JPS6231952B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ski, and more particularly, to a ski formed by filling a hollow ski base frame with a foamable resin such as urethane foam, the present invention relates to a ski that prevents deformation in the thickness direction during the manufacturing process. The present invention relates to a ski in which a spacer member is provided within the ski frame body in order to prevent this and increase strength.

2. Description of the Related Art Skis in which a hollow ski base frame is filled with a foamable resin such as urethane foam are conventionally known. As reinforcement materials, FRP sheets or other metal plates are laid on the upper and lower surfaces of the ski frame frame, and the central space is filled with resin. However, in order to increase the strength, the thickness of the reinforcing material must be set large, which not only increases the weight and goes against the request for weight reduction, but also is insufficient for the ski's various properties such as bending characteristics and torsion resistance. There is a fundamental drawback that skis cannot be designed to deal with this. Therefore, in order to improve the bending characteristics especially in the torsional and lateral directions, the inventors of the present invention have braided support members that can be bent and formed, such as glass fiber vertically and wire material or synthetic resin string material horizontally. A method for manufacturing skis in which a mesh-like reinforcing material is formed into an appropriate shape, the material is loaded into the internal space of the ski frame, and a foamable resin is injected, and a reinforcing material for the foamable core material used therein has been proposed ( (Special Application No. 128048/1983).

However, in the above-mentioned ski, the reinforcing material occupies a spatially arbitrary position in the foamed resin after molding, and has excellent strength characteristics, but during molding, the reinforcing material is placed inside the conventional ski frame as described above. Because the FRP sheets and metal plates that are attached to the ski frame have been removed, there is nothing to support or reinforce the ski frame in the thickness direction, and the ski frame is damaged by the press pressure of pressing the mold from the outside when injecting the foaming resin. The problem is that the center of the upper and lower plates of the body is depressed or distorted.

The present invention has been made in view of the above-mentioned difficulties, and an object of the present invention is to provide an easy-to-manufacture ski in which a spacer member is provided at an appropriate position in the longitudinal direction of the ski frame. In skis filled with foamed resin, bendable support members such as glass fibers are braided horizontally and wire materials or synthetic resin string materials are braided horizontally, and the support members are arranged so that the glass fibers are placed at arbitrary spatial positions. A reinforcing member that is bent and supported, and a spacer member that maintains a constant distance between the upper and lower plates of the ski frame frame are arranged in a foamed resin.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the drawing, 1 is a top reinforcing member, 2 is a bottom reinforcing member, 3 is a side reinforcing member, and 4 is a sole material provided under the bottom reinforcing member 2, which collectively constitute a hollow ski frame frame. . Note that 5 is a steel edge inserted and fixed between the lower surface reinforcing material 2 and the side reinforcing material 3.

7 is a net-like reinforcing material, which is vertically braided with glass fiber roving, nylon thread, and horizontally braided with wire material, and is bent so that its cross section is approximately square-shaped, and abuts against the inner wall of the ski frame frame. It is set up like this. A spacer member 20 serves as a spacer for maintaining the thickness interval of the ski frame frame, and this spacer member 20 is composed of a holding member 22 and reinforcing ribs 24. The structure of the holding material 22 is shown in FIG. In this embodiment, glass fiber rovings 9 impregnated with epoxy resin or the like and formed into a tape shape of a predetermined width are vertically arranged in parallel at regular intervals, and a glass fiber thread 10 is sandwiched between them. , and a glass fiber roving 11 that is thinner than the glass fiber roving 9 next to the glass fiber roving 9.
It is formed by meshing. On the other hand, reinforcing rib 2
Reference numeral 4 denotes long rod-shaped bodies made of carbon graphite or the like, and three of them are fixed in parallel on the holding member 22 so as to be positioned at right angles to the holding member 22 . The spacer member 20 is inserted into the reinforcing member 7 formed in a square shape. Note that the holding material 22 is
The reinforcing ribs 24 are positioned in the thickness direction within the ski frame frame, and are not limited to the above structure, but can be made of foamed resin 8 filled in the ski frame frame.
It may be of any structure as long as it can be fixed. Moreover, the number of reinforcing ribs 24 is preferably three as described above, but it is sufficient that at least one reinforcing rib 24 is provided in the central portion. Furthermore, the shape of the reinforcing material 7 is not limited to a square shape at all. For example, as shown in FIG. 2, a spacer member 2 is formed by fixing one reinforcing rib 24 on a holding member 22 within a ski frame frame.
Further, the reinforcing material 22 is bent so that the cross-sectional shape is approximately W-shaped, and the reinforcing material 22 is loaded so that a part thereof comes into contact with the ski frame wall.
It may be filled with.

Since the present invention is constructed as described above, first, the sole material 4, lower surface reinforcing material 2, steel edge 5, and side reinforcing material 3 are set at respective predetermined positions in a mold (not shown). Then, insert the spacer member 2 into the space in which each of the above members is set from the upper surface open part.
0 and the reinforcing material 7 are appropriately loaded, the top surface reinforcing material 1 is placed on top of the reinforcing material 1, and a pressure higher than the foaming pressure of the foaming resin 8 is applied using a press or the like, and then urethane foam is formed in the space of the ski frame frame. A foamable resin 8 such as the like is filled and solidified. In addition,
Even if a pressure greater than the pressure at which the foamable resin 8 to be filled is foamed in the space of the ski frame frame body is applied by a press or the like, the spacer member 2 does not fit into the space of the ski frame frame body.
Since the ski is loaded with zero, the desired ski can be obtained without denting or distortion. Note that the resin that has passed through the mesh of the holding material 22 is
Since the reinforcing ribs 24 are fixed by bridging, the reinforcing ribs 24 are also fixed in a stable state. In addition, the reinforcing rib 24
Skis with various characteristics can be obtained by changing the material of the skis, such as carbon graphite or wood. Furthermore, as shown in FIG. 4, a ladder-shaped spacer member 20 having longitudinal reinforcing ribs 24 may be integrally molded. In this way, there are fewer manufacturing steps and costs can be reduced.

As described above, according to the present invention, as a reinforcing material,
Using a braid of bendable supporting members such as glass fiber vertically and wire material or synthetic resin string material horizontally, the reinforcing material is three-dimensionally inserted into the foamed resin by bending this supporting member. The strength of the ski can be freely designed. Therefore, by using a low-strength top material, which can be said to hinder the degree of freedom in designing the strength of skis, by deforming the reinforcing material as described above, we can achieve freedom in design. The spacer member can prevent the top material from sagging. By selecting the material and strength of this spacer member, the degree of freedom in designing the strength of the ski is further increased.

Various embodiments of the present invention have been described above, but it goes without saying that the present invention is not limited to the embodiments described above, and many modifications may be made without departing from the spirit of the invention. Of course, it can be done.

[Brief explanation of the drawing]

The drawings show preferred embodiments of the present invention; FIG. 1 is a cross-sectional view showing the internal structure of the ski mount, FIG. 2 is a cross-sectional view of the ski mount showing other internal structures, and FIG. 3 is a cross-sectional view of the ski mount. FIG. 4 is a perspective view showing another embodiment of the spacer member. 1...Top surface reinforcement material, 2...Bottom surface reinforcement material, 3...
Side reinforcement material, 4... Sole material, 5... Steel edge, 7... Reinforcement material, 8... Foaming resin, 9...
Glass fiber roving, 10... Glass fiber thread, 11... Glass fiber roving, 20... Spacer member, 22... Holding material, 2
4...Reinforcement rib.

Claims (1)

[Claims] 1. In a ski in which the ski base frame is filled with foamed resin, bendable supporting members such as glass fibers are braided vertically and bendable support members such as wire materials or synthetic resin string materials are braided horizontally, so that the glass fibers can be moved to any spatial position. A reinforcing member that is supported by bending the supporting member so that the
A ski characterized in that a spacer member for maintaining a constant distance between the upper and lower plates of a ski frame frame is disposed in a foamed resin.