JPH01166308U - - Google Patents
Info
- Publication number
- JPH01166308U JPH01166308U JP6128888U JP6128888U JPH01166308U JP H01166308 U JPH01166308 U JP H01166308U JP 6128888 U JP6128888 U JP 6128888U JP 6128888 U JP6128888 U JP 6128888U JP H01166308 U JPH01166308 U JP H01166308U
- Authority
- JP
- Japan
- Prior art keywords
- idle gear
- cam surface
- lens drive
- locking member
- initial position
- 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
- 210000000078 claw Anatomy 0.000 description 1
Description
第１図は本考案に係るレンズ駆動機構の要部平
面図、第２図は従来のレンズ駆動機構の全体構成
を示す平面図、第３図ａ乃至ｃは従来のレンズ駆
動機構における第１図と同様な図であつて、ａは
初期位置にある状態、ｂは係合位置にある状態そ
してｃは中間位置にある状態を夫々示す平面図で
ある。
Ｍ……ステツピングモータ、２……駆動リング
、３……レンズ駆動リング、８……アイドルギヤ
、１０……ラチエツト歯部、１０ｂ……ラチエツ
ト歯、１０ｄ……作動歯、１１……係止レバー、
１１ｂ……爪部、１１ｄ……カム面、１５……電
磁石。
FIG. 1 is a plan view of essential parts of the lens drive mechanism according to the present invention, FIG. 2 is a plan view showing the overall configuration of a conventional lens drive mechanism, and FIGS. 3 a to 3 c are first views of the conventional lens drive mechanism. FIG. 3 is a plan view similar to that shown in FIG. M... Stepping motor, 2... Drive ring, 3... Lens drive ring, 8... Idle gear, 10... Ratchet tooth, 10b... Ratchet tooth, 10d... Operating tooth, 11... Locking lever,
11b...claw portion, 11d...cam surface, 15...electromagnet.
Claims (1)
と減速機構を介して連結された駆動部材と、焦点
調節機構と連結されていて前記駆動部材に連動し
て駆動されるレンズ駆動部材と、該レンズ駆動部
材と連結されたアイドルギヤと、電磁石により制
御されて前記アイドルギヤと係合する係止部材と
を備えていて、 前記アイドルギヤ上に係止部材との相対位置に
おいて前記ステツピングモータの２ステツプ分離
れて初期位置とズレ防止用の係合位置とを設け、
前記アイドルギヤが初期位置又は係合位置の何れ
にあつても初期位置設定せしめられるようにした
レンズ駆動機構において、 前記係止部材に傾斜角の小さいカム面を形成せ
しめ、前記アイドルギヤに前記カム面を押動し得
る歯たけの高い作動歯を形成すると共に、 前記係合位置にあるアイドルギヤが初期位置へ
回動せしめられる間に前記作動歯がカム面を押動
せしめて係止部材を前記アイドルギヤとの係合を
解除せしめる位置に回動させるようにしたことを
特徴とするレンズ駆動機構。[Claims for Utility Model Registration] A stepping motor, a driving member connected to the stepping motor via a deceleration mechanism, and a lens drive connected to a focus adjustment mechanism and driven in conjunction with the driving member. a member, an idle gear connected to the lens drive member, and a locking member that is controlled by an electromagnet to engage the idle gear; An initial position and an engagement position for preventing slippage are provided two steps apart from each other for the stepping motor.
In the lens drive mechanism, the initial position can be set whether the idle gear is in the initial position or the engaged position, wherein the locking member is formed with a cam surface having a small inclination angle, and the idle gear is provided with the cam surface. The cam surface is formed with high-tooth operating teeth capable of pushing the cam surface, and while the idle gear in the engagement position is rotated to the initial position, the operating teeth push the cam surface to cause the locking member to move against the locking member. A lens drive mechanism characterized in that the lens drive mechanism is rotated to a position where engagement with an idle gear is released.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6128888U JPH0548168Y2 (en) | 1988-05-10 | 1988-05-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6128888U JPH0548168Y2 (en) | 1988-05-10 | 1988-05-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01166308U true JPH01166308U (en) | 1989-11-21 |
| JPH0548168Y2 JPH0548168Y2 (en) | 1993-12-21 |
Family
ID=31286964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6128888U Expired - Lifetime JPH0548168Y2 (en) | 1988-05-10 | 1988-05-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0548168Y2 (en) |
-
1988
- 1988-05-10 JP JP6128888U patent/JPH0548168Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0548168Y2 (en) | 1993-12-21 |