WO2010044690A1

WO2010044690A1 - Device for changing a ski stick grip position

Info

Publication number: WO2010044690A1
Application number: PCT/RU2008/000647
Authority: WO
Inventors: Юрий Васильевич ВАХРУШЕВ
Original assignee: Vahrushev Yury Vasilevich
Priority date: 2008-10-14
Filing date: 2008-10-14
Publication date: 2010-04-22

Abstract

The inventive device for changing the position of a ski stick grip relates to skiing, more specifically to devices for ski sticks used for skiing. The aim of the invention is to extend the range of use of ski sticks with a grip the position of which can be changed and to design a more reliable in operation and lighter ski stick by substantially simplifying the structural design thereof. The inventive device (fig. 1) comprises a hollow rod (1), a grip (2), a double-arm lever (3) and a double-arm lever axis (4). The rod (1) has a longitudinal slot (5) for accommodating the double-arm lever (3) and for preventing the grip from rotating about the axis of the hollow rod (1). The double-arm lever (4) is accommodated in the slot (5) of the grip (2) and has a lever arm (7) which is projected from the grip in such a way that the skier’s fingers can interact therewith, the second arm (8) being in contact with the hollow rod (1). During skiing, the skier’s fingers are placed on the projected arm (7) of the double-arm lever (4), thereby fixing the position of the grip (2) with respect to the hollow rod (1). The double-arm lever (3) has been released, the grip (2) is enable to change the position thereof. The position of the grip (2) has been changed, the skier’s fingers press again on the arm (7) of the grip (2), thereby fixing the grip in a new position.

Description

Device for changing the position of the handle of a ski stick

The invention relates to the field of skiing, and more specifically to devices for ski poles used when skiing.

There are two ways of skiing: classic and “horse”.

When skiing with a classic cross-country style /, devices are used that allow you to change the position of the handle during the run by changing the length of the ski stick in order to increase the speed of running.

A device design in ski poles is known, for example, according to US JY ° 4448442 (МГЖ A63C 11 / 22A, IPC A63C 1 1 / 22B, published 1984-05-15), which allows changing the position of the handle by changing the length of the ski pole during running.

But sticks with such devices are not reliable in operation and have a sufficiently large mass in view of their very complex design.

In the device according to the patent US JY <> 4456285 (WGM A63C 1 1 / 22A WGW A63C 1 1 / 22B, published 1984-06-26), these drawbacks are reduced due to some simplification of its design, but not so much that the sticks are widely used.

Ski poles with the design of the devices described in the above patents have another common drawback: poles of such designs

I _{f are} ineffective when running with the o skate ’style in view of the insufficiency of the amount of change in the length of the sticks, which is 70 mm

(as described in the prototype patent).

The objective of the invention is to increase the reliability of operation, reducing weight and expanding the range of application of ski poles with f variable position of the handle.

SUBSTITUTE SHEET (RULE 26) The problem is solved due to the fact that in the known design of the device according to the patent US N ° 4456285, adopted by us for the prototype, containing a hollow rod, a handle with a longitudinal hole having a longitudinal slot in the upper part, in which the working element is installed on the axis, part which protrudes above the handle, means for fixing the handle against axial movement and rotation around the axis of the hollow rod, improvements have been made.

These improvements consist in the fact that the hollow rod is mounted in the handle hole with the possibility of longitudinal movement, the working element is made in the form of a two-shouldered lever, the working surface of which has the ability to contact the hollow rod, forming a means of fixation from the longitudinal movement, while the radius of the obturation of the working surface is greater the distance from the swing axis of the two shoulders of the lever to the contact surface of the hollow rod, and elements excluding the rotation of the handle around the axis of the hollow rod are made on the rod (on one side) and on the handle or on a two-armed lever - on the other.

The following improvements can be made to the device design.

For example, the elements excluding the rotation of the handle around the axis / ^ of the hollow rod can be a longitudinal slot made in the hollow rod, and the shoulder of the two shoulders of the lever, which is included in this slot.

Another element that prevents the rotation of the handle around the axis of the hollow rod may be the profile shape of the outer surface of the hollow rod and the holes in the handle in cross section, which differ from the shape f of the circle (for example, elliptical).

The working surface of the two shoulders of the lever in the longitudinal direction can be made in the form of an eccentric.

The radius of curvature of the working surface of the two shoulders of the lever can be made in magnitude smaller than the radius of the obturation of the working surface

SUBSTITUTE SHEET (RULE 26) two shoulders leverage or zero. In this case, the two-arm lever may have a rotation limiter, which, in turn, may be able to contact the hollow shaft or the handle.

The hole in the handle in which the hollow rod is placed can / be made through.

The two-armed lever can be spring-loaded in the direction of contact of the working surface of the two-armed lever with any of the surfaces of the hollow rod or in the opposite direction.

The shoulder of the two shoulders of the lever in contact with the inner surface of the hollow rod may have one or two lateral protrusions, and the working surface of the two shoulders of the lever may repeat the shape of the surface of the hollow rod in contact with it in the transverse direction.

The shoulder of the two shoulders of the lever in contact with the outer surface of the hollow rod in the working position may also have one or two 3> side protrusions, and the handle may have one or two cavities, respectively, for accommodating the protrusions.

The two-arm lever can be equipped with a latch that can contact the hollow shaft in the highest position of the handle or in the hollow shaft can be made at least

I _{1 to} one groove or recess in which the shoulder of the two shoulders of the lever protruding above the handle may enter.

The hollow rod may have limiters for the longitudinal movement of the handle in the extreme positions of the handle.

The working surface of the two shoulders of the lever can interact as ζ with at least two recesses or holes made on the surfaces of the hollow rod in contact with the working surface of the two shoulders of the lever.

Installation of a hollow rod in the hole of the handle with the possibility of longitudinal movement, the implementation of the working element in the form of two shoulders

SUBSTITUTE SHEET (RULE 26) a lever, the working surface of which has the possibility of contact with the hollow rod, forming a means of fixing the handle against longitudinal movement, and the implementation of elements that exclude the rotation of the handle around the axis of the hollow rod, on the hollow shaft - on the one hand and on the j handle or two-arm lever - on the other replace a large number of parts with one (two-arm lever), which leads to a significant reduction in the weight of the ski stick and to a significant simplification of its design, and the latter to a significant increase in reliability in its operation tation.

2 The reduction in weight and increased reliability in the operation of the ski stick is ensured by the fact that the telescopic design of the hollow rod is replaced by a solid one.

The implementation of the elements, excluding the rotation of the handle around the axis of the hollow rod, in the form of a longitudinal slot made in the hollow rod, _j and the two shoulders of the lever included in this slot of the shoulder allows limiting the longitudinal movement of the handle without further complicating the design of the device.

The implementation of the outer surface of the hollow rod and the holes in the handle in cross section in a shape different from the shape of the circle, / _j allows you to have a more robust design of the hollow rod.

The execution of the working surface of the two shoulders of the lever in the form of an eccentric allows you to fix the handle in any working position.

Performing a radius of curvature of the eccentric working surface of the two shoulders of the lever in size smaller than the radius of the circle of the working S of the surface of the two shoulders of the lever or equal to zero can significantly reduce the course of the two shoulders of the lever when fixing the handle in the longitudinal direction, which increases the performance of the ski stick. Two-arm lever swing limiters allow locking

SUBSTITUTE SHEET (RULE 26) two-arm lever without turning it further than the working position, which also increases the reliability of ski poles.

The through hole in the handle allows you to significantly (on average up to 200 mm instead of 70 mm in the prototype device) increase the range of movement

And the handles without an additional increase in the mass of ski poles, which, in turn, expands the range of application of ski poles, for example, to use them for running "skeletal" style.

Performing a two-shouldered lever with a spring-loaded lever improves ease of use (there remains one manipulation of a finger to withdraw the two-shouldered Z lever from the contact surface or by pressing it against it).

The execution on the shoulder of the two shoulders of the lever in contact with the hollow rod, one or two side protrusions can increase the wear resistance of the contact surfaces of the two shoulders of the lever and the hollow rod.

3 Installing the latch on the two-arm lever and making recesses or grooves in the hollow shaft, into which the shoulder of the two-shouldered lever protruding above the handle in the upper extreme position of the handle has the ability to increase the reliability of fixing the handle in the longitudinal direction after some random movement

4 handles down (in relation to the plane of the drawing) for some reason, which in turn also increases the reliability of ski poles.

The presence on the hollow shaft of the limiters for the longitudinal movement of the handle upon contact of the working shoulder of the two shoulders lever with the external

5 the surface of the hollow rod increases the operational characteristics of the device.

Making recesses or holes on the inside or outside

SUBSTITUTE SHEET (RULE 26) the surfaces of the hollow rod increases the reliability of fixing the handle relative to this rod.

In FIG. 1 shows a device with the handle positioned in the upper extreme position.

/ In FIG. 2 shows a device with the handle positioned in the lowermost position.

In FIG. 3 shows a variant of the device with holes in the hollow rod.

Figure 4 shows a variant of the device with fixing the handle relative to the outer surface of the hollow rod.

Z In FIG. 5 is a section A-A of FIG. 4 (an embodiment in which the hollow rod has a cross-sectional shape different from that of the circle).

In FIG. 6 shows a device with a latch mounted on the working arm of the lever.

In FIG. 7 is a section BB of FIG. 6 (option with fixing the handle 5 relative to the inner surface of the hollow rod in the presence of lateral protrusions on the working shoulder).

The device consists of a hollow rod 1, a handle 2, a two-shouldered lever 3, the axis of the two-shouldered lever 4. The hollow rod 1 has a longitudinal slot 5 to accommodate the two-shouldered lever 3 and to fix the handle 2 from turning I _j around the axis of the hollow rod 1. The two-shoulder lever 3 is located in slots 6 of the handle 2 and has the ability to swing on the axis 4 installed in the handle 2.

The two-armed lever 3 has a shoulder 7 protruding beyond the limits of the handle 2, with which the fingers of the skier can interact, and ζ the working shoulder 8, which is able to contact respectively the inner 9 (Fig. L) or outer 10 (Fig. 4) surfaces of the hollow shaft 1. The working shoulder 8 has a working surface 11, made along a certain radius of curvature "r" (figure 2), which can be zero, while the radius of the curvature of the working surface R (figure 1) in size

SUBSTITUTE SHEET (RULE 26) more than the distance from the swing axis of the two shoulders of the lever 3 to the contact surface of the hollow rod H.

To improve ease of use, the two-arm lever 6 can be spring loaded with a spring 12.

/ To ensure a more reliable contact of the two shoulders of the lever 3 with the inner 9 surface of the hollow rod 1 in the embodiment of FIG. 3, holes 13 are made on the surface 9.

To increase the reliability of fixing the handle 2 with the hollow shaft 1, the shoulder 8 of the two shoulders of the lever 3 in the embodiment of FIG. 5 may have one or two

Z protrusions 14 located in the cavity 15 of the handle 2 and having the ability to contact the outer surface of the hollow rod 1, or protrusions 16 (Fig. 7), having the ability to contact the inner surface of the hollow rod 1. The longitudinal slot 5 in the hollow rod 1 has an extension 17 for mounting the shoulder 8 with the projections 16 in the hollow

5 rod 1.

To open contact with any surface of the hollow rod, a bracket 18 is mounted on the lever, into which the skier's finger can enter.

The latch 19 (Fig.6) and the bottom of the groove 20 (Fig.4), in which the protruding part of the two shoulders of the lever 3 is placed, serve to limit the value 4 of the accidental slipping of the handle 2 relative to the hollow rod 1.

To limit the range of working movement of the handle 2 in contact with the working surface 11 of the two shoulders of the lever 3 with the outer surface 10 are the stops 21 and 22 in the embodiment of figure 4.

To exclude the rotation of the lever 3 further working position in the 5 ^* version with an eccentric working surface 1 1 of the two shoulders of the lever 3 serves as a limiter 23 (figure 2).

The device operates as follows. To change the position of the handle 2 finger of the skier’s hand

SUBSTITUTE SHEET (RULE 26) in the bracket 18, acts on it and diverts the working surface 11 from the contact surfaces 9 or 10, removing the fixation of the handle 2. Next, by moving the hand up or down, the skier moves the handle 2 to the desired position and presses the same finger on the protruding part of the two shoulders jf of the lever 3 in the direction of contact of its working surface 11 or the protrusions 14 of the two shoulders of the lever 3, respectively, with one of the contact surfaces 9 or 10 of the hollow rod 1, fixing the handle 2 in a new position, which corresponds to the lengthening or shortening of the ski stick. The fixing of the handle occurs due to the fact that the radius

2 of the surface of the two shoulders of the lever greater than the distance from the axis of swing of the two shoulders of the lever to the contact surface of the hollow rod by a small amount.

If the two-arm lever 3 is spring-loaded, for example, by a spring 12, then finger manipulation is performed only in one direction. 3 When the two shoulders of lever 3 accidentally slip, the handle 2 is lowered insignificantly until the lock 19 stops at the end of the hollow shaft 1 or the protruding part of the two shoulders lever 3 in the bottom of the groove 20. In this case, the handle 2 is released and the lock 3 and the lever 3 are turned in the direction clockwise (relative to

I _{f of} the drawing plane) and leave the contact zone with the end face of the hollow rod 1 or with the bottom of the groove 20 and when lowering the handle 2 do not interfere with the subsequent operation of its fixation in the lower or any middle position, since the latch 19 enters the slot 5 hollow rod 1, and the protruding part of the lever 3 comes out of the groove 20. ζ- When skiing with the к skate ’style, a simultaneous push with sticks is made for each step or through a step. In the first method, both hands are at the same distance relative to the shoulder joints (both arms are in the lower position) and the push with both sticks is the same in efficiency.

SUBSTITUTE SHEET (RULE 26) When pushing with sticks through a step, the push with the stick that is farther at the moment of pushing is much weaker and shorter than the push of the adjacent stick (if you do not change the position of the handle) due to the lower wrist of the hand holding this stick, which means further from the shoulder ή joint.

When the handle 2 is moved upward by an average of 200 mm (depending on the athlete’s height), the hand holding the lagging stick becomes at the same level as the neighboring one, creating a push equivalent in effectiveness, which reduces the physical load on the skier and increases

2 running speed (especially on climbs).

The amount of movement of the handle 2 is limited by the length of the slot 5, which includes the two-arm lever 3, in one case, or by the stops 21 and 22 in the other, or by holes 13 or recesses (not shown) made in the hollow shaft 1 ..

3 The proposed device can be made directly in the rod of the ski poles or in the form of a nozzle to the rod of the ski poles.

The use of the proposed device in ski poles when running with the "skate" style, in addition to the above, improves the aesthetics of running, which is important for television broadcasts of ski or biathlon I _j competitions.

Check the effectiveness of the proposed device is very simple. To do this, it’s enough to take ordinary ski poles, but of different lengths, namely: to take in the hand, which is located on the side of the pushing leg, an average stick 200 mm longer (depending on the athlete’s height) and ς make a speedy climb (several times) on skis uphill, pushing sticks through a step, at a marked distance. Then make the same ski lifts, also pushing with sticks through a step, but with ordinary sticks of the same length and compare the results.

SUBSTITUTE SHEET (RULE 26)

Claims

Claim

1. A device for changing the position of the handle of a ski stick, containing a hollow rod, a handle with a longitudinal hole, containing in the upper part a longitudinal slot in which on the axis

/ a working element is installed, a part of which extends beyond the handle, means for fixing the handle against axial movement and elements preventing the rotation of the handle around the axis of the hollow rod, characterized in that the hollow rod is installed in the hole of the handle with the possibility of longitudinal movement, the working element is made in form

Z of a two-shouldered lever, the working surface of which has the possibility of contact with the hollow rod, forming a means of fixing the handle against longitudinal movement, while the radius of sweeping the working surface of the two-shouldered lever is greater than the distance from the swing axis of the two-shouldered lever to the contact surface of the hollow rod, and the elements excluding

3 rotation of the handle around the axis of the hollow rod, made on the hollow rod (on the one hand) and on the handle or on the two-arm lever on the other.

2. A device for changing the position of the handle of a ski stick according to claim 1, characterized in that the elements excluding the rotation of the handle of the ski stick around the axis of the hollow rod are longitudinal

4 a slot made in the hollow shaft and the shoulder of the two shoulders lever, which is included in this longitudinal slot.

3. A device for changing the position of the handle of a ski stick according to claim 1, characterized in that the elements excluding the rotation of the handle of the ski stick around the axis of the hollow shaft are the profile shape ζ of the outer surface of the hollow shaft and the holes in the handle in cross section that differs from the shape circle.

4. A device for changing the position of the handle of a ski stick according to claim 1, characterized in that the working surface of the two-shouldered lever is made in the form of an eccentric.

SUBSTITUTE SHEET (RULE 26)

5. A device for changing the position of the handle of a ski pole according to claim 1, characterized in that the radius of curvature of the working surface of the two shoulders of the lever is less than the radius of the overcast of this surface or equal to zero.

6. A device for changing the position of the handle of a ski stick according to claim / 5, characterized in that the two-armed lever has a rotation limiter that can contact the hollow shaft or the handle.

7. A device for changing the position of the handle of a ski stick according to claim l, characterized in that the hole in the handle for the hollow shaft is made through. Z 8. A device for changing the position of the handle of a ski pole according to

1, characterized in that the two-arm lever is spring-loaded in the direction of contact with the hollow shaft or in the opposite direction.

9. A device for changing the position of the handle of a ski stick according to claim 5 3, characterized in that the shoulder of the two shoulders of the lever in contact with the outer surface of the hollow rod, has one or two lateral protrusions, and the handle has one or two cavities, respectively to accommodate the protrusions.

10. A device for changing the position of the handle of a ski stick according to Claim 1, characterized in that the two-arm lever is equipped with a latch that is able to contact the hollow shaft in the extreme upper position of the handle.

1 1. A device for changing the position of the handle of a ski pole according to claim 3, characterized in that limiters ζ of the movement of the handle are installed on the hollow shaft.

12. A device for changing the position of the handle of a ski stick according to claim

2, characterized in that the shoulder of the two shoulders of the lever in contact with the inner surface of the hollow rod, has one or two side

SUBSTITUTE SHEET (RULE 26) protrusion, while the working surface of the two shoulders of the lever repeats the shape of the surface of the hollow rod in contact with it.

13. A device for changing the position of the handle of a ski pole according to claim 1, characterized in that the protruding shoulder of the two shoulders of the lever has the ability to contact with at least one recess or groove made in the hollow shaft.

14. A device for changing the position of the handle of a ski stick according to claim 1, characterized in that the shoulder of the two shoulders of the lever in contact with the inner or outer surfaces of the hollow rod has

2 the ability to enter when in contact with at least two recesses or holes made in the hollow rod.

SUBSTITUTE SHEET (RULE 26)