JP4218906B2

JP4218906B2 - Conduit hose

Info

Publication number: JP4218906B2
Application number: JP2002182275A
Authority: JP
Inventors: 秀和山名
Original assignee: Tigers Polymer Corp
Current assignee: Tigers Polymer Corp
Priority date: 2002-06-24
Filing date: 2002-06-24
Publication date: 2009-02-04
Anticipated expiration: 2022-06-24
Also published as: CN1260505C; JP2004028149A; CN1470795A

Description

【０００１】
【発明の属する技術分野】
本発明は、いわゆるコンジットホースに関し、例えば風呂水を利用して洗濯を行うため、洗濯機本体に接続する風呂水給水ホースに関する。
【０００２】
【従来の技術】
従来、風呂水給水ホースとしては合成樹脂可撓性ホースが用いられ、例えば特開平１１−１０４３９５号公報のように軟質合成樹脂製のチューブに硬質合成樹脂製の螺旋補強体を添着して構成したものが知られている。そして、風呂水を洗濯機に給水する場合には、このホースの一端部に取付けた継手を洗濯機本体の給水口に差込み、ホースの他端部を浴槽内にセットすることが行われる。
【０００３】
しかし、上記のホースは内周面を平坦にすることはできるが、通常４〜６ｍにも及ぶ長尺ホースの長さ方向におけるどの部分でも可撓伸縮性が均等であり、特定の長さ部分のみ他の部分と異なる性能を持たせることはできない。また、上記ホースを使用しないときは、リング状に丸めて保管するしか方法がなく嵩張って収納し難い。さらに、ホース端部に別途成形された継手を準備して取付けねばならないといった問題があった。
【０００４】
【発明が解決しようとする課題】
本発明は、前述の問題点に鑑み、内部の流通抵抗をできるだけ小さく維持しながら、使用時の取扱いが容易であるとともに非使用時において嵩張らずに収納でき、また部品点数の少ない給水ホースを提供することを目的とするものである。
【０００５】
【課題を解決するための手段】
本発明は、上記目的を達成するため、押出し樹脂チューブを膨張させて連続成形されるコンジットホースとし、ホース壁をホースの軸線方向に沿って凹部と凸部に交互に形成した第1波形部と、ホース壁を伸長状態において断面略三角形状としかつその三角形状の頂部付近を中心として一方の短尺の斜辺が他方の長尺の斜辺に対して略平行な縮小状態に変化してその状態を保持する第2波形部を含むホースユニットを少なくとも2以上一体形成するとともに、略180度に折り曲げかつ自己保持させた前記第2波形部を介して複数の前記第1波形部が湾曲せずに直線状に保たれ、前記第1波形部を相互に略平行状態にして収納できるようにしてあることを手段とするものである。
【０００６】
請求項１のコンジットホースは、第 1 波形部の凹部の内周面をホースの軸線とほぼ平行な平坦面に形成され ( 請求項 2) 、ホースユニットの端部に口元部が一体形成され ( 請求項３ ) 、ホースユニットにおける第 1 波形部の軸線方向長さ部分が第 2 波形部の軸線方向長さ部分より大きく形成されている ( 請求項４ ) 場合がある。
【０００８】
【発明の実施の形態】
以下、本発明を具体化した実施形態を図面を参照して説明する。
【０００９】
本発明に係る給水ホースは、基本的には図１に示す概略成形装置により押出し樹脂チューブを膨張させて連続成形するもので、ポリエチレン、ポリプロピレン等のオレフィン系樹脂からなる当業界でコンジットホースと呼ばれるものである。すなわち、押出機のノズル５０から溶融状態のチューブが、相対する金型ユニットがそれぞれクローラベルト状に連結され形成された一対の成形ユニット５１，５１内に押出され、同時にチューブ内部に加圧空気がブローされて金型ユニットの成形面に密着し、その後冷却硬化して蛇腹状のホースＨが連続成形される。なお、チューブの内部に加圧空気をブローする代わりに、チューブを外部から吸引するバキューム成形によっても同様に成形することができる。
【００１０】
図２は、本発明の実施例に係るホースＨの構成単位となるホースユニット１の全体構造を表した図である。ホースユニット１は、その全長（８００ｍｍ）のうちＡの長さを占める第１波形部１０と、Ｂの長さを占める第２波形部２０と、両端の略ストレート状の口元部３０が一体に形成されている。本実施例の好ましい例として、Ａの長さを６００ｍｍ、Ｂの長さ１００ｍｍとし、Ａ／Ｂを６倍にしてある。
【００１１】
図３は第１波形部１０の部分断面側面図、図４はホース壁のみの拡大断面図で、ホース壁は螺旋状の凸部１１と凹部１３が交互に形成された螺旋波形状であり、凹部１３の内周面１３ａは略直線状でホース軸線とほぼ平行な平坦面に、外周面１３ｂはジグザク面に形成されている。本実施例の好ましい例として、凹部１３の幅Ｓを４ｍｍ、凸部１１の幅Ｔを２．５ｍｍとし、Ｓ＞Ｔの関係により凸部１１内側の螺旋溝１２を小さくしてある。
【００１２】
図５は、第２波形部２０の部分断面拡大図で、ホース壁は環状の凹凸波形に形成され、その断面形状が三角形状で、頂部２１を中心として一方の傾斜壁２２を長尺に、他方の傾斜壁２３を短尺に形成してある。そして、ホース成形時には図５のとおり伸張姿勢として形成され、自然状態においてこの伸張姿勢を保持するが、軸線方向に外力を加えると図６に示すように、短尺とした右側傾斜壁２３が長尺とした左側傾斜壁２２に対して略平行な縮小姿勢に変形し、かつこの縮小姿勢を自己保持するものである。
【００１３】
口元部３０，３０は、その一方が主に洗濯機本体の給水口への接続部を構成するもので第２波形部２０から端部方向に向かって連続形成され、他方は第１波形部１０から連続して形成される。この他方の口元部３０には、次に述べるように、第２のホースユニットが図２で点線で示すように直列的に連続形成されることになる。
【００１４】
図７は、上記のホースユニット１を５ユニット連続形成して１本の給水ホースＨにしたもので、その非使用時の収納形態を示している。この収納形態では、第１のホースユニット１の主要長さを占める第１波形部１０を湾曲させずに直線状に保ち、その第２波形部２０を略１８０度に折り曲げかつ自己保持させて、これに続く第２のホースユニット１を方向転換し、その第１波形部１０も湾曲させずに直線状に保ち、これに続くホースユニットも以後同様にしてこれらの第１波形部１０，１０……を相互に略平行状態にして収納する。
【００１５】
図８は、洗濯機本体４０に浴槽４１の水を吸い上げて供給する給水ホースＨの使用例を示し、ホースＨ一端のホースユニット１の口元部３０を洗濯機本体の給水口（図示せず）に差し込み、第２波形部２０を略直角に屈曲固定させて、ホースＨの他端を浴槽に沈める。この他端には必要に応じてストレーナを取付けてもよい。
【００１６】
本実施例は上記の構成により次の利点が得られる。
（１）第１波形部１０の凹部内周面を平坦面にしたので通水抵抗を小さく維持できる。特に、第１波形部１０のホースユニット１に占める長さＡが第２波形部の長さＢより数倍大きい場合や、第１波形部１０の凹部が凸部に比して広幅の場合には、流通抵抗を極力小さく抑制できる。
（２）ホースユニット１に伸張姿勢と縮小姿勢との両姿勢で自己姿勢保持できる性能をもつ第２波形部２０を第１波形部と併有させたので使い勝手がよく、特に長尺のホースを嵩張らずに収納できる形態に折り曲げることができる。
（３）洗濯機本体との接続には端部に一体形成された口元部３０を利用することにより、別途接続のための部品が不要となる。また、口元部３０の直後に第２波形部２０を形成した場合には、ホース端部を所望の角度に屈曲固定させて配管することができる。
（４）第１波形部１０を螺旋状の波形にしたときは、環状の波形に比して凸部内側の螺旋溝に通水が残留することが少ない。
（５）第１波形部１０の凹部外周面をジグザク面にしたときは、成形上凹部内周面を平坦面に形成しやすいほか、屈曲時の耐変形力を向上できる。
【００１７】
なお、本発明にかかるコンジットホースは前記実施例に限定されるものでなく、その要旨の範囲で種々に変更することができる。例えば、第１波形部の波形は環状でもよく、第２波形部は、伸張姿勢と縮小姿勢との両姿勢で自己姿勢保持できる公知の構造を採用でき、その波形を螺旋状にしてもよい。また、コンジットホースの用途は限定されず、給水ホース以外の用途に使用してもよい。
【００１８】
【発明の効果】
本発明によれば、凹部と凸部が交互に形成される基本構造のコンジットホースでありながら、流体抵抗を可及的に増大させることなく、コンジットホースの特質を有効に利用することにより、他物との接続の容易性を確保して部品点数を削減し、またホースを自由に屈曲固定できる程度が高いので使い回しがよく、収納も嵩張らず保管スペースを節減することができる。
【図面の簡単な説明】
【図１】コンジットホースの成形装置概略図。
【図２】ホースユニットの全体側面図。
【図３】第１波形部の部分断面側面図。
【図４】第１波形部ホース壁の拡大断面図。
【図５】第２波形部の伸張姿勢における部分断面拡大図。
【図６】第２波形部の収縮姿勢における部分断面拡大図。
【図７】コンジットホースの収納形態を示す全体側面図。
【図８】風呂水給水ホースの使用状態を示す図。
【符号の説明】
Ｈコンジットホース
１ホースユニット
１０第１波形部
１１凸部
１２螺旋溝
１３凹部
２０第２波形部
２１頂部
２２左傾斜壁
２３右傾斜壁
３０口元部
４０洗濯機本体
４１浴槽
５０押出機ノズル
５１，５１成形ユニット[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a so-called conduit hose and, for example, relates to a bath water supply hose connected to a washing machine body in order to perform washing using bath water.
[0002]
[Prior art]
Conventionally, a synthetic resin flexible hose has been used as a bath water supply hose. For example, as shown in JP-A-11-104395, a soft synthetic resin tube is attached to a hard synthetic resin helical reinforcement. Things are known. When bath water is supplied to the washing machine, a joint attached to one end of the hose is inserted into a water supply port of the washing machine body, and the other end of the hose is set in the bathtub.
[0003]
However, although the above-mentioned hose can make the inner peripheral surface flat, the flexible stretchability is uniform in any part in the length direction of the long hose, which is usually 4 to 6 m, and the specific length part Only can not have different performance from other parts. Further, when the hose is not used, there is only a method for storing the hose in a ring shape, which is bulky and difficult to store. Further, there is a problem that a joint formed separately at the end of the hose has to be prepared and attached.
[0004]
[Problems to be solved by the invention]
In view of the above-mentioned problems, the present invention provides a water supply hose that is easy to handle at the time of use and can be stored without being bulky when not in use, while keeping the internal flow resistance as small as possible, and has a small number of parts. It is intended to do.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a conduit hose that is continuously formed by expanding an extruded resin tube, and a first corrugated portion in which a hose wall is alternately formed in a concave portion and a convex portion along the axial direction of the hose; The hose wall has a substantially triangular cross-section in the extended state, and one short hypotenuse changes to a contracted state substantially parallel to the other long hypotenuse and maintains that state. At least two or more hose units including the second corrugated portion are integrally formed, and the plurality of first corrugated portions are linearly curved without being bent through the second corrugated portion that is bent and self-held at approximately 180 degrees. And the first corrugated portions are stored in a substantially parallel state to each other.
[0006]
In the conduit hose of claim 1, the inner peripheral surface of the concave portion of the first corrugated portion is formed on a flat surface substantially parallel to the axis of the hose ( claim 2) , and the mouth portion is integrally formed at the end of the hose unit ( (3 ) The axial length of the first corrugated portion of the hose unit may be formed larger than the axial length of the second corrugated portion ( claim 4 ) .
[0008]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of the invention will be described with reference to the drawings.
[0009]
The water supply hose according to the present invention is basically a continuous hose formed by expanding an extruded resin tube by a schematic molding apparatus shown in FIG. 1, and is called a conduit hose in the industry made of an olefin resin such as polyethylene or polypropylene. Is. That is, a molten tube is extruded from a nozzle 50 of an extruder into a pair of molding units 51 and 51 formed by connecting opposing mold units in a crawler belt shape, and at the same time pressurized air is introduced into the tube. After being blown, it is brought into close contact with the molding surface of the mold unit, and then cooled and hardened to continuously form a bellows-like hose H. In addition, it can shape | mold similarly by the vacuum shaping | molding which attracts | sucks a tube from the outside instead of blowing pressurized air inside a tube.
[0010]
FIG. 2 is a diagram showing the entire structure of the hose unit 1 that is a constituent unit of the hose H according to the embodiment of the present invention. The hose unit 1 includes a first corrugated portion 10 occupying a length A of the entire length (800 mm), a second corrugated portion 20 occupying a length B, and substantially straight mouth portions 30 at both ends. Is formed. As a preferred example of this embodiment, the length of A is 600 mm, the length of B is 100 mm, and A / B is 6 times.
[0011]
FIG. 3 is a partial sectional side view of the first corrugated portion 10, FIG. 4 is an enlarged sectional view of only the hose wall, and the hose wall has a spiral wave shape in which spiral convex portions 11 and concave portions 13 are alternately formed, The inner peripheral surface 13a of the recess 13 is formed in a substantially straight flat surface substantially parallel to the hose axis, and the outer peripheral surface 13b is formed in a zigzag surface. As a preferred example of this embodiment, the width S of the concave portion 13 is 4 mm, the width T of the convex portion 11 is 2.5 mm, and the spiral groove 12 inside the convex portion 11 is made small by the relationship of S> T.
[0012]
FIG. 5 is an enlarged partial cross-sectional view of the second corrugated portion 20, and the hose wall is formed into an annular corrugated corrugated shape, the cross-sectional shape is triangular, and one inclined wall 22 is elongated from the top 21. The other inclined wall 23 is formed in a short length. When the hose is formed, the stretched posture is formed as shown in FIG. 5, and this stretched posture is maintained in a natural state. However, when an external force is applied in the axial direction, the short right inclined wall 23 is long as shown in FIG. The left inclined wall 22 is deformed into a reduced posture substantially parallel to the left inclined wall 22 and the reduced posture is held by itself.
[0013]
One of the mouth portions 30, 30 mainly constitutes a connection portion to the water supply port of the washing machine body, and is continuously formed from the second corrugated portion 20 toward the end portion, and the other is the first corrugated portion 10. Is formed continuously. As will be described below, a second hose unit is continuously formed in series at the other mouth portion 30 as indicated by a dotted line in FIG.
[0014]
FIG. 7 shows the storage form when the hose unit 1 is not used, in which five units of the hose unit 1 are continuously formed to form one water supply hose H. In this storage form, the first corrugated portion 10 occupying the main length of the first hose unit 1 is kept straight without being bent, and the second corrugated portion 20 is bent at about 180 degrees and self-held, The direction of the second hose unit 1 that follows this is changed, and the first corrugated portion 10 is also kept straight without being bent, and the subsequent hose unit is also used for the first corrugated portions 10, 10,. Are stored in a substantially parallel state to each other.
[0015]
FIG. 8 shows a usage example of the water supply hose H that sucks and supplies the water in the bathtub 41 to the washing machine body 40, and the mouth portion 30 of the hose unit 1 at one end of the hose H is connected to a water supply port (not shown) of the washing machine body. The second corrugated portion 20 is bent and fixed at a substantially right angle, and the other end of the hose H is submerged in the bathtub. You may attach a strainer to this other end as needed.
[0016]
In the present embodiment, the following advantages can be obtained by the above configuration.
(1) Since the inner peripheral surface of the concave portion of the first corrugated portion 10 is a flat surface, the water flow resistance can be kept small. In particular, when the length A of the first corrugated portion 10 occupying the hose unit 1 is several times larger than the length B of the second corrugated portion, or when the concave portion of the first corrugated portion 10 is wider than the convex portion. Can suppress the distribution resistance as small as possible.
(2) The hose unit 1 has the second corrugated portion 20 having the ability to hold the self posture in both the extended posture and the reduced posture in combination with the first corrugated portion. It can be folded into a form that can be stored without being bulky.
(3) By using the mouth portion 30 integrally formed at the end portion for connection to the washing machine body, a separate connection component is not required. In addition, when the second corrugated portion 20 is formed immediately after the mouth portion 30, the hose end portion can be bent and fixed at a desired angle for piping.
(4) When the 1st waveform part 10 is made into the helical waveform, compared with a cyclic | annular waveform, there is little water flow in a spiral groove inside a convex part.
(5) When the outer peripheral surface of the concave portion of the first corrugated portion 10 is a zigzag surface, it is easy to form the inner peripheral surface of the concave portion on the molding as a flat surface, and the deformation resistance during bending can be improved.
[0017]
In addition, the conduit hose concerning this invention is not limited to the said Example, It can change variously in the range of the summary. For example, the waveform of the first waveform portion may be annular, and the second waveform portion may adopt a known structure that can hold the posture in both the extended posture and the reduced posture, and the waveform may be spiral. Moreover, the use of a conduit hose is not limited, You may use it for uses other than a water supply hose.
[0018]
【The invention's effect】
According to the present invention, a conduit hose having a basic structure in which concave portions and convex portions are alternately formed can be used by effectively utilizing the characteristics of the conduit hose without increasing the fluid resistance as much as possible. Ease of connection with the object is reduced, the number of parts is reduced, and since the hose can be freely bent and fixed, it is easy to use and the storage space is not bulky and the storage space can be saved.
[Brief description of the drawings]
FIG. 1 is a schematic view of a conduit hose forming apparatus.
FIG. 2 is an overall side view of the hose unit.
FIG. 3 is a partial cross-sectional side view of a first corrugated portion.
FIG. 4 is an enlarged cross-sectional view of a first corrugated portion hose wall.
FIG. 5 is a partial cross-sectional enlarged view of the second corrugated portion in the extended posture.
FIG. 6 is an enlarged partial cross-sectional view of the second corrugated portion in a contracted posture.
FIG. 7 is an overall side view showing a conduit hose storage configuration.
FIG. 8 is a diagram showing a use state of a bath water supply hose.
[Explanation of symbols]
H conduit hose 1 hose unit 10 first corrugated part 11 convex part 12 spiral groove 13 concave part 20 second corrugated part 21 top part 22 left inclined wall 23 right inclined wall 30 mouth part 40 washing machine body 41 bathtub 50 extruder nozzles 51, 51 Molding unit

Claims

A first corrugated portion in which the hose wall is alternately formed into a concave portion and a convex portion along the axial direction of the hose, and the hose wall has a substantially triangular cross section in the extended state and one short length centering around the top of the triangular shape . A conduit hose in which at least two hose units including a second corrugated portion that changes to a contracted state in which the hypotenuse changes to be substantially parallel to the other long hypotenuse and maintains that state is at least 180 degrees. A plurality of the first corrugated portions are kept straight without being bent through the second corrugated portions that are bent and self-supported so that the first corrugated portions can be stored in a substantially parallel state to each other. Conduit hose characterized by being.

2. The conduit hose according to claim 1, wherein the inner peripheral surface of the concave portion of the first corrugated portion is formed on a flat surface substantially parallel to the axis of the hose.

2. The conduit hose according to claim 1, wherein a mouth portion is integrally formed at an end portion of the hose unit.

2. The conduit hose according to claim 1, wherein an axial length portion of the first corrugated portion in the hose unit is formed larger than an axial length portion of the second corrugated portion.