KR20230040408A - Fitting apparatus for high pressure hose - Google Patents

Abstract

The present invention relates to a fitting apparatus for a high-pressure hose, which comprises: a fluid supply unit for supplying fluid; a fluid delivery unit for transferring the fluid supplied through the fluid supply unit to a nozzle unit; a first fastening unit coupled to the fluid supply unit; a second fastening unit coupled to the fluid delivery unit and disposed spaced apart from the first fastening unit; and a fastening guide unit interlocks with the relative rotation of the first fastening unit and the second fastening unit and inserts the fluid delivery unit into the fluid supply unit.

Description

Fitting device for high pressure hose {FITTING APPARATUS FOR HIGH PRESSURE HOSE}

The present invention relates to a fitting device for a high-pressure hose, and more particularly, to a fitting device for a high-pressure hose for connecting an end of a high-pressure hose for a hydrogen filling station to a nozzle.

In general, as a low-emission vehicle to cope with recent environmental problems, a hydrogen fuel cell vehicle using gas fuel such as hydrogen gas is attracting attention, and in order to promote the spread of such a hydrogen fuel cell vehicle, A hydrogen filling station for recharging hydrogen stably and efficiently into a fuel tank is required. Accordingly, development of a high-pressure hose device for supplying hydrogen gas to a fuel cell vehicle from a dispenser installed at a hydrogen filling station is being actively pursued.

The high-pressure hose device for the hydrogen filling station is connected to a receptacle of a vehicle by a separate coupling or fitting device and is connected to a nozzle for injecting hydrogen. However, the conventional fitting device requires dedicated equipment for assembly and disassembly, so it is difficult to respond promptly in the field, and maintenance costs increase as the entire hose assembly must be replaced with a new product when an abnormality occurs.

On the other hand, the background art of the present invention is disclosed in Republic of Korea Patent Publication No. 10-2017-0139136 (published on December 18, 2017, title of the invention: Hose for hydrogen charging).

An object of the present invention is to provide a fitting device for a high-pressure hose that can be rapidly assembled and disassembled in the field without special equipment.

In order to solve the above problems, a fitting device for a high-pressure hose according to the present invention includes: a fluid supply unit for supplying fluid; a fluid delivery unit for delivering the fluid supplied through the fluid supply unit to a nozzle unit; a first fastening part coupled to the fluid supply part; a second fastening part coupled to the fluid transmission part and disposed to be spaced apart from the first fastening part; and a fastening guide part interlocked with the relative rotation of the first fastening part and the second fastening part to insert the fluid delivery part into the fluid supply part.

In addition, the fastening guide part is provided between the first fastening part and the second fastening part.

In addition, the fastening guide part may include a first fastening guide member extending from the first fastening part; a second fastening guide member extending from the second fastening portion and disposed to face the first fastening guide member; and a converter provided between the first fastening guide member and the second fastening guide member and converting relative rotation of the first fastening guide member and the second fastening guide member into linear movement.

In addition, the conversion unit may include a first conversion member protruding from the inner surface of the first fastening guide member; and a second conversion member protruding from an outer surface of the second fastening guide member and rotatably coupled to the first conversion member.

In addition, the first conversion member and the second conversion member are provided in the form of a screw thread and are screwed together.

In addition, a torsion prevention unit for preventing relative rotation of the fluid supply unit with respect to the first fastening unit; further includes.

In addition, the anti-torsion unit is in close contact with the outer surface of the fluid supply unit and the inner surface of the first fastening guide member by an elastic restoring force.

In addition, the fluid delivery unit may include an insertion unit inserted into the fluid supply unit; a fixing portion extending from the insertion portion and fixed to an inner surface of the fluid supply portion; and a flow prevention unit extending from the insertion unit and preventing the insertion unit from being relatively moved relative to the second fastening unit in a direction opposite to a direction in which the insertion unit is inserted into the fluid supply unit.

In addition, the fixing part, an entry guide part extending obliquely from the insertion part, and guiding the insertion part to be inserted into the fluid supply part; and a separation prevention unit extending from the entry guide unit toward the insertion unit and preventing the insertion unit from being separated from the fluid supply unit.

In addition, the flow prevention part is supported in contact with the stopper part provided in the second fastening part.

In the high-pressure hose device for a hydrogen filling station according to the present invention, the fluid delivery unit can be coupled to the fluid supply unit only by the relative rotation of the second fastening unit relative to the first fastening unit by the fastening guide unit, enabling quick assembly on site without separate dedicated equipment. do.

In addition, according to the fitting device for a high-pressure hose according to the present invention, since the first fastening part and the second fastening part are separated from each other, only the damaged part can be replaced when the hose is damaged, thereby reducing maintenance costs.

1 is an installation state diagram schematically showing an installation state of a fitting device for a high pressure hose according to an embodiment of the present invention.
2 is a cross-sectional view schematically showing the configuration of a fitting device for a high-pressure hose according to an embodiment of the present invention.
3 is an exploded cross-sectional view schematically showing the configuration of a fitting device for a high-pressure hose according to an embodiment of the present invention.
4 to 7 are diagrams schematically illustrating an assembly process of a fitting device for a high-pressure hose according to an embodiment of the present invention.

Hereinafter, an embodiment of a fitting device for a high pressure hose according to the present invention will be described with reference to the accompanying drawings.

In this process, the thickness of lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or operator. Therefore, definitions of these terms will have to be made based on the content throughout this specification.

In addition, in this specification, when a part is said to be “connected (or connected)” to another part, this is not only the case where it is “directly connected (or connected)”, but also “with another member in between” It also includes cases where it is indirectly connected (or connected). In this specification, when it is said that a certain part "includes (or includes)" a certain component, this does not exclude other components unless otherwise stated, but "includes (or includes)" other components. It means you can.

Also, like reference numerals may refer to like elements throughout this specification. Even if the same reference numerals or similar reference numerals are not mentioned or described in a particular drawing, the numerals may be described based on another drawing. In addition, even if there are parts not marked with reference numerals in specific drawings, the parts can be described based on other drawings. In addition, the number, shape, size, and relative difference of the detailed components included in the drawings of the present application are set for convenience of understanding, and may be implemented in various forms without limiting the embodiments.

1 is an installation state diagram schematically showing an installation state of a fitting device for a high pressure hose according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view schematically showing the configuration of a fitting device for a high pressure hose according to an embodiment of the present invention. 3 is an exploded cross-sectional view schematically showing the configuration of a fitting device for a high-pressure hose according to an embodiment of the present invention.

1 to 3, a fitting device 1 for a high pressure hose according to an embodiment of the present invention includes a fluid supply unit 100, a fluid delivery unit 200, a first fastening unit 300, and a second fastening unit. It includes a part 400, a fastening guide part 500, and a torsion prevention part 600.

The fluid supply unit 100 supplies fluid to a fluid delivery unit 200 to be described later. Here, the fluid may be exemplified as hydrogen gas. The fluid supply unit 100 according to an embodiment of the present invention may be formed to have the shape of a hose providing a fluid flow path therein. One end of the fluid supply unit 100 is connected to the dispenser 2 installed in the hydrogen filling station to receive fluid supply.

The fluid delivery unit 200 transfers the fluid supplied through the fluid supply unit 100 to the nozzle unit 3 that injects the fluid into the charging object 4 such as a hydrogen car. One side of the fluid delivery unit 200 is inserted into the fluid supply unit 100 by the operation of the fastening guide unit 500 to be described later, and is coupled with the fluid supply unit 100.

The fluid delivery unit 200 according to an embodiment of the present invention includes an insertion unit 210, a fixing unit 220, and a flow prevention unit 230.

The insertion part 210 forms a schematic appearance of the fluid delivery part 200 according to an embodiment of the present invention, and supports the fixing part 220 and the flow prevention part 230 to be described later. Insertion portion 210 according to an embodiment of the present invention may be formed to have a hollow cylindrical shape with an empty inside. The insertion part 210 is supported by a second fastening part 400 on one side (left side in the drawing), and is inserted into the fluid supply part 100 by the fastening guide part 500. One side of the insertion unit 210 may be fixed inside the fluid supply unit 100 by a fixing unit 220 to be described later. The other side (right side of the drawing) of the insertion part 210 is formed to be detachably coupled to the nozzle part 3 by screwing, fitting, or the like.

The fixing part 220 extends from the insertion part 210 and is provided to be fixed to the inner surface of the fluid supply part 100 as the insertion part 210 is inserted into the fluid supply part 100 . The fixing part 220 is disposed on one side of the insertion part 210 inserted into the fluid supply part 100. Accordingly, the fixing part 220 is inserted into the fluid supply part 100 together with the insertion part 210 when the insertion part 210 is inserted. The fixing part 220 is disposed to face the inner surface of the second fastening part 400 to be described later.

The fixing part 220 according to an embodiment of the present invention includes an entry guide part 221 and a departure prevention part 222.

The entry guide part 221 forms the appearance of one side of the fixing part 220 according to an embodiment of the present invention, and guides the insertion part 210 being inserted into the fluid supply part 100. The entry guide part 221 according to an embodiment of the present invention extends from the outer surface of the insertion part 210 at a predetermined angle along the longitudinal direction of the insertion part 210 . More specifically, the entrance guide portion 221 is formed to gradually increase in height from one side (left side in FIG. 2) to the other side (right side in FIG. 2) of the insertion portion 210. Accordingly, when the entry guide unit 221 inserts the insertion unit 210 into the fluid supply unit 100, the inner surface of the fluid supply unit 100 is compressed by an inclined surface or the inner diameter of the fluid supply unit 100 is changed. Smooth insertion of the insertion part 210 can be induced by expanding it to a certain size. The entry guide part 221 may extend along the circumferential direction of the insertion part 210 to form a closed curve. Alternatively, it is also possible that the entry guide part 221 is provided in plural and arranged at a predetermined interval along the circumferential direction of the insertion part 210 . The entry guide part 221 may be arranged in a plurality of columns along the longitudinal direction of the insertion part 210 . In this case, the number and spacing of the plurality of rows of the entry guide part 221 can be variously changed within the range of the length of the insertion part 210 inserted into the fluid supply part 100.

The separation preventing part 222 forms the other side of the fixing part 220 according to an embodiment of the present invention, and prevents the insertion part 210 from being separated from the inside of the fluid supply part 100 in the direction opposite to insertion. . The departure prevention unit 222 according to an embodiment of the present invention may be formed to have a stepped shape extending from the end of the entry guide unit 221 toward the outer surface of the insertion unit 210 . Accordingly, when the insertion part 210 is completely inserted into the fluid supply part 100, the separation prevention part 222 is in close contact with the inner surface of the fluid supply part 100, and the insertion part 210 becomes the fluid supply part according to the engagement. It is possible to prevent deviation from insertion in the opposite direction from (100). The departure prevention unit 222 may be provided in plurality and extend individually from the plurality of entry guide units 221 .

The flow prevention part 230 extends from the insertion part 210 and is disposed to come into contact with the second fastening part 400 to be described later. The flow prevention part 230 prevents the insertion part 210 from moving relative to the second fastening part 400 in the opposite direction to the direction in which the insertion part 210 is inserted into the fluid supply part 100 . The flow prevention part 230 receives the moving force of the second fastening part 400 in the linear direction by the operation of the fastening guide part 500 from the second fastening part 400 . The flow prevention part 230 according to an embodiment of the present invention may be formed to have a flange shape protruding outward in a radial direction of the insertion part 210 from an outer surface of the insertion part 210 . As the insertion part 210 is completely inserted into the fluid supply part 100, the flow prevention part 230 is supported by one side (the left surface in reference to FIG. 2) in contact with the end surface of the fluid supply part 100. The flow prevention part 230 is supported in contact with the inner surface of the stopper part 410 provided in the second fastening part 400 to be described later on the other side (right side in FIG. 2).

The first fastening part 300 is coupled to the fluid supply part 100 and supports one side of the fastening guide part 500 to be described later. The first fastening part 300 according to an embodiment of the present invention may be formed to have a hollow cylinder shape with openings on both sides. The first fastening part 300 may be formed to have a polygonal cross-sectional shape so that it can be smoothly fastened with a working tool such as a spanner or wrench. The inner diameter of the first fastening part 300 may correspond to or be larger than the diameter of the fluid supply part 100 so that the fluid supply part 100 can be smoothly inserted into the inside.

The second fastening part 400 is coupled to the fluid delivery part 200 and supports the other side of the fastening guide part 500 to be described later. The second fastening part 400 is disposed to be spaced apart from the first fastening part 300 . When the second fastening part 400 rotates relative to the first fastening part 300, it moves towards the first fastening part 300 by the fastening guide part 500 described below or moves away from the first fastening part 300. is moved in the direction The second fastening part 400 according to an embodiment of the present invention may be formed to have a hollow cylindrical shape with an empty inside. The second fastening part 400 may be formed to have a polygonal cross-sectional shape so that it can be smoothly fastened with a working tool such as a spanner or wrench. The inner diameter of the second fastening part 400 may correspond to or be larger than the diameter of the fluid supply part 100 so that, more specifically, the insertion part 210 may be smoothly inserted into the fluid delivery part 200 . The second fastening part 400 may be relatively rotatably installed with respect to the insertion part 210 . Accordingly, when the second fastening part 400 rotates, the fluid transmission part 200 does not rotate together with the second fastening part 400 and can be inserted into the fluid supply part 100, so that the second fastening part 400 ) It is possible to prevent twisting and twisting of the fluid supply unit 100 due to the rotational force.

A stopper part 410 supporting the flow prevention part 230 may be provided in the second fastening part 400 . The stopper part 410 according to an embodiment of the present invention protrudes from one end of the second fastening part 400 (right end in FIG. 2 ) toward the inside of the second fastening part 400 in the radial direction. The stopper part 410 extends along the circumferential direction of the second fastening part 400 to form a closed curve. As the insertion part 410 is completely inserted into the second fastening part 400, the inner surface of the stopper part 410 (left side in FIG. 2) is one side of the flow prevention part 230 (right side in FIG. 2). ) is contacted. Accordingly, the stopper part 410 can prevent the insertion part 210 from being separated from the second fastening part 400 . In addition, when the second fastening part 400 is moved toward the first fastening part 300, the stopper part 410 transmits the moving force of the second fastening part 400 to the flow prevention part 230 to transfer fluid The unit 200 may be induced to be inserted into the fluid supply unit 100.

The fastening guide part 500 is provided between the first fastening part 300 and the second fastening part 400, and interlocks with the relative rotation of the first fastening part 300 and the second fastening part 400, so that the fluid The delivery unit 200 is inserted into the fluid supply unit 100.

The fastening guide part 500 according to an embodiment of the present invention includes a first fastening guide member 510, a second fastening guide member 520, and a conversion unit 530.

The first fastening guide member 510 extends from the first fastening part 300 to form one side appearance of the fastening guide part 500 according to an embodiment of the present invention. The first fastening guide member 510 according to an embodiment of the present invention extends horizontally along the longitudinal direction of the first fastening part 300 from the end of one side (right side in FIG. 3) of the first fastening part 300. . The first fastening guide member 510 extends along the circumferential direction of the first fastening part 300 to form a closed curve. The outer surface of the first fastening guide member 510 is disposed on the same plane as the outer surface of the first fastening part 300 . The thickness of the first fastening guide member 510 is smaller than the thickness of the first fastening part 300 . The first fastening guide member 510 is disposed so that the inner circumferential surface faces the outer circumferential surface of the fluid supply unit 100 at a predetermined interval. Accordingly, a space can be provided between the first fastening guide member 510 and the fluid supply unit 100 in which a second fastening guide member 520 to be described later can be located.

The second fastening guide member 520 extends from the second fastening part 400 to form the other outer appearance of the fastening guide part 500 according to an embodiment of the present invention. The second fastening guide member 520 according to an embodiment of the present invention extends horizontally along the longitudinal direction of the second fastening part 400 from one side (left side in FIG. 3) end of the second fastening part 400. . The second fastening guide member 520 extends along the circumferential direction of the second fastening part 400 to form a closed curve. The outer surface of the second fastening guide member 520 is disposed on the same plane as the inner surface of the second fastening part 400 . The thickness of the second fastening guide member 520 is smaller than the thickness of the second fastening part 400 . The second fastening guide member 520 is disposed so that the inner surface faces the outer surface of the fluid delivery unit 200 at a predetermined interval. The second fastening guide member 520 is inserted into the space formed between the first fastening guide member 510 and the fluid supply unit 100 by the operation of the converter 530 to be described later. In this case, the outer surface of the second fastening guide member 520 is spaced apart from the inner surface of the first fastening guide member 510 by a predetermined distance and faces each other.

The conversion unit 530 is provided between the first fastening guide member 510 and the second fastening guide member 520, and controls the relative rotation of the first fastening guide member 510 and the second fastening guide member 520. Convert to linear movement.

The conversion unit 530 according to an embodiment of the present invention includes a first conversion member 531 and a second conversion member 532 .

The first conversion member 531 protrudes from the inner surface of the first fastening guide member 510 . The first conversion member 531 according to an embodiment of the present invention protrudes from the inner surface of the first fastening guide member 510 to the inside in the radial direction of the first fastening guide member 510, and the first fastening guide member ( 510) may be formed to have a screw thread extending in a spiral shape along the longitudinal direction.

The second conversion member 532 protrudes from the outer surface of the second fastening guide member 520 and is rotatably coupled to the first conversion member 531 . The second conversion member 532 protrudes outward in the radial direction of the second fastening guide member 520 from the outer surface of the second fastening guide member 520, and spirals along the longitudinal direction of the second fastening guide member 520. It may be formed to have a shape of a screw thread extending in the form. The second conversion member 532 rotates relative to the first conversion member 531 when the second fastening part 400 rotates, and is screwed to the first conversion member 531 . Accordingly, the second conversion member 532 converts the relative rotational motion of the first fastening part 300 and the second fastening part 400 into a linear motion of the second fastening part 400 with respect to the first fastening part 300. By converting, the fluid delivery unit 200 may be induced to be inserted into the fluid supply unit 100.

The anti-torsion part 600 is provided between the fluid supply part 100 and the first fastening guide member 510, and prevents the fluid supply part 100 from rotating relative to the first fastening part 300. Accordingly, the anti-twist part 600 prevents twisting and twisting of the fluid supply part 100 due to the rotational force of the second fastening part 400 while the fluid delivery part 200 is inserted into the fluid supply part 100. can do. The anti-torsion part 600 according to an embodiment of the present invention is formed to have a circular ring shape and is inserted into an empty space formed between the fluid supply part 100 and the first fastening guide member 510. One side of the anti-torsion part 600 is disposed to be in contact with the end surface of the first fastening part 300 . The anti-torsion unit 600 is made of a material having elastic restoring force, such as rubber or silicon. The inner and outer surfaces of the anti-torsion part 600 are in close contact with the outer surface of the fluid supply unit 100 and the inner surface of the first fastening guide member 510, respectively, by its own elastic restoring force. Accordingly, the anti-torsion part 600 can prevent lifting due to the play between the fluid supply part 100 and the first fastening part 300, and the relative rotation of the fluid supply part 100 with respect to the first fastening part 300. can prevent

Hereinafter, an assembly process of the fitting device 1 for a high-pressure hose according to an embodiment of the present invention will be described in detail.

4 to 7 are diagrams schematically illustrating an assembly process of a fitting device for a high-pressure hose according to an embodiment of the present invention.

Referring to FIGS. 4 to 7 , the fluid supply unit 100 is inserted into the first fastening unit 300 .

As both sides of the first fastening part 300 are formed to be open, the end of the fluid supply part 100 is disposed to protrude a predetermined distance to one side of the first fastening part 300 (right side of FIG. 4 ).

The anti-torsion part 600 is inserted into an empty space formed between the fluid supply part 100 and the first fastening guide member 510.

The anti-torsion part 600 is inserted to a position where one side comes into contact with the end surface of the first fastening part 300 .

The inner and outer surfaces of the anti-torsion part 600 are in close contact with the outer surface of the fluid supply unit 100 and the inner surface of the first fastening guide member 510, respectively, by its own elastic restoring force.

The fluid transmission part 200 is inserted into the second fastening part 400 .

More specifically, the insertion part 210 is inserted into one side (left side of FIG. 5 ) of the second fastening part 400 where the stopper part 410 is not formed.

As the insertion part 210 is inserted into the second fastening part 400 by a predetermined distance or more, one side surface of the flow prevention part 230 (right side in FIG. the reference left side).

Then, the end surface of the insertion part 210 on which the fixing part 220 is formed faces the end surface of the fluid supply part 100 coaxially.

At the same time, the inner surface end of the first fastening guide member 510 and the outer surface end of the second fastening guide member 520 are also arranged to face each other in the radial direction of the fluid supply unit 100, and the second conversion member 532 The end is engaged with the end of the first conversion member 531 .

As the second fastening part 400 rotates relative to the first fastening part 300, the second fastening guide member 520 also rotates relative to the first fastening guide member 510, and the second conversion member 532 ) is screwed to the first conversion member 531. In this case, the second fastening part 400 may be relatively rotated with respect to the fluid delivery part 200 .

The second conversion member 532 is screwed to the first conversion member 531 and linearly moves the second fastening part 400 toward the first fastening part 300 .

The flow prevention part 230 in contact with the stopper part 410 is interlocked with the movement of the second fastening part 400 to move the insertion part 210 together with the second fastening part 400 .

One end (left end of FIG. 6 ) of the insertion part 210 is inserted into the fluid supply part 100 .

The entry guide part 221 induces smooth insertion of the insertion part 210 by compressing the inner surface of the fluid supply part 100 by an inclined surface or by expanding the inner diameter of the fluid supply part 100 to a certain size.

When the insertion unit 210 is completely inserted into the fluid supply unit 100, the separation prevention unit 222 adheres to the inner surface of the fluid supply unit 100 and engages with the inner surface of the fluid supply unit 100. .

During this process, the fluid supply unit 100 may be maintained without being rotated relative to the first fastening unit 300 as it adheres to the anti-torsion unit 600 .

As the fluid delivery unit 200 is completely inserted into the fluid supply unit 100, the end surface of the second fastening guide member 520 comes into contact with the other side of the twist prevention unit 600, and the flow prevention unit 230 ) The other side of the assembly is also completed according to the end surface of the fluid supply unit 100.

The present invention has been described with reference to the embodiments shown in the drawings, but this is merely exemplary, and those skilled in the art to which the technology belongs can make various modifications and equivalent other embodiments. will understand

Therefore, the true technical protection scope of the present invention should be determined by the claims below.

1: Fitting device for high-pressure hose 2: Dispenser
3: Nozzle part 4: Filling object
100: fluid supply unit 200: fluid delivery unit
210: insertion part 220: fixing part
221: entry guide unit 300: first fastening unit
400: second fastening part 410: stopper part
500: fastening guide part 510: first fastening guide member
520: second fastening guide member 530: conversion unit
531: first conversion member 532: second conversion member
600: anti-torsion part

Claims (10)

a fluid supply unit supplying fluid;
a fluid delivery unit transferring the fluid supplied through the fluid supply unit to the nozzle unit;
A first fastening part coupled to the fluid supply part;
a second fastening part coupled to the fluid transmission part and disposed to be spaced apart from the first fastening part;
A fitting device for a high-pressure hose comprising: a fastening guide part interlocked with the relative rotation of the first fastening part and the second fastening part to insert the fluid delivery part into the fluid supply part.
According to claim 1,
The fastening guide portion fitting device for a high-pressure hose, characterized in that provided between the first fastening portion and the second fastening portion.
According to claim 1,
The fastening guide part,
a first fastening guide member extending from the first fastening part;
a second fastening guide member extending from the second fastening portion and disposed to face the first fastening guide member; and
And a converting unit provided between the first fastening guide member and the second fastening guide member and converting relative rotation of the first fastening guide member and the second fastening guide member into linear movement. Fitting device for high-pressure hoses that
According to claim 3,
The conversion unit,
a first conversion member protruding from an inner surface of the first fastening guide member; and
A fitting device for a high-pressure hose comprising a; second conversion member protruding from the outer surface of the second fastening guide member and rotatably coupled to the first conversion member.
According to claim 4,
The first conversion member and the second conversion member are provided in the form of a screw thread fitting device for a high pressure hose, characterized in that screwed.
According to claim 3,
The fitting device for a high-pressure hose, characterized in that it further comprises a; torsion preventing portion for preventing relative rotation of the fluid supply portion with respect to the first fastening portion.
According to claim 6,
The anti-torsion unit fitting device for a high-pressure hose, characterized in that in close contact with the outer surface of the fluid supply unit and the inner surface of the first fastening guide member by an elastic restoring force.
According to claim 1,
The fluid delivery unit,
an insertion unit inserted into the fluid supply unit;
a fixing portion extending from the insertion portion and fixed to an inner surface of the fluid supply portion; and
A fitting device for a high-pressure hose comprising a; flow prevention part extending from the insertion part and preventing the insertion part from moving relative to the second fastening part in a direction opposite to the direction in which the insertion part is inserted into the fluid supply part. .
According to claim 8,
The fixing part,
an entry guide part extending obliquely from the insertion part and guiding insertion of the insertion part into the fluid supply part; and
A fitting device for a high-pressure hose comprising a; detachment prevention part extending from the entry guide toward the insertion part and preventing the insertion part from being separated from the fluid supply part.
According to claim 8,
The flow prevention part is a fitting device for a high-pressure hose, characterized in that supported in contact with the stopper part provided in the second fastening part.

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