JP3154223B2 - Gliding board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ski used when a player slides on snow or water,
It relates to a sliding board such as a snowboard or a surf board.

[0002]

2. Description of the Related Art Skis and snowboards that slide on snow, or surf boards that slide on water,
A structure in which an exterior material such as a decorative board is integrated on the entire surface of a plate-shaped core material having appropriate elasticity and strength as a sliding board is generally used. The core material of this type of sliding plate is usually a molded product of glass fiber reinforced plastic or silicon carbide fiber, a plywood product, or a laminated product of reinforced plastic and plywood, and the elasticity and strength of these core materials are Determine elasticity and strength almost.

[0003] The exterior material integrated with the core material includes a molding resin fixed to the upper surface of the core material, a resin upper board, a molding resin fixed to the lower surface of the core material, and a resin. There are a sliding surface board made of resin and a side plate made of resin fixed to the side surface of the core material. In skis and snowboards (or surfboards), metal edges are integrated with the edge portions at both ends of the running surface board as necessary.

[0004]

The elasticity and strength of the core material, which substantially determines the elasticity and strength of the sliding board, are designed according to the type and use of the sliding board. In the core material of plywood, the strength is proportional to the thickness and the weight, and when the strength is increased, the elasticity is deteriorated. Therefore, there is a problem that it is difficult to improve the performance of both the elasticity and the strength.

[0005] The core material of the sliding board is on snow or
It is designed to absorb vibration received from the snow surface or water surface when sliding on the water, and to have effective elasticity to suppress the vibration and impact force applied to the player's feet on the sliding board, Many are designed to have excellent elasticity against vibration, torsion, and bending due to relatively large unevenness on the snow surface or the water surface. However, the core material is inferior in elasticity to absorb microvibration caused by relatively small irregularities on the snow surface or the water surface, which makes it difficult to improve the sliding feeling given to a player at the time of running, especially at a high speed. I was

SUMMARY OF THE INVENTION An object of the present invention is to provide a high performance sliding board which is excellent in elasticity against large irregularities on the snow surface or water surface and elasticity against small irregularities.

[0007]

According to the present invention, a resin foam material is applied to the entire surface of a corrugated steel sheet having ridges and valleys continuous in the sliding direction, and the valley of the corrugated steel sheet is filled to cover the ridge, and the appearance is substantially flat. made as to cover the core material which is integrally formed by heating treatment as the resin foam is hardened is cooled with corrugated steel with foam, the performance of the elasticity and strength of the core material on the entire surface of the core member Spoil
It is characterized by having an exterior material fixed with no structure .

Here, the corrugated steel sheet of the core material is a flat steel sheet or a perforated perforated spring steel sheet or a net-like spring steel formed into a corrugated form, which is heat-treated with a resin foam material and integrally formed. Then, at the time of cooling during this heat forming, the closer to the corrugated steel sheet in the resin foam material, the faster the cooling due to the heat conduction specific to the metal of the corrugated steel sheet, and finer bubbles remain, resulting in the corrugated surface of the corrugated steel sheet. A plurality of layers are formed along the size of the air bubbles, and the air bubbles increase the vibration absorbing effect on small irregularities on the snow surface or the water surface.

Further, in the present invention, a core material having a structure in which a woven fabric of heat-resistant fiber is stretched above and below the corrugated steel sheet and a resin foam material is integrally formed on the entire surface of the corrugated steel sheet so as to embed the woven cloth. It may be.

Further, in the present invention, the number of corrugated steel sheets in the core material is not limited to one, and a plurality of corrugated steel sheets may be arranged in parallel on one core material depending on the type of snow or water gliding board. May be.

Further, in the present invention, the thickness, which is the height between the adjacent peaks and valleys of the corrugated steel sheet of the core material, is increased from the substantially central part in the length direction where the peaks and valleys of the corrugated steel sheet are continuous. If the shape of the corrugated steel sheet is set so as to become smaller toward both ends, the core material using the corrugated steel sheet is suitable for a sliding board.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. Note that the same or corresponding parts are denoted by the same reference symbols throughout the drawings to avoid redundant description.

The snowboard 1 of the embodiment shown in FIGS. 1A to 1C is, for example, a snowboard. If the length direction which is the sliding direction of the snowboard 1 is the X direction, the width direction is the Y direction, and the thickness direction is the Z direction, the snowboard 1 is long in the X direction where the peaks and valleys are continuous in the X direction. Core 2 having a structure in which a resin foam material 5 is integrally formed on the entire surface of a long corrugated steel sheet 4;
Is composed of an exterior material 3 integrally formed over the entire surface of the device.

The exterior material 3 is, for example, a molding resin 6 fixed on the upper surface and both side surfaces of the core material 2 and a resin upper board 7 fixed thereon. Molded resin 8, a resin sliding surface board 9 fixed to the lower surface thereof, and a metal edge 10. This exterior material 3 is shown in FIG.
The structure is not limited to the example, and any structure may be used as long as it does not impair the elasticity and strength performance of the core 2 described later.

The corrugated steel plate 4 of the core 2 is formed by, for example, shaping a flat spring steel plate as shown in FIG.
The resin foam material 5 integrally formed with the corrugated steel sheet 4 is an elastic foam material such as a urethane foam material or a polyurethane foam material, and fills the valleys of the corrugated steel sheet 4 and covers the crests, and has a flat appearance. It is molded so that

The molding of the resin foam material 5 in the core material 2 may be performed by the following general molding method. A molding chamber (not shown) having the same size as the outer size of the core material 2 is provided, and the corrugated steel plate 4 is held in a hollow state in the molding chamber, and a fixed amount of the undiluted resin solution of the resin foam material 5 is injected into the molding chamber. . The stock resin solution is, for example, a urethane resin base material and a curing agent. The base material and the curing agent are supplied to the molding chamber from different routes, and the mixed resin stock solution is injected into the molding chamber before the molding chamber. The fixed amount of the resin stock solution injected into the molding chamber is maintained at a predetermined temperature (200 to 2).
(50 degrees), foamed and expanded with time, filled in the molding chamber, cooled and hardened by the corrugated steel plate 4 and the mold while the foaming progressed, and a flat core material 2 is molded.

As described above, when the resin foam 5 is heat-treated and integrally formed on the corrugated steel sheet 4, the resin foam 5 is embedded in the resin foam 5 as shown in FIG.
A bubble layer S in which bubbles m are continuous as shown in the dot (b) and the circle is formed. In other words, when the resin foam material 5 is filled by filling the valleys of the corrugated steel sheet 4 and covering the crests and then cooled, the portion of the resin foam material 5 closer to the corrugated steel sheet 4 having good thermal conductivity becomes closer to the corrugated steel sheet 4. In this part, fine air bubbles m remain in these portions, and large air bubbles m remain in portions farther away from the corrugated steel sheet 4. In addition, since the surface layer of the resin foam material 5 is also quickly cooled by the mold, finer bubbles m remain in this surface layer. As a result, in the cured resin foam material 5, a bubble layer S in which bubbles m of substantially the same size continue along the corrugated surface of the corrugated steel sheet 4 is formed in multiple layers in a substantially waveform.

Due to the presence of the multi-layered foam layer S in the resin foam material 5, the local elasticity of the resin foam material 5 is different, and even if a small external impact force is applied to the core material 2 by dispersing the elastic distribution. Finely dispersed and absorbed. Actually, when the sliding performance on snow of the snow sliding board 1 in which the exterior material 3 was integrated with the core material 2 was tested, slight vibration due to relatively small unevenness of the snow surface caused the resin foam material 5 of the core material 2 to have the bubble layer S. It has been found that it is effectively absorbed by the dispersing action of the rubber and effectively prevented from being transmitted to the skier's foot. Further, it is known that the stress due to the vibration, torsion, and bending due to the relatively large unevenness of the snow surface is dispersed and absorbed mainly by the elasticity of the corrugated steel sheet 4, and the sliding property similar to the conventional product is secured. Furthermore,
The corrugated steel plate 4 secures a sufficiently high strength of the core material 2 even when the core material 2 is mostly made of the resin foam material 5.

Further, the corrugated steel sheet 4 in which peaks and valleys are continuous in the X direction, which is the sliding direction of the snow slide board 1, and the bubble layer S along the corrugated surface of the corrugated steel sheet 4 have the effect of utilizing the applied vibration as a propulsive force in the X direction. It also provides skiers with better gliding properties. Furthermore, the corrugated steel plate 4 waving in the Z direction of the thickness of the snowboard 1 is excellent in the effect of directly transmitting the force of the skier's foot applied to the upper surface of the snowboard 1 to the running surface, and the skier's powerful sliding performance is improved. Encourage.

In the above experiment, the corrugated steel plate 4 of the core 2 was 1 m long.
This is a result of using a spring steel having a thickness of about m and making the appearance size of the sliding plate on snow 1 equal to that of a conventional product. In this case, the bulk of the core material 2 is occupied by the lightweight resin foam material 5, so that the weight of the corrugated steel plate 4 does not increase the weight of the snow sliding plate 1. By selecting, the overall weight can be reduced.

Next, other embodiments of the present invention will be described with reference to FIGS.

The core 2 shown in FIG. 3 has a large number of through holes 12 formed partially in the corrugated steel plate 4. Through hole 12
Is a perforation as shown in FIG. 4 (a) or FIG. 4 (b)
This is a perforation with a rib 13 as shown in FIG. When the resin foam material 5 is integrally formed on the corrugated steel sheet 4 having such a large number of through holes 12, the resin foam material 5 is filled in the through holes 12, and the integration of the corrugated steel sheet 4 and the resin foam material 5 is further strengthened. Becomes The integration of the corrugated steel sheet 4 and the resin foam 5 is shown in FIG.
The through holes 12 in FIG. 4B are even stronger than those in FIG. 4A because the ribs 13 bite into the resin foam material 5.

Further, by forming the through-holes 12 in the corrugated steel plate 4, the weight of the corrugated steel plate 4 is reduced, and accordingly, the weight of the sliding board on snow can be reduced. Although not shown, the corrugated steel sheet 4
In this case, a mesh plate made of spring steel may be used. In this case as well, the integration with the resin foam material 5 is strengthened, and the weight can be reduced.

The core material 2 shown in FIGS. 5 and 6 is made of a resin such that the corrugated steel sheet 4 is sandwiched between two upper and lower heat-resistant fiber woven cloths 14, 14 and the woven cloths 14, 14 are embedded. The foamed material 5 is molded. The woven fabric 14 is a nonwoven fabric of glass fiber or carbon fiber or the like, which is stretched along the tops of the upper and lower peaks of the corrugated steel plate 4, and the resin foam material 5 is integrally formed with the corrugated steel plate 4. .

By additionally embedding the woven fabrics 14 in the resin foam material 5 of the core 2, the woven fabrics 14
The elasticity against bending in the direction and twisting in the Y direction is enhanced, and the woven fabrics 14 promote the stress dispersion effect of the bubble layer S, thereby improving the sliding property of the snow sliding plate 1. . Further, the woven fabrics 14 also have an effect of making the integration of the corrugated steel sheet 4 and the resin foam material 5 stronger.

The corrugated steel sheet 4 used for the core material 2 of the snow sliding board 1 in each of the above embodiments is not limited to one sheet, and a plurality of sheets having the same shape can be arranged in parallel. An embodiment in which a plurality of the corrugated steel plates 4 are used will be described with reference to a ski slide plate 1 'of a ski in FIGS.

The sliding board 1 'on snow shown in FIG. 7 is a ski that is thinner than a snowboard. For example, four corrugated steel plates 4,... As shown in FIG. It has a core material 2 formed integrally. The four parallel corrugated steel plates 4 have the same size and shape, respectively, and are divided into four pieces to avoid an increase in the weight of the elongated ski. Also, by arranging four elongated corrugated steel plates 4,... In parallel in the length direction of the ski at an interval, the elastic effect of each corrugated steel plate 4,. Glidability is ensured.

As shown in FIGS. 7B to 7D,
It is effective for the ski to set the wave shape of each corrugated steel plate 4 as follows. That is, the ski is
As shown in FIG. 7C, the height of the peaks and valleys at the substantially central portion in the length direction of the corrugated steel plate 4 is shown in FIG. set the thickness D ₁ to the maximum, leaving the installation of the boot mounting bracket here to be facilitated. Also, as shown in FIGS. 7B and 7D, the thicknesses D ₂ and D ₃ of the corrugated steel sheet 4 at the front end and the rear end are gradually reduced from the thickness D ₁ at the center, and finally both ends. Make the part flat. Corrugated steel sheet 4 having such changed thickness
The core material 2 in which the resin foam material 5 is integrated is partially different in strength and elasticity in the longitudinal direction, and is suitable as a core material of an elongated ski.

Although the above description has been made with reference to skis and snowboards, the same applies to surfboards and similar sliding boards.

[0030]

According to the sliding plate of the present invention, a bubble layer is formed in the resin foam material of the core material along the wavefront of the corrugated steel sheet according to the size of the bubbles. , Which effectively disperses and absorbs fine vibrations applied to the core material, so that it absorbs vibrations due to small irregularities on the snow surface or water surface to improve gliding properties, especially high-speed gliding on high-performance snow or A hydroplane board can be provided. Further, since most of the volume of the core material is a lightweight and inexpensive resin foam material, the weight and cost of the entire sliding plate can be reduced.

According to the sliding plate of the present invention, the integration of the corrugated steel plate of the core material and the resin foam material is reinforced by the woven fabric of heat-resistant fiber, and the woven fabric disperses and absorbs vibration applied to the core material. Therefore, it is possible to provide a high-performance snow or water sliding board with higher elasticity and strength.

According to the third aspect of the present invention, the resin foam material penetrates into the perforations and meshes of the corrugated steel plate as the core material, so that the resin foam material can be more firmly integrated into the corrugated steel plate. It is possible to provide a core material having a stable shape, a snowboard or a hydroplane board.

According to the fourth aspect of the present invention, the corrugated steel sheet of the core material is divided into a plurality of parts, so that the weight can be reduced and it is possible to arbitrarily correspond to a snowy sliding board having various widths. A core material having excellent versatility can be provided.

[Brief description of the drawings]

FIG. 1 (a) is a plan view of a snowboard (snowboard) showing a first embodiment of the present invention, and FIG. 1 (b) is a view A of FIG. 1 (a).
FIG. 1C is a partial enlarged cross-sectional view taken along line A of FIG.
Cross section of line

FIG. 2 is a partial perspective view of the snow skiing plate of FIG.

FIG. 3 is a partial perspective view showing another embodiment of the core material in the snow skiing board of FIG. 1, including a partly omitted portion.

4 (a) and 4 (b) are partially enlarged sectional views showing two embodiments of the core material of FIG. 3;

FIG. 5 is a partial cross-sectional view of a core material according to a second embodiment of the present invention.

6 is a partial perspective view of the core shown in FIG.

FIG. 7 (a) is a partial plan view of a snow ski (ski board) showing a third embodiment of the present invention, and (b), (c) and (d).
7 is a partially enlarged cross-sectional view of the core material of the snowboard of FIG. 7A.

FIG. 8 is a partial perspective view of the snow skiing board of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1 'Snow gliding board 2 Core material 4 Corrugated steel plate 5 Resin foam 14 Woven cloth

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A63C 5/12 B63B 35/79

Claims (4)

(57) [Claims] 1. A resin foam material is coated on the entire surface of a corrugated steel sheet having ridges and valleys continuous in the sliding direction so as to fill the valleys of the corrugated steel sheet and cover the ridges so that the appearance becomes substantially flat. The core material was heat-treated so that the foamed material was cooled and hardened by the corrugated steel sheet while foaming, and was integrally molded. The core material was fixed on the entire surface of the core material with a structure that would not impair the elasticity and strength of the core material. A sliding board comprising an exterior material. 2. A corrugated steel sheet is stretched over and under the corrugated steel sheet, and a core material formed by integrally molding a resin foam material over the entire surface of the corrugated steel sheet so as to embed the woven cloth is provided. The sliding board according to claim 1, wherein 3. The sliding board according to claim 1, wherein the corrugated steel sheet is a perforated board having perforations or meshes. 4. The sliding board according to claim 1, wherein the corrugated steel sheets in the core material are a plurality of parallel sheets.