JP2543285Y2 - Ski pole - 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 pole using a fiber reinforced shaft.

[0002]

2. Description of the Related Art As is well known, a resin basket is attached to a lower portion of a shaft of a ski pole, and the basket is sandwiched between a cylindrical collar and a metal fitting formed of an annular metal plate. Is fixedly locked.

[0003] That is, the shaft is formed such that the lower half of the shaft is tapered gradually from a substantially central portion thereof, and the collar and the basket are sequentially inserted and mounted on the shaft from the lower end thereof. It is press-fitted and fixed at a predetermined position of the tapered portion, and serves as a stopper for the basket inserted below it. Further, the fixing bracket regulates the basket to move downward, and fixes the basket at a predetermined position. The annular inner peripheral portion has a plurality of radially inwardly projecting portions. A locking claw is formed,
The shaft is inserted through the lower end of the shaft and press-fitted until it comes into contact with the basket. At this time, the locking claw slides on the outer peripheral surface of the shaft, and is deformed as the outer diameter of the shaft increases, and the distal end portion of the locking claw contacts the shaft in a state of being engaged with the outer peripheral surface of the shaft. Fixedly locked.

[0004] In recent years, in order to improve the strength of ski poles, those using fiber reinforced shafts such as carbon fiber instead of conventional aluminum alloy shafts have come into practical use. However, since this fiber-reinforced shaft is formed by winding a Kevlar fiber around the outer periphery of a carbon shaft and integrally solidifying it with a resin, for example, if the conventional basket fixing structure is adopted as it is, the fixing bracket is fitted into the fiber-reinforced shaft. In doing so, the locking claws of the fixing bracket scrape the outer peripheral surface to damage the fibers, and the strength of the shaft portion below the basket decreases.

[0005] In view of the above, the applicant of the present invention first fixedly locks the basket to the fiber reinforced shaft, and as a ski pole which does not damage the outer peripheral surface of the shaft, a portion below the fixedly locked position of the basket is used. A structure in which the lower end portion of the fiber reinforced shaft is covered with a protective cap made of metal such as aluminum was proposed (Japanese Utility Model Application No. 4-88819), but the following points also need to be improved. Recognized.

[0006]

That is, during skiing, it often happens that the ski pole comes into contact with its own ski pole, and at this time, the shaft portion of the ski pole at the edge of the ski pole above the basket of the ski pole. It is often the case that a fiber reinforced shaft is used. Therefore, when a fiber reinforced shaft is employed, there is a high possibility that the fiber reinforcing material is cut at a shaft portion above the fixed engagement portion of the basket, and It is difficult to ensure the durability, for example, the strength of the steel is reduced and breakage is likely to occur.

[0007] The present invention has been made in view of such circumstances, and an object of the present invention is to make it possible for a ski to slide even when an edge portion of the ski comes in contact with a shaft portion above a basket of ski poles. It is an object of the present invention to provide a ski pole which can prevent damage to a fiber reinforcement as much as possible and can improve durability.

[0008]

In order to achieve the above object, the present invention provides a tapered shaft having a tapered portion formed by winding a fiber reinforcing material around an outer periphery and gradually reducing a diameter of a lower portion. in ski pole which sealed fixed engagement the basket position, the lower end of the shaft, all of the outer periphery from the lower end to the fixed locking position of said basket
However, the portion above the fixed locking position is further covered over about twice the length from the lower end to the fixed locking position.
Wearing cormorants protective cap, with the said fixed locking positions of the protective cap outer peripheral portion provided with a stopper member for restricting the upward movement of the basket, falling out into the basket lower under side of the stopper member The fitting is press-fitted to prevent the pressure.

It is desirable that the stopper member be formed integrally with the protective cap by expanding the diameter of the protective cap.

[0010]

According to the ski pole according to the present invention having the above-described structure, the outer periphery of the shaft around which the fiber reinforcement is wound is not only from the lower end to the fixed locking position of the basket, but also the outer periphery.
About two times from the lower end of the
Fixed engagement system locking position of those the basket 6 over a length equivalent to
To a further upper portion are covered with a protective cap, and the basket is fixedly locked by being sandwiched between a stopper member provided on the outer periphery of the protective cap at a fixed locking position and a fixing fitting press-fitted below the stopper member. Therefore, not only does the fixing bracket not damage the fiber reinforcement when the basket is attached, and even if the ski comes in contact with the upper part of the stock basket during skiing, the edge of the ski will hit the protective cap. Due to the contact, damage to the fiber reinforcement of the shaft can be prevented as much as possible, and a reduction in strength can be prevented to improve durability.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. FIG. 1 is a longitudinal sectional view showing a lower end portion of a first embodiment of a ski pole according to the present invention. In the figure, reference numeral 2 denotes a shaft, which is a fiber reinforced shaft in which a Kevlar fiber 2b is wound around the outer periphery of a carbon pipe shaft 2a as a fiber reinforcing material and fixed with a resin. The lower part from the part is formed in a tapered shape with a gradually decreasing diameter.

A lower part of the shaft 2 is provided with a protective cap 8 made of a thin metal cylinder made of an aluminum alloy or steel (SPC). The protective cap 8 is in close contact with the shaft 2 and covers from the lower end thereof to a portion above the fixed locking position of the basket 6 by a predetermined length, and in this embodiment, from the lower end of the shaft 2 to the fixed locking position of the basket 6. Not only that, the upper portion is further covered from the fixed locking position of the basket 6 over a length corresponding to about twice from the lower end to the fixed locking position of the basket 6.

At the fixed locking position, steps 2d and 8a are formed on both the shaft 2 and the protective cap 8 so as to match each other, and the basket 6 is fixed by the steps 8a. The upper part of the collar 4, which is a stopper member, is prevented from moving upward, and is locked at the corresponding portion. A bottom 8b is formed integrally with the lower end of the protective cap 8, and a through-hole 8c is formed in the lower end of the shaft 8 at the lower end of the shaft 2 for inserting and mounting a ston 10 in the axial direction.

The collar 4 is formed of a thick-walled cylinder made of an aluminum alloy or the like, and has an inner diameter substantially equal to a small outer diameter of a small diameter of a step 8a formed on the protective cap 8. The collar 4 is inserted into the outer periphery of the protective cap 8 from the lower end of the shaft 2 and is fixed at a predetermined fixed locking position where the step 8a is formed.

The basket 6 is formed of a resin, and is inserted from the lower end of the protective cap 8 to the outer periphery thereof, following the collar 4, and comes into contact with the collar 4 which is locked at the fixed locking position. Movement to the part is prevented.

On the lower side of the basket 6, a metal fitting 14 is inserted through the outer periphery of the protective cap 8 and press-fitted. The fixing bracket 14 is formed of an annular metal plate, and has a plurality of locking claws 14a protruding radially inward at an inner peripheral portion thereof. When press-fitted, the locking claw 14a is elastically deformed in the direction opposite to the insertion direction as the outer diameter of the protective cap 8 becomes thicker and bites into the outer peripheral surface as the outer diameter of the protective cap 8 increases while the tip of the locking claw 14a slides on the outer peripheral surface. ,
The basket 6 is sandwiched between the fixing fitting 14 and the collar 4 so that the basket 6 is prevented from moving up and down, and is firmly fixed at a predetermined fixed locking position.

The ram 10 has a conical head 10a and a shaft 1
The shaft 10b is inserted into the hole 2c of the shaft 2 through the through hole 8c and is fixed to the shaft 2 with an adhesive. The protective cap 8 is engaged and fixedly locked.

It should be noted that a male screw may be formed on the shaft portion 10b of the ram 10 and a female screw may be formed on the lower end of the hole 2c of the shaft 2, so that the ram 10 may be screwed onto the shaft 2. . Further, the protective cap 8 and the shaft 2 may be joined with an adhesive.

Accordingly, in the ski pole constructed as described above, the outer periphery of the shaft 2 around which the fiber reinforcement 2b is wound has a protective cap 8 extending from the lower end thereof to a position above the fixed engagement position of the basket 6 by a predetermined length. The basket 6 is fixedly locked by being sandwiched between the collar 4 provided at the fixed locking position on the outer periphery of the protective cap 8 and the fixing metal fitting 14 press-fitted to the lower portion thereof.
In addition to preventing the fiber reinforcement 2b from being damaged by the fixing metal fittings 14 when the ski is mounted, even if the ski comes in contact with a portion above the ski stock basket 6 during skiing, the edge of the ski is protected by a protective cap. 8, damage to the fiber reinforcement 2 b of the shaft 2 can be prevented as much as possible, and a reduction in the strength of the shaft 2 due to damage to the fiber reinforcement 2 b can be prevented as much as possible. And its durability can be improved.

FIG. 2 is a longitudinal sectional view showing a lower end portion of a modified embodiment of the present invention. In this modified embodiment, a stopper member for fixing and locking the basket 6 is integrally formed with the protective cap 8 in place of the collar 4 of the above-described embodiment, and the protective cap 8 corresponds to the fixed locking position. An enlarged diameter portion 8d that projects radially outward corresponding to the thickness of the boss portion of the basket 6 is integrally provided.

If the stopper member is formed integrally with the protective cap 8 as the enlarged diameter portion 8d as described above, the number of parts is reduced, the parts are easily managed, and the assembling work is also simplified.

[0022]

According to the present invention, as described above, according to the ski pole according to the present invention, the outer periphery of the shaft around which the fiber reinforcing material is wound is not only from the lower end thereof to the fixed locking position of the basket, but also From the bottom of the basket
Over the length corresponding to about twice the fixed stop position.
The basket 6 is covered by a protective cap from the fixed and locked position to a further upper portion, and the basket is sandwiched between a stopper member provided at the fixed and locked position on the outer periphery of the protective cap and a fixing fitting press-fitted to a lower portion thereof. It is fixed and locked, so not only will the fiber reinforcement not be damaged by the mounting bracket when the basket is mounted, but even if the ski comes in contact with the upper part of the ski stock basket during skiing, this ski Since the edges of the plate abut the protective cap, it is possible to prevent damage to the fiber reinforcement of the shaft as much as possible, and to reduce the strength of the shaft due to damage to the fiber reinforcement as much as possible. Thus, the durability can be improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a lower end portion of an embodiment of a ski pole according to the present invention.

FIG. 2 is a longitudinal sectional view showing a lower end portion of a modified embodiment of the ski pole according to the present invention.

[Explanation of symbols]

 2 Fiber Reinforced Shaft 2a Carbon Pipe Shaft 2b Kevlar Fiber (Fiber Reinforcement) 2c Hole 4 Collar (Stopper Member) 6 Basket 8 Protective Cap 8d Enlarged Diameter (Stopper Member) 10 Ishibashi

Claims (2)

(57) [Scope of request for utility model registration] 1. A ski pole in which a basket is fixedly locked at a predetermined position of a tapered portion of a tapered shaft formed by winding a fiber reinforcing material around an outer periphery and gradually reducing a diameter of a lower portion thereof. Not only from the lower end to the fixed locking position of the basket, but also from the lower end
Further solid for about 2 times the length of up to the locking position
A protective cap for covering a portion above the fixed locking position is mounted, and a stopper member for restricting upward movement of the basket is provided at the fixed locking position on the outer peripheral portion of the protective cap. A ski pole, which is press-fitted on a side thereof with a fixture for preventing the basket from dropping downward. 2. The ski pole according to claim 1, wherein said stopper member is formed integrally with said protective cap.