JP3306696B2 - Camera with barrier with waterproof structure - Google Patents

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 a camera body, for example, a retractable camera with a barrier, a zoom lens camera. About.

[0002]

2. Description of the Related Art A camera having a barrier is widely known. One example of the camera will be described with reference to a retractable camera shown in FIGS. FIG. 6 is a mechanism diagram showing a barrier opening / closing mechanism and a motor driving mechanism as viewed from the front side of the retractable camera.
FIG. 2 is a simplified vertical side view of the camera.

The operation button 20 shown in FIG.
The power supply switching lever 23 and the barrier 24 are arranged by operating the operation button 20 between a first position shown in the figure and a second position slid rightward from this position. Interlock.

[0004] Specifically, an interlocking plate 22 having a bifurcated engaging portion 22a and a pushing protrusion 22b is provided on the operation button 20,
A power supply switching lever-2 is attached to the forked engaging portion 22a of the interlocking plate 22.
Since the interlocking pin 23a of the No. 3 is inserted, the operation button 2
In accordance with the operation of “0”, the power supply switching lever 23 turns around the support shaft 25. The power supply switching lever 23 is supported by an inner cover 26 (FIG. 7) by a support shaft 25.

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

The barrier 24 is pivotally attached to the inner cover 26 by a support shaft 28.
When the operation button 20 is at the first position, the operation button 20 is closed so as to cover the front side of the lens barrel 30, and the stopper provided on the inner cover 26 in this closed position. It stands still at -31.

The barrier 24 has a pushing portion 24a in contact with a pushing protruding portion 22b of the interlocking plate 22.
Is operated to the second position, the pushing portion 24a is pushed and turned, and the barrier 24 turns clockwise to open.

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

A barrier locking shaft 38 is provided which projects from the inner cover 26 by spring force at the initial stage when the lens barrel 30 is extended from the storage position, and retreats when the lens barrel 30 is retracted into the storage position. The barrier locking shaft 38 maintains the open position of the barrier 24.

The above-described camera with a barrier is provided with an operation button 20.
Is slid from the first position to the second position as shown in the drawing, the pushing portion 24a of the barrier 24 is pushed and turned, and the barrier 24 is opened as shown by a two-dot chain line in the drawing. By turning of 23, the sliding contact piece 27 slides and the main switch is turned ON.

When the main switch is turned on, the motor 33 is turned on.
Rotates, 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 moved in, the motor 33 is supplied with electric power, the screw shaft 36 rotates in the reverse direction, and the lens barrel 30 returns to the storage position shown in FIG. Retreats. 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 returns and turns. Switch from ON to OFF.

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

[0014]

In the above-mentioned conventional camera, the barrier 2 is provided between the front cover 21 of the camera and the inner cover 26 arranged at a small interval behind the front cover 21.
4 is provided, and the barrier 24 opens and closes a feed hole portion of the lens barrel 30 formed in the covers 21 and 26.

The covers 21 and 26 and the lens barrel 30
The first body-3
A rubber ring 41 is fixed to the inner surface of the second body 40 provided at the front of the body 9 near the inner cover, and the outer peripheral surface of the lens barrel 30 is brought into contact with the rubber ring 41.

For this reason, by repeatedly extending the lens barrel 30, the force acting on the rubber ring 41 pushes the inner cover 26 forward, and the distance between the front cover 21 and the inner cover 26 is reduced. Can be As a result, the cover
In some cases, the barrier 24 that pivots between the first and second wheels 21 and 26 becomes a heavy operation, and does not become the barrier 24 having a smooth movement.

The above-mentioned waterproofing means has the disadvantage that the waterproofing function is deteriorated by aging, and that replacement of the rubber ring 41 requires complicated disassembling work. Is provided with the lens barrel 3
For example, the rubber ring 41 is attached after the 0 is assembled, and then the extension of the lens barrel 30 is adjusted.

[0018]

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a camera having a lens barrel for extending and photographing from a storage position in a camera body, and a barrier for closing a front side of the stored lens barrel. It is an object of the present invention to solve the problems described above.

In order to achieve this object, in the present invention, the cover unit and the camera body unit are assembled in advance, and then these units are assembled.

[0020] The cover unit is a cover in front of the camera body.
A barrier which opens and closes a feed-out hole of a lens barrel formed between these two covers, and between the front cover and an inner cover which is disposed at a small interval behind the front cover so as to form an empty space. In addition, a tubular waterproof cover made of a flexible material having one end fixed to the periphery of the feed hole of the inner cover is provided.

The camera body unit has components 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 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 around the outer periphery of the lens barrel, and the other end is combined with the lens barrel and a part of the decorative ring unit. Attach and fix the decorative ring unit.

In the camera of the present invention constructed as described above, when the lens barrel is extended, the bent-back portion of the waterproof cover shifts, and the other end of the cover is pulled out. When the lens barrel is stored, the bent portion of the waterproof cover shifts, and the other end of the cover is pulled back.

From the above, since the inner cover is not affected by the movement of the waterproof cover at all, the barrier is always in a normal operation state, and the outer cover and the inner cover are each in a normal operation state. The above-mentioned waterproof cover covers the water that enters.
Can be reliably waterproofed.

When the waterproof cover is made of an opaque material, it is possible to shield not only waterproof but also external light incident from between the camera cover and the lens barrel.

Further, the camera of the present invention has a structure in which the cover unit and the camera body unit are assembled in advance, and then each of these units is assembled. Therefore, the camera is easy to assemble, and the work efficiency of assembling is improved. This is extremely advantageous.

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

[0029]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be applied to a collapsible camera with a barrier, a zoom lens camera, and the like.
Here, an example implemented in a collapsible 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 have been assembled in advance.
FIG. 2 shows a cover unit A viewed from the front side of the camera.
FIG.

As shown in these drawings, the cover unit A has a structure in which components such as a front cover 51, an inner cover 52, a barrier 53, a rubber ring 54, and a rubber ring presser 55 of a camera are assembled. Has become. The inner cover 52 is
The surrounding upright portion is fixed so as to be fitted to the concave streak portion of the front cover 51, and a small space 56 is formed between the front cover 51 and the front cover 51.

The inner cover 52 has a support shaft 57.
A barrier 53 is attached, and the barrier 53 opens and closes the feed-out holes 58a and 58b of the lens barrel formed in the front cover 51 and the inner cover 52.

That is, the barrier 53 pivots between the front cover 51 and the inner cover 52, and advances to the positions of the above-mentioned feeding holes 58a and 58b in the closing operation, and two points in the opening operation. It retreats to the empty room 56 like a 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 cylindrical shape, has a slightly thicker side portion, and is fixed to the thicker portion.

The rubber ring 54 has one end 54a.
Covers the periphery of the feed hole portion 58b of the inner cover 52.
It is positioned on the rear surface and fastened 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 be formed of another material similarly formed of a flexible material such as a synthetic resin material.

The front cover 5 of the cover unit A
1 is provided with a drain hole 59 for draining water entering through a gap between the covers 51 and 52 and the barrier 53, and a lens barrel is housed in the camera body in the inner cover 52. An air intake hole 60 for suppressing a change in air pressure caused by the air pressure is provided. The air intake hole 60 has a hole edge protruding as shown in the figure, and is made to protrude into a circular concave portion on the inner surface of the front cover 51.

The above-mentioned cover unit A is provided with a barrier drive mechanism such as the operation button 20, the interlocking plate 22, and the power supply switching lever 23 as shown in the conventional example, but this is 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 that can be stored in the camera body from the extended position. The lens barrel 63 is driven by a motor as in the conventional example. That is, the screw nut 6 is screw-fed by the screw shaft 64 linked by the motor.
5, the lens barrel 63 is extended and extended. The lens barrel 63 has a behind shutter.

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

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

After assembling the cover unit A and the camera body unit B separately as described above, the front cover 51
The cover unit A is attached to the camera body unit B such that the ends of the rear cover 66 and the rear cover 66 are fitted together. In this case, the rubber ring 54 is connected to the lens barrel 63 and the first body 69.
And the other end 54b is connected to the lens barrel 63.
Pull out in front of.

Subsequently, the decorative ring unit C is mounted in a state where the barrier 53 is opened.
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 holding ring 71. In this state, the holding ring 71 is screwed to the lens frame 63a with small screws 74. Thereafter, the decorative ring 72 is screwed into the holding ring 71 with a helicoid screw, and the decorative ring unit C is mounted.

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

As is clear from the above, the cover-5
The rubber ring 54
And the rubber ring 54
Also act as a light blocking member. By providing such a waterproofing means, after assembling the cover unit A and the camera body unit B in advance, each of these units can be assembled, so that the camera is convenient for assembling.

[Brief description of the drawings]

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

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

FIG. 3 is a vertical 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 a rubber ring when the lens barrel is housed in the camera body.

FIG. 5 is a partial view of a lens barrel showing a deformed state of a 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 simplified vertical sectional side view of a camera shown as a conventional example.

[Explanation of symbols]

 A Cover Unit B Camera Body Unit C Decorating Ring Unit 51 Front Cover 52 Inner Cover 53 Barrier 54 Rubber Ring 55 Rubber Ring Holder 56 Vacancies 58a, 58b Feeding Hole 63 Lens Barrel 66 Rear Cover 69 First Body -70 second body-71 holding ring 72 decorative ring

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Masao Tsujimura 2-14-9 Tamagawadai, Setagaya-ku, Tokyo Kyocera Corporation Tokyo Yoga Office (56) References JP-A-62-255927 (JP, A) Kaihei 5-81831 (JP, U) Japanese Utility Model 63-63324 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G03B 11/00-11/06 G03B 5/00 G03B 17/04-17/17

Claims (1)

(57) [Claims] 1. A camera provided with a lens barrel for extending and photographing from a storage position in a camera body, and a barrier for closing a front side of the housed lens barrel. A barrier is provided between the inner cover and the inner cover, which is disposed at a small interval behind the cover to form an empty space, and opens and closes a feed-out hole of a lens barrel formed in the two covers. A cylindrical waterproof cover made of a flexible material having one end fixed to the periphery of the feed hole of the inner cover;
A cover unit provided with a lens body, a camera body unit provided with a lens barrel that can be extended from a storage position, and a decorative ring unit attached to a front part of the lens barrel.
After attaching the unit to the camera body unit, the waterproof cover is bent back around the lens barrel, and the other end is clamped and fixed between the lens barrel and a part of the decorative ring unit to mount the decorative ring unit. A camera with a barrier having a waterproof structure.