JP3591981B2 - camera - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an improvement in a camera provided with a cartridge chamber in which a film cartridge is loaded in a longitudinal direction thereof and a lid member for opening and closing the cartridge chamber.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a film used in a camera has a state in which the leading end of the film has been pulled out from a film cartridge storing the film in advance, and the film is loaded into the camera to perform photographing.
[0003]
On the other hand, a film in which the film is completely wrapped in the film cartridge is loaded into the camera, and the spool is rotated to drive out the film. There is proposed a type of film that is guided and driven by a slit formed between the aperture and a side aperture and then wound around a film take-up spool of a camera for initial setting.
[0004]
Further, with respect to a tripod screw hole, most of conventional cameras are formed integrally with the camera body.
[0005]
[Problems to be solved by the invention]
When the tripod screw hole is formed integrally with the camera body as in the above-described conventional example, if the tripod screw hole is damaged for any reason, the camera body must be replaced, and enormous repairs are required. The problem that cost arises arises.
[0006]
In order to solve this problem, a proposal (Japanese Patent Application No. 7-346938) in which a tripod screw is formed on a lid member (cartridge chamber lid) of the film cartridge chamber has already been made by the present applicant. If the lid member has a support member for supporting a spool in the cartridge of the film cartridge loaded in the camera, if a tripod screw hole is provided on the back surface of the lid member having the support member, However, there is a problem that the camera becomes thick in order to obtain a sufficient screw engagement length, and as a result, the camera becomes large.
Furthermore, by the tripod screw hole away from the hinge portion as a rotational center of the lid member, when screwed more strongly to it crowded Ji predetermined amount roots Tripod tripod screw hole (or the state When the camera itself is rotated while holding the tripod from above), the load applied to the hinge part increases, and as a result, the lid member or the hinge part is deformed, and the lid member cannot be closed or is damaged. There was a risk that such a problem would occur.
[0008]
(Object of the invention)
A first object of the present invention is to provide a camera capable of reducing the thickness of a lid member for opening and closing a cartridge chamber and achieving downsizing of the camera.
[0009]
A second object of the present invention is to provide a camera capable of reducing a load applied to a hinge portion serving as a center of rotation of a tripod even when an excessive screwing force is applied when a tripod screw is screwed into a tripod screw hole. Is to provide.
[0010]
A third object of the present invention is to provide a camera that can reduce damage to a lid member due to static pressure from above the camera.
[0011]
A fourth object of the present invention is to reduce a load applied to a hinge portion serving as a center of rotation of a tripod even when an excessive screwing force is applied when a tripod screw is screwed into a tripod screw hole, Another object of the present invention is to provide a camera capable of reducing damage to a lid member due to a static pressure from above the camera.
[0012]
[Means for Solving the Problems]
In order to achieve the first object, according to the present invention, there is provided a cartridge chamber in which a film cartridge is loaded in a longitudinal direction thereof, a lid member for opening and closing the cartridge chamber, and a lid member. A camera provided with a support member for supporting a spool end surface in the film cartridge, and a tripod screw hole formed integrally with the lid member, wherein the tripod screw hole is provided by the support member of the lid member. The structure is provided on the back side other than the position where it is provided.
[0013]
In order to achieve the second object, according to the present invention, a tripod screw hole on a lid member is formed by connecting a hinge portion serving as a rotation center of the lid member and a spool end face in a film cartridge. The supporting member is provided between the supporting member and the back position.
[0014]
In order to achieve the third object, according to the third aspect of the present invention, the tripod screw hole on the lid member is positioned at a position closer to the photographing optical axis than the rear position of the supporting member supporting the spool end surface in the film cartridge. It is provided at a closer position.
[0015]
In order to achieve the fourth object, according to the present invention, a hinge portion serving as a center of rotation of a lid member supports a spool end surface in a film cartridge with respect to an end surface of a camera. It is provided at a position closer to the photographing optical axis than the position of the support member, and a tripod screw hole on the lid member is provided between the hinge portion and the back position of the support member.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail based on illustrated embodiments.
[0017]
FIG. 1 and FIG. 2 are diagrams showing a main part configuration of a camera according to an embodiment of the present invention, FIG. 1 is a cross-sectional view showing a main part configuration of the camera, and FIG. It is a perspective view shown seen from.
[0018]
In these figures, reference numeral 1 denotes a camera body, which has a cartridge chamber 1a for accommodating a film cartridge on the bottom side thereof, and a tapered portion 1c formed on the inner diameter side of the opening 1b for loading the film cartridge. . Reference numeral 2 denotes an exterior cover, which covers the camera body 1.
[0019]
Reference numeral 3 denotes a cover member which is a cartridge chamber cover for opening and closing the cartridge chamber 1a. A rotation shaft hole provided on the bottom side of the exterior cover 2 at a position facing the opening 1b of the camera body 1. The camera body 1 is rotatably supported at 3a and opens and closes an opening 1b formed in the camera body 1. On the outer end (left end in FIG. 1) of the lid member 3, there is provided a lid member opening / closing knob 4 that is exposed on the surface on the bottom side of the exterior cover 2. The lid member opening / closing knob 4 is operated. Thus, the lid member 3 can be locked and released.
[0020]
Further, the inner lid member 5 is screwed into the screw hole 3d by a screw 7 in order to clamp the rubber packing 6 which is an elastic member fitted to the protrusion 3e formed on the inner surface side of the lid member 3 with the lid member 3. A tripod screw hole 3b, to which a tripod (not shown) is attached, is integrally formed on the right side of the outer surface of FIG. 1 of the inner lid member 5, and when shooting using a tripod, the tripod screw hole 3b is formed. Will be attached to the tripod. A plurality of lip portions 6a are formed on the surface of the rubber packing 6 as shown in FIG. 1, and external light enters the cartridge chamber 1a due to the elastic deformation of the lip portions 6a. I try to prevent that.
[0021]
The inner lid member 5 has a function of clamping the rubber packing 6 as described above, and further includes a support member 8 for supporting an end face of a film cartridge inner spool provided in a loaded film cartridge (not shown). It has the function of pinching by. The support member 8 is fitted to a shaft 3c provided on the lid member 3, and can be advanced and retracted in the loading direction of the film cartridge by the action of the coil spring 9.
[0022]
The tripod screw hole 3b is not only provided at a position closer to the rotation shaft hole 3a (hinge part) side, but also close to the photographing optical axis (camera center) 10 as shown in FIGS. Position. This reduces the load on the rotating shaft hole 3a (hinge portion) due to the torsion during the attachment of the tripod screw, prevents the cover member 3 from being deformed, and improves the durability of the hinge portion.
[0023]
The features of the configuration in the above embodiment are in the following three points.
[0024]
The first point is that the tripod screw hole 3b is provided at a rear position of the lid member 3 other than the position where the support member 8 is provided.
[0025]
Therefore, since the position where the tripod screw hole 3b is provided is shifted from the position where the support member 8 is provided, the thickness of the lid member 3 can be reduced. More specifically, by providing a tripod screw hole at the center of the lid member 3, it is possible to prevent the lid member 3 from becoming thicker and not being able to take off the screw engagement. By providing the tripod screw hole 3b by using the extra space inside, the tripod screw hole 3b having a sufficient screw engagement margin can be formed even with the thin lid member 3. This contributes to downsizing of the camera.
[0026]
In addition, since the cover member 3 is provided with the support member 8 for supporting the end surface of the spool in the film cartridge of the loaded film cartridge (not shown), the cartridge of the loaded film cartridge is similar to the prior application. The position in the chamber 1a can be accurately determined, and the film fed from the film cartridge is reliably fed into the camera.
Second, the tripod screw hole 3b is provided on the back side of the lid member 3 shifted from the position where the support member 8 is provided as described above. in that in the configuration provided near the third rotation shaft hole 3a (hinge) it is.
[0028]
Therefore, when the tripod screw is screwed into the tripod screw hole 3b provided in the lid member 3, the hinge portion serving as the center of rotation of the tripod when the screwing is completed, even though the screwing is completed. Can be reduced, and the lid member 3 can be prevented from being easily damaged.
Third, the tripod screw hole 3b is provided near the rotation shaft hole 3a (hinge portion) of the lid member 3 as described above. This is in consideration of a position as close as possible to the optical axis 10).
[0030]
Therefore, since the distance from the tripod (relative to the static pressure point) can be reduced with respect to the static pressure from above the camera, damage to the tripod screw hole 3b due to the static pressure, that is, the lid member 3 Can be reduced. Furthermore, when the camera is mounted on a tripod, the weight balance is improved, and the amount of protrusion of the camera body 1 protruding from the tripod head is almost uniform.
[0031]
The correspondence between each configuration of the above-described embodiment and each configuration of the present invention is already clear because the names of the respective means are the same, but the present invention is limited to the configuration of these embodiments. It is needless to say that any configuration may be used as long as the functions described in the claims or the functions of the embodiments can be achieved.
[0032]
(Modification)
In the above embodiment, the support member 8 for supporting the film cartridge is formed separately from the lid member 3, but may be formed integrally.
Further, the hinge portion of the lid member 3 in the above embodiment has a structure provided at the center side of the camera bottom as shown in FIGS. 1 and 2, but is not limited to this. Even with a structure provided on the end face side of the camera bottom surface (opposite side to FIG. 1), the effect of the second point is that when a tripod screw is screwed into a tripod screw hole 3b provided in the lid member 3, screwing is performed. Is completed, it is possible to reduce the load applied to the hinge, which is the center of rotation of the tripod, when the screw is further screwed in, and the lid member 3 is easily damaged. This has the effect of preventing the situation .
[0034]
Further, the present invention assumes a camera, but is not necessarily limited to this, and has a loading chamber into which a load is inserted into the device and a lid member thereof, and a screw hole fixed to a tripod or the like. As long as it has a structure having the following, the same can be applied.
[0035]
【The invention's effect】
As described above, according to the present invention, the thickness of the lid member for opening and closing the cartridge chamber can be reduced, and the size of the camera can be reduced.
[0036]
Further, according to the present invention, when a tripod screw is screwed into a tripod screw hole, even if an excessive screwing force is applied, a load applied to a hinge portion serving as a center of rotation of the tripod can be reduced or a camera can be moved upward. This can reduce damage to the lid member due to static pressure from the outside.
[Brief description of the drawings]
FIG. 1 is a sectional view of a main part of a camera according to an embodiment of the present invention.
FIG. 2 is a perspective view showing the camera according to the embodiment of the present invention as viewed from the bottom.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Camera main body 1a Cartridge chamber 3 Lid member 3a Rotation shaft hole (hinge part)
3b Tripod screw hole 8 Support member 10 Photographing optical axis (center of camera)

Claims (4)

A cartridge chamber in which a film cartridge is loaded in a longitudinal direction thereof, a lid member for opening and closing the cartridge chamber, a support member provided in the lid member for supporting a spool end surface in the film cartridge, and the lid member And a tripod screw hole formed integrally with the camera,
The camera, wherein the tripod screw hole is provided on a back side of the lid member other than a position where the support member is provided. 2. The camera according to claim 1, wherein the position of the tripod screw hole on the lid member is between a hinge portion serving as a rotation center of the lid member and a back position of the support member. 3. 2. The camera according to claim 1, wherein a position of the tripod screw hole on the lid member is closer to a photographing optical axis than a rear position of the support member. A hinge portion serving as a center of rotation of the lid member is provided at a position closer to a photographing optical axis than a position of the support member with respect to an end surface of a camera, and a position of a tripod screw hole on the lid member is 2. The camera according to claim 1, wherein the camera is located between the hinge portion and a back position of the support member.

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