KR100346726B1 - Sole - Google Patents

Abstract

In order to reduce the buckling of the ankle joint under lateral pressures with a shoe sole which is elastic in the vertical direction, it is proposed that a stabilizing unit should be inserted between the top and bottom of the sole. This reduces the lateral slip between the top and bottom when the sole is subjected to pressure.

Description

Sole

The present invention relates to a shoe sole having elasticity in a vertical direction according to the preamble of claim 1.

Lateral walking, for example, when playing tennis or bowling requires that the calf is angled with respect to the upper surface so that the joints of the foot are bent at this angle because the sole is parallel to the ground. This angle is increased by this bending angle when the sole is bent laterally under a lateral load. In addition, each sole is inclined to the side and bent when loaded in the longitudinal portion. In severe cases, this may cause overpronation or oversupination of the joints of the foot. This risk is exacerbated with shoes with soft soles, which are often applied in sports.

To avoid heavy joint loads, known shoes contain reinforcing elements that reduce shoeshaft bending against the sole. This is especially known for addition to high-heeled shoes, for example in the case of hiking boots or basketball shoes. Due to the high heel and reinforced shaft, the movement of the foot relative to the calf is severely limited. For low-heeled shoes, this reinforcement has little effect unless the shoe shaft surrounds the joint.

WO 81/03602 discloses soles which are elastic in the vertical direction, in which a cup spring is provided which represents at least one conical plate in the heel area between the upper and lower soles. In addition, this type of cup spring creates the elasticity of the sole in the vertical direction. However, circular cup springs provide only slight lateral stability in the heel region. This makes the structure of these soles very complicated and expensive.

EP-A 0 349 119 is known to have soles that are elastic in the vertical direction, and since the stabilizer is in the sole between the top and bottom of the sole, the lateral inclination of the top relative to the bottom of the sole when the sole is under pressure load. Is reduced, and hyperintraoperative or extra-electrical action of the joint is prevented. The stabilizer is an insert of elastic material in the heel region of the sole, which is stronger in the longitudinal region of the left and right sides in its longitudinal direction. Under pressure load, the center of the foot is much stronger than the edge area, so the foot is better supported on the left and right sides. This known advantage of the sole affects the vertical cushioning properties of the sole and can bend to a stronger edge area than in the case of severe internal or abduction action on the foot, which is more likely to injure than a sole without a stabilizer. It is small.

On the basis of this level of technology it is an object of the present invention to create a more comprehensive and improved sole which is particularly easy to manufacture and the elasticity required for cushioning is not affected in the vertical direction.

The object of the invention is solved by the shoe sole set forth in claim 1. In the invention according to claim 1, the stabilizer located in the heel region between the upper and lower soles has two support arms each in the sole edge region connected to each other by extending rigid body elements and in a simple manner. The one-sided compression load on the sole side is actuated and transferred to the other sole side so that the unloaded sole side is also pulled down. Due to this, the cushioning acting in the vertical direction by the elasticity of the sole in the heel area is not affected, and the lateral inclination of the upper side of the sole is significantly reduced with respect to the lower side of the sole. The sole according to the present invention has no greater stiffness to the extent of splicing injury of the joint even when there is a severe internal or abduction movement of the foot on the lateral side.

In order to reduce the entanglement of the foot in particular efficiently, a stabilizer according to claim 2 is provided in the heel region.

Particularly simple forms of stabilizers are described in claims 3 to 8 below.

At the same time, the stabilizer is a torsionally rigid body that is inserted into the shoe material, which is an elastic sole material.

The advantage of the stabilization device can consist of interchangeable inserts.

The stabilizer according to claim 11, in combination with the insole system ventilation system, supplies new air for ventilation of the shoe.

The torsional rigid body of the stabilizer is in particular of metal, for example steel or suitable plastics.

Another embodiment of the present invention is a stabilizer region of a midsole made of a midsole material. The great advantage of this stabilizer is that no auxiliary material is needed. In this case the stabilizer is very simply combined with the ventilation system.

Hereinafter, the present invention will be described in detail with reference to the drawings. The drawings are as follows.

1 is a first embodiment of a stabilizer shown in the heel area along the line I-I of FIG. 2 and in the lateral sole cross section according to the invention,

2 is a plan view of the shoe sole region shown in FIG.

3 and 4 are schematic views of soles similar to those of the first degree with modified stabilizers,

5 is a cross-sectional view taken along the line V-V of FIG.

6 is a form according to the invention along the line VI-VI of FIG. 7 and

7 is a cross-sectional view taken along the line VII-VII of FIG.

The sole 10 shown in the figure consists of a sole 12, an insole 14, and a midsole 16 disposed between the sole 12 and the insole 14. The midsole 16 has a recess 18 that receives the stabilizer 20 in the heel region.

In the first embodiment, the stabilizer 20 of torsional rigid body 22 is made of metal or plastic, for example, and is inserted into the elastic sole material 24. The torsional rigid body 22 consists of two rectangular parallel support arms 26, which change their position under pressure load and the two arms are joined by a torsional rigid connection 28 therebetween. Parallel support arms 26 are located at the left and right sole boundary regions. At this time, the parallel support arm 26 forms an acute angle α with the sole surface side without the pressure load by the heel and is reduced when the pressure load is applied. The torsional rigid connector 28 keeps the parallel support arm 26 in parallel position at all times, even at any pressure load in the heel area, so that the insole 14 is stabilizer even if the load is uneven in the left and right sole boundary areas. 20 is also substantially parallel to the sole 12.

In the first embodiment, the embodiment has a torsional rigid body 22, in the form of a U-shaped bar 30, as in FIGS. 1 and 2, with two U-shaped legs 32 supporting parallel The arm 26 is formed.

In addition, the torsional rigid body 22 in the form shown in FIG. 3 consists of a rectangular frame 50 of, for example, wire or plastic, wherein the two opposite frame sides 51 are parallel support arms 26. To form. The frame side 51 is connected over the frame portions 52 and 54 forming the torsional rigid body connection 28.

The stabilizer 20 shown in FIG. 3 consists of two rectangular frames 50. The rectangular frame 50 is arranged symmetrically with respect to the longitudinal direction of the sole and the plane perpendicular to the sole plane, whereby the upper frame 52 constituting the torsional rigid joint 28 on the upper side of the midsole 16. At the same time, the mutual spacing is smaller than that of the lower frame 54 constituting the torsional rigid connector 28. The advantage of this arrangement is that slight displacement of the elastic sole material occurs slightly above the midsole 16 in contact with the insole 14.

Also, in a form not shown, the torsional rigid body has a substantially planar portion, in which case two opposite side regions serve as support arms. Such torsional rigid bodies can be inserted very simply, for example, into a space into which the rigid body can enter into the sole. Thus, there is a possibility that the stabilizers can be individually adjusted by simply changing the torsional rigid bodies.

4 and 5, an embodiment of the invention is shown wherein the stabilizer 20 is comprised of two pairs 36 of U-shaped handles 38 inserted into the elastic sole material 24. It is. The handle 38 of the pair of handles 36 represents the torsional rigid handle bar 40 and the U-shaped bar 42. The handle bars 40 of the pair of handles 36 are arranged superimposed on the elastic sole material 24. U-shaped bar 42 is inward parallel to handlebar 40 of handle 38 overlapping at curved end 43. This curved end 43 is articulated with the end 44 of the other handle 38.

The articulation portion 48 is within approximately average sole height and, according to the torsional rigid connection portion 28, the handlebars 40 of each handle 38 are arranged above or below the sole to form a parallel support arm 26. U-shaped bar 42 is again acute angle with the sole plane side.

An advantage of this type is that the support arm 26 is shorter than the support arms 26 of the type according to FIGS. 1, 2 and 3 so that when the sole 10 is pressed under the pressure load, the sole 10 is pressed in the longitudinal direction. The deformation of the elastic sole material 24 that occurs along the way is not so large. The handlebar 40 located on the upper or lower side of the sole actually only performs vertical movement.

The elastic sole material may have horizontal holes, not shown, to increase elasticity, which are arranged at mutually offset positions in the recesses.

Elastic sole material 24 consists of an insert 56 inserted into recess 18, for example, as shown in FIG. The insert 56 is not completely filled in the recess 18 and free space 58 remains. This free space 58 is at the same time a pump space for the ventilation system through which air can pass into the interior of the shoe. The pump space is also through the atmosphere inside the shoe in the heel area with suction holes 62 which can be closed by check valve 64. When a compressive load is applied in the heel region, the pump space 60 is compressed so that air passes through at least the air flow channel 66 and into the tip of the foot or inside the shoe in the heel region.

In the embodiment according to FIG. 3, the free space 58 absorbs the longitudinal movement of the shoe of the lower frame 54 for further use.

In the above-described embodiment, the torsional rigid body 22 is of another material, in particular stronger than the sole of, for example, steel or high strength plastic.

Embodiments are shown in FIGS. 6 and 7, in which case the safety device 20 does not represent any auxiliary material. Stabilizer 20 is part of midsole 16 in this embodiment. The support arm 26 is formed by the midsole material of the lateral boundary region 68 of the midsole 16. The midsole material between the boundary regions 68 remains at least in the planar midsole portion 70 of the midsole 16, which is acute with the flat side of the sole and is reduced by the compressive load. This planar midsole portion 70 serves as a support arm 26 as a torsional rigid connection 28.

This form of the stabilizer 20 is effective here, as in the embodiment of the stabilizer 20 of the torsional rigid body 22 of steel or plastic, since the torsional rigid connection 28 is of the midsole material of the elastic sole material. Not However, this type of example has its advantages and does not require any auxiliary material.

In the embodiment according to FIGS. 6 and 7, the stabilizers 20 show two planar midsole portions 70 and are connected to each other by flat bars 72 on the insole side upper surface of the midsole 16. In addition to the sole 12, the pump space is separated. The pump space 60 is part of the ventilation system through which the air can pass through the air by means of the suction holes 62 and in the case of a pump space which is elastically deformable by a compressive load, as in the embodiment described above. It may pass through the channel 66 and into the shoe.

Claims (14)

A stabilizer 20 is inserted between the upper side and the lower side of the sole, thereby reducing the lateral inclination of the upper side of the sole relative to the lower side of the sole according to the compressive load of the sole 10 in its region. In the sole having elastic in the vertical direction, Stabilizer 20 has at least two parallel support arms 26 interconnected by torsional rigid connections 28, one of which is disposed in the left edge region of the sole and the other of the right edge region of the sole. And a parallel support arm which forms an acute angle α with the flat side and changes its position according to the compressive load, thereby reducing the acute angle α. The method of claim 1, Shoe device, characterized in that installed in the area of the heel. The method of claim 1, wherein The stabilizer 20 has at least one torsional rigid body 22 having a U-shaped bar 30, the two legs of which form a parallel support arm 26. The method of claim 3, wherein The torsional rigid body 22 is characterized in that it has two U-shaped bars 42 which are articulated at their ends 44. The method according to claim 1 or 2, The torsional rigid body 22 has at least one rectangular frame 50, in which case two opposite frame sides 51 form a parallel support arm 26. The method according to claim 1 or 2, The torsional rigid body 22 has a substantially rectangular planar portion, in which case two opposite side regions serve as a support. The method of claim 3, wherein A torsional rigid body 22 is characterized in that it is inserted into the elastic sole material 24. The method of claim 1, Shoe device is characterized in that the sole is inserted into the midsole (16). The method of claim 8, A shoe sole, characterized in that the stabilization device 20 is designed with an insert 56. The method of claim 9, Insole 56, characterized in that the interchangeable. The method according to claim 9 or 10, The recess 18 of the sole 10 receiving the insert 56 is at the same time a pump space 60 for the ventilation system, whereby air can pass through the pump space and into the interior of the shoe, which is A shoe sole, characterized in that it can be passed and elastically deformable by pressure load. The method according to claim 1 or 2, A shoe sole, characterized in that the stabilization device 20 is part of the midsole 16. The method of claim 12, The stabilizer 20 is characterized in that it has a flat midsole portion 70 which moves transversely with respect to the longitudinal direction of the sole to form an acute angle with the flat side of the sole. The method of claim 13, The stabilizer 20 is characterized in that it has two planar interconnecting midsole portions 70 delimiting the pump space of the ventilation system.