ES2297693T3 - BASTON FOR EXERCISES FOR SPORTS. - Google Patents

Abstract

An exercise stick (1) for athletes such as marchers, skaters or cross-country skiers, traveling on a terrain (9) in a direction of travel (L), where the exercise stick (1) comprises an elongated body of the cane ( 2), at least one wheel (41, 42) is attached to a lower end (12) of the cane body (2), said wheel allowing a directed rolling path of the exercise stick (1) on the ground (9), and the at least one wheel (41, 42) is provided with a reverse lock (8), which allows a rotation of the wheel (41, 42) in the direction of travel (L), but blocks it against the direction of travel (L), characterized in that at the lower end of the cane (12) there are present fixing means for reversible fixing of additional weights (71.1-71.4) and guide means (72) to guide the additional weights (71.1- 71.4) during assembly.

Description

Exercise stick for athletes.

The present invention belongs to the field of equipment for gymnastics and refers to a cane for exercises for athletes such as marchers, skaters or cross-country skiers, in accordance with the fundamental concept of the First patent claim.

The document US-B1-6 342 032 discloses a cane for exercises of that type.

The new sports discipline "Nordic walking "(Nordic walking) was originally developed as summer training method for high performance athletes in specialties such as cross-country race, biathlon and combination Nordic In recent years it has been becoming more and more popular. Currently a lot of people practice the "Nordic walking" throughout the year. Nordic walking It is also very appropriate for people who have suffered injuries, operations or diseases

The "Nordic walking" consists of a walk or run with two special canes that athletes they hold each one with one hand, therefore there is similarity between the technique to run when you practice the "Nordic walking "and the movement that is made when practicing cross-country race with skis. Nordic walking helps development of physiological diagonal movement, when walking or It runs consciously using the cane. In comparison with the Traditional walk or run without sticks, the advantage of the "Nordic walking" is that not only the legs are trained but also the musculature of the arm and torso. For this reason the body consumes more energy than walking or running the way Traditional and with the same speed.

The canes that have been used so far for The "Nordic walking" have usually been manufactured with fibers carbon or glass (30% of the cane with carbon compound) lo which guarantees its low weight, extreme load capacity and a Long useful life. Compared to canes with cores metallic, these other canes do not propagate to the joints of the hands, elbows and shoulders any kind of annoying vibration No overload. The optimal length of the cane is 70% of the height of the body. The special design of the handles ensures that the use of the canes for a long time do not cause fatigue. He lower end of the cane should enable the impulse that prints person. In order to respond to different types of terrain, the lower end of the canes can have rubber padding for smooth surfaces such as streets, asphalt or points of stone or metal For the forest, the field.

Despite what was described above for the lower end of the canes, the canes known for the "Nordic walking" still have the disadvantages, which slide on the surface and do not enable momentum. This is valid especially when it comes to hard, smooth terrain. When the canes slide, make the pace of the march impossible.

Therefore, the object of the invention is to follow developing the current "Nordic walking" canes for that facilitate momentum on any terrain and the walk or the career be fluid and rhythmic.

The object is achieved with the cane according to the invention, as defined in claim 1. In the secondary claims are presented embodiments advantageous

The Nordic walking canes are ultimately oriented always towards the bottom race with skis, in which the ski is carried on the snow and enter it continuously. The invention departs in a way radical of the traditional image of the cane for the race of background. It is based on the idea of providing the lower end of the canes with one or several wheels. Thus, the exercise stick of according to the invention always remains in contact with the ground. In this way, it is not necessary to lift it and return to fit it on the ground at every step. The end path The bottom of the cane is practically a movement of translation in place of a jumping movement, as is typical of canes already known. To facilitate the momentum, the exercise stick according to the invention it is provided with at least one wheel with recoil lock that allows the wheel to rotate when it advances but it blocks it if it goes back.

Therefore, the exercise stick of according to the invention, suitable for marchers, skaters or background runners, who move on a spot in a direction, has a longitudinal body of the cane. On one end of the longitudinal body of the cane there is at least one wheel that facilitates a rolling movement of advance on the ground. At least a wheel has recoil lock, which allows the rotation of the it rolls in the direction in which it is advanced but prevents it if it moves in The opposite direction.

In this document, for the term "wheel" any object that allows a rolling movement of Advance. Particularly, those that have shape of discs, rollers and cylinders.

Cane should be prevented from sliding backwards by driving it For this purpose it is particularly advantageous, for one part, that the lower end of the cane has a certain weight and, on the other hand, conceive the rolling surface of the wheels so that its coefficient of friction is as high as possible in relationship with the most dissimilar terrain imaginable. That way guarantees a friction force as large as possible between the wheel and terrain, which as it is known is a product of strength normal and coefficient of friction.

The invention revolutionizes the "Nordic walking "because it makes it more effective and at the same time more careful Thanks to the exercise stick according to the invention the movement of the athlete is more calm and fluid. The joints of the hands, elbows and shoulders receive less load The training effect can be raised and dose by adding weights to the sticks and / or arms. In comparison with traditional canes, weights added they lead to greater energy consumption, but the burden of joints are less, because that added weight is partly assumed the wheels. With the cane according to the invention they are eradicated the dangers of injuries to the marchers or runners who come behind, which were produced with the traditional cane because of the tips of the canes. The continuous contact with the ground gives to the athlete greater security. All these advantages, but about all the last one we mentioned, they have a special value when use the exercise stick according to The present invention.

In this document, the invention will be analyzed fundamentally taking as an example embodiments of the "Nordic walking". But naturally, the exercise stick according to the invention can be used for other types of summer sports, for example, skating or running background.

They are described in detail below. Examples of embodiment of the invention from the drawing. The Figure 1 (b) shows an example that facilitates the understanding of the invention, but which is not discussed in the claims. The Figures show the following:

Fig. 1 (a) a perspective view of the part upper and (b) a lower part of the exercise stick.

Fig. 2 a perspective view of different wheel locations on the exercise stick according with the invention

Fig. 3 a cross section of the blocking of recoil in the exercise stick according to the invention (a) with the freewheel (b) with the wheel locked, and

Fig. 4 a lower part of a form of implementation of the exercise stick according to the invention.

Figure 1 represents an example of a cane for exercises 1 in perspective views, where Figure 1 (a) shows the top and Figure 1 (b) Shows the bottom of the exercise stick. The body of royal cane 2 is preferably formed by several, for example, three, segments 21-23 that fit into each other in Telescope shape to facilitate a longitudinal adjustment. The opposite position of segments 21-23 can be immobilized by means of fixing rings 24, 25 provided with threads placed continuously. Alternatively, the exercise stick 1 may also have other means for longitudinal adjustment and immobilization, such as those known in The current state of the art. For example, the body of the cane 2 could be formed by two segments and be provided with a folding mechanism, which allows to fold both segments and of that way to reduce the length of the exercise stick 1. In the When using it, both segments would be stiff by suitable gear means, but at the same time so that they can be separated.

The body of the cane 2 can be made of carbon or glass fibers, as described by the current state of the technique. Other favorable materials such as metal, wood, bamboo or plastic. I don't know about exercise stick 1 it assigns a small weight of its own, and its carrying capacity and its swing capacity also have only one importance secondary, because with the exercise stick 1 the movement is performs more calmly and fluidly.

The upper end of the cane 11 has a handle 3 and a handle 31 as is known from the current state of the art. Regarding the ergonomics and quality of these elements 3 and 31, in the case of the exercise stick 1 according to the invention, less demands are placed than in the case of the rods of the current state of the art, because the cane for exercises 1 of according to the invention you don't have to get up and then fit on the ground, but simply crawls.

The lower end of the cane 12, in the example of figure 1, it is provided with two wheels 41, 42 placed at both sides of the body of the cane 2 on a common axis 5. The axis 5 is in a single-sided bearing 6 that rotates according to the direction of the L march; Figures 3 (a) and 3 (b) will allow deepen these characteristics. Through an element adapter 7, the bearing 6 is rigid when joined with the body of the stick 2. The adapter element 7 is designed preferably so that it can be placed in the different types of cane bodies 2 currently available and that are They can buy in the market. That way, also canes already old, that use the solution "Addon" or "Retrofit" they can become sticks 1, removing the lower end that ends in a point and replacing it with the adapter element 7 with bearing 6 and wheels 41, 42. Naturally, they are also possible other own solutions such as directly placing the bearing 6 in the body of the cane 2, that is, without an element adapter. In an alternative embodiment, the axis 5 can be fixed rigidly to the adapter element 7, while both wheels 41, 42 are each placed with a bearing on the shaft so that turn on one side only.

The lower end of the cane 12, including wheels 41, 42, axle 5, bearing 6 and the adapter element  7, is preferably provided with a greater own weight than the lower end of traditional canes. This increases the normal force F_ {N} that the exercise stick exerts on the terrain and helps the wheels 41, 42 adhere well to the ground. The proper weight of the lower end of the cane 12 can be, for example, in a range between 5 N and 100 N, preferably between 7 N and 50 N.

The rolling surfaces of the wheels 41, 42 they are made of a material that has a coefficient of friction \ mu_ {0} as high as possible according to the types of terrain provided, for example, asphalt, stone, gravel, earth, grass, sand, etc. This in turn increases the adhesion to the ground and It allows pushing the cane for exercises 1 without slipping. With with respect to a dry asphalt, the coefficient of friction \ mu_ {0} must be greater than 0.4 and preferably greater than 0.5, for a dry dirt road, greater than 0.3 and preferably greater than 0.4. The rubber seems to be an ideal material for the surface of rolling The wheels 41, 42 can be, for example, totally of rubber. The tread may or may not have a relief.

The friction coefficient F_ {R} is found by the formula

F_ {R} = \ mu_ {0} \ \ cdot \ F_ {N}

With the preferred values given above for normal force F_ {N} and the coefficient of friction \ mu_ {0}, when the asphalt is dry and due to the weight of the lower end of the cane 12, the friction forces F_ {R} they are between 3.5 N and 25 N, and may even have higher values. TO this must be added a component of the compression force F_ {D} (see Figure 3 (b)) that perpendicularly increases the normal force F_ {N} and also the frictional force F_ {R}, which It is with which the athlete is encouraged in the exercise stick 1. With lower ends of the 12 heavier cane and weights additional (see figure 4), can be greatly increased further friction force F_ {R}. In addition, adherence to terrain can improve if the rolling surfaces of the wheels 41, 42 are provided with appropriate reliefs, such as those They are known in the automobile technique.

The diameter of the wheel d, the distance between the wheels w and the number of wheels 41, 42 can be very different. In the case of sticks for exercises 1 according with the invention it is possible to adapt these parameters to the use provided. So, for use on paved roads - possibly where more will be used- smaller wheels would be selected 41, 42 with a smaller distance w between them while, on land not smooth, wheels 41, 42 would be larger, as would the distance w between them. The diameters d of the wheels, for example, can be in a range of 4 cm to 20 cm, preferably between 6 cm and 10 cm. The distance w between the wheels can be between 3 cm and 30 cm, preferably between 5 cm and 15 cm.

Taking as reference the forms of schematic embodiment depicted in figure 2 we turn to analyze the quantity and placement of the wheels on the cane to Exercises 1 according to the invention. The exercise stick 1 can have a single wheel or several, for example, up to eight. A Exercise stick 1 with a single wheel 41, as shown in Figure 2 (a) has as its advantages its great simplicity and the price convenience, although it does not offer lateral stability. Two wheels 41, 42, placed next to each other as shown in Figure 2 (b) or also in Figure 1, stabilize the Exercise stick 1 so it doesn't tip. In the example of embodiment of figure 2 (c) there are four wheels 41-44 in the direction of travel L, one behind the another, as it is known by the new skates called Inline Skates Figures 2 (d) and 2 (e) show combinations of wheels arranged next to each other and one behind the other 41-43 and / or 41-44. Naturally the exercise stick 1 according to the invention may have more four wheels for example, up to eight.

The body of the cane 2 should rotate in the plane which is perpendicular to the ground and contains the address of the L. In the embodiments of figures 2 (a) and 2 (b) this turn is inherent. In the embodiments of figures 2 (c) - (e) should be provided within the framework of wheel suspension 50 a special suspension 51 for the cane body 2 that would facilitate this turn. Knowing the invention, the specialist can build suspensions 51 appropriate.

With the help of figure 3, a 8 recoil lock important for the exercise stick 1 according to the invention. In the embodiment example of the Figure 1, the recoil lock 8 is incorporated into the bearing 6 and acts on the common axis 5 of both wheels 41, 42 joined rigidly to axis 5. Alternatively, axis 5 may be rigid and the recoil lock 8 placed between the axle 5 and the wheels 41 and / or 42. The embodiment example chosen here is a freewheel with closing sheave already known. Axis 5 is rigidly attached to an inner star 81, while a bearing sleeve 61 is rigidly attached to a guide roller ring 83. Between the inner star 81 and bearing sleeve 61 there are sheaves of closure 82, inserted into the corresponding grooves in the guide roller ring 83.

If as shown in figure 3 (a) the sportsman exerts a tensile force F_ {Z} with a component that does not disappear in the direction of march L on the body of the cane 2 and / or on the adapter element 7, then the sheaves of closure 82 are in a position that makes possible without impeding a rotation of the shaft 5 against the bearing sleeve 61. The wheels 41, 42 move forward pushed by the Athlete on the ground 9 in the direction of the L.

However, if as shown in the figure 3 (b), the athlete pushes the cane for exercises 1 and thus exerts on the body of the cane 2 and / or on the element adapter 7 a compression force F_ {D} in the opposite direction to the direction of travel L with a component that does not disappear, then the closing grooves 82 are compressed in the form of a wedge. In this position, rotation of axis 5 is prevented by friction against the bearing sleeve 61. It is therefore impossible to rollback of wheels 41, 42 and the athlete can push forward in the direction of march L.

Of course, others are also possible recoil locks 8 already known and that if necessary the specialist can adapt to the exercise stick 1 according with the invention Among other examples of recoil blocking suitable we can mention the ratchet free wheel (with wheel lock, ratchet mechanism), oppressor freewheel, wheel free of oppressor body, friction free wheel or free wheel toothed

The embodiment of Figure 4 allows the reversible clamp, provided in accordance with the invention, of additional weights 71.1-71.4 to the lower end of the walking stick 12. Additional weights 71.1-71.4 may be, for example, metal discs and also other forms such as rings or spheres Each metal disc 71.1-71.4 It has a through hole whose inner shape corresponds to the outer shape of the adapter element 7, so that it can be placed on the adapter element 7, where said the element adapter 7 goes through said metal disk. The through hole can be found in the middle of the corresponding metal disk 71.1-71.4, although it is not necessary to do so. At exemplary embodiment of figure 4, the through hole is eccentric on one edge of the metal disc 71.1-71.4. The advantage of this is that in the running position, in which the cane body 2 is not perpendicular to the ground but inclined forward (in the direction of travel L and / or in the direction of friction force F_ {R}), the center of gravity of the weights additional 71.1-71.4 and also from the end Bottom of the cane 12 are as deep as possible. Thus, before terrain irregularities, wheels 41, 42 recover the most fast possible optimal contact with the ground. So that the mounting and securing of additional weights 71.1-71.4 be the best, at the lower end of the stick 12 and / or in the adapter element 7 a lane 72 or other fixing and guide means. In addition, at the end bottom of the cane 12 and / or in the adapter element 7 (no represented) has fixing means for reversible fixing of Additional weights 71.1-71.4.

An additional weight 71.1-71.4 it can weigh between 5 N and 20 N, for example, 10 N. The amount of additional weights 71.1-71.4, for example, your weight total can be chosen according to the needs and capacity of Athlete performance A total weight of the lower end of the 12 stick from up to 200 N is absolutely real. With these weights additional 71.1-71.4, on the one hand, is increased plus normal force F_ {N} and also frictional force F_ {R}. Moreover, the additional weights 71.1-71.4 also increase the effect of training, which can be dosed individually. This opens new training possibilities that are not possible with the Use of traditional canes. The traditional canes are manufactured as light as possible so as not to overload the Joints of the athlete's hands.

Reference list

one

Exercise stick

eleven

Upper end of the cane for exercises

12

 Lower end of the cane for exercises

       \ vskip1.000000 \ baselineskip
    

2

Cane body

21-23

Cane body segments

24, 25

Fixing rings

       \ vskip1.000000 \ baselineskip
    

3

Mango

31

Handle

       \ vskip1.000000 \ baselineskip
    

41-44

Wheels

       \ vskip1.000000 \ baselineskip
    

5

Axis

fifty

Wheel suspension frame

51

Cane body suspensions

       \ vskip1.000000 \ baselineskip
    

6

Bearing

61

Bearing shirt

       \ vskip1.000000 \ baselineskip
    

7

Adaptation element

71.1-71.4

Additional weights

72

Rail

       \ vskip1.000000 \ baselineskip
    

8

Recoil lock

81

Inner star

82

Closing sheaves

83

Guide Roller Ring

       \ vskip1.000000 \ baselineskip
    

9

Ground

       \ vskip1.000000 \ baselineskip
    

d

Wheel diameter

F_ {D}

Compression force

F_ {N}

Normal strength

F_ {R}

Friction force

F_ {Z}

Tractive force

L

Direction of the march

w

Wheelbase

       \ vskip1.000000 \ baselineskip
    

\ mu_ {0}

Coefficient of friction.

       \ vskip1.000000 \ baselineskip
    

Documents mentioned in the description

This list of the documents mentioned by the applicant has been prepared exclusively for the reader's information and is not an integral part of the European patent document. It was made with great care; but the EPA assumes no responsibility for any errors or omissions .

Patent documents mentioned in the description

US 6342032 B1.

Claims (14)

1. An exercise stick (1) for athletes such as marchers, skaters or cross-country skiers, who they travel on land (9) in a direction of travel (L), where

the cane for Exercises (1) comprise an elongated body of the cane (2),

at least one wheel (41, 42) is attached to a lower end (12) of the body of the cane (2), said wheel allowing a directed rolling path of the exercise stick (1) on the ground (9), and

the at least one wheel (41, 42) is provided with a recoil lock (8), which allows a rotation of the wheel (41, 42) in the direction of travel (L), but blocks it against the direction of travel (L),

characterized because

To the extreme bottom of the cane (12) fixing means are present for the reversible fixation of additional weights (71.1-71.4) and guide means (72) to guide the additional weights (71.1-71.4) during assembly.

2. An exercise stick (1) according to claim 1, wherein the recoil lock (8) is designed as lock freewheel, ratchet freewheel, freewheel oppressor, freewheel body oppressor, friction free wheel or cogwheel freewheel 3. An exercise stick (1) according to one of the preceding claims, wherein the cane for Exercises (1) includes two, three or four wheels (41-44). 4. An exercise stick (1) according to one of the preceding claims, wherein the cane for Exercises (1) includes several wheels (41, 42), and two of the various Wheels (41, 42) are placed on a common axle (5). 5. An exercise stick (1) according to claim 4, wherein a wheelbase (w) of the wheels (41, 42) arranged on the common axle (5) are in a range between 3 cm and 30 cm, and preferably between 5 cm and 15 cm. 6. An exercise stick (1) according to one of the preceding claims, wherein the cane for Exercises (1) includes several wheels (41-44) and at minus two of the various wheels (41-44) are arranged one behind the other in the direction of travel (L). 7. An exercise stick (1) according to claim 6, wherein the exercise stick (1) contains a wheel suspension frame (50) in which the several wheels (41-44), and mounting means (51) for mount the wheel suspension frame (50) on the body of the walking stick (2), said mounting means (51) designed in a manner such that with the contact with the terrain of the various wheels (41-44), the cane body (2) can rotate in the plane, which is perpendicular to the terrain (9) and contains the address of march (L). 8. An exercise stick (1) according to one of the preceding claims, wherein the weight of the lower end of the cane (12) is in the range between 5 N and 100 N, and preferably between 7 N and 50 N. 9. An exercise stick (1) according to one of the preceding claims, wherein the surface of rolling of the at least one wheel (41, 42) provided with a lock of recoil (8) is designed in such a way that its coefficient of friction (\ mu_ {0}) with respect to dry asphalt is greater than 0.4, and preferably greater than 0.5. 10. An exercise stick (1) according to one of the preceding claims, wherein the surface of rolling of the at least one wheel (41, 42) provided with a lock of recoil (8) is rubber. 11. An exercise stick (1) according to one of the preceding claims, wherein a diameter (d) of the at least one wheel is in the range between 4 cm and 20 cm, and preferably between 6 cm and 10 cm. 12. A set for exercises for athletes such as marchers, skaters or cross-country skiers, who move on a ground (9) in a direction of travel (L), characterized by

a cane for exercises (1) according to one of the claims precedents and

pesos additional (71.1-71.4), where

the pesos Additional (71.1-71.4) are provided with a through hole, whose inner shape corresponds to the shape exterior of the lower end of the cane (12), so that the weights additional (71.1-71.4) can be held in the lower end of the cane (12), where they are crossed by the lower end of the cane (12).

13. A set for exercises according to claim 12, wherein the through hole is placed eccentrically in a region of the edge of the additional weight (71.1-71.4). 14. A set for exercises according to claim 12 or 13, wherein the additional weights (71.1-71.4) have the form of a plate, of a disk, a ring or a ball.