JP7159245B2 - shoes - Google Patents

Description

The present invention relates to shoes.

A type of shoe is known in which the instep is tightened by tightening a shoelace passed through a hole. For example, Patent Literature 1 describes a shoe whose instep is tightened with a shoelace. The shoe includes a pair of auxiliary tightening members connected at their proximal ends to the sole inside the instep wings and having rings at their free ends, the rings of the auxiliary tightening members extending from the instep wings. through the opening of This shoe is tightened by threading the shoelace through the ring of the auxiliary tightening member and the through hole of the instep, thereby partially tightening the instep of the foot with the auxiliary tightening member in addition to tightening by the shoelace.

Japanese Patent Application Laid-Open No. 2007-190351

The inventors of the present invention have obtained the following recognition regarding the holdability and fit of shoes.
When the wearer performs low-intensity movements such as standing still or walking at a low speed, it is desirable that shoes worn for sports, etc. should have an appropriate fit and reduce the sense of restraint. When doing it, it is desirable to follow the movement and hold the foot firmly. However, if the shoelace is strongly tightened in order to improve holdability, the feeling of restraint continues even during low-intensity movements, and the fit deteriorates. In other words, there is a problem that it is difficult to achieve both improvement in holdability and securing of fit.

Such problems are not limited to sports shoes, and can occur in other types of shoes as well.

The present invention has been made in view of these problems, and an object of the present invention is to provide shoes capable of improving holdability while maintaining fit.

In order to solve the above-mentioned problems, a shoe according to one aspect of the present invention has a lacing portion formed therein, and is provided on the inner foot side across a central opening formed forward from the foot insertion portion of the upper. 1 formation part and a second formation part provided on the outer leg side, the tip part is fixed to the second formation part, the tip part is provided with the first lacing structure, and extends downward so as to contact the inner leg a second support member having a distal end portion fixed to the first forming portion, a second lacing structure provided at the distal end portion, and extending downward so as to abut on the outer leg; a shoelace passing through the portion and continuously passing through the first and second lacing structures.

In addition, any combination of the above, and the mutual replacement of the components and expressions of the present invention between methods, devices, programs, temporary or non-temporary storage media recording programs, systems, etc. It is effective as an aspect of the present invention.

ADVANTAGE OF THE INVENTION According to this invention, the shoes which can improve holdability can be provided, maintaining a fit feeling.

It is a top view showing roughly the shoe concerning an embodiment of the invention. FIG. 2 is a cross-sectional view of the shoe of FIG. 1 taken along the line AA; Figure 2 is an enlarged view of the formation and support member of the shoe of Figure 1; FIG. 4 is a plan view schematically showing the support member of FIG. 3; FIG. 4 is an arrangement diagram showing an arrangement example according to the tightening force of the support member of FIG. 3; FIG. 4 is a layout diagram showing an example of layout of the support members of FIG. 3 according to the load from the foot; FIG. 4 is an arrangement diagram showing a first arrangement example according to the movement of the support member of FIG. 3; FIG. 4 is an arrangement diagram showing a second arrangement example according to the movement of the support member of FIG. 3; FIG. 4 is an arrangement diagram showing a third arrangement example according to the movement of the support member of FIG. 3; FIG. 4 is a layout diagram showing a layout example corresponding to the arch of the support member in FIG. 3; FIG. 4 is a shape diagram showing an example of a rigidity reduction portion of the support member of FIG. 3; 4 is another shape diagram showing an example of a rigidity reduction portion of the support member of FIG. 3. FIG. 4 is still another shape diagram showing an example of a rigidity reduction portion of the support member of FIG. 3. FIG. FIG. 4 is an enlarged view showing an enlarged periphery of the lacing structure of the support member of FIG. 3; 1. It is an enlarged view which expands and shows the circumference|surroundings of the lacing structure of the formation part of the shoes of FIG. 4 is a graph showing the results of a tensile test of the support member of FIG. 3; FIG. 2 is a schematic diagram schematically showing forces acting on each part of the shoe of FIG. 1; It is a top view which shows roughly the shoe which concerns on a 1st modification. FIG. 19 is a cross-sectional view of the shoe of FIG. 18 taken along the line BB. FIG. 19 is a developed view of the tongue of the shoe of FIG. 18 developed on a plane; It is a top view which shows roughly the shoe which concerns on a 2nd modification. FIG. 22 is a cross-sectional view of the shoe of FIG. 21 taken along line MM; FIG. 22 is a cross-sectional view of the shoe of FIG. 21 taken along line NN; It is a top view which shows roughly the shoe which concerns on a 3rd modification. FIG. 25 is a cross-sectional view of the shoe of FIG. 24 taken along line PP;

Shoes have the property of fitting well to the shape of the foot (hereinafter referred to as "fitness") during normal times such as when standing still or walking, and during exercise the foot does not move against the outsole. It is desirable to have a property (hereinafter referred to as "holding property") that constrains to When the holdability is enhanced, the amount of movement of the upper during movement is reduced, and the property of the upper to receive the force in the direction that the foot falls from the outsole of the shoe (hereinafter referred to as "stability") is enhanced. However, the smaller the gap between the foot and the upper, the better the holdability and stability, but the less the fit, so it is difficult to achieve both.

From this point of view, the shoe described in Patent Document 1 will now be considered. The shoe has a pair of auxiliary tightening members extending from the proximal end to the free end. A shoelace is passed through the ring connected to the free end, and the shoelace is tightened, thereby tightening the auxiliary tightening member together with the vamp. By tightening the auxiliary tightening member, one of the base end sides of the auxiliary tightening member is firmly joined to the slightly forward part of the arch of the bottom edge on the inside, and the other is on the outside at the same position in the front-back direction as the left and right inside. They are firmly joined to the slightly rear portion.

In this shoe, the free end of the auxiliary tightening member is not fixed to the vamp. Therefore, when the free end is strongly tightened with the shoelace, the instep blade on the opposite side of the auxiliary tightening member is also strongly tightened together, and the foot is strongly tightened from the inside and the outside. Therefore, if the free end is strongly tightened in a static state in order to enhance holdability, the instep wing is also strongly tightened at the same time, resulting in a poor fit. In addition, if the free ends are loosely tightened to improve the fit, the instep blades are also loosely tightened at the same time, resulting in poor holdability. In other words, with this shoe, the force with which the foot is tightened hardly changes between when the person is exercising and when the person is at rest.

The present invention has been made based on the above considerations, and by fixing the tip of the support member to the upper, the force that tightens the foot during exercise and at rest can be changed, and the fit and movement at rest can be improved. It is intended to be compatible with the holdability of time.

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on preferred embodiments with reference to the drawings. In the embodiments and modified examples, the same or equivalent constituent elements and members are denoted by the same reference numerals, and overlapping descriptions are omitted as appropriate. In addition, the dimensions of the members in each drawing are appropriately enlarged or reduced for easy understanding. Also, in each drawing, some of the members that are not important for explaining the embodiments are omitted.

Also, terms including ordinal numbers such as first, second, etc. are used to describe various components, but these terms are used only for the purpose of distinguishing one component from other components, and the terms The constituent elements are not limited by

[Embodiment]
The configuration of shoe 100 according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view schematically showing shoe 100 according to an embodiment. Although the following figures, including FIG. 1, show a shoe for the right foot unless otherwise specified, the description herein applies equally to the shoe for the left foot.

The shoe 100 of this embodiment can be used, for example, as a shoe for walking or running, or as a shoe for sports such as tennis and basketball. A shoe 100 has a sole 10 and an upper 20 . As shown in FIG. 1, the inner leg side (lower side in the drawing) from the widthwise center line La of the upper 20 is the inner leg portion 22, and the outer leg side (upper side in the drawing) from the widthwise center line La is the outer leg portion. 24. Also, the direction from the outer leg side to the inner leg side is called medial, and the opposite direction is called lateral. Also, the direction along the center line La is referred to as the “front-rear direction”. In each figure, arrow W indicates the width direction, and arrow X indicates the front-rear direction. Also, the direction toward the toe side along the center line La is called "front side" or "forward", and the opposite side is called "back side" or "rear side". Therefore, the width direction is orthogonal to the center line La.

FIG. 2 is a vertical cross-sectional view taken along line AA of FIG. The upper side of the state where the shoe 100 is placed on a horizontal surface (hereinafter referred to as "horizontal state") is referred to as "upper side" and "upper side", and the opposite side is referred to as "lower side" and "lower side". Moreover, in a horizontal state, the direction extending vertically is referred to as the “vertical direction”.

The upper 20 includes an inner foot portion 22, an outer foot portion 24, a first forming portion 26, a second forming portion 28, a first support member 32, a second support member 34, a shoelace 60, and a shoe tongue. 70. The upper 20 encloses an interior space 20a for accommodating the foot. The upper 20 has a central opening 20c forward from the foot insertion portion 20b. When collectively referring to the first formation portion 26 and the second formation portion 28, they may be referred to as a formation portion. Also, when the first support member 32 and the second support member 34 are collectively referred to, they may be referred to as support members.

Sole 10 includes outsole 12 and insole 14 . The sole 10 is fixed to the upper 20 by means of adhesion or the like.

Also referring to FIG. 3, the formation portion will be described. FIG. 3 is an enlarged view showing an enlarged formation part and a support member. The first forming portion 26 is provided on the inner leg side of the central opening 20c. The second forming portion 28 is provided on the outer leg side of the central opening 20c. That is, the first formation portion 26 and the second formation portion 28 are arranged with the central opening 20c sandwiched in the width direction. A plurality of lacing parts 62 are formed in the first forming part 26 and the second forming part 28, respectively. The lace threading portion 62 is a portion for threading the shoelace 60, and may be a through hole, a string hooking portion, or the like. As an example, the lacing part 62 of the present embodiment is a through hole penetrating vertically. Each of the first forming portion 26 and the second forming portion 28 has six lacing portions 62 arranged substantially in the front-rear direction at predetermined intervals.

If the lacing portion 62 has low rigidity, the tension of the shoelace 60 escapes during high-intensity exercise, and the supporting function of the support member cannot be fully exhibited. Therefore, in this embodiment, the first and second forming portions 26 and 28 have reinforcing structures 26 s and 28 s for reinforcing the stringing portion 62 . The reinforcing structures 26s and 28s only need to have higher rigidity than the surroundings, and various configurations can be adopted. For example, the first and second forming portions 26 and 28 of the upper 20 are made of a low-elasticity material having elasticity lower than the surrounding area, a material thicker than the surrounding area, a material having a higher density than the surrounding area, or a material harder than the surrounding area. may be formed.

Further, the stringing portion 62 of the first and second forming portions 26 and 28 may be configured to have higher rigidity than the surroundings. In particular, the edge of the hole through which the shoelace 60 of the lacing portion 62 passes may be configured to have higher rigidity than the surroundings. For example, a reinforcing member such as an eyelet or hook made of metal or resin may be provided at the edge of the hole of the lacing portion 62, or the edge of the hole of the lacing portion 62 may be made thicker than the surroundings by stitching or the like. good too. Further, among the first and second forming portions 26 and 28, peripheral regions 26g and 28g of fixing portions of the support member, which will be described later, may be made higher in rigidity than the surroundings. The surrounding areas 26g and 28g are also areas where through holes 26h and 28h, which will be described later, are provided.

The support member will be described with reference to FIG. 4 as well. FIG. 4 is a plan view schematically showing a support member. The first and second support members 32, 34 are string-like or band-like members extending from lower base ends 32j, 34j to upper tip ends 32h, 34h. Proximal portions 32j, 34j may be fixed to one or both of upper 20 and sole 10. FIG. By way of example, proximal ends 32j, 34j may be secured to the bottom of outsole 12, insole 14, or upper 20, or between them. In the example of FIG. 2, the base ends 32j, 34j are fixed between the upper 20 and the insole 14. In the example of FIG.

If the flexibility of the support member is too low, the feel of the support member against the foot will be poor. Therefore, the support member of this embodiment is made of a material having higher flexibility than the material of the upper 20 . In other words, the support member is made of a material that is more flexible than the material of the upper 20 .

As shown in FIG. 2, the first and second support members 32 and 34 have portions extending substantially vertically inside the upper 20 so as to abut on the inner leg or the outer leg. As shown in FIG. 3 , the tip portion 32 h of the first support member 32 passes through a through hole 28 h provided in the second formation portion 28 from bottom to top and protrudes to the upper surface of the second formation portion 28 . The tip portion 32h has a fixing portion 32f that is fixed to the lower side or the upper side of the second forming portion 28. As shown in FIG. A tip portion 34 h of the second support member 34 passes through a through hole 26 h provided in the first formation portion 26 from bottom to top and protrudes to the upper surface of the first formation portion 26 . The distal end portion 34 h has a fixing portion 34 f fixed to the lower side or the upper side of the first forming portion 26 . The through holes 26h, 28h may be slit-shaped openings formed in the forming portions 26, 28. As shown in FIG.

As shown in FIG. 4, the distal end portions 32h, 34h of the first and second support members 32, 34 are provided with first and second lacing structures 32g, 34g. The lacing structures 32g and 34g are portions for threading the shoelaces 60. As shown in FIG. The lacing structures 32g and 34g of the present embodiment are formed at folded portions by folding back the tips of the tip portions 32h and 34h and fixing them in the middle of the first and second support members 32 and 34 by stitching or the like. It is a through hole in the front-rear direction.

The fixing portions 32f and 34f may be provided on the distal side of the lacing structures 32g and 34g, may be provided on the proximal side of the lacing structures 32g and 34g, and may be provided on the base end side of the lacing structures 32g and 34g. may be provided in In the example of FIG. 4, the fixing portions 32f and 34f are provided on the base end side of the lacing structures 32g and 34g, and are sewn and fixed to the upper surfaces of the forming portions 28 and 26, respectively. Therefore, since the lacing structures 32g and 34g are supported at two points by the through holes 26h and 28h and the fixed portions 32f and 34f, deformation of the lacing structures 32g and 34g can be suppressed.

The shape of the support member will be explained. Various shapes can be adopted for the support members 32 and 34 as long as they can wrap and hold the inner leg and the outer leg. For example, the support members 32 and 34 may be string-like, band-like, or a combination of these.

In the example of FIG. 4, the support members 32, 34 include band-shaped portions 32b, 34b and front-rear width changing portions 32m, 34m whose front-rear width gradually increases downward. In this example, the front-to-rear width changing portions 32m and 34m are substantially trapezoidal portions whose lower sides are wider. By having the band-shaped portions 32b and 34b, the contact area with the inner leg and the outer leg can be increased to disperse the force. By having the front-rear width changing portions 32m and 34m, the area of contact with the arch of the foot can be increased to improve foot contact. Note that the longitudinal widths of the band-shaped portions 32b and 34b may be constant or may vary. The longitudinal width of the band-shaped portion 34b in FIG. 4 is substantially constant, and the longitudinal width of the band-shaped portion 32b gradually decreases toward the distal end side.

Shoelace 60 will be described. The shoelace 60 alternately passes through a plurality of lacing sections 62 and lacing structures 32g, 34g on the inner foot side and the outer foot side, and both ends are tied. In particular, the lace 60 passes through the lacing section 62 and continues through the lacing structures 32g, 34g, as shown in FIG. That is, the shoelace 60 does not pass through the lacing portion 62 between the lacing structures 32g and 34g, but passes through the lacing structures 32g and 34g in the same loop. By continuously passing the shoelace 60, the lacing force is evenly applied to the lacing structures 32g and 34g, and the imbalance between the forces applied to the inner leg and the outer leg can be suppressed.

The tongue 70 will be explained. As shown in FIGS. 1 and 2, the tongue 70 is provided on the inner space 20a side of the upper 20 . The tongue 70 covers the central opening 20c inside the upper 20 . The support member extends in the width direction on the upper surface side of the shoe tongue 70 . A portion of the support member is interposed between the tongue 70 and the upper 20 . Shoelace 60 is arranged on the upper surface of shoe tongue 70 .

Next, an arrangement example of the support members will be described. The support member is a member that receives tightening of the shoelace 60 . Therefore, the support member may be arranged considering the lace tightening direction of the shoelace 60 . FIG. 5 is an arrangement diagram showing an arrangement example of support members according to tightening force. In the example of FIG. 5 , tension forces indicated by arrows d1 and d2 (hereinafter referred to as forces d1 and d2) are applied to the second support member 34 along the tightening direction of the shoelace 60 . Due to the tension of the shoelace 60, a slightly forward force d1 in the width direction is applied to the front end of the lacing structure 34g. Due to the tension of the shoelace 60, a slightly rearward force d2 in the width direction is applied to the rear end of the lacing structure 34g.

By receiving the forces d1 and d2, a tightening force indicated by an arrow D (hereinafter referred to as a tightening force D) acts on the second support member 34 as a resultant force. The tightening force D is a force in the direction from the inner leg side to the outer leg side. The second support member 34 extends along the direction of the tightening force D in response to the tightening force D. As shown in FIG. The first support member 32 also extends along the direction of the tightening force of the shoelace 60 .

A support member is a member that receives a load from the foot during exercise. Therefore, the support member may be arranged in consideration of the direction in which the load is applied from the foot during exercise. FIG. 6 is an arrangement diagram showing an arrangement example of support members according to the load from the foot. In the example of FIG. 6, a load indicated by an arrow E (hereinafter referred to as load E) acts on the second support member 34 along the direction of the load from the foot. In order to accommodate the load E, the second support member 34 extends along the direction in which the load E from the foot is applied. The first support member 32 also extends along the direction in which the load from the foot is applied.

In addition, since the direction in which the load is applied from the foot during exercise differs depending on the content of the exercise, the support members may be arranged according to the load direction of each target exercise. 7 to 9 are arrangement diagrams showing examples of arrangement of support members according to movement. The support members may be positioned and oriented based on the load direction of each subject motion, as shown in FIGS. 7-9.

In the example of FIG. 7, the first support member 32 on the inner foot side is arranged in front of the second support member 34 on the outer foot side, and supports the protuberance of the bone near the ball of the foot. The foot-side second support member 34 supports the protruding portion of the bone behind the ball of the foot. As a result, it is possible to obtain the effect of suppressing excessive falling of the foot during an action such as abrupt falling toward the inner leg.

In the example of FIG. 8, the first support member 32 on the side of the inner foot is arranged behind the second support member 34 on the side of the outer foot, and supports the vicinity of the front-rear center of the arch of the foot. Member 34 supports a bony prominence near the ball of the foot. As a result, it is possible to obtain the effect of suppressing the sagging of the arch of the foot and the effect of suppressing the slippage of the shoe and the foot in the lateral direction when a large load is applied to the outer foot side of the forefoot.

In the example of FIG. 9, the first support member 32 on the inner foot side supports the vicinity of the front-back center of the arch of the foot, and the second support member 34 on the outer foot side is positioned behind the first support member 32 on the inner foot side. It is positioned to support the bony ridges of the ball of the foot and the mid-region of the heel. As a result, it is possible to obtain the effect of suppressing the sagging of the arch of the foot and the effect of suppressing the slippage of the shoe and the foot in the lateral direction when a large load is applied to the outer foot side of the middle foot.

In addition, the first support member 32 on the inner leg side may be arranged at a position capable of suppressing collapse of the arch during exercise. FIG. 10 is a layout diagram showing an example of layout of support members corresponding to collapse of the arch 8a. In the example of FIG. 10, the first support member 32 on the inner leg side is arranged to contact the arch 8a in order to prevent the arch 8a from collapsing. By coming into contact with the arch 8a, the support member imparts a support force indicated by an arrow F (hereinafter referred to as support force F) to the arch 8a based on the tension of the shoelace. By applying the support force F, the support member can pull up the arch 8a and suppress the collapse of the arch 8a.

The shape of the support member will be further explained. If the support member is strongly pressed against a protruding portion of the bone such as the epiphysis or the head of the bone for a long period of time, there is a possibility that the pressed portion may become painful. Therefore, when the support member supports protruding portions of bones such as the epiphysis and the head of the bone, the rigidity of the region that is pressed against these portions may be configured to be low. For example, the second support member 34 on the side of the outer foot that supports the protruding portion of the bone near the ball of the foot may be configured to have lower rigidity than the first support member 32 on the side of the inner foot. In this case, as an example, the second support member 34 on the outer leg side may be made of a material having lower rigidity than the material of the first support member 32 on the inner leg side. Also, the lower regions of the first and second support members 32 and 34 may have different elasticity.

From a similar point of view, a rigidity reduction portion 36 having a lower rigidity than the surrounding area may be provided in the front-back direction intermediate region of the second support member 34 on the outer leg side. The reduced-rigidity portion 36 is provided at a portion of the support member that contacts the protruding portion of the bone, such as the epiphysis and the head of the bone. By having the rigidity reduction portion 36, it is possible to weaken the pressure from the support member on the protruding portion of the bone such as the epiphysis and the head of the bone. 11 to 13 are diagrams showing an example of the rigidity reducing portion 36 of the support member. In the example of FIG. 11, the reduced-rigidity portion 36 of the second support member 34 is a flexible portion 36s made of a material that is more flexible than its surroundings. In the example of FIG. 12, the rigidity reduction portion 36 of the second support member 34 is a plurality of slit-shaped notch portions 36p. In the example of FIG. 13, the rigidity reduction portion 36 of the second support member 34 is a single notch portion 36q.

The lacing structures 32g, 34g are further described. FIG. 14 is an enlarged view showing the surroundings of the lacing structures 32g and 34g. A center line Lc in this figure is a center line extending in the width direction through the front and rear centers of the lacing structures 32g and 34g. From the viewpoint of ensuring holdability, it is desirable that the lacing structures 32g and 34g have a small deformation. Therefore, the support members 32, 34 of this embodiment have deformation suppressing structures 32k, 34k for reinforcing the stringing structures 32g, 34g.

As the deformation suppressing structures 32k, 34k, it is sufficient to reinforce the stringing structures 32g, 34g, and various configurations can be adopted. For example, the lacing structures 32g and 34g of the support members may be made of a low-stretch material having low stretchability, a material that is thicker than the surrounding material, a material that is denser than the surrounding material, or a material that is harder than the surrounding material. For example, the stringing structures 32g and 34g may be provided with reinforcing members such as metal or resin eyelets.

From the viewpoint of reducing deformation of the lacing structures 32g and 34g to ensure holdability, the lacing structures 32g and 34g have elasticity in the direction (= width direction) in which the force from the shoelace 60 is received, and the elasticity in the other direction (= It is desirable that the stretchability in the front-rear direction is smaller than that in the longitudinal direction. For example, as shown in FIG. 14, the widthwise stretchability of the lacing structures 32g, 34g may be less than the widthwise stretchability of the forming portions 26, 28. FIG. In particular, the widthwise stretchability of the lacing structures 32g and 34g at the center in the front-rear direction may be smaller than the widthwise stretchability of the forming portions 26 and 28 .

FIG. 15 is an enlarged view showing the surroundings of the lacing structures 32g and 34g of the first and second forming portions 26 and 28 in an enlarged manner. From the viewpoint of suppressing deformation of the lacing structures 32g and 34g to ensure holdability, fixing regions of the first and second forming portions 26 and 28 to which the first and second lacing structures 32g and 34g are fixed are provided. 30d may be provided with a low-stretchable portion 30e having lower stretchability in the width direction than the surroundings.

As an example, the fixing region 30d is formed from the front ends of the front end portions 32h and 34h of the front support member (the second support member 34 in the example of FIG. 15) of the first and second formation portions 26 and 28 to the first and second formation portions 26 and 28, respectively. It may be a portion between the rear ends of the rear support members (the first support member 32 in the example of FIG. 15) of the support members 32 and 34 . The entire fixed region 30d may be the low stretchable portion 30e, or part of the fixed region 30d may be the low stretchable portion 30e.

In addition, when a tension toward the base ends 32j and 34j is applied to the fixing portions of the tip portions 32h and 34h, the low stretchable portion 30e can resist the tension against the fixing portions of the tip portions 32h and 34h. It may also be provided continuously on the upper 20 from the viewpoint of exerting a strong resistance. As an example, as shown in FIG. 15, the low stretchable portion 30e is provided continuously from the fixed portions of the tip portions 32h and 34h of the first and second forming portions 26 and 28 to the inner leg portion 22 and the outer leg portion 24. may be

As shown by the dashed line in FIG. 15, the low stretchable portion 30e on the side of the inner leg portion 22 extends from the first forming portion 26 to the inner leg portion 22 in the front-to-rear width of the distal end portion 34h of the second support member 34. It is provided in a band-like region extending to the lower base end of 22 (the portion fixed to sole 10). In addition, the low stretchable portion 30e on the outer leg portion 24 side extends from the second forming portion 28 to the outer leg portion 24 in the front-rear width of the distal end portion 32h of the first support member 32, and extends from the lower base end of the outer leg portion 24. It is provided in a band-like region extending to the part (the part fixed to the sole 10). In other words, the lower end 30f of the low stretchable portion 30e extends to the portion of the inner leg portion 22 and the outer leg portion 24 fixed to the sole 10 .

In this case, when tension is applied to the fixed portions of the distal end portions 32h and 34h toward the proximal end portions 32j and 34j of the first and second support members 32 and 34, the low stretchable portion extends to the upper 20. 30e can impart a resistance force to the fixed portions of the tip portions 32h and 34h so as to resist the tension thereof.

For example, the low-stretchable portion 30e may be formed of a low-stretchable material having a lower stretchability than the surroundings of the low-stretchable portion 30e, a material thicker than the surroundings, a material having a higher density than the surroundings, or a material harder than the surroundings. .

In particular, among the first and second forming portions 26 and 28, a corresponding region 30c corresponding to the front-rear center of the first and second lacing structures 32g and 34g has a low stretchable portion 30e having a lower stretchability in the width direction than the surrounding area. may be provided. That is, the corresponding region 30c (the region near the center line Lc in FIG. 15) of the first and second forming portions 26 and 28 may be the low stretchable portion 30e. In the first and second forming portions 26 and 28, the front and rear ranges of the fixing portions 32f and 34f may be the low expansion/contraction portions 30e.

Next, the rigidity of the support member will be explained. FIG. 16 is a graph showing the results of a tensile test of sample T of the support member. This graph shows elongation as a percentage of maximum elongation on the horizontal axis and load on the vertical axis. This graph shows the test results of the load in the direction received from the foot for the sample T of the support member formed in a predetermined shape from a predetermined material. If the load (=rigidity) relative to the amount of elongation is too high, the fit will be impaired, and if the load (=rigidity) relative to the amount of elongation is too low, the stability will be impaired.

From the viewpoint of ensuring good fit and stability, the inventors studied the stiffness (initial stiffness) when the amount of elongation is near zero and the stiffness when the amount of elongation is 100%. Through this study, the initial stiffness is in the range of 0.01 N / mm or more and 0.15 N / mm or less, and the stiffness at 100% elongation is in the range of 0.5 N / mm or more and 10 N / mm or less. I got a suggestion that it can be secured. Samples are not limited to the above and are selected according to the desired balance of fit and stability.

With reference to FIG. 17, an example of the hold operation during exercise of the shoe 100 configured as described above will be described. 17A and 17B are schematic diagrams schematically showing forces acting on each part of the shoe 100 when a load is applied.
(1) When the shoe 100 receives a load, as indicated by an arrow G, an outward load (hereinafter referred to as load G) from the foot is applied to the support member 34 on the outer leg side.
(2) When the load G is applied to the support member 34, an outward force is applied to the first forming portion 26 of the upper 20 to which the tip portion 34h of the support member 34 is fixed.

(3) When an outward force is applied to the first forming portion 26 , an outward force acts on the inner leg portion 22 of the upper 20 .
(4) As a result, the inner leg is supported by the inner leg portion 22, the outer leg is supported by the support member 34, and the entire leg is firmly held, so that the shaking of the leg can be reduced.

Also, when the shoe 100 receives an inward load from the foot, the inner foot is supported by the support member 32 and the outer foot is supported by the outer foot portion 24 by the same mechanism of action, so that the entire foot is firmly held. Since it is done, it is possible to reduce the shake of the foot. In other words, even if the foot is not completely restrained at rest, stability can be ensured by dynamic force input and transmission during exercise. In addition, if the foot is not completely restrained when standing still or walking, the degree of freedom of the foot can be ensured and a comfortable fit can be obtained. By appropriately selecting the rigidity of the support member according to the purpose of use of the shoe, the balance between the degree of freedom of the foot at rest and the stability during exercise can be adjusted.

An overview of one embodiment of the present invention will be described. A shoe 100 according to one aspect of the present invention has a lacing portion 62 formed therein, and a first formation portion provided on the inner leg side across a central opening 20c formed forward from a foot insertion portion 20b of an upper 20. 26 and the second forming portion 28 provided on the outer leg side, and the tip portion 32h are fixed to the second forming portion 28, the tip portion 32h is provided with the first lacing structure 32g, and the inner leg inside the upper 20 is provided with a first lacing structure 32g. The first support member 32 extends downward so as to abut on the upper 20, and the tip portion 34h is fixed to the first forming portion 26, and the tip portion 34h is provided with the second lacing structure 34g. A second support member 34 extending downward to contact the foot, and a shoelace 60 passing through the lacing part 62 and continuously passing through the first and second lacing structures 32g, 34g. .

According to this aspect, by fixing the tip portion of the support member to the upper 20, the force that tightens the foot can be changed between when exercising and when standing still, and the fit feeling when standing and the holdability when exercising can be improved. .

The first and second forming portions 26 and 28 may have reinforcing structures 26s and 28s for reinforcing the lacing portion 62 . In this case, the lacing portion 62 is reinforced by the reinforcing structures 26s and 28s, so that the escape of tension during high-strength operation is reduced, and holdability can be ensured.

As noted above, the reinforcing structures 26s, 28s may be formed of a low stretch material having less stretch than the surroundings, a material thicker than the surroundings, a material denser than the surroundings, or a material stiffer than the surroundings. . In addition, for example, the edge of the hole of the lacing portion 62 through which the shoelace 60 passes is reinforced with metal or resin eyelets, hooks, or the like, so that the edge of the hole through which the shoelace 60 passes is made more rigid than the surroundings. A member may be provided, or a thick portion may be provided in which the edge of the hole of the lacing portion 62 is made thicker than the surroundings by holing or the like. Also, a plurality of these reinforcing structures may be combined.

The first and second support members 32, 34 may have deformation restraint structures 32k, 34k for reinforcing the first and second lacing structures 32g, 34g. In this case, deformation of the lacing structures 32g and 34g can be suppressed, and holdability is improved.

The first and second support members 32, 34 may include strips 32b, 34b. In this case, a large area of the arch of the foot can be supported.

Of the first and second forming portions 26 and 28, a corresponding region 30c corresponding to the front and rear center of the first and second lacing structures 32g and 34g is provided with a low stretchable portion 30e having a lower stretchability in the width direction than the surrounding area. may be In this case, since the deformation of the corresponding region 30c is suppressed, the release of the tension is reduced, and the holdability is improved.

Among the first and second forming portions 26 and 28, a fixing region 30d to which the first and second lacing structures 32g and 34g are fixed is provided with a low stretchable portion 30e having a width direction stretchability lower than that of the surrounding area. good too. In this case, the deformation of the fixing region 30d is suppressed, so that the escape of tension is reduced and the holding property is improved.

At least one of the first and second support members 32 and 34 may be provided with a rigidity reduction portion 36 having lower rigidity than the surroundings in the front-rear intermediate region. In this case, the support member can have flexibility and strength.

The reduced stiffness portion 36 may include a flexible portion 36s or a notch portion 36p that is more flexible than its surroundings. In this case, the support member can have flexibility and strength.

The first and second support members 32, 34 may have front-rear width changing portions 32m, 34m whose front-rear width gradually increases downward. In this case, the area of the contact portion with the arch of the foot can be increased to improve foot contact.

The lower regions of the first and second support members 32, 34 may have different elasticities. In this case, the holdability can be adjusted separately for the inner and outer legs.

The first and second support members 32 , 34 may be made of a material that is more flexible than the material of the upper 20 . In this case, it is possible to improve the foot contact while ensuring the holdability of the support member.

Exemplary embodiments of the present invention have been described above in detail. All of the above-described embodiments merely show specific examples for carrying out the present invention. The contents of the embodiments do not limit the technical scope of the present invention, and many design changes such as changes, additions, and deletions of constituent elements can be made without departing from the spirit of the invention defined in the claims. It is possible. In the above-described embodiment, descriptions such as "of the embodiment", "in the embodiment", etc. are added to the contents that allow such design changes. Changes are not unacceptable. Moreover, the hatching attached to the cross section of the drawing does not limit the material of the hatched object.

Modifications will be described below. In the drawings and description of the modified example, the same reference numerals are given to the same or equivalent components and members as the embodiment. Explanations that overlap with the embodiment will be omitted as appropriate, and the explanation will focus on the configuration that is different from the embodiment.

[First modification]
A configuration of a shoe 200 according to a first modified example will be described. FIG. 18 is a plan view schematically showing a shoe 200 according to the first modified example, and corresponds to FIG. In this figure, illustration of the shoelaces 60 is omitted for the sake of easy understanding. FIG. 19 is a cross-sectional view of shoe 200 taken along line BB and corresponds to FIG. FIG. 20 is a developed view of the shoe tongue 70 of the shoe 200 developed on a plane. The shoe 200 according to the first modification differs from the shoe 100 according to the embodiment in the configuration of the shoe tongue 70, and the other configurations are the same. Therefore, the configuration of the shoe tongue 70 will be mainly described.

The tongue 70 covers the central opening 20c inside the upper 20 . The shoe tongue 70 differs from the embodiment in that it has a protrusion 70e that protrudes in the width direction. The projecting portion 70e extends downward inside the first and second support members 32, 34 (on the side opposite to the upper 20). That is, the support members 32 and 34 are sandwiched between the projecting portion 70e and the upper 20. As shown in FIG. By interposing the projecting portion 70e between the support member and the foot, the support members 32, 34 can be prevented from coming into direct contact with the arch of the foot, and the foot contact can be improved.

A lower end 70j of the protruding portion 70e may extend below the base ends 32j and 34j of the support members 32 and 34 . That is, the base ends 32j, 34j of the support members 32, 34 are arranged above the lower end 70j of the projecting portion 70e. In this case, the area of direct contact between the support members 32 and 34 and the arch of the foot can be reduced.

The lower end 70j of the projecting portion 70e may be a free end that is not fixed, or may be fixed to the outsole 12, the insole 14, or the lower portion of the upper 20, or may be fixed therebetween. The lower end 70j of this modification is fixed between the upper 20 and the insole 14 from the viewpoint of suppressing the forward movement of the tongue 70 and the support members 32 and 34 when the foot is put on the shoe 100. FIG. The base ends 32j, 34j of the support members 32, 34 may be fixed in the middle of the protrusion 70e. In this case, the positional deviation of the support members 32, 34, the projecting portion 70e, and the upper 20 can be reduced.

The projecting portion 70e may have a shape that partially overlaps the first and second support members 32 and 34 in a plan view, as indicated by the solid line in FIG. , may overlap with all of the first and second support members 32 and 34 in plan view. In other words, the projecting portion 70e has a shape that partially or entirely includes the first and second support members 32 and 34 in plan view.

As shown in FIG. 18, a position regulating portion 72 for regulating the positions of the first and second support members 32 and 34 is provided on the upper surface of the shoe tongue 70 of this modification. By having the position restricting portion 72, it is possible to suppress the movement of the support members in the front-rear direction, and to reduce the displacement of the positional relationship between the support members 32, 34 and the upper 20. As shown in FIG.

Although the configuration of the position regulating portion 72 is not limited, the position regulating portion 72 of this modified example is a band-shaped member that extends in the front-rear direction and is fixed to the shoe tongue 70 at a plurality of positions spaced apart in the front-rear direction by means of stitching or the like. is. The position restricting portion 72 is provided at the center of the shoe tongue 70 in the width direction, and forms a gap 72s between the upper surface of the shoe tongue 70 and the support member to pass therethrough in the width direction. By allowing the support member to pass through the gap 72s, the position of the support member in the front-rear direction is regulated within the front-rear range of the gap 72s. It is not essential that the position regulating portion 72 is provided at the center in the width direction of the shoe tongue 70, and the position regulating portion 72 may be arranged at a position closer to the inner leg side or the outer leg side from the center in the width direction.

Although the first and second support members 32 and 34 may be passed through one gap 72s, they are passed through separate gaps 72s in this modified example. In this case, the positions of the first support member 32 and the second support member 34 can be arranged at more appropriate positions. Moreover, both the first and second support members 32 and 34 may be passed through the single gap 72s, or only one of the support members may be passed through the single gap 72s. The gap 72s may or may not allow the shoelace 60 to pass therethrough.

[Second modification]
A configuration of a shoe 300 according to a second modified example will be described. FIG. 21 is a plan view schematically showing a shoe 300 according to a second modification, and corresponds to FIG. FIG. 22 is a cross-sectional view of shoe 300 taken along line MM. FIG. 23 is a cross-sectional view of shoe 300 taken along line NN. A shoe 300 according to the second modification differs from the shoe 100 according to the embodiment in the configuration of a first support member 332 and a second support member 334, and the other configurations are the same. Therefore, the configuration of the first and second support members 332 and 334 will be mainly described.

The first support member 332 of this modification differs from the first support member 32 of the embodiment in that it does not have a distal end portion 32h but has a folded portion 332p and an outer leg side base end portion 332n. has the same configuration. The first support member 332 is a member that extends from an inner leg-side base end portion 332j on the lower side of the inner leg to an outer leg-side base end portion 332n on the lower side of the outer leg, and a folded portion 332p is formed in the middle. The folded portion 332p passes through the through hole 28h provided in the second formation portion 28 from the bottom to the top and protrudes to the upper surface of the second formation portion 28. As shown in FIG. A first lacing structure 332g is provided on the folded portion 332p.

The inner foot side base end portion 332j corresponds to the base end portion 32j, and is fixed between the upper 20 and the insole 14 on the inner foot side in the example of FIG. The outer leg side base end portion 332n is fixed between the upper 20 and the insole 14 on the outer leg side in the example of FIG. The outer foot side base end 332n may be fixed to the lower part of the outsole 12, the insole 14, or the upper 20, or may be fixed between them.

In addition, the first support member 32 of the embodiment and the first support member 332 of the present modification have one end (base end 32j, inner leg side base end 332j) on the inner leg side, and the upper 20 and the insole 14, etc., and the other end (tip part 32h, outer foot side base end part 332n) is fixed on the outer foot side between the second forming part 28 or the upper 20 and the insole 14, etc. there is In other words, it can be said that they have a common technical idea in that both ends of the support member are fixed to either end.

As shown in FIG. 21, a front-rear width varying portion 332m whose front-rear width gradually increases downward is provided in the vicinity of the outer leg-side base end portion 332n of the first support member 332. As shown in FIG.

The folded portion 332p may be fixed to the second forming portion 28, but is not fixed in this example. Therefore, by tightening the shoelace 60, the position of the folded portion 332p of the first support member 332 changes.

A second support member 334 of this modification differs from the second support member 34 of the embodiment in that it does not have a distal end portion 34h but has a folded portion 334p and an inner leg side proximal end portion 334n. has the same configuration. The second support member 334 is a member that extends from an outer leg-side proximal end portion 334j on the lower side of the outer leg to an inner leg-side proximal end portion 334n on the lower side of the inner leg, and a folded portion 334p is formed in the middle. The folded portion 334p passes through the through hole 26h provided in the first formation portion 26 from the bottom to the top and protrudes to the upper surface of the first formation portion 26. As shown in FIG. A second lacing structure 334g is provided on the folded portion 334p.

The outer foot side base end portion 334j corresponds to the base end portion 34j, and is fixed between the upper 20 and the insole 14 on the inner foot side in the example of FIG. The inner foot side proximal end portion 334n is fixed between the upper 20 and the insole 14 on the outer foot side in the example of FIG. The inner foot side base end 334n may be fixed to the lower portion of the outsole 12, the insole 14, or the upper 20, or may be fixed between them.

It should be noted that the second support member 34 of the embodiment and the second support member 334 of this modified example have one end (base end portion 34j, outer leg side base end portion 334j) on the outer leg side and the upper 20 and the insole 14, etc., and the other end (the distal end portion 34h, the inner foot side base end portion 334n) is fixed between the first forming portion 26 or the upper 20 and the insole 14 on the inner foot side. there is In other words, it can be said that they have a common technical idea in that both ends of the support member are fixed to either end.

As shown in FIG. 21, a front-rear width changing portion 334m whose front-rear width gradually increases downward is provided in the vicinity of the inner leg side proximal end portion 334n of the second support member 334. As shown in FIG.

The folded portion 334p may be fixed to the first forming portion 26, but is not fixed in this example. Therefore, by tightening the shoelace 60, the position of the folded portion 334p of the second support member 334 changes.

The second modification has the same functions and effects as the above-described embodiment. In addition, the first support member 332 and the second support member 334, which are spaced apart in the front-rear direction, support the inner leg and the outer leg, respectively, thereby providing more appropriate support force along the shape of the foot. can.

[Third modification]
A configuration of a shoe 400 according to a third modified example will be described. FIG. 24 is a plan view schematically showing a shoe 400 according to a third modification, and corresponds to FIG. FIG. 25 is a cross-sectional view of shoe 400 taken along line PP. A shoe 400 according to the third modification differs from the shoe 100 according to the embodiment in the configuration of both side support members 432, and the other configurations are the same. That is, the shoe 400 has both side support members 432 instead of the first and second support members. Therefore, the configuration of both side support members 432 will be mainly described.

Unlike the first support member 32 of the embodiment, the both-sides support member 432 of this modified example does not have the distal end portion 32h, the first and second folded portions 432p and 432q, the inner leg side base end portion 432j and the It differs in that it has an outer leg side base end portion 432n, and the other configurations are the same. The both-sides support member 432 is a member that extends from an inner foot-side base end portion 432j on the lower side of the inner foot to an outer foot-side base end portion 432n on the lower side of the outer foot, and has first and second folded portions 432p and 432q formed along the way. be. The first folded portion 432p is provided on the side opposite to the outer leg side proximal end portion 432n of the second folded portion 432q. provided on the opposite side.

The first folded portion 432p passes through the through hole 26h provided in the first formation portion 26 from the bottom to the top and protrudes to the upper surface of the first formation portion 26. As shown in FIG. A first lacing structure 432g is provided on the first folded portion 432p. The second folded portion 432q passes through the through hole 28h provided in the second forming portion 28 from the bottom to the top and protrudes to the upper surface of the second forming portion 28. As shown in FIG. A second lacing structure 432k is provided on the second folded portion 432q.

The inner foot side base end portion 432j and the outer foot side base end portion 432n may be fixed to the outsole 12, the insole 14, or the lower portion of the upper 20, or may be fixed between them. In the example of FIG. 25, the inner foot side base end portion 432j is fixed between the upper 20 and the insole 14 on the inner foot side, and the outer foot side base end portion 432n is fixed between the upper 20 and the insole 14 on the outer foot side. is fixed between

In the example of FIG. 24 , the through hole 26 h and the through hole 28 h are arranged in the first forming portion 26 and the second forming portion 28 in front of the frontmost one of the plurality of lacing portions 62 . Therefore, the first and second folded portions 432p, 432q and the first and second lacing structures 432g, 432k are arranged in front of the plurality of lacing portions 62. As shown in FIG. The shoelace 60 passes continuously through the first and second lacing structures 432g, 432k.

The first support member 32 of the embodiment and the both-sides support member 432 of this modified example have one end (the proximal end 32j, the inner leg side proximal end 432j) that is located on the inner leg side and is connected to the upper 20. It is fixed between the insoles 14 or the like, and the other end (the distal end portion 32h, the outer foot side base end portion 432n) is fixed between the second forming portion 28 or the upper 20 and the insole 14 or the like on the outer foot side. . In other words, it can be said that they have a common technical idea in that both ends of the support member are fixed to either end.

As shown in FIG. 24, a front-rear width changing portion 432s whose front-rear width gradually increases downward is provided in the vicinity of the inner foot-side base end portion 432j and the outer foot-side base end portion 432n of the both support members 432. It is

The first and second folded portions 432p, 432q may be fixed to the first and second forming portions 26, 28, but are not fixed in this example. Therefore, by tightening the shoelace 60, the positions of the first and second folded portions 432p and 432q of the both side support members 432 are changed.

The third modified example has the same functions and effects as the above-described embodiment. In addition, since the two-sided support member 432 supports the inner leg and the outer leg as an alternative to the first support member and the second support member, it is possible to provide more appropriate support force along the shape of the foot.

[Other Modifications]
In the description of the embodiment, an example in which the support member is provided inside the upper 20 has been shown, but the support member may be provided outside the upper 20 . In this case, the support member indirectly abuts the inner leg and the outer leg.

In the description of the embodiment, an example in which the lacing portion 62 is a through hole is shown, but the present invention is not limited to this, and various structures can be adopted for the lacing portion. For example, the lacing part may be an eyelet made of metal or resin, or a hook made of metal or resin.

In the description of the embodiment, an example in which the lacing structures 32g and 34g are formed by folding back the tips of the support members has been shown, but the present invention is not limited to this, and various structures can be adopted for the lacing structures. . For example, the lacing structure may be eyelets made of metal or resin, upper and lower through holes, or hooks made of metal or resin.

In the description of the embodiment, an example in which the support members are integrally formed from the proximal end portions 32j, 34j to the distal end portions 32h, 34h is shown, but the present invention is not limited to this, and the support members are formed separately. A plurality of members may be connected together. In addition, the inner and outer portions of the forming portions 26 and 28 of the support member may not be connected, and the inner and outer portions may be separately fixed to the upper 20 .

In the description of the embodiment, an example in which the rigidity reduction portion 36 is provided on the second support member 34 was shown, but the rigidity reduction portion 36 may be provided on the first support member 32, It may be provided on both the support members 32 and 34 . In this case, the rigidity reduction portions 36 of the first and second support members 32 and 34 may have different shapes and configurations.

Each of the modifications described above has the same functions and effects as the above-described embodiment.

Any combination of the above-described embodiments and modifications is also useful as embodiments of the present invention. A new embodiment resulting from the combination has the effects of each of the combined embodiments and modifications.

INDUSTRIAL APPLICABILITY The present invention relates to shoes and can be used in shoes.

10 Sole 20 Upper 20a Internal space 20c Central opening 20d Foot insertion part 22 Inner foot part 24 Outer foot part 26 First formation part 26s Reinforcement structure 28 Second formation part 30e Low stretchable part 32 first support member 32f fixing part 32g lacing structure 32h distal end 32j base end 32k deformation suppressing structure 32m front-rear width changing part 34 second support member 34f fixing part 34g lacing structure .

Claims (11)

a first forming portion provided on the inner leg side and a second forming portion provided on the outer leg side across a central opening formed forward from the foot insertion portion of the upper;
a first support member having a distal end portion fixed to the second forming portion and extending downward so as to contact the inner leg;
a second support member having a distal end portion fixed to the first forming portion and extending downward so as to abut on the outer leg;
A shoe comprising: 2. The shoe of claim 1, wherein said first and second support members comprise strips. 3. The shoe according to claim 1 or 2, wherein a longitudinal intermediate region of at least one of said first and second support members is provided with a rigidity reduction portion having a lower rigidity than surroundings. 4. The shoe according to claim 3, wherein the stiffness reduction portion includes a cutout portion or a flexible portion that is softer than its surroundings. The shoe according to any one of claims 1 to 4, wherein each of the first and second support members has a front-rear width changing portion whose front-rear width gradually increases downward. 6. The shoe according to any one of claims 1 to 5, wherein the lower regions of the first and second support members have different elasticity. 7. The shoe according to any one of claims 1 to 6, wherein the first and second support members are made of a material having higher flexibility than the material of the upper. 2. The shoe includes a tongue that covers the central opening of the upper, the tongue having a protrusion that protrudes in the width direction and extends downward inside the first and second support members. 8. The shoe according to any one of 7. 9. The shoe according to claim 8, wherein base ends of said first and second support members are arranged above a lower end of said protrusion. 10. The shoe according to claim 8 or 9, wherein an upper surface of said shoe tongue is provided with a position regulating portion for regulating positions of said first and second support members. A first lacing structure for the shoelace to pass is provided on the distal end side of the first support member, and the first support member has the second formation on the distal end side of the first lacing structure. fixed to the part,
A second lacing structure for the shoelace to pass is provided on the distal end side of the second support member, and the second support member has the first lacing structure on the distal end side of the second lacing structure. 11. A shoe according to any one of claims 1 to 10, characterized in that it is fixed to a part.

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