JPH0525085B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a camera that performs distance measurement in both a normal shooting distance range area and a close distance range area.

Conventionally, in cameras that perform photographing by manually switching the distance range, this is achieved by switching the optical axis angles of the distance measuring optical system and the finder optical system.

The present invention provides a camera of this type,
The above-mentioned optical system is automatically returned to the normal shooting distance range when shooting in the close distance range is completed, and the above-mentioned optical system is also returned to the normal shooting distance range at any time by manual operation. The first objective is to provide a camera that makes it possible to

Furthermore, in the present invention, the optical axis of the flash device can also be switched from the close-up optical axis to the normal optical axis direction in conjunction with the switching (return) at the end of normal and close-up shooting and manual mode. The second purpose is to provide a camera that has the following features.

Embodiments of the present invention will be described below based on the drawings.

1 and 2 are perspective views showing the appearance of an embodiment of the camera according to the present invention, in which FIG. 1 is in normal shooting mode, FIG. 2 is in close-up shooting mode, and FIG. 3 is in perspective view. An exploded perspective view showing the arrangement of internal mechanisms.
Indicates the status of normal shooting mode.

In Fig. 3, reference numeral 1 denotes a rotor, which is rotatably supported in a central hole 1a by a pin provided on the shutter base plate (not shown), and urged to rotate counterclockwise by a spring 2 applied to a hole 1b. It comes into contact with a stopper (not shown) and is stopped in the state shown in FIG. The rotor 1 further has a spiral conductive pattern 1c formed on one side thereof, and a vertically bent portion 6b of the set plate 6, which is a release member, around the other side.
AF (autofocus) pawls 1e, 1f, and 1g are formed to come into contact with a braking part 1d that comes into contact with and a vertically bent part 16f' of a distance control lever 16 (to be described later) to stop the operation of the distance control lever 16. In addition, a blade drive pin 3 is integrally caulked to the front surface thereof.

Then, in the state shown in FIG. 3, when the conductive pattern 1c of the rotor 1 is energized by an electric circuit (not shown), the rotor 1 rotates clockwise against the biasing force of the spring 2 according to Fleming's left hand rule. Magnets and a yoke (not shown) are arranged at intervals before and after the rotor 1 so as to achieve this. The blade drive pin 3 is still fitted into cam grooves 4b and 5b of the shutter blades 4 and 5, and collides with a cam surface 21d of an FA lever 21, which will be described later, during flash photography.

The shutter blades 4 and 5 are rotatably supported by holes 4a and 5a, respectively, on pins provided on the shutter base plate, and when the rotor 1 rotates, the blade drive pin 3 opens and closes the blades. be exposed.

The set plate 6 has a pair of long grooves 6a, 6a.
and pins 7, 7 protruding from the shutter base plate are fitted and held so as to be slidable in the left and right directions in the figure,
Although it is urged leftward by a spring 8 applied to the protrusion 6c, it slides rightward against the force of the spring 8 by a winding and charging mechanism (not shown).
It is adapted to be locked in the illustrated charge position by a locking member (not shown). Further, as described above, the vertical bent portion 6b of the set plate 6 comes into contact with the braking portion 1d of the rotor 1, and serves to restrict the movement of the rotor 1 when the rotor is energized. It meshes with a governor mechanism (not shown) to ensure uniformity of movement, and its vertically bent portion 6e comes into contact with an arm portion 15c of a lens barrel connection lever 15 (described later), and also has a contact piece (not shown). A set board 6 is attached to the IC that controls the camera sequence by holding it together and controlling the camera sequence using a circuit pattern not shown.
The driving position of the vehicle is being input.

Reference numeral 9 denotes a distance ring, which is rotatably fitted to a lens barrel base plate (not shown) through its inner diameter portion 9a, and has a charging protrusion 9b, a claw portion 9c, a hook portion 9d, and a gear portion 9e on its outer peripheral surface. , the hook portion 9d
The spring 10 is biased to rotate clockwise in the figure by a spring 10 applied to it, but a charging mechanism (not shown) forces the spring 10 through the charging protrusion 9b.
When the claw portion 9 is rotated counterclockwise against the force of
The claw portion 12b of the stop claw 12, which will be described later in FIG. The surface portion has three extending cam portions 9f at equal intervals on the circumference, and three protrusions 11a provided on a part of the photographing lens barrel 11 are pressed against the cam portions 9f by respective springs (not shown). The photographic lens is extended according to the amount of rotation of the distance ring 9.

The stop pawl 12 is rotatably supported by the lens barrel base plate through a hole 12a, and is biased to rotate counterclockwise in the figure by a spring 13 applied to the hook portion 12d. The distance ring 9 is stopped at the position shown in FIG. When it moves to a position to the left from the charge position shown in FIG. It is designed to be unlocked.

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 control the rotational movement of the distance ring 9. This is transmitted to the stop car 14, and the long-distance claw 14
c. A sector having a middle-distance pawl 14d and a short-distance pawl 14e is integrally provided, and a vertically bent portion 16g of a distance control lever 16, which will be described later, comes into contact with these pawls when the stop wheel 14 rotates. has been done.

The lens barrel connecting lever 15 is rotatably supported by the structural member through a hole 15a, and an upright bent portion 15b at one end abuts a notch 16d of a distance control lever 16, which will be described later, and an arm portion 15c at the other end. is adapted to abut against the vertically bent portion 6e of the set plate 6 as described above.

The distance control lever 16 has a shaft 50a protruding from the structural member fitted into its long groove 16a, and slides and slides between a shaft 50b also protruding from the structural member and a pin 20c of a movable lever 20, which will be described later. It is swingably supported and biased rightward in the drawing by a spring 17 applied to the hook portion 16e, and in the state shown in FIG. , and the upper side 16c and the pin 20c are separated from each other. The distance control lever 1
As described above, the notch portion 16d and the vertically bent portions 16f, 16f' and 16g are formed in the portion 6, respectively.

18 is a proximity reset lever which is a second member;
It is pivotably supported by the structural member through a hole 18a, and is biased to rotate counterclockwise in the figure by a strong spring 19 applied to a hole 18e provided in one arm 18b. Vertical bent portion 3 at the lower end of the reset lever 33, which is the first member 18b will be described later.
3c, and in the state shown in FIG. 3, the tip end 33d of the reset lever 33 abuts against and stops against a protrusion 36c of a flash device holding plate 36, which is a blocking member to be described later. Furthermore, the proximity reset lever 1
8 includes an arm 18c that is separated from the end 6f of the set plate 6 by a small distance when the set plate 6 is in the charged state in FIG. It has a section 18d.

The movable lever 20 is rotatably supported by the structural member through the hole 20a, one end of the arm 20b is in contact with the proximity reset lever 18 as described above, and the other end is crimped with the pin 20c. During the distance adjustment operation, the pin 20c comes into contact with the upper side 16c of the distance control lever 16, thereby stopping the rotation of the distance ring 9 and controlling the amount of extension of the photographing lens.

21 is the FA (flash auto) lever, hole 2
rotatably supported on the structural member by 1a;
Vertical bent portion 31 of flash device detection lever 31 to be described later
The arm portion 21b that comes into contact with c and the cam groove 21c that fits into the pin 22c of the distance signal lever 22, which will be described later.
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.
have. However, in the state shown in FIG. 3, the vertically bent portion 31c and arm portion 21b of the flash device detection lever 31
Due to this contact, the cam portion 21d and the drive pin 3 are in a non-contact state.

The distance signal lever 22 is the ISO switching lever 2.
The shaft 22a at one end fits into the hole 24b of No. 4, and the hole 22
The pin 22c at the other end is fitted into the cam groove 21c of the FA lever 21 as described above, and the vertical bent portion 22d is in contact with the vertically bent portion 16f of the distance control lever 16 and transmits the amount of displacement of the distance control lever 16 to the distance signal lever 22. However, when the camera is not in flash photography mode, the distance control lever 16 is It has moved away to a position where it does not come into contact with the object.

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

The ISO switching knob 25 is positioned by an operation knob part 25a protruding from the top surface of the camera body, an ND filter part 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. Multiple click grooves 2
5c and the recessed portion 25d on its lower surface, and is supported by known means so as to be slidable in the left and right directions in the figure, and in the state of ISO 400, the ND filter portion 25b is located in front of the light receiving element 26. It's becoming like that.

The close-up lever 28 has a pair of long grooves 28
A shaft 29 provided on a part of the structural member is fitted into the shaft 29 and supported so as to be slidable in the left and right directions in the figure, and one end has the hole 24 of the ISO switching lever 24 as described above.
The shaft 28b that fits into the shaft 28a and the stepped portion 28 that is in contact with the vertically bent portion 36d of the flash device holding plate 36, which will be described later.
The spring 3 has a spring c and is hung on the protrusion 28d at the other end.
0 to slide rightward in the figure.

The flash device detection lever 31 is L-shaped, rotatably supported by the structural member through a hole 31a, and biased to rotate counterclockwise in the figure by a spring 32 hung in a spring hook hole 31b. However, the high cam edge 31d and the low cam edges 31f, 31f of one arm are formed so as to come into contact with a protrusion 41b on the lower surface of the flash device frame 41, which is a switching operation member to be described later. As mentioned above, the FA lever 2 is attached to the vertically bent portion 31c provided at the tip of the other arm.
The arm portion 21b of No. 1 is in contact with the other arm portion 21b.

The reset lever 33 is supported so as to be slidable in the vertical direction in the figure by fitting a shaft 34 provided in a part of the structural member into the pair of long grooves 33a,
It is biased to slide downward by a weak spring 35 hooked on the spring hook 33b, but the arm 18b of the proximity reset lever 18 comes into contact with the vertically bent portion 33c provided at the lower end as described above. and is pushed upward by the counterclockwise rotating force of the spring 19 of the proximity reset lever 18.
Further, on the upper part of the reset lever 33, there is a tip 33d pressed against the protruding part 36c of the flash device holding plate 36 in the state shown in FIG. It has a display section 33e that protrudes to inform the photographer that the close-up mode is in effect, and at the same time allows the user to cancel the close-up mode by pressing the protruding portion.

The flash device holding plate 36 is pivotally supported by the structural member through a hole 36a, is rotatable between stoppers 38 and 39, and is rotated counterclockwise in the figure by a strong spring 37 hung on a spring hook 36b. It is so energized. In addition, the flash device holding plate 36
The above-mentioned protrusion 36c is connected to the stopper 3.
8 and 39 to limit their rotation, and the vertically bent portion 36d provided on the protrusion 36c abuts against the stepped portion 28c of the close-up lever 28, and in the close-up photography mode, the flash device frame (described later) 41, the close-up lever 28 is moved to the left in the figure and held there, and a pair of shafts 36e protruding from the upper surface of the lever 28 are connected to guide grooves of the flash device frame 41. 41a, and also comes into contact with cam portions 44e and 44f on the lower surface of the finder block 44, which will be described later, and is used to interlock the finder block 44 with the movement of the flash device holding plate 36.
6f and a click spring 40.

The flash device frame 41 has a built-in arc tube, a reflective shade, etc. (not shown), and the guide groove 4 as described above.
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 and right directions in the figure, and a protrusion 41b protruding from the lower surface thereof.
As described above, the flash device detection lever 31 is brought into contact with the cam edges 31d, 31e, and 31f of the flash device detection lever 31 to displace the flash device detection lever 31 according to the position of the flash device frame 41, and the flash device detection lever 31 It has click grooves 41c and 41d that engage with the click spring 40 of the holding plate 36, and also has a protrusion 36f.
The step portion 41e on one side edge can come into contact with the step portion 41e.

42 is a hole 42a on the lower surface of the flash device frame 41.
The contact piece 42b slides on the patterns 43a and 43b of the circuit board 43 as the flash device frame 41 moves, and informs an IC (not shown) of the camera of the camera's shooting mode. It's becoming like that. Further, the flash device frame 41 has a charging contact (not shown), so that charging of the light emitting capacitor of the flash device starts in synchronization with the timing when the patterns 43a, 43b are turned on and off by the contact portion 42. It is configured.

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

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

First, let me explain about normal shooting mode.
The set plate 6 is set by a winding and charging mechanism (not shown).
slides to the right against the force of spring 8 and is locked in the charge position shown in FIG. It is rotated counterclockwise, and the pawl 12b of the stop pawl 12 engages with the pawl 9c to be locked at the charge position. FIG. 4 is a front view showing the main parts of the focus adjusting section including the distance ring 9 in the charged state.

Therefore, when you hold the camera facing the subject and press the release button (not shown) to the first stroke, the distance to the subject is stored in the camera's IC by a known distance measuring means, and then the release button is pressed to the second stroke. When pushed to the stroke, the setting plate 6 is unlocked and starts traveling at a constant speed to the left by the force of the spring 8 and the operation of a governor mechanism (not shown). The start signal of the set plate 6 is generated by the sliding of a contact piece (not shown) on the circuit pattern.
It is input to the IC and distance adjustment operation is started.

Here, when the subject is far away, the start signal from the set plate 6 does not energize the conductive pattern 1c of the rotor 1, so the rotor 1 remains at the position shown in FIGS. 3 and 4. On the other hand, as the setting plate 6 travels, the distance control lever 16 begins to move at a constant speed diagonally upward to the right from the state shown in FIG. and the pawl 1e of the rotor 1 come into contact with each other and stop in the state shown in FIG. At this time, since the direction of contact of the vertically bent portion 16f' of the distance control lever 16 with respect to the contact surface of the claw 1e of the rotor 1 is oriented in the direction of the rotation axis of the rotor 1, the rotor 1 is brought into contact with the contact surface of the claw 1e of the rotor 1. It does not twist or turn.

The set plate 6 travels further than the state shown in FIG.
The stop pawl 12 is rotated clockwise to disengage the pawl 12b of the stop pawl 12 from the pawl portion 9c of the distance ring 9. , the stop wheel 14 gear-coupled with the stop wheel 14 rotates counterclockwise, and the long-distance pawl 14c of the stop wheel 14 hooks the vertically bent portion 16g of the distance control lever 16, and the distance control lever 16 The upper side 16 is centered around the shaft 50a.
c is rotated counterclockwise until it comes into contact with the pin 20c of the movable lever 20, and is stopped in the state shown in FIG. Therefore, in this state, the photographing lens barrel 11 is extended by the cam portion 9f of the distance ring 9 and set at a long distance position. In addition, in the state shown in FIG. 6, the vertically bent portion 16 of the distance control lever 16 is
The contact between f' and the claw 1e of the rotor 1 has been removed.

Next, when the set plate 6 moves further to the left from the state shown in FIG.
The brake member 1d rotates clockwise in FIG.
, and continues to rotate clockwise following the travel with the set plate 6. However, when the rotor 1 and the set plate 6 come into contact, the shutter blades 4 and 5 are still in contact with each other.
does not begin to open.

After that, the set plate 6 further travels and the rotor 1
Shutter blades 4 and 5 are driven by the blade drive pin 3 of
is opened, and after the appropriate exposure amount to the film is detected by a known photometric means using the light receiving element 26,
The power to the rotor 1 is cut off, and the rotor 1 is connected to the spring 2.
The shutter blade 4 rotates counterclockwise due to the force of
and close 5.

Then, the set plate 6 continues to run, and stops when the hoisting motor energization switch (not shown) is switched to the motor energization side.

As a result, the camera uses a built-in winding motor to wind one frame of film through a well-known winding mechanism, and at the same time winds the film through the set plate 6 and the distance ring 9.
is charged, and the state shown in FIGS. 3 and 4 is reached again.

Next, when the subject is at a medium distance,
When you press the release button in the charging state as shown in Figure 4, the camera first releases as in the case of long distance shooting.
The distance to the object is stored in the IC, and then the set plate 6 is released from its lock and starts running, and as its contact piece slides on the circuit pattern, the start signal is input to the IC. be done. Then, the distance signal and start signal will cause the IC to
immediately issues a rotor energization signal, and the rotor 1 is energized by known circuit means, causing the braking section 1 of the rotor 1 to be energized.
d rotates clockwise until it abuts against the vertically bent portion 6b of the set plate 6. At this time, the distance control lever 16
The vertically bent portion 16f' of the rotor 1 has a positional relationship shown in FIG.

In this state, as the setting plate 6 travels, the distance control lever 16 slides diagonally upward to the right in the figure, and when the vertical bent portion 16f' passes over the pawl 1e of the rotor 1, the contact piece of the setting plate 6 Intermediate signals are input to the IC from the circuit pattern on which the is sliding. Then,
The IC outputs a rotor energization off signal based on the distance signal and the intermediate signal, and the power 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 vertically bent portion 16f' of the distance control lever 16, which has been further slid diagonally upward to the right, comes into contact with the pawl 1f of the rotor 1, resulting in the state shown in FIG. 8.

The setting plate 6 continues to travel, rotates the stopper pawl 12 clockwise in the same way as in the case of long distance, releases the engagement with the distance ring 9, and rotates the distance ring 9 to move the stop wheel 14. The intermediate distance pawl 14d of the stop wheel 14 hooks the vertical bent portion 16g of the distance control lever 16, and the lever 16 is rotated counterclockwise about the shaft 50a. It stops in the state shown in Figure 9. At this time, the photographing lens barrel 11 is set to the intermediate distance position by the distance ring 9. After this, the exposure operation is performed in the same way as in the case of long distance, and the state returns to the charge state shown in FIG. 3 again.

Also, when the subject is close,
At the time of release operation, the distance control lever 16 comes into contact with the vertically bent portion 16f' of the lever 1g of the rotor 1, and the vertically bent portion 16g of the distance control lever 16 with the short distance pawl 14e of the stop wheel 14. The operation is the same as in the case of long distance or medium distance described above.

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

Next, the operation of switching to flash photography mode and the photography operation thereof will be explained.

In the normal shooting mode shown in FIGS. 1 and 3, when you put your finger on the upper part of the flash device frame 41 and push it to the right in the figure, the flash device frame 41 will fit into the click groove 41d as shown in FIG. When the click spring 40 is disengaged, the guide groove 41a slides along the shaft 36e of the flash device holding plate 36, and the click spring 40 is released at the position where the left end of the guide groove 41a and the left shaft 36e come into contact. It engages with the click groove 41c and stops. At this time, the protrusion 41b of the flash device frame 41 that was in contact with the high cam edge 31d of the flash device detection lever 31 also moves to the right toward the low cam edge 31e, so that the flash device detection lever 31 is moved by the spring. The FA lever 21 is rotated counterclockwise by the force of 32, and the FA lever 21 which was in contact with the vertically bent portion 31c is also biased by the spring 2 via the distance signal lever 22.
It rotates clockwise by the force of 3, and stops when the vertically bent portion 22d of the distance signal lever 22 and the vertically bent portion 16f of the distance control lever 16 come into contact with each other. on the other hand,
As the flash device frame 41 moves, a charging contact (not shown) closes, and at the same time, charge is supplied from the power source to the main capacitor for light emission, and at the same time, the contact portion 42 notifies the IC that the camera has entered the flash photography mode.

In this state, when you point the camera at the subject and press the release button, the distance measurement device (not shown) measures the distance to the subject, and the distance signal is stored in the IC, as in the normal shooting mode described above.
The set plate 6 is unlocked and starts moving to the left, and the contact piece provided on the set plate 6 slides on the circuit pattern, so that a start signal is input, and the set plate 6 In conjunction with the travel of the vehicle, the distance control lever 16 also travels diagonally upward to the right.

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 energizes and de-energizes the rotor 1 as shown in the timing chart of FIG. 17b. The photographing lens barrel 11 is set at an extended position corresponding to each subject distance, and the vertically bent portion 16f of the distance control lever 16 is connected to the vertically bent portion 22d of the distance signal lever 22 in the flash photography mode as described above. Since they are in contact with each other, the distance signal lever 22 rotates counterclockwise around the shaft 22a in conjunction with the movement of the distance control lever 16 diagonally upward to the right, and at the same time, the FA lever 21 rotates clockwise. The cam portion 21d enters the locus of movement of the blade drive pin 3 of the rotor 1.

By the way, as described in the operation in the normal shooting mode, the distance control lever 16 has a different stopping position depending on the subject distance, so the cam surface of the cam portion 21d of the FA lever 21 guides the flash device accordingly. In order to obtain an appropriate aperture value according to the number (GN ₀ ), the shutter blades are formed so that the opening degree changes.

Therefore, by the stop setting operation of the stop car 14 and the distance control lever 16 according to the subject distance.
The FA lever 21 is also stopped at the corresponding position,
Further, the set plate 6 travels, and the rotor 1 rotates clockwise due to the energization, and the shutter blades 4 and 5 are opened until the blade drive pin 3 comes into contact with the cam portion 21d of the FA lever 21, and the shutter blades 4 and 5 are opened. The shutter blades 4 and 5 are held in the caliber state. Next, when the amount of light measured by the light receiving element 26 reaches the appropriate exposure amount for the film, or even if the amount of light has not yet reached the appropriate exposure amount, after the preset maximum aperture time has elapsed, the camera The IC issues a shutter close signal, and at the same time the power to the rotor 1 is cut off by known circuit means, the arc tube of the flash device frame 41 emits light.

In this way, in the same way as in the normal photographing mode, proper exposure can be obtained during flash photography 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 photography mode and the photography operation thereof will be explained.

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 pushed to the left. As a result, the flash device holding plate 36 rotates clockwise around the hole 36a with its protrusion 36f pushed by the flash device frame 41, and stops at the position where its protrusion 36c abuts against the stopper 39. At this time, the reset lever 33 is moved upward in the figure by the force of the spring 19 of the proximity reset lever 18 with its tip 33d coming out of contact with the protrusion 36c, and by the force of the spring 37 of the flash device holding plate 36. Locks the return rotation in the counterclockwise direction. Also,
At this time, the flash device frame 41 rotates clockwise around the hole 36a integrally with the holding plate 36, so that the illumination direction is suitable for close-up photography.

As the flash device frame 41 rotates clockwise, the flash device detection lever 31 moves to the cam edge 31, which has a high contact surface with the protrusion 41b of the flash device frame 41.
By moving from d to the lower cam edge 31f side,
As in the flash photography mode described above, rotate counterclockwise to release the FA lever 21 and the distance signal lever 22.
release the constraints on On the other hand, the flash device holding plate 36
When the protrusion 36f rotates in the clockwise direction, the contact position of the protrusion 36f moves from the cam part 44e of the finder block 44 to the lower cam part 44f, so that the finder block 44 is moved around the shaft 44a by the force of the spring 45. Rotates counterclockwise, that is, toward the optical axis side of the photographic lens.

Here, regarding the distance measuring system used in this embodiment, as shown in FIG. This is a triangulation method in which the distance is measured by focusing the image on the light receiving element 47 using the light receiving lens C, and in the normal shooting _mode shown in _{FIG .} Long range zone Z ₁ , medium range zone Z ₂ , short range zone respectively
Z ₃ , but as mentioned above, when the viewfinder block 44 rotates, that is, the light receiving element 47 side rotates to switch to the close-up shooting mode, the distance measurement zone is based on the distances l ₁ , l ₂ , and l ₃ . The long distance zone Z′ ₁ , medium distance zone Z′ ₂ , and short distance zone Z′ ₃ are set respectively, and the long distance zone Z′ ₁ overlaps with the short distance zone Z ₃ in the normal shooting mode. Set. Further, the finder field of view is also rotated by the same amount as the distance measuring system to perform short distance correction.

As described above, the flash device frame 41 itself also rotates clockwise in the figure around the hole 36a of the flash device holding plate 36, and the amount of rotation also matches the short-distance correction amount for the light emission direction of the flash device. It's becoming like that.

Furthermore, upward movement of the reset lever 33,
That is, when the proximity reset lever 18 is rotated counterclockwise, as shown in FIG. 12, the restraint on the movable lever 20 is released and the movable lever 20 can be rotated further clockwise by a certain angle than the state shown in FIG. Therefore, since the position of the pin 20c of the movable lever 20 is displaced upward from the position in the normal shooting mode, the distance control lever 16 can also be displaced upward accordingly, and the distance ring 9, that is, the amount of extension of the photographing lens, is significantly shifted toward the short distance side compared to the normal photographing mode.

Moreover, the upward movement of the reset lever 33
As shown in FIG. 2, the display section 33e protrudes outward from the camera, and at the same time informs the photographer that the camera is in the close-up shooting mode.
By pushing in e against the force of the spring 19, the engagement between the tip 33d of the reset lever 33 and the protrusion 36c of the flash device holding plate 36 is released, and the flash device holding plate 36 is pushed back by the force of the spring 37. It also serves to rotate it clockwise and return it to the normal shooting mode position shown in FIG.

The slide operation of the flash device frame 41 to the close-up shooting mode is performed by sliding the contact piece 42b of the contact piece part 42.
slides on the patterns 43a and 43b of the circuit board 43, notifying the IC flash photography mode, and at the same time, the main capacitor for light emission is charged, and its vertical portion 36d closes the stepped portion of the close-up lever 28. 28c and slide it to the left against the force of the spring 30, and the close-up lever 2
The ISO switching lever 24 is rotated clockwise by the shaft 28b of FIG. The distance signal lever 22, to which the shaft 22a at one end is fitted, also rotates counterclockwise in the figure approximately around the vertically bent portion 22d that abuts the vertically bent portion 16f of the distance control lever 16. As a result, the distance signal lever 22
The pin 22c moves to the right in the figure, rotates the FA lever 21 fitted with it clockwise,
The cam portion 21d that comes into contact with the blade drive pin 3 of the rotor 1 moves so as to control the shutter blades 4 and 5 to a smaller aperture than in the flash photography mode.

In the state set as above, the 13th
When you point the camera at a nearby subject at the camera charge position shown in the figure and press the release button, the distance measuring device performs a distance measuring operation in the same way as during normal shooting, and then the set plate 6 is locked. When it is removed and the set plate 6 begins to travel, the vertically bent portion 22d of the distance signal lever 22 also aligns with the vertically bent portion 16 of the distance control lever 16.
It moves to the right following the movement of f.

By the way, when the subject is in zone Z' ₁ shown in FIG. Since the angle α with respect to C is mechanically corrected to β in the close-up photography mode, a distance measurement signal is input to the distance measurement device of the camera as if the subject were far away. Therefore,
The focus adjustment unit of the camera operates in the same way as when the subject is far away 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 bent portion 16f' of the distance control lever 16 and the rotor 1 are not energized.
The distance control lever 16 comes into contact with the long-distance claw 1e, and the distance control lever 16 stops moving in the state shown in FIG. Thereafter, the set plate 6 travels further and disengages the distance ring 9 and the stop pawl 12. As a result, the distance ring 9 is rotated counterclockwise by the force of the spring 10, and the stop wheel 14 that is gear-coupled with the distance ring 9 is rotated counterclockwise. Vertical bent portion 16 of distance control lever 16
g is engaged, the distance control lever 16 is rotated counterclockwise about the shaft 50a, and as shown in FIG. , it rotates further and stops when it comes into contact with the pin 20c of the movable lever 20, as shown in FIG. 16, and the extension of the photographic lens is stopped.

The amount of movement of the pin 20c is determined so that the extended position of the photographic lens at this time is a close-up photographing position within the range shown in FIG. 11b.

After that, the set plate 6 further travels, a 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 The opening of the shutter blade stops at that position and the film is exposed, but the position of contact is the same as that in the flash photography mode by the amount that the close-up lever 28 has moved to the left as described above. That is, as the FA lever 21 is rotated clockwise, the aperture opening becomes smaller, so that 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 an abort signal after a preset opening time, the flash device emits light at the same time, the shutter blades 4 and 5 also close, and the film exposure operation ends.

Thereafter, the set plate 6 moves further, and at the same time as the motor energization switch is switched to the motor energization side by a known means, the film is unfastened. As a result, the camera winds the film and charges the shutter and photographing lens barrel operating system, and at the overcharge position, which is the final stage of the charging operation, the end 6f of the set plate 6 moves to the arm of the close reset lever 18. 18c, the proximal reset lever 18 is rotated significantly clockwise against the force of the spring 19, and as a result, the reset lever 33 is moved against the force of the spring 3.
It slides downward due to the force of 5, and its tip 3
3d and the projection 36c of the flash device holding plate 36, the flash device holding plate 36 is moved by the spring 37.
The force rotates counterclockwise and returns to the normal photographing mode position shown in FIGS. 1 and 3. At this time, the finder block 44, the flash device frame 4
1 and the FA (flash auto) mechanism parts also return to their normal shooting mode positions.

Then, when the overcharging is completed, the set plate 6 returns to the charge locking position, and the normal photographing mode shown in FIG. 3 is entered.

As explained above, the present invention can significantly extend the subject-linked distance by switching the camera's shooting mode using a small-scale distance measuring device, thereby increasing the utility value of the camera. Switching is linked to the camera's charge operation and automatically returns to the normal shooting mode, which prevents erroneous operations by the photographer and makes operations easier.

Further, during flash photography, the optical axis of the flash device can be automatically returned to the normal photography mode in conjunction with the completion of photography.

[Brief explanation of the drawing]

1 and 2 are perspective views showing the external appearance of the camera according to the present invention, and FIG. 1 shows the normal shooting mode;
Figure 2 shows the close-up shooting mode, Figure 3 is an exploded perspective view of the main parts of the internal mechanism in the normal shooting mode, and Figures 4 to 9 are explanatory diagrams of the focus adjustment operation section. , in order: charge position, long-distance adjustment in progress, long-distance adjustment completed, middle-distance adjustment in progress,
Similarly, the intermediate distance adjustment is in progress and the middle distance adjustment has been completed, and FIG. 10 is an exploded perspective view of the main parts of the internal mechanism in the flash photography state in the normal photography mode.
FIG. 11 is an explanatory diagram of distance measuring zones by switching the distance measuring device in conjunction with switching of the shooting mode, where a shows the normal shooting mode, b shows the close-up shooting mode,
FIG. 12 is an exploded perspective view of the main parts of the internal mechanism in the close-up mode, and FIGS. 13 to 16 are explanatory diagrams of the focus adjustment operation section, in order: charge position, distance adjustment midway, Similarly, each state is shown in the middle of long-distance adjustment and after the end of long-distance adjustment, and FIG. 17 is an operation waveform diagram showing the timing of energizing the rotor that controls the focus adjustment device of the camera, where a is the normal shooting mode and b is the same. c indicates the time of flash photography and close-up photography mode, respectively. 1... Rotor, 4, 5... Shutter blade, 6...
...Set plate, 9... Distance ring, 11... Photographing lens barrel, 12... Stop claw, 14... Stop wheel, 15... Lens barrel 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...Photodetector, 28
...Close-up lever, 31...Flash device detection lever,
33... Reset lever, 36... Flash device holding plate, 38, 39... Stopper, 41... Flash device frame, 44... Finder block.

Claims (1)

[Claims] 1. Normal shooting in which distance measurement is performed to a subject within a first distance range, and distance measurement is performed to a subject within a second distance range that includes a shorter distance than the first distance range. In a camera capable of switching between close-up photography, a first member is provided with a biasing force in a first direction by a first spring force, and a first member is in contact with the first member and resists the spring force against the first member. a second member biased by a second spring force for moving the first member in a second direction opposite to the first direction; a blocking member for preventing the first member from moving in the second direction; and a switching operation member for switching from normal photography to close-up photography, and operation of the operating member causes the blocking member to move in the second direction of the first member. from a blocking position that prevents movement of the blocking member to a release position against a third spring force that applies a biasing force to the blocking member in a direction from the released position to the blocking position, and moves the first member in a second direction. By moving the first member to the blocking member that has been moved to the release position, the third spring force prevents the blocking member from moving to the blocking position, and the distance measurement when the blocking member is located at the blocking position Optical axis converting means is provided to set the optical axis angle of the optical system or the viewfinder optical system to be larger with respect to the photographing optical axis in conjunction with the movement of the blocking member to the release position, so that the angle can be changed from normal photographing to close-up photographing. by changing the distance measuring or finder optical axis and manually moving the first member in the first direction against the second spring force, the first member moves the blocking member to the blocking position. The blocking is released and the blocking member is moved to the blocking position by the third spring force to return the rangefinder or finder optical axis to the optical axis direction during normal shooting. A release member is provided to cancel the influence of the biasing force on the first member due to the spring force, and when shooting is completed, the first member is moved in the first direction by the first spring force, and the distance measurement or finder optical axis is normally adjusted. A camera characterized by automatically returning to the optical axis direction at the time of shooting. 2 Switching between normal shooting, which measures the distance to a subject within the first distance measurement range, and close-up shooting, which measures the distance to a subject within the second distance range, which includes a shorter distance than the first distance range. a first member that is biased in a first direction by a first spring force; a second member biased by a second spring force for moving the first member in a second direction opposite to the first direction; and a switching operation member for switching from normal photography to close-up photography, and the prevention member prevents the first member from moving in the second direction by operating the operation member. By moving the first member from the blocking position to the releasing position against a third spring force that applies a biasing force to the blocking member in the direction from the releasing position to the blocking position, and moving the first member in the second direction. The first member is joined to the blocking member that has been moved to the release position to prevent the blocking member from moving to the blocking position due to the third spring force, and the flashing light of the flash device is activated in conjunction with the movement of the blocking member to the released position. an optical axis converting means for shifting the axis toward the subject within the second distance range, and changing the flash light axis toward the second distance range when switching from normal photography to close-up photography; is manually moved in the first direction against the second spring force to release the first member from preventing the blocking member from moving to the blocking position, and the third spring force moves the blocking member to the blocking position. A release member is provided to move the flash light to the blocking position and return the flash optical axis to the optical axis direction during normal photography, and also to cancel the influence of the biasing force on the first member due to the second spring force of the second member at the end of photography. A camera characterized in that the first member is moved in the first direction by a first spring force at the end of photographing, and the flash optical axis is automatically returned to the optical axis direction during normal photographing.