JPS59214471A - Ski board - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to improvements to skis.

Conventionally, skis have been made of wood, FRP, metal/glass, etc.

In ancient times, wooden skis often had a keel shape with a raised upper surface to maintain strength, but they gradually became obsolete due to their heavy weight, poor maneuverability, and lack of bending rigidity. Skis have become flat and have been replaced by high-performance skis made of FRP or metal.

Nowadays, skis have a double-tapered shape in which the thickness gradually increases from the tip to the center, and gradually becomes thinner from the center to the rear end, and the top surface is flat. Skis are becoming popular. As for the structure, a sandwich structure in which reinforcing members such as FRP boards are arranged on the upper and lower surfaces of the core material, and a box structure in which reinforcing members are arranged around the entire circumference of the core material are known.

These structures are generally adopted by ski manufacturers because the manufacturing process is easy when manufacturing skis.

However, when considering skis from the viewpoint of physical properties,
The extremely difficult problem was how to balance and design the north characteristics, which influence each other, such as torsional strength, bending strength, vibration damping, and air resistance.

For example, if you improve the tear resistance of skis, the bending strength will increase, resulting in skis that have a stiff waist.
The vibration damping properties were also reduced, which had a negative effect on the sliding performance.

In addition, in order to reduce the air resistance of skis while skiing, we have made holes of arbitrary shapes in the shovel part at the tip of the ski, and made the shovel part's rise as low as possible to reduce air resistance as much as possible. Efforts have been made to suppress this and increase the speed during sliding, but these methods have the drawback of requiring time and effort in manufacturing and increasing manufacturing costs.

Therefore, it is desired to develop skis that have soft elasticity, high torsional strength, good vibration damping properties, and low air resistance by combining materials with various characteristics. Although research and development is being carried out, a satisfactory ski has not yet been provided.

In view of these conventional drawbacks, the present invention refers to the raised structure on the upper side of old wooden skis.
To improve the characteristics of skis such as rigidity, torsional strength, vibration damping properties, air resistance, etc. by changing the top surface shape of the ski from the conventional flat plate shape to a roof-shaped protrusion that swells upwards. The purpose was to provide skis with good sliding properties.

Several embodiments of the present invention will be described based on the drawings.

Embodiment 1 An upper plate 6 having a roof-shaped protrusion having a top at the center of the ski width formed by an upper plate 3 and a reinforcing member 4 on the upper part of a core body 2 made of any material constituting the top of the ski. This ski is characterized by filling and bonding a core material 7 of fT to the roof-shaped protrusion.

Example 2 This is a ski board filled with metal fibers or other fibers as the optional core material 7 in the above example.

Example 3 As the core material 7 of the f moi material in the above example, metal vA
m. Skis in which non-condensing mucus (eg glycerin) or powder (eg silica gel) is interposed in other fibers.

In this invention, by forming the roof-shaped protrusion 5 on the top plate 6, it is possible to improve the torsional strength and bending strength, which were not seen in conventional skis. For example, by forming a roof-shaped protrusion either on the front or rear side or on the MjI side or the rear side, the whole ski 1 can be made flexible, and the front part of the ski 1 can be made flexible.
It is now possible to design the rear part with stronger torsional and bending strength. Furthermore, by combining materials with various characteristics for the upper surface material 3 and the reinforcing member 4, the degree of freedom in designing the ski is further improved.

In particular, when the roof-shaped protrusion 1 is filled with glass or other fibers 7, when the skis vibrate when skiing, the metal fibers rub against each other and convert it into thermal energy, damping the vibrations. As a result, the gliding performance and maneuverability are significantly improved. Similar effects can be obtained when non-solidified mucus or powder is interposed in the metal or other fiber M7 as in Examples 2 and 3.

Furthermore, by forming the roof-shaped protrusion 5, air flows along the roof-shaped protrusion 2 during skiing, improving the directivity of the ski. This has the effect of preventing climbing, further improving gliding speed and maneuverability. Also, the shape of the roof-shaped protrusion 5 can be arbitrary, for example, mountain-shaped or arch-shaped, and if the upper surface material 3 is made of polyethylene, fluororesin, or other synthetic resin with high surface tension, the surface tension will increase and snow will fall. This makes the skis difficult to land snow on even during long ski runs.

Thus, the skis of the present invention can easily adjust torsional strength, bending strength, bending rigidity, etc., and can provide skis with performance suitable for skiers of all levels, from beginners to intermediate/advanced skiers and competitive athletes. It is something.

[Brief explanation of the drawing]

The drawings show several embodiments of the present invention, and FIG. 1 is a perspective view showing an example of a top plate, and FIGS. 2 to 4 are cross-sectional perspective views of essential parts. Left: ski, 2: core, 3: two-faced face, 4: reinforcing member, 1: roof-shaped protrusion, 6:
-Top plate, 7...metallic fibers and other fibers. Patent Applicant Mizuno Co., Ltd. Representative Director Kenji Mizuno Department Figure 1 Procedural Amendments■ Indication of the Case 1982 Patent Application No. 8821'1 No. 2 Name of the invention Skip - Board 3 Person making the amendment Relationship to the case Patent Applicant 4 Date of amendment order Showa year, month, day (voluntary) ■ A roof-shaped protrusion is formed on the upper part of the core body forming the ski by the top material and the reinforcing member, and the roof-shaped protrusion is covered with metal fibers. A ski board characterized by being filled with and bonded with other fibers. 2 Metal fibers and other fibers filled in the roof-shaped protrusion,
2. The ski according to claim 1, wherein the ski has non-condensing mucus interposed therein. 3 Metal fibers and other fibers filled in the roof-shaped protrusion,
2. The ski according to claim 1, wherein a non-solidified powder is interposed. The detailed description of the invention and the brief description of the drawings in Specification 2 are amended as follows. (]) Delete "keel-like" from line 1 to line 2 of page 2 of the Mingsensho. (2) Delete "The top is at the center of the ski width" from page 14 to line 15 of the same page. (3) Delete "2." on page 6, line 5. (4.) Correct "Metallic fibers and other fibers" in lines 9 to 10 of page 7 to "Core material of any material."that's all

Claims (1)

[Scope of Claims] 1. A roof-shaped protrusion of an upper plate, in which a roof-shaped protrusion with the top at the center of the ski width is formed by a top material and a reinforcing member, etc. on the upper part of the core body forming the ski. A ski board characterized by being filled with and bonded with metal fibers and other fibers. 2. The metal fibers and other fibers filled in the roof-shaped protrusion are interposed with non-condensing mucus fr! t'l'
A cedar board according to item 1 of the scope of requirements. 31) The ski according to claim 1, wherein non-coagulable powder is interposed in the metal fibers or other fibers filled in the roof-shaped protrusion indicated by θ.