JP3445250B2 - Shoe sole - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shock absorber in which a fluid is enclosed in a bag at a place corresponding to the heel of the shoe so that the shock acting on the heel of the shoe can be mitigated. Regarding the shoe sole in which is embedded.

[0002]

2. Description of the Related Art In a conventional shoe sole, air, which is an example of a fluid, is enclosed in a transparent synthetic resin bag in a recess of an upward opening formed in a lower sole which is a constituent member of the shoe sole. While mounting a certain shock absorber, on both inner and outer outer surfaces of the shoe sole, and in a communication hole formed through the side wall of the lower sole so as to communicate with the recess from at least both left and right directions,
A part of the shock absorber or a part of the shock absorber that is exposed to the outside through the communication hole is fitted to the part of the shock absorber or a side wall of the shock absorber. Was also used as a display body for recognizing (see, for example, Japanese Utility Model Laid-Open No. 4-112606, Japanese Patent Laid-Open No.
-5006).

[0003]

The width of the shoe sole increases or decreases depending on the size of the shoe. However, the maximum left and right width of the shock absorber that fits in the communication hole of the lower sole is If the size is set to correspond to the lateral width of the shoe sole, the display body portion of the shock absorber largely protrudes outward from the communication hole in the smallest shoe sole, and the appearance design of the shoe is likely to be impaired.
On the contrary, if the maximum width of the shock absorber also serves as the display width of the minimum size shoe sole is set to the dimension corresponding to the width of the minimum size shoe sole, Since it penetrates deeply into the communication hole, the function of visually recognizing the presence of the shock absorber is deteriorated. Therefore, it is necessary to manufacture the smallest type of shock absorber corresponding to the size of the shoe within the range in which the appearance design of the shoe is not easily damaged and the existence of the shock absorber can be visually recognized with certainty. Therefore, the manufacturing cost has risen and the production management has become complicated.

The present invention has been made in view of the above situation, and its main problem is to make a reasonable improvement of the shock absorber without damaging the appearance design of the shoe and at the same time. The present invention is to provide a shoe sole capable of lowering the manufacturing cost and facilitating the production control while visually confirming the existence of the shoe.

[0005]

According to a first aspect of the present invention, in the shoe sole according to the first aspect of the present invention, the display body for recognizing the presence of the impact absorbing body is separated from the impact absorbing body in the configuration described above. It is provided in a state where at least a part of it is exposed outside.

According to the above characteristic structure, the shock absorbing body for absorbing and relaxing the shock acting on the heel of the shoe and the display body for recognizing the existence of the shock absorbing body are separately configured. Despite irrespective of shoe size, a single type of shock absorber is used to securely bury it at the heel-corresponding part of the shoe sole, but regardless of the burial position of the shock absorber, It is easily visible and can be freely installed in a good appearance.

Therefore, a part of the shock absorber or a part of the shock absorber which is exposed to the outside through the communication hole is fitted to the part of the shock absorber or a protrusion integrally formed on the side wall thereof. It is not necessary to prepare a plurality of types of shock absorbers according to the shoe size, unlike the conventional shoe sole that also serves as a display body for recognizing the presence of the shock absorbers.

Therefore, without impairing the appearance design of the shoe,
At the same time, the presence of the shock absorber can be surely recognized visually, but the manufacturing cost can be reduced and the production management can be facilitated.

A characteristic structure of the shoe sole according to claim 2 of the present invention resides in that the indicator is provided only on the inner and outer surfaces of the shoe sole.

According to the above characteristic construction, in the case of sports shoes, especially spike shoes for baseball, the outer outer surface and the rear outer surface of the sole tend to be easily damaged by abrasion or abrasion due to sliding or the like. Even in this case, if the display body is provided on the inner and outer surface of the shoe sole, damage to the display body can be suppressed, so that the presence display function of the shock absorber can be excellently exerted for a long period of time. it can.

According to a third aspect of the shoe sole of the present invention, the impact absorbing body is provided in a concave portion of an upward opening formed in a lower sole which is a constituent member of the shoe sole, and the concave portion. A transparent or translucent synthetic resin display is fixed to the shock absorber in a state where it is in contact with the shock absorber or a gap is left in the mounting part formed through the side wall of the lower bottom so as to communicate with the left and right directions. There is a point.

According to the above characteristic structure, among the transparent or translucent synthetic resin display bodies provided in the mounting portion, the concave portion is provided while exhibiting the function of displaying the presence of the shock absorber at the outer end facing the outside. The position of the shock absorber can be regulated at the inner end facing the front side, and the strength of the mounting portion forming portion can be reinforced by the display body fixed by being inserted into the mounting portion.

A feature of the shoe sole according to claim 4 of the present invention is that the display body and the mounting portion are formed in a convex shape in which the front-rear width on the concave side is wide.

According to the above characteristic structure, it is possible to reliably prevent the display body provided in the mounting portion from peeling off or falling off.

The shoe sole according to a fifth aspect of the present invention is characterized in that a part of the upper surface of the display body is formed as a receiving surface capable of receiving a part of the covered portion.

According to the above-mentioned characteristic structure, while the mounting portion for mounting the display body is formed through, the receiving surface of the display body provided on the mounting portion and the receiving surface formed on the lower bottom are formed. It is possible to securely and firmly bond and fix a part of the covered portion.

According to a sixth aspect of the present invention, in the shoe sole, a reinforcing contact surface fixed to the inner wall surface of the lower sole, which is an inner wall surface of a peripheral portion of the mounting portion, is attached to the display body. It is in the point of being formed.

According to the above-mentioned characteristic construction, while the mounting portion for mounting the display body is formed through, the contact surface of the display body fixed to the inner wall surface portion of the peripheral portion of the mounting portion where the penetration is formed causes the mounting portion of the mounting portion to move. The penetrating formation can be reinforced.

According to a seventh aspect of the present invention, in the shoe sole, the bag made of resin, which is a constituent member of the shock absorber, is
A U-shaped outer bag portion that substantially follows the contour of the heel, and a connecting outer bag portion that is formed to communicate with the U-shaped outer bag portion over a portion slightly offset from both free ends to the bottom side, The inner bag portion is formed so as to communicate with the middle portion of the connecting outer bag portion and the bottom side of the U-shaped outer bag portion, and the fluid injection port portion of the bag body has the connecting outer bag portion. And the free end portions of the U-shaped outer bag portion are formed in a portion facing a concave portion.

According to the above characteristic construction, by enclosing the fluid between the U-shaped outer bag portion and the outer bag portion and the inner bag portion which are substantially along the contour of the heel, the impact acting on the heel portion can be effectively obtained. Not only can be absorbed and relaxed, but the fluid injection port portion of the bag body is formed at a portion facing the recess formed by the connecting outer bag portion and the free ends of the U-shaped outer bag portion. Therefore, for example, as in the case where the fluid injection port portion is integrally formed in a state of protruding to the outer surface of the U-shaped outer bag portion,
It is not necessary to form a storage recess for accommodating the fluid injection port portion in the lower bottom, and it is possible to secure a sufficient bonding area with the covering portion by that amount, and the lower bottom and the covering portion can be secured, It becomes possible to firmly adhere and fix.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION [First Embodiment] FIGS.
As an example of an athletic shoe, a shoe sole of a baseball spike shoe A in which a plurality of claw portions are dispersedly arranged is shown, and an outer sole having abrasion resistance and flexibility formed by a polyurethane resin based on a thermoplastic elastomer ( A lower bottom (midsole) 2 formed of ethylene vinyl acetate copolymer (EVA), which is an example of a polymer foam, is laminated and adhered on the upper surface of the outsole 1 and the upper surface of the lower bottom 2 The upper part 9 is made of natural leather, synthetic leather, woven fabric, non-woven fabric or the like, and the insole 3 made of a material having excellent cushioning properties such as EVA or rubber. It is laminated and bonded.

The lower sole 2 has a size that conforms to the contour of the outer sole 1 from the heel to the arch, and the heel-equivalent portion has the maximum thickness. Further, the lower sole 2 extends along the left and right side edges. Both side wall portions 2A and a rear wall portion 2B along the rear edge are integrally formed so as to be continuous in a substantially U shape in a plan view.

Then, as shown in FIGS. 1 to 3, at the heel-corresponding portion in the shoe sole, that is, at the heel-corresponding portion of the lower sole 2,
An impact absorbing material 4 formed by enclosing (sealing) nitrogen gas, which is an example of a fluid, in a transparent or translucent bag 4A made of synthetic resin, which has an approximately semielliptical shape in plan view and which opens upward. A recess 5 having a possible depth is formed, and of the periphery of the recess 5, left and right side edges and a rear side edge that are substantially continuous with a U-shaped line in plan view and both side wall portions of the lower bottom 2 corresponding thereto A receiving surface 2C having a substantially U shape in plan view for laminating and bonding a part of the covering portion 9 is formed between 2A and the rear wall portion 2B, and both left and right sides of the lower bottom 2 are formed. Of the outer surface of the impact absorbing body 4 fixed to the heel corresponding to a specific portion of the inner outer surface 2a by a fixing means (adhesive means) such as an adhesive in the recess 5.
The transparent or semi-transparent synthetic resin display 6 for recognizing the presence of the above is provided in a state of being separated from the shock absorber 4 and at least partially exposed to the outside.

As shown in FIGS. 3 and 4, the display body 6 is provided inside the mounting portion 7 formed through the lower bottom 2 so as to communicate with the intermediate position in the front-rear direction of the recess 5 from the inner side in the left-right direction. In addition, while being in contact with the shock absorber 4 or with a gap left between them, they are inserted from the recess 5 side and fixed by a fixing means (adhesive means) such as an adhesive, and the display body 6 and the mounting portion 7 are
The inner portion located on the concave portion 5 side is formed in a convex shape having a large width in the front-rear direction of the shoe.

As shown in FIGS. 1 to 4, the mounting portion 7 communicates with the recess 5 of the lower bottom 2 in a U-shaped receiving surface 2C.
A mounting recess 7A formed in a rectangular shape by cutting a part of the mounting recess 7A, and a mounting hole 7 opening to the inner outer surface 2a of the lower bottom 2 in a state where the mounting recess 7A communicates with the center position of the mounting recess 7A in the front-rear direction.
It is composed of B and.

A recess 2D for strongly recognizing the presence of the display body 6 mounted on the mounting portion 7 is formed in the inner peripheral surface 2a of the lower bottom 2 at the opening peripheral edge of the mounting hole 7B of the mounting portion 7. In addition, on the inner wall surface of the lower bottom 2 corresponding to the formation region of the recess 2D, that is, on the inner wall surface facing the mounting recess 7A, a mounting base 6A, which will be described later, which is a part of the display body 6.
Are fixed by adhesion or the like, and are configured to reinforce the inner wall surface of the lower bottom 2 corresponding to the formation region of the recess 2D with the display body 6.

In other words, the mounting base 6 of the display body 6
On A, a reinforcing contact surface 6b is formed on the inner wall surface of the lower bottom 2 on the inner wall surface portion of the periphery of the through-hole forming portion of the mounting portion 7 by a fixing means (adhesive means) such as an adhesive. .

The display body 6 is made of polyurethane which is an example of a synthetic resin having excellent elasticity and fracture resistance, and as shown in FIGS. 1 to 4, the mounting recess 7A of the mounting portion 7 is used.
The upper surface 6a of the mounting base 6A has the same height as that of the U-shaped receiving surface 2C, while the mounting base 6A is inserted into the mounting hole 7B and the display portion 6B is fitted and mounted in the mounting hole 7B. The same or substantially the same shape is formed, and the upper surface 6a is
It is configured as a receiving surface capable of laminating and adhering a part of the covered portion 9 in a state of being continuous or substantially continuous with the V-shaped receiving surface 2C.

As shown in FIG. 5, the bag body 4A of the shock absorber 4 is made of polyurethane, which is an example of a synthetic resin having excellent elasticity and breakage resistance, like the display body 6, and has a top side. By heat-sealing the polyurethane layer and the lower polyurethane layer into a bag shape by the heat sealing technique, a U-shaped outer bag portion 4a substantially conforming to the contour of the heel and the U-shaped outer bag portion 4a A connecting outer bag portion 4b formed so as to communicate with each other from a portion slightly deviated from both free ends to the bottom portion, an intermediate portion of the connecting outer bag portion 4b, and a bottom portion side of the U-shaped outer bag portion 4a. A fluid injection port portion 4d for injecting (filling) nitrogen gas, which is an example of a fluid, is formed in the inner bag portion 4c formed in communication with each other and is formed in the bag body 4A.
It is formed at a central portion in the longitudinal direction of the connecting outer bag portion 4b and at a portion facing a concave portion 4e formed by the connecting outer bag portion 4b and both free ends of the U-shaped outer bag portion 4a.

Also, the connecting outer bag portion 4b and the inner bag portion 4
sectional passage area in the first communication portion 4f with c, and
Second communication portion 4 between inner bag portion 4c and U-shaped outer bag portion 4a
The cross-sectional passage area at g is configured to be smaller than the cross-sectional passage area of the other portion as the fluid throttle portion, and the free outer end portions of the U-shaped outer bag portion 4a and the first outer bag portion 4a of the connecting outer bag portion 4b are formed.
The cross-sectional passage area of both the intermediate portions 4h between the communicating portion 4f and the communication portion 4f is configured to be smaller than the cross-sectional passage area of other portions as the fluid throttle portion.

The inner bag portion 4c is formed by the heel of the wearer.
When a compressive impact force is applied to the inner bag portion 4c, the inner bag portion 4c is compressed by the compressive impact force, so that a part of the nitrogen gas in the inner bag portion 4c functions as a first communication portion 4f and a second communication portion that function as a fluid throttle portion. It connects through the portion 4g and flows into the outer bag portion 4b and the U-shaped outer bag portion 4a, and the shock effect disperses and relaxes the impact force.

[Second Embodiment] In the sole of the baseball training shoe A shown in FIG. 6, a heel-corresponding portion which is a specific portion of the bottom surface 1a of the outer sole 1 made of an elastic material such as rubber having a high friction resistance. In addition, a transparent or translucent synthetic resin display body 6 for recognizing the presence of the shock absorber 4 adhered and fixed in the recess 5 is separated from the shock absorber 4 at least partially outside. It is provided in the state of being exposed to.

That is, in the second embodiment, a synthetic resin having a semi-elliptical shape in plan view with an upward opening at a portion corresponding to the heel portion in the shoe sole, that is, a portion corresponding to the heel portion of the lower sole 2. Nitrogen gas, which is an example of a fluid, is enclosed (sealed) in a bag 4A made of steel.
Recess 5 having a depth capable of accommodating the shock absorber 4
Of the periphery of the recess 5 between the left and right side edges and the rear side edge that are substantially continuous to the U-shaped line in plan view and the corresponding side wall portions 2A and the rear wall portion 2B of the lower bottom 2. And the covered part 9
Forming a U-shaped receiving surface 2C for laminating and adhering a part of the lower part 2 in plan view, and communicating with the intermediate position of the recess 5 in the front-rear direction from above and below, the lower bottom 2 and the outer bottom 1 A display body 6 is formed by penetrating a vertical hole 8 in the through hole, and the flat-shaped display body 6 is formed so as to cover the opening of the vertical hole 8, and the whole of the display body 6 is exposed to the outside. ) Is stuck. Since the other configurations are the same as the configurations described in the first embodiment,
The same numbers as in the first embodiment are added and the description thereof is omitted.

[Third Embodiment] In the sole of the spike shoe for baseball or the training shoe for baseball A shown in FIG. 7, the heel-corresponding portion, which is a specific portion of the inner outer surface 2a of the lower sole 2, and the outer sole 1. A transparent or semi-transparent synthetic resin display 6 for recognizing the presence of the shock absorber 4 adhered and fixed in the recess 5 is provided at each of the heel-corresponding parts which are specific parts of the bottom surface 1a. It is provided in a state of being separated from 4, and at least a part of which is exposed to the outside.

That is, in the third embodiment, a synthetic resin having a substantially semi-elliptical shape in plan view with an upward opening at a portion corresponding to the heel portion in the shoe sole, that is, a portion corresponding to the heel portion of the lower sole 2. Nitrogen gas, which is an example of a fluid, is enclosed (sealed) in a bag 4A made of steel.
Recess 5 having a depth capable of accommodating the shock absorber 4
Of the periphery of the recess 5 between the left and right side edges and the rear side edge that are substantially continuous to the U-shaped line in plan view and the corresponding side wall portions 2A and the rear wall portion 2B of the lower bottom 2. And the covered part 9
Forming a receiving surface 2C having a substantially U shape in plan view for laminating and bonding a part of the lower base 2 and connecting the lower bottom 2 in a state of communicating from the inner side in the left and right direction with respect to the intermediate position of the recess 5 in the front and rear direction.
One of the display bodies 6 is inserted from the concave portion 5 side in a state where it is in contact with the shock absorbing body 4 or with a gap therebetween, and is fixed with an adhesive or the like in the mounting portion 7 formed through.

The display body 6 and the mounting portion 7 on the one hand are
Similar to the embodiment, the inner portion located on the recess 5 side is formed in a convex shape having a large width in the front-back direction of the shoe.

Further, as in the second embodiment, the recess 5 is formed.
A vertical hole 8 is formed through the lower bottom 2 and the outer bottom 1 so as to communicate with the intermediate position in the front-rear direction from above and below.
The other display body 6 which is formed in a flat shape in a state of covering the opening portion of 1 is integrally formed with the outer bottom 1 in a state where the entire display body 6 is exposed to the outside.

The rest of the configuration is the same as the configuration described in the first embodiment, and therefore, the same components will not be provided with the first configuration.
The same numbers as in the embodiment are added and the description thereof is omitted.

[Other Embodiments] (1) In each of the above-described embodiments, nitrogen gas is sealed (sealed) in the bag 4A made of synthetic resin of the shock absorber 4, but air is used instead of this nitrogen gas. It may be filled with other gas such as, or may be filled with a fluid other than other gas such as silicone oil. (2) In each of the above-described embodiments, the bag body 4A of the shock absorber 4 is made of a polyurethane elastomer material.
It may be manufactured by using other materials such as polyester elastomer, fluoroelastomer, vinyl chloride elastomer and the like. (3) In each of the above-described embodiments, a display for making the inner outer surface 2a of the shoe sole, the bottom surface 1a, or both 2a, 1a of the shock absorber 4 embedded in the heel-corresponding part in the shoe sole be recognized. Although the body 6 is provided, the display body 6 may be provided on the outer outer surface or the rear outer surface of the shoe sole in a state of being separated from the shock absorber 4 and at least partially exposed to the outside. (4) In each of the above-described embodiments, the display body 6 is made of transparent or translucent synthetic resin, but it may be made of opaque synthetic resin, or is made of a material other than synthetic resin. Good.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a spike shoe for baseball showing a first embodiment of the present invention.

FIG. 2 is a perspective view of the spike shoes for baseball as a whole.

[Fig. 3] Enlarged horizontal sectional view of the sole

[Figure 4] Partially cutaway rear view of spike shoes for baseball

FIG. 5 is an enlarged plan view of a shock absorber and end views of respective parts thereof.

FIG. 6 is a cross-sectional rear view of a main part of a baseball training shoe showing a second embodiment of the present invention.

FIG. 7 is a cross-sectional rear view of the main part of the baseball training shoe showing the third embodiment of the present invention.

[Explanation of symbols]

2 Lower bottom (midsole) 2a Inner outer surface 4 shock absorber 4A bag 4a U-shaped outer bag 4b Connecting outer bag 4c Inner bag 4d fluid inlet 4e Recess 5 recess 6 display 6a Upper surface (receiving surface) 6b Contact surface 7 mounting part 胛 cover part

Continuation of the front page (56) References Japanese Patent Laid-Open No. 10-5006 (JP, A) Actual Development 4-112606 (JP, U) US Patent 5575088 (US, A) US Patent 5353459 (US, A) US Patent 5952065 (US, A) US Patent 5704137 (US, A) US Patent 5220737 (US, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A43B 1 / 00-23 / 30

Claims (2)

(57) [Claims] 1. A shock absorber formed by enclosing a fluid in a bag is buried in a portion of the shoe sole corresponding to the heel .
The display for recognizing its existence is separated from the shock absorber
Provided with at least a part exposed to the outside
And a shock absorber formed on a lower sole which is a constituent member of the shoe sole.
Is provided in the recess of the upward opening
Side wall of the lower bottom in the state of communicating with the recess from the left and right
A transparent or translucent synthetic tree
The greasy display comes into contact with the shock absorber or opens a gap.
In this state, the upper surface of the display body is partly
A shoe sole with a receiving surface that can receive a part of the part . Wherein said display body, of the inner wall surface of the lower base,
The shoe sole according to claim 1, wherein a reinforcing contact surface is formed that is fixed to the inner wall surface portion of the periphery of the penetration forming portion of the mounting portion.