Fasteners for maintaining solid fastening of equipment for ships

Abstract

The present invention relates to a fastener for maintaining a secure connection of a ship's outfitting material. Specifically, according to one embodiment of the present invention, a fastener for maintaining a secure connection of a ship's outfitting material may be provided, comprising: a coil member inserted into the insertion groove and engaged with the first screw portion, wound at least once, and having a hollow portion; and a fastener member inserted into the hollow portion of the coil member and having a second screw portion capable of engaging with the coil member.

Description

Technology Field

[0001] The present invention relates to a fastener for maintaining a secure fastening of a ship's outfitting material. Background Technology

[0002] Generally, a staircase refers to a stepped passageway connecting two floor surfaces of different heights. In the case of staircases installed on a ship, they may be utilized as a passageway for crew members, feature a steel frame structure, and be formed of metal material.

[0003] Meanwhile, conventional stairs may include a plurality of flat-plate-shaped steps and a support frame that fixes both ends of the plurality of steps. In this case, the plurality of steps are each fixed to the support frame by welding, or are fixed by being coupled to the support frame via fasteners such as bolts and nuts.

[0004] However, when multiple scaffoldings and support frames are fixed to each other by welding, there is a problem of reduced work efficiency because each scaffolding must be welded to the support frame.

[0005] In addition, when multiple steps and a support frame are mutually fixed using fasteners such as bolts and nuts, the bolts are fastened into pre-formed fastening grooves in the support frame; however, if the stairs are used for a long time, there is a problem where the fastening grooves are damaged due to surface friction between the grooves and the bolts.

[0006] In addition, there is a problem in that the fixing force between multiple footplates and the support frame is reduced as the connection of bolts and nuts is easily released due to external forces such as vibration. The problem to be solved

[0007] The embodiments of the present invention are devised to solve the problems of the aforementioned prior art, and aim to provide a fastener for maintaining a robust connection of ship outfitting materials, which can improve work efficiency compared to existing methods when joining ship outfitting materials and can maintain a robust connection state between ship outfitting materials even when external force is applied or a long period of time has elapsed. means of solving the problem

[0008] According to one aspect of the present invention, a fastening device for maintaining a rigid fastening of a ship outfitting material for connecting and mutually fixing a first frame having an insert portion having a first screw portion and a second frame provided at both ends of the first frame, the fastening device comprises: a reinforcing member having a hollow portion and at least a portion of which is inserted so as to be in close contact with the insert portion; and a fastening member having a second screw portion and inserted and coupled into the hollow portion of the reinforcing member, wherein the reinforcing member comprises a first engaging portion that engages with the first screw portion; A fastening device for maintaining a secure fastening of a ship outfitting material may be provided, comprising a second engaging part that is opposite to the first engaging part and engages with the second screw part, wherein the diameter of the inlet side of the reinforcing member into which the fastening member is inserted and the diameter of the outlet side of the reinforcing member into which the fastening member is inserted and protrudes are set to be smaller than the diameter of the center side of the reinforcing member into which the fastening member is inserted, the thread pitch of the second engaging part on the inlet side of the reinforcing member and the thread pitch of the second screw part on the outlet side of the reinforcing member are set to be smaller than the thread pitch located at the center of the reinforcing member, and the thread height of the second engaging part on the inlet side of the reinforcing member and the thread height of the second screw part on the outlet side of the reinforcing member are set to be lower than the thread height located at the center of the reinforcing member.

[0009] Additionally, the reinforcing member may further include a close-fitting catch that is connected to the first interlocking part and the second interlocking part, and is expanded by the fastening member inserted into the hollow part to be in close contact with the outer edge of the insertion part.

[0010] Additionally, the above-mentioned close-fitting member includes a third screw portion connected to the second interlocking member and engaging with the second screw portion, and the diameter formed by the third screw portion may be smaller than the diameter formed by the second interlocking member.

[0011] Additionally, the close-fitting catch portion may further include an inclined portion connected to the first interlocking portion and formed at a predetermined angle; and at least one cut portion formed by cutting along the length direction of the inclined portion.

[0012] In addition, the diameter of the inlet side of the reinforcing member into which the fastening member is inserted can be formed to be the same as the diameter of the outlet side of the reinforcing member into which the fastening member is inserted and protrudes. Effects of the invention

[0013] According to the fastening device for maintaining a rigid connection of ship outfitting materials according to the embodiments of the present invention, when joining ship outfitting materials together, work efficiency can be improved compared to the conventional method, and the connection state between ship outfitting materials can be maintained rigidly even when external force is applied or a long period of time has elapsed. Brief explanation of the drawing

[0014] FIG. 1 is a drawing showing a first frame and a second frame mutually fixed by a fastener for maintaining a rigid fastening of a ship outfitting material according to one embodiment of the present invention. FIG. 2 is a drawing showing an example of a fastener for maintaining a secure fastening of the ship outfitting material of FIG. 1. Figure 3 is a cross-sectional view of AA of Figure 2. FIG. 4 is a drawing showing a modified example of a fastener for maintaining a rigid fastening of the ship outfitting material of FIG. 1. FIG. 5 is a drawing showing an example of a fastener for maintaining a rigid fastening of a ship outfitting material according to another embodiment of the present invention. Figure 6 is a cross-sectional view of the BB in Figure 5. FIGS. 7 to 9 are diagrams showing the usage state of a fastener for maintaining a secure fastening of the ship outfitting material of FIG. 5. FIG. 10 is a drawing showing a modified example of a fastener for maintaining a rigid fastening of the ship outfitting material of FIG. 5. FIG. 11 is a drawing showing another modified example of a fastener for maintaining a tight fastening of the ship outfitting material of FIG. 5. Specific details for implementing the invention

[0015] Hereinafter, specific embodiments for implementing the concept of the present invention will be described in detail with reference to the drawings.

[0016] In addition, in describing the present invention, if it is determined that a detailed description of related known components or functions could obscure the essence of the invention, such detailed description is omitted.

[0017] Furthermore, when it is mentioned that one component is 'connected' or 'fixed' to another component, it should be understood that it may be directly connected or fixed to that other component, or that other components may exist in between.

[0018] The terms used in this specification are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0019] Furthermore, it should be noted in advance that expressions such as "one side," "the other side," etc. in this specification are described based on the drawings, and may be expressed differently if the orientation of the object changes. For the same reason, some components in the attached drawings may be exaggerated, omitted, or schematically depicted, and the size of each component does not entirely reflect its actual size.

[0020] Additionally, terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but such components are not limited by such terms. These terms are used solely for the purpose of distinguishing one component from another.

[0021] The meaning of 'comprising' as used in the specification specifies certain characteristics, regions, integers, steps, actions, elements, and / or components, and does not exclude the existence or addition of other specific characteristics, regions, integers, steps, actions, elements, components, and / or groups.

[0022] Hereinafter, with reference to the drawings, a specific configuration of a fastener for maintaining a rigid connection of a ship's outfitting material according to an embodiment of the present invention will be described. Referring to FIGS. 1 to 3, a fastener (1) for maintaining a rigid connection of a ship's outfitting material according to an embodiment of the present invention is a device for connecting a first frame (2) and a second frame (3) to each other and fixing them together, and may include a coil member (10) and a fastener member (20).

[0023] Meanwhile, for the convenience of explanation, the first frame (2) and the second frame (3) are briefly described. The first frame (2) is a part that provides a stepping surface on which a person can step, and it may be a square-shaped frame.

[0024] At this time, the first frame (2) may be provided in multiple numbers, and the multiple first frames (2) may be spaced apart at a predetermined interval between the second frames (3) that are positioned facing each other.

[0025] Meanwhile, an insertion groove (21) having a first screw portion (213a) may be provided on the inner surface of the first frame (2). This insertion groove (21) is a part into which a coil member (10) is inserted, and the shape of the insertion groove (21) may have a shape corresponding to the shape of the coil member (10).

[0026] The specific shape of the insertion groove (21) will be described later. For example, the first frame (2) may be formed of aluminum (Al) material having a predetermined yield strength.

[0027] The second frame (3) can be connected to both ends of the first frame (2) via a fastening member (20). A through hole (31) corresponding to the insertion groove (21) of the first frame (2) may be formed in the second frame (3). For example, the second frame (3) may be formed of a material substantially identical to that of the first frame (2), such as aluminum (Al) having a predetermined yield strength.

[0028] The coil member (10) can be inserted into the insertion groove (21) and directly engaged with the fastening member (20), thereby improving the fastening force of the fastening member (20). To this end, the coil member (10) may be provided with a hollow portion (11), and the fastening member (10) may be inserted through this hollow portion (11).

[0029] Specifically, the coil member (10) can be inserted into the insertion groove (21) while rotating in one direction by a separate insertion device (not shown) and engaged with the first screw portion (213a). In this way, since the fastening member (20) is not directly fastened to the first frame (2) but is fastened to the coil member (10), damage that may be caused to the first frame (2) due to contact with the fastening member (20) when the first frame (2) and the fastening member (20) are combined, such as wear of the first screw portion (213a) of the insertion groove (21), can be prevented.

[0030] Meanwhile, regarding the insertion groove (21) into which the coil member (10) is inserted, the insertion groove (21) may include an opening (211) formed to be open so that a fastening member (20) can be inserted, a closing part (212) facing the opening (211) and selectively contacting the end of the fastening member (20) inserted through the opening (211) to restrict the insertion of the fastening member (20), and a connecting part (213) connecting the opening (211) and the closing part (212).

[0031] At this time, the outer diameter (D1) on the open side of the coil member (10) can be formed to be substantially the same as the outer diameter (D2) on the closed side of the coil member (10). Here, the outer diameter (D1) on the open side of the coil member (10) refers to the outer diameter formed by the coil member (10) located on the open side (211), and the outer diameter (D2) on the closed side of the coil member (10) refers to the outer diameter formed by the coil member (10) located on the closed side (212).

[0032] Meanwhile, the coil member (10) may have a shape in which a metal wire is wound at least once. At this time, the distance (a) between two metal wires adjacent in the vertical direction that are wound on the open part (211) side may be formed to be substantially the same as the distance (b) between two metal wires adjacent in the vertical direction that are wound on the closed part (212) side. Additionally, the diameter (c) of the open part end of the coil member (10) located on the open part (211) side may be formed to be substantially the same as the diameter (d) of the closed part end of the coil member located on the closed part (212) side.

[0033] At this time, the coil member (10) may be formed with a cross-sectional shape that is, for example, a rhombus shape. However, this is merely an example, and the concept of the present invention is not limited by this. For example, the shape of the coil member (10) can be applied in various ways as long as at least a part of it can be engaged with the first screw portion (213a).

[0034] The fastening member (20) is a part that engages with the coil member (10) and may be provided with a second screw portion (201). At this time, the second screw portion (201) may be inserted into the hollow portion (11) and engage with the coil member (10). To this end, the fastening member (20) may be divided into a body portion (20') in which the second screw portion (201) is provided and a head portion (20'') connected to the body portion (20').

[0035] Hereinafter, a modified example of a fastener for maintaining a rigid fastening of a ship outfitting material according to one embodiment of the present invention will be described with reference to FIG. 4.

[0036] Referring to FIG. 4, the outer diameter (D3) of the coil member (10a) formed by the coil member (10a) located on the side of the opening (211') of the insertion groove (21a) may be formed differently from the outer diameter (D4) of the coil member (10a) formed by the coil member (10a) located on the side of the closing (212') of the insertion groove (21a). For example, the outer diameter (D4) of the coil member (10a) may be formed smaller than the outer diameter (D3) of the coil member (10a) on the side of the opening. Correspondingly, the diameter formed by the second screw portion (201a) may also be formed larger as it approaches the head portion (20''). Likewise, the opening (211') of the insertion groove (21a) may have a larger diameter than the diameter of the closing portion (212') of the insertion groove (21a).

[0037] Meanwhile, the coil member (10a) may have a shape in which a metal wire is wound at least once. At this time, the distance (e) between two metal wires adjacent in the vertical direction among the metal wires wound on the open part (211') side may be formed to be substantially the same as the distance (f) between two metal wires adjacent in the vertical direction among the metal wires wound on the closed part (212') side.

[0038] Additionally, the diameter (g) of the end of the coil member (10a) located on the side of the opening (211') can be formed to be substantially the same as the diameter (h) of the end of the coil member (10a) located on the side of the closing (212').

[0039] Hereinafter, a fastener for maintaining a secure fastening of a ship outfitting material according to another embodiment of the present invention will be described with reference to FIGS. 5 and 6. Since this embodiment differs from the embodiment described above in terms of the reinforcing member (40), the description will focus on these differences, and the description of identical parts will be based on the description in the embodiment described above.

[0040] Referring to FIGS. 5 and 6, the reinforcing member (40) can improve the fastening force of the fastening member (20b) by having at least a portion of it inserted into the insertion portion (21b) and directly engaging with the fastening member (20b). To this end, the reinforcing member (40) may include a first engaging portion (411) engaged with the first screw portion (213a) and a second engaging portion (412) opposite the first engaging portion (411) and engaged with the second screw portion (201b).

[0041] Meanwhile, the inlet side diameter (D5) of the reinforcing member (40) into which the fastening member (20b) is inserted may be substantially the same as the outlet side diameter (D6) of the reinforcing member (40) into which the fastening member (20b) is inserted and protrudes. In addition, the thread pitch and thread height of the first interlocking part (411) and the second interlocking part (412) may be the same, respectively, at the inlet side of the reinforcing member (40) into which the fastening member (20b) is inserted and at the outlet side of the reinforcing member (40) into which the fastening member (20b) is inserted and protrudes.

[0042] The first engagement portion (411) and the second engagement portion (412) may each include a plurality of screw threads corresponding to the first screw portion (213a) and the second screw portion (201b) so as to engage with the first screw portion (213a) and the second screw portion (201b), respectively.

[0043] Meanwhile, the reinforcing member (40) may additionally include a close-fitting catch (413) that is connected to the first interlocking part (411) and the second interlocking part (412), and is selectively extended by the fastening member (20b) to selectively adhere to the outer edge of the insertion part (21b). This close-fitting catch (413) has a hollow inside, and the fastening member (20b) can be fastened to this hollow.

[0044] Specifically, the close-fitting catch portion (413) may include a first interlocking portion (411) connected to the first interlocking portion (411), an inclined portion (4131) formed at a predetermined angle, and at least one cut portion (4132) formed by cutting along the length of the inclined portion (4131).

[0045] The inclined portion (4131) may be formed to extend in one direction from the first interlocking portion (411) and the second interlocking portion (412), and may be an inclined surface that is inclined at a predetermined angle as it moves in one direction. For example, the inclined portion (4131) may have a shape in which the diameter decreases as it moves in one direction. Accordingly, the close-fitting catch portion (413) can be easily entered into the insertion portion (21b).

[0046] At least one incision (4132) may be arranged radially with respect to the inclined portion (4131). At this time, the distance between two inclined portions (4131) with the incision (4132) in between may vary by a fastening member (20b) that enters the hollow of the close-fitting portion (413). In other words, a portion of the inclined portion (4131) may be cut by the incision (4132), and as a result, the inclined portion (4131) may be selectively extended outward. Here, the outer side refers to the radial outer side of the hollow.

[0047] Meanwhile, a third screw portion (4133) may be provided in the hollow of the close-fitting locking portion (413). At this time, the third screw portion (4133) may be connected to the second interlocking portion (412) and may be connected to the second screw portion (201b). The diameter formed by the third screw portion (4133) may be smaller than the diameter formed by the second screw portion (201b).

[0048] At this time, when the fastening member (20b) enters the contact catch portion (413), the second screw portion (201b) of the fastening member (20b) presses the third screw portion (4133) outwardly, thereby allowing the inclined portion (4131) to expand outward. The inclined portion (4131) expanded in this way can be in close contact with the edge of the insertion portion (21b), for example, the outer surface corresponding to the outer side of the insertion portion (21b). Meanwhile, at least a portion of the second screw portion (201b) of the fastening member (20b) can be engaged with the second interlocking portion (412)

[0058] , and the remainder of the second screw portion (201b) can be engaged with the screw thread (311) of the through hole (31b). In this way, as at least a portion of the second screw portion (201b) is aligned with the second interlocking portion (412), the fastening force between the first frame (2b) and the second frame (3b) can be improved.

[0049] Hereinafter, with reference to FIGS. 7 to 9, the operation and effect of a fastener for maintaining a secure fastening of a ship outfitting material having the configuration described above will be explained.

[0050] Referring to FIG. 7, a reinforcing member (40) is inserted into the insertion part (21b) of the first frame (2b) through a separate insertion device (not shown). At this time, the reinforcing member (40) is inserted into the insertion part (21b) while rotating in one direction, and when the close-fitting catch part (413) is exposed to the outside of the insertion part (21b), the insertion of the reinforcing member (40) into the insertion part (21b) is completed.

[0051] Meanwhile, as the reinforcing member (40) is inserted into the insertion part (21b) while rotating in one direction, the first interlocking part (411) of the reinforcing member (40) engages with the first screw part (213a) of the insertion part (21b), thereby firmly fixing the reinforcing member (40) to the first frame (2b).

[0052] Referring to FIG. 8, the second frame (3b) is in contact with the first frame (2b) so that the through hole (31b) of the second frame (3b) and the insertion part (21b) of the first frame (2b) are in communication.

[0053] Next, the fastening member (20b) is fastened through the through hole (31b) while the first frame (2b) and the second frame (3b) are in contact. At this time, the threads (311) of the fastening member (20b) passing through the through hole (31b) enter the second interlocking part (412) of the reinforcing member (40) and engage with the second interlocking part (412), thereby securing the fastening.

[0054] Referring to FIG. 9, the fastening member (20b) passing through the second interlocking part (412) enters the close-locking part (413). During this process, the second screw part (201b) of the fastening member (20b) engages with the third screw part (4133) of the close-locking part (413). At this time, since the diameter formed by the third screw part (4133) is smaller than the diameter formed by the second screw part (201b), the distance between two adjacent cut parts (4132) in the radial direction is narrowed by the fastening member (20b), and the close-locking part (413) expands outward. Then, as the expanded close-locking part (413) comes into close contact with the outer edge of the insertion part (21b), the fastening force between the first frame (2b) and the second frame (3b) can be improved.

[0055] Hereinafter, a modified example of a fastener for maintaining a rigid fastening of a ship outfitting material according to another embodiment of the present invention will be described with reference to FIG. 10. Since this embodiment differs from the above-described embodiment in terms of the fastening member (20c) and the reinforcing member (40a), the description will focus on these differences, and the description of identical parts will be based on the description in the above-described embodiment.

[0056] Referring to FIG. 10, a fastener (1c) for maintaining a secure fastening of a ship's outfitting material may include a fastening member (20c) and a reinforcing member (40a).

[0057] An insertion portion (21c) in which a first screw portion (213b) is formed may be provided on the inner surface of the first frame (2c). At this time, the shape of the first screw portion (213b) and the insertion portion (21c) may be determined by the shape of the reinforcing member (40a) and the first interlocking portion (411a) of the reinforcing member (40a). This will be described later.

[0058] The reinforcing member (40a) may be inserted so that at least a portion thereof is in close contact with the insertion part (21c), and a fastening member (20c) having a second screw part (201c) may be fastened to the inner surface of the reinforcing member (40a). In this case, the reinforcing member (40a) and the fastening member (20c) may be fastened in a direction from the inlet side to the outlet side of the reinforcing member (40a), for example, from the upper direction to the lower direction with respect to FIG. 10.

[0059] At this time, the inlet side diameter (D7) of the reinforcing member (40a) into which the fastening member (20c) is inserted may be larger than the outlet side diameter (D8) of the reinforcing member (40a) into which the fastening member (20c) is inserted and protrudes.

[0060] Meanwhile, on the outer surface of the reinforcing member (40a), a first engaging part (411a) that engages with the first screw part (213b) may be provided, and on the inner surface of the reinforcing member (40a), a second engaging part (412a) that engages with the second screw part (201c) may be provided.

[0061] At this time, the first interlocking part (411a) can be divided into an inlet-side second interlocking part (4111a) located on the inlet side of the reinforcing member (40a) and an outlet-side second interlocking part (4112a) located on the outlet side of the reinforcing member (40a).

[0062] Meanwhile, the thread pitch (k) of the second engagement part (4111a) on the inlet side may be greater than the thread pitch (l) of the second engagement part (4112a) on the outlet side. Additionally, the thread height of the second engagement part (4111a) on the inlet side may also be higher than the thread height of the second engagement part (4112a) on the outlet side. However, this is merely an example, and the concept of the present invention is not limited by this.

[0063] Hereinafter, another modified example of a fastener for maintaining a rigid fastening of a ship outfitting material according to another embodiment of the present invention will be described with reference to FIG. 11. Since this embodiment differs from the above-described embodiment in terms of the fastening member (20e) and the reinforcing member (40c), the description will focus on these differences, and the description of identical parts will be based on the description in the above-described embodiment.

[0064] Referring to FIG. 11, a fastener (1e) for maintaining a secure fastening of a ship's outfitting material may include a fastening member (20e) and a reinforcing member (40c).

[0065] An insertion portion (21e) in which a first screw portion (213d) is formed may be provided on the inner surface of the first frame (2e). At this time, the shape of the first screw portion (213d) and the insertion portion (21e) may be determined by the shape of the reinforcing member (40c) and the first interlocking portion (411c) of the reinforcing member (40c). This will be described later.

[0066] At this time, at least a portion of the reinforcing member (40c) is inserted in close contact with the insertion portion (21e), and a fastening member (20e) having a second screw portion (201e) may be provided in close contact with the inner surface of the reinforcing member (40c). In this case, the reinforcing member (40c) and the fastening member (20e) may be fastened in a direction from the exit side of the reinforcing member (40c) toward the entrance side, for example, from the lower direction toward the upper direction with respect to FIG. 11.

[0067] At this time, the inlet side diameter (D11) of the reinforcing member (40c) into which the fastening member (20e) is inserted and the outlet side diameter (D12) of the reinforcing member (40c) into which the fastening member (20c) is inserted and protrudes may be smaller than the center side diameter of the reinforcing member (40c) into which the fastening member (20c) is inserted.

[0068] Meanwhile, a first engaging part (411c) that engages with the insertion part (21e) may be provided on the outer surface of the reinforcing member (40c), and a second engaging part (412c) that engages with the second screw part (201e) may be provided on the inner surface of the reinforcing member (40c). At this time, the first engaging part (101c) may be divided into an inlet-side second engaging part (4111c) located on the inlet side of the reinforcing member (40c) and an outlet-side second screw part (4112c) located on the outlet side of the reinforcing member (40c).

[0069] Here, the thread pitch (o) of the second engagement portion (4111c) on the inlet side and the thread pitch (p) of the second thread portion (4112c) on the outlet side may be smaller than, for example, the thread pitch located at the center of the reinforcing member (10c). Additionally, the thread height of the second engagement portion (4111c) on the inlet side and the thread height of the second thread portion (4112c) on the outlet side may be lower than the thread height located at the center of the reinforcing member (10c).

[0070] Although the embodiments of the present invention have been described above as specific embodiments, they are merely examples and the present invention is not limited thereto, but should be interpreted as having the broadest scope in accordance with the basic concept disclosed in this specification. Those skilled in the art may implement patterns of shapes not specified by combining or substituting the disclosed embodiments, and this also does not deviate from the scope of the present invention. Furthermore, those skilled in the art may easily modify or alter the disclosed embodiments based on this specification, and it is evident that such modifications or alterations also fall within the scope of the rights of the present invention. Explanation of the symbols

[0071] 1, 1a, 1b, 1c, 1d, 1e:

[0087] fasteners for marine outfitting materials 2, 2a, 2b, 2c, 2d, 2e: 1st frame 21, 21a: Insertion groove 21b, 21c, 21d, 21e: Inserts 211, 211': Open 212, 212': Closed 213, 213': Connection 213a, 213b, 213c, 213d: First thread section 3, 3a: Second frame 31, 31a: Through hole 311: Thread 10, 10a: Coil member 11: Chinese government 40, 40a, 40b, 40c: Reinforcement members 411, 411a, 411b, 411c: First interlocking part 412, 412a, 412b, 412c: Second interlocking part 4111a, 4111b, 4111c: First interlocking part on the entrance side 4112a, 4112b, 4112c: Exit-side second interlocking part 413: Close-fitting locking part 4131: Inclined part 4132: Incision 4133: Third thread section 20, 20a, 20b, 20c, 20d, 20e: Fastening members 20': Body part 20'': Head part 201, 201a, 201b, 201c, 201d, 201e: Second threaded section

Claims

Claim 1 A fastening device for maintaining a rigid connection of a ship outfitting material, comprising: a reinforcing member having a hollow portion and at least a portion of which is inserted so as to be in close contact with the insertion portion; and a fastening member having a second screw portion and which is inserted and coupled into the hollow portion of the reinforcing member, and which is inserted into and coupled with the second screw portion, wherein the reinforcing member comprises a first engaging portion that engages with the first screw portion; and includes a second engagement portion facing the first engagement portion and engaging with the second screw portion, wherein the diameter of the inlet side of the reinforcing member into which the fastening member is inserted and the diameter of the outlet side of the reinforcing member into which the fastening member is inserted and protrudes are set to be smaller than the diameter of the center side of the reinforcing member into which the fastening member is inserted, and the thread pitch of the second engagement portion on the inlet side of the reinforcing member and the thread pitch of the second screw portion on the outlet side of the reinforcing member are set to be smaller than the thread pitch located at the center of the reinforcing member, and the thread height of the second engagement portion on the inlet side of the reinforcing member and the thread height of the second screw portion on the outlet side of the reinforcing member are set to be lower than the thread height located at the center of the reinforcing member, and the reinforcing member further includes a contact catch portion connected to the first engagement portion and the second engagement portion, which is expanded by the fastening member inserted into the hollow portion and adheres to the outer edge of the insertion portion, wherein the contact catch portion is connected to the second engagement portion and the second screw portion It includes a third screw portion that engages, wherein the diameter formed by the third screw portion is smaller than the diameter formed by the second engagement portion, and the close-fitting catch portion is connected to the first engagement portion and is formed at an inclined angle;A fastener for maintaining a secure fastening of a ship outfitting material, further comprising at least one cut portion formed by cutting in the longitudinal direction of the inclined portion, wherein the diameter of the inlet side of the reinforcing member into which the fastening member is inserted is formed to be the same as the diameter of the outlet side of the reinforcing member into which the fastening member is inserted and protrudes.

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