WO2009084339A1

WO2009084339A1 - Metal-like hose

Info

Publication number: WO2009084339A1
Application number: PCT/JP2008/070928
Authority: WO
Inventors: Katsuhito Hirose
Original assignee: Fitt Toyox Co., Ltd.
Priority date: 2007-12-28
Filing date: 2008-11-18
Publication date: 2009-07-09
Also published as: HK1149065A1; CN101896754B; JPWO2009084339A1; JP4481364B2; CN101896754A

Abstract

Appearance is improved while preventing intrusion of water into a hose and breaking or cutting of a tubular layer. At the spiral portion of a tubular layer (3) facing the exposed spiral outer surface (1a) of a hose body (1), a recess (3a) is formed to bend toward the hose body (1), the inner surface (3b) of the recess is made to adhere to the exposed spiral outer surface (1a) of a hose body (1), and the laminated portion (3c) of the tubular layer (3) laminated on a reinforcement (2) is formed to become thinner from the center part in the axial direction of the hose toward the opposite ends (3d) thereof. Consequently, the recess (3a) of the tubular layer (3) and the exposed spiral outer surface (1a) of the hose body (1) are integrated with no gap, and the strip material (2a) of the reinforcement (2) is viewed three-dimensionally through convex lens action of the laminated portion (3c) which is bulging to have a substantially arcuate section.

Description

Metal tone hose

The present invention relates to, for example, a metal-like hose which is used as a shower hose in a hot and humid place such as a bathroom and the like is mainly made of a synthetic resin and whose appearance is metallically shiny.
In detail, a reinforcing body having a band member shining in a metallic color is spirally wound on the outer surface of the hose main body at intervals, and a transparent or translucent tubular layer is applied to the entire outer side, The present invention relates to a metal-like hose in which the metal color of a strip material can be seen through from the outside.

Conventionally, as this type of metal-like hose, a band-like metal layer for decoration that shines in a metallic color is spirally wound in the axial direction of the hose along the surface of the hose body, and a gap is formed between the metal layers for decoration There is one in which a transparent or translucent protective layer is adhered in close contact with each other on the surface of the hose main body and the outer side of the metal layer for decoration (see, for example, Patent Document 1).

Registered Utility Model No. 3134233 (page 3-4, FIG. 1-4)

However, in such a conventional metal-like hose, since a spiral gap is left between the metal layers for reinforcement (reinforcement), there is a risk that water may infiltrate into this gap. There is a problem that the transparent or translucent protective layer (cylindrical layer) may lose transparency and the commercial value may be significantly reduced.
Furthermore, since no tubular layer adheres to the helical gap formed between the tubular layer and the reinforcing member and is in a free state, when the hose is bent and deformed, the tubular layer is freed. There is also a problem that the part is easily broken or broken.
In addition, since a flat tubular layer is laminated on a strip-like metal layer (band-like material) for decoration that shines to a metallic color, the decorative metal layer can be seen through from outside through this tubular layer. Also, there is also a problem that the appearance is inferior only by the appearance of a flat belt-like metal color.

The first invention of the present invention aims to improve the appearance while preventing water from entering the inside of the hose and breakage or breakage of the tubular layer.
In addition to the object of the first invention, the second invention aims to easily adhere the tubular layer to the spiral exposed outer surface of the hose body by a simple process.
The third invention is, in addition to the object of the first invention or the second invention, an object of the present invention to simply and uniformly manufacture a hose in which a band material of a reinforcing body looks three-dimensional.
In addition to the object of the first invention, the second invention or the third invention, the fourth invention aims at bringing the cylindrical body into close contact without any gap when pressing the cylindrical body to the outer surface of the hose. is there.

In order to achieve the above-mentioned object, according to a first aspect of the present invention, a concave portion which is bent toward the hose main body is formed in the helical portion of the cylindrical layer opposed to the spiral exposed outer surface of the hose main body. , The inner surface is in close contact with the spiral exposed outer surface of the hose main body, and the laminated portion of the tubular layer laminated on the reinforcing body is thinned from the center portion in the axial direction of the hose toward both end portions 3d It is characterized in that
The second invention is characterized in that the reinforcing body is added to the structure of the first invention in such a shape that the opposite side surfaces thereof are narrowed toward the laminated portion of the tubular layer. .
The third invention is characterized in that a configuration in which the upper surface of the reinforcing body is expanded in a circular arc shape in cross section is added to the configuration of the first invention or the second invention.
According to a fourth aspect of the present invention, in the configuration of the first aspect, the second aspect or the third aspect, the diameter of the outer periphery of the concave portion and the laminated portion of the tubular layer is reduced to elastically deform the laminated portion. It is characterized in that an arrangement is made such that it is flush with the surface of the concave portion.

According to a first aspect of the present invention, in the helical portion of the tubular layer facing the helical exposed outer surface of the hose body, a concave portion bent toward the hose body is formed, and The cylindrical layer is formed in such a shape as to be in close contact with the spiral exposed outer surface, and to form a laminated portion of the cylindrical layers laminated on the reinforcing body so as to become thinner from the center portion in the axial direction of the hose toward both end portions 3d. Between the concave part of the main body and the spiral exposed outer surface of the hose main body without any gap, and the strip material of the reinforcing body is sterically three-dimensionally from the outside by a convex lens function which is transmitted through the laminated portion bulging in a substantially arc shape in cross section. appear.
Therefore, the appearance can be improved while preventing the entry of water into the hose and the breakage or breakage of the tubular layer.
As a result, compared with the conventional one in which a spiral gap is left between the reinforcements, it has a long life and an excellent appearance, and can be used without deterioration in the appearance over a long period of time, thus improving the commercial value. Can be

In a second aspect of the invention, in addition to the effects of the first aspect, the reinforcing body has a shape in which the opposing side surfaces thereof are narrowed toward the laminated portion of the tubular layer to form a helical shape of the hose body. The angled portion consisting of the exposed outer surface and the side surface of the reinforcing body has an obtuse angle, and the bent portion of the cylindrical layer is completely in close contact with the corner portion only by depositing the cylindrical layer thereon.
Therefore, the tubular layer can be easily adhered to the spiral exposed outer surface of the hose body by simple processing.
As a result, it is easy to manufacture and can completely prevent the entry of water into the inside of the hose, resulting in a sense of luxury.

In the third invention, in addition to the effects of the first invention or the second invention, the cylindrical layer is adhered along the upper surface by forming the upper surface of the reinforcing body in a shape that bulges in a circular arc shape in cross section. By doing so, the laminated portion of the cylindrical layer has a shape that bulges in a circular arc shape in cross section.
Therefore, it is possible to easily and uniformly manufacture a hose in which the reinforcing strip material looks three-dimensional.
As a result, it is possible to uniformly realize the convex lens action which is transmitted through the laminated portion.

In the fourth invention, in addition to the effects of the first invention, the second invention or the third invention, the diameter of the outer periphery of the concave portion and the laminated portion of the cylindrical layer is reduced, thereby elastically deforming the laminated portion Then, the outer peripheral surface of the concave portion and the laminated portion is uniformly compressed over the entire circumference of the hose by arranging so as to be flush with the surface of the concave portion.
Therefore, when the cylindrical body is pressure-welded to the outer surface of the hose, it can be closely attached without any gap.
As a result, put a sleeve on the outer periphery of the hose and reduce the diameter of the sleeve so that the inner peripheral surface of the hose is in close contact with the outer peripheral surface of the nipple or tighten with a hose band such as a flat band arranged on the outer periphery of the hose. Therefore, even if the inner circumferential surface of the hose is in close contact with the outer circumferential surface of the nipple, when the internal pressure of the fluid passing through the hose becomes high, there is no leakage of the fluid or hose disconnection and it is safe. It is economical because there is no need to use a hose band.

The embodiment of the metal-toned hose A according to the present invention, as shown in FIGS. 1 to 4, is a flexible hose main body 1, a reinforcing member 2 containing a strip material 2a having at least a surface that glows metallic color, and Alternatively, the reinforcing body 2 is spirally wound at a predetermined interval in the axial direction of the hose along the outer surface of the hose main body 1 along the outer surface of the semi-transparent cylindrical layer 3, and then the spiral exposed outer surface of the hose main body 1 1a and the outside of the reinforcing member 2 projecting in a spiral shape from each other by making the cylindrical layers 3 in close contact with each other and laminating respectively and integrating them, the color of the strip material 2a is transmitted through the cylindrical layer 3 Is visible from the outside.

The hose main body 1 is formed in a cylindrical shape, for example, with a vinyl chloride resin, a urethane resin, or a soft synthetic resin of the same type, and at least the outer surface of the hose main body 1 is, for example, It is preferable to make it opaque colors, such as black.

It is preferable that a plurality of reinforcing yarns 1b be embedded in the inside of the hose main body 1 in a net shape.
As the reinforcing yarn 1b, for example, a resin fiber such as polyester, nylon, or aramid, a multifilament obtained by knitting a thin monofilament (monofilament), or a monofilament such as an olefin resin or a polyester resin is used.
As an example of the embedding, the reinforcing yarn 1b is spirally wound along the outer peripheral surface of the inner layer 1c of the hose main body 1 to form a net, or knitted into a cylindrical net by knit knitting etc. It is preferable to laminate 1d and integrate these.
In particular, when a monofilament is used as the reinforcing yarn 1b, the hose main body 1 is not easily crushed due to the rigidity of the monofilament, and the shape retention performance of the entire hose can be improved.

Furthermore, in addition to the reinforcing yarn 1b, a coil (not shown) made of a hard synthetic resin wire such as a thick monofilament (stretched monofilament), a metal wire such as stainless steel, or a similar hard material is embedded in a spiral. It is also possible to embed the coil in a spiral instead of the reinforcing thread 1b.

The reinforcing body 2 is composed of a strip material 2a whose surface shines in a metallic color, a reinforcing main body 2b laminated on the inner side in the radial direction, and a film 2c coated around these.

The strip material 2a is formed in a film shape or a thin plate shape from a metal foil band such as aluminum foil or stainless steel foil, or a material having at least a surface similar to the metal foil, for example.

The reinforcing main body 2b is formed of, for example, nylon, polypropylene or the like hard or semi-rigid synthetic resin in a substantially rectangular shape in cross section, and by winding it around the hose main body 1, the hose is made rigid while achieving weight reduction. Shape retention is given to prevent the entire hose from collapsing and partial denting.

The film 2c is a material of the hose main body 1 and the cylindrical layer 3 in order to connect the reinforcement main body 2b and the cylindrical body 3 described later and the cylindrical layer 3 described later with non-adhesive properties. And a transparent soft synthetic resin such as a vinyl chloride resin as the hose main body 1 is formed as a coating on the belt material 2a and the reinforcing main body 2b as a synthetic resin material having good adhesion with The outer peripheral surfaces of 1 are bonded to be integrally connected.
Thus, since the reinforcing main body 2b and the coating 2c are not adhered to each other, the reinforcing main body 2b is displaced as the hose bends, and the flexibility is improved.
When the reinforcing main body 2b is made of an adhesive material with the hose main body 1 and the tubular layer 3, the film 2c may be omitted.

The tubular layer 3 is made of a transparent or translucent soft synthetic resin, specifically a vinyl chloride resin, or a non-yellowing polycarbonate polyurethane resin (Milactolan (registered trademark) which is excellent in light resistance and mechanical strength more than vinyl chloride resin. Trademark XN-2001: made of Nippon Polyurethane Industry Co., Ltd. or the like, or a non-yellowing polycarbonate-based polyurethane resin, and formed into a cylindrical shape by extrusion molding or the like.

Then, when the tubular layer 3 is laminated over the spiral exposed outer surface 1a of the hose main body 1 exposed between the reinforcing bodies 2 and the outer side of the reinforcing body 2 projecting in a spiral shape from this, this hose main body 1 A spiral gap exists between the spiral exposed outer surface 1 a and the cylindrical layer 3.

Therefore, a concave portion which is bent toward the hose main body 1 in a later step in the non-adhesive spiral portion of the cylindrical layer 3 opposed to the spiral exposed outer surface 1a of the hose main body 1 with a spiral gap. By forming 3a, the inner surface 3b of the concave portion 3a is brought into close contact with the spiral exposed outer surface 1a of the hose main body 1, and the tubular layer is laminated on the reinforcing body 2 between the concave portions 3a. The laminated part 3c of 3 is formed in the shape which becomes thin toward the hose axial direction both-ends part 3d from the hose axial direction center part.
Specifically, the central portion of the laminated portion 3c in the axial direction of the hose is most expanded radially outward, and a flat portion having a predetermined diameter in the axial direction of the hose is formed at the central portion with the same diameter. It is formed so as to be gradually thinner toward the end, and each laminated portion 3c is entirely expanded in a substantially arc shape in cross section, or a flat portion is not formed in the central portion in the hose axial direction of the laminated portion 3c; It forms so that it may become thin gradually toward a center part to both-ends part 3d, and is making each laminated part 3c bulging out in the cross-sectional circular arc shape as a whole.

As a method of manufacturing the hose, while integrally laminating the cylindrical layer 3 by extruding a soft synthetic resin or the like over the spiral exposed outer surface 1 a of the hose main body 1 and the outside of the reinforcing body 2, The non-adhesive spiral inner surface 3b of the cylindrical layer 3 is attached to the spiral exposed outer surface 1a by suctioning and decompressing air remaining between the spiral exposed outer surface 1a of the main body 1 and the cylindrical layer 3 or the like. It is preferable to form a spiral concave portion 3 a on the outer surface of the cylindrical layer 3 by close contact.
Also, instead of sucking and depressurizing the air remaining between the spiral exposed outer surface 1a of the hose main body 1 and the tubular layer 3, the tubular layer is produced by the pressure from the outside by a fluid such as air or water, for example. It is also possible to bring three non-adhesive spiral inner surfaces 3b into close contact with the spiral exposed outer surface 1a.
Hereinafter, embodiments of the present invention will be described based on the drawings.

In the first embodiment, as shown in FIGS. 1 (a) to 1 (c), the reinforcing body 2 has a substantially rectangular cross-sectional shape of the coating 2c formed on the outer surface of the hose main body 1 in a spiral shape. The non-bonded spiral inner surface 3b of the cylindrical layer 3 is brought into close contact with the spiral exposed outer surface 1a of the hose main body 1 while the cylindrical layer 3 is laminated by extrusion on the outside thereof, and the concave portion 3a is formed. At the same time, the laminated portion 3c of the tubular layer 3 has a flat portion with a predetermined width at the center in the axial direction of the hose and has a substantially arc-shaped cross section gradually thinning from the flat portion toward both end portions 3d. It shows the case where it is formed.

As an example of the manufacturing method, the hose main body 1 and an extruder (not shown) are relatively moved in the axial direction of the hose, and a cylindrical flexible layer is formed by extruding a soft synthetic resin from the extruder. After 3 are laminated, the pressure between the spiral exposed outer surface 1a of the hose main body 1 and the tubular layer 3 is reduced or the pressure from the outside is applied to the non-adhesive helical portion of the tubular layer 3 The concave portion 3 a is formed by bending and deforming toward the main body 1, and the inner surface 3 b is in close contact with the spiral exposed outer surface 1 a of the hose main body 1.

Even if the film 2c of the reinforcing body 2 is extruded to have a rectangular cross section, as shown in FIG. 1 (b), the corners 2d are flow-deformed due to the flowability of the soft synthetic resin that is the material of the film 2c. It is curved in an arc shape in cross section, and the entire cross sectional shape becomes substantially rectangular.
In this case, the cylindrical layer 3 is forcibly bent and deformed to form the concave portion 3a, and the inner surface 3b is brought into close contact with the spiral exposed outer surface 1a of the hose main body 1, as shown in FIG. As shown, the flowability of the cylindrical layer 3 causes the flow deformation of the both end portions 3d of the laminated portion 3c of the cylindrical layer 3 in contact with the corner portions 2d of both ends of the reinforcing body 2 in the axial direction of the hose.
As a result, although the cross-sectional shape of each laminated portion 3c has a flat portion at the center in the axial direction of the hose, the cross-sectional shape swells in a substantially arc-shaped cross section gradually thinning from there toward the both end portions 3d.

Moreover, it is also possible to comprise the inner layer 1c of the said hose main body 1 by several layers.
In the illustrated example, the innermost layer 1e made of a material suitable for the nature of the fluid passing through the inside of the hose body 1 is integrally formed inside the inner layer 1c made of a synthetic resin material having good adhesion with the coating 2c of the reinforcing body 2 described above. Is stacked on.

Furthermore, in the illustrated example, a plurality of resin fibers, multifilaments, etc. are spirally wound at predetermined intervals and crossed as the reinforcing yarn 1b, and in addition to this, in the axial direction of the hose main body 1 Also in the circumferential direction, a plurality of tubes are arranged at predetermined intervals.

Next, the function and effect of the metal-like hose A will be described.
First, as shown in FIGS. 1 (a) and 1 (c), the non-adhesive spiral portion of the cylindrical layer 3 opposed to the spiral exposed outer surface 1a of the hose body 1 is bent and deformed toward the hose body 1. In order to bring the inner surface 3b into close contact with the spiral exposed outer surface 1a of the hose main body 1, a gap is formed between the concave portion 3a of the tubular layer 3 and the spiral exposed outer surface 1a of the hose main body 1 Will disappear.

As a result, it is possible to prevent water from entering the inside of the hose main body 1 and all the tubular layers 3 are in close contact with the spiral exposed outer surface 1 a of the hose main body 1 and the coating 2 c of the reinforcing body 2. Since the reinforcing body 2 and the non-adhesive free part are eliminated, it is possible to prevent the tubular layer 3 from being broken or broken due to bending deformation of the hose body 1 or the like.

Furthermore, at the same time, since the laminated portion 3c of the cylindrical layer 3 is formed in a shape that bulges in a substantially arc shape in cross section, lamination in which the strip material 2a of the reinforcing body 2 bulges in a substantially arc shape in cross section It looks through the part 3c.

As a result, the laminated portion 3c which bulges in a substantially arc shape in cross section becomes a convex lens, and the strip material 2a of the reinforcing body 2 is seen three-dimensionally from the outside, and the appearance is excellent.
In particular, when the width dimension of the strip 2a of the reinforcing body 2 is increased and the width dimension of the concave portion 3a of the cylindrical layer 3 disposed therebetween is narrowed, the portion without the strip 2a becomes inconspicuous. The whole of the metal-like hose A looks like a metal hose formed by spirally winding a metal band plate, and has an advantage that a heavy feeling and high-class feeling can be obtained.

In this second embodiment, as shown in FIGS. 2 (a) to 2 (c), the opposing side surfaces 2e of the coating 2c of the reinforcing body 2 are opposed to the laminated portion 3c of the cylindrical layer 3 to be laminated thereafter. The configuration in which the width is made narrower is different from that of the first embodiment shown in FIG. 1, and the other configuration is the same as that of the first embodiment shown in FIG.

In the illustrated example, as shown in FIG. 2 (b), the cross-sectional shape of the reinforcing body 2 causes the opposing side surfaces 2e of the coating 2c to incline linearly, and the corner portion 2d is flow-deformed to have a cross-sectional circle The case where it is the substantially trapezoid curved in the shape of an arc is shown.
As another example, it is also possible to make the both sides 2e of the film 2c into an arc shape slightly bulging outward.

Also in this case, the cylindrical layer 3 is forcibly bent and deformed to form the concave portion 3a, and the inner surface 3b is brought into close contact with the spiral exposed outer surface 1a of the hose main body 1, as shown in FIG. As shown, the flowability of the cylindrical layer 3 causes the flow deformation of the both end portions 3d of the laminated portion 3c of the cylindrical layer 3 in contact with the corner portions 2d of both ends of the reinforcing body 2 in the axial direction of the hose.
As a result, although the cross-sectional shape of each laminated portion 3c has a flat portion at the center in the axial direction of the hose, the cross-sectional shape swells in a substantially arc-shaped cross section gradually thinning from there toward the both end portions 3d.

Accordingly, the second embodiment shown in FIG. 2 also achieves the same function and effect as the first embodiment described above, and additionally, as shown in FIG. 2 (b), the spiral exposed outer surface 1a of the hose main body 1 and the reinforcement Since the corner portion 4 composed of the side surface 2e of the body 2 has an obtuse angle, the bent portion 3a of the tubular layer 3 is completely in close contact with the corner portion 4 simply by depositing the tubular layer 3 along the upper side. Do.
As a result, the tubular layer 3 can be easily adhered to the spiral exposed outer surface 1a of the hose main body 1 by simple processing, and entry of water into the interior of the hose main body 1 can be completely prevented, and a sense of luxury is produced. There is an advantage.

In the third embodiment, as shown in FIGS. 3 (a) to 3 (c), the configuration in which the upper surface 2f of the film 2c of the reinforcing body 2 is shaped to bulge in a circular arc shape is the embodiment shown in FIG. Unlike Example 1, the other configuration is the same as that of Example 1 shown in FIG.

In the example of illustration, the case where the cross-sectional shape of the said reinforcement body 2 is substantially semicircle which curved the upper surface 2f and the both-sides surface 2e of the film 2c circularly is shown.
As another example, it is also possible to make it a substantially semi-elliptical shape or a similar shape.

Therefore, also in the third embodiment shown in FIG. 3, the same function and effect as the first embodiment described above can be obtained, and additionally, as shown in FIG. 3 (c), the upper surface 2f of the film 2c bulges in a circular arc shape in cross section. Therefore, even if a thermoplastic resin excellent in fluidity is not used as a material of the film 2c of the reinforcing body 2, the cylindrical layer 3 is simply adhered along the upper surface 2f. The laminated portion 3c has a shape that bulges in an arc shape in cross section along the upper surface 2f of the film 2c.
As a result, regardless of the material of the film 2c, it is possible to easily and uniformly manufacture a hose in which the strip material 2a of the reinforcing body 2 can be seen three-dimensionally, and to realize uniformly the convex lens action through the laminated portion 3c.

In the fourth embodiment, as shown in FIGS. 4A to 4C, the concave portion 3a and the laminated portion 3c of the cylindrical layer 3 are formed in a gentle wave shape, and these concave portions 3a and the laminated portion 3c are formed. By squeezing the entire outer periphery in the radial direction and reducing the diameter, the laminated portion 3c is elastically deformed to be substantially flush with or completely flush with the surface of the concave portion 3a, as shown in FIG. The second embodiment differs from the second embodiment shown in FIG. 2 or the third embodiment shown in FIG. 3, and the other configuration is the first embodiment shown in FIG. 1 or the second embodiment shown in FIG. Alternatively, it is the same as the third embodiment shown in FIG.

As an example of the manufacturing method, the hose main body 1 and the extruder are relatively moved in the axial direction of the hose, and a large amount of soft synthetic resin is extracted from the extruder by the spiral exposed outer surface 1a of the hose main body 1 And extruding while pressing toward the reinforcing body 2, in particular, by forcibly pouring and burying a large amount of soft synthetic resin in the spiral groove of the spiral exposed outer surface 1a and laminating the cylindrical layer 3, According to the moving speed of the hose main body 1 and the balance of the amount of extrusion of the soft synthetic resin, the unevenness difference between the laminated portion 3c and the concave portion 3a is small and the surface has a gentle wave shape.
Thus, the cross-sectional shape of each laminated portion 3c is likely to be a circular arc having a cross-sectional shape in which a flat portion is not formed at the center in the axial direction of the hose and gradually thins from the center to both end portions 3d.

In the illustrated example, as shown in FIG. 4B, as in the first embodiment, the cross-sectional shape of the reinforcing body 2 is such that opposing side surfaces 2e of the coating 2c are parallel and straight, and the corner portion 2d is The case where it is substantially rectangular shape which carried out flow deformation and curved in the section circular arc shape is shown.
As another example, as shown in FIG. 2 (b), the cross-sectional shape of the reinforcing body 2 is inclined in a straight line on both side surfaces 2e, and the corners 2d are flow-deformed and curved in an arc shape in cross section. Alternatively, as shown in FIG. 3 (b), the top surface 2f and both side surfaces 2e of the coating 2c may be formed into a substantially semicircular shape having an arc shape or the like.

Accordingly, also in the fourth embodiment shown in FIG. 4, the same function and effect as the first to third embodiments described above can be obtained, and additionally, as shown in FIG. As a body, for example, a caulking sleeve (not shown) is covered, and the diameter of this sleeve is reduced in the radial direction so that the inner peripheral surface of the metal-like hose A is in close contact with the outer peripheral surface of a nipple (not shown) Even if the hose band is covered and the diameter is tightened in the radial direction with this hose band and the inner peripheral surface of the metal control hose A is in close contact with the outer peripheral surface of the nipple, the outer peripheral surfaces of the concave portion 3a and the laminated portion 3c Each is uniformly compressed over the circumference.
Accordingly, there is an advantage that when the cylindrical body, a hose band or the like is brought into pressure contact with the outer surface of the metal-toned hose A, it can be closely attached without a gap.
Furthermore, as compared with the first embodiment shown in FIG. 1 (c), since both end portions 3d of the laminated portion 3c covering the corner portions 2d at both ends in the hose axial direction of the reinforcing body 2 become thicker overall, they are broken. It also has the advantage of becoming difficult.

In Examples 1 to 3, the laminated portion 3c of the cylindrical layer 3 has a shape that swells in a substantially arc-shaped cross section gradually thinning from the flat portion at the center in the axial direction of the hose toward both end portions 3d. However, the present invention is not limited to this, and as shown in the fourth embodiment, the cross-sectional shape of the laminated portion 3c is such that a flat portion is not formed at the center in the axial direction of the hose, It is good also as a shape bulging out in the shape of an arc section.
Furthermore, in the illustrated examples of each of the first to fourth embodiments, there is shown a case of so-called single-strip winding in which one reinforcing body 2 is spirally wound at a predetermined interval in the axial direction of the hose along the surface of the hose main body 1 However, the present invention is not limited to this, and two or more reinforcing members 2 may be spirally wound at predetermined intervals in the axial direction of the hose along the surface of the hose main body 1, or may be double winding or triple winding etc. .
Also in this case, the same operation and effect as the above-described embodiment can be obtained, and in addition, the winding time of the reinforcing body 2 can be shortened as compared with single-row winding, whereby the manufacturing time and manufacturing cost can be reduced. There is.

(A) is a partially cutaway perspective view which shows one Example of the metal tone hose of this invention, (b) is the elements expanded sectional view of the location shown by 1A of Fig.1 (a), (c) Is a partially enlarged cross-sectional view of a portion shown by 1B in FIG. 1 (a). (A) is a partially cutaway perspective view showing another embodiment of the metal-like hose of the present invention, and (b) is a partially enlarged cross-sectional view of a portion shown by 2A in FIG. 2A is a partially enlarged cross-sectional view of a portion shown by 2B in FIG. (A) is a partially cutaway perspective view showing another embodiment of the metal-like hose of the present invention, and (b) is a partially enlarged cross-sectional view of a portion shown by 3A in FIG. 3B is a partially enlarged cross-sectional view of a portion shown by 3B in FIG. (A) is a partially cutaway perspective view showing another embodiment of the metal tone hose of the present invention, and (b) is a partially enlarged cross-sectional view of a portion shown by 4A in FIG. 4A is a partially enlarged cross-sectional view of a portion shown by 4B in FIG.

Explanation of sign

A Metal-like hose 1 Hose main body 1a Helical exposed outer surface

1b Reinforcement yarn

1c Inner layer

1d Outermost layer 1e Innermost layer 2 Reinforcement body 2a Reinforcement body 2b Reinforcement main body 2c Coating 2d Corner portion 2e Side surface 2f Upper surface 3 Tubular layer

3a Bending portion

3b Inner surface 3c Stacked part 3d both ends part corner part

Claims

On the outer surface of the hose main body (1), a reinforcing body (2) having a band material (2a) shining in metallic color is spirally wound at intervals, and a transparent or translucent tubular layer 3), and in the metal-like hose which made it possible to see through the metal color of the above-mentioned strip material (2a) from the outside,
A concave portion (3a) bent toward the hose main body (1) is formed in the spiral portion of the tubular layer (3) facing the spiral exposed outer surface (1a) of the hose main body (1) A laminated portion (3c) of the tubular layer (3) laminated on the reinforcing body (2) while closely adhering the inner surface (3b) to the spiral exposed outer surface (1a) of the hose main body (1) A metal-like hose characterized in that it is formed in a shape which becomes thinner from its center portion in the axial direction of the hose toward both end portions (3d) in the axial direction of the hose.
The metal-toned hose according to claim 1, wherein the reinforcing body (2) has a shape in which the opposite side surfaces (2e) facing each other narrow toward the laminated portion (3c) of the cylindrical layer (3).
The metal-like hose according to claim 1 or 2, wherein the upper surface (2f) of the reinforcing body (2) is shaped to bulge in a cross-sectional arc.
The diameter of the outer periphery of the concave portion (3a) and the laminated portion (3c) of the cylindrical layer (3) is reduced, so that the laminated portion (3c) is elastically deformed and the surface and the surface of the concave portion (3a) The metal-toned hose according to claim 1, 2 or 3, which is arranged to be one.