known means, and at the same time, the film winding stopper is removed. As a result, the camera rolls up the film and charges the shutter and the photographing lens barrel operating system. At the overcharge position, which is the final stage of the charging operation, the end portion 6f of the set plate 6 is the arm portion of the proximity reset lever 18. 18c, the proximity reset lever 18 is pivoted in a large clockwise direction against the force of the spring 19, and as a result, the reset lever 33 is slid downward by the force of the spring 35, and its tip 33d and flash light. In order to disengage the device holding plate 36 from the protrusion 36c, the flash device holding plate 36 is rotated counterclockwise by the force of the spring 37,
It returns to the position of the normal photographing 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 parts are also returned to the positions of the normal photographing mode.

Then, the overcharge ends, the set plate 6 returns to the charge locking position, and the normal photographing mode shown in FIG. 3 is set.

As described above, in the present invention, the locking surface for controlling the lens stop position in the normal shooting range is also used for the close-up shooting range, so that the configuration can be simplified.

[Brief description of drawings]

1 and 2 are perspective views showing the appearance of a camera according to the present invention. FIG. 1 shows a normal shooting mode, FIG. 2 shows a close-up shooting mode, and FIG. 3 shows a normal shooting mode. 4 to 9 are similarly explanatory views of the operation of the focus adjustment operation section, showing the charge position, long distance adjustment, long distance adjustment end, and middle distance adjustment in order. Similarly, FIG. 10 is an exploded perspective view of the main part of the internal mechanism in the flash shooting state in the normal shooting mode, and FIG. 11 is a switching of the shooting mode. FIGS. 12A and 12B are explanatory views of the distance measuring zone by switching the distance measuring device which is interlocked with, and FIG. 12A shows the normal photographing mode, FIG. 12B shows the close photographing mode, and FIG. 12 show the internal mechanism in the close photographing mode. FIG. 13 to FIG. 16 are exploded perspective views of essential parts, and FIG. FIG. 17 is a diagram illustrating the operation of the working unit in the order of charge position, long-distance adjustment, similarly long-distance adjustment, and long-distance adjustment end. FIG. 17 shows the energization of the rotor for controlling the focus adjustment device of the camera. In the operation waveform diagram showing the timing, (a) shows the normal shooting mode, (b) shows the same flash shooting, and (c) shows the close-up shooting mode. 1 ... Rotor, 4, 5 ... Shutter blade, 6 ... Set plate, 9 ... Distance ring, 11 ... Shooting lens barrel, 12
...... Stop claw, 14 ...... Stop wheel, 15 ...... Lens connection lever, 16 ...... Distance control lever, 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
...... Furinder block.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location 9119-2K G02B 7/11 P

Claims (1)

[Claims] 1. A normal photographing for focusing on an object within a first distance range based on a distance measurement value by a distance measuring device, and a second distance range including a short distance side from the first distance range. In a camera capable of switching between close-up photography in which focusing is performed based on the distance measurement value of a distance measurement device for a subject, the same locking surface has a predetermined distance measurement value obtained by the distance measurement device during normal shooting and A moving member having a plurality of locking surfaces provided corresponding to predetermined distance measurement values obtained by a distance measuring device at the time of close-up photography, and moving in conjunction with the moving-out operation of the photographing lens; Of the locking surfaces, a locking surface corresponding to the distance measurement value obtained by the distance measuring device is selected, a locking member that engages with the selected locking surface, and a predetermined amount that starts displacement from the initial position. During the displacement of the A displacement member that starts the shutter operation by the subsequent displacement, and a constant amount of the photographing lens that operates during close-up photography and is adjusted according to the engagement position between the locking surface and the locking member. A fixed amount extension mechanism that shifts the taking lens to the extended position is provided, and the amount of extension determined by the engaging position of the engaging surface and the engaging member selected based on the distance measurement value during normal shooting The photographic lens is moved to a position where the fixed amount is extended by the fixed amount extension mechanism with respect to the extension amount determined by the engagement position of the engagement surface and the engagement member selected based on the distance measurement value during close-up photography. A close-up photography switching camera, which is characterized by shifting.