JPH0895134A - Rear cover hinge structure of camera - Google Patents

Abstract

PURPOSE: To make a camera compact and to eliminate the problems of manufacturing and designing by providing a stopper on a part of a hinge member as a separated body, a supporting part on a camera main body and a regulating part abutted on the stopper. CONSTITUTION: Metallic hinge members 13 are fixed in two upper and lower places of a rear cover main body 10 and a rear cover 2 is freely turnably supported by the camera main body 3 through the hinge members 13. Moreover, the hinge part 13a of the hinge member 13 is located inside one end part 10a of the rear cover main body 10 and the projected stopper 14 is integrally formed in the vicinity of the end part of the rear cover main body 10. Further, a spool chamber cover 32 in the camera main body 3 is integrally formed with a supporting part 33 freely turnably supporting the hinge member 13 of the rear cover 2. Then, on the surface of the spool chamber cover 32 of the camera main body 3 in the vicinity of the supporting part 33, the regulating part 32a on which the stopper 14 of the hinge member 13 can be abutted is provided to regulate the turning of a specific amount or more by the abutting of the stopper 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera back lid hinge structure for rotatably attaching a back lid to a camera body.

[0002]

2. Description of the Related Art In a conventional camera back cover hinge structure, when the back cover is made of plastic, a hinge portion is integrally formed on the back cover and is rotatably attached to the camera body and rotated in the opening direction. Normally, the end of the camera body is brought into contact with the surface of the back cover that has been moved to regulate the maximum opening of the back cover.

Further, in the case where the back cover is formed of a metal plate due to a demand for compactness and the like, there is known a technique of forming a hinge portion by curling at an end portion of the back cover.

[0004]

However, in the case where the hinge portion is integrally provided at the end portion of the metal plate as the back lid hinge structure as described above, the camera body is brought into contact with the surface portion to regulate the opening degree. If this is done, there is a problem in that the contact portion of the back cover is scratched.

Further, since the hinge portion of the back lid is formed in the extension portion of the back lid, the support portion for rotatably supporting the harmful hinge portion on the camera body projects to the front surface portion of the camera. Therefore, it is not possible to satisfy the design requirement that the surface of the camera has an uneven surface and the surface is smooth, and the hinge part is visible from the outside. It becomes an obstacle when raising,
Curling of the back cover also has a problem that it is difficult to form a complicated shape and the manufacturing becomes complicated.

In this way, the formation of the back cover by the metal plate is
There are difficulties in terms of manufacturing and design, which are obstacles to the downsizing of cameras.

Therefore, the present invention has been made in view of the above circumstances, and a manufacturing method and a design are performed while a structure in which a back cover made of a metal plate is rotatably attached to a camera body and an opening degree is regulated is made compact. SUMMARY OF THE INVENTION An object of the present invention is to provide a back cover hinge structure for a camera that solves the above problems.

[0008]

In the camera back cover hinge structure of the present invention, when the back cover is rotatably attached to the camera body, the hinge member is fixed to the inner surface of the metal plate back cover body, and While a protrusion-shaped stopper is provided on a part of the hinge member, a supporting portion for rotatably supporting the hinge member is formed on the camera body, and the camera body is brought into contact with the stopper to open the back cover to the maximum extent. It is formed by forming a regulation part for regulating the degree.

[0009]

According to the above structure, by attaching a separate hinge member to the back lid body made of a metal plate and supporting the hinge member on the support portion of the camera body, the back lid can be rotated around the camera body. When the back cover is opened, a stopper provided in a protruding shape on a part of the hinge member comes into contact with the restriction part of the camera body to restrict the maximum opening of the back cover. Since the back lid main body and the hinge member are separate bodies, the back lid main body can be processed more easily than the case where the hinge portion is integrally formed with the back lid by curling, and the back lid main body and the hinge member are assembled in the manufacturing process. Even if the number of processes is increased, it will be advantageous in terms of cost, and it will be possible to provide a support part that supports the hinge part in the camera body without forming a protrusion on the surface of the camera, satisfying design requirements and downsizing. The commercial value It can be carried out while securing.

Further, the hinge member is fixed to the inner surface of the back cover main body, and the supporting member of the hinge member and the camera main body is shielded by the back cover main body. Combined with the fact that smoothing is achieved, a surface shape that is even more excellent in design can be obtained.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of an essential part of a camera having a back cover hinge structure according to an embodiment, FIG. 2 is an exploded perspective view of an essential part of the camera, and FIG. 3 is a sectional view of an essential part of the camera with a back cover opened.

The back cover 2 in the camera 1 of the present embodiment includes a back cover body 10 made of a metal plate, a holding plate 11 for holding electronic circuit parts such as a date module (not shown), and a back side of a film (not shown). And a metal hinge member 13 at two upper and lower positions on the inner surface of the back cover body 10.
Is fixed and the back cover 2 is rotatably supported by the camera body 3 by the hinge member 13.

The back cover main body 10 is formed by pressing a metal plate to form a rear cover of the camera 1. The left and right ends of the vertical plate are curved, and the upper and lower sides of the vertical plate are curved. The lower plate constitutes a part of the bottom cover of the camera 1 (see FIG. 2).

Further, the hinge member 13 is provided in two upper and lower parts, and has a hinge portion having an axial hole 13b.
A fixed portion 13c extending inward from the back cover main body 10 is connected to the fixed portion 13c, and the fixed portion 13c is attached to the mounting portion 10 of the back cover main body 10.
It is fixed to b with set screw 17. Further, a positioning protrusion 13d is formed on the fixed portion 13c of the hinge member 13, and the protrusion 13d is fixed in a state of being fitted in the positioning hole of the mounting portion 10b of the back cover body 10.

The hinge portion 13a of the hinge member 13 is located inside one end 10a of the back cover body 10 and is integrally formed with a stopper 14 projecting near the end portion of the back cover body 10. The one end 10a of the back lid body 10 is provided in an arc shape centered on the shaft hole 13b of the hinge member 13.

The holding plate 11 for supporting electronic circuit components installed inside the back cover 2 is fixed to the mounting portion 10b of the back cover body 10 by fastening a set screw 18 to the back cover body.
It is fixed to the inner surface of 10. A flexible wiring board 19 (see FIG. 2) for the electronic circuit component is extended between the upper and lower hinge members 13 on the side of the holding plate 11, and is connected to the electronic circuit on the camera body 3 side. A nameplate 20 is provided on the back surface of the back cover 2 so as to cover the mounting portion 10b.
17, 18, etc. are hidden.

The pressure plate 12 is provided in a substantially rectangular shape,
The holding plate 11 is supported so as to be slightly movable in the optical axis direction, and the film is biased toward the camera body 3 by a pressure plate spring (not shown).

On the other hand, the camera body 3 is made of plastic and has a cylindrical portion 3a for holding a lens barrel having a taking lens (not shown) at its center, and a flat plate portion 3b around the cylindrical portion 3a is formed as an aperture. A substantially cylindrical cartridge chamber cover 31 forming a cartridge chamber is connected to one end of the camera body 3, and a substantially cylindrical spool chamber cover 32 forming a spool chamber is connected to the other end. Has been done.
A cartridge (not shown) containing a roll film is loaded inside the cartridge chamber cover 31, and a spool 21 having a built-in winding motor is installed inside the spool chamber cover 32 to wind the roll film.

The spool chamber cover 32 of the camera body 3 is integrally formed with a support portion 33 for rotatably supporting the hinge member 13 of the back cover 2. That is, the support portions 33 are vertically provided so as to project laterally on the outer surface of the spool chamber cover 32 arranged at the end portion on the back side of the camera body 3, and the upper and lower support portions 33 are vertically arranged. A support hole 33a penetrating in the direction is formed.

Further, the camera body 3 near the supporting portion 33.
On the surface of the spool chamber cover 32, there is provided a restricting portion 32a with which the stopper 14 of the hinge member 13 can come into contact. The restricting portion 32a comes into contact with the stopper 14 and restricts further rotation. The contact restriction position and angle are set in correspondence with the shape and position of the stopper 14 at the maximum opening of the back cover 2.

The upper and lower support portions of the camera body 3
The hinge member 13 of the back cover 2 is disposed above and below the 33, and the pivot pin 15 is inserted through the shaft hole 13b and the support hole 33a of the hinge member 13. Two
Is rotatably supported.

A front cover 23 (see FIG. 1) is provided on the outside of the front and side of the camera body 3, and the rear end of the side wall of the front cover 23 is the hinge portion 13.
facing a. The back cover body in the closed state with the end of the front cover 23
A gap for rotating the arc end 10a and for moving the stopper 14 of the hinge member 13 is formed between the arc end 10a of 10 and the light shielding member 24 that minimizes this gap. is set up. The light shielding member 24 is fixed to the spool chamber cover 32 of the camera body 3, and is a hinge portion.
The surface opposite to 13a is formed as an arc surface leaving the arc end portion 10a of the back cover 2 and the stopper 14 for movement, and the side surface is formed so as to be flush with the surface of the front cover 23.

Explaining the operation of the hinge structure as described above, when the back cover 2 is closed and the back surface of the camera body 3 is closed as shown in FIG. Is located inward of the surface of the inner surface of the cover and has small surface irregularities, and is in a position where it cannot be seen from the outside by being shielded by the back cover main body 10 and the front cover 23, and the gap is minimized by installing the light shielding member 24. ing.

When the back cover 2 is opened by operating a lock mechanism (not shown) for loading and unloading the cartridge from the closed state, the back cover 2 is pivoted about the pivot pin 15 by the hinge member 13. Rotate in the opening direction. At that time, the stopper 14 of the hinge member 13 and the back cover main body
The arcuate end 10a of 10 is rotated so as to enter the inside through a gap with the light shielding member 24.

When the state shown in FIG. 3 is the most opened,
The stopper 14 of the hinge member 13 rotates to come into contact with the restriction portion 32a of the spool chamber cover 32 of the camera body 3, and further rotation is restricted. Since the stopper 14 having high strength and the camera body 32 come into contact with each other, the limit position is surely regulated.

The camera 1 of the present example is for loading a cartridge containing a roll film by a drop-in load method, and when loading or unloading a normal cartridge, the back cover 2 is fully opened as shown in FIG. A locking mechanism that stops at an opening of about 30 ° is not provided.

[0027]

As described above, according to the present invention, a separate hinge member is fixed to a back lid main body made of a metal plate, and a protruding stopper is provided on a part of the hinge member, while the camera main body is provided. Since the hinge member is a separate body, the back cover main body can be easily processed by providing the support portion on the camera and the regulating portion that comes into contact with the stopper, and by forming the support portion that supports the hinge member, the camera is formed. It is possible to realize compactness by adopting a metal plate back cover while forming a camera which has a high commercial value in terms of design because the hinge structure cannot be seen from the outside and the hinge structure is not visible from the outside.

[Brief description of drawings]

FIG. 1 is a cross-sectional plan view of essential parts of a camera having a back lid hinge structure according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of main parts of the camera.

FIG. 3 is a cross-sectional plan view of essential parts with the back cover opened.

[Explanation of symbols]

 1 camera 2 back lid 3 camera body 10 back lid body 13 hinge member 13a hinge portion 13b shaft hole 14 stopper 15 pivot pin 23 front cover 24 light-shielding member 32 spool chamber cover 32a regulating portion 33 support portion 33a support hole

Claims (1)

[Claims] 1. A back lid hinge structure for a camera, wherein a back lid is rotatably attached to a camera body, wherein a hinge member is fixed to an inner surface of the back lid body made of a metal plate and a part of the hinge member is provided. While providing a stopper in the form of a protrusion, a support portion for rotatably supporting the hinge member is formed on the camera body, and a regulating portion for abutting the stopper on the camera body and regulating the maximum opening degree of the back cover is provided. The back cover hinge structure of the camera characterized by being formed.