A skateboard deck with an internally reinforced structure

Abstract

This invention discloses a skateboard deck with an internally reinforced structure, comprising a core board and a substrate. The core board is formed by hot pressing multiple thin sheet materials together. An internally reinforced structure is encapsulated within the core board and sealed on its lower surface by the substrate. The internally reinforced structure includes two symmetrically arranged springs, each a long strip-shaped thin sheet formed from spring steel, arranged along the length of the core board, and having a variable cross-section structure in the area corresponding to the front and rear wheels. Several arc-shaped ribs of equal width to the variable cross-section structure are also formed on the upper surface of the springs at the middle position of the cross-section structure as reinforcement. The substrate is a fiberglass board, and the interface between the substrate and the core board is sealed and filled with polyurethane resin. This invention, using resin-impregnated bamboo veneer and fiberglass board, improves the strength, stability, and elasticity of the skateboard deck while reducing material costs, thus meeting the stress requirements of the skateboard.

Description

Technical Field

[0001] This invention relates to the field of sports equipment technology, specifically to a skateboard surface with an internally reinforced structure. Background Art

[0002] With the increasing popularity of adventure, skateboarding has become one of the most popular sports in the world. A skateboard, an essential piece of equipment in skateboarding, is a road-riding tool mainly composed of a deck, frame, cushioning pad (buffer), and wheels. The deck, made of pressed wood, is where the skater stands and controls the board. When using the skateboard, the user places both feet on the top surface of the deck to propel the skateboard across the road. While gliding, one foot is placed at the front of the deck, and the other foot pushes off the ground to generate speed, propelling the skateboard forward.

[0003] Generally speaking, the damage to the skateboard during normal gliding is minimal and almost negligible. However, as a street sport that combines performance and competition, skateboarders often use jumps, flips, spins, gliding, and push-offs to perform tricks. A significant portion of these tricks (such as continuous jumps during gliding and landings in a halfpipe) can cause strong stress impacts on the skateboard surface. These strong stress impacts can sometimes even exceed the user's weight in an instant. To ensure the performance of the skateboard, the skateboard surface must have good structural strength, elasticity, and structural stability.

[0004] To meet the aforementioned usage requirements, traditional skateboard decks are made of Canadian maple plywood, which requires a high level of precision in the pressing process. Furthermore, with the depletion of related timber resources and import restrictions, raw materials are becoming increasingly expensive, leading to higher manufacturing costs. Existing processes have also incorporated alternative materials, such as bamboo, fiberglass, resin, and alloys, to create skateboard bodies. However, each of these alternatives has its own limitations.

[0005] Among them, resin materials have poor weather resistance and corrosion resistance, and their strength will decrease after a period of use; alloy materials have poor elasticity and recovery performance; while bamboo and wood with glass fiber structure is a relatively excellent low-cost alternative material, but its drawback is that its structural strength is slightly worse. Under continuous strong stress impact, stress damage is likely to occur on the board surface, leading to board surface deformation and failure, and a shorter service life. Summary of the Invention

[0006] The technical problem solved by the present invention is to provide a skateboard surface with an internally reinforced structure, which can be used to overcome the defects in the above-mentioned technical background.

[0007] The technical problem solved by this invention is achieved by the following technical solution:

[0008] A skateboard surface with an internal reinforcement structure includes a core board and a substrate. The core board is formed by stacking multiple thin sheet materials and hot-pressing them together with an adhesive. After the sheet material is cured and formed, it is cut and trimmed. The core board contains an internal reinforcement structure and is sealed on its lower surface by the substrate.

[0009] The internal reinforcement structure includes two symmetrically arranged spring sheets, which are long strip-shaped thin sheet structures formed by stamping spring steel sheets on both sides of the slide plate. The spring sheets are arranged along the length of the core plate and have a variable cross-section structure in the area between the front and rear wheels. The thickness of the variable cross-section structure increases continuously from the middle of the plate to both sides, and the width decreases continuously from the middle of the plate to both sides. The upper surface of the spring sheets at the middle position of the strain cross-section structure also has several arc-shaped ribs with the same width as the variable cross-section structure as a reinforcement structure.

[0010] The substrate is a fiberglass board, and the interface between the substrate and the core board is sealed and filled with polyurethane resin.

[0011] As a further limitation, the type of skateboard using the aforementioned skateboard deck is a double kickboard, a small fishboard, a longboard, or a danceboard.

[0012] As a further limitation, the thin sheet material constituting the core board is preferably made of resin-impregnated bamboo sheet or maple sheet; the core board is formed by stacking multiple thin sheet materials with the same thickness, the thickness of a single layer is 1.5 to 3.0 mm, and the number of layers is 5 to 7.

[0013] As a further limitation, the spring is made of silicon-manganese spring steel or silicon-chromium spring steel, and the thickness of the spring in the variable cross-section structure varies from 2 to 5 mm; the width varies from 18 to 25 mm.

[0014] As a further limitation, the variable cross-section structure has several spaced outward protrusions on both sides in the width direction.

[0015] As a further limitation, after the core board is formed, a blind groove matching the inner reinforcement structure is milled on its lower surface, and the inner reinforcement structure is assembled into the blind groove after adhesive application.

[0016] As a further definition, the thin sheet material constituting the core board includes an upper panel, a lower panel, and an intermediate panel. The upper panel and the intermediate panel are stacked and preheat-pressed to obtain an intermediate panel material. A blind groove matching the inner reinforcement structure is milled on the lower surface of the formed intermediate panel material. The inner reinforcement structure is assembled into the blind groove after adhesive application. Then, the lower panel is sealed on the lower surface and hot-pressed. The upper panel and the lower panel are 1 to 2 layers of thin sheet material.

[0017] As a further limitation, the spring has mounting portions formed at both ends that protrude downwards from the skateboard surface, and the skateboard surface is assembled and connected to the skateboard bracket through the mounting portions; the skateboard bracket is an aircraft bridge bracket, and ear plates extend from both sides of the aircraft bridge bracket and are assembled and connected to the mounting portions through the ear plates.

[0018] As a further limitation, a wear-resistant layer is formed on the lower surface of the substrate, the wear-resistant layer being a Kevlar fiber layer or a carbon fiber layer.

[0019] As a further limitation, the skateboard surface is further formed with a layer of maple wood sheet as a closed panel on the surface of the core board, and the closed panel is further formed with a decorative layer, which is a patterned sandpaper layer, and the decorative panel is attached to the surface of the closed panel by an adhesive layer.

[0020] Beneficial effects: The skateboard deck with an internal reinforcement structure of the present invention provides a lightweight skateboard deck with high load-bearing capacity and excellent handling. By setting the internal reinforcement structure and encapsulating the internal reinforcement structure in the core board, the structural strength and impact resistance of the skateboard deck are improved. The outer encapsulation of the substrate structure can improve the structural stability of the skateboard deck and improve the wear resistance of the bottom surface of the skateboard deck. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the plate structure of a preferred embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the reed structure of a preferred embodiment of the present invention.

[0024] Figure 4 for Figure 3 The image shows a side view of the reed.

[0025] The components are: 1. Plate body; 2. Spring; 3. Core board; 4. Wear-resistant layer; 5. Slide board bracket assembly hole; 6. Assembly part; 7. Finishing layer; 8. Sealing panel; 9. Thin plate material; 10. Substrate; 11. Spring strip; 12. Arc-shaped rib; 13. Outer protrusion. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below with reference to specific illustrations.

[0027] In the following embodiments, those skilled in the art will understand that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have a meaning consistent with their meaning in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined as herein.

[0028] See Figures 1-4 A preferred embodiment of a skateboard deck with an internally reinforced structure. In this embodiment, the skateboard deck corresponds to a skateboard type called a dance board. Its board body 1 has typical dance board characteristics, namely, it has a relatively wide middle board body. The two ends of the middle board body are connected to inwardly tapered end boards. The width of the end boards is relatively narrow, about 0.7 times the width of the middle board body. The end boards are provided with skateboard bracket mounting holes 5 for assembly and connection with the skateboard bracket. At the same time, an upwardly folded edge is formed on the outer side edge of the end boards.

[0029] In this embodiment, the skateboard board 1 is a composite structure of bamboo and fiberglass, with bamboo as the core material. During preparation, the skateboard board surface is first prepared by impregnating bamboo sheets to obtain a uniformly thick sheet 9, with the thickness of the sheet 9 controlled to be 2±0.2mm. Six layers of sheet 9 are then stacked and hot-pressed to obtain a core board blank. The hot-pressed core board blank is then trimmed to obtain the core board 3. A blind groove matching the size, shape, and depth of the spring 2 is milled into the bottom surface of the formed core board 3. Then, the surface of the spring 2 is glued and pressed into the blind groove to complete the assembly of the spring 2, resulting in the assembled core board 3.

[0030] In another embodiment, the reed 2 has a different assembly method. Under this assembly method, the thin plate-shaped material 9 that makes up the core board 3 is divided into an upper panel, a lower panel, and a middle panel. The upper panel consists of two thin plate-shaped materials 9, the middle panel consists of three thin plate-shaped materials 9, and the lower panel consists of one thin plate-shaped material 9. The upper panel and the middle panel are first stacked and then pre-pressed using a hot press. After the pre-pressing is completed, a pre-pressing plate is obtained. A blind groove matching the reed 2 is milled on the lower surface of the pre-pressing plate. Then, the surface of the reed 2 is glued and pressed into the blind groove to complete the assembly of the reed 2. After the reed 2 is assembled, the lower panel is stacked on the lower surface of the pre-pressing plate and then hot-pressed again using a hot press. After molding, the edges are trimmed to obtain the assembled core board 3. In this embodiment, as an optional technical path, the resulting skateboard surface has a better appearance, but the molding cost is also higher.

[0031] The springs 2 on the single skateboard surface are symmetrically arranged in pairs on the bottom surface of the core plate 3. The two springs 2 arranged in pairs together form the inner reinforcement structure of the skateboard surface. The structure of a single spring 2 is as follows: Figure 1 , Figure 3 As shown, where, Figure 1 The diagram shows a cross-sectional view of half of the skateboard's internal structure. The upper half of the diagram shows a bottom view of the cross-section corresponding to the spring 2 after it is installed into the core plate 3; while Figure 3 This is a top view of the reed 2.

[0032] In this embodiment, the spring 2 is a long strip-shaped thin sheet structure formed by stamping silicon manganese spring steel. It is arranged parallel to the length of the core plate 3 inside the core plate 3. The main body of the spring 2 is the spring strip 11. The spring strip 11 has a variable cross-section structure. Its thickness increases continuously from the middle of the plate to both sides, and its thickness varies from 2.5 to 4.5 mm. Its width decreases continuously from the middle of the plate to both sides, and its width varies from 18 to 25 mm.

[0033] In addition, five equally spaced protrusions 13 are provided on both sides of the spring strip 11. The protrusions 13 located on the middle side of the board are larger than those located on the sides. The arrangement of these protrusions 13 allows the spring 2 to fully bear the impact force of the board surface after being assembled in the core plate 3, and distributes it along the length of the spring strip 11. This reduces the impact of the skateboard surface on the front stress and provides better absorption performance. At the same time, the material properties of the spring 2 itself work together with the core plate 3 to buffer and absorb external stress.

[0034] On the upper surface of each protrusion 13 on the spring 2, there is an arc-shaped rib 12 with the same width as the corresponding protrusion 13. The arc-shaped rib 12 formed on the surface of the protrusion 13 can reduce the deformation of the spring strip 11 when the core plate 3 is subjected to external force impact, and make the core plate 3 have better toughness, reduce the probability of core plate 3 deformation, and improve the ultimate compressive strength and fatigue strength of the core plate 3.

[0035] The spring 2 is also connected to the two sides of the spring strip 11 with the assembly part 6. The assembly part 6 is correspondingly set at the position of the mounting hole 5 of the skateboard bracket on both sides of the core plate 3. The plane of the assembly part 6 is flush with the spring strip 11. The lower part of the assembly part 6 has an assembly plate that extends out of the skateboard surface. The assembly plate is attached to the surface of the wear-resistant layer 4. The skateboard surface is connected to the skateboard bracket through the assembly plate. The corresponding skateboard bracket is an aircraft bridge bracket with side ears on both sides. The aircraft bridge bracket is threadedly connected to the assembly plate at the corresponding position of the side ears. After the assembly is completed, the aircraft bridge bracket and the assembly part 6 are fixedly assembled by inserting threaded fasteners at the mounting hole 5 of the skateboard bracket.

[0036] In another embodiment, the assembly plate extending from the lower part of the assembly part 6 onto the skateboard surface is a detachable assembly structure. It is inserted into the protrusion of the assembly part 6 through a slot, and then fastened with a threaded component after insertion to achieve the assembly connection. This assembly part 6 structure makes it easy for users with strong hands-on skills to add functional accessories such as elastic pads to the bottom of the skateboard surface.

[0037] The core board 3, after the spring 2 assembly is completed, is sealed on its bottom surface by a substrate 10, which is a fiberglass board. The substrate 10 and the core board 3 are sealed and filled at the interface using polyurethane resin. A wear-resistant layer 4 is also formed on the bottom surface of the substrate 10. This wear-resistant layer 4, as the lower layer, can be a Kevlar fiber layer or a carbon fiber layer, and is connected to the bottom surface of the substrate 10 by a bonding method. In this embodiment, the wear-resistant layer 4 is a Kevlar fiber layer, which, in conjunction with the fiberglass material of the substrate 10, effectively reduces friction damage when the board touches the ground. On the upper surface of the core board 3 after the spring 2 assembly is completed, a 0.8mm thick maple veneer is formed by hot pressing as a sealing panel 8 to enhance the overall decorative effect of the skateboard surface, achieving a visual effect similar to a maple board surface. To highlight the user's individuality, a patterned sandpaper layer is also adhered to the surface of the sealing panel 8 as a decorative layer 7 using a peelable adhesive layer.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A skateboard surface with an internally reinforced structure, characterized in that, The skateboard surface includes a core board and a substrate. The core board is made by stacking multiple thin sheet materials and then hot-pressing them together with an adhesive to form a board body. After the board body is cured and formed, it is cut and trimmed. The core board has an encapsulated internal reinforcement structure and is sealed on the lower surface of the core board by the substrate. The internal reinforcement structure includes two symmetrically arranged spring sheets, which are long strip-shaped thin sheet structures formed by stamping spring steel sheets on both sides of the slide plate. The spring sheets are arranged along the length of the core plate and have a variable cross-section structure in the area between the front and rear wheels. The thickness of the variable cross-section structure increases continuously from the middle of the plate to both sides, and the width decreases continuously from the middle of the plate to both sides. The upper surface of the spring sheets at the middle position of the strain cross-section structure also has several arc-shaped ribs with the same width as the variable cross-section structure as a reinforcement structure. The substrate is a fiberglass board, and the interface between the substrate and the core board is sealed and filled with polyurethane resin. The variable cross-section structure has several spaced outward protrusions on both sides in the width direction; After the core board is formed, a blind groove matching the inner reinforcement structure is milled on its lower surface, and the inner reinforcement structure is assembled into the blind groove after adhesive is applied. The spring has mounting portions formed at both ends that protrude downwards from the skateboard surface. The skateboard surface is assembled and connected to the skateboard bracket through the mounting portions. The skateboard bracket is an aircraft bridge bracket. The aircraft bridge bracket has ear plates extending from both sides and is assembled and connected to the mounting portions through the ear plates.

2. The skateboard surface with an internally reinforced structure according to claim 1, characterized in that, The skateboard type using the aforementioned skateboard deck is a double kickboard, a small fishboard, a longboard, or a danceboard.

3. The skateboard surface with an internally reinforced structure according to claim 1, characterized in that, The thin sheet material that makes up the core board is a resin-impregnated bamboo sheet; the core board is formed by multiple thin sheet materials of the same thickness, with a single layer thickness of 1.5~3.0mm and a number of layers of 5~7.

4. The skateboard surface with an internally reinforced structure according to claim 1, characterized in that, The spring is made of silicon-manganese spring steel or silicon-chromium spring steel. The thickness of the spring in the variable cross-section structure varies from 2 to 5 mm, and the width varies from 18 to 25 mm.

5. The skateboard surface with an internally reinforced structure according to claim 1, characterized in that, The thin sheet material constituting the core board includes upper and lower panels and an intermediate panel. The upper panel and the intermediate panel are stacked and preheat-pressed to obtain the intermediate panel material. A blind groove matching the inner reinforcement structure is milled on the lower surface of the formed intermediate panel material. The inner reinforcement structure is assembled into the blind groove after glue application. Then, the lower surface is sealed with the lower panel and hot-pressed. The upper panel and the lower panel are 1 to 2 layers of thin sheet material.

6. The skateboard surface with an internally reinforced structure according to claim 1, characterized in that, A wear-resistant layer is formed on the lower surface of the substrate, which is a Kevlar fiber layer or a carbon fiber layer; a maple veneer is formed on the upper surface of the core board as a closed panel, and a decorative layer is formed on the surface of the closed panel, which is a patterned sandpaper layer, and the decorative layer is attached to the surface of the closed panel by an adhesive layer.

7. A skateboard, characterized in that, Includes the skateboard surface as described in any one of claims 1 to 6.

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