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Spiral reinforced hose

A hose and spiral technology, which is applied in the field of spiral reinforced hoses, can solve the problems of difficulty in purchasing extended monofilaments with thick diameters, lack of manufacturers, and reduced productivity, and achieves low expansion, low price, and improved pressure resistance Effect

Active Publication Date: 2008-08-06
TOYOX CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the conventional helically reinforced hose, since the drawn monofilament with a thick wire diameter is used, when a hose with a large outer diameter is manufactured, it is necessary to wind the drawn monofilament with a thick wire diameter according to the size of the hose. The demand for stretched monofilament with thick wire diameter is very small, and the manufacturer does not have the specifications for stretched monofilament with thick wire diameter, which makes it difficult to purchase. Therefore, it is necessary to order specially from the manufacturer, resulting in the problem of extremely high prices.
[0005] In addition, since the larger the wire diameter of the stretched monofilament, the greater the rigidity, the larger the equipment for winding the monofilament, which reduces its productivity. At the same time, the rigidity of the monofilament is stronger than that of the soft synthetic resin of the hose body. Therefore, unevenness occurs on the inside and outside of the hose, and there is a problem that impurities such as liquid residue remain

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In this embodiment 1, as shown in Figure 1, the hose body 1 is formed from a transparent or translucent material that can see through the inside. The filaments 2, 2 are wound in a helical shape in the axial direction of the hose at equal intervals, and at the same time, the cross-sectional shape of these extended monofilaments 2, 2 is formed into an ellipse or the like, and the core width dimension W is larger than the core thickness dimension D. flat shape.

[0035] The above-mentioned hose body 1, as shown in Publication No. 63-46783, is composed of an inner layer and an outer layer, and can be formed by inserting and winding two extended monofilaments 2, 2 between these inner layers and outer layers. As the spiral reinforced hose A, or as shown in JP-A-50-31198, by a well-known hose manufacturing method, a strip-shaped body having two extended monofilaments 2, 2 is wound into a helical shape, and the The adjoining surfaces are bonded to each other to form a spiral r...

Embodiment 2

[0047] In the second embodiment, as shown in FIG. 2, on the outer surface 1b of the hose body 1, an identification line 3 extending in the axial direction is provided, and the color of the identification line 3 is different from the color of the hose body 1. This is different from Embodiment 1 shown in FIG. 1 above, and other structures are the same as Embodiment 1 shown in FIG. 1 .

[0048] The above-mentioned identification line 3, for example, extrudes thermoplastic resins such as vinyl chloride resin or polyethylene, which is of the same quality and different color as the hose body 1, on the outer surface 1b of the hose, so that the two are integrated, or will be integrated with the hose body 1b. The body 1 is made of thermoplastic resin with the same quality and different colors, and is thermocompression-bonded on the outer surface 1b of the hose, so that the two are integrated.

[0049] In the example figure, although there is only one identification line 3 extending str...

Embodiment 3

[0053] In this embodiment 3, as shown in FIG. 3, in addition to changing the colors of the two extended monofilaments 2, 2 arranged axially toward the above-mentioned hose, the colors of these extended monofilaments 2, 2 can be seen from the outside of the hose body 1. The structure of the color is different from that of Example 1 shown in FIG. 1 above, but the other structures are the same as those of Example 1 shown in FIG. 1 .

[0054] For example, when at least the outer surface of one drawn monofilament 2 is formed in white, it is preferable to form at least the outer surface of the other drawn monofilament 2 in a clearly distinguishable combination such as green, red, or blue other than white.

[0055] In addition, in the illustrated example, the pitch S between the two stretched monofilaments 2, 2 aligned in the axial direction is set to 0 and abutted, and the cross-sectional shape of the two abutted states is formed into an ellipse or the like, And make it a flat shape...

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Abstract

A plurality of stretched monofilaments (2) are spirally wound at an equal pitch in a hose axial direction while the stretched monofilaments (2) are arranged, whereby a pressure-resistant performance in the portions does not deteriorate even when a pitch (S) between these stretched monofilaments (2, 2) narrows and a diameter of the monofilaments is reduced. Therefore, the stretched monofilaments having a small diameter is usable.

Description

technical field [0001] The present invention relates to a spiral reinforced hose, such as a suction hose or a pipeline hose, which is used for low pressure or negative pressure and has excellent pressure resistance and flexibility. A helically reinforced hose in which a monofilament (monofilament: monofilament) is extended to be wound in a helical shape. Background technique [0002] Conventionally, this type of spiral reinforced hose is sandwiched and wound into a coil spring shape between a soft synthetic resin inner layer (inner tube) and an outer layer (outer tube) constituting the hose body (resin tube). A drawn monofilament with a thick wire diameter (for example, refer to Patent Document 1). [0003] [Japanese Patent Document 1] Publication No. 63-46783 (page 1-2, Fig. 1-Fig. 3) [0004] However, in the conventional helically reinforced hose, since the drawn monofilament with a thick wire diameter is used, when a hose with a large outer diameter is manufactured, it ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L11/12F16L11/08
CPCF16L11/081A47L9/248
Inventor 锅岛义和萩原千广能岛宽典
Owner TOYOX CO LTD
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