JPS6326814Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a shutter for a compact camera that performs exposure by kicking up a shutter blade by running a slide member.

Conventionally, in order to set the slide member, it was necessary for the slide member to climb over a portion of the shutter blade, but since the shutter blade is equipped with a mechanism to prevent exposure to light during shutter charge, the slide This will interfere with the setting of the parts. Therefore, the part of the slide member that kicks up the shutter blade is made of a flexible member, or the part that rotates and climbs over the shutter blade when charging the shutter, and is fixed when kicking up the shutter blade. It was necessary to provide the loose dragonfly mechanism with a separate member. However, these methods naturally have the disadvantage that the number of parts and assembly man-hours increase, and the price accordingly increases. There were also problems with miniaturization.

The purpose of the present invention is to configure this slide member with a single member so that shutter charge and exposure operations can be performed without providing a so-called registration mark mechanism 90 as shown in FIG. The aim is to provide a shutter for compact cameras.

Next, the present invention will be explained in detail based on examples.
FIG. 1 is an explanatory front view showing a conventional shutter mechanism. Figures 2 to 5 are front explanatory views showing the embodiment of the present invention. Figure 2 shows the state when the exposure operation is completed, and Figure 3 shows the state in the middle of the shutter charge operation. FIG. 4 shows the state when the shutter charge operation is completed, and FIG.
The figure shows the running state of the slide member. still,
In each figure, the same members are designated by the same symbols. In FIG. 1, 80 is a conventional slide member supported at two points. 90 is a so-called dragonfly mechanism provided on the slide member 80;
00 is a slide hole. Since the other members are the same as those in the embodiment of the present invention, they will be explained from FIG. 2 onwards.

In FIGS. 2 to 5, 10 is a substrate that supports each member. The substrate 10 has an opening 11 for exposure.
is provided and closed by a shutter blade 20. The shutter blade 20 has a claw portion 21
It has a lock part 23 and a protrusion 24 for hanging one end of the spring 22, and the pin 25 and the protrusion 24 prevent the shutter blade 20 from rotating clockwise due to the biasing force of the spring 22. There is. The other end of the spring 22 is hung on a pin 26. A slide member 30 is further supported by a pin 31 on the substrate 10 so as to be slidable in a long hole 32, and is rotatable within a range permitted by a slide hole 33.
A kick-up portion 34 for kicking up the shutter blade 20 is passed through the slide hole, and also serves to limit the rotation of the slide member 30 within the range of the slide hole. Further, the slide hole 33 is provided with a tapered portion 70 for preventing the shutter blade 20 kicked up when the slide member 30 moves to the right from returning and pushing up the slide member 30. There is. The slide member 30 is biased to the right by the upright portion 35 of the slide member 30 and the spring 36 applied to the upright portion 12 of the board, and at the same time is supported at one point, so that the clock uses the pin 31 as a fulcrum. A rotational force in the direction is applied, and the kick-up portion 34 locks.
Furthermore, a shutter charge member 4 is provided in the vertical portion 35.
0 is in contact. The shutter charge member 4
0 to the left, the slide member 30 also slides to the left, and the protrusion 3 of the slide member 30
7 and the locking portion 51 of the locking member 50 are engaged and locked. The locking member 50 is pivotally supported by a pin 52,
Also, the substrate 1 is biased clockwise by the spring 53.
It is locked by the protrusion 13 of 0. Note that the locking member 50 is provided at a position on the substrate where it can come into contact with the release member 60.

In the above configuration, after the exposure operation is completed, shutter charge is performed in conjunction with the film winding operation. FIG. 2 shows a state in which the exposure operation has been completed, and from this state the slide member 30 is pushed leftward by the shutter charge member 40. At this time, when the kick-up portion 34 comes into contact with the claw portion 21 of the shutter blade 20, the counterclockwise rotation of the shutter blade 20 is stopped by the pin 25, so that the entire slide member 30 rotates counterclockwise. It gets over the claw part 21 while rotating in the direction. FIG. 3 shows the state at this time. The slide member 30 is further pushed leftward and the protrusion 37
slides to push up the locking portion 51 of the locking member 50. Then, the projection 37 and the locking portion 51 are engaged and locked, while the shutter charge member 40 returns to the position shown in FIG. 2, completing the shutter charge. FIG. 4 shows the state at this time. When the locking by the locking member 50 is released by the release operation, the slide member 30 slides to the right, and at this time the kicking portion 34 kicks up the claw portion 21 of the shutter blade 20 to perform exposure. Although the slide member 30 slides along the lower side of the slide hole 33, the slide member 30 may be pushed up when the kicked-up shutter blade 20 returns. In such a case, the shutter blade 20 will partially close the opening 11, and proper exposure will not be achieved. However, if the tapered portion 70 is provided as in the present invention, by the time the shutter blade 20 returns and comes into contact with the slide member 30, the kick-up portion 34 has already reached the tapered portion 70, and the slide member 30 is in contact with the slide member 30. It is designed so that it cannot be pushed up by the blade 20. Therefore, proper exposure can be obtained by adjusting the traveling speed of the slide member 30 by a speed regulating mechanism (not shown) or by adjusting the aperture.

As explained above, according to the present invention, shutter charging and exposure release can be performed without providing a so-called registration mark mechanism on the slide member, and the cost is reduced without increasing the number of parts and assembly man-hours. You can get a shutter for a compact camera.

[Brief explanation of the drawing]

FIG. 1 is an explanatory front view showing a conventional shutter mechanism. Figures 2 to 5 are front explanatory views showing the embodiment of the present invention. Figure 2 shows the state when the exposure operation is completed, and Figure 3 shows the state in the middle of the shutter charge operation. 4 shows the state when the shutter charge operation is completed, and FIG. 5 shows the running state of the slide member. In each figure, the same members are designated by the same symbols. 10... Board, 20... Shutter blade, 21
...Claw part, 30...Slide member, 33...Slide hole, 34...Kick-up part, 40...Shutter charge member, 50...Locking member, 51...
Locking part, 60... Release member, 70... Taper part, 90... Dragonfly mechanism.

Claims (1)

[Scope of utility model registration request] A shutter blade that opens and closes the exposure aperture and is normally located at a position where the aperture is closed.
a slide member rotatably supported around the
a kick-up portion provided on the slide member and capable of coming into contact with the claw portion when passed through the slide hole; a locking member that locks the slide member after being shutter-charged; and a kick-up portion provided in the slide hole. During shutter charge, the slide member rotates around the pin 31 while the kick-up part passes over the claw part, and after moving further and being locked by the locking member, When the slide member travels due to the release operation, the kick-up portion contacts the claw portion to rotate the shutter blade and open the exposure aperture;
A compact camera shutter characterized in that when the kick-up part is pushed up by the shutter blade, the kick-up part comes into contact with the tapered part and is prevented from being pushed up.