JPH0416427U - - Google Patents
Info
- Publication number
- JPH0416427U JPH0416427U JP5775590U JP5775590U JPH0416427U JP H0416427 U JPH0416427 U JP H0416427U JP 5775590 U JP5775590 U JP 5775590U JP 5775590 U JP5775590 U JP 5775590U JP H0416427 U JPH0416427 U JP H0416427U
- Authority
- JP
- Japan
- Prior art keywords
- closing lever
- blade
- travel
- stage
- blade opening
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Shutters For Cameras (AREA)
Description
第１図は本考案の１実施例に係るシヤツタ駆動
機構の初期状態に於ける平面図、第２図及び第３
図は第１図の機構に使用されるステツプモータの
構造図、第４図は本考案の制御システムのブロツ
ク図、第５図は上記実施例の制御用フローチヤー
ト、第６図は上記実施例のタイムチヤート、第７
図は本実施例の機構において主駆動リングが羽根
開口領域の直前に到達した状態を示す平面図、第
８図は本実施例の機構において主駆動リングが羽
根開口位置にある時の平面図、第９図は本実施例
の機構において主駆動リングが羽根を閉鎖した直
後の状態にある時の平面図。
１……ステツプモータ、２……ロータ、３，４
……ステータ、５，６……コイル、８……主駆動
部材、８ｂ……カム、８ｃ……台形カム、１０…
…羽根開閉レバー、１４……係止レバー。
FIG. 1 is a plan view of a shutter drive mechanism in an initial state according to an embodiment of the present invention, and FIGS.
The figure is a structural diagram of the step motor used in the mechanism of Figure 1, Figure 4 is a block diagram of the control system of the present invention, Figure 5 is a control flowchart of the above embodiment, and Figure 6 is the embodiment of the above embodiment. Time chart, 7th
The figure is a plan view showing a state in which the main drive ring has reached just before the blade opening area in the mechanism of this embodiment, and FIG. 8 is a plan view when the main drive ring is at the blade opening position in the mechanism of this embodiment. FIG. 9 is a plan view of the mechanism of this embodiment when the main drive ring is in a state immediately after closing the blades. 1...Step motor, 2...Rotor, 3, 4
... Stator, 5, 6 ... Coil, 8 ... Main drive member, 8b ... Cam, 8c ... Trapezoidal cam, 10 ...
...Blade opening/closing lever, 14...Latching lever.
Claims (1)
タの回転が伝達されて走行する駆動部材と、 絞り羽根兼用のシヤツタ羽根と連結され、該シ
ヤツタ羽根の開口方向に向けて付勢された羽根開
閉レバーと、 該羽根開閉レバーを初期位置でホールドする機
構とを備えるとともに、 前記駆動部材の走行の第１段階で前記羽根開閉
レバーのホールドを解除するとともに、走行の第
２段階で前記羽根開閉レバーを前記付勢力に抗し
て初期位置に復帰させる様にしたステツプモータ
制御シヤツタにおいて、 前記駆動部材の走行の第１段階から走行の第２
段階に移行する迄の時間で露出秒時を制御すると
ともに、前記駆動部材の走行の第２段階で前記羽
根開閉レバーが全閉位置に到達する時の前記ステ
ツプモータの位相を無通電時の安定位相と一致さ
せたことを特徴とするステツプモータ制御シヤツ
タ。[Scope of Claim for Utility Model Registration] A drive member that uses a step motor as a drive source, and is connected to a drive member that travels by transmitting the rotation of the step motor, and a shutter blade that also serves as an aperture blade, and is attached toward the opening direction of the shutter blade. The blade opening/closing lever is provided with a biased blade opening/closing lever and a mechanism for holding the blade opening/closing lever at an initial position, and the holding of the blade opening/closing lever is released in the first stage of travel of the drive member, and the hold of the blade opening/closing lever is released in the second stage of travel. In the step motor controlled shutter, the blade opening/closing lever is returned to the initial position against the urging force, wherein the driving member moves from the first stage of travel to the second stage of travel of the drive member.
The exposure time is controlled by the time it takes to shift to the step, and the phase of the step motor when the blade opening/closing lever reaches the fully closed position in the second stage of the drive member's travel is controlled to be stable when no current is applied. A step motor controlled shutter characterized by matching the phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5775590U JP2515213Y2 (en) | 1990-05-31 | 1990-05-31 | Step motor control shutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5775590U JP2515213Y2 (en) | 1990-05-31 | 1990-05-31 | Step motor control shutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0416427U true JPH0416427U (en) | 1992-02-10 |
| JP2515213Y2 JP2515213Y2 (en) | 1996-10-30 |
Family
ID=31582757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5775590U Expired - Fee Related JP2515213Y2 (en) | 1990-05-31 | 1990-05-31 | Step motor control shutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2515213Y2 (en) |
-
1990
- 1990-05-31 JP JP5775590U patent/JP2515213Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2515213Y2 (en) | 1996-10-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |