JPS6384128U - - Google Patents
Info
- Publication number
- JPS6384128U JPS6384128U JP17913986U JP17913986U JPS6384128U JP S6384128 U JPS6384128 U JP S6384128U JP 17913986 U JP17913986 U JP 17913986U JP 17913986 U JP17913986 U JP 17913986U JP S6384128 U JPS6384128 U JP S6384128U
- Authority
- JP
- Japan
- Prior art keywords
- conductor piece
- rotating
- piece
- fixed
- fixed conductor
- 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.)
- Granted
Links
- 239000004020 conductor Substances 0.000 claims description 16
- 230000003287 optical effect Effects 0.000 claims 3
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
- 238000005375 photometry Methods 0.000 description 1
Landscapes
- Shutters For Cameras (AREA)
- Contacts (AREA)
- Exposure Control For Cameras (AREA)
- Cameras In General (AREA)
- Diaphragms For Cameras (AREA)
Description
第１図は本考案による電動式露光調整装置の要
部の分解斜視図、第２図は第１図の装置の組立て
た状態の一実施例を示す斜視図、第３図ａ，ｂ，
ｃ，ｄ及び第４図は本考案装置に装備されている
２相ステツピングモータの動作を説明するための
図、第５図は本考案の電動式露光装置に装備され
ている開孔状態検出手段における導電パターン板
と回転導体片の拡大斜視図、第６図は絞り羽根（
遮光羽根）によつて形成される開口と光路孔との
関係を示した図、第７図は本考案の装置において
回転リング１７の回転とステツプ位置との関係を
説明するための図、第８図は本考案の装置を組込
んだカメラにおける一部の制御回路を示したブロ
ツク図、である。
１……支持部材、２……ロータ、４……ピニオ
ン、５……軸受板、６〜９……ステータ、１０，
１１……コイルの鉄心、１２，１３……ステータ
用コイル、１４……導電パターン板、１５……カ
ム板、１６……絞り羽根（遮光羽根）、１７……
回転リング（回転部材）、１７ｄ，１７ｈ……回
転導体片、１８……フレキシブルプリント板、１
９……電動式露光調整装置、２０……（制御回路
等の）ケース、２１……測光回路、２２……光量
設定回路、２３……シヤツター駆動回路、２５…
…分配回路、２６……モータ制御回路。
FIG. 1 is an exploded perspective view of the main parts of an electric exposure adjustment device according to the present invention, FIG. 2 is a perspective view showing an embodiment of the device shown in FIG. 1 in an assembled state, and FIGS. 3a, b,
Figures c, d, and 4 are diagrams for explaining the operation of the two-phase stepping motor installed in the device of the present invention, and Figure 5 is a diagram for detecting the open hole state installed in the electric exposure device of the present invention. An enlarged perspective view of the conductive pattern plate and rotating conductor piece in the means, FIG.
FIG. 7 is a diagram for explaining the relationship between the rotation of the rotary ring 17 and the step position in the device of the present invention, and FIG. The figure is a block diagram showing part of the control circuit in a camera incorporating the device of the present invention. DESCRIPTION OF SYMBOLS 1... Support member, 2... Rotor, 4... Pinion, 5... Bearing plate, 6-9... Stator, 10,
11... Coil core, 12, 13... Stator coil, 14... Conductive pattern plate, 15... Cam plate, 16... Aperture blade (shading blade), 17...
Rotating ring (rotating member), 17d, 17h... Rotating conductor piece, 18... Flexible printed board, 1
9... Electric exposure adjustment device, 20... Case (for control circuit, etc.), 21... Photometry circuit, 22... Light amount setting circuit, 23... Shutter drive circuit, 25...
...Distribution circuit, 26...Motor control circuit.
Claims (1)
によつて開閉される光路孔を中心部に有した環状
円板形の回転部材と、該回転部材の中心線に対し
て偏心した中心軸線を有するとともに該光路孔よ
り外側の位置に配置された該回転部材駆動用の二
相ステツピングモータと、該光路孔が該遮光羽根
によつて開かれたか否かを該回転部材の回転位置
の検出により検出する開孔状態検出手段と、を有
して成り、 該開孔状態検出手段は、 該回転部材とともに回転し且つ互いに並んで配
置された第１及び第２の回転導体片と、該第１の
回転導体片に摺接するとともに該第１の回転導体
片の回転軌跡に沿つて延在する長い円弧長を有し
た第１の固定導体片と、該第２の回転導体片に摺
接するとともに該第２の回転導体片の回転軌跡に
沿つて延在する短い円弧長を有した第２の固定導
体片と、を具備した回転摺接スイツチとして構成
され、 該第１及び第２の固定導体片は互いに平行に円
弧状に延在するとともに両固定導体片の第１の端
部は該回転導体片の同じ回転角位置に配置される
一方、該第１の固定導体片の第２の端部と該第２
の固定導体片の第２の端部とは該回転導体片の互
いに異なつた回転角位置に配置されており、 該第２の固定導体片の該第２の端部の位置を該
光路孔の完全開放位置として設定した構成を有し
て成る電動式露光調整装置。[Scope of Claim for Utility Model Registration] An annular disc-shaped rotating member that supports a plurality of light-shielding blades and has an optical path hole in the center that is opened and closed by the light-shielding blades; a two-phase stepping motor for driving the rotating member, which has an eccentric central axis and is located outside the optical path hole; an open hole state detection means for detecting the rotational position of the member; the open hole state detection means includes first and second rotating members that rotate together with the rotating member and are arranged in parallel with each other; a conductor piece; a first stationary conductor piece having a long arc length that slides on the first rotating conductor piece and extends along a rotation locus of the first rotating conductor piece; a second fixed conductor piece having a short arc length that slides on the conductor piece and extends along the rotation locus of the second rotary conductor piece; and a second fixed conductor piece extend parallel to each other in an arc shape, and the first ends of both fixed conductor pieces are arranged at the same rotational angular position of the rotating conductor piece, while the first fixed conductor piece a second end of the piece;
The second end of the fixed conductor piece is arranged at different rotation angle positions of the rotating conductor piece, and the position of the second end of the second fixed conductor piece is set to the optical path hole. An electric exposure adjustment device having a configuration set as a fully open position.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17913986U JPH0442822Y2 (en) | 1986-11-21 | 1986-11-21 | |
| US07/368,935 US4922274A (en) | 1986-11-21 | 1989-06-19 | Motor driven exposure adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17913986U JPH0442822Y2 (en) | 1986-11-21 | 1986-11-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6384128U true JPS6384128U (en) | 1988-06-02 |
| JPH0442822Y2 JPH0442822Y2 (en) | 1992-10-09 |
Family
ID=31121933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17913986U Expired JPH0442822Y2 (en) | 1986-11-21 | 1986-11-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0442822Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008129291A (en) * | 2006-11-20 | 2008-06-05 | Seiko Precision Inc | Flexible board holding device and device for driving camera blade |
-
1986
- 1986-11-21 JP JP17913986U patent/JPH0442822Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008129291A (en) * | 2006-11-20 | 2008-06-05 | Seiko Precision Inc | Flexible board holding device and device for driving camera blade |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0442822Y2 (en) | 1992-10-09 |
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