JP2005345615A - Camera with built-in stroboscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem wherein it is difficult to make the dimension of a camera in a height direction small because of the restriction of the arrangement of a solenoid, which becomes motive power and a locking means is positionally arranged only near the center of rotation of the stroboscopic unit in providing the automatic pop-up constitution of a stroboscopic device, so that the gap between a stroboscopic unit and an external part is uneven in the vicinity of the edge of the stroboscope unit, and a gap-adjusting mechanism must be added separately. <P>SOLUTION: The locking member for locking a light-emitting unit at a housing position is arranged more upward than a lens mount and more forward in the optical axis direction than a pentagonal part as seen from the front of the camera, and the solenoid for driving the locking member is arranged so that its center shaft is farther backward in the optical axis direction than a mount part, arranged so that a lens can be attached/detached in the vertical directions of the camera, and a rotatable driving force transmitting member is arranged more backward in the optical axis direction than the mounting part, and its rotary shaft is arranged in the optical axis direction, and its one end is engaged with the output shaft of the solenoid and the other end is engaged with the locking member. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a camera having a built-in strobe that rotates about a predetermined axis in a use state and a non-use state, and particularly in a storage standby position against a biasing force of a biasing member biasing toward a light emitting position. A locking member having a claw portion movable between a locking state to be locked and a state in which the locking is released; a solenoid that drives the locking member; and a driving force from the solenoid to the locking member. The present invention relates to a camera with a built-in strobe provided with a driving force transmitting member for transmitting.

  Conventionally, as a pop-up mechanism of this type of camera with built-in strobe, as shown in Patent Document 1, a solenoid is driven to release the locking means against the force of a tension spring.

As another configuration, as shown in Patent Document 2, using a motor as a drive source, the driving force from the motor is transmitted to the cam gear train via the planetary mechanism, the toggle spring is inverted, and the strobe is popped up. The configuration is known.
Japanese Patent Laid-Open No. 10-039374 Japanese Patent Application Laid-Open No. 09-043685

  However, in the case of Patent Document 1, it is difficult to reduce the size in the height direction of the camera due to restrictions on the arrangement of the solenoid, or the position of the locking member can be arranged only near the rotation center of the strobe unit. Near the tip of the strobe unit, the gap with the exterior parts is uniform and a gap adjustment mechanism must be added separately. For this reason, the adjustment process in a production factory generate | occur | produced, the defect rate rose, and there existed a fault that cost increased.

  In addition, it is difficult to dispose a large solenoid, and it is necessary to set so as to be able to operate even with a suction force of a small solenoid by weakening the urging force. For this reason, there is a drawback that the locking is easy to release and the strobe pops up carelessly.

  In addition, since there is only one locking claw of the locking means, there is a disadvantage that it is easily damaged when a load is applied.

  Accordingly, an object of the first invention according to the present application is to change the arrangement of the solenoid from the upper part of the camera to the rear of the mount, thereby reducing the size in the height direction of the camera. An object of the present invention is to provide a camera with a built-in strobe with improved reliability that does not pop up.

  The object of the second invention according to the present application is to dispose a strobe locking component having a plurality of locking claws on the front surface of the camera and the top of the mount, so that it is necessary to use a dedicated component for adjusting the clearance at the tip of the strobe unit. Since there is no cost reduction, the gap can be made uniform and small. It is another object of the present invention to provide a camera with a built-in strobe that can prevent the locking claws from being damaged.

A first configuration for realizing the object of the invention according to the present application is a camera with a built-in strobe including a light-emitting unit rotatably supported between a storage position and a light-emitting position.
A drive member for locking the light emitting unit at the storage position is disposed above the mount for attaching and detaching the lens when viewed from the front of the camera and ahead of the penta part in the optical axis direction, and drives the lock member The solenoid of the center axis is arranged in the vertical direction of the camera and rearward in the optical axis direction from the mount part,
A rotatable driving force transmitting member is rearward in the optical axis direction from the mount portion, the rotating shaft is disposed in the optical axis direction, one end is engaged with the output shaft of the solenoid, and the other end is engaged with the locking member. It is characterized by being engaged.

  A second configuration for realizing the object of the invention according to the present application is such that a locking portion between the driving force transmission member and the locking member is configured by a cam and a pin, and a part of the cam surface that comes into contact with the pin Has an arc shape with a center position on the pin side.

  A third configuration for realizing the object of the invention according to the present application is characterized in that the driving force transmission member has a weight member on a side closer to the locking member than the rotation shaft.

  According to the first configuration for realizing the object of the present invention, since no solenoid is arranged on the upper part of the camera, the size in the height direction of the camera can be reduced.

  In addition, a large-sized solenoid having a strong suction force can be arranged, and the releasing force of the spring-biased locking part is increased, so that the strobe does not pop up easily due to an impact or the like.

  In addition, since a dedicated component for adjusting the gap at the tip of the strobe unit is not used, the cost can be reduced and the gap can be made uniform and small.

  According to the second configuration for realizing the object of the present invention, the lever ratio (ratio of the distance from the rotation center to the solenoid output shaft and the distance from the rotation center to the locking component) can be changed without changing the lever ratio. Since the amount of movement can be increased, it is possible to suppress a decrease in the suction force of the solenoid and increase the stroke of the locking component.

  According to the third configuration for realizing the object of the present invention, the inertia of the solenoid core can be canceled when the camera is dropped, and the strobe does not pop up carelessly. Can be improved.

  FIG. 1 is a perspective view of a mechanism arrangement that best represents the features of the present invention, FIG. 2 is an external perspective view of a camera using the unlocking mechanism of the present invention, and FIG. 3 (b) is a similar top view, FIG. 4 (a) is a front view with the strobe popped down, FIG. 4 (b) is a front view with the strobe popped up, and FIG. 5 is a strobe locking release mechanism. FIG. 6 is a perspective view of a state in which the exterior part of the strobe unit is removed, FIG. 7 is a perspective view of the arrangement of the camera upper exterior unit including the strobe light emitting unit, and FIG. Is a rear view up to the unlocking mechanism and the strobe light emitting unit, FIG. 9A is an enlarged view of the power transmission portion of the unlocking mechanism when the strobe light emitting unit is in the pop-down position, and FIG. When the flash unit is in the pop-up position It is an enlarged view of a power transmission part of the unlocking mechanism.

  The configuration of the strobe drive mechanism according to the present invention will be described with reference to FIGS.

  In FIG. 2, 1 is a camera using the unlocking mechanism of the present invention, 2 is a strobe unit provided at the upper part of the camera and locked by the unlocking mechanism, 3 is an upper exterior of the camera 1, and 4 is a photographer. A dial for changing the mode, 5 is a release button to be pressed during shooting operation, 6 is a front exterior of the camera 1, 7 is a photographic lens barrel that can be attached to and detached from the camera 1, E is a shooting optical axis, and 8 is a lock. A release button for manually releasing the stop release mechanism is shown.

  In FIG. 1, 9 is a lens mount for detachably holding the taking lens barrel 7, 12 is an E-plane mirror for guiding light from the taking lens 7 to the viewfinder, and 13 is a similar penta part. Consists of multiple mirrors or prisms. Reference numeral 11 denotes a shutter drive unit that drives a shutter (not shown) that controls exposure of the film. Reference numeral 35 denotes a solenoid that is a power source for releasing the locking means for moving the strobe unit 2 from the storage position to the light emission position. , 32 is a power transmission lever constituting the drive transmission means, and 34 is a solenoid base plate for holding the solenoid 35 and the power transmission lever 32. 33 is a caulking pin for caulking the power transmission lever 32 to the solenoid base plate 34, and 30 is a hook lever which is a locking means for locking the strobe unit 2 in the storage position.

  Each of the above components is assembled to the front plate 10 and screwed to the camera body 14 in a unit state.

  Next, the structure of the locking means releasing mechanism of the strobe unit 2 will be described.

  The solenoid 35 is disposed behind the lens mount 9 and in a space surrounded by the side surface of the front plate 10, the shutter drive unit 11, and the spool chamber 15, and its output shaft 35a (FIG. 5) faces in the vertical direction of the camera. . In this state, the solenoid base plate 34 is screwed with the solenoid screw 36 so that the output shaft 35a of the solenoid 35 and the input portion 32c of the power transmission lever 32 are engaged, and the screw is fixed to the front plate 10 in the unit state. The

The hook lever 30 is disposed on the front side of the camera 1 above the lens mount 9.
L-shaped projections 10a and 10b provided on the front plate 10 are fitted into the holes 30d and 30e of the hook lever 30, and are slidably assembled in the left-right direction. In addition, the input shaft of the hook lever 30 and the output portion 32a of the power transmission lever 32 are arranged to engage with each other.

  In this state, a tension spring 31 is applied between the spring hook 30f of the hook lever 30 and the spring hook protrusion of the front plate 10, and the hook lever 30 is urged to the right toward the front of the camera.

  As described above, the power transmission lever 32 is assembled so that the input portion 32c and the output shaft 35a of the solenoid 35 are engaged, and the output portion 32a and the input shaft 30g of the hook lever 30 are respectively engaged with the caulking pin 33 so as to be rotatable. The downward pulling force of 35 is converted in the left-right direction.

  At this time, the output portion 32a of the power transmission lever 32 and the input shaft 30g of the hook lever 30 are brought into contact with the cam surface 32b on the right side (left side in FIG. 9 when viewed from the rear) toward the camera to move the hook lever 30. Let

  Here, the cam surface 32b has an arc shape having a center on the input shaft 30g side in order to obtain the amount of movement of the hook lever 30.

  Further, a weight member 37 is fixed to the power transmission lever 32 from the caulking pin 33 to the hook lever 30 so that a reaction force against the inertial force of the output shaft 35a of the solenoid 35 is generated when the camera is dropped. As a result, it is possible to prevent disengagement due to a drop impact, and to prevent inadvertent strobe pop-up as a result.

  Next, the internal configuration of the flash unit 2 will be described with reference to FIG.

  Reference numeral 41 denotes a light emitting panel that diffuses strobe light, and 44 denotes a xenon tube that is a light emitting unit. Reference numeral 43 denotes a reflective shade that reflects light from the xenon tube 44, and 45 is a xenon tube rubber that biases and holds the xenon tube 44 toward the reflector. 47 is a glass fiber that is inserted into the light emitting panel 41 and guides the light emitted by the strobe light. 46 is a mounting element, 49 is a lead wire (not shown) fixed to the strobe case 42, and the strobe unit 2 is moved to the light emitting position side. It is a torsion spring that is energized. The torsion spring 49 is rotatably held in the upper exterior 3 by a screw 48 that is the center of rotation. The strobe cover 40 constituting the exterior is fixed to the strobe case 42 with screws, so that the strobe unit 2 is assembled to the camera upper exterior 3 above the camera 1.

  Next, the movement when the strobe unit 2 moves from the storage standby position to the light emission position will be described. 2 and FIG. 4A, when the photographer presses the release button 5 when the strobe unit 2 is in the retracted position as shown in FIG. 2 or FIG. 4A, the solenoid is operated by a command from a CPU (not shown) which is a central processing unit of the camera. A constant voltage is applied to 35. As a result, the output shaft 35a is sucked down the camera, and the input portion 32c of the power transmission lever 32 is pulled down. The suction force is converted from the vertical direction of the camera to the horizontal direction by the rotation of the power transmission lever 32, and the input shaft 30g of the hook lever 30 is moved leftward toward the front of the camera. At this time, the hook lever 30 is pulled against the force of the tension spring 31, and the locking claws 30a and 30b are released from the locking portions 42a and 42b of the strobe unit. By this operation, the strobe unit is lifted to the light emission position by the force of the torsion spring 49, and a stopper (not shown) provided on the upper exterior 3 and the stopper portion 42c of the strobe case 42 come into contact with each other and stop. Actually, a pair of stopper portions 42c are provided on the left and right, but one of them is not shown.

  With the above configuration, the strobe is automatically popped up on the camera side.

  Next, manual strobe pop-up will be described. When the photographer wants to pop up the strobe at his own will, by pressing the release button 8 assembled to the front exterior 6, the convex portion formed at the back of the release button 8 is the contact surface of the hook lever 30. The hook lever 30 is moved to the left toward the front of the camera 1 against the force of the tension spring 31. Then, when the locking claws 30a and 30b are released from the locking portions 42a and 42b of the strobe unit, the strobe unit is lifted to the light emitting position by the force of the torsion spring 49 and a stopper and a strobe case (not shown) provided on the upper exterior 3 The stopper part 42c of 42 contacts and stops.

In an embodiment of the present invention, it is a mechanism arrangement perspective view of a lock release mechanism and a strobe unit. 1 is an external perspective view of a camera according to an embodiment of the present invention. (A) is embodiment of this invention and is a front view which shows a camera main body internal structure. (B) is an embodiment of the present invention and is a top view showing the internal structure of the camera body. (A) is embodiment of this invention, and is a front view of the state which the strobe popped down. (B) is an embodiment of the present invention, and is a front view of a state in which a strobe pops up. In embodiment of this invention, it is a mechanism arrangement | positioning perspective view from the drive part of a strobe lock release mechanism to a locking component. It is the perspective view which removed the exterior component of the strobe light emission part unit in embodiment of this invention. In the embodiment of the present invention, it is a structural arrangement perspective view of a camera upper exterior unit including a strobe light emitting unit. In embodiment of this invention, it is a rear view to the latch release mechanism and strobe light emission part unit. (A) is embodiment of this invention, and is an enlarged view of the power transmission part of the latch release mechanism when the strobe light emission part of FIG. 8 exists in a pop down position. FIG. 9B is an enlarged view of the power transmission portion of the unlocking mechanism when the strobe light emitting unit of FIG. 8 is in the pop-up position in the embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Camera 2 Strobe unit E Image-taking optical axis 9 Mount 14 Main body 32 Power transmission lever 34 Solenoid ground plate 35 Solenoid 36 Solenoid screw 37 Weight member 40 Strobe cover 41 Light emitting panel 42 Strobe case 44 Xenon tube

Claims (3)

In a camera with built-in flash equipped with a light-emitting unit that is pivotally supported so as to be movable between a storage position and a light-emitting position,
A driving member that locks the light emitting unit at the storage position is disposed above the mount portion for attaching / detaching the lens when viewed from the front of the camera and ahead of the pentagonal portion in the optical axis direction, and drives the locking means. The solenoid as a member is arranged with the central axis in the vertical direction of the camera and behind the mount portion in the optical axis direction,
A rotatable driving force transmitting member is rearward in the optical axis direction from the mount portion, the rotating shaft is disposed in the optical axis direction, one end is engaged with the output shaft of the solenoid, and the other end is engaged with the locking member. A camera with a built-in strobe, characterized by being engaged.   The locking portion between the driving force transmission member and the locking member is formed by a cam and a pin, and a part of the cam surface that comes into contact with the pin has an arc shape having a center position on the pin side. The camera with a built-in strobe according to claim 1.   The camera with a built-in strobe according to claim 1, wherein the driving force transmission member has a weight member on the side of the locking member with respect to the rotating shaft.

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