Waterproof case for camera and waterproof structure for camera using the waterproof case

Abstract

The invention provides a waterproof structure for a camera capable of easily rotating a zoom ring of a lens barrel. In a waterproof case for the camera, a case body which accommodates a lens barrel includes a fixed cylindrical member detachably attached to a camera body, a rotating cylindrical member relatively rotatably connected to a front opening of the fixed cylindrical member, and a movable cylindrical member which is accommodated in the rotating cylindrical member and which can reciprocate. A first seal is provided on a bonding portion of the fixed cylindrical member and the camera body, a second seal is provided on a bonding portion of the fixed cylindrical member and the rotating cylindrical member, and a third seal is provided on a bonding portion between the rotating cylindrical member and the movable cylindrical member. An engaging surface which contacts with an outer surface of the zoom ring of the lens barrel is provided on an inner surface of the rotating cylindrical member. A cam mechanism is arranged between the rotating cylindrical member and the movable cylindrical member for converting rotation of the rotating cylindrical member into the reciprocation motion of the movable cylindrical member.

Description

technical field [0001] The present invention relates to a waterproof structure of a camera in which a lens barrel is detachably attached to a camera body, such as a camera equipped with a retractable lens barrel, a single-lens reflex camera, or a mirrorless interchangeable lens camera. Background technique [0002] Conventionally, in order to achieve waterproof or drip-proof (hereinafter simply referred to as waterproof) of such a camera, it has been proposed to form a waterproof structure for the frame constituting the camera body and a waterproof structure for the lens barrel (for example, Patent Document 1). [0003] However, in such a camera, although it is possible to take pictures while changing the plurality of lens barrels according to the shooting scene, as the above-mentioned plurality of lens barrels, it is necessary to use a special lens barrel with a waterproof structure, so that there is a lens The lack of versatility of the lens barrel. [0004] Therefore, it...

AI Technical Summary

Problems solved by technology

[0011] However, for the waterproof structure of the camera formed by the above-mentioned rubber waterproof case, since the shape or size of the camera body is different in each camera model, it is necessary to prepare a waterproof case with a different shape or size for each model. body

In addition, in the case of a camera whose lens barrel is detachable and whose zooming operation is performed by rotating the zoom ring, it is difficult to rotate the zoom ring from above the waterproof case, and there are cases where the application is limited to the camera body. Problems with the camera with the zoom operation button

Images