BG63449B1 - High-heel footwear - Google Patents

Abstract

The footwear is designed for walking and for other types of active wear. It is comfortable for wearing, the step inside being kept inside it in an anatomically correct position. The resting surface of the heel (2) of the footwear is fitted at clockwise revolving towards the middle narrow part (24) at angle H, which is in ratio towards the basic plane (18) according to the formula H = 5 deg. + (alpha. 1.25 deg.) where alpha is the height of the heel in segments of appr. 1.27 cm, exceeding 2.54 cm (1 inch), and the middle narrower part (24) is inclined at angle: M perpendicular to the basic plane (18), according to the formula M = 18 deg. + (alpha. 3.25 deg. ) where alpha is the height of the heel in segments of appr. 1.17 cm (half-an-inch) and exceeds 2.54 cm. 9 claims, 7 figures

Description

Technical field

The invention relates to high-heeled shoes for walking and other active wear.

BACKGROUND OF THE INVENTION

High-heeled shoes are considered extremely uncomfortable for daily wear, with 20% of women wearing such shoes having been shown to have foot pain due to the shoes, with most of these women starting to feel pain after only 4 hours walking with high current. This discomfort is primarily due to the slipping of the step forward in the shoe and the pinching of the toe in the shoe bomb.

The foot is composed of the posterior bones (known as the tarsus), including the talus and calcaneus, the arch of the foot comprising the wedge-shaped bone and the metatarsus (the bones connecting the tarsus with the phalanges of the toes), as well as the phalanges of the toes. The posterior bones rest on the cup of the heel, while the arch of the foot rises above the reinforced middle, narrower part of the intermediate sole, and reaches the cushion of the foot, where the metatarsus joins the base of the phalanges. The foot cushion, which is below the heads of the metatarsal bones forming the metatarsus, and the phalanges rest on the front of the known shoe in the toe area.

The famous shoe has a height of about 5 cm in height and meets the size 7 in accordance with US standards for women's shoes. The shoe has a base plane from which to measure the height of the current "a" to the base of the heel. The base of the heel is inclined at an angle of about 12-15 ° to the base plane. This angle is marked with an "x". The reinforced mid-narrow portion of the intermediate sole is inclined downwards and forwards from the base of the heel at an angle Y, which is approximately 30® relative to the base plane. In the finger area, the toe rests virtually parallel to the ground plane, but can be slaughtered up and down by tilting up and down at the tip of the shoe at an angle of ζ, which is 2-3 ° to the base plane.

As you can see, the classic classic high-heeled shoe maintains the foot mainly on an inclined plane, on which the foot slides forward to the shoe of the shoe when walking or standing in one place. This leads to pressure in the soft part of the foot, pressure on the toes, which often creates a burning sensation in that part of the foot, and also leads to fatigue and discomfort.

Traditionally, shoes are made using one of the two main technologies - by pulling the top on the mold or by anchoring the sack to the sole. On retraction, the top is glued or sewn by machine to the intermediate and / or outer soles. When working with the sole, the upper is sewn or glued to a pre-shaped insert, which in turn connects to the sole and / or sole of the shoe. In order to be able to absorb the weight of the body without deforming the shoe, a steel plate made usually of metal, wood, cloth, artificial fabric or plastic is fastened or glued between the sole and the sole and the sole of the shoe. . Some shoe designs also have a patterned insole and / or some soft inner insole with a soft pad beneath the foot. Although such soft padding under the foot may provide some initial relief, such soft padding reduces the biomechanical properties of the shoe and contributes too little to stabilize the foot in an anatomically correct position.

SUMMARY OF THE INVENTION

It is an object of the invention to provide a high-heeled shoe that is comfortable to wear while maintaining the foot inside the shoe in an anatomically correct position.

The task is solved by creating a high-heeled shoe with a fixed heel height of at least 2.54 cm, a support plate for the heel on the upper part of the current, a support for the arch extending forward from the support plate of the heel bone and having a first a portion that supports the head of the scaphoid (navicular bone) of the foot approximately in the same plane (relative to the base plane) with the bones of the heel, narrowed midline extending downward and forward from the first arch support area, and zone for keeping the toes running under the hook one upward and forward from the shank portion, for supporting the phalanges of the foot and prevent slippage of the foot forward relative to the shoe. According to the invention, the support plane for the heel is disposed in a clockwise rotation with respect to the middle narrow part at an angle H, which is in relation to the basic plane according to the formula

H = 5 ° + (a x 1.25 °) in which a is the height of the current in segments of approximately 1.27 cm and exceeds

2.54 cm and the median narrower part is inclined at an angle M perpendicular to the ground plane according to the formula

M = 18 ° + (a x 3.25 ») in which a is the height of the current in segments of approximately 1.27 cm and exceeds

2,54 cm.

In a suitable embodiment of the high-heeled shoe, the support plate for the heel is inclined about 3 ° ± 1 ° from the ground plane.

In another preferred embodiment, the median constricted portion is inclined about 3 ° ± 3 ° to the ground plane.

In another preferred embodiment, the shoe tip area is inclined at an angle of about 2-3 ° ± 1 ° to the base plane.

In another suitable embodiment of the shoe, the height of the heel is about 2.54 cm, the slope H of the support plate for the heel is 5-6 °, the metatarsal angle M is 18-22 °, and the angle of the fingers T is 1 -2 °.

In another suitable embodiment of the shoe, the height of the current a is about 3.81 cm, the slope H of the support plane for the heel is 6-7 °, the metatarsal angle M is 20-23 °, and the angle of the fingers T is 2-3 ° .

In another suitable embodiment of the shoe, the height of the current a is about 5.08 cm, the slope H of the support plane for the heel is 7-8 °, the metatarsal angle M is 24-28 °, and the angle of the fingers T is 2-3 ° .

In another suitable embodiment of the shoe, the height of the heel a is about 6.35 cm. and the slope H of the support plane for the heel is 8-9 °, the metatarsal angle M is 30-33 °, and the angle of the fingers T is 2-3 °.

In other embodiments, the height of the heel a is about 7.62 cm, the heel H of the support plane for the heel is 9-10 °, the metatarsal angle M is 33-36 °, and the toe angle T is 3- 4 °.

The advantages of the high-heeled shoe according to the invention are that it provides comfortable wearing while keeping the foot inside the shoe in an anatomically correct position.

Explanation of the annexed figures

Figure 1 is a schematic cross-section of a known type of high-heeled shoe made according to the prior art;

Figure 2 is a schematic cross-sectional view of a high-heeled shoe made according to the invention;

3 is a comparative diagram of the corresponding angles to the ground plane of the shoe made according to the invention and a classic high-heel shoe;

4 is a high-heeled shoe according to the invention in a first embodiment;

5 is a high-heeled shoe according to the invention in a second embodiment;

6 is a high-heeled shoe according to the invention in a third embodiment;

7 shows a high-heeled shoe according to the invention in a fourth embodiment.

Examples of carrying out the invention

In FIG. 2 shows one of the preferred embodiments of the invention. Like the shoe of FIG. 1, the shoe of FIG. 2 has a height of 5.08 cm in height. However, unlike the classic shoe shown in FIG. 1, in the shoe of FIG. 2, the support plate for the heel 20 is rotated clockwise, i.e. in the direction of the arrow CL with respect to the plane of the narrow middle part of the sole, at an angle H with respect to the base plane 18, which angle is determined by the formula

H = 5 »+ (a x 1.25 °) in which a is the height of the current in segments of approximately 1.27 cm and exceeds 2.5 cm.

The arch support 22 extends from the front end of the support surface for the heel 20, below the arch of the step or at least part of it. The contour of the arch support 22 has a top point 23 so that a barrier is created which prevents the calcaneus from sliding forward inside the shoe itself. From there, the arch support 22 curves down from the top point 23, merging with the narrow middle portion 24 of the sole extending to the toe area 26. The middle narrow portion 24 of the sole is inclined at an angle M perpendicular to the base plane 18, according to the formula

M = 18 ° + (a X 3.5 °) in which a is the height of the current in segments of approximately 1.27 cm and exceeds 2.54 cm.

Maintaining the indicated ratio of M to H with respect to the height of the current is particularly important to the invention in order to avoid the excessive height of the point 23, which would make the person wearing the shoe uncomfortable. For example, changing the M / H ratio by increasing the height a of the current will cause the body weight to be shifted to the support plate 20 by the heel, so that the foot will not slide forward into the shoe, but no point will occur. of painful pressure under the arch of the foot.

The area of the top of the shoe 26 curves upwards and forwards at an angle T of the order of 2-3 ° ± 1 ° relative to the base plane 18.

The combination of downward tilting of the support plate for the heel 20, the specific contour of the arch support 22 as an extension of the support plane for the heel 20, the tilting of the narrow sole and the upward inclination in the area of the shoe tip according to the invention results in a displacement of much of the body weight on the support plate for the heel 20 compared to classic high-heeled shoes. Measurements of the pressure in the shoe under the heel and under the foot cushion in the shoe made according to the invention and in the shoe of the known type at the same height indicate that the shoe made according to the invention provides an increase of 16-18% of the part of the weight absorbed by the heel of the sole and the corresponding reduction in weight of the body absorbed by the pillow of the foot when walking.

In the shoe according to the invention, most of the body weight is absorbed by the support plate of the heel instead of being transferred to the foot cushion, which avoids pinching of the toes and provides greater comfort.

In FIG. 3 shows, with a dashed line, the angle H of the support plate for the heel 20, the inclination M for the first metatarsal bone and for the thumb T in the toe area relative to the base plane 18 in the high current shoe made according to the invention. The size a represents the height of the current.

The solid line of FIG. 3 shows the corresponding slopes of previously known high current shoes such as the shoe shown in FIG. 1 to compare these parameters with the shoe made according to the invention. In the previously known shoes, the inclination of the support plate for the heel goes up to the back of the shoe at an angle

H, which is about 8 °, the slope below the first metatarsal bone goes down and forward at an angle of Y about 27 °, and the thumb area is raised up and forward at an angle Z of about

I, 5 °. These angles are also measured from the ground plane 18 and refer to shoes of the same size.

A brief explanation of the mechanism of the foot clarifies the function of the shoe according to the invention. The human foot can function in two different mechanical circuits to support the human body. First of all are the functions of the foot as a latch and as a support in an upright position. The support mechanism works effectively when the force acting on the vault with a tendency to flatten it is relatively small. This is observed when walking when the center of gravity of the body falls posteriorly, ie. behind the ankle.

When the center of gravity is shifted forward on the ankle joint, as it appears, when we take a normal step forward, the forces begin to act with the aim of smoothing the vault. To counteract this, a fundamental change in the mechanism of the support occurs in the step, starting to act as a farm so that it can resist resistance by deformation during shrinkage. It is known that the bones of the foot are extremely strong in terms of deformation during contraction and the greater the deformation, the greater the ability of the foot to provide arch support. In order for the foot to effect this change in the supporting mechanism, it is necessary to support the metatarsal bones by flexing the fingers. This barrier effect prevents the metatarsal bones from sliding forward and provides a switch from bending to flexion (contraction).

It is precisely the combination of this phenomenon with the shape and inclination of the support plate for the heel and the arch support in the shoe according to the invention that provides the advantages of the invention. By creating a special surface on the platform of the foot, a stronger retention action is provided so that the metatarsal bones are not slid forward and as a result no pinching of the toes of the shoe is made.

By increasing the bending angle, the torso flexion of the toes in the shoe can be done in one of the following two possible ways. The top of the shoe can be lifted up to produce a genie shoe. This increase in the angle of the metatarsal bones relative to the basal plane is accomplished by altering the flexion of the toes by altering the rear structure of the shoe, in particular the angle of the support plate for the heel, and by extending the arch support below the navicular bone. described above. As the foot rests in several places, the position occupied by the bone of the heel (calcaneus) with respect to the base is compensated by the inclination of the metatarsal bones near the foot cushion. This angular ratio is inversely proportional. The more the calcaneus occupies a position close to the parallel position with respect to the ground (floor) (provided that the angle of the shoe is of adequate height), the more the metatarsal bones will approach a perpendicular position. Thus, by designing the support plate for the heel with a slight inclination, so as to increase the descending angle of the metatarsal bones, the desired effect of the intercepting barrier is achieved.

In the invention, the support plate for the heel maintains its downward inclination with respect to the middle narrow portion of the shoe, regardless of the height of the current, with the avicular bone of the foot supported by the arch of the arch extending down from the support plate for the heel. In the current shoe construction, the higher the current, the greater the angle of the support plate for the heel approaches the angle of the middle of the shoe. Thus, in the shoes of the prior art, this ratio creates an inclined platform for the foot with respect to the floor. The increased angle causes the foot to slide forward with the fingers pressed against the top of the shoe. According to the invention, a shoe is created in which the support plate for the heel is tilted downwards towards the narrow middle part of the shoe, regardless of the height of the current, providing a support for the arch, located below the navicular bone, thus creating an area due to the which already exceeds the body weight by the support plate for the heel. The angle of the metatarsal bone (relative to the narrow middle part of the shoe) is increased in direct proportion to the height of the current, i.e. the higher the current of the shoe, the greater the angle of the metatarsal bone relative to the floor. In the shoe with a height of more than 5.08 cm, the advantage is shown not so much in the increase of the metatarsal inclination, but rather in the resulting biomechanical change in the inclination of the metatarsal bone as a result of maintaining the support plate for the heel in almost parallel position. relative to the ground plane.

This effect is enhanced when the tip of the shoe is at an angle, as described above, in order to increase the flexion angle of the fingers. As a result of this special construction, the load distribution between the foot and the shoe is altered so that when a person is not moving, much of his body weight is taken up by the heel instead of being transferred due to the inclined plane, as is the case with shoes, worked out so far, to the foot cushion and create the problems that are described above. Therefore, the construction of the invention does not allow the fingers to be pressed and provides better comfort.

Although the above description is based on the US standard for ladies shoes of size 5.08 cm in height, the invention can be applied throughout the scope of the US standard for women's shoes, in particular for shoes of sizes 7 up to 10, with different heights, especially for shoes with heights ranging from 2.54 to 7.62 cm. At different sizes and different heights, the metatarsal slope varies in the range of about 18-20 ° with a current of 2.54 cm in height, up to about 33-36 ° in a current of 7.62 cm in height. In FIG. 2 and 4-7, as well as in Table 1 below, the parameters for high current shoes for the following current heights can be seen: 2.54 cm - fig. 4; 3.81 cm. 5; 5.08 cm - FIG. 2; 6.35 cm - FIG. 6 and 7.62 cm. 7.

Table 1

Current height (a), cm Support plate for heel, tilt (T) Metatarsal angle (M) Angle ng fingers (T) 2.54 5-6 " 18-22 " 1-2 " 3.81 6-7 ° 20-23 " 2-3 " 5.08 7-8 " 24-28 " 2-3 " 6.35 8-9 " 30-33 " 2-3 " 7.62 9-10 " 33-36 " 3-4 "

Claims

Claims (9)

Claims 1. High-heeled shoe with a fixed current height of at least 2.54 cm, support plate for heel (20) on top of the current, support for arch (22) extending forward from support plate for heel (20) and having a first portion which maintains the head of the scaphoid (navicular bone) of the foot approximately in the same plane (relative to the base plane) with the bones of the heel, narrowed middle portion (24) extending downwards and forwards from the first portion for arch support, and finger support zone (26) extending upwards and forwards from the middle narrow portion (24) for supporting the phalanges of the foot and preventing the foot from sliding forward against the shoe, characterized in that the support plate for the heel (20) is arranged in a clockwise rotation relative to the middle narrow part (24 ) at an angle H, which is in relation to the ground plane (18) according to the formula H = 5 ° + (a x 1.25 °) in which a is the height of the current in segments of approximately 1.27 cm and exceeds High-heeled shoe according to claim 1, characterized in that the support plate for the heel (20) is inclined about 3 ° ± 1 ° to the ground plane (18). 2.54 cm and the median narrower part (24) is inclined at an angle M perpendicular to the ground plane (18) according to the formula M = 18 «+ (a x 3.25») in which a is the height of the current in segments of approximately 1.27 cm and exceeds 2.54 cm. High-heeled shoe according to claim 1, characterized in that the middle narrowed portion (24) is inclined about 3 ° ± 3 ° to the ground plane (18). High-heeled shoe according to claim 1, characterized in that the zone (26) at the top of the shoe is inclined at an angle of about 2-3 ° ± 1 ° to the base plane (18). High-heeled shoe according to claim 1, characterized in that the height of the current a is about 2.54 cm and the slope H of the support plane for the heel (20) is 5-6 °, the metatarsal angle M is 18- 22 "and the toe angle T is 1-2 °. 6. High-heeled shoe according to claim 1, characterized in that the height of the current a is about 3.81 cm and the slope H of the support plane for the heel (20) is 6-7 °, the metatarsal angle M is 20- 23 ° and the toe angle T is 2-3 °. High-heeled shoe according to claim 1, characterized in that the height of the current a is about 5.08 cm and the slope H of the support plane for the heel (20) is 7-8 °, the metatarsal angle M is 24- 28 ° and the toe angle T is 2-3 °. High-heeled shoe according to claim 1, characterized in that the height of the current a is about 6.35 cm and the slope H of the support plane for the heel (20) is 8-9 °, the metatarsal angle M is 30- 33 ° and the toe angle T is 2-3 °. High-heeled shoe according to claim 1, characterized in that the height of the current a is about 7.62 cm and the slope H of the support plane for the heel (20) is 9-10 °, the metatarsal angle M is 33-36 ° and the toe angle T is 3-4 °.