CN114025636A

CN114025636A - Shoes with air-permeable layer

Info

Publication number: CN114025636A
Application number: CN201980097678.7A
Authority: CN
Inventors: 若杉晋作; 仲谷舞; 谷口宪彦
Original assignee: Asics Corp
Current assignee: Asics Corp
Priority date: 2019-06-24
Filing date: 2019-06-24
Publication date: 2022-02-08
Also published as: JPWO2020261319A1; JP2023165761A; WO2020261319A1; JP7397871B2; US20220354217A1

Abstract

The shoe 100 includes: a sole 10; an upper 20 provided above the sole 10 and surrounding the foot insertion portion 20 a; and a cushioning member 30 housed in the foot insertion portion 20 a. The lower surface 30b of the cushioning member 30 is provided with a convex portion 32 that protrudes toward the facing surface 16 side facing the lower surface 30b, a concave portion 34 that is adjacent to the convex portion 32 and is recessed toward the upper 20 side than the convex portion 32, and a peripheral edge convex portion 36 that protrudes toward the facing surface 16 side than the convex portion 32 around the concave portion 34. When the shock-absorbing member 30 is subjected to the first predetermined load F, the peripheral edge convex portion 36 contacts the facing surface 16, and the convex portion 32 does not contact the facing surface 16, and when the shock-absorbing member 30 is subjected to the second predetermined load F larger than the first load F1, the peripheral edge convex portion 36 and the convex portion 32 contact the facing surface 16.

Description

Shoes with air-permeable layer

Technical Field

The invention relates to a pair of shoes.

Background

Shoes are known in which a cushioning member such as a midsole (midsole) is provided between an upper and a sole. For example, patent document 1 describes a footwear having a removable outsole, midsole, and upper. The lower surface of the midsole of the footwear has a plurality of protrusions that are fitted into pockets (pockets) of the outsole. The projections are separated by slots (slots) in such a way as to engage with raised walls provided on the bag. The footwear is configured such that a midsole or the like is replaceable and customized for each user (customize).

Documents of the prior art

Patent document

Patent document 1: specification of U.S. Pat. No. 9737109

Patent document 2: international publication No. 2014/115284

Patent document 3: japanese patent laid-open No. 2012-501717

Patent document 4: U.S. patent application publication No. 2017/0303631 specification

Patent document 5: U.S. patent application publication No. 2017/0251761 specification

Patent document 6: U.S. patent application publication No. 2018/0192737 specification

Disclosure of Invention

Problems to be solved by the invention

The present inventors have obtained the following recognition regarding shoes having cushioning members.

In order to ensure comfort by improving the feel of the foot when the foot is inserted into the shoe, it is preferable to make the cushioning member soft and increase the displacement of the cushioning member against a load (hereinafter, simply referred to as "load") received from the foot. However, if the displacement of the cushioning member against a load is increased, the change in the position of the foot of the shoe during a high load such as running becomes large, and the stability and the fit are degraded.

Further, when the displacement of the cushioning member against a load is reduced in order to improve the stability under a high load, the foot feel of the cushioning member is deteriorated, which is disadvantageous from the viewpoint of comfort.

The footwear described in patent document 1 is configured to be replaceable so as to ensure comfort according to the preference of the user, but different characteristics cannot be obtained from a single midsole. From these circumstances, the present inventors have recognized that conventional footwear has room for improvement in terms of both comfort and stability in a well-balanced manner.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a shoe which can achieve both comfort and stability in a well-balanced manner.

Means for solving the problems

In order to solve the above problem, a shoe according to an aspect of the present invention includes: a sole; a vamp arranged above the sole and surrounding the foot insertion part; and a buffer member accommodated in the foot insertion portion. The lower surface of the cushioning member is provided with a convex portion protruding toward the opposite surface side facing the lower surface, a concave portion adjacent to the convex portion and recessed toward the upper side than the convex portion, and a peripheral edge convex portion protruding toward the opposite surface side than the convex portion around the concave portion.

In addition, any combination of the above or inventions in which the constituent elements or expressions of the present invention are replaced with each other in a method, an apparatus, a program, a temporary or non-temporary storage medium in which a program is recorded, a system, or the like are also effective as aspects of the present invention.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, a shoe that can balance both comfort and stability can be provided.

Drawings

Fig. 1 is a plan view schematically illustrating a shoe according to a first embodiment of the present invention.

Fig. 2 is a plan view illustrating a cushioning member of the footwear of fig. 1.

Fig. 3 is a side view showing the shock-absorbing member of fig. 2.

Fig. 4 is a bottom view showing the shock-absorbing member of fig. 2.

Fig. 5 is a graph showing a relationship between a load and a displacement of the shock-absorbing member shown in fig. 2.

FIG. 6 is a longitudinal cross-sectional view of the cushioning member of FIG. 2 along line A-A.

FIG. 7 is another longitudinal cross-sectional view of the cushioning member of FIG. 2, taken along line A-A.

Fig. 8 is a plan view showing the contours of the cushioning member and the upper of fig. 2.

Fig. 9 is a plan view showing a change in the profile of the shock-absorbing member of fig. 2.

Fig. 10 is another graph showing a relationship between a load and a displacement of the shock-absorbing member shown in fig. 2.

Fig. 11 is a sectional view of a line a-a of the cushioning member including the deformation restricting portion.

Fig. 12 is a sectional view taken along line a-a of a cushioning member including another deformation restricting portion.

Fig. 13 is a sectional view taken along line a-a of a cushioning member having a width different between the inner leg side and the outer leg side of the main body.

Fig. 14 is a sectional view taken along line a-a of a cushioning member having a different coefficient of friction between the inner leg side and the outer leg side of the body portion.

Fig. 15 is a perspective view schematically showing a shoe according to a second embodiment of the present invention.

Figure 16 is a side view of the footwear of figure 15.

Figure 17 is a plan view illustrating the footwear of figure 15.

Figure 18 is a cross-sectional view of the footwear of figure 15 taken along line B-B.

Fig. 19 is a side view showing another example of the shape of the interlocking member of the shoe of fig. 15.

Fig. 20 is a side view showing another example of the shape of the interlocking member of the shoe of fig. 15.

Fig. 21 is a plan view showing a shock-absorbing member according to a first modification.

Fig. 22 is a plan view showing a first example of the shape of a shock-absorbing member according to a modification.

Fig. 23 is a plan view showing a second example of the shape of a shock-absorbing member according to a modification.

Fig. 24 is a plan view showing a third example of the shape of a shock-absorbing member according to a modification.

Fig. 25 is a plan view showing a fourth example of the shape of a shock-absorbing member according to a modification.

Fig. 26 is a longitudinal sectional view of a shock-absorbing member according to a modification along line a-a.

Figure 27 is another longitudinal cross-sectional view of the cushioning member of figure 26, taken along line a-a.

Fig. 28 is a sectional view of the shoe according to the modified example taken along line B-B.

Detailed Description

Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings. In the embodiment and the modifications, the same or equivalent constituent elements and members are denoted by the same reference numerals, and overlapping descriptions are omitted as appropriate. The dimensions of the components in the drawings are appropriately enlarged or reduced for easy understanding. In each drawing, a part of a member which is not important in describing the embodiment is omitted.

Moreover, the terms first, second, etc. are used for describing various structural elements, but the terms are only used for distinguishing one structural element from other structural elements, and the structural elements are not limited by the terms.

[ first embodiment ]

Hereinafter, the structure of the shoe 100 according to the first embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a plan view schematically showing a shoe 100 according to a first embodiment. In the following drawings including fig. 1, a right shoe is shown unless otherwise specified, but the description of the present specification can be applied to a left shoe as well. Note that the description of the shoelace (shoelace) is omitted in the following drawings.

The shoe 100 of the present embodiment can be used, for example, as a shoe for walking or walking, a safety shoe, a shoe for sports such as tennis and basketball, and the use thereof is not limited. Footwear 100 has a sole 10, an upper 20, and a cushioning member 30. The sole 10 is a part for interfacing with the ground. Upper 20 has a foot insertion portion 20a, and this foot insertion portion 20a surrounds an interior space for receiving a foot. Upper 20 is secured to the upper of sole 10 by adhesive or the like. The cushioning member 30 is housed in the foot insertion portion 20 a. These will be described in detail below.

(shoe uppers)

As shown in fig. 1, a direction along the widthwise centerline La of the upper 20 is referred to as a "front-rear direction". Therefore, the width direction is orthogonal to the center line La. The direction toward the toe side along the center line La is referred to as "front side" and "front side", and the opposite side is referred to as "rear side" and "rear side". The direction from the lateral side to the medial side in the width direction is referred to as "medial" and "medial", and the opposite direction is referred to as "lateral" and "lateral". The upper side of the shoe 100 in a state of being placed on a horizontal plane (hereinafter referred to as "horizontal state") is referred to as "upper side" and "upper side", and the opposite side thereof is referred to as "lower side" and "lower side". The direction along the vertical direction in the horizontal state is referred to as the "vertical direction".

In addition, in the upper 20, a portion corresponding to the midfoot in the front-rear direction is referred to as a midfoot portion. In the upper 20, a portion located more forward than the midfoot portion in the front-rear direction is referred to as a forefoot portion, and a portion located more rearward than the midfoot portion is referred to as a hindfoot portion. The forefoot portion is the portion generally corresponding to the phalanges and the hindfoot portion is the portion generally corresponding to the calcaneus. The midfoot portion is a region approximately 30% to 80% from the top end in a range parallel to a straight line orthogonal to centerline La when the longitudinal length of footwear 100 is 100%. Similarly, the forefoot portion is an area approximately 0% to 30% from the apex, and the rearfoot portion is an area approximately 80% to 100% from the apex.

A wearing hole 20b for inserting a foot is provided on the rear side of the upper 20. A central opening 20c is provided forward from the wearing opening 20b of the upper 20. A grommet (eyelet)20h for passing a shoelace therethrough is provided at an edge of the central opening portion 20c of the shoe upper 20. A tongue 70 is provided inside the central opening portion 20 c. The central opening 20c is not necessarily required, and the upper 20 may have a so-called sock (sock) structure. Moreover, the rivet hole 20h and tongue 70 are not required.

(buffer Member)

The cushioning member 30 will be explained. The cushioning member 30 is made of a material having flexibility, and is interposed between the foot and the sole 10 when the wearer wears the shoe 100, to alleviate impact applied to the foot. The cushioning member 30 functions as an insole (insole). Fig. 2 is a plan view of cushioning member 30. Fig. 3 is a side view of cushioning member 30. Fig. 4 is a bottom view of cushioning member 30.

The present inventors have studied the cushioning member 30 from the viewpoint of having both comfort and stability in a good balance, and have obtained the following findings. Fig. 5 is a graph showing a relationship between the load and the displacement of the shock-absorbing member 30. In this graph, the horizontal axis represents the displacement D, and the vertical axis represents the load F. The scale on the horizontal axis and the vertical axis indicates a relative level to a predetermined reference value. Curves g1 and g2 show a load F (hereinafter referred to as "displacement slope") with respect to the displacement D. Curve g1 shows the softer case with a displacement slope greater than curve g2, and curve g2 shows the stiffer case with a displacement slope less than curve g 1.

In order to improve the feel of the foot when the foot is inserted, it is desirable that the displacement slope be large and soft as in the curve g 1. However, when the displacement gradient is large, the displacement D becomes excessive under a high load such as walking, and the stability and durability are deteriorated. Therefore, when a load is applied at a high level, it is desirable that the displacement slope be small and rigid as in the curve g 2. From these circumstances, the inventors have conceived a configuration in which the displacement gradient is changed in accordance with the magnitude of the load F received by the shock-absorbing member 30 (see the curve g 3). It is found that when the load F is large, the contact area between the cushioning member 30 and the facing surface 16 facing the lower surface thereof is increased, and the displacement gradient changes. Hereinafter, a configuration example for realizing the characteristic shown by the curve g3 will be described.

Returning to fig. 2-4. As shown in fig. 2 and 3, edge raised

portions

30h and 30j are provided on an upper surface 30e of the cushioning member 30. The

edge ridge portions

30h and 30j rise from the upper surface 30e from the medial side to the lateral side so as to surround the periphery of the heel. The top line (top line) of the inner leg side edge rising portion 30h is set at a position higher than the top line of the outer leg side edge rising portion 30 j. The top line of the edge raised part 30j may be set higher than the top line of the edge raised part 30 h.

As shown in fig. 4, on the lower surface 30b of the cushioning member 30, a convex portion 32, a concave portion 34, and a peripheral edge convex portion 36 are provided. The convex portion 32 protrudes toward the facing surface 16 side facing the lower surface 30 b. In the present embodiment, the facing surface 16 is exemplified by the upper surface 10b of the sole 10. The facing surface 16 in the case where a shoe pad such as an insole is interposed between the shoe sole 10 and the cushioning member 30 is the upper surface of the shoe pad.

The arrangement of the convex portion 32 is not limited, and the convex portion 32 of the present embodiment is arranged at a position corresponding to the heel. The shape of the convex portion 32 is not limited, and the convex portion 32 of the present embodiment is an island-shaped portion having an elliptical planar shape whose front-rear dimension is larger than its width dimension. In addition, the oval shape in the present specification includes a shape similar to the oval shape such as an oblong shape in addition to the oval shape. The concave portion 34 is formed adjacent to the convex portion 32, and is a portion recessed toward the upper 20 side than the convex portion 32. The concave portion 34 is interposed between the convex portion 32 and the peripheral convex portion 36 in the width direction. The concave portion 34 of the present embodiment is formed in a circumferential shape surrounding the convex portion 32 when viewed in plan. The peripheral edge convex portion 36 protrudes to the facing surface 16 side than the convex portion 32 around the concave portion 34.

In the present embodiment, in order to change the displacement gradient, the contact area between the cushioning member 30 and the facing surface 16 (upper surface 10b) is changed in accordance with the load F. Specifically, when the shock-absorbing member 30 receives a predetermined first load F1 (low load), the peripheral edge convex portion 36 contacts the facing surface 16, and the convex portion 32 does not contact the facing surface 16, and when the shock-absorbing member 30 receives a predetermined second load F2 (high load), the peripheral edge convex portion 36 and the convex portion 32 contact the facing surface 16. When the convex portion 32 contacts the facing surface 16, the contact area increases accordingly, the load F per unit area decreases, and the displacement gradient changes.

For example, the first load F1 may be set based on the load F received by the cushioning member 30 from the foot when the foot is inserted or when walking slowly, and the second load F2 may be set based on the load F received by the cushioning member 30 from the foot when walking. The second weight F2 is larger than the first weight F1.

Reference is also made to fig. 6, 7. Fig. 6 and 7 are longitudinal sectional views of the shock-absorbing member 30 taken along the line a-a, and show cross sections of the front-rear direction center of the convex portion 32. Fig. 6 shows a state in which the shock-absorbing member 30 receives the first load F1, and fig. 7 shows a state in which the shock-absorbing member 30 receives the second load F2. In the present embodiment, the cushioning member 30 is not adhered to the facing surface 16, and is movable in the foot insertion portion 20 a. Therefore, the shock-absorbing member 30 deforms in the width direction when receiving the load F, and increases in size in the width direction.

In the case of a low load shown in fig. 6, the peripheral edge convex portion 36 contacts the facing surface 16, and the lower surface 32d of the convex portion 32 is spaced upward from the facing surface 16 by the gap S32. When the load F increases from the state shown in fig. 6, the peripheral edge convex portion 36 is deformed so as to expand in the width direction while being in contact with the facing surface 16. At the same time, the protrusion 32 moves downward, the gap S32 gradually decreases according to the load F, and the gap S32 disappears when the load F exceeds the threshold value. At this time, the lower surface 32d of the projection 32 comes into contact with the facing surface 16, and the projection 32 deforms so as to collapse in the vertical direction. When the load F is further increased, the contact area between the lower surface of the projection 32 and the facing surface 16 increases, and the state shown in fig. 7 is achieved. That is, in the case of the high load shown in fig. 7, the contact area of the cushioning member 30 with the facing surface 16 increases, the load F per unit area decreases, and the displacement gradient decreases, as compared with the case of the low load shown in fig. 6.

If the front-rear dimension of the convex portion 32 is small, the front-rear range in which the displacement gradient changes can be narrowed. Therefore, the front-rear dimension of the projection 32 is preferably large. Therefore, the convex portion 32 of the present embodiment has an elliptical planar shape having a front-rear dimension larger than a width dimension.

Further, the peripheral edge convex portion 36 may not contact the facing surface 16 in a non-load state where the foot is not inserted, but the present embodiment is configured such that the peripheral edge convex portion 36 contacts the facing surface 16 also in a non-load state.

It is desirable that the projection 32 be smoothly movable downward from a low-load state to a high-load state. Therefore, the cushioning member 30 of the present embodiment has the main body portion 35 including the peripheral edge projection 36, and the movable portion 33 including the projection 32. By separating the main body 35 from the movable portion 33, the movement of the projection 32 can be facilitated.

The main body 35 has an outer shape along the foot insertion portion 20a when viewed in plan view (see also fig. 2 and 3). A housing portion 37 for housing at least a part of the movable portion 33 is provided at a widthwise intermediate portion of the main body portion 35. The housing portion 37 of the present embodiment has a shape capable of housing substantially the entire movable portion 33. The receiving portion 37 of this example has an elliptical planar shape with a front-rear dimension larger than a width dimension. In the present embodiment, the inner circumferential surface 37j of the housing portion 37 is formed in a tapered shape with its lower side narrowed in order to slow the movement of the movable portion 33. When a downward load F is applied to the cushioning member 30, the movable portion 33 slides in the accommodating portion 37 of the main body 35 and moves downward. The housing portion 37 has an opening 37h provided at the middle portion in the width direction of the main body 35.

The outer peripheral surface 33e of the movable portion 33 has a shape corresponding to the inner peripheral surface 37 j. That is, the outer peripheral surface 33e of the movable portion 33 has an elliptical planar shape having a front-rear dimension larger than a width dimension. The outer peripheral surface 33e of the movable portion 33 has an elliptical truncated cone shape along the inner peripheral surface 37 j. As shown in fig. 6, the movable portion 33 has a vertical dimension smaller than that of the peripheral edge projection 36, and has a size such that the outer peripheral surface 33e is caught in the middle of the receiving portion 37.

The planar shape of the cushioning member 30 will be explained. Fig. 8 is a plan view showing the relationship between peripheral wall surface 30p of cushioning member 30 and foot insertion portion 20a of upper 20. The peripheral wall surface 30p is a side surface along the outer periphery of the cushioning member 30. If the width of cushioning member 30 is too large, it becomes difficult to insert cushioning member 30 into upper 20. Therefore, the widthwise gap S1 between the peripheral wall surface 30p of the cushioning member 30 and the foot insertion portion 20a of the upper 20 is configured to be larger than the front-rear direction gap S2 between the cushioning member 30 and the upper 20. The gap S1 is the sum of the gaps S1(a) and S1(b) on both sides in the width direction, and the gap S2 is the sum of the gaps S2(a) and S2(b) on both sides in the front-rear direction.

The extension of the cushioning member 30 in the planar direction will be described. Fig. 9 is a plan view showing a plan view of the cushion member 30 when a load is applied. The figure shows the plan view without load in broken lines and the plan view with second load F2 in solid lines. In order to distribute the load F in the width direction, the cushioning member 30 of the present embodiment is configured such that the extension E1 in the width direction is larger than the extension E2 in the front-rear direction when receiving the load F. The elongation E1 is the sum of the elongations E1(a) and E1(b) on both sides in the width direction, and the elongation E2 is the sum of the elongations E2(a) and E2(b) on both sides in the front-rear direction.

Refer to fig. 6 and 7. The body portion 35 and the movable portion 33 may be formed of various materials having desired characteristics. For example, the main body 35 may be formed of foamed resin foam such as EVA resin (ethylene vinyl acetate copolymer) and TPU resin (thermoplastic polyurethane). The movable portion 33 may be formed of the same material as the main body portion 35 or may be formed of a different material. The main body 35 and the movable portion 33 may be formed of a single member or may be formed of a plurality of members. These may be separate bodies, or foam materials having different hardness such as GEL (GEL) material may be provided inside or on the surface thereof. In this case, the feeling of the foot or the cushioning property can be changed.

The hardness of the cushioning member 30 will be explained. The hardness of the material of the main body 35 may be the same as or different from that of the material of the movable portion 33. In the present embodiment, the hardness of the material of the movable portion 33 is higher than that of the material of the main body portion 35. The main body 35 is soft and therefore has a good feel to the foot when loaded at a low load, and the movable portion 33 is hard and therefore has high rigidity when loaded at a high load, and stability is easily ensured. In addition, when the movable portion 33 has a large area, the movable portion 33 may be formed to be more flexible than the main body portion 35 in order to obtain cushioning properties. Further, the main body portion 35 may be formed to be harder than the movable portion 33 in order to obtain desired characteristics.

The hardness of the material of the body portion 35 may be uniform as a whole or may be different depending on the portion. In particular, the main body 35 may have a different hardness between a portion 35e on the outer leg side and a portion 35j on the inner leg side from the movable portion 33. In the present embodiment, the hardness of the material of the inner leg side portion 35j is higher than that of the material of the outer leg side portion 35 e. The stability is easily ensured because deformation is suppressed when a high load is applied to the inner leg during exercise. In the case of a court (court) sports shoe for applying a load to the outside, for example, the portion 35e may be harder than the portion 35 j.

(deformation restricting part)

The deformation restricting portion 18 will be described with reference to fig. 10 to 12. When a high load is applied, if the cushioning member 30 is excessively deformed, stability may be lowered. Therefore, in the present embodiment, the deformation restricting portion 18 is provided to restrict the deformation of the cushioning member 30 by a predetermined amount or more.

Fig. 10 is a graph showing a relationship between the load F and the displacement D of the shock-absorbing member 30 in the case where the deformation restricting portion 18 is provided, and corresponds to fig. 5. In this figure, a curve g3 shows the case where the deformation restricting portion 18 is not provided, and a curve g4 shows the case where the deformation restricting portion 18 is provided. When the deformation restricting portion 18 is provided, the displacement D is suppressed and the displacement gradient further decreases when the third load F3 is exceeded. The third weight F3 is set to be larger than the second weight F2, and the displacement slope is changed in three stages according to the weight F. In this structure, stability in the region where the load F is equal to or greater than the third load F3 can be ensured. The third load F3 may be set based on the load F that cushioning member 30 receives from the foot, particularly during high intensity exercises.

The structure of the deformation restricting portion 18 is not limited. For example, the deformation restricting portion 18 may be provided in a portion facing the lower surface 30b or the peripheral wall surface 30p of the shock-absorbing member 30. Fig. 11 is a sectional view of the cushioning member 30 including the deformation restricting portion 18, taken along line a-a, corresponding to fig. 6. This figure shows a state in which the third load F3 is applied. In the example of fig. 11, the deformation restricting portion 18 includes a protruding portion 16p protruding from the facing surface 16, and an abutting portion 36m provided on the shock-absorbing member 30. The contact portion 36m in this example is an inner wall in the width direction of a lower surface concave portion 36d provided on the lower surface 30b of the shock-absorbing member 30 (the lower surface of the peripheral edge convex portion 36). When the shock-absorbing member 30 receives the third load F3, the contact portion 36m comes into contact with the protruding portion 16p, and the deformation of the peripheral edge protruding portion 36 in the width direction is restricted.

Fig. 12 is a sectional view of a line a-a of the cushioning member including another deformation restricting portion 18, corresponding to fig. 11. In the example of fig. 12, the abutting portion 36m is provided on the side surface of the peripheral edge convex portion 36 (the peripheral wall surface 30p of the shock-absorbing member 30), and the protruding portion 16p is disposed at a position deviated from the lower surface 30b of the shock-absorbing member 30 (the lower surface of the peripheral edge convex portion 36). When the shock-absorbing member 30 receives the third load F3, the abutting portion 36m provided on the side surface of the peripheral edge convex portion 36 abuts on the protruding portion 16p, and the deformation of the peripheral edge convex portion 36 in the width direction is restricted. In the examples of fig. 11 and 12, an example in which two projections 16p are provided is shown, but one or more projections 16p may be provided.

The deformation restricting portion 18 may be configured by increasing the friction coefficient μ of the lower surface 30b (the lower surface of the peripheral edge convex portion 36) of the shock-absorbing member 30 or the facing surface 16. For example, if the friction coefficient μ is increased, the movement of the peripheral edge convex portion 36 is restricted, and the deformation of the cushioning member 30 can be restricted.

The friction coefficient μ can be changed by changing the roughness or surface roughness of the lower surface of the peripheral edge convex portion 36. For example, the lower surface of the peripheral edge convex portion 36 may be subjected to mirror finishing, embossing, texturing, or the like in order to change the surface roughness. The friction coefficient μmay be changed by attaching a member having a different friction coefficient to the surface of the main body 35. In this case, the friction coefficient μ can be reduced when a low friction material is attached, and the friction coefficient μ can be increased when a high friction material is attached. The friction coefficient μmay be changed by applying a substance capable of changing the lubricity to the surface of the main body 35.

Refer to fig. 13. The width-directional dimension of the outer leg-side portion 35e in contact with the facing surface 16 and the width-directional dimension of the inner leg-side portion 35j in contact with the facing surface 16 may be the same or different. Fig. 13 is a sectional view of a line a-a of the cushioning member 30 having a width different between the inner leg side and the outer leg side of the main body portion 35, corresponding to fig. 6. When viewed in cross section in fig. 13, the dimension Wcj on the medial leg side of the body portion 35 is greater than the dimension Wce on the lateral leg side. In this example, since the dimension Wcj is larger than the dimension Wce, the contact area between the facing surface 16 and the peripheral edge protrusion 36 is increased, the frictional force is also increased, and the movement is not easily performed. As a result, the sinking of the inner side is restricted, and stability is easily ensured. In order to cope with the internal and external balance of the load during the high load, the dimension Wce may be larger than the dimension Wcj.

Refer to fig. 14. The friction coefficient μ between the body portion 35 and the facing surface 16 may be uniform as a whole or may be different from portion to portion. If the friction coefficient μ is locally increased, the movement and deformation of the portion can be reduced. Fig. 14 is a sectional view of a line a-a of the cushioning member 30 having a friction coefficient μ different between the inner leg side and the outer leg side of the body portion 35, corresponding to fig. 6.

In the example shown in fig. 14, the friction coefficient μ j between the inner leg side portion 35j and the facing surface 16 is higher than the friction coefficient μ e between the outer leg side portion 35e and the facing surface 16. In this case, when a high load is applied to the inner leg during exercise, the deformation is suppressed, and thus stability is easily ensured. In order to cope with the internal-external balance of the load during the high load, the friction coefficient μ e may be higher than the friction coefficient μ j.

The features of the shoe 100 of the first embodiment configured as described above will be described. The shoe 100 of the first embodiment includes: a sole 10; an upper 20 provided above the sole 10 and surrounding the foot insertion portion 20 a; and a cushioning member 30 housed in the foot insertion portion 20 a. The lower surface 30b of the cushioning member 30 is provided with a convex portion 32 that protrudes toward the facing surface 16 side facing the lower surface 30b, a concave portion 34 that is adjacent to the convex portion 32 and is recessed toward the upper 20 side than the convex portion 32, and a peripheral edge convex portion 36 that protrudes toward the facing surface 16 side than the convex portion 32 around the concave portion 34. When the shock-absorbing member 30 receives a predetermined first load F1, the peripheral edge convex portion 36 contacts the facing surface 16, and the convex portion 32 does not contact the facing surface 16, and when the shock-absorbing member 30 receives a predetermined second load F2 larger than the first load F1, the peripheral edge convex portion 36 and the convex portion 32 contact the facing surface 16.

According to this configuration, the displacement of the shock-absorbing member 30 with respect to a load can be increased when a low load is applied in which the projection 32 does not contact the facing surface 16, and therefore the foot feel is improved, and the displacement of the shock-absorbing member 30 with respect to a load can be decreased when a high load is applied in which the projection 32 contacts the facing surface 16, and therefore stability can be ensured.

The widthwise gap S1 between the peripheral wall surface 30p of the cushioning member 30 and the upper 20 is larger than the anteroposterior gap S2 between the peripheral wall surface 30p and the upper 20. At this time, the widthwise gap S1 is large, so that the shock-absorbing member 30 can be easily inserted into the foot insertion portion 20 a.

The concave portion 34 is interposed between the convex portion 32 and the peripheral edge convex portion 36 in the width direction, and the cushioning member 30 has a larger extension in the width direction than in the front-rear direction when it receives a downward load. In this case, since the load can be dispersed in the width direction when the load is applied, the stability and the comfort can be adjusted.

The deformation restricting portion 18 is provided to restrict deformation of the cushioning member 30 by a predetermined amount or more. At this time, excessive deformation can be restricted. Further stability under high load can be ensured by a multi-stage (three-stage) change.

The deformation restricting portion 18 is provided at a portion facing the lower surface 30b or the outer peripheral side surface of the shock-absorbing member 30. In this case, excessive deformation can be restricted by a simple structure.

The deformation restricting portion 18 includes a protruding portion 16p protruding from the facing surface 16. In this case, excessive deformation can be restricted by a simple structure.

The cushioning member 30 has a main body portion 35 including a peripheral edge projection 36 and a movable portion 33 including a projection 32, the main body portion 35 has an outer shape along the foot insertion portion 20a, and a receiving portion 37 for receiving at least a part of the movable portion 33 is provided, and the movable portion 33 moves downward relative to the main body portion 35 when a downward load is applied to the cushioning member 30. At this time, by making the movable portion 33 stand, the movable portion 33 can smoothly move downward when a load is applied. The separation can be performed under appropriate conditions.

The housing portion 37 includes an opening 37h provided at the middle portion in the width direction of the main body 35. At this time, the movable portion 33 can move downward in the opening 37h by including the opening 37 h.

The inner circumferential surface 37j of the housing portion 37 is tapered. In this case, by adjusting the taper shape, the displacement with respect to the load can be easily adjusted to a desired characteristic.

The outer peripheral surface of the movable portion 33 has a shape along the inner peripheral surface 37 j. At this time, the movable portion 33 can move smoothly.

The movable portion 33 is located at a position away upward from the facing surface 16 when the cushioning member 30 receives the first load F1. In this case, the foot feel at the time of foot insertion can be improved by increasing the displacement against the load at the time of low load.

The movable portion 33 has an elliptical planar shape with a front-rear dimension larger than a width dimension. In this case, since the front-rear dimension is large, the load-versus-displacement characteristics can be adjusted in a wide range in the front-rear direction.

The hardness of the material of the movable portion 33 is different from that of the material of the main portion 35. In this case, since the main body 35 and the movable portion 33 can be made of materials having appropriate hardness, desired load displacement characteristics can be easily realized.

The hardness of the material of the main body portion 35 is different between the inner leg side portion 35j and the outer leg side portion 35e across the movable portion 33 in the width direction. In this case, since the inner leg side portion and the outer leg side portion can be made of materials having appropriate hardness, desired load displacement characteristics can be easily realized.

The area of the main body 35 in contact with the facing surface 16 is different between the inner leg side portion 35j and the outer leg side portion 35e via the movable portion 33. In this case, since the areas of the first and second electrodes can be set according to the internal and external balance of the load under high load, the desired load displacement characteristics can be easily realized.

The main body 35 has a friction coefficient different from that of the facing surface 16 at a portion 35j on the inner leg side and a portion 35e on the outer leg side via the movable portion 33. In this case, since the deformation characteristics can be adjusted by setting the respective friction coefficients corresponding to the internal and external balance of the load under high load, the desired load displacement characteristics can be easily realized.

[ second embodiment ]

The structure of a shoe 200 according to a second embodiment of the present invention will be described with reference to fig. 15 to 20. In the drawings and the description of the second embodiment, the same or equivalent constituent elements and members as those of the first embodiment are denoted by the same reference numerals. Descriptions overlapping with the first embodiment will be omitted as appropriate, and the structure different from the first embodiment will be described with emphasis. Fig. 15 is a perspective view schematically showing a shoe 200 according to a second embodiment. Fig. 16 is a side view showing the shoe 200. Fig. 17 is a plan view showing the shoe 200. Fig. 18 is a sectional view taken along line B-B of fig. 17. In fig. 15 and 16, the tongue is not shown.

(linking member)

The shoe 200 of the present embodiment is different from the shoe 100 of the first embodiment in that it includes the interlocking member 52, and the other structures are the same. Therefore, the interlocking member 52 will be described with emphasis. When the cushioning member 30 is deformed by receiving the load F, the gap between the upper 20 and the instep may be enlarged and the fit may be reduced. Accordingly, the shoe 200 of the present embodiment includes: the interlocking member 52 deforms the upper 20 in interlocking with the deformation of the cushioning member 30 when the cushioning member receives the load F.

The interlocking member 52 of the present embodiment has a sole side portion 52d, an extending portion 52p, and a fixing portion 52 f. The sole side portion 52d is a portion that is interposed between the ball of the foot and the upper surface 30e of the cushioning member 30 and extends substantially in the width direction. The protruding portions 52p extend from both ends in the width direction of the upper surface 30e, and extend substantially in the vertical direction. The fixing portion 52f is a portion provided at the upper end of the extension portion 52p and fixed to the shoe upper 20. The fixing portion 52f is fixed to the upper 20 at regions on both sides across the central opening 20c in the width direction by sewing or the like. The fixing portion 52f may be integrally fixed to the upper 20 by the rivet hole 20 h. For example, the sole side portion 52d, the protruding portion 52p, and the fixing portion 52f are integrally formed of a flexible sheet such as cloth.

As shown in fig. 17, the interlocking member 52 of the present embodiment is provided at a position avoiding the wearing opening 20b of the upper 20. The extension portion 52p of the interlocking member 52 is fixed to the upper 20 via the fixing portion 52f on the front side of the wearing opening 20 b. At this time, the cushioning member 30 can be easily inserted into the foot insertion portion 20a from the wearing hole 20b or removed from the wearing hole 20 b.

As shown in fig. 18, the sole side portion 52d is disposed in contact with or close to the upper surface 30e of the shock-absorbing member 30, and when a load F is received from the sole, a downward tensile force T acts on the extension portion 52p and the upper surface 30e of the shock-absorbing member 30. When the tension T acts on the extending portion 52P, a downward force P acts on the fixing portion 52f and the shoe upper 20 in conjunction with this. As a result, the upper 20 is pulled downward, and the gap between the upper 20 and the instep is reduced from expanding. That is, the upper 20 and the interlocking member 52 sink together with the cushioning member 30 by the interlocking member 52 being interposed between the sole and the upper surface 30e of the cushioning member 30. According to the mechanisms described, upper 20 and cushioning member 30 fit the foot.

The interlocking member 52 may have a tubular portion or a bag-like portion that wraps the leg from the viewpoint of ensuring support. At this time, when cushioning members 30 are deformed, upper 20 is reliably pulled downward.

Fig. 19 and 20 are side views showing another example of the shape of the interlocking member 52. The interlocking member 52 of fig. 19 is different from the interlocking member 52 of fig. 16 in that it has a rear portion 52h extending rearward from the middle foot portion, and the other configurations are the same. The rear portion 52h may also extend to a region corresponding to the heel. The upper portion of the rear portion 52h is fixed to the inner side of the upper 20 by sewing or the like. In this example, the rear end portion of the rear portion 52h is formed in a cylindrical shape.

In the example of fig. 20, the interlocking member 52 is different from the interlocking member 52 of fig. 16 in that it has a front portion 52j extending forward from a middle leg portion, and the other structures are the same. The front portion 52j may also extend to a region corresponding to the toe. The front portion 52j may be formed in a bag shape or a tubular shape wrapping the front foot portion of the inserted foot. In this example, the front portion 52j is formed in a bag shape with the front thereof closed. The upper portion of forward portion 52j may also be secured to the medial side of upper 20, but is not secured in this example.

The shoe 200 of the present embodiment exhibits the same operational effects as those of the first embodiment, and pulls the upper 20 downward in conjunction with the deformation of the cushioning member 30, so that the gap between the upper 20 and the instep is not excessively expanded at the time of high load, and the fit is improved. Further, the comfort under low load can be maintained.

The above description explains an example of the embodiment of the present invention in detail. The embodiments described above are merely specific examples for carrying out the present invention. The contents of the embodiments do not limit the technical scope of the present invention, and various design changes such as modification, addition, deletion, and the like of the components may be made without departing from the scope of the invention defined by the claims. In the above-described embodiments, the description has been given with reference to the description such as "in the embodiments" and "in the embodiments" with respect to the content that can be subjected to such a design change, but it is not allowable to subject the content that is not subjected to such a description to a design change. The hatching attached to the drawings does not limit the material of the object to which the hatching is attached.

[ modified examples ]

Hereinafter, a modified example will be described. In the drawings and the description of the modified examples, the same or equivalent constituent elements and members as those of the embodiment are denoted by the same reference numerals. The description overlapping with the embodiment is appropriately omitted, and the structure different from the embodiment is mainly described.

[ first modification ]

In the description of the first embodiment, the example in which the shock-absorbing member 30 has the single movable portion 33 is shown, but the present invention is not limited to this. The shock-absorbing member 30 may have a plurality of movable portions 33. Fig. 21 is a plan view of a shock-absorbing member 30 according to a first modification, which corresponds to fig. 2. In the shock-absorbing member 30 of fig. 21, a plurality of movable portions 33 are provided so as to be separated in the front-rear direction. The cushioning member 30 of the present example is provided with movable portions 33 that are elliptical in plan view at a portion corresponding to the heel and a portion corresponding to the toe. The movable portion 33 is not limited to the above position, and may be disposed at a position where the load F is easily applied. In order to cope with the front-rear balance of the load under a high load, the movable portion 33 may be provided at any one of a portion corresponding to the heel and a portion corresponding to the toe.

Further, the dimension or deformation characteristics of the movable portion 33 may be adjusted in the front foot portion and the rear foot portion. In this case, for example, if the rear foot portion is easily deformed and the front foot portion is highly repelled, it is possible to provide a shoe suitable for a runner who lands on the heel by providing cushioning with the rear foot portion and repulsive force with the front foot portion during walking or the like. Further, by providing a plurality of movable portions 33, the size and deformation characteristics of the movable portions 33 can be changed in accordance with the landing pattern of the wearer.

[ other modifications ]

In the description of the first embodiment, the projection 16p is provided as the deformation restricting portion 18, but the present invention is not limited thereto. For example, instead of the protruding portion 16p, a sheet member that can increase the frictional force between the main body portion 35 and the movable portion 33 may be inserted therebetween. For example, a belt having a high friction coefficient may also be attached to the surface of one of these.

In the description of the first embodiment, the example in which the movable portion 33 has an elliptical planar shape is shown, but the present invention is not limited to this, and the movable portion 33 may have various shapes depending on the required characteristics. First to fourth shape examples of the movable portion 33 will be explained below. Fig. 22 to 25 are plan views showing first to fourth shape examples of the shock-absorbing member 30, and correspond to fig. 2. In the shock-absorbing member 30 of the first shape example shown in fig. 22, the movable portion 33 has a planar shape extending forward and backward from a portion corresponding to the heel to a portion corresponding to the midfoot. In this case, for example, if the portion corresponding to the heel is easily deformed and the midfoot portion is highly repulsive, it is possible to provide a shoe suitable for a runner who lands on the heel by providing cushioning with the portion corresponding to the heel and repulsive force with the midfoot portion during walking or the like. Further, by providing the movable portion 33 having such a shape, the size and deformation characteristics of the movable portion 33 can be changed in accordance with the landing pattern of the wearer.

In the shock-absorbing member 30 of the second example of the shape shown in fig. 23, the movable portion 33 has a planar shape extending forward and backward from a portion corresponding to the heel to a portion corresponding to the toe. In this way, the movable portion 33 can have various longitudinal lengths from a part of the buffer member 30 to the entire region, depending on the required characteristics. In the case of the movable portion 33 having the above shape, when comfort is regarded as important rather than movement, the movable portion 33 can be made soft and a shoe having a large deformation amount can be provided.

In the shock-absorbing member 30 of the third shape example shown in fig. 24, the movable portion 33 has a planar shape extending forward and backward from a portion corresponding to the heel to a portion corresponding to the midfoot. In this example, a portion corresponding to the midfoot portion of the movable portion 33 has a shape close to one side (for example, the lateral side) in the width direction. In the case of the movable portion 33 having such a shape, the movable portion 33 is made flexible and the main body portion 35 is made rigid, so that a shoe having a high inversion (promotion) suppressing effect can be provided.

In the shock-absorbing member 30 of the fourth example of the shape shown in fig. 25, the movable portion 33 has a planar shape of a polygonal shape. In this example, the movable portion 33 has a hexagonal planar shape extending from a portion corresponding to the midfoot portion to a portion corresponding to the toe. With the movable portion 33 having such a shape, characteristics suitable for a runner whose forefoot portion lands can be easily realized. Further, the corner portions may be curved, instead of polygonal.

In the description of the first embodiment, the convex portion 32 and the peripheral edge convex portion 36 are illustrated separately, but the present invention is not limited thereto. The projections 32 may be integral with the peripheral projections 36. Fig. 26 and 27 are vertical sectional views along the line a-a of the cushioning member 30 in which the convex portion 32 and the peripheral edge convex portion 36 are integrated, and correspond to fig. 6 and 7. Fig. 26 shows the shock-absorbing member 30 in a state without a load, and fig. 27 shows the shock-absorbing member 30 in a state in which the second load F2 is applied.

As shown in fig. 26, the cross-sectional profile of the facing surface 16 side of the convex portion 32 sandwiched by the concave portions 34 is substantially M-shaped. The peripheral projection 36 contacts the facing surface 16 at two or more points with the projection 32 interposed therebetween. In the cross-sectional view of fig. 26, the sum of the dimensions of the regions of the peripheral edge convex portions 36 that are in contact with the facing surface 16 in the no-load state is 30% or more of the overall width dimension Wa of the cushioning member 30. That is, the sum of the width-directional dimension Wce of the region in contact with the facing surface 16 on the outer leg side of the peripheral edge convex portion 36 and the width-directional dimension Wcj of the region in contact with the facing surface 16 on the inner leg side may be 30% or more of the width dimension Wa. The sum of the dimension Wce and the dimension Wcj may be 70% or less of the width dimension Wa.

Further, in the projection 32, a vertical distance Hp between a portion 32p closest to the facing surface 16 in the vertical direction and the facing surface 16 may be 2mm or more in a state where no load is applied, as viewed in the cross section of fig. 26. The vertical distance Hp may be 10mm or less.

Further, in the recess 34, the vertical distance Hd between the portion 34d and the portion 32p which are farthest from the facing surface 16 in the vertical direction may be 1mm or more in a state where no load is applied, as viewed in the cross section of fig. 26. The vertical distance Hd may be 13mm or less.

Further, when viewed in cross section in fig. 26, the vertical thickness Ha of the cushioning member 30 on a vertical line passing through the portion 32p may be 10mm or more in a state where no load is applied. The vertical thickness Ha may be 30mm or less.

As shown in fig. 27, in a state where the cushioning member 30 receives the second load F2, the convex portion 32 contacts the facing surface 16, as in the first embodiment.

In the description of the second embodiment, the sole side portion 52d is interposed between the ball of the foot and the upper surface 30e of the cushioning member 30, but the present invention is not limited to this. Fig. 28 is a sectional view of a modified example of the shoe 300 taken along line B-B, which corresponds to fig. 18. This modification is different from the second embodiment in that the sole side portion 52d is interposed between the cushioning member 30 and the sole 10, and the other configurations are the same. In this modification, the protruding portions 52p protrude from both ends in the width direction of the sole side portion 52 d. According to this modification, as in the second embodiment, the upper 20 and the interlocking member 52 sink together with the cushioning member 30, and therefore the upper 20 and the cushioning member 30 are fitted to the foot.

The above-described modifications exhibit the same operation and effect as those of the above-described embodiment.

Any combination of the above-described embodiment and the modification is also useful as an embodiment of the present invention. The new embodiment resulting from the combination has the effects of the respective embodiments and the modifications to be combined.

Industrial applicability

The present invention may be used in connection with footwear cushioning members.

Description of the symbols

10: sole of shoe

16: facing surface

18: deformation restricting part

20: shoe upper

20 a: foot insertion part

30: buffer member

30 b: lower surface

30 e: upper surface of

30 p: peripheral wall surface

32: convex part

32 d: lower surface

S32: gap

33: movable part

33 e: peripheral surface

34: concave part

35: body part

36: peripheral convex part

36 d: lower surface concave part

36 m: abutting part

37: containing part

37 h: opening part

37 j: inner peripheral surface

52: linkage component

52 d: sole side part

52 p: extension part

100. 200: shoes with air-permeable layer

Claims

1. A shoe, characterized by comprising:

a sole;

an upper disposed above the sole and surrounding the foot insertion portion; and

a cushioning member housed in the foot insertion portion,

a convex portion protruding toward an opposite surface side facing the lower surface, a concave portion adjacent to the convex portion and recessed toward the shoe surface side from the convex portion, and a peripheral convex portion protruding toward the opposite surface side from the convex portion around the concave portion are provided on the lower surface of the cushioning member,

when the cushioning member receives a predetermined first load, the peripheral edge projection contacts the facing surface, and the projection does not contact the facing surface,

when the cushioning member receives a predetermined second load larger than the first load, the peripheral edge protrusion and the protrusion contact the facing surfaces.

2. Shoe according to claim 1,

a widthwise gap between the peripheral wall surface of the cushioning member and the upper is larger than a front-rear gap between the peripheral wall surface and the upper.

3. Shoe according to claim 1 or 2,

the concave portion is interposed between the convex portion and the peripheral convex portion in the width direction,

the cushioning member has a greater width-directional elongation than a front-rear-directional elongation when subjected to a downward load.

4. Shoe according to any of claims 1 to 3, characterized in that it is provided with:

and a deformation restricting unit for restricting deformation of the cushioning member by a predetermined amount or more.

5. Shoe according to claim 4,

the deformation restricting portion is provided at a portion facing the lower surface or the outer peripheral side surface of the cushioning member.

6. Footwear according to claim 5,

the deformation restricting portion includes a protruding portion protruding from the facing surface.

7. Shoe according to any of claims 1 to 6,

the cushioning member has a main body portion including the peripheral edge projection, and a movable portion including the projection,

the main body has a receiving portion along the outer shape of the foot insertion portion for receiving at least a part of the movable portion,

the movable portion moves downward relative to the main body portion when a downward load is applied to the cushioning member.

8. Shoe according to claim 7,

the housing portion includes an opening provided in a middle portion of the main body in a width direction.

9. Shoe according to claim 8,

the inner circumferential surface of the receiving portion is formed in a tapered shape.

10. Shoe according to claim 9,

the outer peripheral surface of the movable portion has a shape along the inner peripheral surface.

11. Shoe according to any of claims 7 to 10,

the movable portion is located at a position away upward from the facing surface when the cushioning member receives the first load.

12. Shoe according to any of claims 7 to 11,

the movable portion is provided in plurality in the front-rear direction.

13. Shoe according to any of claims 7 to 12,

the movable portion has an elliptical planar shape having a front-rear dimension larger than a width dimension.

14. Shoe according to any of claims 7 to 13,

the hardness of the material of the movable portion is different from the hardness of the material of the main body portion.

15. Shoe according to any of claims 7 to 14,

the hardness of the material of the main body portion is different between a portion on the inner leg side and a portion on the outer leg side across the movable portion in the width direction.

16. Shoe according to any of claims 7 to 15,

the area of the main body portion in contact with the facing surface is different between the inner leg side portion and the outer leg side portion across the movable portion.

17. Shoe according to any of claims 7 to 16,

the friction coefficient of the facing surface of the main body portion is different between the inner leg side portion and the outer leg side portion across the movable portion.

18. Shoe according to any of claims 1 to 17, further comprising:

and an interlocking member that pulls the upper downward when the cushioning member receives a downward load.

19. The shoe of claim 18,

the linkage component is fixed at the position of the vamp, which avoids the wearing opening.

20. The shoe of claim 19,

the interlocking member has: a sole side portion located on an upper surface side of the cushioning member; and extension parts extending upward from both ends in the width direction of the side parts of the sole.

21. The shoe of any of claims 187-20,

the interlocking member has a tubular or bag-shaped portion for wrapping the leg.