JPS60242443A - Camera - Google Patents

Abstract

PURPOSE:To prevent a flash device from being set at its in-use position during carrying by allowing a lens protecting member to move between the 1st position where the member protects the front surface of a photographic lens and the 2nd position where the member moves away from the front surface of the photographic lens, locking the flash device at its out-of-use position associatively with the movement of the lens protecting member to the 1st position. CONSTITUTION:If a strobe device is raised to the in-use position when a lens part is stored, the strobe device is stored automatically in association with the storing operation of the lens part. Namely, when the lens part is stored, the arm 13a of a lever 13 is off the movement stroke of members 4-10 and 12, so the lens part is stored, but the arm 13a is at the lower part in the movement stroke of the belt arm part 11b of a lever 11. The lever 13 is rotated clockwise on the storing operation of the lens part and then stored. Further, the bent arm part 11b is brought into contact with the arm part 13a of the lever 13 when the lens part is stored and locked with a lock claw 5b, and then the strobe device part 3 is never raised against a spring 13c owing to vibrations of the camera.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a camera, and more particularly to an improvement in a camera equipped with a flash device.

Generally, in a camera equipped with a flash device, the flash device is stored in a position that allows the camera to be made compact when being carried, and when taking pictures, the flash device is protruded at a distance δ away from the photographic lens to prevent red-eye. I'm letting you do it. For this reason, conventionally, the flash device would stick out while being carried, which was inconvenient, and the user would not notice that the flash device was sticking out, causing the device to hit something and break it.6 The present invention has the following features. This was done in consideration of the circumstances, and in cameras where the flash device can be moved between a used position and a non-used position, it is not possible to move the flash device between the first position, which protects the front of the photographic lens, and the second position, where it is retracted from the front of the photographic lens. 〉・The flash device is configured to be locked in the non-use position T in conjunction with the movement of the protective member to the first position, thereby preventing various accidents caused by the flash device being in the use position when carried. The aim is to provide a camera that is 1F-proof.

Embodiments of the camera according to the present invention will be described in detail below with reference to the drawings.

Figures 1 and 2 are partially cutaway external views of the camera according to the present invention, with Figure 1 showing the camera in a flash photography ready state and Figure 2 showing the camera in a folded state. It is a diagram. In the figure, 1 is the shutter button, 2 is the objective lens of the finder, 3 is the strobe device as a flash device built into the camera, 4 is the photographing lens, 5 is the lens cover as a lens protection member, and 5a is the front bending of the lens. Department,
5b is a lock pawl, and 5c is a release knob. 6 is a bellows that connects the shutter case 7 and the camera body in a flexible and light-tight manner. Reference numeral 8 denotes a shutter charge lever, and 8' indicated by a dotted line on the right side of FIG. 1 indicates the position when the shutter charge is performed by operating the lever. Reference numeral 9 indicates the insulating protrusion 8 when the shutter is released and the lever 8 is displaced to the illustrated position.
This is a switch that is turned off by a. 10 has one end rotatably supported by the front bent portion 5a of the lens lid, and the other end rotatably supported by one end of the lever 11.

The other end of the lever 11 is rotatably supported by a fixing member (not shown) on the camera body side, similar to the rear fulcrum of the lens lid.

In addition, an elongated hole 11a is provided at the position /<-11, into which a pin implanted at one end of the lever 12 is inserted. The lever 12 is a fixing member (not shown) on the camera body side.
It is rotatably supported by a spring 1.2a on the other end, and is urged to rotate clockwise. One end 13a of the lever 13, which is rotatably supported by a fixed member (not shown) of the camera body, intersects with the bent arm portion 11b of the lever 11 so as to be operationally connectable. The pin 13b implanted at the other end is connected to a long hole 3 formed in the cover of the strobe device 3 as shown in the first figure.
It is played by a. Also, the lever 13 has a spring 13c.
This spring 13c changes the rotational force of the lever 13 in the counterclockwise direction in the state IA shown in the first drawing, and when the lever 13 is rotated clockwise, the rotational force is reversed in the clockwise direction. It is meant to be given. The insulating pin 13d embedded in the lever 13 is a normally open switch 1.
4 is forcibly closed in the state shown in the first diagram.

Reference numeral 15 provided on the outer surface of the camera is a switch plate, which is naturally pressed by a finger when the photographer holds the camera, thereby opening a normally closed switch to be described later. In addition, the strobe device 3 and the 3 provided on the camera side
Shock-absorbing members b and 3c are made of rubber material, for example, and are used to soften the shock when the strobe device 3 is housed as shown in the second figure.

The camera shown in the first figure is portable as shown in the second figure, so that the lens unit and flash device can be folded into a storage space provided in the camera body when not in use. When folding the foldable lens unit constituted by the above-mentioned 4 to 12 members, when the lever 12 is rotated counterclockwise against the lever 12a, the pin implanted therein is inserted into the elongated hole 11a of the lever 11. Move inside and press lever 1
0 is housed in the state shown in the second figure while rotating counterclockwise. In the retracted position, the lock claw 5b engages with a fixing member (not shown) on the camera body side, and the lens cover 5 is held in the state shown in the second figure to protect the front surface of the photographic lens.

In order to return to the state in which the lens cover 5 shown in the first figure is retracted from the front surface of the photographic lens, it is only necessary to operate the knob 5c to release the lock claw 5b, and the force of the spring 12a will naturally shift the lens lid 5 to that state. do.

By the way, when storing the lens part, if the strobe device is raised to the use position as shown in the first drawing, the strobe device is automatically moved to the position shown in the second drawing in conjunction with the storage of the lens part. It will be stored. That is, when the lens part is stored, the arm 13a of the lever 13 is outside the movement path of the members 4 to 10 and 12, so the lens part can be stored, but +tf
k 13 & is located below the bending arm portion 11b of the lever 11 within the shift stroke. Therefore, when the lens unit starts to be retracted, the lever 1
3 is rotated clockwise and then stored as shown in the second figure. Note that if the lens part is housed and the bent arm part flb is in contact with the arm part 13a of the lever 13 even though it is locked by the lock claw 5b, the second
In the figure m;, it is convenient because the robot device part 3 does not rise against the spring 13c due to the vibration of the camera.

It is clear from the above description that it is possible to store only the strobe device section from the strobe photography enabled state shown in the first figure, and that it is also possible to store the lens section from that state.

It is possible to pull out only the lens section from the portable storage state shown in the second figure because it cannot be obstructed by the lever 13, and it goes without saying that it is also possible to raise the strobe device section after that.

However, it is impossible to raise only the strobe device from the state shown in the second figure. When attempting to pull up the strobe unit from the state shown in the second figure, the lever 13 is rotated counterclockwise, but its arm 13a is in contact with the bending arm 11b, and a force is applied in the direction to pull out the lens unit. is given. However, since the lens section is locked by the lock claw 5b, it cannot be pulled out, and it is also impossible to raise only the strobe device section. The reason for this configuration is that it is completely meaningless for photographing to enable only the strobe device even though the lens section is disabled. It is also possible to adopt a folding system in which the lock claw 5b is omitted, the spring 12a is deformed so as to apply force in the opposite direction, and 11 stages of locks (not shown) are provided to lock the lens part in a pulled out state. However, even if the strobe device 8R is deformed in this way, it is impossible to pull up only the strobe device 8R from the state shown in the second figure. When the strobe device section is grasped and pulled up, the lens section is also pulled out in conjunction with this, as shown in the first figure. becomes the state of It goes without saying that the above configuration is also a practical configuration.

Next, the switch 14 will be explained.

As mentioned above, the switch 14 is a normally open switch that is turned on only when the lever 13 is in the position shown in FIG. The strobe charging circuit is configured to be closed only when the device section is raised. The distance of this switch 14 (1 m) will be explained next in relation to the storage state of the lens section and the strobe section.

In this embodiment, when the lens section is retracted, the strobe section is also retracted in conjunction with it, and in the portable storage position yE shown in the second figure, the strobe is not charged because the switch 14 is off. Power is prevented from being wasted. Therefore, the camera of the present invention solves the serious problem of the frequent waste of power due to forgetting to turn off the power switch in strobes. Further, when normal photographing using natural light is intended, only the lens portion is pulled out and the switch 14 remains off, thereby similarly preventing power consumption.

When the strobe device is pulled up with the intention of photographing with a strobe, the lens section is also pulled out in conjunction with this, the state shown in the first diagram is obtained, and the strobe is immediately charged, making strobe photographing possible. Note that when it is no longer necessary to use the strobe, or when the strobe has been interrupted for a while, the strobe unit will naturally retract.
In conjunction with this, the strobe charging circuit is turned off. Therefore, there is no need to forget to turn off the strobe charging circuit.

The functions of the switch 9 and the switch plate 15 shown in FIGS. 1 and 2 will be described later.

3 and 4 are enlarged sectional views of essential parts of the camera according to the present invention shown in FIGS. 1 and 2. FIG. In FIGS. 3 and 4, 15 is the switch plate. The switch board 1
5 is attached to the recess 16a of the frame 16 of the camera body, and normally! , it is slightly protruded by the external force of the camera due to the pressure of the contact piece of the IJ changeover switch 17, or when the camera is held by the photographer, it is naturally suppressed by the photographer's fingers, and the changeover switch 17 is changed from contact piece 17z to VJ changeover switch 172. . 155', 16f.

17' are the switch plate 15 and the switch plate holding part 1, respectively.
6a, which corresponds to the changeover switch 17 and is provided on the rear outer wall of the camera. When both the switch plates 15 and 15' are provided, the interlocking switch switches 17 and 1 are provided.
7' are used by connecting them in series or in parallel, but it is also possible to provide only one of the switch plates 15 and 15'.

18 is a cassette in which a self-processing film unit 19 as shown in FIG. 7 is housed;
Reference numeral 18a denotes an exposure frame portion located behind the exposure frame portion 16b of the frame 16 of the camera body when the cassette 18 is loaded into the camera. Through this, a subject image is formed on the photosensitive layer of the film unit 19 located at the forefront by the shutter, the diaphragm, and the photographing lens 4 provided in the shutter frame 7, and is exposed to light. 18b is a cassette delivery port for delivering the exposed film to the outside of the cassette 18;
c is the outlet of the camera body frame. 18c is a notch of the cassette, and a notch 16e is also formed at a corresponding position in the camera body frame 16. Kasetsu) 18
The film unit 19 shown in detail in FIG.
31, it is possible to use a pre-aligned integrated film unit comprising an image recording section 103 consisting of an image receiving layer 1032 and the like and a developing agent storage chamber 104. This film unit) 19 is known, for example, from Japanese Patent Application Laid-Open No. 49-45722. 20 is a film unit pressure plate, and cassette 1
A notch 20 is provided in a portion corresponding to the notch 18c of No.8.
The film unit 19 is brought into close contact with the exposure frame 18a of the cassette by the force of the pressure spring 21. 22 is a black back for attaching and removing the cassette, 22a is its rotating shaft, and 22b is a lock claw. Wanted lock claw 2
When the cassette is released and opened by rotating counterclockwise around 22a, the cassette can be attached or removed.6Also, when the back cover 22 is closed, the cassette is removed by the cassette pressure spring 23 provided thereon. is pressed upward, thereby determining the relative position between the camera body frame 16 and the cassette 18,
Furthermore, the relative positions of the cassette 18 and the film unit 19 are determined as described above. Therefore, the position of the photosensitive layer 103 of the film unit 19 is determined, and a focused image is obtained there. Reference numeral 24 denotes a film presence/absence detection lever, which is rotatably supported by a fixing member (not shown) of the camera body and rotated counterclockwise by a spring 24a. Units)
19. However, if there is no film unit 19 in the set 18, since the film pressure plate 20 is provided with the notch 20a as described above, it rotates counterclockwise from the state shown in the figure, turning off the normally closed switch 25. Needless to say, the switch 25 is turned off when the cassette 18 is not loaded into the camera. According to the detection lever 24, when the film unit 19 starts to be fed to the left, the switch 25 will be turned off immediately, but according to the circuit described later, this will not cause any trouble. . 26 and 27 are rollers for feeding the film unit 19 to the left and uniformly applying a developing agent to the image recording area of the exposed film unit. Also, 16e is the roller 26.27
This is a slit-shaped opening provided in the camera body frame 16 in order to send out the film unit 19 fed out of the camera, and a weak leaf spring 16f is provided here, so that the developing process is still sufficiently progressing. This prevents the film unit that has not been processed from being exposed to light, and also prevents the film unit that has been processed from falling off the camera. In FIG. 4, 18d is a notch in the cassette 18, and 16g is a notch in the camera body frame 16 at a corresponding position.

Reference numeral 28 denotes a film unit feed pawl, which can be moved in the left-right direction by an elongated hole 28a, and is normally pulled to the right by a spring 28b. However, when part 28a is pushed by the rotation of the motor, it moves to the left and the claw part 28a at the tip
c pushes the rear end 19a of the film unit 19 until its tip 19b engages with the rollers 26 and 27 described above. 29 is an electric motor, 29a is its pinion carrier, 30 is a gear that meshes with the above-mentioned 2'9a, 30a and 3'Ob are a pulley and car that rotate together with the above-mentioned 30, 31 is a gear that meshes with the above-mentioned 30b, It is a pin that can be operatively connected to the rear end 28d of the film unit feeding claw 28 and turns off the normally open switch 32 when feeding of the film unit is completed. 33 is the pulley 30a
A gear 33a that rotates integrally with the pulley driven by the belt 34 is engaged with a gear 26a that rotates integrally with the roller 26, which in turn engages with a gear 26a that rotates integrally with the roller 27.
It meshes with a.

Next, the operation of the film feeding mechanism etc. shown in FIGS. 3 and 4 will be explained.

First, as described in FIGS. 1 and 2, pull out the lens unit, move the shutter charge lever 8 to the 8' position, and press the shutter button l to activate the shutter and film unit 19. is exposed. If the film unit 19 is loaded, the switch 25
is on, the motor 29 is started by the circuit described later in FIG. At the time of starting, the pin 31a closed type switch 32 is turned off, and the motor 29 is powered and started without going through the switch 32. Pinion carrier 29a
When the wheel rotates in the 1 direction, each carrier and pulley 3
0a rotates, and the pin 31a moves as the carrier 31 rotates in the 21 direction. The film unit feed claw 28 moves to the left by being pushed by the pin 31a, and pushes the rear end 19a of the film unit 19 with the claw 28C at its tip, until its tip 19b reaches the rollers 26 and 27 sufficiently. It is pushed out until it engages. The rollers 26 and 27 are rotated by a motor 29 via gears, pulleys, and helmets 1.
Push it to the left until it leaves ゜27. At this time, a developing agent is applied, and a visible image is eventually obtained within the film unit. After the above-mentioned feeding of the film 22) 19 is completed, the pin 31a rotates to turn off the switch 32, thereby cutting off the power supply to the motor 29 and stopping the motor 29. The normal photographing operation is carried out as described above, and the details will be explained in detail from FIG. 5, including the relationship with the safety switches 17 (17') and 25.

FIG. 5 shows a drive control circuit for the electronically controlled AE rasher and film feed motor, and FIG. 7 shows the strobe circuit.

In FIG. 5, 500 to 506 are photometric time control circuits, and when the camera's count switch 500 is turned off, the photocurrent of the photovoltaic photoelectric conversion element 501 is used to connect the input and output of the high-power impedance operational amplifier 502. Charging is started in the second time 4'1 minute condenser 503 connected to the second time 4'1 minute condenser 503, and when the output voltage of the operational amplifier 502 rises to a certain level, the level detection circuit 504 is inverted and the trailing curtain stop magnet 505 is turned off. Exposure ends. 506 is a constant voltage power supply for bias level setting. 507 to 533 are motor control circuits for automatically feeding out the photographed film; 507 is a switch for detecting the absence of film 1; 508 is a switch for detecting the absence of film (turns off if there is no film); Switches 509 and 509' are transfer switches that are turned on and off respectively when the camera's film feed exit area is held by hand, and 510 is a transfer switch that is turned off only when the rear curtain locking magnet 505 It is a safety switch that turns off after it is turned off or after a certain period of time.

When the film feed exit area is not held by hand (switch 509 is off and switch 509' is on), when shutter control magnet 505 is turned off, transistor 517 is turned on and transistor 518 is turned off.
Since level detection circuit 520 is in a non-inverting state for a certain period of time determined by resistor 513 and capacitor 519, transistors 521 and 522 are held off, and as a result, power supply control transistor 523 is held on for a certain period of time. When film is loaded in the camera, the switch 507 is on, so the moment the trailing curtain locking magnet 505 is off, the transistor 524 is turned on through the switches 510 and 507, and the following resistors 525 to 528. ) Since the latch circuit consisting of transistors 529 and 530, diode 531, and capacitor 532 enters a self-holding state,
The film feeding motor 533 rotates, and the film feeding completion switch 508 is turned on to maintain power supply to the motor, thereby feeding the film. When the film feeding is completed, the film feeding completion switch 508 is turned off, and the transistor 523 is turned off before that.
The power supply to the latch circuit of resistors 525 to 532 is cut off,
Self-holding is released and power supply to motor M is stopped.

In addition, when the film feeding outlet is held, the switches 509 and 509' are connected in the l direction, contrary to the illustration, so the motor M does not rotate, and when you take your hand off the feeding outlet, The switches 509 and 509' are connected as shown.

Power is supplied to the motor M via the transistor 523 for a certain period of time determined by the resistor 513 and the capacitor 519. When the motor M rotates 1-11 and the film feeding completion switch 508 is turned on, the transistor 52
3 is turned off, the power supply to the motor M, which is the normal path, is maintained.

When the film is not loaded, the film EI non-detection switch 507 is off, so the transistor 524 is turned off, the latch circuits 525 to 532 are inactive, and no power is supplied to the motor M. . Furthermore, the safety switch 510, which turns off after a slight delay after the shutter control magnet 505 is turned off, is necessary in cameras other than those in which the count switch 500 automatically returns and turns on when film feeding is completed. This is a safety switch to prevent malfunction. Without this switch 510, when the film is stopped near the film feeding exit after film feeding is completed, the switches 509 and 509' are connected in the opposite direction as shown in the figure, so transistors 521 and 522 are turned off and transistors 523 are turned on. Therefore, the latch circuit enters a self-holding state, and when the hand is released from near the exit of the film speed, the motor M rotates again and the film that has not been photographed is fed.

The safety switch 51θ is a safety switch for preventing this kind of malfunction in this circuit.

Note that the film presence/absence detection switch shown in the third figure turns off a little after starting to feed the film in the cassette, but because of the latch circuit, the switch 507 turns off after starting to feed the film in the cassette. Film feed even if 7 is turned off.
The motor M operates until the transfer is completed r. Reference numeral 540 is a buzzer as a warning device, and if the exit of the film feed is held with the hand after shooting, a warning sound is emitted via the switch 509', which causes the user to move the hand and start feeding. This is also to prevent errors such as uneven development due to re-halting during feeding.

Further, 550 is a coil for prohibiting power supply to the strobe while power is being supplied to the motor.

Next, the strobe circuit will be explained with reference to FIG. In FIG. 6, the same members corresponding to those in FIG. 5 will be described with the same reference numerals.

534,535.550.533.50 in Figure 6
5 respectively the above-mentioned power switch, power supply, electromagnetic magnet,
Motor, shutter control magnet. Also 601
Reference numeral 602 is a motor control circuit detailed in FIG. 5, and 602 is a motor drive Hi11 circuit. 603 is a switch that is turned off while the electromagnetic magnet 550 is being fed, that is, while the motor 532 is rotating; 604 is a switch that is turned off when there is no film (corresponding to switch 25 in FIG. 3); 605 and 606 are both strobe device 3
This is a switch that is turned on when the trigger occurs, and corresponds to the switch 14, only one of which is shown in FIG.

607 is a synchro contact, 608 is a known step-up rectifier circuit, 609 is a main condenser, and 610 and 611 are resistors that constitute a voltage divider circuit and turn on the neon tube 612 when charging is completed.

613, 614, 615, 616 and 617 constitute a known trigger circuit. They are a resistor, a capacitor, a secondary coil, a secondary coil and a trigger electrode. Further, 618 is a discharge tube.

The strobe circuit configured as described above operates as follows. That is, the power supply 535 is connected to the boost rectifier circuit 60.
8, charging will take place in the same way as a conventional strobe.

The neon tube 61'2 lights up, and the synchro contact 607 turns on, causing the discharge tube 618 to emit light. However, if the strobe is stored, the main condenser 60
9 is sufficiently charged, the switch 606 is off, so even if the synchro contact 607 is turned on, no light is emitted. Of course, charging will not occur. Further, if the fluid is not filled, the switch 604 is turned off and charging is not performed. Furthermore, the motor 533 is supplied with power, and the electromagnetic manganese l-
550, charging is not performed even while the switch 603 is turned off.

As described above, according to the present invention, in a camera in which the flash device is movable between a use position and a non-use position, there is a first position that protects the front surface of the photographic lens and a second position that is retracted from the front surface of the photographic lens. Since the flash device is configured to be locked in a non-use position in conjunction with the movement of the lens holder 1□, which is movable to the second position, to the first position, the flash device can be locked in a non-use position. Various +11s that occur when the device is in the use position
The effect is extremely large.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of a camera according to the invention, showing a state in which photography is possible. FIG. 2 is an external perspective view of a camera according to the present invention, showing a state in which a strobe device and a photographing lens section are housed within the camera body, and photographing is disabled. FIG. 3 shows the camera according to the present invention shown in FIG.
FIG. 3 is a cross-sectional view taken in the direction of arrows. FIG. 4 is a view showing the film feeding section of the camera according to the present invention shown in FIGS. 1 to 3 in T-thin. FIG. 5 is a drive control circuit diagram of the electronically controlled shutter and film feed motor used in the camera according to the present invention. FIG. 6 is a control circuit diagram of a strobe device used in a camera according to the present invention. FIG. 7 shows a self-developing film unit that can be used in the camera according to the present invention. FIG. 7(a) is an external perspective view thereof, and FIG. 7(b) is a sectional view taken along the line A-A in FIG. 7(a). 3... Strobe device, 5... Lens lid. 13... Lever, 14... Switch, 15... Switch base, 19... Film unit, 32... Switch. 41f, IT applicant Canon Co., Ltd. Procedural Amendment Damage (Presently May 24, 1985, Commissioner of the Patent Office Manabu Shiga Case Display April 25, 1985 [Special M4If'12 filed by Co.] Name of the invention) Relationship with the case of the person making the amendment Patent applicant address 3-30-2 Shimomaruko, Ota-ku, Tokyo Name (100
) Canon Co., Ltd. Representative: Kaku 11, 3rd Department Agent Address: Canon Co., Ltd., 3-30-2 Shimomaruko, Ota-ku, Tokyo 146 (Telephone: 758-2111) Name (898)
7) Patent Attorney Gi Marushima - “1”:1 ・,・ ” 5. Specifications subject to the supplementary IE; 1) and Drawing 6, contents of the supplements (1) The entire text of the specification shall be corrected as shown in the attached sheet. ( 2) Complete all drawings as shown in the attached sheet.

Claims (1)

[Claims] In a camera in which a flash device is movable between a use position and a non-use position, a lens protection member is moved to a first position to protect the front surface of the photographic lens and a second position to retreat from the front surface of the photographic lens. A camera characterized in that the flash device is configured to be locked in a non-use position in conjunction with the movement of the flash device.