JP2002286175A - Metallic composite hose, insert and hose fastening method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a metallic composite hose with excellent impermeability, flexibility, and fastening performance with a mating member, an insert useful for strong and high sealing performance fastening with the mating member, and a hose fastening method using this insert. SOLUTION: This metallic composite hose 1 has a metallic corrugated spiral tube 2 for constituting a hose inner layer, a rubber layer 3 or a resin layer covered so as to become a smooth outer peripheral shape by filling up a recess- projection shape of the outer periphery of the metallic corrugated spiral tube up to reaching an end part of the hose. This insert is a pipe body having an outer peripheral shape of a corrugated spiral shape threadedly engageable with an inner peripheral part of such a metallic composite hose, and is integrally formed with the mating member, or is integrally formed with a fastener having a proper fastening structure corresponding to the mating member. This hose fastening method fastens or can fasten the metallic composite hose to the mating member by threadedly engaging the insert with the end part to the metallic composite hose.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal composite hose in which the inner layer is formed of a metal corrugated helical tube, thereby realizing both the impermeability to liquids and gases and the flexibility of the hose. The present invention relates to an insert for facilitating fastening and a hose fastening method.

[0002]

2. Description of the Related Art Conventionally, various types of rubber hoses, which are advantageous in terms of vibration absorption and assemblability (flexibility), have been generally used in automobile fuel hoses. However, in recent years,
The importance of the fuel impermeability of hoses has become more important in consideration of the environment. Therefore, a hose including a resin layer having a higher fuel barrier property than rubber has been proposed. By using a resin layer harder than rubber, vibration absorption and assembly required for a hose for an automobile or the like are deteriorated. As a countermeasure, a new type of hose in which a part of the hose has a bent shape or a corrugated shape has attracted attention.

[0003] However, it is expected that regulations on permeation of fuels and the like will be further strengthened in the future, and on the other side, it is necessary to cope with highly permeable fluids such as air-conditioning refrigerants and hydrogen gas used in fuel cells. It is necessary to consider a hose using a metal layer, which can be expected to have a very high fluid impermeability, as a barrier layer. In the case of a hose having a metal layer as a barrier layer, it is necessary to form a very thin metal layer in order to secure the lightness, vibration absorption, and flexibility of the hose. Is advantageous.

[0004]

However, in the case of a hose having a metal layer as a barrier layer, there are many problems in consideration of the manufacturing process and the usage of the hose as an automobile hose. For example, if the metal layer is exposed to the outside,
Problems such as damage due to external impacts and corrosion due to rainwater or the like become problems.

[0005] A metal composite hose in which the metal layer is protected by a rubber layer or a resin layer, particularly a corrugated metal composite hose, is likely to complicate the manufacturing process or cause assembly problems. For example, if a rubber layer is formed using a mandrel while forming a metal tube, and then the two are integrated into a corrugated shape, the production efficiency is poor.

In the case of a metal composite hose in which only the central portion is formed in a corrugated shape and the end portion is formed in a straight tubular shape, there is no problem peculiar to the corrugated tube in fastening the end portion to a mating member. However, it is difficult to form the metal corrugated composite hose of such a form long because of a problem in processing.

In a metal composite hose having a corrugated shape up to the end of the hose, the corrugated shape in which the large-diameter annular portion and the small-diameter annular portion are repeatedly continuous is strongly fastened to the mating member with high sealing properties. It is difficult. In this case, conventionally, for example, the end face of the metal layer exposed at the end of the hose is welded to the mating member, but the welded portion is easily broken by the vibration of the hose or the like. Further, if the rubber layer or the resin layer is coated on the metal corrugated pipe, it may hinder the welding operation between the metals, or the heat at the time of welding may lead to deterioration of the rubber and the resin.

The present invention has been made to solve the above-mentioned various problems. The inventor of the present application has invented a metal composite hose having a specific configuration in a corrugated shape up to the end of the hose, and an insert and a hose fastening method for facilitating fastening of the hose to a mating member easily and well. Solved the problem.

[0009]

Means for Solving the Problems (Structure of the First Invention) The structure of the first invention of the present application (the invention of claim 1) for solving the above-mentioned problems is that a metal corrugated helical tube constituting an inner layer of a hose is provided. And a rubber layer or a resin layer coated so as to form a smooth outer peripheral shape by filling the uneven shape of the outer periphery of the metal corrugated spiral tube up to the end of the hose.

(Structure of the Second Invention) The structure of the second invention (the invention described in claim 2) for solving the above-mentioned problem is as follows.
On the outer periphery of the rubber layer or the resin layer according to the first invention, one or more components of a reinforcing layer, a resin layer, another metal layer or another rubber layer are formed in an arbitrary order, and a smooth layer is formed. This is a metal composite hose formed to have an outer peripheral shape.

(Structure of Third Invention) The structure of the third invention of the present application (the invention according to claim 3) for solving the above problems is as follows.
The constituent material of the metal corrugated spiral tube according to the first invention or the second invention is steel, alloy steel (including stainless steel),
The metal composite hose is made of aluminum, aluminum alloy, copper, copper alloy, nickel or nickel alloy.

(Structure of the Fourth Invention) The structure of the fourth invention of the present application (the invention according to claim 4) for solving the above problems is as follows.
A pipe body having a corrugated spiral outer peripheral shape that can be screwed to the inner peripheral part of the metal composite hose according to any of the first to third inventions, and having the following configuration 1) or 2), Insert.

1) The hose is formed integrally with a mating member to be fastened.

2) The hose is integrally formed with a fastener having an appropriate fastening structure corresponding to a mating member to be fastened.

(Structure of Fifth Invention) The structure of the fifth invention (the invention described in claim 5) for solving the above problems is as follows.
The insert according to the fourth aspect of the present invention is an insert made of metal or hard resin, and having a metal sleeve on the outer periphery thereof which can be extrapolated to the end of the hose.

(Structure of the Sixth Invention) The structure of the sixth invention (the invention described in claim 6) for solving the above problems is as follows.
Hose fastening by screwing the insert according to the fourth invention to the end of the metal composite hose according to any one of the first invention to the third invention, thereby fastening or enabling the metal composite hose to a mating member Is the way.

(Structure of the Seventh Invention) The structure of the seventh invention of the present application (the invention according to claim 7) for solving the above problems is as follows.
The metal composite hose according to any one of the first invention to the third invention is screwed into the end of the metal composite hose according to the fifth invention, and the sleeve is extrapolated and swaged to perform the metal composite hose. This is a hose fastening method in which a hose is fastened to or can be fastened to a mating member.

(Structure of Eighth Invention) The structure of the eighth invention (the invention according to claim 8) for solving the above problems is as follows.
In the hose fastening method according to the sixth or seventh invention, the hose is improved in sealing performance by applying the following 3) and / or 4) means for screwing the insert into the end of the metal composite hose. It is a fastening method.

3) The metal corrugated helical tube of the metal composite hose is made of stainless steel, and is subjected to an annealing treatment after its formation, and a metal insert is press-fitted thereto in a metal touch state.

4) A coating agent is applied in advance to the inner periphery of the metal corrugated spiral tube and / or the outer periphery of the insert.

[0021]

(Operation / Effect of the First Invention) In the metal composite hose of the first invention, the outer periphery of the metal corrugated spiral tube as the metal layer is covered with the rubber layer or the resin layer. There is no risk of the metal layer being damaged by an external impact or being corroded by rainwater or the like.

Further, since the metal corrugated spiral tube constitutes the inner layer of the hose, the rubber layer or the resin layer covering the hose does not need to be formed using a mandrel. Alternatively, the resin layer can be extruded, for example. Therefore, manufacturing efficiency is good.

Further, since the metal layer is formed up to the end of the hose in a corrugated spiral tube shape, the first layer is formed.
Second, it is easy to form the metal composite hose in a long length (theoretically infinite length). Secondly, for example, a pipe-shaped insert member having a corrugated spiral outer peripheral shape is formed on the inner peripheral surface. By press-fitting to the side and relaying it, it is easy to strongly fasten the metal composite hose with a mating member with high sealing properties. Therefore, it is not necessary to rely on an uncertain hose fastening method such as welding the end face of the metal layer exposed at the end of the hose to the mating member.

The rubber layer or the resin layer is covered so as to form a smooth outer peripheral shape by filling in the irregularities on the outer periphery of the metal corrugated spiral tube. Therefore, particularly when the insert member or the like is press-fitted to the inner peripheral side, the fastening strength of the metal composite hose with the mating member is swaged with a metal sleeve or the like, thereby further improving the coupling strength and sealing performance of the fastening part. be able to.

(Function / Effect of the Second Invention) As in the second invention, the metal composite hose further includes a reinforcing layer, another resin layer, another metal layer or another metal layer on the outer periphery of the rubber layer or the resin layer. One or more components of the rubber layer can be provided in any order. Also in this case, in short, the outer periphery of the metal corrugated spiral tube is covered with a rubber layer or the like, the metal corrugated spiral tube constitutes an inner layer of the hose, and the metal layer is formed until it reaches the end of the hose with the corrugated spiral tube shape. The metal composite hose is formed so as to have a smooth outer peripheral shape. Therefore, the functions and effects of the first invention are all ensured.

(Function / Effect of Third Invention) Any metal material can be selected as the metal material constituting the metal corrugated spiral tube. However, it is more preferable to use steel, alloy steel (including stainless steel), aluminum, aluminum alloy, copper, copper alloy, nickel or nickel alloy. For reasons to be described later, it is particularly preferable to form stainless steel, especially stainless steel into a corrugated spiral tube shape and then annealed (annealed).

(Operation / Effects of the Fourth Invention) As described above in the section of “Operation / Effects of the First Invention”, the insert of the fourth invention is, for example, a pipe or a system (for example, an arbitrary pipe) , Any system or device to which a metal composite hose can be connected, such as an automobile engine, a condenser of an air conditioner system, etc. The same applies hereinafter.) This is extremely useful for strongly fastening a composite hose with high sealing properties.

When the metal composite hose is fastened (assembly step) and the hose can be rotated and screwed into the insert in an extrapolated manner, the insert is formed integrally with the mating member. I can put it.

If it is difficult to rotate the hose and screw it into the insert in the form of extrapolation at the time of fastening the metal composite hose (assembly step), insert the insert separately from the mating member and It can be formed integrally with a fastener having an appropriate fastening structure corresponding to the mating member. In this case, after the insert is screwed into the end of the metal composite hose in an insert manner, the insert can be fastened to the mating member by the fastener.

(Function / Effect of Fifth Invention) When the insert of the fifth invention is used, as described above in the section "Function / Effect of the First Invention", the fastening portion between the metal composite hose and the mating member is changed. By caulking with a sleeve, it is possible to further improve the bonding strength and sealing performance of the fastening portion. At this time, since the metal composite hose is supported by the insert insert made of metal or hard resin, the hose is not crushed by the caulking pressure.

(Function / Effect of the Sixth Invention) By the hose fastening method of the sixth invention, the metal composite hose having the specific structure as in the first invention to the third invention can be easily and easily applied to various mating members. Good fastening can be achieved. Specific actions
The effects are as described in the columns of “Operation and Effect of First Invention” to “Operation and Effect of Third Invention”.

(Function / Effect of Seventh Invention) In addition to the function / effect of the sixth invention, the hose fastening method of the seventh invention provides
It is possible to further improve the bonding strength and sealing property of the fastening portion of the metal composite hose. More specifically, the functions and effects as described above in the section "Functions and effects of the fifth invention" are added.

(Operation / Effect of the Eighth Invention) In screwing the insert into the end of the metal composite hose, stainless steel is used for the metal corrugated spiral tube as in 3) of the eighth invention, and annealing is performed after the forming. If the molding distortion is removed by processing (ensure good elastic deformation capability), when the insert is pressed into the metal corrugated spiral tube with metal touch, it will not damage the metal corrugated spiral tube,
In addition, the fastening strength and the sealing property of the metal touch surface can be further improved.

In addition, the coating agent may be applied in advance to the inner periphery of the metal corrugated spiral tube and / or the outer periphery of the insert as in 4) of the eighth invention, or the fastening strength and the sealing property of the hose fastening portion may be improved. It is effective for improvement. If 3) and 4) of the eighth invention are performed at the same time, more preferable results are obtained.

[0035]

Next, embodiments of the first to eighth inventions will be described. In the following, simply "the present invention"
This means that the first to eighth inventions are collectively referred to.

[Metal Composite Hose] The metal composite hose according to the present invention has at least a metal corrugated helical tube constituting the inner layer of the hose and a concave / convex shape on the outer periphery of the metal corrugated helical tube so as to have a smooth outer peripheral shape. And a rubber layer or resin layer coated on the end of the hose. The “end of the hose” does not necessarily mean “the ends of the hose”, but may also mean “the end of one side of the hose”.

On the outer periphery of the rubber layer or the resin layer of the metal composite hose, a reinforcing layer (for example, a reinforcing thread layer or a wire blade layer), another resin layer, another metal layer or another rubber layer may be further provided. Can be formed in any order. That is, any one or two or more of these components can be formed in one or two or more layers, respectively, in any order.

It is more preferable that the metal corrugated spiral tube, the rubber layer or the resin layer covering the spiral tube, the reinforcing layer, and other layers such as the resin layer / metal layer / rubber layer are bonded to each other. The bonding means is not limited, and any known means such as vulcanization bonding, metal surface treatment, and use of an adhesive can be used.

The "other metal layer" may have a smooth cylindrical shape without irregularities, and may have the same shape as a metal corrugated spiral tube if there is no problem in the hose manufacturing process. The constituent material of the “other metal layer” may be the same as or different from the constituent material of the metal corrugated spiral tube.

The outermost layer of the metal composite hose may be the rubber layer of the first invention or any other component according to the second invention, but preferably has weather resistance, chemical resistance, Butyl rubber (IIR) with excellent ozone resistance, ethylene-
A rubber protector layer using propylene-diene rubber (EPDM), chloroprene rubber (CR), epichlorohydrin rubber (ECO), halogenated butyl rubber, or the like.

The metal composite hose according to the present invention is particularly preferably used for transporting various fluids (liquid or gas), and includes, for example, a fuel (gasoline) transport hose for automobiles, a filler hose, Hose for transporting hydrogen gas or methanol for fuel cell vehicles, gasoline, alcohol, hydrogen gas, natural gas, propane gas or other fuel hoses for household use, hoses for air conditioner refrigerants, air hoses for automobiles, cooler hoses, etc. Can be used for

[Metal Corrugated Spiral Tube] The inner layer of the metal composite hose according to the present invention is constituted by a corrugated spiral tube-shaped metal tube. What is corrugated spiral tube shape?
A bellows shape formed in a spiral. The type of metal material constituting the metal corrugated spiral tube is not limited,
Preferably, steel, alloy steel (including stainless steel), aluminum, aluminum alloy, copper, copper alloy, nickel or nickel alloy is used. Particularly, stainless steel is preferable.

The spiral pitch width, the depth of unevenness, the thickness of the metal layer, and the like in the metal corrugated spiral tube are not limited. Regarding the thickness of the metal layer, there is concern about the presence of pinholes.
A thickness less than m is less preferred. Generally, the thickness of the metal layer of the metal corrugated spiral tube should be 20 μm or more, especially 1 μm.
It is preferable that the thickness be about 50 μm to 300 μm.

As a method for manufacturing the metal corrugated spiral tube, any known method, for example, generally a continuous die molding method can be used. When the metal corrugated helical tube (particularly made of stainless steel) is screwed with a metal insert to be described later by metal touch, it is preferable to perform an annealing treatment in advance.

[Rubber Layer or Resin Layer] The rubber layer or the resin layer coated on the outer periphery of the metal corrugated spiral tube is formed so as to fill in the uneven shape of the metal corrugated spiral tube and to have a smooth outer peripheral shape. Things.

As a method for coating the rubber layer in the above-mentioned mode,
For example, a method of extruding rubber on a metal corrugated spiral tube instead of a mandrel, or after winding an unvulcanized rubber sheet around a metal corrugated spiral tube,
A method of filling the gap between the valleys of the metal corrugated spiral tube with rubber by applying an external pressure can be used. The constituent material of the rubber layer is not limited, but halogenated butyl rubber having excellent weather resistance, chemical resistance, ozone resistance, etc.
Propylene-diene rubber (EPDM), butyl rubber (I
IR), chloroprene rubber (CR), epichlorohydrin rubber (ECO) and the like can be preferably used.

As a method for coating the resin layer in the above embodiment,
For example, a method of extruding a resin on the outer peripheral surface using a metal corrugated spiral tube as a substitute for a mandrel, or repeating the film formation by dipping (immersing) the metal corrugated spiral tube into molten resin several times to cover the resin layer smoothly It is possible to use a method of saying that it is to be performed. Although the constituent material of the resin layer is not limited, PA6 (polyamide 6), PP (polypropylene), PE (polyethylene), and PA11 (polyamide 1) excellent in water absorption, extrudability, cost performance, etc.
1), PA12 (polyamide 12) and the like can be preferably used.

[Insert] The insert can be screwed into the inner peripheral portion of the metal corrugated spiral tube constituting the inner layer of the metal composite hose (more preferably, it can be screwed in a press-fit state).
It is a pipe body having a corrugated spiral outer peripheral shape. The insert is formed 1) integrally with a mating member to which the hose is to be fastened, or 2) integrally with a fastener having an appropriate fastening structure corresponding to the mating member.

The type of the mating member to which the hose is to be fastened is not limited, and examples thereof include the pipes and systems described above. When the insert is integrally formed with a fastener having an appropriate fastening structure corresponding to the mating member as in the above 1), the “fastener having an appropriate fastening structure” is screwed to the mating member. For example, a pipe-shaped male screw, female screw, bolting, or the like can be used. 3 to 8
Next, an example of fastening between the metal composite hose 1 and the mating member 9 via the fastener 6 is shown.

In FIG. 3, the fastener 6 on the metal composite hose 1 side is used.
The tip of the pipe-shaped male screw 10 and the mating member 9
Of the pipe 11 is metal-sealed using the tightening of the female screw 12. In FIG. 4, the male screw 10 of the fastener 6 on the metal composite hose 1 side is directly screwed into the screw hole 13 of the mating member 9 to perform metal sealing. In FIG. 5, the distal end of the pipe 14 of the fastener 6 on the metal composite hose 1 side and the distal end of the pipe-shaped male screw 15 of the mating member 9 are metal-sealed using the tightening of the female screw 16. I have. In FIG. 6, the fastener 6 on the metal composite hose 1 side is shown.
The O-ring 18 of the pipe groove of the pipe 17 is provided and inserted into the pipe 19 of the mating member 9 to seal the O-ring. In FIG. 7, the O-ring 18 of the pipe groove of the pipe 17 in the fastener 6 on the side of the metal composite hose 1 is shown.
Is provided, and inserted into the fluid transport hole 20 of the mating member 9 to seal the O-ring. In FIG. 8, an O-ring 23 provided around the fluid transport hole 22 of the counterpart member 9 at the distal end of the pipe 21 in the fastener 6 on the metal composite hose 1 side.
To seal the O-ring.

Although the material of the insert is not limited,
In order to obtain high fastening strength by press-fitting into a metal corrugated spiral tube, a hard material such as a metal or a hard resin is preferable. In particular, metal inserts made of steel, alloy steel (including stainless steel), aluminum, aluminum alloys, copper, copper alloys, nickel, nickel alloys, etc. are used for excellent fastening by metal touch with metal corrugated spiral tubes. It is preferable because strength and sealing properties can be obtained.

As in the fifth invention, the insert can be accompanied by a metal sleeve which can be extrapolated to the end of the hose on its outer periphery. In this case, the insert is preferably made of a hard material such as a metal or a hard resin. Although a specific example of the sleeve is shown in, for example, an embodiment described later, it is sufficient that the sleeve has a normal or known form of a hose tightening sleeve. That is, it is sufficient that the metal composite hose into which the insert is press-fitted has a configuration capable of caulking from the outer peripheral side.

[Hose fastening method] The hose fastening method according to the present invention is a method in which the above-mentioned insert is screwed into an end of a metal composite hose, thereby fastening the metal composite hose to a mating member or enabling the metal composite hose to be fastened. is there. More preferably,
In the hose fastening method according to the present invention, a metal composite hose is fastened to a mating member by screwing an insert into an end of the metal composite hose and externally crimping the sleeve to the hose. Alternatively, it is a method that enables fastening. The form of caulking is not limited. It may be caulked stepwise in a bale shape, but flat caulking is preferred to prevent the insert from rotating.

In such a hose fastening method, when the insert is screwed to the end of the metal composite hose, the following 3) and / or 4) means are applied to further improve the sealing performance of the hose fastening portion. Preferably.

3) The metal corrugated helical tube of the metal composite hose is made of stainless steel, and an annealing process is performed after forming the metal corrugated helical tube.

4) A coating agent for enhancing the joint strength of the threaded portion or for improving the sealing property of the threaded interface is previously applied to the inner periphery of the metal corrugated spiral tube and / or the outer periphery of the insert.

[0057]

[Embodiment 1 ] An embodiment of a metal composite hose and insert according to the present invention will be described with reference to FIG. In FIG. 1, a metal composite hose 1 has a metal corrugated spiral tube 2 constituting an inner layer thereof, and a rubber layer 3 coated so as to form a smooth outer peripheral shape by embedding irregularities on the outer periphery of the metal corrugated spiral tube. Until the end of the metal composite hose 1 is reached. The metal corrugated spiral tube 2 is
It is formed using stainless steel having a thickness of about 260 μm, and is subjected to an annealing treatment after being processed into a corrugated spiral tube shape. The rubber layer 3 is provided with a reinforcing yarn layer 4 in which reinforcing yarns are braided in an appropriate mode along a substantially central portion of the thickness thereof. Therefore, the rubber layer 3 has a substantially three-layer structure including the reinforcing yarn layers 4. .

On the other hand, the insert 5 which is a pipe
S304, a fastener 6 having an appropriate fastening structure corresponding to the mating member to which the metal composite hose 1 is to be fastened (a pipe-shaped male screw that can be screwed into the mating member, though not specifically shown) ) Are formed integrally. The outer periphery of the insert 5 is a metal corrugated spiral tube 2
It has a shape and a size that can be screwed into the inner peripheral portion of the device in a press-fitted state. The insert 5 has a metal (SUS304 or S45C) sleeve 7 that can be extrapolated to the end of the metal composite hose 1. The sleeve 7 has a shape provided with an inward flange 8 at one end of a cylindrical body, and the insert 5 is fitted with play into the sleeve 7 from the flange 8 side.

[ Embodiment 2 ] One embodiment of a hose fastening method according to the present invention will be described with reference to FIG. In FIG. 2, the insert 5 is screwed to the end of the metal composite hose 1. At the time of the screwing, the metal composite hose 1 can be screwed by turning the metal composite hose 1. However, if it is difficult to turn the metal composite hose 1 due to the hose fastening step, the insert 5 is turned to screw. Combine. At this time, the sleeve 7 is extrapolated to the end of the metal composite hose 1 with some play.

When the metal composite hose 1 and the insert 5 are screwed together, the insert 5 is pressed into the annealed metal corrugated helical tube 2 so that the interface between the two is firmly and strongly sealed with metal touch. I do.

Thereafter, by crimping the sleeve 7 from the outside of the metal composite hose 1, the end of the metal composite hose 1 is strongly fastened to the insert 5, so that the fastener 6 formed integrally with the insert 5 can easily be used. Can be fastened to the mating member. Since the outer layer of the metal composite hose 1 is the rubber layer 3 having a smooth outer peripheral shape, the fastening strength and the sealing performance of the fastening portion by swaging the sleeve 7 are extremely effectively improved.

[Brief description of the drawings]

FIG. 1 is a view showing a metal composite hose and an insert according to one embodiment of the present invention.

FIG. 2 is a view showing a method for fastening a metal composite hose according to one embodiment of the present invention.

FIG. 3 is a diagram showing an example of a fastening mode between an insert and a mating member.

FIG. 4 is a diagram illustrating an example of a fastening mode between an insert and a mating member.

FIG. 5 is a view showing an example of a fastening form between an insert and a mating member.

FIG. 6 is a view showing an example of a fastening mode between an insert and a mating member.

FIG. 7 is a diagram showing an example of a fastening mode between an insert and a mating member.

FIG. 8 is a view showing an example of a fastening form between an insert and a mating member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Metal composite hose 2 Metal corrugated spiral tube 3 Rubber layer 5 Insert 7 Sleeve 9 Mating member

Continuation of the front page F-term (reference) 3H017 BA01 3H111 AA02 BA02 BA03 BA04 BA05 BA12 BA15 BA24 CA42 CA52 CB02 CB03 CB04 CB05 CC03 CC13 CC18 CC20 DA26 DB08 DB11 EA04 4F100 AB01A AB01C AB01D AB01E AB02A AB04A AB10A01B01A AN00C AN00D AN00E AS00C AS00D AS00E BA02 BA03 BA04 BA05 BA07 BA10A BA10C BA10D BA10E DD15 DG11 GB32 JL02

Claims (8)

[Claims] 1. A hose comprising: a metal corrugated spiral tube constituting an inner layer of a hose; and a rubber layer or a resin layer coated so as to form a smooth outer peripheral shape by embedding irregularities on the outer periphery of the metal corrugated spiral tube. A metal composite hose characterized by being provided up to the end. 2. At least one component of a reinforcing layer, a resin layer, another metal layer or another rubber layer is formed in an arbitrary order on an outer periphery of the rubber layer or the resin layer, and a smooth layer is formed. The metal composite hose according to claim 1, wherein the metal composite hose is formed to have an outer peripheral shape. 3. The metal corrugated helical tube is made of steel, alloy steel (including stainless steel), aluminum, aluminum alloy, copper, copper alloy, nickel or nickel alloy. Or Claim 2
2. The metal composite hose according to item 1. 4. A pipe body having a corrugated spiral outer peripheral shape which can be screwed to an inner peripheral portion of the metal composite hose according to any one of claims 1 to 3, and the following 1) or 2 An insert characterized by comprising the configuration of (1). 1) The hose is formed integrally with the mating member to be fastened. 2) It is formed integrally with a fastener having an appropriate fastening structure corresponding to the mating member to which the hose is to be fastened. 5. The insert according to claim 4, wherein the insert is made of a metal or a hard resin, and has an outer periphery provided with a metal sleeve that can be extrapolated to an end of a hose. 6. The metal composite hose according to any one of claims 1 to 3, wherein the end according to claim 4 is screwed into an end of the metal composite hose, thereby fastening the metal composite hose to a mating member. A method for fastening a hose, wherein the hose can be fastened. 7. The metal composite hose according to any one of claims 1 to 3, wherein the insert according to claim 5 is screwed into an end of the metal composite hose, and the sleeve is extrapolated and swaged. A hose fastening method, wherein the metal composite hose is fastened to or fastened to a mating member by performing. 8. The method according to claim 1, wherein in the method of fastening the hose, an insert is screwed into an end of the metal composite hose to improve sealing performance by applying the following 3) and / or 4) means. The hose fastening method according to claim 6 or 7. 3) The metal corrugated helical tube of the metal composite hose is made of stainless steel, and is subjected to an annealing treatment after its molding, and a metal insert is press-fitted to the metal insert in a state of metal touch. 4) A coating agent is applied in advance to the inner periphery of the metal corrugated spiral tube and / or the outer periphery of the insert.