JP6975461B2 - Sole and shoes - Google Patents

Description

The present invention relates to soles and shoes that are suitable for stabilizing posture and walking and preventing walking fatigue.

For footwear such as shoes and sandals, for example, the upper part excluding the sole of the shoe is composed of the upper and the sole of the base part that supports the foot, and the sole has the upper surface of the outsole on the back side of the insole. They are combined and integrated with an adhesive or the like.

In footwear such as shoes, the sole is an important member that affects posture stability during walking and ease of walking. Such a shoe sole has a structure in which the toe side is low and the heel side is high (Patent Document 1).

Japanese Unexamined Patent Publication No. 2013-208199

However, the sole disclosed in Patent Document 1 has only an inclined structure in which the toe side is low and the heel side is high, and further development of the sole is desired.

Therefore, the present invention has focused on the unsolved problems of such conventional techniques, and provides shoe soles and shoes that are suitable for stabilizing posture and walking and preventing walking fatigue. The purpose is to provide.

[Invention 1] In order to achieve the above object, the shoe sole of the invention 1 is a shoe sole in which the outsole is fixed to the back surface of the insole, and the insole has an outer peripheral edge of the front surface portion formed by a peripheral wall portion. It is formed in the shape of a surrounding cup insole, the inside of the toe is formed to be lower than the outside, and the surface of the toe is formed on an inclined surface that inclines downward from the outside to the inside. The cross section of the bottom is formed in a curved shape with a downward concave surface between the arch and the heel, and the surface of the insole has a high rear end on the heel side and the rear end on the heel side to the above. It is formed on an inclined surface that gently slopes downward toward the arch.

[Invention 2] Further, in the sole of the invention 2, the inclination angle of the inclined surface of the toe portion is 10 degrees or less in the sole of the invention 1.

[Invention 3] Further, in the sole of the invention 3, the inclination angle of the inclined surface of the toe portion is 4.7 degrees or more in the sole of the invention 2.

[Invention 4] On the other hand, in order to achieve the above object, the shoe of the invention 4 has a sole of any one of the inventions 1 to 3 and an upper covering the instep.

As described above, according to the sole of the invention 1, it is not necessary to install the insole on the surface of the insole in advance, and the posture and walking can be stabilized and walking fatigue can be prevented only by wearing shoes. .. In particular, the effect of stabilizing the posture and walking and the effect of preventing walking fatigue by lowering the height of the toes from the outside to the inside are the action of holding the toes and small toes by the peripheral wall and the cross section of the insole. , The weight pressure by forming the surface downwardly in a concave curved shape between the arch and the heel is applied to the surface as a whole, and the insole surface has a high rear end on the heel side and the heel side. By forming an inclined surface that gently inclines downward from the rear end toward the arch, when wearing shoes, weight pressure is naturally applied to the entire sole of the toe, and the person stands upright without bending forward or turning over. The effect of Due to the synergistic effect of these actions, the posture and walking stability are good and walking fatigue can be prevented just by wearing shoes.

Further, according to the sole of the invention 2, the stability of posture and walking can be further improved.

Further, according to the sole of the invention 3, the stability of posture and walking can be further improved.

On the other hand, according to the shoes of the invention 4, the posture and walking can be stabilized and walking fatigue can be prevented only by wearing the shoes without preparing a separate insole or the like.

It is a top view of the right foot of the room shoes which shows the embodiment of the shoe by this invention. It is an inside side view of the room shoes shown in FIG. 1. It is a front view of the insole of the room shoe of the left foot paired with the room shoe shown in FIG. 1. FIG. 3 is a sectional view taken along line BB at the toe portion of the insole shown in FIG. It is an exploded perspective view of the cup insole type insole of the shoe which is the premise of this invention, and is the figure which shows the insole for the left foot. It is a front view of the insole main body part of the insole of the cup insole type shown in FIG. FIG. 6 is a sectional view taken along line AA of the toe portion of the insole main body shown in FIG. (A) is a diagram showing the heights of a plurality of left and right side surfaces in the length direction from the fingertip portion to the heel portion of the right foot insole main body paired with the left foot insole main body shown in FIG. 6, (b). Is a diagram showing a cross-sectional shape.

Hereinafter, the present invention will be described in detail based on the embodiments shown in the drawings.
Before explaining the embodiment of the present invention, the technique which is the premise of the present invention will be described with reference to FIGS. 5 to 8.

<Prerequisite technology>
In FIG. 5, the cup insole type insole 1 is an insole for the left foot, and the upper fabric portion 20 is superposed on the insole main body portion 10 and adhered by an adhesive. The insole 1 is removable from the shoe body 2, for example, as shown in FIG. The insole 1 of the present premise technique is not limited to the cup insole type, and may be a type that is adhered to the shoe body. The insole main body 10 is formed of a low-resilience material into a three-dimensional three-dimensional shape.

As shown in FIGS. 5 and 8, the insole main body 10 is formed to be thinner from the rear end 11 on the heel side to the tip 13 on the toe side through the arch portion 12. Further, the surface of the insole main body 10 has a high rear end 11, the surface is gently inclined downward toward the arch portion 12, and is inclined upward from the toe portion 14 toward the tip 13. As shown in FIG. 8B, the cross section of the insole main body 10 has a curved shape in which the bottom surface is convex downward between the toe portion and the heel portion, and the surface is concave downward between the arch portion and the heel portion. It is formed in the curved shape of. By forming the bottom surface and the surface of the insole main body 10 in a curved shape in this way, when the weight pressure is applied to the outer peripheral edge portion of the insole main body 10, the outer peripheral edge portion is deformed downward as a whole. , Weight pressure is evenly applied to the entire sole including the arch.

As shown in FIG. 6, in the insole main body 10 for the left foot, the left side in the figure is the inner side 15 on the thumb side of the left foot, and the right side in the figure is the outer side 16 on the little finger side of the left foot. In the toe portion 14, the insole main body 10 for the left foot has a wall thickness of the inner side 15 thinner than the wall thickness of the outer side 16, and the inner side 15 is lower than the outer side 16 in the width direction (left-right direction).

As shown in FIG. 7, in the insole main body portion 10 formed in a three-dimensional three-dimensional shape, the surface of the toe portion 14 is formed on an inclined surface facing downward at an inclination angle θ from the outer side 16 to the inner side 15. In the present embodiment, the inclination angle θ is set to 5 degrees. The inclination angle θ is not limited to 5 degrees, and may be formed on the surface of the toe portion 14 so that the outer side 16 is high and the inner side 15 is low. Of course, the same applies to the insoles for the right foot.

When the inner side 15 of the toe portion 14 is lower than the outer side 16 in the insole 1, the knees of the left and right feet enter the inside, and the thighs, hips, and the like are tightened. As a result, the standing posture is improved, and there is no forward bending or turning over. Also, the stride becomes wider. The inclination angle at which such an effect is most exhibited is 5 degrees, and the same effect can be obtained in the range of 5 degrees to 10 degrees. Of course, even if it is 5 degrees, 4.7 degrees or less, it does not have to be 0 degrees. In short, when wearing shoes with an insole 1, the inclination angle θ is such that both knees naturally face inward.

The upper fabric portion 20 is formed in a three-dimensional three-dimensional shape that matches the upper surface shape of the insole main body portion 10, and for example, a leather or cloth fabric 22 is adhered to a base portion 21 of a low-resilience material with an adhesive. The upper fabric portion 20 is a member that comes into direct contact with the sole of the person who wears the shoes. Therefore, the insole main body portion 10 is formed into a three-dimensional three-dimensional shape that does not hinder the inclination angle θ in the toe portion 14 and transmits the inclination angle θ to the sole of the foot.

The insole main body 10 of the insole 1 has an effect that the posture, walking stability, and prevention of walking fatigue can be achieved by providing the inclination angle θ. Further, as a configuration that further enhances this effect, the cross section of the insole main body 10 has a curved shape in which the bottom surface is convex downward between the toe portion and the heel portion, and the surface is downward between the arch portion and the heel portion. It is formed in a concave curved shape, and the surface of the insole main body 10 has a high rear end 11 and the surface is gently inclined downward toward the arch portion 12. According to these configurations, the weight pressure is evenly applied to the entire sole including the arch, so that the weight pressure is evenly applied to the little finger on the outside of the foot and the thumb on the inside. The surface of the insole body 10 has a high rear end 11, and the surface is gently inclined downward toward the arch. It becomes an upright posture without repeating.

The insole 1 of this prerequisite technique can be applied to sports shoes such as sneakers, high heels, and golf shoes, shoes for pregnant women, and shoes for commuting. Further, the insole main body portion 10 may be configured without providing the upper fabric portion 20.

The evaluation of the inclination angle of the toe portion 14 of the insole 1 and its effect is shown below.
<Examples of prerequisite technology>
The evaluation method is an insole with an inclination angle θ of the toe portion 14 of 0 degrees (flat) (hereinafter referred to as “flat insole”) and an insole with an inclination angle of 4.7 (5) degrees (hereinafter referred to as “5 degree insole”). .) And three types of insoles with an inclination angle θ of 10 degrees (hereinafter referred to as "10 degree insoles") were prepared. The target tilt angle was 5 degrees, but the tilt angle was 4.7 degrees due to measurement accuracy and the like.

Next, comparative example 1 is a shoe for pregnant women having a flat insole on the main body of the shoe for pregnant women, Example 1 is a shoe having a 5 degree insole on the main body of the shoe, and 10 degree insole is provided on the main body of the shoe. The shoes were used as Example 2.

Further, Comparative Example 2 is a high heel having a flat insole on the high heel body, Example 3 is a high heel having a 5 degree insole on the same high heel body, and Example 4 is a high heel having a 10 degree insole on the same high heel body. And said.

On the other hand, two subjects (subject 1 and subject 2) each wear the above-mentioned three types of shoes for pregnant women and high heels, respectively, and (1) standing posture, (2) walking posture, (3) walking width, (4). ) Walking stability, (5) Stability of standing posture, and (6) Changes in the position of the center of gravity on the vertical axis were evaluated.

The verification results for pregnant women's shoes are shown in Table 1, Table 2, and Table 3. The verification results for high heels are shown in Table 3, Table 4, and Table 5.

Subject 1 is a pregnant woman and subject 2 is a female office worker.
(1) Evaluation of standing posture The evaluation of the standing posture when wearing shoes is quantitatively verified from the standing posture angle by image analysis. Specifically, the standing posture when wearing shoes is photographed from the front and the side, and the correct posture, the forward leaning posture, and the backward leaning posture are quantitatively verified. Here, the correct standing posture means that a vertical line is drawn with the lateral calcaneus as the base point, and the knee, iliac crest, shoulder (acromion), and ear (ear hole) are positioned in a straight line. Say. In this verification, the correct standing posture is set to an angle of 5.0 degrees from the vertical line with respect to the outer ankle to the frontal region (Tables 1 and 4).

(2) Evaluation of walking posture For evaluation of walking posture when wearing shoes, the walking state when the speed of the treadmill is set to 4.5 [km / h] is photographed from the side, and the supporting foot in the one-leg supported state is taken. It was verified from the angle of the frontal position (walking posture angle) with respect to the vertical line used as the base point.

(3) Evaluation of walking width In the evaluation of walking width, the speed of the treadmill is set in the same way as the evaluation of walking posture, and the quantity is calculated by the stride length from the toes of the hind legs to the toes of the forefoot when both feet touch the ground during walking. Verified.

(4) Evaluation of walking stability Quantitatively verify the walking stability from the state of contact with the heel when walking with shoes. To measure the heel contact state during walking, set the speed in the same way as the evaluation of the walking posture in (2), take a picture of the heel contact state when walking with shoes from behind, and measure the number from the heel contact state with respect to the reference line. Verified.

(5) Evaluation of the stability of the static posture The evaluation of the stability of the static posture is to check whether the correct posture is secured by (a) the load difference between the left and right feet based on the sole pressure distribution map and (b) vertical. Quantitative verification was performed from the position of the center of gravity of the shaft (Tables 2 and 5). Specifically, using FPS (sole pressure measuring device: one screen), from the sole pressure distribution map when standing still, it is possible to check whether the standing posture of the entire sole can be secured (a) left and right. It was verified from the difference in foot load (Tables 2 and 5). The range of the pressure value in the sole pressure distribution map was set ^{from 44 [gf / cm 2} ] to 400 [gf / cm ^2]. (B) The vertical axis center of gravity position quantitatively evaluates the stability when standing from the vertical axis center of gravity position from the heel (0%) to the toes (100%), and the most stable region is 48% to 53%. (Tables 2 and 5).

(6) Evaluation of changes in the position of the center of gravity during walking For changes in the position of the center of gravity during walking, the position of the center of gravity is calculated from the sole pressure distribution map, and the change in the position of the center of gravity from heel contact to kicking out at the forefoot is quantitative. Analyzing and verifying. The pressure measurement range was set from 52 [gf / cm ² ] to 640 [gf / cm ² ].

A: Evaluation results when wearing shoes for pregnant women (see Table 1, Table 2, and Table 3)
(A1) Evaluation Results of Standing Posture As shown in Table 1, the standing posture angle (average) of Comparative Example 1 was 5.9 degrees, and the standing posture angle (average) of Example 1 was 5.2 degrees. The standing posture angle (average) of Example 2 was 4.3 degrees. Therefore, it was judged that the case of wearing the shoes of Example 1 was the closest to the reference value (5.0 degrees) and a more stable standing posture could be secured, and the evaluation was "excellent". In Example 2, although the posture was a little sticky at 4.3 degrees, it was judged as "OK" because it was not tilted too much forward. Comparative Example 1 was judged to be too leaning forward and evaluated as "impossible".

（Ａ２）歩行姿勢の評価結果
表１に示すように、比較例１の立位姿勢角度（平均）は７．１度、実施例１の立位姿勢角度（平均）は６．４度、実施例２の立位姿勢角度（平均）は６．７度であった。よって、実施例１の靴が最も安定した歩行姿勢が確保できていると判断し、評価を「優」とした。実施例２は実施例１よりも少し前傾となるが、大きく前傾しないので、評価を「可」とした。しかし、比較例１は大きく前傾したので、評価を「不可」とした。

(A2) Evaluation result of walking posture As shown in Table 1, the standing posture angle (average) of Comparative Example 1 was 7.1 degrees, and the standing posture angle (average) of Example 1 was 6.4 degrees. The standing posture angle (average) of Example 2 was 6.7 degrees. Therefore, it was judged that the shoes of Example 1 were able to secure the most stable walking posture, and the evaluation was set to "excellent". Example 2 leans forward a little more than Example 1, but does not lean forward significantly, so the evaluation was set to "OK". However, since Comparative Example 1 leaned forward significantly, the evaluation was set to "impossible".

(A3) Evaluation result of walking width When the posture close to upright is maintained, the knee joint is also extended and a large walking width can be secured. On the other hand, when the forward leaning posture is deep, the whole body becomes a "dogleg posture", so that the knee joint does not extend and the walking width becomes small.

As shown in Table 1, the walking width when wearing shoes is the largest, with the stride of Example 1 having the smallest one-leg supporting posture angle during walking being 65 [cm], followed by the stride of Example 2 being 62 [cm]. ], The stride length of Comparative Example 1 was 61 [cm]. As the evaluation result of the stride length, Example 1 was "excellent", and Example 2 and Comparative Example 1 were "acceptable". As a result, it can be seen that ensuring the correct posture leads to a wide stride.

(A4) Evaluation result of walking stability The walking stability is based on the center line when standing with both feet aligned, and the heel contact position during walking is stable when it is in contact with the reference line. It was verified that the deviation from the reference line to the left and right was regarded as unstable.

The verification results show that in the case of Subject 1, there were two deviations when wearing the shoes of Comparative Example 1, no deviation when wearing the shoes of Example 1, and four locations when wearing the shoes of Example 2. Met.

On the other hand, in the case of subject 2, there were 4 deviations when wearing the shoes of Comparative Example 1, 2 places when wearing the shoes of Example 1, and 5 places when wearing the shoes of Example 2. Met.

Therefore, the evaluation result was "excellent" because Example 1 was the most stable, followed by Comparative Example 1, and Example 2 was most shifted to the left and right. However, Comparative Example 1 and Example 2 were "excellent". Not possible. "

(A5) Evaluation of stability when standing still The stability when standing is analyzed from the sole pressure distribution map. It was evaluated by being located in the most stable region of 53%.

As shown in Table 2, the evaluation results were such that the difference between the left and right loads was 6.3% in the case of Comparative Example 1, 2.4% in the case of Example 1, and 1.1% in the case of Example 2. ..

The position of the center of gravity on the vertical axis was 55% in the case of Comparative Example 1, 50% in the case of Example 1, and 52.7% in the case of Example 2.

Therefore, it was judged that Example 1 and Example 2 were the most stable standing positions, and both were evaluated as "excellent". However, Comparative Example 1 was evaluated as "impossible" because the load difference between the left and right feet was large.

（Ａ６）縦軸重心位置の変動の評価
踵設地期から片足支持移行期、蹴り出し移行期（表３中の符号１〜８参照）において、歩行時の縦軸重心位置変動を、踵接地期から片足支持移行期、蹴り出し移行期の重心位置変動から評価した。

(A6) Evaluation of changes in the position of the center of gravity on the vertical axis During the transition period from the heel placement period to the one-leg support transition period and the kicking transition period (see reference numerals 1 to 8 in Table 3), the change in the position of the vertical axis center of gravity during walking is measured by heel contact. It was evaluated from the change in the position of the center of gravity from the period to the one-leg support transition period and the kicking transition period.

As shown in Table 3, there was no difference in the change in the position of the center of gravity between Comparative Example 1, Example 1, and Example 2 until the one-leg support period, but the change from the kicking transition period to the kicking was observed. As compared with Comparative Example 1 and Example 2, in Example 1, a smooth change in the position of the center of gravity was observed, and the kicking was also kicked out at the tip of the shoe (84.0%). "Yu". Example 2 Since the kick was kicked out with the toes (79.2%), the evaluation was set to "OK". However, Comparative Example 1 was evaluated as "impossible" because the kicking with the toes was weak (76.6%).

Ｂ：ハイヒール着靴時の評価結果（表４、表５、表６参照）
ハイヒール着靴時の（Ｂ１）静立姿勢の評価、（Ｂ２）歩行姿勢の評価、（Ｂ３）歩行幅の評価、（Ｂ４）歩行の安定性の評価、（Ｂ５）静立時の安定性の評価、（Ｂ６）縦軸重心位置の変動の評価は、妊婦用靴の着靴時の評価（Ａ１）〜（Ａ６）と同様に行った。

B: Evaluation results when wearing high heels (see Table 4, Table 5, and Table 6)
(B1) Evaluation of standing posture, (B2) Evaluation of walking posture, (B3) Evaluation of walking width, (B4) Evaluation of walking stability, (B5) Evaluation of stability when wearing high heels , (B6) The evaluation of the change in the position of the vertical axis center of gravity was performed in the same manner as the evaluations (A1) to (A6) at the time of wearing the shoes for pregnant women.

(B1) Evaluation results of the static posture Table 4 shows the evaluation results of the static posture.
The standing posture angle of Comparative Example 2 was 6.2 degrees, that of Example 3 was 5.1 degrees, and that of Example 4 was 5.5 degrees. Therefore, it was judged that the time when the shoes of Example 3 were worn was the closest to the standard value and a more stable standing posture could be secured, and the evaluation result was set to "excellent".

（Ｂ２）歩行姿勢の評価結果
表４に示すように、比較例２の靴を履いた時の立位姿勢角度は６．１度、実施例３の靴を履いた時の立位姿勢角度は６．１度、実施例４の靴を履いた時の立位姿勢角度は６．２度であった。よって、実施例３の靴を履いた時が最も基準値に近く、より安定した歩行姿勢が確保できていると判断し、「優」と評価した。実施例４も基準値に近いので、「可」と評価した。しかし、比較例２は基準値から離れているので、「不可」と評価した。

(B2) Evaluation result of walking posture As shown in Table 4, the standing posture angle when wearing the shoes of Comparative Example 2 is 6.1 degrees, and the standing posture angle when wearing the shoes of Example 3 is. The standing posture angle when wearing the shoes of Example 4 was 6.1 degrees, and the standing posture angle was 6.2 degrees. Therefore, it was judged that the time when the shoes of Example 3 were worn was the closest to the standard value and a more stable walking posture could be secured, and the evaluation was evaluated as "excellent". Since Example 4 is also close to the standard value, it was evaluated as “OK”. However, Comparative Example 2 was evaluated as "impossible" because it was far from the reference value.

(B3) Evaluation result of walking width In the evaluation of walking width, when the posture close to upright is maintained, the knee joint is also extended to secure a large walking width and the walking efficiency is high. On the other hand, when the forward leaning posture is deep, the whole body is in a "dogleg posture", so the knee joint does not stretch and the walking width becomes smaller.

The evaluation result of the stride was that the stride when wearing the shoes of Example 3 which had the smallest one-leg support posture angle during walking was the largest at 62.5 [cm], and then when the shoes of Example 4 were worn. The stride was 61 [cm], and the stride when wearing the shoes of Comparative Example 2 was 58.5 [cm]. Therefore, Example 3 was evaluated as "excellent", and Example 4 and Comparative Example 2 were evaluated as "possible". From this, ensuring the correct posture leads to a wide stride.

(B4) Evaluation result of walking stability In the case of subject 1, the evaluation result of walking stability was that there was one deviation when wearing the shoes of Comparative Example 2 and the time when the shoes of Example 3 were worn. There were one place and three places when the shoes of Example 4 were worn. In the case of subject 2, there are 5 deviations when wearing the shoes of Comparative Example 2, 4 deviations when wearing the shoes of Example 3, and 5 deviations when wearing the shoes of Example 4. It was a place. From this, since the shoes of Example 3 were the most stable, they were evaluated as "excellent", and Comparative Example 2 and Example 4 were evaluated as "impossible".

(B5) Evaluation of Stability at Standing As shown in Table 5, the evaluation results of stability at standing stand show that the difference between the left and right loads when wearing the shoes of Comparative Example 2 was 8.7%, and that of Example 3. It was 1.1% when wearing shoes and 1.8% when wearing the shoes of Example 4. Regarding the position of the center of gravity on the vertical axis, 63.8% when wearing the shoes of Comparative Example 2, 62.6% when wearing the shoes of Example 3, and 65.3 when wearing the shoes of Example 4. %Met. Comparative Example 2, Example 3 and Example 4 did not have a large difference in the position of the center of gravity of the vertical axis, but Comparative Example 2 was evaluated as "impossible" because the difference in left-right load was larger than that of Examples 3 and 4, and was evaluated as "Impossible". 3 and 4 were evaluated as "excellent".

（Ｂ６）縦軸重心位置の変動の評価
表６に示すように、縦軸重心位置の変動の評価結果は、片足支持期までは比較例２、実施例３、実施例４の靴を履いた時の各重心位置変動には、それぞれ差は認められなかったものの、蹴り出し移行期から蹴り出しまでの変動をみると、比較例２と実施例４の靴を履いた時に比べ、実施例３の靴を履いた時はスムーズな重心位置の変動がみられ、また蹴り出しも靴先（番号８）で蹴り出している（８３．１％）ので、実施例３を「優」と評価した。実施例４のつま先の蹴り出しは大きいので（７８．１％）、「可」と評価したが、比較例２は蹴り出しが弱い（７６．８％）ので、「不可」と評価した。

(B6) Evaluation of change in the position of the vertical axis center of gravity As shown in Table 6, the evaluation result of the change in the position of the vertical axis center of gravity was that the shoes of Comparative Example 2, Example 3, and Example 4 were worn until the one-leg support period. Although no difference was observed in the change in the position of the center of gravity at each time, the change from the kicking transition period to the kicking was examined in Example 3 as compared with the case where the shoes of Comparative Example 2 and Example 4 were worn. When wearing the shoes, the position of the center of gravity fluctuates smoothly, and the kicking is also kicked out with the tip of the shoe (No. 8) (83.1%), so Example 3 was evaluated as "excellent". .. Since the toe kicking of Example 4 was large (78.1%), it was evaluated as "possible", but in Comparative Example 2, the kicking was weak (76.8%), so it was evaluated as "impossible".

Comprehensively judging the above evaluation results, some items are judged as "OK" for flat insoles, but they are evaluated as "impossible", and 5 degree insoles are evaluated as "excellent". The insoles are evaluated as "OK".

上記実施例によれば、姿勢及び歩行が安定する結果、骨盤矯正の効果、Ｏ脚矯正の効果、内腿強化の効果（＝ダイエット効果）及び妊婦にあっては早産防止の効果が得られる。

According to the above embodiment, as a result of stabilizing the posture and walking, the effect of pelvic correction, the effect of O-leg correction, the effect of strengthening the inner thigh (= diet effect), and the effect of preventing premature birth can be obtained in pregnant women.

<Embodiment>
Next, the present invention will be described in detail based on the embodiments shown in the drawings.
In FIGS. 1 and 2, the shoe 101 is a so-called room shoe, which is for the right foot, which is one of a pair of left and right shoes. The shoe 101 is composed of a sole 102 and an arch-shaped upper (instep) 103. The sole 102 has a structure in which the outsole 105 is adhered to the back surface of the insole 104 with an adhesive.

As shown in FIG. 3, the insole 104 is formed into a three-dimensional three-dimensional shape by, for example, a low-resilience material. The surface shape of the surface portion 104A forming the upper surface of the insole 104 is the same as the surface shape of the insole main body 10 shown in FIGS. 6 to 8 of the prerequisite technology. That is, the surface shape of the insole 104 is such that the rear end 111 on the heel side is high, the surface is gently inclined downward toward the arch portion 112, and the surface is inclined upward from the toe portion 114 toward the tip 113.

As shown in FIG. 3, the insole 104 for the left foot is the medial 115 on the left side of the big toe side of the left foot and the lateral 116 on the right side of the little finger side of the left foot. The insole 104 for the left foot has a toe portion 114 in which the thickness of the inner 115 is thinner than the thickness of the outer 116, and the surface of the inner 115 is lower than the surface of the outer 116 in the width direction (left-right direction). There is.

The insole 104 forms a cup insole shape by being integrally erected upward along the outer peripheral edge of the surface so that the peripheral wall portion 117 surrounds the periphery. The insole 104 is integrally formed with the surface portion 104A and the peripheral wall portion 117, and the foot is attached so that the peripheral side surface is wrapped around the inner peripheral surface of the peripheral wall portion 117.

As shown in FIG. 4, in the insole 104 having a cup insole shape formed in a three-dimensional three-dimensional shape, the surface of the toe portion 114 is inclined from the outer side 116 to the inner side 115, similarly to the insole main body 10 shown in FIG. It is formed on a downwardly inclined surface at an angle θ. In the present embodiment, the inclination angle θ is set to 5 degrees. The inclination angle θ is not limited to 5 degrees, and may be formed on the surface of the toe portion 114 so that the outer side 116 is high and the inner side 115 is low. Of course, the same applies to the insole for the right foot.

When the inner 115 of the toe portion 114 is lower than the outer 116 in the insole 104, the knees of the left and right feet enter the inside, and the thighs, hips, etc. Is tightened. As a result, the standing posture is improved, and there is no forward bending or turning over. Also, the stride becomes wider. The inclination angle at which such an effect is most exhibited is 5 degrees, and the same effect can be obtained in the range of 5 degrees to 10 degrees. Of course, even if it is 5 degrees, 4.7 degrees or less, it does not have to be 0 degrees. ..

According to the shoe 1 of the present embodiment, in the toe portion 114 of the insole 104, the toe resting on the surface portion 104A is lowered from the outer little finger side toward the inner thumb side. Inevitably, an inward force is applied to the thumb, which abuts on the inner peripheral wall surface of the peripheral wall portion 117 with which the thumb touches, and the reaction force causes the surface portion 104A of the insole 104 to face outward in the width direction with the back of the thumb. push. However, in the present embodiment, since the peripheral wall portion 117 and the surface portion 104A are integrally molded, the surface portion 104A does not shift outward in the width direction. Therefore, since the legs do not shift in the left-right direction during walking, fatigue does not occur.

That is, since the toe portion 114 of the surface portion 104A of the insole 104 is inclined downward from the outside to the inside at an inclination angle θ, the posture and walking can be performed only by wearing the shoes 101 without providing the insole of the prerequisite technology. Is stable and can prevent walking fatigue.

In the shoe sole 102 of the present embodiment, the insole 104 is adhered to the outsole 105 and the bottom surface is a flat surface. The amount of deformation that transforms into is small. However, in the present embodiment, since the insole 104 has a cup insole type structure in which the peripheral wall portion 117 is integrally molded, the peripheral wall portion 117 prevents the movement of the toes in the width direction, and the arch portion is the surface portion 104A. It is held in a predetermined position without causing a positional deviation with respect to the relative. Therefore, in the toe portion, the inner thumb and the outer little finger surely abut on the surface portion 104A inclined at the inclination angle θ.

Further, the rear end 111 of the surface portion 104A is high, and the surface is gently inclined downward toward the arch portion 112, so that when the shoes 101 are worn, weight pressure is naturally applied to the entire sole of the toe portion 114. The effect of standing upright without bending forward or turning over is demonstrated. Therefore, the holding action of the toes by the peripheral wall portion 117 constituting the cup insole shape is ensured. Therefore, if the shoe 101 provided with the sole 102 of the present embodiment is worn, the posture and walking can be stabilized, and walking fatigue can be prevented.

In particular, when it is applied to room shoes as shoes 101, the standing posture is improved and fatigue is less likely to occur when standing indoors.

In the present embodiment, the form of shoes 101 is room shoes, but it can be applied to sports shoes such as sneakers, high heels, and golf shoes, shoes for pregnant women, and shoes for commuting.

1 ... Insole, 2 ... Shoe body, 10 ... Insole body, 101 ... Shoes, 2,102 ... Sole, 103 ... Upper, 104 ... Insole, 105 ... Outsole, 104A ... Surface, 11,111 ... Rear end, 12, 112 ... Arch part, 13, 113 ... Tip, 14, 114 ... Toe part, 15, 115 ... Inside, 16, 116 ... Outside, 117 ... Peripheral wall part, 20 ... Upper fabric part, 21 ... Base, 22 ... Fabric θ ... Tilt angle

Claims (4)

A shoe sole with an outsole fixed to the back of the insole,
The insole is formed in the shape of a cup insole in which the outer peripheral edge of the surface portion is surrounded by a peripheral wall portion, the inside of the toe portion is formed to be lower in height than the outside, and the surface of the toe portion is formed from the outside to the inside. formed on the inclined surface inclined downward toward the surface of the insole is inclined faces the rear end of the heel side high and gently inclined downward toward the rear or al earth trodden not part of the heel-side is formed on the shoe sole cross-section of the insole is, the surface between the heel portion from the arch portion, characterized in that it is formed into a concave curved shape downward. In claim 1,
A sole characterized in that the inclination angle of the inclined surface of the toe portion is 10 degrees or less. In claim 2,
A sole characterized in that the inclination angle of the inclined surface of the toe portion is 4.7 degrees or more. A shoe having the sole according to any one of claims 1 to 3 and an upper covering the instep.

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