WO2024062526A1

WO2024062526A1 - Upper and shoe

Info

Publication number: WO2024062526A1
Application number: PCT/JP2022/034988
Authority: WO
Inventors: 千早鈴木
Original assignee: 株式会社アシックス
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2024-03-28

Abstract

An upper (2) is the upper (2) of a shoe (1) and includes a knitted fabric substrate (20). The substrate (20) includes a surface layer directed towards the outside of the upper (2). The surface layer includes: a first region (21) formed with a plurality of threads; and a second region (22) formed with a plurality of threads and having a thread arrangement density that is higher than the first region (21). The threads of the first region (21) and the threads of the second region (22) are the same material. The second region (22) is provided with a plurality of colors.

Description

Upper and shoes

The present invention relates to an upper and a shoe including the upper.

As a conventional upper, a knitted upper is known (for example, see Patent Document 1). The knitted upper includes a fabric-like base material.

One method of applying color to the base material of a knitted upper is piece dyeing, in which the base material is created and then dyed. When applying two or more colors to the base material by piece dyeing, it is necessary to use two or more types of yarn made of different materials in combination. In other words, after yarns made of different materials are knitted to create the base material, each of the yarns made of different materials must be dyed with a different dye.

Japanese Patent Application Publication No. 2016-182350

Threads made of different materials do not have the same physical properties such as strength, colorability, and elasticity, so if you apply two or more colors to the base material by using threads made of different materials together, as in the past, the physical properties will be inferior. There is a problem with the need to use thread.

The present invention has been made in view of the above, and an object of the present invention is to obtain an upper in which it is possible to apply two or more colors to at least a part of the base material without using yarn with poor physical properties. With the goal.

In order to solve the above-mentioned problems and achieve the objects, an upper according to the present invention is an upper of a shoe and includes a base material that is a knitted fabric. The base material includes a surface layer facing the exterior of the upper. The surface layer includes a first region formed by a plurality of threads, and a second region formed by a plurality of threads and having a higher thread arrangement density than the first region. The yarn in the first region and the yarn in the second region are the same material. A plurality of colors are applied to the second area.

The upper according to the present invention has the effect that two or more colors can be applied to at least a part of the base material without using threads with poor physical properties.

FIG. 1 is a developed view showing an upper of a shoe according to Embodiment 1 of the present invention. FIG. 2 is a perspective view showing a shoe according to Embodiment 1 of the present invention. FIG. 3 is a cross-sectional view taken along line III-III shown in FIG. FIG. 4 is a cross-sectional view taken along the line IV-IV shown in FIG. FIG. 5 is a sectional view taken along line VV shown in FIG. 2. FIG. 6 is a cross-sectional view taken along line VI-VI shown in FIG. FIG. 7 is a plan view when the surface layer is viewed from the arrow X1 shown in FIG. FIG. 8 is a plan view when the surface layer is viewed from the arrow X2 shown in FIG. FIG. 9 is a plan view of the surface layer viewed from arrow X3 shown in FIG. FIG. 10 is a plan view of the surface layer as viewed from the arrow X4 shown in FIG. FIG. 11 is a cross-sectional view showing an upper of a shoe according to a first modification of the first embodiment of the present invention, and corresponds to the cross-sectional view taken along line IV-IV shown in FIG. FIG. 12 is a sectional view showing the upper of the shoe according to the second modification of the first embodiment of the present invention, and corresponds to the sectional view taken along the line VI-VI shown in FIG. FIG. 13 is a developed view showing an upper of a shoe according to Embodiment 2 of the present invention. FIG. 14 is a developed view showing an upper of a shoe according to Embodiment 3 of the present invention. FIG. 15 is a cross-sectional view taken along the line XV-XV shown in FIG. 14. FIG. 16 is a developed view showing an upper of a shoe according to Embodiment 4 of the present invention.

Below, embodiments of an upper and shoes according to the present invention will be described in detail based on the drawings. Note that the present invention is not limited to this embodiment. In the following description, the same parts are denoted by the same reference numerals, and redundant description will be omitted.

(Embodiment 1)
Fig. 1 is a development view showing an upper 2 of a shoe 1 according to a first embodiment of the present invention. Only the shoe 1 for the left foot is shown in each of the figures including Fig. 1. Since the shoe 1 for the left foot and the shoe 1 for the right foot have a symmetrical structure, only the shoe 1 for the left foot will be described in this embodiment, and a description of the shoe 1 for the right foot will be omitted. In the following description, the direction in which a shoe center axis C, which is a perpendicular line passing through the center of the shoe 1 when viewed from above, extends is referred to as the front-rear direction, and the direction perpendicular to the front-rear direction when viewed from above is referred to as the foot width direction.

In the following description, the direction from the heel to the toe in the shoe 1 in the front-rear direction is referred to as the front, and the direction from the toe to the heel in the shoe 1 in the front-rear direction is referred to as the rear.

In the following explanation, the midline side of the foot in the anatomical orthogonal position is referred to as the medial foot side, and the side opposite the midline side in the anatomical orthogonal position is referred to as the lateral foot side. In other words, the side closer to the midline in the anatomical orthogonal position is referred to as the medial foot side, and the side furthest from the midline in the anatomical orthogonal position is referred to as the lateral foot side.

In the following description, the up-down direction means a direction perpendicular to both the front-rear direction and the foot width direction, unless otherwise specified.

The upper 2 includes an upper forefoot portion R1 that covers the forefoot of a wearer with a standard body type, an upper midfoot portion R2 that covers the midfoot of a wearer with a standard body type, and The upper hindfoot part R3 covers the hindfoot part of the wearer's foot. In order from the front to the rear of the upper 2, an upper forefoot portion R1, an upper middle foot portion R2, and an upper rear foot portion R3 are continuous.

A line along the foot width direction passing from the front end of the upper 2 to a position corresponding to approximately 30% to 40% of the longitudinal dimension of the upper 2 is defined as the first boundary line S1, and from the front end of the upper 2 to the longitudinal direction of the upper 2. A line along the foot width direction passing through a position corresponding to approximately 75% to 85% of the dimension is defined as a second boundary line S2. The first boundary line S1 is a line that roughly follows the MP joint of a wearer with a standard body shape. The second boundary line S2 is a line that generally follows the Chopard joint of a wearer with a standard body shape. The upper forefoot portion R1 is a portion located forward of the first boundary line S1. The upper midfoot portion R2 is a portion located between the first boundary line S1 and the second boundary line S2. The upper rear foot portion R3 is a portion located behind the second boundary line S2.

FIG. 2 is a perspective view showing a shoe 1 according to the first embodiment of the present invention. The shoe 1 is preferably a running shoe, but may also be a shoe for other sports, a walking shoe, a mountain climbing shoe, etc. The shoe 1 includes an upper 2 and a sole 3.

The upper 2 is located above the sole 3. The upper 2 includes a base material 20, a shoe tongue 23, and a shoelace 24.

The base material 20 covers the instep of the wearer's foot. An opening 20a and a throat portion 20b are formed on the upper part of the base material 20. The opening 20a is an opening for inserting the wearer's foot inside the base material 20. The throat portion 20b is an opening that communicates with the opening 20a and extends forward from the opening 20a. A plurality of lace-through portions 20c that are spaced apart from each other in the front-rear direction are provided on both side edges of the throat portion 20b in the foot width direction. In FIG. 2, only the lace-through portion 20c provided on the side edge on the outer foot side of the throat portion 20b is illustrated. The lace-through portion 20c may be any portion that can pass the shoelace 24 through. The lace-through portion 20c is, for example, a through hole that penetrates the base material 20 in the thickness direction of the base material 20.

The tongue 23 is a member for protecting the top of the wearer's foot. The shoe tongue 23 covers the throat portion 20b inside the base material 20. The tongue 23 is fixed to the base material 20 by suturing, welding, adhesion, or a combination thereof. The base material 20 and the shoe tongue 23 are preferably knitted fabrics in which yarn is rolled into a chain shape and the chain-shaped portions are hooked together to form a cloth, but they may also be fabrics, braids, or the like. In particular, in the shoes 1 where breathability and lightness are required, the base material 20 and the tongue 23 are preferably double raschel warp knitted fabrics woven with polyester threads.

The shoelace 24 is a string that is passed alternately through a string passing portion 20c provided on one side edge in the foot width direction of the throat portion 20b and a string passing portion 20c provided on the other side edge in the foot width direction. It is a shaped member. The shoelace 24 is removably attached to the base material 20.

In this embodiment, the upper 2 including the shoe tongue 23 and the shoelace 24 will be explained as an example, but the upper 2 has a monosock structure in which the portion corresponding to the shoe tongue 23 is integrated with the ankle portion of the base material 20. It's okay. Further, the means for bringing the base material 20 into close contact with the foot may be, for example, a hook-and-loop fastener instead of the shoelaces 24. When the means for bringing the base material 20 into close contact with the foot is a hook-and-loop fastener, the string passing portion 20c is not formed on the base material 20.

The sole 3 is located below the upper 2. The sole 3 covers the sole of the wearer's foot. The sole 3 is fixed to the base material 20 by suturing, welding, adhesion, or a combination thereof. The sole 3 includes an outsole 30 and a midsole 31. The lower surface of the outsole 30 becomes a contact surface 30a installed on the ground. The midsole 31 is located on the upper surface of the outsole 30 and has cushioning properties. Note that the outsole 30 may be integrated with the midsole 31. The outsole 30 integrated with the midsole 31 is also referred to as a "unisole."

Although not shown, the sole 3 includes an insole that covers the lower opening of the base material 20. The midsole is fixed to the upper surface of the midsole 31 by adhesion or welding. The midsole is secured to the lower edge of the base material 20 by sutures. Although not shown, the shoe 1 may include an insole. When the shoe 1 includes an insole, the insole is installed inside the upper 2 and on the sole 3. Note that the sole 3 may have a structure in which the insole is omitted.

Next, the base material 20 will be explained in more detail.

As shown in FIG. 1, the base material 20 includes an upper forefoot portion R1, an upper middle foot portion R2, and an upper rear foot portion R3. As shown in FIG. 2, the base material 20 is disposed over the entire area of the upper 2 other than the tongue 23 and the shoelaces 24. Although the base material 20 is a single member in this embodiment, it may be divided into a plurality of parts. When dividing the base material 20 into a plurality of parts, for example, the base material 20 is divided into a part corresponding to the upper forefoot part R1, a part corresponding to the upper middle foot part R2, and a part corresponding to the upper rear foot part R3. It may be divided into The divided parts are connected by suturing, welding, adhesion, or a combination thereof.

FIG. 3 is a cross-sectional view taken along line III-III shown in FIG. 2. FIG. 4 is a cross-sectional view taken along the line IV-IV shown in FIG. FIG. 5 is a sectional view taken along line VV shown in FIG. 2. FIG. 6 is a cross-sectional view taken along line VI-VI shown in FIG. As shown in FIGS. 3 to 6, the base material 20 is a cloth-like member including multiple layers. The base material 20 includes a surface layer 20d facing the outside of the upper 2, a back layer 20e facing the inside of the upper 2, and an intermediate layer 20f disposed between the surface layer 20d and the back layer 20e. There is. Although the base material 20 has three layers in this embodiment, it may have two or more layers. The back layer 20e is disposed in the thickness direction of the base material 20 with a gap from the surface layer 20d. The intermediate layer 20f connects the surface layer 20d and the back layer 20e. The intermediate layer 20f is alternately and repeatedly connected to the surface layer 20d and the back layer 20e.

FIG. 7 is a plan view of the surface layer 20d viewed from the arrow X1 shown in FIG. 3. FIG. 8 is a plan view of the surface layer 20d viewed from the arrow X2 shown in FIG. FIG. 9 is a plan view of the surface layer 20d viewed from the arrow X3 shown in FIG. FIG. 10 is a plan view of the surface layer 20d viewed from the arrow X4 shown in FIG. As shown in FIGS. 7 to 10, the base material 20 is a knitted fabric in which a plurality of

yarns

20g and 20h are woven together. In this embodiment, the base material 20 is a knitted fabric formed by warp knitting.

The surface layer 20d includes a first region 21 shown in FIGS. 7 and 8 and a second region 22 shown in FIGS. 9 and 10. As shown in FIGS. 7 and 8, the first region 21 is a region formed by a plurality of

threads

20g and 20h. The first region 21 is a region in which only a plurality of stitches 20i are formed side by side. As shown in FIGS. 3 and 4, the thread 20h is disposed only on the back layer 20e in the first region 21, and extends along the back layer 20e. As shown in FIGS. 9 and 10, the second region 22 is formed by a plurality of

threads

20g, 20h, and has a higher arrangement density of the

threads

20g, 20h than the first region 21. The second region 22 is a region in which a plurality of stitches 20i are formed side by side and a yarn 20h formed independently of the stitches 20i is arranged. In FIGS. 9 and 10, in order to clarify the position of the yarn 20h, the portion of the yarn 20g forming the stitch 20i that overlaps with the yarn 20h in plan view is deleted, but in reality, the

yarn

20h and 20 g of yarn also exists in the overlapping portion in plan view. As shown in FIGS. 5 and 6, a portion of the yarn 20h rises from the back layer 20e to the surface layer 20d in the second region 22 and is exposed on the surface of the upper 2. In addition, in each figure in which the thread 20h is shown, the thread 20h is drawn with a broken line in order to clarify the position of the thread 20h.

The

threads

20g, 20h in the first region 21 and the

threads

20g, 20h in the second region 22 are threads made of a single fiber, threads made of a plurality of fibers bundled together, twisted threads, or the like. The

threads

20g, 20h in the first region 21 and the

threads

20g, 20h in the second region 22 are made of the same material. The

threads

20g, 20h in the first region 21 and the

threads

20g, 20h in the second region 22 are, for example, formed only from polyester fibers that do not contain sulfonic acid groups. The polyester fibers that do not contain sulfonic acid groups are preferably recycled polyester fibers, raw colored polyester fibers, or recycled and raw colored polyester fibers.

In FIGS. 1, 2, etc., dot hatching is applied only to the second region 22 in order to distinguish the first region 21 and the second region 22. As shown in FIG. 1, the first region 21 and the second region 22 are provided in the upper forefoot region R1, the upper midfoot region R2, and the upper rearfoot region R3 of the base material 20, respectively. . The first region 21 is provided so as to surround a portion of the periphery of the shoe opening 20a and the entire periphery of the throat portion 20b. The first region 21 is adjacent to the opening 20a and the throat portion 20b. The second region 22 is provided so as to surround the remainder of the periphery of the shoe opening 20a and the entire periphery of the first region 21. The second region 22 is adjacent to the remainder of the collar 20a and the first region 21. Note that the positions of the first region 21 and the second region 22 are not limited to the illustrated example, and may be changed as appropriate.

A plurality of holes 21a are formed in the first region 21. Although the shape of the hole 21a in plan view is not particularly limited, it is rhombic in this embodiment. The holes 21a are arranged in the front part of the throat part 20b, the inner leg side part of the throat part 20b, and the outer leg side part of the throat part 20b in the base material 20. As shown in FIG. 4, the hole 21a is a through hole that penetrates the surface layer 20d, the back layer 20e, and the intermediate layer 20f of the first region 21 in the thickness direction of the base material 20. The position of the opening 21b of the hole 21a in the first region 21 that opens to the surface layer 20d is the same as the position of the opening 21c of the hole 21a of the first region 21 that opens to the back layer 20e. In other words, the positions of the openings 21b of the holes 21a in the first region 21 that are open to the surface layer 20d and the positions of the openings 21c of the holes 21a of the first region 21 that are open to the back layer 20e are different from each other in the base material. 20 when viewed along the thickness direction.

As shown in FIG. 2, a plurality of holes 22a are also formed in the second region 22. Although the shape of the hole 22a in plan view is not particularly limited, it is rhombic in this embodiment. The holes 22a are formed in stripes 22d. As shown in FIG. 6, the hole 22a is a through hole that penetrates the surface layer 20d, back layer 20e, and intermediate layer 20f of the second region 22 in the thickness direction of the base material 20. The position of the opening 22b of the hole 22a in the second region 22 that opens to the surface layer 20d is the same as the position of the opening 22c of the hole 22a of the second region 22 that opens to the back layer 20e. In other words, the positions of the openings 22b of the holes 22a in the second region 22 that are open to the surface layer 20d and the positions of the openings 22c of the holes 22a of the second region 22 that are open to the back layer 20e are different from each other in the base material. 20 when viewed along the thickness direction.

The color of the first region 21 shown in FIG. 1 is the same throughout the first region 21. The color of the first region 21 and the color of the second region 22 are different from each other. The second region 22 is painted with a plurality of colors. The second region 22 includes a stripe 22d, an edge 22e of the stripe 22d, and a reference portion 22f other than the stripe 22d and edge 22e. The color of the stripe 22d, the color of the edge 22e, and the color of the reference portion 22f are different from each other. The upper 2 has four colors in this embodiment, but preferably three or more colors. As used herein, the term "color" includes chromatic colors and achromatic colors, which are colors ranging from white to black through gray. In this specification, "difference in color" includes the difference between a chromatic color and an achromatic color, a difference in hue for a chromatic color, a difference in saturation for a chromatic color, and a difference in lightness for an achromatic color. The evaluation of color differences may be performed by appropriately selecting a color system from known color systems such as the Munsell color system, the XYZ color system, and the Lab color space.

The light and shade of the color of the stripe 22d may change stepwise or may be the same over the entire area of the stripe 22d. The color of the edge 22e may gradually change to match the color of the reference portion 22f around the edge 22e. The light and shade of the color of the reference portion 22f may change stepwise, or may be the same over the entire area of the reference portion 22f. In the former case, the color shading of the reference portion 22f may change stepwise along the foot width direction of the upper 2. For example, the color of the reference portion 22f may gradually become lighter from the end of the upper 2 in the foot width direction to the center of the upper 2 in the foot width direction.

As shown in FIGS. 9 and 10, a yarn 20h different from the yarn 20g forming the stitch 20i is colored and irregularly arranged on the surface layer 20d of the second region 22, so that the second region 22 A plurality of colors can be applied to the surface layer 20d. That is, as shown in FIGS. 3 to 6, the threads 20h are arranged only on the back layer 20e in the first region 21, but are arranged not only on the back layer 20e but also on the surface layer 20d in the second region 22. Accordingly, it is possible to apply a plurality of colors to the surface layer 20d of the second region 22. In this specification, "arranging" the yarn 20h on the surface layer 20d or the back layer 20e means that the yarn 20h is knitted into the surface layer 20d or the back layer 20e, or the yarn 20h is overlapped without being knitted into the surface layer 20d or the back layer 20e. The meaning includes things such as being given.

The upper 2 can be manufactured by using a warp knitting machine to form the first region 21 and the second region 22 in one process.

Next, the effects of the upper 2 and the shoe 1 according to the present embodiment will be explained.

In this embodiment, as shown in FIG. 3, the upper 2 includes a base material 20 that is a knitted fabric, and the base material 20 includes a surface layer 20d facing the outside of the upper 2. As shown in FIGS. 3 to 6, the surface layer 20d has a first region 21 formed by a plurality of

threads

20g and 20h, and a first region 21 formed by a plurality of

threads

20g and 20h. It includes a second region 22 in which the

yarns

20g and 20h are arranged at a high density. The

threads

20g, 20h in the first region 21 and the

threads

20g, 20h in the second region 22 are made of the same material, and the second region 22 is coated with a plurality of colors. With these configurations, two or more colors can be applied to the second region 22 using the

threads

20g and 20h made of the same material, so threads with inferior physical properties can be used at least in some regions of the base material 20. It becomes possible to apply two or more types of colors without the need for color. Furthermore, since the first region 21 and the second region 22 can be colored differently using the

threads

20g and 20h made of the same material, it is possible to apply different colors to the first region 21 and the second region 22. It becomes possible to apply two or more colors without using thread. That is, in this embodiment, the color of the upper 2 is changed by making the color of the first region 21 and the color of the second region 22 different from each other, and applying two or more kinds of colors to the second region 22. Even if three or more types are used, there is no need to use threads with inferior physical properties.

In this embodiment, the base material 20 is a knitted fabric formed by warp knitting. Generally, when the base material is a knitted fabric formed by warp knitting, the base material must be dyed by piece dyeing. When the base material is made from threads of the same material, piece dyeing allows only one color to be applied to the base material. On the other hand, when applying two or more colors to a base material by piece dyeing, it is necessary to use two or more types of threads made of different materials. In this case, it is necessary to use yarn with inferior physical properties. In this regard, in this embodiment, the

threads

20g, 20h of the first region 21 and the

threads

20g, 20h of the second region 22 are made of the same material, and the

threads

20g, 20h of the first region 21 are made of the same material. The

yarns

20g and 20h in the second region 22 are colored as raw materials, and the yarns 20h in the second region 22 can be freely arranged independently of the stitches 20i, so that the

yarns

20g and 20h in the base material 20 It becomes possible to apply two or more colors without using threads with poor physical properties. Note that the base material 20 may be a knitted fabric formed by weft knitting.

In this embodiment, the

threads

20g, 20h in the first region 21 and the

threads

20g, 20h in the second region 22 are made of the same material, which makes it easier to recycle the substrate 20.

In this embodiment, the

yarns

20g, 20h in the first region 21 shown in FIGS. 3 and 4 and the

yarns

20g, 20h in the second region 22 shown in FIGS. 5 and 6 have sulfonic acid groups. Molded only from polyester fibers. With this configuration, the physical properties such as the strength of the base material 20 can be improved, and the physical properties of the base material 20 can be improved, compared to the case where the

threads

20g and 20h are made of nylon fiber, cationic dyeable polyester fiber (CDP), etc. Material costs can be reduced.

If the polyester fibers that do not contain sulfonic acid groups used as the

yarns

20g and 20h are recycled polyester fibers, the amount of petroleum-derived raw materials used in the base material 20 can be reduced, and the manufacturing cost of the base material 20 can be reduced. It is also possible to reduce the environmental burden. By using 20g, 20h of colored yarn as raw materials and 20g, 20h of yarn of two or more colors, two or more colors can be applied to the base material 20 without piece-dying the base material 20. can be attached to In addition, if the polyester fibers that do not contain sulfonic acid groups used as the

yarns

20g and 20h are colored polyester fibers, they are used more when dyeing the base material 20 than when piece-dying the base material 20. Since the amount of electricity and water used can be suppressed, it is possible to reduce the manufacturing cost of the base material 20 and reduce the environmental load.

In the present embodiment, as shown in FIGS. 7 and 8, the first region 21 is a region in which only a plurality of stitches 20i are formed in line, and as shown in FIGS. 22 is a region where a plurality of stitches 20i are formed side by side and a yarn 20h formed independently of the stitches 20i is arranged. With this configuration, the colored threads 20h can be freely arranged, so that the degree of freedom in arranging the colors applied to the base material 20 can be increased. Thereby, the range of expression of the design of the upper 2 can be expanded. That is, even if the

threads

20g and 20h of the second region 22 are made of the same material, the upper 2 can be colored in two or more colors.

In this embodiment, the color of the second region 22 shown in FIG. 1 changes in stages. This configuration allows for a wider range of expression in the design of the upper 2.

In this embodiment, as shown in FIG. 1, a plurality of holes 21a are formed in the first region 21. With this configuration, while reducing the weight of the upper 2, it is possible to improve elasticity, breathability, etc. of the upper 2. In particular, in this embodiment, since the hole 21a has a rhombic shape in plan view, when the wearer of the shoe 1 performs an action such as running, the upper 2 follows the expansion and contraction of the skin of the foot. It becomes easier to deform. Therefore, it is possible to reduce the impact of the upper 2 on the foot, and to suppress the occurrence of wrinkles in the upper 2.

In this embodiment, as shown in FIGS. 3 to 6, the base material 20 has a plurality of layers including a surface layer 20d facing the outside of the upper 2 and a back layer 20e facing the inside of the upper 2. Equipped with. With this configuration, the wearer's feet placed inside the upper 2 can be protected by the plurality of layers. In particular, in this embodiment, the base material 20 has three layers including the intermediate layer 20f disposed between the surface layer 20d and the back layer 20e, so that the wearer's feet can be further protected. .

Next, a modification of the first embodiment will be described.

The material of the

threads

20g, 20h in the first region 21 and the material of the

threads

20g, 20h in the second region 22 are not limited to the above-mentioned polyester fibers that do not contain sulfonic acid groups. The materials for the

yarns

20g, 20h in the first region 21 and the

yarns

20g, 20h in the second region 22 are, for example, synthetic fibers made from polyester, polyamide, polyurethane, polyolefin, artificial protein, etc., acetate, etc. Semi-synthetic fibers made from raw materials, recycled fibers made from rayon, cupra, etc., natural fibers made from cotton, linen, silk, wool, etc., and inorganic fibers made from glass, metal, carbon, etc. good.

The upper 2 and sole 3 may be molded from the same material. For example, the upper 2 and sole 3 may be made of polyester fibers that do not contain sulfonic acid groups. With this configuration, the entire shoe 1 can be recycled easily, so the amount of petroleum-derived raw materials used can be reduced, and the manufacturing cost of the shoe 1 can be reduced and the environmental load can be reduced. Further, for example, the upper 2 and sole 3 may be molded from a thermoplastic polyester elastomer. With this configuration, it is possible to provide the sole 3 with high resilience, so that the functionality of the shoe 1 can be improved, and the shoe 1 can be easily recycled.

The upper 2 and sole 3 may be made of similar materials. In this specification, "similar materials" refers to polymeric materials that have a common monomer structure. For example, the upper 2 may be made of polyester fibers that do not contain sulfonic acid groups, and the sole 3 may be made of a thermoplastic polyester elastomer. This configuration allows the use of materials suited to the required characteristics of the upper 2 and sole 3, and because the shoe 1 is made entirely of similar materials, it becomes easy to recycle the entire shoe 1.

FIG. 11 is a sectional view showing the upper 2 of the shoe 1 according to the first modification of the first embodiment of the present invention, and corresponds to the sectional view taken along the line IV-IV shown in FIG. 2. As shown in FIG. 11, the position of the opening 21b of the hole 21a in the first region 21 that opens to the surface layer 20d, and the position of the opening 21c of the hole 21a of the first region 21 that opens to the back layer 20e. are different from each other. In other words, the positions of the openings 21b of the holes 21a in the first region 21 that are open to the surface layer 20d and the positions of the openings 21c of the holes 21a of the first region 21 that are open to the back layer 20e are different from each other in the base material. 20 is shifted when viewed along the thickness direction. The hole 21a in the first region 21 is a hole with a bottom.

In this modification, the holes 21a in the first region 21 are bottomed holes, so that breathability inside the shoe 1 can be ensured. In addition, in this modification, since the hole 21a in the first region 21 is a bottomed hole, it is possible to prevent foreign matter such as dirt and sand from entering the inside of the shoe 1 through the hole 21a, and also prevent the outside of the shoe 1 from entering the inside of the shoe 1 through the hole 21a. This prevents the socks inside the shoes 1 from being visible. Furthermore, in this modification, the position of the opening 21b of the hole 21a in the first region 21 that opens to the surface layer 20d, and the position of the opening 21c of the hole 21a of the first region 21 that opens to the back layer 20e. When viewed along the thickness direction of the base material 20, the design effect is achieved by showing the pattern of the back layer 20e from the opening 21b of the surface layer 20d, and the position of the opening 21b and the position of the opening 21c are changed. By slightly shifting the position, visual effects such as a lenticular effect can be produced.

FIG. 12 is a sectional view showing the upper 2 of the shoe 1 according to the second modification of the first embodiment of the present invention, and corresponds to the sectional view taken along the line VI-VI shown in FIG. 2. As shown in FIG. 12, the position of the opening 22b of the hole 22a in the second region 22 that opens to the surface layer 20d and the position of the opening 22c of the hole 22a of the second region 22 that opens to the back layer 20e. are different from each other. In other words, the positions of the openings 22b of the holes 22a in the second region 22 that are open to the surface layer 20d and the positions of the openings 22c of the holes 22a of the second region 22 that are open to the back layer 20e are different from each other in the base material. 20 is shifted when viewed along the thickness direction. The hole 22a in the second region 22 is a hole with a bottom.

In this modified example, the holes 22a in the second region 22 are bottomed holes, so that the breathability of the inside of the shoe 1 can be ensured. In addition, in this modified example, the holes 22a in the second region 22 are bottomed holes, so that foreign objects such as dirt and sand can be prevented from entering the inside of the shoe 1 through the holes 22a, and the socks inside the shoe 1 can be prevented from being seen from the outside of the shoe 1. In addition, in this modified example, the positions of the openings 22b that open in the surface layer 20d among the holes 22a in the second region 22 and the positions of the openings 22c that open in the lining layer 20e among the holes 22a in the second region 22 are offset when viewed along the thickness direction of the base material 20, so that a design effect can be achieved by showing the pattern of the lining layer 20e from the openings 22b in the surface layer 20d, and visual effects such as a lenticular effect can be achieved by slightly offsetting the positions of the

openings

22b and 22c.

(Embodiment 2)
A shoe 1A according to a second embodiment will be described with reference to Fig. 13. Fig. 13 is a development view showing an upper 2A of the shoe 1A according to the second embodiment of the present invention. The shoe 1A according to the second embodiment differs from the shoe 1 according to the first embodiment in that the holes 21a in the first region 21 have two or more types of shapes.

As shown in FIG. 13, the first region 21 includes an extension region 21d adjacent to the throat portion 20b in front of the throat portion 20b. The stretching region 21d extends across the shoe center axis C in the foot width direction. The holes 21a in the stretching region 21d are two or more types of holes having different shapes. Here, the shape of the hole 21a includes the outer shape of the hole 21a and the size of the hole 21a. In this embodiment, the outer shape of each hole 21a in the stretching region 21d is the same rhombus, but the sizes of the holes 21a in the stretching region 21d are different. The size of the hole 21a becomes smaller from the center of the first region 21 in the foot width direction to the end of the first region 21 in the foot width direction. Note that the holes 21a in the stretching region 21d may be two or more types of holes that differ in at least one of the outer shape of the holes 21a and the size of the holes 21a.

Next, the effects of the upper 2A and the shoe 1A according to the present embodiment will be explained.

When the wearer of the shoes 1A performs an action such as running, the movement of the foot differs depending on the part of the foot. In this embodiment, the holes 21a in the first region 21 have two or more types of holes with different shapes, so that the shape of the holes 21a is changed so that the upper 2A can easily deform by following the movement of the foot. Can be adjusted. Therefore, it is possible to reduce the impact of the upper 2A on the foot, and to suppress the occurrence of wrinkles in the upper 2A.

(Embodiment 3)
Shoes 1B according to Embodiment 3 will be described with reference to FIGS. 14 and 15. FIG. 14 is a developed view showing an upper 2B of a shoe 1B according to Embodiment 3 of the present invention. FIG. 15 is a sectional view taken along the line XV-XV shown in FIG. 14. Shoes 1B according to Embodiment 3 are different from shoes 1 according to Embodiment 1 in that the intermediate layer 20f includes regions with different arrangement densities of yarn 20g, and the intermediate layer 20f includes regions with different thicknesses. differ.

As shown in FIG. 14, the base material 20 of the upper 2B includes a first region 21 and a second region 22. The second region 22 is arranged from the lateral part of the upper midfoot R2 to the lateral part of the upper rearfoot R3, and extends from the medial part of the upper midfoot R2 to the upper hindfoot. It is placed over the medial side of R3. A portion of the second region 22 is disposed from the rear portion of the medial foot side edge of the throat portion 20b to the entire medial foot side edge of the collar 20a.

As shown in FIG. 15, the intermediate layer 20f of the first region 21 includes a region where the arrangement density of the thread 20g is different. Hereinafter, the region where the arrangement density of the thread 20g is different is referred to as the density change region 21e. In FIG. 14, the density change region 21e is shown diagrammatically by a thick solid line. The shape of the density change region 21e in a plan view is not particularly limited, but in this embodiment, it is a roughly rectangular shape that is longer in the foot width direction than in the front-to-back direction. The density change region 21e is not limited to the position shown in the figure, and may be changed as appropriate.

As shown in FIG. 15, the arrangement density of the threads 20g in the intermediate layer 20f of the density changing region 21e changes in stages. In this embodiment, the density of the yarn 20g in the intermediate layer 20f of the density change region 21e increases from the center to the end in the foot width direction. In FIG. 15, the left side of the page is the center side in the foot width direction, and the right side of the page is the end side in the foot width direction. For example, the number of threads 20g is zero at the center in the foot width direction of the density change region 21e, and the interval between adjacent threads 20g in the foot width direction is narrowed from the center in the foot width direction toward the ends. The density of the yarn 20g in the layer 20f can be increased from the center to the end in the foot width direction. Note that the density of the yarn 20g in the intermediate layer 20f may increase from the end toward the center in the foot width direction, or may increase from one side to the other in the front-rear direction.

The intermediate layer 20f of the first region 21 includes regions with different thicknesses. Hereinafter, the region where the thickness of the intermediate layer 20f differs will be referred to as a thickness change region 21f. In FIG. 14, the thickness changing region 21f is schematically illustrated with a thick solid line. The shape of the thickness changing region 21f in plan view is not particularly limited, but in this embodiment, it is generally rectangular, which is longer in the foot width direction than in the front-rear direction. Although the thickness changing region 21f coincides with the density changing region 21e in this embodiment, it may be provided at a different position from the density changing region 21e. That is, the thickness changing region 21f is not limited to the illustrated position, and may be changed as appropriate.

As shown in FIG. 15, the thickness D of the intermediate layer 20f in the thickness changing region 21f changes in stages. In this embodiment, the thickness D of the intermediate layer 20f in the thickness changing region 21f increases from the center to the end in the foot width direction. The thickness D of the intermediate layer 20f may increase from the end toward the center in the foot width direction, or may increase from one side to the other in the front-rear direction.

No hole 21a is formed in the hatched portion of the first region 21 shown in FIG. 14. Although not shown, holes 21a are formed between adjacent hatched portions. That is, on both sides of the first region 21 in the foot width direction across the throat portion 20b, portions where the holes 21a are formed and portions where the holes 21a are not formed are alternately arranged in the front-rear direction.

Next, the effects of the upper 2B and the shoe 1B according to the present embodiment will be explained.

In the upper 2B, the material hardness differs depending on the portion where the intermediate layer 20f is present and the portion where the intermediate layer 20f is not present. If the materials have different hardnesses, the load will be concentrated on parts of the upper 2 where the material hardness is lower when the foot is bent, and the upper 2B will be more likely to bend, wrinkle, break, etc. In this embodiment, the arrangement density of the threads 20g in the middle layer 20f changes in stages, thereby making it possible to disperse the load that occurs when the foot is bent. Therefore, the folds and wrinkles of the upper 2B become less noticeable, improving the fit to the wearer's feet, and making it difficult for the upper 2B to break.

In this embodiment, the effect described in paragraph 0066 above can be achieved by changing the thickness D of the intermediate layer 20f in stages. Furthermore, in this embodiment, by changing the thickness D of the intermediate layer 20f in stages, it is possible to express a design with height differences in the thickness direction of the upper 2, thereby creating a visual effect with a three-dimensional effect. . Furthermore, in the present embodiment, since the thickness D of the intermediate layer 20f changes in stages, the back layer 20e comes into partial contact with the foot, thereby increasing the breathability inside the shoe 1B.

(Embodiment 4)
Shoes 1C according to Embodiment 4 will be described with reference to FIG. 16. FIG. 16 is a developed view showing an upper 2C of a shoe 1C according to Embodiment 4 of the present invention. Shoes 1C according to the fourth embodiment differ from the shoes 1 according to the first embodiment in that the base material 20 includes a third region 25.

As shown in FIG. 16, the base material 20 of the upper 2C includes a third region 25 formed by a plurality of threads 20j. In FIG. 16, the third region 25 is hatched. The third region 25 is an area excluding the second area 22 among the diagonally hatched areas. The third region 25 is arranged on the medial foot side portion of the upper midfoot portion R2. The material of the thread 20j in the third region 25 is different from the material of the

threads

20g, 20h in the first region 21 and the material of the

threads

20g, 20h in the second region 22. For example, when the

yarns

20g, 20h in the first region 21 and the

yarns

20g, 20h in the second region 22 are formed only from polyester fibers that do not contain sulfonic acid groups, the yarn 20j in the third region 25 is Molded from fibers other than polyester fibers that do not contain sulfonic acid groups.

Next, the effects of the upper 2C and the shoe 1C according to the present embodiment will be explained.

In order to fit the upper 2C to the wearer's feet, there are parts of the upper 2C that require different elasticity than other parts. An example of such a location is the medial foot side portion of the upper midfoot portion R2. In this embodiment, the base material 20 includes a third region 25 formed by a plurality of threads 20j, and the material of the threads 20j of the third region 25 is the same as the

threads

20g and 20h of the first region 21. The

threads

20g and 20h of the second region 22 are made of a different material. This configuration makes it possible to provide the third region 25 at a location where different elasticity is required, such as the medial side portion of the upper midfoot region R2, and improves the fit of the upper 2C to the wearer's foot. can be increased.

The thread 20j in the third region 25 may be made of a similar material to the

threads

20g, 20h in the first region 21 and the

threads

20g, 20h in the second region 22. For example, the

threads

20g, 20h in the first region 21 and the

threads

20g, 20h in the second region 22 may be made of only polyester fibers that do not contain sulfonic acid groups, and the thread 20j in the third region 25 may be made of a thermoplastic polyester elastomer. With this configuration, the base material 20 of the upper 2C is made of similar materials, making it easier to recycle the base material 20.

The configurations shown in the embodiments above are examples of the content of the present invention, and can be combined with other known techniques, or the embodiments can be combined with each other, It is also possible to omit or change a part of the configuration without departing from the gist of the present invention.

An upper according to a first aspect is an upper for a shoe,
The substrate is a knitted fabric.
the substrate includes a surface layer facing an exterior of the upper;
The surface layer includes a first region formed of a plurality of threads and a second region formed of a plurality of threads and having a higher thread arrangement density than the first region,
the yarns of the first region and the yarns of the second region are of the same material;
The second region is provided with a plurality of colors.

In the upper according to the second aspect, in the upper according to the first aspect, the yarn in the first region and the yarn in the second region are formed only of polyester fibers that do not contain sulfonic acid groups. There is.

In the upper according to the third aspect, in the upper according to the first or second aspect, the first region is a region in which only a plurality of stitches are formed side by side,
The second region is a region in which a plurality of stitches are formed side by side and a yarn formed independently of the stitches is arranged.

In the upper according to the fourth aspect, in the upper according to any one of the first to third aspects, a plurality of holes are formed in the first region.

In the upper according to the fifth aspect, in the upper according to the fourth aspect, the holes in the first region are two or more types of holes having different shapes.

In the upper according to the fourth or fifth aspect, in the upper according to the fourth or fifth aspect, when the shoe is viewed from above, a perpendicular line passing through the center of the shoe in the foot width direction and along the front-rear direction of the shoe is When the shoe center axis is taken as the center axis, the first region extends in the foot width direction across the shoe center axis,
The size of the hole becomes smaller from the center of the first region in the foot width direction toward the end of the first region in the foot width direction.

The upper according to a seventh aspect is the upper according to any one of the fourth to sixth aspects, wherein the base material includes a plurality of layers including a backing layer facing inward of the upper.

In the upper according to the eighth aspect, in the upper according to the seventh aspect, the position of the opening opening to the surface layer among the holes in the first region and the position of the opening opening in the surface layer among the holes in the first region The positions of the openings in the back layer are different from each other.

In the upper according to a ninth aspect, in the upper according to any one of the fourth to eighth aspects, the hole in the first region is a hole with a bottom.

The upper according to a tenth aspect is the upper according to the seventh aspect, in which the base material has three layers including an intermediate layer disposed between the surface layer and the back layer.

The upper according to the eleventh aspect is the upper according to the tenth aspect, in which the intermediate layer includes regions in which the yarn arrangement density is different.

In the upper according to the twelfth aspect, in the upper according to the tenth or eleventh aspect, the arrangement density of the threads in the intermediate layer changes in stages.

The upper according to a thirteenth aspect is the upper according to any one of the tenth to twelfth aspects, in which the intermediate layer includes regions having different thicknesses.

The upper according to the fourteenth aspect is an upper according to any one of the tenth to thirteenth aspects, in which the thickness of the intermediate layer changes in a stepwise manner.

The upper according to a fifteenth aspect is the upper according to any one of the first to fourteenth aspects, wherein the base material includes a third region formed by a plurality of threads;
The material of the thread in the third region is different from the material of the thread in the first region and the thread in the second region.

In the upper according to the sixteenth aspect, in the upper according to the second aspect, the polyester fibers containing no sulfonic acid groups are recycled polyester fibers.

In the upper according to the seventeenth aspect, in the upper according to the second aspect, the polyester fibers that do not contain sulfonic acid groups are raw colored polyester fibers.

In the upper according to the eighteenth aspect, in the upper according to any one of the first to seventeenth aspects, the color of the second region changes in stages.

In the upper according to the nineteenth aspect, in the upper according to any one of the first to eighteenth aspects, the color of the first region and the color of the second region are different from each other.

The upper according to a twentieth aspect is the upper according to any one of the first to nineteenth aspects, in which the upper has three or more colors.

In the upper according to a twenty-first aspect, in the upper according to any one of the first to twentieth aspects, the base material is a knitted fabric formed by warp knitting.

A shoe according to a twenty-second aspect includes the upper according to any one of the first to twenty-first aspects, and a sole of the shoe located below the upper.

1, 1A, 1B, 1C shoes, 2, 2A, 2B, 2C upper, 3 sole, 20 base material, 20a collar, 20b throat part, 20c lace loop part, 20d surface layer, 20e back layer, 20f middle layer, 20g , 20h, 20j yarn, 20i stitch, 21 first region, 21a, 22a hole, 21b, 21c, 22b, 22c opening, 21d stretching region, 21e density change region, 21f thickness change region, 22 second region, 22d stripe, 22e edge, 22f reference part, 23 tongue, 24 shoelace, 25 third region, 30 outsole, 30a ground plane, 31 midsole, C shoe center axis, D thickness, R1 upper forefoot, R2 Upper midfoot, R3 upper rearfoot, S1 first border, S2 second border.

Claims

The upper of the shoe,
Equipped with a base material that is a knitted fabric,
the base material includes a surface layer facing the exterior of the upper;
The surface layer includes a first region formed by a plurality of threads, and a second region formed by a plurality of threads and having a higher thread arrangement density than the first region,
The yarn in the first region and the yarn in the second region are the same material,
The second region is coated with a plurality of colors.
The upper according to claim 1, wherein the yarn in the first region and the yarn in the second region are formed only from polyester fibers that do not contain sulfonic acid groups.
The first region is a region in which only a plurality of stitches are formed side by side,
The upper according to claim 1, wherein the second region is a region in which a plurality of stitches are formed side by side and a yarn formed independently of the stitches is arranged.
The upper according to claim 1, wherein a plurality of holes are formed in the first region.
The upper according to claim 4, wherein the holes in the first region are two or more types of holes with different shapes.
When the shoe center axis is a perpendicular line passing through the center of the shoe in the foot width direction and running along the front-rear direction of the shoe when the shoe is viewed from above, the first region straddles the shoe center axis and extends across the foot width. It extends in the direction of
The upper according to claim 5, wherein the size of the hole decreases from the center of the first region in the foot width direction toward the end of the first region in the foot width direction.
5. The upper of claim 4, wherein the substrate comprises a plurality of layers including a backing layer facing inwardly of the upper.
A position of an opening of the hole in the first region that opens to the surface layer and a position of an opening of the hole of the first region that opens to the back layer are different from each other. Upper as described in 7.
The upper according to claim 7, wherein the hole in the first region is a bottomed hole.
The upper according to claim 7, wherein the base material is a three-layer structure including an intermediate layer disposed between the outer layer and the inner layer.
The upper according to claim 10, wherein the intermediate layer includes regions with different yarn arrangement densities.
The upper according to claim 11, wherein the arrangement density of yarns in the intermediate layer changes in stages.
The upper according to claim 10, wherein the intermediate layer includes regions with different thicknesses.
The upper according to claim 13, wherein the thickness of the intermediate layer changes in stages.
The base material includes a third region formed by a plurality of threads,
The upper according to claim 1, wherein the material of the yarn in the third region is a different material from the yarn in the first region and the yarn in the second region.
The upper according to claim 2, wherein the polyester fiber that does not contain sulfonic acid groups is a recycled polyester fiber.
The upper according to claim 2, wherein the polyester fiber that does not contain sulfonic acid groups is a colored polyester fiber.
The upper according to claim 1, wherein the color of the second region changes in stages.
The upper according to claim 1, wherein the color of the first region and the color of the second region are different from each other.
The upper according to claim 1, wherein the upper has three or more colors.
The upper according to claim 1, wherein the base material is a knitted fabric formed by warp knitting.
The upper according to any one of claims 1 to 21;
a shoe sole located below the upper.