JPH0219171Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of the tip of the head of a ski stock.

The tip of a conventional ski stock has a cone-shaped tip at the center as shown in Fig. As shown in Fig. 3, there is a recess in the center and a ring-shaped part around it has chevron-shaped protrusions and recesses radially arranged, or as shown in Fig. 3. The tip is cut at right angles to the axial direction, and a concave arc (spherical) recess is formed from the periphery of the cut surface toward the center to form a blade-like periphery. Ta. When used by a skier, these ski stocks all have a pointed cone-shaped tip, a large number of small pyramid-shaped (so-called diamond cut) shaped protrusions, and a radial chevron-shaped protrusion on the peripheral ring-shaped part. It is formed into a strip or a blade-like ring-shaped peripheral edge, and these pointed parts 11 have a relatively small cross-sectional area, so for example, in the case of relatively soft snow, The sharp point 11 can be used to pierce the ski stock sufficiently and prevent it from slipping, but if the ski stock is pierced into frozen or frozen snow or ice cream, it will tend to slip because the ski stock is usually pierced at a slightly diagonal angle. Furthermore, when the needle is pierced in a substantially vertical direction, the cross-sectional area or the planar area of the tip is relatively small, resulting in breakage or chipping, making it unusable.

Also, according to Utility Model Publication No. 59571 of 1971, a ski stock with a screwdriver-shaped tip was proposed. This ski stock with a screwdriver-shaped tip also has a so-called minus-shaped tip with a small cross-sectional area, and like the tip of the conventional ski stock mentioned above, its flat surface area is small and it can be used in deep snow. If it sticks too far inside and consumes energy to pull it out, and if it sticks into frozen or frozen snow or ice cream, it will break like the other conventional products mentioned above because the flat surface of the tip is small. Or there was a defect that made it missing and unusable.

The present invention overcomes the defects of the conventional ski stock as described above, in which the pointed tip (with a small contact area) breaks or breaks when it comes into contact with frozen snow, ice cream, etc., or is easily slippery. In order to do this, the tip is provided with a flat tip plane with an appropriate spread and multiple arcuate or flat slopes to form multiple apex portions and allow the ski stock to be pierced diagonally. When the at least one apex portion provided at the tip acts strongly on frozen snow or ice cream, it is possible to prevent slipping, and it is also stable and will not be damaged by the impact force due to this strong action. The purpose is to provide a ski stock that is both durable and safe.

The structure of the head of the ski stock of the present invention will be explained below with reference to the drawings.

As shown in FIG.
It is formed from. Further, the tip part a has a plane 1 which is perpendicular to the axial direction of the stone protrusion A.
The tip is designed so that slopes 2, 2 having a plurality of arcs (curved surfaces) or planes (flat surfaces) can be formed in a portion extending from the plane 1 toward an arbitrary point on the circumferential surface below the tip a. Part a is shaved off and molded. Accordingly, the plane 1 is a trigonal to hexagonal plane, each side 3 of which forms a slope 2, and each apex portion 4 formed from each side 3 has the same angle. In this case, a polygon (or polygon) with more apexes and sides than a quadrilateral has more obtuse angles at each apex, so its sharpness (acuteness) is somewhat inferior when a piercing action occurs. become. Therefore, the most ideal shape of the plane 1 of the tip a is triangular as shown in FIGS. 1 and 2. Further, the apex portion 4 of the tip portion a having the planar triangular plane 1 includes the two apex portions 3, 3, a part of the periphery 2' of the two slopes 2, 2, and the periphery of the tip portion a. It is surrounded by side faces 6 and is also their intersection. Therefore, each of the apex corners 4 of the tip a
The plane 1 formed by the apex portion 3, etc., has a small pyramidal or conical protrusion, a protrusion, a through hole, a concave portion, a ring, or the like, such as the protrusion of a conventional ski stock. Not only is it not an aggregate of objects with a small cross-sectional area, such as a combination of It has only one large cross-sectional area that expands in the direction. For this reason, even if a strong piercing action is applied to a hard frozen snow surface or ice bump, or an impact caused by a strong reaction thereto, it will not be easily chipped or damaged. At this time, the stone tip A attached to the ski stock B
is, as shown in FIG.
The tip 4' of one apex portion 4 of the ski stock B is oriented rearward, opposite to the uneven portion 8 of the grip c, which is oriented toward the front of the ski stock B. Therefore, for example, when the ski stock B equipped with the protrusion A of the present invention stabs into the frozen snow surface in the diagonal direction where it most frequently penetrates, the stabbing action of the apex portion 4 of the protrusion A should be particularly strong. Similarly, when piercing a relatively soft snow surface, etc. in an almost vertical direction, the flat surface 1 of the stone head A is aligned with each top portion 3, each slope 2, and the peripheral side 6. Since it pierces, the pierce action is sufficiently effective to prevent slipping. At this time, if the stone tip is a conventional stone tip with a sharp pointed part 11 or a screwdriver-like stone tip with a flathead tip, it will be pierced strongly and deeply, resulting in a large amount of energy being wasted in pulling it out or damage. However, there is no risk of this occurring with the stone tip of the present invention.

Further, as shown in FIG. 1, the lug A of the present invention has a connecting bushing portion 5 projecting downward from the flange portion b, which is connected to the hollow portion of the stock main body d of the ski stock B, as shown in FIG. 7, but there is also a first
As shown in the figure, it can also be formed in the shape of a threaded portion and screwed onto a threaded portion within the stock main body d.

[Brief explanation of the drawing]

FIGS. 1 to 1 show the head of the ski stock of the present invention, and are illustrations of schematic front views of representative embodiments thereof,
is a schematic plan view showing the plane, and is an example of a schematic cross-sectional view in the axial direction. FIG. 2 is a partially enlarged schematic oblique view of the tip, which is the main part. FIGS. 3 to 3 are illustrations of schematic diagrams showing each front, each longitudinal section, and each upper surface of a conventional stone head. Fourth
The figure is a schematic diagram showing most of the side view of the ski stock with a foot according to the invention. Reference numbers in the drawings: A...stone tip, B...ski stock, a...tip, b...flange, c...
Grip part, d...stock main body, 1...plane,
2...Slope, 3...Top part, 4...Vertex part,
5... Connecting bushing part, 6... Circumferential side, 7... Hollow part, 8... Uneven part, 11... Pointed part,
…….

Claims (1)

[Scope of utility model registration request] It consists of a tip part a with a plane 1 perpendicular to the axial direction and a flange part b with a coupling bushing part 5 protruding in the opposite direction to the tip part a, and the plane 1 of the tip part a is 3 to 3. It consists of a hexagonal plane, with each side 3 forming a slope 2, and each side 3
A foot of a ski stock characterized in that the angles of the respective apex portions 4 are made equal.