CN1035042A - Athletic shoe sole - Google Patents

Abstract

A kind of athletic shoe sole made from flexible plastic material has a groove (4) to be used for holding a plurality of single buffer bodies (5) that are made of elastomeric material below heel bearing-surface (A).These single buffer bodies (5) fill up groove (4), and when not loading, just be close together mutually with the form or the point-to-point form of zone to the zone, between them, form the space, these single buffer bodies (5) can be spherical, and can link together with little link arm, so that processing is handled better.

Description

Athletic shoe sole

The present invention relates to the athletic shoe sole made with soft plastic material.

There have been a lot of suggestions and practical design structure to solve such problem: to constitute athletic shoe sole like this, make them be enough to absorb (buffering) when the racer depresses footwear, act on the high load capacity on racer's the locomotory apparatus with impulse form, race style and the performance to nature do not produce adverse influence simultaneously.In the time of the riding down of racer, the heel area of position of pin kiss the earth at him produces main load at least, and racer's heel and leg bear the load of very big strength in the short time of scrolling phase of pin motion like this.The amplitude of this power depends primarily on sole " spring stroke " (Spring travel), in this stroke, mainly be absorbed by racer's the kinetic energy that weight and patterns of movement determined, up to heel become with respect to motion runway surface stable till.All the time need to take all factors into consideration this " spring stroke " in the sole design, because long spring stroke (this is desirable in order to produce low-level load) is given a kind of floating sense of racer, it since the racer foot-operated on the ground the time unstability and the efficient of race is produced adverse influence, and increase injured danger.This Different Weight of taking all factors into consideration also necessary consideration racer, because it is very clear: that the big racer of weight is provided enough spring strokes thereby the sole of enough buffering effects is arranged, too hard for the little racer of weight, and therefore produce above-mentioned floating sense; And the sole that is suitable for the little racer of weight can be pressed excessively by the big sole that the racer the applied load of weight, and therefore produces the sensation of stepping on earth.So the described sole of many kinds such as this specification the beginning part is arranged, the Different Weight that adapts to the racer for the buffer capacity that makes sole respectively, these soles have supporting mass or the analog (see West Germany disclosed application DE-AS No2904 540, DE-DS No 3,245 964) in the groove below the heel bearing-surface of can packing into interchangeably.But these known structures are all supposed racer oneself and can be determined his needed buffering effect, that is to say, the racer can oneself select required for this purpose buffer body.Yet will never always can do like this.

People also know, the recoil of spring generation of known soles material so-called " launching effect ", and between moving period, sole reduces to make pro rata pin upwards to quicken with the power corresponding to the compression sole with the part of loading at the pin scrolling.Though this effect of launching is regarded as the race efficient that makes progress is made contributions, but viewpoint from health, it is disadvantageous significantly, because when the load that is pressed in whole spring returns on the sole, sole " clashes into back " on the pin with same power, and this power is exactly the power that acts on to ground the time on the sole foot-operated.This has increased the injury to heel string and knee joint zone especially.

Therefore, the purpose of this invention is to provide the sole of a kind of specification the beginning part narration, it makes the buffer capacity of sole adapt to different racers' weight in better simply mode, and does not need racer oneself to take action in this respect.In addition, the present invention manages to make sole to reduce owing to launch effect and the load peak of insalubrity.

According to the present invention, this purpose is to reach by following footwear sole construction: this sole has a groove to be used for holding deformable elastic buffer body below the heel bearing-surface, this buffer body is made the layer by the two separate at least that single buffer body constituted of elastomeric material, laying respectively at this single buffer body in two-layer at least is connected to each other together, and two-layer overlapping each other, the single buffer body that makes one deck is mutual displacement with respect to the single buffer body of another layer.

The following fact provides the spring performance that strengthens gradually: buffer body comprises the single buffer body of a plurality of elastomeric materials, these single buffer bodies are close together to zone or point-to-point form with the zone mutually following of zero load condition, and directly link together relatively or with elastomeric material.In this respect, the present invention is based on following such consideration of having known for people on the principle: the spring performance of elastic buffer body strengthens gradually makes it automatically adapt to different racers' weight.When low load levels, can obtain enough spring strokes by means of the slinky spring effect that under the sort of situation, takes place, and along with the increase of loading, owing to spring performance strengthens gradually the increase of spring stroke is diminished gradually, thereby the big racer of weight is relatively less with the degree of heel compression sole.In this sense, we find to comprise the buffer body of a plurality of little single buffer bodies beat all be a kind of simple structure that the spring performance that strengthens gradually is provided.Ball preferably, but also can be cube, cylinder, these single buffer bodies parallelepiped or other symmetry or asymmetric structure, under zero load condition (they normally fill up groove below the heel bearing-surface fully under this condition), owing to their planform is with point-to-point, Line To Line or zone are close together mutually to the form in zone.Owing to just contact with each other on a very little area, so the load that is applied on the single buffer body is divided into corresponding a plurality of single power, originally these single power cause single buffer body local deformation.Along with the increase of distortion, the contact area between the single buffer body strengthens, thereby the deformability of buffer body diminishes gradually.Also just meaning in the elastic deformation of single buffer body that institute between them has living space has just all closed, that is to say that single buffer body is that buffer body resembles an elastomer closely with spring performance of approximately linear on the whole when being in each other " obstruction " state.

Select the size of single buffer body can determine the spring performance that strengthens gradually of buffer body of the present invention.The main lateral dimension of the single buffer body boundary of diameter in other words is the 2-12 millimeter, preferably the 3-8 millimeter.

The spring performance that strengthens gradually of the buffer body that can realize in simple mode by means of this arrangement has comprised the further significant advantage of this structure.Because single buffer body still can relatively move in groove when producing load, so the part of the kinetic energy that applies is transformed into friction.This just makes when the load of buffer body removes, and buffer body is acting on the whole of power above it, but with how many smaller one power racer's heel is produced reaction.What upwards quickened though this has reduced to make the racer during the proal scrolling of pin is launched effect, it is found that the spring performance (removing when loading with the complete reaction of the power of previous absorption on heel) of the thorough resilience of buffer body may have adverse influence to health at heel and heel string zone.The following fact makes the above-mentioned effect of launching weaken and have an active influence: during load on removing buffer body or after, the single buffer body in buffer body of the present invention must be by overcoming friction at first motion turn back to their initial position.This also be because: handle and single buffer body closely do not linked together in order in producing the technical process of sole, to improve processing, perhaps even with thin film they are interfixed into a full wafer with bonding agent.Bonding agent (for example they can be silicon rubber or the film formed with the same material of single buffer body) itself is that elasticity is yielding, and mainly just prevents single buffer body from coming off out and the relative mobility that do not hinder them.

Just as already noted, for processing processing better, single buffer body (for example ball) can make a full wafer with thin film, and this layer film is fixed these single buffer bodies, making them only leave very little space each other, is tiny connection bridge therebetween at the most.Surface at single buffer body all is crooked (for example ball) this situation in all directions, when fixing them with film, can directly be close together mutually for ball, get final product because film only need extend by the space between the ball, and always have this gap in any case because the shape of ball is feasible.In order the relative mobility between the single buffer body not to be had a negative impact and to form intermediate space, film should be very thin, for example only a few tenths of millimeters thick.

, also can produce and make the interconnective required effect of single buffer body without film with the tiny connection bridge of bar-shaped or chain.This tiny connection bridge also can for example make a full wafer with molding process and single buffer body.Film and bridge shape structure of an essay both can be the plane or three-dimensional structures.Because can wholely make buffer body by the single buffer body of the multilayer that links together by that way, so planar structure (single buffer body is in a plane in this structure) is favourable.

Narrate embodiments of the invention with reference to the accompanying drawings in more detail, wherein:

Fig. 1 represents first embodiment of sole of the present invention, and it is the part vertical section of heel area along line I-I of Fig. 2.

Fig. 2 is the plan view of sole shown in Figure 1, and it is cut open along line II-II of Fig. 1.

Fig. 3 is the detail drawing of buffer body of the present invention, the two-layer single buffer body that expression bonds together.

Sole shown in the drawings comprises the middle end 1 that an elastic plastic material (polyurethane (Polyarethare) that for example has 25-65 Shore (Shore) A hardness (corresponding to 40-80 Shore C hardness)) is made, a wear-resisting end 2 that is bonded in bottom side, the middle end 1, it for example comprises rubber and can have external sole decorative pattern (not shown), and one stick in the pin batter at the end 1 with the recessed bed of heel 3 in zone, it can have the Shore hardness of or the slightly high order of magnitude identical with the middle end 1.

Below 1 li the heel bearing-surface in the end, that is to say the zone of representing in Figure 1A place during groove 4 is formed on, racer's heel bone applies load in this zone to the recessed bed of heel.Groove 4 from the wear-resisting end 2 and bonding plane between the end 1 extend upward.In the embodiment shown, groove 4 stops at recessed bed 3 of distance heel and the only about 0-2 millimeter of the bonding plane place at the middle end 1.In the embodiment shown, the diameter of groove 4 is about 3.5～4 centimetres, and its height is about 12.5-13 millimeter.

Fill up groove 4 with having a plurality of beads 5 that elastomeric elastomeric material (for example polyurethane or rubber) makes.Ball 5 has basic smooth exterior surface face, thereby bead does not collude extension mutually when producing load, even also just be close together mutually when bearing load or even have certain relative mobility.

Groove 4 hits the waste rapid サ sealing of singing at Lai.Can provide an opening 6 in the zone of the groove 4 at the wear-resisting end 2.Opening 6 is sealed by slide 7, and sheet 7 can comprise the material harder than the wear-resisting end 2.

Fig. 3 represents to comprise two layers 51 of bead and 52 buffer body.Each of layer 51 and 52 all is made of bead 5, is placed on a very little linking arm 53 of ball 5 usefulness in the plane and links together, and forearm and ball are made a full wafer (for example using molding process).Bead is connected the structure of an essay of arm 53 and fixes, and makes every layer of bead can process processing easily.In the embodiment shown, layer 51 and 52 all has basically circular exterior contour, and its size makes them can pack into and fill up the groove 4(with suitable shape substantially and see Fig. 1).In this arrangement, there is a ball on upper strata 51 at the central point of circle, and the central point of lower floor 52 is not occupied by ball.Make two-layer ball be in the relation (because ball has identical size) of relative displacement mutually by this way, thereby make buffer body have Frusto-conical planform, this can find out from Fig. 1 and Fig. 3.

In the embodiment shown, the diameter of ball is about 7 millimeters, and therefore the sum of the ball in buffer body is about 40.

When the people who wears footwear runs and produces when load, compression stress is by the part of the recessed bed of the heel above the groove 4, and may act on the ball 5 of heap by the perisporium of the groove 4 at the middle end 1.That is to say the normally minimum point of heel bone from the center of load, this compression stress makes ball 5 more and more downwards with along radially compression mutually.This produces a spring stroke, has an effect owing to the elasticity of ball 5 makes corresponding to the restoring force of this load simultaneously.As previously mentioned, along with load increases, the interaction force of ball becomes greatly gradually, thereby the relation of spring stroke and load no longer is linear, and the increase of spring stroke reduces along with the increase of load.

In the above-described embodiments, can make a change and do not depart from scope of the present invention.For example, the shape of placing the groove of buffer body can have any characteristic, and can not be circular cross-section, but has oval basal plane or have the polygonal edge.In addition, the friction that produces between single buffer body (is ball in present situation) can be by having a mind to make its surface keep coarse and not too coarse and control artificially.Along with roughness increase and thereby the increase of friction, ball absorbs more energy, thereby has reduced the peak force that launches effect to a great extent.Even when ball being lined up a battle array, buffer body also needn't be restricted to planform shown in Figure 3.For two layers of balls with same type planform, be easy to one deck be placed on another the layer above, thereby make ball in vertical direction one on another, locate.In this situation, groove 4 will have cylindrical shape.

Claims (8)

1, a kind of athletic shoe sole made from flexible plastic material, below the heel bearing-surface, there is a groove to be used for holding deformable elastic buffer body, it is characterized in that this buffer body makes the layer (51 of the two separate at least that the single buffer body (5) by elastomeric material constituted, 52), said respectively at layer (51,52) the single buffer body (5) in is connected to each other together, and said layer (51,52) be in this wise one overlap above another: the single buffer body (5) that makes a layer (51 or 52) is mutual displacement with respect to the single buffer body (5) of another layer (52 or 51) of said at least two layers (51,52).

2,, it is characterized in that single buffer body (5) is a ball according to the sole of claim 1.

3,, it is characterized in that the main lateral dimension (being diameter) of single buffer body (5) is the 2-12 millimeter, preferably the 3-8 millimeter according to the sole of claim 1 or 2.

4, according to the sole one of among the claim 1-3, it is characterized in that single buffer body (5) does not closely link together with bonding agent.

5, according to the sole one of among the claim 1-3, it is characterized in that single buffer body (5) links together with forearm or bridge (53).

6,, it is characterized in that forearm or bridge (53) and single buffer body (5) make a full wafer according to the sole of claim 5.

7, according to the sole one of among the claim 1-6, it is characterized in that groove (4) is columniform, its axis normal is in sole and ground contacting surface.

8,, it is characterized in that this buffer body is that to cut body conical basically, and the structure of groove (4) and this buffer body is complementary according to the sole one of among the claim 1-7.

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