Fitting apparatus for high pressure hose

Abstract

The present invention relates to a fitting device for a high-pressure hose, characterized by comprising a fluid supply unit for supplying fluid, a fluid transfer 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 transfer unit and spaced apart from the first fastening unit, and a fastening guide unit that inserts the fluid transfer unit into the interior of the fluid supply unit in conjunction with the relative rotation of the first fastening unit and the second fastening unit.

Description

Technology Field

[0001] The present invention relates to a fitting device for a high-pressure hose, and more specifically, to a fitting device for a high-pressure hose for connecting the end of a high-pressure hose for a hydrogen refueling station to a nozzle. Background Technology

[0003] In general, hydrogen fuel cell vehicles using gaseous fuels such as hydrogen gas are attracting attention as low-emission vehicles to address recent environmental issues, and hydrogen refueling stations are required to reliably and efficiently refuel fuel tanks mounted on vehicles in order to promote the widespread adoption of such hydrogen fuel cell vehicles. Accordingly, active development is underway for high-pressure hose devices that supply hydrogen gas to fuel cell vehicles from dispensers installed at hydrogen refueling stations.

[0004] These high-pressure hose devices for hydrogen refueling stations are connected to the vehicle's receptacle via a separate coupling or fitting device and connected to a nozzle that injects hydrogen. However, conventional fitting devices require specialized equipment for assembly and disassembly, making it difficult to respond quickly on-site, and there is a problem of increased maintenance costs as the entire hose assembly must be replaced with a new one in the event of a malfunction.

[0005] Meanwhile, the background technology of the present invention is disclosed in Korean Published Patent Application No. 10-2017-0139136 (published Dec. 18, 2017, Title of Invention: Hydrogen Charging Hose). The problem to be solved

[0007] The purpose of the present invention is to provide a fitting device for a high-pressure hose that can be quickly assembled and disassembled on-site without the need for dedicated equipment. means of solving the problem

[0009] To solve the above-mentioned problem, a fitting device for a high-pressure hose according to the present invention comprises: 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 unit coupled to the fluid supply unit; a second fastening unit coupled to the fluid delivery unit and spaced apart from the first fastening unit; and a fastening guide unit that inserts the fluid delivery unit into the interior of the fluid supply unit in conjunction with the relative rotation of the first fastening unit and the second fastening unit.

[0010] In addition, the above-mentioned fastening guide is provided between the first fastening part and the second fastening part.

[0011] Additionally, the fastening guide member comprises: a first fastening guide member extending from the first fastening member; a second fastening guide member extending from the second fastening member and positioned facing the first fastening guide member; and a conversion member provided between the first fastening guide member and the second fastening guide member, which converts the relative rotation of the first fastening guide member and the second fastening guide member into linear movement.

[0012] Additionally, the conversion unit comprises: a first conversion member protruding from the inner surface of the first fastening guide member; and a second conversion member protruding from the outer surface of the second fastening guide member and rotatably coupled to the first conversion member.

[0013] In addition, the first conversion member and the second conversion member are provided in the form of screw threads and are screw-coupled.

[0014] In addition, it further includes a torsion prevention part that prevents relative rotation of the fluid supply part with respect to the first fastening part.

[0015] In addition, the above-mentioned anti-torsion part is in close contact with the outer surface of the fluid supply part and the inner surface of the first fastening guide member by means of elastic restoring force.

[0016] Additionally, the fluid transfer unit comprises: an insertion part inserted into the interior of the fluid supply unit; a fixing part extending from the insertion part and fixed to the inner surface of the fluid supply unit; and a flow prevention part extending from the insertion part and preventing relative movement with respect to the second fastening part in a direction opposite to the direction in which the insertion part is inserted into the fluid supply unit.

[0017] Additionally, the fixed portion includes: an entry guide portion that extends obliquely from the insert portion and guides the insert portion to be inserted into the interior of the fluid supply portion; and an escape prevention portion that extends from the entry guide portion toward the insert portion and prevents the insert portion from being separated from the fluid supply portion.

[0018] In addition, the above-mentioned flow prevention part is supported by contacting the stopper part provided in the second fastening part. Effects of the invention

[0020] The high-pressure hose device for a hydrogen refueling station according to the present invention allows the fluid transfer part to be connected to the fluid supply part solely by the relative rotation of the second connecting part with respect to the first connecting part by means of the connecting guide part, thereby enabling rapid assembly on-site without the need for separate dedicated equipment.

[0021] In addition, since the first connecting part and the second connecting part of the high-pressure hose fitting device according to the present invention are separated from each other, only the damaged part can be replaced when damage occurs to the hose, thereby reducing maintenance costs. Brief explanation of the drawing

[0023] FIG. 1 is an installation diagram schematically showing the installation state of a fitting device for a high-pressure hose according to one embodiment of the present invention. FIG. 2 is a cross-sectional view schematically showing the configuration of a fitting device for a high-pressure hose according to one embodiment of the present invention. FIG. 3 is an exploded cross-sectional view schematically showing the configuration of a fitting device for a high-pressure hose according to one embodiment of the present invention. FIGS. 4 to 7 are schematic drawings illustrating the assembly process of a fitting device for a high-pressure hose according to one embodiment of the present invention. Specific details for implementing the invention

[0024] Hereinafter, an embodiment of a fitting device for a high-pressure hose according to the present invention will be described with reference to the attached drawings.

[0025] In this process, the thickness of lines or the size of components depicted in the drawings may be exaggerated for the sake of clarity and convenience of explanation. Furthermore, the terms described below are defined in consideration of their functions within the present invention, and these definitions may vary depending on the intent or convention of the user or operator. Therefore, the definitions of these terms should be based on the content throughout this specification.

[0026] Furthermore, in this specification, when a part is described as being "connected (or joined)" to another part, this includes not only cases where they are "directly connected (or joined)" but also cases where they are "indirectly connected (or joined)" with other members interposed between them. In this specification, when a part is described as "including (or having) a certain component," this means that, unless specifically stated otherwise, it does not exclude other components but may additionally "include (or have)" other components.

[0027] Furthermore, throughout this specification, the same reference numerals may refer to the same components. Even if the same or similar reference numerals are not mentioned or described in a specific drawing, they may be described based on other drawings. Additionally, even if a part is not indicated by a reference numeral in a specific drawing, that part may be described based on other drawings. Furthermore, the number, shape, size, and relative differences in size of the detailed components included in the drawings of this application are set for ease of understanding and do not limit the embodiments, and may be implemented in various forms.

[0028] FIG. 1 is an installation state diagram schematically showing the installation state of a high-pressure hose fitting device according to one embodiment of the present invention, FIG. 2 is a cross-sectional view schematically showing the configuration of a high-pressure hose fitting device according to one embodiment of the present invention, and FIG. 3 is an exploded cross-sectional view schematically showing the configuration of a high-pressure hose fitting device according to one embodiment of the present invention.

[0029] Referring to FIGS. 1 to 3, a fitting device (1) for a high-pressure hose according to one embodiment of the present invention includes a fluid supply unit (100), a fluid transfer unit (200), a first fastening unit (300), a second fastening unit (400), a fastening guide unit (500), and a twist prevention unit (600).

[0030] The fluid supply unit (100) supplies fluid to the fluid delivery unit (200) described later. Here, the fluid may be exemplified as hydrogen gas. The fluid supply unit (100) according to one embodiment of the present invention may be formed to have the shape of a hose that provides a fluid flow path inside. One end of the fluid supply unit (100) is connected to a dispenser (2), etc., installed at a hydrogen refueling station to receive fluid.

[0031] The fluid transfer unit (200) transfers the fluid supplied through the fluid supply unit (100) to a nozzle unit (3) that injects the fluid into a charging target (4), such as a hydrogen vehicle. One side of the fluid transfer unit (200) is inserted into the interior of the fluid supply unit (100) by the operation of the connecting guide unit (500) described later, and is coupled with the fluid supply unit (100).

[0032] A fluid transfer unit (200) according to one embodiment of the present invention includes an insertion unit (210), a fixing unit (220), and a flow prevention unit (230).

[0033] The insertion part (210) forms the general external shape of the fluid transfer part (200) according to one embodiment of the present invention and supports the fixing part (220) and the flow prevention part (230) described later. The insertion part (210) according to one embodiment of the present invention may be formed to have a hollow cylindrical shape with an empty interior. One side of the insertion part (210) (left side in the figure) is supported by the second fastening part (400) described later and is inserted into the interior of the fluid supply part (100) by the fastening guide part (500). One side of the insertion part (210) may be fixed inside the fluid supply part (100) by the fixing part (220) described later. The other side of the insertion part (210) (right side in the figure) is formed so that it can be detachably coupled to the nozzle part (3) by screw coupling, snap coupling, etc.

[0034] 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 interior of the fluid supply part (100). The fixing part (220) is positioned on one side of the insertion part (210) that is inserted into the interior of the fluid supply part (100). Accordingly, the fixing part (220) is inserted into the interior of the fluid supply part (100) together with the insertion part (210) when the insertion part (210) is inserted. The fixing part (220) is positioned to face the inner surface of the second fastening part (400) described later.

[0035] A fixing part (220) according to one embodiment of the present invention includes an entry guide part (221) and a detachment prevention part (222).

[0036] The entry guide (221) forms the outer surface of one side of the fixing part (220) according to one embodiment of the present invention and guides the insertion part (210) to be inserted into the interior of the fluid supply part (100). The entry guide (221) according to one embodiment of the present invention extends at a predetermined angle along the longitudinal direction of the insertion part (210) from the outer surface of the insertion part (210). More specifically, the entry guide (221) is formed such that its height gradually increases as it moves from one side (left side in FIG. 2) to the other side (right side in FIG. 2) of the insertion part (210). Accordingly, when the insertion part (210) is inserted into the interior of the fluid supply part (100), the entry guide (221) can induce smooth insertion of the insertion part (210) by compressing the inner surface of the fluid supply part (100) by the inclined surface or by expanding the inner diameter of the fluid supply part (100) to a certain size. The entry guide section (221) may be extended to form a closed curve along the circumferential direction of the insertion section (210). Alternatively, the entry guide section (221) may be provided in multiple units and arranged at predetermined intervals along the circumferential direction of the insertion section (210). The entry guide section (221) may be arranged in multiple rows along the length direction of the insertion section (210). In this case, the number and spacing of the multiple rows of the entry guide section (221) may be varied within the range of the length of the insertion section (210) inserted into the fluid supply section (100).

[0037] The anti-detachment member (222) forms the outer surface of the other side of the fixing member (220) according to one embodiment of the present invention and prevents the insertion member (210) from detaching in the opposite direction of insertion from inside the fluid supply member (100). The anti-detachment member (222) according to one embodiment of the present invention may be formed to have a stepped shape extending from the end of the entry guide member (221) toward the outer surface of the insertion member (210). Accordingly, when the insertion member (210) is completely inserted into the interior of the fluid supply member (100), the anti-detachment member (222) is in close contact with the inner surface of the fluid supply member (100) and interlocks, thereby preventing the insertion member (210) from detaching from the fluid supply member (100) in the opposite direction of insertion. The anti-detachment member (222) may be provided in multiple numbers and may extend individually from each of the multiple entry guide members (221).

[0038] The flow prevention member (230) extends from the insertion member (210) and is positioned to be in contact with the second fastening member (400) described later. The flow prevention member (230) prevents the insertion member (210) from moving relative to the second fastening member (400) in a direction opposite to the direction in which it is inserted into the fluid supply member (100). The flow prevention member (230) receives a linear movement force of the second fastening member (400) from the second fastening member (400) due to the operation of the fastening guide member (500). According to one embodiment of the present invention, the flow prevention member (230) may be formed to have a flange shape that protrudes radially outward from the outer surface of the insertion member (210). As the insertion part (210) is fully inserted into the interior of the fluid supply part (100), one side (left side based on FIG. 2) of the flow prevention part (230) is supported by contacting the end surface of the fluid supply part (100). The other side (right side based on FIG. 2) of the flow prevention part (230) is supported by contacting the inner surface of the stopper part (410) provided in the second fastening part (400) described later.

[0039] The first fastening part (300) is coupled to the fluid supply part (100) and supports one side of the fastening guide part (500) described later. The first fastening part (300) according to one embodiment of the present invention may be formed to have a hollow tube shape with both sides open. The first fastening part (300) may be formed to have a polygonal cross-sectional shape so that fastening with a work tool such as a spanner or wrench can be smoothly performed. The inner diameter of the first fastening part (300) may be formed to 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 interior.

[0040] The second fastening part (400) is coupled to the fluid transfer part (200) and supports the other side of the fastening guide part (500) described later. The second fastening part (400) is spaced apart from the first fastening part (300). When the second fastening part (400) rotates relative to the first fastening part (300), it is moved toward the first fastening part (300) or moved away from the first fastening part (300) by the fastening guide part (500) described later. The second fastening part (400) according to one embodiment of the present invention may be formed to have a hollow cylindrical shape with an empty interior. The second fastening part (400) may be formed to have a polygonal cross-sectional shape so that fastening with a work tool such as a spanner or wrench can be performed smoothly. The inner diameter of the second fastening part (400) may be formed to correspond to or be larger than the diameter of the fluid supply part (100) so that the insertion part (210), specifically the fluid transfer part (200), can be smoothly inserted into the interior. The second fastening part (400) may be installed to be rotatable relative to the insertion part (210). Accordingly, when the second fastening part (400) rotates, the fluid transfer part (200) does not rotate together with the second fastening part (400) and can be inserted into the interior of the fluid supply part (100), thereby preventing twisting and warping of the fluid supply part (100) caused by the rotational force of the second fastening part (400).

[0041] The second fastening part (400) may be provided with a stopper part (410) that supports the flow prevention part (230). According to one embodiment of the present invention, the stopper part (410) protrudes radially inward from one end (right end in Fig. 2) of the second fastening part (400). The stopper part (410) extends to form a closed curve along the circumferential direction of the second fastening part (400). As the insertion part (410) is completely inserted into the interior of the second fastening part (400), the inner surface (left side in Fig. 2) of the stopper part (410) comes into contact with one side (right side in Fig. 2) of the flow prevention part (230). Accordingly, the stopper part (410) can prevent the insertion part (210) from detaching from the second fastening part (400). Additionally, the stopper part (410) can transmit the movement force of the second fastening part (400) to the flow prevention part (230) when the second fastening part (400) moves toward the first fastening part (300), thereby inducing the fluid transfer part (200) to be inserted into the interior of the fluid supply part (100).

[0042] The fastening guide section (500) is provided between the first fastening section (300) and the second fastening section (400), and is linked to the relative rotation of the first fastening section (300) and the second fastening section (400) to insert the fluid transfer section (200) into the interior of the fluid supply section (100).

[0043] A fastening guide portion (500) according to one embodiment of the present invention includes a first fastening guide member (510), a second fastening guide member (520), and a conversion portion (530).

[0044] The first fastening guide member (510) extends from the first fastening part (300) to form the outer surface of one side of the fastening guide part (500) according to one embodiment of the present invention. The first fastening guide member (510) according to one embodiment of the present invention extends horizontally along the length direction of the first fastening part (300) from the end of one side (right side according to FIG. 3) of the first fastening part (300). The first fastening guide member (510) extends to form a closed curve along the circumferential direction of the first fastening part (300). The outer surface of the first fastening guide member (510) is positioned on the same plane as the outer surface of the first fastening part (300). The thickness of the first fastening guide member (510) is formed to be smaller than the thickness of the first fastening part (300). The first fastening guide member (510) is positioned so that its inner surface faces the outer surface of the fluid supply unit (100) at a predetermined distance. Accordingly, the first fastening guide member (510) can provide a space between itself and the fluid supply unit (100) where the second fastening guide member (520), which will be described later, can be positioned.

[0045] The second fastening guide member (520) extends from the second fastening part (400) to form the outer surface of the other side of the fastening guide part (500) according to one embodiment of the present invention. The second fastening guide member (520) according to one embodiment of the present invention extends horizontally along the length direction of the second fastening part (400) from one end (left side in FIG. 3) of the second fastening part (400). The second fastening guide member (520) extends to form a closed curve along the circumferential direction of the second fastening part (400). The outer surface of the second fastening guide member (520) is positioned on the same plane as the inner surface of the second fastening part (400). The thickness of the second fastening guide member (520) is formed to be smaller than the thickness of the second fastening part (400). The second fastening guide member (520) is positioned so that its inner surface faces the outer surface of the fluid transfer unit (200) at a predetermined distance. 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 conversion unit (530) described later. In this case, the second fastening guide member (520) is positioned so that its outer surface faces the inner surface of the first fastening guide member (510) at a predetermined distance.

[0046] The conversion unit (530) is provided between the first fastening guide member (510) and the second fastening guide member (520) and converts the relative rotation of the first fastening guide member (510) and the second fastening guide member (520) into linear movement.

[0047] A conversion unit (530) according to one embodiment of the present invention includes a first conversion member (531) and a second conversion member (532).

[0048] The first conversion member (531) protrudes from the inner surface of the first fastening guide member (510). According to one embodiment of the present invention, the first conversion member (531) may be formed to have the shape of a screw thread that protrudes radially inward from the inner surface of the first fastening guide member (510) and extends in a spiral shape along the length direction of the first fastening guide member (510).

[0049] 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) may be formed to have a screw thread shape that protrudes radially outward from the outer surface of the second fastening guide member (520) and extends in a spiral shape along the length direction of the second fastening guide member (520). The second conversion member (532) rotates relative to the first conversion member (531) when the second fastening part (400) rotates and is screw-coupled to the first conversion member (531). Accordingly, the second conversion member (532) can convert the relative rotational motion of the first fastening part (300) and the second fastening part (400) into the linear motion of the second fastening part (400) relative to the first fastening part (300), thereby inducing the fluid transfer part (200) to be inserted into the interior of the fluid supply part (100).

[0050] The anti-twisting member (600) is provided between the fluid supply member (100) and the first fastening guide member (510) and prevents relative rotation of the fluid supply member (100) with respect to the first fastening member (300). Accordingly, the anti-twisting member (600) can prevent twisting and torsion of the fluid supply member (100) caused by the rotational force of the second fastening member (400) during the process in which the fluid transfer member (200) is inserted into the interior of the fluid supply member (100). The anti-twisting member (600) according to one embodiment of the present invention is formed to have a circular ring shape and is inserted into the interior of the empty space formed between the fluid supply member (100) and the first fastening guide member (510). The anti-twisting member (600) is positioned so that one side surface contacts the end surface of the first fastening member (300). The anti-twisting member (600) is provided with a material having elastic restoring force, such as rubber or silicone. The anti-twisting part (600) has its inner surface and outer surface in close contact with the outer surface of the fluid supply part (100) and the inner surface of the first fastening guide member (510), respectively, by means of its own elastic restoring force. Accordingly, the anti-twisting part (600) can prevent lifting due to the gap between the fluid supply part (100) and the first fastening part (300), and can prevent relative rotation of the fluid supply part (100) with respect to the first fastening part (300).

[0051] The assembly process of a high-pressure hose fitting device (1) according to one embodiment of the present invention will be described in detail below.

[0052] FIGS. 4 to 7 are schematic drawings illustrating the assembly process of a fitting device for a high-pressure hose according to one embodiment of the present invention.

[0053] Referring to FIGS. 4 to 7, the fluid supply unit (100) is inserted into the interior of the first fastening unit (300).

[0054] As both sides of the first fastening part (300) are formed to be open, the fluid supply part (100) is positioned so that its end protrudes a predetermined distance toward one side of the first fastening part (300) (right side according to FIG. 4).

[0055] The anti-twisting part (600) is inserted into the empty space formed between the fluid supply part (100) and the first fastening guide member (510).

[0056] The anti-twisting part (600) is inserted up to a position where one side contacts the end surface of the first fastening part (300).

[0057] The anti-twisting part (600) is in close contact with the outer surface of the fluid supply part (100) and the inner surface of the first fastening guide member (510) respectively by its own elastic restoring force.

[0058] The fluid transfer part (200) is inserted into the interior of the second fastening part (400).

[0059] More specifically, the insertion part (210) is inserted into one side (left side based on FIG. 5) of the second fastening part (400) where the stopper part (410) is not formed.

[0060] As the insertion part (210) is inserted into the interior of the second fastening part (400) by a predetermined distance or more, one side of the flow prevention part (230) (right side in Fig. 5) comes into contact with the inner side of the stopper part (410) (left side in Fig. 5).

[0061] Afterwards, the end surface of the insertion part (210) on which the fixed part (220) is formed is positioned to face the end surface of the fluid supply part (100) coaxially.

[0062] At the same time, the inner end of the first fastening guide member (510) and the outer 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 end of the second conversion member (532) engages with the end of the first conversion member (531).

[0063] As the second fastening part (400) is rotated relative to the first fastening part (300), the second fastening guide member (520) is also rotated relative to the first fastening guide member (510), and the second conversion member (532) is screw-coupled to the first conversion member (531). In this case, the second fastening part (400) can be rotated relative to the fluid transfer part (200).

[0064] The second conversion member (532) is screw-coupled to the first conversion member (531) and moves the second fastening part (400) in a straight line toward the first fastening part (300).

[0065] The flow prevention part (230) in contact with the stopper part (410) moves the insertion part (210) together with the second fastening part (400) in conjunction with the movement of the second fastening part (400).

[0066] One end of the insertion part (210) (left end based on FIG. 6) is inserted into the interior of the fluid supply part (100).

[0067] The entry guide (221) induces smooth insertion of the insertion part (210) by compressing the inner surface of the fluid supply part (100) by means of an inclined surface or by expanding the inner diameter of the fluid supply part (100) to a certain size.

[0068] When the insertion part (210) is fully inserted into the interior of the fluid supply part (100), the anti-detachment part (222) is in close contact with the inner surface of the fluid supply part (100) and is coupled by engaging with the inner surface of the fluid supply part (100).

[0069] In this process, the fluid supply unit (100) can be maintained without relative rotation with respect to the first fastening unit (300) as it is in close contact with the anti-twist unit (600).

[0070] As the fluid transfer section (200) is fully inserted into the interior of the fluid supply section (100), the end surface of the second fastening guide member (520) comes into contact with the other side of the anti-twisting section (600), and the other side of the anti-flow section (230) is also assembled along the end surface of the fluid supply section (100).

[0071] Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom.

[0072] Therefore, the true technical scope of protection of the present invention should be determined by the following patent claims. Explanation of the symbols

[0074] 1: Fitting device for high-pressure hose 2: Dispenser 3 : Nozzle part 4 : Object to be filled 100 : Fluid supply unit 200 : Fluid transfer unit 210 : Insertion part 220 : Fixing part 221 : Entry guide section 300 : First fastening section 400 : Second fastening part 410 : Stopper part 500: Fastening guide part 510: First fastening guide member 520 : Second fastening guide member 530 : Converting part 531: First transformation member 532: Second transformation member 600 : Anti-torsion part

Claims

Claim 1 A fluid supply unit for supplying fluid; a fluid delivery unit for delivering 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 rotatably installed on the fluid delivery unit and spaced apart from the first fastening unit; and a fastening guide unit for inserting the fluid delivery unit into the interior of the fluid supply unit in conjunction with the relative rotation of the first fastening unit and the second fastening unit; wherein the fluid delivery unit comprises: an insertion unit inserted into the interior of the fluid supply unit; a fixing unit extending from the insertion unit and fixed to the inner surface of the fluid supply unit; and a flow prevention unit protruding from the outer surface of the insertion unit and disposed outside the fluid supply unit; wherein both sides of the flow prevention unit each contact the end surface of the fluid supply unit and a stopper unit protruding from the inner surface of the second fastening unit, and the fixing unit extends obliquely from the insertion unit and includes an entry guide unit that guides the insertion unit to be inserted into the interior of the fluid supply unit. A fitting device for a high-pressure hose characterized by including: a detachment prevention member extending from the entry guide member toward the insertion member and preventing the insertion member from detaching from the fluid supply member. Claim 2 A fitting device for a high-pressure hose according to claim 1, characterized in that the fastening guide portion is provided between the first fastening portion and the second fastening portion. Claim 3 A fitting device for a high-pressure hose according to claim 1, wherein the fastening guide part comprises: a first fastening guide member extending from the first fastening part; a second fastening guide member extending from the second fastening part and positioned facing the first fastening guide member; and a conversion part provided between the first fastening guide member and the second fastening guide member and converting the relative rotation of the first fastening guide member and the second fastening guide member into linear movement. Claim 4 A fitting device for a high-pressure hose according to claim 3, wherein the conversion member comprises: a first conversion member protruding from the inner surface of the first fastening guide member; and a second conversion member protruding from the outer surface of the second fastening guide member and rotatably coupled to the first conversion member. Claim 5 A fitting device for a high-pressure hose according to claim 4, characterized in that the first conversion member and the second conversion member are provided in the form of screw threads and are screw-coupled. Claim 6 A fitting device for a high-pressure hose, characterized by further including, in claim 3, a torsion prevention part that prevents relative rotation of the fluid supply part with respect to the first connecting part. Claim 7 A fitting device for a high-pressure hose according to claim 6, characterized in that the anti-twisting part is in close contact with the outer surface of the fluid supply part and the inner surface of the first fastening guide member by means of elastic restoring force. Claim 8 delete Claim 9 delete Claim 10 delete

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