JP2980491B2 - camera - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more particularly to a camera structure.

[0002]

2. Description of the Related Art Conventionally, as a structure of a single-lens reflex camera,
For example, as shown in FIG. 6, the camera body 11 is a flat plate portion 11c having a rail surface formed as a guide aperture and film so as to connect the cassette chamber portion 11a and the spool chamber portion 11b is formed, and further cassette chamber portion 11a shelf board portion 11d so as to connect the spool chamber portion 11b at the lower side are formed, were so front plate 12 is attached thereto.

Further, as shown in FIG. 7, a metal plate 23 is connected so that the patrone chamber 21a and the spool chamber 21b of the camera body 21 are not connected at the lower side, and the camera body 21 and the front plate 22 are connected at the lower side. In some cases, a die cast 21d indicated by oblique lines is inserted into the aperture of the main body to reinforce the camera.

[0004]

However, in the conventional example of FIG. 6 described above, the strength of the camera body is sufficient and an all-mold camera body 11 is possible, but as shown in FIG. 3B. In addition, the base plate C and the base C formed between the shutter 4 and the camera body 11 cannot be effectively utilized. This is because, when the camera body 11 is formed, when the undercut portion is not formed, the camera body 11 is located below the space C, and the front plate 12 and the shutter 4 and the camera body 11 The use of the space C is restricted, and the degree of freedom of design is impaired, which hinders effective use.

In the conventional example shown in FIG. 7, although the space C can be effectively used, the cost is increased because a die cast 21d is inserted into the camera body to maintain the strength of the camera. I have.

[0006]

[Means for Solving the Problems] In order to solve the above-mentioned problems
In the camera of the present invention, the film cartridge is stored.
Cover the patrone chamber and the spool for winding the film.
Spool chamber, the patrone chamber and the spool chamber.
At least with the aperture and film guide
And a flat plate with a rail surface
From the camera body and the patrone room of the camera body
The patrone chamber extends under the spool chamber.
At least so as to substantially cover the lower side of the spool chamber.
A bottom plate to be fastened to the camera body;
The fastening position for fixing the surface ground plate and the camera body,
At least the position of the patrone chamber and the position of the spool chamber
Position and the position of the flat plate portion, and the lower surface base plate
The parts that make up the film feed system are supported on the lower side.
I'm making it. This makes it possible to increase camera costs without increasing costs.
Lower surface with high degree of freedom in shape without compromising strength
The lower part of the camera can be constituted by the base plate. This
Therefore, as shown in FIG.
And the lens is attached, and from this lens
A front plate supporting a mirror to guide the image to the eyepiece is arranged
In such a case, lower the bottom plate to the space below the front plate.
It is possible to make the shape that can make effective use of the fabric. did
Accordingly, a film feeding system is configured on the lower surface side of the lower surface base plate.
Parts can be supported and the camera can be downsized.
It becomes possible . In addition, fixing the bottom plate to the camera body
The fastening position for at least the position of the patrone chamber,
The position of the spool chamber and the position of the flat plate
The warpage of the camera itself is slightly before the bottom plate is fastened.
Correct any warpage, even if it has
Higher accuracy of aperture and rail surface area affecting back
Accuracy can be improved. Moreover, the warpage after fastening
Generation can be suppressed . In addition, it has the above-mentioned front plate
The bottom plate is fastened to the camera body and the front plate.
Is good .

Further, when attaching the lower surface base plate to the camera body and the front plate, a flat plate portion having an aperture, a rail surface and the like of the camera body 1 shown in FIG.
The front plate 2 portion screwing the (range of hatched portion A), that to not fully pressed the lower surface ground plane in the camera body and the front plate with stepped screws or the like as shown in FIG. 5, the camera without impairing the strength of, it is possible to reduce the deformation of the camera body due to assembly error.

[0008]

1 and 2 show one embodiment of the present invention.
FIG. 1 is a perspective view showing the configuration of a camera body 1, a front plate 2, and a lower surface plate 3, and FIG. 2 is a perspective view of the camera body 1 as viewed from the back.

In FIG. 2, reference numeral 1a denotes a patrone chamber for accommodating a film patrone, 1b denotes a spool chamber for covering a spool for winding the film, 1c denotes a rail surface serving as a film guide, 1d denotes an aperture, and the camera body 1 is a patrone. It comprises a rail surface 1c, an aperture 1d and the like so as to connect the chamber 1a and the spool chamber 1b.

In FIG. 1, reference numeral 1 denotes a camera body, 2 denotes a mounting portion of a mount for holding a lens, a support portion of a mirror unit for guiding an image from the lens to an eyepiece, a support portion of a penta roof prism, and the like. The front plate 3 has a function of supporting a film feed system gear from the patrone chamber of the camera body to the lower side of the spool chamber, and has a function of supporting a lower portion of the spool chamber from the patrone chamber. It is.

The direction in which the front plate 2 is attached to the camera body 1 is as shown in FIG. 1, and the lower base plate 3 is attached upward from below the camera body 1 and the front plate 2.
The lower surface base plate 3 has functions of supporting a gear of a film feeding system, a hinge bearing hole of a back cover, a tripod screw, and the like, and is not simply a plate but a shape having sufficient strength. At the same time, since a single component has multiple functions, the cost is low. Since the lower surface plate 3 is attached so as to substantially cover the lower side of the spool chamber from the patrone chamber of the camera body 1, the strength of the camera body 1 when the lower surface plate 3 is attached to the camera body 1 is shown in FIG. It is equal to or greater than the camera body 11 of the conventional example. Further, a part of the lower surface plate can also serve as the appearance of the camera.

FIGS. 3A and 3B are cross-sectional views of the camera. FIG. 3A is an embodiment of the present invention, FIG. 3B is a conventional example, and 4 is a shutter. In the conventional camera shown in FIG.
The bottom plate (shelf plate 11d in FIG. 6) should be integrated.
From this, because the degree of freedom of the shape of the lower plate is limited,
It is possible to make effective use of the area of the space C shown by hatching.
Each component attached to the camera body 11 is
Attach it under the pace C (that is, below the lower plate).
I have no choice. This has led to larger cameras.
Was. On the other hand, in the camera of this embodiment shown in FIG.
Since the lower base plate 3 is a separate part from the camera body 1,
The degree of freedom of the shape of the surface ground plate 3 can be increased,
Space B corresponding to space C in the example (below lower base plate 3)
Each component is attached to the area of
Can be used effectively. This allows the camera to be downsized.
Can be .

FIG. 4 shows the camera body 1 of the embodiment shown in FIG.
1e is a screw hole for mounting the lower surface base plate 3 of the camera body 1, and 2e is a screw hole for mounting the lower surface plate 3 of the front plate 2.
When attaching the lower surface base plate 3 to the camera body 1 and the front plate 2 with screws, the flat plate portion and the front plate 2 (the range of the hatched portion A ) on which the aperture of the camera body 1 and the rail surface are formed.
In the part to be screwed into the box , the stepped screw 5 is used to prevent the lower base plate 3 from being completely pressed against the camera body 1 and the front plate 2 as shown in FIG. This is the bottom plate 3
When an assembling error occurs due to the dimensional accuracy of the parts when assembling, the flat plate portion and the front plate 2 (the hatched portion A ) on which the aperture of the camera body 1 and the rail surface are formed.
If the part to be screwed is completely tightened with a screw , the camera body 1 is likely to be deformed.
When a large force such as not applied in normal use to the lens tip is applied, the camera body 1 and the front plate 2 and the lower surface base plate 3 is separated is to prevent the fringe Ukoto.

[0014]

As described above, according to the present invention,
After making the camera body and the bottom plate separate,
Attach the camera body and the bottom plate at least in the patrone room.
Fastened at position, spool chamber position and flat plate position
Therefore, without increasing the cost and reducing the strength of the camera
A camera with a bottom plate with a high degree of freedom in shape
The lower part can be configured. Therefore,
At least the lens is attached and
A mirror is supported to guide the image from the lens to the eyepiece.
When the front plate is placed, lower the bottom plate below the front plate.
The shape that can make effective use of the space on the side, that is, the bottom
Supports the components that make up the film feed system on the underside of the surface ground plate
This makes it possible to reduce the size of the camera.
Can be . In addition, the lower base plate and the camera body
Set the fastening position to at least the position of the patrone chamber,
The position of the cooling chamber and the plate
The warpage of the Mera body itself occurs slightly before fastening the bottom plate.
Even if there is, correct the warp, especially flange back
Accuracy of aperture and rail surface area affecting
can do. In addition, warpage after fastening is suppressed
Can be Also, the lower plate and the flat plate of the camera body
Step screws are used for the joint between the bottom plate and the front plate.
And the step length of the step screw is greater than the thickness of the bottom surface of these fastening parts.
If the length is slightly longer, assembly errors due to dimensional errors
Even if there is a change, the camera body (particularly
Shape can be prevented .

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention and showing a configuration of a camera body, a front plate, and a lower surface base plate.

FIG. 2 is a perspective view of the camera body of FIG. 1 as viewed from the rear side.

3A and 3B are cross-sectional views of the camera body, wherein FIG. 3A shows the camera body of the embodiment of FIG. 1 and FIG. 3B shows a conventional example.

FIG. 4 is a bottom view showing a state where the camera body and the front plate of the embodiment of FIG. 1 are attached.

FIG. 5 is a cross-sectional view of a mounting portion of a camera body and a lower surface plate with step screws according to the embodiment of the present invention.

FIG. 6 is a perspective view showing a configuration of a conventional camera.

FIG. 7 is a perspective view showing a configuration of a conventional camera.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Camera main body 1a ... Patrone room 1b ... Spool room 1c ... Rail surface 1e ... Lower surface base plate mounting screw hole 2 ... Front plate 2e ... Lower surface base plate mounting screw hole 3 ... Lower surface main plate 4 ... Shutter 11 ... Camera main body 11a ... Patrone room part 11b ... Spool chamber part 11c ... Flat plate part 11d ... Shelf plate part 12 ... Front plate 21 ... Camera body 21a ... Patrone chamber part 21b ... Spool chamber part 21c ... Flat plate part 21d ... Die cast 22 ... Front plate 23 ... Metal plate

Claims (4)

(57) [Claims] Connecting a 1. A cartridge chamber for accommodating a cartridge of film, a spool chamber which covers the spool for winding the film, and said spool chamber and said cartridge chamber,
At least the aperture and the camera main body formed by integrally formed with the flat plate part and a guide and comprising rail surface film, extending from the cartridge chamber of the camera body toward a lower side of the spool chamber, said from the cartridge chamber At least the camera body so as to substantially cover the lower side of the spool chamber.
A lower surface plate fastened to the camera body, and a fastening position for fixing the lower surface plate and the camera body.
At least the position of the patrone chamber and the spoon.
Position of the chamber and the position of the flat plate, and the lower surface
The base plate supports the components that make up the film feeding system on the lower side.
Camera features that you lifting. 2. The camera according to claim 1, wherein the lower base plate and the flat surface of the camera body are provided.
The camera according to claim 1, wherein a stepped screw is used for a fastening portion with the plate portion, and a length of the stepped portion of the stepped screw is slightly longer than a thickness of a lower surface base plate of the fastening portion. . 3. At least when a lens is attached
In addition, a mirror to guide the image from this lens to the eyepiece
A front plate that is supported, and the lower surface base plate is fastened to the camera body and the front plate.
3. The camera according to claim 1, wherein: 4. A stage fastening portion between the front plate and the lower surface ground plane
Using a screw, the length of the stepped portion of the step screw is
4. The power according to claim 3, wherein the length is slightly longer.
Mela .