KR830002490B1 - Window of long distance sports shoes - Google Patents

Abstract

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Description

Window of long distance sports shoes

1 is a partial plan view of a sole according to the invention.

2 is a side view of the first degree sole.

3 is an enlarged view of the inner ends of the two tube portions forming a deformed support member compared to the first diagram.

4 is a bottom view of FIG.

5 is an exploded side view of the modified structure.

6 is an enlarged view of the support member used for the sole of FIG.

The present invention relates to sports shoes, in particular long-distance shoes running on a solid track. The window consists of a soft, elastically flexible material, mainly plastic, thickened wedge-shaped in the rear. The heel contact surface of the window is provided with a groove into which the support member which is open and elastically stretched toward at least one corner of the window can be inserted. Often multiple support members are inserted into the same groove adjacent to another.

Support members have effective sole flexibility in the area of the heel contact surface that can be replaced and adapted to the racer's personal needs and tracks (FIG. 1).

The invention also relates to the window of a long-range sports shoe that is thickened rearward from the shank forming the heel wedge.

For many years it was common practice to provide a rounded part in the heel of a running shoe or racing training shoe that ensures a rolling-off process of the legs, thereby extending straight into the sole to improve the ability of the racer.

These rounds are suitable for competitions held on plastic tracks, especially for short and mid-range races, because these trainings allow the racer to stretch out to improve their ability so that the front contact of the window is relatively far from the rolling off process. This is because the heel does not touch completely. However, it has been found that in long distance races, the racer's power is generally not sufficient, and the heel does not come into contact under full load, so that the round part has an unfavorable effect or, in extreme cases, an overload on the heel. . Such detrimental effects are particularly long distances and are particularly evident in long distance races such as marathon races involving general road courses. When the heel contact is rounded to the window, the hard floor surface causes inelastic elasticity to be used incompletely, and the racer is prone to shock at the heel bone, making him tired early and noticeably less capable. Similar reasons apply to running shoes or training shoes used by, for example, in the range of weight loss by an inexperienced racer, since such people generally do not have special knowledge of the techniques of running to take this problem into account.

Several solutions have already been proposed to mitigate vibrations and shocks, especially while running on hard tracks. For example, sports shoes of the kind described above are known to have an air buffer chamber formed in the heel portion of the window and closed by a valve. The air buffer chamber elastically absorbs and mitigates vibration or shock by compression deformation. The provision of relatively thin insoles of very soft and flexible materials is believed to have the same advantages.

However, known structures have significant drawbacks for performing adequate buffering. It is the heel of the window that is compressed so that the racer doesn't feel the richness conveyed to him and the track he needs to achieve his full potential. Indeed, the early tiredness of a racer is similar to the use of an excessively soft spear that is undoubtedly having a good cushioning effect.

The present invention therefore proposes, on the one hand, a sports shoe window that actually mitigates the shocks and vibrations that occur during a particularly hard track and prevents unhealthy effects on the heel without thereby compromising the racer's ability. The purpose is to. At the same time, however, it should be possible to use the same window of relatively soft material for this purpose or to adapt to other ground conditions, for example frosty ground or asphalt.

The invention provides that an outsole consisting of at least one groove in which the area under the contact surface of the heel is generally parallel to the contact surface and extends transversely on the longitudinal axis of the window is opened at at least one side edge of the window and at least one support member is exchanged therein. It is proposed that it can be inserted in such a way that the support member can be elastically compressed when the contact surface is under load.

Therefore, the present invention is based on the assumption that the selection of a suitable support member can change the softness of the bowel itself. In this way, it is possible to adapt to the racer's needs without difficulty, considering the ground characteristics, regardless of its weight or the softness of the window. If a relatively strong support member is used the outsole will be given a relatively high strength. On the other hand, when using a support member that can be elastically deformed relatively easily, the increase in the apparent window strength is not very large. For example, the bowel may be a foam material having a relatively low Shore Hardness, for example about 35, i.e. polyurethane foam. Depending on the nature of the support member used, the apparent shore strength of the window can be significantly increased, ie up to 85. The support member may be of any possible material. For example, PVC, polyethylene, polyamide and especially nylon are also suitable.

However, the support member may also be made of a suitable metal, ie a suitable sheet metal. The application of the support member to the window is simple because the grooves open laterally. In general it is only necessary to insert the support member properly from the side. By selecting a suitable color, the weight range in which the unique support member will be used can be made visible. For example, darkening colors is considered as the weight of the determined racer increases.

The support member is advantageously made of a hollow member of elastically bendable material, thereby saving material and facilitating a simple adaptation to a specific load.

In order to change or apply the spring properties, it is possible to make the hollow member suitably, in particular by providing grooves, ribs or the like in the hollow member, whereby the bending line is deformed.

A particularly simple but also preferred structure of the window according to the invention is that the heel wedge is generally provided with a number of parallel transverse holes into which a tubular support member can be inserted. Considering the wall thickness it will be known that the tubes have the highest relative strength and therefore use the least possible material. Moreover, the special part of the tubular support member does not need a groove. One of the advantages of using multiple tubular support members is that under certain circumstances the strength of the window can be chosen incorrectly in the region of other support members by inserting another tubular support member into the hole.

The insertion of the tubular support member is easy when the horizontal holes are open at both ends and the tubular support members are divided horizontally into two parts, the two parts of which can be inserted into the associated horizontal holes from the opposite side of the window, and in operation, near the inner end. Can be connected to.

However, the support members may be configured incorrectly. Thus, the support members may be in pieces and as support elements, at least one of which is an elastic ring which can be filled into the peripheral grooves at the distal end of the support member and at the other end a collar or similar which can be filled in the peripheral grooves. It becomes an elastic ring. If lateral holes are provided and the support members are used relatively softly, i.e. by a light weight person, it is conceivable to use, for example, a spiral support member of plastic material or metal. Such a support member can thus be fixedly screwed into the transverse hole from the side. Although a large number of parallel support members are provided mainly in the window, it is conceivable that a particular application would provide only a properly formed support member that would be able to be inserted into the groove from the heel end of the window rather than the side, but in that case a suitable installation would certainly be grooved. Should be made to close.

Other features, details and advantages of the invention will become apparent as the following description of the preferred embodiment with reference to the drawings.

The window shown in FIGS. 1 and 2 shows a wear-resistant material, i.e. an actual outsole 1 of cured rubber and a relatively soft material, ie a wedge 2 of polyurethane foam having a shore hardness of about 35. It consists of part 3 to form.

The heel portion 3 is securely connected to the outsole 1 by means of a suitable device, ie an adhesive. Outsole 1 of the illustrated example is also provided with stud 4.

In the area under the contact surface 5 of the heel, the window shown has three transverse holes 6 extending from the side edge 7 of the window to the other side edge 8, the transverse holes 6 each having a groove 9 at the side edges 7, 8 of the window. Ends in the vicinity of.

Incidentally, the same groove 10 is provided at the rear end of the window.

In the embodiment shown, the tubular support members 11 are each inserted in the transverse holes 6 and are composed of a suitable plastic material, namely P.V.C, polyethylene, polyamide or special nylon. It is also conceivable to use metal as the material of the support member.

Each support member 11 consists of two tube portions 12 and 13 with outer ends having annular flanges 14 abutting sidewalls 7 or 8 of the wedge material 3 in the groove 9 region.

The inner ends of the tubes 12, 13 are configured such that they are connected to each other. For this purpose the tube 12 is provided with a reduced inner cross section 15 abutting the inside of the tube 13 outwardly with an annular bead 16, the annular bead having a reduced inner cross section 15 of the tube 12 to lock the tubes 12, 13. It is possible to abut the annular groove 17 provided on the inner wall of the tube section 11 during intermittent insertion, the annular bead 16 abutting a suitable annular groove 17 according to the required length of the support member 11.

In the two left support members 11 of FIG. 1, the annular bead 16 abuts the second annular hole as seen from the inner end of the tube 13, while the locking in the even support member occurs in the fourth annular groove whereby the entire rain support member Is considerably shorter, equal to the narrower width of the window or wedge 3.

For insertion of the support member 11, the tubes 12 or 13 enter into the transverse holes 6 from their respective ends and then into the annular beads 16 and the appropriate annular grooves 17, into the annular grooves 14 where the tubes 12 and 13 abut the side walls 7, 8. Compresses very hard during submersion until well seated in transverse hole 6.

If the support members 11 are to be replaced, the pipe parts 12 and 13 must be separated and drawn out of their respective transverse holes. For this purpose, the tubes 12, 13 may be provided with easy to handle elements, i.e. holes not shown or the like.

If the annular flange 14 protrudes sufficiently beyond the periphery of the pipes 12 and 13, the latter can also be caught by the annular flange 14 itself.

The appropriate tubular support member 11 is inserted according to the weight of the user and the strength of the window required by the two. The 'strength', or deformability, of the support member can be given by selecting a suitable material and by changing the wall thickness and also by taking the appropriate form. For example, the 'strength' can be reduced by providing a groove, which also extends helically.

An increase in strength can be achieved, for example, by the water tissue or rib tissue or the like.

3 and 4 show another embodiment connecting the inner ends of the tube sections 12 ', 13'. In Figures 3 and 4, the tube part 12 'can be reduced again at the inner end 15' and pushed into the inner part of the other tube part 13 '.

The coupling between the two tubes 12 'and 13' has the nature of a forced connection. The reduced cross section 15 'of the tube 12' for this purpose consists of two axial grooves 18 in which the radial locking grooves 19 extend in the same circumferential direction. These locking grooves 19 are the locking elements of pin 21, which may cross the inner 20 of the other end 13 'and may be metal if the end 13' is plastic.

For locking purposes, the inner ends of the tubes 12 'and 13' in FIGS. 3 and 4 are pushed in their respective sufficient lengths and the pins 21 are axially grooved by rotating the tubes 12 'and 13' relative to each other. Locking is achieved by entering one of the locking groove pairs 19 extending laterally from 18.

Since the plurality of locking grooves 19 are provided again in different axial directions, the pipe parts 12 ', 13' can be connected in different axial directions, whereby the length correction can be made in the same manner as described with reference to FIG.

In the embodiment of Figures 3 and 4, the pipe sections 12 ', 13' should be provided with suitable fastening devices for rotating the instrument at the outer ends. For example, they can install a screwdriver in their outer ends. You can also make a head at the outer edge of the inner or outer polygon.

In the same way as the window from FIGS. 1 to 4, three transverse holes 6 are provided in the region of the contact surface 5 of the heel in the case of FIG. 5, with the holes 6 extending from one side edge 7 to the other. The transverse holes 6 are placed adjacent to the groove 9 of the side edge of the window and end there.

The tubular support member 11 ′ is inserted into the transverse holes 6, one of which is shown in FIG. 8. The support member 11 'is the length of the corrugated longitudinal section of the plastic tube so that a circumferential groove is provided over the entire length. The length of the tube is such that, after being inserted into the transverse hole 6, both ends 23 and 24 protrude very far from the hole of the transverse hole 6 so that at least one circumferential groove 22 is completely disposed beyond the transverse hole 6. An elastic ring 25a or 25b of rubber or the like enters this circumferential groove 22 and is firmly in contact with the bottom of the groove and secured by the groove 22. 6 shows another embodiment 25a and 25b of a ring cross section. It is clear that any other form of elastic ring can be selected for the same purpose. The only fact necessary is that even after being filled to the sides of the rings 25a, b, they protrude far enough beyond the circumferential surface of the tube to achieve contact and also support effects on the side of the edge of the window.

Prior to insertion into the transverse hole 6, the tube 11 ′ may be provided with a lubricant such as Vaseline that slightly accumulates at the bottom of the groove 22. In this way the insertion of the tube is very simple.

It is possible to make within the scope of the invention from the illustrated circular cross section of the tube 11 'as well as in the form of grooves of other variations. It is also sufficient to just provide a groove in the end 23 or 24 of the thickness on which the rings 25a, b are placed. Furthermore, it is possible for one end of the tube 11 'to be provided with a collar in which the elastic rings 25a, b need to be filled only at one end 23 or 24, for example by protruding beyond the outside of the grooves 22, for example by lateral unions. Do.

Claims (1)

The contact surface of the heel, in sports reinforcement of flexible elastic material, mainly plastic, and thickened rearward from the shank to form the heel wedge, especially for long distance sports shoes on the hard track. In the area below, the support member, which extends transverse to the longitudinal axis of the window, is open at at least one corner 7, 8 of the window and can be inserted so that at least one support member 11, 11 ′ can be replaced, A spear of a long distance sports shoe, characterized in that the heel wedge (2) consists of at least one groove (6), which can be elastically compressed or elastically bent when the contact surface is loaded.

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