JP2013509206A - Correction footwear - Google Patents

Abstract

A footwear sole comprising a first molding element of low density polyurethane overlaid on a second molding element of high density polyurethane to form a five layer substantially flat laminate.
[Selection] Figure 1

Description

  The present invention relates to an orthopedic footwear, and more particularly to a footwear sole provided with an orthodontic appliance.

  Podiatrists often recommend the use of orthodontic appliances in footwear when treating foot disorders. The orthodontic appliance is a molded rubber or plastic insert that is used to improve the physical flexion and strength characteristics of the foot. Podiatrists also cause many biomechanical problems with the foot due to poor quality and inappropriate footwear. A very common footwear, sometimes called a flip flop or jandal, has a flat rubber or plastic sole that is held against the foot by a toe strap. It is. Elephants are inexpensive, easy to obtain and are seen as casual fashion items. Thus, Zuri is popular all over the world.

  Unfortunately, however, the ridge does not provide the corrective support that a practitioner needs to get from footwear. In addition, since solitaires are seen as fashion items, the incorporation of orthodontic appliances in the sledge substantially impairs their commercial appeal.

  The present invention has been made in view of these problems.

  In accordance with one aspect of the present invention, there is provided a footwear sole comprising a laminate comprising superimposed molded elements of various densities.

  As used herein, the term “sole” should be understood to include the entire sole of the footwear or a component layer of the sole of the footwear. The term also includes inserts that can be placed within the footwear.

  Preferably, a first molding element of a given density is superimposed on a second molding element of a different density to form a substantially flat laminate. In a preferred embodiment, these elements are fused together during manufacture. Preferably one of the elements is made of a high density polyurethane and the other element is made of a low density polyurethane. These elements are contoured to provide various types of orthodontic support.

  In a preferred embodiment, the sole is not specific to a particular patient problem and is designed for general use. In other embodiments, the sole can be customized to provide a podiatrist's solution to various foot problems.

  Preferably, the sole is a torsional sole provided with a hole for supporting the toe strap.

  In other embodiments, the sole can be incorporated into a variety of footwear, including open sandals and sports shoes.

  Embodiments of the present invention will now be described with reference to the accompanying drawings, which are exemplary only.

It is a perspective view of a ridge which has a sole of the present invention. It is a perspective view of the 1st lower side element which makes a part of laminated body which comprises a sole. It is a perspective view of the 2nd upper side element which forms the other part of a laminated body. It is a top view of the sole which is one Embodiment of this invention. FIG. 4b is a cross-sectional view of the sole along the line AA in FIG. 4a. 4b is a sectional view of the sole along the line BB of FIG. 4a. FIG. 4b is a cross-sectional view of the sole along the CC line of FIG. 4a. FIG. 4b is a cross-sectional view of the sole along the line DD in FIG. 4a. It is another top view of a sole. FIG. 5b is a cross-sectional view taken along line EE of FIG. 5a. It is sectional drawing along the FF line of FIG. 5a. It is sectional drawing along the GG line of FIG. 5a. It is sectional drawing along the HH line of FIG. 5a. It is sectional drawing along the II line of FIG. 5a. It is sectional drawing along the JJ line of FIG. 5a. It is sectional drawing along the KK line of FIG. 5a. FIG. 5b is a cross-sectional view taken along line LL in FIG. 5a. It is a figure which shows the movement in a foot rotation seen from back. It is a figure which shows the extrarotation exercise | movement seen from back. It is a rear view of the leg in a neutral position.

  FIGS. 1 and 2 of the accompanying drawings show a slip 10 that may be referred to as a flip-flop or gendar. The elbow 10 is a very popular form of footwear, typically having a substantially flat sole 11 made of rubber or plastic, and a toe strap 20 provided on the front of the sole 11. It is fixed to the sole by passing through one hole 16 and then through a pair of spaced holes 17, 18 provided substantially in the middle along the longitudinal length of the sole 11. The elephant 10 has become a very popular casual wear, and the elephant is sold in large quantities all over the world.

  Unfortunately, the practitioner believes that the properties of the ridge are substandard from the standpoint of biomechanical support.

  The sole 11 of the slot 10 shown in the accompanying drawings is formed as a laminate of the lower element 12 shown in FIG. 3 and the upper element 13 shown in FIG. Each element 12, 13 provides a degree of orthodontic support, but when these two elements are overlapped and fused together during manufacture, these elements are the soles of a conventional sliding sole. It takes the substantially flat profile shape shown in FIGS. However, the orthodontic properties of the sole 11 arise from the contour shape of the elements 12, 13 and the use of different density plastics in their manufacture.

  Thus, the lower element 12 is contoured to have a raised heel control region 15 and is made of high density polyurethane. The upper element 13 has a different contoured surface and is made of low density polyurethane.

  High density polyurethane has a stiffness of 65 degrees to 70 degrees, while low density polyurethane has a rigidity of 45 degrees to 50 degrees. When the two elements 12, 13 are fused together, they form the substantially flat laminated structure 11 shown in FIGS. Elements 12 and 13 are pre-positioned fixing holes, i.e., a central hole 16 near the front of the sole and two spaced holes provided adjacent to the middle of the longitudinal length of the sole 11 17 and 18 are provided. These holes 16, 17, 18 receive tow straps 20 as shown in FIGS.

  6 and 7, the conventional sole S is shown in a use state. FIG. 6 illustrates a typical pronation motion problem where the ankle A is tilted inwardly on the medial portion M. FIG. 7 again shows the problem of supination movement in which the ankle A is tilted outward on the outer side L. FIG. When the sole 11 shown in FIG. 8, that is, the correction sole of the present application is used, the ankle A takes a neutral position without tilting to either the inner part M or the outer part L. This sole 11 ensures a moderate biomechanical orthodontic support and provides a podiatric quality that provides the orthodontic support action required by the specialist to the conventional slid without changing the overall appearance of the sledge.

  The contour shape of the elements 12 and 13 of the sole 11 of the present invention not only reduces the tendency of pronation / extraction of the foot in an unstable position, but also improves the stability and control of the foot during walking. make it easier. This is accomplished by creating a “locked” state of the metatarsal and subtalar joints during the gait step and minimizing stress on supporting tissues such as muscles and ligaments. The Thus, the risk of occurrence of biomechanical abnormalities such as pronation / extraction and the risk of these sequelae is reduced.

This is achieved by the following properties of the dense lower undulation element 12 as shown in FIGS.
A varus angle of 10 ° of the rear foot support (a) (FIGS. 5b and 5c).
• Located below the medial plantar region of the talus region (b1) and extending into the midfoot region (b2) to minimize foot talus varus and medial longitudinal footbow (b) The raised contour shape that supports (Fig. 4e).
A raised contour shape that extends forward from the inner bow support and forms a front (lateral leg) bow support (FIG. 4d).
• Located under the lateral metatarsal bone (cubic root) and the fifth metatarsal bone to “lock” the metatarsal joint and the subtalar joint during the walking step (from the ribs) Of) extended swell (˜5 mm) contour shape (c) (FIG. 4 b).
This extended outer profile extends well into the outer metatarsal region to minimize foot talus valgus and support the outer arch (FIG. 4c).

  The dense lower element 12 with a supporting contour shape extends over the entire size of the sole. In this case, the lower element is covered with a low-density upper element 13 having a reverse congruent contour shape that can be superimposed on the lower element and molded or glued together. This technical idea provides a flat-looking sole with sufficient adjustment of the foot on the lower element for control. In other words, the sledge 10 provided with the flat sole 11 has a support layer for correction.

  Further, the upper low density layer 13 together with the lower high density layer 12 provides a unique double shock absorbing effect. The upper layer produces a dispersive shock absorbing effect when transferring weight onto the stiffer lower layer, and forces through the lower dense layer are directed to a normal vertical state.

  Although the preferred embodiment relates to a sledge, it will be appreciated that the present invention is applicable to a wide range of soles with inserts that can be used in a wide range of footwear, including sports footwear.

  The sole described above provides support for both pronation and supination movements through invisible built-in triple bows, i.e., inner and outer inserts, and lateral bows of the sole. Rear foot control is obtained by the inclination of the lower sole element in the width direction of the heel. This sole also provides a locked state in the midfoot area and a double shock absorbing action obtained by the different shock absorbing performance of the upper and lower sole elements. All of these features are provided in one substantially flat sole.

  The biomechanical and orthodontic qualities of the soles are designed in a general sense so that they provide an improvement through a range of orthopedic problems. However, the sole can be custom-made to handle specific issues, and it goes without saying that such a custom-made sole involves the selection of the density of the plastic and the contouring of the elements.

  “Comprise” (in the translation, “contains” or “includes”, unless otherwise required by the context and language in the original text of the claims and the description of the invention. The term or variants, such as “comprises” or “comprising”, are used non-exclusively, ie, identify the presence of the described feature, It is used so as not to exclude the presence or addition of other features in the various embodiments.

Claims (7)

  A footwear sole comprising a laminate of molded elements of various densities superimposed.   The footwear sole of claim 1, wherein a first molding element of a given density is superimposed on a second molding element of a different density to form a substantially flat laminate.   The footwear sole of claim 2, wherein one of the elements is made of a high density polyurethane and the other element is made of a low density polyurethane.   The footwear sole of claim 3, wherein the low density polyurethane element is positioned above the high density polyurethane element.   The footwear sole according to any one of claims 1 to 4, wherein the elements are joined to each other.   The footwear sole according to claim 3, wherein the high-density polyurethane has a rigidity in a range from 65 degrees to 70 degrees, and the low-density polyurethane has a rigidity in a range from 45 degrees to 50 degrees.   A zipper having the sole according to any one of claims 1 to 6.

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