A sole, shoe

Abstract

The invention provides a shoe sole and shoe for improving the propulsion force during the push-off phase, the shoe sole comprising: a midsole provided with a rearward inclined support column in a region corresponding to the metatarsal joint of the foot, the support column being connected to the upper and lower portions of the midsole only at the upper and lower ends; and a rigid plate arranged in the midsole at least in the forefoot region and located at the root of the support column. The shoe sole can maintain a good rolling shape and improve the propulsion force during the push-off phase.

Description

Technical Field

[0001] This invention relates to the field of shoe sole technology, specifically to a shoe sole and shoe that improves push-off propulsion. Background Technology

[0002] Current shoe soles with rigid components like carbon fiber plates restrict the flexion of the metatarsophalangeal joint area upon ground contact, maintaining a rolling shape to improve overall running efficiency. However, during the push-off phase, maintaining this rolling shape reduces the degree of flexion in the metatarsophalangeal joint area, resulting in a larger downward angle of the lower leg. This reduces the horizontal component of the ground force obtained by the foot through the sole, which is actually detrimental to increasing propulsion during the push-off phase. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned defects or problems in the prior art and to provide a sole and shoe that improves the propulsion force during the push-off phase. The sole can maintain a good rolling shape and improve the propulsion force during the push-off phase.

[0004] To achieve the above objectives, the following technical solution is adopted: In at least one embodiment, a shoe sole for improving push-off propulsion is disclosed, the shoe sole comprising: a midsole having a backward-sloping support post at least in the region corresponding to the metatarsal joint of the foot, the support post being connected to the upper and lower bottom of the midsole only at its upper and lower ends; and a rigid plate located at the base of the support post at least in the forefoot region of the midsole.

[0005] Compared to existing technologies that simply use rigid plates like carbon fiber plates, the inventive concept of the above design lies in constructing a local deformation structure in the area corresponding to the metatarsal joints of the foot. This structure allows for directional compression and relative rotation relative to the rigid plates, while retaining the overall rolling shape and underside stability provided by the rigid plates. This ensures that the sole maintains good longitudinal stiffness overall, while allowing for local deformation at the metatarsal joints during the push-off phase, distinct from the overall bending of the sole. Thus, the synchronous deformation of the upper and lower forefoot caused by rigid plates in existing soles is transformed into an asymmetrical deformation pattern where the upper part of the rigid plate is more easily deformed, while the lower part remains relatively stable. This balances the rolling efficiency of the sole with the propulsion requirements during the push-off phase.

[0006] Specifically, the midsole features a backward-sloping support column at least corresponding to the area of ​​the metatarsophalangeal joint, with the support column only connected to the upper and lower bottom of the midsole at its top and bottom ends. Because the front and rear sides of the support column are not continuously connected to the surrounding midsole, it has a relatively independent deformation space when bearing plantar loads. Simultaneously, the backward-sloping design of the support column allows it to compress and tilt backward in a predetermined direction under pressure. When the support column tilts backward, its upper end displaces downward and backward relative to its lower end, causing significant compression, displacement, and relative rotation of the upper bottom of the midsole relative to the lower bottom. This results in a decrease in the effective thickness of the midsole at the location corresponding to the metatarsophalangeal joint as the load increases, forming a locally dynamic thinning area that varies with the push-off load. Simultaneously, when the foot applies downward force, the rigid plate provides a relatively stable lower reaction surface for the support column, concentrating the main deformation of the support column under pressure above the rigid plate and preventing the midsole above and below the support column from collapsing synchronously with the load. Therefore, the lower stabilizing structure maintained by the rigid plate and the upper directional deformation structure formed by the backward-leaning support column work together to ensure that the sole will not deform randomly due to excessive softness in the local structure, and can obtain sufficient compression and rotation stroke in the corresponding area of ​​the metatarsal joint of the foot.

[0007] Based on the above structural design, after the forefoot push-off phase of running, the plantar load is applied to the rearward-leaning support column via the upper bottom of the midsole. The support column is compressed and tilts backward, causing localized thinning of the midsole above the rigid plate and rotation relative to the rigid plate. This localized thinning and relative rotation provide greater flexibility for the flexion of the metatarsal joints, reducing the restriction on forefoot flexion by the rigid plate and the overall longitudinal stiffness of the sole. During running, the lower leg can have a larger downward angle to increase the horizontal component of the force, thereby enhancing the forward propulsion during the push-off phase. Furthermore, as the plantar load gradually decreases in the later stages of push-off, the compressed and rearward-leaning support column can recover to its initial state through its own elasticity and the recovery action of the surrounding midsole material. This pushes the upper bottom of the midsole back to its original position relative to the rigid plate and releases the elastic energy stored during compression. Since this recovery process can occur before the forefoot has fully left the ground, the recovery action of the support column can continue to be transmitted to the foot through the contact between the sole and the ground, thus providing continuous rebound for push-off.

[0008] In the sole for improving push-off propulsion disclosed in at least one embodiment, preferably, the support post extends along the left-right direction of the sole and occupies at least the middle portion of the sole in the left-right direction at its location.

[0009] In the above design, since the support column occupies the middle part in the left-right direction of the sole, the load applied by the foot to the middle of the forefoot can act on a wider range of support columns, so that the area corresponding to the metatarsal joint of the foot forms a relatively continuous compression and rotation area along the left-right direction of the sole, which is conducive to improving the stability of local bending deformation.

[0010] In the sole of the shoe disclosed in at least one embodiment for improving push-off propulsion, preferably, a plurality of support columns are arranged along the front-to-back direction of the sole.

[0011] In the above design, since multiple support columns bear the foot load at different positions along the front and back direction of the sole, the load and deformation can be shared by the support columns at different positions, which is conducive to expanding the range of local dynamic thinning and bending, and making the force process of the forefoot smoother.

[0012] In the sole of the shoe disclosed in at least one embodiment for improving push-off propulsion, more preferably, each of the said support columns is arranged from the forefoot region to the arch region at least along the forefoot direction of the sole.

[0013] In the above design, since the compressible and rotatable structure formed by the support column covers the load transition area between the forefoot and the arch, the plantar load can be gradually transferred along the front-to-back direction of the sole, which is conducive to a smooth transition between forefoot directional deformation and arch support.

[0014] In the sole of the shoe disclosed in at least one embodiment for improving push-off propulsion, more preferably, the height dimension of the support column in the vertical direction of the sole increases first and then decreases from front to back.

[0015] In the above design, since the height of the support column increases from front to back and then decreases, the sole can form a relatively large local deformation capacity in the main force area in the middle, and gradually reduce the amount of deformation to the front and back sides, so that the deformable area and the adjacent midsole area form a smooth transition, avoiding abrupt changes in midsole thickness or local stiffness that would cause obvious stress concentration, while also helping to guide the sole to bend in the predetermined area.

[0016] In the sole of the shoe disclosed in at least one embodiment for improving push-off propulsion, more preferably, the height dimension of the support column in the vertical direction of the sole is maximized in the region corresponding to the metatarsal joint of the foot.

[0017] In the above design, since the support column corresponding to the metatarsal joint of the foot has the largest height dimension, this area can obtain a large compression, displacement and tilting stroke. This allows the main deformation capacity of the sole to be concentrated in the area corresponding to the metatarsal joint of the foot that needs to bend the most during the push-off process. This more effectively reduces the restriction of rigid plates and the overall stiffness of the sole on the bending of the metatarsal joint of the foot, while avoiding unnecessary excessive deformation in other areas of the sole.

[0018] In the sole for improving push-off propulsion disclosed in at least one embodiment, more preferably, the midsole forms a relief groove extending in the left-right direction of the sole at the front and rear positions of the support post, and the width of the relief groove in the front-back direction of the sole first increases and then decreases from front to back.

[0019] In the above design, the relief grooves are formed at the front and rear positions of the support column. This reduces the resistance of the midsole material on both sides of the support column to compression and tilting, providing relief space for the support column to tilt backward and for the upper bottom of the midsole to shift and rotate relative to the lower bottom of the midsole. The relief grooves extend along the left-right direction of the sole, allowing the support column to achieve relatively consistent deformation conditions within its lateral extension range. The width of the relief grooves in the front-back direction of the sole first increases and then decreases from front to back, ensuring that the relief space provided at each position matches the required deformation degree in different areas of the sole. This provides greater compression and tilting space in the main force application areas, while gradually decreasing the relief amount on the front and rear sides, thereby guiding the sole to form a gradual and controlled local deformation and avoiding interference between the support column and the surrounding midsole.

[0020] In the sole of the shoe disclosed in at least one embodiment for improving push-off propulsion, more preferably, the rigid plate is disposed across the base of each of the support columns in the fore-and-aft direction of the sole.

[0021] In the above design, a single rigid plate spans the base of multiple support columns along the front-to-back direction of the sole. This provides a continuous and stable underside support base for each support column and distributes the foot load among them, reducing local stress concentration at the base of any single support column. The rigid plate also restricts disordered compression of the midsole beneath the support columns, ensuring that the tilting and recovery of the support columns are based on a relatively stable underside profile. This improves the coordination of deformation between different support columns, allowing the sole to maintain its overall rolling shape while forming continuous local deformation zones.

[0022] In the sole for improving push-off propulsion disclosed in at least one embodiment, more preferably, the support post extends along the left-right direction of the sole to the sidewall of the midsole, and the sidewall of the midsole is recessed inward at least at the position corresponding to the support post to form a groove extending along the up-down direction of the sole.

[0023] In the above design, the support column extends along the left-right direction of the sole to the sidewall of the midsole, allowing it to span the main width of the sole and further expanding its load-bearing and deformation range. The midsole sidewall is recessed inward at the location corresponding to the support column, forming a groove. This reduces the constraint of the sidewall material on the end of the support column and the deformation of the midsole around it, providing lateral clearance space for compression, backward tilting, and relative displacement of adjacent midsole areas.

[0024] In the sole for improving push-off propulsion disclosed in at least one embodiment, preferably, the rigid plate is disposed on the upper surface of the lower bottom of the midsole; the base of the support column is provided with a through groove for the rigid plate to pass through.

[0025] In the above design, the rigid plate is not placed inside the lower bottom but directly on the upper surface of the lower bottom. This allows the rigid plate to connect with the clearance groove area, reducing the connection area between the midsole and the rigid plate. The rigid plate also imposes less constraint on the bending of the midsole, thus better decoupling the deformation of the upper bottom from the rolling shape of the lower bottom, preventing mutual interference. Simultaneously, the rigid plate passes through the through-groove at the base of the support column, allowing it to be positioned and supported close to the column. This facilitates the stable transfer of the load borne by the support column to the lower bottom, while also allowing the midsole above the rigid plate to retain space for compression, displacement, and rotation relative to the lower midsole.

[0026] In the shoe sole for improving push-off propulsion disclosed in at least one embodiment, preferably, the hardness of the material used for at least the upper bottom and the support post of the midsole is less than the hardness of the material of the lower bottom corresponding to the area where the support post is located.

[0027] In the above design, since the upper bottom and support column of the midsole have lower material hardness relative to the lower bottom of the corresponding area, the upper bottom and support column can preferentially undergo compression and relative displacement when under load, while the lower bottom forms a more stable support and reaction base. This is conducive to increasing the compression, displacement and relative rotation of the upper bottom relative to the lower bottom, and improving the controllability of local dynamic thinning and bending.

[0028] In at least one embodiment, a shoe is disclosed, the shoe including an upper attached to a sole for improving push-off propulsion as described in any one of claims 1-9.

[0029] In the above design, since the upper is attached to the sole to improve the propulsion force, the foot can be stably kept above the sole, and the load on the sole can be transferred to the area where the support column and rigid plate of the sole are located. This helps to maintain the rolling shape of the sole and improve the propulsion force during wearing and running. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments are briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is an exploded view of the shoe sole structure according to an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the support pillars in the midsole and the upper bottom; Figure 3This is a schematic diagram of the shoe sole structure according to an embodiment of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the shoe sole structure according to an embodiment of the present invention. Figure 2 .

[0032] Explanation of key figure labels: Midsole 100; Forefoot area 101; Arch area 102; Heel area 103; Metatarsal joint area 104; Upper bottom 110; Middle bottom sidewall 111; Groove 112; Lower bottom 120; Support column 130; Through groove 131; Relief groove 140; Rigid plate 200. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are preferred embodiments of the present invention and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and accompanying drawings of this invention is for distinguishing different objects and not for describing a specific order.

[0035] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this invention, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of this invention.

[0036] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this invention should be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection by other means or components.

[0037] In the claims, description and accompanying drawings of this invention, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0038] Example Reference Figure 1 This embodiment relates to a shoe sole that improves push-off propulsion.

[0039] The sole includes a midsole 100 and a rigid plate 200 disposed in the midsole 100.

[0040] Reference Figure 3 The midsole 100 forms a forefoot region 101, an arch region 102, and a heel region 103 along the front-to-back direction of the sole. The forefoot region 101 and the arch region 102 include a metatarsal joint region 104 corresponding to the metatarsal joints of the foot. The midsole 100 also includes an upper sole 110 and a lower sole 120 located below the upper sole 110 along the vertical direction of the sole. The upper sole 110 is used to receive loads transmitted from the sole of the foot, and the lower sole 120 forms the support base on the lower side of the sole.

[0041] It is easy to understand that the sole may also include an outsole or other accessories, which are existing technologies and will not be elaborated on here.

[0042] Reference Figure 1 and Figure 2 A support column 130 is provided between the upper sole 110 and the lower sole 120. The support column 130 is distributed at least in the metatarsal joint area 104 and is inclined backward in the fore-aft direction of the sole. The upper end of the support column 130 is connected to the upper sole 110, and the lower end of the support column 130 is connected to the lower sole 120. The front and rear sides of the support column 130, except for the upper and lower ends, are spaced apart from the surrounding midsole 100 material, so that the front and rear sides of the support column 130 retain space for compression deformation. Thus, the load between the upper sole 110 and the lower sole 120 can be transferred through the support column 130, and the support column 130 can be compressed and tilted within the reserved space.

[0043] Reference Figure 2 The support column 130 extends along the left-right direction of the sole and occupies at least the middle part of its position in the left-right direction of the sole, so that the load applied to the middle of the sole can be transmitted to the support column 130 within a certain lateral range. In a preferred arrangement, multiple support columns 130 are spaced apart along the front-back direction of the sole, and the multiple support columns 130 extend at least from the forefoot region 101 to the arch region 102, thereby forming a continuously distributed deformable structure between the forefoot region 101 and the arch region 102.

[0044] Reference Figure 3 and Figure 4Viewed from front to back along the arrangement of the multiple support pillars 130, the height of each support pillar 130 in the vertical direction of the sole first increases and then decreases. Among them, the support pillar 130 located in the metatarsal joint region 104 has a larger height, and preferably has the largest height. The above-mentioned change in the height of the support pillars 130 makes the deformable space between the upper bottom 110 and the lower bottom 120 relatively large in the metatarsal joint region 104, and gradually decreases towards the front and back sides of this region, so that the local deformation capacity of the midsole 100 transitions smoothly along the front and back direction of the sole.

[0045] Reference Figure 1 The midsole 100 forms relief grooves 140 at the front and rear positions of the support pillars 130, and the relief grooves 140 extend along the left and right direction of the sole. For multiple support pillars 130 arranged in the front and rear direction, adjacent support pillars 130 are separated from each other by corresponding relief grooves 140. Support pillars 130 located at the front and rear ends can also form corresponding relief grooves 140 on their side facing the adjacent midsole 100 area. The relief grooves 140 constitute the deformation space required when the support pillars 130 are compressed and tilted backward, and allow the upper bottom 110 to produce downward and backward displacement and relative rotation relative to the lower bottom 120. Viewed from the front to the rear direction along the arrangement of the multiple relief grooves 140, the width of each relief groove 140 in the front and rear direction of the sole first increases and then decreases, so that there is a large relief space near the metatarsal joint area 104, and the relief space on its front and rear sides gradually decreases.

[0046] Reference Figure 1 The support post 130 can also extend along the left-right direction of the sole to the sidewall of the midsole 100. The midsole sidewall 111 is recessed inward towards the sole at the position corresponding to the support post 130, forming a groove 112 extending along the up-down direction of the sole. This groove 112 is located on the sidewall surface corresponding to the lateral end of the support post 130, which allows the location of the support post 130 to be identified on the outside of the sole, and reduces the constraint of the sidewall material on the deformation of the end of the support post 130 and the adjacent midsole 100 material, so that the support post 130 obtains more coordinated compression and tilting conditions within the lateral extension range.

[0047] Reference Figure 1 The rigid plate 200 is disposed at least in the forefoot region 101 of the midsole 100 and located below the base of the support post 130. The base of the support post 130 is the portion of its lower end adjacent to the bottom sole 120, and the rigid plate 200 forms a stable support structure below this portion. In embodiments with multiple support posts 130, the rigid plate 200 extends along the forefoot direction of the sole and spans the base of multiple support posts 130, thereby providing a continuous underside support base for the multiple support posts 130 and distributing the loads acting on different support posts 130 in the forefoot direction through the rigid plate 200.

[0048] Reference Figure 2 and Figure 4 In one specific arrangement, a rigid plate 200 is disposed on the upper surface of the lower bottom 120. A through-groove 131 is formed at the base of the support column 130 where it intersects with the rigid plate 200. The shape of the through-groove 131 is adapted to the shape of the corresponding position on the rigid plate 200. The rigid plate 200 passes through the through-groove 131 through the base of the support column 130, and multiple support columns 130 are arranged across the front-to-back direction of the sole, allowing the rigid plate 200 to be positioned close to the lower end of the support columns 130. The rigid plate 200 is supported by the lower bottom 120, and the load borne by the support column 130 can be transferred through its base to the rigid plate 200 and the lower bottom 120. Simultaneously, a deformable area consisting of the support column 130 and the clearance groove 140 is still retained above the rigid plate 200.

[0049] The clearance groove 140, the through groove 131, and the groove 112 on the side wall are formed at different locations. The clearance groove 140 is located on the front and rear sides of the support column 130, providing space for the tilting of the support column 130 along the front-rear direction of the sole and the relative displacement of the upper bottom 110; the through groove 131 is located at the root of the support column 130, allowing the rigid plate 200 to pass through; the groove 112 on the side wall is located on the outer surface of the midsole 100 corresponding to the lateral end of the support column 130, reducing the restriction of the midsole side wall 111 on local deformation. The above structures cooperate to maintain the load transmission relationship between the upper and lower ends of the support column 130, and to provide clearance conditions on the front and rear sides and lateral ends that are adapted to the predetermined deformation direction.

[0050] In a preferred material configuration, the hardness of the materials used for the upper bottom 110 and the support column 130 is lower than the hardness of the material in the lower bottom 120 corresponding to the area where the support column 130 is located. Because the upper bottom 110 and the support column 130 have relatively lower material hardness, they can preferentially undergo compression and displacement under load; while the lower bottom 120, due to its relatively higher material hardness, can maintain a more stable support state below the rigid plate 200. This material configuration, together with the backward-leaning shape of the support column 130 and the lower structure of the rigid plate 200, concentrates the main deformation above the rigid plate 200.

[0051] The upper sole 110, support pillars 130, rigid plate 200, and lower sole 120 form a mutually cooperating load-bearing structure along the vertical direction of the sole. After the upper sole 110 receives the load of the foot, it transfers the load to the support pillars 130; the support pillars 130 transfer the load to the rigid plate 200 and the lower sole 120 through their lower ends; the rigid plate 200 supports the base of the multiple support pillars 130 and restricts disordered compression of the midsole 100 below them. The relief grooves 140 on the front and rear sides of the support pillars 130 and the grooves 112 on the sidewalls 111 of the midsole provide deformation space for the support pillars 130, so that a local deformation area is formed above the rigid plate 200 that can be directionally compressed and rotated relative to the structure below.

[0052] This embodiment also relates to a shoe, which includes an upper and the aforementioned sole. The upper is attached to the sole to hold the wearer's foot above the sole and to transfer foot load to the upper sole 110. The sole constituting the shoe has at least an upper sole 110, a lower sole 120, a rearward-sloping support post 130, and a rigid plate 200 located below the base of the support post 130. Depending on the specific configuration of the sole, one or more of the aforementioned multiple support posts 130, relief grooves 140, sidewall grooves 112, through grooves 131, and material hardness configurations may also be used.

[0053] When the wearer enters the forefoot loading and push-off state during running, the plantar load acts on the upper footplate 110 and is transmitted from the upper footplate 110 to the metatarsophalangeal joint region 104 and the adjacent support column 130. Because the support column 130 is tilted backward and has clearance on its front and rear sides, it compresses and tilts backward under load. The upper end of the support column 130 deforms and displaces downward and backward relative to its lower end, thereby causing the upper footplate 110 to displace downward and backward and rotate relative to the rigid plate 200 and the lower footplate 120.

[0054] When the support column 130 is compressed and tilted, the relief grooves 140 on its front and rear sides gradually accommodate the displacement generated by the support column 130 and the adjacent midsole 100 material, while the grooves 112 on the sidewalls allow corresponding deformation of the lateral ends of the support column 130 and the corresponding sidewall areas. The support column 130 located in the metatarsal joint region 104 has a large height, and the relief grooves 140 at its front and rear positions also have a large front and rear width, thus this region can form a large compression, displacement, and relative rotation stroke. The support column 130 and relief grooves 140 located on its front and rear sides have gradually decreasing height and width, so that the local deformation transitions smoothly to the adjacent midsole 100 region.

[0055] During the aforementioned loading process, the rigid plate 200 is supported by the lower bottom 120 and forms a relatively stable reaction base on the lower side of the support column 130. This allows the upper bottom 110 above the support column 130 to undergo significant deformation relative to the rigid plate 200, while the lower bottom 120 below the rigid plate 200 remains relatively stable. As the upper bottom 110 displaces downwards and backwards, the local distance between the upper bottom 110 and the rigid plate 200 decreases, and the metatarsal joint region 104 forms a locally thinned state that varies with the load, providing corresponding space for the bending and rotation of the forefoot during the push-off process.

[0056] During the final stage of push-off, as the plantar load gradually decreases while the forefoot remains in contact with the ground, the compressed and backward-tilting support column 130 recovers to its initial state due to its own elasticity and the restoring effect of the adjacent midsole material 100. During this recovery process, the support column 130 pushes the upper bottom 110 upward and forward relative to the rigid plate 200 and the lower bottom 120, gradually restoring the relief groove 140 to its pre-load state. The support column 130 releases the elastic energy stored during compression, while the rigid plate 200 and the lower bottom 120 continue to provide stable underside support, allowing the aforementioned restoring effect to be transmitted to the foot via the forefoot area 101, which is still in contact with the ground, to facilitate push-off and lift-off.

[0057] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this invention, but does not constitute a limitation on the scope of protection of this invention. Modifications, equivalent substitutions, or other improvements to the embodiments of this invention or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this invention or the foregoing embodiments, in conjunction with common knowledge, general technical knowledge, and / or existing technology, should all be included within the scope of protection of this invention.

Claims

1. A shoe sole that improves push-off propulsion, characterized in that, The midsole (100) has a backward-sloping support column (130) at least in the area corresponding to the metatarsal joint of the foot, the support column (130) being connected only at its upper and lower ends to the upper bottom (110) and lower bottom (120) of the midsole (100); The midsole (100) has a rigid plate (200) located at the base of the support post (130) at least in its forefoot area (101).

2. The sole for improving push-off propulsion as described in claim 1, characterized in that, The support column (130) extends along the left and right direction of the sole and occupies at least the middle part of the left and right direction of the sole at its location.

3. The sole for improving push-off propulsion as described in claim 1 or 2, characterized in that, The support columns (130) are arranged in multiple ways along the front and back of the shoe sole.

4. The sole for improving push-off propulsion as described in claim 3, characterized in that, Each of the aforementioned support columns (130) is arranged at least along the front-to-back direction of the sole from the forefoot region (101) to the arch region (102).

5. The sole for improving push-off propulsion as described in claim 3, characterized in that, The height of the support column (130) in the vertical direction of the sole increases from front to back and then decreases.

6. The sole for improving push-off propulsion as described in claim 5, characterized in that, The height dimension of the support column (130) in the vertical direction of the sole is largest in the area corresponding to the metatarsal joint of the foot.

7. The sole for improving push-off propulsion as described in claim 3, characterized in that, The midsole (100) forms a relief groove (140) extending in the left-right direction of the sole at the front and rear positions of the support column (130). The width of the relief groove (140) in the front-back direction of the sole increases first and then decreases from front to back.

8. The sole for improving push-off propulsion as described in claim 3, characterized in that, The rigid plate (200) is mounted across the base of each of the support columns (130) along the front-back direction of the shoe sole.

9. The sole for improving push-off propulsion as described in claim 2, characterized in that, The support post (130) extends along the left-right direction of the sole to the side wall of the midsole (100), and the side wall of the midsole (100) is recessed inward at least at the position corresponding to the support post (130) to form a groove (112) extending along the up-down direction of the sole.

10. The sole for improving push-off propulsion as described in claim 1, characterized in that, The rigid plate (200) is located on the upper surface of the lower bottom (120) of the middle bottom (100); the root of the support column (130) is provided with a through groove (131) for the rigid plate (200) to pass through.

11. The sole for improving push-off propulsion as described in claim 1, characterized in that, The hardness of the material used for the midsole (100) at least its upper bottom (110) and support column (130) is less than the hardness of the material of its lower bottom (120) corresponding to the area where the support column (130) is located.

12. A shoe comprising an upper, characterized in that, The upper is attached to the sole as described in any one of claims 1-9 to enhance push-off propulsion.

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