CN1260505C - Hose - Google Patents

Abstract

To provide a water supply hose capable of achieving easiness to handle when used, and compactness to be stored when not used, while maintaining the minimum flow resistance inside, and restricting the number of parts. The supply water hose is formed of a conduit hose that is continuously molded by expanding an extusion-molded resin tube. A hose unit includes a first waveform part 10 comprising a hose wall having recessed parts and projected parts alternately formed in the direction of an axial line of the hose, with the recessed parts having an inner circumferential surface that is formed as a flat surface roughly parallel to the axial line of the hose, and a second waveform part 20 comprising a hose wall having a roughly triangular cross sectional surface in an extended state, with one oblique side changed to a contracted state roughly parallel to the other oblique side around the center of its apex, to hold the state. At least two hose units are integrally formed. (C)2004,JPO.

Description

Flexible conduit

Technical field

The present invention relates to so-called flexible conduit (Japanese: コ Application ジ ッ ト ホ one ス), related, for example, to and utilized water for bathing to wash and be connected in water for bathing water supply hose on the washing machine body.

Background technique

In the past, used the synthetic resin flexible hose, for example known structure that has in the pipe that the described spiral intensive aspect with hard resin system of Japanese patent laid-open 11-104395 communique makes an addition to soft synthetic resin system as the water for bathing water supply hose.And in occasion from water for bathing to washing machine that supply with, the water-supplying mouth that the joint that is installed on an end of this flexible pipe is inserted washing machine body is placed on the other end of flexible pipe in the bathtub.

But, though the inner peripheral surface of above-mentioned flexible pipe can be made smooth, but any part flexible stretchability on the length direction of the flexible pipe of the long size that reaches 4～6m usually all is impartial, can not make certain particular length is partly had the performance different with other parts.Again, when not using flexible pipe, have only ring-type to round to come the method for keeping, so bulky and be difficult to accommodate.Also exist in hose end and must prepare the problem that the other joint that is shaped is installed.

Brief summary of the invention

In view of the above problems, the objective of the invention is to, provide to make inner circulating resistance be held in as far as possible little, and operation and when non-use, can make the water supply hose that volume is not accommodated, the part number is few again easily in use with not increasing.

In order to achieve the above object, flexible conduit of the present invention, constitute by the tube unit that comprises the 1st corrugated part and the 2nd corrugated part, described the 1st corrugated part is: water supply hose is made make the extrusion resin tube swelling and the flexible conduit of progressive forming, make hose wall alternately form recess and protuberance and make the inner peripheral surface formation of described recess and the tabular surface of the axis almost parallel of flexible pipe along the axial direction of flexible pipe; Described the 2nd corrugated part is: hose wall is being made the section general triangular and is being that the center makes relative the opposing party's of hypotenuse of a side hypotenuse be varied to the deflated state of almost parallel and keeps this state near leg-of-mutton top with this under the elongation state, more than the integrally formed at least Unit 2 of this tube unit.

Above-mentioned flexible conduit, the end integrally formed (claim 2) of mouth end and tube unit, the axial direction length of the 1st corrugated part in the tube unit partly forms than the axial direction length of the 2nd corrugated part part big (claim 3), preferably, the axial direction length of the 1st corrugated part partly forms than big 4～8 times (claim 4) of axial direction length part of the 2nd corrugated part, again, the width of the recess of the 1st corrugated part forms than the width of protuberance wide (claim 5), the waveform of the 1st corrugated part forms helical (claim 6), and the outer circumferential face of the recess of the 1st corrugated part forms serrated face (claim 7).Also have the tube unit (claim 8) that forms the 2nd corrugated part in the mouth back, end that is inserted in the washing machine water-supplying mouth, a side's of the 2nd corrugated part hypotenuse length forms to such an extent that lack (claim 9) than the opposing party's hypotenuse length.

In addition, the present invention is, for example the water for bathing water supply hose is made and make the extrusion resin tube swelling and the flexible conduit of progressive forming, the major length part of flexible pipe, by hose wall is alternately formed spiral helicine recess and protuberance and spiral corrugated part that the inner peripheral surface of described recess is formed with the tabular surface of the axis almost parallel of flexible pipe constitutes along the axial direction of flexible pipe, the width of the recess of described spiral corrugated part forms widelyer than the width of protuberance, and the outer circumferential face of described recess forms serrated face (claim 10).Preferably, described spiral corrugated part accounts for the length part (claim 11) more than 70% of flexible pipe total length.

The simple declaration of accompanying drawing

Fig. 1 is the skeleton diagram of the former of flexible conduit.

Fig. 2 is the unitary side view of tube unit.

Fig. 3 is the part sectional side view of the 1st corrugated part.

Fig. 4 is the amplification view of the 1st corrugated part hose wall.

Fig. 5 is the part cutaway view Amplified image of the elongation posture of the 2nd corrugated part.

Fig. 6 is the part cutaway view Amplified image of the contraction posture of the 2nd corrugated part.

Fig. 7 is the unitary side view that the expression flexible conduit is accommodated form.

Fig. 8 is the diagrammatic sketch of the user mode of water for bathing water supply hose.

The working of an invention form

Below, with reference to accompanying drawing concrete example of the present invention is described.

Water supply hose of the present invention is to utilize summary former shown in Figure 1 to make the extrusion resin tube swelling and the flexible pipe of progressive forming basically, constitutes, is known as in the industry flexible conduit by the olefin-based resin of polyethylene, polypropylene etc.Promptly, from the nozzle 50 of extruder the pipe of molten state is extruded in a pair of former 51,51 that relative mould device is connected to form the crawler belt shape respectively, simultaneously blow forced air and be close to, then hardening by cooling and make the flexible pipe H progressive forming of snake abdomen shape with the forming face of mould device to tube interior.In addition, utilize the vacuum forming that attracts pipe from the outside to replace and blow forced air, can form too to tube interior.

Fig. 2 is the overall structure figure of tube unit 1 of the component unit of the expression flexible pipe H that becomes the embodiment of the invention.Tube unit 1 forms the roughly mouth end 30 of straight line shape of the 1st corrugated part 10 that accounts for A length in its total length (800mm) and the 2nd corrugated part 20 that accounts for B length and two ends.As the preferred examples of present embodiment, the length that the length of A is made 600mm, B makes 100mm, and making A/B is 6 times.

Fig. 3 is the part sectional side view of the 1st corrugated part 10, Fig. 4 is the amplification view of hose wall only, hose wall is for alternately forming the helicon shape of spiral helicine protuberance 11 and recess 13, and the inner peripheral surface 13a of recess 13 is that tabular surface, the outer circumferential face 13b of roughly straight line shape and formation and flexible pipe axis almost parallel forms serrated face.As the preferred examples of present embodiment, the width T that the width S of recess 13 makes 4mm, protuberance 11 makes 2.5mm, and because of the relation of S＞T, the spiral chute 12 of protuberance 11 inboards reduces.

Fig. 5 is the part cutaway view Amplified image of the 2nd corrugated part 20, and hose wall forms the concavo-convex waveform of ring-type, and its section shape is a triangle, and is that the center makes a side inclined wall 22 form long sizes, makes the opposing party's inclined wall 23 form short sizes with top 21.And, when flexible pipe is shaped, form the elongation posture as shown in Figure 5, in nature, keep this to uphold posture, when when axial direction applies external force, as shown in Figure 6, the right side inclined wall 23 that makes short size is made the left side wall 22 of growth size relatively and is deformed into the deflated state of almost parallel, and this deflated state of self-sustaining.

Mouthful end the 30, the 30th,, the joint of the water-supplying mouth of one side's main composition and washing machine body also forms to end direction continuously from the 2nd corrugated part 20, and the opposing party forms continuously from the 1st corrugated part 10.At this opposing party's mouth 30 places, end, as described below, like that in series to form the 2nd tube unit among Fig. 2 shown in the dotted line continuously.

Fig. 7 forms above-mentioned tube unit 1 continuously 5 unit, makes the figure of 1 water supply hose H, and the state of accommodating when representing its non-use.Accommodate in the state at this, the 1st corrugated part 10 that accounts for the major length of the 1st tube unit 1 is not held in straight line shape agley, the 2nd corrugated part 20 is bent into roughly 180 degree and self-sustainings, make the 2nd tube unit 1 conversion direction that joins with it, its the 1st corrugated part 10 is not held in straight line shape agley yet, and the tube unit that joins with it is later on similarly with these the 1st corrugated parts 10,10 ... making mutual almost parallel state ground accommodates.

Fig. 8 represents the water of bathtub 41 up inhaled and the use example of the water supply hose H that supplies with to washing machine body 40, the water-supplying mouth (not shown) that washing machine bodies are inserted in the mouth end 30 of the tube unit 1 of flexible pipe H one end, and 20 bendings of the 2nd corrugated part are fixed into approximate right angle, the other end of flexible pipe H is sunk to bathtub.As required, also filter can be installed at its other end.

Present embodiment adopts said structure can obtain following advantage:

(1) owing to the recess inner peripheral surface with the 1st corrugated part 10 makes tabular surface, so it is less that the water flowing resistance is held in.Especially, in the occasion of the shared length A of the tube unit 1 of the 1st corrugated part 10 length B big several times more shared, and the recess occasion wideer of the 1st corrugated part 10, can suppress circulating resistance as far as possible little than protuberance width than the 2nd corrugated part.

(2) owing to will have and to have concurrently with elongation posture and the 2nd corrugated part 20 and the 1st corrugated part that two kinds of postures of dwindling posture make the performance of self-sustaining posture tube unit 1, so it is easy to use, especially, the flexible pipe of long size can be bent into the little form of accommodating of volume.

(3) for being connected of washing machine body, by utilizing the mouth end 30 integrally formed, just do not need other to connect the part of usefulness with the end.In addition, form the occasion of the 2nd corrugated part 20 in the back of mouth end 30, the hose end bending can be fixed into required angle ground and carry out stringing.

(4) when the 1st corrugated part 10 is made spiral helicine waveform, compare with the waveform of ring-type, the situation that Guan Zhongshui remains in the spiral chute of protuberance inboard is less.

(5) when the recess outer circumferential face with the 1st corrugated part 10 makes serrated face, except in shaping, the recess inner peripheral surface being formed the tabular surface dimensional strength in the time of can also improving bending easily.

In addition, flexible conduit of the present invention is not limited to described embodiment, can carry out various changes in its aim scope.For example, the waveform of the 1st corrugated part also can be a ring-type, but the 2nd corrugated part can adopt the known structure that makes the self-sustaining posture with elongation posture and two kinds of postures of dwindling posture, also its waveform can be made curl.In addition, the purposes to flexible conduit is not limited, and can be used for water supply hose purposes in addition yet.

Adopt the present invention, the flexible conduit of the basic structure that alternately forms as recess and protuberance, circulating resistance is increased, by effectively utilizing the characteristic of flexible conduit, can guarantee the easiness that is connected with other thing and reduce the part number, also because space certainly not accommodated, be saved to can be the freely crooked fixedly degree height of flexible pipe so can use easily, can also by volume not bigly.

Claims (11)

1, a kind of flexible conduit, it is characterized in that, constitute by the tube unit that comprises the 1st corrugated part and the 2nd corrugated part, described the 1st corrugated part is to make the extrusion resin tube swelling and the continuous flexible pipe that forms, and hose wall alternately forms recess and protuberance along the axial direction of flexible pipe, and makes the inner peripheral surface formation of described recess and the tabular surface of the axis almost parallel of flexible pipe; Described the 2nd corrugated part is that hose wall is made the section general triangular under elongation state, and being that the center makes relative the opposing party's of hypotenuse of a side hypotenuse be varied to the deflated state of almost parallel and keeps this state near this leg-of-mutton top, more than the integrally formed at least Unit 2 of this tube unit.

2, flexible conduit as claimed in claim 1 is characterized in that, the end of tube unit has formed a mouthful end.

3, flexible conduit as claimed in claim 1 is characterized in that, the axial direction length of the 1st corrugated part in the tube unit partly forms greatlyyer than the axial direction length part of the 2nd corrugated part.

4, flexible conduit as claimed in claim 3 is characterized in that, the axial direction length of the 1st corrugated part partly forms greatlyyer 4～8 times than the axial direction length part of the 2nd corrugated part.

5, flexible conduit as claimed in claim 1 is characterized in that, the width of the recess of the 1st corrugated part forms widelyer than the width of protuberance.

6, flexible conduit as claimed in claim 1 is characterized in that, the waveform of the 1st corrugated part forms helical.

7, flexible conduit as claimed in claim 1 is characterized in that, the outer circumferential face of the recess of the 1st corrugated part forms serrated face.

8, flexible conduit as claimed in claim 2 is characterized in that, is formed with the 2nd corrugated part in the mouth back, end of the water-supplying mouth that is inserted in washing machine.

9, flexible conduit as claimed in claim 1 is characterized in that, a side's of the 2nd corrugated part hypotenuse length forms shortlyer than the opposing party's hypotenuse length.

10, a kind of flexible conduit, it is characterized in that, be to make the extrusion resin tube swelling and the flexible pipe of progressive forming, hose wall is alternately formed spiral helicine recess and protuberance along the axial direction of flexible pipe, and the inner peripheral surface of described recess formed the major length part that accounts for flexible pipe with the helicon shape portion of the tabular surface of the axis almost parallel of flexible pipe, and the width of the recess of described spiral corrugated part forms widelyer than the width of protuberance, and the outer circumferential face of described recess forms serrated face.

11, flexible conduit as claimed in claim 10 is characterized in that, the spiral corrugated part accounts for the length part more than 70% of flexible pipe total length.

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