JPS623937B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric self-timer that is used in a type of camera shutter that releases the shutter by electric means, and whose operation is controlled by an electric control circuit. This invention relates to an electric self-timer equipped with an on-demand shooting function that allows the user to arbitrarily release the shutter and take pictures at any time even when this is set.

With the conventional electric self-timer as described above, after setting the self-timer, if you suddenly find yourself unable to take pictures immediately, you can manually return the setting operation member to the state before setting. After doing so, I would press the release button. For this reason, there were operational disadvantages such as the shutter slippage being sometimes missed while the setting operation member was being returned to its pre-setting state.

In view of the drawbacks of the prior art as described above, the present invention has been developed by setting the self-timer once and operating the release operation member such as the release button.
If you want to take a picture immediately, you can press the release button again, and the self-timer that was set by this release operation will be canceled at that point, and at the same time the shutter will open and close and the picture will be taken. Therefore, to provide an electric self-timer equipped with an optional photographing function in which the operation of only releasing the setting is completely unnecessary in this case.

The present invention will be explained below with reference to illustrated embodiments.

In the drawing, 1 indicates pin 1a, pin 1b, 1
c, a release operating lever which has grooves 1d and 1e for pin-slot connection with the guide pins 2 and 3 and is given upward movement by a spring 4; 5 is an arm 5;
a, a cover 5b that engages with the release operating lever 1;
5c, it has grooves 5d, 5e and a part 5f that are pin-slot connected to the guide pins 2, 3, and is stretched between the release operating lever 1 and provided with a downward force by a spring 6; The release lever 7 is pivotally supported by a shaft 8, is given dextrorotation by a spring 9, and has arms 7a and 7b.
A release lock lever 10 is pivotally supported by a shaft 11, is given levorotation by a spring 12, and has a lock 10a that engages with the arm 5a of the release lever 5 described above, and an arm 7b of the release lock lever 7. A release start lever has an engaging arm 10b and is restricted from rotating to the left by a stopper pin 13, and 14 is a diagram that performs release delay time control, exposure control, exposure and other warnings, electromagnetic release, etc. by switching operation of a switch. A power switch (not shown) of the shutter control circuit engages and closes the cover 1b of the release operating lever 1. Reference numeral 15 designates a timer start switch for the shutter control circuit, which engages and opens part 5f of the release lever 5, thereby starting the shutter control circuit and first switching to the short-delay electromagnetic release mode or long-time release mode, which will be described later. Mechanical actuation is initiated after a predetermined period of time has elapsed depending on the setting of the delayed electromagnetic release mode. Reference numeral 16 refers to the shutter control circuit, which is used during normal shooting, and is used during short-delay electromagnetic release mode and self-timer shooting, in which the electromagnetic release is activated after zero or a certain amount of very short time has elapsed after the release operation. This is a switch that switches between a long delay electromagnetic release mode that operates the self-timer and then activates the electromagnetic release.
It is composed of a movable contact piece 16a, a shutter contact 16b, and a timer contact 16c. It should be noted that this movable contact piece 16a always has a tendency to leave the shutter contact 16b and come into contact with the timer contact 16c. 1
7 is pivotally supported by a shaft 18, is given dextrorotation by a spring 19, and has an arcuate part 17a, a step 17b, and an arm 17c; 20 is pivotally supported by a shaft 21; The timer lever 17 is given dextrorotation by the spring 22.
The part 17a has a sleeve 20a that engages with the step 17b, and a shutter opening/closing mechanism (not shown) releases the spring 2 when the shutter is closed.
A timer release lever 23 is rotated to the left against the shutter speed 2, and its dextrorotation is suppressed by the timer lever 17 in the shutter charge state.
a, ridge 23b that engages with ridge 5c of the release lever 5; grooves 23c, 23d that pin-slot connect with guide pins 24, 25; part 23e;
, and the timer operating lever 27 is given rightward movement by a spring 26;
3, an arm 27b that engages with the arm 1c of the release operating lever 1, and a movable contact piece 16a of the changeover switch 16.
a pin 27c that engages with the timer operating lever 2;
This switch lever has a groove 27d that pin-slots connects with the guide pin 28 set up in the center of the switch lever 3, and is capable of imparting dextral and levorotatory properties to the guide pin 28 by means of a spring 29.

The operation will be explained below.

The drawing shows a state in which the shutter is charged and the self-timer is not set.

In the illustrated state, the springs 4 and 6 are charged by pushing down the release operating lever 1. After the pin 1b closes the power switch 14 and undergoes a stroke in which various warning display devices provided as necessary are activated, the pin 1a
engages arm 7a, presses it to rotate release lock lever 7 to the left, and moves arm 7b to arm 1.
When released from 0b, the release start lever 10 is rotated to the left by the spring 12 and is restrained by the stopper pin 13.

The release lever 5 releases the restraint of the arm 5a by turning the release start lever 10 to the left and is lowered by the spring 6, and opens the timer start switch 15 in part 5f, thereby setting the short delay electromagnetic release mode. After a predetermined period of time has elapsed due to the operation of the shutter control circuit, the shutter release mechanism (not shown) is electrically unlocked, and exposure is started. At the end of the process, the timer release lever 20 is rotated to the left by a shutter opening/closing mechanism (not shown) at least to the extent that the lock 20a does not come into contact with the part 17a.

When you stop pressing down on the release control lever 1,
The release lever 5 also engages with the armature 5b and rises together, and when the shutter is then charged, the release start lever 10 is also rotated to the right, and is prevented from rotating to the left by the release lock lever 7, and the timer release lever 20 is also released from its restraint and rotates to the right, and its maze 20a is restrained by part 17a, returning to the state shown in the drawing.

The above is the release and charge operations during normal photographing.Next, the self-timer setting and release operations will be explained.

To set the self-timer, press timer lever 1.
7 to the left against the spring 19, and step 17
This is done by engaging the mare 20a with b.

By turning the timer lever 17 to the left and locking it in that position, the timer operating lever 23 is released from the locking of the arm 17c to the armature 23a, is moved to the right by the spring 26, and locks the armature 23b. 5c
and stop it. The switch lever 27 also integrally moves to the right, and the pin 27c retreats to release the restraint on the movable contact piece 16a, and the shutter contact 1
6b to the timer contact 16c. The position of the arm 27b at this time is outside the operating trajectory of the armature 1c.

In the above self-timer setting state,
When the release operating lever 1 is pushed down and the release lever 1c reaches a position where it interrupts the operating trajectory of the arm 27b, the release lever 5 is released from the lock and lowered as described above, and the timer start switch 15 is released. . Since the shutter control circuit has already been set to the long delay electromagnetic release mode by the changeover switch 16 as described above, when the timer start switch 15 is opened, the self-timer starts counting seconds.

When the release lever 5 descends as described above to open the timer start switch 15, the shank 5c descends with a margin below the lower surface of the shank 23b and is disengaged. As a result, the timer operating lever 23 is released from the restraint by the armature 5c, moves further to the right, and enters the operating locus of the armature 5c. Further, since the guide pin 28 of the switch lever 27 moves to the right together with the timer operating lever 23, the switch lever 27 attempts to follow this movement by the spring 29, but the arm 27b engages with the armature 1c and is prevented from moving to the right. Ru.

When the release operation lever 1 is released from its depression, it is raised together with the release lever 5 by the spring 4, but the shank 5c engages with the lower surface of the shank 23b and is prevented from rising. This rising distance corresponds to the margin between the cover 5c and the lower surface of the cover 23b that was created when the release lever 5 was lowered, and even when the release lever 5 returns to the upward position, the timer start switch 15 is not released. is maintained, and therefore the timer operation by the shutter control circuit is maintained.

The arm 27b of the switch lever 27 is 1c
The pin 27a is engaged with the part 23e, so it is not rotated to the left. However, when the armature 5c is restrained by the armature 23b, the armature 1c stops when it comes off the arm 27b, and the switch lever 27 is thereby released from its restraint and moves to the right, causing the arm 27b to actuate the armature 1c. Infiltrate within the trajectory.

Thereafter, when the exposure opening/closing operation of the shutter is performed as described above after the predetermined self-timer activation time has elapsed, the timer release lever 20 is
rotates to the left and disengages from step 17. As a result, the timer lever 17 rotates to the right, and the arm 17c
23a to move the timer operating lever 23 to the left against the spring 26.

By moving the timer operating lever 23 to the left,
c is disengaged from the cover 23b, and the release operating lever 1 and the release lever 5 return upward. In addition, the switch lever 27 moves to the left together with the timer operating lever 23, and the movable contact piece 1 is moved to the left by the pin 27c.
6a to separate it from the timer contact 16c and press it against the shutter contact 16b.

By performing the shutter charge as described above, the state shown in the figure is restored thereafter.

Next, we will explain the operations and operations to be performed when the self-timer is in operation, when you suddenly find yourself unable to take normal pictures, or when you want to quickly take normal pictures after setting the self-timer.

First, a case in which normal photographing is performed while the self-timer is operating will be described.

When the self-timer is in operation, that is, when the cover 5c is in contact with the lower surface of the cover 23b and is prevented from rising by the spring 4, by pressing down the release operation lever 1 again, the normal operation can be immediately resumed. Photography will take place. That is, in the above state, the arm 27b has entered the operating locus of the cover 1c, so when the release operation lever 1 is pushed down again, the arm 27b moves into the operating locus of the cover 1c.
The switch lever 27 is pushed by the guide pin 2
8 as a fulcrum, the movable contact piece 16a is pushed by the pin 27c, separated from the timer contact 16c, and moved to the shutter contact 16b.
to switch the shutter control circuit from the long delay electromagnetic release mode to the short delay electromagnetic release mode. As a result, the shutter control circuit is switched from counting seconds as a self-timer, which starts when the timer start switch 15 is opened, to counting seconds as a timer for normal shooting. Shutter exposure starts immediately.

While the self-timer is in progress, normal photography can be performed by simply pressing down on the release control lever 1 as described above.Next, when the self-timer has only been set, We will explain the operations and operations when you want to immediately take a normal photograph.

The operations and operations in the above case are basically the same as in the case where the self-timer operation is in progress as described above.

That is, in this case, the release operation lever 1
This is done by pressing down twice, and the first
Activation of the self-timer is started by pressing down the release operating lever 1, and normal photography is performed by once returning the self-timer and pressing it down again.

In the above embodiment, the switch lever 27 is a single member that performs linear operation and rotational operation, but instead of this, a parent member is pivotally mounted on the timer operating lever 23, and the parent member is A pawl lever may be pivotally mounted on the member, and the pawl lever of this two-member member engages with the operating lever 1, and the parent member operates the changeover switch 16.

Also, the timer release lever 20 is rotated to the right regardless of whether before or after the shutter is charged.
7, and the timer lever 17 can be set regardless of whether the shutter is charged before or after the shutter is charged.

Further, although the configuration in which the release operation lever 1 and the release lever 5 are made of different members is shown, this configuration is for timing the operation of the power switch 14 and the timer start switch 15, and the self-timer In relation to the operation, a single release member is used, and the lock 1c is the first lock,
There is no problem even if the maze 5c is formed into a single member as the second maze.

According to the present invention, after setting the self-timer as described above, normal photographing can be carried out regardless of whether or not the self-timer is in progress without performing a normal photographing operation, that is, pressing down the release operation lever 1. It is extremely easy to operate, and the effects can be achieved quickly.

[Brief explanation of the drawing]

The drawing is a front view of main parts showing an embodiment of the present invention. 1... Release operation lever, 5... Release lever, 7... Release lock lever, 10... Release start lever, 14... Power switch,
15... Timer start switch, 16... Changeover switch, 16a... Movable contact piece, 16b... Shutter contact, 16c... Timer contact, 17... Timer lever, 20... Timer release lever, 23...
Timer operation lever, 27... switch lever.

Claims (1)

[Claims] 1. After the power switch is closed by releasing the shutter, the delay time until the shutter blade opening/closing mechanism starts operating is changed by a timer circuit, thereby making it possible to switch between normal photography and self-timer photography. In a camera shutter with a shutter control circuit, the A1 position due to the displacement behavior and the A1 position that resists the displacement behavior
a release operating member arranged to be movable between the A2 position and an A3 position that resists the displacement habit further away from the A2 position, and in a state where the release operating member is between the A2 position and the A3 position; , a power switch that maintains the power supply state to the shutter control circuit mentioned above, a timer start switch that maintains the timer circuit in the activated state, a B1 position that resists the displacement behavior, and a position that resists the displacement behavior.
B2 position and B3 due to displacement habit farther than B2 position
When the release of the restraint at the B1 position is released by the self-timer setting operation, the shutter is displaced to the B2 position and is temporarily restrained by the release operation member located at the A1 position. and when the release operating member passes through the A2 position and is displaced to the A3 position, the timer operating member is moved from the B2 position to the B3 position and becomes in a state where the release operating member can be restrained at the A2 position. , movably supported on the timer operating member;
When the timer actuating member is displaced to the B3 position, it becomes possible to move within the movement trajectory of the release operating member from the A2 position to the A3 position, and the second displacement of the release operating member from the A2 position to the A3 position occurs. a switch actuating member that is oscillated by the timer circuit;
When the timer is in the B2 position, the short-time mode is set via the switch operating member, and when the timer operating member moves toward the B2 position, the timer is switched to the long-term mode, and the short-time mode is set again by the rocking of the switch operating member. It consists of a changeover switch for switching to and setting time mode; Equipped with an electric self-timer.