Dome structure and shock-absorbing device including the same

Abstract

The present invention relates to a dome structure used to absorb external shock, comprising a dome-shaped main body, wherein the main body comprises: a ring-shaped flange portion extending along the lower circumference direction; a circular buffer portion protruding upward from the flange portion to which external shock is directly applied; and a connecting portion connecting the flange portion and the buffer portion, extending from the buffer portion to the flange portion; and wherein, when an external shock is applied, the main body absorbs the shock by deforming the buffer portion and the connecting portion. In addition, another aspect of the present invention is an impact protection device for protecting a protective object having an outer surface and including the dome structure from external impact, characterized in that a buffer portion of the dome structure is arranged to protrude and is installed on the surface of the protective object.

Description

Technology Field

[0001] The present invention relates to a dome structure and an impact-resistant device including the same. Background Technology

[0003] Generally, small vessels may suffer external and structural damage, such as dents, scratches, and paint damage, as the hull plating comes into direct contact with quays, floating docks, or other hulls during the berthing process. To prevent such damage, the conventional method of suspending waste tires from the exterior of the hull to use as cushioning material has been widely applied. Waste tires are also installed for the same purpose in fishing ports, small quays, and floating structures.

[0004] However, there are several problems with this waste tire-based shock protection method.

[0005] For example, waste tires are highly likely to detach and be lost into the sea due to rope wear, corrosion, or impact while exposed to the marine environment for extended periods. Lost waste tires contribute to an increase in marine floating debris, and the leaching of fine rubber particles and harmful additives has an adverse effect on the marine ecosystem. Furthermore, waste tires lack standardized specifications, materials, and stiffness, making it difficult to ensure uniformity in installation quality and shock absorption performance. Inconsistencies in specifications can lead to concentrated overloads or performance degradation in specific sections, and also hinder the standardization of installation procedures. Additionally, since waste tires are not structurally designed for shock absorption, it is difficult to theoretically or experimentally verify their durability against contact loads, stress distribution effects, and fatigue life under repeated impacts.

[0006] Due to these problems, there is a demand for the development of a new impact-absorbing structure that satisfies all environmental, economic, and performance requirements as a substitute for waste tires. Prior art literature

[0008] Korean Registered Patent No. 20-0218543 The problem to be solved

[0009] Accordingly, the present invention was devised to solve the aforementioned problems and aims to provide an impact-resistant product that can replace waste tires, is easy to install, and is standardizable.

[0010] In addition, the purpose is to resolve environmental issues such as marine loss and microplastic generation by using eco-friendly materials such as recycled rubber, and to provide sustainable, resource-circulating shock-absorbing products.

[0011] In addition, the purpose is to provide an impact-resistant product that improves shock dispersion and deformation-inducing characteristics when an external impact is applied, and secures the necessary elasticity and stiffness.

[0012] In addition, the purpose is to provide an impact-resistant product with a structure that can be combined as a single or multiple units.

[0013] Other objects and advantages of the present invention may be understood from the following description and will become more clearly apparent from the embodiments of the present invention. Furthermore, it will be readily apparent that the objects and advantages of the present invention can be realized by the means and combinations thereof set forth in the claims. means of solving the problem

[0015] According to the present invention, a dome structure is provided comprising a dome-shaped main body, wherein the main body comprises: a ring-shaped flange portion extending along the lower circumference direction; a circular buffer portion protruding upward from the flange portion to which an external impact is directly applied; and a connecting portion connecting the flange portion and the buffer portion, extending from the buffer portion to the flange portion; wherein, when an external impact is applied, the main body absorbs the impact by deforming the buffer portion and the connecting portion.

[0016] The above main body may include a rubber material.

[0017] The above main body may further include fiber reinforcement in the form of a reinforcing cloth or reinforcing cord.

[0018] The fiber reinforcement may include fibers with a tensile strength of 10 kg to 25 kg and a fineness in the range of 1500 D to 2500 D.

[0019] The above main body includes a fiber reinforcement in the form of a reinforcing cloth, and 2-ply to 4-ply fiber reinforcements are laminated in the buffer portion and the connecting portion, respectively, and 4-ply to 6-ply fiber reinforcements can be laminated in the flange portion.

[0020] The above main body includes a composite rubber sheet in which short fiber-shaped fiber reinforcement is dispersed in a rubber raw material, and the composite rubber sheet is formed by laminating multiple layers, and a pure rubber sheet not containing fiber reinforcement can be formed on the outer surface of the main body with a thickness of 5 mm to 10 mm.

[0021] The angle of inclination (θ) of the above connection part may be in the range of 40° to 85°.

[0022] The maximum diameter (D1) of the buffer portion may be 0.65 to 0.85 times the maximum diameter (D2) of the connection portion.

[0023] The main body comprises: a first curved surface where the buffer portion and the connecting portion meet; and a second curved surface where the flange portion and the connecting portion meet; wherein the first curved surface may have a radius of curvature (R1) of 70 mm to 150 mm and the second curved surface may have a radius of curvature (R2) of 20 mm to 60 mm.

[0024] The thickness (t) of the above connection part may be 0.5% to 10% of the maximum diameter (D1) of the above buffer part.

[0025] According to the present invention, an impact protection device is provided for protecting a protective object having an outer surface from external impact.

[0026] The shock-prevention device comprises: a cushioning unit including at least one of the above-mentioned dome structures; and a binding member for fixing the cushioning unit to the protection object; wherein the cushioning unit is installed on the surface of the protection object such that a buffer portion of the dome structure protrudes.

[0027] The flange portion of the above dome structure may include a fastening hole into which a binding member is inserted to connect and fix the protection object and the cushioning unit to each other.

[0028] The above buffer unit includes two or more combined dome structures, and the dome structures can be joined by their flange portions butting against each other. Effects of the invention

[0030] According to the present invention, the effect of marine environment conservation can be enhanced by preventing waste tires from being lost at sea, reducing microplastics, and reducing carbon emissions through the use of recycled rubber.

[0031] In addition, according to the present invention, an impact-prevention device having excellent shock absorption performance can be provided by effectively dispersing the impact.

[0032] In addition, according to the present invention, standardized mold production is possible, thereby realizing a reduction in manufacturing costs and providing an impact protection device that can increase the lifespan compared to waste tires. Brief explanation of the drawing

[0034] FIG. 1 is a perspective view of a dome structure according to one embodiment of the present invention. FIG. 2 is a front view of a dome structure according to one embodiment of the present invention. FIG. 3 is a plan view of a dome structure according to one embodiment of the present invention. FIG. 4 is a schematic diagram showing the buffer section, connecting section, and flange section of a dome structure according to one embodiment of the present invention. FIG. 5 is a conceptual diagram illustrating the cross-sectional shape and major dimensional relationship of a dome structure according to one embodiment of the present invention. FIG. 6 is a schematic diagram showing a first curved surface portion of a dome structure according to one embodiment of the present invention. FIG. 7 is a schematic diagram showing a second curved surface portion of a dome structure according to one embodiment of the present invention. FIG. 8 is a cross-sectional view and an enlarged view of a major part of a dome structure according to one embodiment of the present invention. FIG. 9 is a conceptual diagram illustrating the relationship between the planar shape and the main diameter (D1, D2) of a dome structure according to one embodiment of the present invention. FIG. 10 is a schematic diagram showing an impact protection device comprising a cushioning unit including a dome structure and a binding member for fixing the cushioning unit to a protected object. FIG. 11 is a schematic diagram showing one embodiment of the binding member illustrated in FIG. 10. FIG. 12 is a schematic diagram showing one embodiment of a buffer unit including two or more dome structures. FIG. 13 is a schematic diagram showing another embodiment of a buffer unit including two or more dome structures. FIG. 14 is a schematic diagram showing the state in which the shock-prevention device illustrated in FIG. 10 is applied even when the protected object is a ship. Specific details for implementing the invention

[0035] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, and should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention.

[0036] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention; thus, it should be understood that various equivalents and modifications that can replace them may exist at the time of filing this application.

[0037] In addition, in describing the present invention, if it is determined that a detailed description of related known components or functions may obscure the essence of the invention, such detailed description is omitted.

[0038] Since embodiments of the present invention are provided to more fully explain the invention to those skilled in the art, the shapes and sizes of the components in the drawings may be exaggerated, omitted, or schematically depicted for clearer explanation. Accordingly, the size or proportion of each component does not entirely reflect the actual size or proportion.

[0039] In describing each drawing, similar reference numerals have been used for similar components. In the attached drawings, the dimensions of the structures are depicted enlarged from their actual size for the clarity of the invention. The terms used to describe the various components are for illustrative purposes only and should not limit the components. The terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the invention, a first component may be named a second component, and similarly, a second component may be named a first component. A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0040] Terms such as "comprising" or "having," as used throughout the specification of the present invention, are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0041] Furthermore, when a part such as a layer, film, region, or plate is described as being "on" another part, this includes not only cases where it is "immediately above" the other part, but also cases where there is another part in between. Conversely, when a part such as a layer, film, region, or plate is described as being "under" another part, this includes not only cases where it is "immediately below" the other part, but also cases where there is another part in between. Additionally, in the specification of the present invention, being "placed on" may include cases where it is placed on the lower part as well as the upper part.

[0042] In addition, throughout the specification of the present invention, "curvature" refers to the degree of bending of an object. Therefore, if the object is in the form of a straight line, the curvature value is 0, and the greater the degree of bending of the object, the larger the curvature value appears. Meanwhile, "radius of curvature" refers to the radius of a circle created by extending a curve, and has an inverse relationship with curvature. Typically, the unit of the radius of curvature is expressed in mm, and it is also indicated as R, R1, or R2.

[0043] For example, if the radius of curvature is 25 mm, it means that the radius of the circle created by extending the curve is 25 mm. In this case, the curvature becomes 1 / 25 mm, which is the reciprocal of the radius of curvature.

[0044] In addition, in the specification of the present invention, "centroid surface" refers to a virtual reference plane that divides the dome structure into upper and lower equal parts based on the thickness direction of the dome structure, and the shape, curvature, and dimensions of each component are defined based on the centroid surface.

[0046] The present invention relates to a dome structure having a structure effective for shock absorption and a shock-prevention device for protecting a protective object having an outer surface including the dome structure from external shock.

[0047] FIGS. 1 to 9 relate to a dome structure, and FIGS. 10 to 14 relate to an impact protection device.

[0048] Hereinafter, specific embodiments of the dome structure and shock-prevention device of the present invention will be described in detail with reference to the attached drawings. For reference, the directions of front, back, up, down, left, and right used to specify relative positions in the following description are intended to aid in understanding the invention, and unless otherwise specifically defined, the directions shown in the drawings are used as the reference.

[0050] Dome structure (110)

[0051] FIG. 1 is a perspective view of a dome structure (110) according to an embodiment of the present invention, FIG. 2 is a front view of a dome structure (110) according to an embodiment of the present invention, FIG. 3 is a plan view of a dome structure (110) according to an embodiment of the present invention, FIG. 4 is a schematic diagram showing the buffer portion (111a), connection portion (111b), and flange portion (111c) of a dome structure (110) according to an embodiment of the present invention, FIG. 5 is a conceptual diagram showing the cross-sectional shape and major dimensional relationship of a dome structure (110) according to an embodiment of the present invention, FIG. 6 is a schematic diagram showing the first curved portion (C1) of a dome structure (110) according to an embodiment of the present invention, FIG. 7 is a schematic diagram showing the second curved portion (C2) of a dome structure (110) according to an embodiment of the present invention.

[0053] The dome structure (110) of the present invention includes a dome-shaped body (111) for absorbing shocks applied from the outside, and the body (111) is formed as an integrated structure including a buffer part (111a), a connecting part (111b), and a flange part (111c).

[0054] The above main body (111) preferably comprises a material having elastic restoring force and damping characteristics to effectively absorb and disperse external impact energy. For example, the above main body (111) may comprise a rubber material.

[0055] The above rubber material may include one or more of natural rubber, synthetic rubber, or recycled rubber.

[0056] The above synthetic rubber may be styrene-butadiene rubber, butadiene rubber, ethylene-propylene-diene rubber, nitrile-butadiene rubber, chloroprene rubber, or a mixture thereof, but is not limited thereto.

[0058] The above flange portion (111c) is a ring-shaped structure formed along the lower circumference of the main body (111) and may include one or more fastening holes (Ho) into which a fastening means for fixing to an object to be protected is inserted.

[0059] The above fastening hole (Ho) is a hole formed by penetrating the above flange portion (111c) in the thickness direction.

[0060] The above fastening holes (Ho) may be formed in multiple numbers, and their number, placement location, and arrangement form are not particularly limited. For example, the fastening holes (Ho) may be arranged at equal or unequal intervals along the circumferential direction of the flange portion (111c), and may be selectively designed depending on the application target.

[0061] The buffer portion (111a) is formed by protruding upward from the flange portion (111c) and has a disc-shaped structure as an area where external impact is directly applied.

[0062] The disc-shaped structure of the above buffer part (111a) can be formed as any one of a dome shape, a gently curved shape, or a substantially flat shape.

[0063] The above connecting portion (111b) is formed between the flange portion (111c) and the buffer portion (111a) and has an inclined curved surface structure that induces deformation upon external impact to disperse impact energy.

[0064] The buffer portion (111a) and the connecting portion (111b) form a dome shape that protrudes outward, so as a result, a pocket portion (Po) corresponding to the protruding shape is formed on the inside of the main body (111).

[0065] The pocket portion (Po) provides an internal space when the buffer is deformed, thereby allowing the elastic deformation of the buffer portion (111a) and the connecting portion (111b) to proceed smoothly.

[0066] As shown in FIGS. 1 to 3, the buffer portion (111a), connecting portion (111b), and flange portion (111c) are not divided into discontinuous corners at adjacent boundary areas but are formed as continuously connected through a curved shape. Accordingly, the entire body (111) can be configured to have a smoothly continuous curved structure rather than a stepped or bent shape in appearance, and when an external impact is applied, the buffer portion (111a) and connecting portion (111b) undergo elastic deformation to effectively absorb impact energy.

[0067] FIG. 4 is a drawing in which the boundaries of the buffer part (111a), the connecting part (111b), and the flange part (111c) may not be clearly visible in appearance because the main body (111) has a curved structure overall.

[0068] The buffer section (111a) can be defined as the area from the point where a new inclined surface begins to be formed with a change in curvature after the main curvature area formed at the top of the main body (111) ends.

[0069] The above connection portion (111b) can be defined as an area extending downward with a slope from the point where the buffer portion (111a) ends, and then changing its curvature again until just before the flange portion (111c) begins.

[0070] In the present invention, the distinction between the buffer section (111a), the connecting section (111b), and the flange section (111c) is not limited by absolute dimensions, but is characterized by being distinguished relatively according to the change in curvature and the change in the inclination direction of the main body (111). More specifically, the distinction between each region is defined based on a center plane (Cen) set according to the thickness direction of the dome structure (110), with the boundary defined by the section where the radius of curvature of the curved surface formed along the center plane (Cen) changes.

[0071] The above center plane (Cen) is a virtual reference plane that divides the upper and lower thicknesses of the dome structure (110) equally, as shown in FIG. 5.

[0072] The section where the radius of curvature changes is a region having transitional curved surface characteristics, and refers to a section where the radius of curvature changes continuously among the curved surfaces formed along the center plane (Cen) of the dome structure (110). This transitional curved surface characteristic can be described as being structurally included in the first curved surface section (C1) and the second curved surface section (C2). That is, the point where the main curved area of ​​the buffer section (111a) ends and the inclined curved surface of the connection section (111b) begins, and the point where the inclined curved surface of the connection section (111b) ends and the flange section (111c) begins, can all be described as transitional curved surface characteristics where a change in curvature occurs, and this is determined based on the point of change of the radius of curvature calculated from the center plane (Cen), regardless of the fine shape or thickness deviation of the outer surface of the main body (111).

[0073] The above buffer section (111a) includes the upper vertex region of the dome structure (110) and includes the entire first curved surface section (C1) in which the curvature changes with respect to the center plane (Cen).

[0074] The above-mentioned connecting portion (111b) is formed continuously from the buffer portion (111a) and includes the entire second curved portion (C2) in which the curvature gradually changes relative to the center plane (Cen). Here, the first curved portion (C1) refers to a curved area including the point where the main curvature region of the buffer portion (111a) ends and the inclined curved surface of the connecting portion (111b) begins, and the second curved portion (C2) refers to a curved area including the point where the inclined curved surface of the connecting portion (111b) ends and the flange portion (111c) begins.

[0075] The radius of curvature (R1) of the first curved surface (C1) may preferably be in the range of 70 mm to 150 mm, and the radius of curvature (R2) of the second curved surface (C2) may preferably be in the range of 20 mm to 60 mm. The range of the radius of curvature is an exemplary value according to one embodiment of the present invention and may vary depending on the required shock absorption performance or application environment.

[0077] It is preferable to design the thickness (t) of the connection portion (111b) based on the maximum diameter (D1) of the buffer portion (111a). In this case, the thickness (t) of the connection portion (111b) refers to the thickness measured in a direction perpendicular to the center plane (Cen) of the connection portion (111b) in the area of ​​the connection portion (111b) excluding the first curved portion (C1) and the second curved portion (C2). Additionally, the maximum diameter (D1) of the buffer portion (111a) refers to the maximum dimension of the circular contour obtained by projecting the center plane (Cen) included in the buffer portion (111a) from the top.

[0078] The above connection part (111b) is a part that secondarily absorbs the impact directly received by the buffer part (111a) when an external pressing impact is applied to the main body (111), and it is not desirable to design the scale related to the above connection part (111b) separately from the scale of the buffer part (111a).

[0079] Since the maximum diameter (D1) of the buffer section (111a) is the representative length scale of the area where external impact enters, the thickness (t) of the connection section (111b) is designed based on the maximum diameter (D1) of the buffer section (111a).

[0080] The thickness (t) of the connecting portion (111b) is 0.5% to 10% of the maximum diameter (D1) of the buffer portion (111a), preferably 1% to 8% of the maximum diameter (D1) of the buffer portion (111a), and more preferably 2% to 7% of the maximum diameter (D1) of the buffer portion (111a). At this time, if the thickness of the connecting portion (111b) is too thin, there is a risk of local damage and interlayer delamination, and if the thickness of the connecting portion (111b) is too thick, the reaction force becomes excessively large, and the shock absorption performance may be reduced.

[0081] Specifically, as the maximum diameter (D1) of the buffer portion (111a) increases, the bending moment applied to the connecting portion (111b) under the same impact increases. At this time, if the connecting portion (111b) is too thin, there is a risk of premature breakage or failure to restore due to excessive bending, and conversely, if it is too thick, the connecting portion (111b) does not fold and holds firmly, which may reduce the shock absorption efficiency.

[0083] FIG. 8 is a cross-sectional view and a major enlarged view of a dome structure (110) according to one embodiment of the present invention, and FIG. 9 is a conceptual diagram illustrating the relationship between the planar shape and major diameters (D1, D2) of a dome structure (110) according to one embodiment of the present invention.

[0085] The above main body (111) includes a fiber reinforcement (FR) in the form of a reinforcing cloth or reinforcing cord as needed.

[0086] The fiber reinforcement (FR) in the form of the above reinforcing cord refers to a fiber bundle that is twisted or bundled in a continuous length direction to form a linear reinforcing element. For example, it may be arranged at regular intervals inside the main body (111) similar to a tire cord, or inserted with orientation in a specific direction (circumferential direction, radial direction / inclined direction). The fiber reinforcement (FR) can improve shape recovery force and fracture resistance during repeated compressive deformation of the buffer part (111a) and / or connecting part (111b) by providing tensile support performance according to the load direction within the rubber material main body (111).

[0087] The fiber reinforcement (FR) in the form of the above reinforcing fabric means that a plurality of fiber bundles are woven or knitted in the warp and weft directions to form a sheet or mesh structure. This fiber reinforcement (FR) can be embedded or laminated and inserted inside the main body (111) made of rubber material to disperse tensile force or shear stress generated when the main body (111) is deformed and to suppress the progression of tearing.

[0088] The fiber reinforcement (FR) in the form of the above reinforcing cloth can be stacked in multiple plies and placed in each area of ​​the main body (111). In the present invention, "ply" may refer to the number of layers in which the fiber reinforcement (FR) in the form of the reinforcing cloth is stacked in sheet units.

[0089] A dome structure according to another embodiment of the present invention may be formed by including a composite rubber sheet in which a short fiber-shaped fiber reinforcement is dispersed in a rubber raw material.

[0090] The above-mentioned short-fiber type fiber reinforcement forms a composite rubber sheet in a dispersed state mixed with the rubber raw material. Accordingly, unlike a structure in which continuous reinforcing fabrics are laminated, the composite rubber sheet has a structure in which the fiber reinforcement is discontinuously dispersed and molded integrally with the rubber.

[0091] The above composite rubber sheet can be molded inside a mold in a state where multiple layers are laminated, and is configured so that impact is gradually dispersed and absorbed in the thickness direction of the dome structure by this laminated structure.

[0092] In particular, fiber reinforcement in the form of short fibers can contribute to mitigating the concentration of external impacts in specific directions and inhibiting the progression of local deformation or cracks as it is dispersed in random directions within the rubber.

[0093] In addition, a pure rubber sheet that does not contain fiber reinforcement may be laminated and formed on the outer surface of the main body, and the pure rubber sheet may be formed with a thickness range of 5 mm to 10 mm, thereby primarily absorbing the impact through elastic deformation in the area where the external impact first comes into contact, and preventing the composite rubber sheet formed inside from being damaged or the fiber reinforcement from being exposed to the outside.

[0094] According to this configuration, the dome structure according to the present embodiment has a higher degree of shape freedom and excellent moldability compared to an embodiment in which fiber reinforcement in the form of a reinforcing cloth is continuously stacked, and has low dependence on the direction of impact, so it can provide stable cushioning performance even under various external impact conditions.

[0095] Since the above buffer section (111a) and connection section (111b) are areas where relatively large elastic deformation is repeated due to external impact, it is desirable to apply a fiber reinforcement (FR) in the form of a reinforcing cloth in 2 to 4 ply to secure fracture resistance while preventing excessive increase in stiffness.

[0096] The above flange portion (111c) performs a fixing and supporting function and load transfer is concentrated, so it is preferable to apply 4 to 6 plies to increase shape stability and fastening reliability.

[0097] The fiber reinforcement (FR) above preferably comprises fibers constituting the reinforcing fabric or reinforcing cord having a tensile strength of 10 kg to 25 kg and a fineness of 1500 D to 2500 D.

[0098] The above tensile strength and fineness refer to the physical properties of the fibers or yarns themselves that constitute the fiber reinforcement (FR) in the form of a reinforcing fabric or reinforcing cord. That is, the above tensile strength and fineness do not refer to the physical properties of the entire fiber reinforcement (FR), but rather limit the range of physical properties of the warp and weft of the fiber reinforcement (FR) in the form of a reinforcing fabric, or the basic unit fibers that form the fiber reinforcement (FR) in the form of a reinforcing cord.

[0100] The above main body (111) can predict a deformation path and deformation pattern according to the inclination of the connecting part (111b). In addition, the degree of shock absorption may vary depending on the inclination of the connecting part (111b), and the durability of the main body (111) may vary.

[0101] The inclination angle (θ) of the above-mentioned connecting part (111b) is defined as the acute angle formed when the center plane (Cen) of the flange part (111c) and the center plane (Cen) of the representative straight section of the connecting part (111b), excluding the second curved part (C2), are each extended and intersected, as shown in FIG. 8.

[0102] The inclination angle (θ) of the above-mentioned connecting part (111b) preferably has a range of 40° to 85° and preferably has a range of 50° to 75°.

[0103] If the angle of inclination (θ) of the above-mentioned connecting part (111b) is too gentle, less than 40°, the deformation caused by external impact may become excessively large, causing deformation of the main body (111) and rapid bottoming out. As a result, there is a possibility that the transmission of impact to the object to be protected will increase, or that permanent deformation and fatigue deterioration will increase due to repeated impacts.

[0104] Conversely, if the angle of inclination (θ) of the connection part (111b) exceeds 85°, the rigidity of the connection part (111b) increases and the amount of deformation decreases significantly, making it easier to transfer impact energy to the object to be protected in the form of a reaction force rather than dissipating it as deformation. In addition, stress concentration increases near the first curved part (C1) and the second curved part (C2), etc., which can lead to increased problems such as cracking and tearing.

[0106] As shown in FIG. 9, the maximum diameter (D1) of the buffer portion (111a) is formed in a range of 0.65 to 0.85 times the maximum diameter (D2) of the connecting portion (111b), so that when an external impact is applied, the buffer portion (111a) disperses and absorbs the impact over an area, and the connecting portion (111b) gradually deforms without excessive stress concentration, thereby allowing the impact energy to be dissipated step by step.

[0107] If the above ratio is less than 0.65, the shock may be concentrated locally and the cushioning performance may be reduced, and if it exceeds 0.85, the structural stability and durability may be reduced due to excessive sagging of the buffer part (111a). The above range is a desirable range for simultaneously securing cushioning effect and structural reliability.

[0109] The height (h) of the buffer portion (111a) refers to the distance from the center plane (Cen) of the flange portion (111c) to the point where the buffer portion (111a) protrudes outward to the maximum extent. (However, in the embodiment illustrated in the drawings of the present invention, as the upper part of the buffer portion (111a) is formed flat, the height (h) of the buffer portion (111a) is expressed as the distance from the center plane (Cen) of the flange portion (111c) to the upper center plane (Cen) of the buffer portion (111a).)

[0110] Meanwhile, the height (h) of the buffer section (111a) is a value geometrically determined by the maximum diameter (D1) of the buffer section (111a), the maximum diameter (D2) of the connecting section (111b), and the inclination angle (θ) of the connecting section (111b), and in the present invention, this is not limited to a separate numerical range.

[0111] That is, the height (h) of the buffer portion (111a) is a dependent shape element that is automatically determined as the diameter ratio and inclination angle are set, and the degree of protrusion of the buffer portion (111a) for absorbing external shock is sufficiently disclosed through the drawing.

[0113] Shock protection device (1000)

[0114] FIG. 10 is a schematic diagram showing a shock-prevention device (1000) including a cushioning unit (100) comprising one dome structure (110) and a binding member (200) for fixing the cushioning unit (100) to a protective object (Op), and FIG. 11 is a schematic diagram showing an embodiment of the binding member (200) shown in FIG. 10.

[0116] The shock-prevention device (1000) of the present invention is used to protect a protective object (Op) having an outer surface from external shock.

[0117] The shock-prevention device (1000) comprises a cushioning unit (100) including at least one dome structure (110) of the present invention, and a binding member (200) as a binding means for fixing the cushioning unit (100) to the protection object (Op).

[0118] The above buffer unit (100) is installed on the surface of the protective object (Op) such that the buffer portion (111a) of the dome structure (110) protrudes outward, as shown in FIG. 10.

[0119] The above binding member (200) is configured to be inserted into the fastening hole (Ho) of the dome structure (110) and to secure the dome structure (110) to the outer surface of the protective object (Op) in a binding manner.

[0120] The above binding member (200) may be in the form of a chain or rope as shown in FIG. 11, or may be a wire or fiber strap, depending on the usage environment.

[0121] The above binding member (200) extends to wrap around the outer surface of the protective object (Op) and serves to maintain its position so that it does not detach when the dome structure (110) is subjected to impact.

[0123] FIG. 12 is a schematic diagram showing one embodiment of a buffer unit (100) including two or more dome structures (110), and FIG. 13 is a schematic diagram showing another embodiment of a buffer unit (100) including two or more dome structures (110).

[0124] The above buffer unit (100) may include two or more combined dome structures (110).

[0125] A buffer unit (100) according to one embodiment of the present invention may include one or more dome structures (110), and in particular, as shown in FIGS. 12 and 13, the flange portions (111c) of each dome structure (110) may be connected to each other. At this time, the buffer unit (100) may be expanded to include two or more dome structures (110), and the number of dome structures (110) may be appropriately selected according to installation conditions and required performance.

[0126] The above plurality of dome structures (110) can be implemented in various forms depending on the arrangement direction.

[0127] For example, the buffer unit (100) may be formed such that each buffer section (111a) is arranged to face the same direction as shown in FIG. 12, and the buffer sections (111a) are stacked in an overlapping shape. In this combined form, when an external impact acts mainly in the same direction, the plurality of dome structures (110) form a relatively aggregated cross-sectional rigidity, thereby improving the structural support or load-bearing capacity of the buffer unit (100).

[0128] Alternatively, the buffer unit (100) may be formed such that each buffer section (111a) is arranged to face each other as shown in FIG. 13, and is combined to form a convex shape in the front-back or up-down direction. In this combined form, regardless of which direction an external impact is applied, the buffer section (111a) and the connecting section (111b) of each dome structure (110) deform, thereby securing a relatively large deformation section, so that the shock absorption effect of the buffer unit (100) can be increased.

[0129] Meanwhile, the dome structures (110) to which the flange portions (111c) are butted together can be fixed to each other by being bound by a binding member (200) inserted through a fastening hole (Ho) formed in each flange portion (111c). That is, the binding member (200) binds a plurality of flange portions (111c) together through the fastening hole (Ho), thereby allowing the cushioning unit (100) to maintain the bonded state between the dome structures (110) even during external impact.

[0130] Accordingly, even when using the same dome structure (110), the present invention allows for the selective implementation of a strength-centered buffer unit (100) or a buffer effect-centered buffer unit (100) depending on the usage environment and required performance by selecting the arrangement direction and binding method of the dome structure (110).

[0131] FIG. 14 is a schematic diagram showing the state in which the shock-prevention device (1000) illustrated in FIG. 10 is applied even when the protected object (Op) is a ship.

[0132] More specifically, FIG. 14 is a diagram exemplifying that the buffer unit (100) of the present invention can be arranged and applied in various forms on the outer surface of the ship, for example, the side of the ship or the area where docking takes place.

[0133] As described above, the buffer unit (100) can be applied in a continuous arrangement, partial arrangement, or selective arrangement form depending on the shape and collision direction of the vessel, thereby effectively mitigating the impact generated when the vessel collides with an external structure.

[0134] The present invention has been described in more detail above through drawings and embodiments. However, the configurations described in the drawings or embodiments described in this specification are merely one embodiment of the present invention and do not represent all technical concepts of the present invention; therefore, it should be understood that various equivalents and modifications that can replace them may exist at the time of filing this application. Explanation of the symbols

[0136] 1000: Shock protection device 100: Buffer unit 110: Dome structure 111: Main body 111a: Buffer section 111b: Connection 111c: Flange section 200: Binding member C1: First curved surface C2: Second curved surface Ho: Fastener FR: Fiber reinforcement Cen: Center plane Po: Pocket section Op: Protected object

Claims

Claim 1 delete Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 delete Claim 7 delete Claim 8 delete Claim 9 delete Claim 10 delete Claim 11 An impact protection device for protecting a protective object having an outer surface from external impact, comprising: a cushioning unit including at least one dome structure; and a binding member for fixing the cushioning unit to the protective object; wherein the cushioning unit is installed on the surface of the protective object such that a buffer portion of the dome structure protrudes, and the dome structure includes a dome-shaped main body including a rubber material, and the main body includes: a flange portion extended along the lower circumference direction; a circular buffer portion protruding upward from the flange portion to which external impact is directly applied; and a connecting portion connecting the flange portion and the buffer portion, and extending from the buffer portion to the flange portion; wherein the main body further includes a fiber reinforcement in the form of a reinforcing fabric or a reinforcing cord, and the inclination angle (θ) of the connecting portion is in the range of 40° to 85°, and the maximum diameter (D1) of the buffer portion is 0.65 to 0.85 times the maximum diameter (D2) of the connecting portion, and the main body includes a first curved surface portion where the buffer portion and the connecting portion meet; An impact prevention device comprising: a first curved surface where the flange portion and the connecting portion meet; wherein the first curved surface has a radius of curvature (R1) of 70 mm to 150 mm and the second curved surface has a radius of curvature (R2) of 20 mm to 60 mm, and wherein the main body absorbs the impact by deforming the buffer portion and the connecting portion when an external impact is applied. Claim 12 In claim 11, the flange portion of the dome structure comprises a fastening hole into which a binding member is inserted to connect and fix the protective object and the cushioning unit to each other, thereby forming an impact protection device. Claim 13 In claim 11, the buffer unit comprises two or more combined dome structures, and the dome structures are shock-absorbing devices in which the flange portions are joined together. Claim 14 In claim 11, the fiber reinforcement comprises a fiber having a tensile strength of 10 kg to 25 kg and a fineness in the range of 1500 D to 2500 D, forming an impact-resistant device. Claim 15 In claim 14, the shock-prevention device wherein the main body comprises a fiber reinforcement in the form of a reinforcing cloth, the fiber reinforcement is laminated in the buffer portion and the connecting portion, respectively, and the 4-ply to 6-ply fiber reinforcement is laminated in the flange portion. Claim 16 An impact-absorbing device according to claim 14, wherein the main body comprises a composite rubber sheet in which a short-fiber type fiber reinforcement is dispersed in a rubber raw material, and the composite rubber sheet is formed by laminating multiple layers, and a pure rubber sheet not containing fiber reinforcement is formed on the outer surface of the main body with a thickness of 5 mm to 10 mm. Claim 17 In claim 11, the shock-absorbing device wherein the thickness (t) of the connection portion is 0.5% to 10% of the maximum diameter (D1) of the buffer portion.

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