JPH0427436U - - Google Patents
Info
- Publication number
- JPH0427436U JPH0427436U JP6729290U JP6729290U JPH0427436U JP H0427436 U JPH0427436 U JP H0427436U JP 6729290 U JP6729290 U JP 6729290U JP 6729290 U JP6729290 U JP 6729290U JP H0427436 U JPH0427436 U JP H0427436U
- Authority
- JP
- Japan
- Prior art keywords
- power transmission
- rotational power
- switching
- transmission
- driven shaft
- 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
- 230000005540 biological transmission Effects 0.000 claims description 17
- 238000010586 diagram Methods 0.000 description 3
- 230000011514 reflex Effects 0.000 description 1
Landscapes
- Focusing (AREA)
- Lens Barrels (AREA)
- Gear-Shifting Mechanisms (AREA)
Description
第１図は本考案に係る動力伝達切換装置の一実
施例を示す動作説明図、第２図は本考案を適用し
て好適なレンズ交換型のＡＦ／ＭＦ式一眼レフカ
メラのレンズ駆動系の概略構成を示す系統図、第
３図および第４図は従来例を説明するための正面
図およびその断面図、第５図ないし第７図はその
動作説明図である。
１１……レンズ駆動制御用ＣＰＵ、１２……Ａ
Ｆ駆動用モータ、１３……モータ駆動力伝達系、
１４……撮影レンズ系、１５……クラツチ、１６
……モード切換え部材、１７……マニユアルフオ
ーカス操作リング、１８……駆動力伝達系、２１
……回転軸（被駆動軸）、２２……出力歯車、２
４，２５……入力歯車（第１および第２の回転動
力伝達部材）、２６……スリーブ部材、２７……
クラツチリング（伝達方向切換部材）、３０，３
９……固定軸、３１……クラツチレバー（切換え
手段）、３２……切換伝達板、３８……切換えレ
バー。
FIG. 1 is an operational explanatory diagram showing an embodiment of the power transmission switching device according to the present invention, and FIG. 2 is a diagram illustrating the lens drive system of a preferable interchangeable lens AF/MF single-lens reflex camera to which the present invention is applied. FIGS. 3 and 4 are a front view and sectional view for explaining the conventional example, and FIGS. 5 to 7 are diagrams for explaining its operation. 11... CPU for lens drive control, 12...A
F drive motor, 13...Motor drive force transmission system,
14...Photographing lens system, 15...Clutch, 16
...Mode switching member, 17...Manual focus operation ring, 18...Driving force transmission system, 21
... Rotating shaft (driven shaft), 22 ... Output gear, 2
4, 25...Input gear (first and second rotational power transmission members), 26...Sleeve member, 27...
Clutch ring (transmission direction switching member), 30, 3
9...Fixed shaft, 31...Clutch lever (switching means), 32...Switching transmission plate, 38...Switching lever.
Claims (1)
被駆動軸に選択的に切換えて伝達する動力伝達切
換装置において、 前記被駆動軸上で相対向して回転自在に軸支さ
れる前記電動モータからの回転伝達を受ける第１
の回転動力伝達部材および手動操作に伴なつて回
転伝達を受ける第２の回転動力伝達部材と、 前記被駆動軸上で軸線方向に摺動動作可能に設
けられるとともに回転方向において連結されかつ
前記第１および第２の回転動力伝達部材に対して
選択的に係合、離脱する係合部を有してなる伝達
方向切換部材と、 この伝達方向切換部材を被駆動軸上で切換え動
作させる切換え手段とを備えてなり、 この切換え手段により前記伝達方向切換部材を
前記第１の回転動力伝達部材との係合状態から離
脱させる際に、前記電動モータを正、逆両方向に
微小回転駆動させる制御手段を設けたことを特徴
とする動力伝達切換装置。[Scope of claim for utility model registration] Rotational power generated by an electric motor or manual operation,
In a power transmission switching device that selectively switches and transmits power to a driven shaft, the first motor receives rotational transmission from the electric motor rotatably supported opposite to each other on the driven shaft.
a rotational power transmission member and a second rotational power transmission member that receives rotational power transmission in accordance with manual operation; a transmission direction switching member having an engaging portion that selectively engages and disengages from the first and second rotational power transmission members; and a switching means for switching and operating the transmission direction switching member on a driven shaft. and a control means for driving the electric motor to rotate minutely in both forward and reverse directions when the switching means disengages the transmission direction switching member from the engagement state with the first rotational power transmission member. A power transmission switching device characterized by being provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6729290U JPH0427436U (en) | 1990-06-27 | 1990-06-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6729290U JPH0427436U (en) | 1990-06-27 | 1990-06-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0427436U true JPH0427436U (en) | 1992-03-04 |
Family
ID=31600741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6729290U Pending JPH0427436U (en) | 1990-06-27 | 1990-06-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0427436U (en) |
-
1990
- 1990-06-27 JP JP6729290U patent/JPH0427436U/ja active Pending
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