JP5411988B2 - Shoe insoles - Google Patents

Description

  The present invention relates to an insole that is inserted into the bottom of a shoe and is in contact with a human foot and supports the foot, and has a buffering action. In particular, the pressure due to the human weight acts differently according to the position of the foot. The present invention relates to a single-layer insole made of a material having different hardness depending on the position in consideration of pressure distribution.

  In general, an insole (insole) that protects the foot is installed inside the shoe so that it touches the sole of the human foot, supports the weight of the human body, and protects the foot. It is manufactured in a similar manner, and a specific part is projected to support the recessed part of the sole.

  Moreover, since the material of the insole is integrally manufactured using an elastic and recoverable foamed resin such as urethane foam, the entire insole is manufactured as one material.

  By the way, when the sole touches the ground during walking, the pressure corresponding to the weight of the human does not act uniformly on the entire area of the sole. For example, the pressure is excessively concentrated on the front part and the heel part of the middle foot part, while a relatively low pressure acts on the recessed part of the middle foot part.

  Therefore, an insole made of a single material cannot adequately respond to pressures that differ depending on the position of the sole, so that it is not possible to adequately buffer the portion where the pressure is concentrated, and during long walks, along with foot pain There is a problem that feels tired immediately.

  As a conventional technique for solving this, Korean Utility Model No. 20-0388223 is divided into two sections, a front part and a rear part, by cutting the middle part of the insole in the lateral direction. An insole of a foam in which the hardness of each part is different is disclosed.

  However, from the viewpoint of human mechanics, such a foam insole is manufactured by simply differentiating the hardness of the material of the front part and the rear part without considering the pressure distribution acting on the sole. Therefore, it cannot be said that the buffer against pressure is sufficient. That is, in the case of the front part of the insole, the pressure distribution is efficient because the pressure is different between the part where the base of the toe touches and the part where the toe touches, even though the pressure is different. I can't say that.

  In addition, in the prior art, a specific part where the pressure acts on the upper surface of a basic insole is added with a section of an insole made of a low hardness material. Because it is in a state of overlapping, there is a different texture due to the difference in thickness between the overlapping part and the part that is not, it is not comfortable to wear, and the added part is glued with adhesive, so it is breathable In addition to being bad, there are problems such as peeling when the adhesive strength of the bonded part is weakened.

  In order to solve the above-mentioned problems, the present inventor considered the human physical aspect related to the pressure acting according to the body weight when the foot is grounded, and considered the foot pressure and the shape change during walking. Was completed.

  That is, an object of the present invention is to manufacture a single layer insole using materials having different hardnesses according to positions according to pressure distribution generated differently at each position when the foot is grounded. When the insole of the present invention is applied by forming the toe part, metatarsal bone, forefoot bone, etc. in combination with the shape corresponding to the shape of the sole, it feels like a bare foot. It is to provide a felt shoe insole.

  In order to achieve the above object, the present invention provides an insole that is in contact with the soles of the front foot (A), middle foot (C), and rear foot (B) of a human and is inserted into a shoe. Is composed of a plurality of materials having different hardnesses according to areas, and each material is combined into one layer.

  As a specific means for this purpose, the present invention includes a forefoot hole (11), a middle part corresponding to any one of the above-mentioned foot parts (A), (B), (C). The base plate (10) in which any one of the foot hole (13) and the rear foot hole (12) is formed and inserted into any one of the holes (11), (12), (13). A base plate (10) comprising an inner plate (20) including at least one of a front foot support (21), a middle foot support (23), and a rear foot support (22). And the inner plate (20) are made of different materials.

  As a further preferred embodiment, in the present invention, a heel hole (22a) is formed in the support portion (22) of the rear foot portion of the inner plate (20), and the hardness of the heel hole is different from that of the inner plate (20). The first plate (22b) made of material is inserted.

  Further, as a more preferred embodiment, a base hole (23a) of a toe is perforated in a support part (23) of a middle foot part of the inner plate (20), and an inner plate (20) is formed in the base hole of the toe. The second plate (23b) made of a material having different hardness is inserted.

  According to the present invention, in addition to providing an insole having the same shape as the shape of a human foot sole, the insole is formed of a material having different hardness according to the position according to the pressure distribution acting when the foot contacts the ground. Therefore, the impact force at the portion where the pressure is concentrated can be appropriately absorbed, and at the same time, the shape change is hardly formed at the portion where the pressure hardly acts. Therefore, it improves the fit and provides a comfortable feeling like a bare foot.

  Furthermore, instead of layering materials with different hardnesses on top of each other, the pressure distribution is divided into sections and the shape corresponding to each section is made of materials with different hardnesses, and then assembled in a form that sandwiches the respective materials. As a single layer is formed, there is an advantage that there is no different texture as compared with the case of overlapping, no adhesive is used, and the air permeability between each material is excellent.

  Accordingly, sweat is quickly dried and malodors are easily discharged, so that comfortable comfort is maintained.

It is a pressure distribution figure which acts on a sole at the time of grounding of a foot. 1 is an exploded perspective view of an insole of a shoe according to the present invention. 1 is an assembled perspective view of a shoe insole according to the present invention. It is a top view of the insole of the shoes by this invention. 1 is a partial sectional view of an insole of a shoe according to the present invention. FIG. 6 is an assembled perspective view of a shoe insole according to another embodiment of the present invention. FIG. 6 is a plan view of a shoe insole according to still another embodiment of the present invention.

Best Mode for Carrying Out the Invention

  In the insole that is in contact with the soles of the human forefoot (A), middle foot (C), and rear foot (B) and is inserted into the shoe, the present invention has different hardness for each region. It consists of a plurality of materials, each material being combined into one layer, and preferably any one of the above-mentioned feet (A), (B), (C) inside Corresponding to the base plate (10) on which any one of the front foot hole (11), the middle foot hole (13), and the rear foot hole (12) is formed, and the holes (11), ( 12), any one or more of the front foot support (21), the middle foot support (23), and the rear foot support (22) inserted into any one of (13) An inner plate (20) including the base plate (10) and the inner plate (20 Relates insole of a shoe made with a material hardness is different.

  Hereinafter, the present invention will be described in detail with reference to the attached insole showing the preferred embodiment of the present invention.

  FIG. 1 is a view showing a pressure distribution acting on a sole when the foot is in contact with the ground. First, in order to understand the present invention, names of human soles and corresponding parts of an insole are defined.

  As shown in FIG. 1, in general, the sole of the foot consists of a forefoot part (A) including toes, a rear foot part (B) including heels, and a front foot part (A) and a rear foot part (B). When walking or running, or when the sole touches the ground, the pressure distribution varies depending on the position of the sole depending on the body weight.

  Of course, there is a slight difference depending on the posture of the gait, but when the pressure distribution in a general case is examined, it is found that the heel part of the rear foot part (B) and the base part of the toes of the middle foot part (C) A first area (1) on which a relatively large pressure acts is distributed, and the first area (1) is surrounded around the first area (1) including a portion where the toes of the forefoot (A) are grounded. The second area (2) in which a pressure lower than the pressure of 1) acts is distributed, and includes the first and second areas (1), (1) including the arch-shaped indented portion in the midfoot (C). A third zone (3) in which a relatively low pressure acts is distributed in the remaining portion except 2).

  In consideration of such a human mechanical pressure distribution, the present invention is in contact with the soles of the human forefoot (A), middle foot (C), and rear foot (B) and inside the shoe. The insole to be inserted is composed of a plurality of materials having different hardnesses according to the areas, and when the materials are combined, one layer is formed. This is illustrated in FIG.

  2 is an exploded perspective view of a shoe insole according to the present invention, FIG. 3 is an assembled perspective view of the shoe insole according to the present invention, and FIG. 4 is a plan view of the shoe insole according to the present invention.

  As shown in FIGS. 2 to 4, the insole of the present invention is provided with a base plate (10) whose edges are shaped like soles, and inside the base plate (10), a forefoot hole (11), Holes such as the middle foot hole (13) and the rear foot hole (12) are formed. These holes (11), (12), and (13) are the front foot part (A) and the middle part of the sole, respectively. It is a position corresponding to the foot (C) and the rear foot (B).

  Of course, according to the deformable embodiment of the present invention, any one of the front foot hole (11), the middle foot hole (13), or the rear foot hole (12) or two arbitrarily selected. Instead of being formed, it can also be formed integrally with the base plate (10) itself.

  That is, only one of the front foot hole (11), the middle foot hole (13), and the rear foot hole (12) can be formed, or only two arbitrarily selected can be formed. Various modifications are within the scope of the present invention.

  As shown in FIG. 1, the manufactured base plate (10) may have a shape corresponding to the third zone (3) where the pressure is relatively low, and the low pressure is taken into consideration. Thus, it is manufactured from a material having high hardness, that is, a material having low elasticity. If the hardness of the base plate (10) is in the range of 65 to 80, preferably 68 to 76 on the basis of Asker C TYPE hardness, the material is not limited. Examples of the material include an ethylene vinyl acetate (EVA) foam molded article and a polyurethane (PU) foam molded article.

  On the other hand, when any one or more of the holes (11), (12), (13) are formed in the base plate (10), the formed holes (11), (12) (13) An inner plate (20) molded into a corresponding shape is provided. That is, the inner plate (20) is assembled so that the insole becomes a single layer by filling any one of the holes (11), (12), (13). Accordingly, the front foot support portion (21), the middle foot support portion (23), and the rear foot support portion (22) can correspond to each hole.

  As shown in FIG. 1, since a relatively larger pressure acts on the portion where the inner plate (20) is located than the position of the base plate (10), the inner plate (20) is different from the base plate (10). It manufactures with the raw material from which hardness differs, Preferably, it manufactures with the raw material whose hardness is still lower compared with a baseplate (10). The material of the inner plate (20) is not limited as long as it is in the range of 25 to 40, preferably 28 to 36 on the basis of Asker C TYPE hardness. Examples of the material include an ethylene vinyl acetate (EVA) foam molded article and a polyurethane (PU) foam molded article.

  As described above, when the base plate (10) having a high hardness and the inner plate (20) having a relatively low hardness are coupled to each other, the inner plate (20) having a low hardness corresponding to a portion where a large pressure is applied. As it is applied, not only is it effective in the buffering action, but the insole where the base plate (10) and the inner plate (20) are combined becomes a single layer, so that a layer is formed as compared with the overlapping. Because it is not done, there is no different texture and the fit is improved.

  On the other hand, a material having a lower hardness can be separately located in the inner plate (20). That is, a heel hole (22a) corresponding to a portion in contact with the heel is formed in the support portion (22) of the rear foot portion of the inner plate (20), and the inner plate (20) and the hardness are formed in the heel hole (22a). The first plate (22b) made of different materials can be sandwiched, and preferably, the first plate (22b) is made of a material whose hardness is lower than the inner plate (20) hardness.

  In this way, as shown in FIG. 1, since the pressure is relatively large distributed in the heel portion (first area), if a material having a low hardness is adopted in the corresponding portion and brought into contact with the heel, the buffer is buffered. Of course, the effect is excellent, and the entire insole is a single layer, so there is no different texture due to the difference in thickness, and the fit is improved.

  Due to such a technical idea, a toe base hole (23a) is formed at a position corresponding to the toe base of the middle foot portion (C) in the support portion (23) of the middle foot portion of the inner plate (20). A second plate (23b) made of a material having a hardness different from that of the inner plate (20) can be inserted in order to pierce and bury and assemble the base hole (23a) of the toe, preferably the second plate (23b) is manufactured with a material whose hardness is lower than that of the inner plate (20).

  Accordingly, as shown in FIG. 1, since the pressure is greatly distributed (first area) in the base part of the toe as in the case of the heel part, a material having low hardness is selected for the part and is in contact with the base of the toe. When doing so, the insole is of course a single layer, so there is no different texture and the fit is improved.

  Since the first plate (22b) and the second plate (23b) are relatively softer than the base plate (10) or the inner plate (20), it is difficult to measure with the ASKER C TYPE hardness. The material is not limited as long as it is in the range of 60 to 72, preferably 62 to 70 on the Shore hardness basis. Examples of the material include an ethylene vinyl acetate (EVA) foam molded body and a breathable polyurethane (PU) foam molded body.

  As described above, the insole assembled with the material having different hardness depending on the position corresponds to the front edge portion, more specifically, the front edge portion of the base plate (10) to the protruding shape of the toes. A concave and convex surface (15) that is dented in shape is formed, and in this case, the front portion of the insole has the same shape as the toe structure, which is comfortable to wear and can further improve the fit. (See Figure 4)

  In the base plate (10), the side of the portion corresponding to the middle foot (C) was raised upward in an arch shape corresponding to the dent formed in the middle foot (C) of the sole. The metatarsal support portion (16) is formed. In this case, the relatively hard metatarsal support portion (16) supports the indented portion of the metatarsal portion of the sole so Can be improved.

  Similarly, in the base plate (10), a dent formed on the forefoot (A) of the sole between the forefoot hole (11) and the midfoot hole (13), that is, the toe and the midfoot ( C) When the forefoot support part (17) raised upward corresponding to the indentation formed in the part between C is formed, the indentation of the forefoot part (A) is a forefoot support part with high hardness ( 17), the fit can be improved.

  Further, when the first and second plates (22b) and (23b) including the base plate (10) or the inner plate (20) are formed, the first and second plates have a selectively small diameter vent hole. When the piercing is perforated in the vertical direction, air is passed in the vertical direction of the insole, so that it is possible to reduce the cause of bad odor as well as to prevent it from being sweated.

  FIG. 5 is a partial cross-sectional view of a shoe insole according to the present invention.

  As shown in FIG. 5, an insole composed of a base plate (10) and an inner plate (20), or a base plate (10), an inner plate (20), and first and second plates (22b) and (23b) are formed. Since the insole is assembled by a material having different hardness into one layer, it is necessary to prevent them from being separated from each other.

  Accordingly, the entire outer surface of the insole can be wrapped and fixed with a cover (30), and the cover (30) is preferably made of a breathable fabric, and since it does not use an adhesive, It is constructed by a method of bulging on the outer surface of the insole. As a modification to this, since the shape of the insole is maintained even when the cover (30) is raised only on the upper surface of the insole, the cover (30) can be raised on the upper surface of the insole.

  FIG. 6 is an assembled perspective view of a shoe insole according to another embodiment of the present invention, and the present invention can be modified as follows.

  As shown in FIG. 6, in the case of the first plate (22b) and the second plate (23b), since the hardness is low, when the load is transmitted, the first plate (22b) and the second plate (23b) are in contact with the first and second plates (22b) and (23b). Compared to the inner plate (20), the plate is further compressed and may feel a different texture at the boundary surface between the plates.

  Therefore, the different texture can be minimized by making the first and second plates (22b) and (23b) slightly protrude from the inner plate (20) and project upward. Its height is about 0.5 to 1.0 mm. As a more preferable shape, the protruding shape of the first and second plates (22b) and (23b) is an arch shape on the cross section, that is, the boundary surface height is the same as that of the inner plate (20), and gradually rises inward. The projecting shape can further minimize the different texture.

  On the other hand, as shown in FIG. 6, when the vent holes (16a) and (17a) are formed in the metatarsal support (16) and the forefoot support (17) of the base plate (10), respectively, When the raised portion of the base plate (10), ie, the metatarsal support (16) and the forefoot support (17) is compressed, the interior of the vent holes (16a) (17a) is compressed and restored. If it plays a role of pumping while repeating the above, air inside the shoe is circulated, so that air permeability is improved.

  Of course, the ventilation hole is not limited to being applied to a specific part of the base plate (10), and when the first and second plates (22b) and (23b) including the inner plate (20) are provided, Ventilation holes can also be formed in each plate. That is, ventilation holes are formed on the entire surface of the insole.

  FIG. 7 is a plan view of a shoe insole according to a further embodiment of the present invention, and the same reference numerals are used for the same portions as those of the above-described embodiment.

  According to a modified embodiment of the present invention, as shown in FIG. 7, the base plate (10) includes a metatarsal support (16) that supports a dent of the metatarsal (C), The support part (16) is extended so as to support the edge part of the rear foot part (B), and the support part (16) of the metatarsal bone and the extended edge part of the rear foot part are manufactured integrally. Is done.

  The inner plate (20) includes a front foot support (21) that supports the entire front foot (A), and is integrally extended from the front foot support (21) to support the metatarsal bone. The support part (23) of the middle foot part excluding (16), and the rear foot part (B) extended from the support part (23) of the middle foot part to the inside of the edge of the rear foot part (B). Further, the base plate (10) and the inner plate (20) are designed to have different hardnesses. Preferably, the hardness of the base plate (10) is higher than the hardness of the inner plate (20), and each material and hardness are selected from the types of materials and the numerical values of hardness described above.

  On the other hand, a heel hole (22a) corresponding to a portion in contact with the heel is formed in the support portion (22) of the rear foot portion of the inner plate (20), and the inner plate (20) and the hardness are formed in the heel hole (22a). The first plate (22b) made of a different material can be sandwiched, and the first plate (22b) is preferably made of a material whose hardness is lower than that of the inner plate (20).

  Further, a toe base hole (23a) is drilled in a position corresponding to the base of the toe of the middle foot (C) in the support portion (23) of the middle foot of the inner plate (20), and the foot In order to fill and assemble the finger base hole (23a), a second plate (23b) made of a material having a hardness different from that of the inner plate (20) can be inserted. Preferably, the second plate (23b) is manufactured from a material whose hardness is lower than the hardness of the inner plate (20), and the material and hardness of the first and second plates are selected from the aforementioned materials and hardness values.

  As described above, the present invention is characterized in that the inside of the insole is made of a plurality of materials having different hardness depending on the position, but the respective materials are combined into one layer. Such features vary with respect to the structure shown, even though the present invention will be described in the context of a limited structure in the accompanying drawings and the description of unnecessary parts may be omitted. However, it is not limited to the structure of the illustrated embodiment and the description thereof, and those skilled in the art can appropriately modify the design as necessary according to the technical idea described above. Included in range.

  In addition to providing an insole that has the same shape as the human sole, the pressure is concentrated because the insole is formed of a material with different hardness according to the position according to the pressure distribution that acts when the foot touches the ground. The impact force of the part to be absorbed can be absorbed as appropriate, and the shape change is hardly formed in the part where the pressure hardly acts. Therefore, it improves the fit and provides a comfortable feeling like a bare foot.

DESCRIPTION OF SYMBOLS 10 ... Base plate 11 ... Forefoot part hole 12 ... Rear foot part hole 13 ... Middle foot part hole 15 ... Concave surface 16 ... Support part of metatarsal bone 17 ... Forefoot bone Support part 20 ... Inner plate 21 ... Support part of front foot part 22 ... Support part of rear foot part 22a ... Saddle hole 22b ... First plate 23 ... Support of middle foot part Part 23a: Toe base hole 23b ... Second plate 24 ... Second plate 30 ... Cover A ... Forefoot part B ... Rear foot part B ... Middle foot part

Claims (17)

From a plurality of materials that touch the soles of the human forefoot (A), middle foot (C), and rear foot (B), are inserted into the shoe, and the insole has different hardness depending on the position. It is a shoe insole that combines each material into one layer ,
The insole includes a metatarsal support portion (16) that supports a dent of the metatarsal portion (C), and is integrally extended from the metatarsal support portion (16), and an edge of the rear foot portion (B). A base plate (10) configured to support the portion; and
A forefoot portion including a forefoot support portion (21) for supporting the entire forefoot portion (A), and extending integrally from the forefoot support portion (21) and excluding the metatarsal support portion (16). The support part (23) of the rear foot part and the support part (23) of the middle foot part are extended integrally to the inner edge of the rear foot part (B) and support the rear foot part (B) center. The inner plate (20) further includes a portion (22),
A shoe insole, wherein the base plate (10) and the inner plate (20) are made of materials having different hardness . From a plurality of materials that touch the soles of the human forefoot (A), middle foot (C), and rear foot (B), are inserted into the shoe, and the insole has different hardness depending on the position. It is a shoe insole that combines each material into one layer,
The insole has a front foot hole (11), a middle foot hole (13), and a rear foot hole so as to correspond to any one of the feet (A), (B), and (C), respectively. A base plate (10) comprising any one of (12), and
Front foot support (21), rear foot support (22), and middle foot support assembled to correspond to any one of the holes (11), (12), and (13), respectively. The inner plate (20) including any one of the parts (23),
The insole for a shoe, wherein the base plate (10) and the inner plate (20) are made of materials having different hardnesses. The shoe insole according to claim 1 or 2, wherein the hardness of the base plate (10) is higher than the hardness of the inner plate (20). A heel hole (22a) is drilled in the support portion (22) of the rear foot of the inner plate (20), and a first plate (22b) having a hardness different from that of the inner plate (20) is formed in the heel hole (22a). The shoe insole according to claim 1 or 2 , wherein the shoe insole is inserted. The insole for shoes according to claim 4, wherein the hardness of the inner plate (20) is higher than the hardness of the first plate (22b). 6. The shoe insole according to claim 5, wherein the height of the first plate (22b) protrudes upward from the inner plate (20). A toe base hole (23a) is perforated in the support part (23) of the middle foot part of the inner plate (20), and the toe base hole (23a) has a hardness different from that of the inner plate (20). The shoe insole according to claim 1 or 2, wherein two plates (23b) are inserted. The shoe insole according to claim 7, wherein the hardness of the inner plate (20) is higher than the hardness of the second plate (23b). The shoe insole according to claim 8, wherein the second plate (23b) is higher than the inner plate (20) and protrudes upward. In the protruding form of the first and second plates (22b) and (23b), the height of each boundary surface with the inner plate (20) is the same, and the cross section gradually rising inward is an arch shape. The insole for a shoe according to claim 6 or 9 , wherein the insole is provided. The insole for a shoe according to claim 1 or 2 , wherein the insole includes an uneven surface with a front edge recessed in a shape corresponding to a protruding shape of a toe. The shoe according to claim 1 or 2 , wherein the insole includes a support portion of a metatarsal raised upward corresponding to a dent formed in a midfoot portion (C) of a sole. insole. The shoe insole according to claim 12, wherein a plurality of ventilation holes are perforated in the support portion of the metatarsal bone. The insole for a shoe according to claim 1 or 2 , wherein the insole includes a support portion of a forebone raised upward corresponding to a dent formed in a forefoot portion (A) of a sole. The shoe insole according to claim 14, wherein a plurality of ventilation holes are perforated in the support portion of the forefoot bone. The shoe insole according to claim 1 or 2 , wherein the insole is formed with a plurality of ventilation holes in the vertical direction. The insole according to claim 1 or 2, 11 to 16 shoe insole according to one of, further comprising a cover (30) enclosing the entire top surface or the outer surface.