JP2007307115A - Shoe sole - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shoe sole having a high heel, which permits an appropriate cushioning action to be provided on the right and left sides of a heel while providing strength and stability enough to support a weight at the center of the heel, and has a merchantable appearance. <P>SOLUTION: By embedding vertically separated hollow air-cushioning materials 3a and 3b on the right and left sides of the interior of the heel 2 formed of an elastic material, crosswise interiors of the upper and lower air-cushioning materials are solidly formed of the elastic material or strength in the center of the heel is secured by being filled with a load supporting material while securing a sufficient cushioning action on the right and left sides of the heel. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a shoe sole suitable for a shoe having a large heel height such as a wedge sole.

2. Description of the Related Art Conventionally, a technique for enhancing a cushioning function of a heel part by embedding a cushion material such as an air bag inside a heel of a shoe sole is known. For example, Patent Document 1 discloses a sports shoe in which an air cushion material is arranged at the center of the heel part of the sole, and Patent Document 2 discloses a hollow body (4) arranged at the center part and the left and right side parts of the heel part. A sneaker shoe is disclosed. These conventional shoe soles with a built-in air cushion have an air cushion disposed at one place in the vertical direction inside the shoe sole.
JP-A-5-3801 Japanese Patent Laid-Open No. 11-155604

  By the way, in wedge heel type high heels and the like, it is preferable that the core of the heel has sufficient strength to support the weight in order to ensure stability during walking, while the movement of the soles during walking is preferable. It is considered preferable to provide a cushioning action on the left and right side portions of the heel in order to improve the comfort by following and to reduce the fatigue of the foot.

  However, according to the technique described in Patent Document 1, since the air cushion material is disposed at the center of the heel, the rigidity of the heel portion cannot be sufficiently ensured in the case of high heels, and the comfortable comfort is ensured. I can't.

  Also, in the technique described in Patent Document 2, since there is a cushion material not only in the left and right side parts but also in the central part, in the case of high heels, the rigidity of the heel part cannot be ensured sufficiently, and good comfort is ensured. Can not do it.

  Even if the air cushion material is arranged only on the left and right sides, the left and right width of the heel of the high heel is narrower than that of sports shoes and sneaker shoes, and the heel height is high. If an attempt is made to exhibit a buffering function adapted to the height, the ratio of the left and right width of the air cushion material to the left and right width of the heel increases, and as a result, there is a problem that the strength at the center of the heel cannot be secured.

  Therefore, according to the present invention, in a shoe sole having a high heel height, the right and left side portions of the heel can have an appropriate cushioning action while the heel center portion has sufficient strength and stability to support weight. An object of the present invention is to provide a shoe sole that is also excellent in appearance merchandise.

  In order to achieve the above object, the present invention takes the following technical means.

  In other words, the shoe sole of the present invention is characterized in that the air cushion material is embedded in two steps spaced apart in the vertical direction on the left and right sides of the inside of the heel formed of an elastic material. According to the present invention, since the air cushion materials on the left and right side portions are provided in the upper and lower two stages, even if the left and right widths of the air cushion materials are relatively narrow, the two air cushions provide sufficient air Cushion action can be obtained, which ensures sufficient strength at the center of the heel, ensuring walking and stability of shoes with high heel height, and foot fatigue due to the cushioning action on the left and right sides Etc. can be reduced.

  In the shoe sole of the present invention, hollow air cushion materials are embedded in the left and right sides of the inside of the heel formed of an elastic material in two steps apart in the vertical direction, and at least one of the upper and lower air cushion materials is The inside in the left-right direction is characterized by being solidly formed by the elastic material. According to this, since the center part of the heel part is solidly formed of an elastic material, it can have a desired compression hardness, but the left and right side parts are embedded in two upper and lower embedded stages. An appropriate cushioning action can be provided by the air cushion material. In addition, since the compressive stress in the vertical direction is propagated to the upper and lower air cushion materials by the elastic material interposed between the upper and lower air cushion materials, the load acting on the left and right side portions of the upper surface of the heel region is The stress is distributed over a wider range by the cushion material, and the stress can be distributed over a wider range by the lower air cushion material, and the width, length, and compression elastic modulus of the upper and lower air cushion materials are adjusted appropriately. By doing so, a desired buffer action can be exhibited.

  In addition, whether the left and right interiors of both the upper and lower air cushion materials are solidly formed by the elastic material or only one of the left and right interiors is solidly formed by the elastic material depends on the required buffer function or elastic material It can be designed appropriately according to its own elasticity. The inside of the air cushion material in which the inside in the left-right direction is not solidly formed of an elastic material may be filled with a load support material described later, and the air cushion material extends from the center in the left-right direction to the left-right side. It may be formed in layers. Even if it is formed in layers like this, the thickness design of the layer and the inside of the other air cushion material in the left-right direction are solidly formed of an elastic material, so that the buttocks have a desired compression hardness Is possible.

  In the shoe sole of the present invention, hollow air cushion materials are embedded in the left and right sides of the inside of the heel formed of an elastic material in two steps apart in the vertical direction, and at least one of the upper and lower air cushion materials is The inside of the left-right direction is filled with a load support material. According to this, even if the elastic material is a relatively soft material, an appropriate degree of compression can be provided at the center of the buttock. The load support material may be any material that can support compressive stress in the vertical direction, for example, a piece of wood or wood chips filled in a cavity formed inside the bag, and is harder than the elastic material. It may be a block.

  Whether the load support material is filled inside the left and right air cushion materials in the left-right direction or only one of the left and right direction insides is filled with the required buffer function, elastic material or load. It can be designed appropriately according to the elasticity of the support material itself. The left and right interior of the air cushion material that is not filled with the load support material in the left and right direction may be solidly formed by the elastic material, and the air cushion material is layered from the center in the left and right direction to the left and right sides. It may be formed. Even if it is formed in layers like this, it is possible to give the buttocks a desired degree of compression by designing the thickness of the layer and filling the inside of the other air cushion material in the left-right direction with a load support material Is possible.

  In the above-described shoe sole of the present invention, preferably, the air cushion material is exposed on the left and right side surfaces of the shoe sole. According to this, since the air cushion material is easily bulged and deformed outward in the left and right directions, it is possible to sufficiently secure a buffering action when an impact load is applied to the left and right side edges of the bag, and the air cushion material is transparent or transparent. By exposing this to the outer side as a translucent bag, the design is enhanced and the appearance merchandise can be improved.

  Furthermore, the front-rear direction length of the lower air cushion material is longer than the front-rear direction length of the upper air cushion material, and at least the front half region of the upper air cushion material is the lower air cushion material. If they overlap in plan view, the majority of the compressive stress propagated through the upper air cushion material can be reliably relieved by the lower air cushion material.

  In the above-described shoe sole of the present invention, each air cushion material is preferably a cylindrical one, but a rectangular tube shape, a flat spherical shape, or the like can also be adopted. Preferably, a cylindrical air cushion material whose both ends are closed is arranged so that its axis is along the front-rear direction of the shoe sole.

  In addition, urethane rubber can be suitably used as the elastic material, but other conventionally known appropriate materials can be used.

  According to the present invention, the air cushion material is arranged in two steps on the left and right sides of the heel part of the shoe sole, and the inside in the left-right direction is formed solid by an elastic material or filled with a load support material. In a shoe with a high heel height, when the load due to the weight acting on the desired upper surface acts on the center of the heel, the load is supported by the heel center when the load due to the body weight acts on the center in the left-right width direction. On the other hand, when the load acts on the left and right sides of the bag, it can be moderately buffered by the upper and lower air cushion materials.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the drawings.

  1 to 4 show a shoe sole 1 according to an embodiment of the present invention. The shoe sole 1 is suitably used for a wedge sole type sandal shoe, and is mainly formed of urethane rubber, and the shoe sole 1 is integrally formed with a heel 2. In addition, it is also possible to form the shoe sole of the present invention by assembling separately formed heel 2, midsole, and outer sole with an adhesive, metal fittings, or the like.

  Hollow air cushion materials 3a and 3b are embedded in two steps on the left and right side portions of the inside of the bag 2 while being spaced apart in the vertical direction. Each air cushion material is formed in a cylindrical shape whose both ends are closed, and is formed to be compressible and deformable by a transparent or translucent soft plastic material. Each air cushion material is embedded in the heel 2 so that its axis is along the front-rear direction. Thus, the method of embedding the air cushion material in the inside of the bag may be appropriate, for example, by pouring molten urethane rubber into the mold in a state where the air cushion material is arranged and positioned at a predetermined position in the mold. Can be molded.

  The length of the lower air cushion material 3b is about twice as long as the length of the upper air cushion material 3a. The lower air cushion material 3b It arrange | positions so that it may extend ahead rather than the air cushion material 3a. An area of about 80% of the front side of the upper air cushion material 3a overlaps with the rear portion of the lower air cushion material 3b in plan view, so that the upper and lower air cushion materials 3a and 3b are sufficient in the vertical direction. A buffering action is obtained.

  Each air cushion material 3a, 3b is exposed on the left and right side surfaces of the shoe sole, and is visible from the outside, and is configured to be easily bulged and deformed outward in the left and right directions.

  The insides of the upper and lower air cushion materials 3a and 3b in the left-right direction are solidly formed of urethane rubber as shown in FIG. Thereby, sufficient strength is secured at the center of the ridge.

  When using relatively soft urethane rubber, sufficient strength may not be obtained even if the air cushion material is solidly formed with urethane rubber in the left-right direction. As shown, it is possible to ensure the strength at the center of the ridge by filling the left and right inner portions of the upper and lower air cushion members 3a and 3b with a load support member 4 formed by compressing a piece of wood or sawdust.

  The present invention is not limited to the above embodiment, and can be appropriately modified within the scope of the technical idea described in the claims.

1 is a perspective view of a shoe sole according to an embodiment of the present invention. It is a top view of the shoe sole. It is a right view of the shoe sole. FIG. 3 is an enlarged sectional view taken along line AA in FIG. 2. It is sectional drawing of the shoe sole which concerns on other embodiment of this invention.

Explanation of symbols

1 Shoe sole 2 heel 3a Upper air cushion material 3b Lower air cushion material 4 Load support material

Claims (5)

  A hollow air cushion material is embedded in two steps spaced vertically in the left and right sides of the inside of the bag formed of an elastic material, and at least one of the upper and lower air cushion materials is centered by the elastic material. A shoe sole that is actually formed.   A hollow air cushion material is embedded in the left and right sides of the inside of the bag formed of an elastic material in two steps apart in the vertical direction, and a load support material is provided in the horizontal direction of at least one of the upper and lower air cushion materials. A shoe sole characterized by being filled.   A shoe sole characterized in that an air cushion material is embedded in two steps spaced apart in the vertical direction on the left and right sides of the inside of the bag formed of an elastic material.   4. The shoe sole according to claim 1, wherein the air cushion material is exposed on the left and right side surfaces of the shoe sole.   5. The shoe sole according to claim 1, wherein the length of the lower air cushion material in the front-rear direction is longer than the length of the upper air cushion material in at least the upper air cushion material. A shoe sole characterized in that the front half region overlaps the lower air cushion material in plan view.

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