Shoe

Abstract

To provide a shoe capable of fixing a sole body to a shell stably.SOLUTION: A shoe 1A includes a flexible shell 10 and a sole body 30. The shell 10 includes a bottom wall part 11 having a ground plane and a peripheral wall part 12 standing from a peripheral edge of the bottom wall part 11. The sole body 30 is located above the bottom wall part 11 by being stored in the shell 10. The peripheral wall part 12 is provided with a pressing surface 14 located so as to extend inward the shell 10 and facing the bottom wall part 11 side. The sole body 30 is put between the pressing surface 14 and the bottom wall part 11, so that the sole body 30 is fixed to the shell 10.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present disclosure relates to shoes.

Background Art

[0002] For example, Japanese Unexamined Patent Application Publication No. 2022-127292 (Patent Document 1) and Japanese Unexamined Patent Application Publication No. 2022-127293 (Patent Document 2) disclose shoes including a flexible shell and a sole body housed in the shell.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] When adopting a configuration in which the sole body is housed in the shell as disclosed in the above Patent Documents 1 and 2, since the shell is made of a relatively soft member, a problem arises as to how to fix the sole body inside the shell.

[0005] If the fixing of the sole body to the shell is insufficient, the sole body may be displaced inside the shell during use, resulting in problems such as a significant impairment of the fit to the wearer's foot and the stability at landing.

[0006] On the other hand, although it is also conceivable to join the shell and the sole body using an adhesive, when adopting such a fixing structure, since the adhesive contains a corresponding amount of organic solvent, it is not necessarily preferable from the viewpoint of environmental load.

[0007] Accordingly, the present disclosure aims to stably fix the sole body to the shell in a shoe having a configuration in which the sole body is housed in the shell, without using an adhesive or while reducing the amount of adhesive used.

Means for Solving the Problems

[0008] A shoe according to one aspect of the present disclosure has an insertion space inside into which the foot of the wearer is inserted, and includes a flexible shell and a sole body. The shell includes a bottom wall portion having a ground contact surface and a peripheral wall portion standing upright from the periphery of the bottom wall portion. The sole body is configured to support the sole of the wearer's foot and is located above the bottom wall portion by being housed in the shell. The peripheral wall portion is provided with a pressing surface that extends toward the inside of the shell and faces the bottom wall portion side. In the shoe according to one aspect of the present disclosure, the sole body is sandwiched between the pressing surface and the bottom wall portion, whereby the sole body is fixed to the shell.

Effects of the Invention

[0009] According to the present disclosure, in a shoe having a configuration in which the sole body is housed in the shell, it is possible to stably fix the sole body to the shell without using an adhesive or while reducing the amount of adhesive used.

Brief Description of the Drawings

[0010]

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Embodiments for Carrying Out the Invention

[0011] Hereinafter, embodiments will be described in detail with reference to the drawings. In the embodiments shown below, the same or common parts are denoted by the same reference numerals in the drawings, and the description thereof will not be repeated.

[0012] (Embodiment 1) (A. Schematic Configuration of the Shoe) FIG. 1 is a perspective view of a shoe according to Embodiment 1, and FIG. 2 is a perspective view of the shoe shown in FIG. 1 as viewed from another direction. FIG. 3 is a plan view of the shoe shown in FIG. 1, and FIG. 4 is a side view of the shoe shown in FIG. 1 as viewed from the outer foot side. FIGS. 5 to 7 are cross-sectional views taken along lines V-V, VI-VI, and VII-VII shown in FIG. 3, respectively. Further, FIG. 8 is an exploded perspective view for explaining the assembling structure of the shoe shown in FIG. 1. First, with reference to FIGS. 1 to 8, a schematic configuration of the shoe 1A according to the present embodiment will be described.

[0013] As shown in FIGS. 1 to 8, the shoe 1A according to the present embodiment is in the form of a sock that covers substantially the entire foot of the wearer (i.e., the part on the distal side from the ankle). The shoe 1A includes a shell 10, an upper body 20, a sole body 30 (see FIGS. 3, 5 to 8), an additional sole body 40 (see FIGS. 6 to 8), and a heel counter 50 (see FIGS. 6 to 8). At the upper part of the shoe 1A, an opening 2 for inserting the foot is provided, and at the lower part of the shoe 1A, a ground contact surface 3 for contacting the ground or the like is provided. Further, an insertion space SP3 (see FIGS. 1, 3, and 5 to 7) that is a space for inserting the wearer's foot is provided inside the shoe 1A.

[0014] Here, the front-rear direction X of the shoe 1A is defined as the direction that coincides with the foot length direction of the wearer's foot when wearing the shoe 1A. The left-right direction Y of the shoe 1A is defined as the direction that coincides with the foot width direction of the wearer's foot when wearing the shoe 1A. Further, the up-down direction Z of the shoe 1A is defined as the direction orthogonal to both the front-rear direction X and the left-right direction Y described above. In particular, in the midfoot part R2 and the rearfoot part R3 of the shoe 1A described later, the up-down direction Z is substantially orthogonal to the ground contact surface 3 included in these parts.

[0015] As shown in FIGS. 3 and 4, the shoe 1A includes a front foot part R1 configured to support the toe part and the stepping part of the wearer's foot along the front-rear direction X, a midfoot part R2 configured to support the instep part of the wearer's foot, and a rearfoot part R3 configured to support the heel part of the wearer's foot.

[0016] The forefoot R1, midfoot R2, and hindfoot R3 are defined as follows based on the shoe center SC (see FIG. 3) of the shoe 1A. Here, the shoe center SC is a straight line obtained by projecting, along the vertical direction Z, a straight line connecting the portion between the first and second toes and the central portion of the calcaneus (so-called heel center, which is denoted by reference numeral HC in FIG. 3 and the like) of a standard wearer having a foot of a size that fits the shoe 1A when the standard wearer wears the shoe 1A. The direction in which the shoe center SC extends coincides with the front-rear direction X described above. As a premise, the positions on the shoe center SC and the foremost end and the rearmost end in the front-rear direction X of the insertion space SP3 are respectively referred to as the front-side end position PF and the rear-side end position PR, and the distance between the front-side end position PF and the rear-side end position PR along the front-rear direction X is defined as the total length of the insertion space SP3.

[0017] That is, when a virtual plane passing through the position of 40% of the total length of the insertion space SP3 from the front-side end position PF and orthogonal to the shoe center SC is defined as the first boundary surface P1, and a virtual plane passing through the position of 80% of the total length of the insertion space SP3 from the front-side end position PF and orthogonal to the shoe center SC is defined as the second boundary surface P2, the forefoot R1 corresponds to the portion included between the front-side end position PF and the first boundary surface P1 along the front-rear direction X, the midfoot R2 corresponds to the portion included between the first boundary surface P1 and the second boundary surface P2 along the front-rear direction X, and the hindfoot R3 corresponds to the portion included between the second boundary surface P2 and the rear-side end position PR along the front-rear direction X.

[0018] Also, as shown in FIG. 3, in a plan view, the shoe 1A is partitioned along the left-right direction Y into an inner-foot side portion (the portion on the S1 side shown in FIG. 3), which is the medial side (i.e., the side closer to the midline) of the foot in anatomical neutral position, and an outer-foot side portion (the portion on the S2 side shown in FIG. 3), which is the side opposite to the medial side (i.e., the side farther from the midline) of the foot in anatomical neutral position.

[0019] As shown in FIGS. 1 to 8, in the shoe 1A, the upper body 20 is accommodated in the shell 10, and the sole body 30 is accommodated in the upper body 20. Further, the additional sole body 40 and the heel counter 50 are accommodated in the shell 10 and are disposed outside the upper body 20. The shell 10, the upper body 20, and the sole body 30 are all located across the front foot part R1, the midfoot part R2, and the rear foot part R3. On the other hand, the additional sole body 40 is located across the midfoot part R2 and the rear foot part R3, and the heel counter 50 is located in the rear foot part R3.

[0020] As shown in FIGS. 1 to 7, the shell 10 constitutes the outermost shell of the shoe 1A and is made of a flexible member configured in a bag shape having an opening-shaped mouth part 10a. The shell 10 has an internal space communicating with the mouth part 10a, and the above-described insertion space SP3 is included in this internal space. The upper body 20, the sole body 30, the additional sole body 40, and the heel counter 50 are disposed in the internal space of the shell 10.

[0021] The shell 10 includes a bottom wall part 11 configured to cover the sole of the wearer's foot and a peripheral wall part 12 configured to cover the peripheral surface of the wearer's foot. The peripheral wall part 12 is erected so as to continuously extend upward from the peripheral edge of the bottom wall part 11.

[0022] As shown in FIGS. 5 to 7, the bottom wall part 11 has an inner surface 11a and an outer surface 11b which are a pair of main surfaces. The inner surface 11a is located on the side of the insertion space SP3, and the outer surface 11b constitutes the outermost surface located on the lower side in the vertical direction Z of the shoe 1A. The outer surface 11b of this bottom wall part 11 corresponds to the above-described ground contact surface 3, and thus the bottom wall part 11 has the ground contact surface 3.

[0023] The peripheral wall part 12 has an inner peripheral surface 12a and an outer peripheral surface 12b which are a pair of main surfaces. The inner peripheral surface 12a is located on the side of the insertion space SP3, and the outer peripheral surface 12b constitutes the outermost surface located in the front-rear direction X of the shoe 1A, the outermost surface located in the left-right direction Y, and the outermost surface located on the upper side in the vertical direction Z.

[0024] As shown in FIGS. 3 to 7, the peripheral wall portion 12 includes an inner-side peripheral wall portion 12A configured to cover the inner-side portion of the wearer's foot, an outer-side peripheral wall portion 12B configured to cover the outer-side portion of the wearer's foot, a rear-side peripheral wall portion 12C configured to cover the rear surface of the heel portion of the wearer's foot, and a front-side peripheral wall portion 12D configured to cover the front surface of the toe portion of the wearer's foot.

[0025] The height of the peripheral wall portion 12 (i.e., the dimension in the vertical direction Z) is not particularly limited. For example, by making the height of the outer-side peripheral wall portion 12B lower than the height of the inner-side peripheral wall portion 12A at a position corresponding to the opening edge 2, the pressure applied to the wearer's ankle from the shoe 1A can be reduced.

[0026] Here, among the peripheral wall portions 12 described above, the portion configured to cover the toenail of the wearer's foot (i.e., the portion located on the upper side in the vertical direction Z of the peripheral wall portion 12) is different from the other portions included in the peripheral wall portion 12. It is configured to have a thin thickness and is constituted by a mesh-like structure portion 10b formed by a plurality of linear portions intersecting each other in a direction orthogonal to the thickness direction.

[0027] By configuring in this way, the portion of the peripheral wall portion 12 configured to cover the toenail of the wearer's foot has a lower tensile elastic modulus and a smaller bending rigidity than the other portions included in the peripheral wall portion 12. Therefore, it becomes possible to deform the portion more flexibly. Thus, it is possible to improve the fitness while preventing excessive pressure from being applied to the toenail of the wearer's foot (especially the ridge line portion of the toenail) during wearing. Moreover, it becomes difficult to inhibit the bending of the shoe 1A during running or walking, and the shoe 1A becomes more likely to follow the movement of the foot. In addition, the shoe 1A can be worn and removed more easily.

[0028] In addition, among the peripheral wall portions 12, the portion configured to cover the toenail of the wearer's foot may be configured by, in addition to the above-described structure, a mesh-like structure portion in which polygons such as triangles and quadrilaterals are regularly arranged, or a mesh-like structure portion shaped like a line obtained by Voronoi division.

[0029] As shown in FIGS. 1 to 7, the above-described mouth portion 10a is provided at the upper end of the peripheral wall portion 12. This mouth portion 10a is located across the mid-foot portion R2 and the rear-foot portion R3. The mouth portion 10a is provided corresponding to the above-described opening edge 2, and at the time of manufacturing the shoe 1A or the like, the upper body 20, the sole body 30, the additional sole body 40, and the heel counter 50 are inserted into the shell 10 through the mouth portion 10a.

[0030] As shown in FIGS. 5 to 7, the internal space of the shell 10 is defined by the inner surface 11a of the bottom wall portion 11 and the inner peripheral surface 12a of the peripheral wall portion 12. The internal space is located across the front-foot portion R1, the mid-foot portion R2, and the rear-foot portion R3.

[0031] The internal space of the shell 10 is partitioned into a lower-side space SP1 located in the lower portion in the vertical direction Z of the shoe 1A and an upper-side space SP2 located in the upper portion in the vertical direction Z of the shoe 1A. More specifically, the lower-side space SP1 is a space defined by the inner surface 11a of the bottom wall portion 11 and the inner peripheral surface 12a of the peripheral wall portion 12 in a portion adjacent to the bottom wall portion 11, and the upper-side space SP2 is a space defined by the inner peripheral surface 12a of a portion of the peripheral wall portion 12 located above the portion adjacent to the bottom wall portion 11 in the vertical direction Z.

[0032] As will be described in detail later, the lower side space SP1 houses the lower part of the upper body 20, the entire sole body 30, the entire additional sole body 40, and the lower part of the heel counter 50, and the upper side space SP2 houses the upper part of the upper body 20 and the upper part of the heel counter 50. Note that the upper side space SP2 further includes the above-described insertion space SP3. The insertion space SP3 is defined by the upper surface of the sole body 30 (more precisely, the top surface 31a of the midsole 31 described later) and the inner peripheral surface 22a of the side wall portion 22 of the portion of the upper body 20 not covered by the sole body 30.

[0033] As shown in FIGS. 1 to 7, the upper body 20 constitutes a part of the portion that contacts the foot of the wearer of the shoe 1A (more specifically, the portion that contacts the peripheral surface of the wearer's foot), and is composed of a bag-shaped member provided with an opening 20a. The upper body 20 is housed in the shell 10 in a state of being overlapped with the bottom wall portion 11 and the peripheral wall portion 12 of the shell 10 so as to cover the inner surface of the shell 10. The upper body 20 is composed of a member that can be flexibly deformed from the viewpoints of improving the fit and ensuring good wearing comfort.

[0034] The upper body 20 includes a lower wall portion 21 configured to cover the sole of the wearer's foot and a side wall portion 22 configured to cover the peripheral surface of the wearer's foot. The side wall portion 22 is erected so as to continuously extend upward from the peripheral edge of the lower wall portion 21. The lower wall portion 21 extends along the inner surface 11a of the bottom wall portion 11 of the shell 10, and the side wall portion 22 extends along the inner peripheral surface 12a of the peripheral wall portion 12 of the shell 10.

[0035] As shown in FIGS. 5 to 7, the lower wall portion 21 has a pair of main surfaces, an inner surface 21a and an outer surface 21b. The inner surface 21a is located on the side of the insertion space SP3, and the outer surface 21b is located on the side of the bottom wall portion 11 of the shell 10.

[0036] The side wall portion 22 has an inner peripheral surface 22a and an outer peripheral surface 22b which are a pair of main surfaces. The inner peripheral surface 22a is located on the side of the insertion space SP3, and the outer peripheral surface 22b is located on the side of the peripheral wall portion 12 of the shell 10.

[0037] As shown in FIGS. 3 to 7, the side wall portion 22 includes an inner instep side wall portion 22A configured to cover the inner instep side portion of the wearer's foot, an outer instep side wall portion 22B configured to cover the outer instep side portion of the wearer's foot, a rear side wall portion 22C configured to cover the rear surface of the heel portion of the wearer's foot, and a front side wall portion 22D configured to cover the front surface of the toe portion of the wearer's foot.

[0038] Thereby, the inner instep side wall portion 22A of the upper body 20 is positioned so as to overlap with the inner instep side peripheral wall portion 12A of the shell 10, and the outer instep side wall portion 22B of the upper body 20 is positioned so as to overlap with the outer instep side peripheral wall portion 12B of the shell 10. Also, the rear side wall portion 22C of the upper body 20 is positioned so as to overlap with the rear side peripheral wall portion 12C of the shell 10, and the front side wall portion 22D of the upper body 20 is positioned so as to overlap with the front side peripheral wall portion 12D of the shell 10.

[0039] Note that a band portion 23 (see FIGS. 3, 5, and 7) is provided on the upper body 20, and this band portion 23 is for fixing the sole body 30 to the upper body 20. More specifically, the band portion 23 is connected to the inner instep side wall portion 22A and the outer instep side wall portion 22B so as to bridge them, and the sole body 30 is sandwiched between the band portion 23 and the lower wall portion 21 of the upper body 20, whereby the sole body 30 is fixed to the upper body 20.

[0040] Also, a tightening portion 24 is provided on the upper body 20, but details of this tightening portion 24 will be described in detail later.

[0041] As shown in FIGS. 1 to 7, an opening 20a described above is provided at the upper end of the side wall portion 22. This opening 20a is located across the middle foot portion R2 and the rear foot portion R3. The opening 20a corresponds to the above-described entrance 2, and when worn, the wearer's foot is inserted into the insertion space SP3 through the opening 20a. Note that the upper end portion of the side wall portion 22 that defines the opening 20a is positioned so as to protrude upward in the vertical direction Z from the mouth portion 10a of the shell 10. Thereby, it becomes possible to avoid the shell 10 directly contacting the wearer's ankle when worn, and it becomes possible to ensure a good wearing comfort.

[0042] As shown in FIGS. 5 to 8, the sole body 30 includes a midsole 31 as a cushioning material and a plate 32 as a repellent material. These midsole 31 and plate 32 are laminated in the vertical direction Z such that the midsole 31 is positioned above the plate 32. The sole body 30 is housed in the shell 10 and is further housed inside the upper body 20.

[0043] The midsole 31 supports the sole of the wearer's foot by forming a part of the portion that contacts the wearer's foot of the shoe 1A (more specifically, the portion that contacts the sole of the wearer's foot), and has a substantially flat plate-like shape. The midsole 31 has a top surface 31a and a bottom surface 31b which are a pair of main surfaces. The midsole 31 is composed of an elastically deformable member having a predetermined thickness so that a desired cushioning performance can be obtained during landing and the like.

[0044] Here, the top surface 31a of the midsole 31 may be configured to have an uneven shape corresponding to the shape of the sole of the wearer's foot from the viewpoint of suppressing the tilting of the wearer's ankle (so-called pronation) that may occur during landing and the collapse of the arch of the wearer's foot.

[0045] The plate 32 has a first main surface 32a and a second main surface 32b which are a pair of main surfaces positioned in the thickness direction, and a peripheral end surface 32c connecting these first main surface 32a and second main surface 32b. The first main surface 32a faces the upper side in the vertical direction Z, and the second main surface 32b faces the lower side in the vertical direction Z. The plate 32 is constituted by a hard member thinner than the midsole 31 so that desired repulsion performance can be obtained at the time of kicking out or the like.

[0046] As described above, the sole body 30 is constituted by laminating the midsole 31 and the plate 32, and the bottom surface 31b of the midsole 31 is in contact with the first main surface 32a of the plate 32. These midsole 31 and plate 32 may be joined by, for example, an adhesive, but from the viewpoint of reducing the amount of organic solvent used, it is preferable that these midsole 31 and plate 32 are non-joined.

[0047] The sole body 30 has an upper surface defined by the top surface 31a of the midsole 31 described above, a lower surface defined by the second main surface 32b of the plate 32 described above, and a peripheral surface including the peripheral end surface 32c of the plate 32 described above. Among these, the lower surface of the sole body 30 covers the inner surface 21a of the lower wall portion 21 of the upper body 20, and the peripheral surface of the sole body 30 faces the lower end side portion of the inner peripheral surface 22a of the side wall portion 22 of the upper body 20. Thereby, the sole body 30 is located above the bottom wall portion 11 of the shell 10 and further above the lower wall portion 21 of the upper body 20.

[0048] As shown in FIGS. 6 and 7, the additional sole body 40 supports the sole (particularly the lower surface of the heel portion) of the wearer's foot, and has a flat shape in which its thickness decreases from the rear end to the front end in the front-rear direction X. The additional sole body 40 functions as a cushioning material, and is constituted by an elastically deformable member so that desired cushioning performance can be obtained at the time of landing or the like. Here, the elastic modulus of the additional sole body 40 is different from the elastic modulus of the midsole 31 as the cushioning material included in the sole body 30 described above.

[0049] The additional sole body 40 is located at the rear foot part R3 as described above, is housed in the shell 10, and is disposed outside the upper body 20. Thereby, the lower surface of the additional sole body 40 covers the inner surface 11a on the rear end side in the front-rear direction X of the bottom wall portion 11 of the shell 10, and the upper surface of the additional sole body 40 covers the outer surface 21b on the rear end side in the front-rear direction X of the lower wall portion 21 of the upper body 20. Further, the end surface of the additional sole body 40 (that is, the surface connecting the upper surface and the lower surface of the additional sole body 40) covers a part of the inner peripheral surface 12a on the lower end side in the vertical direction Z of the peripheral wall portion 12 of the shell 10.

[0050] Thus, in addition to the midsole 31 as the cushioning material included in the sole body 30 described above, by disposing the additional sole body 40 as the cushioning material having an elastic modulus different from that of the midsole 31 at a position corresponding to the rear foot part R3, the cushioning performance with respect to the heel part at the time of landing can be more easily optimized.

[0051] That is, at the time of landing, particularly high foot pressure is applied to the sole of the shoe at the rear foot part R3. Therefore, in order to sufficiently relieve this foot pressure, it is necessary to enhance the cushioning performance of the cushioning material disposed in this part. In that case, considering that the above-described midsole 31 is configured by a single member disposed across the front foot part R1, the mid foot part R2, and the rear foot part R3, it is assumed that the thickness of the midsole 31 at the rear foot part R3 is increased compared to the thicknesses of the front foot part R1 and the mid foot part R2. However, when the thickness of the midsole 31 at the rear foot part R3 is increased, it is necessary to obtain corresponding cushioning performance also at the front foot part R1 and the mid foot part R2. However, a problem occurs in that significant sinking of the heel at the time of landing occurs at the rear foot part R3, and a large gap is generated between the toenail and the upper body 20 particularly at a position corresponding to the toenail of the wearer's foot.

[0052] In this regard, as described above, in addition to the midsole 31 as a cushioning material included in the sole body 30, an additional sole body 40 as a cushioning material having an elastic modulus different from that of the midsole 31 is disposed at the rear foot portion R3. By doing so, while maintaining the necessary cushioning performance in the front foot portion R1 and the mid foot portion R2, it becomes possible to enhance the cushioning performance in the rear foot portion R3 more than that in the front foot portion R1 and the mid foot portion R2, and moreover, it is possible to suppress the occurrence of excessive sinking of the heel portion at the time of landing. Therefore, as described above, it becomes possible to more easily optimize the cushioning performance with respect to the heel portion at the time of landing, and as a result, it becomes possible to suppress the generation of a gap between the foot of the wearer and the upper body 20.

[0053] Here, the thickness of the additional sole body 40 is preferably larger than the thickness of the midsole 31, particularly in the portion that supports the heel portion of the wearer's foot. Further, the elastic modulus of the additional sole body 40 is preferably lower than the elastic modulus of the midsole 31. By configuring in this way, at the time of landing, it becomes possible to make the deformation amount of the additional sole body 40 larger than the deformation amount of the midsole 31. Therefore, while ensuring high cushioning performance, it is possible to reduce the gap generated between the foot of the wearer and the upper body 20 as described above.

[0054] Also, in the present embodiment, as described above, the additional sole body 40 is disposed between the bottom wall portion 11 of the shell 10 and the lower wall portion 21 of the upper body 20. By configuring in this way, since it is possible to reduce the size of the upper body 20 by the amount corresponding to not disposing the additional sole body 40 inside the upper body 20, it contributes to the weight reduction of the shoe 1A.

[0055] In addition, upon landing, particularly when a high foot pressure is applied to the sole of the shoe at the rear foot part R3, the cushioning material of the part located at the rear foot part R3 is more likely to deteriorate than the cushioning material of the parts located at the front foot part R1 and the midfoot part R2, and there is a problem that the cushioning performance deteriorates due to long-term use. In this regard, as in the present embodiment, by dividing the cushioning material of the part located at the rear foot part R3 into the midsole 31 and the additional sole body 40, it becomes possible to replace only the additional sole body 40 that is more likely to deteriorate, and it becomes possible to use the shoe 1A for a longer period of time.

[0056] As shown in FIGS. 6 and 7, the heel counter 50 covers the circumferential surface of the heel portion of the wearer's foot (that is, the inner ankle portion and the outer ankle portion of the wearer's foot and the rear surface of the heel portion of the portion located between these), and is configured by a curved plate having a substantially C-shaped shape when viewed along the direction orthogonal to the ground contact surface 3. The heel counter 50 is a member for reinforcing the inner foot side peripheral wall portion 12A and the outer foot side peripheral wall portion 12B of the shell 10 of the portion corresponding to the rear foot part R3 and the rear side peripheral wall portion 12C of the shell 10.

[0057] The heel counter 50 is configured by a member harder than the shell 10 and the upper body 20. The heel counter 50 includes an enclosing portion 51 that covers the circumferential surface of the heel portion of the wearer's foot, and a protruding portion 52 that continuously extends from the lower end of the enclosing portion 51.

[0058] The enclosing portion 51 has a first portion 51A that covers the inner foot side circumferential surface of the heel portion of the wearer's foot (that is, the inner ankle portion of the wearer's foot), a second portion 51B that covers the outer foot side circumferential surface of the heel portion of the wearer's foot (that is, the outer ankle portion of the wearer's foot), and a third portion 51C that connects these first portion 51A and second portion 51B and covers the rear surface of the heel portion of the wearer's foot.

[0059] As a result, the first portion 51A of the surrounding portion 51 is positioned between and overlaps each of the inner instep side peripheral wall portion 12A of the shell 10 and the inner instep side wall portion 22A of the upper body 20. The second portion 51B of the surrounding portion 51 is positioned between and overlaps each of the outer instep side peripheral wall portion 12B of the shell 10 and the outer instep side wall portion 22B of the upper body 20. Further, the third portion 51C of the surrounding portion 51 is positioned between and overlaps each of the rear side peripheral wall portion 12C of the shell 10 and the rear side wall portion 22C of the upper body 20.

[0060] Therefore, since the peripheral surface of the wearer's heel is surrounded by the surrounding portion 51 of the heel counter 50, it is possible to suppress the shell 10 and the upper body 20 of the portion covering the peripheral surface of the wearer's heel from tilting in the left - right direction Y. In particular, it becomes possible to ensure stability at the time of landing.

[0061] The protruding portion 52 extends from the lower end of the surrounding portion 51 toward the bottom wall portion 11 side and protrudes toward the peripheral wall portion 12 side. More specifically, the protruding portion 52 is provided so as to continuously extend from any of the first portion 51A, the second portion 51B, and the third portion 51C of the surrounding portion 51. Thus, the protruding portion 52 has a flare shape. This protruding portion 52 is a part for fixing the heel counter 50 to the shell 10, but the details thereof will be described later.

[0062] In the shoe 1A according to the present embodiment described above, the peripheral surface of the wearer's foot is covered by the upper body 20, and the sole of the wearer's foot is covered by the midsole 31 of the sole body 30. Therefore, when the wearer wears the shoe 1A, the wearer's foot comes into contact with the soft upper body 20 that can be flexibly deformed and the relatively soft sole body 30 that can be elastically deformed. Therefore, by adopting the above configuration, the shell 10 does not directly contact the wearer's foot, and the shoe 1A with a comfortable wearing feeling can be obtained.

[0063] However, the upper body 20 and the sole body 30 do not necessarily have to come into contact with the wearer's foot entirely. In a range where the wearing comfort is not impaired, notches or openings such as cutout shapes or removed portions may be provided in these upper body 20 and sole body 30.

[0064] <B. Materials of Each Component> Next, the materials of each of the above-described components will be described. Note that the specific materials shown below are merely examples and are not limited thereto.

[0065] The shell 10 may basically be made of any material as long as it has flexibility, but preferably has appropriate strength. From this perspective, the shell 10 is preferably made of a resin material or a rubber material. Here, the material constituting the shell 10 may be a reactive material that starts a reaction by light (e.g., ultraviolet light) or heat, and may be, for example, a polymer or a reactive monomer.

[0066] More specifically, when the shell 10 is made of resin, for example, it can be made of a polyolefin resin, an ethylene-vinyl acetate copolymer (EVA), a polyamide-based thermoplastic elastomer (TPA, TPAE), a thermoplastic polyurethane (TPU), or a polyester-based thermoplastic elastomer (TPEE). On the other hand, when the shell 10 is made of rubber, for example, it can be made of butadiene rubber.

[0067] The shell 10 may also be made of a polymer composition. In this case, examples of the polymer contained in the polymer composition include olefin-based polymers such as olefin-based elastomers and olefin-based resins. Examples of olefin-based polymers include polyethylene (e.g., linear low density polyethylene (LLDPE), high density polyethylene (HDPE), etc.), polypropylene, ethylene-propylene copolymers, propylene-1-hexene copolymers, propylene-4-methyl-1-pentene copolymers, propylene-1-butene copolymers, ethylene-1-hexene copolymers, ethylene-4-methyl-pentene copolymers, ethylene-1-butene copolymers, 1-butene-1-hexene copolymers, 1-butene-4-methyl-pentene, ethylene-methacrylic acid copolymers, ethylene-methyl methacrylate copolymers, ethylene-methacryloyl ... Examples of the polyolefin include ethyl acrylate copolymer, ethylene-butyl methacrylate copolymer, ethylene-methyl acrylate copolymer, ethylene-ethyl acrylate copolymer, ethylene-butyl acrylate copolymer, propylene-methacrylic acid copolymer, propylene-methyl methacrylate copolymer, propylene-ethyl methacrylate copolymer, propylene-butyl methacrylate copolymer, propylene-methyl acrylate copolymer, propylene-ethyl acrylate copolymer, propylene-butyl acrylate copolymer, ethylene-vinyl acetate copolymer (EVA), and propylene-vinyl acetate copolymer.

[0068] The polymer may be an amide-based polymer such as an amide-based elastomer or an amide-based resin, etc. Examples of the amide-based polymer include polyamide 6, polyamide 11, polyamide 12, polyamide 66, polyamide 610, etc.

[0069] The polymer may be an ester-based polymer such as an ester-based elastomer or an ester-based resin, etc. Examples of the ester-based polymer include polyethylene terephthalate and polybutylene terephthalate.

[0070] Further, the polymer may be, for example, a urethane-based polymer such as a urethane-based elastomer or a urethane-based resin. Examples of the urethane-based polymer include polyester-based polyurethane, polyether-based polyurethane, etc., and urethane acrylate can be preferably used.

[0071] Further, the polymer may be, for example, a styrene-based polymer such as a styrene-based elastomer or a styrene-based resin. Examples of the styrene-based elastomer include styrene-ethylene-butylene copolymer (SEB), styrene-butadiene-styrene copolymer (SBS), hydrogenated product of SBS (styrene-ethylene-butylene-styrene copolymer (SEBS)), styrene-isoprene-styrene copolymer (SIS), hydrogenated product of SIS (styrene-ethylene-propylene-styrene copolymer (SEPS)), styrene-isobutylene-styrene copolymer (SIBS), styrene-butadiene-styrene-butadiene (SBSB), styrene-butadiene-styrene-butadiene-styrene (SBSBS), etc. Examples of the styrene-based resin include polystyrene, acrylonitrile styrene resin (AS), acrylonitrile butadiene styrene resin (ABS), etc.

[0072] Further, the polymer may be, for example, an acrylic-based polymer such as polymethyl methacrylate, a urethane-based acrylic polymer, a polyester-based acrylic polymer, a polyether-based acrylic polymer, a polycarbonate-based acrylic polymer, an epoxy-based acrylic polymer, a conjugated diene polymerization-based acrylic polymer and its hydrogenated product, a urethane-based methacrylic polymer, a polyester-based methacrylic polymer, a polyether-based methacrylic polymer, a polycarbonate-based methacrylic polymer, an epoxy-based methacrylic polymer, a conjugated diene polymerization-based methacrylic polymer and its hydrogenated product, a polyvinyl chloride-based resin, a silicone-based elastomer, butadiene rubber (BR), isoprene rubber (IR), chloroprene (CR), natural rubber (NR), styrene butadiene rubber (SBR), acrylonitrile butadiene rubber (NBR), butyl rubber (IIR), etc.

[0073] Note that the manufacturing method of the shell 10 is not particularly limited, but the shell 10 can be manufactured, for example, by injection molding, casting molding, or molding using a three-dimensional laminating apparatus. In particular, if the shell 10 is manufactured by molding using a three-dimensional laminating apparatus, shells 10 with various structures that are difficult to manufacture by injection molding or casting molding can be manufactured. Also, even when adopting molding using a three-dimensional laminating apparatus, the molding method is not particularly limited, but preferably, a thermal melting lamination molding method, a photopolymerization molding method, or a powder sintering lamination molding method can be used.

[0074] The upper body 20 may basically be made of any material as long as it can be deformed flexibly, but preferably, a woven fabric, a knitted fabric, a non-woven fabric, synthetic leather, resin, etc. are used. More specifically, the upper body 20 can be made of, for example, natural fibers such as cotton, hemp, and silk, and also, for example, synthetic fibers made of polyamide resins such as nylon, polyester resins, polyurethane resins, polyvinyl alcohol resins such as vinylon, polyacrylonitrile resins such as exlan and cashmilon, polyvinyl chloride resins such as teviron and envilon, polypropylene resins such as pyren, polyethylene resins, polystyrene resins, etc. Also, the upper body 20 can be made of, for example, rayon or cupra as recycled fibers.

[0075] In particular, as will be described later, if a woven fabric, a knitted fabric, a non-woven fabric, etc. of synthetic fibers having heat shrinkability are used, the upper body 20 that fits better to the wearer's foot can be obtained. Note that examples of the synthetic fibers having heat shrinkability include those mainly composed of, for example, polyester resins, polyurethane resins, etc., and in particular, Hytrel (trademark), which is a type of polyester resin, is preferably mentioned.

[0076] That is, when the upper body 20 is made of a woven fabric, knitted fabric, non-woven fabric, etc. of synthetic fibers having heat shrinkability, it is formed into a bag shape in advance, and heat treatment is performed in a state where a last is inserted therein. By heat shrinking due to heating, the upper body 20 undergoes a shape change to a state where it adheres closely to the last, and the shape after the change is retained. Therefore, if a last corresponding to the shape of the wearer's foot is prepared and the upper body 20 is formed using the same, an upper body 20 that fits the wearer's foot can be manufactured. Furthermore, if the heat treatment using the above-described last is performed with the upper body 20 incorporated into the shell 10, the upper body 20 will also fit the shell 10, and further improvement in fit can be achieved.

[0077] As the above-described last, a standard-shaped one corresponding to the size of the wearer's foot may be used. However, if a last manufactured based on the foot shape data obtained by measuring the actual wearer's foot is used, the fit of the manufactured shoe 1A to the wearer's foot will be significantly improved.

[0078] The midsole 31 and the additional sole body 40 may basically be made of any material as long as they can be elastically deformed, but it is preferable that they are made of members having appropriate strength and excellent cushioning properties. From this viewpoint, as the midsole 31 and the additional sole body 40, for example, a resin foam material containing a resin material as the main component and a foaming agent or cross-linking agent as the sub-component is used. Alternatively, a rubber foam material containing a rubber material as the main component and a plasticizer, foaming agent, reinforcing agent, cross-linking agent as the sub-components may be used.

[0079] Particularly preferably, the midsole 31 and the additional sole body 40 can be made of a foamed material such as a polyolefin resin, an ethylene-vinyl acetate copolymer (EVA), a polyamide-based thermoplastic elastomer (TPA, TPAE), a thermoplastic polyurethane (TPU), or a polyester-based thermoplastic elastomer (TPEE). Note that the midsole 31 and the additional sole body 40 do not necessarily have to be made of a foamed material, and they may be made of a non-foamed material.

[0080] The plate 32 only needs to be made of a material harder than the material constituting the midsole 31, and its material is not particularly limited. Examples of the material of the plate 32 include fiber-reinforced resins using carbon fiber, glass fiber, aramid fiber, Dyneema fiber (registered trademark), Zylon fiber (registered trademark), boron fiber, etc. as reinforcing fibers and epoxy resin, polyester resin, phenolic resin, polyamide resin, polypropylene resin, polyethylene resin, polyurethane resin, etc. as matrix materials, and non-fiber-reinforced resins made of polymer resins such as urethane-based thermoplastic elastomer (TPU), amide-based thermoplastic elastomer (TPA), and ethylene-vinyl acetate copolymer (EVA).

[0081] The heel counter 50 only needs to be made of a material harder than the material constituting the shell 10, and its material is not particularly limited. Examples of the material of the heel counter 50 include polymer resins such as urethane-based thermoplastic elastomer (TPU), amide-based thermoplastic elastomer (TPA), ethylene-vinyl acetate copolymer (EVA), and thermosetting urethane elastomer (TSU), and thermoplastic rubber.

[0082] Note that the manufacturing method of the heel counter 50 is not particularly limited, but the heel counter 50 can be manufactured, for example, by injection molding, casting, or molding using a three-dimensional laminating apparatus. In particular, if the heel counter 50 is manufactured by molding using a three-dimensional laminating apparatus, heel counters 50 with various structures that are difficult to manufacture by injection molding or casting can be manufactured. Further, even when adopting molding using a three-dimensional laminating apparatus, the molding method is not particularly limited, but preferably a thermal melting lamination molding method, a stereolithography method, or a powder sintering lamination molding method can be used.

[0083] <C. Schematic shoe assembly method> Next, with reference to FIG. 8 described above, a schematic shoe assembly method according to the present embodiment will be described.

[0084] As shown in FIG. 8, the shoe 1A according to the present embodiment is manufactured by mutually assembling a shell 10, an upper body 20, a midsole 31, a plate 32, an additional sole body 40, and a heel counter 50. These shell 10, upper body 20, midsole 31, plate 32, additional sole body 40, and heel counter 50 may be manufactured by any method.

[0085] Specifically, first, the additional sole body 40 and the heel counter 50 are inserted into the internal space of the shell 10. Here, since the shell 10 has flexibility, the additional sole body 40 can also be elastically deformed, and the heel counter 50 can also be flexibly deformed, so the additional sole body 40 and the heel counter 50 can be inserted into the shell 10 through the mouth portion 10a provided at the upper end of the shell 10. The additional sole body 40 inserted into the shell 10 is arranged along the inner surface 11a on the rear end side in the front-rear direction X of the bottom wall portion 11 of the shell 10. Further, the heel counter 50 inserted into the shell 10 is arranged along the inner peripheral surface 12a on the rear end side in the front-rear direction X of the peripheral wall portion 12 of the shell 10.

[0086] Next, the upper body 20 is inserted into the internal space of the shell 10. Here, since the shell 10 has flexibility and the upper body 20 can also be flexibly deformed, the upper body 20 can be inserted into the shell 10 through the mouth portion 10a provided at the upper end of the shell 10. The upper body 20 inserted into the shell 10 is arranged along the inner surface 11a of the bottom wall portion 11 and the inner peripheral surface 12a of the peripheral wall portion 12 of the shell 10. Also, the upper end portion of the side wall portion 22 of the portion defining the opening 20a is in a state of being drawn out from the mouth portion 10a of the shell 10 toward the outside. At this time, the upper surface of the additional sole body 40 and the inner peripheral surface of the heel counter 50 previously accommodated in the shell 10 will be covered by the upper body 20.

[0087] Next, the sole body 30 including the midsole 31 and the plate 32 is inserted into the upper body 20, and thereby is also inserted into the internal space of the shell 10. The midsole 31 and the plate 32 may be individually inserted into the upper body 20, or they may be inserted into the upper body 20 together. Here, although the midsole 31 can be elastically deformed, the plate 32 is relatively rigid and does not easily deform in its in-plane direction. However, since the upper body 20 can be flexibly deformed and the shell 10 also has flexibility, the sole body 30 including the midsole 31 and the plate 32 can be inserted into the upper body 20 through the opening 20a provided at the upper end of the upper body 20. At this time, the insertion of the midsole 31 and the plate 32 is not hindered by the mouth portion 10a provided at the upper end of the shell 10. The sole body 30 including the midsole 31 and the plate 32 inserted into the upper body 20 is arranged along the inner surface 21a of the lower wall portion 21 of the upper body 20. Thereby, the sole body 30 is arranged at an appropriate position in the internal space of the shell 10.

[0088] By performing the above assembly procedure, the mutual assembly of the shell 10, the upper body 20, the midsole 31, the plate 32, the additional sole body 40, and the heel counter 50 is completed, and thereby the manufacturing of the shoe 1A according to the present embodiment described above is completed. It should be noted that the above-described assembly method is merely an example, and other assembly methods (for example, other assembly procedures, the arrangement positions of each member different from the above, etc.) may be adopted.

[0089] <D. Parentheses> Thus, the shoe 1A according to the present embodiment can be manufactured by a very simple operation of mutually assembling the shell 10, the upper body 20, the sole body 30, the additional sole body 40, and the heel counter 50 that are individually manufactured in advance. Therefore, its manufacturing is facilitated compared to the prior art. In the shoe 1A according to the present embodiment, when the shell 10, the upper body 20, the sole body 30, the additional sole body 40, and the heel counter 50 are mutually assembled, they are also configured to be easily fixed. Moreover, the use of an adhesive is not required for the assembly of the midsole 31, the plate 32, the additional sole body 40, and the heel counter 50 to the shell 10 and the upper body 20. These points will be described in detail later.

[0090] <E. Fixing Structure of Sole Body to Shell> FIG. 9 is an enlarged view of the region IX shown in FIG. 6, and FIG. 10 is an enlarged cross-sectional view of the main part of the shoe shown in FIG. 1. FIG. 11 is a partially broken perspective view of the shell shown in FIG. 1 along the line XI-XI shown in FIG. 3. Further, FIG. 12 is a schematic diagram showing the formation range of the pressing surface provided on the peripheral wall portion of the shell shown in FIG. 1. Next, with reference to FIGS. 9 to 12 and the aforementioned FIGS. 6 and 7, the fixing structure of the sole body 30 to the shell 10 in the shoe 1A according to the present embodiment will be described in detail.

[0091] Here, FIGS. 9 and 10 are both cross-sectional views of the shoe 1A cut along a plane orthogonal to the shoe center SC. However, the cross-section shown in FIG. 9 is the cross-section of the shoe 1A at the portion where the heel counter 50 is disposed, while the cross-section shown in FIG. 10 is the cross-section of the portion where the heel counter 50 is not disposed. More specifically, the cross-section shown in FIG. 9 is the cross-section at the rear foot portion R3, and the cross-section shown in FIG. 10 is the cross-section at the midfoot portion R2. Also, in FIG. 12, illustration of the detailed structure of the shoe 1A is omitted, and the formation range of the pressing surface 14 is colored in a dark color to show the formation range of the pressing surface 14 when viewed from above along the vertical direction Z (the same applies to FIGS. 18 to 20, FIG. 22, FIG. 23, FIG. 32, and FIG. 35).

[0092] As shown in FIGS. 6, 7, and 9 to 11, in the shoe 1A according to the present embodiment, a constricted portion 13A is provided on the peripheral wall portion 12 of the shell 10. The constricted portion 13A is formed by constricting a predetermined portion of the peripheral wall portion 12 toward the inside of the shell 10 (that is, toward the insertion space SP3 side). As a result, the inner peripheral surface 12a of the peripheral wall portion 12 at the portion where the constricted portion 13A is provided protrudes toward the inside of the shell 10, while a depression is formed on the outer peripheral surface 12b of the peripheral wall portion 12 at the portion where the constricted portion 13A is provided.

[0093] The constricted portion 13A extends along the circumferential direction of the peripheral wall portion 12. More specifically, the constricted portion 13A extends along the circumferential direction of the peripheral wall portion 12 from the rear end side portion in the front-rear direction X of the inner foot side peripheral wall portion 12A of the portion included in the front foot portion R1 to the rear end side portion in the front-rear direction X of the outer foot side peripheral wall portion 12B of the portion included in the front foot portion R1 via the rear end position PR (see FIG. 7, etc.).

[0094] Here, by providing the constricted portion 13A described above on the peripheral wall portion 12, the inner peripheral surface 12a of the peripheral wall portion 12 includes a surface that extends toward the inside of the shell 10 and faces the bottom wall portion 11 side. The surface of the peripheral wall portion 12 that faces the bottom wall portion 11 side corresponds to the lower surface of the constricted portion 13A, and the lower surface of the constricted portion 13A functions as a pressing surface 14 for fixing the sole body 30. That is, in the shoe 1A according to the present embodiment, the end portion of the sole body 30 is inserted into the space below the portion where the constricted portion 13A is provided, so that the sole body 30 is sandwiched between the pressing surface 14 and the bottom wall portion 11, and thereby the sole body 30 is fixed to the shell 10.

[0095] As described above, in the shoe 1A according to the present embodiment, since the constricted portion 13A is provided so as to extend along the circumferential direction of the peripheral wall portion 12, the above-described pressing surface 14 is also positioned so as to extend along the circumferential direction of the peripheral wall portion 12.

[0096] That is, as shown in FIG. 12, the pressing surface 14 extends along the circumferential direction of the peripheral wall portion 12 from the rear end side portion in the front-rear direction X of the inner foot side peripheral wall portion 12A of the portion included in the front foot portion R1, via the rear end position PR, to the rear end side portion in the front-rear direction X of the outer foot side peripheral wall portion 12B of the portion included in the front foot portion R1. Therefore, the pressing surface 14 includes an inner foot side pressing surface 14A provided on the inner foot side peripheral wall portion 12A, an outer foot side pressing surface 14B provided on the outer foot side peripheral wall portion 12B, and a rear side pressing surface 14C provided on the rear side peripheral wall portion 12C, and these inner foot side pressing surface 14A, outer foot side pressing surface 14B, and rear side pressing surface 14C extend continuously with each other along the circumferential direction of the peripheral wall portion 12.

[0097] As a result, the sole body 30 will be sandwiched between each of these inner foot side pressing surfaces 14A, outer foot side pressing surfaces 14B, and rear side pressing surfaces 14C and the bottom wall portion 11. Therefore, the sole body 30 will be held by the shell 10 in the vertical direction Z at both ends in the left-right direction Y, and will also be held by the shell 10 in the vertical direction Z at the rear end in the front-rear direction X.

[0098] Therefore, by adopting the above configuration, the sole body 30 can be stably fixed to the shell 10, and it is possible to effectively suppress the sole body 30 from shifting inside the shell 10 during use. Therefore, by adopting the above configuration, it is possible to obtain the shoe 1A with significantly improved fit to the wearer's foot and stability during landing. In addition, since the pressing surface 14 for fixing the sole body 30 can be integrally provided on the shell 10 during the manufacture of the shell 10, it is also possible to reduce the number of parts and simplify the manufacturing process.

[0099] Note that the pressing surface 14 including the above-described inner foot side pressing surface 14A, outer foot side pressing surface 14B, and rear side pressing surface 14C is positioned so as to extend long along the circumferential direction of the peripheral wall portion 12, while the protruding amount toward the inside of the shell 10 is configured to be relatively small. By configuring in this way, the operation of fitting the end portion of the sole body 30 into the space below the pressing surface 14 is facilitated, and more stable fixing of the sole body 30 becomes possible because more portions of the sole body 30 are held by the shell 10.

[0100] Here, the fixing structure of the sole body 30 to the shell 10 described above can stably fix the sole body 30 to the shell 10 without using an adhesive, and in this regard, the amount of organic solvent used can be significantly reduced compared to the case where these fixings are performed using an adhesive. Therefore, by adopting the above configuration, the environmental load can be reduced compared to the conventional case.

[0101] Incidentally, as described above, since the shell 10 has flexibility, when assembling the sole body 30 to the shell 10, the end portion of the sole body 30 can be easily inserted into the space below the portion where the constricted portion 13A is provided due to the shell 10 being bent and deformed. Therefore, by adopting the above configuration, the assembly of the sole body 30 to the shell 10 is not difficult, and the assembly can be easily performed.

[0102] Also, in the shoe 1A according to the present embodiment, the pressing surface 14 is not provided on the front end side portions in the front-rear direction X of the inner foot side peripheral wall portion 12A and the outer foot side peripheral wall portion 12B of the portion included in the front foot portion R1 and the front side peripheral wall portion 12D. This is because the foot pressure applied to the sole body 30 during landing is large in the rear foot portion R3, while it is relatively small in the front foot portion R1. Therefore, if the sole body 30 is stably fixed to the shell 10 in the rear foot portion R3 and the middle foot portion R2, the corresponding effect can be obtained. Further, among the internal spaces of the shell 10, the portion corresponding to the front foot portion R1 is located deeper from the opening edge 2. Therefore, if the pressing surface 14 is provided in this portion, it is assumed that the assembly of the sole body 30 to the shell 10 will become complicated, and this is also to avoid this. However, as in the shoe 1A3 (see FIG. 19(A)) according to the third modification example described later, the pressing surface 14 may naturally be provided on the front end side portions in the front-rear direction X of the inner foot side peripheral wall portion 12A and the outer foot side peripheral wall portion 12B of the portion included in the front foot portion R1 and the front side peripheral wall portion 12D.

[0103] Further, in the shoe 1A according to the present embodiment, the pressing surface 14 has an inclined surface shape in which the protruding amount increases as it goes upward in the vertical direction Z. The above-described end surface of the sole body 30 (that is, the portion of the sole body 30 that faces the lower end side of the inner peripheral surface 22a of the side wall portion 22 of the upper body 20) also has an inclined surface shape corresponding thereto, and the midsole 31 is configured to have a substantially trapezoidal cross section. By configuring in this way, while realizing stable fixing of the sole body 30 by the pressing surface 14, the sole body 30 can be easily assembled to the shell 10.

[0104] Note that the pressing surface 14 does not necessarily have to be configured in an inclined surface shape in which the protruding amount increases as it goes upward in the vertical direction Z as described above. It may be configured in an inclined surface shape in which the protruding amount increases as it goes downward in the vertical direction Z, or may be configured in a horizontal surface shape extending in the left-right direction Y.

[0105] Here, when the pressing surface 14 is configured in an inclined surface shape in which the protruding amount increases as it goes upward in the vertical direction Z as described above, the smaller the angle formed by the pressing surface 14 of the inclined surface shape and the horizontal plane, the greater the fixing force with respect to the sole body 30. On the other hand, when the pressing surface 14 is configured in an inclined surface shape in which the protruding amount increases as it goes downward in the vertical direction Z, the greater the angle formed by the pressing surface 14 of the inclined surface shape and the horizontal plane, the greater the fixing force with respect to the sole body 30.

[0106] As described above, in the shoe 1A according to the present embodiment, the sole body 30 includes a midsole 31 and a plate 32, and the plate 32 is laminated with the midsole 31 by being disposed at a position below the midsole 31 in the vertical direction Z. Therefore, by adopting the above configuration, not only the midsole 31 but also the plate 32 can be held by the shell 10, and even if the midsole 31 and the plate 32 are not adhered to each other, these midsole 31 and plate 32 can be stably fixed to the shell 10 at the same time.

[0107] Also, as described above, in the shoe 1A according to the present embodiment, the upper body 20 is housed in the shell 10, and further, the sole body 30 is housed inside the upper body 20. Therefore, as shown in FIGS. 9 and 10, the sole body 30 is sandwiched between the pressing surface 14 and the bottom wall portion 11 with the upper body 20 interposed therebetween. Even in a configuration where the sole body 30 does not directly contact the pressing surface 14, since the upper body 20 is made of a sufficiently flexible member, the sole body 30 can be stably fixed to the shell 10 via the upper body 20.

[0108] Also, as described above, in the shoe 1A according to the present embodiment, the heel counter 50 is located at the rear foot portion R3, and the heel counter 50 is housed in the shell 10 and disposed outside the upper body 20. Therefore, as shown in FIG. 9, the sole body 30 is sandwiched between the pressing surface 14 and the bottom wall portion 11 with the flare-shaped protruding portions 52 of the upper body 20 and the heel counter 50 interposed therebetween. Even in a configuration where the sole body 30 does not directly contact the pressing surface 14, since the upper body 20 is made of a sufficiently flexible member and the shape of the protruding portion 52 of the heel counter 50 corresponds to the shape of the pressing surface 14 and the peripheral surface shape of the sole body 30, the sole body 30 can be stably fixed to the shell 10 via the upper body 20 and the heel counter 50. By adopting this configuration, it is also possible to stably fix the heel counter 50 to the shell 10, but this point will be described in detail later.

[0109] Furthermore, as described above, in the shoe 1A according to the present embodiment, the additional sole body 40 is located across the midfoot region R2 and the hindfoot region R3, and the additional sole body 40 is housed in the shell 10 and disposed outside the upper body 20. Here, the lower wall portion 21 of the upper body 20 covers the second main surface 32b of the plate 32 which is the lower surface of the sole body 30, and the additional sole body 40 is disposed between the lower wall portion 21 of the upper body 20 and the bottom wall portion 11. Therefore, the additional sole body 40 is sandwiched and held by the sole body 30 fixed by the pressing surface 14 and the bottom wall portion 11, and thereby is fixed to the shell 10. Therefore, by configuring in this way, it becomes possible to stably fix the sole body 30 and the additional sole body 40 to the shell 10 at the same time.

[0110] <F. Structure for preventing damage to the shell> Next, with reference to FIGS. 5 to 7, FIGS. 9 and 10 described above, the structure for preventing damage to the shell 10 in the shoe 1A according to the present embodiment will be described in detail.

[0111] As shown in FIGS. 5 to 7, FIGS. 9 and 10, in the shoe 1A according to the present embodiment, the sole body 30 has a plate 32 in addition to the midsole 31, and the plate 32 is housed in the shell 10 by being disposed in the internal space of the shell 10.

[0112] As described above, the plate 32 functions as a resilient member for obtaining a desired resilience performance at the time of kicking out or the like. That is, the plate 32 is formed of a member having a high elastic modulus and being hard. Thereby, the plate 32 is elastically deformed by receiving a high load at the time of kicking out or the like, and the restoring force generated in the plate 32 acts on the ground as a high repulsive force along with this elastic deformation. Therefore, by providing the plate 32 in the shoe 1A, the propulsive force forward at the time of kicking out or the like can be remarkably improved.

[0113] Here, since the plate 32 is relatively hard while the shell 10 is relatively soft, if the plate 32 is accommodated in the shell 10 without any special measures, the end portion of the plate 32 (that is, the edge portion of the plate 32 including the above-mentioned peripheral end surface 32c) may come into contact with the shell 10, causing the shell 10 to be scraped or torn.

[0114] In this regard, in the shoe 1A according to the present embodiment, the plate 32 is not disposed at a position inside the shell 10 and outside the upper body 20, but is accommodated in the upper body 20. As a result, the plate 32 is disposed inside the upper body 20 while being disposed in the internal space of the shell 10.

[0115] Therefore, with such a configuration, particularly as shown in FIGS. 9 and 10, an upper body 20 made of a member softer than the plate 32 is interposed between the peripheral end surface 32c of the plate 32 and the inner peripheral surface 12a of the peripheral wall portion 12 of the shell 10. Thus, a portion of the upper body 20 sandwiched between these peripheral end surface 32c and inner peripheral surface 12a (in FIGS. 9 and 10, reference numeral 22c is attached to this portion) functions as a protection portion for protecting the shell 10 from the plate 32.

[0116] Therefore, by adopting the above configuration, while providing a high propulsion force during kicking or the like by providing a hard plate 32 as a repulsion material to the flexible shell 10, the end portion of the plate 32 does not directly contact the shell 10, so that it is possible to prevent the shell 10 from being scraped or torn. Therefore, it is possible to obtain a shoe 1A that achieves both an improvement in propulsion force and an improvement in durability.

[0117] In addition, by providing a hard plate 32 to the flexible shell 10, an effect of dispersing pressure inside the shoe 1A can be obtained, so that large deformation of the shell 10 can be locally suppressed, and as a result, the shell 10 can be deformed more uniformly.

[0118] <Fixing Structure of Heel Counter for G. Shell and Upper Body> FIG. 13 is a cross-sectional view for explaining the fixing structure of the heel counter for the shell and the upper body in the shoe shown in FIG. 1. Further, FIG. 14 is a schematic view for explaining the outline of the fixing structure shown in FIG. 13. Next, with reference to FIGS. 13 and 14 and the aforementioned FIGS. 1 to 8, the fixing structure of the heel counter 50 for the shell 10 and the upper body 20 in the shoe 1A according to the present embodiment will be described in detail.

[0119] As shown in FIGS. 1 to 8, in the shoe 1A according to the present embodiment, a belt-shaped tightening portion 24 is provided at the rear end portion in the front-rear direction X and the upper end portion in the vertical direction Z of the upper body 20. The tightening portion 24 is for fixing the heel counter 50 to the upper body 20 and the shell 10.

[0120] As shown in FIGS. 13 and 14, one end in the extending direction of the tightening portion 24 is fixed to the rear side wall portion 22C of the upper body 20. The upper body 20 has the lower wall portion 21 and the side wall portion 22 described above as the main body portion, and the tightening portion 24 is provided on the main body portion of the upper body 20 by being fixed to the rear side wall portion 22C of the side wall portion 22. The fixing of the tightening portion 24 to the rear side wall portion 22C may be performed by any method, but preferably, sewing can be used.

[0121] Here, the above-mentioned one end of the tightening portion 24 is overlapped by being folded back. By integrally fixing the folded and overlapped portion to the outer peripheral surface 22b of the rear side wall portion 22C (in FIG. 14, the sewing portion between the rear side wall portion 22C and the tightening portion 24 is indicated by reference numeral A), the entire overlapped portion constitutes the base end 24a of the tightening portion 24 as a fixed end. On the other hand, the other end in the extending direction of the tightening portion 24 is pulled out from the rear side wall portion 22C by a predetermined length, and the entire pulled-out portion constitutes the tip end 24b of the tightening portion 24 as a free end.

[0122] On one hand, at the rear end in the front-rear direction X of the heel counter 50 and at the upper end in the vertical direction Z, a through-hole-shaped insertion portion 56 is provided. This insertion portion 56 is provided in the above-described third portion 51C of the surrounding portion 51 of the heel counter 50, and has a slit-like shape extending generally along the left-right direction Y corresponding to the belt-like tightening portion 24.

[0123] Also, at the rear end in the front-rear direction X of the shell 10 and at the upper end in the vertical direction Z, a through-hole-shaped insertion portion 16 is provided. This insertion portion 16 is provided in the rear side peripheral wall portion 12C of the peripheral wall portion 12 of the shell 10, and has a slit-like shape extending generally along the left-right direction Y corresponding to the belt-like tightening portion 24.

[0124] The insertion portion 56 provided in the heel counter 50 and the insertion portion 16 provided in the shell 10 are provided at generally the same positions in the vertical direction Z and the left-right direction Y. Thereby, these insertion portions 56, 16 face each other in the front-rear direction X.

[0125] The tip 24b of the above-described tightening portion 24 is inserted into these insertion portions 56, 16, and the tip 24b of the tightening portion 24 in the portion inserted into the insertion portions 56, 16 and drawn out to the outside of the shell 10 reaches the base end 24a by being further folded back.

[0126] Here, a male-type hook-and-loop fastener is provided on one of the base end 24a and the tip 24b of the tightening portion 24, and a female-type hook-and-loop fastener is provided on the other of the base end 24a and the tip 24b of the tightening portion 24. Therefore, the portion of the tip 24b that is inserted into the insertion portions 56, 16 and folded back to reach the base end 24a is attached to the base end 24a by being overlapped with the base end 24a, and the above-described male-type hook-and-loop fastener and female-type hook-and-loop fastener are engaged with each other.

[0127] As a result, with the tightening portion 24 inserted into the insertion portions 56 and 16, the heel counter 50 and the shell 10 are tightened by the tightening portion 24, so that the heel counter 50 and the shell 10 are fixed to the upper body 20. In other words, the tightening portion 24 is provided on the upper body 20, and the heel counter 50 at a portion located above the insertion portion 56 in the vertical direction Z and the shell 10 at a portion located above the insertion portion 16 in the vertical direction Z are surrounded and held by the loop-shaped tip 24b formed by the tightening portion 24, so that the shell 10, the upper body 20, and the heel counter 50 are integrally fixed to each other.

[0128] Therefore, at the upper end portion on the rear end side of the shoe 1A provided with these tightening portions 24 and insertion portions 56 and 16, the heel counter 50 can be fixed to the shell 10 and the upper body 20, and it is possible to prevent the heel counter 50 from being displaced at the upper end portion on the rear end side of the shoe 1A.

[0129] In addition, in the shoe 1A according to the present embodiment, as described above, the sole body 30 is sandwiched between the pressing surface 14 and the bottom wall portion 11 with the flare-shaped protruding portions 52 of the upper body 20 and the heel counter 50 intervening in the rear foot portion R3, so that the sole body 30 is fixed to the shell 10 (see FIGS. 6, 7, and 9). In other words, the heel counter 50 is fixed to the shell 10 and the upper body 20 by the flare-shaped protruding portion 52 being sandwiched between the pressing surface 14 and the bottom wall portion 11.

[0130] Here, as described above, the flare-shaped protruding portion 52 is provided over the entire circumference of the lower end of the surrounding portion 51 of the heel counter 50. Therefore, at the lower end portion on the rear end side of the shoe 1A provided with the protruding portion 52, the heel counter 50 can be fixed to the shell 10 and the upper body 20, and it is possible to prevent the heel counter 50 from being displaced at the lower end portion on the rear end side of the shoe 1A.

[0131] Therefore, by adopting the above configuration, the heel counter 50 can be stably fixed to the shell 10 and the upper body 20 at the upper end portion and the lower end portion on the rear end side of the shoe 1A, and the shoe 1A can be made such that the fit to the wearer's foot and the stability at the time of landing are greatly improved.

[0132] Here, the fixing structure of the heel counter 50 to the shell 10 and the upper body 20 described above can stably fix the heel counter 50 to the shell 10 and the upper body 20 without using an adhesive. In this regard, compared with the case where these fixings are performed using an adhesive, the amount of organic solvent used can be significantly reduced. Therefore, by adopting the above configuration, the environmental load can be reduced compared to the prior art.

[0133] <H. Others> The shoe 1A according to the present embodiment has the following characteristic configurations in addition to the above-described characteristic configurations.

[0134] As shown in FIG. 11, in the shoe 1A according to the present embodiment, a portion having a greater thickness than other portions is provided in a part of the peripheral wall portion 12 of the shell 10. This thick portion is a portion located on the rear side in the front-rear direction X with respect to the portion covering the inner ankle endpoint (the apex of the inner ankle) of the wearer's foot in the inner foot side peripheral wall portion 12A (this portion is the portion marked with the thickness dimension T1 in the figure), and a portion located on the rear side in the front-rear direction X with respect to the portion covering the outer ankle endpoint (the apex of the outer ankle) of the wearer's foot in the outer foot side peripheral wall portion 12B (this portion is the portion marked with the thickness dimension T2 in the figure).

[0135] The reason for making the thickness of these parts thicker than that of other parts is that there is a depression in the circumferential surface of the wearer's foot, at a position behind the inner and outer malleolus endpoints, and a gap is likely to occur between the wearer's foot and the shoe 1A at this part, which may impair the fit. That is, by increasing the thickness of the shell 10 at the part corresponding to the depression (in particular, making the peripheral wall portion 12 bulge inwardly of the shell 10), the occurrence of the above-described gap can be reduced, and further improvement in fit can be achieved.

[0136] <I. Other aspects of the shell> FIG. 15 is a perspective view showing another aspect of the shell of the shoe shown in FIG. 1. Hereinafter, with reference to this FIG. 15, another aspect of the shell 10 of the shoe 1A according to the present embodiment will be described.

[0137] In the present embodiment, as an example, the case where the shell 10 provided in the shoe 1A has the form as illustrated in FIGS. 1 to 4 etc. has been described, but as the shell 10, various forms can be used as long as it has flexibility. As an example, it may be possible to use a shell 10A as shown in FIG. 15.

[0138] The shell 10A shown in FIG. 15 is configured such that the portion excluding the above-described mesh-like structure portion 10b is a three-dimensional mesh structure. Here, the three-dimensional mesh structure is formed by arranging a plurality of predetermined unit structures repeatedly adjacent to each other, and such a three-dimensional structure like this three-dimensional mesh structure is also referred to as a lattice structure or a three-dimensional lattice structure. More specifically, the three-dimensional mesh structure includes a plurality of wire elements connected so as to intersect each other, and thereby has intersections formed by the intersection of the wire elements and hole portions 10c located between adjacent wire elements.

[0139] Therefore, when the shell 10A is configured as a three-dimensional mesh structure in this way, innumerable holes 10c are formed so as to reach the inner surface (that is, the inner surface 11a of the bottom wall portion 11 and the inner peripheral surface 12a of the peripheral wall portion 12) and the outer surface (that is, the outer surface 11b of the bottom wall portion 11 and the outer peripheral surface 12b of the peripheral wall portion 12). Note that the shell 10A having such a structure can be manufactured relatively easily by shaping using the three-dimensional laminated manufacturing apparatus described above.

[0140] By configuring the shell 10A as a three-dimensional mesh structure in this way, the shell 10A has sufficient strength while having appropriate flexibility, and moreover, the weight of the shoe 1A can be reduced and the breathability can be improved. In addition, since the upper body 20 housed in the internal space of the shell 10A can be visually recognized from the outside through the innumerable holes 10c, the design can be improved.

[0141] Here, in the case of shaping using a three-dimensional laminated manufacturing apparatus, especially when manufacturing the shell 10A described above by a stereolithography method, various contrivances are required to perform stable shaping. As one of them, when shaping a wire element having a section with a sparse connection to other wire elements and having a certain length or more and the section extending at an inclination of 45° or more with respect to the shaping direction, there is a problem that shaping defects occur due to the self-weight of the wire element. Here, the shaping direction means the lamination direction during the shaping of the shaped object to be laminated, and coincides with the normal direction of the main surface of the platform of the three-dimensional laminated manufacturing apparatus.

[0142] This type of problem frequently occurs at the mouth portion 10a when the shell 10A is shaped with the front-rear direction X as the shaping direction. A loop-shaped wire element 10a1 that connects the upper ends of the peripheral wall portion 12 is formed at this mouth portion 10a. However, this wire element 10a1 has a sparse connection to other wire elements compared to other portions of the shell 10A, and therefore, the above-described problem can occur.

[0143] In this regard, as shown in the figure, if the mouth part 10a is configured to have an elongated shape in the front-rear direction X and there is no extreme change in the height from the ground plane 3 at individual points in the circumferential direction of the mouth part 10a, then the loop-shaped wire element 10a1 connecting the upper ends of the peripheral wall part 12 will hardly contain a portion extending at an angle of 45° or more with respect to the above-described shaping direction, and the occurrence of the above-described shaping defect can be significantly suppressed.

[0144] Also, even when shaping a portion inclined at 45° or more with respect to the shaping direction, if there is already a shaped portion at a position on the opposite side of the shaping progress direction (the vertically downward direction in which the shaping progresses) of the portion (that is, the position on the vertically upward side), the shaping defect as described above is unlikely to occur. This is because the shaped portion supports the newly shaped portion, making it difficult for the deformation due to its own weight as described above to occur. Here, the case where there is already a shaped portion at a position on the opposite side of the shaping progress direction of the portion to be shaped is referred to as Case 1.

[0145] On the other hand, when shaping a portion inclined at 45° or more with respect to the shaping direction, if there is no shaped portion or only a small amount of shaped portion at a position on the opposite side of the shaping progress direction of the portion, the shaping defect as described above is likely to occur. This is because there is no or almost no portion supporting the newly shaped portion, and the deformation due to its own weight as described above is likely to occur. Here, the case where there is no or almost no shaped portion at a position on the opposite side of the shaping progress direction of the portion to be shaped is referred to as Case 2.

[0146] Regarding this point, considering that the wire element 10a1 constituting the mouth part 10a described above necessarily extends in a direction intersecting the shaping direction, it is advisable to determine how to arrange the wire element 10a1 by judging whether each part of the wire element 10a1 to be arranged corresponds to Case 1 or Case 2 described above. That is, in the part corresponding to Case 1, the extending direction of the wire element 10a1 may be inclined by 45° or more with respect to the shaping direction without being restricted, and in the part corresponding to Case 2, the inclination of the extending direction of the wire element 10a1 with respect to the shaping direction may be set to less than 45°.

[0147] In addition, the shell 10A described above is configured with a three-dimensional mesh structure (i.e., a three-dimensional lattice structure) for the part excluding the mesh-like structure part 10b described above, but this part may be configured with a structure having a three-dimensional wall structure instead of this three-dimensional mesh structure.

[0148] Here, the three-dimensional wall structure is formed by a three-dimensional shape with a unit structure formed by a wall whose outer shape is defined by a pair of parallel curved surfaces or planes, and a plurality of such unit structures are repeatedly arranged adjacent to each other. Specific examples in that case include, for example, those obtained by adding thickness to a triply periodic minimal surface such as a gyroid structure, a Schwarz P structure, or a Schwarz D structure, or those obtained by adding thickness to a structure such as an octet structure, a cubic structure, or a Kelvin structure.

[0149] Also, it is possible to configure a part of the shell with a three-dimensional mesh structure (i.e., a three-dimensional lattice structure) and configure another part of the shell with a structure having a three-dimensional wall structure.

[0150] Furthermore, when at least a part of the shell is configured with a three-dimensional mesh structure, for example, the thickness of the wire elements described above may be partially changed, or the size of the unit structure may be partially changed. With this configuration, it is possible to change the physical properties (such as rigidity) of each part of the shell. Also, when at least a part of the shell is configured with a structure having a three-dimensional wall structure, for example, the thickness of the wall described above may be partially changed, or the size of the unit structure may be partially changed. With this configuration, it is possible to change the physical properties (such as rigidity) of each part of the shell.

[0151] FIG. 16 is a schematic cross-sectional view near the mouth showing still another aspect of the shell of the shoe shown in FIG. 1. Hereinafter, with reference to this FIG. 16, still another aspect of the shell 10 of the shoe 1A according to the present embodiment will be described.

[0152] The shell 10B1 shown in FIG. 16(A) is provided with a cutout portion 17 at the front end of the mouth portion 10a, and the thickness of the peripheral wall portion 12 of the portion defining the mouth portion 10a is relatively thin at the front end side portion adjacent to the cutout portion 17 and relatively thick at the remaining portion.

[0153] The shell 10B2 shown in FIG. 16(B) is provided with a cutout portion 17 at the front end of the mouth portion 10a, and the thickness of the peripheral wall portion 12 of the portion defining the mouth portion 10a is relatively thin at the front end side portion adjacent to the cutout portion 17 and at the rear end side portion of the mouth portion 10a, and relatively thick at the remaining portion.

[0154] The shell 10B3 shown in FIG. 16(C) is configured such that the mouth portion 10a is in a closed loop shape (i.e., annular), and the thickness of the peripheral wall portion 12 of the portion defining the mouth portion 10a is relatively thin at the front end side portion and relatively thick at the remaining portion.

[0155] Thus, by providing the cutout portion 17 at a predetermined position of the peripheral wall portion 12 of the portion defining the mouth portion 10a or by thinning the thickness of the predetermined position of the peripheral wall portion 12 of the portion defining the mouth portion 10a, the portion becomes more deformable, so that the shoe 1A can be put on and taken off more easily. On the other hand, by sufficiently thickening the inner-foot-side peripheral wall portion 12A and the outer-foot-side peripheral wall portion 12B of the portion defining the mouth portion 10a or by forming the mouth portion 10a in a closed-loop shape, it becomes possible to effectively suppress the collapse of the wearer's ankle (so-called pronation) that may occur during landing. Further, by providing a thick portion on the peripheral wall portion 12 of the portion defining the mouth portion 10a, it is possible to effectively suppress the wearer's foot from slipping out of the shoe 1A during running or walking. Furthermore, by thinning the thickness of the rear end of the mouth portion 10a, it is possible to avoid applying excessive pressure to the Achilles tendon.

[0156] FIG. 17 is a side view seen from the outer-foot side showing still another aspect of the shell of the shoe shown in FIG. 1. Hereinafter, with reference to this FIG. 17, still another aspect of the shell 10 of the shoe 1A according to the present embodiment will be described.

[0157] In the shell 10C1 shown in FIG. 17(A), a plurality of cutout portions 18 are provided at the upper end of the peripheral wall portion 12 which is the portion defining the mouth portion 10a and are located along the circumferential direction of the mouth portion 10a. Each of these plurality of cutout portions 18 is formed by providing a notch-shaped portion in a part of the upper end of the peripheral wall portion 12, whereby the upper end of the peripheral wall portion 12 at the portion where the cutout portion 18 is located is provided at a position lower than the upper ends of the other portions of the peripheral wall portion 12.

[0158] In the shell 10C1, one cutout portion 18 is provided in each of the inner-foot-side peripheral wall portion 12A and the outer-foot-side peripheral wall portion 12B, and both of them are located in the rear-foot portion R3. Note that no cutout portion 18 is provided in the rear-side peripheral wall portion 12C and the front-side peripheral wall portion 12D, and the upper ends of the peripheral wall portion 12 of this portion are arranged at relatively high positions.

[0159] The shell 10C2 shown in Fig. 17(B) has its mouth part 10a located across the front foot part R1, the middle foot part R2, and the rear foot part R3. At the upper end of the peripheral wall part 12 which is the part defining this mouth part 10a, a plurality of cutout parts 18 are provided along the circumferential direction of the mouth part 10a. Each of these plurality of cutout parts 18 is also constituted by providing a notch-shaped part at a part of the upper end of the peripheral wall part 12. As a result, the upper end of the peripheral wall part 12 at the part where the cutout part 18 is located is provided at a position lower than the upper end of the other part of the peripheral wall part 12.

[0160] In the case of the shell 10C2, two cutout parts 18 are provided in each of the inner foot side peripheral wall part 12A and the outer foot side peripheral wall part 12B. One of them is located across the front foot part R1 and the middle foot part R2, and the other is located at the rear foot part R3. Note that no cutout part 18 is provided in the rear side peripheral wall part 12C and the front side peripheral wall part 12D, and the upper end of the peripheral wall part 12 at this part is arranged at a relatively high position.

[0161] The shell 10C3 shown in Fig. 17(C) has its mouth part 10a located across the front foot part R1, the middle foot part R2, and the rear foot part R3. At the upper end of the peripheral wall part 12 which is the part defining this mouth part 10a, a larger cutout part 18 is provided along the circumferential direction as compared with the above-described shells 10B1 and 10B2. The cutout part 18 is also constituted by providing a notch-shaped part at a part of the upper end of the peripheral wall part 12. As a result, the upper end of the peripheral wall part 12 at the part where the cutout part 18 is located is provided at a position lower than the upper end of the other part of the peripheral wall part 12.

[0162] In the case of the shell 10C3, the cutout part 18 is provided so as to straddle the inner foot side peripheral wall part 12A, the outer foot side peripheral wall part 12B, and the front side peripheral wall part 12D. Note that no cutout part 18 is provided in the rear side peripheral wall part 12C, and the upper end of the peripheral wall part 12 at this part is arranged at a relatively high position.

[0163] In this way, by providing the cutout portion 18 at the upper end of the peripheral wall portion 12, the shoe 1A is more likely to deform at the portion where the cutout portion 18 is provided. As a result, the mouth portion 10a is more likely to open, and the effect that it becomes easier for the wearer's foot to be inserted into the above-described insertion space SP3 is obtained. Furthermore, the bending of the shoe 1A during running or walking is less likely to be inhibited, and the effect that the shoe 1A more easily follows the movement of the foot is also obtained.

[0164] Here, in the case of providing the cutout portion 18 in the peripheral wall portion 12 of the portion defining the mouth portion 10a as in the above-described shells 10C1 to 10C3, and when the shells 10C1 to 10C3 are configured by a three-dimensional mesh structure using a stereolithography-based three-dimensional laminated fabrication method, it is important to consider how to arrange the wire elements 10a1 (see FIG. 15) constituting the mouth portion 10a. For this consideration, the above-described design method of determining whether each part corresponds to Case 1 or Case 2 and performing the design can be preferably used.

[0165] Further, it is preferable that at least a part of the upper end of the peripheral wall portion 12 of the portion defining the mouth portion 10a is provided at a position higher than the position corresponding to the RR line of the wearer's foot (in FIG. 17, this position is indicated by a two-dot chain line with the symbol RR). Here, the RR line is obtained by acquiring a cross-section of the foot orthogonal to the foot length direction at each point in the foot length direction of the foot of a standard wearer having a foot of a size suitable for the shoe 1A, and in each of the plurality of acquired cross-sections, the inner foot side end point located on the most medial side of the wearer's foot and the outer foot side end point located on the side opposite to the most medial side are extracted, and further, a curve obtained by connecting these extracted plurality of inner foot side end points and plurality of outer foot side end points.

[0166] In this way, by arranging the upper end of the peripheral wall portion 12 of the portion defining the mouth portion 10a at a position higher than the above RR line, the peripheral surface of the wearer's foot is covered by the peripheral wall portion 12 at a position higher than this RR line. Therefore, it becomes possible to effectively suppress the tilting (so-called pronation) of the wearer's ankle that may occur during landing.

[0167] (First to Fourth Modification Examples) FIG. 18 is a schematic view showing the formation range of the pressing surface provided on the peripheral wall portion of the shell of the shoe according to the first modification example and the second modification example, and FIG. 19 is a schematic view showing the formation range of the pressing surface provided on the peripheral wall portion of the shell of the shoe according to the third modification example and the fourth modification example. Further, FIG. 20 is a schematic view showing the formation range of the pressing surface provided on the peripheral wall portion of the shell of the shoe according to the fifth modification example. Hereinafter, with reference to FIGS. 18 to 20, shoes 1A1 to 1A5 according to the first to fifth modification examples based on the above-described Embodiment 1 will be described. Note that the shoes 1A1 to 1A5 according to these first to fifth modification examples are different in the formation range of the pressing surface 14 due to the different positions where the constricted portion 13A is provided, only in this respect, their configurations are different when compared with the shoe 1A according to the above-described Embodiment 1.

[0168] As shown in FIG. 18(A), in the shoe 1A1 according to the first modification example, one pressing surface 14 (that is, one inner-foot-side pressing surface 14A and one outer-foot-side pressing surface 14B) is provided on each of the inner-foot-side peripheral wall portion 12A and the outer-foot-side peripheral wall portion 12B. These two mutually independent pressing surfaces 14 are both positioned so as to extend relatively long along the circumferential direction of the peripheral wall portion 12, while the amount of protrusion toward the inside of the shell 10 is configured to be relatively small.

[0169] As shown in FIG. 18(B), in the shoe 1A2 according to the second modification example, one pressing surface 14 (that is, one inner-foot-side pressing surface 14A, one outer-foot-side pressing surface 14B, and one rear-side pressing surface 14C) is provided on each of the inner-foot-side peripheral wall portion 12A, the outer-foot-side peripheral wall portion 12B, and the rear-side peripheral wall portion 12C. These three mutually independent pressing surfaces 14 are both positioned so as to extend relatively long along the circumferential direction of the peripheral wall portion 12, while the amount of protrusion toward the inside of the shell 10 is configured to be relatively small.

[0170] As shown in Fig. 19(A), the shoe 1A3 according to the third modification example has a pressing surface 14 provided over the entire circumference of the peripheral wall portion 12. That is, an inner-foot-side pressing surface 14A, an outer-foot-side pressing surface 14B, a rear-side pressing surface 14C, and a front-side pressing surface 14D are provided on the inner-foot-side peripheral wall portion 12A, the outer-foot-side peripheral wall portion 12B, the rear-side peripheral wall portion 12C, and the front-side peripheral wall portion 12D, respectively, and these inner-foot-side pressing surface 14A, outer-foot-side pressing surface 14B, rear-side pressing surface 14C, and front-side pressing surface 14D extend continuously along the circumferential direction of the peripheral wall portion 12. This continuous pressing surface 14 is positioned to extend long along the circumferential direction of the peripheral wall portion 12, while the amount of protrusion toward the inside of the shell 10 is configured to be relatively small.

[0171] As shown in Fig. 19(B), the shoe 1A4 according to the fourth modification example has three independent pressing surfaces 14 (i.e., three inner-foot-side pressing surfaces 14A and three outer-foot-side pressing surfaces 14B) provided on each of the inner-foot-side peripheral wall portion 12A and the outer-foot-side peripheral wall portion 12B. These six independent pressing surfaces 14 are all positioned to extend relatively short along the circumferential direction of the peripheral wall portion 12, while the amount of protrusion toward the inside of the shell 10 is configured to be relatively large.

[0172] Note that the three inner-foot-side pressing surfaces 14A provided on the inner-foot-side peripheral wall portion 12A and the three outer-foot-side pressing surfaces 14B provided on the outer-foot-side peripheral wall portion 12B are provided at positions facing each other in the left-right direction Y. When configured in this way, it is possible to suppress an increase in the bending rigidity of the shoe 1A4 due to the provision of the pressing surface 14, making it difficult to inhibit the bending of the shoe 1A4 during running or walking, and making it easier for the shoe 1A4 to follow the movement of the foot.

[0173] As shown in FIG. 20, the shoe 1A5 according to the fifth modification has five independent pressing surfaces 14 (i.e., three inner-foot-side pressing surfaces 14A and two outer-foot-side pressing surfaces 14B) provided on the inner-foot-side peripheral wall portion 12A and the outer-foot-side peripheral wall portion 12B. These five mutually independent pressing surfaces 14 are all positioned so as to extend relatively short along the circumferential direction of the peripheral wall portion 12, while the protruding amount toward the inside of the shell 10 is configured to be relatively large.

[0174] Note that the three inner-foot-side pressing surfaces 14A provided on the inner-foot-side peripheral wall portion 12A and the two outer-foot-side pressing surfaces 14B provided on the outer-foot-side peripheral wall portion 12B are provided at alternating positions along the front-rear direction X. When configured in this way, it is possible to suppress an increase in the bending rigidity of the shoe 1A5 due to the provision of the pressing surface 14, making it difficult to inhibit the bending of the shoe 1A5 during running or walking, and making it easier for the shoe 1A5 to follow the movement of the foot. Furthermore, compared with the shoe 1A4 according to the fourth modification described above, it is also possible to prevent the bending rigidity from changing extremely for each part.

[0175] Even when adopting the configurations such as these first to fifth modifications, it is possible to obtain the same effects as those described in the above-described Embodiment 1. Since the sole body 30 can be stably fixed to the shell 10, the fit to the wearer's foot and the stability at the time of landing are significantly improved, and the shoes 1A1 to 1A5 can be made to reduce the environmental load more than before. In particular, when configuring the formation range of the pressing surface 14 in the circumferential direction of the peripheral wall portion 12 to be short as in the fourth and fifth modifications, it is possible to achieve both the facilitation of the fitting operation of the sole body 30 and the stable fixation of the sole body 30 by increasing the protruding amount of the pressing surface 14.

[0176] Here, when providing the inner foot side pressing surface 14A and the outer foot side pressing surface 14B on the inner foot side peripheral wall portion 12A and the outer foot side peripheral wall portion 12B respectively, these inner foot side pressing surface 14A and outer foot side pressing surface 14B may be provided at positions facing each other in the left - right direction Y. By configuring in this way, since the inner foot side pressing surface 14A and the outer foot side pressing surface 14B are positioned so as to connect the inner foot side end portion and the outer foot side end portion of the sole body 30 at the shortest distance, it is possible to effectively suppress the end portion of the sole body 30 from coming out from the space below these. Therefore, by configuring in this way, it is possible to prevent the sole body 30 from falling off from the shell 10, and the sole body 30 can be fixed to the shell 10 more stably.

[0177] (Sixth Modification Example) FIG. 21 is an enlarged cross - sectional view of a main part of a shoe according to the sixth modification example. Further, FIG. 22 is a schematic view showing a first example and a second example of the formation range of the pressing surface and the ridge provided on the peripheral wall portion of the shell of the shoe shown in FIG. 21, and FIG. 23 is a schematic view showing a third example and a fourth example of the formation range of the pressing surface and the ridge provided on the peripheral wall portion of the shell of the shoe shown in FIG. 21. Hereinafter, with reference to FIGS. 21 to 23, shoes 1A6, 1A6a - 1A6d according to the sixth modification example based on the above - described Embodiment 1 will be described. The shoes 1A6, 1A6a - 1A6d according to the sixth modification example are basically different in configuration only in that the shape of the inner edge portion of the pressing surface 14 is different when compared with the shoe 1A according to the above - described Embodiment 1.

[0178] As shown in FIG. 21, in the shoe 1A6 according to the sixth modification example, a solid - shaped ridge portion 15 extending along the circumferential direction of the peripheral wall portion 12 is provided at a position along the inner edge portion of the pressing surface 14 provided on the peripheral wall portion 12 of the shell 10. Here, the inner edge portion of the pressing surface 14 means the boundary portion between the lower surface (that is, the pressing surface 14) and the upper surface of the constricted portion 13A. The inner edge portion of this pressing surface 14 extends so as to form a ridge line along the circumferential direction of the peripheral wall portion 12, and the above - described ridge portion 15 also extends along the extending direction of this inner edge portion.

[0179] This rib portion 15 has, so to speak, a stopper function. By providing this rib portion 15, it is possible to effectively suppress the end portion of the sole body 30 from coming out of the space below the pressing surface 14. Therefore, by configuring in this way, it is possible to prevent the sole body 30 from falling off from the shell 10, and the sole body 30 can be more stably fixed to the shell 10.

[0180] Here, as shown in FIGS. 22 and 23, the formation range of the rib portion 15 can be variously changed according to the formation range and shape of the pressing surface 14 provided on the peripheral wall portion 12. In FIGS. 22 and 23, for ease of understanding, the formation range of the rib portion 15 is represented by a thick solid line.

[0181] In the shoe 1A6a according to the first example shown in FIG. 22(A), similar to the case of the shoe 1A according to the above-described Embodiment 1, as the pressing surface 14, an inner foot side pressing surface 14A, an outer foot side pressing surface 14B, and a rear side pressing surface 14C are provided on the peripheral wall portion 12, and no pressing surface is provided on the front side peripheral wall portion 12D of the peripheral wall portion 12. These inner foot side pressing surface 14A, outer foot side pressing surface 14B, and rear side pressing surface 14C extend continuously along the circumferential direction of the peripheral wall portion 12.

[0182] In the shoe 1A6a, the above-described rib portion 15 is provided at the portion where these pressing surfaces 14 are formed on the peripheral wall portion 12. That is, the rib portion 15 extends along the circumferential direction of the peripheral wall portion 12 from the rear end side portion in the front-rear direction X of the inner foot side peripheral wall portion 12A of the portion included in the front foot portion R1, via the rear end position PR, to the rear end side portion in the front-rear direction X of the outer foot side peripheral wall portion 12B of the portion included in the front foot portion R1.

[0183] In the shoe 1A6b according to the second example shown in Fig. 22(B), similar to the case of the shoe 1A according to the above-described Embodiment 1, as the pressing surface 14, an inner-foot-side pressing surface 14A, an outer-foot-side pressing surface 14B, and a rear-side pressing surface 14C are provided on the peripheral wall portion 12, and no pressing surface is provided on the front-side peripheral wall portion 12D of the peripheral wall portion 12. These inner-foot-side pressing surface 14A, outer-foot-side pressing surface 14B, and rear-side pressing surface 14C extend continuously along the circumferential direction of the peripheral wall portion 12.

[0184] In the shoe 1A6b, the above-described ridge portion 15 is provided at the portion of the peripheral wall portion 12 where these pressing surfaces 14 are formed, and the ridge portion 15 is also continuously provided at the portion where the pressing surface 14 is not formed. That is, in the shoe 1A6b, the ridge portion 15 is located over the entire circumference along the circumferential direction of the peripheral wall portion 12. Here, the ridge portion 15 provided at the portion where the pressing surface 14 is not formed is solid as is the ridge portion 15 provided at the portion where the pressing surface 14 is formed, and is provided so as to protrude from the inner peripheral surface 12a of the peripheral wall portion 12.

[0185] In the shoe 1A6c according to the third example shown in Fig. 23(A), similar to the case of the shoe 1A4 according to the above-described fourth modification, as the pressing surface 14, three mutually independent inner-foot-side pressing surfaces 14A provided on the inner-foot-side peripheral wall portion 12A and three mutually independent outer-foot-side pressing surfaces 14B provided on the outer-foot-side peripheral wall portion 12B are provided.

[0186] In the shoe 1A6c, the above-described ridge portion 15 is provided at the portion of the peripheral wall portion 12 where these pressing surfaces 14 are formed. That is, the ridge portion 15 is provided on the inner-foot-side peripheral wall portion 12A and the outer-foot-side peripheral wall portion 12B corresponding to each of the pressing surfaces 14 provided on the inner-foot-side peripheral wall portion 12A and the outer-foot-side peripheral wall portion 12B.

[0187] In the shoe 1A6d according to the fourth example shown in Fig. 23(B), similar to the case of the shoe 1A4 according to the above-described fourth modification, as the pressing surfaces 14, there are provided three independent inner-foot-side pressing surfaces 14A provided on the inner-foot-side peripheral wall portion 12A and three independent outer-foot-side pressing surfaces 14B provided on the outer-foot-side peripheral wall portion 12B.

[0188] In the shoe 1A6d, the above-described ridge portion 15 is provided at the portion of the peripheral wall portion 12 where these pressing surfaces 14 are formed, and the ridge portion 15 is continuously provided also at the portion where the pressing surface 14 is not formed. That is, in the shoe 1A6d, the ridge portion 15 is located over the entire circumference along the circumferential direction of the peripheral wall portion 12. Here, the ridge portion 15 provided at the portion where the pressing surface 14 is not formed is solid as is the ridge portion 15 provided at the portion where the pressing surface 14 is formed, and is provided so as to protrude from the inner circumferential surface 12a of the peripheral wall portion 12.

[0189] Even when adopting the configuration as in the sixth modification described above, the same effects as those described in the above-described Embodiment 1 can be obtained, and the sole body 30 can be stably fixed to the shell 10, so that the fit to the wearer's foot and the stability at the time of landing are greatly improved, and the shoes 1A6, 1A6a to 1A6d with reduced environmental load compared to the conventional ones can be obtained. In particular, by providing the ridge portion 15 also at the portion where the pressing surface 14 is not formed as in the second and fourth examples, it is possible to achieve both the facilitation of the fitting operation of the sole body 30 and the stable fixing of the sole body 30.

[0190] (Seventh Modification) Fig. 24 is a cross-sectional view of a shoe according to the seventh modification. Hereinafter, with reference to this Fig. 24, the shoe 1A7 according to the seventh modification based on the above-described Embodiment 1 will be described. Note that the shoe 1A7 according to the seventh modification is different only in the configuration of the member housed inside the shell 10 when compared with the shoe 1A according to the above-described Embodiment 1.

[0191] As shown in FIG. 24, in the shoe 1A7 according to the seventh modification, the sole body 30 is constituted only by the midsole 31 as a cushioning material, and the sole body 30 does not include the plate 32 (see FIG. 7 etc.) as a repellent material. Therefore, the lower surface of the sole body 30 is defined by the bottom surface 31b of the midsole 31, and the bottom surface 31b of this midsole 31 is covered by the lower wall portion 21 of the upper body 20.

[0192] Even in such a configuration, effects similar to those described in the above-described first embodiment can be obtained. Since the sole body 30 can be stably fixed to the shell 10, the fit to the wearer's foot and the stability at landing are significantly improved, and the shoe 1A7 can be made to have a reduced environmental load compared to the conventional one.

[0193] (Eighth Modification) FIG. 25 is a cross-sectional view of a shoe according to the eighth modification. Hereinafter, with reference to this FIG. 25, the shoe 1A8 according to the eighth modification based on the above-described first embodiment will be described. Note that the shoe 1A8 according to the eighth modification is different only in the configuration of the members housed inside the shell 10 when compared with the shoe 1A7 according to the above-described seventh modification.

[0194] As shown in FIG. 25, in the shoe 1A8 according to the eighth modification, the sole body 30 does not have the plate 32 (see FIG. 7 etc.) as a repellent material, and the shoe 1A8 does not include a heel counter 50 (see FIG. 24 etc.). Therefore, in the rear foot portion R3, similarly to the midfoot portion R2, the sole body 30 is sandwiched between the pressing surface 14 and the bottom wall portion 11 only in a state where the upper body 20 is interposed (that is, in a state where the heel counter 50 is not interposed).

[0195] Even in such a configuration, effects similar to those described in the above-described first embodiment can be obtained. Since the sole body 30 can be stably fixed to the shell 10, the fit to the wearer's foot and the stability at landing are significantly improved, and the shoe 1A8 can be made to have a reduced environmental load compared to the conventional one.

[0196] (The 9th modification example) FIG. 26 is a cross-sectional view of a shoe according to the 9th modification example. Hereinafter, with reference to this FIG. 26, the shoe 1A9 according to the 9th modification example based on the above-described Embodiment 1 will be described. Note that the shoe 1A9 according to the 9th modification example is different only in the configuration of the members housed inside the shell 10 when compared with the shoe 1A8 according to the above-described 8th modification example.

[0197] As shown in FIG. 26, in the shoe 1A9 according to the 9th modification example, the sole body 30 does not have the plate 32 (see FIG. 7 etc.) as a cushioning material, the shoe 1A9 does not include a heel counter 50 (see FIG. 24 etc.), and further does not include an additional sole body 40 (see FIG. 25 etc.). Therefore, in the midfoot part R2 and the rearfoot part R3, similar to the forefoot part R1, the lower wall part 21 of the upper body 20 is directly covered by the bottom wall part 11 of the shell 10.

[0198] Even in such a configuration, effects similar to those described in the above-described Embodiment 1 can be obtained. Since the sole body 30 can be stably fixed to the shell 10, the fit to the wearer's foot and the stability at the time of landing are greatly improved, and the shoe 1A9 with a reduced environmental load compared to the conventional one can be obtained.

[0199] (The 10th modification example) FIG. 27 is an enlarged cross-sectional view of a main part of a shoe according to the 10th modification example. Hereinafter, with reference to this FIG. 27, the shoe 1A10 according to the 10th modification example based on the above-described Embodiment 1 will be described. Note that the shoe 1A10 according to the 10th modification example is different only in the configuration of the shell 10 when compared with the shoe 1A according to the above-described Embodiment 1.

[0200] As shown in Fig. 27, the shoe 1A10 according to the 10th modification example includes a shell 10A1 in which a portion excluding the mesh-like structure portion 10b is formed of a three-dimensional mesh structure body, similar to the shell 10A shown in Fig. 15. The shell 10A1 is different from the above-described shell 10A only in the configuration near the portion where the pressing surface 14 is formed in the peripheral wall portion 12.

[0201] Specifically, in the shell 10A1, a high-rigidity portion 19 is provided in a portion that defines the pressing surface 14 in the peripheral wall portion 12. The high-rigidity portion 19 is a portion configured to have higher rigidity than the peripheral wall portion 12 of the portion adjacent to the portion where the high-rigidity portion 19 is provided. This high-rigidity portion 19 is formed by configuring the occupancy ratio of the portion that defines the pressing surface 14 in the peripheral wall portion 12 to be higher than the occupancy ratio of the portion adjacent to the portion.

[0202] Here, the occupancy ratio represents the ratio of the volume of the portion with a solid (that is, the portion other than the above-described hole portion 10c) per a predetermined volume of the three-dimensional mesh structure body. Therefore, generally, a portion with a large occupancy ratio has high rigidity, and a portion with a small occupancy ratio has low rigidity. As a method of making the occupancy ratio different for each portion, for example, changing the size of the above-described unit structure for each portion, changing the thickness of the wire element included in the unit structure for each portion, or changing the structure of the unit structure itself for each portion can be considered. In addition, as a method of maximizing the rigidity of the high-rigidity portion 19, it is assumed that the high-rigidity portion 19 is configured to be solid (that is, a plate-like or block-like portion not including the hole portion 10c inside).

[0203] Thus, when the portion that defines the pressing surface 14 in the peripheral wall portion 12 is the high-rigidity portion 19, it becomes possible to suppress the deformation of the peripheral wall portion 12 of the portion where the pressing surface 14 is provided. Therefore, it is effectively possible to suppress the end portion of the sole body 30 from coming out from the space below the pressing surface 14. Therefore, by configuring in this way, it is possible to prevent the sole body 30 from falling off from the shell 10, and the sole body 30 can be more stably fixed to the shell 10.

[0204] Therefore, even when configured in this way, effects similar to those described in the above-described Embodiment 1 can be obtained. Since the sole body 30 can be stably fixed to the shell 10, the fit to the wearer's foot and the stability during landing are greatly improved, and the shoe 1A10 with a reduced environmental impact compared to the conventional one can be achieved.

[0205] (11th Modification Example) FIG. 28 is a cross-sectional view of a shoe according to the 11th modification example. Hereinafter, with reference to this FIG. 28, the shoe 1A11 according to the 11th modification example based on the above-described Embodiment 1 will be described. Note that the shoe 1A11 according to the 11th modification example is different only in the configuration of the members accommodated inside the shell 10 when compared with the shoe 1A according to the above-described Embodiment 1.

[0206] The shoe 1A according to the above-described Embodiment 1 has a configuration in which the upper body 20 is accommodated in the shell 10 and the sole body 30 is accommodated in the upper body 20 (see FIG. 7 and the like). However, as shown in FIG. 28, in the shoe 1A11 according to the 11th modification example, although the sole body 30 is accommodated in the shell 10, the upper body 20 has a configuration in which it is accommodated inside the shell 10 without accommodating the sole body 30 therein. That is, the sole body 30 is positioned so as to be sandwiched between the bottom wall portion 11 of the shell 10 and the lower wall portion 21 of the upper body 20, and the upper body 20 is disposed only in the upper side space SP2 of the internal space of the shell 10.

[0207] In this configuration, the upper surface of the sole body 30 defined by the top surface 31a of the midsole 31 is covered by the lower wall portion 21 of the upper body 20 except for the portion covered by the pressing surface 14 provided on the peripheral wall portion 12 of the shell 10. Along with this, the sole body 30 is directly sandwiched between the pressing surface 14 provided on the peripheral wall portion 12 and the bottom wall portion 11 without the upper body 20 intervening therebetween.

[0208] Therefore, even when configured in this way, effects similar to those described in the above-described Embodiment 1 can be obtained. Since the sole body 30 can be stably fixed to the shell 10, the fitness of the shoe for the wearer's foot and the stability during landing are significantly improved, and the shoe 1A11 with a reduced environmental impact compared to the prior art can be achieved.

[0209] (12th Modification Example) FIG. 29 is a cross-sectional view of a shoe according to the 12th modification example. Hereinafter, with reference to FIG. 29, the shoe 1A12 according to the 12th modification example based on the above-described Embodiment 1 will be described. Note that the shoe 1A12 according to the 12th modification example is different only in the configuration of the shell 10 when compared with the shoe 1A according to the above-described Embodiment 1.

[0210] The shoe 1A according to the above-described Embodiment 1 was exemplified as a case where the pressing surface 14 is formed by providing the constricted portion 13A (see FIGS. 5 to 7, etc.) at a predetermined portion of the peripheral wall portion 12 of the shell 10. However, as shown in FIG. 29, in the shoe 1A12 according to the 12th modification example, the pressing surface 14 is formed by providing the protruding portion 13B at a predetermined portion of the peripheral wall portion 12 of the shell 10.

[0211] More specifically, the protruding portion 13B protrudes toward the inside of the shell 10 (that is, toward the insertion space SP3). As a result, the inner peripheral surface 12a of the peripheral wall portion 12 at the portion where the protruding portion 13B is provided protrudes toward the inside of the shell 10. On the other hand, no depression or the like is provided on the outer peripheral surface 12b of the peripheral wall portion 12 at the portion where the protruding portion 13B is provided.

[0212] When configured in this way, by providing the protruding portion 13B on the peripheral wall portion 12, the inner peripheral surface 12a of the peripheral wall portion 12 includes a surface that extends toward the inside of the shell 10 and faces the bottom wall portion 11 side. The surface of the peripheral wall portion 12 that faces the bottom wall portion 11 side corresponds to the lower surface of the protruding portion 13B, and the lower surface of the protruding portion 13B functions as the pressing surface 14 for fixing the sole body 30.

[0213] Therefore, even when configured in this way, the same effects as those described in the above-described Embodiment 1 can be obtained, and the sole body 30 can be stably fixed to the shell 10, thereby greatly improving the fit to the wearer's foot and the stability at the time of landing. Also, the shoe 1A12 can be made to have a reduced environmental load compared to the prior art.

[0214] (Embodiment 2) FIG. 30 is a cross-sectional view of a shoe according to Embodiment 2. FIG. 31 is a schematic cross-sectional view taken along line XXXI-XXXI shown in FIG. 30. Further, FIG. 32 is a schematic view showing the formation range of a pressing surface provided on the peripheral wall portion of the shell of the shoe shown in FIG. 30. Next, with reference to FIGS. 30 to 32, the shoe 1B according to the present embodiment will be described. Note that the shoe 1B according to the present embodiment basically has a different configuration of the shell 10 when compared with the shoe 1A according to the above-described Embodiment 1.

[0215] The shoe 1A according to the above-described Embodiment 1 was an example of a case where the pressing surface 14 was formed by providing a constricted portion 13A (see FIGS. 5 to 7, etc.) at a predetermined portion of the peripheral wall portion 12 of the shell 10. However, as shown in FIGS. 30 to 32, the shoe 1B according to the present embodiment is configured such that the pressing surface 14 is formed by providing a connecting portion 13C on the peripheral wall portion 12.

[0216] More specifically, the connecting portion 13C is formed of a belt-like portion having one end connected to the inner-side peripheral wall portion 12A and the other end connected to the outer-side peripheral wall portion 12B. The connecting portion 13C is located substantially at the center in the front-rear direction X of the midfoot portion R2 and extends continuously from each of the inner-side peripheral wall portion 12A and the outer-side peripheral wall portion 12B. Thereby, the connecting portion 13C is positioned so as to bridge the inner-side peripheral wall portion 12A and the outer-side peripheral wall portion 12B along the left-right direction Y. Also, the connecting portion 13C is positioned at a distance from the bottom wall portion 11 by the thickness of the sole body 30 (that is, the dimension in the up-down direction Z of the sole body 30).

[0217] When configured in this way, the connecting portion 13C provided so as to bridge the inner foot side peripheral wall portion 12A and the outer foot side peripheral wall portion 12B includes a surface that is located so as to extend from the inner foot side peripheral wall portion 12A and the outer foot side peripheral wall portion 12B toward the inside of the shell 10 and faces the bottom wall portion 11 side. This surface facing the bottom wall portion 11 side corresponds to the lower surface of the connecting portion 13C, and the lower surface of the connecting portion 13C functions as a pressing surface 14 for fixing the sole body 30. The pressing surface 14 extends along the left-right direction Y.

[0218] Therefore, even when configured in this way, the same effects as those described in the above-described Embodiment 1 can be obtained, and the sole body 30 can be stably fixed to the shell 10, thereby greatly improving the fit to the wearer's foot and the stability at the time of landing. In addition, the shoe 1B can be made to reduce the environmental load more than before. Further, since the pressing surface 14 for fixing the sole body 30 can be integrally provided on the shell 10 at the time of manufacturing the shell 10, it is also possible to reduce the number of parts and simplify the manufacturing process.

[0219] Also, in the shoe 1B according to the present embodiment, since the connecting portion 13C is provided on the peripheral wall portion 12 so as to connect the inner foot side peripheral wall portion 12A and the outer foot side peripheral wall portion 12B as described above, it is also possible to suppress the inner foot side peripheral wall portion 12A and the outer foot side peripheral wall portion 12B from falling down in the left-right direction Y. Therefore, it is possible to suppress the collapse of the wearer's ankle (so-called pronation) that may occur at the time of landing. Therefore, by adopting the above-described configuration, also in this sense, the shoe 1B can be made to greatly improve the fit to the wearer's foot and the stability at the time of landing.

[0220] Here, in the shoe 1B according to the present embodiment, similar to the case of the shoe 1A11 according to the 11th modification example described above, the sole body 30 is not housed inside the upper body 20, but is positioned so as to be sandwiched between the bottom wall portion 11 of the shell 10 and the lower wall portion 21 of the upper body 20. This is because the connecting portion 13C is provided so as to bridge the inner foot side peripheral wall portion 12A and the outer foot side peripheral wall portion 12B of the shell 10, and thus the upper body 20 cannot be arranged to house the connecting portion 13C.

[0221] Therefore, when the connecting portion 13C as in the present embodiment is provided on the peripheral wall portion 12, the upper body 20 is arranged only in the upper side space SP2 of the internal space of the shell 10. Along with this, the upper surface of the sole body 30 defined by the top surface 31a of the midsole 31 and the upper surface 13a of the connecting portion 13C are both covered by the lower wall portion 21 of the upper body 20.

[0222] Here, in the shoe 1B according to the present embodiment, further, if concave portions and convex portions having corresponding shapes are provided on the pressing surface 14 of the connecting portion 13C and the top surface 31a of the midsole 31 at the portion facing the pressing surface 14, respectively, the fitting of these concave portions and convex portions can also prevent the occurrence of displacement in the front-rear direction X and the left-right direction Y of the midsole 31.

[0223] Note that, in the shoe 1B according to the present embodiment, similar to the case of the first embodiment described above, the constricted portion 13A is provided at a predetermined portion of the peripheral wall portion 12 of the shell 10, and the lower surface of the constricted portion 13A also functions as the pressing surface 14. The pressing surface 14 defined by the lower surface of these constricted portions 13A and the pressing surface 14 defined by the lower surface of the connecting portion 13C are configured to be continuous with each other.

[0224] (13th Modification Example) FIG. 33 is an enlarged schematic cross-sectional view of a main part of a shoe according to the 13th modification. Hereinafter, with reference to this FIG. 33, a shoe 1B1 according to the 13th modification based on the above-described Embodiment 2 will be described. Note that the shoe 1B1 according to the 13th modification differs only in the configuration of the shell 10 when compared with the shoe 1B according to the above-described Embodiment 2.

[0225] In the shoe 1B according to the above-described Embodiment 2, the pressing surface 14 was formed by providing the constricted portion 13A and the connecting portion 13C on the peripheral wall portion 12. However, as shown in FIG. 33, in the shoe 1B1 according to the 13th modification, the pressing surface 14 is formed by providing the connecting portion 13C on the peripheral wall portion 12, and the sole body 30 is fixed to the shell 10 only by the pressing surface 14 formed by the lower surface of this connecting portion 13C.

[0226] Even in such a configuration, the same effects as those described in the above-described Embodiment 2 can be obtained, and the sole body 30 can be stably fixed to the shell 10, so that the fit to the wearer's foot and the stability at the time of landing are greatly improved, and the shoe 1B1 with a reduced environmental load compared to the conventional one can be obtained.

[0227] (14th modification) FIG. 34 is a cross-sectional view of a shoe according to the 14th modification. Hereinafter, with reference to this FIG. 34, a shoe 1B2 according to the 14th modification based on the above-described Embodiment 2 will be described. Note that the shoe 1B2 according to the 14th modification differs only in the configuration of the sole body 30 when compared with the shoe 1B according to the above-described Embodiment 2.

[0228] As shown in FIG. 34, in the shoe 1B2 according to the 14th modification, similar to the shoe 1B according to the above-described Embodiment 2, the pressing surface 14 is formed by providing the connecting portion 13C on the peripheral wall portion 12. However, a groove portion 31c having a shape corresponding to the connecting portion 13C is provided on the top surface 31a of the midsole 31 at the portion that contacts this pressing surface 14. This groove portion 31c extends along the left-right direction Y, and both ends thereof reach the end surfaces of the midsole 31.

[0229] When configured in this way, the connecting portion 13C can be fitted into the groove portion 31c provided in the midsole 31. Therefore, the top surface 31a of the midsole 31 and the upper surface 13a of the connecting portion 13C can be smoothly continuous, so that it is possible to suppress the wearer from feeling a sense of discomfort on the sole when wearing.

[0230] Therefore, when configured in this way, as in the case of the above-described Embodiment 2, the sole body 30 can be stably fixed to the shell 10, so that the fit to the wearer's foot and the stability at the time of landing are greatly improved. Moreover, not only can the environmental load be reduced more than before, but also the shoe 1B2 can have a more comfortable wearing feeling.

[0231] (15th and 16th Modification Examples) FIG. 35 is a schematic view showing the formation range of the pressing surfaces provided on the peripheral wall portion of the shell of the shoe according to the 15th and 16th modification examples. Hereinafter, with reference to FIG. 35, the shoes 1B3 and 1B4 according to the 15th and 16th modification examples based on the above-described Embodiment 2 will be described. Note that the shoes 1B3 and 1B4 according to these 15th and 16th modification examples are different in the formation range of the pressing surface 14 only in that the position and number of the connecting portions 13C provided are different when compared with the shoe 1B according to the above-described Embodiment 2.

[0232] As shown in FIG. 35(A), in the shoe 1B3 according to the 15th modification example, two connecting portions 13C are arranged at intervals in the front-rear direction X, so that two pressing surfaces 14 are provided at intervals in the front-rear direction X. One pressing surface 14 is located at a portion closer to the rear end in the front-rear direction X of the front foot portion R1, and the other pressing surface 14 is located at the boundary portion between the middle foot portion R2 and the rear foot portion R3. These two pressing surfaces 14 both extend along the left-right direction Y.

[0233] Here, in the shoe 1B3 according to the 15th modification example, the constricted portion 13A (see FIGS. 5 to 7, etc.) and the protruding portion 13B (see FIG. 29, etc.) are not provided on the peripheral wall portion 12 of the shell 10, and the pressing surface 14 is constituted only by the lower surfaces of each of the above-described two connecting portions 13C.

[0234] As shown in FIG. 35(B), in the shoe 1B4 according to the 16th modification example, since the connecting portion 13C is provided at substantially the center in the front-rear direction X of the midfoot portion R2, the pressing surface 14 is provided at substantially the center in the front-rear direction X of the midfoot portion R2, and since the constricted portion 13A or the protruding portion 13B is provided on the rear peripheral wall portion 12C, a rear pressing surface 14C is further provided.

[0235] By providing the two pressing surfaces 14 at intervals in the front-rear direction X as in these 15th and 16th modification examples, the sole body 30 can be fixed to the shell 10 more stably than when only one pressing surface 14 is provided.

[0236] Therefore, even in the case of such a configuration, the same effects as those described in the above-described Embodiment 2 can be obtained, and since the sole body 30 can be stably fixed to the shell 10, the fitness for the wearer's foot and the stability at the time of landing are greatly improved, and the shoes 1B3 and 1B4 with reduced environmental load compared to the conventional ones can be obtained.

[0237] (17th Modification Example) FIG. 36 is a schematic cross-sectional view of a main part of a shoe according to the 17th modification example. Hereinafter, with reference to this FIG. 36, the shoe 1B5 according to the 17th modification example based on the above-described Embodiment 2 will be described. Note that the shoe 1B5 according to the 17th modification example differs only in the configuration of the shell 10 when compared with the shoe 1B according to the above-described Embodiment 2.

[0238] As shown in Fig. 36, the shoe 1B5 according to the 17th modification example includes a shell 10A2 in which a portion excluding the mesh-like structure portion 10b is formed of a three-dimensional mesh structure, similar to the shell 10A shown in Fig. 15. The shell 10A2 is different from the above-described shell 10A and its configuration in that a pressing surface 14 is formed by the lower surface of the connection portion 13C due to the provision of the connection portion 13C.

[0239] Further, in the shell 10A2, a high-rigidity portion 19 is provided in a portion of the connection portion 13C that defines the pressing surface 14. The high-rigidity portion 19 is the same as the high-rigidity portion 19 provided in the shell 10A1 included in the shoe 1A10 according to the 10th modification example described above, and is a portion configured to have higher rigidity than the connection portion 13C and the peripheral wall portion 12 of a portion adjacent to the portion where the high-rigidity portion 19 is provided. This high-rigidity portion 19 is formed by configuring the occupation ratio of the portion of the connection portion 13C that defines the pressing surface 14 to be higher than the occupation ratio of the portion adjacent to the portion.

[0240] Thus, when the portion of the connection portion 13C that defines the pressing surface 14 is the high-rigidity portion 19, it becomes possible to suppress the deformation of the connection portion 13C of the portion where the pressing surface 14 is provided, so that it is effectively possible to suppress the sole body 30 from coming out from the space below the pressing surface 14. Therefore, by configuring in this way, it is possible to prevent the sole body 30 from falling off from the shell 10, and the sole body 30 can be more stably fixed to the shell 10.

[0241] Therefore, even when configured in this way, it is possible to obtain the same effects as those described in the second embodiment above, and since the sole body 30 can be stably fixed to the shell 10, the fitness for the wearer's foot and the stability at the time of landing are greatly improved, and it is possible to make the shoe 1B5 with a reduced environmental load compared to the conventional one.

[0242] (Summary of the disclosure content in the embodiments and modification examples) Summarizing the characteristic configurations disclosed in the above-described embodiments and modification examples, they are as follows.

[0243] [Appendix 1] A shoe having an insertion space into which the wearer's foot is inserted, the shoe including a flexible shell including a bottom wall portion having a grounding surface and a peripheral wall portion erected from the periphery of the bottom wall portion, and a sole body that is accommodated in the shell and is positioned above the bottom wall portion and configured to support the sole of the wearer's foot. The peripheral wall portion is provided with a pressing surface that extends toward the inside of the shell and faces the bottom wall portion side. The sole body is sandwiched between the pressing surface and the bottom wall portion, whereby the sole body is fixed to the shell. A shoe.

[0244] By adopting the configuration described in Appendix 1 above, it becomes possible to sandwich and fix the sole body between the bottom wall portion of the shell and the pressing surface provided on the peripheral wall portion of the shell. Therefore, it is possible to stably fix the sole body to the shell without using an adhesive or while reducing the amount of adhesive used.

[0245] [Appendix 2] The peripheral wall portion is provided with a protruding portion that protrudes toward the inside of the shell. The shoe according to Appendix 1, wherein the pressing surface is constituted by the lower surface of the protruding portion.

[0246] By adopting the configuration described in Appendix 2 above, it becomes possible to easily provide a pressing surface on the peripheral wall portion of the shell, and the sole body can be fixed to the shell with a simple configuration.

[0247] [Appendix 3] The peripheral wall portion is provided with a constricted portion that constricts toward the inside of the shell. The shoe according to Appendix 1, wherein the pressing surface is constituted by the lower surface of the constricted portion.

[0248] By adopting the configuration described in the above-mentioned supplementary note 3, it becomes possible to easily provide a pressing surface on the peripheral wall portion of the shell, and the sole body can be fixed to the shell with a simple configuration.

[0249] [Supplementary Note 4] The above-mentioned peripheral wall portion has an inner-side peripheral wall portion configured to cover the inner-side portion of the wearer's foot and an outer-side peripheral wall portion configured to cover the outer-side portion of the wearer's foot. The shoe according to supplementary note 2 or 3, wherein the pressing surface includes an inner-side pressing surface provided on the inner-side peripheral wall portion and an outer-side pressing surface provided on the outer-side peripheral wall portion.

[0250] By adopting the configuration described in the above-mentioned supplementary note 4, it becomes possible to fix the sole body to the shell in the inner-side portion and the outer-side portion of the shoe located in the left-right direction with a small outer dimension of the shoe, and the sole body can be fixed to the shell more stably.

[0251] [Supplementary Note 5] The shoe according to supplementary note 4, wherein the inner-side pressing surface and the outer-side pressing surface are provided at positions facing each other in the left-right direction, which is the direction matching the foot width direction of the wearer's foot.

[0252] By adopting the configuration described in the above-mentioned supplementary note 5, the inner-side pressing surface and the outer-side pressing surface are arranged so as to be connected by the shortest distance along the left-right direction of the shoe, so that the sole body can be fixed to the shell more stably.

[0253] [Supplementary Note 6] The above-mentioned peripheral wall portion further has a rear-side peripheral wall portion configured to cover the rear surface of the heel portion of the wearer's foot. The shoe according to supplementary note 4 or 5, wherein the pressing surface further includes a rear-side pressing surface provided on the rear-side peripheral wall portion.

[0254] By adopting the configuration described in the above-mentioned supplementary note 6, it becomes possible to fix the sole body to the shell at the rear end of the shoe where the sole body is more likely to be displaced, so that the sole body can be more stably fixed to the shell.

[0255] [Supplementary Note 7] The shoe according to supplementary note 6, wherein the inner foot side pressing surface, the outer foot side pressing surface, and the rear side pressing surface extend continuously along the circumferential direction of the peripheral wall portion.

[0256] By adopting the configuration described in the above-mentioned supplementary note 7, it becomes possible to fix the sole body to the shell in a relatively long range including the rear end of the shoe where the sole body is more likely to be displaced along the periphery of the sole body, so that the sole body can be more stably fixed to the shell.

[0257] [Supplementary Note 8] The shoe according to supplementary note 2 or 3, wherein the pressing surface is provided over the entire circumference along the circumferential direction of the peripheral wall portion.

[0258] By adopting the configuration described in the above-mentioned supplementary note 8, it becomes possible to fix the sole body to the shell over the entire circumference of the sole body, so that the sole body can be more stably fixed to the shell.

[0259] [Supplementary Note 9] The shoe according to any one of supplementary notes 2 to 8, wherein the shell is composed of a three-dimensional mesh structure in which a plurality of unit structures are repeatedly arranged adjacent to each other.

[0260] By adopting the configuration described in the above-mentioned supplementary note 9, the shell has sufficient strength while having appropriate flexibility, and moreover, the weight of the shoe can be reduced and the breathability can be improved.

[0261] [Supplementary Note 10] The shoe according to supplementary note 9, wherein the occupancy ratio of the portion defining the pressing surface of the peripheral wall portion is higher than the occupancy ratio of the portion adjacent to the portion.

[0262] By adopting the configuration described in the above-mentioned Supplementary Note 10, although the shell is configured as a three-dimensional mesh structure, it is possible to enhance the strength of the pressing surface and its vicinity, so that the sole body can be stably fixed to the shell.

[0263] [Supplementary Note 11] The shoe according to any one of Supplementary Notes 2 to 10, wherein a solid ridge portion extending along the circumferential direction of the peripheral wall portion is provided at a position along the inner edge of the pressing surface.

[0264] By adopting the configuration described in the above-mentioned Supplementary Note 11, since the ridge portion functions as a stopper so to speak, it is possible to effectively prevent the sole body sandwiched between the pressing surface and the bottom wall portion from coming off the shell.

[0265] [Supplementary Note 12] The shoe according to any one of Supplementary Notes 2 to 11, further comprising a bag-shaped upper body that is accommodated in the shell and is located along the inner peripheral surface of the peripheral wall portion, and an opening through which the wearer's foot can be inserted is provided.

[0266] By adopting the configuration described in the above-mentioned Supplementary Note 12, since it is possible to configure the portion covering the circumferential surface of the foot of the shoe wearer with a flexible upper body, it is possible to achieve a good foot feel.

[0267] [Supplementary Note 13] The shoe according to Supplementary Note 12, wherein the sole body is accommodated in the upper body, and is sandwiched between the pressing surface and the bottom wall portion with the upper body intervening therebetween.

[0268] By adopting the configuration described in the above-mentioned Supplementary Note 13, it is possible to fix not only the sole body but also the upper body to the shell.

[0269] [Supplementary Note 14] Further comprising an additional sole body that is housed in the shell and disposed outside the upper body, The shoe according to supplementary note 13, wherein the additional sole body is fixed to the shell by being disposed between a portion covering the sole main body of the upper body and the bottom wall portion.

[0270] By adopting the configuration described in the above supplementary note 14, not only can the buffering performance at the time of landing be more easily optimized, but also the additional sole body can be easily replaced, so that the service life of the shoe can be extended.

[0271] [Supplementary note 15] The upper body is disposed in a space located above the sole main body among the spaces formed inside the shell, The shoe according to supplementary note 12, wherein a portion of the upper surface of the sole main body other than the portion covered by the pressing surface is covered by the upper body.

[0272] By adopting the configuration described in the above supplementary note 15, it becomes possible to configure the portion covering the sole of the foot of the wearer of the shoe with a flexible upper body, so that a good foot feeling can be realized.

[0273] [Supplementary note 16] The peripheral wall portion further includes an inner foot side peripheral wall portion configured to cover a portion of the wearer's foot on the inner foot side, an outer foot side peripheral wall portion configured to cover a portion of the wearer's foot on the outer foot side, and a connecting portion having one end connected to the inner foot side peripheral wall portion and the other end connected to the outer foot side peripheral wall portion, The shoe according to supplementary note 1, wherein the pressing surface is constituted by the lower surface of the connecting portion.

[0274] By adopting the configuration described in the above supplementary note 16, it becomes possible to easily provide a pressing surface on the peripheral wall portion of the shell, and the sole main body can be fixed to the shell with a simple configuration.

[0275] [Supplementary note 17] The shoe according to supplementary note 16, wherein a plurality of the connecting portions are arranged at intervals in the front-rear direction that coincides with the longitudinal direction of the wearer's foot.

[0276] By adopting the configuration described in the above supplementary note 17, the sole body can be fixed to the shell at a plurality of positions in the front-rear direction of the shoe, so that the sole body can be more stably fixed to the shell.

[0277] [Supplementary note 18] The shoe according to supplementary note 16 or 17, wherein the shell is composed of a three-dimensional mesh structure in which a plurality of unit structures are repeatedly arranged adjacent to each other.

[0278] By adopting the configuration described in the above supplementary note 18, the shell has sufficient strength while having appropriate flexibility, and moreover, the weight of the shoe can be reduced and the breathability can be improved.

[0279] [Supplementary note 19] The shoe according to supplementary note 18, wherein the occupation ratio of the portion defining the pressing surface among the connecting portions is higher than the occupation ratio of the portion adjacent to the portion.

[0280] By adopting the configuration described in the above supplementary note 19, the shell is configured by a three-dimensional mesh structure, and it is possible to increase the strength of the pressing surface and its vicinity, so that the sole body can be stably fixed to the shell.

[0281] [Supplementary note 20] The shoe further includes a bag-shaped upper body that is located along the inner peripheral surface of the peripheral wall portion when housed in the shell and is provided with an opening into which the wearer's foot can be inserted. The upper body is arranged in a space above the connecting portion among the spaces formed inside the shell. The shoe according to any one of supplementary notes 16 to 19, wherein the upper surface of the connecting portion is covered by the upper body.

[0282] By adopting the configuration described in the above-mentioned supplementary note 20, it becomes possible to configure the portion covering the circumferential surface and the sole of the foot of the wearer of the shoe with a flexible upper body, so that it is possible to achieve a good foot feel.

[0283] (Other forms, etc.) In the above-described embodiments and modified examples, the formation range, number, shape, size, etc. of the wrinkled portions, protruding portions, connecting portions, etc. shown can be appropriately changed. Therefore, accordingly, the formation range, number, shape, size, etc. of the pressing surfaces can also be variously changed. For example, in the above-described embodiments and modified examples, the description has been given by exemplifying only the case where the connecting portion extends in the left-right direction, but it may be configured to extend in a different direction.

[0284] Also, in the above-described embodiments and their modified examples, the description has been given by exemplifying the case where the upper surface of the sole body is configured to be in direct or indirect contact with the pressing surface, but the pressing surface does not necessarily have to be configured in this way. For example, a protruding portion may be provided on the inner peripheral surface of the peripheral wall portion of the shell, and the pressing surface may be configured by the lower surface of this protruding portion. At the same time, a recess may be provided in the end surface of the midsole constituting the sole body, and the protruding portion may be fitted into this recess. In this case, the pressing surface will be in direct or indirect contact with the bottom surface of the recess, and accordingly, the sole body will be sandwiched and held between the pressing surface and the bottom wall portion.

[0285] Also, in the above-described embodiments and their modified examples, the description has been made on the premise that the shoe is used without wearing the insole in the shoe. Naturally, these shoes may be used with the insole worn. In that case, the above-described pressing surface and sole body will be covered by the insole. When the shoe is provided with an insole in this way, it is possible to make the shoe have a better foot feel.

[0286] Also, the characteristic configurations shown in the above-described embodiments and modified examples can be combined with each other as long as they do not depart from the gist of the present disclosure.

[0287] Thus, the above-described embodiments and their modifications disclosed this time are illustrative in all respects and not restrictive. The technical scope of the present invention is defined by the scope of the claims, and includes all modifications within the meaning and scope equivalent to the description of the scope of the claims.

Description of Reference Numerals

[0288] 1A, 1A1 to 1A12, 1A6a to 1A6d, 1B, 1B1 to 1B5 shoes, 2 shoe openings, 3 ground contact surfaces, 10, 10A, 10A1, 10A2, 10B1 to 10B3, 10C1 to 10C3 shells, 10a mouth parts, 10a1 wire elements, 10b mesh-like structure parts, 10c holes, 11 bottom wall parts, 11a inner surfaces, 11b outer surfaces, 12 peripheral wall parts, 12A inner foot side peripheral wall parts, 12B outer foot side peripheral wall parts, 12C rear side peripheral wall parts, 12D front side peripheral wall parts, 12a inner peripheral surfaces, 12b outer peripheral surfaces, 13A constricted parts, 13B protruding parts, 13C connecting parts, 13a upper surfaces, 14 pressing surfaces, 14A inner foot side pressing surfaces, 14B outer foot side pressing surfaces, 14C rear side pressing surfaces, 14D front side pressing surfaces, 15 ribbed parts, 16 insertion parts, 17, 18 cut-out parts, 19 high-rigidity parts, 20 upper body parts, 20a openings, 21 lower wall parts, 21a inner surfaces, 21b outer surfaces, 22 side wall parts, 22A inner foot side wall parts, 22B outer foot side wall parts, 22C rear side wall parts, 22D front side wall parts, 22a inner peripheral surfaces, 22b outer peripheral surfaces, 23 belt-like parts, 24 tightening parts, 24a base ends, 24b tips, 30 sole main bodies, 31 mid-soles, 31a top surfaces, 31b bottom surfaces, 31c groove parts, 32 plates, 32a first main surfaces, 32b second main surfaces, 32c peripheral end surfaces, 40 additional sole bodies, 50 heel counters, 51 surrounding parts, 51A first parts, 51B second parts, 51C third parts, 52 protruding parts, 56 insertion parts, P1 first boundary surfaces, P2 second boundary surfaces, PF front side end positions, PR rear side end positions, R1 forefoot parts, R2 midfoot parts, R3 rearfoot parts, SC shoe centers, SP1 lower side spaces, SP2 upper side spaces, SP3 insertion spaces.

Claims

1. A shoe having an insertion space inside into which the wearer's foot is inserted, a flexible shell including a bottom wall portion having a ground contact surface and a peripheral wall portion erected from the periphery of the bottom wall portion, and a sole body configured to be accommodated in the shell and positioned above the bottom wall portion and support the sole of the wearer's foot. The peripheral wall portion is provided with a pressing surface that is positioned to extend toward the inside of the shell and faces the bottom wall portion side. The shoe in which the sole body is sandwiched between the pressing surface and the bottom wall portion, and the sole body is fixed to the shell.

2. The peripheral wall portion is provided with a protruding portion that protrudes toward the inside of the shell. The shoe according to claim 1, wherein the pressing surface is constituted by the lower surface of the protruding portion.

3. The peripheral wall portion is provided with a constricted portion that constricts toward the inside of the shell. The shoe according to claim 1, wherein the pressing surface is constituted by the lower surface of the constricted portion.

4. The peripheral wall portion has an inner foot side peripheral wall portion configured to cover a portion of the wearer's foot on the inner foot side and an outer foot side peripheral wall portion configured to cover a portion of the wearer's foot on the outer foot side. The shoe according to claim 2 or 3, wherein the pressing surface includes an inner foot side pressing surface provided on the inner foot side peripheral wall portion and an outer foot side pressing surface provided on the outer foot side peripheral wall portion.

5. The shoe according to claim 4, wherein the inner foot side pressing surface and the outer foot side pressing surface are provided at positions facing each other in the left-right direction, which is a direction corresponding to the foot width direction of the wearer's foot.

6. The peripheral wall portion further has a rear side peripheral wall portion configured to cover the rear surface of the heel portion of the wearer's foot. The shoe according to claim 4, wherein the pressing surface further includes a rear side pressing surface provided on the rear side peripheral wall portion.

7. The shoe according to claim 6, wherein the inner foot side pressing surface, the outer foot side pressing surface, and the rear side pressing surface extend continuously with each other along the circumferential direction of the peripheral wall portion.

8. The shoe according to claim 2 or 3, wherein the pressing surface is provided over the entire circumference along the circumferential direction of the peripheral wall portion.

9. The shoe according to claim 2 or 3, wherein the shell is composed of a three-dimensional mesh structure in which a plurality of unit structures are repeatedly arranged adjacent to each other.

10. The shoe according to claim 9, wherein the occupancy ratio of the portion of the peripheral wall portion that defines the pressing surface is higher than the occupancy ratio of the portion adjacent to the portion.

11. The shoe according to claim 2 or 3, wherein a solid ridge portion extending along the circumferential direction of the peripheral wall portion is provided at a position along the inner edge portion of the pressing surface.

12. The shoe according to claim 2 or 3, further comprising a bag-shaped upper body that is housed in the shell and is positioned along the inner peripheral surface of the peripheral wall portion, and has an opening through which the wearer's foot can be inserted.

13. The shoe according to claim 12, wherein the sole body is housed in the upper body, and is sandwiched between the pressing surface and the bottom wall portion with the upper body intervening therebetween.

14. The shoe further comprises an additional sole body that is housed in the shell and is disposed outside the upper body, The shoe according to claim 13, wherein the additional sole body is disposed between a portion covering the sole body of the upper body and the bottom wall portion, and is fixed to the shell.

15. The upper body is disposed in a space above the sole body among the spaces formed inside the shell, The shoe according to claim 12, wherein a portion of the upper surface of the sole body other than the portion covered by the pressing surface is covered by the upper body.

16. The peripheral wall portion further includes an inner-foot-side peripheral wall portion configured to cover a portion of the wearer's foot on the inner-foot side, an outer-foot-side peripheral wall portion configured to cover a portion of the wearer's foot on the outer-foot side, and a connecting portion having one end connected to the inner-foot-side peripheral wall portion and the other end connected to the outer-foot-side peripheral wall portion, The shoe according to claim 1, wherein the pressing surface is constituted by the lower surface of the connecting portion.

17. The shoe according to claim 16, wherein a plurality of the connecting portions are arranged at intervals in the front-rear direction, which is the direction matching the foot length direction of the wearer's foot.

18. The shoe according to claim 16, wherein the shell is formed of a three-dimensional mesh structure in which a plurality of unit structures are repeatedly arranged adjacent to each other.

19. The shoe according to claim 18, wherein the occupation ratio of the portion defining the pressing surface among the connecting portions is higher than the occupation ratio of the portion adjacent to the portion.

20. The shoe according to claim 2 or 3, further comprising a bag-shaped upper body that is housed in the shell and is positioned along the inner peripheral surface of the peripheral wall portion, and has an opening through which the wearer's foot can be inserted. The upper body is disposed in a space above the connecting portion among the spaces formed inside the shell, The shoe according to claim 16, wherein an upper surface of the connecting portion is covered by the upper body.

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