JPS588493B2 - camera camera - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention has at least two driving members, and when charging one of them, the other is charged through the driving member, and the charging position of the one driving member is The present invention relates to an unlocking load reduction mechanism for a drive system in a camera that releases the locking of the other drive member when the locking is released by a release member.

When a camera has two drive members and one of them is charged to engage and lock one release member,
It is well known that the drive member charges the other drive member and locks them both in the charge position, and that both drive members are released from the charge position by operating the one release member. .

For example, one of the two drive members, the first drive member, is released to operate the shutter shutter and the aperture, and the other drive member, the second drive member, is operated to operate the cube socket of the flash device.

In order to easily perform connected flash photography, both drive members are charged together by a single winding operation, and both members are released one after another simply by operating the release member.

This aspect will be described with respect to the conventional example shown in FIG.
The first drive member 1 is biased to the right by the first drive spring 3, the second drive member 5 is biased to the right by the second drive spring 7, and both drive members 1, 5 are The member is capable of sliding with respect to the camera body in a direction biased by the driving springs 3 and 7, and during the sliding, the first driving member 1 may, for example, close the aperture to a preset aperture opening rather than open it. Afterwards, the shutter shutter is activated, and the second drive member 5 is for example used to activate a cube socket of a flash device.

To charge both drive members 1 and 5, for example, when the first drive member 1 is moved to the left against the first drive panel 3, the bent piece 1c formed at the left end of the first drive member 1 is , engages with the right end of the second drive member 5 and moves it to the left against the second drive panel 7 to charge, and the locking portion 1e formed on the right side of the first drive member 1 engages. By engaging with one end of the stop lever 2, the first driving member 1 is locked in its charging position, and the right end of the second driving member 5 is engaged with the bent piece 1c of the locked first driving member. When the locking lever 2 rotates counterclockwise and the locking portion 1e is unlocked, both drive members 1 and 5 are unlocked. .

However, according to the above configuration, the direction of the load of the second drive member 5 applied to the bending piece 1c, which is the locking member of the first drive member 1, is the same as the drive direction of the first drive member 1 by the first drive spring 3. Since they are in the same direction, the load on the second drive member 5 caused by the second drive spring 7 is directly added to the locking lever 2, making it extremely difficult to release the lock by rotating the locking lever 2. As a result, camera shake may occur during the release operation.

The present invention relates to an unlocking load reduction mechanism aimed at eliminating the above-mentioned conventional drawbacks.

2 and 3 each show the structure of an embodiment of the present invention, and FIG. 2 will be described in detail below. The first drive member 1 has a locking member in the same manner as described above. When the constituent release member 2 releases the lock at the charging position, the first drive spring 3 causes the vehicle to travel straight to the right.
Two long holes 1at1b are formed, and these long holes 1a and 1b
Pins 4 a and 4 b implanted in the camera body are fitted and engaged therein, and an engaging portion 1 e that can be engaged with and detached from the release member 2 is formed at the right end thereof, and an engagement portion 1 e that can be engaged with and detached from the release member 2 is formed at the right end of the pin 4 a and 4 b that are implanted in the camera body. A bent piece 1c is formed on the side.

The second driving member 5 has a long hole 5 a like the first driving member 1.
t5b is formed, and a pin 6at6 is fitted into this.
It is guided by b and is movable left and right, and is urged by a second drive spring 7 to run from left to right.

A locking lever 1 is attached to the shaft 8 implanted in the second drive member 5.
0 is rotatably supported by a shaft, and a weak spring 11 imparts a clockwise rotation habit, and the locking lever 10 engages with a stopper pin 13 implanted in the second drive member 5 to rotate clockwise. is prevented.

As shown in FIG. 4, the pin 12 installed in the camera body has an inclined surface 12a that is lower on the right side and higher on the left side, and the arm end 10a of the locking lever 10 is on the left side. When attempting to move further to the right, the two engage and the arm end 10a
When the arm moves from the right to the left with respect to the pin 12, the arm end 1
0a is configured to ride over the pin 12 along the inclined top surface 12a of the pin 12.

Therefore, when the arm end 10a is on the left side of the pin 12, the second
When the drive member 5 is moved to the right by the second drive spring 7,
The arm end 10a engages with the pin 12, and the locking lever 10 is rotated counterclockwise against its spring 11. At that time, the first drive member 1 is in the charging position and the locking portion is rotated. 1e
is engaged with the release member 2, the other arm end 10b of the locking lever 10 engages with the lower surface of the bent piece 1c of the first drive member 1, and the further counterclockwise movement of the locking lever 10 The locking lever 10 and the pin 1 are prevented from rotating in the direction and engage with each other.
2, the rightward drive of the second drive member 5 by the second drive spring 7 is stopped.

Moreover, at this time, the load exerted by the second drive spring 7 that tries to move the second drive member 5 to the right acts on the bending piece 1c in a direction different from the direction of movement of the first drive lever 1 and substantially perpendicular thereto. Therefore, the load of the second drive member 5 does not act on the release member 2 at all.

When the release member 2 is rotated counterclockwise and a release operation is performed in the charged state shown in FIG. 2, the first drive member 1 starts moving straight to the right and then locks. When the restraint by the bent surface 1c of the arm end 10b of the lever 10 is released, the second drive spring 7 rotates the locking lever 10 counterclockwise against the spring 11, and the arm end 10a and the pin 12 Since the second drive member 5 also starts moving straight to the right and is released.

In order to charge it again to the state shown in Figure 2,
When the first drive member 1 is moved to the left while the first drive spring 3 is loaded, the locking lever 10 is rotated clockwise by the spring 11 until it engages with the stopper pin 13, so that the bent piece 1c moves to the left on the arm end 10b, and the left end of the bent piece 1c abuts and engages with the right edge of the second drive member to store the second drive spring I and move it to the left.

After the locking portion 1e of the first drive member that moves to the left moves to the left side of the release member 2 and the two can be engaged, the arm end 10a of the locking lever 10 engages with the inclined surface 12a of the pin 12. However, since the inclined surface is inclined as shown in FIG. 4, the locking lever 10 is slightly bent forward in FIG. 2, and the arm end 10a slides on the inclined surface 12a. I'll get over it.

Therefore, by stopping the left movement of the first drive member 1, the arm end 10a of the locking lever 10 engages with the pin 12 and rotates counterclockwise, and the arm end 10b engages with the bending piece 1c. Therefore, the rightward movement of the second drive member 5 by the second drive spring T is stopped, and after that, the first drive member 1 is locked as its locking portion 1e engages with the release member 2.

Therefore, a gap is left between the right edge of the second drive member 5 and the left end of the bent piece 1c of the first drive member 1, and both drive members 1, 5
is locked, and the load by the second drive spring 7 is applied to the first drive spring 7.
Since the load and direction of the drive spring 3 are different, the load of the second drive spring 7 is applied to the locking portion 1e and the release member 2.
There is no effect between them.

3 and 5 show a second embodiment of the present invention, and a first embodiment of the present invention is shown in FIG.
In the embodiment, the locking lever 10 was pivotally supported by the second drive member 5, but it was pivotally supported by the shaft 9' of the camera body, and the arm end 10a' of the locking lever 10 was supported by the second drive member 5 by the spring 11'. 5', and a bent piece 5 on which an inclined surface 5d' is formed.
0' and the second driving member 5' in the charging position, and the engagement of the two causes the locking lever 10' to release the spring 1.
1', the other arm end 1
0b' can be engaged with the bent piece 10' of the first drive member 1' in the charging position, and the other configurations are the same as in the first example.

Also in the second embodiment configured in this manner, the load caused by the second drive spring is the same as the load caused by the first drive spring 3' to engage the locking portion 1e' and the release member 2' constituting the locking member. The directions are different.

FIG. 6 shows an application example of a camera equipped with a flash cube using the first embodiment of the present invention.

First, the drive member 1 has a rack 1 along its direction of movement.
f is formed and a slow governor meshes with the rack 1f.
20, its rightward movement is slowed down.

Reference numeral 21 denotes an aperture blade operating lever, which has a counterclockwise rotational habit due to a spring 22, and engages with an arm 1d protruding from the first drive member 1, so that the first drive member 1 is released from the charging position. When the aperture is opened and moved to the right, the aperture is narrowed down to a preset aperture value from its maximum opening prior to exposure, or to an aperture value automatically set according to the brightness of the subject by a known electrical control device.

After the aperture is controlled, in the rightward end stroke of the first drive member 1, its right end 1g rotates the shirt release lever 66 clockwise to release the electric shirt shutter.

As described above, the locking lever 10 of the second drive member 5 has one end 10a engaged with the pin 12, and the other end 10b engaged with the bent piece 1c of the first drive member 1, and is engaged in the charge position described above. The fork portion 5d is engaged with and connected to an activation lever 23 which is biased counterclockwise by a strong spring 23 replacing the second drive spring 7, thereby imparting rightward movement. The pin 5e is connected to a rotary operating arm 26 that is rotatably pivoted around a shaft 25, and the rotary operating arm 26 is integrally connected to a feed clutch claw body 27, and is adapted to the reciprocating left and right movement of the second drive member. Adjustable feed reclutch pawl body 2
Rotate 7 one turn.

The feed reclutch pawl body 27 has four feed pawls 27a,
The driven side clutch pawl body 46, which is movable in the axial direction of the shaft 25 by a spring 47, is rotatably supported on the shaft 25, and is only moved when the feed pawl 27a rotates counterclockwise. It has four receiving claws 46a that can be engaged with the upper part, a groove part 46b is formed in the upper part, and a square plate 46 is formed on the outer periphery.
c is integrally formed, and its rotational position is regulated by a plate spring 46d that engages with the plate spring 46d.

Next, talking about the release mechanism, there is a shaft 29 on the camera body.
The first release lever 30 is supported by a spring 31.
It has a counterclockwise rotation habit, and the switch 34 is always on.
is open to the public.

The switch 34 constitutes a power switch for a brightness detection electromagnet 35 which is switched between a power sleep pressure check circuit and a brightness detection circuit by a changeover switch 42.

The release rod 33, which has the habit of constantly engaging with the tip of the first release lever 30, has a protrusion 33a for switching the changeover switch 42, and the brightness detection electromagnet 3.
Another shirt release electromagnet 43 connected to the power supply No. 5 is fixed.

A second release lever 44, which fixes an armature 44a that is attracted to this electromagnet 43 for shirt release, is pivoted by a spring 45 and given a clockwise rotational habit, and is attracted by the excitation of the electromagnet 43 for shirt release. When the electromagnet descends and rotates counterclockwise against the above-mentioned behavior, the arm end 44b engages with the release member 2 and releases the first drive member 1.

Armature 36a attracted to brightness detection electromagnet 35
The suction lever 36 is provided with a counterclockwise rotational habit by a spring 39 so as to retract the armature 36a from the brightness detection electromagnet 35, and a pin 3 is attached to its first arm.
6b, the second arm has a bent piece 36c, and the third arm 3
6d is removable from the locking piece 24a of the activation lever 24 described above.

The release blocking member 40, which is given the habit of engaging with the bending piece 36c by a spring 41 and is slidable left and right, has a blocking piece 40a protruding from the opening 65 of the camera body.

A bent portion 32 is formed in one arm of a driven lever 32 which is supported by a shaft 29 and has a counterclockwise rotational behavior by a spring 37.
b engages with pin 36b, and due to its behavior spring 39
The suction lever 36 is rotated clockwise against the rotational force, and its armature 36a is brought into contact with the brightness detection electromagnet 35, and the other arm is engageable with the protrusion 30a of the first release lever 30, and The protrusion 32a formed on the arm is formed so that it can fit into the opening 65 when the driven lever 32 is rotated clockwise.

Therefore, if the power battery is depleted below a predetermined voltage, both electromagnets 43 and 35 will not operate, and the first release lever will
When the driven lever 32 is slightly rotated clockwise by the lever 30, the suction lever 36 is rotated counterclockwise, and the release blocking member 40 is moved to the left by the spring 41, and the blocking piece 40a is moved to the left by the spring 41.
closes the opening 65 and prevents the protrusion 32a from descending.
Further rotation of the driven lever 32 is prevented, and the release is pressed R.

The reason why the release lock is operated using the brightness detection electromagnet 35 is that compared to the shirt release electromagnet 43, the placement of the brightness detection electromagnet 35 can be freely selected within the camera. It is from.

Furthermore, if the voltage of the power supply battery is sufficient, both electromagnets 35 .
43 are both excited, and before the protrusion 33a operates the switch 42, the tip of the protrusion 32a fits into the opening 65, after which the switch 42 is operated, and the electromagnet 35 detects the brightness from the power supply voltage check circuit. The electromagnet 35 is excited or demagnetized depending on the level of brightness of the subject. However, even if the electromagnet 35 is demagnetized at this time, the release lock does not operate as described above.

When the subject brightness is high, the suction lever 36 maintains the clockwise rotating position where it is suctioned, and its third arm 36d remains engaged with the locking piece 24a of the activation lever 24, and the first drive member 1 Even after the rightward movement releases the locking by the locking lever 10 and further releases the restraint by a restraining lever 45, which will be described later, activation of the second drive member 5 is prevented.

On the other hand, when the subject brightness is low and flash photography is required,
After the tip of the protrusion 32a is inserted into the opening 65, the changeover switch 42 is switched from the terminal 42a to the terminal 42b by the protrusion 33a, a brightness detection circuit is connected to the electromagnet 35, and its output excites the electromagnet 35. Therefore, the suction lever 36 is rotated counterclockwise by its spring 39, and the third arm 36d is retracted from the locking piece 24a of the activation lever 24.

On the other hand, the electromagnet 43 descends together with the release rod 33 descending, causing the second release lever 44 to rotate counterclockwise against its spring 45, so that its arm end 44b is connected to the release member 2.
The first drive member 1 is engaged with and rotated clockwise to release the locking of the first drive member 1 at the charging position by the release member 2, and the first drive member 1 is moved to the right to operate the aperture blade operating lever 21. After at least controlling the aperture, press the shirt crease lever 6.
Operate 6.

As the first driving member 1 moves to the right, the locking lever 10 is released from the bent piece 1c, and the strong spring 23 of the activation lever 24 causes the second driving member 5 to move slightly to the right, and the restraining lever 45 is released. is suppressed by

This restraining lever 45 is for timing the activation of the first driving member 1 and the second driving member 5, and is for timing the activation of the first driving member 1 and the second driving member 5.
c, the restraint lever 45 engages with this and rotates counterclockwise, thereby releasing the restraint, and the second drive lever 5 starts to move to the right, and the feed clutch pawl is activated via the rotary operating arm 26. Rotate the body 27 one turn clockwise and turn the feed claw 27
Move c by one tooth.

Next, the flash device, its operating device, and detection device will be described. The flash device 48 is equipped with four flash bulbs 48a that emit light upon impact, and is arranged in a so-called magic cube (Kodak's When the flash device 48 is attached to the cube socket 28 disposed in the camera body, it is loosely fitted in the lower part of the cube socket 28 and is inserted into the four vertical grooves 28a on the inner circumference of the cube socket 28. An interlocking member 49 into which a detection protrusion 49a for detecting the presence or absence of a flash cube is inserted is disposed in the flash cube socket 28.
When installed, the interlocking member 49 is pushed downward against the compression spring 50.

The lever 51 is equipped with a pin 51a that engages with the upper surface of the flange 49b of the interlocking member 49 by the above-mentioned pushing motion, and the lever 51 has a compression spring 50.
The lever 53 is released from its clockwise rotational habit and is allowed to operate the lever 53 which engages the pin 5lb at its tip.

Therefore, the levers 53 and 54 can be rotated counterclockwise, and the operating lever 55, which is pivoted on the lever 54, is raised by the spring 56, and its upper end 55a is connected to the flash device 4.
It abuts and engages with the striker built in 8 and stops.

On the other hand, when the lever 54 is rotated counterclockwise, its tip 5
Reference numeral 4a denotes an opening 5 which faces within the clockwise rotation locus of a second activation lever 57, which will be described later, and which moves the display frame 58 to the left with its pin 54b, leading to a part of the finder (not shown).
9, a filter 6 is installed in place of the light shielding part 58a of the same display frame 58.
0 facing each other, thereby informing the photographer in the viewfinder that the flash device 48 is attached to the cube socket and that preparations for emitting light have been completed.

Note that 62 is an illumination lamp, but external light may be used instead.

Even if the flash device 48 is attached to the cube socket 28, if it has already been used, the flash lamp needs to be replaced, and this needs to be notified.

Therefore, the operating device will be described below.

That is, when the subject brightness is lower than a predetermined value, the electromagnet 35 is not excited by the output of the brightness detection circuit as described above, and the rotation of the suction lever 36 is released. The third arm 36d is retracted from the locking piece 24a of the activation lever 24, and the activation lever 24 is
When the restraint by the restraint lever 45 is released by the bending piece 1c, the strong spring 23 rotates counterclockwise, causing the second drive member 5 to move to the right, and the protrusion 24c thereof.
is engaged with the lever 63 by its bent piece 63a, and the lever 63
is driven clockwise, and the bent piece 63b of the lever 63 is
The second actuating lever 57 is engaged with and rotated clockwise, and the second actuating lever 57 further rotates the lever 54, whose tip 54a faces within its rotation locus, counterclockwise, and the actuating lever 55 is urged upward, and its upper end 55a releases a striker (not shown) of the flash device 48, and the flash bulb 48a
lights up and emits light.

By rotating the lever 54 in the counterclockwise direction, the display frame 58 is further slid to the left, and the filter 61 is inserted into the opening 5.
9 to indicate that the flash bulb 48a has been lit.

Charging of both drive members 1 and 5 is performed in the same manner as shown in FIG. 2, and as the first drive member 1 is charged, the second drive member 5 is moved to the left to the charge position using the tip of its bent piece 1c. , the feed clutch pawl plate 27 is rotated one rotation counterclockwise via the rotary operating arm 26, and at this time, the feed pawl 27a engages with the receiving pawl 46a of the driven side clutch pawl body 46, and rotates the feed clutch pawl plate 27 counterclockwise. Rotate once in the direction.

The groove hole 46b on the upper surface of the driven side clutch pawl body 46 has a
The protrusions 28b of the cube socket 28 are fitted into each other, and the two are firmly connected by the push-in pin 64 against the compression spring 50, so that one rotation of the driven clutch pawl 46 in the counterclockwise direction The cube socket 28 also rotates once in the same direction, and the flash bulb 48a is again faced to the subject in preparation for the next flash photography, and is locked again in the charged state shown in FIG. 4. It is something.

The above is an application example of the present invention, but the first and second driving members of the present invention can also be applied to a shirt starter device having a leading and trailing member.

The unlocking load reduction mechanism of the present invention includes a first locking member that locks the first driving member in the charging position against the urging of the first driving urging member, and a movement of the first driving member. The second locking member locks the second driving member moving along the direction in the charging position against the urging of the second driving urging member, and the second locking member locks the second driving member in the charging position. The structure is such that the second drive member is held in the locking position by coming into contact with the first drive member that is locked in the direction substantially perpendicular to the direction of movement of the first drive member. Since the first driving member does not receive the urging force of the second urging member along the moving direction, no load is applied to the first locking member for locking the second driving member.

Therefore, it is possible to easily release the first locking member.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an example of a conventional lock release mechanism having two drive members, FIG. 2 is a side view of one embodiment of the present invention, and FIG. 3 is a side view of another embodiment of the present invention. FIG. 4 is an enlarged top view of the locking portion of the second drive member of the embodiment shown in FIG. 2, and FIG. 5 is an enlarged top view of the embodiment shown in FIG. 3. It is. FIG. 6 is a perspective view of an application example in which the embodiment shown in FIGS. 2 and 4 of the present invention is applied to a camera having a flash cube. In the figure, 1, 1'...first driving member, 2,
2'...First locking member, 3,3'...
First biasing member, 5, 5'... Second driving member, 7
．． 7'...Second biasing member, 10...Second locking member on the second driving member, 10'...Second locking member on the fixed shaft , 10a, 10'a... one arm, 10b, 10'b... other arm, 12
...Fixed member, 9'...Fixed shaft.

Claims (1)

[Claims] 1. A first device supported to move along a predetermined movement direction.
a driving member; a first urging member that drives the first driving member; and a first locking member that locks the first driving member in the charging position against the urging of the first urging member. , a second driving member supported to move in the same direction as the moving direction and moved to the charging position as the first driving member moves to the charging position; and for driving the second driving member once. a second biasing member; and a second locking member that locks the second drive member in the charging position against the bias of the second biasing member in the locking position, The second locking member has two arms and is rotatably supported on a shaft on the second drive member or a fixed shaft independent from the second drive member, and in the locking position, the second drive engagement of one arm of a second locking member on the member with a fixing member independent of the second drive member; or engagement of one arm of a second locking member on the fixed shaft with the second drive member; Due to the engagement, the other arm of the second locking member receives the biasing force of the second biasing member via the second drive member that is in the charge position, and the other arm of the second locking member is applied to the first drive member that is in the charge position. arranged so as to be in contact with each other from a direction substantially perpendicular to the direction of movement, and arranged so that when the first driving member moves from the charging position, the contact between the other arm and the first driving member is released. An unlocking load reduction mechanism for a camera, characterized in that: