JPH09292653A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the thickness of a cover member and to miniaturize a camera by providing a tripod screw hole on the rear side except a position in which a supporting member is provided, of the cover member for opening/ closing a cartridge chamber. SOLUTION: The tripod screw hole 3b is provided on the rear surface position of the cover member 3 except the position in which the supporting member 8 is provided. Since the position in which the tripod screw hole 3b is provided is deviated from the position in which the supporting member 8 is provided, the thickness of the cover member 3 can be reduced. Further, it is constituted so that the supporting member 8 for supporting the end face of a spool in a film cartridge is provided on the cover member 3, so that the loaded film cartridge can be accurately positioned in the cartridge chamber 1a and the film fed from the film cartridge can be surely fed into the camera. For instance, when a tripod screw is strongly screwed, a load applied to a hinge part is reduced because the shifted position of the tripod screw hole 3b is provided in the vicinity of the rotary shaft hole 3a (hinge part) of the cover member 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a camera having a cartridge chamber in which a film cartridge is loaded in its longitudinal direction and a lid member for opening and closing the cartridge chamber.

[0002]

2. Description of the Related Art Conventionally, a film used in a camera is in a state in which a front end of the film is pulled out in advance from a film cartridge for accommodating the film, and the film is loaded into the camera for photographing. .

On the other hand, a film in which the film is completely wound in the film cartridge is loaded in the camera in advance, and the spool in the film cartridge is rotationally driven to send out the film, and the film front end is attached to the camera pressure plate. There is proposed a type of film which is guided and driven to a slit portion formed between an aperture portion on the camera body side and then wound around a film take-up spool of a camera for initial setting.

As for the tripod screw holes, most conventional cameras are formed integrally with the camera body.

[0005]

DISCLOSURE OF THE INVENTION With respect to a tripod screw hole,
In the case where the tripod screw hole is damaged for some reason when it is formed integrally with the camera body as in the above-mentioned conventional example, the camera body must be replaced, resulting in a huge repair cost. There is a problem that it ends up

In order to solve this problem, a proposal (Japanese Patent Application No. 7-346938) that a tripod screw is formed on the lid member (cartridge chamber lid) of the film cartridge chamber.
Has already been made by the applicant of the present application, but in the case where the lid member has a supporting member for supporting the spool in the cartridge of the film cartridge loaded in the camera, a tripod is provided on the rear surface of the lid member having the supporting member. If the screw holes are provided, the lid member becomes thick in order to obtain a sufficient screw engagement length, resulting in a problem that the camera becomes large.

Further, when the tripod screw hole is separated from the hinge portion, which is the center of rotation of the lid member, when the tripod screw is screwed into the tripod screw hole by a predetermined amount but is screwed more strongly (or from this state). When the camera itself is rotated while holding a tripod, the load applied to the hinge portion increases, and as a result, the lid member or hinge portion is deformed, and the lid member cannot be closed or damaged. There was a risk of problems such as being lost.

(Object of the Invention) A first object of the present invention is to provide a camera in which the thickness of the lid member for opening and closing the cartridge chamber can be reduced and the camera can be miniaturized. is there.

A second object of the present invention is to reduce the load applied to the hinge portion, which is the center of rotation of the tripod, even when an excessive screwing force is applied when the tripod screw is screwed into the tripod screw hole. It is to provide a camera that can.

A third object of the present invention is to provide a camera capable of reducing damage to the lid member due to static pressure from above the camera.

A fourth object of the present invention is to reduce the load applied to the hinge portion, which is the center of rotation of the tripod, even when an excessive screwing force is applied when the tripod screw is screwed into the tripod screw hole. It is an object of the present invention to provide a camera capable of reducing the damage to the lid member due to static pressure from above the camera.

[0012]

In order to achieve the first object, the present invention according to claim 1 is for opening and closing the cartridge chamber in which a film cartridge is loaded in the longitudinal direction thereof. A lid member, a support member provided on the lid member for supporting a spool end surface in the film cartridge, and a tripod screw hole integrally formed with the lid member. The structure is provided on the back side of the lid member other than the position where the support member is provided.

In order to achieve the second object,
According to the second aspect of the present invention, the tripod screw hole on the lid member is provided between the hinge portion, which is the center of rotation of the lid member, and the back position of the support member that supports the spool end face in the film cartridge. I have to.

Further, 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 provided at a position closer to the photographing optical axis than the rear position of the support member that supports the spool end surface in the film cartridge.

In order to achieve the above-mentioned fourth object,
According to a fourth aspect of the present invention, the hinge portion that is the center of rotation of the lid member is located closer to the photographing optical axis than the position of the support member that supports the end surface of the spool in the film cartridge with respect to the end surface of the camera. And a tripod screw hole on the lid member is provided between the hinge portion and the back surface position of the support member.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on illustrated embodiments.

FIG. 1 and FIG. 2 are views showing a main structure of a camera according to an embodiment of the present invention, FIG. 1 is a sectional view showing a main structure of the camera, and FIG. It is a perspective view shown from the bottom side.

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 taper portion 1c formed on the inner diameter side of an opening 1b for loading a film cartridge. Has been done. Reference numeral 2 is an exterior cover, which covers the camera body 1.

Reference numeral 3 is a lid member which is a cartridge chamber lid for opening and closing the cartridge chamber 1a, and is provided on the bottom side of the exterior cover 2 at a position facing the opening 1b of the camera body 1. It is rotatably supported by the moving shaft hole 3a and opens and closes the opening 1b formed in the camera body 1. A lid member opening / closing knob 4 exposed on the bottom surface of the exterior cover 2 is provided on the outer end portion (left end portion in FIG. 1) of the lid member 3, and the lid member opening / closing knob 4 is operated. By doing so, the lid member 3 can be locked and released.

Further, the rubber packing 6 which is an elastic member fitted to the projecting portion 3e formed on the inner surface side of the lid member 3.
The inner lid member 5 is fixed to the screw hole 3d with a screw 7 in order to sandwich the inner lid member 5 with the lid member 3. A tripod (not shown) is attached to the right side of the outer surface of the inner lid member 5 in FIG. The screw hole 3b is integrally formed, and in photographing using a tripod, the tripod is attached to the tripod screw hole 3b. The surface of the rubber packing 6 is shown in FIG.
As shown in FIG. 3, a plurality of lip-shaped portions 6a are formed to prevent outside light from entering the inside of the cartridge chamber 1a due to elastic deformation of the lip-shaped portions 6a.

The inner lid member 5 has a function of holding the rubber packing 6 as described above, and a support member 8 for supporting the end surface of the spool in the film cartridge provided in the loaded film cartridge (not shown). It has a function of sandwiching with the lid member 3. The support member 8 is fitted with a shaft 3c provided on the lid member 3 and can be moved back and forth in the loading direction of the film cartridge by the action of the coil spring 9.

The tripod screw hole 3b is not only provided at the position closer to the rotary shaft hole 3a (hinge portion) side, but also as shown in FIGS. 1 and 2, the photographing optical axis (camera center).
It is provided at a position closer to 10. As a result, the load applied to the rotary shaft hole 3a (hinge portion) due to the torsion during the attachment of the tripod screw is reduced, the deformation of the lid member 3 is prevented, and the durability of the hinge portion is improved.

The features of the configuration in the above embodiment are as follows.
There are the following three points.

The first point is that the tripod screw hole 3b is provided at a rear surface position of the lid member 3 other than the position at which the support member 8 is provided.

Therefore, since the position where the tripod screw hole 3b is provided is displaced from the position where the support member 8 is provided, the wall thickness of the lid member 3 can be reduced. More specifically,
By forcibly providing the tripod screw hole at the center of the lid member 3, the lid member 3 does not become thick and the screw engagement margin cannot be removed, and the extra space in the lid member 3 is eliminated. By providing the tripod screw hole 3b by utilizing, it is possible to obtain the tripod screw hole 3b having a sufficient screw engagement margin even though the lid member 3 is thin. This contributes to the miniaturization of the camera.

Further, since the lid member 3 is provided with the supporting member 8 for supporting the end surface of the spool in the film cartridge of the loaded film cartridge (not shown), the loaded film is loaded as in the previous application. The position of the cartridge in the cartridge chamber 1a can be accurately set, and the film sent out from the film cartridge is reliably fed into the camera.

Secondly, the tripod screw hole 3b is provided on the back side of the lid member 3 which is displaced from the position where the support member 8 is provided as described above.
The point is that the lid member 3 is provided near the rotary shaft hole 3a (hinge portion).

Therefore, when the tripod screw is screwed into the tripod screw hole 3b provided in the lid member 3, even if the screwing is completed, even if the tripod screw is further strongly screwed, the center of rotation of the tripod is set. It is possible to reduce the load applied to the hinge portion and prevent the lid member 3 from being easily damaged.

Thirdly, the tripod screw hole 3b is provided near the rotary shaft hole 3a (hinge portion) of the lid member 3 as described above. The point is that the position is as close to the optical axis 10 side as possible.

Therefore, since the distance from the tripod (relative to the static pressure point) can be shortened against static pressure from above the camera, damage to the tripod screw hole 3b with respect to the static pressure, that is, It is possible to reduce deformation and damage of the lid member 3. Furthermore, the weight balance is improved when the camera is attached to a tripod, and the camera body 1 protrudes from the tripod platform.
The amount of protrusion of the is also almost equal.

The correspondence relationship between each configuration of the above embodiment and each configuration of the present invention is already clear because the respective means names are the same, but the present invention is based on these embodiments. It is needless to say that the structure is not limited, and any structure may be used as long as the function described in the claims or the function of the embodiment can be achieved.

(Modification) In the above embodiment, the support member 8 for supporting the film cartridge is a separate member from the lid member 3, but it may be integrated.

Further, the lid member 3 in the above embodiment.
As shown in FIGS. 1 and 2, the hinge portion of is configured to be provided on the center side of the bottom surface of the camera, but is not limited to this, and is on the end surface side of the bottom surface of the camera (opposite to FIG. 1). Even with the structure provided, the effect of the second point described above, that is, when the tripod screw is screwed into the tripod screw hole 3b provided in the lid member 3, even if the screwing is completed, the screw is further tightened. In this case, it is possible to reduce the load applied to the hinge portion, which is the center of rotation of the tripod, and the lid member 3 is easily damaged.

Although the present invention is intended for a camera, the present invention is not limited to this. The camera has a loading chamber into which a load is inserted and a lid member thereof, and is fixed to a tripod or the like. Any structure having a screw hole can be similarly applied.

[0035]

As described above, according to the present invention,
Reduce the wall thickness of the lid member for opening and closing the cartridge chamber,
The miniaturization of the camera can be achieved.

Further, according to the present invention, when the tripod screw is screwed into the tripod screw hole, even if an unnecessarily large screwing force is applied, the load applied to the hinge portion, which is the center of rotation of the tripod, is reduced, The damage to the lid member due to static pressure from above the camera can be reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a main part of a camera according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a camera according to an embodiment of the present invention as viewed from the bottom surface.

[Explanation of symbols]

 1 Camera Main Body 1a Cartridge Chamber 3 Lid Member 3a Rotation Shaft Hole (Hinge Part) 3b Tripod Screw Hole 8 Supporting Member 10 Photographic Optical Axis (Center of Camera)

Claims (4)

[Claims] 1. A cartridge chamber in which a film cartridge is loaded in its longitudinal direction, a lid member for opening and closing the cartridge chamber, and a support member provided on the lid member for supporting a spool end surface in the film cartridge. When,
A camera provided with a tripod screw hole formed integrally with the lid member, wherein the tripod screw hole is provided on a rear surface side of the lid member other than a position where the support member is provided. 2. The position of the tripod screw hole on the lid member is between the hinge portion, which is the center of rotation of the lid member, and the rear surface position of the support member. camera. 3. The camera according to claim 1, wherein the position of the tripod screw hole on the lid member is closer to the photographing optical axis than the rear surface of the support member. 4. A hinge part, which is 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 the camera, and is a tripod on the lid member. The camera according to claim 1, wherein the position of the screw hole is between the hinge portion and the rear surface position of the support member.