JPH0980588A - Camera provided with barrier having waterproof structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera provided with a barrier having waterproof structure capable of carrying out the smooth operation of the barrier and increasing the assembling work efficiency of the camera. SOLUTION: The camera is provided with the barrier 53 for opening/closing extending hole parts 58a and 58b for a lens barrel 63, formed in the front cover 51 of a camera main body and an inside cover 52 disposed at a short interval on the rear side of the front cover 51, so as to form a hollow space 56, between these two covers 51 and 52, a cover unit A provided with a cylindrical waterproof rubber ring 54 fixed on the circumference of the extending hole part 58b of the inside cover 52 on one end 54a, a camera body unit B provided with the lens barrel 63 being extendible from a housed position and a decorative ring unit C having a holding ring 71 attached to the front part of the lens barrel 63 and constituted to install the decorative ring unit C, in such a manner that the cover unit A is installed in the camera body unit B, then, the rubber ring 54 is folded on the outer periphery of the lens barrel and the other end part 54b of the ring 54 is held/fixed by the lens barrel 63 and the holding ring 71.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera capable of covering a front surface of a lens barrel with a barrier when the lens barrel is housed in the camera body, such as a collapsible camera with a barrier and a zoom lens camera. Regarding

[0002]

2. Description of the Related Art A camera having a barrier is widely known, and an example thereof will be described with reference to a retractable camera shown in FIGS. FIG. 6 is a mechanism diagram showing the barrier opening / closing mechanism and the motor drive mechanism as seen from the front side of the retractable camera.
[Fig. 3] is a simplified vertical side view of the camera.

The operation button 20 shown is a front cover 21 of the camera.
Of the electric power supply switching lever 23 and the barrier 24 by operating the operation button 20 between a first position shown in the figure and a second position which is slid to the right from this position. Work together.

Specifically, the operation button 20 is provided with an interlocking plate 22 having a forked engagement portion 22a and a push projection portion 22b.
The feed switching lever-2 is attached to the forked engagement portion 22a of the interlocking plate 22.
Since the interlocking pin 23a of No. 3 is inserted, the operation button 2
According to the operation of 0, the power feeding switching lever 23 turns around the support shaft 25. The power feed switching lever 23 is pivotally supported by the support shaft 25 on the inner cover 26 (FIG. 7).

Further, the power supply switching lever 23 is provided with a sliding contact piece 27, and the sliding contact piece 27 slides on a switch pattern of a wiring board (not shown), so that ON / OFF as a power switch.

The barrier 24 is pivotally attached to the inner cover 26 by a support shaft 28, but a spring 29 is provided.
When the operation button 20 is in the first position due to the counterclockwise turning force, it is closed so as to cover the front side of the lens barrel 30, and the stopper provided on the inner cover 26 at this closed position. It is stationary by hitting -31.

The pushing portion 24a of the barrier 24 is in contact with the pushing protrusion portion 22b of the interlocking plate 22, and the operating button 20
Is operated to the second position, the pushing portion 24a is pushed and rotated, and the barrier 24 turns clockwise and opens.

On the other hand, the lens barrel 30 is driven by a motor and guided by the guide shaft 32 to be fed out from the camera body, and is also fed into the camera body as shown in FIG. That is, the pinion gear 34 of the motor 33 and the interlocking gear 37 of the screw shaft 36 mesh with each other via the reduction gear 35, and the screw nut (not shown) is screw-fed by the rotation of the screw shaft 36. The interlocking lens barrel 30 is extended and inserted.

Further, a barrier locking shaft 38 is provided which projects from the inner cover 26 by the spring force at the initial stage when the lens barrel 30 is extended from the storage position and retracts when the lens barrel 30 is retracted to the storage position. The barrier locking shaft 38 holds the open position of the barrier 24.

The above-mentioned camera with a barrier has operation buttons 20.
By sliding operation from the illustrated first position to the second position, the pushing portion 24a of the barrier 24 is pushed and rotated, the barrier 24 is opened as shown by the two-dot chain line in the figure, and the power supply switching lever is also opened. By turning 23, the sliding contact piece 27 slides to turn on the main switch.

The motor 33 is turned on by turning on the main switch.
The lens barrel 30 is extended as the screw shaft 36 rotates. When the lens barrel 30 is extended to the photographing position, the motor 33 is detected according to the detected position.
Power supply stops.

When the lens barrel 30 is retracted, the motor 33 is supplied with electric power to rotate the screw shaft 36 in the reverse direction to return the lens barrel 30 to the storage position shown in FIG. Will retreat. Here, if the operation button 20 is slid from the second position to the first position, the barrier 24 is closed by the spring force, and the power supply switching lever 23 is returned and swiveled. Switch from ON to OFF.

The conventional camera described above is
A patent application has already been filed as the 1992 patent application No. 26512 by the same applicant as the present invention.

[0014]

The above-mentioned conventional camera has the barrier 2 between the front cover 21 of the camera and the inner cover 26 arranged at a small distance on the back side of the front cover 21.
4 is provided, and the barrier 24 opens and closes the feeding hole portion of the lens barrel 30 formed in the covers 21 and 26.

The covers 21 and 26 and the lens barrel 30 are also provided.
As a waterproofing means for water entering between the first body 3 and
A rubber ring 41 is fixed to the inner surface of the second body 40 near the inner cover of the front portion of the lens 9, and the outer peripheral surface of the lens barrel 30 is brought into contact with the rubber ring 41.

Therefore, as the lens barrel 30 is repeatedly fed, the inner cover 26 is pushed forward by the force acting on the rubber ring 41, and the distance between the front cover 21 and the inner cover 26 is narrowed. To be As a result, the cover
The barrier 24 that turns between 21 and 26 may be a heavy motion, and may not be a smooth-moving barrier 24.

Further, the above-mentioned waterproofing means has a drawback that the waterproofing function is deteriorated due to use over time, and that the replacement of the rubber ring 41 involves complicated disassembling work. Is equipped with a lens barrel 3
It is not preferable from the standpoint of improving the assembling work efficiency of the camera. For example, the rubber ring 41 is attached after 0 is attached, and then the lens barrel 30 is adjusted.

[0018]

SUMMARY OF THE INVENTION Therefore, according to the present invention, there is provided a camera including a lens barrel for taking out an image from a housed position in a camera body, and a barrier for closing a front side of the housed lens barrel. The purpose is to solve the above-mentioned problems.

In order to achieve this object, the present invention has a structure in which the cover unit and the camera body unit are preassembled and then these units are assembled.

The cover unit is a front cover of the camera body.
A barrier which opens and closes the feeding hole portion of the lens barrel formed in these two covers between the front cover and the inner cover arranged at a small interval on the back side of the front cover so as to form a vacant chamber. In addition, a cylindrical waterproof cover made of a flexible material, one end of which is fixed around the feeding hole portion of the inner cover, is provided.

The camera body unit is provided with various parts such as a lens barrel that can be extended from the storage position.

The decorative ring unit is configured to be attached to the front part of the lens barrel.

In each of the above-mentioned units, after the cover unit is attached to the camera body, the waterproof cover is bent back at the outer circumference of the lens barrel, and the other ends are part of the lens barrel and the decorative ring unit. Hold it in place and attach the decorative ring unit.

In the camera of the present invention thus constructed, when the lens barrel is extended, the bent back portion of the waterproof cover is changed and the other end side of the cover is pulled out, and vice versa. When the lens barrel is stored, the bent back portion of the waterproof cover changes and the other end side of the cover is pulled back.

From this fact, the inner cover is not affected by the movement of the waterproof cover at all, so that the barrier is always in a normal operating state, and the outer cover, the inner cover, and the lens barrel are connected to each other. As for the invading water, the above-mentioned waterproof cover
Can be surely waterproof.

If the waterproof cover is made of an opaque material, in addition to waterproofing, it is possible to block external light incident from between the camera cover and the lens barrel.

Further, in the camera of the present invention, the cover unit and the camera body unit are pre-assembled, and then these respective units are assembled, so that the camera is easy to assemble and the assembly work efficiency is improved. Will be extremely advantageous to.

In the camera of the present invention, the water that has entered through the gaps between the front cover and the inner cover and the barrier is discharged, so that a water drain hole is provided in the lower portion of the front cover. it can. Further, an air intake hole can be provided in the inner cover in order to suppress a change in the camera internal pressure that occurs when the lens barrel is housed.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention can be applied to a retractable camera with a barrier, a zoom lens camera, and the like.
Here, an example implemented in a retractable camera with a barrier similar to the conventional example will be described.

FIG. 1 shows a cover unit A, a camera body unit B, and a decorative ring unit C which are preassembled.
2 is a cover unit A as seen from the front side of the camera.
FIG.

As shown in these drawings, the cover unit A has a structure in which the front cover 51, the inner cover 52, the barrier 53, the rubber ring 54, the rubber ring retainer 55 and the like of the camera are assembled. Has become. The inner cover 52 is
An upright portion around the periphery is fixed so as to be fitted into the recessed portion of the front cover 51, and a void space 56 is formed between the front cover 51 and the front cover 51 at a small interval.

A support shaft 57 is attached to the inner cover 52.
A barrier 53 is attached by the barrier 53, and the barrier 53 opens and closes the feeding holes 58a and 58b of the lens barrel formed in the front cover 51 and the inner cover 52.

That is, the barrier 53 swivels between the front cover 51 and the inner cover 52, advances to the positions of the feeding holes 58a and 58b as shown in the closing operation, and two points shown in the drawing in the opening operation. It retreats into the vacant chamber 56 as indicated by the chain line.

A rubber ring 54 fixed by a rubber ring retainer 55 is provided on the back surface of the inner cover 52. The rubber ring 54 has a thin tubular shape, and is formed such that both side portions are formed to be somewhat thick and the thick portions are fixed.

The rubber ring 54 has one end 54a.
To cover the periphery of the feeding hole portion 58b of the inner cover 52.
It is positioned on the rear surface and fixed by a rubber ring retainer 55.

That is, one end 54a of the rubber ring 54 is sandwiched between the inner cover 52 and the rubber ring retainer 55, and the rubber ring retainer 55 is screwed and fixed to the inner cover 52.
Note that the rubber ring 54 can also be formed of another material that is similarly formed of a flexible material such as a synthetic resin material.

The front cover 5 of this cover unit A
1 is provided with a water drainage hole 59 for draining water intruding through the gaps between the covers 51, 52 and the barrier 53, and the inner cover 52 has a lens barrel housed in the camera body. An air intake hole 60 is provided to suppress a change in air pressure caused by. The air intake hole 60 is formed by projecting a hole edge as shown in the drawing, and is projected into a circular recess on the inner surface of the front cover 51.

The cover unit A described above is provided with a barrier driving mechanism such as the operation button 20, the interlocking plate 22 and the power feeding switching lever 23, which are shown in the conventional example, but they are not shown. In addition, 61 shown in FIG. 2 is a stopper, and 62 is a projecting hole of the barrier locking shaft 38 shown in the conventional example.

The camera body unit B is provided with a lens barrel 63 which can be housed in the camera body from the extended position, and the lens barrel 63 is motor-driven in the same manner as the conventional example. That is, the screw nut 64 is screw-fed by the screw shaft 64 that is interlocked with the motor.
The lens barrel 63 is moved in and interlocked with 5 and is moved in again. The lens barrel 63 has a behind shutter.

In addition, the camera body unit B has a construction in which the rear cover 66, the back cover 67, the pressure plate 68, the first body 69, the second body 70, and the like are assembled.

The decorative ring unit C has a structure in which a presser ring 71, a decorative ring 72 screwed to the presser ring 71 by a helicoid, and an O-ring 73 provided in the presser ring are assembled.

After the cover unit A and the camera body unit B are separately assembled as described above, the front cover 51 is removed.
Then, the cover unit A is attached to the camera body unit B such that the end portions of the rear cover 66 are fitted. In this case, the rubber ring 54 is attached to the lens barrel 63 and the first body 69.
Bend back between the lens barrel 63 and the other end 54b.
Pull it out in front of.

Subsequently, the decorative ring unit C is attached with the barrier 53 opened, but in this case, first,
The other end 54b of the rubber ring 54 is sandwiched between the tip of the lens frame 63a of the lens barrel 63 and the pressing ring 71, and in this state, the pressing ring 71 is screwed to the lens frame 63a with a machine screw 74. After that, the decoration ring 72 is screwed into the holding ring 71 with a helicoid screw, and the decoration ring unit C is attached.

FIG. 3 is a vertical sectional side view of the camera with a barrier assembled as described above. When the lens barrel 63 is housed in the camera thus configured, the rubber ring 54
When the bent-back portion 54c of FIG. 4 is displaced as shown in FIG. 4 and the lens barrel 63 is extended, the bent-back portion 54c
Are displaced as shown in FIG.

As is clear from the above, the cover-5
The rubber ring 54 prevents water from seeping between the 1, 52 and the barrier 53.
Can be reliably prevented by the rubber ring 54
Also acts as a light blocking member. By providing such waterproofing means, the cover unit A and the camera body unit B can be assembled in advance and then the respective units can be assembled, so that the camera is convenient for assembly.

[Brief description of drawings]

FIG. 1 is a simplified vertical side view showing one embodiment in which the present invention is embodied as a retractable camera and shows a state in which a cover unit, a camera body unit, and a decorative ring unit are separately assembled.

FIG. 2 is a schematic configuration diagram of a cover unit viewed from the front side of the camera.

FIG. 3 is a vertical cross-sectional side view of a camera configured by attaching a cover unit, a camera body unit, and a decorative ring unit.

FIG. 4 is a lens barrel partial view showing a deformed state of the rubber ring when the lens barrel is housed in the camera body.

FIG. 5 is a lens barrel partial view showing a deformed state of the rubber ring when the lens barrel is extended from the camera body.

FIG. 6 is a configuration diagram showing a motor drive mechanism and a barrier drive mechanism of a camera shown as a conventional example.

FIG. 7 is a schematic vertical sectional side view of a camera shown as a conventional example.

[Explanation of symbols]

 A cover unit B camera body unit C decorative ring unit 51 front cover 52 inner cover 53 barrier 54 rubber ring 55 rubber ring retainer 56 vacant chambers 58a, 58b feeding hole 63 lens barrel 66 rear cover 69 first body -70 2nd body 71 Presser ring 72 Decorative ring

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Keiji Shinya, 2-14-9, Tamagawadai, Setagaya-ku, Tokyo Kyocera Corporation Tokyo Yoga Works (72) Masao Tsujimura 2--14, Tamagawadai, Setagaya-ku, Tokyo No. 9 Inside Kyocera Corporation Tokyo Yoga Works

Claims (1)

[Claims] 1. A camera provided with a lens barrel for taking out a picture from a housed position in a camera body and a barrier for closing a front side of the housed lens barrel, wherein a front cover and a front side of the camera body are provided. A barrier for opening and closing the feeding hole portion of the lens barrel formed in these two covers is provided between the cover and an inner cover arranged at a small interval on the back side of the cover to form a vacant chamber. A tubular waterproof cover made of a flexible material, one end of which is fixed around the feeding hole of the inner cover.
A cover unit provided with a lens body, a camera body unit having a lens barrel that can be extended from the storage position, and a decorative ring unit attached to the front of the lens barrel.
After attaching the unit to the camera body unit, bend the waterproof cover back around the lens barrel and attach the decorative ring unit by holding the other end between the lens barrel and part of the decorative ring unit. A camera with a barrier having a waterproof structure.