JPH0160219U - - Google Patents
Info
- Publication number
- JPH0160219U JPH0160219U JP15684887U JP15684887U JPH0160219U JP H0160219 U JPH0160219 U JP H0160219U JP 15684887 U JP15684887 U JP 15684887U JP 15684887 U JP15684887 U JP 15684887U JP H0160219 U JPH0160219 U JP H0160219U
- Authority
- JP
- Japan
- Prior art keywords
- cam plate
- stepping motor
- electromagnetic drive
- rotating ring
- stator
- 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.)
- Pending
Links
- 210000000078 claw Anatomy 0.000 claims description 2
- 230000005284 excitation Effects 0.000 description 2
Landscapes
- Diaphragms For Cameras (AREA)
Description
第１図は本考案の一実施例を示した分解斜視図
、第２図は第１図の開放スイツチの組立の一例を
示した拡大斜視図、第３図は同じくステータの接
続部を示した拡大斜視図、第４図は同じく拡大断
面図、第５図は第１図の絞り羽根の組込工程の一
例を示した斜視図、第６図は同じく拡大断面図で
ある。
１……カム板、１Ａ……カム溝、１Ｂ……爪部
、２……開放スイツチ、３……絞り羽根、３Ａ，
３Ｂ……ダボ、４……回転リング、４Ａ……切り
欠き部、４Ｂ……開放スイツチレバー、４Ｃ……
ダボ、５……ステータ、５Ｃ……端面、６……励
磁コイル、７……ステータ、８……回転子、９…
…ステータ、１０……励磁コイル、１１……ステ
ータ、１２……下地板。
Fig. 1 is an exploded perspective view showing one embodiment of the present invention, Fig. 2 is an enlarged perspective view showing an example of the assembly of the open switch shown in Fig. 1, and Fig. 3 similarly shows the connection part of the stator. FIG. 4 is an enlarged perspective view, FIG. 4 is an enlarged sectional view, FIG. 5 is a perspective view showing an example of the process of assembling the aperture blades of FIG. 1, and FIG. 6 is an enlarged sectional view. 1...Cam plate, 1A...Cam groove, 1B...Claw portion, 2...Opening switch, 3...Aperture blade, 3A,
3B...Dowel, 4...Rotating ring, 4A...Notch, 4B...Opening switch lever, 4C...
Dowel, 5... Stator, 5C... End face, 6... Excitation coil, 7... Stator, 8... Rotor, 9...
... Stator, 10 ... Excitation coil, 11 ... Stator, 12 ... Base plate.
Claims (1)
回転リングの間に設けられた遮光用の絞り羽根の
開閉を行なう電磁駆動露光量調節装置において、
前記カム板の外周部には爪部を有するとともに前
記回転リングには切り欠き部を有して該カム板と
回転リングがバヨネツト方式で結合され、かつ、
前記ステツピングモータのステータの一部が該回
転リングの過回転を機械的に阻止する回転制限部
材となつていることを特徴とする電磁駆動露光量
調節装置。 In an electromagnetic drive exposure adjustment device that uses a stepping motor as a driving source to open and close a light-shielding aperture blade provided between a cam plate and a rotating ring,
The cam plate has a claw portion on the outer periphery thereof, and the rotary ring has a notch portion, so that the cam plate and the rotary ring are coupled by a bayonet method, and
An electromagnetic drive exposure amount adjusting device characterized in that a part of the stator of the stepping motor serves as a rotation limiting member that mechanically prevents over-rotation of the rotating ring.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15684887U JPH0160219U (en) | 1987-10-14 | 1987-10-14 | |
| US07/256,569 US4897681A (en) | 1987-10-14 | 1988-10-12 | Exposure amount adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15684887U JPH0160219U (en) | 1987-10-14 | 1987-10-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0160219U true JPH0160219U (en) | 1989-04-17 |
Family
ID=31435759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15684887U Pending JPH0160219U (en) | 1987-10-14 | 1987-10-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0160219U (en) |
-
1987
- 1987-10-14 JP JP15684887U patent/JPH0160219U/ja active Pending