JPH0638611U - Shoe sole midsole - Google Patents

Abstract

(57) [Abstract] [Purpose] Overcoming the defects of the conventional midsole of the sole of the shoe, not only it is possible to absorb the impact, but also it is possible to securely and quickly store and fix the impact damping member without using an adhesive. It is an object of the present invention to provide a midsole capable of imparting repulsion as well. A midsole main body a having the through hole or recess 1 formed at least in the heel thereof
The fitting part b previously coated with the shock absorbing member c is fitted therein, and the midsole main body a is covered with the bottom peripheral part d to be joined. One or more fitting protrusions 4 or 4.4 provided on the side circumference of the filling component in one or more vertical fitting grooves 3 or 3.3 provided on the edge 2.
Is characterized in that the filling component b is closely coupled to the midsole main body a so as to be closely fitted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention mainly relates to improvement of the sole of athletic shoes used for jogging, running training, and other running, and more particularly to improvement of the EVA resin midsole.

[0002]

[Prior art]

 The conventional midsole of a shoe sole is mainly made of a foamed EVA resin plate, and the desired component parts such as a midsole main material, an out-heel counter material or a member around the sole are cut and formed, and these are formed into a desired midsole main body and heel. Heat is applied mainly in the up-down direction to form a counter or a part around the bottom, and the components are integrally bonded and molded after applying an adhesive to the abutting surfaces that bond them together. There was a shock-damping member fitted and fixed in an upward or downward recess provided in the heel part of the.

The former former midsole of the sole of the shoe described above is subjected to a load of 3 to 5 times the weight of the shoe wearer during use only by the elasticity of the EVA resin foam constituting the former midsole. Not only can the impact not be sufficiently mitigated, but it may gradually lose elasticity and become deformed and damaged. Similarly, the midsole of the latter shoe sole is concerned with heating and pressurizing each component made of already-foamed EVA resin foam and integrally bonding the abutting surfaces of these components through an adhesive. A main body is mainly provided with a recess that is opened upward, downward or sideways and has an impact damping member interposed in the heel side, and the impact damping material is housed in the recess and the opening of the recess is sealed with another member. Therefore, it takes a lot of time and effort to mold the already-foamed EVA resin body with the heat and pressure molding means to form a recess, store the damping member in the recess, and seal it with another member. There was a defect that not only the property was impaired and the sealing could not be done reliably and efficiently, but also the shock-damping member could not be evenly and reliably mounted on the desired part.

[0004]

[Problems to be solved by the device]

 The present invention is capable of overcoming the above-mentioned defects of the midsole of the shoe sole according to the conventional product, capable of cushioning the shock, and not only can the shock-damping member be stored and fixed securely and smoothly without using an adhesive. The aim is to provide a midsole that can provide repulsion mainly due to the midsole.

[0005]

[Means for Solving the Problems]

 In order to overcome the above-mentioned defects of the conventional midsole, in a midsole of a shoe sole formed by heating and pressurizing a foamed EVA resin, at least a heel portion thereof is provided with a through hole or a recess 1. The fitting component b previously coated with the shock absorbing member c is fitted into the through hole or the recess 1 of the midsole main body a, and the midsole main body a is joined by the bottom peripheral part d. The main body a is provided in one or more vertical fitting grooves 3 or 3.3 provided in the hole edge 2 of the through hole or recess 1 and in one or more provided in the side periphery of the filling component b. The individual fitting protrusions 4 or 4. A novel means is that the filling component b is tightly connected to the midsole main body a so as to closely fit 4 together.

[0006]

[Action]

 The midsole of the shoe sole according to the present invention is obtained by closely fitting a filling part b in which a shock damping member c is sealed inside in advance into a through hole or recess 1 of the midsole main body a without an adhesive. Therefore, there is no step of adhering the respective constituent parts together, and the process of storing the shock-damping member c can be done efficiently. Further, the shock-damping member c can be uniformly and surely attached to a predetermined portion of the main body a of the midsole. Therefore, the midsole main body a and the filling component b are combined with each fitting groove 3 and each fitting convex portion 4 in the vertical direction, and the weight of the shoe wearer is 3 to 5 times the weight. It is possible to shrink the filling part b in the direction of the load that reaches as much as possible. Further, the channels 10 of the bottom peripheral component d, the channels 8 of the midsole main body a, and the openings 9 of the filling component b are made to communicate with each other.

[0007]

【Example】

 The shoe sole midsole of the present invention will be described below with reference to the basic embodiment shown in the drawings. First, as shown in FIG. 1, the midsole of the shoe sole of the present invention is composed of a midsole main body a and a filling component b. As shown in FIG. 5, the midsole main body a has a through hole 1 at least on the heel side thereof, and also has a recess 1 as shown in FIG. Further, at least the midsole main body a is formed into a desired shape by heating a plate-shaped midsole main body member of an already foamed EVA resin and mainly applying pressure from above and below.

Next, as shown in FIG. 3, a filling component b, which is another main component of the shoe sole midsole of the present invention, is made of the same EVA resin foam as that of the midsole main body a. The shock-damping member c is integrally formed by covering it with individual members. In addition, a non-foamed, uncrosslinked or unvulcanized resin or rubber is injected or injected into the cavity around the shock-damping member c fixed by a supporting component in the cavity of the molding die to fill the filling component b. The shock attenuating member c can be pushed in and sealed.

The shock-damping member c sealed in the filling part b is mainly composed of a silicone resin which is almost in a solid state as shown in A of FIG. 8 and B and C of FIG. As described above, there is also a silicone resin 6 or the like in a gel state to a liquid state that is sealed between the sealing members 5 of thermoplastic PVC resin. The shock-damping member c shown by B in FIG. 8 is one in which the silicone resin 6 is continuous with the sealing members 5 and by the connecting portions 7 like the silicone resin 6 shown by C in FIG. Some are enclosed within the sealing members 5 and 5 which form a plurality of independent chambers.

When the impact damping member c mainly shown in FIGS. 8B and 8C is embedded and sealed in the filling component b, the space between the sealing members 5 and 5 forming the filling component b or the sealing member It is also possible to sandwich the gel-like silicon resin in the recess formed between 5 and 5 and then store these in a cavity of a predetermined mold and then heat and pressurize and mold.

[0011]

[Another embodiment]

 The midsole of the shoe sole according to the present invention is different from the one shown in FIGS. 2, 4 and 7 in addition to the one shown in FIGS. 1, 3 and 5 and the like. 1 or more vertical fitting grooves 3 or 3.3 are formed in a part of the hole edge 2 of the through hole or the recess 1 of the midsole main body a. One or more fitting protrusions 4 or 4.4 protruding in the vertical direction are formed in a part of the above. Therefore, the fitting convex portions 4 of the filling component c can be fitted into the fitting grooves 3 of the midsole main body a to tightly fix the filling component b to the midsole main body without an adhesive.

In addition, the midsole of the shoe sole according to this embodiment includes a filling part b as shown in FIG. 2, FIG. 6, FIG. The out-heel counter e is formed of a member made of a foamed EVA resin as in the case of the midsole main body a, housed in the cavities of the desired molding dies, and then heated and pressed to form the desired shape. It is also possible to carry out contact molding on the abutting joint surface via an adhesive.

Further, both the bottom peripheral portion b and the midsole main body a are formed by forming 8 or 8, 8 which communicate with each inner side surface and / or outer side surface in the horizontal direction mainly at the heel side thereof. Further, the channel 8 or 8, 8 of the midsole main body a is communicated with the opening 9 or 9, 9 of the filling part c, and the channel 10 or 10, 10 communicating with the channel 8 or 8, 8 is provided around the bottom. Since it is provided on the part d 1, the impact damping member c in the filling part b 1 can be seen from the outer circumference of the shoe sole, that is, the outer circumference of the heel of the part d around the sole.

[0014]

[Effect of device]

 The midsole of the shoe sole according to the present invention allows the impact damping member c to be stored in a convenient manner, thus improving productivity and reducing costs and product value. Further, since the impact damping member c can be uniformly and surely stretched and attached to the predetermined portion in the impact direction, the impact damping effect can be utilized to prevent damage to the foot of the shoe wearer. Further, since each channel 10 of the sole peripheral component d, each channel 8 of the midsole main body a and the opening 9 of the filling component b are communicated with each other, the impact damping member c is shown from the outside of the shoe sole to allow the wearer of the shoe to wear the shoe. Can give you a sense of security. Moreover, the repulsive force of the midsole body a can be utilized to contribute to the promotion of running speed of the shoe wearer, which is a great practical effect.

[Brief description of drawings]

FIG. 1 is a schematic plan view of the midsole of the present invention viewed from the upper side.

FIG. 2 is a schematic plan view of the midsole of another embodiment as viewed from the upper surface side.

FIG. 3 is a schematic view of a partially cutaway slope of the filling component of the midsole.

FIG. 4 is likewise a schematic perspective view of a filling part according to another embodiment.

FIG. 5 is a schematic cross-sectional view of the heel mainly of the midsole, which is mainly the midsole.

FIG. 6 is a schematic cross-sectional view of a heel mainly of a midsole according to another embodiment.

FIG. 7 is a schematic cross-sectional view of the heel mainly of a midsole according to another embodiment.

FIG. 8 (A) is a schematic cross-sectional view of the impact damping member of the midsole. (B) Similarly, a schematic cross-sectional view of an impact damping member of another embodiment. (C) Similarly, a schematic cross-sectional view of an impact damping member of another embodiment.

FIG. 9 is a partially enlarged schematic view of a slope of the midsole, excluding a filling component.

[Explanation of symbols]

 a Midsole main body b Filling part c Impact damping member d Bottom peripheral part e Out heel counter 1 Through hole or recess 2 Hole edge 3 Fitting groove 4 Fitting convex part 5 Sealing member 6 Silicon resin 7 Connecting part 8 Channel 9 Opening part 10 channels

Claims (3)

[Scope of utility model registration request] 1. A midsole main body a having a through hole or a recess 1 formed at least in a heel portion of a midsole of a shoe sole, which is formed by heating and pressurizing a foamed EVA resin.
And a filling component b having a shock absorbing member c previously coated in the through hole or the recess 1 of the midsole main body a is closely fitted, and the midsole main body a is covered and coupled with a bottom peripheral component d. The midsole of the shoe sole. 2. The midsole main body a has one or a plurality of vertical fitting grooves 3 or 3.3 formed in a hole edge 2 of a through hole or a recess 1 thereof, and the filling component b is also the same. A fitting protrusion 4 or 4.4 that fits into the fitting groove 3 or 3.3 of the midsole main body a is formed on its side periphery, and the fitting protrusion 4 or 4.4 is fitted into each fitting protrusion 4 or 4.4. Ditch 3
2. The midsole of a shoe sole according to claim 1, wherein the filling component b is tightly coupled to the inside of the through hole or the recess 2 of the midsole main body a so as to be closely fitted to the midsole. 3. The bottom peripheral component d has one or a plurality of channels 10 or 10, 10 penetrating in the horizontal direction formed mainly on the inner side surface and / or the outer side surface of the heel side of the bottom peripheral part d. The sole main body a has the channel 1 of the bottom peripheral component d on the inner side surface and / or the outer side surface of the heel side thereof.
A horizontal channel 8 or 8, 8 communicating with 0 or 10, 10 is formed by punching, and the filling part b is also formed.
Is formed by forming one or a plurality of horizontal openings 9 or 9, 9 communicating with the channels 8 or 8, 8 of the midsole main body a on its inner surface and / or outer surface. The midsole of the shoe sole according to claim 1, wherein the midsole is a sole.