JPS6326812Y2 - - Google Patents
Info
- Publication number
- JPS6326812Y2 JPS6326812Y2 JP1982194059U JP19405982U JPS6326812Y2 JP S6326812 Y2 JPS6326812 Y2 JP S6326812Y2 JP 1982194059 U JP1982194059 U JP 1982194059U JP 19405982 U JP19405982 U JP 19405982U JP S6326812 Y2 JPS6326812 Y2 JP S6326812Y2
- Authority
- JP
- Japan
- Prior art keywords
- flange portion
- yoke
- permanent magnet
- lens
- molded product
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000696 magnetic material Substances 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Lens Barrels (AREA)
- Shutters For Cameras (AREA)
- Details Of Cameras Including Film Mechanisms (AREA)
Description
【考案の詳細な説明】
この考案は電磁駆動装置を持つたカメラの改良
に関するものである。[Detailed description of the invention] This invention relates to an improvement of a camera having an electromagnetic drive device.
従来の電磁駆動装置を持つたカメラの場合、そ
の電磁駆動装置がシヤツター駆動であると、撮影
レンズ駆動であるとを問わず永久磁石の保持枠と
撮影レンズの鏡枠とは別部品により構成されてい
た。その理由は機能別にユニツト化した方が作業
性や各機構の歩溜り等を考慮した場合に有利であ
るとされていたからであるが、実際には電磁駆動
装置では可動部品は可動コイル部材等極小数の部
品に限られ、組立時における調整作業等が不要で
あるため、ことさら、機能別に各機構を別部品に
より構成する必要が少なくなつているのが現状で
ある。むしろ、近年のようにカメラ自体が小型高
性能化した場合には機能別に機構を分割すること
は却つて取付精度を悪くし、狭ばめられた内部空
間を有効に活用できないという弊害があつた。例
えば、電磁駆動シヤツター装置のように、撮影レ
ンズの光軸を基準にして設計する場合には、撮影
レンズの鏡枠と電磁駆動シヤツター装置が機能別
に分離しているとすると、取付けによる偏心や位
置決めによる誤差等も生じ易くなるし、電磁駆動
シヤツター装置の可動コイル部材の軸受けとして
鏡枠がそのまま利用できず、そこに余分なスペー
スが必要になるなどの問題があつた。 In the case of a camera with a conventional electromagnetic drive device, if the electromagnetic drive device is a shutter drive, the permanent magnet holding frame and the lens frame of the photographic lens are constructed as separate parts, regardless of whether the electromagnetic drive device is a shutter drive or a taking lens drive. was. The reason for this was that it was thought that it would be more advantageous to unitize each function in terms of workability and yield of each mechanism, but in reality, in electromagnetic drive devices, the number of moving parts such as moving coil members is extremely small. The present situation is such that there is no need to configure each mechanism with separate parts for each function, especially since there is no need for adjustment work during assembly. On the contrary, as cameras themselves have become smaller and more sophisticated in recent years, dividing the mechanism by function has the disadvantage of worsening mounting accuracy and making it impossible to make effective use of the narrow internal space. . For example, when designing an electromagnetic drive shutter device based on the optical axis of the photographic lens, if the lens frame of the photographic lens and the electromagnetic drive shutter device are separated by function, eccentricity and positioning due to mounting may occur. In addition, the lens frame cannot be used as it is as a bearing for the movable coil member of the electromagnetic shutter device, resulting in problems such as the need for extra space.
この考案は上記種々の問題を解消しようとする
もので、電磁駆動装置に使用する固定永久磁石の
保持枠と撮影レンズの鏡枠とを非磁性材料により
一体成形するという簡易な構成によつて、カメラ
内部の空間を有効活用するとともに撮影レンズの
光軸と固定永久磁石の取付位置との偏心をなくし
た高精度な電磁駆動装置を持つカメラを提供する
ことを目的としている。 This invention attempts to solve the various problems mentioned above, and has a simple structure in which the holding frame of the fixed permanent magnet used in the electromagnetic drive device and the lens frame of the photographic lens are integrally molded from non-magnetic material. It is an object of the present invention to provide a camera having a high-precision electromagnetic drive device that effectively utilizes the space inside the camera and eliminates eccentricity between the optical axis of a photographing lens and the mounting position of a fixed permanent magnet.
次に、この考案を添付図面に示す一実施例にも
とづいて説明する。 Next, this invention will be explained based on an embodiment shown in the accompanying drawings.
1は中央円筒部2とフランジ部3とを合成樹脂
等の非磁性材料にて第2図示の如く一体成形して
なる成形品で、該成形品1の中央円筒部2は撮影
レンズの前群4,5を嵌入した鏡枠を構成し、フ
ランジ部3は円周に沿う複数の等配位置に固定永
久磁石6を埋設した永久磁石保持枠を構成してい
る。前記撮影レンズの前群4,5はその鏡枠たる
中央円筒部2の前部外周に螺合した前枠7によつ
て固定されている。8は前記中央円筒部2の前部
外周に嵌合した第一継鉄で、該第一継鉄8は前記
フランジ部3の前面に、固定永久磁石6の吸着力
にて吸着固定されている。9は前記中央円筒部2
の後部外周に嵌合した第二継鉄で、該第二継鉄9
は前記フランジ部3の後面外周部に設けた環状突
起3aに、固定永久磁石6の吸着力にて係止し、
該固定永久磁石6との間に一定のギヤツプGを保
持している。10は固定永久磁石6と第二継鉄9
との間のギヤツプG内に介装した可動コイル部材
で、前記成形品1の中央円筒部2の外周を軸とし
て、回転可能に設けられている。この可動コイル
部材10は図示しないコイルに通電すると、その
電流の方向によつて右または左に回動するもので
ある。11は絞りシヤツター羽根で、該絞りシヤ
ツター羽根11は第二継鉄9と、これに一定の間
隔を隔てネジ(図示せず)等によつて固定された
押え板12との間に軸13を介して軸支され、か
つ前記可動コイル部材10に植設したピン14に
係合し、可動コイル部材10の回転に連動して開
閉作動するようになつている。 1 is a molded product in which a central cylindrical portion 2 and a flange portion 3 are integrally molded from a non-magnetic material such as synthetic resin as shown in the second figure. The flange portion 3 constitutes a permanent magnet holding frame in which fixed permanent magnets 6 are embedded at a plurality of equidistant positions along the circumference. The front groups 4 and 5 of the photographing lens are fixed by a front frame 7 screwed onto the front outer periphery of the central cylindrical portion 2 serving as the lens frame. Reference numeral 8 denotes a first yoke fitted to the front outer periphery of the central cylindrical portion 2, and the first yoke 8 is attracted and fixed to the front surface of the flange portion 3 by the attraction force of the fixed permanent magnet 6. . 9 is the central cylindrical portion 2
A second yoke fitted to the rear outer periphery of the second yoke 9
is locked to an annular projection 3a provided on the outer circumference of the rear surface of the flange portion 3 by the attraction force of the fixed permanent magnet 6,
A constant gap G is maintained between the fixed permanent magnet 6 and the fixed permanent magnet 6. 10 is a fixed permanent magnet 6 and a second yoke 9
This is a movable coil member interposed in the gap G between the molded product 1 and the movable coil member, and is rotatably provided around the outer periphery of the central cylindrical portion 2 of the molded product 1. When a coil (not shown) is energized, the movable coil member 10 rotates to the right or left depending on the direction of the current. Reference numeral 11 denotes an aperture shutter blade, and the aperture shutter blade 11 has a shaft 13 between the second yoke 9 and a holding plate 12 fixed thereto with a screw (not shown) or the like at a constant interval. The movable coil member 10 is pivotally supported through the movable coil member 10, and is engaged with a pin 14 implanted in the movable coil member 10, so that the movable coil member 10 opens and closes in conjunction with the rotation of the movable coil member 10.
この考案は以上のごとく、固定永久磁石6の保
持枠と撮影レンズの鏡枠とは非磁性材料にて一体
成形してなるから、前述の如く電磁駆動シヤツタ
ー装置に応用した場合、撮影レンズの光軸とシヤ
ツターの中心とが無調整で高精度に一致するた
め、組立時の作業性の向上が期待できるばかりで
なく、可動コイル部材の軸受けとして鏡枠外周が
そのまま利用できるので、部品点数の減少のみな
らず、小型化したカメラの如く内部スペースが狭
い場合にも支障なく設置でき、しかもカメラ製造
におけるトータルコストが大巾に減少するなど各
種のすぐれた効果を奏するものである。 As described above, in this invention, since the holding frame of the fixed permanent magnet 6 and the lens frame of the photographing lens are integrally molded with non-magnetic material, when applied to the electromagnetic drive shutter device as described above, the light of the photographing lens Since the axis and the center of the shutter match with high precision without any adjustment, it is expected to improve workability during assembly, and the outer periphery of the lens frame can be used as is as a bearing for the moving coil member, reducing the number of parts. In addition, it can be installed without any problem even in cases where the internal space is narrow, such as in a miniaturized camera, and it has various excellent effects, such as greatly reducing the total cost of manufacturing the camera.
図はこの考案の一実施例を示し、第1図は要部
の側面断面図、第2図は一体成形品の一部切欠斜
視図である。
1……成形品、2……中央円筒部(鏡枠)、3
……フランジ部(永久磁石保持枠)、6……固定
永久磁石。
The figures show an embodiment of this invention, with FIG. 1 being a side sectional view of the main part, and FIG. 2 being a partially cutaway perspective view of an integrally molded product. 1... Molded product, 2... Central cylindrical part (lens frame), 3
...Flange part (permanent magnet holding frame), 6...Fixed permanent magnet.
Claims (1)
設置するための複数の穴を円周方向に有するフラ
ンジ部と、該フランジ部から突出する、レンズを
保持するための鏡枠部とを有する成形品を設け、
該成形品のフランジ部の穴に永久磁石を配設する
とともに、光軸方向に見て前記フランジ部の前後
に第一継鉄及び第二継鉄を前記永久磁石の磁力に
より結合させ、かつ、第二継鉄とフランジ部との
間にフランジ部外周に設けた環状突起分のギヤツ
プを設け、該ギヤツプ内に可動コイル部材を配設
するとともに、第二継鉄の外側に被駆動部材を設
けたことを特徴とする電磁駆動装置を持つたカメ
ラ。 A molded product that is integrally molded from a non-magnetic material and has a flange portion having a plurality of holes in the circumferential direction for installing permanent magnets, and a lens frame portion for holding a lens that protrudes from the flange portion. established,
A permanent magnet is disposed in a hole in the flange portion of the molded product, and a first yoke and a second yoke are coupled in front and behind the flange portion when viewed in the optical axis direction by the magnetic force of the permanent magnet, and A gap corresponding to the annular projection provided on the outer periphery of the flange portion is provided between the second yoke and the flange portion, a moving coil member is provided within the gap, and a driven member is provided on the outside of the second yoke. A camera with an electromagnetic drive device.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19405982U JPS5998426U (en) | 1982-12-23 | 1982-12-23 | Camera with electromagnetic drive |
DE19833346552 DE3346552A1 (en) | 1982-12-23 | 1983-12-22 | CAMERA |
US06/564,297 US4598989A (en) | 1982-12-23 | 1983-12-22 | Camera |
GB08334441A GB2132381B (en) | 1982-12-23 | 1983-12-23 | Camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19405982U JPS5998426U (en) | 1982-12-23 | 1982-12-23 | Camera with electromagnetic drive |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5998426U JPS5998426U (en) | 1984-07-03 |
JPS6326812Y2 true JPS6326812Y2 (en) | 1988-07-20 |
Family
ID=30417229
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19405982U Granted JPS5998426U (en) | 1982-12-23 | 1982-12-23 | Camera with electromagnetic drive |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5998426U (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5412727A (en) * | 1977-06-27 | 1979-01-30 | Prontor Werk Gauthier Gmbh | Shutter for photograph |
JPS56111844A (en) * | 1980-02-08 | 1981-09-03 | Canon Inc | Electromagnetic drive shutter |
-
1982
- 1982-12-23 JP JP19405982U patent/JPS5998426U/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5412727A (en) * | 1977-06-27 | 1979-01-30 | Prontor Werk Gauthier Gmbh | Shutter for photograph |
JPS56111844A (en) * | 1980-02-08 | 1981-09-03 | Canon Inc | Electromagnetic drive shutter |
Also Published As
Publication number | Publication date |
---|---|
JPS5998426U (en) | 1984-07-03 |
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