JPS59171940A - Shutter release mechanism of camera - Google Patents

Abstract

PURPOSE:To make manual continuous photographing possible by operating a winding member while holding the state, where a release member is depressed by a holding member, to charge and disengage a shutter operating member. CONSTITUTION:When a holding plate 24 is turned left in the state where a release lever 19 is depressed, its bending arm part 24a is engaged with a projecting part 19a from above, and therefore, the release lever 19 is held in the depressed state, and as the result, the second detaining pawl 22 disengages always a shutter operating lever 10. Consequently, when winding and release operations of a winding lever 1 are repeated in this state, detention, charging, disengagement, and release for the shutter operating lever 10 are repeated successively, and thus, manual continuous photographing is possible.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shutter release mechanism for a camera.

In general cameras (for continuous shooting, a method is adopted in which the shutter release button is pressed while winding the camera using a motor drive, etc.); however, this method requires a motor drive, etc. There was a problem that the structure of D = strike height became complicated.

In view of the above-mentioned problems, the present invention has been provided with a first gear actuating member that is energized in conjunction with the winding operation of the winding member, and a first lever actuating member that releases the lock in conjunction with the return movement of the winding member. A locking member, a second locking member that unlocks the seventh action member in conjunction with the pressing down operation of the release member, and a holding member capable of holding the release member in a pressed down state, The camera shutter enables continuous manual shooting by energizing and releasing the shutter operating member by operating the winding member while the release member is held in a depressed state by a holding member. This is intended to provide a release mechanism, and this will be explained based on an embodiment shown below. Fig. 1 shows a state in which the winding lever is in the middle of returning, and ■ indicates a rotation shaft 2 (not shown). A winding lever 4 is fixed to the upper end of the winding spool (which is connected to the winding spool that is not connected via a ratchet mechanism) and is given right-handed rotation by a spring 3; 5 is the implanted disc.

Reference numeral 6 denotes a return lever which is pivotally attached to a horizontal base plate (not shown) and is given a right-handed rotation by a spring 7, and is rotated to the left in conjunction with the wind-up operation of the winding lever 10, that is, the left-handed rotation operation; 8 is pivotally attached to the horizontal base plate, and The return lever 6 is given a right-handed rotation by the spring 9 and is rotated to the left.
10 is a shutter actuating lever which returns to another horizontal board (not shown) and is pivoted coaxially with the lever 6. 11 is a shutter This is a spring that is stretched between the operating lever 10 and the return lever 6, and is pulled by the counterclockwise rotation of the return lever 6 to bias the shutter operating lever 10 in the counterclockwise direction. Reference numeral 12 denotes a mirror drive lever which is pivotally attached to a right vertical substrate (not shown), is given a right rotation property by a spring 13 when viewed from the right side in FIG. 1, and is rotated to the left by left rotation of the shutter operating lever 10; This is a flip-up mirror that is pivotally mounted on the mirror and can be rotated upward by turning the mirror drive lever 12 to the left. Reference numeral 15 denotes an intermediate lever which is pivotally connected to another horizontal board and is given a right-handed rotation by a spring 16, and is pushed by a pin 5 and rotated to the left when the disc 4 rotates to the right; 17 is another water board; and spring 1
8 is a first locking pawl which is given a left-turning habit and can lock the shutter actuating lever 10 turned rightward, and can also be turned rightward by turning the intermediate lever 15 leftward to release the locking. Reference numeral 19 denotes a release lever 12 which is attached to a front vertical board (not shown) by a pin-slot connection so as to be able to slide up and down, is given upward movement by a spring 20, and has a protrusion 19a on its side edge.
1 is pivotally mounted on the front vertical board and is a release lever 19.
The intermediate lever 22, which is rotated to the left when the intermediate lever 21 is lowered, is pivoted to the front vertical base plate and is given a left-handed rotation by a spring 23, and can stop the shutter actuating lever 10 that has rotated to the right, and can also be rotated to the right by the left rotation of the intermediate lever 21. This is a second locking pawl that releases the lock when pressed. Reference numeral 24 is pivotally attached to the front vertical board and has a bent arm 24a on its periphery, and is rotated in the direction of the arrow to engage the bent arm 24a with the protrusion 19a from above or below, thereby forming a shutter. This is a holding plate that holds the release lever 19 in a depressed state or in a state where it cannot be pushed down.

The shutter release mechanism according to the present invention is constructed as described above, and in the normal state (photographing end state), the shutter operating lever 10 is locked by the second locking pawl 22 as shown in FIG. Now, in this state, roll ``Nige Lever 1''
When the shutter actuating lever 1 is rotated to the left, the pin 15 separates from the intermediate lever 15 at the initial stage, and as a result, the intermediate lever 15 is rotated to the right, and the first locking pawl 17 is rotated to the left and the shutter actuating lever 1 is rotated.
Lock 0. Then, in the next step, the return lever 6 stores the springs 7 and 11, is turned to the left, and is locked by the lock pawl 8. Next, by stopping the winding operation of the winding lever 1, the winding lever 1 returns to its original position by the spring 3, that is, rotates to the right, and the second
As shown in the figure, the pin 5 rotates the intermediate lever 15 to the left, so the first locking pawl 17 rotates to the right to release the lock from the shutter operating lever 10. Next, the holding plate 24
While holding it in the position shown by the solid line in Figure 1, press the release lever.
19 is pressed down with a finger, the intermediate lever 21 is rotated to the left as shown in FIG. 2, and the second locking pawl 22 is rotated to the right to release the lock of the shutter operating lever 10, and as a result, the shutter is activated. member 10 is spring 1
1, the mirror drive lever I2 is rotated to the left and the flip-up mirror 14 is rotated upward.

Incidentally, although not shown in the drawings, the opening and closing operations of the seven-yield door are performed in conjunction with these mechanisms through a well-known mechanism. Thus, when the opening/closing operation of the shutter is completed, the lock pawl 8 is rotated to the left via a well-known interlocking mechanism (not shown) to release the lock from the return lever 6, so that the return lever 6 is returned to its original position by the spring 7 (fc). The spring 1 of the mirror 1 drive lever 12 is returned to the /Yanotar operating lever IO by loosening the spring 11.
The right turning force caused by 3 causes it to return to its original position.

When you release your finger from the release lever 19, the lever 19 returns to the raised position by the spring 20, and the second locking pawl 22 returns to its original position, causing the shutter actuating lever to
Lock 0.

Next, with the release lever 19 pressed down, hold the holding plate 2.
4 is rotated to the left, the bent arm portion 24a engages with the protrusion 19a from above as shown in FIG. The state is such that the shutter operating lever 10 is always released from the lock. Therefore, if the winding and returning operations of the winding lever 1 are repeated in this state, the shutter operating lever 10 will be locked, biased, and unlocked as described above.
Since the return is repeated sequentially, continuous manual shooting is possible.

Furthermore, when the holding plate 24 is rotated to the left with the release lever 19 in the raised position, the bent arm 24a engages with the protrusion 19a from below as shown by the chain line in FIG. It becomes impossible to push down. Therefore, even if the release button 1//<-1, 9 is pressed inadvertently, the shutter release will not be performed, which is very convenient.

As is clear from the above explanation, the holding plate 24 holds the camera.
Since it functions as a switching means for switching between a state of taking pictures and a state of being able to take continuous pictures, the position once switched by a click mechanism or the like cannot be moved inadvertently.

As mentioned above, the shutter release mechanism of the camera according to the present invention enables manual continuous shooting with a simple switching operation, so the structure of the camera does not become complicated and can be done at low cost. Has excellent advantages.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a state in which the winding lever of an embodiment of the shutter release mechanism of a camera according to the present invention is in the middle of returning, and FIG. 2 is a perspective view showing the release state of the above embodiment. 1... Winding lever, 2... Rotating shaft, 4...
・Disk, 5...Pin, 6...Return lever, 8
...Lock claw, IO...Shutter operating lever, L1...Spring, 12...Mirror drive lever, 14...Flip mirror, 15...Intermediate lever, 17...First locking claw, 19...Release lever 121...Intermediate lever~, 22...Second locking claw, 24...Retaining plate. 0 boat. Representative Yasushi Shinohara and 1 samurai LL style footwork

Claims (1)

[Claims] A shutter actuating member that is energized in conjunction with the winding operation of the winding member, a first locking member that releases the lock of the shutter actuating member in conjunction with the return movement of the winding member, and a first locking member that is activated in conjunction with the downward movement of the release member. A second locking member that interlocks to release the locking of the first operating member, and a holding member capable of holding the release member in a depressed state, the holding member holding the release member in the depressed state. A shutter release mechanism for a camera, wherein the shutter operating member is biased and unlocked by operating the winding member.