JP2681093B2 - Sole sole repulsion mechanism - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe sole repulsion mechanism improved so as to generate a repulsive force and shock absorption.

2. Description of the Related Art In recent jogging booms, various points have been pointed out about the adverse effects of repeated impacts during running, and shoes have been released one after another in consideration of impact cushioning during landing. And, these use a gel material, a low-repulsion rubber, air, etc. as a cushioning material.

The problem to be solved by the invention is that, although the impact on landing can be suppressed to a small extent, the kicking force is partially consumed by the cushioning material at the time of kicking, resulting in a large loss of kinetic energy. There was a problem.

Means for Solving the Problems In order to solve this problem, the shoe sole repulsion mechanism according to the present invention includes a reaction plate having upper and lower opposite sides and at least one curved portion that connects the upper and lower opposite sides. And a columnar body of a gel-like substance disposed between the upper and lower opposite sides, while forming a hollow portion in the front-rear horizontal direction in the heel portion of the shoe bottom foam layer, and in the hollow portion, the reaction is formed. It is characterized in that the plate is internally provided and at least a part of each of the upper and lower opposite sides is adhered to a predetermined position of the foam layer of the shoe sole facing each other, and the cavity portion in the front-rear horizontal direction has the heel portion from the rear outer side. It is characterized in that it is formed so as to be cut out, and a transparent or colored translucent cover is attached to the cut end surface.

Action Since the upper and lower opposite sides of the reaction plate are adhered internally at the predetermined positions where the shoe sole foam layers face each other, if force is applied to that part, it is placed between the reaction plate and the upper and lower opposite sides. Deformation occurs in the columnar body of the gel-like substance.

At the time of landing, a backward downward force is applied to the heel portion of the shoe sole, and a force in the compression direction and a shear force direction acts on the reaction plate. For this reason, the upper and lower opposite sides are close to each other, the curved portion is flatly deformed so as to be rolled backward, and the columnar body of the gel-like substance slides on it. At the time of kicking, the curved part of this reaction plate will roll back forward and the upper and lower opposite sides will bounce back up,
Further, the columnar body of the gel-like substance also tries to return to its original state, and the resultant force of these acts on the heel as a repulsive force. Further, if a transparent or colored translucent cover is attached to the notched end face formed so as to be cut out from the rear side, deformation of the reaction plate or the columnar body of the gel-like substance can be observed and visually enjoyed.

Examples Next, the present invention will be described with reference to illustrated examples.

1, FIG. 2 (a), (b), FIG. 3 (a),
(B) shows the reaction plate and the change in shape of the columnar body of gel-like material in a sports shoe as an example in an emphasized manner in different cases, where 1 is the entire instep and the heel from the rear, respectively. Epithelium 2 to cover the epithelium 2
Is a sole having a three-layer structure including an upper sole, an inner sole, and an outer sole, 4 is a reaction plate, and a reinforcing leather 5 is sewn on a portion of the epithelium 1 through which the cord is passed.

This reaction plate 4 has flexibility,
Resin materials with high toughness are used, and among these engineering plastics having rubber elasticity, those that are particularly strong against repeated bending loads are required.
For example, phenolic resin manufactured by Gunei Chemical Industry Co., Ltd.,
Reedtop PL-4962, urea resin R series manufactured by Ihara Chemical Industry Co., Ltd., among them R-300, or those reinforced with carbon fiber, boron fiber, whiskers or the like is used.

On the other hand, the shoe sole 3 is a so-called insole made by superposing nylon woven fabric on urethane foam
A foam insole, consisting of a rubber bottom that is integrated with this insole, and the lower end of the epithelium 1 is fixed to the insole by adhesion or sewing to have a predetermined shoe shape, The upper bottom is placed so as to cover it.

Then, as shown in FIG. 1, the reaction plate 4
In the embodiment, a substantially rectangular body having a thickness of 1, 5 mm and a length of 125 mm is folded back at the center to be bent into a horseshoe-shaped cross section having a thickness of about 10 mm. 41, 42
Has a continuous shape. Also, this upper and lower opposite side
Between 41 and 42, columnar bodies 6 of a gel-like substance are arranged on both sides of each side with both ends in contact with each other.

Here, the columnar body 6 of the gel-like substance is a columnar body even if it is called a columnar body, and in the examples, it is a columnar body having a thickness of 7 mm, and this is measured by JIS K 2530-1976- (load of 50 g). The material used is a silicone gel with a penetration of about 30 to 200 or a mixture of micro hollow spheres therein. The materials are Philite (registered trademark) manufactured by Co., Ltd. and Expancel (registered trademark) sold by the same company. Of course, it is not limited to this, and may be reinforced with silica or the like in terms of durability, and the fixing to the reaction plate 4 is not shown, but the inner surface of the upper and lower opposing sides is not covered with gel. It is desirable to form a ridge that fits with the columnar body of the particulate material, or to bond it with an appropriate adhesive such as RTV rubber.

On the other hand, in the heel portion of the shoe bottom foam layer, in the embodiment, in the portion of the insole, a horizontal slit 31 having a length of the heel is formed so as to be cut out from the rear side toward the toe, and this portion is formed. In addition, the reaction plate 4 is internally provided with a sufficient space secured even if it deforms.

In addition, when internally installed, the curved portion 43 is arranged rearward, and only the back side portion where the columnar bodies 6 of the gel-like substance on the upper and lower opposite sides are arranged is the first part of the inner sole which is the foam layer of the shoe sole.
As shown in the figure, they are adhered to each other at an opposing position in a normal state with an adhesive, and the remaining upper and lower opposing sides and the curved portion 43 are not adhered.

In addition, a cover 7 is attached from the rear with a transparent or colored translucent resin plate on the end surface of the cavity which is a horizontal slit 31 formed so as to be cut out from the rear toward the toe. The silicone gel is transparent or translucent in white, and it may be colored with a dye, a pigment or the like, so that this portion can be appealed as a design point.

Therefore, when a force is applied to the shoe sole, the bonded portion of the reaction plate 4 is restrained and does not shift, but free displacement and deformation occur in the non-bonded portion. If the external force is in the compression direction and the shearing force direction, the upper and lower opposite sides 41, 42 are close to each other, the curved portion 43 is rolled backward, and the columnar body of gel-like substance. 6 is flatly deformed so as to slide on it. This deformation stores energy for repulsion while absorbing the impact at the time of landing.

Figure 1 shows the normal state, but when running,
It behaves as shown in FIG. 2 (b) and FIG. 3 (b).

That is, FIG. 2 (b) shows an enlarged view of the state of FIG. 2 (a) at the time of bonding, but at this time, a backward downward force is applied to the sole of the shoe and the reaction plate is applied. Forces in the compression direction and the shearing force direction act on the reaction plate 4, and the upper side of the reaction plate 4 is displaced rearward and downward. Therefore, the curved portion 43 is rolled rearward as shown in (a). At the same time, the upper and lower opposite sides 41, 42 are close to each other as shown in (b), and the columnar body 6 of the gel-like substance is deformed so as to slide along this as shown in (c).
Then, the impact at the time of landing is absorbed mainly as an energy amount consumed when the columnar body 6 of the gel-like substance is deformed.

Continuing, most of the weight comes to rest on the toes
As shown in FIG. 3 (b), which is an enlarged view of the kick ground in FIG. 3 (a), the curved portion of the upper side of the reaction plate 4 which has been displaced downward and rearward is also rolled back forward (d). And the upper edge jumps up (e)
As a result, the columnar body of the gel-like substance also returns to its original state (f), and the resulting force of rolling back and bouncing back and the restoring force of the gel-like substance are passed through the upper bottom. Start to join the heels.

Therefore, according to the present invention, the energy at the time of landing can be stored as the deformation of the reaction plate and the columnar body of the gel-like substance, and this can be extracted as the repulsive force at the time of kicking, so that the loss of kinetic energy is small and the efficiency is high. You will be able to run. Of course, the impact energy at the time of landing is appropriately absorbed, and a cushioning effect can be expected.

Further, as in the above-described embodiment, if the cover 7 is adhered to the end surface of the hollow portion which is the horizontal slit 31 from the rear with a transparent or colored translucent resin plate, the reaction plate 4 or the columnar body of a gel-like substance is formed. The deformation of No. 6 and its coloring can be observed and can be visually enjoyed.

In the above embodiment, the reaction plate is described as being internally provided in the cavity formed by cutting out from the rear of the insole, but the present invention is not limited to this, and for example, a recess is formed in the lower surface of the insole heel. After arranging the reaction plate in the recess, the lower bottom may be attached so as to cover the reaction plate from below, and the upper and lower opposing sides of the reaction plate may be adhered by so-called adhesive. Instead, an uneven engaging portion may be provided to engage and fix, and the point is that even when force is applied, the adhesive parts on the upper and lower opposite sides of the reaction plate are in front of and behind the normal shoe sole foam layer. Any structure may be used as long as it can be fixed so as not to shift from the corresponding position.

Further, the length and shape of the reaction plate are not limited to those in the above-mentioned embodiment, and the point is that the energy at the time of landing is stored as the deformation of the reaction plate, and this is efficiently extracted as a repulsive force at the time of kicking. Any length and shape that can be used are acceptable. Of course, the material is not limited to the above examples. Similarly, the material, shape, etc. of the gel-like substance are not limited to those in the above-mentioned embodiment, and the energy stored in cooperation with the reaction plate can be efficiently extracted as a repulsive force at the time of kicking and also for shock absorption. Any suitable one will do.

Speaking of the shape of the reaction plate, for example, if it is formed in a flat annular shape as shown in FIG. 4, it can operate in substantially the same manner as described above, and the pipe formed in the flat annular section can be cut into appropriate lengths. Since it can be used as it is, it is easy to manufacture, and since the curved portions 43 and 43 'are formed at both ends, it can be made strong in terms of strength.

EFFECTS OF THE INVENTION As described above, according to the present invention, after appropriately cushioning the impact at the time of landing, the energy at that time is stored as the deformation of the reaction plate and the columnar body of the gel-like substance, which is repulsed at the time of kicking. It can be pulled out and the loss of kinetic energy can be reduced.

In addition, it is possible to visually enjoy the deformation of the reaction plate and the columnar body of the gel-like substance, the coloring state thereof, and the like, which can be a design point.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view of a main part of an example sports shoe in a normal state, FIG. 2 (a) is a side view showing a state at the time of landing, and FIG. 2 (b) is a part of the main part. FIG. 3 (a) is a side view of a cutaway side view, FIG. 3 (a) is a side view showing a state at the time of kicking, FIG. 3 (b) is a partially cutaway side view of a main portion thereof, and FIG. 4 is a normal side view of another embodiment. It is a partially cutaway side view of a main part. 3 ... a sole consisting of an upper sole, an insole which is a foam layer of the sole, and a lower sole,
31 …… Cavity part 4 …… Reaction plate, 41 …… Upper side, 42 …… Lower side, 43,43 ′ …… Bending part 6 …… Gel-like columnar body, 7 …… Cover

Claims (2)

(57) [Claims] 1. A reaction plate comprising upper and lower opposite sides and at least one curved portion connecting the upper and lower opposite sides, and a columnar body of a gel-like substance disposed between the upper and lower opposite sides, On the other hand, the heel of the foam layer of the shoe sole
A hollow portion in the front-rear horizontal direction is formed, and the reaction plate is provided in the hollow portion, and at least a part of each of the upper and lower opposite sides is adhered to a predetermined position of the foam layer of the shoe sole facing the hollow portion. Repulsive mechanism for the sole of the shoe. 2. A front and rear horizontal cavity portion is formed by cutting out a heel portion from the rear outside, and a transparent or colored translucent cover is attached to the notched end surface of the shoe sole. Repulsion mechanism.