JPS6042926B2 - Camera release mechanism - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a camera release mechanism, particularly a camera release mechanism that can be equipped with a winder, and which enables single-shot and continuous shooting depending on how the release button is pressed. Regarding the mechanism.

[Conventional technology]

In normal cameras, if you inadvertently press the release button before or during film winding, the shutter will operate with the film not being advanced or in the middle of it, resulting in overlapping shooting screens. A double safety device is built in that prevents winding while the release button is pressed, and also prevents the release button from being pressed during winding.

[Problems to be solved by the invention] However, when a winder device is attached to the camera to enable continuous shooting, the above-mentioned safety device is compromised.
If the release button on the camera body side is held down, the winding operation cannot be performed, so in most cases, the release operation is performed using a separate release button provided on the winder side, which deteriorates operability and reduces the structure. It also had the problem of being complicated and large.

In addition, in order to maintain operability and allow continuous shooting using the release button on the camera body even when the winder is attached, an electromagnetic release device was adopted instead of a mechanical safety device to solve the above problem. However, they were expensive and consumed a lot of power.

[Means for solving problems]

The camera release mechanism according to the present invention solves the above-mentioned problems in a camera that can be attached to a winder, and includes a winding interlocking member that returns to the normal position after winding is completed, and an actuating member such as a shutter when winding is completed. The activation member that is locked in the activated state is differentially connected to the release member via the swinging member, and the winding interlocking member that has returned to the home position and the release member that is in the release button pressing position are respectively connected to the release member. The fulcrum of the swinging member is configured, and only when one of the swinging members is in the fulcrum position, the other swinging member is rotated to drive the activation member, and the actuation member is activated. It is designed so that it can be operated.

[Operation] When the hoisting interlocking member is not in the above-mentioned position,
Even if the release member is activated, the activation member remains inactive, making the conventional safety device unnecessary.If the release member of the camera body is continued to be pressed while the winder is attached, the winding interlocking member will be activated. Each time the camera returns to its position, the activation member is driven and continuous photography can be performed.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 schematically shows a basic embodiment of the present invention. Reference numeral 1 denotes a winding interlocking member, which returns to the normal position indicated by the solid line when winding is completed, and is used during shutter operation and after the start of winding. Evacuate to the position indicated by the imaginary line.

Reference numeral 2 denotes a swinging member, whose intermediate portion is pivotally connected to the lower end of the release member 3 via a shaft 2a, and whose one end bent portion 2b engages with the winding interlocking member 1.

Reference numeral 4 denotes a starting member, which is pivotally connected to the fixed part by a shaft 4a, has a right-handed rotation behavior by a spring 4b, and has a pin 4c set at one end, which engages with the end 2c of the swinging member 2. The other end 4d locks the actuating member 5 such as a shutter in the energized state in the winding completed state, and releases the lock to operate the mirror or the shutter.

Here, the operating member such as a shutter means a mirror operating member or the like in the case of a single-lens reflex camera.

Next, the operation of this embodiment will be explained.

Now, when the camera body is in the completed winding state and the winding interlocking member 1 is in the fixed position shown by the solid line, when the release member 3 is pressed in the direction of the arrow, the winding interlocking member 1 will act as a fulcrum and swing. The member 2 rotates to the right, and the one end 2c pushes the pin 4c to rotate the starting member 4 to the left against the spring 4b, so that the actuating member 5 is released from the lock by the starting member 4 and starts counterclockwise.

On the other hand, if the hoisting interlocking member 7 is retracted to the position shown by the imaginary line after the start of hoisting, even if the release member 3 is pressed in the direction of the arrow, the swinging member 2 uses the pin 4c as a fulcrum. Since the actuating member 4 is not rotated to the left but only rotates to the left, the actuating member 5 is also maintained in the charged state. Therefore, when a winder is attached to the camera, if the release member 3 is kept pressed, the swinging member 2 rotates around the shaft 2a each time the winding is completed and the winding interlocking member 1 returns to its home position. Turn right,
As a result, the actuating member 4 is driven to rotate to the left, the actuating member 5 is actuated to perform continuous photography, and when the pressure on the release member 3 is released, the actuating member 4 is no longer driven even after winding is completed.

Further, by pressing the release member 3 for a short time and releasing this pressing before winding is completed, it is possible to take a single picture.

In the above embodiment, the release member 3 was applied to the middle part of the swinging member 2, but as shown in FIG. It may be made to abut in the middle part. Next, FIG. 3 shows another embodiment of the present invention that utilizes three-dimensional movement of a swinging member.

In the figure, reference numeral 11 denotes a hoisting interlocking pin implanted in a disc 14, which is a hoisting pin that is prevented from returning during hoisting and can be returned by a return spring 12 only when hoisting is completed. lever shaft 1
It is fixed at 3. 15 is a swinging lever, and a fixed shaft 16
It is loosely attached to the E-ring 17 to prevent it from coming off, and the fixed shaft 16
a first arm 15a which is a lever that can rotate in a plane orthogonal to the rotational plane, and can perform three-dimensional movement in a plane obliquely to the rotational plane, and can be engaged with and detached from the hoisting interlocking pin 11; This first
A second arm 15b is bent perpendicularly to the arm 15a and has an inclined surface 15c at the tip, and a second arm 15b is bent at right angles in the opposite direction to the first arm 15a from near the tip of the second arm 15b, and has a bifurcation at the tip. and a third arm 15d having a portion 15e.

Reference numeral 18 denotes a release pin, which is implanted in the release lever 19 that is slidably mounted when the release button is pressed, and engages with the inclined surface 15c of the swing lever 15.

Reference numeral 20 denotes a starting lever, which is pivotally mounted on the bottom of a mirror box of a single-lens reflex camera with a shaft 21, has a right-handed rotation by a spring 22, and has a pin 23 implanted in the bending tip of the swinging lever 15. Loosely fit into the forked portion 15e.

Reference numeral 24 denotes an actuating member that is locked to one end 20a of the actuating lever 20 in an energized state.

Here, in the winding completed state shown in FIG.
9 in the direction of arrow A, the release pin 18 slides on the inclined surface 15c of the swinging lever 15, so that the swinging lever 15 is moved between the fixed shaft 16 on the first arm 15a and the hoisting interlocking pin 11. The third arm 15d is tilted in the direction of arrow B, obliquely intersecting a plane perpendicular to the fixed shaft 16, and the third arm 15d is also displaced in the direction of arrow C, using the line connecting the contact point with the fixed shaft 16 as a support axis. Along with this, the activation lever 20 also rotates to the left against the spring 22, the activation plate 24 is released from its lock and starts counterclockwise, and the mirror and shutter are activated.

On the other hand, even if the release lever 19 is pressed in the state before winding up, the rocking lever 15 swings and the starting lever 20 turns to the left, the actuating member 24 remains in the state before storing energy. Since it is in a state, it will not operate. In addition, if the winding is performed while the release lever 19 is pressed, or if the release lever 19 is pressed during winding, the winding interlocking pin 11 is moved to the first arm 1 of the swing lever.
Since the tip of the second arm 15a is retracted or has already been retracted or retracted, even if the tip 15c of the second arm 15b is pushed down in the direction of arrow B, the swing lever 15 does not move the shaft 16 and the tip 15c. With the connecting line as the axis, the starting lever 20 returns to the arrow D.
Or, since the starting lever 20 has already returned, it rotates about the line connecting the shaft 16 and the pin 23, and in either case, the actuating member 24 before or in the middle of storing energy is not activated. Moreover, it does not prevent the activation lever 20 from being locked after the energy storage is completed.

Furthermore, when a winder is attached to the camera, when the release lever 19 is kept pressed, the swinging member 15 moves to the fixed shaft 1.
6 and the release pin 18,
Every time the winding is completed and the winding interlocking pin 11 returns to its home position, the actuating member 24 rotates to the right with respect to the line connecting the fixed shaft 16 and the release pin 18 and rotates the starting lever 20 to the left. The camera is operated to perform continuous photography, and the operation is stopped by releasing the pressure on the release lever 19.

Furthermore, by pressing the release lever 19 for a short time, it is possible to take a single picture in the same way as in the embodiment described above.

Note that the fixed shaft 16 may be provided on the second arm 15b side as long as it is near the intersection of the first arm 15a and the second arm 15b, or it may be supported by a pivot instead of the shaft. good.

Further, in the embodiment described above, the swing lever 15 has an inclined surface 15c, but conversely, the release lever 19 may have an inclined surface and a pin may be provided on the swing lever side.

Further, although the swing lever is formed by bending a plate, the structure is not limited to this. [Effects of the Invention] As described above, according to the present invention, in a camera that can be equipped with a winder, the two safety devices that have been required in conventional mechanical release mechanisms, namely, that winding is not possible when the release member is pressed, are eliminated. Since there is no need for a device that disables the release operation during winding, the mechanism is significantly simplified, and when the winder is installed, single-shot and continuous shooting can be selected by pressing the release member. Therefore, there is no need for a complicated switching device as seen in conventional winder devices, and there is no need to use an electromagnetic lace device that is expensive and consumes a large amount of power.
The effect is extremely large.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram schematically showing a basic embodiment of the present invention, Fig. 2 is an explanatory diagram of an embodiment in which a part of Fig. 1 is modified, and Fig. 3 is an explanatory diagram showing another embodiment of the invention. FIG.

Claims (1)

[Scope of Claims] 1. A winder-mountable camera that includes: a winding interlocking member that returns to a home position after winding is completed; an activation member that locks an actuating member such as a shutter in a charged state when winding is completed; a swinging member that engages with the starting member and the hoisting interlocking member; and a release member differentially connected to the hoisting interlocking member and the starting member via the swinging member. , the winding interlocking member that has returned to its normal position and the release member that is in the release button pressing position each constitute a fulcrum of the swinging member, and only when one of them is in a position that serves as the fulcrum,
A camera release mechanism, characterized in that the swinging member is rotated by the other hand to drive the actuating member, thereby activating the actuating member. 2. A hoisting interlocking member that returns to the normal position after hoisting is completed, a starting member that locks an actuating member such as a shutter in a stored state when hoisting is completed, and this starting member engages with the hoisting interlocking member. a release member differentially connected to the winding interlocking member and the activation member via the swinging member, the release mechanism being equipped with a winder; The movable member has a first arm whose distal end is engaged with and disengaged from the winding interlocking member, and a means that is substantially orthogonal to the first arm and whose distal end is rotated about the first arm by the release member. It consists of a second arm, and a third arm that extends from near the distal end of the second arm at a substantially right angle in a direction opposite to the first arm, and whose distal end engages with the activation member; The winding interlocking member is supported for three-dimensional movement in the vicinity of the intersection with the two arms, the winding interlocking member engages the first arm when returning to the home position, and the release member engages the second arm at the release button pressing position. and only when one of them is in the engaged position, the other pivots the swinging member about a line connecting the engagement point and the supported point. A release mechanism for a camera, wherein the third arm drives the actuating member to operate the actuating member.