A sole with multi-angle bending unit, shoe

Abstract

The application provides a sole with multi-angle bending units, and a shoe. The sole comprises an upper sole, a lower sole and a support layer between the upper sole and the lower sole. The support layer is provided with a plurality of bending units corresponding to at least part of the forefoot region, the midfoot region and the heel region along the length direction of the sole. The bending units extend along the width direction of the sole and along the thickness direction of the sole to connect the upper sole and the lower sole. The bending units comprise a first extension section and a second extension section. The first extension section is connected with the second extension section, and the connection part of the two extension sections is in a bending shape. The first included angle and the second included angle in the forefoot region, the heel region and the midfoot region adopt different relationships. The effective support cross-sectional area of the bending units of at least part of the heel region is greater than the effective support cross-sectional area of the bending units of part of the forefoot region, so as to facilitate the formation of matching bending response and support response of the sole in the process of the forefoot lifting, the heel landing and the midfoot transition.

Description

Technical Field

[0001] This invention relates to the field of shoe sole technology, specifically to a shoe sole and shoe with multi-angle bending units. Background Technology

[0002] During running, jumping, or walking, the sole of an athletic shoe needs to bear different mechanical forces at different paces. Taking the continuous process from heel strike to forefoot push-off as an example, the heel area typically bears the impact load from the ground first, the midfoot area needs to maintain stability during the transition of force on the sole, and the forefoot area needs to cooperate with the flexion of the foot and participate in the push-off propulsion. Therefore, the sole structure must not only have the ability to cushion and absorb energy, but also maintain sufficient support, and it also needs to form an appropriate recovery after unloading to adapt to the changes in force during continuous foot movement. However, current shoe soles are generally made of a single material, and their cushioning, rebound, and support performance are roughly the same in different areas, making it impossible to provide different required performance in different areas. Summary of the Invention

[0003] The purpose of this application is to solve the problem that existing shoe soles have roughly the same cushioning, rebound and support performance in different areas, making it difficult to provide the required performance in different areas, and to disclose a shoe sole and shoe with multi-angle bending units.

[0004] The applicant discovered that the load direction and deformation requirements of the sole are not the same during heel strike, midfoot transition, and forefoot push-off. If the sole relies solely on the material itself to produce approximately uniform compression and recovery, the deformation paths and support strength of different areas are difficult to correspond to the gait stages. The heel area is prone to lacking stable support upon strike, the midfoot area is prone to lacking a continuous transition during forefoot and rearfoot load transfer, and the forefoot area is also difficult to form a recovery response suitable for push-off after flexion.

[0005] To achieve the above objectives, the following technical solution is adopted: In at least one embodiment, a sole with multi-angle bending units is disclosed. The sole is divided into a forefoot region, a midfoot region, and a heel region along its length. The sole includes an upper sole, a lower sole, and a support layer located between the upper sole and the lower sole. The support layer corresponds to at least a portion of each of the forefoot region, midfoot region, and heel region, and is provided with a plurality of bending units spaced apart along the length of the sole. The bending units extend along the width direction of the sole and along the thickness direction of the sole to connect the upper sole and the lower sole. The bending unit includes at least a first extension segment located at the upper part and a second extension segment located at the lower part along the thickness direction of the sole, and the first extension segment and the second extension segment are connected with the connection point being bent. On a projection plane perpendicular to the width direction of the sole, the first extension has a first angle relative to a first plane perpendicular to the thickness direction of the sole, and the second extension has a second angle relative to a second plane perpendicular to the thickness direction of the sole; in the forefoot region, the first angle is greater than the second angle; in the heel region, the first angle is less than the second angle; in the midfoot region, both the first angle and the second angle are greater than the second angle in the forefoot region and both are greater than the first angle in the heel region; at least a portion of the effective support cross-sectional area of ​​the bending unit located in the heel region is greater than a portion of the effective support cross-sectional area of ​​the bending unit located in the forefoot region.

[0006] In the above design, multiple bending units spaced apart along the length of the sole are arranged in the support layer of the sole to connect the upper and lower soles, forming a support structure with spaced deformation between the upper and lower soles. Each bending unit includes a first extension at the top and a second extension at the bottom, and the connection between the two is bent, giving the bending unit an overall zigzag bending structure. When the sole is compressed, the bending unit deforms at the bend, and the first extension at the top and the second extension at the bottom move closer to each other with the bend as the midpoint, thereby absorbing impact energy. When the first and second extensions of the bending unit are close together, they provide support performance. Afterward, the bending unit returns to its original shape, providing rebound performance. Thus, by deforming the bending units in the support layer, the sole's lightweight advantage is maintained while providing cushioning, rebound, and support.

[0007] Based on this, the bending shape and support path of the bending units in different areas of the support layer are not the same. In the forefoot area, the first included angle is larger than the second included angle, so that the bending units in the forefoot area form a relatively small angle support shape on the side near the bottom, which is convenient for cooperating with the rolling bending of the bottom side during forefoot push-off. In the heel area, the first included angle is smaller than the second included angle, so that the bending units in the heel area form a relatively large angle support shape on the side near the bottom, in order to meet the support and cushioning requirements when the heel strikes. In the midfoot area, both the first and second included angles are larger than the second included angle in the forefoot area and both are larger than the first included angle in the heel area, so that the midfoot area forms a transition support between forefoot bending and heel support, reducing the discontinuity caused by abrupt changes in support characteristics between areas. Thus, by limiting the bending shape of the bending units, different bending and support orientations can be formed when loads are applied to the bending units in different areas, which helps the sole to form a matching bending and support response during forefoot push-off, heel strike, and midfoot transition. Furthermore, at least some of the bending units in the heel area have a large effective support cross-sectional area, allowing the load transmitted from the top to the bottom when the heel touches the ground to act on a larger area of ​​solid material. The angular relationship between this solid bearing area and the heel area helps to maintain the structural stability of the heel area while cushioning impacts, reducing the possibility of localized excessive compression or folding under repeated pressure.

[0008] In a shoe sole with multi-angle bending units disclosed in at least one embodiment, preferably, the angle of the first included angle of each of the bending units in the support layer gradually increases from front to back, and the angle of the second included angle gradually decreases from front to back.

[0009] In the above design, because the first and second included angles change continuously along the length of the sole, the bending orientation between the forefoot, midfoot, and heel areas can gradually transition. When the foot load is transferred from back to front or from front to back, local deformation concentration is less likely to occur between adjacent bending units due to abrupt angle changes, thus improving the transitional stability of the sole during movement.

[0010] In the sole with a multi-angle bending unit disclosed in at least one embodiment, preferably, in the forefoot region, the first included angle is 40° to 50° and the second included angle is 20° to 30°; in the midfoot region, both the first included angle and the second included angle are 65° to 80°; and in the heel region, the first included angle is 20° to 30° and the second included angle is 40° to 50°.

[0011] In the above design, the forefoot and heel areas adopt opposite vertical extensions with varying inclinations, while the midfoot area uses a larger first and second angle to create a more supportive transition shape. This angle range allows the forefoot area to retain flexion and recovery space, enables the heel area to provide ground contact support, and allows the midfoot area to provide continuous support between the two, thus facilitating a balance between forefoot push-off response, heel ground contact cushioning, and midfoot transition stability.

[0012] In the sole with a multi-angle bending unit disclosed in at least one embodiment, more preferably, the difference between the first included angle in the forefoot region and the second included angle in the heel region is not greater than 5°, and the difference between the second included angle in the forefoot region and the first included angle in the heel region is not greater than 5°.

[0013] In the above design, because the corresponding angles between the forefoot and heel areas maintain a small difference, the forefoot and heel areas can form a relatively coordinated angle match based on opposite deformation orientations. This preserves the differences in the stress response of the forefoot and heel areas while helping to avoid an excessively disparate relationship between the forefoot and heel structures that would affect the overall stress continuity of the sole.

[0014] In the sole with a multi-angle bending unit disclosed in at least one embodiment, preferably, the effective support cross-sectional area is the area of ​​solid material of the bending unit in a cross-section perpendicular to the width direction of the sole used to bear the load transmitted from the upper sole to the lower sole; the bending unit located in the heel region increases the effective support cross-sectional area of ​​the bending unit by increasing the unit wall thickness along the length direction of the sole, the unit width along the width direction of the sole, or the solid material area of ​​at least one of the first extension segment and the second extension segment, so that its effective support cross-sectional area is greater than that of the bending unit located in the forefoot region.

[0015] In the above design, by increasing the unit wall thickness, unit width, or the area of ​​the solid material of the extension section, the bending unit in the heel area can form a more sufficient solid load-bearing capacity in the load transfer direction; when the effective support cross-sectional area of ​​the forefoot area is relatively small, more bending deformation space can be retained, which is conducive to making the heel area focus on support and stability, and the forefoot area focus on bending recovery.

[0016] In a sole with multi-angle bending units disclosed in at least one embodiment, preferably, two adjacent bending units, the upper sole and the lower sole together define a lateral opening, the lateral opening opening into the inner side wall and / or outer side wall of the sole, and a plurality of the lateral openings are spaced apart along the length direction of the sole.

[0017] In the above design, the lateral openings are located between adjacent bending units, providing clearance for the deformation, bending, and recovery of the bending units under pressure. With multiple lateral openings spaced apart along the length of the sole, the support layer maintains the connection between the multiple bending units and the upper and lower soles, while also creating clearance between adjacent units. This facilitates controlled deformation of the bending units and reduces the weight of the sole, contributing to its lightweight design.

[0018] In a shoe sole with a multi-angle bending unit disclosed in at least one embodiment, preferably, the first extension segment of the bending unit located in the heel region includes an upper sub-segment and a first transition segment, the upper sub-segment, the first transition segment, and the second extension segment are connected sequentially from top to bottom, and the connection between the upper sub-segment and the first transition segment is bent to form a first bending portion, the connection between the first transition segment and the second extension segment forms a second bending portion, and the bending directions of the first bending portion and the second bending portion are opposite; the length of the first transition segment is greater than that of the upper sub-segment and the second extension segment.

[0019] In the above design, the first extension of the heel region forms a continuous compound bending path through the upper sub-segment and the first transition segment. The bending directions of the first and second bends are opposite, allowing the load to be transmitted step-by-step along the upper sub-segment, the first transition segment, and the second extension when the heel region is subjected to ground contact load, resulting in segmented deformation at the first and second bends. Because the length of the first transition segment is greater than that of the upper sub-segment and the second extension, it can serve as a more significant inclined force transmission segment in the heel region, allowing pressure from the upper bottom side to transition to the lower bottom side over a longer path. This reduces the concentration of load at a single bending point, thus enabling the heel region to maintain its support while exhibiting a smoother compressive buffer response.

[0020] In a shoe sole with a multi-angle bending unit disclosed in at least one embodiment, preferably, the second extension segment of the bending unit located in the forefoot region includes a lower sub-segment and a second transition segment, wherein the lower sub-segment, the second transition segment, and the first extension segment are connected sequentially from bottom to top, and the connection between the lower sub-segment and the second transition segment is bent to form a third bending portion, and the connection between the second transition segment and the first extension segment forms a fourth bending portion, wherein the bending directions of the third bending portion and the fourth bending portion are opposite; the length of the second transition segment is greater than that of the lower sub-segment and the first extension segment.

[0021] In the above design, the second extension of the forefoot area forms a compound bending path near the underside through the lower sub-segment and the second transition segment. Furthermore, the bending directions of the third and fourth bending sections are opposite, allowing the deformation of the underside of the forefoot area during push-off bending to be guided first by the lower sub-segment and then transmitted to the first extension segment via the second transition segment. Because the second transition segment is longer than both the lower sub-segment and the first extension segment, it forms a longer bending transition path in the forefoot area. This prevents the bending deformation of the forefoot area from concentrating at a single location on the underside when under stress, improving the forefoot area's adaptability to rolling bending and making the rebound process after bending more continuous.

[0022] In the sole with multi-angle bending unit disclosed in at least one embodiment, preferably, the upper sole, lower sole and support layer are integrally molded structures.

[0023] In the above design, the upper bottom, lower bottom and support layer can form an integral structure, reducing the risk of loosening at the connection interface between the support layer and the upper bottom and lower bottom, and enabling the bending unit to transmit load more stably when under stress.

[0024] In at least one embodiment, a shoe is disclosed, the shoe including an upper and a sole having a multi-angle bending unit as disclosed in any of the above embodiments, the upper being attached to the sole.

[0025] In the above design, because the shoe uses the above sole, it is possible to form differentiated support and bending response by utilizing the bending units in different areas of the sole during wear. Attached Figure Description

[0026] 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.

[0027] Figure 1 This is a schematic diagram of the structure of a shoe sole with multi-angle bending units according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the bending angle of a shoe sole with a multi-angle bending unit according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the sole with multi-angle bending units according to an embodiment of the present invention when the heel is stepped on; Figure 4 This is a schematic diagram of the sole with multi-angle bending units according to an embodiment of the present invention when the heel and midfoot are stepped on.

[0028] Explanation of key figure labels: Sole 100; Forefoot area 101; Midfoot area 102; Heel area 103; Top bottom 110; bottom bottom 120; support layer 130; side opening 131; Bending unit 140; first extension segment 141; upper sub-segment 1411; first transition segment 1412; first bending portion 1413; second bending portion 1414; second extension segment 142; lower sub-segment 1421; second transition segment 1422; third bending portion 1423; fourth bending portion 1424; First included angle 21; second included angle 22. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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."

[0034] Example This invention relates to a shoe, which includes a sole 100 and an upper, the upper being attached to the sole 100.

[0035] The shoe upper can be a structure suitable for connecting with the sole 100 and covering at least a portion of the foot. The upper can be attached to the upper side or periphery of the sole 100 by means of bonding, sewing, heat pressing, or integral molding, so that the upper and sole 100 together define a wearing space for accommodating the foot. The specific structure of the upper can be designed according to the type of shoe, for example, it can be an athletic shoe upper, a casual shoe upper, or other upper structures suitable for use with the sole 100 of this embodiment. The improvement of this embodiment focuses on the structural configuration of the upper sole 110, lower sole 120, and support layer 130 in the sole 100; the material, number of layers, and appearance of the upper do not constitute a limitation on the scope of protection of this invention.

[0036] Additionally, refer to Figure 1 The sole 100 of the shoe is the sole 100 with multi-angle bending unit 140 involved in the embodiment of the present invention.

[0037] Among them, such as Figure 1 As shown, the sole 100 is divided along its length into a forefoot region 101, a midfoot region 102, and a heel region 103. The forefoot region 101 mainly corresponds to the forefoot and push-off area, the midfoot region 102 mainly corresponds to the arch and forefoot-to-back transition area, and the heel region 103 mainly corresponds to the heel contact area. The length direction of the sole 100 refers to the direction between the forefoot region 101 and the heel region 103; the width direction of the sole 100 refers to the direction between the medial and lateral sides of the sole 100; and the thickness direction of the sole 100 refers to the direction from the lower sole 120 to the upper sole 110 or from the upper sole 110 to the lower sole 120. It is easy to understand that the above division of the sole 100 regions is mainly used to illustrate the structural configuration and relative positional relationship of the bending units 140 in different regions, and does not require an absolutely fixed dividing line between the forefoot region 101, the midfoot region 102, and the heel region 103. Depending on the shoe size, shoe type, and outer contour of the sole 100, the proportion and junction position of each area in the length direction of the sole 100 can be adjusted adaptively, as long as the forefoot area 101, midfoot area 102, and heel area 103 correspond to the push-off, transition, and ground contact areas of the foot, respectively.

[0038] First refer to Figure 1The sole 100 includes an upper sole 110, a lower sole 120, and a support layer 130. The upper sole 110 is located on the side of the sole 100 closest to the foot, the lower sole 120 is located on the side of the sole 100 closest to the ground, and the support layer 130 is located between the upper sole 110 and the lower sole 120. The support layer 130 is provided at least partially in each of the forefoot region 101, the midfoot region 102, and the heel region 103, so that the sole 100 has a support structure formed by the support layer 130 in each of the above-mentioned regions. The support layer 130 can be continuously distributed along the length of the sole 100, or it can be formed in a distribution pattern adapted to the contour of the sole 100 in local areas, as long as it can connect the upper sole 110 and the lower sole 120 and bear the load transmission in the corresponding areas.

[0039] The support layer 130 includes a plurality of bending units 140, which are spaced apart along the length of the sole 100. Each bending unit 140 extends along the width of the sole 100 and along the thickness of the sole 100 to connect the upper sole 110 and the lower sole 120. Thus, the bending unit 140 forms a laterally extending support structure in the width direction of the sole 100, and spans between the upper sole 110 and the lower sole 120 in the thickness direction of the sole 100. After the plurality of bending units 140 are spaced apart along the length of the sole 100, adjacent two bending units 140, the upper sole 110, and the lower sole 120 together define a lateral opening 131. The lateral opening 131 may open into the inner sidewall and / or the outer sidewall of the sole 100, and the plurality of lateral openings 131 are spaced apart along the length of the sole 100, thereby providing a certain amount of clearance for the bending units 140 to deform under pressure and recover.

[0040] Each bending unit 140 includes a first extension 141 located at the upper part and a second extension 142 located at the lower part. The first extension 141 is disposed near the upper sole 110, and the second extension 142 is disposed near the lower sole 120. The first extension 141 and the second extension 142 are connected in a bent shape at their junction. This bent connection can be a zigzag transition or a bend with a certain smooth transition, as long as the first extension 141 and the second extension 142 have different extension directions. With this structure, the bending unit 140 forms a support path with at least one bend between the upper sole 110 and the lower sole 120, which can generate controlled bending deformation when bearing foot loads.

[0041] Among them, reference Figure 2On a projection plane perpendicular to the width direction of the sole 100, the first extension segment 141 has a first included angle 21 relative to a first plane perpendicular to the thickness direction of the sole 100, and the second extension segment 142 has a second included angle 22 relative to a second plane perpendicular to the thickness direction of the sole 100. Both the first and second planes can be understood as reference planes parallel to the reference planes containing the length and width directions of the sole 100. The first included angle 21 characterizes the degree of inclination of the first extension segment 141 relative to the corresponding reference plane, and the second included angle 22 characterizes the degree of inclination of the second extension segment 142 relative to the corresponding reference plane. Specifically, the first included angle 21 and the second included angle 22 refer to the angles formed by the first extension segment 141 and the second extension segment 142 intersecting with the corresponding planes, pointing towards the front end of the sole 100.

[0042] like Figure 1 As shown, the bending units 140 in the forefoot region 101, midfoot region 102, and heel region 103 employ different relationships of a first included angle 21 and a second included angle 22. Figure 2 It is more clearly reflected in the text, but Figure 2 This is merely a simulation of the specific shapes of the bending unit 140 in different areas; the actual setup can be found by referring to [the provided text]. Figure 1 In the forefoot region 101, the first included angle 21 is greater than the second included angle 22. Therefore, in the bending unit 140 of the forefoot region 101, the first extension segment 141 near the upper bottom 110 has a greater degree of inclination relative to the reference plane than the second extension segment 142 near the lower bottom 120, so that the forefoot region 101 can form a recoverable bending deformation during the push-off phase through the cooperation of the first extension segment 141 and the second extension segment 142.

[0043] In the heel region 103, the first included angle 21 is smaller than the second included angle 22. As a result, in the bending unit 140 of the heel region 103, the second extension 142 near the lower bottom 120 has a greater degree of inclination relative to the reference plane than the first extension 141 near the upper bottom 110. This allows the heel region 103 to form a relatively more direct support path through the lower structure when it is pressed against the ground, and to form a buffer support together with the upper structure.

[0044] In the midfoot region 102, both the first included angle 21 and the second included angle 22 are larger than the second included angle 22 of the forefoot region 101, and both are larger than the first included angle 21 of the heel region 103. The midfoot region 102 is located between the forefoot region 101 and the heel region 103, and the upper and lower extensions of its bending unit 140 have a large degree of inclination, which can form a structural transition between the bending compliance of the forefoot region 101 and the landing support of the heel region 103. In this way, when the sole 100 is subjected to force along its length, the deformation response of different regions can form a continuous connection, reducing the uncoordinated deformation caused by abrupt changes in support characteristics in local areas.

[0045] In one embodiment, the first included angle 21 of each bending unit 140 in the support layer 130 gradually increases from front to back, and the second included angle 22 gradually decreases from front to back. That is, along the direction from the forefoot region 101, the midfoot region 102 to the heel region 103, the upper extension angle and the lower extension angle of different bending units 140 change in opposite trends. This arrangement creates a gradual angle distribution in the support layer 130 along the length of the sole 100, enabling a smoother support transition between different areas of the sole 100.

[0046] In another embodiment, the first included angle 21 and the second included angle 22 in the forefoot region 101, the midfoot region 102, and the heel region 103 can each be within a preset angle range. For example, in the forefoot region 101, the first included angle 21 can be 40° to 50°, and the second included angle 22 can be 20° to 30°; in the midfoot region 102, both the first included angle 21 and the second included angle 22 can be 65° to 80°; and in the heel region 103, the first included angle 21 can be 20° to 30°, and the second included angle 22 can be 40° to 50°. In this embodiment, the difference between the first included angle 21 in the forefoot region 101 and the second included angle 22 in the heel region 103 can be no greater than 5°, and the difference between the second included angle 22 in the forefoot region 101 and the first included angle 21 in the heel region 103 can be no greater than 5°, thereby creating a more coordinated reverse configuration in the angular relationship between the forefoot region 101 and the heel region 103.

[0047] In this embodiment, the effective support cross-sectional area of ​​the bending unit 140 in at least a portion of the heel region 103 is greater than the effective support cross-sectional area of ​​the bending unit 140 in a portion of the forefoot region 101. The effective support cross-sectional area refers to the area of ​​solid material in the bending unit 140, perpendicular to the width direction of the sole 100, used to bear the load transferred from the upper sole 110 to the lower sole 120. It focuses on the contribution of the solid portion of the bending unit 140 itself to the load transfer between the upper sole 110 and the lower sole 120, excluding the opening space between adjacent bending units 140. The effective support cross-sectional area can be increased by increasing the unit wall thickness of the bending unit 140 along the length direction of the sole 100, increasing the unit width of the bending unit 140 along the width direction of the sole 100, or increasing the solid material area of ​​at least one of the first extension segment 141 and the second extension segment 142. When the effective support cross-sectional area of ​​the heel region 103 is larger, the heel region 103 can have a stronger solid support foundation; when the effective support cross-sectional area of ​​the forefoot region 101 is relatively smaller, the forefoot region 101 can retain more bending and deformation space.

[0048] like Figure 1As shown, in at least a portion of the bending unit 140 of the heel region 103, the first extension segment 141 includes an upper sub-segment 1411 and a first transition segment 1412. The upper sub-segment 1411, the first transition segment 1412, and the second extension segment 142 are connected sequentially from top to bottom. The junction of the upper sub-segment 1411 and the first transition segment 1412 is bent to form a first bending portion 1413, and the junction of the first transition segment 1412 and the second extension segment 142 forms a second bending portion 1414. The bending directions of the first bending portion 1413 and the second bending portion 1414 are opposite. Thus, a compound bending path is formed on the side of the heel region 103 near the upper sole 110, allowing the heel region 103 to distribute local deformation through multiple bending positions when subjected to heel lateral pressure.

[0049] In at least a portion of the bending unit 140 of the forefoot region 101, the second extension segment 142 includes a lower sub-segment 1421 and a second transition segment 1422. The lower sub-segment 1421, the second transition segment 1422, and the first extension segment 141 are connected sequentially from bottom to top. The junction between the lower sub-segment 1421 and the second transition segment 1422 is bent to form a third bending portion 1423, and the junction between the second transition segment 1422 and the first extension segment 141 forms a fourth bending portion 1424. The bending directions of the third bending portion 1423 and the fourth bending portion 1424 are opposite. Thus, a compound bending path is formed on the side of the forefoot region 101 near the undersole 120, allowing the forefoot region 101 to deform in conjunction with the undersole 120 during push-off and bending through the multi-segment structure of the second extension segment 142.

[0050] In one embodiment, the upper sole 110, lower sole 120, and support layer 130 are integrally molded structures. A continuous material connection is formed between the upper sole 110, lower sole 120, and support layer 130. The upper end of the bending unit 140 is connected to the upper sole 110, and the lower end of the bending unit 140 is connected to the lower sole 120, thereby enabling the support layer 130, upper sole 110, and lower sole 120 to form an integral sole 100 structure. The integral molding structure allows the bending unit 140 to maintain a stable connection with the upper sole 110 and lower sole 120 during compression, bending, and recovery, reducing the possibility of partial detachment or misalignment of the support layer 130. The sole 100 can be made of thermoplastic polyurethane material, and its molding method can be compression molding.

[0051] In addition, refer to Figure 3 and Figure 4This illustrates the deformation of the sole 100 during footsteps. When the heel region 103 is initially compressed, the bending unit 140 in the heel region 103 undergoes compression and bending deformation between the upper sole 110 and the lower sole 120, causing the lateral opening 131 to narrow, thus providing cushioning space for the heel's impact. As the footstep load continues to be transmitted to the midfoot region 102, the bending unit 140 in the midfoot region 102 participates in support and forms transitional support, allowing the compression deformation of the heel region 103 to be gradually transmitted along the length of the sole 100, reducing the possibility of concentrated collapse in localized areas. The forefoot region 101 retains corresponding bending and recovery space during this process, so as to cooperate with the forefoot in generating a bending response during the subsequent push-off phase.

[0052] In the shoe sole 100 with multi-angle bending units 140 of the present invention, a plurality of bending units 140 are provided in the support layer 130 of the shoe sole 100 at intervals along the length direction of the shoe sole 100 to connect the upper sole 110 and the lower sole 120, so that a support structure with an interval deformation space is formed between the upper sole 110 and the lower sole 120. Each bending unit 140 includes a first extension segment 141 at the top and a second extension segment 142 at the bottom, with the connection between the two being bent, giving the bending unit 140 an overall zigzag bending structure. When the sole 100 is compressed, the bending unit 140 deforms at the bend, and the first extension segment 141 at the top and the second extension segment 142 at the bottom approach each other with the bend as the midpoint, thereby absorbing impact energy. When the first extension segment 141 and the second extension segment 142 of the bending unit 140 are close together, they provide support performance. Afterward, the bending unit 140 recovers its deformation and provides rebound performance. Thus, through the deformation of the bending unit 140 in the support layer 130, it provides cushioning, rebound, and support while maintaining the lightweight advantage of the sole 100. Based on this, the bending shape and support path of the bending unit 140 in different areas of the support layer 130 are not the same. In the forefoot area 101, the first included angle 21 is larger than the second included angle 22, so that the bending unit 140 in the forefoot area 101 forms a relatively small angle support shape on the side near the bottom 120, which is convenient for cooperating with the rolling bending of the bottom 120 side when the forefoot pushes off. In the heel area 103, the first included angle 21 is smaller than the second included angle 22, so that the bending unit 140 in the heel area 103 forms a relatively large angle support shape on the side near the bottom 120, in order to meet the support and cushioning requirements when the heel hits the ground. In the midfoot area 102, the first included angle 21 and the second included angle 22 are both larger than the second included angle 22 in the forefoot area 101 and both are larger than the first included angle 21 in the heel area 103, so that the midfoot area 102 forms a transition support between the forefoot bending and the heel support, reducing the discontinuity caused by the sudden change in support characteristics between areas. Therefore, by defining the bending shape of the bending unit 140, different bending and support orientations can be formed when the load acts on the bending unit 140 in different regions. This helps the sole 100 to form matching bending and support responses during forefoot push-off, heel strike, and midfoot transition. Furthermore, at least some of the bending units 140 in the heel region 103 have a large effective support cross-sectional area, allowing the load transmitted from the upper sole 110 to the lower sole 120 during heel strike to act on a larger area of ​​solid material. The coordination between this solid bearing area and the angle of the heel region 103 helps maintain the structural stability of the heel region 103 while cushioning impact, reducing the possibility of localized excessive compression or folding under repeated pressure.

[0053] The descriptions of the foregoing specifications and embodiments are used to explain the technical solutions of the present invention and do not constitute a limitation on the scope of protection of the present invention. Under the guidance of the disclosure of the present invention, those skilled in the art can make modifications, equivalent substitutions, or other improvements to the embodiments of the present invention or some of its technical features. As long as these modifications, equivalent substitutions, or other improvements do not depart from the concept of the present invention, they should all be included within the scope of protection of the present invention.

Claims

1. A shoe sole with a multi-angle bending unit, wherein the shoe sole (100) is divided along its length into a forefoot region (101), a midfoot region (102), and a heel region (103), characterized in that, It includes an upper bottom (110), a lower bottom (120), and a support layer (130) located between the upper bottom (110) and the lower bottom (120). The support layer (130) corresponds to at least a portion of each of the forefoot region (101), midfoot region (102) and heel region (103), and is provided with a plurality of bending units (140) spaced apart along the length direction of the sole (100). The bending unit (140) extends along the width direction of the sole (100) and along the thickness direction of the sole (100) to connect the upper sole (110) and the lower sole (120); the bending unit (140) includes at least a first extension segment (141) located at the upper part and a second extension segment (142) located at the lower part along the thickness direction of the sole (100), the first extension segment (141) and the second extension segment (142) are connected and the connection point is bent; On the projection plane perpendicular to the width direction of the sole (100), the first extension (141) has a first included angle (21) relative to the first plane perpendicular to the thickness direction of the sole (100), and the second extension (142) has a second included angle (22) relative to the second plane perpendicular to the thickness direction of the sole (100). In the forefoot region (101), the first included angle (21) is greater than the second included angle (22); in the heel region (103), the first included angle (21) is less than the second included angle (22); in the midfoot region (102), both the first included angle (21) and the second included angle (22) are greater than the second included angle (22) of the forefoot region (101) and are both greater than the first included angle (21) of the heel region (103). At least a portion of the effective support cross-sectional area of ​​the bending unit (140) located in the heel region (103) is greater than the effective support cross-sectional area of ​​a portion of the bending unit (140) located in the forefoot region (101).

2. The sole with multi-angle bending units as described in claim 1, characterized in that, The angle of the first included angle (21) of each of the bending units (140) in the support layer (130) gradually increases from front to back, and the angle of the second included angle (22) gradually decreases from front to back.

3. The sole with multi-angle bending units as described in claim 1, characterized in that, In the forefoot region (101), the first included angle (21) is 40° to 50° and the second included angle (22) is 20° to 30°; in the midfoot region (102), the first included angle (21) and the second included angle (22) are both 65° to 80°; in the heel region (103), the first included angle (21) is 20° to 30° and the second included angle (22) is 40° to 50°.

4. The sole with multi-angle bending units as described in claim 3, characterized in that, The difference between the first included angle (21) in the forefoot region (101) and the second included angle (22) in the heel region (103) is no greater than 5°, and the difference between the second included angle (22) in the forefoot region (101) and the first included angle (21) in the heel region (103) is no greater than 5°.

5. The sole with multi-angle bending units as described in claim 1, characterized in that, The effective support cross-sectional area is the area of ​​solid material of the bending unit (140) in the cross-section perpendicular to the width direction of the sole (100) for bearing the load transmitted from the upper sole (110) to the lower sole (120); the bending unit (140) located in the heel region (103) increases the effective support cross-sectional area of ​​the bending unit (140) located in the forefoot region (101) by increasing the unit wall thickness along the length direction of the sole (100), the unit width along the width direction of the sole (100), or the solid material area of ​​at least one of the first extension (141) and the second extension (142).

6. The sole with multi-angle bending units as described in claim 1, characterized in that, Two adjacent bending units (140), the upper sole (110) and the lower sole (120) together define a lateral opening (131), which opens into the inner and / or outer side wall of the sole (100), and a plurality of lateral openings (131) are spaced apart along the length of the sole (100).

7. The sole with multi-angle bending units as described in claim 1, characterized in that, The first extension segment (141) of the bending unit (140) located in the heel region (103) includes an upper sub-segment (1411) and a first transition segment (1412). The upper sub-segment (1411), the first transition segment (1412), and the second extension segment (142) are connected sequentially from top to bottom. The connection between the upper sub-segment (1411) and the first transition segment (1412) is bent and forms a first bending portion (1413). The connection between the first transition segment (1412) and the second extension segment (142) forms a second bending portion (1414). The bending directions of the first bending portion (1413) and the second bending portion (1414) are opposite. The length of the first transition segment (1412) is greater than that of the upper sub-segment (1411) and the second extension segment (142).

8. The sole with multi-angle bending units as described in claim 7, characterized in that, The second extension segment (142) of the bending unit (140) located in the forefoot region (101) includes a lower sub-segment (1421) and a second transition segment (1422). The lower sub-segment (1421), the second transition segment (1422), and the first extension segment (141) are connected sequentially from bottom to top. The connection between the lower sub-segment (1421) and the second transition segment (1422) is bent and forms a third bend (1423). The connection between the second transition segment (1422) and the first extension segment (141) forms a fourth bend (1424). The bending directions of the third bend (1423) and the fourth bend (1424) are opposite. The length of the second transition segment (1422) is greater than that of the lower sub-segment (1421) and the first extension segment (141).

9. The sole with multi-angle bending units as described in claim 1, characterized in that, The upper bottom (110), lower bottom (120) and support layer (130) are integrally formed structures.

10. A type of shoe, characterized in that, The shoe includes an upper and a sole with a multi-angle bending unit as described in any one of claims 1-9, the upper being attached to the sole (100).

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