KR100380261B1 - Shoe and method of making same - Google Patents

Abstract

The foot structure, including the rigidly shaped device 116, includes a heel cup 118 and an anatomically formed arch device 120 extending forwardly directly from the heel cup to the ulna head. The foot is placed anatomically in the shoe, providing torsional stability and contributing to the integrity of the shoe structure.

Description

Shoes and its manufacturing method {Shoe and method of making same}

The prior art high heel shoes currently in use are very uncomfortable and 20% of these shoe users feel uncomfortable immediately after wearing the shoes, and most of the users have experienced pain feeling 4 hours before wearing. This discomfort occurs first because the wearer's toes are tightened into the toe portion of the shoe when the wearer's foot slides forward.

Figure 1 shows the bone structure of the foot in the prior art high heel shoes with a dashed line. The structure of the foot includes heel bones 10 (also known as tarsus), including talus and calcanovs, which arches are called cuneiforms. ) And ulna 12 (metatarsus), toe bone or phalange 13. The heel bone 10 is supported by a heel seat 19, with the arch over the tibia-enhanced sole bottom 15 of the shoe, with the ulna connected to the base of the phalange 13. Extends to the ball of the foot. The ball of the foot under the head of the ulna forms the ulna and the phalanges are supported by the toe portion 9 of the shoe.

The shoe shown in FIG. 1 has a heel height of approximately 2 inches. The particular shoe shown is based on a lady's shoe size 7 of the American standard. In the illustrated shoe, the heel height "α" from the ground to the heel seat 19 is measured. The heel seat 19 is inclined upward at an angle of approximately 12 to 15 degrees with respect to the ground. This angle is indicated by "x" in FIGS. 1 and 3. The shank-reinforced midsole 15 is angled to slope forward and downward of the shoe from the heel seat at an angle of approximately 30 degrees to the ground. This angle is indicated by "y" in FIGS. 1 and 3. In the toe region of the shoe, the big toe is essentially parallel to the ground, but can be inclined upwards and forwards by tilting up and down the toe region at an angle of two to three degrees with respect to the ground 18. This angle is indicated by "z" in FIGS. 1 and 3.

As will be discussed below, the prior art high heel shoes shown in FIG. 1 are essentially positioned on an inclined plane where the wearer's feet are leaned forward into the toe box when walking or resting. This puts pressure on the front of the ball or foot and compresses the toes causing scratches on these areas of the foot, resulting in fatigue or discomfort.

Conventionally, shoes have been manufactured in one of two basic techniques: slip lasting or board lasting. In slip lasting, the top is typically stitched together and then stitched or glued to the midsole or exterior. In board lasting, the top is stitched or glued on a flat or preformed board and alternately attached to the bottom or the outer bottom. In order to properly bring the weight of the wearer without abnormalities to the shoe, a reinforcement made of metal, wood, leather, fiber mode or plastic, commonly known as shank, is cement-bonded or in the sole or inside the shoe sole. And is stitched to the outside. Shoe structures with molded sock liners or inner soles with cushions are provided to cushion the feet in the shoe. However, while cushioning in the shoe may provide comfort initially, the cushion is actually a biomechanical feature of the shoe and does not stabilize the foot in the shoe or support the foot in its correct position.

FIELD OF THE INVENTION The present invention relates to general footwear, and more particularly to footwear used for walking or other active uses. The invention relates in particular to applications such as high heel shoes although other uses may be contemplated.

1 is a schematic cross-sectional view of a conventional high heel shoe according to the prior art.

2 is a schematic cross-sectional view of a high heel shoe according to the present invention.

3 is a schematic representation of a comparison of an associated angle to the ground of the shoe according to the invention shown in FIG. 2 and a conventional high heel shoe having a similar heel height shown in FIG.

Figures 4 to 7 are similar to Figure 2, showing a high heel shoe according to the present invention, showing a device according to the present invention with various heel heights.

8 is a partial side cross-sectional view of a shoe made in accordance with one embodiment of the present invention.

9 is an exploded view of the shoe of FIG. 8;

FIG. 10 is a perspective view showing a partial cross section of the shoe of FIG. 8; FIG.

11 is a perspective view of the element of the shoe of FIG. 8;

FIG. 12 is a view similar to FIG. 8, showing another embodiment of the present invention; FIG.

FIG. 13 is a sectional view taken along line 13-13 of FIG. 12;

Figure 14 is a view showing the position and the support of the left foot according to the present invention.

It is therefore an object of the present invention to provide a shoe that is comfortable to wear and has a structure that allows the wearer's foot to have its own correct position in the shoe.

Another object of the present invention is to provide a shoe manufacturing method that is comfortable to wear and has a structure that allows the wearer's foot to have its own correct position in the shoe.

Another object of the present invention is to provide a means for changing the inclination angle of the heel with respect to the ground. This can be applied to various shoe heel heights, allowing the heel to remain almost parallel to the ground when the heel height is as high as the ladies' high heel dress shoes.

Another object of the present invention is to provide a shoe that supports the longitudinal axis of the foot but is flexible in inclined axis operation. This can be applied, for example, to designs such as golf shoes where flexibility is required during swing motion but the collapse of the longitudinal arch of the foot during walking is avoided. In this application, the area under the longitudinal arch in the middle of the foot can be thinned down or completely removed to allow the foot's arch to descend and rise during swing motion, with the central portion of a strong structure to prevent the breaking of the long axis. Can be maintained.

Briefly, the present invention is in a strong form, comprising a device adapted to the human body extending from the distal end to immediately approach the heel cup and the ulnament head for the purposes described above, the top surface of a last / insole board. This can be achieved by providing an oral structure with a straightening device strongly attached as a structural element. The device thus formed includes a deep conformal heel cup, extending from the heel of the shoe to a point just below the ulna head area and comfortably cast or machined under the foot to ensure the foot is anatomically correct in the shoe. As described above, the shaping device of the present invention is similar to the conventional foot straightening device, but unlike the conventional straightening device, the shaping device of the present invention makes the wearer's foot more stable and preferably separated tibia in the shoe. It includes an integrated structural element of shoes that eliminates the need for a dual purpose to achieve a dual purpose.

As applied to a high heel shoe in accordance with a preferred embodiment of the present invention, the strong shape device is a heel seat having an angle slightly inclined downward (relative to the imaginary tibial surface of the shoe), and forward from the heel seat And an arch support extending and having a first portion supporting the head of the navicular of the wearer. The shoe also prevents forward slipping of the wearer's foot against the shoe to prevent the toe from tightening into the toe portion of the shoe and the last / insole board extending downward and forward from the first portion of the arch support. 16% of the wearer's weight when compared to standard high heel dress shoes, including a toe support area extending forward and upward incline from the bone / insole board whereby the wearer's first ulna is supported by the wearer's phalanx The above is supported by a heel sheet.

Other objects of the present invention will be apparent from the following description indicated by reference numerals and described with reference to the accompanying drawings.

2 is a view showing a preferred embodiment of the present invention. As with the shoe of FIG. 1, the shoe shown in FIG. 2 has a heel height of approximately 2 inches. However, unlike the conventional shoes shown in FIG. 1, the shoes shown in FIG. 2 show that the heel seat 20 has an arrow CL direction, ie clockwise rotation, with respect to the tibial plane at an angle “H” relative to the ground 18. Direction is rotated according to the equation

H = 5 ° + (∝ × 1.15 °), where ∝ = heel height in the nearest 1/2 inch section above 1 inch

Arch support 22 extends forward from the front edge of heel seat 20 to be at least partially under the arch of the wearer's foot. The arch support 22 is shaped to have a high point 23 that forms a barrier that prevents the wearer's calcanus from sliding forward in the shoe. The arch support 22 is then bent downward from the high point 23 to connect the tibia 24 moving to the toe region 26 of the shoe.

Tibia 24 is inclined at " M " perpendicular to the ground according to the following equation, where ∝ is the heel height at the nearest 1/2 inch portion exceeding 1 inch.

M = 18 ° + (∝ × 3.5 °)

Maintaining the "M" and "H" described above with respect to the heel height is important for the present invention in order not to exceed the height at point 23 which is inconvenient for the wearer. Therefore, changing the M / H relationship when the heel height 증대 increases results in a shift of the wearer's weight on the heel seat, which prevents slipping in the shoe and provides a point of pain under the wearer's arch. Do not create.

The toe area of the shoe is inclined upwards and forwards by inclining upwards and forwards with an angle 'T' of approximately 2 to 3 degrees plus / minus relative to the ground.

The combination of the lower slope of the heel seat according to the invention, the shape of the arch support 22 in the expansion of the heel seat, the tilt of the tibia, and the upward slope of the toe region of the shoe are more inclined to the heel seat than in the case of conventional high heel shoes. Are supported and result in a higher percentage of the weight of the wearer being moved. In each of the conventional high heel shoes of the same heel height as the high heel shoes manufactured according to the present invention, the pressure measured in the shoes under the ball of the foot and the wearer's heel seat is measured according to the invention. This resulted in a weight gain carried by and a reduction in weight carried by the ball of the wearer's foot while walking. Thus, as a result of the design of the shoe of the present invention, a larger portion of the wearer's weight is moved by the inclined tibia of the shoe to the ball of the foot preventing the toes from tightening and making the foot comfortable. Supported by a heel seat.

The dashed line in FIG. 3 represents the large toe T in the toe area and the slope M and the heel seat angle H of the first ulna to the ground 18 of the high heel shoe according to the present invention. The dimension 를 represents the heel height. The solid line in FIG. 3 represents the corresponding set of angles and represents the presently possible inclination of high heel shoes with similar heel heights as shown in FIG. 1. In the current shoe, the inclination of the heel seat is raised toward the rear of the shoe at an angle x of approximately 8 degrees, the inclination of the first ulna downward and forward is approximately 27 degrees of angle y and the large toe at an angle z of approximately 1.5 degrees. Incline upward and forward. These angles also relate to the size of the shoe similar to the ground 18.

A brief description of the mechanical structure of the foot may help the function and understanding of the shoe of the present invention. The foot can support the entire body because it can function in two separate mechanical forms. First, the foot functions as a beam and supports the body by relieving tension. This support mechanism is effective when the arcuate force (arch planar force) is relatively small. This occurs when the median weight of the body falls behind the ankle. As the center of weight passes through the head of the ankle, force begins to flatten the arch as normal steps proceed. To counter this, the foot makes a fundamental change in the mechanism of the support to the truss shape of the support, making it possible to support it through compressive tension. Since the bones of the foot are shown extremely strongly with respect to compressive strength, the compressive fatigue is greater and the arch support ability is better. To achieve this change for the foot in the support mechanism, the material must be reinforced by the bending of the toes. This reinforcing effect allows the switch from banding to compression support as it protects the ulna from slipping forward.

The combination of the arch supports of the shoe design of the present invention, such effects, forms and inclinations of the heel seats provides the advantages of the present invention. By creating a specific platform for the foot, the reinforcing effect initiated in a more effective form prevents slipping forward of the ulna bone, thus eliminating continuous tightening of the toe into the pointed front of the shoe.

By increasing the bending angle, the dorsiflexion of the toes in the shoe can be achieved in one of two ways. The tip of the shoe can be lifted upwards while creating a "genie" type shoe. Although this works, it is not a specific style. A more effective mechanism is to increase the angle at which the ulna itself reaches the sole of the shoe. This has the effect of increasing the banding of the toes without creating "Jenny" shaped shoes. Increasing the angle of the ulna with respect to the ground is accomplished by changing the rear structure of the shoe, in particular the angle of the heel seat, and by expanding the arch support below the wearer's scapula as described above. Because the foot is connected to various positions, the plane where the heel bone (the calcaneus) is at the bottom can be compensated for by the pitch of the ulna as it approaches the ball of the foot. This angular relationship is inversely proportional. The closer the calcaneus is to the floor (which has the appropriate heel height), the closer the ulna is to the vertical direction. Thus, the desired reinforcement effect is achieved by providing a heel sheet with a small slope to increase the angle of inclination of the ulna.

In the present invention, the heel seat is maintained to be inclined downward with respect to the tibia regardless of the heel height, and the wearer's columnar bone is supported by an arch support extending forward from the heel seat. In the prior art shoe design, the higher the heel of the shoe, the closer the heel seat angle is to the tibia angle. This comparison in shoe design in the prior art creates an inclined platform of the foot towards the floor. This increased angle will eventually cause the foot to slide forward and snap into the toe of the shoe. The present invention provides a shoe inclined downward relative to the tibia regardless of the heel height, and provides an arch support below and supporting the columnar bone of the wearer, so that the weight of the wearer is transferred by the heel seat. The percentage that will be added will be greater. The ulnar angle (corresponding to the tibia of the shoe) increases in proportion to the height of the heel, and the higher the heel, the greater the ulnar angle relative to the floor. For shoes with a heel height of 2 inches or more, the advantage is not an increased ulnar tilt and results in a biomechanical change in the ulnar tilt due to the retention of heel seats placed closer to the ground.

This effect is emphasized when the toe area is angled as described above to increase the spring angle of the toe. As a result of this particular design, the load distribution between the foot and the shoe is more than the weight of the wearer's weight supported by the heel seat, rather than delivered by the slope of the shoe of the prior art to the ball of the foot with the resulting problem as described above. This is effective when the wearer is in a large part. Thus, in the design of the present invention, toe tightening is prevented and comfort is ensured.

While the foregoing has been described with respect to the American standard ladies shoe size 7 having a 2 inch heel height, the present invention is particularly applicable to the entire area of the American standard ladies shoe size, in particular having sizes 5 to 10 It can be applied to shoes having various heel heights, especially shoes of heel height in the region of 1 to 3 inches. Along with other shoe sizes and heel heights, the ulnar tilt varies from 18 to 22 degrees for 1 inch heel height with respect to 33 to 36 degrees for 3 inch heel height. Figures 2 and 4 to 7 and Table I below show high heel shoes made in accordance with the present invention, with heel heights of 1 inch (Figure 4), 1.5 inches (Figure 5), 2 inches (Figure 2), 2.5 Inches (FIG. 6) and 3 inches (FIG. 7).

Table I

Heel height Hill seat slope (H) Ulnar angle (M) Toe Angle (T) One' 5 to 6 degrees 18 to 22 degrees 1 to 2 degrees 1.5 ' 6 to 7 degrees 20 to 23 degrees 2 to 3 degrees 2' 7 to 8 degrees 24 to 28 degrees 2 to 3 degrees 2.5 ' 8 to 9 degrees 30 to 33 degrees 2 to 3 degrees 3 ' 9 to 10 degrees 33 to 36 degrees 3 to 4 degrees

8 to 11, the main elements of a shoe according to another embodiment of the invention are shown. The shoe includes a bone / insole board 100 formed of dimensionally stable and flexible material, such as leather, fiberboard, non-woven material, and the like. Below the goal board 110 are the outsole 112 and the heel 114. Located above the bone board 110 is a rigid device 116 that includes a heel cup 118 and a self-shaped arc device 120 extending forward from the heel cup 118 down to the ulna head area 122. )to be. The device 116 is cast or machined to fit underneath the foot to position and stabilize the wearer's heel in the shoe, and the foot rests within the shoe because it is tied downward from about 5 to 10 degrees depending on the heel height from the heel cup 118. The correct position itself is maintained, and the wearer's heel maintains a substantially parallel relationship with the ground, reinforcing the wearer's phalanx to prevent slipping forward of the wearer's foot with respect to the shoe as described above. The device 116 is for example adhesively or mechanically riveted or secured to the bone / insole board 110.

The device 116 may be formed of a strong material that matches the lightweight, shoe structure. The cast device 116 is therefore preferably made of ABS plastic. However, the device 116 may be made of other strong plastic materials or synthetic materials such as metal such as fiber reinforced plastic or foam aluminum. Device 116 serves a dual purpose of positioning and stabilizing the wearer's foot in the shoe to support the foot in its correct position, and also serves to harden the shoe from the front of the heel to just below the ulna head area. Support the weight of. Thus, what is needed for the separate reinforcement tibia can be eliminated. However, the shoe can also incorporate reinforcement tibia if desired. In addition, since the device 116 is an integral part of the shoe, having the correct position in the shoe ensures the position of the wearer's foot in the shoe.

The finished shoe is a sock 124 or insole positioned over the cast device 116 and the shoe top labeled 126. The heel 114 is attached to the outsole 112 by known adhesive or mechanical fastener means, and the top 126 is stitched, glue, staples, rivets to the bottom of the bone / insole board 110 and the insole 112. Or by using a combination of the above or one of several known shoe manufacturing techniques.

The present invention can be modified. For example, outsole 112 and heel 114 may be formed in a single unit as shown in FIG. 9. In addition, as shown in FIG. 12, the device 116 may preferably be used in low heel shoes 130 or boots. In this application, the device 116 can accommodate a low heel height because it can only hang slightly downward from the heel cup 118, and the heel remains roughly parallel to the ground. In addition, the device 116 can also be applied to other uses, such as, for example, golf shoes, so that when the shoe structure is integrated, it is possible to position the foot itself as well as the desired degree of torsional stability. For example, when applied to golf shoes, the area 132 below the middle longitudinal arch of the foot can be thinned to allow the arch of the foot to rise and fall during the swing motion, while the center portion is to prevent the long axis from being destroyed. Strong structure can be maintained. The device 116 can also be applied to shoes, tennis shoes, hiking boots, cross-training shoes, sandals, and other active shoes used to walk and run for men, women, and children who need torsional stability.

While the invention has been described above with reference to preferred embodiments, many modifications and variations are possible without departing from the spirit and scope of the invention. For example, as shown in FIG. 11, the cut-out area 140 may be removed from the device 116 below one third of the distal end of the first ulna head. Accordingly, the scope of the invention is only limited by the appended claims.

Claims (20)

A heel height α fixed at least one inch, a heel seat 20 mounted on the heel, extending forward from the heel seat and in the same plane (relative to the ground) as the wearer's heel skeleton. Arch support 22 having a first portion supporting the head of the navicular, tibia 24 (shank) extending downward and forward from the first portion of the arch support, and forward slipping of the wearer's foot relative to the shoe A high heel shoe having a toe support area 26 that extends obliquely upwards and forwards from the tibia to support the phalanges of the wearer to prevent wear, wherein the heel seat is H = 5 ° + (α × 1.25 °). (Where α represents the height of the heel in the nearest 1 / 2-inch portion above 1 inch) is located clockwise relative to the tibia at an angle "H" relative to the ground plane. The tibia is M High-heeled shoes inclined at an angle M perpendicular to the ground, following the equation of = 18 ° + (α × 3.25。), where α represents the heel height in the nearest half-inch portion above 1 inch. 2. The high heel shoe of claim 1, wherein the heel seat (20) is inclined relative to the ground at an angle of 3 ° ± 1 °. The high heel shoe of claim 1, wherein the tibia is inclined relative to the ground at an angle of 3 ° ± 3 °. 2. The high heel shoe of claim 1, wherein the toe region of the shoe is inclined at an angle of 2 to 3 ° ± 1 ° with respect to the ground (18). The heel height α is 1 inch, the heel seat inclination H is 5 to 6 °, the metatarsal angle M is 18 to 22 °, and the toe angle T is 1 to 2 °. High heel shoes. The high heel of claim 1, wherein the heel height α is 1.5 inches, the heel seat slope H is 6 to 7 °, the ulnar angle M is 20 to 23 °, and the toe angle T is 2 to 3 °. shoes. The high heel of claim 1, wherein the heel height α is 2 inches, the heel seat slope H is 7 to 8 °, the ulnar angle M is 24 to 28 °, and the toe angle T is 2 to 3 °. shoes. The high heel of claim 1, wherein the heel height α is 2.5 inches, the heel seat slope H is 8 to 9 °, the ulnar angle M is 30 to 33 °, and the toe angle T is 2 to 3 °. shoes. The high heel of claim 1, wherein the heel height α is 3 inches, the heel seat slope H is 9 to 10 °, the ulnar angle M is 33 to 36 °, and the toe angle T is 3 to 4 °. shoes. A flexible last / insole overlying the outsole and the heel, extending forward from the heel cup and the heel cup to the portion closest to the wearer's metatarsal head area And a rigid device having an arch device shaped to fit the human body, the rigid device being permanently attached to the bone board as an integral element of the shoe, the rigid device stabilizing by placing the wearer's heel in the shoe, To support the wearer's heel over the wearer's toe with respect to the ground so that the heel of the wearer is supported in parallel with the ground, and place the wearer's foot in an anatomically correct position in the shoe, provide torsional stability, and The stiffening device is provided by strengthening the shoe forward from the heel to the part closest to the wearer's ulna head area. Shoe structures that contribute to the integrity of the structure. The shoe structure of claim 10 wherein the rigid device comprises ABS plastic. 11. The shoe structure of claim 10, wherein the heel of the user is supported at an angle of 5 to 10 degrees relative to the ground. 11. The shoe of claim 10 wherein the shoe comprises golf shoes and the area of the rigid device below the middle longitudinal arch of the wearer's foot is tapered down relative to the rest of the device so that the arch of the foot can be raised and lowered while walking. Losing shoe structure. 11. The shoe structure of claim 10 wherein the rigid device is an integrally molded structure. The shoe structure of claim 10 wherein the rigid device is an integrally machined structure. The shoe structure of claim 10 wherein the rigid device is adhesively secured to the bone board. The shoe structure of claim 10 wherein the rigid device is mechanically attached to the bone board. 11. The shoe structure of claim 10, wherein a cut-out area is provided in the device below the distal end of the wearer's first ulna head. A shoe manufacturing method in which an upper and a flexible outsole are fixed to a flexible bone board, the method comprising: permanently fixing a rigid device having a heel cup and an arch device shaped to the human body as an integral element of the shoe permanently on top of the bone board And the rigid device strengthens the bone board forward from the heel to the portion closest to the ulna head, and then secures the upper and outsole to the bone board. delete