JP2004282998A

JP2004282998A - Trough with wave

Info

Publication number: JP2004282998A
Application number: JP2004112691A
Authority: JP
Inventors: Shohachi Shimizu; 昭八清水
Original assignee: Mirai Industry Co Ltd
Current assignee: Mirai Industry Co Ltd
Priority date: 2004-04-07
Filing date: 2004-04-07
Publication date: 2004-10-07
Anticipated expiration: 2021-03-23
Also published as: JP4246661B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a trough having high strength, light weight, and ease of handling. <P>SOLUTION: The trough consists of a base B receiving cables and a cover C covering the base B, the base B and the cover C are provided with protrusion parts 1, 2 of prescribed pitch in a width direction to be formed in a shape of irregularity along the lengthwise direction, further the pitch of each protrusion part of the base B and the cover C are equal or in a relation of integer multiples, a fitting part 3 appearing in an opening side of the protrusion part 1 of the cover C can be fitted to the outer side of a fitted part 4 appearing in an opening side of the protrusion part 2 of the base B. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、光ケーブル等の管やケーブル類を保護するために、特に屋外に敷設される樹脂製の波付トラフに関するものである。 The present invention relates to a corrugated trough made of resin, which is laid outdoors especially in order to protect tubes and cables such as optical cables.

景観をこわさずに美しく配管したり、風雨からケーブル類を保護するためのトラフとして、コンクリートや金属製のものが使用されていたが、それらには、重量が重いという欠点が有った。そこで、合成樹脂で軽量なトラフを成形して、その代りに使用することが実施されており、上記のコンクリート又は金属製のトラフの様々な欠点を解消することが可能であった。軽量な樹脂製のトラフは、長尺に成形しても運搬の負担が少なく、また、敷設作業時にトラフ同士の接続個所が少なくてすむので、作業の効率が良くなる。また、コンクリートや金属製のものと比較すると、その施工現場での切断等の加工が容易なので、作業性が良く、短い工期でトラフを新設又は更新したい場合には、樹脂製のものが便利に利用されている。また、金属製のもののように腐食の恐れが無いので、錆びる恐れのないトラフを使用したい場合や、配管工事の際に騒音を出したくない場合にも、優先して使用されている。 Concrete and metal troughs were used as beautiful troughs to protect the cables from the wind and rain without breaking the landscape, but they had the disadvantage of being heavy. Therefore, it has been practiced to mold a lightweight trough with a synthetic resin and use it instead, and it was possible to eliminate various drawbacks of the concrete or metal trough. Lightweight plastic troughs are less burdensome to transport even if they are molded into a long length, and the number of connection points between troughs is reduced during laying work, so work efficiency is improved. Compared to concrete or metal, it is easier to cut at the construction site, so workability is better, and if you want to install or renew a trough in a short construction period, a resin one is convenient. It's being used. Also, since there is no risk of corrosion unlike metal ones, it is used preferentially when you want to use troughs that do not rust, or when you do not want to make noise during piping work.

従来構成の樹脂製のケーブル類用のトラフは、予め施工現場で覆蓋された管状のトラフを敷設し、その中空部にケーブル類を引込んだり、又は上向きに開口したコの字形のベースの上にケーブル類を敷設し、その上から、下向き開口した例えば半管状のカバーを用いてベースに覆蓋する「落し込み」という方法で、ケーブル類を保護するために用いられていた。 The trough for resin cables with a conventional configuration is constructed by laying a tubular trough previously covered at the construction site and pulling the cables into the hollow part or on the U-shaped base opened upward The cable has been used to protect the cable by a method of “dropping” by laying the cable on the base and covering the base with, for example, a semi-tubular cover opened downward.

このような樹脂製のトラフにおいては、その長手方向に沿って平板状のものが使用されていたので、金属やコンクリート材と比較すると強度的に弱く、それを保つためには、トラフの板厚を厚くするしかなく、そうすると重量が重くなるので樹脂製の利点を損ない、運搬や作業性において問題であった。また、「落し込み」配線するためには、ベースとカバーを別々に成形しなければならないので、コスト的に大きくなるという問題点があった。 In such a resin trough, a flat plate was used along its longitudinal direction, so it was weak in strength compared to metal and concrete materials. However, since the weight becomes heavier, the advantages of the resin are impaired, and there is a problem in transportation and workability. In addition, in order to perform “drop” wiring, the base and the cover must be formed separately, which increases the cost.

本発明は、上記したような諸問題に鑑み、強度が高くて、軽量で取扱い易いトラフの提供を課題としている。 In view of the above-described problems, an object of the present invention is to provide a trough that is strong, lightweight, and easy to handle.

上記の課題を解決するための請求項１の発明は、ケーブル類を収容するベースと、該ベースに覆蓋されるカバーとから成るトラフであって、前記ベース及び前記カバーには、所定ピッチの凸部が幅方向に設けられて、長手方向に沿って凹凸状に形成され、しかも、ベース及びカバーの各凸部のピッチは、同一であるか、又は整数倍の関係にあって、前記カバーの凸部の開口側に臨む嵌合部は、前記ベースの凸部の開口側に臨む被嵌合部の外側に嵌合可能になっていることを特徴としている。 The invention of claim 1 for solving the above-mentioned problem is a trough comprising a base for housing cables and a cover covered with the base, and the base and the cover have convex pitches of a predetermined pitch. The portions are provided in the width direction and are formed in a concavo-convex shape along the longitudinal direction, and the pitches of the convex portions of the base and the cover are the same or in an integer multiple relationship, The fitting part that faces the opening side of the convex part can be fitted to the outside of the fitted part that faces the opening side of the convex part of the base.

請求項１の発明によれば、ベース及びカバーの双方が、その長手方向に沿って凹凸状に形成されていて、その肉厚を大きくしなくても、長手方向の曲げ強度、捩り強度等が大きくなり、トラフの重量を増さずにすむ。従って、ケーブル類を収容して、屋外で使用する場合において、太陽熱等による熱変形に対して強い構造になると共に、長尺で取り扱われる場合にも、その取り扱いが容易となる。また、カバーの嵌合部が、ベースの被嵌合部の外側に嵌合することにより、ベースに対してカバーが「傘」の役目をするので、トラフ内への雨水等の浸入を防ぐことができて、ケーブル類保護の信頼性が高くなる。 According to the first aspect of the present invention, both the base and the cover are formed in a concavo-convex shape along the longitudinal direction, and the bending strength, the torsional strength, etc. in the longitudinal direction can be obtained without increasing the wall thickness. Increases size and saves trough weight. Therefore, when the cables are accommodated and used outdoors, the structure is strong against thermal deformation due to solar heat or the like, and the handling is easy even when the cables are handled in a long length. In addition, since the cover fitting part fits outside the mating part of the base, the cover acts as an “umbrella” with respect to the base, preventing intrusion of rainwater etc. into the trough. This increases the reliability of cable protection.

また、請求項２の発明は、請求項１の発明において、前記ベースと前記カバーの各凸部の部分の幅寸法は、略同一となっていて、前記ベースの被嵌合部の横断面は、これと連続する凸部の横断面に対して小形に形成されて、両者の間に当接段差部が形成され、ベースにカバーを覆蓋した状態で、カバーの嵌合部の端面は、ベースの前記当接段差部に当接する構成になっていることを特徴としている。 In the invention of claim 2, in the invention of claim 1, the width dimensions of the portions of the convex portions of the base and the cover are substantially the same, and the cross section of the fitted portion of the base is The end face of the fitting part of the cover is formed in a small size with respect to the cross section of the convex part continuous with this, and a contact step part is formed between the two and the cover is covered with the base. It is the structure contact | abutted to the said contact | abutting level | step-difference part.

請求項２の発明によれば、ベースにカバーを覆蓋した状態で、その全体幅が高さ方向に沿ってほぼ同一となって、突出部が存在しなくなることにより、その取り扱い等が容易となる。 According to the invention of claim 2, with the cover covered on the base, the overall width becomes substantially the same along the height direction, and no protrusions are present, so that handling and the like are facilitated. .

また、請求項３の発明は、請求項１又は２に記載の発明において、前記カバーの嵌合部の内側には、係止突起が設けられていると共に、前記ベースの被嵌合部の外側には、前記係止突起と係止可能な被係止突起が設けられていることを特徴としている。 According to a third aspect of the present invention, in the first or second aspect of the present invention, a locking projection is provided on the inner side of the fitting portion of the cover, and the outer side of the fitted portion of the base. Is provided with a locked protrusion that can be locked with the locking protrusion.

請求項３の発明によれば、ベースにカバーを覆蓋した状態で、カバーが外れにくくなる。 According to the invention of claim 3, it is difficult for the cover to come off while the cover is covered on the base.

また、請求項４の発明は、請求項１ないし３のいずれかの発明において、前記カバーの凸部は、トラフの凸部よりも幅が広いことを特徴としているので、ベースに対してカバーの「傘」としての作用が一層顕著に奏されて、トラフ内への雨水等の浸入を一層確実に防ぐことができる。 According to a fourth aspect of the invention, in the invention according to any one of the first to third aspects, the convex portion of the cover is wider than the convex portion of the trough. The action as an “umbrella” is more remarkably exhibited, and rainwater and the like can be prevented more reliably from entering the trough.

また、請求項５の発明は、ケーブル類を収容するベースと、該ベースに覆蓋されるカバーとから成るトラフであって、前記ベース及びカバーは、長手方向に沿って所定ピッチで凹凸が設けられた筒状成形品を、横断面視で二分割することにより、それぞれ所定ピッチの凸部が幅方向に設けられて、長手方向に沿って凹凸状に形成され、前記カバーの凸部の開口側に臨む嵌合部は、前記ベースの凸部の開口側に臨む被嵌合部の外側に嵌合可能になっていることを特徴としている。 The invention of claim 5 is a trough comprising a base for housing cables and a cover covered by the base, and the base and the cover are provided with irregularities at a predetermined pitch along the longitudinal direction. By dividing the cylindrical molded product into two parts in a cross-sectional view, convex portions having a predetermined pitch are provided in the width direction, and are formed in a concavo-convex shape along the longitudinal direction, and the opening side of the convex portion of the cover The fitting portion that faces is fitted to the outside of the fitted portion that faces the opening side of the convex portion of the base.

請求項５の発明によれば、筒状成形品を横断面視で二分割して、ベースとカバーが成形されるために、成形金型が一つで済む等の成形上の利点を有して、請求項１の発明と同様の作用効果が奏される。 According to the invention of claim 5, since the base and the cover are molded by dividing the cylindrical molded product into two parts in a cross-sectional view, there is a molding advantage such as a single molding die. Thus, the same effect as that of the first aspect of the invention can be achieved.

本発明に係る波付トラフは、その凹凸部が長手方向に沿って形成されているので、幅方向の曲げや捩りに対する強度が高くなり、通常の肉厚のままで必要強度を確保することができ、軽量で長尺な、取扱い易いトラフを得ることができる。 In the corrugated trough according to the present invention, since the uneven portion is formed along the longitudinal direction, the strength against bending and twisting in the width direction is increased, and the necessary strength can be ensured with a normal thickness. And a light, long and easy-to-handle trough.

図１ないし図３を参照して本発明を更に詳細に説明する。但し、以下の本実施例の説明において、波付トラフＴの中間成形品である筒状中間成形品Ｔ’の各部分には、その完成品の各部分の符号に「’」を付すことにより両者を区別している。 The present invention will be described in more detail with reference to FIGS. However, in the following description of the present embodiment, each part of the tubular intermediate molded product T ′, which is an intermediate molded product of the corrugated trough T, is marked with “′” to the reference numeral of each part of the finished product. The two are distinguished.

図１に示される樹脂製の筒状中間成形品Ｔ' は、横断面視において略方形状の均一な肉厚を有する長尺な筒形状をしていて、その左右に対向する両側壁部の中央より少し上方に、高さ方向に切除幅Ｒ（図３参照）を有し、しかも幅方向に段差を有して、長手方向Ｓに沿って連続する一対の切除予定部３１’と、それより上方に位置するカバー部Ｃ’と、前記一対の切除予定部３１’より下方に位置するベース部Ｂ’とで構成されており、各々が一体に成形されたものである。カバー部Ｃ’及びベース部Ｂ’には、各々略同一の幅方向の寸法Ｑを有するカバー部及びベース部の各凸部 1',２'(図３参照）が設けられており、また、カバー部及びベース部の各凸部1', ２' の間には、筒状中間成形品Ｔ’の内側方向にそれらと連続して、かつ、それらに対して横断面が、略相似小形な被嵌合部用の凸部３２’が、一対形成されている。上記カバー部及びベース部の各凸部1', ２' は、筒状中間成形品Ｔ’の長手方向Ｓに沿って連続して形成されており、凹凸状、即ち、波形状に形成されているものであって、本実施例に係る筒状中間成形品Ｔ’においては、前記カバー部凸部１’のピッチＰと、ベース部凸部２’及び被嵌合部用の凸部３２’のピッチＰとは、等しくなるように構成されている。また、カバー部凸部１’の幅Ｗ₁は、ベース部凸部２’の幅Ｗ₂よりも大きく形成されている（図５参照）。図２に示されるように、この筒状中間成形品Ｔ’は、切除予定部３１’を切除して、上下方向に二分割して、カバーＣ及びベースＢとを得るためのものであり、本発明に係る波付トラフＴの成形工程の中間品であって、後述の方法によって連続中空押出成形されるものである。なお、図２において、３１は、筒状中間成形品Ｔ’の切除予定部３１’を切除して得られた不要な切除部を示す。 The resin-made cylindrical intermediate molded product T ′ shown in FIG. 1 has a long cylindrical shape having a uniform thickness in a substantially rectangular shape in a cross-sectional view, and is formed on both side wall portions facing to the left and right. A pair of planned cutting portions 31 ′ having a cutting width R (see FIG. 3) in the height direction and slightly stepped in the width direction and continuing along the longitudinal direction S, slightly above the center, The cover portion C ′ is located above and the base portion B ′ located below the pair of planned cutting portions 31 ′, and each is integrally formed. Each of the cover portion C ′ and the base portion B ′ is provided with a convex portion 1 ′, 2 ′ (see FIG. 3) of the cover portion and the base portion each having substantially the same width direction dimension Q. Between each convex part 1 ', 2' of a cover part and a base part, it is continuous in the inside direction of cylindrical intermediate molded product T ', and a cross section is substantially similar small with respect to them. A pair of convex portions 32 ′ for the fitted portions are formed. The convex portions 1 ′ and 2 ′ of the cover portion and the base portion are continuously formed along the longitudinal direction S of the cylindrical intermediate molded product T ′, and are formed in a concavo-convex shape, that is, a wave shape. In the cylindrical intermediate molded product T ′ according to the present embodiment, the pitch P of the cover portion convex portion 1 ′, the base portion convex portion 2 ′, and the convex portion 32 ′ for the fitted portion. The pitch P is configured to be equal. Moreover, the width W ₁ of the cover convex portion 1 ′ is formed larger than the width W ₂ of the base convex portion 2 ′ (see FIG. 5). As shown in FIG. 2, this cylindrical intermediate molded product T ′ is for cutting the planned cutting portion 31 ′ and dividing it into two in the vertical direction to obtain the cover C and the base B, The intermediate product of the forming step of the corrugated trough T according to the present invention, which is continuously hollow extruded by the method described later. In FIG. 2, reference numeral 31 denotes an unnecessary excision part obtained by excising the excision scheduled part 31 ′ of the cylindrical intermediate molded product T ′.

図３（イ）は、筒状中間成形品Ｔ’のカバー部Ｃ’及びベース部Ｂ’の各凸部１',２’における横断面図であって、同（ロ）は、切除予定部３１’を切除した状態のカバーＣ及びベースＢの各凸部１，２における横断面図である。図３に示されるとおりに、切除予定部３１’が切除された後には、前記被嵌合部用の凸部３２’は、被嵌合部４（被嵌合部用の凸部３２）となる部分であって、カバー凸部１の開口側に臨む部分（嵌合部３）が、該被嵌合部４の外側に対して覆い被さり可能な程度に、その横断面が略相似小形に形成されている。同様の目的で、ベース部Ｂ’の凹部１２’の内幅Ｕ₂は、カバー部Ｃ’の凹部１１’の内幅Ｕ₁よりも小さくなるように形成されている〔図３（イ）参照〕。また、カバー部凸部１’から切除予定部３１’に連続する部分においては、その内側に突出する係止突起９’が各々設けられており、前記被嵌合部用の凸部３２’には、上下方向にテーパ状を成す面を有して、その外側に突出する被係止突起１０’が設けられている。また、被嵌合部用の凸部３２’が、前記ベース部凸部２’と連続する部分には、各々の凸部分とほぼ直交する当接段差部６’が形成されている。 FIG. 3 (a) is a cross-sectional view of the convex portions 1 ′ and 2 ′ of the cover portion C ′ and the base portion B ′ of the cylindrical intermediate molded product T ′. It is a transverse cross section in each convex part 1 and 2 of cover C and base B of the state where 31 'was excised. As shown in FIG. 3, after the planned cutting portion 31 ′ has been cut, the convex portion 32 ′ for the fitted portion is connected to the fitted portion 4 (the convex portion 32 for the fitted portion). The cross section is substantially similar to the extent that the portion facing the opening of the cover convex portion 1 (the fitting portion 3) can be covered with the outside of the fitting portion 4. Is formed. For the same purpose, the inner width U ₂ of the concave portion 12 ′ of the base portion B ′ is formed to be smaller than the inner width U ₁ of the concave portion 11 ′ of the cover portion C ′ [see FIG. ]. Moreover, in the part which continues from the cover part convex part 1 'to the excision scheduled part 31', a locking projection 9 'protruding inside is provided, and the convex part 32' for the fitted part is provided. Is provided with a locked protrusion 10 ′ having a vertically tapered surface and protruding outward. Further, a contact stepped portion 6 ′ that is substantially orthogonal to each convex portion is formed at a portion where the convex portion 32 ′ for the fitted portion continues to the base convex portion 2 ′.

そして、前記切除予定部３１’の上端は、前記係止突起９’の高さ方向の中間に位置していると共に、その下端は、前記被係止突起１０’より上方の被嵌合部用の凸部３２’の部分に位置している。筒状中間成形品Ｔ’に対して切除幅Ｒを有する切除予定部３１’を長手方向Ｓに沿って切除すると、前記切除予定部３１’は、不要な一対の切除部３１となり、筒状中間成形品Ｔ’は、上下に二分割されて、波付トラフＴを構成するカバーＣとベースＢとが得られる（図２及び図３参照）。また、上記のようにして成形されたカバーＣの係止突起９の高さ方向の寸法Ｖ₁は、ベースＢにおける当接段差部６と被係止突起１０の下端との寸法Ｖ₂より、小さくなるように調節されている〔図３（ロ）参照〕。 Then, the upper end of the planned cutting portion 31 ′ is located in the middle of the locking projection 9 ′ in the height direction, and the lower end thereof is for the fitted portion above the locked projection 10 ′. Is located at the convex portion 32 '. When the planned cutting portion 31 ′ having the cutting width R is cut along the longitudinal direction S with respect to the cylindrical intermediate molded product T ′, the planned cutting portion 31 ′ becomes an unnecessary pair of cutting portions 31. The molded product T ′ is vertically divided into two to obtain a cover C and a base B constituting the corrugated trough T (see FIGS. 2 and 3). Further, the dimension V ₁ in the height direction of the locking projection 9 of the cover C formed as described above is based on the dimension V ₂ between the contact stepped portion 6 in the base B and the lower end of the locked projection 10. It is adjusted so as to be smaller (see FIG. 3B).

次に、上記した筒状中間成形品Ｔ’の成形方法について説明する。この筒状中間成形品Ｔ’は、図９及び図１０に示されるように、単体金型２１をキャタピラー状に連結した連結金型２２による連続押出成形方法によって成形される。互いに密着した一対の単体金型２１のキャビティ２１ａの内周面には、前記筒状中間成形品Ｔ’の前記各凸部（１',２',３２')と、それらに隣接する前記各凹部（１１',１２')との外形状に対応する凹凸部２１ｂが、筒状中間成形品Ｔ’と同一の前記ピッチＰにて設けられている。 Next, a method for forming the cylindrical intermediate molded product T ′ will be described. As shown in FIGS. 9 and 10, the cylindrical intermediate molded product T ′ is molded by a continuous extrusion molding method using a connecting mold 22 in which a single mold 21 is connected in a caterpillar shape. On the inner peripheral surface of the cavity 21a of the pair of single molds 21 that are in close contact with each other, the convex portions (1 ′, 2 ′, 32 ′) of the cylindrical intermediate molded product T ′ and the respective adjacent ones thereof are provided. Concave and convex portions 21b corresponding to the outer shape of the concave portions (11 ′, 12 ′) are provided at the same pitch P as that of the cylindrical intermediate molded product T ′.

図９に示されるように、多数の単体金型２１をキャタピラー状に連結した一対の連結金型２２を水平面内で循環走行するように相対向させて配置し、循環走行する左右の連結金型２２が成形部Ｆの部分において密着するようになっていると共に、成形部Ｆの部分を過ぎると、密着していた単体金型２１が左右に分離して離型されるようになっている。 As shown in FIG. 9, a pair of connecting molds 22 in which a large number of single molds 21 are connected in a caterpillar shape are arranged to face each other so as to circulate in a horizontal plane, and the left and right connecting dies that circulate. 22 is in close contact with the portion of the molding portion F, and after passing through the portion of the molding portion F, the single die 21 that has been in close contact with the left and right is separated and released.

押出機２３から押し出された溶融樹脂２４が、成形部Ｆの部分において左右の単体金型２１のキャビティ２１ａの内周面に空気圧によって押し付けられるようになっており、これにより、均一な肉厚を有する、前記各凸部（１',２',３２')と、それらに隣接する前記各凹部（１１',１２')とが、前記ピッチＰにて形成されて、前記ベース部Ｂ’及びカバー部Ｃ’並びに切除予定部３１’の各部分が一体となった筒状中間成形品Ｔ’が、連続して押出成形される。そして、この筒状中間成形品Ｔ’を使用長（４〜５ｍ）に切断する。 The molten resin 24 extruded from the extruder 23 is pressed against the inner peripheral surfaces of the cavities 21a of the left and right single molds 21 at the molding portion F by air pressure, thereby achieving a uniform thickness. The convex portions (1 ′, 2 ′, 32 ′) and the concave portions (11 ′, 12 ′) adjacent to the convex portions (1 ′, 12 ′) are formed at the pitch P, and the base portion B ′ and A cylindrical intermediate molded product T ′ in which the cover C ′ and the portions to be cut 31 ′ are integrated is continuously extruded. Then, this cylindrical intermediate molded product T ′ is cut into a working length (4 to 5 m).

そして、前述したとおり、筒状中間成形品Ｔ’が二分割された後には、カバーＣのカバー凸部１の開口側に臨む部分には、前記係止突起９を有して、ベースＢの開口側に臨む凸部の外側に嵌合するための嵌合部３が、一対設けられている。他方、ベースＢの開口側に臨む部分には、前記被係止突起１０を有して、ベース凸部２と連続して、その横断面に対して略相似小形の横断面を有する被嵌合部４が、一対設けられており、前記嵌合部３の内側に嵌め込み可能となっている。被嵌合部４は、切除以前には、被嵌合部用の凸部３２’であったところの一部分である。即ち、単体構造の筒状中間成形品Ｔ’を成形するのみで、目的の波付トラフＴを構成する別体のカバーＣ及びベースＢを得ることができる。 And as above-mentioned, after cylindrical intermediate molded product T 'is divided into two, the part which faces the opening side of the cover convex part 1 of the cover C has the said latching protrusion 9, and the base B A pair of fitting portions 3 for fitting outside the convex portion facing the opening side is provided. On the other hand, the portion facing the opening side of the base B has the above-mentioned locked projection 10 and is continuous with the base convex portion 2 and has a cross section that is substantially similar to the cross section of the cross section. A pair of parts 4 are provided and can be fitted inside the fitting part 3. The fitted portion 4 is a part of the convex portion 32 ′ for the fitted portion before excision. That is, the separate cover C and base B constituting the target corrugated trough T can be obtained only by forming the cylindrical intermediate molded product T ′ having a single structure.

図４に示されるように、長尺状の波付トラフＴは、ベースＢの上にケーブル類４１を載せて、その上からカバーＣを覆蓋するか、又はベースＢにカバーＣを覆蓋した後に、それらの間にケーブル類４１を挿入して、それを保護するために使用される。以下にベースＢにカバーＣを覆蓋する方法について説明する。 As shown in FIG. 4, the elongated corrugated trough T is obtained by placing the cables 41 on the base B and covering the cover C from the top or covering the base B with the cover C. The cable 41 is inserted between them and used to protect it. Hereinafter, a method for covering the base B with the cover C will be described.

図５は、使用状態の波付トラフＴの側面図であり、図６は、ベースＢに対してカバーＣを覆蓋した状態の波付トラフＴの各凸部１，２の部分の横断面図（図５のＸ−Ｘ線断面図）であり、図８は、同様の状態の嵌合部３及び被嵌合部４の部分の底面半断面図（図５のＹ−Ｙ線断面図）である。図６及び図８に示されるとおり、カバー凸部１の前記嵌合部３と、ベース凸部２に連続する前記被嵌合部４とが、ほぼ合致するように長手方向Ｓに位置合わせして、ベースＢの上方からカバーＣを押圧する。被嵌合部４は、嵌合部３の内側に嵌入できるように、それらの横断面が互いに略相似形に形成されており、また、被嵌合部４に隣接するベース凹部１２も、嵌合部３に隣接するカバー凹部１１より内側に配置するように形成されているので、長手方向Ｓの全長にわたって、ベースＢの外側にカバーＣを覆蓋することができる。 FIG. 5 is a side view of the corrugated trough T in use, and FIG. 6 is a cross-sectional view of the portions of the convex portions 1 and 2 of the corrugated trough T with the cover C covered with the base B. FIG. 8 is a cross-sectional view taken along the line XX in FIG. 5, and FIG. It is. As shown in FIGS. 6 and 8, the fitting portion 3 of the cover convex portion 1 and the fitted portion 4 continuing to the base convex portion 2 are aligned in the longitudinal direction S so as to substantially coincide with each other. Then, the cover C is pressed from above the base B. The to-be-fitted parts 4 are formed so that their cross-sections are substantially similar to each other so that they can be fitted inside the fitting part 3, and the base recess 12 adjacent to the to-be-fitted part 4 is also fitted. Since it is formed so as to be disposed inside the cover recess 11 adjacent to the joint portion 3, the cover C can be covered outside the base B over the entire length in the longitudinal direction S.

図７に示されるとおり、ベースＢに対するカバーＣの覆蓋時には、係止突起９と被係止突起１０とが干渉するが、それに設けられたテーパ面部１０ａが、嵌入時のそれらの干渉を和らげるので、嵌合部３が僅かに外側に弾性変形されて、円滑に嵌合操作を行うことができる。また、前記係止突起９と被係止突起１０とが一旦係止した後には、被係止突起１０の垂直面部と係止突起９の段差部が干渉するので、ベースＢにカバーＣが係止して、カバーＣが、ベースＢから抜け出にくい構造になっている。ベースＢの被嵌合部４には、ベース凸部２と連続する当接段差部６が設けられているので、嵌合部端面７は、当接段差部６に当接することにより、ベースＢに対するカバーＣの覆蓋状態が安定する。しかも、ベースＢのベース凸部２の部分と、カバーＣのカバー凸部１の部分とは、略同一の幅寸法Ｑを有しているので（図６参照）、波付トラフＴの全体幅は、高さ方向に沿ってほぼ同一であり、カバー凸部１とベース凸部２が当接する部分において、突出部が存在しないので、その取扱いが容易にできる構造になっている。 As shown in FIG. 7, when the cover C is covered with the base B, the locking projections 9 and the locked projections 10 interfere with each other, but the taper surface portion 10a provided thereon softens those interference when fitted. The fitting portion 3 is slightly elastically deformed outward so that the fitting operation can be performed smoothly. Further, after the locking projection 9 and the locked projection 10 are once locked, the vertical surface portion of the locked projection 10 and the stepped portion of the locking projection 9 interfere with each other, so that the cover C is engaged with the base B. The cover C is structured so as not to easily come out of the base B. Since the fitted part 4 of the base B is provided with the contact step part 6 that is continuous with the base convex part 2, the fitting part end surface 7 is brought into contact with the contact step part 6, whereby the base B The cover state of the cover C with respect to is stabilized. In addition, since the base convex portion 2 portion of the base B and the cover convex portion 1 portion of the cover C have substantially the same width dimension Q (see FIG. 6), the overall width of the corrugated trough T Are substantially the same along the height direction, and since there is no protrusion at the portion where the cover convex portion 1 and the base convex portion 2 abut, the structure can be easily handled.

上述したとおり、本発明に係る波付トラフＴは、その長手方向Ｓに沿って、カバー及びベースの各凸部１，２が、凹凸を有する波板状に連続して形成されているので、平板状に成形したものよりも、幅方向の曲げ力及び捩り力に対する強度が大きくなり、わん曲するのを防止できる。従って、ケーブル類４１を収容して屋外で使用する場合においても、太陽熱による熱変形に対して、その肉厚を増さずとも強い構造になっており、軽量であるので、長尺状態で使用する場合においても、その取扱いが容易になる。また、カバー凸部１の前記嵌合部３が、ベース凸部２の前記被嵌合部４の外側に嵌合可能になっていることにより、嵌合部３が波付トラフＴの「傘」となって、波付トラフＴの上方より浸入する雨水や埃を防ぐことができる。更に、前記カバー凸部１の幅Ｗ₁は、前記ベース凸部２の幅Ｗ₂より幅広に形成されているので（図５参照）、カバーＣが、ベースＢに対して、波付トラフＴの長手方向Ｓに沿って僅かにずれて覆蓋しても、同様の「傘」の効果が得られる。 As described above, the corrugated trough T according to the present invention is formed along the longitudinal direction S because the convex portions 1 and 2 of the cover and the base are continuously formed in a corrugated shape having irregularities. The strength against bending force and torsional force in the width direction is larger than that formed into a flat plate shape, and bending can be prevented. Therefore, even when the cables 41 are accommodated and used outdoors, the structure is strong against thermal deformation caused by solar heat without increasing its thickness, and is lightweight, so it is used in a long state. In this case, the handling becomes easy. In addition, the fitting portion 3 of the cover convex portion 1 can be fitted to the outside of the fitted portion 4 of the base convex portion 2, so that the fitting portion 3 is an “umbrella of the corrugated trough T”. Thus, rainwater and dust entering from above the corrugated trough T can be prevented. Furthermore, since the width W ₁ of the cover convex portion 1 is formed wider than the width W ₂ of the base convex portion 2 (see FIG. 5), the cover C is corrugated trough T with respect to the base B. Even if the cover is slightly shifted along the longitudinal direction S, the same “umbrella” effect can be obtained.

なお、上記実施例においては、トラフＴを構成するカバーＣとベースＢの各凸部１，２の形成ピッチＰが、同一の場合について説明したが、例えば、ベースの凸部の形成ピッチが、カバーの凸部のピッチの２倍であって、一定長におけるべースとカバーの各凸部の数に相違があっても、本発明の上記した作用効果が奏される。即ち、ベースにおける凸部の形成ピッチが、カバーのピッチの整数倍であればよい。 In addition, in the said Example, although the formation pitch P of each convex part 1, 2 of the cover C and base B which comprises the trough T demonstrated the same case, for example, the formation pitch of the convex part of a base is Even when the pitch of the convex portions of the cover is twice the pitch of the base and the number of convex portions of the cover in a certain length, the above-described effects of the present invention can be achieved. That is, the formation pitch of the protrusions on the base may be an integral multiple of the cover pitch.

また、上記実施例においては、ベースＢのベース凸部２と連続して、その横断面形状に対して略相似小形の横断面を有する被嵌合部４を設け、カバーＣの嵌合部３が、そこから突出せずに、それに当接して外側から被さる構成について説明したが、所定の凸部を設けたカバーがベースの外側に被さる構成であれば、それでも構わない。 Moreover, in the said Example, the to-be-fitted part 4 which has the cross-section of a small size substantially similar to the cross-sectional shape is provided continuously with the base convex part 2 of the base B, and the fitting part 3 of the cover C is provided. However, the configuration in which the cover abuts on the outside and does not protrude from the outside has been described. However, as long as the cover provided with the predetermined convex portion covers the outside of the base, this may be used.

筒状中間成形品Ｔ’の斜視図である。FIG. 6 is a perspective view of a cylindrical intermediate molded product T ′. 切除予定部３１’を切除して筒状中間成形品Ｔ’を横断面視で二分割して、ベースＢとカバーＣとを成形した状態の斜視図である。FIG. 6 is a perspective view of a state in which a base B and a cover C are formed by cutting a planned cutting portion 31 ′ and dividing a cylindrical intermediate molded product T ′ into two in a cross-sectional view. （イ）は、筒状中間成形品Ｔ’のカバー部Ｃ’及びベース部Ｂ’の各凸部１’，２’における横断面図であって、同（ロ）は、切除予定部３１’を切除した状態のカバーＣ及びベースＢの各凸部１，２における横断面図である。(A) is a cross-sectional view of the convex portions 1 ′ and 2 ′ of the cover portion C ′ and the base portion B ′ of the cylindrical intermediate molded product T ′, and FIG. It is a cross-sectional view in each convex part 1, 2 of the cover C and the base B of the state which cut | disconnected. 波付トラフＴの使用状態の斜視図である。It is a perspective view of the use condition of corrugated trough T. ベースＢに対してカバーＣを覆蓋した状態の波付トラフＴの側面図である。3 is a side view of a corrugated trough T in a state where a cover C is covered with a base B. FIG. 同様の状態の各凸部１，２の部分における横断面図（図５のＸ−Ｘ線断面図）である。FIG. 6 is a transverse cross-sectional view (cross-sectional view taken along the line XX in FIG. 5) at each of the convex portions 1 and 2 in the same state. 図６の嵌合部３及び被嵌合部４の部分の拡大図である。It is an enlarged view of the part of the fitting part 3 and the to-be-fitted part 4 of FIG. 波付トラフＴの嵌合部３及び被嵌合部４の部分の底面半断面図（図５のＹ−Ｙ線断面図）である。It is a bottom half sectional view (YY line sectional view of Drawing 5) of a portion of fitting part 3 and fitting part 4 of corrugated trough T. 筒状中間成形品Ｔ’を押出成形するための連結金型装置の平面図である。It is a top view of the connection die apparatus for extrusion-molding the cylindrical intermediate molded product T '. 図９のＺ−Ｚ線断面図である。FIG. 10 is a sectional view taken along line ZZ in FIG. 9.

Explanation of symbols

Ｂ：ベース
Ｂ’：ベース部
Ｃ：カバー
Ｃ’：カバー部
Ｐ：ベース及びカバーの凸部のピッチ
Ｑ：ベース及びカバーの凸部の部分の幅寸法
Ｓ：波付トラフの長手方向
Ｔ：波付トラフ
Ｔ’：筒状中間成形品
１：カバー凸部
１’：筒状中間成形品のカバー部凸部
２：ベース凸部
２’：筒状中間成形品のベース部凸部
３：嵌合部
４：被嵌合部
６：当接段差部
７：嵌合部端面
９：係止突起
１０：被係止突起
３１：切除部
３１’：切除予定部
３２，３２’：被嵌合部用の凸部 B: Base
B ': Base part
C: Cover
C ': Cover part
P: Pitch of the convex part of the base and cover
Q: Width dimension of the convex part of the base and cover
S: Longitudinal direction of corrugated trough
T: Wave trough
T ': Cylindrical intermediate molded product
1: Cover convex part
1 ': Cover part convex part of cylindrical intermediate molded product
2: Base protrusion
2 ': Base part convex part of cylindrical intermediate molded product
3: Fitting part
4: Part to be fitted
6: Abutting step
7: End face of fitting part
9: Locking protrusion
10: Locked protrusion
31: Resection part
31 ': Planned part 32, 32': Convex part for to-be-fitted part

Claims

A trough comprising a base for housing cables and a cover covered by the base;
The base and the cover are provided with protrusions having a predetermined pitch in the width direction, and are formed in an uneven shape along the longitudinal direction.
Moreover, the pitches of the convex portions of the base and the cover are the same or have an integer multiple relationship,
The corrugated trough characterized in that the fitting portion facing the opening side of the convex portion of the cover can be fitted to the outside of the fitted portion facing the opening side of the convex portion of the base.

The width dimensions of the convex portions of the base and the cover are substantially the same,
The cross section of the fitted portion of the base is formed in a small size with respect to the cross section of the convex portion continuous therewith, and a contact step portion is formed between the two,
2. The corrugated trough according to claim 1, wherein an end surface of a fitting portion of the cover is in contact with the contact step portion of the base in a state where the cover is covered with the base.

A locking projection is provided inside the fitting portion of the cover, and a locking projection that can be locked with the locking projection is provided outside the fitting portion of the base. The corrugated trough according to claim 1 or 2, wherein

The corrugated trough according to any one of claims 1 to 3, wherein the convex portion of the cover is wider than the convex portion of the trough.

A trough comprising a base for housing cables and a cover covered by the base;
The base and the cover are divided into two in a cross-sectional view of a cylindrical molded product provided with irregularities at a predetermined pitch along the longitudinal direction, so that convex portions of a predetermined pitch are provided in the width direction, respectively. It is formed in an uneven shape along the direction,
The corrugated trough characterized in that the fitting portion facing the opening side of the convex portion of the cover can be fitted to the outside of the fitted portion facing the opening side of the convex portion of the base.