JPH0538311Y2 - - Google Patents
Info
- Publication number
- JPH0538311Y2 JPH0538311Y2 JP1986008154U JP815486U JPH0538311Y2 JP H0538311 Y2 JPH0538311 Y2 JP H0538311Y2 JP 1986008154 U JP1986008154 U JP 1986008154U JP 815486 U JP815486 U JP 815486U JP H0538311 Y2 JPH0538311 Y2 JP H0538311Y2
- Authority
- JP
- Japan
- Prior art keywords
- egg
- wall portion
- tube
- pipe
- resin
- 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 - Lifetime
Links
- 229920003023 plastic Polymers 0.000 claims description 19
- 239000004033 plastic Substances 0.000 claims description 19
- 229920005989 resin Polymers 0.000 claims description 19
- 239000011347 resin Substances 0.000 claims description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 210000002310 elbow joint Anatomy 0.000 description 4
- 239000012530 fluid Substances 0.000 description 2
- 229920013716 polyethylene resin Polymers 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、屈曲性および捩れ性を備え、特に下
水配管として好適に使用できる卵形プラスチツク
管に関する。[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to an oval plastic pipe that has flexibility and twistability and is particularly suitable for use as sewage piping.
（従来技術およびその問題点）
断面が卵形状を有するプラスチツク管（以下、
単に「卵形プラスチツク管」という）は、小流量
時でも水嵩が増し、通常の真円管が用いた場合よ
りも管内流速が速くなるので、汚物等の固形物が
管底部に沈積するのを防止することができるとい
う利点がある。このため、この種卵形プラスチツ
ク管は下水配管として広く使用されるに至つてい
る。(Prior art and its problems) A plastic tube with an egg-shaped cross section (hereinafter referred to as
Egg-shaped plastic tubes (simply referred to as ``egg-shaped plastic tubes'') increase the volume of water even when the flow rate is small, and the flow velocity inside the tube is faster than when a normal round tube is used, so it prevents solid matter such as filth from settling at the bottom of the tube. This has the advantage of being preventable. For this reason, this type of oval plastic pipe has come to be widely used as sewage piping.
ところで、従来の卵形プラスチツク管は塩化ビ
ニル樹脂等の硬質樹脂からなつており、屈曲性を
備えていないために管の曲り部ではエルボ継手等
を用いて接続していた。 By the way, conventional egg-shaped plastic pipes are made of hard resin such as vinyl chloride resin and do not have flexibility, so elbow joints or the like are used to connect the pipes at bends.
しかしながら、管の曲り部を曲率半径の小さい
エルボ継手等を用いて接続したのでは、流速が弱
められることになり、卵形管の特徴が損われて汚
物等の固形物が沈積するという問題があつた。 However, if the bent part of the pipe is connected using an elbow joint with a small radius of curvature, the flow velocity will be weakened, the characteristics of the oval pipe will be impaired, and solid matter such as filth will accumulate. It was hot.
また、この卵形プラスチツクの配管施工の際に
は、第３図に示す如く頂壁部の円弧中心O1と底
壁部の円弧中心O2とが垂直になるようにセツト
して接続しているが、ある一定区間を接続した卵
形プラスチツク管の一端部P1と、他方の一定区
間を接続した卵形プラスチツク管の一端部P2と
を管継手を介して接続する際に、一方の管端部
P2が垂直に対して僅かな角度θだけ傾いている
だけでも管同志の接続が行なえないという施工上
の問題があつた。 In addition, when constructing this egg-shaped plastic piping, the arc center O1 of the top wall section and the arc center O2 of the bottom wall section should be set and connected so that they are perpendicular to each other, as shown in Fig. 3. However, when connecting one end P 1 of an egg-shaped plastic tube connecting a certain section to one end P 2 of the egg-shaped plastic tube connecting the other certain section via a pipe joint, it is necessary to tube end
There was a construction problem in that the pipes could not be connected even if P 2 was tilted by a small angle θ with respect to the vertical.
本考案は、かかる従来の卵形プラスチツク管の
欠点を解消したものであつて、管に屈曲性を付与
することによつてエルボ継手等の曲り継手を必要
とすることなく管同志が接続でき、また管を捩る
ことによつて管を垂直状態に修正して管同志を簡
単に接続できる卵形プラスチツク管を提供するも
のである。 The present invention solves the drawbacks of the conventional egg-shaped plastic pipes, and by imparting flexibility to the pipes, pipes can be connected without the need for bending joints such as elbow joints. Another object of the present invention is to provide an egg-shaped plastic tube in which the tubes can be corrected to a vertical state by twisting the tubes and the tubes can be easily connected to each other.
（問題を解決するための手段）
本考案のプラスチツク管は、大径円弧の頂壁部
１と小径円弧の底壁部２とが緩かな円弧の側壁部
３で連続した断面卵形状を有しており、この管全
体を軟質樹脂で形成すると共に、頂壁部１および
底壁部２にのみ硬質樹脂からなる補強層４を設け
たことを特徴とするものである。(Means for Solving the Problem) The plastic tube of the present invention has an egg-shaped cross section in which a top wall portion 1 of a large diameter arc and a bottom wall portion 2 of a small diameter arc are continuous with a side wall portion 3 of a gentle arc. This tube is characterized in that the entire tube is made of a soft resin, and a reinforcing layer 4 made of a hard resin is provided only on the top wall portion 1 and the bottom wall portion 2.
以下、本考案の具体的構成を実施例に基づいて
詳細に説明する。 Hereinafter, the specific configuration of the present invention will be explained in detail based on examples.
（実施例）
第１図は本考案の一実施例を示す縦断面正面
図、第２図は他の実施例を示す縦断面正面図であ
る。(Example) FIG. 1 is a vertical cross-sectional front view showing one embodiment of the present invention, and FIG. 2 is a vertical cross-sectional front view showing another embodiment.
プラスチツク管Ｐは、大径円弧の頂壁部１と小
径円弧の底壁部２とが緩かな円弧の側壁部３で連
続した断面卵形状を有しており、頂壁部１の曲率
半径R1、底壁部２の曲率半径R2および側壁部３
の曲率半径R3は、R2＜R1＜R3となつている。 The plastic tube P has an egg-shaped cross section in which a top wall 1 having a large diameter arc and a bottom wall 2 having a small diameter arc are continuous with a side wall 3 having a gentle arc, and the radius of curvature R of the top wall 1 is 1 , radius of curvature R 2 of bottom wall 2 and side wall 3
The radius of curvature R 3 is such that R 2 < R 1 < R 3 .
本考案の卵形プラスチツク管Ｐは、管全体を軟
質樹脂で形成して管に水平方向の屈曲性と、捩れ
性を付与し、頂壁部１および底壁部２にのみ硬質
樹脂からなる補強層４を設けて、土圧をうけたと
きに当該部分がみだりに変形することなく卵形状
を維持できるようにしたものである。 The egg-shaped plastic tube P of the present invention has the entire tube made of soft resin to give the tube horizontal flexibility and twistability, and only the top wall 1 and bottom wall 2 are reinforced with hard resin. Layer 4 is provided so that the egg shape can be maintained without undue deformation of the part when subjected to earth pressure.
補強層４の厚み、および幅寸法は、この趣旨に
照して適宜設定することができるものであり、こ
の補強層４は管の外周壁側（第１図参照）に設け
てもよく、内周壁側（第２図参照）に設けてもよ
い。第２図に示した如く、管の内周壁側に補強層
４を設けた場合には、流体中に混入している固形
物によつて管内周壁が摩耗損失するのを防止でき
るという利点がある。 The thickness and width of the reinforcing layer 4 can be set as appropriate with this purpose in mind. It may also be provided on the peripheral wall side (see Figure 2). As shown in FIG. 2, when the reinforcing layer 4 is provided on the inner circumferential wall of the pipe, there is an advantage that the inner circumferential wall of the pipe can be prevented from being abraded and lost due to solid matter mixed in the fluid. .
なお、本考案に用いられる樹脂としては、塩化
ビニル樹脂、ポリエチレン樹脂等の熱可塑性樹脂
が挙げられるが、管全体を形成する軟質樹脂と補
強層４を形成する硬質樹脂とは、同種の樹脂であ
つても、異種の樹脂を組み合わせたものであつて
もよい。例えば、管全体を軟質塩化ビニル樹脂で
形成し、補強層４を硬質塩化ビニル樹脂で形成し
てもよく、また管全体をポリエチレン樹脂で形成
し、補強層４を硬質塩化ビニル樹脂で形成しても
よい。 Note that the resin used in the present invention includes thermoplastic resins such as vinyl chloride resin and polyethylene resin, but the soft resin that forms the entire pipe and the hard resin that forms the reinforcing layer 4 are of the same type. It may also be a combination of different types of resins. For example, the entire pipe may be made of soft vinyl chloride resin and the reinforcing layer 4 made of hard vinyl chloride resin, or the entire pipe may be made of polyethylene resin and the reinforcing layer 4 made of hard vinyl chloride resin. Good too.
（考案の作用および効果）
以上詳述した如く、本考案の卵形プラスチツク
管は、管全体を軟質樹脂で形成して管に水平方向
の屈曲性と捩れ性を付与し、管の頂壁部と底壁部
にのみ硬質樹脂からなる補強層４を設けて、土圧
をうけたときに当該部分がみだりに変形すること
なく卵形状を維持できるようにしたものである。(Operations and Effects of the Invention) As detailed above, the egg-shaped plastic tube of the present invention has the entire tube made of soft resin to give the tube horizontal flexibility and twistability, and the top wall of the tube A reinforcing layer 4 made of hard resin is provided only on the bottom wall portion, so that the egg shape can be maintained without undue deformation of this portion when subjected to earth pressure.
従つて、この卵形プラスチツク管を使用すれば
エルボ継手等を用いなくても屈曲配管が可能とな
り、大きな曲率半径で屈曲させると管内流体の流
速が低下することもないので、汚物等の固形物が
管底部に沈積することもない。 Therefore, if this egg-shaped plastic pipe is used, it is possible to make bent pipes without using elbow joints, etc., and when bent with a large radius of curvature, the flow velocity of the fluid inside the pipe does not decrease, so solids such as filth can be easily bent. will not be deposited at the bottom of the tube.
また、管を捩じることによつて、簡単に管を垂
直状態に修正できるので、管同志の接続が極めて
簡単に行なえる。 Furthermore, since the tubes can be easily adjusted to a vertical position by twisting them, the tubes can be connected together extremely easily.
しかも、管の頂点壁部と底壁部にのみ硬質樹脂
からなる補強層を設けたので、部分的に配管が撓
むこともなく、常に一定の勾配で配管接続するこ
とができる。従つて、配管の一部が撓んで汚物等
の固形物が沈積する恐れもない。 Furthermore, since the reinforcing layer made of hard resin is provided only on the apex wall and the bottom wall of the pipe, the pipe does not bend partially, and the pipe can always be connected at a constant slope. Therefore, there is no fear that a portion of the piping will bend and solid matter such as dirt will accumulate.
第１図は本考案の一実施例を示す縦断面正面
図、第２図は他の実施例を示す縦断面正面図、第
３図は配管の接続状態を説明した概略正面図であ
る。
１……頂壁部、２……底壁部、３……側壁部、
４……補強層、Ｐ……卵形プラスチツク管。
FIG. 1 is a vertical cross-sectional front view showing one embodiment of the present invention, FIG. 2 is a vertical cross-sectional front view showing another embodiment, and FIG. 3 is a schematic front view illustrating the connection state of piping. 1...Top wall part, 2...Bottom wall part, 3...Side wall part,
4... Reinforcement layer, P... Oval plastic tube.
Claims (1)
緩かな円弧の側壁部３で接続した断面卵形状を有
するプラスチツク管であつて、該管全体を軟質樹
脂で形成すると共に、前記頂壁部１および底壁部
２にのみ硬質樹脂からなる補強層４を設けたこと
を特徴とする卵形プラスチツク管。 It is a plastic tube having an egg-shaped cross section in which a top wall portion 1 having a large diameter arc and a bottom wall portion 2 having a small diameter arc are connected by a side wall portion 3 having a gentle arc, and the entire tube is made of a soft resin. An oval plastic tube characterized in that a reinforcing layer 4 made of hard resin is provided only on the top wall portion 1 and the bottom wall portion 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986008154U JPH0538311Y2 (en) | 1986-01-23 | 1986-01-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986008154U JPH0538311Y2 (en) | 1986-01-23 | 1986-01-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62121486U JPS62121486U (en) | 1987-08-01 |
| JPH0538311Y2 true JPH0538311Y2 (en) | 1993-09-28 |
Family
ID=30792270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986008154U Expired - Lifetime JPH0538311Y2 (en) | 1986-01-23 | 1986-01-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0538311Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4778269B2 (en) * | 2005-06-10 | 2011-09-21 | 株式会社ブリヂストン | Fluid transport tube |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49655U (en) * | 1972-04-03 | 1974-01-07 | ||
| JPS6159226A (en) * | 1984-08-31 | 1986-03-26 | Kyushu Hitachi Maxell Ltd | Temperature measuring device |
-
1986
- 1986-01-23 JP JP1986008154U patent/JPH0538311Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49655U (en) * | 1972-04-03 | 1974-01-07 | ||
| JPS6159226A (en) * | 1984-08-31 | 1986-03-26 | Kyushu Hitachi Maxell Ltd | Temperature measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62121486U (en) | 1987-08-01 |
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