JPS63128542U - - Google Patents
Info
- Publication number
- JPS63128542U JPS63128542U JP1987019314U JP1931487U JPS63128542U JP S63128542 U JPS63128542 U JP S63128542U JP 1987019314 U JP1987019314 U JP 1987019314U JP 1931487 U JP1931487 U JP 1931487U JP S63128542 U JPS63128542 U JP S63128542U
- Authority
- JP
- Japan
- Prior art keywords
- worm
- rotation mechanism
- screen
- screen device
- upper column
- 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
- 239000011888 foil Substances 0.000 claims description 3
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Description
第１図は本考案の一実施例のスクリーン装置に
おける回転機構部の断面図で、第２図のＡ方向矢
視図、第２図は同じくスクリーン装置の全体図で
ある。
１：スクリーン、２：上部柱体、３：ウオーム
ホイル、４：ウオーム、５：回転機構部、６：下
部柱体、９：支持体、１０：支軸、１１：筒状体
、１２：止めねじ、１３：調節支持体、１５：コ
イルばね、１７：ハンドル。
FIG. 1 is a sectional view of a rotation mechanism in a screen device according to an embodiment of the present invention, a view taken in the direction of arrow A in FIG. 2, and FIG. 2 is an overall view of the screen device. 1: Screen, 2: Upper column, 3: Worm foil, 4: Worm, 5: Rotation mechanism, 6: Lower column, 9: Support, 10: Support shaft, 11: Cylindrical body, 12: Stop Screw, 13: Adjustment support, 15: Coil spring, 17: Handle.
Claims (1)
体の下端部に、ウオームホイルとウオームとを有
する回転機構部を備え、該回転機構部がその支持
体を介して下部柱体の上端部に装着され、前記ウ
オームを回転操作して前記ウオームホイルを回動
させることにより前記上部柱体の傾角を変化させ
、前記スクリーンを所定の位置に設定する構成の
スクリーン装置において、前記回転機構部に、一
端が前記ウオームホイルに他端が前記回転機構部
の支持体側にそれぞれに支持されたコイルばねを
具備し、該コイルばねをひねり込んだ状態に設置
することにより、前記上部柱体を上向きに起立す
るように傾角を変化させる際に前記ウオームの回
転操作荷重が軽減される構成になつていることを
特徴とするスクリーン装置。 The lower end of the upper column that supports the upper end of the screen at its tip is equipped with a rotation mechanism having a worm foil and a worm, and the rotation mechanism is attached to the upper end of the lower column via its support. In the screen device configured to rotate the worm and rotate the worm wheel to change the inclination angle of the upper column and set the screen at a predetermined position, the rotation mechanism section has one end. is provided with a coil spring, the other end of which is supported on the support body side of the rotation mechanism part, on the worm foil, and by installing the coil spring in a twisted state, the upper column body is erected upward. A screen device characterized in that the screen device is configured such that when changing the inclination angle, the rotational operation load of the worm is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987019314U JPH0442833Y2 (en) | 1987-02-12 | 1987-02-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987019314U JPH0442833Y2 (en) | 1987-02-12 | 1987-02-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63128542U true JPS63128542U (en) | 1988-08-23 |
| JPH0442833Y2 JPH0442833Y2 (en) | 1992-10-09 |
Family
ID=30813805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987019314U Expired JPH0442833Y2 (en) | 1987-02-12 | 1987-02-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0442833Y2 (en) |
-
1987
- 1987-02-12 JP JP1987019314U patent/JPH0442833Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0442833Y2 (en) | 1992-10-09 |
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