KR100928444B1 - A midsole for health footwear having a barefoot technology - Google Patents

Abstract

PURPOSE: A manufacturing method of a sensor protrusion shoe sole is provided, which does not cause impact to a leg and joint of the body and makes soft and natural walking. CONSTITUTION: A manufacturing method of a sensor protrusion shoe sole comprises a process of manufacturing a top midsole(20) in which the hard mid sole shank is mounted; a process of making the sensor lower part midsole(30) in which the top insertion protrusion is formed in the upper part and left and right side are inclined in the arc form; a process of making an outsole(40) in which left and right side are inclined in the arc form; a process of uniting the lower part of the sensor lower part midsole with an outsole after combining the sensor lower part midsole to the lower part of the top midsole.

Description

A method for manufacturing shoe soles inclined in the form of arcs on both left and right sides

The present invention relates to a method of manufacturing a shoe sole inclined to the left and right sides in an arc shape, and more specifically, the bottom surface of the shoe sole is formed in a convex arc-shaped curved shape from the left end to the right end to be convex downward. 신발 The sole midsole of the sensing body, which is formed in an inclined shape in the shape of an arc and is coupled to the upper part of the sole of the sole of the sole of the sole of the shoe, is made of softer material than the hardness of the outsole and the hardness of the material of the upper midsole. On the bottom surface of the ground to the ground to form a flat slip form with the ground, and the left and right sides showing the effect of feeling like walking on the sand barefoot is related to the manufacturing method of the inclined sole.

In general, the movement of the foot on the ground during walking is a three-step process, in which the left and right feet repeat the landing step by the heel, the center moving step from the heel to the heel, and the step of the heel pushing off the ground. In conventional shoes, the shape of the heel is almost perpendicular to the ground, and in the case of shoes, a sharp edge is formed on the heel so that the edge touches the ground first at the landing stage. Because of its shape, the impact at the time of landing is large, and the movement to the center movement stage, which is the next stage of landing, is performed at once, so that a sudden impact force is transmitted to each joint of the leg and body as well as the ankle joint, resulting in poor landing feeling and poor walking. Naturally.

The present invention is to solve the problems shown in the conventional shoes described above, the bottom surface of the shoe sole is formed in the form of convex arc-shaped convex in the downward direction from the left end to the right end so that the left and right sides are inclined arc-shaped curved surface It is formed in the shape and the material of the lower midsole of the sensor coupled to the upper part of the sole of the sole of the shoe is made of softer material than the material hardness of the outsole and the hardness of the upper midsole. The purpose of the present invention is to provide an inclined shoe sole in the shape of an arc in which the landing part forms a flat slip shape with the ground and the effect of feeling like walking on the sand barefoot.

Shoe soles inclined in the shape of the left and right sides of the present invention is formed in the shape of a curved surface in which the bottom surface of the shoe sole is convex in the downward direction from the left end to the right end, the left and right sides are formed in the inclined shape, shoes Since the material of the lower midsole coupled to the upper part of the sole of the outsole is made of softer material than the material hardness of the outsole and the hardness of the upper midsole, As the midsole is inflated and restored in the restored state, the area landing on the ground at the bottom of the shoe sole forms a flat slip shape with the ground, so that the amount of impact due to landing on the sole surface of the shoe is relatively reduced, and the soft sensor lower midsole Because it contracts in parallel with the ground, it feels like walking on the sand barefoot The upper midsole, which has a high cushioning efficiency and a soft landing, has a soft sensor lower midsole coupled to the lower part, and reduces the impact hardness by half in case the soft sensor is not combined. Increase the effect more than 2 times.

According to the present invention, since a soft sensing body lower midsole is compressed, the part landing on the ground at the bottom of the shoe sole forms a flat slip shape with the ground, so that the ankle joint, the leg and each joint of the body are soft without causing a sudden impact. Natural walking is achieved, and when the bottom surface of the sole is out of the ground during the departure stage, the soft sensor lower midsole that was contracted in the previous stage is restored and the repulsion occurs and it pushes the foot of the pedestrian in the direction of progress. It has the effect of walking up, and the walking efficiency is high, and it is possible to walk lightly and lightly.

The present invention is bonded to the lower part of the upper and made of any one material selected from synthetic resin and rubber in the manufacturing method of the shoe sole consisting of the midsole and outsole, the hardness of the material (Japan ASKER TYPE C hardness meter: CELLULAR RUBBER & YARN PACKAGE DUROMETER HARDNESS measured with a hardness tester) of 40 to 90, and the edge from the front to the rear of the bottom surface of the upper midsole so that the upper inserting projection 36 of the lower midsole 30 of the sensor can be inserted. 21, the lower insertion groove 25 is formed inside the upper midsole 20 to manufacture the upper midsole 20, the hard midsole shank 70 is mounted from the front portion to the rear portion in the upper position fair; It is composed of any one material selected from synthetic resin and rubber, and the hardness of the material (as measured by Japan ASKER TYPE C hardness tester: CELLULAR RUBBER & YARN PACKAGE DUROMETER HARDNESS hardness tester) is 5 to 50 compared to the material hardness of the upper midsole 20. It is made of a smaller soft material, and the upper insertion protrusion 36 is formed on the upper part so that it can be inserted into the lower insertion groove 25 of the upper midsole 20, and the bottom surface is left from the front part to the rear part. Forming a convex arc shape in the lower direction over the right side in the step of producing a sensor lower midsole 30 inclined in both sides of the arc shape; A process of manufacturing the outsole 40 in which the bottom surface is formed in a convex shape in which the bottom surface is convex in the downward direction from the left side to the right side in the front portion; And combining the outsole 40 to the lower part of the sensor lower midsole 30 after combining the sensor lower midsole 30 to the lower portion of the upper midsole 20. The present invention relates to a method of manufacturing a shoe sole inclined in an arc shape.

The present invention is coupled to the lower part of the upper and made of any one material selected from synthetic resin and rubber in the sole of the shoe made of midsole and outsole, the hardness of the material (Japan ASKER TYPE C hardness meter: CELLULAR RUBBER & YARN PACKAGE DUROMETER HARDNESS It is made of a material having a hardness of 40 ~ 90), the inner side of the foot arch portion 22 is formed in a convex dome shape in the upper direction so that the inner part of the foot arch portion of the foot is in close contact, An upper midsole 20 in which a lower insertion groove 25 is formed in the edge 21 from the front portion to the rear portion of the upper midsole bottom surface so that the upper insertion protrusion 36 of the 30 may be inserted; Is coupled to the bottom of the upper midsole 20, made of any one material selected from synthetic resin and rubber, the hardness of the material (as measured by Japan ASKER TYPE C hardness tester: CELLULAR RUBBER & YARN PACKAGE DUROMETER HARDNESS hardness tester) The upper midsole 20 is made of a soft material of 5 to 50 smaller than the hardness of the material, and the upper insertion protrusion 36 is formed on the upper portion so as to be inserted into the lower insertion groove 25 of the upper midsole 20. A sensing body lower midsole 30 inclined in an arc shape in which a bottom surface is convex in a downward direction from a left side to a right side from a front side to a rear side; And an outsole coupled to a lower portion of the sensor lower midsole 30 and formed in a convex arc shape in which the bottom surface is convex in the lower direction from the left side to the right side from the front portion to the rear portion. The left and right sides characterized by consisting of 40 relates to a shoe sole protrusion inclined in the form of an arc.

In the sole of the left and right sides of the present invention inclined in an arc shape, the upper midsole has a rear position at the front of the upper midsole bottom surface; And a plurality of supports in any one form selected from the pillar support protrusion 24 and the mulberry support protrusion 26 inside the edge 21 at any one position selected from the rear portion at the center of the upper midsole bottom surface. The projection is formed, characterized in that the tunnel 28 is formed between the support projection.

In the sole of the left and right sides of the present invention inclined in an arc shape, the heel of the upper midsole and the heel of the lower midsole are inclined in an arc shape.

In addition, the left and right sides of the present invention is inclined shoe sole is inclined front and rear shape shank 50 from the front portion to the rear portion inside the upper midsole 20; The front and rear shank 50 is mounted on the upper part of the upper midsole 20 from the front part to the rear part; The front and rear shank 50 is mounted to the lower portion of the upper midsole 20 from the front to the rear; The front and rear shank 50 is mounted on the lower part of the sensor lower midsole 30 from the front part to the rear part; A waist-shaped shank 60 is built in the inner central position of the upper midsole 20; Inside the upper midsole 20, the front and rear shank 50 is built from the front to the rear portion, and the hard midsole shank 70 is built from the front portion to the rear portion of the upper midsole 20. that; Inside the upper midsole 20, the front and rear shank 50 is built from the front to the rear portion, and the hard midsole shank 70 is built from the front portion to the rear portion of the upper midsole 20. that; A waist-shaped shank 60 is built in the inner central position of the upper midsole 20 and the hard midsole shank 70 is mounted on the upper portion of the upper midsole 20 over the rear portion; A hard midsole shank 70 is mounted on the upper part of the upper midsole 20 from the front part to the rear part; A hard midsole shank 70 is mounted on the lower part of the upper midsole 20 from the front part to the rear part; And a shank selected from among those in which the hard midsole shank 70 is mounted from the front part to the rear part in the lower part of the sensor lower midsole 30.

The left and right sides of the present invention inclined upwardly outsole is an outsole 80 is coupled to the upper. 1, 2, 4 to 6 in the sole of the left and right sides of the present invention inclined upwardly in an arc shape, the upper midsole 20 is the upper side of the foot arch 22 corresponding to the inner side of the upper portion of the upper direction As it is formed in the convex shape of the domed curved surface, the inner side of the foot arch portion corresponding to the inner side of the center portion of the sole may be in close contact with the upper surface of the sole.

In the sole of the left and right sides of the present invention inclined upwardly in an arc shape, the upper midsole 20 is formed in a separable coupling form with the sensor lower midsole 30, and is preferably manufactured by bonding using an adhesive. In addition, the upper midsole 20 in the left and right sides of the shoe inclined upwardly of the present invention may be manufactured in an integrated form with the lower body midsole 30 of the sensor.

In the sole of the left and right sides of the present invention inclined upward in an arc shape, the upper midsole 20 has a lower insertion groove 25 inside the bottom edge 21 from the front portion to the rear portion as shown in FIGS. 8 to 11. Is formed, the upper insertion protrusion 36 is formed on the upper portion of the sensor lower midsole 30 to be inserted into the lower insertion groove 25 of the upper midsole 20, as shown in Figs. The sole surface of the shoe sole is formed in an arc-shaped curved surface convex downward from the left end portion to the right end portion, and both sides of the bottom surface are formed in an inclined shape in the shape of an arc, and the upper portion of the sole outsole 40 of the sole surface of the sole Since the material of the sensor lower midsole 30 coupled to the material is made of a soft material of 5 to 50 smaller than the material hardness of the outsole 40 and the material hardness of the upper midsole 20, the elasticity and resilience of the sole is improved. 2 to 3 times There is an increasing effect.

In the case of the foot of the left and right sides of the present invention wearing an inclined shoe sole in an arc shape, the movement of the foot with respect to the ground during walking is divided into a landing step as shown in FIG. 14, a center moving step as shown in FIG. Can be observed.

The left and right sides of the present invention are inclined upward in the shape of the sole, as shown in Figure 8 to 13 the sole surface of the sole is formed in the form of a convex arc-shaped convex downwards from the left end to the right end to the bottom both sides It is formed in an inclined shape of the arc shape, the material of the sensor lower midsole 30 coupled to the top of the sole outsole 40 of the shoe sole is the material hardness of the outsole 40 and of the upper midsole 20 Since it is made of a soft material of 5 to 50 smaller than the hardness of the material, when the heel is landed while the shoe is worn, the sensor lower midsole 30 is expanded and restored as shown in FIGS. 9, 11, and 13. The bottom center portion corresponding to A-A 'of FIG. 3 starts to land first.

As the movement of the landing progresses in the landing step, the sensor lower midsole 30 of the sole of the present invention as shown in FIGS. 8 to 13 may be inserted into the lower insertion groove 25 of the upper midsole 20. The upper insertion protrusion 36 is formed on the upper portion of the 30, and the portion landing on the ground on the bottom surface of the sole of the shoe is gradually compressed toward the front portion at the rear portion, and the slip is flat with the ground as shown in FIGS. 10 and 12. Due to the shape, the impact amount according to the landing of the sole bottom of the shoe is relatively reduced, and the soft sensor lower midsole 30 is contracted in parallel with the ground as shown in Figs. The effect is as if you were walking on the sand barefoot. An upper insertion protrusion 36 is formed on the upper portion of the lower midsole 30 of the sensor so that the lower insertion groove 25 of the upper midsole 20 can be inserted therein, and the lower middle midsole 30 of the soft sensing element is disposed at the lower portion thereof. The shoe sole of the present invention, which is composed of the upper midsole 20, which is coupled, shows the effect of walking on the sand, thereby reducing the impact hardness in half and double the buffering effect in case the soft sensor is not coupled. Increase over.

In the shoe sole of the present invention, the grounding area of the sole is wide when the heel touches the ground at the time of landing in the landing step, as shown in FIG. 10 and 14 are contracted in parallel with the ground as shown in Figs. 10 and 14, the buffering efficiency is high and the soft landing is made, the effect of feeling like walking on the sand barefoot appears, soft sensor lower midsole (30) ) Is combined with the upper midsole 20 has the effect of the feeling of walking on the sand appears because the soft sensor lower midsole (30) is not combined when the impact hardness is reduced by half and buffer effect Increase more than 2 times.

The upper midsole 20 of the present invention is coupled to the soft sensor lower midsole 30, so that the soft sensor lower midsole 30 is placed in parallel with the ground in the case of the landing of the shoe cushioning by shrinkage It is possible to increase the efficiency and feel like walking on the sand barefoot, and the soft sensor lower midsole 30 contracted during the landing and centering stage is restored in the detachment step as shown in Figures 11 and 13 It generates a repulsive force, thus improving walking efficiency.

In addition, the sole of the left and right sides of the present invention inclined upwardly when the walking operation is connected to the center moving step as shown in FIG. 15, the bottom of the shoe sole is compressed while the sensor lower midsole 30 is compressed as shown in FIGS. 10, 12, and 14. 10 and 12, since the part landing on the ground forms a flat slip shape with the ground, the impact amount according to the landing of the sole bottom of the shoe is relatively reduced, and the soft sensor lower midsole 30 is parallel to the ground. Since it is contracted in a posture, the cushioning efficiency is high and a soft landing is made, and the effect is that it feels like walking on the sand with bare feet, and the impact force is continuously dispersed and absorbed, and the soft sensor lower midsole 30 is located at the bottom. The combined upper midsole 20 has the effect of feeling the walking on the sand, so in case the soft sensor is not combined It reduces the impact hardness in half thereby increasing the buffering effect at least twice.

In addition, the left and right sides of the inclined shoe sole of the present invention as shown in Figs. 10, 12 and 14 as the lower body midsole 30 is compressed, the part landing on the ground from the bottom surface of the shoe sole 10 and 12 Since it forms a flat slip shape with the ground as shown in Fig. 12, the effect is that it feels like walking on the sand with bare feet, and a smooth and natural gait is achieved without a sudden impact on the ankle joint, legs, and each joint of the body.

The left and right sides of the present invention is inclined upwardly outsole is the bottom surface of the sole is out of the ground in the separation step as shown in FIG. Because it pushes the foot in the direction of progression, it feels like walking on the sand with bare feet. The walking efficiency is high, and the light and light walking is possible.

8, 9, 11 and 13, the main inclination angle of the left and right sides of the shoe that the left and right sides of the outsole 40 to the ground in the shoe sole of the present invention is 5 to 45 degrees, preferably 10 to 30 It is formed in the shape of a curved arc shape inclined upward and downward on both sides, and when the left and right major inclination angles are less than 5 degrees, the rolling action of both left and right sides is not made, and when the left and right major inclination angles are more than 45 degrees, the left and right inclinations are too urgent. When you are wearing or standing, you may have an unstable and unstable posture.

In the sole of the left and right sides of the present invention inclined in an arc shape, the heel of the upper midsole and the heel of the lower midsole are preferably inclined in an arc shape, and the inclination angle of the heel is preferably 5 to 45 degrees, and the angle of 25 to 35 degrees. Photo is most desirable.

In addition, in the shoe sole of the present invention, as shown in Figure 17, the sensor lower midsole 30 is combined with a waterproof coating layer 34 on both sides, the material of the waterproof coating layer 34 is ethylene vinyl acetate copolymer, polyol, polyester And because it is made of any one selected from polyurethane can be prevented from being damaged by the hydrolysis phenomenon of the lower sensor midsole 30 made of a soft.

In the shoe sole of the present invention, the upper midsole 20 is made of any one material selected from ethylene vinyl acetate copolymer, synthetic resin including polyester and polyurethane, or rubber including natural rubber, synthetic rubber, and foamed synthetic rubber. The hardness of the material (as measured by Japan ASKER TYPE C hardness tester: CELLULAR RUBBER & YARN PACKAGE DUROMETER HARDNESS hardness tester) is 40 ~ 90. In the sole of the present invention, when the hardness of the upper midsole 20 is less than 40, the softness of the midsole does not serve as a support, and when the hardness of the midsole is 90 or more, there is a problem in that the midsole does not function as an elastic body.

The shoe sole of the present invention is coupled to the lower sensor midsole 30 in the lower portion of the upper midsole 20 can increase the elasticity and resilience. In the shoe sole of the present invention, the sensor lower midsole 30 is made of any one material selected from ethylene vinyl acetate copolymer, synthetic resin including polyester and polyurethane, or rubber including natural rubber, synthetic rubber, and foamed synthetic rubber. The hardness of the material (as measured by the Japan ASKER TYPE C hardness tester: CELLULAR RUBBER & YARN PACKAGE DUROMETER HARDNESS hardness tester) is the same as the material hardness of the upper midsole 20 or the material hardness of the outsole 40 and the upper midsole 20. Compared to 5-50 smaller soft materials, preferably 10-30 smaller soft materials. In the present invention, when the hardness of the sensor lower midsole 30 is too soft compared to the material hardness of the outsole 40 and the upper midsole 20, the sensor is too soft so that the sensor does not function as a supporter. If the hardness is too hard compared to the material hardness of the outsole 40 and the upper midsole 20 there is a problem that the sensor does not act as an elastic body is too hard.

In the shoe sole in which both left and right sides of the present invention are inclined upward, the upper midsole is preferably provided with a front and rear shape shank 50 extending from the front part to the rear part. In the shoe sole of the present invention, the upper midsole 20 is formed in a plate shape, modeling the shape of the sole and the shape of the sole, and the front and rear shape shank 50 is built in the upper midsole 20, so that the bottom of the heel of the sole According to the shape of the heel and the motion trajectory of the heel relative to the ankle joint during walking, the surface is formed in a curved shape in the front and rear direction, and rolling motion is performed with respect to the ground during walking. The front and rear shape shank 50 embedded in the upper midsole 20 of the present invention preferably forms a plurality of slits 56 whose front part is opened to the front end at a predetermined position in front of the front, and the center waist portion for reinforcement. It is preferable that the rib 52 is formed in the front-back direction, and the bottom surface of the heel of the sole is formed in a curved shape in the front-back direction according to the shape of the heel and the motion trajectory of the heel with respect to the ankle joint during walking. Let the rolling motion take place.

In the shoe sole of the present invention, the front and rear shape shank 50 embedded in the upper midsole 20 preserves the original shape of the sole and the shoe, and the sole having a high frequency of bending and elongation at the time of walking is smooth in its original shape. In addition to improving the stability of walking while walking and to add a repulsive force in the departure step to promote a light gait. In the shoe sole of the present invention, the front and rear shape shanks 50 embedded in the upper midsole 20 are preferably formed in the form of a plate using a synthetic resin material. In the shoe sole of the present invention, the front and rear shape shank 50 embedded in the upper midsole 20 is formed with a through hole 54, which is formed to smoothly flow the molding liquid during the manufacture of the midsole. .

When the left and right sides of the present invention have a weak supporting force in the sole of the inclined shoe sole, the waist-shaped shank 60 is preferably mounted at the center of the upper midsole 20. In the present invention, the waist-shaped shank 60 embedded in the upper midsole 20 is preferably formed in the front and rear ribs 52 for reinforcement in the central waist portion, and formed in a plate shape using a synthetic resin material. It is preferable. In the shoe sole of the present invention, the front and rear shape shanks 50 embedded in the upper midsole 20 are formed with through holes 54, which are formed to smoothly flow the molding liquid in the manufacture of the midsole.

In the left and right sides of the present invention, when the support for supporting the sole in the inclined shoe sole is weak, it is preferable to mount the hard midsole shank 70. In the present invention, the hard midsole shank 70 is the inside of the upper midsole 20; It is preferable to install at any one position selected between the upper midsole 20 and the insole 10 and the lower portion of the upper midsole. In addition, in the present invention, the hard midsole shank 70 is preferably installed integrally with the insole instead of the insole 10.

When the left and right sides of the present invention have a weak supportive force supporting the sole in the inclined shoe sole, the waist-shaped shank 60 is built in the center of the upper midsole 20, and the hard midsole shank 70 is formed by the upper midsole ( 20) inside; It is preferable to install at any one position selected between the upper midsole 20 and the insole 10 and the lower portion of the upper midsole, or to be installed integrally with the insole instead of the insole 10.

Insole 10 in the shoe sole of the present invention is mounted on the upper portion of the upper midsole 20, the shape of the sole is elastic and firmly maintained so that the stability of walking is high and the repulsive force is added by the restoring force at the step of leaving Light walking is achieved and walking efficiency is high.

Outsole 40 in the shoe sole of the present invention is coupled to the lower portion of the lower body midsole 30, the bottom surface of the left and right both sides as shown in Figures 8, 9, 11 and 13 from the left to the right It is formed in the shape of an arc-shaped curved surface that is convex in the direction, and is formed in the form of inclined both sides. Outsole 40 in the sole of the present invention is made of synthetic resin or rubber, preferably natural rubber, including polyester and polyurethane.

In the sole of the present invention, the outsole 40 has a hardness of 5 to 50 compared to the material hardness of the sensor lower midsole 30 as measured by the hardness of the material (as measured by a Japanese ASKER TYPE C hardness tester: CELLULAR RUBBER & YARN PACKAGE DUROMETER HARDNESS hardness tester). It is made of a larger hard material, preferably 10-30 larger hard material. In the present invention, when the hardness of the outsole 40 is too soft compared to the material hardness of the sensor lower midsole 30, it is too soft to serve as an outsole support, and the hardness of the outsole 40 is lower than that of the sensor lower midsole 30. If the hardness is too hard compared to the hardness of the material there is a problem that the outsole itself does not act as an elastic body.

1 is an exploded side view showing a shoe sole of the present invention.

2 is a side view showing a shoe sole of the present invention.

Figure 3 is a plan view showing a portion removed from the upper of the shoe sole of the present invention.

Figure 4 is an exploded cross-sectional view showing a state cut in the foot arch in the direction A-A 'in FIG.

Figure 5 is a cross-sectional view showing a state cut in the foot arch in the direction A-A 'in FIG.

Figure 6 is a cross-sectional view showing a state in which the inside of the foot arch in close contact in the state cut in the foot arch in the direction A-A 'in FIG.

Figure 7 is a cross-sectional view showing a state cut in the direction B-B 'in FIG. Figure 8 is an exploded cross-sectional view showing a state in which the left and right sides are inclined upwardly in the direction C-C 'or D-D' in FIG.

9 is a cross-sectional view showing a state in which the left and right sides inclined upward in the direction C-C 'or D-D' in FIG.

FIG. 10 is an exploded cross-sectional view illustrating a landing state in which the sole is slipped while the central portion is compressed at the moment when the left and right sides cut in the C-C 'or D-D' direction are inclined upward;

Figure 11 is a cross-sectional view showing a state in which the left and right both sides cut in the direction C-C 'or D-D' in FIG.

12 is a rear view showing a landing state in which the sole bottom is slipped while the center portion is compressed at the moment when the left and right sides are inclined upward in the shoe sole of the present invention.

Figure 13 is a rear view showing a state in which the left and right sides inclined upward in the sole of the present invention in a state in which the left and right sides are relaxed in an upwardly inclined state at the moment of departure from the landing.

Figure 14 is a side view showing a landing state at the moment the landing of the heel inclined to the upper left and right sides in the sole of the present invention.

Figure 15 is a side view showing a landing state of the instant when the sole portion of the shoe sole landing of the present invention.

Figure 16 is a side view showing a landing state of the instant when the heel portion of the shoe sole landing of the present invention.

17 is a side view showing that the waterproof coating layer 34 is coupled to both sides of the sensor lower midsole in the shoe sole of the present invention.

18 is a plan view showing a front and rear shape shank built into the shoe sole of the present invention.

19 to 24 is a plan view showing a waist-shaped shank embedded in the sole of the present invention.

Figure 25 is a side view showing the waist-shaped shank built into the shoe sole of the present invention.

Figure 26 is a plan view showing a hard midsole shank embedded in a shoe sole of the present invention.

Figure 27 is a bottom view showing a hard midsole shank embedded in a shoe sole of the present invention.

Figure 28 is a side view showing a hard midsole shank embedded in a shoe sole of the present invention.

** Explanation of symbols for the main parts of the drawings

10: insole 12: foot arch inner joint

14: Outer foot 20: Upper midsole

21: edge 22: inside of the foot

23: upper midsole upper surface 25: lower insertion groove

      29: adhesive insertion groove 30: sensor lower midsole

32: left and right inclination rear portion 36: upper insertion protrusion

40: Outsole 42: Rear left and right slopes

50: front and rear shape shank 52: rib

54: through hole 56: slit

60: waist shape shank 62: rib

64: through hole 66: slit

70: hard midsole shank 80: upper

100: foot

Claims (1)

In the manufacturing method of a shoe sole made of a midsole and an outsole coupled to a lower part of the upper, the manufacturing method of the shoe sole is made of any one material selected from synthetic resin and rubber, and the hardness of the material (Japan ASKER TYPE C hardness tester: CELLULAR RUBBER & YARN PACKAGE DUROMETER HARDNESS measured by hardness tester) is made of 40 ~ 90 material, and at the front of the bottom of the upper midsole so that the upper inserting projection 36 of the lower midsole 30 can be inserted. An upper midsole having a lower insertion groove 25 formed inside the edge 21 over the rear portion and having a hard midsole shank 70 mounted from the front portion to the rear portion at an upper position of the upper midsole 20 ( 20) manufacturing the process; It is composed of any one material selected from synthetic resin and rubber, and the hardness of the material (as measured by Japan ASKER TYPE C hardness tester: CELLULAR RUBBER & YARN PACKAGE DUROMETER HARDNESS hardness tester) is 5 to 50 compared to the material hardness of the upper midsole 20. It is made of a smaller soft material, and the upper insertion protrusion 36 is formed on the upper part so that it can be inserted into the lower insertion groove 25 of the upper midsole 20, and the bottom surface is left from the front part to the rear part. Forming a convex arc shape in the lower direction over the right side in the step of producing a sensor lower midsole 30 inclined in both sides of the arc shape; A process of manufacturing the outsole 40 in which the bottom surface is formed in a convex shape in which the bottom surface is convex in the downward direction from the left side to the right side in the front portion; And combining the outsole 40 to the lower part of the sensor lower midsole 30 after combining the sensor lower midsole 30 to the lower portion of the upper midsole 20. Method of manufacturing a shoe sole inclined to an arc shape.

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