EP0710495B1 - Roller skate - Google Patents

Abstract

The shoe comprises a sole (2) which has a rigid front (5), a flexible central (6), and a rigid rear section (7). The front section mainly supports the contact area of the front, and the rear section mainly supports that of the rear. The front rollers (3) rotate in one direction only, and are blocked in the other direction. The front and rear sole sections have a flat under surface. Front and rear rollers (3,4) are evenly distributed in the sections. The flexible central section is arched upwards. The rear rollers rotate freely below a weight limit, and have increased rolling resistance above that limit.

Description

The invention relates to a biodynamic roller glider with the features of The preamble of claim 1.

From the prior art of DE - A - 28 21 644, from which the invention is based, is known a roller glider that is not only used in sports, but also one therapeutic treatment is used if muscle or bone malformations and especially posture damage to legs or feet. Such damage to posture on the feet are due, among other things, to insufficient exercise Attributed to foot muscles.

With a healthy foot, the body weight starts from the hip joints spread the knees down over the upper ankle on the foot. A healthy one Foot that shows no anatomical deformities is standing on the heel bone between 50 and 90% of the total load and on the midfoot and forefoot between 10 and 50% of the total load. When walking, the Power distributed by the legs to the heel is dynamically distributed on the forefoot. So a healthy foot is created by a biodynamic balance the shape of the individual foot bones as well as the muscle pull is produced, kept permanently under load.

About 70% of the population has a so-called sagging deformity. As The causes of this are congenital weakness of the connective tissue, insufficient foot training, permanent walking on hard ground and permanent walking on firm ground Footwear known. The buckling deformity occurs already in infancy and finds its full expression in adults. As shown in Fig. 4, the normal deviation of the rearfoot axis from the vertical is 0 to 6 °, as shown in Fig. 4a. However, this rearfoot axis gives way to the kink-flat foot by more than 6 ° from the vertical, with deviations of 10 °, as shown in Fig. 4b is shown, or even up to 20 ° are possible. As a result of the inward tipping The rear arch also lowers the arch of the foot, creating a classic Sunk foot is created, in which almost the entire lower surface of the Is in contact with the ground.

As a therapeutic measure, pediatric gymnastics is used in early childhood Exercises counteracted the kink-flat foot. It refers to

Exercises in the tiptoe and heel, gripping exercises and extension exercises in the toes. This previous kink-presser therapy through Physiotherapy exercises usually include one to several times a week Practice with a physiotherapist and daily home practice. However, these exercises have the disadvantage that they do not last for several years be persevered, on the one hand the parents do not have the necessary stamina own and on the other hand the children themselves have so little fun with the Exercises have that through a defensive behavior caused thereby another Practice is made impossible.

Another therapeutic measure to improve the arch of the foot is the Provision of tailor-made deposits. These are usually every six months ordered and supported by the doctor depending on the state of growth of the foot the arch of the foot during the entire growth phase. However, this therapy is a passive measure and does not promote the person responsible for the deformity or jointly responsible muscle growth, on the contrary, it creates rather a rest of the muscles, because the arch of the foot additionally through the insoles is supported.

The roller gliders mentioned at the beginning can also be used as a therapeutic measure can be used as running with roller gliders is a training for the leg and on the one hand Represents foot muscles, on the other hand an interesting leisure activity for the children enables so that such therapy even over a long period is held out.

The from the prior art of DE - A - 28 21 644, DE - U - 87 11 944, the DE - A - 23 04 853 and DE - A - 22 50 201 known roller gliders have rigid Soles on. You will only insufficiently meet the need for the foot used as a complicated organ for control. Instead, they essentially become controlled from the thigh and lower leg muscles. In particular, they do not allow selective loading of individual foot sections.

A roller skate (DE - B - 1 117 013) in the form of a roller skate is known, in which the Storage of the rollers directly in the base plate consisting of sole and heel of the shoe is used. The footplate consists of two over a central one Articulated area longitudinally interconnected sections, namely one Sole and a heel. Each section has a projecting flexible sliding member on, the two sliding links overlap and are secured by a clamping screw connected to each other, thus forming the joint area. So that is in the Between the sole and heel there is a flexible middle sole section. The runner moving with this roller glider experiences one of the usual in the foot Walk or run like gear shifting.

Also the previously known, further known roller glider with a flexible middle sole section has not yet met all of the requirements of an investigation can perform therapeutic treatment of the deformity of the sinker.

Finally, it is from the general prior art of Roll gliders naturally known that one in the rear foot area of the roll glider Provide a braking device with a brake shoe hitting the road can to allow active braking by the user.

The present invention is therefore based on the problem of the above-explained to design and develop known roller gliders such that at Using the roller glider all foot sections can be loaded individually, so that a therapeutic treatment of the knee-deformity deformity is possible.

The task outlined above is with a biodynamic roller glider Features of the preamble of claim 1 by the features of the characterizing Part of claim 1 solved.

Movements in the forefoot and rearfoot area can reduce the strain on the individual Sliding surfaces can be designed selectively. The rolling movement of the invention Roll glider can be controlled by the foot muscles. It is therapeutic Effect that is effective in the case of buckling deformity.

The rollers are arranged in the sole sections so that in each case in the area of A gliding surface is created in front and rear of the foot, which is in any case so stable that no balance problems arise. This is a particularly safe sliding roller possible, so that even children at a young age the roller glides according to the invention can use. The roles are designed in a special way. The front rollers (at least one of them) are only in one direction rotatable while blocking in the other direction. This is only one Rolling in the forward direction is possible, but pushing off, i.e. accelerating, because of the blocking of the rollers very simple, so that the forward movement of one Skidding has strong similarities to normal walking.

Furthermore, the rear rollers in the rearfoot area can be dynamic according to the invention be provided with a braking effect. This is ensured by the fact that the rear rollers have a rolling resistance depending on the weight load have, the rear rollers below a weight load threshold roll freely and above this weight load threshold an increased rolling resistance exhibit. This means that if the rear foot is too heavily loaded a braking effect arises and that, on the other hand, with a lower load on the Free roll gliding possible on the rear foot, for example half the total load is. Thus, a load on the forefoot is forced while driving avoiding putting on the rear foot in the shoe. This will make one Strengthening the arch-stabilizing foot muscles achieved. In particular, be the flexors (lower leg flexors, foot flexors) specifically strengthened.

When braking, the forefoot must be raised again around the rear casters load more and thus to bring about the braking effect. This will the extensors are particularly strengthened. In addition, the attitude corresponds when freely sliding the posture when downhill skiing and therefore leads additionally for an ideal strengthening of the entire leg and trunk muscles. The roller glider is therefore also an ideal training tool for cross-country skiing.

According to the invention, the weight load threshold is also in the rear rollers adjustable so that the braking effect is set depending on weight and training can be.

Finally, with the roller glider according to the invention, the use of a low shoe an advantage, because it allows a much greater mobility of the foot is. This also serves to train the foot muscles and thus increases the therapeutic options because the control of the roller glider is even stronger from the foot and not just from the thigh and lower leg muscles. The risk of twisting with this roller glider is low because the rollers in the area the contact surfaces of the forefoot and the rearfoot gliding surfaces, not only Form sliding lines and because the center of gravity is low.

Fig. 1

in einer Seitenansicht ein erfindungsgemäßes Ausführungsbeispiel eines Rollgleiters,

Fig. 2

in einer Ansicht von unten den in Fig. 1 dargestellten Rollgleiter,

Fig. 3

eine schematische Darstellung des Bewegungsablaufes der aus drei Abschnitten bestehenden Sohle während der Verwendung des Rollgleiters,

Fig. 4

eine Ansicht von hinten eines rechten Fußes zur Darstellung der Rückfußachse.

The invention will now be explained in more detail with reference to the description of individual exemplary embodiments and with reference to the drawing. In the drawing shows

Fig. 1

a side view of an embodiment of a roller glider according to the invention,

Fig. 2

in a view from below the roller glider shown in Fig. 1,

Fig. 3

1 shows a schematic representation of the movement sequence of the sole consisting of three sections while the roller glider is in use,

Fig. 4

a rear view of a right foot to show the rear foot axis.

Fig. 1 shows a side view of an embodiment of a biodynamic Roll glider, which has a shoe 1 with a sole 2. In the forefoot area of this Roll gliders are arranged front rollers 3 so that they form a sliding surface. In Similarly, rear rollers 4 are arranged in the rear foot region of the sole also form a sliding surface. The sole 2 has three sections, namely one start front sole section 5, a more flexible middle sole section 6 and a rigid rear sole section 7. The terms "rigid" and "flexible" are natural not absolutely understandable. One can click here on the definition of sole rigidity generally use shoes. It is also clear that the flexible middle sole section often only from one to the front sole section immediately following bending strips will be formed, so that the angular position between the front and rear sole sections on a relatively short Piece of the sole is realized. This is also common for sports shoes Technology. Otherwise, a correspondingly narrow bending strip also occurs even frequently, although the middle sole section is broader overall and overall is flexible.

Similar to a normal shoe, the front sole section 5 and the rear sole section 7 is movable relative to one another, since the flexible middle Sole section 6 allows the front sole section 5 and the rear Sole section 7 at different angles to one another depending on the load on the shoe can take.

The different sole sections 5, 6 and 7 of the roller glider are now as follows designed. The front sole section 5 is essentially on the contact surface adjusted the forefoot so that the front sole portion 5 the forefoot fully supported. Likewise, the rear sole section 7 is essentially on adapted the contact surface of the rear foot so that the rear sole portion 7 the Hind foot supports. The front sole section 5 forms a bottom flat surface so that the front rollers arranged in the front sole section 5 3 can be arranged such that the front rollers 3 have a sliding surface form. Similarly, the rear rollers 4 are in the rear sole section 7, which also has a flat surface on the underside, arranged flat. In the illustrated embodiment, the rollers 3 and 4 are formed Sliding surfaces approximately as large as the respective undersides of the corresponding ones Sole sections 5, 7. But that doesn't have to be the case. Basically enough for the flat Support forefoot and hindfoot in the forefoot area three roles that in are arranged in a kind of triangle or maybe even just two roles like one normal roller skate, two roles in the rear foot area or a particularly wide single one Role that also has a flat effect.

As can also be seen in FIG. 2, the shape of the flexible middle sole section is 6 to the shapes of the front sole section 5 and the rear sole section 7 adapted so that all sole sections 5, 6 and 7 together one continuous sole 2 form.

As shown in Fig. 1, in the preferred embodiment is the flexible one middle sole section 6 arched upwards, so that the middle sole section 6 creates a shape of the entire sole 2, which is adapted to the foot. However, it is it is also possible to design the middle sole section 6 as a flat section, so that the lower surfaces of the front sole portion 5, the flexible middle Sole section 6 and the rear sole section 7 in the unloaded state essentially lie in one plane.

3, the sole 2 having the three sole sections 5, 6 and 7 is for different ones Stages of movement during roller gliding are shown schematically. 3a shows the sole 2 in the unloaded state or in the state of standing, that is in a state in which the front sole portion 5 and the rear sole portion 7 are equally loaded and thus both over the roles, not shown to be in contact with the ground. 3b shows the arrangement of the sole sections 5, 6 and 7 in a state in which only the front sole portion 5 is charged. This condition occurs especially when during roller sliding pushing backwards occurs. This is particularly advantageous Effect of the flexible middle sole section 6 clearly. Because how when walking with normal shoes, the rear sole section 7 is raised, while the front sole section 5 largely in contact with the ground stands. At the same time, at least one roller 3 is in the front sole section 5 blocked against reverse rotation. This means that the roller sliding with the invention Roller glider enables a similar movement sequence as it does with Walking with normal shoes is the case. Finally, the rear sole section faces 7 in the arrangement of the sole sections 5, 6 and 7 shown in FIG. 3c Contact with the ground while the front sole section 5 is raised is. This attitude is adopted especially when braking the roller glider, as described in detail below.

In the roller glider according to the invention, the movement of the roller gliding is thus started approximated the movement of walking in a normal shoe. In comparison was with the roller gliders known from the prior art, in which the front Rollers can be rotated in both directions, pushing off, i.e. accelerating, only possible by turning the foot outwards, similar to the case with Ice skating is possible for ice hockey players. With the design of the front Roll 3 is thus a forward push possible in a manner such as with ice skates used for figure skating, whose runners have spikes at the front end that do not push forward allow the feet to twist outwards.

The rear rollers 4 here have one that is dependent on the weight load Rolling resistance. The rear rollers 4 can be below a weight load threshold roll freely, but above the weight load threshold have increased rolling resistance. This will make it even Distribution of the weight load on the forefoot and the hind foot during the Roll sliding forced.

As described above, there is a cause of buckling deformities in that the hind foot is too heavily loaded and the forefoot too weak. are now the rear rollers 4 are designed such that they are above a weight load, which, for example, corresponds to 50% of the total weight load, an increased Have rolling resistance and thus brake, a runner is forced to put more pressure on the forefoot and relieve the back foot, so as not to interfere roll forward. As already described above has strengthened the arch-stabilizing foot muscles generated. On the other hand, an appropriate weight load on the hind foot can a braking process can be caused without, for example, twisting of the foot to the outside and a resulting grinding of the rollers the surface is necessary as a brake. Basically, others can also Realize braking devices, for example those known from normal roller skates Brake pads on the rear edge of the rearfoot area.

The entire sequence of movements is the sequence of movements during roller gliding largely adjusted when walking in normal shoes. Because it becomes like normal If the foot twists outwards, be it to push it off or to Braking, avoided. In addition, there is a proper load on the forefoot and the rear foot forced by the rolling properties of the rear rollers 4. The roller glider according to the invention is therefore particularly suitable for therapeutic purposes Treatment of articular deformities.

In a special embodiment, the distance between the rear rollers 4 and the rear sole section 7 changeable, the distance depending of the weight load. For example, there is a spring between the rear rollers 4 and the rear sole portion 7 arranged depending a change in the distance between the rear from the weight load Rollers 4 and the rear sole section 7 allows. This is a reduction the distance of the rear rollers 4 to the rear sole section 7 above the weight load threshold as far as possible that the rear rollers 4 on friction surfaces issue. The friction created by this increases the rolling resistance the rear rollers 4, so that there is a braking. Instead of one A spring in the narrower sense can also be an elastic element, for example a rubber buffer or a buffer made of another elastic material on a corresponding one Be used.

Furthermore, in the embodiment, the distance between the rear rollers 4 and the rear Sole section 7 adjustable using an adjusting screw. Thus, the Weight load threshold can be set in a simple manner, so that depending the braking properties of the weight and training condition of the runner to be treated the rear rollers 4 can be adjusted. Particularly preferred A weight scale is assigned to the setting screw for this setting, which enables a reproducible adjustment of the weight load threshold.

In the exemplary embodiment of a roller glider shown in FIG. 1, the shoe is 1st designed as a shoe. Because because of the low center of gravity caused by the Arrangement of the rollers 3 and 4 in the sole 2 is caused, and because of caused by the distribution of the rollers 3 and 4 large sliding surfaces The risk of twisting during roll sliding is greatly reduced, making it a special one Ankle support is not necessary. When using a The shoe, however, causes greater mobility of the entire foot, which in turn accommodates the movement therapy of the foot. Of course the shoe can also be designed so that it is over the ankle extends to support the ankle.

Claims (12)

1. A biodynamic roller skate having a shoe (1), having a sole (2) disposed on the shoe (1), having front rollers (3) which are disposed in the front foot region in the sole (2) and which form a gliding face, and having rear rollers (4) which are disposed in the rear foot region in the sole (2) and which form a gliding face,
   characterised in that

   the sole (2) comprises a rigid front sole section (5) and a rigid rear sole section (7), between which a flexible middle sole section (6) is disposed,

   that the rigid front sole section (5) substantially supports the contact face of the front foot and that the rigid rear sole section (7) substantially supports the contact face of the rear foot,

   that the front rollers (3), or at least one of the front rollers (3), can only rotate in one direction and lock in the other direction.
2. A roller skate according to the preceding claim, characterised in that the front sole section (5) and the rear sole section (7) form a flat face on the underside.
3. A roller skate according to either one of the preceding claims, characterised in that the front rollers (3) and the rear rollers (4) are each disposed distributed in a plane in the front sole section (5) and in the rear sole section (7), respectively.
4. A roller skate according to any one of the preceding claims, characterised in that the flexible middle sole section (6) is arched upwards.
5. A roller skate according to any one of the preceding claims, characterised in that the flexible middle sole section (6) is formed only by a bending strip which directly adjoins the front sole section (5).
6. A roller skate according to any one of the preceding claims, characterised in that the lower faces of the front sole section (5), of the flexible middle sole section (6) and of the rear sole section (7) substantially lie in one plane in their unloaded state.
7. A roller skate according to any one of the preceding claims, characterised in that the rear rollers (4) have a rolling resistance which depends on the weight loading, and preferably that the rear rollers (4) roll freely below a weight loading threshold and have an increased rolling resistance above the weight loading threshold.
8. A roller skate according to any one of the preceding claims, characterised in that the distance between the rear rollers (4) and the rear sole section (7) is variable, and that the distance between the rear rollers (4) and the rear sole section (7) is preferably set depending on the weight loading.
9. A roller skate according to any one of the preceding claims, characterised in that a spring or an elastic element is disposed between the rear rollers (4) and the rear sole section (7), and depending on the weight loading effects a variation of the distance between the rear rollers (4) and the rear sole section (7).
10. A roller skate according to any one of the preceding claims, characterised in that above the weight loading threshold the distance from the rear rollers (4) to the rear sole section (7) is reduced to the extent that the rear rollers (4) are each seated against a frictional face.
11. A roller skate according to any one of the preceding claims, characterised in that the distance from the rear rollers (4) to the rear sole section (7), and thus the weight loading threshold, can be adjusted by means of an adjusting screw, and in particular that a scale, particularly a weight scale, is associated with the adjusting screw.
12. A roller skate according to any one of the preceding claims, characterised in that the shoe (1) is constructed as a below-the-ankle shoe, or that the shoe (1) extends beyond the ankle.

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