JPH056981U - Underwater camera waterproof case - Google Patents

Abstract

(57) [Abstract] [Purpose] To make the waterproof case for accommodating the CCD camera smaller and make it easier to adjust the focus. [Structure] A main body case 2 that draws out a cord B of a CCD camera A to a rear end side in a watertight state, and a rear end side of the main body case 2 is externally fitted so as to be watertight, and is attached via a screw mechanism 3. The front end is closed by a transparent plate 17 so as to be watertight, and includes a rotating case 4 that houses the CCD camera A therein. The rotating case 4 and the focus ring D of the CCD camera A are rotated in the rotating direction via an O-ring 21. The screw mechanism 3 is connected to the focus ring D in the CCD camera A.
It is set to the same pitch as the lead screw of. When the rotating case 4 is rotated, the focus ring D is also rotated together, and the rotating case 4 and the focus ring D are also integrally moved in the axial direction by the screw mechanism 3, so that focusing can be easily and efficiently performed. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a waterproof case that allows a CCD camera to be used as an underwater camera.

[0002]

[Prior Art]

 When a CCD camera is used to configure an underwater camera for shooting underwater, it is necessary to put the CCD camera in a waterproof case.

As the above-mentioned waterproof case, not only waterproofing but also functions such as small size, wide field of view, and ability to focus from the outside are required, but the conventional waterproofing case focuses on the waterproof function for the CCD camera. It has a structure that

[0004]

[Problems to be solved by the device]

 For this reason, the conventional waterproof case has a problem that the outer diameter is increased in order to widen the field of view and the operation mechanism for focusing is also complicated in structure.

In order to solve the above problems, it is an object of the present invention to provide a waterproof case for an underwater camera that is small in size, has a wide field of view, and has a simple focusing mechanism structure.

[0006]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention is a main body case in which a cord of a CCD camera is formed in a watertight manner toward the rear end side and a holder for fixing the CCD camera is provided inside the front end side. It is formed into a cylindrical shape for accommodating a CCD camera inside, the front end is watertightly sealed with a transparent plate, the rear end side is externally fitted to the front end side of the main body case, and the screw mechanism is screwed. An O-ring that consists of a rotating case that is attached together, and that elastically fits into the focus ring of the CCD camera in the circumferential groove provided on the inner peripheral surface of the rotating case and that transmits the rotation of the rotating case to the focus ring. And a screw mechanism provided so as to be screwed into the main body case and the rotation case is set at the same pitch as the feed screw of the focus ring in the CCD camera.

[0007]

[Action]

 The CCD camera can be stored in a waterproof case by storing the CCD camera in the rotating case and screwing the rotating case into the main body case with the cord pulled out from the main body case. When the O-ring is elastically fitted onto the focusing ring of the CCD camera and the rotation case is rotated from the outside, the focus ring also rotates together with the focus ring.

The focus ring rotates to move in the axial direction for focusing, but since the feed screw of the focus ring and the screw mechanism provided on the main body case and the rotary case are formed at the same pitch, the focus ring rotates. Axial movement of the case and focus ring are synchronized, and focusing can be done without any problems.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in the figure, the waterproof case 1 is composed of a main body case 2 and a rotary case 4 connected to the tip of the main body case 2 via a screw mechanism 3. The main body case 2 and the rotary case 4 are made of stainless steel. It is formed using a rust preventive material such as.

The body case 2 is formed in a cylindrical shape through which the cord B of the CCD camera A penetrates, and inside thereof, the camera holder 5 is not moved to the tip end side at the tip end side position by the step portion 6. The spacer cylinder 9 and the ring-shaped rubber bush 10 are provided between the camera holder 5 and the ring-shaped tightening nut 8 that is assembled in a supported state and screwed into the rear end screw hole 7 of the body case 2. Pressing rings 11 and 12 are incorporated in front of and behind the rubber bush 10.

The cord B of the CCD camera A penetrates through the body case 2 and fits into the rubber bush 10. The rubber bush 10 is compressed by screwing the tightening nut 8, and the cord B is tightened by the reduced diameter. The drawn-out portion of the cord B is kept watertight.

The camera holder 5 is formed in a ring shape that is externally fitted and screwed to a connector C that connects the CCD camera A and the cord B, and a protrusion 13 provided on the outer periphery of the front surface is formed on the inner peripheral surface of the tip portion of the main body case 2. By fitting in the formed groove 14, it is in a rotation stop state.

The rotating case 4 is formed in a cylindrical shape having an inner diameter in which the CCD camera A can be exactly housed, the rear end side of which is externally fitted to the front half portion of the main body case 2 and the small diameter portion 15 provided at the front end portion. A tip screw 16 is externally fitted and screwed, and a circular transparent plate 17 housed inside the tip of the rotating case 4 is fixed by screwing the tip screw 16.

The transparent plate 17 has a small protrusion 18 provided on the inner circumference of the rotating case 4 and a claw 16 a provided on the inner circumference of the tip of the tip screw 16, and the outer circumference of the transparent plate 17 is clamped. An O-ring 19 is incorporated into an annular groove provided in the, the mounting portion of the transparent plate 17 is made watertight, and the tip of the rotating case 4 is sealed.

As described above, when the O-ring 19 is attached to the outer periphery of the transparent plate 17, the rotating case 4 can be a straight cylinder, and the inner diameter can be maximized to widen the field of view and the wall thickness can be increased. There is an advantage that the outer diameter can be reduced by making it thinner.

An annular peripheral groove 20 is provided on the inner peripheral surface of the rotating case 4 at a position facing the focus ring D of the CCD camera A, and an O-ring that is elastically fitted to the focus ring D in the peripheral groove 20. 21 is incorporated, and the O-ring 21 connects the rotary case 4 and the focus ring D so as to integrally move in the rotational direction.

As described above, when the rotating case 4 and the focus ring D are connected in the rotational direction by the O-ring 21 incorporated in the circumferential groove 20, the focus ring D is directly rotated by the rotating case 4 to focus. In addition, it is not necessary to provide any member for focusing on the outer periphery of the rotating case 4, and the rotating case 4 can be thinned within the allowable range of strength, so that the outer diameter can be reduced.

As shown in FIG. 2, the screw mechanism 3 provided in the fitting portion of the main body case 2 and the rotating case 4 has a male screw 22 formed on the outer peripheral surface of the main body case 4 and an inner peripheral surface of the rotating case 4. It is composed of the above-mentioned male screw 22 and a female screw 23 formed so as to be screwed. When the rotating case 4 is rotated with respect to the main body case 2, the screw mechanism 3 causes axial movement of the rotating case 4.

That is, focusing in the CCD camera A is performed by rotating the focus ring D by converting the rotation of the focus ring D into axial movement with a screw and moving the lens. It is necessary to synchronize with the axial movement of the ring D, and therefore the pitch of the male screw 22 and the female screw 23 in the screw mechanism 3 is set to the same pitch as the feed screw of the focus ring D.

An O-ring 25 is incorporated in the groove 24 provided on the outer periphery of the intermediate portion of the main body case 2, and the rear end side of the rotary case 4 is externally fitted to the O-ring 25, so that the main body case 2 and the rotary case 4 are fitted together. The joint is kept watertight.

The waterproof case of the present invention is configured as described above, and the CCD camera A and the cord B are connected by the connector C fixed to the camera holder 5 in the main body case 2, and the CCD camera A is connected to the main body case 2. It is housed in a rotating case 4 connected by screwing, the cord B is pulled out from the rear end of the main body case 2 in a watertight manner, and the tip of the rotating case 4 is sealed by a transparent plate 17, so that the inner circumference of the rotating case 4 is The O-ring 21 built in is fitted on the focus ring D.

Therefore, as shown in FIG. 1, the CCD camera A is housed in a waterproof case 1 in a watertight manner so that photographing in water can be performed without any trouble, and when the rotating case 4 is rotated, the O-ring 21 is turned on. Through this, the focus ring D rotates integrally, and the focus can be adjusted during shooting.

Since the screw mechanism 3 for screw-connecting the main body case 2 and the rotary case 4 is set at the same pitch as the feed screw of the focus ring D in the CCD camera A, the focus ring D and the rotary case are adjusted during focus adjustment. 4 moves integrally in the axial direction, and there is no axial slip between the O-ring 21 and the focus ring D, and the focus ring D 1 can be smoothly rotated.

[0025]

【effect】

 As described above, according to the present invention, since the O-ring that connects the rotary case and the focus ring in the rotational direction is incorporated in the inner circumference of the rotary case that houses the CCD camera, the rotary case is an operation unit for direct focusing. Since there is no protruding portion to the outside, both the inner and outer contours can be made straight, the outer contour can be downsized, and the field of view can be widened.

Further, since the screw mechanism for screwing the main body case and the rotary case is set to the same pitch as the feed screw of the focus ring in the CCD camera, the focus ring and the rotary case move integrally in the axial direction during focus adjustment. Therefore, the O-ring and the focus ring do not slip in the axial direction, and the focus can be smoothly adjusted by rotating the focus ring.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a usage state of a waterproof case according to the present invention.

FIG. 2 is an exploded vertical sectional view showing the structure of the screw mechanism of the above.

[Explanation of symbols]

 1 Waterproof Case 2 Body Case 3 Screw Mechanism 4 Rotating Case 5 Camera Holder 10 Rubber Bushing 17 Transparent Plate 20 Circumferential Groove 21, 25 O-ring 22 Male Thread 23 Female Thread

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yuzo Nakata 4-2-20 Motomachi-dori, Chuo-ku, Kobe Inside Akabane Shoten Co., Ltd. (72) Creator Masanori Yamamoto 1-1690, 2-1069, Kiyoki, Sayama-shi, Osaka ( 72) Creator Takanobu Hinaga 5-7-14 Hiranohonmachi, Hirano-ku, Osaka

Claims (1)

[Claims for utility model registration] [Claim 1] A main body case which is formed in a tubular shape for drawing out the cord of the CCD camera to the rear end side in a watertight manner, and has a holder for fixing the CCD camera inside the front end side, It is formed in a cylindrical shape to accommodate the CCD camera inside, the front end is watertightly sealed with a transparent plate, the rear end side is fitted to the front end side of the main body case so as to be watertight, and the screw mechanism is screwed. And a rotation case that is attached to the focus ring of the CCD camera in the circumferential groove provided on the inner peripheral surface of the rotation case, and that incorporates an O-ring that transmits the rotation of the rotation case to the focus ring. A waterproof case for an underwater camera in which a screw mechanism provided so as to be screwed into the main body case and the rotating case is set to have the same pitch as a feed screw of a focus ring in a CCD camera.