SHOE SOLE FOR CORRECTING GAIT

Abstract

Disclosed herein is a shoe sole having functions of correcting a gait, of absorbing shocks, and of mitigating partial side wear of the sole. The shoe sole according to the present invention includes a main sole, which has a front foot part provided with a soft front midsole and a front outsole, and has a rear foot part provided with a hard rear midsole. The shoe sole further includes a subsidiary sole. The subsidiary sole includes an elastic member, a rear outsole, which is coupled to the lower end of the elastic member, and a connection member, which is provided on the upper end of the elastic member. The connection member has an internal threaded part, which couples the connection member to the rear midsole, and stop protrusions, which are provided around the internal threaded part. The shoe sole further includes a coupling support, which is provided under the rear midsole. Stop holes corresponding to respective stop protrusions are formed in the coupling support. A through hole is formed in the coupling support at the center of the stop holes, so that a bolt can be secured into the internal threaded part through the through hole. Therefore, the orientation of the subsidiary sole with respect to the main sole is changeable, or the subsidiary sole is replaceable with a new one, depending on the characteristics of the gait of a user.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a side view showing a spring athletic shoe according to a conventional technique;

FIG. 2 is a schematic view of a shoe having a shoe sole for correcting a gait, according to a first embodiment of the present invention;

FIG. 3 is an exploded perspective view showing an important part of the shoe sole of FIG. 2;

FIG. 4 is an exploded perspective view of a subsidiary sole of the shoe sole of FIG. 2;

FIG. 5 is a plan view showing the distribution of hardness of a rear outsole, when a conical coil spring is used as an elastic member, according to the present invention;

FIG. 6 is a view showing a subsidiary sole of a shoe sole, according to a second embodiment of the present invention;

FIG. 7 is a plan view of a subsidiary sole of a shoe sole, according to a third embodiment of the present invention;

FIG. 8 is a side view of the subsidiary sole according to the third embodiment of the present invention;

FIG. 9 is a plan view showing the distribution of hardness of the subsidiary sole according to the third embodiment of the present invention;

FIG. 10 is views illustrating the orientation of the subsidiary sole for a user having a neutral gait according to the present invention;

FIG. 11 is views illustrating the orientation of the subsidiary sole for a user having a pronation gait according to the present invention; and

FIG. 12 is views illustrating the orientation of the subsidiary sole for a user having a supination gait according to the present invention.

Claims

1. A shoe sole for correcting a gait, comprising: a main sole, comprising: a front foot part, having a front midsole made of soft material, and a front outsole provided under a lower surface of the front midsole; and a rear foot part, having a rear midsole made of hard material and coupled to an upper surface of the front midsole;a subsidiary sole, comprising: an elastic member; a rear outsole coupled to a lower end of the elastic member and in contact with ground; and a connection member provided on an upper end of the elastic member, the connection member having an internal threaded part to couple the connection member to a lower surface of the rear midsole, and a plurality of stop protrusions provided around the internal threaded part; anda coupling support provided under the lower surface of the rear midsole, with a plurality of stop holes formed in the coupling support and corresponding to the respective stop protrusions, and a through hole formed in the coupling support at a center of the stop holes and extending to an upper surface of the rear midsole so that a bolt is fastened into the internal threaded part through the through hole, whereinan orientation of the subsidiary sole with respect to the main sole is changeable, or the subsidiary sole is replaceable with another subsidiary sole depending on characteristics of the gait of a user.

2. The shoe sole as set forth in claim 1, wherein the elastic member comprises a conical coil spring.

3. The shoe sole as set forth in claim 1, wherein the elastic member is formed by injection molding using different materials such that the elastic member is sectioned into four sections having different characteristics.

4. The shoe sole as set forth in claim 2, wherein the connection member is integrally coupled to an upper end of the conical coil spring through an injection molding process.

5. The shoe sole as set forth in claim 3, wherein the connection member comprises four arms provided on an outer edge of a lower end of the connection member at positions spaced apart from each other by angular intervals of 90°, such that, when the elastic member is formed by injection molding using the different materials, a coupling force between the connection member and the elastic member is increased by the four arms.

6. The shoe sole as set forth in claim 1, wherein the subsidiary sole comprises a protective wall provided on the rear outsole to surround the elastic member.

7. The shoe sole as set forth in claim 1, wherein the connection member comprises: a main nut forming the internal threaded part; anda wire nut provided in the main nut and coupled to the bolt to prevent the bolt from being loosened.

8. The shoe sole as set forth in claim 2, wherein the conical coil spring is made of a wire, which has a cross-section having one shape selected from among a rectangular shape, an octagonal shape, a circular shape and a tube shape.

9. The shoe sole as set forth in claim 2, wherein the wire constituting the conical coil spring is made of metal or a compound substance containing carbon fiber and glass fiber.

10. The shoe sole as set forth in claim 1, wherein the rear midsole is made of material, in which 10 to 15 weight parts of glass fiber are mixed with 100 weight parts of nylon 66 resin, and is injection molded at a high temperature.

11. The shoe sole as set forth in claim 1, further comprising: a reinforcing member provided in the rear outsole and manufactured by weaving into a mesh shape.

12. The shoe sole as set forth in claim 2, wherein the subsidiary sole comprises a protective wall provided on the rear outsole to surround the elastic member.

13. The shoe sole as set forth in claim 4, wherein the subsidiary sole comprises a protective wall provided on the rear outsole to surround the elastic member.

14. The shoe sole as set forth in claim 8, wherein the wire constituting the conical coil spring is made of metal or a compound substance containing carbon fiber and glass fiber.

15. The shoe sole as set forth in claim 2, further comprising: a reinforcing member provided in the rear outsole and manufactured by weaving into a mesh shape.

16. The shoe sole as set forth in claim 4, further comprising: a reinforcing member provided in the rear outsole and manufactured by weaving into a mesh shape.

17. The shoe sole as set forth in claim 7, further comprising: a reinforcing member provided in the rear outsole and manufactured by weaving into a mesh shape.

18. The shoe sole as set forth in claim 8, further comprising: a reinforcing member provided in the rear outsole and manufactured by weaving into a mesh shape.