JPS5834426Y2 - Asia You Screen Maxine Pipe - Google Patents
Asia You Screen Maxine PipeInfo
- Publication number
- JPS5834426Y2 JPS5834426Y2 JP1975041212U JP4121275U JPS5834426Y2 JP S5834426 Y2 JPS5834426 Y2 JP S5834426Y2 JP 1975041212 U JP1975041212 U JP 1975041212U JP 4121275 U JP4121275 U JP 4121275U JP S5834426 Y2 JPS5834426 Y2 JP S5834426Y2
- Authority
- JP
- Japan
- Prior art keywords
- screen
- tip
- pipe body
- outer periphery
- pipe
- 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.)
- Expired
Links
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Description
【考案の詳細な説明】
本考案は映写用等の巻込式スクリーンにおいて、巻収し
たスクリーンにスクリーン先端の厚みによる段がつかな
いようにしたスクリーンの巻芯パイプに関するものであ
る。[Detailed Description of the Invention] The present invention relates to a winding core pipe for a roll-up screen for projection, etc., which prevents the rolled-up screen from forming steps due to the thickness of the tip of the screen.
従来のこの種のスクリーンの巻芯パイプにおいては、パ
イプ体にスクリーンの先端を固着して直接その外周部に
スクリーンを巻収するものが一般的であったからこのよ
うな巻芯パイプにスクリーンを巻収すると、スクリーン
先端の厚みの上に2巻目以降のスクリーンが順次巻き重
ねられていく為にスクリーン先端の厚みの段差が巻芯パ
イプの1周毎にスクリーン面につき、その為スクリーン
を引き出したときに横方向に凹凸状のしわを生じてスク
リーン面を歪形させる欠点がある。In conventional core pipes for this kind of screen, it was common to fix the tip of the screen to the pipe body and wind the screen directly around the outer circumference of the pipe, so it was not possible to wind the screen around this type of core pipe. When the screen is unloaded, the second and subsequent rolls of screen are sequentially rolled on top of the thickness at the tip of the screen, so the difference in thickness at the tip of the screen touches the screen surface each time the core pipe goes around, which makes it difficult to pull out the screen. It has the disadvantage that it sometimes produces uneven wrinkles in the lateral direction, distorting the screen surface.
これを防止する為に巻軸の周面にスリット状の長孔を形
成したり、又は周面の一部を削り取って凹部を形成する
こと等が知られているが、中空パイプの周面にこのよう
な加工を行なうと曲げや撓みに対する強度が著るしく損
われ、実用的でない欠点がある。In order to prevent this, it is known to form a slit-like long hole on the circumferential surface of the winding shaft, or to form a recess by scraping a part of the circumferential surface. If such processing is carried out, the strength against bending and deflection will be significantly impaired, making it impractical.
本考案はこのような従来の欠点に対処したものであって
、以下にその詳細を図面の実施例について説明する。The present invention addresses such conventional drawbacks, and details thereof will be described below with reference to embodiments shown in the drawings.
図において、1はスクリーン巻収用の巻芯パイプ体であ
って、所要の径と長さを有し、その外周一部には幅方向
全長に亙り段落部2を一体に形成する。In the figure, reference numeral 1 denotes a core pipe body for screen winding, which has a required diameter and length, and a stepped portion 2 is integrally formed on a part of its outer periphery over the entire length in the width direction.
この段落部2はパイプ体1の外周一部をプレス等の押圧
でスクリーン3の厚さに相当する深さ分窪ませて形成さ
れるものである。The stepped portion 2 is formed by recessing a part of the outer periphery of the pipe body 1 by a depth corresponding to the thickness of the screen 3 by pressing with a press or the like.
そしてこの段落部2の谷部2aにスクリーン3の先端部
3aを接着して段落部の山部2bとスクリーン3の先端
部3aの外面とが面一になるようにする。Then, the tip 3a of the screen 3 is bonded to the trough 2a of the stepped portion 2 so that the peak 2b of the stepped portion and the outer surface of the tip 3a of the screen 3 are flush with each other.
このようにしてパイプ体1にスクリーン3の先端部3a
を一体に固着した後にパイプ体1を右方向へ回動させる
とスクリーン3は第2図に示すように巻芯パイプ体1の
外周部に巻収されていくが、スクリーン先端部3aは段
落部2に落ち込んだ格好となってその上に2巻目以降の
スクリーンが順次巻き重ねられるので鉄部におけるスク
リーン面には全く段を生じない。In this way, the tip 3a of the screen 3 is attached to the pipe body 1.
When the pipe body 1 is rotated to the right after being fixed together, the screen 3 is wound around the outer periphery of the core pipe body 1 as shown in FIG. Since the second and subsequent screens are successively rolled on top of each other, there is no step at all on the screen surface in the iron part.
又スリット等ヘスク1−ン先端部を挾み込まないので極
端な屈曲も生じない。Further, since the tip of the hesk 1, such as a slit, is not inserted, extreme bending does not occur.
本考案は上述のように、パイプ体1の外周一部を窪ませ
て鉄部に連続した面の段落部2を形成し、その段落部の
谷部2aにスクリーン先端部3aを接着して段落部の山
部2bとスクリーン先端部の外面とを面一に形成したの
で、スクリーンを段落のない平らな円弧面に接して巻装
できるもので、このようなスクリーン巻芯パイプを従来
のように強度を損なう切目やスリット状長孔、凹部等の
加工を行なうことなく段落部のみの形成で、しかもそれ
が補強リブの役目をして曲げや撓みに対する強度を高め
、製作加工も簡単で安価に実施できるものである。As described above, the present invention involves recessing a part of the outer periphery of the pipe body 1 to form a step section 2 with a continuous surface to the iron section, and bonding the screen tip 3a to the valley section 2a of the step section. Since the peak part 2b of the screen and the outer surface of the tip of the screen are formed flush with each other, the screen can be wound in contact with a flat circular arc surface with no steps, and such a screen winding core pipe can be wound in a similar way to the conventional one. Only the step part is formed without machining such as cuts, slit-like long holes, or recesses that impair strength, and these serve as reinforcing ribs to increase strength against bending and deflection, making manufacturing easy and inexpensive. It is something that can be implemented.
第1図は本考案巻芯パイプの一部の斜視図、第2図はス
クリーンを巻取した状態のパイプ体の断面図である。
1・・・・・・パイプ体、2・・・・・・段落部、3・
・・・・・スクリーン、2a・・・・・・谷部、2b・
・・・・・山部、3a・・・・・・先端部。FIG. 1 is a perspective view of a part of the core pipe of the present invention, and FIG. 2 is a sectional view of the pipe body with a screen wound thereon. 1... Pipe body, 2... Paragraph section, 3.
...Screen, 2a...Tanibe, 2b.
...Mountain part, 3a...Tip part.
Claims (1)
1の外周部に接着して該パイプ体の回動によってパイプ
体外周部にスクリーンを巻収するようにしたスクリーン
において、前記パイプ体1の外周一部をその幅方向全長
に亙リスクリーンの厚さに相当する深さ分窪ませて鉄部
に連続した面の段落部2を形成し、この段落部の谷部2
aに前記スクリーン3の先端部3aを接着して段落部2
の山部2bとスクリーン先端部の外面とを面一にしたこ
とを特徴とするスクリーンの巻芯パイプ。In the screen in which the tip of the screen 3 is adhered to the outer periphery of the core pipe body 1 for winding the screen, and the screen is wound around the outer periphery of the pipe body by rotation of the pipe body, A part of the outer periphery is recessed along its entire length in the width direction by a depth corresponding to the thickness of the rescreen to form a stepped part 2 with a continuous surface to the iron part, and the valley part 2 of this stepped part is recessed.
The tip part 3a of the screen 3 is glued to the stepped part 2.
A screen core pipe characterized in that the peak portion 2b and the outer surface of the screen tip are flush with each other.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1975041212U JPS5834426Y2 (en) | 1975-03-26 | 1975-03-26 | Asia You Screen Maxine Pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1975041212U JPS5834426Y2 (en) | 1975-03-26 | 1975-03-26 | Asia You Screen Maxine Pipe |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS51120134U JPS51120134U (en) | 1976-09-29 |
JPS5834426Y2 true JPS5834426Y2 (en) | 1983-08-02 |
Family
ID=28168251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1975041212U Expired JPS5834426Y2 (en) | 1975-03-26 | 1975-03-26 | Asia You Screen Maxine Pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5834426Y2 (en) |
-
1975
- 1975-03-26 JP JP1975041212U patent/JPS5834426Y2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS51120134U (en) | 1976-09-29 |
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