JPH059579U - Ski Stock - Google Patents

Abstract

(57) [Abstract] [Purpose] In a ski pole in which a plug is fitted to a pole shaft and a basket is attached to the outer periphery of the plug, the basket can be easily replaced and the plug can be prevented from coming off the pole shaft. Provide ski poles. [Constitution] In a ski pole in which a plug 15 is fitted on the lower end of a pole shaft 11 and a basket 18 is mounted on the outer peripheral portion of the plug 15, the pole shaft 11
The engaging concave portion 19 is formed on the inner surface of the plug 15, and the engaging convex portion 20 that engages with the engaging concave portion 19 is formed on the inner peripheral portion of the plug 15.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a ski pole having a basket attached to the lower end of a pole shaft.

[0002]

[Prior Art]

 There are two types of conventional ski poles with a basket attached to the lower end of the pole shaft. That is, in the first structure, the collar and the stopper are fixed to the pole shaft at the top and bottom of the basket inserted in the pole shaft, and the basket is clamped by the collar and the stopper. .. In the second configuration, a cylindrical plug is fitted to the lower end of the pole shaft, and the basket is press-fitted to the outer peripheral portion of this plug. This configuration has the advantage that it is easy to replace the basket, which allows you to obtain multiple types of ski poles with different designs.

The present invention is an improvement of the second configuration described above. This conventional example is shown in FIG. That is, a synthetic resin cylindrical plug 2 having an adhesive applied to the inner periphery thereof is press-fitted / fitted to the lower end of a tapered aluminum alloy pole shaft 1, and the outer periphery of the plug 2 is The basket 3 is press-fitted. The surface of the basket 3 is designed by printing or painting.

[0004]

[Problems to be solved by the device]

 In the above-described conventional example, since the pole shaft 1 and the plug 2 are made of different materials, they have different thermal expansion coefficients. Therefore, if the heat history between the pole shaft 1 and the plug 2 is repeated between normal temperature and low temperature, a slight gap may occur between the pole shaft 1 and the plug 2 due to the difference in the coefficient of thermal expansion between them. The adhesive force between the two and the adhesive will decrease. Then, when the basket 3 is hit in the direction of the arrow in order to replace the basket 3, there is a problem that the plug 2 comes out of the pole shaft 1 together with the basket 3.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a skid stock that can easily replace a basket and can prevent the plug from coming off the pole shaft. ..

[0006]

[Means for Solving the Problems]

 According to the present invention, in a ski pole in which a plug is fitted on the lower end of a pole shaft and a basket is mounted on the outer peripheral portion of the pole shaft, an engaging recess is formed on the pole shaft and the inner peripheral portion of the plug is formed. The feature is that the engaging convex portion that engages with the engaging concave portion is formed.

[0007]

[Action]

 According to the present invention, since the engaging protrusion of the plug mounted on the lower end of the pole shaft engages with the engaging recess of the pole shaft, the plug is prevented from moving in the vertical direction with respect to the pole shaft. Further, since the basket is attached to the outer peripheral portion of the plug, the plug is prevented from being diametrically expanded and deformed.

[0008]

【Example】

 Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. The pole shaft 11 is made of an aluminum alloy in a pipe shape, and has a tapered lower end portion with a smaller diameter. The pole shaft 11 has a grip 12 and a hand skin 13 attached to the upper end thereof, and a butt 14 at the lower end thereof. The plug 15 is formed of a synthetic resin such as polyethylene or polyurethane in a cylindrical shape, has a large frustoconical receiving portion 16 formed at the upper end thereof, and a plurality of, for example, six projecting portions 17 formed on the outer peripheral portion thereof. The holding portion 18 is formed. The cross-sectional shape of the protrusion 17 is a wedge shape in which the upper surface 17a is substantially horizontal and the lower surface is inclined. The plug 15 has a tapered inner peripheral portion 15a fitted to the lower end portion of the pole shaft 11.

The basket 19 has a disk shape, and the inner peripheral portion 19 a is press-fitted into the outer peripheral portion of the plug 15, that is, the holding portion 18. This basket 19 prevents the pole shaft 11 from being deeply stuck in the snow when a ski pole is used, and its upper surface is designed by printing or painting. The engaging recess 20 is formed by plastically deforming the outer peripheral surface of the pole shaft 11 into a concave shape, and thus has an arc-shaped cross section. The engaging convex portion 21 is integrally formed with the plug 15, and projects from the inner peripheral portion 15 a in an arcuate cross section and engages with the engaging concave portion 20.

Next, the assembly procedure of the above embodiment will be described. First, the plug 15 is inserted from the receiving portion 16 side into the small-diameter lower end portion of the pole shaft 11, that is, the butt 14, and pushed upward. Then, the inner peripheral surface of the engaging convex portion 21 abuts on the outer peripheral portion of the pole shaft 11. Therefore, when the plug 15 is pushed further upward, the plug 15 is elastically deformed and moves while expanding the inner diameter of the engaging convex portion 21. Then, when the engaging convex portion 21 rises to a position corresponding to the engaging concave portion 20, the plug 15 elastically returns and the engaging convex portion 21 engages with the engaging concave portion 20. Next, the receiving portion 16 is received by a jig, the inner peripheral portion 19a of the basket 19 is press-fitted into the holding portion 18 from below the plug 15, and its upper surface portion 19b is abutted against the lower surface portion 16a of the receiving portion 16. Then, the basket 19 is attached to the holding portion 18 of the plug 15.

By the way, when a downward force, that is, in the direction of arrow A, acts on the plug 15, the engaging convex portion 21 abuts against the end surface portion of the engaging concave portion 20 and prevents the plug 15 from moving downward. .. Further, when a strong force is applied to the plug 15, the inner diameter of the engaging convex portion 21 is pushed and expanded along the engaging concave portion 20 to enlarge the outer diameter of the plug 15, but the outer peripheral portion of the plug 15 is Since the basket 19 is mounted, the outer diameter of the plug 15 hardly changes, so that the plug 15 does not come off the pole shaft 11. On the other hand, when replacing the basket 19, if the basket 19 is struck in the direction of arrow B with a force P larger than the holding force of the holding portion 18, only the basket 19 is easily removed. Therefore, a new basket may be attached.

According to the above embodiment, the following effects are obtained. That is, the plug 15 is fixed to the pole shaft 11 by engaging the engaging convex portion 21 with the engaging concave portion 20, and the basket 19 is attached to the outer peripheral portion of the plug 15. Can be prevented from coming off. Moreover, since it is not necessary to make the dimensional accuracy of the inner peripheral portion 15a so high, the manufacturing cost of the plug 15 can be reduced. Further, the basket 19 can be easily replaced, and it is possible to cope with diversification of the design of the ski pole.

FIG. 3 shows a second embodiment of the present invention. The difference from the first embodiment is that the engaging concave portion 22 and the engaging convex portion 23 have a sectional shape of an arc of an upper half portion. The radius of curvature of is larger and the radius of curvature of the lower half arc is smaller. FIG. 4 shows a third embodiment of the present invention. The difference from the first embodiment is that the engaging concave portions 24 and the engaging convex portions 25 have trapezoidal sectional shapes. .. Also in these second and third embodiments, the same effect as that of the first embodiment is obtained. The present invention is not limited to the embodiments described above and shown in the drawings, and various modifications can be made without departing from the scope.

[0014]

[Effect of the device]

 According to the present invention, in a ski pole in which a plug is fitted on the lower end of a pole shaft and a basket is mounted on the outer peripheral portion of the pole shaft, an engaging recess is formed on the pole shaft and the inner peripheral portion of the plug is formed. Since the engagement protrusions that engage with the engagement recesses are formed, the basket can be easily replaced, and the plug can be prevented from coming off the pole shaft.

[Brief description of drawings]

FIG. 1 is an enlarged front view of a main part with a part broken away.

FIG. 2 is an overall perspective view.

FIG. 3 is a view corresponding to FIG. 1 of a second embodiment of the present invention.

FIG. 4 is a view corresponding to FIG. 1 of a third embodiment of the present invention.

FIG. 5 is a view corresponding to FIG. 1 of a conventional example.

[Explanation of symbols]

 11 Pole Shaft 15 Plug 18 Basket 19 Engagement Recess 20 Engagement Convex 21 Engagement Recess 22 Envelope Convex 23 Engagement Recess 24 Engagement Convex

Claims (1)

[Claims for utility model registration] [Claim 1] In a ski stock in which a plug is fitted to the lower end of a pole shaft and a basket is mounted on the outer periphery of the plug, an engaging recess is formed in the pole shaft. A ski stock, wherein an engaging convex portion that engages with the engaging concave portion is formed on an inner peripheral portion of the plug.