JPS606493B2 - foldable camera - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a camera using a large screen film, and particularly to a foldable camera in which a lens support housed within the camera body is held in front of the camera when not in use. In recent years, various beer-apart type or monosheet type film units have been proposed that apply diffusion transfer photography.
Certain film units are commercially available. This type of film unit has a large screen size due to its nature, and a camera using the film unit is inevitably large in size. In order to use large-screen film, several so-called folding cameras have been proposed in which a bellows that expands and contracts in the optical axis direction is used to make the lens support protrude in front of the exposure aperture during shooting. However, since the bellows overlap in the optical axis direction, the bellows are bulky. In addition, recently, several folding cameras that use a normal image type film unit have been proposed, but none of them are fully satisfactory in terms of the storage structure of the lens support, and there are still problems in making the camera more compact. there were. Therefore, the present invention allows the lens support to be completely housed in the housing provided in the camera body when inconvenient. When in use, the lens support can be moved in front of the exposure aperture of the camera body with a simple operation. The first objective is to provide a foldable camera that can be properly supported. A second object of the present invention is to support the lens support body so that it can be freely extended from the main body, and to rotate the lens support body to a position offset from the exposure opening when it is inconvenient.
To provide a camera that can be shaped into a flat box. A foldable camera according to the present invention supports a lens support incorporating a photographing lens and an exposure means by a link mechanism so as to be swingable and swingable between a first position and a second position.
In the second position, the lens support is supported in front of the exposure aperture so that the optical axis of the lens is perpendicular to the center of the exposure aperture of the camera body, while in the second position the lens support is housed in a housing provided on the camera body. The basic feature is that The link mechanism according to the present invention may include a lens support, a cover, etc. as components of the link structure, and in short, as long as the lens support can be swung between the first position and the second position. good. This link mechanism can adopt several configurations depending on the accommodation state of the lens support. For example, when swinging the lens support from the first position to the second position while maintaining the lens support in the first position, a parallel link is useful and allows for easy positioning in the first position, and position)
, in order to accommodate it by swinging the head at right angles, the lens support can be locked in the first position so as not to swing, and when the lock is released, it can be rotated to the second position while swinging the head. A link mechanism can be adopted, in this case,
The accommodation space for the lens support can be easily set. The light-shielding bellows according to the present invention expands into a substantially rectangular tube shape at the first position of the lens support, and when the lens support is rotated toward the second position, it expands into a flat shape following this rotation. In this case, the light-shielding bellow has a folding convex line and a folding pleat so that it can be folded in a straight line. It is desirable to provide the light-shielding wall or protective cover at the intersection.The light-shielding wall or protective cover according to the present invention covers at least the front surface of the camera body including the lens support when the lens support is housed in the second position. ``If it forms part of a link mechanism, it moves to the link mechanism and automatically covers the front surface.''
In addition, the cover may be operated manually.The present invention will be explained below with reference to the illustrated embodiment. 1 is a roughly flat rectangular parallelepiped camera body; 2 is a camera body that supports a photographic lens 3 in the center, and has an aperture that can be adjusted with a dial 4; ``The lens support 2 has a rectangular prism-like box shape with a lateral length slightly smaller than the inside of the camera body 1, and when shooting, as shown in the figure, the lens support 2 is This storage chamber case 6 has a flat box-like shape and incorporates a strobe light emitting circuit, batteries, etc. in the internal space. It also serves as a part of the cover for the front cover a of the camera body 1 when it is stored.On the other hand, as will be described later, the left and right side walls of the storage chamber case 6 are substantially parallel with each other as one side of the link. Link lever that forms a quadrilateral link
Dentomi is a pair of foldable ring levers that have a locking window in the connecting part.
The Kame Kawama, the upper entrusted Nkreba, share the support of the lower side of the lens supporter, facing the false C-shape, and support the lower side of the lens supporter, which is a parallelogram. The lens support 2 is shared in support of the upper side of the body 2, and the lens support 2 is correctly held in the photographing position by both support mechanisms. 85 forms the lower part of the camera body 1 and is relatively manually operated relative to the camera body as shown by the double arrow X in the figure. This is a slide case with a U-shaped cross section that can be moved up and down with the 2-axis, and has a second housing 16 formed therein, which serves as a housing space for the lens support 2. This slide case 1
5 forms a space in which the lens support 2 can be accommodated in the second housing 16 when pulled out downward, and the lens support 2 accommodated in the second housing 16 when pushed upward.
Push up the slide cover 17 that covers the The slide cover 17 is stretched between the lower side of the front surface of the lens support 2 and the slide case 14, and the slide cover 17 is attached to the front surface of the lens support 2 and the slide case 15 in response to the swinging of the lens support 2. It slides relative to the guide 15a, and serves as a front cover of the camera body 1 together with the housing case 6 when the lens support 2 is stored. In addition, 1
The milk finder, the vine 9, is a strobe light-emitting umbrella, and the two rivers are a slit-shaped film outlet. Next, the folding structure of the camera will be explained with reference to FIG. In FIG. 2, the solid line indicates the photographing state of the camera, the dashed line indicates the state in which the lens support is in the middle of movement, and the dotted line indicates the stored state of the lens support. As is clear from the figure, the lens support 2 is connected to the storage chamber case 6.
The straight long and short link levers 7, 8 and the L-shaped link lever 9 are substantially attached to the side walls 6a, 6b.
The camera is moved to the photographing position by parallel links that are connected to each other and in sequence to form an elongated parallelogram abcd along the direction b, and a pair of center-folding links 10 and 11 that are locked in a straight line by locking means j2. Supported. In this photographing position, the storage chamber case 6 and the long IJ lever 7 are rotated relative to the short IJ lever hook by the locking means provided on the camera body side, although connection points a and b are not specifically shown. locked to prevent
As a result, the parallel link is positioned so as not to fluctuate, and the connection point d with the lens support 2 is also angularly fixed.
In this case, the L-shaped link lever 9 blocks displacement of the steel support 2 in the longitudinal direction. Although not shown in detail, if the vertical portion of the link lever 9 is twisted at least once, slight displacement of the parallel link can be prevented and a kind of reinforcing structure can be formed. can do. On the other hand, among a pair of center-foldable link levers 10 and 11 that support the lower side of the lens support 2, the base end is pivotally attached to the side wall lb of the camera body 1 by a pin 21. At point e, the link levers 10 and 11 are positioned by a stopper or locking means (not specifically shown) so as not to rotate further counterclockwise in the figure, and the mutual connection point f of the pair of link levers 10 and 11 is secured to each other by the locking means 12. As a result, the connection point g between the other link lever 10 and the lens support 2 is fixed, and by fixing the points g and d,
It is held in the shooting position correctly. Note that the slide case 17 does not directly support the lens support 2, but rather supports the lens support 2 under the light-shielding bellows 13 by the green lower edge of the lens support 2 supported at the photographing position (see point h in Figure 2). It is held in an inclined state between the upper edge of the front surface 15a of the slide case 15 (see point h'' in Fig. 2) so as to cover the side surface of the slide case 15. The lens support 2 includes a first housing 14
The supported photographing lens 3 is positioned so that its optical axis is perpendicular to the center of the exposure aperture 22a of the film container 22 which is located in front of the film container 22 and loaded into the first housing 14. On the other hand, in order to store the lens support 2 in the second housing 16 and fold the camera, first the locking means 12 of the pair of center-folding link levers 10 and 11 are unlocked. Release the lock shown by and once slide the slide case 15 downward as shown by the dashed line. After that, the connecting point f of the pair of link bars 10 and 11 is set to f
Fold it into the center fold as shown at point ``, and finally fold it to the position shown at point f''. At this time, the parallel link follows the lens support 2, which rotates following the center fold, and rotates the camera body. The lens support 2 is rotated around the counterclockwise direction in the figure through the states shown at c' and d' to the positions shown at c'' and d'' using the connection points a and b with the sides as rotational fulcrums, and the lens support 2 is moved to its photographic position. The lens support 2 is housed in the second housing 16 by holding it approximately parallel to the second housing 16 through the intermediate position opening shown by the dashed line L and rotating it to the accommodation position C shown by the dotted line. As is clear from the comparison between A and C, the radius of rotation of the center O of the lens support 2 with respect to the pin point a can be substantially decreased from A to C.Lens support 2
After housing the slide case 15, push up the slide case 15 and lock it again at point i. At this time, push the lower end h' of the slide cover 17 up along the front surface to a height h", and press the front surface 2 of the lens support 2.
Cover a. At this stage, the front surface 6c of the storage chamber case 6 is flush with the front surface la of the camera body 1, and together with the slide cover 11 forms a cover for the front surface a of the camera body.
In FIG. 2, reference numerals 23 and 23 denote a pair of processing rollers that send the self-processing type film unit 24 toward the film outlet 201 while applying pressure after exposure, and release the diffusion transfer processing liquid contained in the unit into the unit. It spreads in layers. Second Embodiment: In FIG. 3, which shows the camera in a folded state, ``101 is a relatively flat rectangular parallelepiped camera body'' ``102 is a camera body that forms the same surface as the front surface 101a of the camera body 01 in the folded state. The front cover 102 is a front cover that covers the inside of the camera body, and the front cover 102 matches shallow notch steps 103 that are continuously provided from the front surface 101a side on both side walls 01b and 101c of the longitudinal sides of the camera body 10. rib 104, turtle 0
4 and is provided at one end in the longitudinal direction of the ribs 104, 104.
The ribs 104, 104 are rotatably supported by pins 105, 105 fixed to the ribs 104, 101c, and the other ends of the ribs 104, 104 are provided with knobs 104b, 104b which are notched or otherwise so as to be easily picked by hand. Then, the knob 104b
By pinching the corners 04b, the front cover IQ2 can be freely opened and closed. 106 is a roller housing that is protruded from one side of the camera body 101 and has a pair of processing roller turtles 07 and 107 built therein. , 107 is a slit-shaped film unit outlet, and 109 is a finder provided at the front end side corner of the front cover 102 of the camera body wing 83. In FIG. 4 showing the front cover 102 in an open state, ,1
10', as in FIG. 1, the photographic lens 11 is a rectangular parallelepiped-shaped lens support body which is relatively flat in the optical axis direction and which supports the lens in the center and incorporates a shutter, aperture means, etc. inside. The lens support 101 is swingably supported by a front cover IQ2 and a pair of left and right center-foldable link levers 112, 112 so that it can take the photographing position shown in the figure and the storage position shown in FIG. There is. Reference numeral 113 denotes a first housing for accommodating a film container provided in the center of the camera body 101, and a light-shielding bellow provided between the front surface of the turtle 4 and the back surface of the lens support 110 to the bellows 183. As described above, the lens support body 10 is supported in parallel in front of the front surface IQa of the camera body 101, and the optical axis of the photographing lens 11 is aligned with the front surface IQa.
When the photographing position is perpendicular to Q1a,
The lens support 180 is held in an expanded state, and the lens support 180 is rotated clockwise in the figure, so that the front surface 10 on the viewfinder 109 side
When accommodated in the second housing IQ for accommodating the lens support IQ provided from 1a toward the back side, the lens support 1 follows and rotates, and finally More specifically, the i-th housing 114 and the second housing 15 will be explained with reference to FIGS. 5 and 6. The housing 114 has a chamber in which the film container lug 16 can be positioned and accommodated, and an exposure opening row 14a is provided on the front wall of the housing 114, which is lower than the front surface 101a of the camera body 101. , exposure closing mechanism 16a of the film container i16 loaded inside.
The second housing 115 matches the exposure opening row 143 of the first housing 114.
14, the right side wall 114b and the "finder 1"
It is formed between vertical walls perpendicular to the front surface of the camera body 101 that supports the lens system 09, and the lens support shaft 8 is placed in a state perpendicular to the main body front surface 81a. Accommodate with. On the other hand, in the internal space of the camera body angle 01 on the opposite side of the finder wing 09, there is provided a battery chamber 118 that accommodates a battery that serves as a power source for a drive mechanism (not specifically shown), and an electric motor that serves as a drive source. 9 is provided on the side of the battery chamber 1 8. Next, referring to FIG. 6, the support structure of the lens support 1 0 will be explained in detail. , 110c, the upper right corner p in the figure is rotatably supported by a pin 120 at the front end of the knob 104b of the front cover 102, while the lower right corner q diagonally faces the corner p. is rotatably supported by a pin 121 at the tip of the center-folding link lever 112, and the front cover 102 and the lens support 1
The side surfaces 110b, 110c of No. 10 and the pair of left and right center-foldable link levers 112, 112 constitute a kind of link mechanism. ZThis link mechanism is
The center-foldable link lever 112, which is a pair of a "<"-shaped lever 112-1 and a linear lever 112-2, which are connected to each other by a connecting pin 122, is connected to the stoppers 123 and 1.
When the lens support body 110 is raised up to the Z state where it is stopped at the point 24 and cannot be rotated any further clockwise in the figure, the lens support body 110 is correctly held at the imaging position. In addition, the above stopper 1
23 and 124 indicate the upright position of the link lever 112, and the connecting pin 122 is connected to the lens support 110.
1 and the pins 128 on the main body side and 2, so that the offset position is slightly deviated outward from the line connecting the pins 128 and 2 on the main body side, and care is taken to prevent accidental bending. In order to rigidly support the lens support 110 at the photographing position,
At the lower corner p of the side surface 110b of the lens support 110 on the front cover 102 side, there is a triangular stopper 1 indicated by diagonal lines in the figure.
25, while the knob portion 104b of the front cover 102
A stopper 26 (see the intersecting diagonal lines in the figure) is provided on the inner surface of the lens support 11, which extends linearly from the right side of the figure to the oblique side 125a of the stopper 25 in the photographing position.
The three corners p, q, r of the side surface 110b of 0 are connected to the pins 120
, 121 and the stoppers 125, 126, the triangular point is positioned, and the stopper 125
, 126, one corner of the triangle can also be fixed angularly. Also, the stopper 27 is connected to the hinge portion 1 of the front cover 102.
The stopper 27 restricts further counterclockwise rotation relative to 04a, and the stopper 27 can also be formed using a shallow notch step 103 shown in FIG. On the other hand, if you push the connecting part 22 of the link lever 112 to the left in the figure and fold it in as shown by the imaginary line in the figure,
The linear lever 112-2 rotates counterclockwise around a pin 128 fixed to the camera body 101, while the dogleg-shaped lever 112-1 rotates counterclockwise around a connecting pin 122 as a rotation fulcrum. Rotate clockwise. As a result, the lens support 110 has a dogleg-shaped lever 1.
12-1 through the connecting pin 121, and the front cover 102 also moves with the lens support 1101 through the connecting pin 120.
The lens support 110 rotates clockwise using the rotation fulcrum, and the lens support 110 rotates clockwise using the pin 1 as a rotational fulcrum.
20 as a rotational fulcrum and rests on the inner surface of the front cover 102,
As the front cover 102 rotates, it is rotated to the storage position shown by the imaginary line in the figure, and when the front cover 102 is laid down so as to match the front surface 101a of the camera body 101, it is stored in the second housing 115. In this case as well, as in the first embodiment, the rotation radius for the pin 5 in the storage position can be reduced by the amount of swing compared to that in the photographing position. As shown, the spring hook pin 131 fixed to the camera body 101 side and one lever 112-2 of the link lever 112
The lever 1 is connected between the spring hanging pin 132 installed on the upper part of the lever 1.
When opening the front cover 102 by tensioning the reverse spring portion in which the direction of action of the spring force is reversed in the middle of the rotation of the link lever 12-2, the pair of link levers 112-1, 112-2 mutually engage stoppers 123 and 1
When the link levers 112-1, 112-2 are folded in, both levers 112-1, 11
By biasing 2-2 to fold in, it is effective to semi-automate the opening and closing of the front cover 102, and hence the taking out of the lens support 15 to the photographing position and the storing to the storage position, thereby stabilizing the operation. It is. Next, a description will be given of the bellows 10 13 similar to that shown in FIG.
a is fixed around the exposure closure 114a, and the green end 113b is a substantially rectangular cylinder fixed to the back surface 110d of the lens support 110. While rotating clockwise following the clockwise rotation, it is gradually folded, and finally, it is almost flat between the inner surface of the front cover 102 and the exposure opening row 14a of the first housing 114. When folded, the lens support 110 may be able to swing freely in the folded state. An example of the preferred folding fold formation of the bellows 113 as described above is shown in a developed view in FIG. In addition, its expanded state is shown in Figure 8. In Figure 7, the approximately trapezoidal surface A in the center is ``a part of the link mechanism, as is clear from the comparison with Figures 6 and 8. Side surfaces 110b and 110c of the eggplant lens support 110
corresponds to the bellows side surface 113a on the same side, and the surface B on the left side of the figure is the bellows wide surface 113M facing the front cover 102;
Further, a surface C on the right side of the figure corresponds to another bellows wide surface 113c opposite to the bellows wide surface 113b. In each surface A, B, and C, the dotted line indicates a convex polyline that protrudes relatively outward from the surface defined by the dotted line when the bellows 113 is folded, and the dashed line indicates a convex line that protrudes relatively inward from the surface defined by the dotted line when the bellows 113 is folded. Shows a protruding concave polyline. The above surface B has a green tip b
- color, parallel to 2 with a slight distance and the length of the line segment is slightly longer than the tip green b-1, 2 and b-5, 6, which is parallel to this and has the same line segment length Concave broken line b-3,
4, and correspondingly, said surface C has a tip green c-1
, 2, the length of the line segment is parallel to the distance t2, which is larger than the distance between the upper broken lines b-3 and 4 on the B surface, and the length of the line segment is
Same as above, tip edge c-1, 2 and base edge green c-7, 8
These two concave polylines b-3, 4 and c-3, 4 have longer concave polygonal lines c-3, 4, and ensure the swinging of the lens support 10, and form triangles b-1, 3.
, 5 and b-2, 4, 6, and triangle c-1,
3, 7 and triangles c-2, 4, 8 form a margin to prevent the bellows from stretching during swinging. On the other hand, the surface A corresponding to the tongue side surface has a convex polygonal line a-5, which extends from the base end point a-5 on the surface B side to an endpoint c-3 on the surface A side of the above-mentioned self-concave polygonal lines c-3, 4. 4 and the convex polygonal line a
Green tip divided by river 6, 4 a - turtle, surface a containing 2 - blind, 3,59 4, 2 is horn a - 2, dragon? Three concave polygonal lines a--g, a-5-g, a- that meet at a point g that is approximately equal to the intersection of the bisectors of 3 and angles a-3, 5, and 4.
2-g is "side green a-1, 3, 5 and the above convex broken line a-
It is folded between 4 and 5 and folded flat. on the other hand"
Triangular surface a-4, 59 6 including base green a-5, 6
"3 concave folds a-41h, a-51h? a-6-
h is folded in, and a convex polygonal line a-7 connects point h to point a-7 on surface A, which coincides with one end point c-5 of the second concave polygonal lines c-5 and 6 provided on surface C. -h is "triangle a-4
, h, and triangle a-T? h, 6 are ensured to be folded in opposite directions with the convex fold line a-7-h as a boundary. Note that the other bellows side surface D, which faces surface A, is exactly the same, so illustration and explanation are omitted in FIG. From the expanded state shown in FIG. 9, the lens support 110
When the lens support 11 is stored in the second housing 185, the lens support 11 is swung with reference to the concave fold lines b-3, 4 and c-3, 4, and the folded surface C is c-5. ,6
It is folded in a large amount based on the . On the other hand, on both sides A and D, when the convex polygonal lines a-5 and 4 are rotated clockwise around the base total point a-5, the convex polygonal lines a-5 and
The planes a-1, 3, 574, 2 and the planes a-4, 5, 6, which are divided by
2,g? a-5, g and concave folded twill a-4-h, a-
5, h, a-6, h, the convex polygonal line a-T, h' is folded accordingly, and finally the above convex polygonal line a-594 is folded into each rib b-4, 6, c-3?7. ), are folded so that they match.As a result, the light-shielding bellows 13 is folded into the
It is possible to reliably fold the lens support body IQ upward flatly, and it is also possible to ensure that the lens support body IQ is stored in a state rotated by 90 degrees from the photographing position. In addition, as mentioned above, the surface B on the front cover 102 side, the concave broken line b-3 of the amount 3b
, 4, the surface C, 1 opposite to the surface B
13c concave fold line c-3, 4 fold amount

[2] By making the lens support 110 larger, the lens support 110 can be stored deeply by a depth approximately equal to the height of the first housing 4. This does not prevent the front surface 101a from matching with the front surface 101a. As described in detail above, the lens support 110 is attached to the front cover 1.
02 and the center-folding type 1 non-clever 112, 112,
If you provide a light-shielding bellow that can be supported in a swingable and swiveling manner and that can change between a stretched state and a folded state following the movement of the "lens support body" 10, it can be used in case of inconvenience as shown in Fig. 3. As shown, while the front cover i02 can completely cover the front surface 101a of the camera body 101 when the lens support 110 is completely housed in the second housing 115, the front cover i02 can completely cover the front surface 101a of the camera body 101. If you pick and open the knobs Miyakogame 04b and 104b,
As shown in FIG. 4, the optical axis of the photographing lens 111 with the lens support 110 supported in front of the camera body 101 is
It is possible to reliably locate the photographing position perpendicular to the center of the exposure opening row 14a of the first housing 114. Note that the formation of the folding folds (concave and convex fold lines) of the light-shielding bellows 113 is not limited to the above embodiment, and various methods may be adopted within the scope of the technical idea of the present invention. Needless to say. It should be noted that the green around the base, which should be fixed around the exposure aperture of the camera, has some elasticity and does not prevent it from moving in the lateral direction. As described above, the present invention allows the lens support to be rotatably supported between the photographing position (first position) and the accommodation position (second position) by the link mechanism, and also to follow the rotation of the lens support. A light-shielding bellow is provided that can take an extended state and a flatly folded state, and the optical axis of the photographing lens of the lens support is perpendicular or parallel to the front surface of the camera body. A folding camera is provided in which a lens support is housed in a second housing provided at a position offset from a first housing for a film container, and the front side of the camera body is covered with a front lid. It is something. According to the present invention, since the lens support can be stored in a state substantially parallel or perpendicular to the camera body, the storage space for the lens support can be reduced accordingly, and the storage state can be stabilized. It can be made into something. Furthermore, according to the present invention, since a cylindrical light-shielding bellows that can be folded flat by rotation in one direction is used, the thickness of the bellows when folded can be reduced, and the camera can be The thickness and flatness when folded can be maintained well, the front cover can safely cover the front of the camera, and the front cover can be used as part of the link support mechanism of the lens support, making it an excellent support structure. can be made stable. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing the photographing state of a folding camera according to an embodiment of the present invention; FIG. 2 is a mechanical diagram showing the folding mechanism of the camera shown in FIG. 1; 3 and 4 are perspective views respectively showing the storage state and the photographing state of a foldable camera according to another embodiment of the present invention, and FIG. 5 is a front view of the camera shown in FIGS. 3 and 4. Explanatory diagram: ``Figure 6 is a side explanatory view showing the folding mechanism of the camera shown in Figures 3 and 4, and Figure 7 is an explanatory plan view of the light-shielding bellows used in the foldable camera according to the present invention. "Figure 8 is a perspective view of the bellows, and Figure 9 is a side view of the bellows' folding structure. 1,101...'Camera body, 2,110...Lens Support body "3,111...Photographing lens, 6,7
"102...Front cover" 13,113...
Light-shielding bellows, 14, 114...first housing, 16
, 115...second housing 6a, 6b, 7, 8, 9
, ID, 1 turtle, turtle 2, 竃12-I'll2-2, 102
....Support link mechanism of lens support. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9

Claims (1)

[Claims] 1. A first housing having an exposure opening on the front side of the main body and accommodating the film container so that the exposure opening of the film container matches the exposure opening; a box-shaped main body having a second housing; a lens support supporting at least a photographic lens and incorporating an exposure means therein; A lens support is housed in a first position in which the optical axis of the photographing lens is held perpendicular to the center of the exposure aperture in front thereof, and in the second housing substantially parallel or perpendicular to the camera body. a link mechanism rotatably supported between a second position and a second position; A light-shielding bellow that is extended in the first position and folded flat in the lens support storage position; A bellows cover member that covers a light-shielding bellows that is folded flat, and a lens that works in conjunction with the lens support and covers the lens support on the front side when the lens support is accommodated in the second housing. A folding camera characterized by comprising a cover member.