JPH07199332A - Arrangement structure for photographic mode switching operating part for camera with panoramic shot function - Google Patents

Abstract

PURPOSE:To make the constitution of a driving mechanism simple and to decrease the number of parts by disposing a photographic mode switching operating part on the projection part of the driving mechanism of a light shielding board and in front of a camera in a panoramic shot function by which photographic modes (a panoramic mode, a normal mode, etc.) are changed by making the light shielding board disposed in front of an aperture occupy and retreat from the upper and the lower parts of the aperture. CONSTITUTION:The light shielding boards 42 and 43 are turnably provided in front of the aperture, and driving force to turn the boards 42 and 43 is inputted from a light shielding board driving boards 25 and 26. A switching knob 10 is disposed on the projection part of the driving board 26 which is on the front part of the camera on a lower side. The knob 10 is linked with the driving board 26 by a panoramic sliding board 31, and the driving board 26 is turned by sliding the sliding board 31 by the operation of the knob 10. The driving board 26 is linked with the driving board 25 so as to turn the driving board 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention selectively performs shooting in a normal mode in which the film is full-sized and shooting in a so-called panoramic mode in which the upper and lower portions of a full-size frame are covered. Of a camera that can
The present invention relates to an arrangement structure of a switching operation unit that switches shooting modes.

[0002]

2. Description of the Related Art For example, a 35 mm film has a size of 24 mm × 36 mm when one frame is used as a full size. Recently, cameras that have a panoramic shooting function have become widespread, except for the top and bottom of this full-size screen, for example, a landscape screen with a size of about 16 mm x 36 mm is used to give exposure only to this part. There is. Then, since the subject can be captured in a landscape orientation by performing panoramic shooting using a wide-angle shooting lens, it is possible to create a photograph suitable for recording a landscape or a construction site.

Among conventional cameras with a panoramic photographing function of this type, there is one having a structure in which a movable light shielding plate is provided in front of the aperture. That is, when shooting in normal mode, the light shield is retracted from the front of the aperture to open the entire aperture to expose the film, and when shooting in panorama mode, the light shield is placed above and below the aperture. Exposure is performed while the upper and lower parts of the aperture are covered by occupying the position. As a result, in normal mode, the film is exposed over the entire area of the aperture, so you can take a full-size photograph, and in panorama mode, the upper and lower parts of the aperture are covered with a shading plate to expose only the center of the film. You can take a panorama size photo with a horizontal screen.

To switch the shooting mode in such a camera with a panoramic shooting function, a switching operation section such as a mode switching knob provided on the outer surface of the camera is operated. By operating the operation unit, the light shielding plate is driven through the link mechanism or the like, and is retracted to the upper and lower portions of the aperture.

[0005]

However, since the photographing mode switching operation portion of the conventional camera having the panoramic photographing function described above is arranged on the side of the eyepiece window of the finder of the camera or on the bottom surface of the camera, There is such a problem. Since the shading plate needs to be receded with respect to the upper and lower parts of the aperture, the shading plate is supported in front of the aperture. Since the drive mechanism of the light shielding plate constitutes a path for transmitting the driving force input to the switching operation portion to the light shielding plate, the output end of the drive mechanism, that is, the input portion to the light shielding plate is located in front of the aperture. positioned. For this reason, a power transmission path from the operation portion arranged on the side of the viewfinder eyepiece window or on the bottom surface of the camera to the light shielding plate supported in front of the aperture is configured, and this path becomes complicated. The number of components increases, and the degree of freedom of the space for arrangement is limited.

Therefore, the present invention reduces the number of parts of the power transmission path from the switching operation portion to the light shielding plate, and
An object of the present invention is to provide an arrangement structure of a shooting mode switching operation unit of a camera with a panoramic shooting function, which can simplify a drive mechanism of a light shielding plate without using a complicated structure.

[0007]

As a technical means for achieving the above-mentioned object, the arrangement structure of the photographing mode switching operation section according to the present invention is such that photographing in a normal mode with a normal screen size and aperture. A camera with a panoramic shooting function capable of switching between shooting in a panorama mode in which the upper and lower portions of the normal screen size are covered by a light shielding plate to provide a horizontally long screen size excluding the upper and lower portions of the normal screen size. The retraction operation for the upper and lower parts of the aperture is performed via the light shield driving mechanism arranged inside the camera, and the switching operation unit for inputting to the light shield driving mechanism is provided.
It is characterized in that it is arranged on the front surface of the camera and in the projection portion of the light shielding plate drive mechanism.

[0008]

When the switching operation section is operated, the light shielding plate driving mechanism is driven and the light shielding plate is driven. For example, when the switching operation unit is slidably provided, sliding the operation unit to one side switches the shooting mode from the normal mode to the panorama mode. That is, the light shielding plate retracted from the front of the aperture is driven to occupy the upper and lower portions of the aperture and cover the portion. Further, when the switching operation section in the panorama mode is slid in the opposite direction to the above, the photographing mode is switched to the normal mode, and the light shielding plate is retracted from the front of the aperture to open the upper and lower parts of the aperture.

Since the switching operation unit is disposed on the front surface of the camera, the light-shielding plate drive mechanism extending from the switching operation unit to the light-shielding plate has a member for inputting a driving force to the light-shielding plate, the member and the switching operation unit. It may be configured by a member that directly connects and.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The arrangement structure of the shooting mode switching operation section of the camera with panoramic shooting function according to the present invention will be specifically described below with reference to the illustrated embodiments.

FIG. 4 is a front view of a camera provided with this photographing mode switching operation section, and a photographing lens 1 held by a lens barrel 1a is arranged at a substantially central portion. A switching knob 10 as a switching operation unit is provided on the lower left side of the taking lens 1 so as to be slidable along a part of an arc centered on the optical axis of the taking lens 1. One end of the sliding range of the switching knob 10 corresponds to the off-index 11 of the main switch, and the center part is on of the main switch and the normal mode index of the shooting mode.
12, and the panorama mode index 13 corresponds to the other end.

Further, this camera is equipped with a zoom device for moving the photographing lens 1 back and forth in the direction of the optical axis to change the focal length, and on the right side of the photographing lens 1, there is a tele switch for zoom drive. 2 and a wide switch 3 are arranged. Further, a finder window 4 is arranged on the upper side of the taking lens 1, and a stroboscopic light emission window 5 is arranged on the side thereof. A distance measuring window 6 is arranged on the opposite side of the strobe light emitting window 5 with the finder window 4 interposed therebetween, and a distance measuring element (not shown) for an automatic focusing device is provided behind the distance measuring window 6. There is. On the right side of the taking lens 1 and above the teleswitch 2 and the like, a display lamp 7 for self-timer photographing is arranged. In addition, a red-eye reduction lamp 8 is provided in the center of the distance measuring window 6 in order to avoid a red-eye phenomenon during flash photography.
Etc. are arranged.

FIG. 1 is a sectional view of the camera taken along the line AA in FIG. 4, and is a view for explaining the light-shielding plate drive mechanism.
FIG. 2 is an exploded perspective view showing the outline of the main part of the drive mechanism. Inside the camera body 20, the panorama base plate 21 has a set screw.
It is fixed by 21a. This panorama main plate 21 has a shape in which a part of one of the L-shaped arms of a plate material bent into an L-shaped cross section is bent midway to form a step at an L-shaped bent portion. The upper step surface 21b is provided with a pair of support shaft portions 22a, 22b at appropriate intervals, and the lower step surface 21c is provided with a pair of guide portions at a position between a pair of vertically extending rail portions 23a and the rail portion 23a. A block 23 is provided. In addition, a screw hole 23 is provided between the pair of guide blocks 23.
b is formed. Furthermore, the rail portion of the lower step surface 21c
A latching portion 24 for latching one end of a drive spring, which will be described later, is provided on the side of 23a.

The panorama main plate 21 is the panorama main plate.
A panoramic slide plate 31 is supported slidably with respect to 21.
The panoramic sliding plate 31 is formed in a T-shape in cross section, and a guide hole 32 having a longitudinal direction in the up-down direction is formed in the flat plate portion where the T-shaped leg portion 31a is formed. 31
An insertion hole 33 is formed in the vicinity of b and adjacent to the guide hole 32, and an insertion hole 33 is formed in parallel with the guide hole 32. Further, a restriction hole 34 having an approximately L shape is formed adjacent to the insertion hole 33. There is. Then, the guide holes 32 of the panoramic slide plate 31 are fitted into the guide blocks 23 of the panoramic base plate 21, and the panoramic slide plate 31 is slidably supported on the panoramic base plate 21. Further, the pan-shaped sliding plate 31 has a substantially T-shaped head 31b.
A main switch contact piece 35 is fixed to the front surface of the with a set screw 35a. Further, a drive hole 36 having a substantially horizontal direction as a longitudinal direction is formed in the lower portion of the head portion 31b.

An engaging pin 10a implanted on the rear surface of the switching knob 10 has a through hole (not shown) formed in the camera body 20 along an arc guiding the sliding of the switching knob 10. And is inserted into the drive hole 36. This switching knob
A through hole 10b is formed in the central portion of the hole 10. As shown in FIGS. 2 and 3, the lock pin of the lock member 14 is inserted into the through hole 10b.
14b is inserted. The lock member 14 is formed by implanting the lock pin 14b at one end of a main body 14a made of a plate material and implanting a stopper pin 14c at the other end. The stopper pin 14c is loosely inserted in a limiting groove 15 formed on the inner surface of the camera body 20, and the limiting groove 15 is used for the switching knob 10c.
Is formed in a range that allows sliding between the off index 11 and the on (or normal mode) index 12 of the main switch. Therefore, the switching knob 10 cannot be moved to the panorama mode index 13 when the stopper pin 14c is inserted in the limiting groove 15. The lock member 14 has a pressing spring formed of a leaf spring fixed to the inner surface of the camera body 20 by a set screw 16a.
The restoring force of 16 is biased so that the stopper pin 14c is not easily separated from the limiting groove 15. When the lock pin 14b is inserted through the through hole 10b of the switching knob 10, the tip of the lock pin 14b is appropriately projected from the upper surface of the switching knob 10 as shown in FIG. is there.

The support shaft portions 22a, 2 of the panorama main plate 21
2b includes upper shading plate driving plate 25 and lower shading plate driving plate, respectively.
26 are rotatably loosely fitted, and set screws 22c prevent them from falling off. These shading plate drive plates 25,
Each of the 26 has fan-shaped gear portions 25a and 26a, and these gear portions 25a and 26a mesh with each other. The upper drive arm 25b is provided on the opposite side of the gear portion 25a with the rotating shaft of the upper light-shielding plate drive plate 25 interposed therebetween.
Is extended, and an upper drive pin 25c is planted at the tip of the upper drive arm 25b so as to project in a direction parallel to the rotation axis of the upper light shield drive plate 25.

A lower drive arm 26b extends on the opposite side of the fan gear portion 26a with the rotary shaft of the lower light shield drive plate 26 interposed therebetween, and a tip end portion of the lower drive arm 26b extends. The lower drive pin 26 projects in a direction parallel to the rotation axis of the lower drive plate 26.
c is planted. The gear part of this lower shading plate drive plate 26
An input arm 27 is formed on a side portion of the gear 26a by extending the arc of the gear 26a in a substantially extended direction. A latching portion 27a for latching the end of the drive spring is formed at the tip of the input arm 27, and an input pin 27b is provided in the middle portion so as to be oriented toward the panorama main plate 21 side. There is.

Then, with the panoramic base plate 21 fixed to the camera body 20 and the panoramic slide plate 31 being overlaid, the guide block 23 and the hooking portion 24 of the panorama base plate 21 are guided by the guide holes of the panoramic slide plate 31. It is in a state of being respectively inserted into the 32 and the insertion hole 33. In this state, a drive spring 28, which is a toggle spring, is stretched between the hooking portion 24 of the panorama bottom plate 21 and the hooking portion 27a formed on the lower light-shielding plate driving plate 26. Also, with the panoramic base plate 21 and the panoramic slide plate 31 superposed, as shown in FIG.
The panoramic sliding plate 31 is prevented from falling off from the panoramic base plate 21 by being screwed into the screw 23b and by the head of the set screw 23c.

On the other hand, an aperture frame 41 is fixed to the rear portion of the camera body 20, and the upper and lower parts of the front surface of the aperture frame 41 are rotated about a rotation axis in a direction parallel to the horizontal direction orthogonal to the optical axis. An upper light blocking plate 42 and a lower light blocking plate 43 are movably supported. These light-shielding plates 42 and 43 are aperture frames
Shafts 42a, 43a held by forks 41a, 41b formed on the front surface of 41 are formed at one end, input wings 42b, 43b are formed at the other end, and an aperture frame 41 is provided outside the input wings 42b, 43b. Shafts 42c, 43c held by the formed bearing plates 46a, 46b
Is protruding. The light shielding plates 42, 43 are adapted to occupy the upper and lower portions of the aperture 44 opened in the central portion of the aperture frame 41 by the rotation of the light shielding plates 42, 43. That is, when the light shielding plates 42 and 43 are occupying the upper and lower portions of the aperture 44 and covering the relevant portion, the aperture is reduced.
44 is a horizontally long frame, and no exposure is given to the upper and lower parts of the film positioned behind the aperture 44, and a panoramic size photograph can be taken. Further, when the light shielding plates 42 and 43 are retracted from the upper and lower parts of the aperture 44, the aperture 44
The whole is open and you can take a normal size photo by exposing the entire surface of the film. In addition, each shading plate
A return spring 45, which is a torsion coil spring, is fitted to the shaft portions 42c and 43c of the shafts 42 and 43. The light shielding plates 42 and 43 are rotated from the panoramic position to the normal position by receiving the restoring force of the return spring 45. I am doing it.

Then, the panoramic base plate 21 and the panoramic sliding plate
31, the aperture frame 41, the light blocking plates 42, 43 are assembled in the camera body 20, and the drive pins 25 of the respective drive arms 25b, 26b of the light blocking plate drive plates 25, 26 pivotally supported by the panoramic base plate 21.
The c and 26c are in contact with the input wings 42b and 43b of the light shielding plates 42 and 43. Further, the switching knob 10 is exposed on the front surface of the camera.

The switching operation of the light shielding plate by the arrangement structure of the photographing mode switching operation section of the camera with a panoramic photographing function according to the present invention constructed as described above will be described below.

When the camera is used for shooting,
The switching knob 10 provided on the front surface of the camera is slid from the position of the off index 11 of the main switch to the position of the normal mode index 12. The lock member 14 is pressed against the back surface of the switching knob 10 by the pressing spring 16, and the stopper pin 14c of the lock member 14 is loosely inserted in the restriction groove 15 formed on the inner surface of the camera body 20. The groove 15 allows the stopper pin 14c to slide only between the OFF index 11 position and the normal mode index 12 position of the switching knob 10.
Therefore, when operating the switching knob 10, if the lock pin 14b protruding from the switching knob 10 is moved to the normal mode index 12 side without operating, the position of the normal mode index 12 is passed. It does not move to the position of the panorama mode index 13. With the switching knob 10 moved to the position of the normal mode index 12, the main switch contact piece 35 is switched and turned on to put the camera in the operating state and ready for photographing.

To switch the photographing mode to the panorama mode, the switching pin 10 is moved from the normal mode index 12 position to the panorama mode index 13 position while pushing the lock pin 14b. When the lock pin 14b is pushed in, the main body portion 14a of the lock member 14 is separated from the rear surface of the camera body 20 against the restoring force of the pressing spring 16, so that the stopper pin
14c will come out of the limiting groove 15. Therefore, it becomes possible to move the switching knob 10 to the position of the panorama mode index 13, and the stopper pin 14c is attached to the camera body.
The back side of 20 will be scraped.

When the switching knob 10 moves to the position of the panorama mode index 13, the engaging pin 10 planted in the switching knob 10
Since a is inserted in the drive hole 36 of the panoramic sliding plate 31, the panoramic sliding plate 31 is pushed down with respect to the panoramic base plate 21. Restriction hole of this panorama sliding plate 31
Since the input pin 27b of the lower light-shielding plate driving plate 26 is inserted into the 34, the input pin 27b is pushed by the upper end of the limiting hole 34. Therefore, the lower shading plate drive plate 26 is
It will rotate counterclockwise in FIG. 2 about 22b. Further, when the lower light-shielding plate drive plate 26 is rotated to an appropriate position, it is smoothly rotated by receiving the restoring force of the toggle function of the drive spring 28.

The fan-shaped gear portion 26a of the lower light-shielding plate driving plate 26
Since the fan-shaped gear portion 25a of the upper light-shielding plate drive plate 25 is meshed with the upper light-shielding plate drive plate 25, the rotation of the lower light-shielding plate drive plate 26 causes the upper light-shielding plate drive plate 25 to rotate clockwise around the support shaft portion 22b in FIG. Will rotate in the direction. Then, the drive pins 25 planted in the drive arms 25b and 26b of the light shielding plate drive plates 25 and 26, respectively.
Since c and 26c are in contact with the input wings 42b and 43b of the shading plates 42 and 43, the shading plates 42 and 43 are pushed. For this reason,
In FIG. 2, the upper light blocking plate 42 rotates counterclockwise to occupy the upper part of the aperture 44 against the restoring force of the return spring 45, and the lower light blocking plate 43 rotates clockwise. Then the lower part of the aperture 44 is occupied. Therefore, the upper and lower parts of the aperture 44 are covered, and the film is photographed in a horizontally long panoramic size in which the upper and lower parts of the film are not exposed.

While the photographing mode is in the panorama mode, impact is applied to the camera, or the back cover of the camera is opened and the light blocking plates 42 and 43 are directly pushed in, so that the light blocking plate 42,
When 43 tries to return to the normal position, the lower light-shielding plate driving plate 26 rotates clockwise in FIG. 2 and pushes up the panoramic sliding plate 31. The switching knob 10 is pushed up in conjunction with the operation of the panorama slide plate 31, but the stopper pin 14c of the switching knob 10 moves by rubbing the back surface of the camera body 20, so that the shading plates 42, 43 An inadvertent force is not applied to any of the mechanisms that drive the drive mechanism, and the components of the drive mechanism are not damaged.

To switch the shooting mode from the panorama mode to the normal mode, the switching knob 10 is moved from the panorama mode index 13 position to the normal mode index 12 position. This movement pushes up the panorama slide plate 31, the restriction hole 34 releases the constraint of the input pin 27b, and the lower light-shield plate drive plate 26 becomes free. Therefore, the lower light-shielding plate drive plate
The lower light-shielding plate 43 held by 26 becomes free, and the restoring force of the return spring 45 causes the lower light-shielding plate 43 to rotate counterclockwise in FIG. This rotation causes the lower light-shielding plate drive plate 26 to rotate clockwise around the support shaft portion 22b in FIG. 2, and the upper light-shielding plate drive plate 25 in FIG. 2 is supported by the engagement of the fan gears 25a and 26a. Part 22
It will rotate counterclockwise around a.
Since the upper light blocking plate 42 is also freed by the rotation of the upper light blocking plate drive plate 25, the upper light blocking plate 42 is rotated in the clockwise direction in FIG. 2 by the restoring force of the return spring 45. That is, the light shielding plates 42 and 43 can be retracted from the upper and lower portions of the aperture 44 to expose the film in a normal size over the entire aperture 44.

When the lower light-shielding plate driving plate 26 is rotated to an appropriate position, a force for rotating the lower light-shielding plate driving plate 26 in the clockwise direction is given by the restoring force of the toggle function of the driving spring 28. To be Also, when the switching knob 10 slides to the position of the normal mode index 12, the stopper pin 14c of the lock member 14 is inserted into the limiting groove 15 by the restoring force of the pressing spring 16, and unless the lock pin 14b is pushed in thereafter, the panorama mode is set. The switching knob 10 cannot be moved to the position of the index 13.

Then, if the switching knob 10 is moved to the position of the off-index 11 of the main switch, the main switch contact piece 35
Is turned off and the camera is deactivated.

As described in this embodiment, the switching knob 10
Is disposed on the front surface of the camera and on the projection portion of the light shielding plate drive plates 25 and 26, the switching knob 10 and the lower light shielding plate drive plate
Only the panoramic slide plate 31 connects the 26 and 26.
That is, since the sliding operation of the switching knob 10 is simply transmitted to the light shielding plate drive plate 26 directly by the panoramic sliding plate 31,
The number of components of the light-shielding plate drive mechanism can be reduced.

Further, in this embodiment, the structure in which the switching of the photographing modes is performed by the rotating operation of the light shielding plates 42 and 43 arranged in front of the aperture 44, the operation of the light shielding plates 42 and 43 is shown. The structure may be such that the front part of the aperture 44 is retracted by sliding, for example, instead of rotating.

Further, in this embodiment, the structure in which the main switch of the camera is turned on / off and the photographing mode is changed by operating one switching knob 10 has been described.
The shooting mode switching operation unit may be separate from the main switch. However, if integrated as in this embodiment, the main switch can be turned on / off and the shooting mode can be switched by a single operation, so that the operability is improved and the number of switch-related parts is reduced. Is preferred, which is preferable.

[0033]

As described above, according to the arrangement structure of the shooting mode switching operation section of the camera with panoramic shooting function according to the present invention, the shooting mode switching operation section is provided on the front surface of the camera and driven by the light shielding plate. Since it is arranged in the projection part of the mechanism, if a member for directly connecting the input part of the driving force to the light shielding plate and the switching operation part is provided, the switching operation of the switching operation part is transmitted to the light shielding plate. The light shielding plate can be driven. Therefore, it is possible to configure the light-shielding plate drive mechanism with components having a simple shape and reduce the number of components without forming a complicated component configuration.

Further, since the switching drive mechanism can be composed of simple parts, the operation of the switching operation portion can be reliably transmitted to the light shielding plate.

[Brief description of drawings]

FIG. 1 is a view for explaining a state in which a shooting mode switching operation section according to the present invention and a drive mechanism for a light shielding plate are linked, and is a cross-sectional view taken along the line AA in FIG.

FIG. 2 is a schematic exploded perspective view for explaining the structure of a drive mechanism for a light shielding plate.

FIG. 3 is a schematic diagram for explaining the structure of a switching knob that is a switching operation unit, and is a cross-sectional view taken along a plane substantially orthogonal to the moving direction of the switching knob.

FIG. 4 is a schematic front view of a camera with a panoramic image capturing function having an arrangement structure of an image capturing mode switching operation unit according to the present invention.

[Explanation of symbols]

 1 Shooting lens 10 Switching knob (shooting mode switching operation part) 10a Engagement pin 11 Main switch off index 12 Normal mode index 13 Panorama mode index 20 Camera body 21 Panorama ground plate 25 Upper light-shielding plate drive plate 25a Fan-shaped gear part 25b Upper drive Arm 25c Upper drive pin 26 Lower light shield plate Drive plate 26a Fan gear 26a Lower drive arm 26c Lower drive pin 27 Input arm 27b Input pin 31 Panorama slide plate 32 Guide hole 33 Insertion hole 34 Restriction hole 36 Drive hole 41 Aperture frame 42 Upper light shield 42b Input wing 43 Lower light shield 43b Input wing 44 Aperture 45 Return spring

Claims (1)

[Claims] 1. A photographing in a normal mode having a normal screen size, and a panoramic mode having a horizontally long screen size excluding the upper and lower parts of the normal screen size by covering the upper and lower parts of the aperture with a light shielding plate. In a camera with a panoramic shooting function capable of switching between shooting and shooting, the occupancy of the upper and lower parts of the aperture of the light shielding plate is performed by a light shielding plate driving mechanism provided inside the camera. An arrangement structure of a photographing mode switching operation unit of a camera with a panoramic photographing function, characterized in that a switching operation unit for inputting to the camera is disposed on the front surface of the camera and on the projection unit of the light shielding plate drive mechanism.