KR102024770B1 - Bottom of shoe having trampoline structure and shoe having the same - Google Patents

Abstract

Disclosed are a bottom of a shoe having a trampoline structure and the shoe comprising the same. The bottom of the shoe having the trampoline structure, in a process that a deformation cell is compressed and deformed in an insertion groove to absorb a ground reaction force, is characterized to have a body which absorbs the ground reaction force by bending deformation in conjunction with compression deformation of the deformation cell, and a reinforcement resists bending deformation of the body to induce compression deformation of the body. According to the present invention, it is possible to provide: the bottom of the shoe having the trampoline structure that forms a simple structure while efficiently dispersing and absorbing the impact of the ground, while allowing flexible bending of the bottom of the shoe as a foot is bent while walking, and thus improving ground adaptability and grip force; and the shoe comprising the same.

Description

Shoe sole having a trampoline structure and a shoe comprising the same {BOTTOM OF SHOE HAVING TRAMPOLINE STRUCTURE AND SHOE HAVING THE SAME}

The present invention relates to a shoe sole having a trampoline structure and a shoe including the same, and more particularly, to form a simple structure while efficiently absorbing and absorbing the impact of the ground, while flexing the sole according to the bending of the foot during walking. The present invention relates to a shoe sole having a trampoline structure capable of improving the ground adaptability and the grounding force and a shoe including the same.

With the development of scientific civilization, shoes have far more functions and roles to play than they did without shoes, and more than simply did it to protect their feet.

In other words, the shoe is not just a function of protection, but with the development of science, its function is becoming more diversified and advanced. This has many benefits, but as shoes perform most of their functions and roles, their feet have become weaker and softer, and now they have to suffer from standing on the ground, such as dirt, asphalt, or cement, unless they wear them. Now you should say that shoes are part of the body, not tools.

Recently, as walking movements are subdivided into walking, running, and trekking, demand for multi-purpose functional sneakers equipped with functional elements such as safe midsole design, cushioning, grip, and wearing comfort is increasing instead of general sneakers.

In this regard, Republic of Korea Patent Publication No. 1067892 discloses a multi-shock absorbing shoe sole due to different hardness. Korean Patent No. 1067892 includes an insole, a midsole formed under the insole, and having a receiving space from the arch portion of the foot to the heel at the lower portion; A shank portion coupled to the receiving space portion of the midsole and formed at a relatively high hardness compared to the midsole, and formed to bend downward to lift the heel upwards to provide elastic restoring force; A hill sponge portion coupled to the lower side of the shank portion of the midsole and formed at a lower hardness than the midsole and formed at the heel portion of the foot; An outsole coupled to the lower side of the hill sponge portion is configured to include, characterized in that the shock absorbing multiple by the shank portion and the hill sponge portion formed between the midsole and the outsole when grounded to the ground.

Patent No. 1067892 shows that the sole of a shoe is formed with different hardness to completely absorb an impact amount from the ground when grounding, thereby protecting the ankle joint or knee joint, and the shank portion formed at high hardness and the hill sponge formed at low hardness. By this, the impact absorption and dispersion in the heel area that is most impacted at the time of grounding is made to be multiple, thereby minimizing the impact amount at the heel area, saving material, and providing a lightweight shoe sole.

However, since the Patent Publication No. 1067892 forms a structure that absorbs the ground reaction force applied from the ground while the hill sponge portion is compressed in the vertical direction, there is a disadvantage that the thickness of the hill sponge portion must be increased to sufficiently absorb the ground reaction force.

And Republic of Korea Patent Publication No. 1089139 discloses a shoe sole. Korean Patent No. 1089139 discloses an outsole; A rear chamber and a front chamber are formed on the lower surface joined with the outsole except for the rim, and the rear chamber and the front chamber are connected by a bottleneck, and a plurality of supports are joined to the outsole inside the rear chamber and the front chamber. A first midsole is formed, the first midsole is connected between the support pillar and the upper end of the support pillar and the rim convex bridge; The hardness is lower than that of the first midsole, and is inserted in the form surrounded by the upper edge surface of the first midsole, and the groove and the protrusion corresponding to the top shape of the first midsole are formed on the lower surface so as to be in close contact with the top surface of the first midsole. It is characterized in that it comprises a;

Patent No. 1089139 discloses that the first midsole and the second midsole having different hardness are combined, and the front chamber and the rear chamber are formed at the center of the first midsole, thereby reducing the shaking during walking, thereby enabling more stable walking. There is an advantage.

However, Patent Publication No. 1089139 discloses a minute crack in the midsole or outsole due to the ground reaction force applied continuously to the sole, and the air in the front chamber and the rear chamber is discharged to the outside through the crack, so that the shock absorbing power is easily lost. There was a problem.

In addition, the Republic of Korea Patent Publication No. 1047352 discloses a shoe sole reinforced shock absorption and resilience. Patent No. 1047352 allows the load supporting portions to be arranged at regular intervals along a position corresponding to the center portion of the sole, while a total of four distributed ground portions are radially distributed over both sides of the sole based on one load supporting portion. The two cushion members of such a shape are staggered in a zigzag manner along the up and down directions to provide hexagonal buffer spaces between the cushion members.

Patent No. 1047352 allows the buffer space to gradually decrease from the heel to the toe, so that the weight of the wearer is evenly distributed throughout the sole by the load supporting portion and the distributed grounding portion, thereby maximizing the shock absorption, The cushioning space increases the resilient elasticity that is compressed and restored along the wearer's walking path, enabling propelled walking of the cloud, and allowing the wearer to perform more comfortable, natural and efficient cloud walking. There is an advantage in reducing the joint and ankle and knee joint safety.

However, Patent Publication No. 1047352, because the two cushion members must be arranged in a staggered staggered manner along the up and down direction, the manufacturing process is complicated, and foreign matters such as snow, soil, gravel, etc. between the two cushion members are easily caught between mountain roads. And, in the state of foreign matter was worn there was a problem that the sole does not exhibit sufficient cushioning.

Republic of Korea Patent Publication No. 1067892 (Registration date: September 20, 2011) Republic of Korea Patent Publication No. 1089139 (Registration Date: 2011.11.28) Republic of Korea Patent Publication No. 1047352 (Registration Date: 2011.07.01)

An object of the present invention, while forming a simple structure, while efficiently absorbing the shock of the ground, while the foot is bent when the foot is flexible, the sole of the shoe having a trampoline structure is made to improve the adaptability and grounding force And to provide a shoe comprising the same.

The object is, according to the present invention, a sole bottom, wherein the sole surface forms a rigid contact surface and a flexible contact surface, wherein the rigid contact surface is provided at an edge of the bottom surface, and the flexible contact surface is surrounded by the rigid contact surface. A midsole forming the rigid contact surface and having an insertion groove formed therein; And an outsole having a lower hardness than the midsole and being inserted into the insertion groove to form the flexible contact surface, wherein the rigid contact surface surrounds a front end portion and a rear end portion of the flexible contact surface, respectively. ; And a pair of basic contact surfaces connecting the reinforcing contact surfaces, respectively, wherein the midsole includes: a body having a higher stepped surface than the basic contact surface and the basic contact surface and having an upper coupled thereto; And a reinforcement having a higher hardness than the body and coupled to the step surface to form the reinforcing contact surface, wherein the outsole includes: a bonding pad forming a continuous bonding surface with the midsole; And a plurality of deformation cells protruding in a direction facing the ground reaction force from the bonding pads. In the process of absorbing the ground reaction force while the deformation cell is compressively deformed in the insertion groove, the body compresses the deformation cell. Absorption of ground reaction force by bending deformation in conjunction with deformation, the reinforcement is achieved by a shoe sole having a trampoline structure, which induces compressive deformation of the body to resist bending deformation of the body.

The rigid contact surface further includes an enlarged contact surface formed in the body and interposed between the reinforcement contact surface and the basic contact surface and the flexible contact surface, wherein the body has a separation groove between the reinforcement contact surface and the basic contact surface and the enlarged contact surface. It can be made to be formed.

In the flexible contact surface, a spaced area in contact with the ground is formed in the process of increasing the ground reaction force applied to the enlarged contact surface, and in a position in contact with the spaced space so that the bending deformation of the body at the position in contact with the spaced space is suppressed. It may be made to reduce the depth of the separation groove.

The deformation cell forms a hexagonal column shape in which the cross-sectional area decreases toward the load direction, and the flexible contact surface forms a bottom surface of the deformation cell, the surface contact surface perpendicular to the direction of action of the ground reaction force; And an inclined contact surface which forms a side surface of the deformation cell and is in close contact with the ground when the deformation cell is deformed.

The deformation cell may have a columnar shape in which the cross-sectional area decreases toward the load direction, and the flexible contact surface may include a bottom surface of the deformation cell, the surface contact surface perpendicular to the direction of action of the ground reaction force; An inclined contact surface which forms a side surface of the deformation cell and is in close contact with the ground when the deformation cell is deformed; And a plurality of stepped contact surfaces connecting the surface contact surface and the inclined contact surface in a stepped manner.

In addition, the object, according to the invention, the shoe sole; And an upper coupled to the sole of the shoe.

According to the present invention, in the process of absorbing the ground reaction while the deformation cell is compressively deformed in the insertion groove, the body absorbs the ground reaction while bending deformation in conjunction with the compression deformation of the outsole, the reinforcement resists the bending deformation of the body By inducing the compression deformation of the body, while absorbing the impact of the ground efficiently while forming a simple structure, the flexible bend of the sole is possible according to the bending of the foot during walking, and the trampoline structure is made to improve the ground adaptability and grounding force It is possible to provide a shoe sole having and a shoe comprising the same.

1 and 2 are a perspective view of a shoe sole having a trampoline structure according to an embodiment of the present invention.
Figure 3 is an exploded perspective view of the shoe sole having a trampoline structure of Figure 1;
4 is a bottom view and a plan view of a shoe sole having the trampoline structure of FIG.
Figure 5 (a) is a cross-sectional view AA of the shoe sole having a trampoline structure of Figure 4 (a).
Figure 5 (b) is a side view of a shoe sole having a trampoline structure of Figure 1;
Figure 6 (a) is a BB cross-sectional view of the shoe sole having a trampoline structure of Figure 4 (a).
Figure 6 (b) is a cross-sectional view of the shoe sole having a trampoline structure of Figure 4 (a).
Figure 7 (a) is a cross-sectional view of the shoe sole having a trampoline structure of Figure 4 (a).
Figure 7 (b) is a cross-sectional view of the shoe EE having a trampoline structure of Figure 4 (a).
8 is a bottom view and a plan view of a shoe sole having a trampoline structure according to another embodiment of the present invention.
Figure 9 (a) is a cross-sectional view AA of the shoe sole having a trampoline structure of Figure 8 (a).
Figure 9 (b) is a side view of the shoe sole having the trampoline structure of Figure 8;
Figure 10 (a) is a BB cross-sectional view of the shoe sole having a trampoline structure of Figure 8 (a).
Figure 10 (b) is a cross-sectional view of the shoe sole having a trampoline structure of Figure 8 (a).
Figure 11 (a) is a cross-sectional view of the shoe sole having a trampoline structure of Figure 8 (a).
Figure 11 (b) is a cross-sectional view of the shoe sole having a trampoline structure of Figure 8 (a).

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted to clarify the gist of the present invention.

Shoe sole having a trampoline structure of the present invention and a shoe including the same, while efficiently absorbing the impact of the ground while forming a simple structure, the flexible bend of the sole is possible according to the bending of the foot during walking, ground adaptability and grounding force This is done to improve.

1 and 2 are perspective views of a shoe sole having a trampoline structure according to an embodiment of the present invention, Figure 3 is an exploded perspective view of the shoe sole having a trampoline structure of Figure 1, Figure 4 is a trampoline structure of Figure 1 Figure 5 (a) is a cross-sectional view of the shoe sole having a trampoline structure of Figure 4 (a), Figure 5 (b) is a side view of the shoe sole having a trampoline structure of Figure 1 6 (a) is a cross-sectional view BB of the shoe sole having the trampoline structure of Figure 4 (a), Figure 6 (b) is a cross-sectional view of the CC of the shoe sole having a trampoline structure of Figure 4 (a), Figure 7 (a) is DD sectional drawing of the shoe sole which has the trampoline structure of FIG. 4 (a), and FIG. 7 (b) is EE sectional drawing of the shoe sole which has the trampoline structure of FIG.

As shown in FIG. 3, the shoe sole 10 having the trampoline structure of the present invention constitutes the shoe 1 together with the upper 2. The shoe 1 described above may include functional shoes and functional sneakers.

The trampoline structure formed by the shoe sole 10 of the present invention forms a structure that efficiently absorbs ground reaction force when walking on a relatively flat unpaved road such as a light trail or an ole road as well as a flat ground such as an asphalt road. .

Therefore, the trampoline structure formed by the shoe sole 10 of the present invention can be mainly applied to functional walking shoes or functional trekking shoes. In one embodiment of the invention the shoe 1 is shown as a functional trekking shoe, and in another embodiment of the invention the shoe 1 is shown as a functional walking shoe.

The above-mentioned ground reaction force means a reaction force against the force exerted on the earth by the object. That is, the ground reaction force means the force (kinetic energy) and the same magnitude and opposite direction to the force transmitted from the shoe sole 10 to the ground during walking.

As shown in Figures 1 to 3, the shoe sole 10 having a trampoline structure according to an embodiment of the present invention, while absorbing the impact of the ground efficiently while forming a simple structure, while walking and trekking As the foot is bent, the flexible bend of the sole is possible, and the ground adaptation force and the grounding force are improved, and the midsole 100 and the outsole 200 are configured to include the same.

Shoe sole 10 having a trampoline structure of the present invention, by forming a shock absorbing structure improved than the conventional shoe sole by the coupling structure of the midsole 100 and the outsole 200 and their hardness (hardness), the Achieve your purpose.

The midsole 100 and the outsole 200 should be understood to be made of a synthetic resin material or rubber material that satisfies the bonding structure and hardness conditions to be described later. That is, the midsole 100 and the outsole 200 may be made of various elastomers, various copolymers, various synthetic rubbers, and the like.

1 to 4, the midsole 100 is a configuration that absorbs the ground reaction force through the elastic deformation, and comprises a body 110 and a reinforcement (120). Hereinafter, for the sake of easy understanding of the present invention, the left side is referred to as the front side of the shoe 1 and the right side as the rear side of the shoe 1.

Hereinafter, 'bottom surface' means the bottom surface of the shoe sole 10 in contact with the ground. In the shoe sole 10 of the present invention, the midsole 100 and the outsole 200 absorb the ground reaction force by compressive deformation or bending deformation according to the magnitude and direction of the ground reaction force. Therefore, the above-described bottom surface should be understood as the shape and area of the floor change every time the ground is touched by the amount of elastic deformation of the midsole 100 and the outsole 200 during walking.

As shown in Figure 2 and 4 (a), the shoe sole 10 of the present invention, the bottom surface forms the ground, the rigid contact surface (F1) and the flexible contact surface (F2).

The rigid contact surface F1 is a contact surface formed by the midsole 100 with the ground, and is provided at the edge of the bottom surface. The flexible contact surface F2 is a contact surface formed by the outsole 200 with the ground, and forms a shape surrounded by the rigid contact surface F1. The rigid contact surface F1 comprises a basic contact surface F1A and a reinforcement contact surface F1B.

As shown in FIG. 5, the body 110 is configured to absorb ground reaction force through compression and bending deformation, and forms a shape in which the front and rear bottoms are inclined upwardly as in the midsole structure of a general trekking or walking shoe. .

As shown in Figure 5 (a), the body 110 forms a form in which the thickness slightly increases from the front to the rear. The body 110 of the present invention can absorb a greater ground reaction force while forming a smaller thickness than the midsole disclosed in Korean Patent No. 1067892. Detailed description thereof will be described later.

As shown in Figure 1, the upper surface of the body 110 forms a curved surface (hereinafter referred to as 'sitting surface') of the sole shape. The sole (or insole) is seated on the seating surface. And the edge of the seating surface forms a gentle slope upwards. As shown in Figure 5 (a), the upper (2) is coupled to the top of the body (110).

As shown in FIG. 3, an insertion groove 111 and a stepped surface 112 are formed at the bottom of the body 110.

As shown in Figures 2 and 3, the insertion groove 111 is a portion in which the outsole 200 is inserted, is formed inside the edge of the bottom of the body (110). The stepped surface 112 is a portion to which the reinforcement 120 is coupled, and is formed at the front and rear edges of the body 110, respectively.

The reinforcement body 120 is configured to induce compressive deformation of the body 110 by resisting bending deformation of the body 110. The reinforcement body 120 is coupled to the step surface 112 to surround the front and rear ends of the outsole 200, respectively. Form a wrapping form.

The reinforcement body 120 is formed of a material having a higher hardness than the body 110. The hardness of the reinforcement 120 is 55, and the body 110 has a lower hardness than the reinforcement 120. Exceptionally, the body 110 may be formed with the same hardness 55 as the reinforcement 120.

The hardness may be measured by Vickers hardness test, Brinell hardness test, Knoop hardess test, Janka hardness test, Meyer hardness test, Rockwell hardness test, Shore hardness test, and Barcol hardness test.

As shown in Figure 2 to 4 (a), the bottom surface of the reinforcement body 120 forms a reinforcing contact surface (F1B), the bottom surface of the body 110 forms a basic contact surface (F1A). That is, the bottom surface of the body 110 and the bottom surface of the reinforcement body 120 together form a rigid contact surface (F1).

The reinforcing contact surface F1B is a contact surface that the reinforcing body 120 forms with the ground, and is formed at the front and rear edges of the body 110, respectively. The basic contact surface F1A is a contact surface formed by the body 110 with the ground, and forms a form in which the reinforcing contact surfaces F1B are respectively connected at both sides of the outsole 200.

As shown in FIG. 3, the stepped surface 112 is formed at a position higher from the ground than the basic contact surface F1A. As shown in FIG. 5 (b), when the reinforcement body 120 is coupled to the stepped surface 112, the base contact surface F1A and the reinforcement contact surface F1B are continuous bottom surfaces in the longitudinal direction of the shoe 1. To form.

As shown in Figures 2 to 4, the outsole 200 is a configuration that absorbs the ground reaction force through the elastic deformation, it comprises a bonding pad 210 and the deformation cell 220.

As shown in Figure 3 and 5 (a), the bonding pad 210 is formed to form a continuous bonding surface with the body 110 inside the insertion groove 111, it is formed literally in the form of a pad. Bonding pad 210 forms a continuous bonding surface with the body 110 in the insertion groove 111 to absorb the ground reaction while bending or unfolding integrally with the midsole 100 during walking.

The deformation cell 220 is configured to form a flexible contact surface F2 on the surface thereof, and protrudes from the bonding pad 210 in a direction facing the ground reaction force. The deformable cells 220 are provided in plural, and form a pillar shape in which the cross-sectional area decreases toward the load direction, respectively. In FIG. 4A, each of the modified cells 220 is illustrated in a substantially '<' shape, but may have various shapes.

5 to 7, the flexible contact surface F2 is a contact surface formed by the deformation cell 220 with the ground, and includes a surface contact surface F2A, an inclined contact surface F2B, and a stepped contact surface F2C. It is composed.

As described above, the deformation cell 220 forms a flexible contact surface F2 on the surface thereof. That is, the bottom surface of the deformation cell 220 forms a surface contact surface F2A, the side surface of the deformation cell 220 forms an inclined contact surface F2B, and a stepped contact surface is formed between the bottom surface and the side surface of the deformation cell 220. F2C).

As shown in FIGS. 6 and 7, the surface contact surface F2A is a bottom surface of the deformation cell 220 perpendicular to the direction of action of the ground reaction force, and the inclined contact surface F2B when the shoe sole 10 treads the ground. It contacts the ground earlier than the step contact surface F2C.

The inclined contact surface F2B is an inclined side surface of the deformation cell 220, and is in close contact with the ground during compression and bending deformation of the deformation cell 220. Also, the inclined contact surface F2B may be in close contact with the ground by protruding portions of the ground into the surface contact surface F2A.

The step contact surface F2C is a portion connecting the surface contact surface F2A and the inclined contact surface F2B in a stepped manner, and refers to a plurality of step portions formed between the surface contact surface F2A and the inclined contact surface F2B. The stepped contact surface F2C may be in close contact with the ground before the inclined contact surface F2B during compression and bending deformation of the deformation cell 220.

As described above, each of the plurality of deformation cells 220 forms a plurality of three-dimensional contact surfaces, that is, a surface contact surface F2A, an inclined contact surface F2B, and a stepped contact surface F2C on its surface. Therefore, each deformable cell 220 is compressed and flexurally deformed at different shapes and angles according to the curved shape of the ground to form a wide bottom surface to absorb ground reaction force.

The outsole 200 is formed of a material having a lower hardness than the body 110. The hardness of the outsole 200 is 45, and the body 110 has a higher hardness than the outsole 200.

As shown in FIG. 4 (a), the pair of reinforcing contact surfaces F1B are arranged to surround the front and rear ends of the flexible contact surface F2, respectively, and the pair of basic contact surfaces F1A are the flexible contact surfaces. Forms of connecting the reinforcing contact surfaces (F1B) on both sides of (F2), respectively.

6 and 7 illustrate a state in which the bottom surface of the shoe sole 10 is in contact with the ground. 6 (a) is a sectional view taken along line BB of FIG. 4 (a), FIG. 6 (b) is a sectional view taken along line CC of FIG. 4 (a), and FIG. 7 (a) is a sectional view taken along line DD of FIG. (b) is EE sectional drawing of FIG.

When walking, the shoe sole 10 starts from the heel and evenly reaches the entire sole of the sole. When walking, the sole 10 falls from the ground after the front bottom reaches the floor by the rotation of the legs and ankles, starting with the rear bottom.

That is, in the shoe sole 10 having a trampoline structure according to an embodiment of the present invention, the reinforcing contact surface F1B at the rear of the shoe 1 first touches the ground when walking, and then the flexible contact surface together with the reinforcing contact surface F1B. (F2) touches the ground (see FIG. 7 (b)), and then the flexible contact surface F2 touches with the basic contact surface F1A (see FIG. 7 (a)), then FIG. 7 (b) and FIG. In the order of (a), the reinforcing contact surface F1B and the flexible contact surface F2 on the front of the shoe 1 touch the ground.

6 and 7 denotes the foot of the wearer, P denotes a force (kinetic energy) applied to the bottom surface by the foot when walking, and R1 denotes a flexible contact surface (from the ground) F2) means the ground reaction force applied to, and the reference numeral R2 means the ground reaction force applied to both rigid contact surface (F1) from the ground, and the reference numeral M means a moment formed in the midsole (100).

As described above, the body 110 has a higher hardness than the outsole 200. Therefore, even if P is applied to the shoe sole 10 on the flexible contact surface F2, the sum of R2 is larger than R1.

The body 110 supports P while flexurally deforming by moments M by P and R1 and R2. At this time, the outsole 200 absorbs the ground reaction force R1 while compressing the deformation in the insertion groove 111. That is, in the process of absorbing the ground reaction force R1 while the outsole 200 is compressively deformed in the insertion groove 111, the midsole 100 supports P from the ground and in conjunction with the compression deformation of the outsole 200. It flexes and deforms and absorbs ground reaction force (R2).

At this time, the reinforcement body 120 formed of a material having a higher hardness than the body 110 induces a compressive deformation of the body 110 to resist bending deformation of the body 110. That is, the body 110 increases the compressive deformation in the load direction (ground reaction force direction) instead of reducing the bending deformation due to the restraining force of the reinforcing body (120).

Since the outsole 200 has a lower hardness than the midsole 100, the outsole 200 deforms according to various bendings of the ground, thereby forming a wide contact surface with the ground. In this case, compression and bending deformation may simultaneously occur in the plurality of deformation cells 220.

The shock absorption due to the interlocking elastic deformation of the midsole 100 and the outsole 200 forms the same mechanism as the shock absorption of the trampoline. A trampoline is a mechanism consisting of a resilient mesh with a spring connected to it, which comprises a frame, a safety plate, a mesh and a spring.

The frame refers to a metal body on which the spring is connected to support the net, and a mat with a cushion wrapped around the frame to prevent injury to the safety pad gymnast. The frame is supported from the ground by a leg, a metal structure.

A bed is a fabric usually made of nylon. Gymnasts jump on the net and perform free acting, such as aerial acrobatics. A spring is an elastic metal coil that gives elasticity to the mesh. There are usually 120 springs in the trampoline.

That is, in the shoe sole 10 having a trampoline structure of the present invention, the outsole 200 directly acts as a net to which the kinetic energy of the gymnast is applied, and directly absorbs the ground reaction force while deforming according to the ground curvature. The body 110 acts as a spring to absorb the kinetic energy of the mesh by its elastic deformation to absorb the ground reaction force by the bending deformation in conjunction with the compression deformation of the outsole 200, the reinforcement body 120 is The spring is connected to act as a frame (bearing) for supporting the mesh to suppress excessive bending deformation of the body (110).

Therefore, the shoe sole 10 having the trampoline structure of the present invention can absorb a greater impact even if it forms a thinner thickness than the sole of the shoe of Patent No. 1067892.

FIG. 8 is a bottom view and a plan view of a shoe sole having a trampoline structure according to another embodiment of the present invention. FIG. 9 (a) is a cross-sectional view of the shoe sole having the trampoline structure of FIG. 8 (a), and FIG. b) is a side view of the sole of the shoe having the trampoline structure of FIG. 8, FIG. 10 (a) is a cross-sectional view of the sole of the shoe having the trampoline structure of FIG. 8 (a), and FIG. 10 (b) is of FIG. CC sectional view of the shoe sole having a trampoline structure of Fig. 11 (a) is a DD sectional view of the shoe sole having a trampoline structure of Figure 8 (a), Figure 11 (b) is a trampoline structure of Figure 8 (a) It is EE sectional drawing of the sole of shoes having.

As illustrated in FIGS. 8 to 11, the shoe sole 20 having a trampoline structure according to another embodiment of the present invention includes a midsole 100 and an outsole 200. Hereinafter, the same configuration as in the embodiment will be briefly described for easy understanding of another embodiment of the present invention.

The midsole 100 and the outsole 200 should be understood to be made of a synthetic resin material or rubber material that satisfies the bonding structure and hardness conditions to be described later. That is, the midsole 100 and the outsole 200 may be made of various elastomers, various copolymers, various synthetic rubbers, and the like.

As shown in FIG. 8 and FIG. 9, the midsole 100 is a configuration for absorbing ground reaction force through elastic deformation, and includes a body 110 and a reinforcement body 120. Hereinafter, for the sake of easy understanding of the present invention, the left side is referred to as the front side of the shoe 1 and the right side as the rear side of the shoe 1 based on FIG. 8.

As shown in Figure 8 (a), the shoe sole 20 of the present invention, the bottom surface forms the ground, the rigid contact surface (F1) and the flexible contact surface (F2).

The rigid contact surface F1 is a contact surface formed by the midsole 100 with the ground, and is provided at the edge of the bottom surface. The flexible contact surface F2 is a contact surface formed by the outsole 200 with the ground, and forms a shape surrounded by the rigid contact surface F1. The rigid contact surface F1 comprises a basic contact surface F1A, a reinforcement contact surface F1B, and an enlarged contact surface F1C.

As shown in Figure 9, the body 110 is a configuration that absorbs the ground reaction force through the compression and bending deformation, as in the midsole structure of the general trekking or walking shoes, the front and rear bottom forms an inclined upward obliquely. . The upper 2 is coupled to the top of the body 110.

As shown in Figure 9 (a), the body 110 forms a form in which the thickness slightly increases from the front to the rear. The body 110 of the present invention can absorb a greater ground reaction force while forming a smaller thickness than the midsole disclosed in Korean Patent No. 1067892. Detailed description thereof will be described later.

Although not shown, an insertion groove 111 and a stepped surface 112 are formed at the bottom of the body 110 (see FIGS. 2 and 3).

The insertion groove 111 is a portion into which the outsole 200 is inserted and coupled, and is formed inside the edge of the bottom of the body 110. The stepped surface 112 is a portion to which the reinforcement 120 is coupled, and is formed at the front and rear edges of the body 110, respectively.

The reinforcement body 120 is configured to induce compressive deformation of the body 110 by resisting bending deformation of the body 110. The reinforcement body 120 is coupled to the step surface 112 to surround the front and rear ends of the outsole 200, respectively. Form a wrapping form.

The reinforcement body 120 is formed of a material having a higher hardness than the body 110. The hardness of the reinforcement 120 is 55, and the body 110 has a lower hardness than the reinforcement 120. Exceptionally, the body 110 may be formed with the same hardness 55 as the reinforcement 120.

As shown in FIG. 8A, the bottom surface of the reinforcement body 120 forms a reinforcing contact surface F1B, and the bottom surface of the body 110 forms a basic contact surface F1A and an enlarged contact surface F1C. do. That is, the bottom surface of the body 110 and the bottom surface of the reinforcement body 120 together form a rigid contact surface (F1).

The reinforcing contact surface F1B is a contact surface that the reinforcing body 120 forms with the ground, and is formed at the front and rear edges of the body 110, respectively. The basic contact surface F1A is a contact surface formed by the body 110 with the ground, and forms a form in which the reinforcing contact surfaces F1B are respectively connected at both sides of the outsole 200.

The enlarged contact surface F1C is also a contact surface formed by the body 110 with the ground, and is interposed between the flexible contact surface F2, the reinforcing contact surface F1B, and the basic contact surface F1A. That is, the enlarged contact surface F1C forms a shape surrounding the flexible contact surface F2.

Although not shown in detail, the stepped surface 112 is formed at a position higher from the ground than the basic contact surface F1A. When the reinforcement body 120 is coupled to the stepped surface 112, as shown in FIG. 9B, the basic contact surface F1A, the reinforcement contact surface F1B, and the enlarged contact surface F1C are the length of the shoe 1. To form a continuous bottom surface.

The body 110 is provided with a separation groove H between the enlarged contact surface F1C, the reinforcement contact surface F1B, and the basic contact surface F1A. When the separation groove H is formed, the body 110 has a greater amount of bending deformation at the upper side of the enlarged contact surface F1C than the upper side of the reinforcing contact surface F1B. Therefore, when the depth of the separation groove (H) increases, the amount of bending deformation of the body 110, except for the upper side of the reinforcing contact surface (F1B) increases.

That is, in the shoe sole 20 having a trampoline structure according to another embodiment of the present invention, even when the enlarged contact surface F1C is formed and the area of the flexible contact surface F2 is relatively reduced, By increasing the amount of bending deformation of the body 110 above the enlarged contact surface (F1C), the outsole 200 absorbs the ground reaction force while sufficiently compressive deformation in the insertion groove (111).

As shown in FIG. 8 and FIG. 9, the outsole 200 absorbs ground reaction force through elastic deformation, and includes a bonding pad 210 and a deformation cell 220.

As shown in Figure 9 (a), the bonding pad 210 is a configuration that forms a continuous bonding surface with the body 110 inside the insertion groove 111, it is formed literally in the form of a pad. Bonding pad 210 forms a continuous bonding surface with the body 110 in the insertion groove 111 to absorb the ground reaction while bending or unfolding integrally with the midsole 100 during walking.

The deformation cell 220 is configured to form a flexible contact surface F2 on the surface thereof, and protrudes from the bonding pad 210 in a direction facing the ground reaction force. The deformable cells 220 are provided in plural and form hexagonal pillar shapes in which the cross-sectional area decreases toward the load direction, respectively.

9 to 11, the flexible contact surface F2 is a contact surface formed by the deformation cell 220 with the ground, and includes a surface contact surface F2A and an inclined contact surface F2B.

As described above, the deformation cell 220 forms a flexible contact surface F2 on the surface thereof. That is, the bottom surface of the deformation cell 220 forms a surface contact surface F2A, the side surface of the deformation cell 220 forms an inclined contact surface F2B, and a stepped contact surface is formed between the bottom surface and the side surface of the deformation cell 220. F2C).

As shown in FIGS. 10 and 11, the surface contact surface F2A is the bottom surface of the deformation cell 220 perpendicular to the direction of action of the ground reaction force, and the inclined contact surface F2B when the shoe sole 20 treads the ground. It contacts the ground earlier than the step contact surface F2C. The surface contact surface F2A forms a hexagonal plane. A hexagonal groove may be formed in the surface contact surface F2A.

The inclined contact surface F2B is an inclined side surface of the deformation cell 220, and is in close contact with the ground during compression and bending deformation of the deformation cell 220. Also, the inclined contact surface F2B may be in close contact with the ground by protruding portions of the ground into the surface contact surface F2A.

As described above, each of the plurality of deformation cells 220 forms a plurality of three-dimensional contact surfaces, that is, surface contact surfaces F2A and inclined contact surfaces F2B, on the surface thereof. Therefore, each deformable cell 220 is compressed and flexurally deformed at different shapes and angles according to the curved shape of the ground to form a wide bottom surface to absorb ground reaction force.

As shown in FIG. 11, the flexible contact surface F2 is provided with a spaced area in contact with the ground in the process of increasing ground reaction force applied to the enlarged contact surface F1C.

Although the spaced area is not indicated by the reference numeral, as shown in FIGS. 11A and 11B, the area of the flexible contact surface F2 spaced apart from the ground when the enlarged contact surface F1C contacts the ground during walking. It should be understood as indicating. That is, as illustrated in FIGS. 10A and 10B, the flexible contact surface F2 contacting the ground together with the enlarged contact surface F1C during walking is not included in the separation region.

Separation groove (H) is reduced in depth in the contact with the separation area. As described above, the separation groove H is formed in the body 110 between the enlarged contact surface F1C, the reinforcement contact surface F1B, and the basic contact surface F1A. When the separation groove H is formed, the body 110 has a greater amount of bending deformation at the upper side of the enlarged contact surface F1C than the upper side of the reinforcing contact surface F1B. Therefore, when the depth of the separation groove (H) increases, the amount of bending deformation of the body 110, except for the upper side of the reinforcing contact surface (F1B) increases.

The outsole 200 is formed of a material having a lower hardness than the body 110. The hardness of the outsole 200 is 45, and the body 110 has a higher hardness than the outsole 200.

As shown in FIG. 8A, the pair of reinforcing contact surfaces F1B are disposed to surround the front and rear ends of the flexible contact surface F2, respectively, and the pair of basic contact surfaces F1A are the flexible contact surfaces. Forms of connecting the reinforcing contact surfaces (F1B) on both sides of (F2), respectively. The enlarged contact surface F1C is interposed between the flexible contact surface F2 and the basic contact surface F1A and the reinforcement contact surface F1B.

10 and 11 illustrate a state in which the bottom surface of the shoe sole 20 is in contact with the ground. FIG. 10 (a) is a sectional view taken along line BB of FIG. 8 (a), FIG. 10 (b) is a sectional view taken along line CC of FIG. 8 (a), and FIG. 11 (a) is a sectional view taken along line DD of FIG. (b) is EE sectional drawing of FIG.

When walking, the shoe sole 20 starts from the heel and evenly reaches the entire sole of the sole. When walking, the shoe sole 20 falls from the ground after the front bottom reaches the floor by the rotation of the legs and ankles, starting with the rear bottom.

That is, in the shoe sole 20 having a trampoline structure according to another embodiment of the present invention, the reinforcing contact surface F1B at the rear of the shoe 1 first touches the ground when walking, and then the reinforcing contact surface F1B is separated from the space. Together, the enlarged contact surface F1C touches the ground (see FIG. 11 (b)), and then the enlarged contact surface F1C touches the ground with the basic contact surface F1A in the spaced apart region (see FIG. 11 (a)), 11 (b) and 11 (a), the reinforcing contact surface F1B, the enlarged contact surface F1C, and the flexible contact surface F2 on the front of the shoe 1 touch the ground.

10 and 11 denotes a foot of the wearer, P denotes a force (kinetic energy) applied to the bottom surface by the foot when walking, and R1 denotes a flexible contact surface (from the ground). F2) means the ground reaction force applied to, and the reference numeral R2 means the ground reaction force applied to both rigid contact surface (F1) from the ground, and the reference numeral M means a moment formed in the midsole (100).

As shown in FIG. 11 (b), in the separation area, the flexible contact surface F2 is spaced apart from the ground at the moment when the rigid contact surface F1 touches the ground. That is, the body 110 supports P while bending deformation by the moment M by P and R2 until R1 is formed. R1 is transmitted from the ground to the flexible contact surface (F2) at the moment when the compression and bending deformation of the body 110 proceeds to contact the flexible contact surface (F2).

As shown in FIG. 11, the separation groove H decreases in depth at a position in contact with the separation region. When the depth of the separation groove (H) is reduced, the amount of bending deformation of the body 110 on the enlarged contact surface (F1C) is reduced and the compression deformation of the body 110 is increased. Therefore, when the depth of the separation groove (H) in the position in contact with the separation area is reduced, excessive bending deformation of the body 110 is suppressed until the flexible contact surface (F2) touches the ground.

As described above, the body 110 has a higher hardness than the outsole 200. Therefore, even if P is applied to the shoe sole 20 on the flexible contact surface F2, the sum of R2 is larger than R1.

The body 110 supports P while flexurally deforming by moments M by P and R1 and R2. At this time, the outsole 200 absorbs the ground reaction force R1 while compressing the deformation in the insertion groove 111. That is, in the process of absorbing the ground reaction force R1 while the outsole 200 is compressively deformed in the insertion groove 111, the midsole 100 supports P from the ground and in conjunction with the compression deformation of the outsole 200. It flexes and deforms and absorbs ground reaction force (R2).

At this time, the reinforcement body 120 formed of a material having a higher hardness than the body 110 induces a compressive deformation of the body 110 to resist bending deformation of the body 110. That is, the body 110 increases the compressive deformation in the load direction (ground reaction force direction) instead of reducing the bending deformation due to the restraining force of the reinforcing body (120).

Since the outsole 200 has a lower hardness than the midsole 100, the outsole 200 deforms according to various bendings of the ground, thereby forming a wide contact surface with the ground. In this case, compression and bending deformation may simultaneously occur in the plurality of deformation cells 220.

The shock absorption due to the interlocking elastic deformation of the midsole 100 and the outsole 200 forms the same mechanism as the shock absorption of the trampoline. A trampoline is a mechanism consisting of a resilient mesh with a spring connected to it, which comprises a frame, a safety plate, a mesh and a spring.

The frame refers to a metal body on which the spring is connected to support the net, and a mat with a cushion wrapped around the frame to prevent injury to the safety pad gymnast. The frame is supported from the ground by a leg, a metal structure.

A bed is a fabric usually made of nylon. Gymnasts jump on the net and perform free acting, such as aerial acrobatics. A spring is an elastic metal coil that gives elasticity to the mesh. There are usually 120 springs in the trampoline.

That is, in the shoe sole 20 having a trampoline structure of the present invention, the outsole 200 directly acts as a bed to which the kinetic energy of the gymnast is directly applied, and directly absorbs ground reaction force while deforming according to the ground curvature. The body 110 acts as a spring to absorb the kinetic energy of the mesh by its elastic deformation to absorb the ground reaction force by the bending deformation in conjunction with the compression deformation of the outsole 200, the reinforcement body 120 is The spring is connected to act as a frame (bearing) for supporting the mesh to suppress excessive bending deformation of the body (110).

Therefore, the shoe sole 20 having the trampoline structure of the present invention can absorb a larger impact even if it forms a thinner thickness than the sole of the patent No. 1067892.

According to the present invention, in the process of absorbing the ground reaction while the deformation cell is compressively deformed in the insertion groove, the body absorbs the ground reaction while bending deformation in conjunction with the compression deformation of the outsole, the reinforcement resists the bending deformation of the body By inducing the compression deformation of the body, while absorbing the impact of the ground efficiently while forming a simple structure, the flexible bend of the sole is possible according to the bending of the foot during walking, and the trampoline structure is made to improve the ground adaptability and grounding force It is possible to provide a shoe sole having and a shoe comprising the same.

While specific embodiments of the invention have been described and illustrated above, it is to be understood that the invention is not limited to the described embodiments, and that various modifications and changes can be made without departing from the spirit and scope of the invention. It is self-evident to those who have. Therefore, such modifications or variations are not to be understood individually from the technical spirit or point of view of the present invention, the modified embodiments will belong to the claims of the present invention.

1: shoes 2: upper
10,20: Shoe sole
100: midsole 200: outsole
110: body 210: bonding pad
111: insertion groove 220: deformation cell
112: stepped surface F2: flexible contact surface
H: Separation groove F2A: Surface contact surface
120: reinforcing body F2B: inclined contact surface
F1: Rigid Contact Surface F2C: Step Contact Surface
F1A: basic contact surface
F1B: Reinforcement contact surface
F1C: Enlarged Contact Surface

Claims (6)

Shoe sole with bottom surface forming rigid contact surface and flexible contact surface,
The rigid contact surface is provided at the edge of the bottom surface,
The flexible contact surface is surrounded by the rigid contact surface,
A midsole forming the rigid contact surface and having an insertion groove formed therein; And an outsole having a lower hardness than the midsole and being inserted into the insertion groove to form the flexible contact surface.
The rigid contact surface includes a pair of reinforcing contact surfaces surrounding the front and rear ends of the flexible contact surface, respectively; And a pair of basic contact surfaces respectively connecting the reinforcing contact surfaces,
The midsole has a body having a stepped surface higher than the basic contact surface and the basic contact surface, the upper is coupled; And a reinforcement having a higher hardness than the body and coupled to the step surface to form the reinforcing contact surface.
The outsole may include: a bonding pad forming a continuous bonding surface with the midsole; And a plurality of deformation cells protruding from the bonding pad in a direction facing ground reaction force.
In the process of absorbing the ground reaction force while the deformation cell is compressively deformed in the insertion groove, the body absorbs ground reaction force by bending deformation in conjunction with the compression deformation of the deformation cell, the reinforcement is bending deformation of the body Shoe sole having a trampoline structure, characterized in that it induces compression deformation of the body in response to. The method of claim 1,
The rigid contact surface further includes an enlarged contact surface formed in the body and interposed between the reinforcement contact surface and the basic contact surface and the flexible contact surface.
The body of the shoe sole having a trampoline structure characterized in that the groove is formed between the reinforcing contact surface and the basic contact surface and the enlarged contact surface. delete The method of claim 1,
The deformation cell forms a hexagonal column shape in which the cross-sectional area decreases toward the load direction,
The flexible contact surface,
A surface contact surface which forms a bottom surface of the deformation cell and is perpendicular to the direction of action of the ground reaction force; And
A shoe sole having a trampoline structure forming a side surface of the deforming cell and including an inclined contact surface in close contact with the ground when the deforming cell is deformed. The method of claim 1,
The deformation cell forms a columnar shape in which the cross-sectional area decreases toward the load direction,
The flexible contact surface,
A surface contact surface which forms a bottom surface of the deformation cell and is perpendicular to the direction of action of the ground reaction force;
An inclined contact surface which forms a side surface of the deformation cell and is in close contact with the ground when the deformation cell is deformed; And
Shoe sole having a trampoline structure, characterized in that it comprises a plurality of stepped contact surface for connecting the surface contact surface and the inclined contact surface in a step. The sole of claim 1; And
Shoes comprising an upper coupled to the sole of the shoe.

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