JPH0423798U

JPH0423798U -

Info

Publication number: JPH0423798U
Application number: JP6505490U
Authority: JP
Priority date: 1990-06-20
Filing date: 1990-06-20
Publication date: 1992-02-26
Anticipated expiration: 2005-06-20
Also published as: JPH0738638Y2

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例による大型表示装
置用シヤツタの下限自動停止装置を説明するため
の正面図、第２図は第１図の−線断面図、第
３図は第２図のシヤツタケース部分の拡大断面図
、第４図は第３図の−線断面図、第５図は従
来の大型表示装置用シヤツタの下限自動停止装置
を説明するための正面図、第６図は第５図の−
線断面図、第７図は第５図の部分的斜視図であ
る。２……表示画面、３……シヤツタ、７……ドラ
ム、８……吊り索（吊下げワイヤーロープ）、１
０……ドラム駆動手段（モータ）、１１……シヤ
ツタ下限位置検出機構、１１ａ……可動接触子。
なお、図中、同一符号は同一、又は相当部分を示
す。 Fig. 1 is a front view for explaining a lower limit automatic stop device for a shutter for a large display device according to an embodiment of this invention, Fig. 2 is a sectional view taken along the line - - of Fig. 4 is an enlarged sectional view of the shutter case portion, FIG. 4 is a sectional view taken along the - line in FIG. 3, FIG. Figure -
The line sectional view, FIG. 7, is a partial perspective view of FIG. 5. 2... Display screen, 3... Shutter, 7... Drum, 8... Hanging rope (hanging wire rope), 1
0...Drum driving means (motor), 11...Shutter lower limit position detection mechanism, 11a...Movable contact.
In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

A large display device comprising a shutter for opening and closing a display screen of the large display device, a drum around which a hanging rope for suspending the shutter is wrapped, and a drum drive means for opening and closing the shutter for driving the drum in forward and reverse rotation. The lower limit automatic stopping device for a shutter for use in a commercial vehicle has a movable contact that is in constant contact with the hanging rope, and the hanging rope is wound up backward from the end position of the drum by rotational driving of the drum in the shutter closing direction. The shutter lower limit position detecting mechanism is provided for automatically stopping the drum driving means at the lower limit position of the shutter by causing the movable contact to follow and respond to the suspension rope moving in the radial direction of the drum. Lower limit automatic stop device for shutters for large display devices.