CN1020668C - Shoe bottom for sports shoes - Google Patents

Abstract

Unsubstantial parts (6, 7) of a sole (in particular to the gym shoe) are in a flank (5), being applied to reduce the torsion rigidity of a winding shoe longitudinal axis, so as to allow to suit for the nature sports of the feet; the front of the sole (3) which is corresponding to the back of the sole (4) revolves around the axis. In order to increase the stability and the better guide to the feet, and keep the anticipant torsion, the flank (5) of the sole is strengthened by a strengthening component (9) to prevent the bending of the cross axis which is normal to the long direction of the shoes, and the strengthening component (9) does not increase the torsion rigidity.

Description

Shoe bottom for sports shoes

The present invention relates to a kind of sole, particularly for sport footwear.

Know by biomethanics, when the physical relief campaign of pin, between the front portion and heel portion of pin,, that is to say above the sole flank, exist one to be twisting action basically around the longitudinal axis of pin promptly greatly about the sphenoid position.In order to consider this twist motion, know deliberately to make the sole flank that some weak parts are arranged, to allow the relative sole of sole forepart rear portion to take place to be basically reverse (German patent specification NO804901) around the footwear longitudinal axis.Such weak part forms by reducing flank position sole thickness, wish simultaneously still to keep basically along the central longitudinally reinforcement part of footwear, (seeing German prospectus (DE-AS) NO1485804), a groove that extends to the center from the sole edge maybe can be set, and fill (German patent specification NO943996) with not too hard packing material.

For reducing the weak part that sole flank torsional rigid forms, also must cause sole to reduce around the anti-crooking ability of transverse axis.According to the reason of pointing out above, wedgewise lengthwise sole is done in existing people's suggestion, just can the company of preventing wear bad (seeing Deutsche Bundespatent utility model NO1719678) at the flank position, a firm stayed surface is provided also in this case pin at the flank position with sole.Yet, particularly concerning sport footwear, have now found that: the twisting property at the relative sole of sole forepart rear portion needs in principle, if but sole can not only reverse at the flank position and the also bending easily at that position, so because this can make the joint part activity of pin very big, thereby make pin controlling party to and support aspect all feel under the weather.Particularly when running people's pin was run into irregular ground, owing to lack side stability, this point was just more remarkable.When strolling or whilst on tour, when running walks through the woods, when jogging or during other similar motion, generally all can running into irregular ground.

Therefore, the problem that the present invention relates to is exactly the sort of sole that this specification begins the part statement, and this sole can guarantee that pin is had better guiding and support.There is not detrimental effect and eliminate influencing each other of reversing between sole forepart and the sole rear portion for hope.

According to the present invention, above performance is that the structure by the characteristic of stating as claim 1 reaches.

Therefore,, adopt the way of strengthening that the sole flank is strengthened, overcome bending around the footwear transverse axis according to the present invention.In this case, the one side that sole contacts to earth is made convex structure downwards, by the curvature realization bending motion of sole, thus the counter-bending ability of raising sole.

This distinct advantages that adds strong method is, has added one along the anti-longitudinally parts of opening of footwear near the one side of contacting to earth in sole.These parts do not need to have the ability of any anti-self bending, because be to rely on anti-ly to open the not extensibility of parts or have only very little extensibility to provide below " the neutral curved fiber " that it be installed in sole to the booster action of sole.The anti-parts of opening can be done into strips, and the great advantage of doing like this is, parts itself are without any torsional rigid, thus to the property reversed at the relative sole of the sole forepart rear portion expected without any adverse effect.So the anti-bending strength at sole flank position can be controlled in the very wide limit by using so anti-parts of opening, and the torsional rigid of flank position sole is not influenced.Another important advantage is: compare with the method that employing self bending resistance parts (for example parts of flank steel spring and so on) are strengthened, rely on the anti-mode of opening to strengthen, still can keep footwear very light and handy, this is an important consideration to sport footwear.High strength, the suitable material of low weight with anti-Zhang Nengli and elongation hardly have a lot, for example: metal wire, carbon and glass fibre, plastic cord and the bar part of being made by these materials.

In a specific embodiment of this invention, be exactly to do in a manner described: for the weak part that reduces sole flank torsional rigid is two grooves, they from the edge laterally or the center that is tilted to extend (tilting forward or backward), until extend to along footwear sole reinforcement part longitudinally.The reinforcement part is in the middle of sole dual-side basically.The parts of this version, the tension force for along the reinforcement part has very strong tensile strength.Just adopt this version during generally with the plastics-production sole, the at this moment anti-parts of opening can embed the place of reinforcement part near the bottom surface.Yet also can install parts along the following empty surface of reinforcement part.In this case, wear-resisting end that is fixed on sole forepart and sole rear portion make anti-open parts directly with contact.At this moment, the anti-parts of opening are installed very closely from the one side of contacting to earth of sole.

Even adopt above-mentioned anti-ly when opening parts and strengthening, the anti-parts of opening also can embed on the whole length of sole, make it possible on whole length transmission power and realize booster action.Yet, considering that bending resistance is strengthened and when only considering anti-Zhang Jiaqiang, just at this moment this situation not necessarily mainly should be considered two ends suitably are securely fixed in the sole.For this purpose, need be provided with fixedly inserts at the two ends of stiffening device, inserts will be fixed in the sole, for example directly embeds.Fixedly inserts should be such structure, and promptly under the effect of the power that produces when sole rotates, it can not vertically move along footwear.

An embodiment of this invention elaborates with reference to accompanying drawing below.In the accompanying drawings:

Fig. 1 is the outer beneath view according to a partly cut-away of the present invention,

Fig. 2 be the part of outer bottom shown in Figure 1 along the side view that II among Fig. 1-the II line is cut open, and

Fig. 3 is the partial side view along direction shown in the arrow III of outer bottom shown in Figure 1.

Outer bottom shown in the figure and (not shown) of the interior end constitute sole together, and outer bottom consists essentially of the middle end 1 of being made by plastic foam material (for example polyurethane (second) ester) and is positioned on the wear-resisting end 2 of the one side of contacting to earth, and it can be profiling.Outer bottom can be further divided into sole forepart 3 and sole rear portion 4 at flank 5 places.Sole is by two grooves 6 and opened in 7 minutes, and two grooves extend internally from the outward flange and the inward flange of sole respectively, slopes inwardly forward simultaneously.As can be seen from Figure 3, groove 6 and 7 extends through sole, and it highly surpasses sole thickness half.In the centre of groove opposite end, the thickness at the middle end 1 remains unchanged, thereby provides one basically along sole reinforcement part 8 longitudinally.Because groove 6 and 7 have been arranged, thereby eliminated the influence to the sole rear portion reversed of sole forepart 3, in other words, sole forepart 3 can reverse with respect to the longitudinal axis of sole rear portion 4 around the reinforcement part; Therefore proper motion when this rotates corresponding to pin helps this rotation.

The strengthening part at the end 1 is generally pointed out by numeral 9 in the embedding.Strengthening part 9 comprises that the many plastic cord 91(that tensile strength is big, percentage elongation is low for example are made up of nylon) and fixing inserts 92 and 93, several plastic cords can be combined together to form a bandlet abreast, and fixedly inserts is fixed on the plastic cord both ends.Plastic cord 91(for example every diameter is 1.5mm) be connected to securely fixedly on the inserts 92 and 93, inserts is preferably also made of plastic material, so just plastic cord directly can be embedded fixedly in the inserts.Plastic cord 91 also can be connected together on a ground.Fixedly inserts 92 and 93 is the lamella shape (see figure 2), and batter part 94 is arranged.Fixedly also have some openings 95 on the inserts 92 and 93, in molding and forming process, the material at the end can pass through these openings in the formation, so just can be fixing inserts embedding sole.

As seen from Figure 2, plastic cord 91 extends along reinforcement part 8, and the downside of reinforcement part 8 abuts against the top of the one side of contacting to earth at the wear-resisting end 2.In the illustrated embodiment, the wear-resisting end 2, all have an interruption or slit 10 to expose at this place's plastic cord 91 in two parts (being sole forepart 3 and sole rear portion 4) of sole.This has just guaranteed to twist when moving at sole forepart 3 relative sole rear portions 4, and the bandlet of being made by plastic cord 91 can become curved shape without hindrance.Yet this slit 10 not necessarily; Strengthening part 9, particularly plastic cord 91, can be exempted from damage with protection plastic cord 91 by whole topped live in the wear-resisting end fully.

To see also that from following explanation outer bottom can be controlled by the anti-Zhang Nengli of strengthening part 9 for the bending resistance of winding perpendicular to the transverse axis bending of reinforcement part 8.If increase the flexing resistance of sole, it is contemplated that the such way of width of the bandlet that adopts the number that increases plastic cord 91 to increase the plastic cord formation simultaneously realizes.Say in principle, also can consider to increase the thickness of plastic cord, but when increasing the thickness of line, should note to avoid increasing the torsional rigid of flank position sole.

Should see,, also be fine and open a strengthening measure with resisting of other without said plastic cord in the illustrated embodiment.Like this, it is contemplated that the mesh, net or the cloth that adopt glass fibre or carbon fiber to be made into by fixing inserts 92 and 93, they are done become band, and embed sole with similar above-mentioned method.By selecting the width of this fabric bandlet, may be in a wide scope inner control tensile strength and consequent bending strength, and the weight of sole is had no significant effect.Yet, flat bonding jumper is installed is also included within the scope of the present invention, because bonding jumper thickness is very little, thereby its bending strength is quite low, and tensile strength is quite big.

Claims (5)

1, a kind of athletic shoe sole, it is characterized in that the flank (5) at sole locates both fluted (6,7), use strengthening part (9) to strengthen again, thereby both reduced torsional rigid around the footwear longitudinal axis, so that allow sole forepart (3) to adapt around reversing of above-mentioned axle, prevent from again to wind perpendicular to the footwear bending of transverse axis longitudinally with proper motion with pin with respect to sole rear portion (4).

2,, it is characterized in that the very big parts of tensile strength in the strengthening part 9, along the place that vertically fixedly is embedded in close tread surface in the sole of footwear according to the sole of claim 1.

3,, it is characterized in that the very big parts of tensile strength (9) have strip-like appearance, and two ends are fixed in the sole by fixing inserts (92,93) according to the sole of claim 2.

4, according to the sole of claim 2 or 3, it is characterized in that for reduce the weak part that torsional rigid forms in sole be two grooves (6,7), two grooves laterally or obliquely extend to the center from the edge, extend to always and be in sole reinforcement part (8) longitudinally basically, the parts (9) that tensile strength is very big are arranged along reinforcement part (8).

5,, it is characterized in that above-mentioned parts (9) extend along the lower surface of reinforcement part (8) according to the sole of claim 4.

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