JPH05188458A - Rear cap opening/closing device for waterproof camera - Google Patents

Abstract

PURPOSE:To enable sure opening of a rear cap of a waterproof camera without using tools, such as screw drivers, by providing coupling means which can forcibly open the rear cap. CONSTITUTION:An operating member 20 is moved to put a locking member 18 in a movable state. The locking member 18 is thereafter moved against the energizing force of a spring 19, by which the coupling of a pawl 9a of a locking lever 9 and a projecting part 18a is released. The locking lever 9 is rotated counter-clockwise around a shaft 10 by the effect of a spring 14. The coupling of a pin 4 and a hook 6 is released when a buckle body 15 is rotated counter-clockwise around a shaft 5. The outer peripheral part of a hook 6 is pressed to the inner side of the pin 4 when the buckle body 15 is conversely rotated clockwise. The outer peripheral part presses the pin 4 this time and opens the rear cap 2 when the buckle body 15 is again rotated counter- clockwise.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof camera back cover opening / closing device used for opening / closing a waterproof camera back cover.

[0002]

2. Description of the Related Art Conventionally, as a back cover opening / closing device for a waterproof camera used for opening / closing a back cover of a waterproof camera, for example, as disclosed in Japanese Utility Model Laid-Open No. 58-98628, a back cover is opened by a buckle. It is known to fix the camera body in a sealed state.

[0003]

However, in such a conventional waterproof camera back cover opening / closing device, even if the buckle is released in order to take out the film after the underwater photographing is completed by the waterproof camera, the back cover is opened. However, there is a problem that it is difficult to open it easily by hand because it is closely attached to the camera body.

Therefore, conventionally, for example, tools such as a screwdriver are prepared in advance, and the back lid is opened using these tools. The present invention has been made to solve the conventional problems, and an object of the present invention is to provide a back cover opening / closing device for a waterproof camera, which can easily and surely open the back cover.

[0005]

According to another aspect of the invention, there is provided a waterproof camera back cover opening / closing device for fixing a back cover of a waterproof camera to a camera body in a hermetically sealed state and forcibly opening the back cover. Is to have.

[0006]

In the waterproof camera back cover opening / closing device of the present invention, when the waterproof camera is used, the back cover of the waterproof camera is hermetically fixed to the camera body by the connecting means, while the film is taken out from the waterproof camera. , The back lid is forcibly opened by the coupling means.

[0007]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows an embodiment of a back lid opening / closing device for a waterproof camera according to the present invention.
The A section is shown.

In FIG. 1, reference numeral 2 indicates a back cover, and reference numeral 3 indicates a camera body die casting. A projecting portion 2a that fits into the camera body die casting 3 is integrally formed at an end of the back cover 2, and the recess 2c formed in the projecting portion 2a has a back cover 2 and the camera body die casting 3 formed therein.
An O-ring 11 is arranged to seal the gap between and.

A pin 4 is fixed to the end of the back cover 2, and a shaft 5 is fixed to the end of the camera body die casting 3. A buckle body 15 is rotatably attached to the shaft 5.

The buckle body 15 has a shaft 8 and a shaft 10.
Is fixedly mounted, and a hook lever 7 is rotatably attached to the shaft 8. A lock lever 9 is rotatably attached to the shaft 10.

A tension spring 13 is hooked between the buckle body 15 and the hook lever 7, and the buckle body 15
On the other hand, the hook lever 7 is biased clockwise in the drawing.

A tension spring 14 is hung between the buckle body 15 and the lock lever 9, and the buckle body 15
On the other hand, the lock lever 9 is biased counterclockwise in the figure.

The hook lever 7 has a bent portion 7a, and a hole 7b is formed in the bent portion 7a. The shaft 16 is inserted through the hole 7b, and the shaft 1
A flange 16a is formed at one end of the plate 6.

At the other end of the shaft 16, a bottom surface portion 6b of the hook 6 is provided.
However, they are fitted with a predetermined gap. Then, a clip 17 is used to prevent the hook 6 from coming off the shaft 16.

The flange 16a of the shaft 16 and the bent portion 7a
A spring 12 is mounted between the shaft and, and the shaft 16 is biased in the arrow B direction. In the figure, reference numeral 18 indicates a lock member, and the lock member 18 is housed in the left-hand grip 21.

On the lock lever 9 side of the lock member 18,
The first convex portion 18a is formed, and the first convex portion 1 is formed.
The claw 9a of the lock lever 9 is locked by 8a. Then, the second convex portion 1 formed on the lock member 18
A spring 19 is housed between 8b and the stepped portion 3a provided on the camera body die casting 3.

The spring 19 biases the lock member 18 in the C direction in the figure. The lock member 18 is the grip 2
The movement in the C direction in the figure is restricted by the restriction portion 21a formed in 1.

Adjacent to the locking member 18, the locking member 1
An operation member 20 having a function of fixing the movement of 8 is arranged. FIG. 3 is an explanatory view showing a portion D of FIG. 2 in an enlarged manner, and in the figure, reference numeral 21 indicates a grip.

Inside the grip 21, a cavity 21b for accommodating the lock member 18 and the operating member 20 is provided.
Are formed. Further, the grip 21 has a cutout portion 2 for escaping the rotation trajectory of the claw 9a of the lock lever 9.
1c is formed.

The lock member 18 is provided with a third convex portion 18c and a concave portion 18d. On the other hand, the operating member 20
The first convex portion 20a, the second convex portion 20d, and the concave portion 20b are formed on the.

Further, the operating member 20 has an elongated hole 20.
c is provided. 1 to 3 described above.
Shows the state in which the back cover 2 is hermetically sealed and the buckle body 15 is locked so as not to accidentally come off.

Hereinafter, a method of operating the above-mentioned waterproof camera back cover opening / closing device will be described in detail. First, in order to open the back cover 2 from the locked state shown in FIGS.
In the direction E in FIG.

As a result, the second convex portion 2 of the operating member 20.
0d is the first recess 21 of the cavity 21b of the grip 21.
It moves from d to the second recess 21e. At a position in the middle of this, the second convex portion 20d is located at F in the figure because of the elongated hole 20c.
Elastically displaced in the direction.

When the operating member 20 moves in the E direction, as shown in FIG. 4, from the position where the first convex portion 20a and the third convex portion 18c of the lock member 18 face each other,
The convex portion 20a and the concave portion 18d of the lock member 18 face each other.

Thereafter, the lock member 18 is moved in the G direction of FIG. 4 against the biasing force of the spring 19 of FIG. As a result, the engagement between the first protrusion 18a of the lock member 18 and the claw 9a of the lock lever 9 is released.

The lock lever 9 includes a spring 14 shown in FIG.
1 rotates in the counterclockwise direction in FIG. 1, contacts the stepped portion 15b of the buckle body 15 and stops. After that, when the buckle body 15 is rotated counterclockwise in FIG. 1, the shaft 16 moves in the B direction by the action of the toggle mechanism of the spring 12 shown in FIG. 1 to move the hook 6 and the bent portion 7.
The contact with a results in the state shown in FIG.

Further, when the buckle body 15 is rotated counterclockwise in FIG. 5, the pin 4 and the hook 6 are disengaged, and the hook lever 7 is rotated clockwise by the action of the spring 13. As shown in FIG. 6, the buckle body 15 comes into contact with the convex portion 15a and stops.

When the buckle body 15 is rotated clockwise from this state, the outer peripheral portion 6a of the hook 6 contacts the inside of the pin 4 as shown in FIG. Then, from this state, when the buckle body 15 is again rotated counterclockwise in FIG. 7, the outer peripheral portion 6a pushes the pin 4 to open the back cover 2 this time.

On the other hand, when closing the back cover 2, first, the hook 6 is locked to the pin 4. This lock is
Press the back cover 2 against the camera body die casting 3 side by hand to
The state shown in FIG. 5 is achieved by rotating the buckle body 15 counterclockwise until the state shown in FIG.

Since the operation of closing the back cover 2 after this may be performed by reversing the procedure for opening the back cover 2 described above, detailed description thereof will be omitted. Thus, in the waterproof camera back cover opening / closing device configured as described above, when the waterproof camera is used, the back cover 2 of the waterproof camera is fixed to the camera body die casting 3 by locking the hook 6 to the pin 2. It is fixed in a hermetically sealed state. On the other hand, when the film is taken out from the waterproof camera, the back cover 2 is forcibly opened by pressing the pin 2 outward by the hook 6, so that the back cover 2 can be easily opened. It can be opened securely.

As a result, the back cover 2 can be opened without using a tool such as a screwdriver.

[0032]

As described above, in the waterproof camera back cover opening / closing device of the present invention, when the waterproof camera is used, the back cover of the waterproof camera is hermetically fixed to the camera body by the connecting means while the waterproof camera is waterproof. When removing the film from the camera, the back cover is forcibly opened by the coupling means,
There is an advantage that the case back can be opened easily and surely.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a waterproof camera back lid opening / closing device of the present invention.

FIG. 2 is a front view showing a waterproof camera provided with the waterproof camera back lid opening / closing device of FIG.

FIG. 3 is an enlarged view showing details of a portion D in FIG.

FIG. 4 is an explanatory view showing a state in which the operation member is moved in the E direction in FIG.

5 is a state in which the lock lever is released from the state of FIG. 1,
It is explanatory drawing which shows the state which rotated the buckle main body counterclockwise.

FIG. 6 is an explanatory diagram showing a state in which the buckle body is further rotated counterclockwise from the state of FIG. 5 to release the hook from the pin.

FIG. 7 is an explanatory diagram showing a state in which the buckle body is rotated clockwise from the state of FIG. 6 and the outer peripheral portion of the hook is in contact with the pin.

[Explanation of symbols]

 2 Back cover 3 Camera body die casting 4 Pin 6 Hook 7 Hook lever 9 Lock lever 11 O-ring 18 Lock member 20 Operation member 21 Grip

Claims (1)

[Claims] 1. A back cover opening / closing device for a waterproof camera, comprising: a back cover of a waterproof camera fixed to a camera body in a hermetically sealed state; and a coupling means capable of forcibly opening the back cover.