JPS6037549Y2 - Shutter release device in camera coupled with motor drive device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a shutter release device in a camera coupled to a motor drive device.

Many cameras that are connected to a motor drive device as an adapter are of a type that controls the shooting operation only when the motor drive device understands, and even when the motor drive device is connected, the camera is There are relatively few examples of cameras that take pictures by pressing the shutter button.

Of course, it would be ideal to perform the shooting operation in any case simply by pressing the shutter button, as it would unify the command chain when starting the shooting operation, but the camera It is not preferable to provide a large number of components that work with the motor drive device on the side because these components become completely unnecessary when the motor drive device is removed. In this case, having such an electrical system on the camera side is likely to cause problems such as failures in connection with the electrical system originally required for the camera, and therefore, conventional cameras of this type are There are few examples of this, and when using a motor drive device 1
At best, the camera functioned poorly and could only be used to take a single photo by pressing the shutter button.

In the present invention, the camera is only provided with a connection part that operatively connects the shutter button and the shutter release member, and the motor drive device is connected when the motor drive device is connected. By providing a release member that releases the action, a switch that listens to the motor drive circuit in conjunction with pressing the shutter button, and a drive device that operates in conjunction with this switch to drive the shutter release member, the motor By effectively utilizing the drive device's inherent single-shot and continuous-shooting mechanisms, we have minimized the number of mechanical equipment on the camera side, and unified the command system at the start of shooting operations to only press the shutter button.
It is an object of the present invention to provide a shutter release device in a camera coupled with a motor drive device.

Hereinafter, the present invention will be explained in detail with reference to an illustrated embodiment.

Inside the camera 1, which is partially shown in FIG. , one end of the first connecting member 3 is swingably connected by a shaft 4.

The center part of the first connecting member 3 is swingably connected to the lower end of the second connecting member 5 by a shaft 6, and the second connecting member 5 is connected vertically by an immovable support 7. It is slidably supported on.

An engaging pin 8 is installed at the upper end of the second connecting member 5, and a shutter is connected to the shutter opening/closing mechanism (not shown) by a well-known means. The release member 9 has its one end abutted by a counterclockwise rotational habit provided by suitable means.

An elongated hole 3a is bored in the other end of the first connecting member 3, and the connecting pin 10 that fits into this elongated hole 3a is connected to the driving member 1.
It is fixed to one end of 1.

The drive member 11 is swingably supported by a fixed shaft 12, and a pressed portion 11a is formed at the other end.

Further, a coil spring 13 is hung between the other end and the fixing pin 13a, and the drive member 11 is given the habit of rotating clockwise around the shaft 12 by the coil spring 13. , the end of the pressed portion 11a is brought into contact with the stopper 14.

The second shutter release rod 2 on the bottom wall 15 of the camera 1
Directly below the connecting member 5 and the pressed portion 11a of the driving member 11, a motor drive device 16 is installed.
connection holes 15a, 1 into which the upper ends of the switch member 17, interlock release member 18, and drive rod 19 fit, respectively.
5b and 15c are engraved.

The switch member 17 is fitted into a hole 20a made in the earthen wall 20 of the motor drive device 16, and is slidably supported by an immovable support body 21.

A flange 17a is provided in a portion of the switch member 17 between the upper wall 20 and the support 21, and a coil spring 22 is fitted in the portion between the flange 17a and the support 21. and the switch member 17 is
In Fig. 1, an upward transition habit is given.

Then, the switch member 17 has its flange 17a
The displacement range is regulated by contacting the upper wall 20 of the motor drive device 16.

The lower end of the switch member 17 faces a normally open switch 24 of the motor drive control circuit 23 .

The switch 24 has a movable contact piece 24a and a fixed contact piece 24b, and both contact pieces 24a and 24b are placed in an open state except when the shutter is released.

The interlock release member 18 is slidably fitted into a hole 20b bored in the upper wall 20 of the motor drive device 16, and a coil spring is disposed between the flange 18a formed at the lower part and the stationary member 23. 18b is interposed to give the disengagement member 18 an upwardly shifting habit in FIG.

The interlock release member 18 is operatively connected by a shaft 26 to one end of a connecting rod 25 that is swingably supported by a support shaft 25a, and the displacement range of the interlock release member 18 is as follows.
The connecting rod 25 is regulated by coming into contact with the stopper 27.

The drive rod 19 is slidably fitted into a hole 20c bored in the upper wall 20 of the motor drive device 16, and its lower end is swingably connected to the other end of the connecting rod 25 by a shaft 28. connected.

The lower end of the drive rod 19 is in contact with the upper end of an operating rod 29a of an electromagnet 29 that together with the drive rod 19 constitutes a drive device.

A motor 30 is connected to the motor drive control circuit 23, and an output gear 31 of the motor 30 meshes with a film winding gear 32.

The shaft 32a of this gear 32 is connected to the motor drive device 16.
The large diameter portion is rotatably fitted into the upper wall 20 of the
A film winding engagement shaft 33 is integrally formed on the upper part of this shaft 32a.

The device of the present invention is constructed as described above, and when the camera 1 is used alone, it operates as follows.

In other words, when the film winding plate and shutter button are pressed,
The shutter release rod 2 descends.

When the shutter release rod 2 descends, the first connecting member 3 moves clockwise around the connecting pin 10 because the driving member 11 is locked to the stopper 14, and lowers the second connecting member 5. let

When the second connecting member 5 descends, this connecting member 5 moves the shutter release member 9 with its engagement pin 8 from the solid line position shown in FIG. 1 to the shutter release position 9A shown in chain lines, thereby , the shutter opening/closing mechanism operates to take a picture.

Next, the operation of the present device when the motor drive device 16 is coupled to the camera 1 will be described.

When the motor drive device 16 is coupled to the camera 1,
Switch member 17, interlock release member 18, and drive rod 1
9 are holes 15a, 15b, and 9 in the bottom wall 15 of the camera 1, respectively, as indicated by arrows a, b, and c in FIG.
15c and protrudes into the camera 1 as shown in FIG. come into contact with

However, the upper end of the drive rod 19 is only located directly below the pressed portion 11a of the drive member 11 and does not come into contact with it.

At this time, the film winding engagement shaft 33 (see FIG. 1) is operatively connected to the film winding shaft (not shown) of the camera 1.

Further, the coil spring 18b pushing up the interlock release member 18 is set to have stronger elasticity than the coil spring 13 applied to the drive member 11.

When the shutter button is pressed in the state shown in Figure 2, the third
As shown in the figure, the shutter release rod 2 is lowered and the switch 24 is closed via the switch member 17.

When the shutter release rod 2 descends, the first connecting member 3 rotates clockwise around the shaft 6 because the second connecting member 5 is locked by the interlocking release member 18, and the connecting pin 10 The drive member 11 is rotated counterclockwise around the shaft 12 via the .

Such an operation occurs because the elasticity of the coil spring 18b is stronger than that of the coil spring 13, and due to this operation, the pressed portion 11a of the driving member 11 is moved as shown in FIG. It occupies a position close to the upper end of the drive rod 19.

When the shutter release rod 2 is lowered as described above and the switch 24 is closed via the switch member 17, the motor drive control circuit 23 (see FIG. 1) is activated.
Activate the electromagnet 29.

When the electromagnet 29 is activated, its operating rod 29a pushes the protruding waist drive rod 19 upward as shown in FIG.
At the same time, the connecting rod 25 is rotated clockwise around the shaft 25a.

The driving rod 19 pushes up the pressed portion 11a of the driving member 11 to rotate the driving member 11 clockwise around the shaft 12, and the connecting rod 25 lowers the interlock release member 18.

Therefore, the driving member 11 rotates the first connecting member 3 counterclockwise around the shaft 4 via the connecting pin 10, and
The connecting member 3 lowers the second connecting member 5 via the shaft 6.

At this point, the interlock release member 18 has already descended, so the second connection member 5 descends without any trouble and its engagement pin 8
The shutter release member 9 is moved to the shutter release position.

When the shutter release is completed and the shooting of the film frame is completed, the motor drive control circuit 23 drives the motor 30, and the motor 30 rotates the film winding engagement shaft 33 via both gears 31 and 32. and then wind the film.

If you keep the shutter button pressed (), continuous shooting will occur.

Another embodiment of the invention is shown in FIGS. 5-7.

In FIG. 5, inside the camera 34, a shutter release rod 35, which operates integrally with the shutter button, is supported by immovable supports 36, 37 so as to be slidable in the vertical direction.

One end of a first connecting member 38 is rotatably connected to the shutter release rod 35 by a shaft 39, and one end of a second connecting member 40 is rotatably connected to the other end by a shaft 41. freely connected.

One end of a shutter release member 42 is rotatably connected to the other end of the second connecting member 40 by a shaft 43 .

The shutter release member 42 is supported by an immovable support 44 so as to be slidable in the left-right direction, and its other end is connected to a shutter opening/closing mechanism (not shown) by well-known means.

The connecting shaft 41 of the first and second connecting members 38.40 is
It fits into an arc-shaped guide groove 45a bored on one side of the interlock release member 45 (see FIG. 6).

The interlock release member 45 has its upper part connected to a shaft 47 (see FIG. 6).
The coil spring 49, which is hooked between the arm 45b protruding from the right side of the arm 45b and the immovable pin 48, has the tendency to rotate clockwise around the shaft 47. given, the tip of the arm 45b,
It is brought into contact with a pressing portion 50a provided at the upper end of the drive member 50.

The drive member 50 is supported by an immovable support member 37.51 so as to be able to freely slide in the vertical direction, and is pressed by the arm portion 45b of the interlock release member 45 to bring its head 50a into contact with the support member 51. I'm letting you do it.

Connecting holes 52a52b into which the switch member 54 and drive rod 55 of the motor drive device 53 are fitted are formed in the bottom wall 52 of the camera 34 at portions corresponding to the shutter release rod 35 and the drive member 50, respectively. .

The switch member 54 is fitted to immovable supports 56 and 57 so as to be slidable in the vertical direction, and its upper end is inserted outwardly through a connection hole 58a bored in the earthen wall 58 of the motor drive device 53. It stands out.

A flange 54a is formed in a portion of the switch member 54 between both supports 56 and 57.
A coil spring 5 is provided between the support body 57 and the coil spring 4a.
7a is fitted.

The switch member 54 is given an upward shifting habit by this coil spring 57a, and the flange 5
4a is brought into contact with a support body 56.

The lower part of the switch member 54 has a movable contact piece 59a and a fixed contact piece 59b.

A normally open type motor drive control circuit switch 59 is provided.

The drive rod 55 is attached to an immovable support 56 so as to be slidable in the vertical direction, and its upper end protrudes outward through a hole 58b formed in the upper wall 58 of the motor trilife device 53. ing.

Between the lower end of this drive rod 55 and the immovable pin 60,
A coil spring 61 is applied to the drive rod 55, and the coil spring 61 gives the drive rod 55 a tendency to move downward, and a retaining pin 62 fixed at its lower end is brought into contact with one end of the connecting rod 63. ing.

The connecting rod 63 is rotatably supported by a shaft 64, and is given the habit of rotating clockwise around the shaft 64 by a coil spring 66 hung between one end thereof and an immovable pin 65. and abuts against the stopper 67, restricting its rotation range.

The other end of this connecting rod 63 is connected to the electromagnet 6 by a shaft 68.
It is rotatably connected to the operating rod 69a of No. 9.

When the camera 34 takes pictures only with this camera 34,
It works as follows.

When the shutter release bar 35 is lowered by pressing the shutter button, the first connecting member 38 is lowered, and the shaft 41 is moved to the interlock release member 45 in an inclined state as shown in FIG.
The shutter release member 42 is slid to the left through the second connecting member 40, and the shutter opening/closing mechanism is activated.

When the motor drive device 53 is coupled to the camera 34 in the directions indicated by arrows d and e in FIG.
0, and the drive member 50 pushes up the arm portion 45b of the interlock release member 45 with the head 50a, and moves the interlock release member 45 around the shaft 47 (see FIG. 6) as shown in FIG. It is rotated counterclockwise from this position to the position shown in FIG.

The arc-shaped guide groove 45a of the interlock release member 45 is set so that the center of the arc coincides with the axis of the shaft 43 when the interlock release member 45 occupies the position shown in FIG. Even if the button is pressed and the shutter release rod 35 is lowered, the lowering operation of the first connecting member 38 is
It stops until the shaft 41 is displaced along the guide groove 45a,
The second connecting member 40 only rotates around the shaft 43 and does not cause the shutter release member 42 to perform a release operation.

When the shutter release rod 35 is lowered and the switch member 54 is pressed down, the switch member 54 releases the switch 5.
9 is closed, the motor drive control circuit is activated, the electromagnet 69 is driven, and the operating rod 69a projects upward.

The actuating rod 69a rotates the connecting rod 63 counterclockwise around the shaft 64, thereby lowering the drive rod 55.

When the drive rod 55 descends, the drive member 50 and the interlock release member 45 follow this, and the interlock release member 45 moves to the position shown in FIG.

When the interlock release member 45 moves in this way, since the shaft 41 is located in the lower part of the guide groove 45a at that time, it rotates according to the interlock release member 45,
Then, the shutter release member 42 is pressed and moved to the left via the second connecting member 40, and the shutter is released.

In this case, if you keep the shutter button pressed
Continuous photographing is performed in the same way as in the previous embodiment.

As mentioned above, according to the device of the present invention, the camera is equipped with only a few components, and in particular, no electrical components are installed on the camera, and only the shutter button can be operated.
Since it is possible to take single shots and continuous shooting, the function of the camera alone is not hindered at all, and when combined with a motor drive device, operation is very easy, and extremely excellent effects can be obtained.

In addition to the electromagnet 29.69, the means for actuating the drive member 11.50 in the present device include, for example, the motor switch control lever 14 or the shutter release lever described in Japanese Utility Model Application Publication No. 51-13442.
15 etc. can be used.

[Brief explanation of drawings]

FIG. 1 is a partial side view of a shutter release device in a camera to which a motor drive device is coupled, showing an embodiment of the present invention, and FIGS. 2 to 4 show the device shown in FIG. Partial side views showing the operating conditions, respectively;
FIG. 5 is a partial side view of a shutter release device in a camera to which a motor drive device is coupled, showing another embodiment of the present invention; FIG. 6 is a perspective view showing an example of a decoupling member; FIG. 7 is a partial side view showing the operating condition of the device shown in FIG. 5. 1.34...Camera, 2,35...Shutter release bar that operates together with the shutter button, 3
゜5, 38.40...Connecting member, 9,42...
...Shutter release member, 11,50...
... Drive member, 18.45... Interlock release member,
16,53...Motor drive device, 19.
55・Block・Drive rod, 24.59...Motor drive control circuit switch.

Claims (1)

[Claims for Utility Model Registration] The camera is provided with a connecting member that operatively connects the shutter button and the shutter release member, and a motor drive device is provided with the camera, and the motor drive device is coupled to the camera. a release member for releasing the action of the connecting member to operatively connect the shutter button and the shutter release member; and a motor drive device is also provided, and the motor drive device is coupled to the camera. A camera to which a motor drive device is coupled, comprising a switch that closes a motor drive control circuit in conjunction with the shutter button, and a drive device that drives the shutter release member in conjunction with the switch. shutter release device.