JPS61206942U

JPS61206942U -

Info

Publication number: JPS61206942U
Application number: JP9065685U
Authority: JP
Priority date: 1985-06-14
Filing date: 1985-06-14
Publication date: 1986-12-27

Description

[Brief explanation of the drawing]

図面は、本考案を２焦点カメラのレンズ駆動装
置に適用した実施例を示し、第１図は、カメラの
外観を示す斜視図、第２図イ，ロは、カメラの縦
断側面図、第３図は、カメラ内部の分解斜視図、
第４図は、カメラの横断平面図、第５図は、固定
遮光筒と可動遮光筒との支持状態を示す正面図、
第６図イ〜ハは、ギア機構の動きを示す作動図、
第７図は、Ｓ−Ｔ切換用モャタの駆動回路図、第
８図イ，ロは、副レンズの作動を示す背面図、第
９図はバネ手段の設置状態を示す要部斜視図であ
る。３６……モーター、３６ａ……モーター軸、Ｓ
Ｐ……バネ手段。 The drawings show an embodiment in which the present invention is applied to a lens drive device for a bifocal camera. Fig. 1 is a perspective view showing the external appearance of the camera, Fig. 2 A and B are longitudinal side views of the camera, and Fig. 3 is a vertical side view of the camera. The figure shows an exploded perspective view of the inside of the camera.
FIG. 4 is a cross-sectional plan view of the camera, and FIG. 5 is a front view showing the supported state of the fixed light-shielding tube and the movable light-shielding tube.
6A to 6C are operation diagrams showing the movement of the gear mechanism,
Fig. 7 is a drive circuit diagram of the S-T switching motor, Fig. 8 A and B are rear views showing the operation of the sub-lens, and Fig. 9 is a perspective view of the main parts showing the installation state of the spring means. . 36...Motor, 36a...Motor shaft, S
P...Spring means.

Claims

[Claims for Utility Model Registration] 1. A drive mechanism that moves a desired device by rotation of a motor and stops the movement at a predetermined position, which is installed on the motor shaft of the motor or between the motor shaft and the device. A braking device characterized in that a spring means is provided in elastic contact with a rotating shaft rotated by the rotation of the motor, and the resistance of the spring means stabilizes the stopping of the device at a desired position. 2. The braking device according to claim 1, wherein the spring means is a torsion spring, and the motor shaft or rotation shaft is clamped at both ends thereof. 3. A utility model characterized in that the optional device is a lens barrel of a camera, and the lens barrel moves between a normal position and an extended position with respect to the camera, and is stopped and held in both of the above positions. A braking device according to registered claim 1.