Multi-function shoe pad

Abstract

A multi-function shoe pad is composed of a main body for a user's human sole to tread. The main body includes a hollow bulge integrally protruding toward a top side thereof and from a bottom side in such way that a chamber is formed below the hollow bulge. The chamber is deformable between a compressed state and an uncompressed state, so the hot air inside the chamber can exhaust and the cold air can be sucked into the chamber to enhance the air convection inside the user's shoe. Besides, the hollow bulge can allow the user's foot to tightly cling to the shoe to enable the shoe pad to be skidproof.

1 . A multi-function shoe pad comprising a main body, which can allow a user's human sole to tread and structurally corresponds to respective portions of the user's human sole to be composed of a foot arch portion, a heel portion located behind the foot arch portion, a toe portion located before the foot arch portion and corresponding to the user's first, second, third, fourth, and fifth toes, and a metatarsus portion located between the foot arch portion and the toe portion, the foot arch portion having an internal foot-arch portion and an external foot-arch portion, the toe portion having an internal toe portion corresponding to the first toe and an external toe portion corresponding to the other toes of the user's foot, the metatarsus portion having an internal metatarsus portion and an external metatarsus portion; wherein the shoe pad is characterized in:
 the main body having a hollow bulge, the hollow bulge having an external convex surface integrally protruding from a top side of the main body, an internal concave surface integrally recessed from a bottom side of the main body and corresponding to the external convex surface, and a chamber defined by the internal concave surface, the chamber being deformable between a compressed state and an uncompressed state.   
     
     
         2 . The shoe pad as defined in  claim 1 , wherein the external convex surface of the hollow bulge comprises a reinforcing recession. 
     
     
         3 . The shoe pad as defined in  claim 2  wherein the external convex surface of the hollow bulge comprises a plurality of protrusions; the reinforcing recession is located at a midsection of the external convex surface, the protrusions surrounding the reinforcing recession. 
     
     
         4 . The shoe pad as defined in  claim 1 , wherein the internal foot-arch portion comprises an arc-shaped convex portion integrally protruding from the bottom side of the main body, the arc-shaped convex portion having an arc-shaped top side and an arc-shaped bottom side; the hollow bulge is located at the arc-shaped convex portion; the external convex surface of the hollow bulge integrally protrudes from the arc-shaped top side; the internal concave surface of the hollow bulge is integrally recessed from the arc-shaped bottom side. 
     
     
         5 . The shoe pad as defined in  claim 4 , wherein the arc-shaped convex portion comprises a connection part for connection with the external convex surface of the hollow bulge and the top side of the main body. 
     
     
         6 . The shoe pad as defined in  claim 4 , wherein the main body further comprises another hollow bulge located at at least one of the heel portion, the external foot-arch portion, the metatarsus portion, and the toe portion and having an external convex surface integrally protruding from a top side of the main body, an internal concave surface integrally recessed from a bottom side of the main body and corresponding to the external convex surface, and a chamber defined by the internal concave surface, the chamber being deformable between a compressed state and an uncompressed state. 
     
     
         7 . The shoe pad as defined in  claim 4 , wherein the main body further comprises another hollow bulge located at at least one of the heel portion, the external foot-arch portion, the internal metatarsus portion, the external metatarsus portion, the internal toe portion, and the external toe portion and having an external convex surface integrally protruding from a top side of the main body, an internal concave surface integrally recessed from a bottom side of the main body and corresponding to the external convex surface, and a chamber defined by the internal concave surface, the chamber being deformable between a compressed state and an uncompressed state. 
     
     
         8 . The shoe pad as defined in  claim 1 , wherein the hollow bulge is located at the heel portion. 
     
     
         9 . The shoe pad as defined in  claim 8 , wherein the main body further comprises another hollow bulge located at at least one of the internal foot-arch portion, the external foot-arch portion, the metatarsus portion, and the toe portion and having an external convex surface integrally protruding from a top side of the main body, an internal concave surface integrally recessed from a bottom side of the main body and corresponding to the external convex surface, and a chamber defined by the internal concave surface, the chamber being deformable between a compressed state and an uncompressed state. 
     
     
         10 . The shoe pad as defined in  claim 8 , wherein the main body further comprises another hollow bulge located at at least one of the internal foot-arch portion, the external foot-arch portion, the internal metatarsus portion, the external metatarsus portion, the internal toe portion, and the external toe portion and having an external convex surface integrally protruding from a top side of the main body, an internal concave surface integrally recessed from a bottom side of the main body and corresponding to the external convex surface, and a chamber defined by the internal concave surface, the chamber being deformable between a compressed state and an uncompressed state. 
     
     
         11 . The shoe pad as defined in  claim 10  further comprising at least one elastic material, which is located in the chamber of the hollow bulge of at least one of the internal toe portion, the external toe portion, the internal metatarsus portion, the external metatarsus portion, the internal foot-arch portion, the external foot-arch portion, and the heel portion. 
     
     
         12 . The shoe pad as defined in  claim 10  further comprising at least one shock-absorbing material, which is located in the chamber of the hollow bulge of at least one of the internal toe portion, the external toe portion, the internal metatarsus portion, the external metatarsus portion, the internal foot-arch portion, the external foot-arch portion, and the heel portion. 
     
     
         13 . The shoe pad as defined in  claim 9 , wherein the internal foot-arch portion comprises an arc-shaped convex portion integrally protruding from the bottom side of the main body, the arc-shaped convex portion having an arc-shaped top side and an arc-shaped bottom side; the another hollow bulge is located at the arc-shaped convex portion; the external convex surface of the hollow bulge integrally protrudes from the arc-shaped top side; the internal concave surface of the hollow bulge is integrally recessed from the arc-shaped bottom side. 
     
     
         14 . The shoe pad as defined in  claim 8 , wherein the main body further comprises a first air groove formed at the bottom side thereof and longitudinally extending along the midst of the internal and external toe portions from a front peripheral edge thereof adjacent to the toe portion toward the heel portion for communication with the chamber. 
     
     
         15 . The shoe pad as defined in  claim 14 , wherein the first air groove comprises a first extended part and second extended part, the first extended part extending longitudinally along the midst of the internal and external toe portions from a front peripheral edge of main body adjacent to the toe portion toward the heel portion and communicating with the chamber, the second extended part communicating with the first extended part and transversally extending to an internal peripheral edge or an external peripheral edge of the main body or both adjacent to the heel portion. 
     
     
         16 . The shoe pad as defined in  claim 15 , wherein one of the first and second extended parts of the first air groove comprises an aperture recessed inwardly and located at one of the front peripheral edge adjacent to the toe portion and of an internal or external peripheral edge of the main body adjacent to the heel portion; the main body further comprises:
 a second air groove communicating with the first air groove and transversally extending along the midst of the toe portion and the metatarsus portion from the external peripheral edge of the main body adjacent to the external toe portion to the internal peripheral edge of the main body adjacent to the internal toe portion, the second air groove having an aperture recessed inwardly and formed at the external or internal peripheral edge of the main body adjacent to the midst of the toe portion and the metatarsus portion;   a third air groove communicating with the first air groove and transversally extending along the midst of the metatarsus portion and the foot arch portion from the external peripheral edge of the main body to the internal peripheral edge of the main body, the third air groove having an aperture recessed inwardly and formed at the external or internal peripheral edge of the main body adjacent to the midst of the metatarsus portion and the foot arch portion; and   a fourth air groove communicating with the third air groove and longitudinally extending along the profile of the internal foot-arch portion from the third air groove toward the heel portion to the second extended part of the first air groove.   
     
     
         17 . The shoe pad as defined in  claim 16 , wherein the main body further comprises another hollow bulge located at at least one of the internal foot-arch portion, the external foot-arch portion, the metatarsus portion, and the toe portion and having an external convex surface integrally protruding from a top side of the main body, an internal concave surface integrally recessed from a bottom side of the main body and corresponding to the external convex surface, and a chamber defined by the internal concave surface, the chamber being deformable between a compressed state and an uncompressed state, one of the first, second, third, and fourth air grooves communicating with at least one of the chambers of the two hollow bulges. 
     
     
         18 . The shoe pad as defined in  claim 16 , wherein the main body further comprises another hollow bulge located at at least one of the internal foot-arch portion, the external foot-arch portion, the internal metatarsus portion, the external metatarsus portion, the internal toe portion, and the external toe portion and having an external convex surface integrally protruding from a top side of the main body, an internal concave surface integrally recessed from a bottom side of the main body and corresponding to the external convex surface, and a chamber defined by the internal concave surface, the chamber being deformable between a compressed state and an uncompressed state, one of the first, second, third, and fourth air grooves communicating with at least one of the chambers of the two hollow bulges. 
     
     
         19 . The shoe pad as defined in  claim 18  further comprising at least one support member, which is mounted below at least one of the two hollow bulges and each has a convex wall and an air space located at an internal side of the convex wall. 
     
     
         20 . The shoe pad as defined in  claim 14 , wherein the first air groove comprises a smaller narrow portion communicating with the first air groove and the chamber. 
     
     
         21 . The shoe pad as defined in  claim 14 , wherein the first air groove comprises an aperture recessed inwardly formed at the front peripheral edge of the main body adjacent to the toe portion. 
     
     
         22 . The shoe pad as defined in  claim 11  further comprising a support member, which is mounted below the hollow bulge and has a convex wall and an air space located at an internal side of the convex wall. 
     
     
         23 . The shoe pad as defined in  claim 22 , wherein the support member comprises a bottom wall connected with the convex wall in one piece; the air space is jointly defined by the bottom wall and the convex wall. 
     
     
         24 . The shoe pad as defined in  claim 22  further comprising at least two support members, wherein the main body further comprises another hollow bulge having an external convex surface integrally protruding from a top side of the main body, an internal concave surface integrally recessed from a bottom side of the main body and corresponding to the external convex surface, and a chamber defined by the internal concave surface, the chamber being deformable between a compressed state and an uncompressed state, a coupling piece being connected between the two support members in one piece. 
     
     
         25 . A multi-function shoe pad comprising a main body, which can allow a user's human sole to tread and structurally corresponds to respective portions of the user's human sole to be composed of a foot arch portion, a heel portion located behind the foot arch portion, a toe portion located before the foot arch portion and corresponding to the user's first, second, third, fourth, and fifth toes, and a metatarsus portion located between the foot arch portion and the toe portion, the foot arch portion having an internal foot-arch portion and an external foot-arch portion, the toe portion having an internal toe portion corresponding to the first toe and an external toe portion corresponding to the other toes of the user's foot, the metatarsus portion having an internal metatarsus portion and an external metatarsus portion; wherein the shoe pad is characterized in that the main body comprises:
 a first layer having a hollow bulge, which has an external convex surface integrally protruding from the first layer, an internal concave surface recessed from a bottom side of the first layer and corresponding to the external convex surface, and a chamber formed defined by the internal concave surface, the chamber being deformable between a compressed state and an uncompressed state; and   a second layer mounted onto the first layer and having a hollow bulge, which has an external convex surface integrally protruding from the second layer, an internal concave surface recessed from a top side of the second layer and corresponding to the external convex surface, and a sealed chamber jointly defined by the internal concave surface and the top side of the first layer.   
     
     
         26 . The shoe pad as defined in  claim 25 , wherein the hollow bulge of the first layer is located at a position corresponding to the heel portion, the first layer further comprising another hollow bulge, which is located at at least one of the internal foot-arch portion, the external foot-arch portion, the metatarsus portion, and the toe portion and has an external convex surface integrally protruding from a top side of the main body, an internal concave surface integrally recessed from a bottom side of the main body and corresponding to the external convex surface, and a chamber defined by the internal concave surface and being deformable between a compressed state and an uncompressed state; and
 the hollow bulge of the second layer being located at a position corresponding to the metatarsus portion, the second layer further comprising another hollow bulge, which is located at at least one of the internal foot-arch portion, the external foot-arch portion, the heel portion, and the toe portion and has an external convex surface integrally protruding from a top side of the main body, an internal concave surface integrally recessed from a bottom side of the main body and corresponding to the external convex surface, and a sealed chamber jointly defined by the internal concave surface and the top side of the first layer.   
     
     
         27 . The shoe pad as defined in  claim 25 , wherein the hollow bulge of the first layer is located at a position corresponding to the heel portion, the first layer further comprising another hollow bulge, which is located at at least one of the internal foot-arch portion, the external foot-arch portion, the internal metatarsus portion, the external metatarsus portion, the internal toe portion, and the external toe portion and has an external convex surface integrally protruding from a top side of the main body, an internal concave surface integrally recessed from a bottom side of the main body and corresponding to the external convex surface, and a chamber defined by the internal concave surface and being deformable between a compressed state and an uncompressed state; and
 the hollow bulge of the second layer being located at a position corresponding to the internal or external metatarsus portion, the second layer further comprising another hollow bulge, which is located at at least one of the internal foot-arch portion, the external foot-arch portion, the heel portion, the internal toe portion, and the external toe portion and has an external convex surface integrally protruding from a top side of the main body, an internal concave surface integrally recessed from a bottom side of the main body and corresponding to the external convex surface, and a sealed chamber jointly defined by the internal concave surface and the top side of the first layer.   
     
     
         28 . The shoe pad as defined in  claim 27  further comprising at least one elastic material, which is located in the sealed chamber of the hollow bulge of the second layer corresponding to at least one of the internal toe portion, the external toe portion, the internal metatarsus portion, the external metatarsus portion, the internal foot-arch portion, the external foot-arch portion, and the heel portion. 
     
     
         29 . The shoe pad as defined in  claim 27  further comprising at least one shock-absorbing material, which is located in the sealed chamber of the hollow bulge of the second layer corresponding to at least one of the internal toe portion, the external toe portion, the internal metatarsus portion, the external metatarsus portion, the internal foot-arch portion, the external foot-arch portion, and the heel portion. 
     
     
         30 . A multi-function shoe pad comprising a main body, which can allow a user's human sole to tread and structurally corresponds to respective portions of the user's human sole to be composed of a foot arch portion, a heel portion located behind the foot arch portion, a toe portion located before the foot arch portion and corresponding to the user's first, second, third, fourth, and fifth toes, and a metatarsus portion located between the foot arch portion and the toe portion, the foot arch portion having an internal foot-arch portion and an external foot-arch portion, the toe portion having an internal toe portion corresponding to the first toe and an external toe portion corresponding to the other toes of the user's foot, the metatarsus portion having an internal metatarsus portion and an external metatarsus portion; wherein the shoe pad is characterized in that the main body comprises:
 a first layer having a hollow bulge, which has an external convex surface integrally protruding from the first layer, an internal concave surface recessed from a bottom side of the first layer and corresponding to the external convex surface, and a chamber formed defined by the internal concave surface, the chamber being deformable between a compressed state and an uncompressed state;   a second layer mounted onto the first layer and having a hollow bulge, which has an external convex surface integrally protruding from the second layer, an internal concave surface recessed from a top side of the second layer and corresponding to the external convex surface, and a sealed chamber jointly defined by the internal concave surface and the top side of the first layer; and   at least two support members mounted below the hollow bulges of the first and second layers and having a convex wall and an air space located at an internal side of the convex wall.   
     
     
         31 . The shoe pad as defined in  claim 30 , wherein the at least two support members each comprise a bottom wall connected with the convex wall in one piece, the bottom wall and the convex wall jointly defining the air space. 
     
     
         32 . The shoe pad as defined in  claim 30  further comprising at least one more support member, wherein the first layer further comprises another hollow bulge having an external convex surface integrally protruding from a top side of the main body, an internal concave surface integrally recessed from a bottom side of the main body and corresponding to the external convex surface, and a chamber defined by the internal concave surface and being deformable between a compressed state and an uncompressed state, a coupling piece being integrally connected between the two support members below the two hollow bulges mounted to the first layer. 
     
     
         33 . The shoe pad as defined in  claim 30  further comprising at least one more support member, wherein the second layer further comprises another hollow bulge having an external convex surface integrally protruding from a top side of the main body, an internal concave surface integrally recessed from a bottom side of the main body and corresponding to the external convex surface, and a sealed chamber jointly defined by the internal concave surface and the top side of the first layer, a coupling piece being integrally connected between the two support members below the two hollow bulges mounted to the second layer. 
     
     
         34 . A multi-function shoe pad comprising a main body, which can allow a user's human sole to tread and structurally corresponds to respective portions of the user's human sole to be composed of a foot arch portion, a heel portion located behind the foot arch portion, a toe portion located before the foot arch portion and corresponding to the user's first, second, third, fourth, and fifth toes, and a metatarsus portion located between the foot arch portion and the toe portion, the foot arch portion having an internal foot-arch portion and an external foot-arch portion, the toe portion having an internal toe portion corresponding to the first toe and an external toe portion corresponding to the other toes of the user's foot, the metatarsus portion having an internal metatarsus portion and an external metatarsus portion; wherein the shoe pad is characterized in that the main body comprises:
 a first air groove formed at the bottom side of the main body and not located at the internal foot-arch portion, the external foot-arch portion, the heel portion, the internal toe portion, the external toe portion, the internal metatarsus portion, or the external metatarsus portion, the first air groove having two ends each extending to a peripheral edge of the main body, the first air groove having a first extended part and a second extended part, the first extended part extending longitudinally along the midst of the internal and external toe portions from a front peripheral edge of the main body adjacent to the toe portion toward the heel portion, the second extended part communicating with the first extended part and transversally extending to an internal peripheral edge or an external peripheral edge of the main body or both adjacent to the heel portion, the first extended part having an aperture recessed inwardly and located at one of the front peripheral edge adjacent to the toe portion and of an internal or external peripheral edge of the main body adjacent to the heel portion;   a second air groove communicating with the first air groove and transversally extending along the midst of the toe portion and the metatarsus portion from the external peripheral edge of the main body adjacent to the external toe portion to the internal peripheral edge of the main body adjacent to the internal toe portion, the second air groove having an aperture recessed inwardly and formed at the external or internal peripheral edge of the main body adjacent to the midst of the toe portion and the metatarsus portion;   a third air groove communicating with the first air groove and transversally extending along the midst of the metatarsus portion and the foot arch portion from the external peripheral edge of the main body to the internal peripheral edge of the main body, the third air groove having an aperture recessed inwardly and formed at the external or internal peripheral edge of the main body adjacent to the midst of the metatarsus portion and the foot arch portion; and   a fourth air groove communicating with the third air groove and longitudinally extending along the profile of the internal foot-arch portion from the third air groove toward the heel portion to the second extended part of the first air groove.   
     
     
         35 . A multi-function shoe pad comprising a main body, which can allow a user's human sole to tread and structurally corresponds to respective portions of the user's human sole to be composed of a foot arch portion, a heel portion located behind the foot arch portion, a toe portion located before the foot arch portion and corresponding to the user's first, second, third, fourth, and fifth toes, and a metatarsus portion located between the foot arch portion and the toe portion, the foot arch portion having an internal foot-arch portion and an external foot-arch portion, the toe portion having an internal toe portion corresponding to the first toe and an external toe portion corresponding to the other toes of the user's foot, the metatarsus portion having an internal metatarsus portion and an external metatarsus portion; wherein the shoe pad is characterized in that the main body comprises:
 a first layer; and   a second layer mounted onto the first layer and having a hollow bulge, which has an external convex surface integrally protruding from the second layer, an internal concave surface recessed from a top side of the second layer and corresponding to the external convex surface, and a sealed chamber jointly defined by the internal concave surface and the top side of the first layer.   
     
     
         36 . The shoe pad as defined in  claim 35  further comprising at least one support member, which is mounted inside the sealed chamber and each has a convex wall and an air space located at an internal side of the convex wall.