JPH02255167A - Ski board for lawn ski contest - Google Patents

Abstract

PURPOSE:To approximate a kinetic characteristic to a snow-ski board, and to execute a contest and training in the same way as snow in a place where there is no snow by positioning at least one piece of many rollers which are arranged, in the inside of plate width of the ski board. CONSTITUTION:On the lower face of a plate body 1, rollers 5a, 5b, 5c, 5d and 5e are provided axially so as to be freely turnable on both ends, respectively, with respect to roller axes 4 provided axially on plural bearing metallic fittings 3a, 3b, 3c, 3d and 3e, respectively formed by fixing in the center part of the plate surface. Also, an outside arrangement line L2 of these rollers 5a, 5b, 5c, 5d and 5e shows an arc shape whose diameter is smaller than an arc-like side edge line L1 of the plate body 1, and all or at least one piece of the rollers 5a, 5b, 5c, 5d and 5e are arranged along the outside arrangement line L2 so as to be positioned in the inside of plate width of the plate body 1. According to this constitution, since many rollers are provided so as to be roughly proportional to each other in accordance with a weighted distribution applied at the time of sliding, average weight if applied to each roller, and the same weighted characteristic as a snow-ski board is shown.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the improvement of skis for turf skiing competitions, and in particular enables two rotations, turning and braking movements similar to snow skis, and is suitable for skis on snow. The present invention relates to skis for turf skiing competitions that can be used for competitions similar to those of Skis are generally like longer roller skates, and have a structure in which multiple rollers or caterpillars are mounted on the bottom surface of the rigid skis that are worn on the feet. The motion was completely different from that of skis.

Therefore, the applicant of the present application has proposed a ski for turf ski competitions that generates motion characteristics similar to those of snow skis in snowless areas or during non-snowy conditions, and that has approximately the same shape and width as snow skis, and Skis for turf ski competitions (Utility Application 1982-1982) consisting of a pair of skis with bending elasticity and a large number of rollers rotatably mounted on the lower surface of the skis in the longitudinal direction.
No.).

[Problem to be solved by the invention]

However, compared to snow skis, Jukishiba competition skis are not fully satisfactory in sliding and turning, and they also have the problem that the feeling when sliding and turning is different from that of snow skis. was.

The present invention was made in view of the above problems, and it makes the motion characteristics of skis for turf ski competitions more similar to those of skis for snow skiing, so that competitions and training similar to those on snow can be performed in areas without snow or during non-snowy conditions. The object of the present invention is to provide skis for turf skiing competitions.

[Means to solve the problem]

The ski for turf skiing according to the present invention has a pair of skis having substantially the same shape and width as skis for snow and grass skis, and a large number of rollers rotating in the longitudinal direction on the lower surface of the skis having the same flexural elasticity. In skis for turf ski competitions that are freely pivoted,
The gist is that at least one of the many arranged rollers is located inside the width of the ski.

Preferably, the outer arrangement line of the plurality of rollers arranged inside the width of the ski has an arc shape.

In addition, each roller has a spindle shape in which the inner diameter is larger than the outer diameter, and is composed of a pair of rollers that are rotatably mounted on both ends of a roller shaft that is pivotally mounted to the ski. In addition, it is preferable that the gaps between each pair of rollers be configured to have the same width.

Furthermore, it is desirable that the number of rollers be arranged approximately proportionally to the load distribution applied when the ski skis, and that the roller diameters at the front and rear portions of the ski be larger than those at the central portion.

[Effect]

According to the above configuration, a large number of rollers are arranged so as to be approximately proportional to the load distribution applied during sliding.
An average weight is applied to each roller, and the weight distribution characteristics are similar to those of snow skis.

In addition, since each roller has a spindle-shaped curved circumference in which the outer diameter is smaller than the inner diameter, the outer arrangement line of the roller located in the center of the rollers follows the arc-shaped plate body. Coupled with the fact that the rollers are arranged inside the side edge line, the plate surface tends to tilt sideways, and when tilted, the difference in circumferential diameter of the rollers due to the movement of the installation surface and the change in the outer arrangement line. Due to the edge effect associated with the curve, it exhibits turning motion characteristics similar to those of snow skis.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of skis for turf skiing competitions according to the present invention will be described below with reference to the drawings. Figures 1 to 6 show the first embodiment, and the planar shape of the plate 1 (see Figure 1) is an arcuate shape with a slightly narrower center, similar to snow skis. A side edge line L1 is formed, a spindle-shaped tip 2 is formed, and the side surface shape is curved in a four-shape shape with a middle and high height similar to snow skis, and the tip 2 is curved upward (see Fig. 2). )
It consists of The plate body 1 is made of a plate material such as wood, metal, or synthetic resin, or a composite material thereof, so that its bending elasticity is approximately the same as that of a snow ski. On the lower surface of the plate 1 are a plurality of bearing fittings 3 a fixedly installed in the center of the plate surface.
, 3b, 3c, 3d, and 3e, rollers 5 are provided at both ends of each roller shaft 4, respectively.
a g 5 b g 5 Q g 5 (] y 5
e is rotatably mounted on a shaft. The gaps between the pair of rollers 5a, 5b, 5c, 5d, and 5e provided on each roller shaft 4 are configured to have the same width regardless of the front and rear positions, and the front and rear rollers 5a, 5b, and 5c , 5d.

The positions 5e are arranged so as to be approximately proportional to the load distribution applied to the plate 1 during sliding, and a larger number of rollers are provided at the center than at the front and rear.

Further, the outer arrangement line L2 of the rollers 5a, 5b, 5c, 5ci, and 5e has an arcuate shape with a smaller diameter than the arcuate side edge line L1 of the plate body 1, and the rollers 5a, 5b.

1. Outer arrangement line L such that all or at least one of 5c, 5d, and 5e is located inside the width of the plate 1.
It is arranged along 2.

Also, rollers 5a, 5b, 5d at the front and rear of the plate body 1.

The diameter of the roller 5e is larger than that of the roller 5c in the center, and the difference in the transfer surface due to the large diameter is maintained at a level by housing the roller in a roller housing 6 formed on the plate 1 in a raised manner. . Each roller 5a, 5b.

5 cr 5 d r 5 e is made of hard, semi-hard, or soft synthetic resin and is mounted on the roller shaft 4 via a bearing 7 integrally molded on the shaft core. As shown in the figure, the roller has a spindle shape in which the outside diameter is smaller than the inside diameter, and the peripheral surface of the roller has 8° radial stripes that are variously selected depending on the conditions of the running surface. Various uneven patterns such as thrust stripes 10 and combinations thereof are formed.

Reference numeral 11 designates a roller guard protruding from the lower surface of the plate 1 in close proximity to the front side of the main rollers, and is provided within a range that does not protrude beyond the ground contact surface of each roller.

The skis for turf skiing competitions having the above structure are used in pairs, and like skis for snow, the skis have a single body.
The boots can be worn by fixing known boot mounting brackets on the upper surface of the boots.

- According to the above configuration, a large number of rollers are arranged so as to be approximately proportional to the load distribution applied during skiing, so an average weight is applied to each roller, and the weight is similar to that of snow skis. Show characteristics.

Further, although the above skis for turf skiing competitions are used on natural and artificial turf, or concrete level surfaces, and other non-snow skiing, they are capable of not only sliding and turning, but also jumping, just like snow skis. That is, each roller 5a, 5b, 5c,
5d and 5e constitute a spindle-shaped curved circumference in which the outer diameter is smaller than the diameter of the inner roller 1, and the outer arrangement line L2 of the rollers 5b, 5c, and 5d located in the center of the rollers is Coupled with the fact that it has an arc shape with a smaller diameter than the arc-shaped side edge line L1 of the plate body 1 and is arranged to be located inside the width of the plate body 1, the plate surface can be easily tilted to the side. Become,
When it is tilted, it exhibits motion characteristics similar to those of snow skis due to the difference in circumferential diameter of the rollers due to the movement of the installation surface and the edge effect associated with the curvature 1+1143 of the outer arrangement line L2.

Next, FIGS. 7 to 9 show other embodiments of the present invention. That is, in this embodiment, the front and rear rollers 5a, 5b, 5d, and 5e have large diameters for the purpose of absorbing the difference in the transfer surface.
The roller housing 6 of the first embodiment, which accommodated the rollers, is eliminated, and each roller is housed in a notch 12 formed in the plate body 1.

In addition, in this configuration, it is necessary to construct a reinforcing structure within the thickness of the plate so that the rigidity of the portion where the plate 1 remains where the notch 12 is formed is not deteriorated.

It goes without saying that the larger the outer diameter of the roller, the better the transferability of the roller, but if the plate body 1 is located at a high position from the running surface, the movement characteristics will be different from those of snow skis, so the notch 1
2, it is preferable to bring the transfer surface of the roller as close to the lower surface of the plate 1 as possible.

〔Effect of the invention〕

Since the skis for turf skiing competitions according to the present invention are constructed as described above, the motion characteristics of the skis are similar to those of snow skis, and are suitable for ski-like competitions in areas without snow and for out-of-season skis. It is extremely useful as a sports equipment for ski training or ski-like competitions in non-snowy areas, and the influence of the present invention on turf ski competitions is extremely large.

[Brief explanation of drawings]

FIG. 1 is a plan view of a ski showing a first embodiment of a ski for turf skiing according to the present invention, FIG. 2 is a side view of the same, FIG. 3 is a bottom view of the ski, and FIG. An enlarged sectional view showing the mounting structure, Fig. 5 is an enlarged bottom view of the main parts, Fig. 6 (a)
FIG. 7 is a plan view of a ski showing another embodiment of the present invention, FIG. 8 is a side view of the same, and FIG. 9 is a bottom view of the same. be. 1... Plate bodies 3a, 3b, 3c, 3d, 3
e - Bearing fitting 4...Roller shaft 5a, 5b, 5c, 5d, 5
e ''Roller 6...Roller housing 11...
・Roller guard 12...notch〈0 Droplet procedure amendment (method) % formula % 1. Indication of the incident 1999 Patent Application No. 77323 2. Name of the invention Ski board for turf ski competition 3. Person making the amendment Relationship to the case Patent applicant: Kazuo Osawa 4, 3-3-4 Miyamachi, Fuchu-shi, Tokyo; Agent: No. 401, Chibukuro Century 21 Building, 1-5-4 Nishiikebukuro, Toshima-ku, Tokyo 171 July 4, 1999 Day 6, Drawing subject to amendment 7, Contents of amendment

Claims (7)

[Claims] (1) A pair of skis for turf ski competitions, which is made up of a pair of skis that have approximately the same shape and width as snow skis, and have the same flexural elasticity, and a number of rollers are co-movably mounted on the lower surface of the skis in the longitudinal direction. A ski for turf skiing competitions, characterized in that at least one of the arranged rollers is located inside the width of the ski. (2) Claim 1 characterized in that the numerous rollers disposed on the ski are located inside the width of the ski.
The listed skis for turf skiing competitions. (3) The ski for turf skiing competitions according to claim 2, wherein the outer arrangement line of the plurality of rollers arranged inside the width of the ski has an arc shape. (4) Each roller is composed of a pair of rollers rotatably mounted on both ends of a roller shaft pivoted to the ski, and the gap D between each pair of rollers is made to have the same width. A ski for turf skiing competitions according to any one of claims 1 to 3. (5) The ski for turf skiing competitions according to claim 4, characterized in that a large number of rollers disposed on the ski are arranged approximately proportionally to the load distribution applied when the ski skis. (6) The ski for turf ski competitions according to claim 5, characterized in that the diameter of the rollers at the front and rear portions of the ski is larger than the diameter of the rollers at the center. (7) The ski for turf skiing competitions according to any one of claims 2 to 5, wherein each roller has a spindle shape with an outer diameter smaller than an inner diameter.