DE2003478A1 - Sole and heel made of rubber or plastic - Google Patents

Description

2003479

Case 64ο1

GERMAN SEMPERIT GUMMIWERK GES.M.B.H.

SOLE AND HEEL IN RUBBER OR ARTIFICIAL STOP

The invention relates to a sole and / or a heel made of rubber or plastic, in particular made of polyurethane, with a preferably roughened or finely profiled running surface, which is interrupted by grooves to increase the grip. . ·

The most varied of profiling of shoe soles has become known. So far, when choosing the shape of the profile primarily on the grip, but less on the strength of the sole. So show a whole Number of sole profiles on essentially continuous transverse grooves. In these designs, the sole is through the transverse grooves stressed the weakened area when walking on kinking. These areas are therefore particularly susceptible to cracking.

Another problem, especially in the case of soles made of relatively low-viscosity "foamable polyurethane mixtures" that are injected onto the shoe, consists in the fact that when injecting into the, sole mold under only slight pressure, the material becomes insufficient distributed and different sections of the sole shape in general

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not or insufficiently filled out. It is special on the tread edges of the tread area of the sole to form air bubbles. The material flow is thereby through an unfavorable profile "slowed down".

The subject of the invention is now a sole with a profiling in which the above-mentioned disadvantages are avoided are and the flow of material is not slowed down, but on the contrary evenly distributed over the entire sole area will. At least one is in the paragraph on the one hand, and on the other hand in the sole, at a distance from its edge, above its entire respective length and provided extending substantially in the longitudinal direction of the shoe longitudinal rib. Of this The longitudinal rib is now based on transverse and / or oblique ribs that extend from it and from the sole center line in the direction of the toe of the shoe or branch off at an angle of not more than 90 ° and enclose unconnected grooves. In addition, with this arrangement there is a better distribution of forces over the sole surface, since the buckling is not in can be done in a single groove. The longitudinal rib (s) can (can) run in a straight line, but also slightly curved or angled. The grooves can either be over the entire length be the same depth, or the depth or width of the grooves can vary over their length.

Furthermore, the sole can be designed so that the grooves are curved, preferably approximately semicircular, but any tangent at its edge from the longitudinal rib and / or the sole center line should point towards the tip of the shoe or form an angle of at most 90 ° with it. In addition, the grooves can branch, but the branching should also include an angle of at most $ 0 ° with the sole center line.

The Erf. application is described below with reference to the drawing. It ze: ^ t

Fig. 1 is a erfind ^ ngsgemäße sole in top view; FIG. 2 shows the sole according to FIG. 1 in side view; FIG. Fig. 3 and 4 two further embodiments according to the invention

shape in plan view. 5 shows a groove shape in cross section /

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Pig. 6 shows another embodiment according to the invention 7 and 8 are longitudinal sections through grooves;

Fig. 9 and Io grooves with different widths in view;

11 shows a further sole according to the invention in plan view;

FIG. 12 shows the sole according to FIG. 11 in cross section along the line XII-XII and FIG

Fig.IJ to 19 other soles according to the invention in plan view.

The sole profiling according to FIGS. 1 and 2 has a continuous longitudinal rib 3 # or 3 ¹ in paragraph 1 as well as in sole 2, from which grooves 4, 4 * extend towards the heel or sole edge. These grooves 4, 4 'enclose an angle oc with the longitudinal rib 3, 3' which is at most 90 °. The smaller the angle «c, the easier it is for the material to get to the edge of the sole and fill in all the cavities. On the other hand, the grip of the sole is reduced in the walking direction; an optimum must therefore be chosen between the two requirements.

Form ribs are used on the head stamp of the sole shape, around which the material must flow and which ^{correspond to the later grooves 4, 4 1} in the sole. The main stream of material that flows through the longitudinal rib of the sole 3, J5 ¹ , is deflected by the shaped ribs and directed into the secondary channels formed between them, which correspond to the later sole ribs 3o.

In addition, the inclined position of the grooves ensures that the load is better distributed over several ribs while walking. There are no kinks, as is the case with transverse grooves due to the cross-sectional reduction of the sole of the Case is.

As shown in FIG. 3, the grooves 5 can also run in an arcuate shape, for example in a semicircle. However, any tangent to the edge of the grooves 5 with the sole center line A or the relevant longitudinal rib should enclose an angle *> c of at most 90 °.

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Fig. 4 shows a further embodiment in which the Grooves 6 have branches 7, which, however, also form an angle o £ of at most with the sole center line A Include 9o °.

The groove cross section 8 can, as FIG. 5 shows, semicircular may be selected, but it can also have any other suitable cross-sectional shape, for example a rectangular cross-section. It is important that sharp edges are avoided in the inside of the groove so that there are no hairline cracks. which would cause premature destruction of the sole. In addition, correspondingly rounded ribs allow a better flow of the material in the headstamp of the sole shape.

6 shows a sole shape in which the central longitudinal rib 3 ″ runs in a zigzag shape formed by the mutually offset grooves 4.

Any injuries to the sole caused by small punctures or the like normally result from continued flexing to an enlargement of these punctures and further up to the destruction of the sole. In the training according to the invention of the tread, however, the bending stress during walking is transferred to the thinner sole areas of the grooves, which lie deeper than the running surface of the ribs and can therefore hardly or not at all be injured. Especially with the in In the sole shape described in FIG. 6, even the tread web J "remains essentially free of such bending stresses.

The grooves 4 can, as shown in FIG. 7, against the edge of the sole get deeper. This improves the grip of the sole in the edge area; in addition, under particular stress in this area (sports shoes!) premature wear is avoided.

Where this need is not given, a groove shape as shown in FIG. 8 can be provided where the groove against the The middle of the sole becomes deeper. During normal walking, the bending stress is essentially on the ball of the foot

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transferred in the middle area of the sole. As a result of a Certain crowning of the shoe last, seen perpendicular to the running direction, the sole mostly thinner in the middle is than at the edge, the bending stress when walking will be a crowning of this thinner, inner, middle ball area effect, so that this would be worn out faster than the edge of the sole. As mentioned, this can be achieved by a appropriate formation of the grooves are counteracted.

Analogously, the effect of the sole can also be adapted to the respective requirements by adjusting the width of the groove increases or decreases towards the edge of the sole, as in the Pig. 9 and Io is shown. In particular, an extension of the Grooves 4 towards the edge of the sole act in a manner known per se to cause the grooves to become soiled too quickly by moist soil or slush and thus extends the grip of the sole.

In the sole embodiment according to the invention according to the Pig. 11 and 12 are based on the central, slightly curved longitudinal rib 3, transverse ribs 8, which meet the inventive requirement of the angle with the central rib and open into two edge ribs 9 and Io. If the grooves 4 ″ that do not go through to the edge of the sole are relatively deep, it is useful ^{to camber the sole in cross section by an amount x 1} that is greater than the groove depth χ and preferably at least 1.2 times the groove depth χ is.

According to FIG. 13, there are a total of six slightly curved ribs 11 to 16 are provided in the longitudinal direction, two of which are separated by smooth grooves 33 and of which each short triangular transverse or inclined ribs 17 emanate, which point to the tip of the sole and also triangular grooves 31 on the edge of the sole, but sawtooth-shaped in the middle of the sole Enclose grooves 32.

In Flg. 14 a central rib 3 is provided, one of which is continuous Grooves 4, as well as grooves 2o that end further towards the edge of the sole, branch off from longitudinal ribs 18 and 19. from the lateral longitudinal ribs 18 and 19 also branch

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proper transverse ribs 21, which form an angle of 9o ° with the longitudinal ribs 18 and.

In Fig. 15, an embodiment of the sole according to the invention is shown in which only two lateral longitudinal ribs 18 and 19 are provided, of which grooves 4 open towards the edge of the sole, for However, grooves 22 which are closed in themselves and converge towards the tip of the shoe branch off towards the middle of the sole. After the sole Fig. 16 branch off from a slightly angled central longitudinal rib 3 ″ grooves 23, which in their first part 24 with this longitudinal rib enclose an angle of at most 9o °, while they point in their outer, towards the edge of the sole Part 25 are angled back slightly for grip improve in walking direction.

A particularly advantageous embodiment of the present invention is shown in FIG. Here, "already bent slightly stronger. From this rib branch off at an angle of 9o ° ribs 26 and ZJ from, but by the angled position of the center rib 3", the continuous longitudinal central rib 3 ¹ is actually an angle ¹ in the first part of the shoe tip extend , in their outer part towards the edge of the sole, however, are approximately perpendicular to the walking direction in order to improve the grip of the sole tread. Ribs 27 can also be provided, which branch out in such a way that two or more rib parts 28 lying perpendicular to the toe of the shoe extend from the inner part pointing obliquely to the toe of the shoe. However, all of these ribs enclose grooves 4 ″ that are separate from one another and also angled.

In the illustration according to FIG. 18, ribs 8, or grooves V, also branch off from the slightly angled longitudinal rib 3 ″, which do not go through to the edge of the sole but are delimited there by two longitudinal ribs 9 and Io. In the embodiment 19 in turn branch off from a straight, central longitudinal rib 3, grooves 29 which are angled in a step shape and extend to the edge of the sole, each part of which forms an angle oc of with the sole center line

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includes less than 9o °. This training of the tread has the advantage that in the also stepped inclined ribs 32 enclosed by the grooves 29 in the direction of the edge of the sole more and more lying parallel to this? Step edges 33 formed, which cause a special grip of the sole against slipping sideways.

The invention is not restricted to the examples shown; Principle by a different combination of the individual features contained in the examples an almost unlimited variety are developed from sole designs.

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Claims (8)

P a ten tan s preche e Sole and heel made of rubber or plastic, in particular made of polyurethane, with a preferably roughened or finely profiled running surface, which is interrupted by grooves to increase the grip with at least one on the one hand in the heel, on the other hand in the sole at a distance from its edge, over their entire respective length and substantially extending in the shoe longitudinal direction of the longitudinal rib, characterized in that the longitudinal rib O, y, y,? '', 11-16, 18, 19) ribs (8, 17, 21, 26, 27, 3o ) that branch off from the longitudinal rib and / or from the sole center line (A) in the direction of the toe of the shoe or at an angle (· '- * ■) of no more than 9o and have grooves that are not connected to one another (4, 4 ¹ , 4 " , 4 ¹¹¹ , 5, 6, 2o, 22, 23, 29, 31). 2. Sole according to claim 1, characterized in that the longitudinal rib (s) (3, y, y, y \ H-16, ie, 19) is slightly curved or angled (extend). Current sole according to claim 1 or 2, characterized in that the depth of the grooves (4, 4 ', 4 ", 4 ¹ ", 5, 6, 2o, 22, 23, 29, 31) extends from the middle of the sole to the edge of the sole changed towards. 4. Sole according to one of the preceding claims, characterized in that the width of the grooves (4, 4 ¹ , 4 ", 4 ^IM , 5, 6, 2o, 22, 23, 29, 31) extends from the middle of the sole to the edge of the sole changes. 5. Sole according to one of the preceding claims, characterized in that the grooves (5) are curved, preferably approximately semicircular, but any tangent at its edge ^{branches off from the longitudinal rib (3, 3, 1} ) in the direction of the toe of the shoe or joins it Including angels (oc) of not more than 90 °. 6. Sole according to one of the preceding claims, characterized in that that the grooves (6) or the transverse and / or inclined ribs (27) branch, but also the branches (7,28) with the Lb'n ^ srippe (3 ", 3" ') and / or the sole center line (/ ■) include an angle (') of 90 or less. 009831/1211 7. Sole according to one of the preceding claims, characterized in that the grooves (4, 4 ', 4 ", 4 ^m , 5, 6, 2o, 22, 23» 29, 31) have a substantially semicircular cross-section (8) . 8. Sole according to one of the preceding claims, characterized in that the transverse or inclined ribs (8) in am
Longitudinal ribs (9, Io) located at the edge of the sole merge. DEUTSQHE SEMPERIT GUMMIWERK GES.M.B.H. 009831/1211 Le first