JP4592429B2 - Outsole of footwear and footwear - Google Patents

Description

  The present invention relates to a sole of footwear in which hard and soft materials are combined so as to be easily walked, and footwear provided with the sole.

  The ease of walking of the footwear depends on the flexibility of the part corresponding to the middle foot phalanx joint part, but for example, in the footwear described in Patent Document 1, a soft material is applied to the part corresponding to the heel part of the insole, The mobility corresponding to the second to fifth buttocks is made good by using a hard material.

  In addition, in the bottom of the footwear described in Patent Document 2, the toe is easily bent by combining the hard material and the soft material in two upper and lower layers.

Furthermore, in the footwear described in Patent Document 3, a substantially L-shaped groove is extended from the base part of the second heel part along the base part of the fifth heel part on the bottom surface, and further on the front edge of the arch on the bottom surface. By providing a laterally extending groove for forming a stable area at the corresponding site, the flexibility of the forefoot is improved.
JP 02-114904 A No. 02-23126 Notohei 05-4724

  The movement of the middle foot joint joint during walking is mildly dorsiflexion when touching the heel, intermediate position when touching the sole, and maximum dorsiflexion when crossing the foot. Do not footwear is ideal.

  Some sports shoes use soft materials for the whole or part of the sole so that the middle foot joint joints of the sole can bend easily. For example, a heel with a height of 3 cm or more is provided. It is not found in footwear with high heels such as women's pump shoes (hereinafter referred to as pumps). This is because the aesthetic appearance is prioritized over the functionality that the bottom-foot metatarsal joint joint is easily bent.

  Conventionally, footwear with high heels, such as pumps, has not been designed to bend easily by flexing the middle foot phalanx joint, but it is meant to be part of fashion, Since it is difficult to bend the metatarsal joint joint part, it has been used in various situations, causing problems such as heels coming out and poor ability to transmit exercise force, resulting in fatigue.

  The present invention was devised in view of the above circumstances, and an object of the present invention is to provide an outsole that is easy to walk and less fatigue, and that is effective when applied to footwear with a particularly high heel, and footwear having the outsole. is there.

In order to achieve the above object, the invention according to claim 1 is a sole of footwear in which a bottom surface on which soil is stepped is integrally formed,
The bottom surface is
And the soft region formed by using a soft material contains at least a portion corresponding to the metatarsophalangeal joint and mother toes in the foot,
It extends in a substantially straight line from the approximate center of the tip of the bottom surface to the vicinity of the second distal phalanx and the second middle phalanx adjacent to the buttock and bends from the vicinity of the second middle phalanx to A substantially L-shaped groove formed so as to reach the outer end through the vicinity of the tip of 5 middle phalanx;
In a tip region formed between the substantially L-shaped groove and a substantially center of the tip of the bottom surface to the outer end, a non-slip region formed using a hard material,
Which is the outsole of the footwear, characterized in that it includes.
Further, the invention according to claim 2 is the sole of the footwear according to claim 1 described above ,
The tip region including the anti-slip region is a sole of footwear characterized by being a hard region formed using the hard material .

Further, the invention according to claim 3 is the sole of the footwear according to claim 1 or claim 2 ,
The soft region is
Proximal fold bending guide groove provided from the inner side end of the bottom surface toward the intermediate portion of the bottom surface in the vicinity of the buttock portion,
A distal thumb bending guide groove provided on the inner side end side of the bottom surface in front of the proximal thumb bending guide groove;
A proximal metatarsal joint flexion induction groove provided in the vicinity of the metatarsal joint joint portion from the intermediate portion of the bottom surface toward the outer side end of the bottom surface;
A distal metatarsal joint bending induction groove provided on the outer side end side of the bottom surface in front of the proximal metatarsal joint bending induction groove;
The sole of the footwear characterized by having .

Further, the invention according to claim 4 is the sole of the footwear according to any one of claims 1 to 3 ,
The soft region has a pressure-removal portion provided in a portion corresponding to the second metatarsal head and the third metatarsal head so that the front-rear direction is recessed in an egg shape so as not to contact the ground. This is the bottom of footwear.

Further, the invention according to claim 5 is a footwear having a bottom that is integrally formed with a bottom surface on which soil is stepped,
The bottom surface is
A soft region formed using a soft material including at least a portion corresponding to the middle foot joint joint portion and the toe portion of the foot;
It extends in a substantially straight line from the approximate center of the tip of the bottom surface to the vicinity of the second distal phalanx and the second middle phalanx adjacent to the buttock and bends from the vicinity of the second middle phalanx to A substantially L-shaped groove formed so as to reach the outer end through the vicinity of the tip of 5 middle phalanx;
In a tip region formed between the substantially L-shaped groove and a substantially center of the tip of the bottom surface to the outer end, a non-slip region formed using a hard material,
Which is a footwear, characterized in that it includes.
Furthermore, the invention described in claim 6 is the footwear described in claim 5,
The footwear is characterized by having a heel height of 3 cm or more.

According to the bottom of footwear of claim 1, wherein, the bottom surface of the outsole, soft region using a soft material is formed at least include a portion corresponding to the metatarsophalangeal joint and the hallux portion in the foot it allows the metatarsophalangeal joint and the hallux portion is easily bent, the transmission efficiency of the mother趾屈song force is good is the main driving force at the time of walking that. Further, the bottom surface of the outsole, to the outside of the tip region than the base foot portion side in the soft region by Rukoto is formed non-slip area with hard material, with anti-slip can be reduced when walking, walking It is possible to converge the side swaying of the time to the center , so that even if the walking speed increases, it is easy to walk and is not fatigued.
According to the sole of the footwear described in claim 2, the tip region including the anti-slip region is a hard region formed using a hard material in the sole of the footwear according to claim 1. In addition to the effect described in item 1, the hard region can more reliably converge the side sway during walking to the center.

Further , according to the sole of the footwear according to claim 3 , the proximal toe bending induction groove and the distant groove in the soft region so that the metatarsal joint joint portion is assisted in the physiological bending direction during walking. By providing the proximal hip flexion induction groove, the proximal metatarsal joint flexion induction groove, and the distal metatarsal joint flexion induction groove , the metatarsal joint joint part becomes easy to bend at the crossing, Since the transmission efficiency of the walking propulsion force is improved , the energy efficiency is improved, and even if the walking speed increases, it becomes easier to walk and less fatigue. In addition, since the soft region is easily bent, it is difficult to remove the heel during walking.

Further, according to this bottom of footwear of claim 4, wherein the soft area causes removal pressure portion at a portion corresponding to the second metatarsal head portion and the third metatarsal head portion recessed in the longitudinal direction in the oval the Rukoto provided so as not to contact the ground Te, second, because it depressurization against site only corresponding to the third metatarsal head, pressure is the second metatarsal of as a reaction from the ground with respect to weight bearing femoral head part and for no longer concentrate on the third metatarsal head portion, as well as less likely to occur callus, can improve the callus that has already occurred by using conventional footwear for a long time, the pain associated with this It can be reduced.

Further , according to the footwear described in claim 5, since the bottom of the above-mentioned claim 1 is provided, the physiological movement of the foot during walking is not hindered, and it is easy to walk even if the walking speed increases. It ’s hard to get tired.

According to the footwear described in claim 6, since the heel height is 3 cm or more in the footwear of the invention described in claim 5, the effect described in claim 5 is conspicuous.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a first embodiment of the invention will be described with reference to the drawings. FIG. 1 is a bottom view of the sole (for left foot) of a shoe according to the first embodiment of the present invention, and FIG. 2 is an explanatory view of the function and effect of the first embodiment. FIG. 3 is a diagram showing the positional relationship between the bottom of FIG. 1 and the skeleton of the left foot, and FIG. 4 is a perspective view of the pump using the bottom of FIG.

  According to FIG. 2, at the normal walking speed, the locus of the center of pressure (Center Of Pressure, hereinafter referred to as COP) is from the heel to the foot as indicated by the arrow 9 until the foot touches and steps on. The trajectory of the COP gradually converges toward the center as the walking speed increases as it passes through the outside of the head and crosses the foot width from the outside to the inside and moves to the tip of the toe portion 12, and the walking speed increases. become that way.

  Energy efficient walking means that the range of movement of the center of gravity at a height of about 55% of the height from the bottom of the foot vertically upward is small, and the COP trajectory moves laterally at the foot. Is achieved by converging toward the center. For this reason, when the walking speed increases, the COP changes in the direction of the arrow 10 in order to improve the energy efficiency. Therefore, the muscles of the lower limbs increase the muscle load and increase the fatigue level than the normal walking speed.

  Further, when the outside of the bottom is a soft material or worn, it is difficult to converge around the COP locus, so that the muscle load on the lower limbs is further increased and the degree of fatigue is increased.

  Therefore, by using a hard material for the outer part of the forefoot part to suppress the side swaying of the COP at the time of crossing, the COP trajectory is converged to the center part side, and energy efficient walking is performed when the walking speed increases. Can be obtained.

  Further, at the time of crossing, the rear side of the middle foot phalanx joint portion 11 is not grounded, and the bottom flexion force of the main heel portion 12 among the grounded front feet is the driving force for walking. With reference to FIG. 3, if the portions corresponding to the middle foot phalanx joint portion 11 and the main heel portion 12, which are bending portions at this time, are easily bent, the motion transmission efficiency is good. By using a soft material for the part corresponding to the hull part 12, it is possible to satisfactorily transmit the hind bend bending force for the crossing.

  In order to obtain the above effects, as shown in FIGS. 1 to 3, the portion 1 (hereinafter referred to as the soft portion) made of the soft material is made of a soft material having a hardness of about 65 to 75, and the midfoot phalanx In order to facilitate the bending of the joint portion 11 and the main heel portion 12, the shape is made substantially L-shaped to cover the range. The surface may be embossed to prevent slipping.

  The soft part 1 is provided with a proximal metatarsophalangeal joint bending guide groove 4 and a distal metatarsal joint bending induction groove 5 having a depth of about 0.5 to 1 mm. Assist in bending. In addition, a proximal torsion bending guide groove 6 and a distal toe bending induction groove 7 having a depth of about 0.5 to 1 mm are provided to assist the bending of the toe portion 12.

  The outer portion of the main body 12, that is, the anti-slip portion 2 and the outer portion 3 (hereinafter referred to as the outer hard portion) are made of a hard material having a hardness of about 75 to 85, and the COP during walking does not flow outward. To guide to converge toward the center. For the purpose of preventing slipping during walking, the anti-slip portion 2 is preferably provided with a protrusion pattern having a thickness of about 0.5 to 1 mm. Further, the same hard material as that of the anti-slip portion 2 is used for a portion 8 (hereinafter referred to as a rear hard portion) behind the soft portion 1.

  The material of the soft part 1, the non-slip part 2, the outer hard part 3, and the rear hard part 8 may be a material usually used for the sole of shoes, such as rubber and foamed latex.

  It is preferable in terms of strength and appearance that the soft portion 1, the anti-slip portion 2, the outer hard portion 3, and the rear hard portion 8 are integrally formed.

  The bottom of the present invention is plate-like and has a uniform thickness, preferably about 3 to 5 mm for pumps and about 5 to 15 mm for women's casual shoes or men's shoes.

  As shown in FIG. 3, the pump shown in FIG. 4 includes a proximal metatarsal joint flexion inducing groove 4 and a distal metatarsal joint flexing inducing groove 5 in the bottom. Since the foot is sandwiched and the proximal fold bending guide groove 6 and the distal fold bending guide groove 7 are set at the position of the heel portion 12, the size of the bottom is also appropriate according to the size of the footwear. It is necessary to increase or decrease.

  When walking with this pump, the proximal metatarsophalangeal joint bending guide groove 4 and the distal metatarsal joint bending induction groove 5 on the bottom bottom sandwich the metatarsal joint joint portion 11, Since the bending of the middle foot phalanx joint portion 11 is assisted and the proximal fold bending guiding groove 6 and the distal fold bending guiding groove 7 assist the bending of the heel portion 12, it is easy to walk and less fatigue.

  Next, a second embodiment of the present invention will be described. FIG. 5 is a bottom view of the sole (for the left foot) of the shoe according to the second embodiment, and FIG. 6 is a diagram showing the positional relationship between the pressure-removal portion provided on the sole of FIG.

  As shown in FIG. 5, in the present embodiment, the depth corresponding to the second metatarsal head 13 (see FIG. 6) and the third metatarsal head 14 (see FIG. 6) is about 1 to 3 mm deep. A hollow pressure-reducing part 1a is provided.

  For example, if the hip is higher than the forefoot, such as pumps, the weight load concentrates on the forefoot and the lateral arch that holds the foot skeleton disappears, so it is not in the form of bone that originally receives weight Since pressure concentrates on the second metatarsal head 13 and the third metatarsal head 14, there is a problem that wrinkles are generated at the site as a biological defense reaction, pain is generated, and walking becomes difficult.

  Therefore, in the second metatarsal head portion 13 and the third metatarsal head portion 14, in order not to concentrate the pressure as a reaction from the ground to the weight load, the pressure removing portion 1a is provided so as not to contact the ground. When the pressure is released, not only is it difficult to cause wrinkles, but also the wrinkles that have already occurred by using conventional footwear for a long time can be improved, and the pain associated therewith can be reduced.

  In the above-described embodiment, the case has been described by taking an example of the bottom and footwear having a sharp tip, but the tip may be rounded or the tip may be any shape such as a wide tip. The present invention can also be applied. In addition, various modifications can be made to the above embodiment without departing from the gist of the present invention.

It is a bottom view of the sole (for left foot) of the shoes which are the 1st embodiment of the present invention. It is explanatory drawing of the effect of 1st Embodiment, and is a COP locus | trajectory at the time of the frame | skeleton and direction seen from the bottom face of the left foot. It is a figure which shows the positional relationship of the base of FIG. 1, and the skeleton of a left foot. It is the perspective view seen from the slanting lower part of the pump using the bottom of FIG. It is a bottom view of the bottom (for left foot) of the shoes which are the 2nd embodiment of the present invention. It is a figure which shows the positional relationship of the decompression part provided in the bottom of FIG. 5, and the skeleton of a left foot.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Soft part 1a Pressure reduction part 2 Anti-slip part 3 Outer hard part 4 Proximal metatarsal joint joint bending induction groove 5 Distal metatarsal joint articulation induction groove 6 Proximal tibial bending induction groove 7 Distal thigh Bending guide groove 8 Back rigid part 11 Metatarsal joint joint part 12 Mother hip part 13 Second metatarsal head 14 Third metatarsal head

Claims (6)

The bottom of the footwear is the sole of the footwear that is integrally formed,
The bottom surface is
And the soft region formed by using a soft material contains at least a portion corresponding to the metatarsophalangeal joint and mother toes in the foot,
It extends in a substantially straight line from the approximate center of the tip of the bottom surface to the vicinity of the second distal phalanx and the second middle phalanx adjacent to the buttock and bends from the vicinity of the second middle phalanx to A substantially L-shaped groove formed so as to reach the outer end through the vicinity of the tip of 5 middle phalanx;
In a tip region formed between the substantially L-shaped groove and a substantially center of the tip of the bottom surface to the outer end, a non-slip region formed using a hard material,
Outsole of the footwear, characterized in that it comprises a. The sole of the footwear according to claim 1 , wherein the tip region including the anti-slip region is a hard region formed using the hard material . The soft region is
Proximal fold bending guide groove provided from the inner side end of the bottom surface toward the intermediate portion of the bottom surface in the vicinity of the buttock portion,
A distal thumb bending guide groove provided on the inner side end side of the bottom surface in front of the proximal thumb bending guide groove;
A proximal metatarsal joint flexion induction groove provided in the vicinity of the metatarsal joint joint portion from the intermediate portion of the bottom surface toward the outer side end of the bottom surface;
A distal metatarsal joint bending induction groove provided on the outer side end side of the bottom surface in front of the proximal metatarsal joint bending induction groove;
Claim 1 or claim 2 outsole of footwear, wherein the having. The soft region has a pressure-removal portion provided in a portion corresponding to the second metatarsal head and the third metatarsal head so that the front-rear direction is recessed in an egg shape so as not to contact the ground. The sole of the footwear according to any one of claims 1 to 3 . Footwear with an outsole that is integrally formed with a bottom that steps on the soil,
The bottom surface is
A soft region formed using a soft material including at least a portion corresponding to the middle foot joint joint portion and the toe portion of the foot;
It extends in a substantially straight line from the approximate center of the tip of the bottom surface to the vicinity of the second distal phalanx and the second middle phalanx adjacent to the buttock and bends from the vicinity of the second middle phalanx to A substantially L-shaped groove formed so as to reach the outer end through the vicinity of the tip of 5 middle phalanx;
In a tip region formed between the substantially L-shaped groove and a substantially center of the tip of the bottom surface to the outer end, a non-slip region formed using a hard material,
Footwear comprising the. The footwear according to claim 5, wherein the height of the heel is 3 cm or more.

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