Shoes

Abstract

The present application provides a shoe which can improve the degree of freedom of material selection of a sole body, while suppressing an increase in the number of parts, and can easily be manufactured. The shoe includes a flexible case formed with an internal space, and a sole body housed in the case. The case includes a bottom wall portion and a peripheral wall portion, a lower side space in the internal space in which the sole body is disposed is formed by the bottom wall portion and the peripheral wall portion of the portion adjacent to the bottom wall portion, and an upper side space in the internal space in which a wearer's foot is inserted is formed by the peripheral wall portion of the portion located further upward than the portion adjacent to the bottom wall portion. A ground surface of the shoe is constituted by an outer surface of the bottom wall portion by covering a lower surface of the sole body with the bottom wall portion.

Description

Technical Field

[0001] This invention relates to a shoe, and more particularly to a shoe comprising a sole body and a shell housing the sole body. Background Technology

[0002] In the specification of U.S. Patent No. 10241498 Figure 6 E and Figure 6 F discloses a shoe that includes a sole body, an upper body, and a shell that houses the sole body and the upper body.

[0003] In the shoe disclosed in the aforementioned document, a plurality of holes are provided in the bottom wall portion of the shell, and a plurality of protrusions are provided on the lower surface of the sole body, the plurality of protrusions being inserted into the holes. Thus, the plurality of protrusions provided on the sole body protrude outward and are located on the outer surface of the bottom wall portion of the shell, the front end faces of the plurality of protrusions forming the contact surface. Summary of the Invention

[0004] In the shoes disclosed in the aforementioned documents, since the contact surface is formed by multiple protrusions provided on the sole body, it is necessary to select a material with excellent wear resistance as the material for the sole body. However, when considering other functions of the sole body, such as improving wearing comfort or ensuring cushioning, the range of material choices for the sole body becomes narrow.

[0005] To avoid the aforementioned situation, it is also considered to use a different material from the other parts of the sole to form multiple protrusions. However, with the configuration as described above, the increase in the number of parts will lead to a problem of increased manufacturing costs.

[0006] Furthermore, in the shoes disclosed in the aforementioned documents, the manufacturing process requires positioning multiple protrusions on the sole body and multiple holes on the bottom wall of the shell, while simultaneously inserting the multiple protrusions into the multiple holes. Therefore, this complicates the manufacturing process and consequently puts pressure on manufacturing costs.

[0007] Therefore, the present invention is made to solve the aforementioned problems, and aims to provide a shoe that increases the freedom of material selection for the sole body, while suppressing the increase in the number of parts, and is easier to manufacture than before.

[0008] The shoe of the present invention includes a shell and a sole body. The shell includes a flexible member forming an internal space for the wearer's foot to insert into. The sole body is housed within the shell and supports the ball of the wearer's foot. The shell includes a bottom wall portion and a peripheral wall portion erected from the periphery of the bottom wall portion. In the shoe of the present invention, a lower side space, i.e., a space for the sole body to be positioned, is formed by the bottom wall portion and the peripheral wall portion adjacent to the bottom wall portion. At least a portion of the upper side space, i.e., a space for the wearer's foot to insert into, is formed by the peripheral wall portion located above the portion adjacent to the bottom wall portion. In the shoe of the present invention, the outer surface of the bottom wall portion forms the contact surface by covering the lower surface of the sole body.

[0009] The foregoing and other objects, features, aspects and advantages of the present invention will be apparent from the following detailed description relating to the invention, which is understood in conjunction with the accompanying drawings. Attached Figure Description

[0010] Figure 1 This is a three-dimensional view of the shoe according to embodiment 1.

[0011] Figure 2 Observing from another direction Figure 1 The image shown is a 3D representation of the shoe.

[0012] Figure 3 yes Figure 1 The image shows a cross-sectional view of the shoe.

[0013] Figure 4 It is used for explanation Figure 1 An exploded perspective view of the shoe's assembly structure.

[0014] Figure 5 yes Figure 1 The diagram shows a schematic plan view of the casing.

[0015] Figure 6 yes Figure 5 The diagram shows a partial cross-sectional view of the casing.

[0016] Figure 7 This is a three-dimensional view of the shell included in the shoe of the first modified example.

[0017] Figure 8 This is a three-dimensional view of the shell included in the shoe of the second variation.

[0018] Figure 9 This is a three-dimensional view of the shell included in the shoe of the third variation.

[0019] Figure 10 This is a perspective view of the shell included in the shoe of embodiment 2.

[0020] Figure 11 yes Figure 10 The diagram shows a schematic plan view of the casing.

[0021] Figure 12A yes Figure 10 The diagram shows a partial cross-sectional view of the casing.

[0022] Figure 12B It is used for explanation Figure 10 A partial cross-sectional view of another structural example of the shell shown.

[0023] Figure 13 This is a perspective view of the shell included in the shoe of embodiment 3.

[0024] Figure 14 yes Figure 13 The schematic bottom view of the casing is shown.

[0025] Figure 15A yes Figure 13 The diagram shows a partial cross-sectional view of the casing.

[0026] Figure 15B It is used for explanation Figure 13 A partial cross-sectional view of another structural example of the shell shown.

[0027] Figure 16 This is a perspective view of the shell included in the shoe according to embodiment 4.

[0028] Figure 17 yes Figure 16 The diagram shows a partial cross-sectional view of the casing.

[0029] Figure 18 This is a partial cross-sectional view of the shell included in the shoe of embodiment 5.

[0030] Figure 19 It is Figure 18 A schematic bottom view of a portion of the shell shown in a cut-off state.

[0031] Figure 20 This is a partial cross-sectional view of the shell included in the shoe of embodiment 6.

[0032] Figure 21 This is a partial cross-sectional view of the shell included in the shoe of embodiment 7.

[0033] Figure 22 This is a perspective view of the shell included in the shoe according to embodiment 8.

[0034] Figure 23A and Figure 23B yes Figure 22 The diagram shows a partial cross-sectional view of the casing.

[0035] Figure 24A and Figure 24B It is used for explanation Figure 22 A partial cross-sectional view of another structural example of the shell shown.

[0036] Figure 25 This is a three-dimensional view of the shell included in the shoe of the fourth variation.

[0037] Figure 26 This is a three-dimensional view of the shell included in the shoe of the fifth variation.

[0038] Figure 27 This is a perspective view of the shell included in the shoe according to embodiment 9.

[0039] Figure 28 This is a partial cross-sectional perspective view of the shell included in the shoe of embodiment 10.

[0040] Figure 29 This is an exploded perspective view of the shell included in the shoe of embodiment 11.

[0041] Figure 30 This is an exploded perspective view of the shell included in the shoe of the sixth variation.

[0042] Figure 31 This is a perspective view of the shell included in the shoe of embodiment 12.

[0043] Figure 32 Observing from another direction Figure 31 The diagram shows a three-dimensional view of the shell.

[0044] Figure 33 This is a perspective view of the shell included in the shoe of embodiment 13.

[0045] Figure 34 This is a partial perspective view of the shell included in the shoe of embodiment 14.

[0046] Figure 35 This is a partial plan view of the shell included in the shoe of embodiment 15.

[0047] Figure 36 This is a perspective view of the shoe according to embodiment 16.

[0048] Figure 37 This is a perspective view of the shoe according to embodiment 17.

[0049] Figure 38 This is a perspective view of the shoe according to embodiment 18.

[0050] Figure 39 Observing from another direction Figure 38 The image shown is a 3D representation of the shoe.

[0051] Figure 40 yes Figure 38 The image shows a cross-sectional view of the shoe.

[0052] Figure 41 It is used for explanation Figure 38 An exploded perspective view of the shoe's assembly structure.

[0053] Figure 42 This is a perspective view of the shoe according to embodiment 19.

[0054] Figure 43 This is a perspective view of the shoe according to embodiment 20. Detailed Implementation

[0055] Hereinafter, embodiments of the present invention will be described in detail with reference to the figures. Furthermore, in the embodiments shown below, the same or common parts are labeled with the same symbols in the figures, and their descriptions will not be repeated.

[0056] (Implementation Method 1)

[0057] Figure 1 This is a three-dimensional view of the shoe according to embodiment 1. Figure 2 Observing from another direction Figure 1 The image shown is a 3D representation of the shoe. Additionally, Figure 3 It is along Figure 1 The cross-sectional view of line III-III is shown. First, refer to the... Figures 1 to 3 The structure of shoe 1A in this embodiment will be explained.

[0058] like Figures 1 to 3 As shown, the shoe 1A of this embodiment is a sock-like shoe that covers the wearer's foot substantially as a whole (i.e., the part further to the end than the ankle), and includes a shell 10A and a sole body 20 (see reference). Figure 3 ), and the upper body 30. A part for inserting the foot, namely the shoe opening 33, is provided at the upper part of the shoe 1A. An internal space SP is formed inside the shoe 1A to serve as a space for the wearer's foot to insert when wearing the shoe (see reference). Figure 3 ).

[0059] Before explaining the specific structure of shoe 1A here, please refer to the following description. Figure 5 To explain the names of the parts of shoe 1A. In addition, Figure 5 In the plan view shown, only the shell 10A is illustrated for ease of drawing, but the same name is used even when viewed as a whole as the shoe 1A.

[0060] like Figure 5 As shown, shoe 1A is positioned along the same direction as the width of the wearer's foot when viewed from above, i.e., the left-right direction. Figure 5The foot is roughly divided into two sides (roughly left and right) on the anatomically correct midline (i.e., the side closest to the center), which is the inner side of the foot. Figure 5 The portion shown is on the S1 side) and the anatomically aligned portion of the foot opposite to the midline (i.e., the side furthest from the midline), namely the lateral side of the foot. Figure 5 (The portion on the S2 side shown).

[0061] Additionally, shoe 1A is positioned along the same direction as the length of the wearer's foot when viewed from above, i.e., the front-to-back direction. Figure 5 The foot is divided into three parts (roughly vertically) into a forefoot (R1) corresponding to the toes and footrest of the wearer's foot, a midfoot (R2) corresponding to the arch of the wearer's foot, and a rearfoot (R3) corresponding to the heel of the wearer's foot.

[0062] Here, taking the front end of shoe 1A as a reference, and defining the first boundary position as a position equivalent to 40% of the front-to-back dimension of shoe 1A from the front end, and the second boundary position as a position equivalent to 80% of the front-to-back dimension of shoe 1A from the front end, the forefoot R1 is the portion included between the front end and the first boundary position along the front-to-back direction, the midfoot R2 is the portion included between the first and second boundary positions along the front-to-back direction, and the rearfoot R3 is the portion included between the second boundary position and the rear end of shoe 1A along the front-to-back direction.

[0063] like Figures 1 to 3 As shown, in the shoe 1A of this embodiment, the sole body 20 is housed in the upper body 30, and the upper body 30, which houses the sole body 20, is housed in the shell 10A. The shell 10A, the sole body 20, and the upper body 30 all extend across the forefoot portion R1, the midfoot portion R2, and the rearfoot portion R3.

[0064] More specifically, the shell 10A constitutes the outermost shell of the shoe 1A and includes a single flexible member formed in a bag shape. The shell 10A includes a bottom wall portion 11 and a peripheral wall portion 12 erected in a manner that extends continuously upward from the periphery of the bottom wall portion 11. The bottom wall portion 11 defines the outermost surface located on the lower side in the vertical direction of the shoe 1A, and the peripheral wall portion 12 defines the outermost surfaces located in the front-back direction and the left-right direction of the shoe 1A.

[0065] The bottom wall portion 11 has a pair of main surfaces, namely an inner surface 11a and an outer surface 11b, and the peripheral wall portion 12 has a pair of main surfaces, namely an inner surface 12a and an outer surface 12b. The bottom wall portion 11 and the peripheral wall portion 12 of the housing 10A are composed of mesh-like members 16a, which serve as the basic structural portion 16. Accordingly, numerous holes 14 are formed on the housing 10A in these portions, reaching the inner surface 11a, the inner surface 12a, and the outer surfaces 11b and 12b. Furthermore, details regarding the basic structural portion 16 will be described below.

[0066] Additionally, an open-shaped insertion portion 13 is provided at the upper end of the peripheral wall portion 12. The insertion portion 13 spans the middle foot portion R2 and the rear foot portion R3.

[0067] like Figure 3 As shown, an internal space SP is formed on the housing 10A. The internal space SP is defined by the inner surface 11a of the bottom wall portion 11 and the inner surface 12a of the peripheral wall portion 12, and communicates with the insertion portion 13. The internal space SP spans the forefoot portion R1, the midfoot portion R2, and the rearfoot portion R3. The internal space SP includes a space for accommodating the sole body 20 and the upper body 30, and a space for the wearer's foot to be inserted, namely the insertion space SP3.

[0068] like Figures 1 to 3 As shown, the upper body 30 retains the wearer's foot by forming part of the portion of the shoe 1A that contacts the wearer's foot, and includes a bag-shaped member that can be flexibly deformed. The upper body 30 is housed in the internal space SP of the housing 10A. The upper body 30 includes a bottom 31 and a wall portion 32 that is erected in a manner that extends continuously upward from the periphery of the bottom 31.

[0069] The bottom 31 has a pair of main surfaces, namely an inner surface 31a and an outer surface 31b, and the wall portion 32 has a pair of main surfaces, namely an inner surface 32a and an outer surface 32b. The outer surface 31b of the bottom 31 of the upper body 30 faces the inner surface 11a of the bottom wall portion 11 of the shell 10A, and the outer surface 32b of the wall portion 32 of the upper body 30 faces the inner surface 12a of the peripheral wall portion 12 of the shell 10A. Thus, the bottom 31 covers the inner surface 11a of the bottom wall portion 11 of the shell 10A, and the wall portion 32 covers the inner surface 12a of the peripheral wall portion 12 of the shell 10A.

[0070] Additionally, the shoe opening 33 is provided at the upper end of the wall portion 32. The shoe opening 33 spans the midfoot portion R2 and the rearfoot portion R3.

[0071] The sole body 20 supports the forefoot of the wearer's foot by forming part of the portion of the shoe 1A that contacts the wearer's foot, and includes a flat component capable of elastic deformation (see reference). Figure 4The sole body 20 is housed in the internal space SP of the housing 10A, and further housed inside the upper body 30.

[0072] The sole body 20 has a pair of main surfaces, namely an upper surface 21 and a lower surface 22, and a side surface 23 connecting them. The lower surface 22 of the sole body 20 faces the inner surface 31a of the bottom 31 of the upper body 30, and the side surface 23 of the sole body 20 faces the lower end portion of the inner surface 32a of the wall portion 32 of the upper body 30. Thus, the sole body 20 covers the inner surface 31a of the bottom 31 of the upper body 30 and the lower end portion of the inner surface 32a of the wall portion 32 of the upper body 30.

[0073] like Figure 3 As shown, the internal space SP of the housing 10A is divided into a lower side space SP1 and an upper side space SP2. The lower side space SP1 is located on the lower part of the shoe 1A in the vertical direction, and the upper side space SP2 is located on the upper part of the shoe 1A in the vertical direction.

[0074] The lower side space SP1 is a space defined by the bottom wall portion 11 and the peripheral wall portion 12 adjacent to the bottom wall portion 11 (hereinafter, the portion of the peripheral wall portion 12 is referred to as the "first portion"). The entire sole body 20 and the lower part of the upper body 30 (i.e., the bottom 31 and the wall portion 32 adjacent to the bottom 31) are arranged in the lower side space SP1.

[0075] The upper side space SP2 is a space defined by the peripheral wall portion 12 (hereinafter referred to as the "second part") located above the first part, in which the upper part of the shoe upper body 30 is disposed (i.e., the wall portion 32 located above the wall portion 32 adjacent to the bottom 31).

[0076] As described above, the upper body 30 is housed in the internal space SP in such a way that it covers the inner surfaces 11a and 12a of the housing 10A. Furthermore, the sole body 20 is housed in the internal space SP in such a way that it covers the lower end portion of the inner surface 31a of the bottom 31 of the upper body 30 and the inner surface 32a of the wall portion 32 of the upper body 30. Therefore, an insertion space SP3 defined by the sole body 20 and the upper body 30 is formed in the internal space SP of the housing 10A.

[0077] As described above, the insertion space SP3 is a space for the wearer's foot to insert during wear. More specifically, the insertion space SP3 is defined by the upper surface 21 of the sole body 20 and the inner surface 32a of the wall portion 32 of the upper body 30 that is not covered by the sole body 20 (i.e., the inner surface 32a of the wall portion 32 at the position corresponding to the second portion of the peripheral wall portion 12 of the housing 10A). Furthermore, the insertion space SP3 is included in the upper side space SP2 within the internal space SP.

[0078] Here, in the shoe 1A of this embodiment, the upper body 30 has a shape that completely covers the part that is further to the end than the ankle of the wearer's foot, and the shell 10A that forms the upper side space SP2 completely covers the part of the wearer's foot except for the part corresponding to the shoe opening 33 into which the wearer's foot is inserted.

[0079] Therefore, when the wearer is wearing shoe 1A, the portion of the wearer's foot excluding the ball of the foot (i.e., the instep and heel area, etc.) contacts the inner surface 32a of the wall portion 32 of the upper body 30, which is capable of flexible deformation, and the ball of the wearer's foot contacts the upper surface 21 of the sole body 20, which is capable of elastic deformation. Thus, comfortable wearing is ensured without the shell 10A directly contacting the wearer's foot.

[0080] However, the upper body 30 and the sole body 20 do not necessarily need to be in full contact with the wearer's foot. Within the range that does not impair wearing comfort, cut-out portions in the shape of cuts or openings can also be provided on the upper body 30 and the sole body 20.

[0081] In the shoe 1A of this embodiment, as described above, the outermost shell of the shoe 1A is formed by the shell 10A. In particular, the lower surface 22 of the sole body 20 is covered by the bottom wall portion 11 of the shell 10A, and the outermost surface located on the lower side in the vertical direction of the shoe 1A is defined by the bottom wall portion 11 of the shell 10A. Thus, in the shoe 1A, its contact surface is formed by the outer surface 11b of the bottom wall portion 11 of the shell 10A.

[0082] Therefore, due to the configuration described above, unlike previous shoes, the contact surface is not formed by the sole body 20. This allows for a wider range of material choices for the sole body 20, enabling optimal material selection for the sole body 20 based on typical requirements for sole functionality, such as improved wearing comfort or ensured cushioning. Furthermore, performance requirements for contact surface, such as abrasion resistance or grip, can be ensured through the selection of the material for the shell 10A or other shapes. Therefore, the number of parts does not increase compared to previous designs.

[0083] Therefore, by manufacturing the shoe 1A of this embodiment, a shoe can be made that increases the freedom of material selection for the sole body while suppressing the increase in the number of parts.

[0084] Furthermore, in the shoe 1A of this embodiment, as described above, the outermost shell of the shoe 1A is constituted by a shell 10A, which includes a bottom wall portion 11 defining the contact surface and a peripheral wall portion 12 erected from the periphery of the bottom wall portion 11 and including a portion covering the instep of the wearer's foot. With this configuration, compared to previous shoes where the outermost shell was composed of a sole and an upper (i.e., shoes excluding components such as the shell 10A of the shoe 1A of this embodiment), it also has the advantage of higher performance.

[0085] That is, in the previous shoes, the upper, which typically included the part covering the instep of the wearer's foot, was made only of woven or knitted fabric, non-woven fabric, etc. In addition, since the upper was bonded to the sole by adhesive or the like, the transmission time from the load applied to the upper covering the instep when kicking to the sole via the sidewalls of the upper was easily delayed. In particular, the shoe's ability to follow the foot was worse when walking.

[0086] However, in the shoe 1A of this embodiment, since the peripheral wall portion 12 of the shell 10A, which includes the portion covering the instep of the wearer's foot, is made of a resin or rubber component as described later, and is made of a material that is harder than woven or knitted fabrics, non-woven fabrics, etc., and since the peripheral wall portion 12, which includes the portion covering the instep, and the sole wall portion 11, which includes the portion containing the designated contact surface, are integrally formed by the shell 10A, which includes a single component, the load transfer during kicking becomes faster, and in particular, the shoe's tracking ability for the foot becomes excellent during walking. Furthermore, in Figure 3 The direction of load transfer based on the housing 10A is schematically indicated by black arrows. Figure 3 The direction of the load applied to the bottom wall portion 11 of the housing 10A is schematically indicated by a hollow arrow.

[0087] Therefore, by manufacturing the shoe 1A of this embodiment, a shoe can be made that not only increases the freedom of material selection for the sole body, but also suppresses the increase in the number of parts, and provides excellent foot tracking.

[0088] Figure 4 This is an exploded perspective view illustrating the assembly structure of the shoe in this embodiment. Next, refer to... Figure 4 The assembly structure and assembly method of shoe 1A in this embodiment will be explained.

[0089] like Figure 4As shown, the shoe 1A of this embodiment is manufactured by assembling the pre-made shell 10A, sole body 20, and upper body 30 together. The shell 10A, sole body 20, and upper body 30 can be manufactured by any method.

[0090] Specifically, firstly, the upper body 30 is inserted into the internal space SP of the housing 10A. Here, the upper body 30 is flexibly deformable, allowing it to be inserted into the internal space SP of the housing 10A via an opening-shaped insertion portion 13 located at the upper end of the housing 10A. The inserted upper body 30 is positioned along the inner surface 11a and inner surface 12a of the housing 10A. Furthermore, near the shoe opening 33, the upper body 30 is positioned so that it protrudes from the insertion portion 13 of the housing 10A to the outside.

[0091] Next, the upper body 30 is fixed relative to the housing 10A. This fixing can be achieved, for example, by sewing or gluing, welding, clamping, or by interlocking with a locking mechanism provided on the upper body 30 and the housing 10A. However, if the upper body 30 is not easily movable inside the housing 10A, this fixing may not be necessary.

[0092] Next, the sole body 20 is inserted into the internal space SP of the housing 10A (more precisely, into the interior of the upper body 30 disposed within the internal space SP of the housing 10A). Here, the sole body 20 is elastically deformable, so it can be inserted into the internal space SP of the housing 10A via an insertion portion 13 in the shape of an opening provided at the upper end of the housing 10A (more precisely, into the shoe opening 33 of the upper body 30). The inserted sole body 20 is configured to run along the inner surface 31a of the bottom 31 of the upper body 30.

[0093] Next, the sole body 20 is fixed relative to the upper body 30. This fixing can be achieved, for example, by sewing, gluing, welding, clamping, or by interlocking with engaging portions provided on the sole body 20 and the upper body 30. However, if the sole body 20 is not easily movable within the upper body 30, this fixing may be omitted.

[0094] By completing the above procedures, the shell 10A, the sole body 20, and the upper body 30 are assembled together, thereby completing the manufacture of the shoe 1A according to this embodiment. Furthermore, the assembly method described is merely illustrative, and other assembly methods may also be used.

[0095] As described above, the shoe 1A of this embodiment can be manufactured in a very simple way by assembling the pre-made shell 10A, sole body 20, and upper body 30 together, thus simplifying its manufacturing compared to the past. Furthermore, no complicated positioning operations are required when assembling the shell 10A, sole body 20, and upper body 30 together.

[0096] Therefore, by manufacturing the shoe 1A of this embodiment, a shoe can be made that not only increases the freedom of material selection for the sole body, but also suppresses the increase in the number of parts, and is easier to manufacture than before.

[0097] Here, the housing 10A can be made of virtually any material as long as it is flexible, preferably with moderate strength. From this perspective, the housing 10A is preferably made of resin or rubber. More specifically, when the housing 10A is made of resin, it can be made of, for example, polyolefin resin, ethylene-vinyl acetate (EVA), polyamide thermoplastic elastomer (thermoplastic polyamide (TPA), thermoplastic polyamide elastomer (TPAE)), thermoplastic polyurethane (TPU), or polyester thermoplastic elastomer (TPEE). On the other hand, when the housing 10A is made of rubber, it can be made of, for example, butadiene rubber.

[0098] The shell 10A may also be composed of a polymer composition. In this case, the polymer contained in the polymer composition may include, for example, olefin polymers such as olefin elastomers or olefin resins. Examples of olefin polymers include polyethylene (e.g., linear low-density polyethylene (LLDPE), high-density polyethylene (HDPE), etc.), polypropylene, ethylene-propylene copolymer, propylene-1-hexene copolymer, propylene-4-methyl-1-pentene copolymer, propylene-1-butene copolymer, ethylene-1-hexene copolymer, ethylene-4-methyl-pentene copolymer, ethylene-1-butene copolymer, 1-butene-1-hexene copolymer, 1-butene-4-methyl-pentene, ethylene-methacrylate copolymer, ethylene-methyl methacrylate copolymer, and ethylene-ethyl methacrylate 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), polyolefins of propylene-vinyl acetate copolymer, etc.

[0099] Alternatively, the polymer may also be an amide-based polymer, such as an amide elastomer or an amide-based resin. Examples of amide-based polymers include polyamide 6, polyamide 11, polyamide 12, polyamide 66, and polyamide 610.

[0100] Alternatively, the polymer may also be an ester-based polymer, such as an ester-based elastomer or an ester-based resin. Examples of ester-based polymers include polyethylene terephthalate and polybutylene terephthalate.

[0101] Alternatively, the polymer may be a urethane elastomer or a urethane resin, or other urethane polymer. Examples of urethane polymers include polyester-based polyurethanes and polyether-based polyurethanes, with urethane acrylates being particularly suitable.

[0102] Alternatively, the polymer may also be a styrene-based elastomer or a styrene-based resin, or other styrene-based polymer. Examples of styrene-based elastomers include styrene-ethylene-butylene copolymer (SEB), styrene-butadiene-styrene copolymer (SBS), hydrides of SBS (styrene-ethylene-butylene-styrene copolymer (SEBS)), styrene-isoprene-styrene copolymer (SIS), and hydrides of SIS (styrene-ethylene-butadiene-styrene copolymer (SEBS)). Examples of styrene-based resins include propylene-ethylene-propylene-styrene copolymers (SEPS), styrene-isobutylene-styrene copolymers (SIBS), styrene-butadiene-styrene-butadiene copolymers (SBSB), and styrene-butadiene-styrene-butadiene-styrene copolymers (SBSBS). Other styrene-based resins include polystyrene, acrylonitrile-styrene resin (AS), and acrylonitrile-butadiene-styrene resin (ABS).

[0103] In addition, the polymer may also be, for example, acrylic polymers such as polymethyl methacrylate, urethane acrylic polymers, polyester acrylic polymers, polyether acrylic polymers, polycarbonate acrylic polymers, epoxy acrylic polymers, conjugated diene polymers and their hydrides, urethane methacrylic polymers, polyester methacrylic polymers, polyether methacrylic polymers, polycarbonate methacrylic polymers, epoxy methacrylic polymers, conjugated diene polymers and their hydrides, polyvinyl chloride resins, silicone elastomers, butadiene rubber (BR), isoprene rubber (IR), chloroprene rubber (CR), natural rubber (NR), styrene butadiene rubber (SBR), acrylonitrile butadiene rubber (NBR), and isobutylene isoprene rubber (IIR), etc.

[0104] On the other hand, the sole body 20 can be made of virtually any material as long as it can deform elastically, but it is preferably made of a component with moderate strength and excellent cushioning. From this perspective, the sole body 20 can, for example, be a resin-based foam material containing a resin material as a main component and a foaming agent or crosslinking agent as a secondary component. Alternatively, a rubber-based foam material containing a rubber material as a main component and plasticizers, foaming agents, reinforcing agents, or crosslinking agents as secondary components can also be used.

[0105] Particularly suitable is that the sole body 20 can be made of foamed materials such as polyolefin resin, ethylene-vinyl acetate copolymer (EVA), polyamide thermoplastic elastomer (TPA, TPAE), thermoplastic polyurethane (TPU), and polyester thermoplastic elastomer (TPEE). Alternatively, the sole body 20 does not necessarily need to be made of foamed materials; it can also be made of non-foamed materials.

[0106] On the other hand, the upper body 30 can be made of virtually any material as long as it can be flexibly deformed, preferably woven or knitted fabrics, non-woven fabrics, synthetic leather, resin, etc. In particular, as described later, if woven or knitted fabrics, non-woven fabrics, etc., made of heat-shrinkable synthetic fibers are used, an upper body 30 that conforms more closely to the wearer's foot can be made. Furthermore, examples of heat-shrinkable synthetic fibers include synthetic fibers with polyester, polyurethane, etc. as the main components.

[0107] That is, when the upper body 30 is made of woven or knitted fabrics or non-woven fabrics of synthetic fibers with heat shrinkability, it is pre-formed into a bag shape, and a shoe last is inserted inside. During heat treatment, heat shrinkage occurs, causing the upper body 30 to change shape while tightly fitted to the shoe last, and this changed shape is maintained. Therefore, if a shoe last corresponding to the shape of the wearer's foot is prepared and used to form the upper body 30, an upper body 30 that fits the wearer's foot can be produced. Furthermore, if the shoe last is used for heat treatment while the upper body is integrated into the housing 10A, the upper body 30 also fits the housing 10A, further improving the fit.

[0108] Furthermore, as the shoe last, a standard shape corresponding to the size of the wearer's foot can be used. If a shoe last made based on 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 is further improved.

[0109] Here, there are no particular limitations on the method of manufacturing the shell 10A. The shell 10A can be manufactured by, for example, injection molding or casting, or by shaping using a three-dimensional lamination molding apparatus. In particular, if the shell 10A is manufactured by shaping using a three-dimensional lamination molding apparatus, it is possible to manufacture shells 10A with various structures that are difficult to manufacture by injection molding or casting.

[0110] Figure 5 This is a schematic plan view of the shell included in the shoe according to this embodiment. Figure 6 yes Figure 5 The diagram shows a partial cross-sectional view of the casing. Next, refer to the... Figure 5 and Figure 6 and the Figures 1 to 4 The structure of the shell 10A included in the shoe 1A of this embodiment will be described in detail.

[0111] like Figure 5 and Figure 6 As shown, the housing 10A has a basic structural portion 16 composed of bent mesh-like members 16a. As... Figures 1 to 5 As shown, the basic structure portion 16 exists throughout the entire bottom wall portion 11 and peripheral wall portion 12 of the housing 10A (i.e., the entire portion of the housing 10A except for the insertion portion 13).

[0112] Therefore, the inner surface 11a and outer surface 11b of the bottom wall portion 11 are formed by a pair of main surfaces of the base structure portion 16 made of the mesh-like member 16a. Similarly, the inner surface 12a and outer surface 12b of the peripheral wall portion 12 are also formed by a pair of main surfaces of the base structure portion 16 made of the mesh-like member 16a. Furthermore, the mesh-like member 16a does not necessarily need to be bent entirely; it may include an unbent portion within a part of itself.

[0113] The mesh-like member 16a includes a plurality of wire elements 16a1 connected in a crisscrossing manner, thereby having intersections formed by the intersection of the wire elements 16a1 and holes 14 located between adjacent wire elements 16a1. Here, Figure 6 The cross-section shown is a cross-section including the intersection of the line elements 16a1. Furthermore, in the housing 10A, the plurality of line elements 16a1 are arranged in a grid pattern in a mutually orthogonal manner, and the plurality of line elements 16a1 are arranged to extend obliquely relative to the front-back direction and the left-right direction of the shoe 1A, respectively.

[0114] As described above, the housing 10A is made lightweight by providing numerous holes 14 in the housing 10A, and is configured such that the upper body 30 housed in the internal space SP of the housing 10A can be viewed from the outside through the numerous holes 14, thereby improving its design.

[0115] The shell 10A with this structure can also be manufactured by injection molding or casting, and in particular, it can be manufactured relatively easily by the molding using the three-dimensional layering molding device.

[0116] (First to Third Modifications)

[0117] Figures 7 to 9 These are perspective views of the shells included in the shoes of the first to third modifications, respectively. Next, referring to the... Figures 7 to 9 To illustrate shoes based on the first to third modifications of embodiment 1. Furthermore, the shoes of the first to third modifications each include the aforementioned... Figures 7 to 9 The shells 10A1 to 10A3 shown are used to replace the shell 10A included in the shoe 1A of Embodiment 1, and the other structures are the same as those of Embodiment 1.

[0118] like Figure 7 As shown, the shell 10A1 of the shoe in the first modified example has a different density of the mesh members 16a, which are the basic structural parts 16, compared to the shell 10A of the shoe 1A in Embodiment 1. That is, the distance between adjacent wire elements 16a1 in the shell 10A1 is larger than that in the shell 10A, and therefore its density is smaller than that in the shell 10A.

[0119] like Figure 8 As shown, the shell 10A2 of the shoe in the second modified example, compared with the shell 10A of the shoe 1A in Embodiment 1, has a different extension direction of the plurality of wire elements 16a1 contained in the mesh-like member 16a, which is the basic structural part 16. That is, in the shell 10A2, the plurality of wire elements 16a1 are arranged in a grid pattern in a mutually orthogonal manner, and the plurality of wire elements 16a1 are arranged to extend parallel to either the front-back direction or the left-right direction of the shoe 1A.

[0120] like Figure 9 As shown, the shell 10A3 of the shoe in the third modification example has a different density of the mesh-like members 16a, which are the basic structural parts 16, compared to the shell 10A2 of the shoe in the second modification example. That is, in the shell 10A3, the distance between adjacent wire elements 16a1 is larger than that in the shell 10A2, and thus its density is smaller than that in the shell 10A2.

[0121] In addition, such as Figures 7 to 9 As shown, in the shoes of the first to third modifications, the thickness of the multiple line elements 16a1 in the shells 10A1 to 10A3 is configured to be different for each part. Specifically, in the shells 10A1 to 10A3, the thickness of the multiple line elements 16a1 in the forefoot part R1 (the front part), the inner edge of the forefoot part R1, the outer edge of the forefoot part R1, the inner edge of the midfoot part R2, the outer edge of the midfoot part R2, and the rear foot part R3 (especially the part covering the heel of the wearer's foot) is configured to be thicker than in other parts.

[0122] As described above, by varying the thickness of the wire element 16a1 of the mesh-like member 16a, which serves as the basic structural part 16, according to each part of the shell 10A1 to shell 10A3, the rigidity of the shell 10A1 to shell 10A3 can be varied according to each part. This allows for improvements in fit, adjustments in the degree of load transfer, adjustments in shape retention strength, and improvements in durability. By adjusting these according to the intended use of the shoe, high-performance shoes can be manufactured.

[0123] (Implementation Method 2)

[0124] Figure 10 This is a perspective view of the shell included in the shoe according to embodiment 2. Figure 11 yes Figure 10 The diagram shows a schematic plan view of the casing. First, refer to the... Figure 10 and Figure 11 To illustrate the shoe of this embodiment. Furthermore, the shoe of this embodiment includes... Figure 10 and Figure 11 The shell 10B shown here replaces the shell 10A included in the shoe 1A of Embodiment 1, and the other structures are the same as those of Embodiment 1.

[0125] like Figure 10 and Figure 11 As shown, the shoe of this embodiment includes a shell 10B that, like the shell 10A in Embodiment 1, includes a bottom wall portion 11 and a peripheral wall portion 12, with an insertion portion 13 in the shape of an opening at the upper end of the peripheral wall portion 12. The bottom wall portion 11 and the peripheral wall portion 12 of the shell 10B are composed of mesh-like members 16a that serve as basic structural portions 16, and consequently, numerous holes 14 are formed on the shell 10B in these portions.

[0126] In the housing 10B, the portion of the peripheral wall portion 12 that forms the upper side space SP2 that covers the instep of the wearer's foot, the portion that covers the heel of the wearer's foot, and the portion adjacent to the shoe opening 33 into which the wearer's foot is inserted are all configured as a multi-layer structure portion A2. The remaining portion of the peripheral wall portion 12 that forms the upper side space SP2, the bottom wall portion 11 that forms the lower side space SP1, and the peripheral wall portion 12 are all configured as a single-layer structure portion A1.

[0127] Here, in Figure 11 In the diagram, for ease of understanding, the boundary between the single-layer structure A1 and the multi-layer structure A2 is indicated by dashed lines. Furthermore, in the housing 10B, the portion of the multi-layer structure A2 that covers the heel of the wearer's foot and the portion adjacent to the shoe opening 33 into which the wearer's foot is inserted are arranged in a continuous manner.

[0128] Figure 12A yes Figure 10 The diagram shows a partial cross-sectional view of the shell. Figure 12B It is used for explanation Figure 10 A partial cross-sectional view of another structural example of the shell shown. Next, referring to the... Figure 12A and Figure 12B The structure of the multi-layer structure A2 of the housing 10B will be described in detail.

[0129] like Figure 12A As shown, in the housing 10B, as described above, each layer contained in the multilayer structure A2 is composed of a mesh-like member 16a serving as a base structure 16. Specifically, in the multilayer structure A2, the base structure 16 is configured to branch from the boundary between the single-layer structure A1 and the multilayer structure A2, thereby stacking the two base structure 16 layers along the thickness direction of the peripheral wall 12.

[0130] Furthermore, in the multi-layer structure A2 that includes the two basic structural sections 16, the intersection points of the line elements 16a1 contained in the two basic structural sections 16 are arranged so that they face each other, and the opposing intersection points are connected to each other by a connecting part 16a2. The connecting part 16a2 functions as a deformable part that is more prone to deformation than the basic structural section 16.

[0131] Therefore, by configuring it as described above, in the portion where the multi-layer structure A2 is provided, deformation occurs via the connecting portion 16a2, and the multi-layer structure A2 is easily compressed and deformed along the thickness direction of the peripheral wall portion 12. Therefore, by providing the multi-layer structure A2 in portions where wearing pressure is relatively easy to increase—namely, the portion covering the instep of the wearer's foot, the portion covering the heel of the wearer's foot, and the portion adjacent to the shoe opening 33 into which the wearer's foot is inserted—wearing comfort can be improved.

[0132] Furthermore, by constructing it as described above, the thickness of the peripheral wall portion 12 in the portion where the multi-layer structure portion A2 is provided is increased overall, thereby strengthening the peripheral wall portion 12 in the portion where the multi-layer structure portion A2 is provided.

[0133] Therefore, by manufacturing the shoe according to this embodiment, in addition to the effects described in Embodiment 1, it is possible to further achieve the effects of improved wearing comfort and enhanced comfort. In particular, the shell 10B having this structure can be manufactured relatively easily by the shaping using the three-dimensional layering shaping device.

[0134] Furthermore, the multi-layer structure A2 does not necessarily need to be provided in all of the three parts; improved wearing comfort can be achieved by providing it in any of these parts. Additionally, the multi-layer structure A2 does not necessarily need to consist of two basic structure parts 16; it can also consist of three or more basic structure parts 16. Moreover, from the viewpoint of improving or enhancing wearing comfort, the multi-layer structure A2 can be provided in parts other than the three parts, depending on the purpose of the shoe. Furthermore, depending on the situation, the entire sole wall 11 and peripheral wall 12 can also be composed of the multi-layer structure A2.

[0135] On the other hand, Figure 12B In the housing 10B' of another structural example shown, the connecting portion 16a2 is not provided, and the multi-layer structure portion A2 is composed only of two stacked basic structure portions 16. With the configuration described above, in addition to the effects explained in Embodiment 1, an enhanced effect can be further obtained.

[0136] (Implementation Method 3)

[0137] Figure 13 This is a perspective view of the shell included in the shoe according to embodiment 3. Figure 14 yes Figure 13 The diagram shows a schematic bottom view of the casing. First, refer to the... Figure 13 and Figure 14 To illustrate the shoe of this embodiment. Furthermore, the shoe of this embodiment includes... Figure 13 and Figure 14 The shell 10C shown is used to replace the shell 10A included in the shoe 1A of Embodiment 1, and the other structures are the same as those of Embodiment 1.

[0138] like Figure 13 and Figure 14 As shown, the shoe of this embodiment includes a shell 10C that, like the shell 10A in Embodiment 1, includes a bottom wall portion 11 and a peripheral wall portion 12, with an insertion portion 13 in the shape of an opening at the upper end of the peripheral wall portion 12. The bottom wall portion 11 and the peripheral wall portion 12 of the shell 10C are composed of mesh-like members 16a that serve as basic structural portions 16, and consequently, numerous holes 14 are formed on the shell 10C in these portions.

[0139] In the housing 10C, the bottom wall portion 11 is configured as a multi-layered structure portion A2, and the peripheral wall portion 12 is configured as a single-layered structure portion A1. Here, in Figure 14 In the diagram, for ease of understanding, the boundary between the single-layer structure A1 and the multi-layer structure A2 is represented by a dashed line.

[0140] Figure 15A yes Figure 13 The diagram shows a partial cross-sectional view of the shell. Figure 15B It is used for explanation Figure 13 A partial cross-sectional view of another structural example of the shell shown. Next, referring to the... Figure 15A and Figure 15B The structure of the multi-layer structure A2 of the housing 10C will be described in detail.

[0141] like Figure 15A As shown, in the housing 10C, as described above, each layer contained in the multilayer structure A2 is composed of a mesh-like member 16a serving as a base structure 16. Specifically, in the multilayer structure A2, the base structure 16 is configured to branch from the boundary between the single-layer structure A1 and the multilayer structure A2, thereby stacking the two base structure 16 layers along the thickness direction of the bottom wall 11.

[0142] Furthermore, in the multi-layer structure A2 that includes the two basic structural sections 16, the intersection points of the line elements 16a1 contained in the two basic structural sections 16 are arranged so that they face each other, and the opposing intersection points are connected to each other by a connecting part 16a2. The connecting part 16a2 functions as a deformable part that is more prone to deformation than the basic structural section 16.

[0143] Therefore, by configuring it as described above, in the portion where the multi-layer structure A2 is provided, deformation occurs via the connecting portion 16a2, and the multi-layer structure A2 is easily compressed and deformed along the thickness direction of the bottom wall portion 11. Therefore, by providing the multi-layer structure A2 in the bottom wall portion 11, cushioning performance can be improved.

[0144] Furthermore, by constructing it as described above, the overall thickness of the bottom wall portion 11 in the portion where the multi-layer structure portion A2 is provided is increased, thereby strengthening the bottom wall portion 11 in the portion where the multi-layer structure portion A2 is provided.

[0145] Therefore, by manufacturing the shoe according to this embodiment, in addition to the effects described in Embodiment 1, it is possible to further obtain the effects of improved cushioning and reinforcement. In particular, the shell 10C having this structure can be manufactured relatively easily by the shaping using the three-dimensional layering shaping device.

[0146] Furthermore, the multi-layer structure A2 does not necessarily need to be composed of two basic structure sections 16, but may be composed of three or more basic structure sections 16.

[0147] On the other hand, Figure 15B In another structural example of the housing 10C' shown, the thickness of the base structure 16 that defines the ground plane, i.e., the outer surface 11b of the bottom wall portion 11, in the two base structure portions 16 constituting the multi-layer structure portion A2 is made thicker than the thickness of the base structure portion 16 defining the internal space SP. When configured as described above, the overall thickness of the bottom wall portion 11 is increased, thereby achieving a strengthening effect and improving durability.

[0148] (Implementation Method 4)

[0149] Figure 16 This is a perspective view of the shell included in the shoe according to embodiment 4. Figure 17 yes Figure 16 The diagram shows a partial cross-sectional view of the casing. Hereinafter, reference will be made to the... Figure 16 and Figure 17 To illustrate the shoe of this embodiment. Furthermore, the shoe of this embodiment includes... Figure 16 and Figure 17 The shell 10D shown is used to replace the shell 10A included in the shoe 1A of Embodiment 1, and the other structures are the same as those of Embodiment 1.

[0150] like Figure 16 and Figure 17As shown, the shoe of this embodiment includes a shell 10D that, like the shell 10A in Embodiment 1, includes a bottom wall portion 11 and a peripheral wall portion 12, with an insertion portion 13 having an opening shape at the upper end of the peripheral wall portion 12. The bottom wall portion 11 and the peripheral wall portion 12 of the shell 10D are composed of mesh-like members 16a that serve as the basic structural portion 16, and consequently, numerous holes 14 are formed on the shell 10D in these portions.

[0151] In the housing 10D, the bottom wall portion 11 is configured as a multi-layer structure portion A2, and the peripheral wall portion 12 is configured as a single-layer structure portion A1. Here, at the boundary between the single-layer structure portion A1 and the multi-layer structure portion A2, i.e., at the junction of the bottom wall portion 11 and the peripheral wall portion 12, a linear frame portion 15 that is thicker than the linear element 16a1 constituting the basic structure portion 16 is provided.

[0152] like Figure 17 As shown, in the housing 10D, as described above, each layer contained in the multilayer structure A2 is composed of a mesh-like member 16a serving as a base structure 16. Specifically, in the multilayer structure A2, the base structure 16 is configured to branch from the boundary portion, i.e., the frame-like portion 15, between the single-layer structure A1 and the multilayer structure A2, thereby stacking the two base structure portions 16 along the thickness direction of the bottom wall portion 11.

[0153] Furthermore, in the multi-layer structure A2 comprising the two-layer base structure portions 16, the intersection points of the line elements 16a1 contained in the stacked base structure portions 16 are connected to each other by connecting portions 16a2. Here, the connecting portions 16a2 do not necessarily extend along the thickness direction of the bottom wall portion 11, but extend randomly in a manner intersecting the thickness direction. The connecting portions 16a2 function as deformable portions that are more prone to deformation than the base structure portions 16.

[0154] In addition, Figure 17 In the illustration, for ease of drawing, it is shown that any one of the multiple connecting parts 16a2 is only along the same path as the described. Figure 17 The cross-section shown extends in a parallel direction, and regarding the plurality of connecting portions 16a2, when viewed along the thickness direction of the bottom wall portion 11, they are formed to also extend in each direction.

[0155] In the configuration described above, in the portion where the multi-layer structure A2 is provided, deformation occurs via the connecting portion 16a2, and the multi-layer structure A2 is also easily compressed and deformed along the thickness direction of the bottom wall portion 11. Therefore, by providing the multi-layer structure A2 in the bottom wall portion 11, the cushioning performance can be improved.

[0156] Furthermore, by constructing it as described above, the overall thickness of the bottom wall portion 11 in the portion where the multi-layer structure portion A2 is provided is increased, thereby strengthening the bottom wall portion 11 in the portion where the multi-layer structure portion A2 is provided.

[0157] Therefore, by manufacturing the shoe according to this embodiment, in addition to the effects described in Embodiment 1, it is possible to further obtain the effects of improved cushioning and reinforcement. In particular, the shell 10D having this structure can be manufactured relatively easily by the shaping using the three-dimensional layering shaping device.

[0158] Furthermore, the multi-layer structure A2 does not necessarily need to be composed of two basic structure sections 16, but may be composed of three or more basic structure sections 16.

[0159] (Implementation Method 5)

[0160] Figure 18 This is a partial cross-sectional view of the shell included in the shoe of embodiment 5. Figure 19 It is Figure 18 The diagram shows a schematic bottom view of a portion of the casing in a cross-section. Hereinafter, referring to the... Figure 18 and Figure 19 To illustrate the shoe of this embodiment. Furthermore, the shoe of this embodiment includes... Figure 18 and Figure 19 The shell 10E shown is used to replace the shell 10A included in the shoe 1A of Embodiment 1, and the other structures are the same as those of Embodiment 1.

[0161] like Figure 18 As shown, the shoe in this embodiment includes a shell 10E that, like the shell 10A in embodiment 1, includes a bottom wall portion 11 and a peripheral wall portion 12. Although... Figure 18 The insertion portion 13, which is not shown in the middle, has an opening shape at the upper end of the peripheral wall portion 12. The bottom wall portion 11 and the peripheral wall portion 12 of the housing 10E are composed of a mesh-like member 16a, which serves as the basic structural portion 16. Along with this, numerous holes 14 are formed on the housing 10E in the said portion.

[0162] In the housing 10E, the bottom wall portion 11 is configured as a multi-layer structure portion A2, and the peripheral wall portion 12 is configured as a single-layer structure portion A1. Here, at the boundary between the single-layer structure portion A1 and the multi-layer structure portion A2, i.e., at the junction of the bottom wall portion 11 and the peripheral wall portion 12, a linear frame portion 15 that is thicker than the linear element 16a1 constituting the basic structure portion 16 is provided.

[0163] like Figure 18As shown, in the housing 10E, as described above, each layer contained in the multi-layer structure A2 is composed of a mesh-like member 16a serving as the base structure 16. Specifically, in the multi-layer structure A2, the base structure 16 is configured to branch from the boundary portion, i.e., the frame-like portion 15, between the single-layer structure A1 and the multi-layer structure A2, thereby stacking the three base structure portions 16 along the thickness direction of the bottom wall portion 11.

[0164] Here, the base structure 16 of the three-layer base structure 16, which specifies the ground plane, i.e. the outer surface 11b of the bottom wall 11, and the base structure 16 of the specified internal space SP are arranged in a grid-like manner with the multiple line elements 16a1 contained therein being orthogonal to each other.

[0165] On the other hand, such as Figure 19 As shown, the intermediate layer of the base structure 16, disposed between the two base structure sections 16, has a shape in which the line elements 16a3 are distributed in a Voronoi pattern. Furthermore, in Figure 19 For ease of understanding, the diagrams of the basic structural part 16 of the bottom wall part 11, which defines the grounding surface (i.e., the outer surface 11b of the bottom wall part 11) and the basic structural part 16 of the defined internal space SP are omitted, and the boundary between the single-layer structural part A1 and the multi-layer structural part A2 is represented by dashed lines.

[0166] The intermediate layer of the base structure 16, which includes the 16a3 wire elements distributed in a thione polygonal pattern, is configured such that the mesh size is larger than that of other base structure parts 16. By configuring it as described above, the intermediate layer of the base structure 16 functions as a deformable part that is more prone to deformation than other base structure parts 16.

[0167] Furthermore, such as Figure 18 As shown, in the multi-layer structure A2 that includes the three-layer basic structure section 16, a portion of the intersection point of the line elements 16a1 and 16a3 contained in two adjacent basic structure sections 16 faces each other, and the opposing intersection points are connected to each other by a connecting portion 16a2. The connecting portion 16a2 functions as a deformable portion that is more prone to deformation than the basic structure section 16.

[0168] Therefore, by configuring it as described above, in the portion where the multi-layer structure A2 is provided, the multi-layer structure A2 is easily compressed and deformed along the thickness direction of the bottom wall portion 11 due to the deformation of the base structure portion 16 and the connecting portion 16a2, which serve as the intermediate layer. Therefore, by providing the multi-layer structure A2 in the bottom wall portion 11, the cushioning performance can be improved.

[0169] Furthermore, by constructing it as described above, the overall thickness of the bottom wall portion 11 in the portion where the multi-layer structure portion A2 is provided is increased, thereby strengthening the bottom wall portion 11 in the portion where the multi-layer structure portion A2 is provided.

[0170] Therefore, by manufacturing the shoe according to this embodiment, in addition to the effects described in Embodiment 1, it is possible to further obtain the effects of improved cushioning and reinforcement. In particular, the shell 10E having this structure can be manufactured relatively easily by the shaping using the three-dimensional layering shaping device.

[0171] Furthermore, the basic structural part 16, which serves as the intermediate layer, does not necessarily need to be a single layer; two or more layers may be provided. In addition, in the intermediate layer, it is not necessary to distribute the line elements 16a3 in a Thiessen polygonal pattern as described above; they may be distributed in a truss pattern, a grid pattern, a honeycomb pattern, or the like.

[0172] (Implementation Method 6)

[0173] Figure 20 This is a partial cross-sectional view of the shell included in the shoe according to Embodiment 6. Hereinafter, reference will be made to the... Figure 20 To illustrate the shoe of this embodiment. Furthermore, the shoe of this embodiment includes... Figure 20 The shell 10F shown is used to replace the shell 10A included in the shoe 1A of Embodiment 1, and the other structures are the same as those of Embodiment 1.

[0174] like Figure 20 As shown, the shoe in this embodiment includes a shell 10F that, like the shell 10A in embodiment 1, includes a bottom wall portion 11 and a peripheral wall portion 12. Although in Figure 20 The insertion portion 13, which is not shown in the middle, has an opening shape at the upper end of the peripheral wall portion 12. The bottom wall portion 11 and the peripheral wall portion 12 of the housing 10F are composed of a mesh-like member 16a, which serves as the basic structural portion 16. Along with this, numerous holes 14 are formed on the housing 10F in the said portion.

[0175] In the housing 10F, the bottom wall portion 11 is configured as a multi-layer structure portion A2, and the peripheral wall portion 12 is configured as a single-layer structure portion A1. Here, at the boundary between the single-layer structure portion A1 and the multi-layer structure portion A2, i.e., at the junction of the bottom wall portion 11 and the peripheral wall portion 12, a linear frame portion 15 that is thicker than the linear element 16a1 constituting the basic structure portion 16 is provided.

[0176] In the multi-layer structure A2, the base structure 16 is configured to branch from the boundary portion, i.e., the frame-like portion 15, between the single-layer structure A1 and the multi-layer structure A2. Thus, the two base structure portions 16 are stacked along the thickness direction of the bottom wall portion 11, and a plate-shaped embedded layer 16a4 is provided between the two base structure portions 16. The embedded layer 16a4 is integrated with each of the wire elements 16a1 contained in the two base structure portions 16.

[0177] With the configuration described above, the overall thickness of the bottom wall portion 11 in the portion where the multi-layer structure portion A2 is provided is increased, thereby strengthening the bottom wall portion 11 in the portion where the multi-layer structure portion A2 is provided. Furthermore, with the configuration described above, the holes 14 provided in the two base structure portions 16 are also blocked by the plate-shaped embedded layer 16a4, and the overall rigidity of the bottom wall portion 11 is also greatly increased.

[0178] Therefore, by manufacturing the shoe according to this embodiment, in addition to the effects described in Embodiment 1, an enhanced effect can be further obtained. The shell 10F having this structure can also be manufactured by injection molding or casting molding, and in particular, it can be manufactured relatively easily by the molding using the three-dimensional layering molding device.

[0179] (Implementation Method 7)

[0180] Figure 21 This is a partial cross-sectional view of the shell included in the shoe according to Embodiment 7. Hereinafter, reference will be made to the... Figure 21 To illustrate the shoe of this embodiment. Furthermore, the shoe of this embodiment includes... Figure 21 The shell 10G shown is used to replace the shell 10A included in the shoe 1A of Embodiment 1, and the other structures are the same as those of Embodiment 1.

[0181] like Figure 21 As shown, the shoe in this embodiment includes a shell 10G that, like the shell 10A in embodiment 1, includes a bottom wall portion 11 and a peripheral wall portion 12. Although... Figure 21 The peripheral wall portion 12 of the housing 10G is not shown in the diagram, but has an opening-shaped insertion portion 13 at its upper end. The peripheral wall portion 12 of the housing 10G is composed of a mesh-like member 16a, which serves as the basic structural portion 16, and consequently, numerous holes 14 are formed in this portion of the housing 10G. On the other hand, the bottom wall portion 11 of the housing 10G is composed of a plate-like member 16b, which serves as the basic structural portion 16, and consequently, no holes 14 are formed in this portion of the housing 10G.

[0182] In the configuration described above, the bottom wall portion 11 is composed of a plate-shaped member 16b without holes, thus greatly increasing the rigidity of the bottom wall portion 11.

[0183] Therefore, by manufacturing the shoe according to this embodiment, in addition to the effects described in Embodiment 1, the strength of the sole wall portion 11 can also be improved. The shell 10G having this structure can also be manufactured by injection molding or casting molding, and in particular, it can be manufactured relatively easily by the molding using the three-dimensional layering molding device.

[0184] (Implementation Method 8)

[0185] Figure 22 This is a perspective view of the shell included in the shoe according to embodiment 8. Additionally, Figure 23A yes Figure 22 The diagram shows a partial cross-sectional view of the single-layer structure of the shell. Figure 23B yes Figure 22 The diagram shows a partial cross-sectional view of the multi-layered structure of the shell. Hereinafter, reference will be made to the... Figure 22 , Figure 23A and Figure 23B To illustrate the shoe of this embodiment. Furthermore, the shoe of this embodiment includes... Figure 22 , Figure 23A and Figure 23B The shell 10H shown is used to replace the shell 10A included in the shoe 1A of Embodiment 1, and the other structures are the same as those of Embodiment 1.

[0186] like Figure 22 , Figure 23A and Figure 23B As shown, the shoe of this embodiment includes a shell 10H that, like the shell 10A in Embodiment 1, includes a bottom wall portion 11 and a peripheral wall portion 12, with an insertion portion 13 in the shape of an opening at the upper end of the peripheral wall portion 12. The bottom wall portion 11 and the peripheral wall portion 12 of the shell 10H are composed of a mesh-like member 16a serving as a basic structural portion 16, and consequently, numerous holes 14 are formed on the shell 10H in these portions.

[0187] In the shell 10H, the portion of the peripheral wall portion 12 forming the upper side space SP2 that covers the instep of the wearer's foot, the portion that covers the heel of the wearer's foot, and the portion adjacent to the shoe opening 33 into which the wearer's foot is inserted are all configured as multi-layered structural portions A2. The remaining portion of the peripheral wall portion 12 forming the upper side space SP2, the bottom wall portion 11 forming the lower side space SP1, and the peripheral wall portion 12 are all configured as single-layered structural portions A1. Furthermore, the structures of the single-layered structural portion A1 and the multi-layered structural portion A2 are substantially the same as those of the shell 10B included in the shoe of Embodiment 2.

[0188] In the housing 10H, the peripheral wall portion 12 is configured to include a design portion 17 in addition to the basic structural portion 16. The design portion 17 is provided to improve the design of the shoe including the housing 10H, and is formed in the housing 10H in a manner that is visible from the outside. Furthermore, the design portion 17 is provided in the housing 10H as a pattern of curves that extend in a meandering manner.

[0189] like Figure 23A As shown, in the single-layer structure section A1, in the design area B2 where the design section 17 is provided, the design section 17 is provided in such a way that it covers a portion of the surface of the base structure section 16 (i.e., the outer surface 12b of the peripheral wall section 12). The design section 17 is integrated with each of the line elements 16a1 included in the base structure section 16. On the other hand, in the non-design area B1 where the design section 17 is not provided, only the base structure section 16 exists.

[0190] like Figure 23B As shown, in the multi-layer structure section A2, in the design area B2 where the design section 17 is provided, the design section 17 is provided in such a way that it covers a portion of the surface of one of the base structure sections 16 whose outer surface 12b of the defined peripheral wall portion 12 is defined. The design section 17 is integrated with each of the line elements 16a1 contained in the base structure section 16 whose outer surface 12b of the defined peripheral wall portion 12 is defined. On the other hand, in the non-design area B1 where the design section 17 is not provided, there are only two base structure sections 16.

[0191] With the configuration described above, the design of the shoe, including the housing 10H, is improved. Furthermore, in the section where the design section 17 is provided, the design section 17 also provides an enhanced effect.

[0192] Therefore, by manufacturing the shoe according to this embodiment, in addition to the effects described in Embodiment 1, it is also possible to obtain the effect of making a shoe with excellent aesthetics and an enhanced effect. In particular, the shell 10H having this structure can be manufactured relatively easily by the shaping using the three-dimensional layering shaping device.

[0193] Figure 24A yes Figure 22 A partial cross-sectional view of a single-layer structure in another example of the shell structure shown. Figure 24B yes Figure 22 A partial cross-sectional view of the multi-layered structure in another structural example of the shell shown. Hereinafter, reference will be made to the... Figure 24A and Figure 24B To explain Figure 22 Another structural example of the shell shown.

[0194] like Figure 24A and Figure 24BAs shown, in another structural example of the housing 10H', the design section 17 is configured to completely cover not only a portion of the surface of the basic structural section 16. That is, as... Figure 24A As shown, in the single-layer structure section A1, in the design area B2 where the design section 17 is provided, the wire element 16a1 contained in the basic structure section 16 is completely embedded through the design section 17, such as... Figure 24B As shown, in the multi-layer structure section A2, in the design area B2 where the design section 17 is provided, the wire element 16a1 contained in one of the two-layer base structure sections 16 is completely embedded in the outer surface 12b of the peripheral wall section 12 of the base structure section 16 through the design section 17.

[0195] In the configuration described above, in addition to the effects explained in Embodiment 1, it is also possible to obtain the effect of making shoes that are aesthetically pleasing and of enhancing quality.

[0196] (Fourth and Fifth Variations)

[0197] Figure 25 and Figure 26 These are perspective views of the shells included in the shoes of the fourth and fifth modifications, respectively. Next, referring to the... Figure 25 and Figure 26 To illustrate the shoes based on the fourth and fifth variations of embodiment 8, the following description is provided. Furthermore, the shoes in the fourth and fifth variations respectively include the... Figure 25 and Figure 26 The shells 10H1 and 10H2 shown are used to replace the shell 10A included in the shoe 1A of Embodiment 1, and the other structures are the same as those of Embodiment 1.

[0198] like Figure 25 As shown, the design of the design section 17 in the shoe of the fourth variation differs from that in the shoe of embodiment 8. Specifically, the design section 17 in the shoe shell 10H1 features a pattern of curves or straight lines extending like tree branches.

[0199] like Figure 26 As shown, the design of the design section 17 of the shoe shell 10H2 in the fifth variation differs from that of the shoe shell 10H in embodiment 8. Specifically, the design section 17 in the shell 10H2 features a pattern of curves or straight lines extending in a maze-like pattern.

[0200] As described above, the design of the design department 17 can be modified in various ways. In addition, the design department 17 can also be made into a logo or various other designs.

[0201] (Implementation Method 9)

[0202] Figure 27 This is a perspective view of the shell included in the shoe according to embodiment 9. Hereinafter, reference will be made to the described... Figure 27 To illustrate the shoe of this embodiment. Furthermore, the shoe of this embodiment includes... Figure 27 The shell 10I shown here replaces the shell 10A included in the shoe 1A of Embodiment 1, and the other structures are the same as those of Embodiment 1.

[0203] like Figure 27 As shown, the shoe of this embodiment includes a shell 10I, which, like the shell 10A in Embodiment 1, includes a bottom wall portion 11 and a peripheral wall portion 12, with an insertion portion 13 in the shape of an opening at the upper end of the peripheral wall portion 12. The bottom wall portion 11 and the peripheral wall portion 12 of the shell 10I are composed of a mesh-like member 16a serving as a basic structural portion 16, and consequently, numerous holes 14 are formed on the shell 10I in these portions.

[0204] In the housing 10I, an opening 11c is provided at approximately the center of the bottom wall portion 11 (i.e., the portion corresponding to the arch of the wearer's foot). When the opening 11c is provided in the housing 10I as described above, the portion with the opening 11c allows the lower surface 22 of the sole body 20 to be exposed over a relatively large area compared to the portion with the hole portion 14.

[0205] Therefore, by providing various markings or displays such as shoe size on the lower surface 22 of the exposed portion of the sole body 20, it is possible to identify it from the outside.

[0206] Therefore, by manufacturing the shoe according to this embodiment, in addition to the effects described in Embodiment 1, various displays can be easily provided on the sole of the shoe. The shell 10I having this structure can also be manufactured by injection molding or casting molding, and in particular, it can be manufactured relatively easily by the molding using the three-dimensional layering molding device.

[0207] Furthermore, there are no particular restrictions on the location, number, size, or shape of the openings, and appropriate modifications can be made. In particular, it is not necessary to place the openings on the bottom wall of the shell; they can also be placed on the peripheral wall of the shell.

[0208] (Implementation Method 10)

[0209] Figure 28 This is a partial cross-sectional perspective view of the shell included in the shoe of Embodiment 10. Hereinafter, reference will be made to the... Figure 28 To illustrate the shoe of this embodiment. Furthermore, the shoe of this embodiment includes... Figure 28The shell 10J shown is used to replace the shell 10A included in the shoe 1A of Embodiment 1, and the other structures are the same as those of Embodiment 1.

[0210] like Figure 28 As shown, the shoe of this embodiment includes a shell 10J that, like the shell 10A in Embodiment 1, includes a bottom wall portion 11 and a peripheral wall portion 12, with an insertion portion 13 in the shape of an opening at the upper end of the peripheral wall portion 12. The bottom wall portion 11 and the peripheral wall portion 12 of the shell 10J are composed of a mesh-like member 16a, which serves as a basic structural portion 16, and consequently, numerous holes 14 are formed on the shell 10J in these portions.

[0211] In the housing 10J, a protrusion 11d is provided at approximately the center of the bottom wall portion 11 corresponding to the front leg portion R1 and at approximately the forward center of the bottom wall portion 11 corresponding to the rear leg portion R3. The protrusion 11d is configured to protrude from the inner surface 11a of the bottom wall portion 11 toward the internal space SP side.

[0212] The protrusion 11d serves as a guide when assembling the sole body 20 onto the housing 10J, and after assembly, it prevents the sole body 20 from shifting relative to the housing 10J. A recess (not shown) corresponding to the protrusion 11d is provided on the sole body 20.

[0213] As described above, by manufacturing the shoe according to this embodiment, in addition to the effects described in Embodiment 1, it is also possible to facilitate the assembly operation during manufacturing and to prevent displacement of the assembled sole body 20. The shell 10J with this structure can also be manufactured by injection molding or casting molding, and in particular, it can be manufactured relatively easily by the molding using the three-dimensional layering molding device.

[0214] Furthermore, there are no particular restrictions on the location, number, size, or shape of the protrusions, and they can be appropriately modified. Additionally, the protrusions do not necessarily need to be located on the bottom wall of the shell; they can also be located on the peripheral wall of the portion facing the sole body, i.e., the first part.

[0215] (Implementation Method 11)

[0216] Figure 29 This is an exploded perspective view of the shell included in the shoe according to embodiment 11. Hereinafter, referring to the... Figure 29 To illustrate the shoe of this embodiment. Furthermore, the shoe of this embodiment includes... Figure 29 The shell 10K shown is used to replace the shell 10A included in the shoe 1A of Embodiment 1, and the other structures are the same as those of Embodiment 1.

[0217] like Figure 29 As shown, the shoe of this embodiment includes a shell 10K constructed by combining a first shell portion 18 and a second shell portion 19, which are multiple components. The first shell portion 18 includes a portion corresponding to the forefoot portion R1 and a portion corresponding to approximately half of the front side of the midfoot portion R2, and the second shell portion 19 includes a portion corresponding to approximately half of the rear side of the midfoot portion R2 and a portion corresponding to the rearfoot portion R3. Thus, the shell 10K is divided into two parts approximately at its center in the front-to-back direction.

[0218] The first housing portion 18 and the second housing portion 19 each include a bottom wall portion 11 and a peripheral wall portion 12. The second housing portion 19 has an insertion portion 13 with an opening shape at the upper end of its peripheral wall portion 12. The bottom wall portion 11 and the peripheral wall portion 12 of the first housing portion 18 and the second housing portion 19 are composed of a mesh-like member 16a as a basic structural portion 16. Accordingly, numerous holes 14 are formed on the first housing portion 18 and the second housing portion 19.

[0219] A joining portion 18a is provided at the rear end of the first housing portion 18, the joining portion 18a including a frame-shaped portion 18b and a protrusion 18c provided on the rear end face of the frame-shaped portion 18b. On the other hand, a joining portion 19a is provided at the front end of the second housing portion 19, the joining portion 19a including a frame-shaped portion 19b and a recess 19c provided on the front end face of the frame-shaped portion 19b.

[0220] The first housing portion 18 and the second housing portion 19 are assembled together by joining portions 18a and 19a provided thereon. Specifically, the rear end face of the joining portion 18a provided in the first housing portion 18 abuts against the front end face of the joining portion 19a provided in the second housing portion 19, and the protrusion 18c provided in the first housing portion 18 engages with the recess 19c provided in the second housing portion 19, thereby assembling the first housing portion 18 and the second housing portion 19.

[0221] Furthermore, in cases where sufficient engagement force cannot be obtained solely through fitting based on the protrusion 18c and the recess 19c, other methods such as bonding, welding, clamping, or interlocking based on the engaging portions (snap fit structures, etc.) provided on the first housing portion 18 and the second housing portion 19 may also be used.

[0222] When configured as described above, the same effects as those described in Embodiment 1 can be obtained. The housing 10K with this structure can also be manufactured by injection molding or casting, and in particular, it can be manufactured relatively easily by the molding process using the three-dimensional layering molding apparatus.

[0223] Here, when the shell is manufactured using the three-dimensional stacking molding apparatus, it is sometimes advantageous to construct the shell from multiple components, as in this embodiment. That is, the three-dimensional stacking molding apparatus is often limited by the size of the object, and the manufacturing time increases with the size of the object. Therefore, by combining multiple components to construct the shell, it is less constrained by the size, and by manufacturing the multiple components simultaneously and in parallel, the shell can be manufactured in a shorter time.

[0224] Therefore, by manufacturing the shoe according to this embodiment, in addition to the effects described in Embodiment 1, the effect of facilitating manufacturing can also be obtained. Furthermore, in this embodiment, the joint portion 18a provided in the first housing portion 18 and the joint portion 19a provided in the second housing portion 19 include portions that protrude outward from their peripheral wall portions 12 in a flange-like manner, and these portions are configured to be continuous with the outer surface 12b of the peripheral wall portions 12, so that the joint portions 18a and 19a are not conspicuous.

[0225] (Sixth variation)

[0226] Figure 30 This is an exploded perspective view of the shell included in the shoe of the sixth variation. Next, referring to the... Figure 30 To illustrate, a shoe based on a sixth modification of embodiment 11 will be described. Furthermore, the shoe of the sixth modification includes... Figure 30 The shell 10K' shown is used to replace the shell 10A included in the shoe 1A of Embodiment 1, and the other structures are the same as those of Embodiment 1.

[0227] like Figure 30 As shown, the structure of the joint portion 18a and joint portion 19a differs between the shell 10K' included in the shoe of the sixth modification example and the shell 10K included in the shoe of embodiment 11. That is, in the shell 10K', the joint portion 18a includes a frame-shaped portion 18b and a stepped portion 18d provided on the rear end face of the frame-shaped portion 18b, and the joint portion 19a includes a frame-shaped portion 19b and a stepped portion 19d provided on the front end face of the frame-shaped portion 19b.

[0228] The first housing portion 18 and the second housing portion 19 are assembled together by joining portions 18a and 19a provided thereon. Specifically, the rear end face of the joining portion 18a provided in the first housing portion 18 abuts against the front end face of the joining portion 19a provided in the second housing portion 19, and the step portion 18d provided in the first housing portion 18 fits into the step portion 19d provided in the second housing portion 19, thereby assembling the first housing portion 18 and the second housing portion 19.

[0229] Furthermore, in cases where sufficient bonding force cannot be obtained solely through fitting based on the step portion 18d and the step portion 19d, other methods such as bonding, welding, clamping, or fitting based on the engaging portions (fastening structures, etc.) provided on the first housing portion 18 and the second housing portion 19 may also be used.

[0230] When configured as described above, the effects explained in Embodiment 1 are also obtained, and in the case of making the shell by shaping using the three-dimensional layering shaping device, the manufacturing process is made easier.

[0231] (Implementation Method 12)

[0232] Figure 31 This is a perspective view of the shoe according to embodiment 12. Figure 32 Observing from another direction Figure 31 The image shown is a 3D representation of the shoe. The following refers to the described... Figure 31 and Figure 32 To illustrate the shoe of this embodiment. Furthermore, the shoe of this embodiment includes... Figure 31 and Figure 32 The shell 10L shown is used to replace the shell 10A included in the shoe 1A of Embodiment 1, and the other structures are the same as those of Embodiment 1.

[0233] like Figure 31 and Figure 32 As shown, the shoe of this embodiment includes a shell 10L, which, like the shell 10A in Embodiment 1, includes a bottom wall portion 11 and a peripheral wall portion 12, and has an insertion portion 13 with an opening shape at the upper end of the peripheral wall portion 12. On the other hand, unlike the shell 10A in Embodiment 1, the bottom wall portion 11 and the peripheral wall portion 12 of the shell 10L are composed of plate-shaped members 16b that serve as the basic structural portion 16, and consequently, no holes are formed on the shell 10L in these portions.

[0234] In the configuration described above, the bottom wall portion 11 and the peripheral wall portion 12 are made of plate-shaped members 16b without holes, thus greatly increasing the rigidity of the bottom wall portion 11 and the peripheral wall portion 12.

[0235] Therefore, by manufacturing the shoe according to this embodiment, in addition to the effects described in Embodiment 1, the strength of the sole wall portion 11 and the peripheral wall portion 12 is also improved. The shell 10L having this structure can also be manufactured by injection molding or casting molding, and in particular, it can be manufactured relatively easily by the molding using the three-dimensional layering molding device.

[0236] (Implementation Method 13)

[0237] Figure 33This is a perspective view of the shoe according to embodiment 13. Hereinafter, refer to the... Figure 33 To illustrate the shoe of this embodiment. Furthermore, the shoe of this embodiment includes... Figure 33 The shell 10M shown is used to replace the shell 10A included in the shoe 1A of Embodiment 1, and the other structures are the same as those of Embodiment 1.

[0238] like Figure 33 As shown, the shoe of this embodiment includes a shell 10M that, like the shell 10A in Embodiment 1, includes a bottom wall portion 11 and a peripheral wall portion 12, with an insertion portion 13 having an opening shape at the upper end of the peripheral wall portion 12. On the other hand, unlike the shell 10A in Embodiment 1, the bottom wall portion 11 and the peripheral wall portion 12 of the shell 10M are composed of a plate-shaped member 16b, which serves as a basic structural portion 16. An opening is provided in the plate-shaped member 16b so as to reach its inner surface 11a, inner surface 12a, outer surface 11b, and outer surface 12b, and a plurality of holes 14 are formed on the shell 10M in this portion.

[0239] In the configuration described above, the bottom wall portion 11 and the peripheral wall portion 12 are made of plate-shaped members 16b, thus increasing the rigidity of the bottom wall portion 11 and the peripheral wall portion 12, and achieving weight reduction by forming a plurality of holes 14 on the plate-shaped members 16b.

[0240] Therefore, by manufacturing the shoe according to this embodiment, in addition to the effects described in Embodiment 1, the strength of the sole wall portion 11 and the peripheral wall portion 12 is increased, and the effect of lightweighting is achieved. The shell 10M having this structure can also be manufactured by injection molding or casting molding, and in particular, it can be manufactured relatively easily by the molding using the three-dimensional layering molding device.

[0241] (Implementation Method 14)

[0242] Figure 34 This is a partial perspective view of the shell included in the shoe of embodiment 14. Hereinafter, reference will be made to the described... Figure 34 To illustrate the shoe of this embodiment. Furthermore, the shoe of this embodiment includes... Figure 34 The diagram shows a portion of the housing 10N replacing the housing 10A included in the shoe 1A of Embodiment 1, with the other structures being the same as in Embodiment 1.

[0243] Compared to the shoe 1A of Embodiment 1, the shell 10N of the shoe in this embodiment has a different structure in the basic structural portion 16 of the bottom wall portion 11 and the peripheral wall portion 12. Specifically, the structure is different due to the following... Figure 34 The woven structure-like component 16c shown constitutes the basic structural part 16.

[0244] like Figure 34 As shown, the component 16c of the woven structure pattern of the basic structure part 16 includes warp elements 16c1, weft elements 16c2, and connecting parts 16c3. The warp elements 16c1 and weft elements 16c2 extend at different positions along the thickness direction of the basic structure part 16 in an intersecting manner, and the warp elements 16c1 and weft elements 16c2 are connected to each other at the connecting parts 16c3 arranged in a matrix.

[0245] By constructing the bottom and peripheral walls of the shell from a base structure with a three-dimensional shape resembling this woven fabric structure, compared to constructing the bottom and peripheral walls of the shell from a mesh-like or plate-like base structure, it is possible to design its strength, deformability, and wearing comfort with greater freedom.

[0246] Therefore, by manufacturing the shoe according to this embodiment, in addition to the effects described in Embodiment 1, superior effects such as strength, deformability, and wearing comfort are obtained. In particular, the shell 10N having this structure can be manufactured relatively easily by the shaping using the three-dimensional layering shaping device.

[0247] (Implementation Method 15)

[0248] Figure 35 This is a partial plan view of the shell included in the shoe of embodiment 15. Hereinafter, reference will be made to the... Figure 35 To illustrate the shoe of this embodiment. Furthermore, the shoe of this embodiment includes... Figure 35 The diagram shows a portion of the housing 100 replacing the housing 10A included in the shoe 1A of Embodiment 1, with the other structures being the same as in Embodiment 1.

[0249] Compared with the shoe 1A of Embodiment 1, the shell 10O of the shoe in this embodiment has a different structure in the basic structural portion 16 of the bottom wall portion 11 and the peripheral wall portion 12. Specifically, the structure is different due to the following... Figure 35 The woven structure-like component 16d shown constitutes the basic structural part 16.

[0250] like Figure 35 As shown, the woven structure component 16d, which serves as the basic structural part 16, has a pair of first porous plate elements 16d1 and second porous plate elements 16d2, which are respectively configured to have holes that are interlocked with each other.

[0251] By constructing the bottom and peripheral walls of the shell from a base structure with a three-dimensional shape resembling this woven fabric structure, compared to constructing the bottom and peripheral walls of the shell from a mesh-like or plate-like base structure, it is possible to design its strength, deformability, and wearing comfort with greater freedom.

[0252] Therefore, by manufacturing the shoe according to this embodiment, in addition to the effects described in Embodiment 1, superior effects such as strength, deformability, and wearing comfort are obtained. In particular, the shell 10O having this structure can be manufactured relatively easily by the shaping using the three-dimensional layering shaping device.

[0253] (Implementation Method 16)

[0254] Figure 36 This is a perspective view of the shoe according to embodiment 16. Hereinafter, refer to the... Figure 36 Let us explain the shoe 1B of this embodiment.

[0255] like Figure 36 As shown, the shoe 1B of this embodiment includes a shell 10P with a structure different from that of the shell 10A included in the shoe 1A of embodiment 1, but has the same structure as the shoe 1A of embodiment 1 in other aspects.

[0256] Specifically, in the housing 10P, the opening-shaped insertion portion 13 provided at the upper end of the peripheral wall portion 12 is formed to span the forefoot portion R1, the middle foot portion R2, and the rear foot portion R3. More specifically, the peripheral wall portion 12 is configured to primarily cover the portion corresponding to the toes of the wearer's foot, the portion corresponding to the inner and outer sides of the instep of the wearer's foot, and the portion corresponding to the ball of the foot in the peripheral surface of the heel of the wearer's foot. The portion corresponding to the central portion of the instep in the foot-width direction and the portion corresponding to the ankle side in the peripheral surface of the heel of the wearer's foot are generally not covered by the peripheral wall portion 12.

[0257] Therefore, the portion of the wall 32 of the upper body 30 corresponding to the central portion in the foot width direction of the instep of the wearer's foot and the portion corresponding to the ankle side in the circumference of the heel of the wearer's foot are exposed to the outside.

[0258] Here, in the shoe 1B of this embodiment, the internal space SP of the shell 10P is also divided into a lower side space SP1 and an upper side space SP2. The lower side space SP1 is defined by the first portion of the bottom wall portion 11 and the peripheral wall portion 12, and the upper side space SP2 is defined by the second portion of the peripheral wall portion 12. Moreover, by placing the sole body 20 inside the upper body 30 and housing it in the lower side space SP1, the contact surface of the shoe 1B is formed by the outer surface 11b of the bottom wall portion 11 of the shell 10P.

[0259] Therefore, in the case of shoe 1B of this embodiment, similarly to shoe 1A of embodiment 1, the freedom of material selection for the sole body can be increased, while the increase in the number of parts is suppressed, thereby making it easier to manufacture shoes than before.

[0260] (Implementation Method 17)

[0261] Figure 37 This is a perspective view of the shoe according to embodiment 17. Hereinafter, refer to the... Figure 37 To illustrate this embodiment, we will describe shoe 1C.

[0262] like Figure 37 As shown, the shoe 1C of this embodiment includes a shell 10Q with a structure different from that of the shell 10A included in the shoe 1A of embodiment 1, but has the same structure as the shoe 1A of embodiment 1 in other aspects.

[0263] Specifically, in the housing 10Q, the opening-shaped insertion portion 13 provided at the upper end of the peripheral wall portion 12 is formed to span the forefoot portion R1, the middle foot portion R2, and the rear foot portion R3. More specifically, the peripheral wall portion 12 is configured to primarily cover the portion corresponding to the front end of the wearer's toes, the portion corresponding to the inner and outer sides of the instep of the wearer's foot, the portion corresponding to the ball side of the heel of the wearer's foot, the portion corresponding to the middle portion between the ball side and the ankle side of the heel of the wearer's foot, the portion corresponding to the base of the toes of the wearer's foot, the portion corresponding to the center portion of the instep of the wearer's foot in the foot-width direction, the portion corresponding to the ankle side of the heel of the wearer's foot, and the portion of the lower rear end of the heel of the wearer's foot that is not largely covered by the peripheral wall portion 12.

[0264] Therefore, the wall portion 32 of the upper body 30 is exposed to the outside at the portion corresponding to the base of the wearer's toes, the portion corresponding to the center portion of the instep of the wearer's foot in the foot width direction, the portion corresponding to the ankle side of the heel of the wearer's foot, and the portion on the lower rear end of the heel of the wearer's foot.

[0265] Here, in the shoe 1C of this embodiment, the internal space SP of the shell 10Q is also divided into a lower side space SP1 and an upper side space SP2. The lower side space SP1 is defined by the first portion of the bottom wall portion 11 and the peripheral wall portion 12, and the upper side space SP2 is defined by the second portion of the peripheral wall portion 12. Moreover, by placing the sole body 20 inside the upper body 30 and housing it in the lower side space SP1, the contact surface of the shoe 1C is formed by the outer surface 11b of the bottom wall portion 11 of the shell 10Q.

[0266] Therefore, in the case of shoe 1C of this embodiment, similarly to shoe 1A of embodiment 1, the freedom of material selection for the sole body can be increased, while the increase in the number of parts is suppressed, thereby making it easier to manufacture shoes than before.

[0267] (Implementation Method 18)

[0268] Figure 38 This is a perspective view of the shoe according to embodiment 18. Figure 39 Observing from another direction Figure 38 The image shown is a 3D representation of the shoe. Additionally, Figure 40 It is along Figure 38 The cross-sectional view of the XL-XL line is shown. First, refer to the... Figures 38 to 40 The structure of the shoe 1D in this embodiment will be explained.

[0269] like Figures 38 to 40 As shown, the shoe 1D of this embodiment is a sock-shaped shoe that covers the wearer's foot substantially as a whole (i.e., the part further to the end than the ankle), and includes a shell 10A, a sole body 20, and an upper body 30. A part for inserting the foot, namely the shoe opening 33, is provided at the upper part of the shoe 1D, and an internal space SP is formed inside the shoe 1D as a space for the wearer's foot to insert when wearing the shoe (see reference). Figure 40 ).

[0270] In the shoe 1D of this embodiment, the sole body 20 is housed in the housing 10A, and the upper body 30 is housed in the housing 10A such that it is positioned on top of the sole body 20. Thus, the sole body 20 is held between the housing 10A and the upper body 30. The housing 10A, the sole body 20, and the upper body 30 all extend across the forefoot portion R1, the midfoot portion R2, and the rearfoot portion R3.

[0271] More specifically, the shell 10A constitutes the outermost shell of the shoe 1D and includes a single flexible member formed in a bag shape. The shell 10A includes a bottom wall portion 11 and a peripheral wall portion 12 erected in a manner that extends continuously upward from the periphery of the bottom wall portion 11. The bottom wall portion 11 defines the outermost surface located on the lower side in the vertical direction of the shoe 1D, and the peripheral wall portion 12 defines the outermost surfaces located in the front-back direction and the left-right direction of the shoe 1D.

[0272] The bottom wall portion 11 has a pair of main surfaces, namely the inner surface 11a and the outer surface 11b, and the peripheral wall portion 12 has a pair of main surfaces, namely the inner surface 12a and the outer surface 12b. The bottom wall portion 11 and the peripheral wall portion 12 of the housing 10A are composed of mesh-like members 16a, which serve as the basic structural portion 16. Accordingly, numerous holes 14 are formed on the housing 10A in the aforementioned portions, reaching the inner surface 11a, the inner surface 12a, the outer surface 11b, and the outer surface 12b.

[0273] Additionally, an open-shaped insertion portion 13 is provided at the upper end of the peripheral wall portion 12. The insertion portion 13 spans the middle foot portion R2 and the rear foot portion R3.

[0274] Furthermore, the shell 10A has the same structure as the shell 10A included in the shoe 1A of Embodiment 1, and its material and the structure of the basic structural part 16 are also the same as those of the shell 10A included in the shoe 1A of Embodiment 1. In addition, the shell 10A, like the shell 10A included in the shoe 1A of Embodiment 1, can be manufactured by, for example, injection molding or casting molding, or by shaping using a three-dimensional lamination molding device. In particular, it can be suitably manufactured by shaping using a three-dimensional lamination molding device.

[0275] like Figure 40 As shown, an internal space SP is formed on the housing 10A. The internal space SP is defined by the inner surface 11a of the bottom wall portion 11 and the inner surface 12a of the peripheral wall portion 12, and communicates with the insertion portion 13. The internal space SP spans the forefoot portion R1, the midfoot portion R2, and the rearfoot portion R3. The internal space SP includes a space for accommodating the sole body 20 and the upper body 30, and a space for the wearer's foot to be inserted, namely the insertion space SP3.

[0276] like Figures 38 to 40 As shown, the sole body 20 supports the wearer's foot and includes a flat component capable of elastic deformation (see reference). Figure 41 The sole body 20 is housed within the internal space SP of the housing 10A.

[0277] The sole body 20 has a pair of main surfaces, namely an upper surface 21 and a lower surface 22, and a side surface 23 connecting them. The lower surface 22 of the sole body 20 faces the inner surface 11a of the bottom wall portion 11 of the housing 10A, and the side surface 23 of the sole body 20 faces the lower end portion of the inner surface 12a of the peripheral wall portion 12 of the housing 10A. Thus, the sole body 20 covers the lower end portion of the inner surface 11a of the bottom wall portion 11 of the housing 10A and the inner surface 12a of the peripheral wall portion 12 of the housing 10A.

[0278] Furthermore, the sole body 20 has the same structure as the sole body 20 included in shoe 1A of embodiment 1, and its material and other properties are also the same as those of the sole body 20 included in shoe 1A of embodiment 1.

[0279] The upper body 30 holds the wearer's foot in place by forming a portion of the shoe 1D that contacts the wearer's foot, and includes a bag-shaped component that can be flexibly deformed. The upper body 30 is housed within the internal space SP of the housing 10A. The upper body 30 includes a bottom 31 and a wall portion 32 that extends continuously upward from the periphery of the bottom 31.

[0280] The bottom 31 has a pair of main surfaces, namely an inner surface 31a and an outer surface 31b, and the wall portion 32 has a pair of main surfaces, namely an inner surface 32a and an outer surface 32b. The outer surface 31b of the bottom 31 of the upper body 30 faces the upper surface 21 of the sole body 20, and the outer surface 32b of the wall portion 32 of the upper body 30 faces the portion of the inner surface 12a of the peripheral wall portion 12 of the housing 10A, excluding the lower end side. Thus, the bottom 31 covers the upper surface 21 of the sole body 20, and the wall portion 32 covers the portion of the inner surface 12a of the peripheral wall portion 12 of the housing 10A, excluding the lower end side.

[0281] Furthermore, the upper body 30 has the same structure as the upper body 30 included in the shoe 1A of Embodiment 1, and its material and other properties are also the same as those of the upper body 30 included in the shoe 1A of Embodiment 1.

[0282] like Figure 40 As shown, the internal space SP of the housing 10A is divided into a lower side space SP1 and an upper side space SP2. The lower side space SP1 is located on the lower part of the shoe 1D in the vertical direction, and the upper side space SP2 is located on the upper part of the shoe 1D in the vertical direction.

[0283] The lower side space SP1 is a space defined by the bottom wall portion 11 and the peripheral wall portion 12 (i.e., the first portion) adjacent to the bottom wall portion 11, in which the entire sole body 20 is disposed.

[0284] The upper side space SP2 is a space defined by the peripheral wall portion 12 (i.e., the second portion) located above the first portion, in which the entire upper body 30 is disposed.

[0285] As described above, the sole body 20 is housed in the internal space SP such that it covers the inner surface 11a of the bottom wall portion 11 of the housing 10A and the lower end portion of the inner surface 12a of the peripheral wall portion 12 of the housing 10A. Furthermore, the upper body 30 is housed in the internal space SP such that it covers the upper surface 21 of the sole body 20 and the portion of the inner surface 12a of the peripheral wall portion 12 of the housing 10A except for the lower end portion. Therefore, an insertion space SP3 defined by the upper body 30 is formed in the internal space SP of the housing 10A.

[0286] As described above, the insertion space SP3 is a space for the wearer's foot to insert during wearing. More specifically, the insertion space SP3 is defined by the inner surface 31a of the bottom 31 of the upper body 30 and the inner surface 32a of the wall portion 32. Furthermore, the insertion space SP3 is included in the upper side space SP2 of the internal space SP.

[0287] Here, in the shoe 1D of this embodiment, the upper body 30 has a shape that completely covers the portion of the foot that is further to the end than the ankle of the wearer's foot, and the shell 10A that forms the upper side space SP2 completely covers the portion of the wearer's foot except for the part corresponding to the shoe opening 33 into which the wearer's foot is inserted.

[0288] Therefore, when the wearer is wearing the shoe 1D, the wearer's foot comes into contact with the inner surface 31a of the bottom 31 and the inner surface 32a of the wall portion 32 of the shoe upper body 30, which is capable of flexible deformation. Thus, the shell 10A does not directly contact the wearer's foot, ensuring comfortable wearing.

[0289] However, the upper body 30 does not necessarily need to be in full contact with the wearer's foot. Within the range that does not impair wearing comfort, cut-out portions in the shape of cuts or openings may also be provided on the upper body 30.

[0290] In the shoe 1D of this embodiment, as described above, the outermost shell of the shoe 1D is formed by the shell 10A. In particular, the lower surface 22 of the sole body 20 is covered by the bottom wall portion 11 of the shell 10A, and the outermost surface located on the lower side in the vertical direction of the shoe 1D is defined by the bottom wall portion 11 of the shell 10A. Thus, in the shoe 1D, its contact surface is formed by the outer surface 11b of the bottom wall portion 11 of the shell 10A.

[0291] Therefore, due to the configuration described above, unlike previous shoes, the contact surface is not formed by the sole body 20. This allows for a wider range of material choices for the sole body 20, enabling optimal material selection for the sole body 20 based on typical requirements for sole functionality, such as improved wearing comfort or ensured cushioning. Furthermore, performance requirements for contact surface, such as abrasion resistance or grip, can be ensured through the selection of the material for the shell 10A or other shapes. Therefore, the number of parts does not increase compared to previous designs.

[0292] Therefore, by manufacturing the shoe 1D of this embodiment, it is possible to produce a shoe that increases the freedom of material selection for the sole body while suppressing the increase in the number of parts.

[0293] Furthermore, in the shoe 1D of this embodiment, as described above, the outermost shell of the shoe 1D is composed of a shell 10A, which includes a bottom wall portion 11 defining the contact surface and a peripheral wall portion 12 erected from the periphery of the bottom wall portion 11 and including a portion covering the instep of the wearer's foot. With this configuration, compared to previous shoes where the outermost shell was composed of a sole and an upper (i.e., shoes excluding components such as the shell 10A of the shoe 1D of this embodiment), it also has the advantage of higher performance.

[0294] That is, in the previous shoes, the upper, which typically included the part covering the instep of the wearer's foot, was made only of woven or knitted fabric, non-woven fabric, etc. In addition, since the upper was bonded to the sole by adhesive or the like, the transmission time from the load applied to the upper covering the instep when kicking to the sole via the sidewalls of the upper was easily delayed. In particular, the shoe's ability to follow the foot was worse when walking.

[0295] However, in the shoe 1D of this embodiment, since the peripheral wall portion 12 of the shell 10A, which includes the portion covering the instep of the wearer's foot, is made of a resin or rubber component, similar to the case in Embodiment 1, and is made of a material that is harder than woven or knitted fabrics, non-woven fabrics, etc., and since the peripheral wall portion 12, which includes the portion covering the instep, and the sole wall portion 11, which includes the portion containing the defined contact surface, are integrally formed by the shell 10A, which includes a single component, the load transfer during kicking becomes faster, and in particular, the shoe's tracking of the foot becomes excellent during walking. Furthermore, in Figure 40 The direction of load transfer based on the housing 10A is schematically indicated by black arrows. Figure 40 The direction of the load applied to the bottom wall portion 11 of the housing 10A is schematically indicated by a hollow arrow.

[0296] Therefore, by manufacturing the shoe 1D of this embodiment, a shoe can be made that not only increases the freedom of material selection for the sole body, but also suppresses the increase in the number of parts, and provides excellent foot tracking.

[0297] Figure 41 This is an exploded perspective view illustrating the assembly structure of the shoe in this embodiment. Next, refer to... Figure 41 This will explain the assembly structure and assembly method of the shoe 1D in this embodiment.

[0298] like Figure 41 As shown, the shoe 1D of this embodiment is manufactured by assembling the pre-made shell 10A, sole body 20, and upper body 30 together. The shell 10A, sole body 20, and upper body 30 can be manufactured by any method.

[0299] Specifically, firstly, the sole body 20 is inserted into the internal space SP of the housing 10A. Here, the sole body 20 is elastically deformable, so it can be inserted into the internal space SP of the housing 10A via the opening-shaped insertion portion 13 provided at the upper end of the housing 10A. The inserted sole body 20 is configured to run along the inner surface 11a of the bottom wall portion 11 of the housing 10A.

[0300] Next, the sole body 20 is fixed relative to the housing 10A. This fixing can be achieved, for example, by sewing or gluing, welding, clamping, or by engaging with each other using engaging portions provided on the sole body 20 and the housing 10A. However, if the sole body 20 is not easily movable inside the housing 10A, this fixing may not be necessary.

[0301] Next, the upper body 30 is inserted into the internal space SP of the housing 10A. Here, the upper body 30 is flexibly deformable, allowing it to be inserted into the internal space SP of the housing 10A via an opening-shaped insertion portion 13 located at the upper end of the housing 10A. The inserted upper body 30 is positioned along the upper surface 21 of the sole body 20 and the inner surface 12a of the peripheral wall portion 12 of the housing 10A. Furthermore, near the shoe opening 33, the upper body 30 is positioned so that it protrudes from the insertion portion 13 of the housing 10A to the outside.

[0302] Next, the upper body 30 is fixed relative to the housing 10A and the sole body 20. This fixing can be achieved, for example, by sewing, gluing, welding, clamping, or by engaging with each other using engaging parts provided on the upper body 30 and the housing 10A, or by engaging with each other using engaging parts provided on the upper body 30 and the sole body 20. However, if the upper body 30 is not easily movable inside the housing 10A, this fixing may not be necessary.

[0303] By completing the above procedures, the shell 10A, the sole body 20, and the upper body 30 are assembled together, thereby completing the manufacture of the shoe 1D according to this embodiment. Furthermore, the assembly method described is merely illustrative, and other assembly methods may also be used.

[0304] As described above, the shoe 1D of this embodiment is easier to manufacture than before because it can be manufactured through a very simple operation of assembling the pre-made shell 10A, sole body 20, and upper body 30 together. Furthermore, no complicated positioning operations are required when assembling the shell 10A, sole body 20, and upper body 30 together.

[0305] Therefore, by manufacturing the shoe 1D of this embodiment, a shoe can be made that not only increases the freedom of material selection for the sole body, but also suppresses the increase in the number of parts, and is easier to manufacture than before.

[0306] (Implementation Method 19)

[0307] Figure 42 This is a perspective view of the shoe according to embodiment 19. Hereinafter, refer to the... Figure 42 To illustrate this embodiment, we will describe shoe 1E.

[0308] like Figure 42 As shown, the shoe 1E of this embodiment includes a shell 10P with a structure different from that of the shell 10A included in the shoe 1D of embodiment 18, but has the same structure as the shoe 1D of embodiment 18 in other aspects.

[0309] Specifically, in the housing 10P, the opening-shaped insertion portion 13 provided at the upper end of the peripheral wall portion 12 is formed to span the forefoot portion R1, the middle foot portion R2, and the rear foot portion R3. More specifically, the peripheral wall portion 12 is configured to primarily cover the portion corresponding to the toes of the wearer's foot, the portion corresponding to the inner and outer sides of the instep of the wearer's foot, and the portion corresponding to the ball of the foot in the peripheral surface of the heel of the wearer's foot. The portion corresponding to the central portion of the instep in the foot-width direction and the portion corresponding to the ankle side in the peripheral surface of the heel of the wearer's foot are generally not covered by the peripheral wall portion 12.

[0310] Therefore, the portion of the wall 32 of the upper body 30 corresponding to the central portion in the foot width direction of the instep of the wearer's foot and the portion corresponding to the ankle side in the circumference of the heel of the wearer's foot are exposed to the outside.

[0311] Here, in the shoe 1E of this embodiment, the internal space SP of the shell 10P is also divided into a lower side space SP1 and an upper side space SP2. The lower side space SP1 is defined by the first portion of the bottom wall portion 11 and the peripheral wall portion 12, and the upper side space SP2 is defined by the second portion of the peripheral wall portion 12. Furthermore, by housing the sole body 20 in the lower side space SP1, the contact surface of the shoe 1E is formed by the outer surface 11b of the bottom wall portion 11 of the shell 10P.

[0312] Therefore, in the case of shoe 1E in this embodiment, similarly to shoe 1D in embodiment 18, the freedom of material selection for the sole body can be increased, while the increase in the number of parts is suppressed. Thus, a shoe that is easier to manufacture than before can be produced.

[0313] (Implementation Method 20)

[0314] Figure 43 This is a perspective view of the shoe according to embodiment 20. Hereinafter, refer to the... Figure 43 Let's describe the shoe 1F of this embodiment.

[0315] like Figure 43 As shown, the shoe 1F of this embodiment includes a shell 10R with a structure different from that of the shell 10A included in the shoe 1D of embodiment 18, and does not include the upper body 30 included in the shoe 1D of embodiment 18. However, it has the same structure as the shoe 1D of embodiment 18 in other aspects. Here, the shoe 1F of this embodiment is a so-called sandal.

[0316] Specifically, in the housing 10R, the opening-shaped insertion portion 13 provided at the upper end of the peripheral wall portion 12 is formed to span the middle foot portion R2 and the rear foot portion R3. More specifically, the peripheral wall portion 12 is configured to primarily cover the portion corresponding to the toes of the wearer's foot, the portion corresponding to the instep of the wearer's foot, and the portion corresponding to the ball of the foot on the circumference of the heel of the wearer's foot, while the portion corresponding to the ankle on the circumference of the heel of the wearer's foot is largely not covered by the peripheral wall portion 12.

[0317] Here, in the shoe 1F of this embodiment, the internal space SP of the shell 10R is also divided into a lower side space SP1 and an upper side space SP2. The lower side space SP1 is defined by the first portion of the bottom wall portion 11 and the peripheral wall portion 12, and the upper side space SP2 is defined by the second portion of the peripheral wall portion 12. Moreover, by housing the sole body 20 in the lower side space SP1, the contact surface of the shoe 1F is formed by the outer surface 11b of the bottom wall portion 11 of the shell 10R.

[0318] Therefore, in the case of shoe 1F in this embodiment, similarly to shoe 1D in embodiment 18, the freedom of material selection for the sole body can be increased, while the increase in the number of parts is suppressed. Thus, a shoe that is easier to manufacture than before can be produced.

[0319] (Summary of the disclosed content in the implementation methods, etc.)

[0320] When summarizing the characteristic structures disclosed in Embodiments 1 to 20 and their variations, it is as follows.

[0321] A shoe according to an embodiment of the present disclosure includes a shell and a sole body. The shell includes a flexible member forming an internal space for an inserter's foot. The sole body is received within the shell and supports the ball of the wearer's foot. The shell includes a bottom wall portion and a peripheral wall portion erected from the periphery of the bottom wall portion. In the shoe according to an embodiment of the present disclosure, a lower side space for the sole body to be disposed in the internal space is formed by the bottom wall portion and the peripheral wall portion adjacent to the bottom wall portion, and at least a portion of an upper side space for the inserter's foot in the internal space is formed by the peripheral wall portion located above the portion adjacent to the bottom wall portion. In the shoe according to an embodiment of the present disclosure, the outer surface of the bottom wall portion forms the contact surface by covering the lower surface of the sole body.

[0322] The shoe according to one embodiment of the present disclosure may also include an upper body, which is housed in the housing and at least covers the instep of the wearer's foot.

[0323] In a shoe according to an embodiment of the present disclosure, the upper body may have a bag-like shape with an opening at a portion corresponding to the shoe opening into which the wearer's foot is inserted. In this case, the upper body may be disposed along the inner surface of the housing in the upper side space and the lower side space, thereby housing the sole body within the upper body.

[0324] In a shoe according to an embodiment of the present disclosure, the upper body may have a bag-like shape with an opening at a portion corresponding to the shoe opening into which the wearer's foot is inserted. In this case, the upper body may be disposed along the inner surface of the shell forming the portion of the upper side space and the upper surface of the sole body, whereby the sole body is held between the bottom wall portion and the upper body.

[0325] In a shoe according to an embodiment of the present disclosure, it is preferable that the shell forming the portion of the upper side space at least covers the inner foot side of the instep of the wearer's foot and the outer foot side of the instep of the wearer's foot.

[0326] In a shoe according to an embodiment of the present disclosure, it is preferable that the shell forming the portion of the upper side space at least covers the periphery of the heel of the wearer's foot.

[0327] In a shoe according to an embodiment of the present disclosure, the portion of the shell forming the upper side space may completely cover the portion of the wearer's foot excluding the ball of the foot, except for the portion corresponding to the shoe opening into which the wearer's foot is inserted.

[0328] In a shoe according to an embodiment of the present disclosure, the shell may have at least a basic structural portion, which is composed of a bent mesh-like member comprising a plurality of linear elements connected in a crisscrossing manner.

[0329] In a shoe according to an embodiment of the present disclosure, the shell may have at least a basic structural portion composed of a bent plate-like member. In this case, the basic structural portion may have a plurality of holes.

[0330] In a shoe according to an embodiment of the present disclosure, the shell may have at least a basic structural portion composed of a bent woven structure-like component.

[0331] In a shoe according to an embodiment of the present disclosure, the shell may further include a design portion to cover the basic structural portion.

[0332] In a shoe according to an embodiment of the present disclosure, the shell forming the portion of the upper side space may at least cover the instep of the wearer's foot, and in this case, the shell covering the portion of the instep of the wearer's foot may have a multi-layered structure.

[0333] In a shoe according to an embodiment of the present disclosure, the shell forming the portion of the upper side space may at least cover the circumferential surface of the wearer's heel, and in this case, the shell covering the portion of the wearer's heel may have a multi-layered structure.

[0334] In a shoe according to an embodiment of the present disclosure, the shell forming the upper side space may at least cover the portion adjacent to the shoe opening into which the wearer's foot is inserted, and in this case, the shell of the portion adjacent to the shoe opening into which the wearer's foot is inserted may have a multi-layer structure.

[0335] In a shoe according to an embodiment of the present disclosure, the bottom wall portion may have a multi-layer structure.

[0336] In a shoe according to an embodiment of the present disclosure, the thickness of the bottom wall portion may be greater than the thickness of the peripheral wall portion.

[0337] In a shoe according to one embodiment of the present disclosure, the shell may be composed of a single component.

[0338] In a shoe according to an embodiment of the present disclosure, the shell may be constructed by combining multiple components.

[0339] (Other embodiments, etc.)

[0340] Regarding the specific shape or structure, size, quantity, position, etc. of each part shown in Embodiments 1 to 20 and their variations, appropriate changes can be made as long as they do not depart from the spirit of the present invention.

[0341] Furthermore, the characteristic structures shown in Embodiments 1 to 20 and their variations can be combined with each other as long as they do not depart from the spirit of the present invention.

[0342] Embodiments of the present invention have been described, but it should be considered that the embodiments disclosed herein are illustrative in all respects and not restrictive. The scope of the invention is defined by the claims and is intended to include all modifications within the meaning and scope equivalent to the claims.

Claims

1. A shoe, characterized in that, include: The flexible shell forms an internal space for the wearer's feet to insert; The upper body is housed within the shell and at least covers the instep of the wearer's foot; and The sole body is housed within the shell and supports the wearer's foot. The housing includes a bottom wall portion and a peripheral wall portion that is erected from the periphery of the bottom wall portion. The lower side space for the sole body to be disposed within the internal space is formed by the bottom wall portion and the peripheral wall portion adjacent to the bottom wall portion, and at least a portion of the upper side space for the wearer's foot to be inserted within the internal space is formed by the peripheral wall portion located above the portion adjacent to the bottom wall portion. The lower surface of the sole body is covered by the bottom wall portion, while the outer surface of the bottom wall portion forms the contact surface. The inner surface of the bottom of the upper body covers the lower surface of the sole body, or the upper surface of the sole body covers the outer surface of the bottom of the upper body.

2. The shoe according to claim 1, characterized in that, The upper body has a bag-like shape with an opening in the part corresponding to the shoe opening into which the wearer's foot is inserted. The upper body is disposed along the inner surface of the shell in the upper side space and the lower side space, thereby housing the sole body within the upper body.

3. The shoe according to claim 1, characterized in that, The upper body has a bag-like shape with an opening in the part corresponding to the shoe opening into which the wearer's foot is inserted. The upper body is disposed along the inner surface of the shell forming the portion of the upper side space and the upper surface of the sole body, whereby the sole body is held between the bottom wall portion and the upper body.

4. The shoe according to any one of claims 1 to 3, characterized in that, The portion of the shell forming the upper side space completely covers the area of ​​the wearer's foot, excluding the part corresponding to the shoe opening into which the wearer's foot is inserted.

5. The shoe according to any one of claims 1 to 3, characterized in that, The housing has at least a basic structural portion, which is composed of a bent mesh-like member comprising a plurality of linear elements connected in a crisscrossing manner.

6. The shoe according to any one of claims 1 to 3, characterized in that, The bottom wall has a multi-layered structure.

7. The shoe according to any one of claims 1 to 3, characterized in that, The thickness of the bottom wall portion is greater than the thickness of the peripheral wall portion.

8. The shoe according to any one of claims 1 to 3, characterized in that, The shell is composed of a single component.

9. The shoe according to any one of claims 1 to 3, characterized in that, The shell is constructed by combining multiple components.

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