JPH08201902A - Camera tripod mounting structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a tripod mounting structure for a camera, which is capable of preventing deformation of a support plate due to a male screw for mounting a tripod, and which is advantageous in arranging a film rail member at a regular position. A camera provided with a support plate 4 disposed on a bottom surface of a camera body 2 and having a female screw 24 for mounting a tripod, wherein a front and rear sides are surrounded by a slit 22 at a portion including a female screw 24 portion and a peripheral portion thereof. An elongated tripod mounting piece 20 is provided. The tripod mounting piece 20 is flexible with respect to the other four support plates, and has a strength such that the male screw connected to the female screw 24 supports the camera on the tripod. Has been formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera tripod mounting structure.

[0002]

2. Description of the Related Art In many cameras, a support plate is provided on the bottom surface of a camera body, and a female screw for attaching a tripod is formed on the support plate. A male screw is screwed onto the female screw from the platform side. The camera can be mounted on the tripod head by being tightened. On the other hand, in the camera, a mirror box block and a film rail member are attached to the support plate to form a main body block, and a front cover and a rear cover are attached to the main body block to form a camera.
The position of the film rail member is required to be high because the film is positioned at a position where an image is formed.

[0003]

However, if the male screw for attaching the tripod is excessively tightened to the female screw, a tensile force acts on the female screw portion of the support plate, and the support plate is distorted. As a result, the supporting plate itself is deformed, the film rail member attached to the supporting plate is slightly tilted, and the film rail member is displaced from the normal position. As a result, the back dimension is changed and the focal position is displaced. The present invention has been devised in view of the above circumstances, and an object of the present invention is to prevent deformation of a support plate due to a male screw for attaching a tripod, and to advantageously arrange a film rail member at a regular position. It is to provide a tripod mounting structure for a camera.

[0004]

In order to achieve the above object, the present invention provides a camera provided with a support plate formed on a bottom surface of a camera body and having a female screw for attaching a tripod, wherein the female screw portion and its surroundings are provided. A tripod mounting piece is provided at a portion including the portion, the tripod mounting piece is flexible with respect to another supporting plate portion, and has strength such that the male screw is coupled to the female screw to support the camera on the tripod. It is characterized by being formed. Further, the present invention is characterized in that the tripod attachment piece is constituted by a region surrounded by a groove formed in the support plate. Further, the present invention is characterized in that the groove portion is a slit.

Further, according to the present invention, in a camera having a support plate arranged on the bottom surface of a camera body, a female screw member having a female screw for mounting a tripod is provided, and the female screw member is rotatable with respect to the support plate. And a spring that provides a frictional force between the female screw member and the support plate is provided between the female screw member and the support plate, and the spring supports the camera on a tripod by the male screw coupled to the female screw. In addition, when the tightening force of the male screw becomes a predetermined value or more, the strength is set so as to rotate the female screw member integrally with the male screw. Also, the present invention
A female threaded member is a columnar member formed with a female thread and inserted into a hole of a support plate, and a flange formed on the outer surface of the support plate at the tip of the columnar member and having an outer diameter larger than the hole of the support plate. And the spring is a coil spring that is disposed between the inner surface of the support plate and the rear end of the columnar member and urges the flange in a direction to abut the outer surface of the support plate. Is characterized by.

[0006]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a sectional side view of a main part of a camera according to the first embodiment, and FIG. 2 is a bottom view of the same. Reference numeral 2 is a main body block, and a front cover and a rear cover are attached to the main body block 2 to form a camera. The main body block 2 includes a support plate 4, a mirror box block 8 mounted on the front portion of the support plate 4 with a screw 6, a finder 10 mounted on the mirror box block 8, a grip portion 12, and the like. ing. The support plate 4 is made of synthetic resin, and includes a bottom plate portion 14 located at the bottom of the camera and a film rail member 16 standing upright from the rear end of the bottom plate portion 14. The film rail member 16 is integrally provided with a film rail 1602. Is formed in.

A tripod mounting piece 20 is provided at the center of the bottom plate portion 14. The tripod mounting piece 20 is surrounded by a slit 22 notched in the bottom plate portion 14 and formed in an elongated shape in the front-rear direction, and a female screw 24 is formed on the front portion of the tripod mounting piece 20. The rear end portion of the tripod mounting piece 20 is connected to the bottom plate portion 14, the front portion of the tripod mounting piece 20 is configured to be flexible in the thickness direction of the bottom plate portion 14, and the camera is formed by a male screw screwed into the female screw 24. Is formed with the strength to be supported by a tripod platform.

Since the present embodiment is constructed as described above, the camera is supported on the tripod platform by the male screw that is screwed into the female screw 24, and even if the female screw 24 is distorted due to overtightening of the male screw. As shown in FIG. 3, although this distortion affects the tripod mounting piece 20, since it is separated from the other bottom plate portions 14 by the slits 22, it does not affect the other bottom plate portions 14, Therefore,
The bottom plate portion 14 itself is prevented from being deformed, and the film rail member 1
It is possible to solve the problem such as the falling of 6. Also, the slit 2
It is possible to prevent the film rail member 16 from collapsing and the like by a simple structure in which the female screw 24 is formed on the flexible tripod mounting piece 20 provided with 2, and the above effect can be achieved without increasing the cost. In the embodiment, the case where the tripod mounting piece 20 is defined by the slit 22 has been described, but a bottomed groove may be provided and the tripod mounting piece 20 may be defined by a bottomed groove instead of the slit 22. Good.

Next, a second embodiment will be described with reference to FIGS. 4 and 5. FIG. 4 is a sectional side view of a main part of the camera of the second embodiment, and FIG. 5 is a bottom view of the same. Body block 3
2 includes a support plate 34, a mirror box block 38 attached to the front portion of the support plate 34 with screws 36, and a film rail member 42 attached to the rear portion of the support plate 34 with screws 40.
And a finder 44 mounted on the mirror box block 38, a grip portion 46, and the like.

The support plate 34 is made of metal and is located at the bottom of the camera. The support plate 34 and the bottom plate portion 4202 of the film rail member 42 form the bottom surface of the camera.
A tripod mounting piece 48 is provided at the center of the support plate 34. The tripod mounting piece 48 is elongated in the front-rear direction by the slit 50, and a female screw 52 is formed on the front portion of the tripod mounting piece 48. Tripod attachment piece 48
The rear end portion is connected to the support plate 34, the front portion is configured to be flexible in the thickness direction of the support plate 34, and the female screw 52
The camera is formed with the strength to be supported by the tripod platform by the male screw that is screwed into the. The female screw 52 is a support plate 34.
It is formed on a female screw member 54 which is separate from, and is attached to the tripod mounting piece 48 by caulking or the like, and the rear end portion of the tripod mounting piece 48 is formed in a narrow portion 4802 for easy flexibility. .

According to the second embodiment as described above, even if the camera is supported on the tripod head by the male screw screwed to the female screw 52 and the male screw is over-tightened, the female screw 52 is distorted. Although it affects the tripod attachment piece 48, it does not affect the other bottom plate portion 4202, and therefore the support plate 34 and the film rail member 42 are not affected.
Problems such as falling down can be solved. Also, the slit 50
With the simple structure in which the female screw 52 is formed on the flexible tripod mounting piece 48, the film rail member 42 can be prevented from falling down, and the above effect can be achieved without increasing the cost.

Next, a third embodiment will be described with reference to FIG. FIG. 6 is a sectional front view of a main part of a camera tripod mounting structure. In FIG. 6, 62 is the support plates 4, 3
4 is a support plate disposed on the bottom surface of the camera similarly to 4, and the tripod mounting structure of the camera has a female screw member 64 and a spring 6 that applies a frictional force between the female screw member 64 and the support plate 62.
6 and a flange 68 and the like. The female screw member 64 is formed in a cylindrical shape, and a female screw 70 into which a male screw on a tripod side is screwed is formed on a lower end surface thereof, a large diameter portion 6402 is formed on an upper end portion, and a small diameter portion 6404 is formed on a lower end portion.
Is formed, and a body portion 6406 having a uniform diameter is formed between the large diameter portion 6402 and the small diameter portion 6404. The support plate 62
A hole 6202 is formed at a size larger than the body portion 6406 and smaller than the flange 68. The female screw member 64 is disposed above the support plate 62 with its lower portion positioned in the hole 6202, and the flange 68 is attached to the small diameter portion 6404 on the lower surface side of the support plate 62.

The coil spring 66 has the body portion 6
A large diameter portion 6402 and a hole 6202 are wound around 406.
Is provided over the support plate 62 around the above, and the female screw member 64 is biased upward to bring the flange 68 into contact with the lower surface of the support plate 62. In the coil spring 66, when the male screw is screwed into the female screw 70, the flange 68 has the supporting plate 6
The female screw member 64 is held non-rotatably by abutting on the lower surface of 2, and the camera has the strength to support the camera on the tripod platform by the male screw screwed to the female screw 70 and screwed to the female screw 70. The strength is set so that when the tightening force of the male screw becomes greater than a predetermined value, slippage occurs between the flange 68 and the lower surface of the support plate 62 to rotate the female screw member 64 integrally with the male screw.

According to the third embodiment as well, the camera is supported on the tripod platform by the male screw screwed to the female screw 70, and when the tightening force of the male screw screwed to the female screw 70 becomes a predetermined value or more, Since the female screw member 64 rotates integrally with the male screw, if the male screw is overtightened, the support plate 6
2 does not have a problem such as distortion, and therefore, the problem that the film rail member falls down can be solved. Further, the film rail member can be prevented from falling down with a simple structure using the female screw member 64, the flange 68, and the coil spring 66, and the above effect can be achieved without increasing the cost.

[0015]

As is apparent from the above description, the present invention is
In a camera provided with a support plate disposed on a bottom surface of a camera body and having a female screw for mounting a tripod, a tripod mounting piece is provided at a portion including the female screw portion and a peripheral portion thereof, and the tripod mounting piece is It is formed so as to be flexible with respect to the support plate portion, and strong enough to support the camera on the tripod by the male screw coupled to the female screw. Further, according to the present invention, in a camera including a support plate disposed on a bottom surface of a camera body, a female screw member having a female screw for attaching a tripod is provided, and the female screw member is rotatably arranged with respect to the support plate. However, a spring that provides a frictional force between the female screw member and the support plate is provided between the female screw member and the support plate, and the spring supports the camera on a tripod by the male screw coupled to the female screw, The strength is set so as to rotate the female screw member integrally with the male screw when the tightening force of the male screw exceeds a predetermined value. Therefore, it is possible to prevent the support plate from being deformed due to excessive tightening of the male screw for attaching the tripod, which is advantageous in arranging the film rail member at the regular position.

[Brief description of drawings]

FIG. 1 is a cross-sectional side view of essential parts of a camera according to a first embodiment.

FIG. 2 is a bottom view of the camera of the first embodiment.

FIG. 3 is a cross-sectional side view of a main part of a tripod mounting piece portion of the camera of the first embodiment.

FIG. 4 is a side sectional view of a main part of a camera according to a second embodiment.

FIG. 5 is a bottom view of the camera of the second embodiment.

FIG. 6 is a cross-sectional side view of essential parts of a tripod mounting structure portion of a camera of a third embodiment.

[Explanation of symbols]

 2,32 Main body block 4,34,62 Support plate 8,38 Mirror box block 14 Bottom plate part 16,42 Film rail member 20,48 Tripod mounting piece 22,50 Slit 24,52,70 Female screw 54,64 Female screw member 66 Spring 68 Flange

Claims (5)

[Claims] 1. A camera provided with a support plate disposed on a bottom surface of a camera body and having a female screw for mounting a tripod, wherein a tripod mounting piece is provided at a portion including the female screw portion and a peripheral portion thereof, The mounting piece is flexible with respect to another supporting plate portion, and is formed to have a strength such that the camera is supported on the tripod by a male screw coupled to the female screw. Construction. 2. The tripod mounting structure for a camera according to claim 1, wherein the tripod mounting piece is constituted by a region surrounded by a groove formed in the support plate. 3. The camera tripod mounting structure according to claim 2, wherein the groove is a slit. 4. A camera including a support plate disposed on the bottom surface of a camera body, wherein a female screw member having a female screw for mounting a tripod is provided, and the female screw member is rotatably disposed with respect to the support plate. A spring that provides a frictional force between the female screw member and the support plate is provided between the female screw member and the support plate, and the spring supports the camera on a tripod by a male screw coupled to the female screw, and A tripod mounting structure for a camera, wherein the strength is set such that the female screw member is rotated integrally with the male screw when the tightening force of the male screw exceeds a predetermined value. 5. The female screw member includes a columnar member formed with a female screw and inserted into a hole of a supporting plate, and an outer diameter larger than the hole of the supporting plate attached to the tip of the cylindrical member on the outer surface of the supporting plate. The spring is a coil spring that is disposed between the inner surface of the support plate and the rear end of the columnar member and urges the flange in the direction of contacting the outer surface of the support plate. The tripod mounting structure for a camera according to claim 4, which is configured.