CN110913717A

CN110913717A - Shoes with removable sole

Info

Publication number: CN110913717A
Application number: CN201780090955.2A
Authority: CN
Inventors: 广田贵彦
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-08-22
Filing date: 2017-11-20
Publication date: 2020-03-24
Anticipated expiration: 2037-11-20
Also published as: CN110913717B; JP6233764B1; WO2019038940A1; JP2019037723A

Abstract

The invention provides a shoe which can restrain the fatigue of a wearer and lead the wearer to run or walk faster, which is provided with vamps (2a, 2b) arranged on a middle sole (1), and an inner space for containing toes is formed between the vamps (2a, 2b) and the middle sole (1); the shoe upper (2a, 2b) has: a vamp body (2a) fixed on the insole (1); a movable toe portion (2b) which is connected to the toe-side end of the upper body (2a) and is freely rotatable so as to approach the upper body (2a) centering on the connected portion; and fixing means (3 a-5 a, 3 b-5 b) provided in pairs on the respective surfaces of the vamp body (2a) and the movable toe (2 b); opening the toe-side region of the internal space by rotation of the movable toe (2 b); the movable toe part (2b) is fixed on the outer surface of the vamp body (2a) by fixing means (3 a-5 a, 3 b-5 b) to keep the toe side region in an open state.

Description

Shoes with removable sole

Technical Field

The invention relates to a shoe, in particular to a running shoe.

Background

In the case of long-distance running such as the marathon race, there is a need for a shoe (low shoe) that can be assisted to suppress fatigue of a runner wearing the shoe and to run faster. For example, patent document 1 discloses a shoe in which a leaf spring is attached to a sole of the shoe, and an impact at the time of landing is utilized as energy, thereby enabling efficient running. However, the technique of patent document 1 is not necessarily sufficient from the viewpoint of assisting the runner, and a better technique is required.

Documents of the prior art

Patent document

[ patent document 1 ] patent publication No. 2010-162318.

Disclosure of Invention

Technical problem to be solved by the invention

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a shoe that can suppress fatigue of a wearer and make the wearer run or walk faster.

Means for solving the problems

In order to solve the technical problem, the invention relates to a shoe which has the following formula: a midsole; and a shoe upper disposed above the midsole and forming an inner space for accommodating toes therebetween; the shoe is characterized in that the upper has: the vamp body is fixed on the insole; and a movable toe portion that is connected to an end portion on a toe side of the upper body and is freely rotatable so as to approach the upper body centering on the connected portion; and fixing means provided in pairs on respective surfaces of the vamp body and the movable toe portion; opening a toe side region of the interior space by rotation of the movable toe portion; the movable toe part rotating is fixed on the outer surface of the vamp body through the fixing device, and the toe side area is kept in an open state.

Effects of the invention

Therefore, the shoe according to the present invention can suppress fatigue of the wearer and make the wearer run or walk faster.

Drawings

Fig. 1 is a perspective view schematically illustrating a structure in which a tip of an inner space of a right shoe according to an embodiment of the present invention is closed.

Fig. 2 is a view (plan view) of a shoe according to an embodiment of the present invention as viewed from above.

Fig. 3 is a view (bottom view) of the shoe according to the embodiment of the present invention as viewed from below.

Fig. 4 is a front view of the toe side of the shoe according to the embodiment of the present invention (front view).

Fig. 5 is a view (rear view) of the heel side of the shoe according to the embodiment of the present invention as viewed from the front.

Fig. 6 is a front view of the big toe side of the inner side of the shoe according to the embodiment of the present invention (right side view).

Fig. 7 is a front view of the little toe side of the outer side of the shoe according to the embodiment of the present invention (left side view).

Fig. 8 is a perspective view schematically illustrating a structure of a shoe according to an embodiment of the present invention, in which the tip of the inner space is opened.

Fig. 9 is a partially enlarged side view showing the front end of the shoe in a closed state according to the embodiment of the present invention.

Fig. 10 is a partial cross-sectional view of the shoe according to the embodiment of the present invention, as viewed in the direction of line a-a in fig. 2, after the front end of the shoe in a closed state is partially enlarged.

Fig. 11 is a partially enlarged side view showing the front end of the shoe in an open state according to the embodiment of the present invention.

Fig. 12 is a partial sectional view of the shoe according to the embodiment of the present invention, as viewed from the line a-a in fig. 2, after partially enlarging the front end in the opened state.

Fig. 13 is a schematic top view showing a toe state of the front end of the shoe in the open state according to the embodiment of the present invention.

Fig. 14(a) is a schematic view showing a state in which the toe end of the shoe according to the embodiment of the present invention is biased from the toe-sole side to the ground surface in the open state, and fig. 14(b) is a schematic view showing a state in which the toe-sole side at the tip end of the inner space of the shoe according to the conventional comparative example is biased from the ground surface.

Fig. 15 is a perspective view schematically showing a configuration in which the front end of the internal space of the shoe according to the first modification of the embodiment of the present invention is closed.

Fig. 16 is a perspective view schematically showing a configuration in which the tip of the inner space of the shoe according to the second modification of the embodiment of the present invention is closed.

Detailed Description

The following describes embodiments of the present invention. In the description of the drawings, the same or similar parts are denoted by the same or similar reference characters. It should be noted that the drawings are schematic views, and the relationship between the thickness and the plane size, the thickness ratio of each device or each component, and the like differ from the actual product. Thus, specific thicknesses and dimensions should be judged with reference to the following description. It is to be noted that the drawings naturally include portions having different dimensional relationships or ratios from each other. The directions of "left and right" or "up and down" in the following description are simply defined for convenience of description, and are not defined to limit the technical idea of the present invention. For example, if the paper is rotated 90 degrees, "left-right" and "up-down" are naturally interchanged, and if the paper is rotated 180 degrees, "left" becomes "right" and "right" becomes "left".

< Structure of shoes >

First, the shoe is typically constructed of a pair of shoes on the right and left foot sides. Since the right shoe and the left shoe have a symmetrical structure, only the right shoe will be referred to as a "shoe" for example in the following description, and a repetitive description of the left shoe will be omitted.

The shoe according to the embodiment of the present invention is a running shoe, as shown in fig. 1, having a midsole 1; and a vamp (2a, 2b) disposed above the midsole (1) and forming an inner space for accommodating toes therebetween with the midsole (1). The shoe upper (2a, 2b) has: a vamp body 2a fixed on the midsole 1; and a movable toe portion 2b that is connected at an end thereof to an end of the shoe upper body 2a on the toe side and is rotatable in such a manner as to approach the shoe upper body 2a centering on the connected portion. The fixing means (3 a-5 a, 3 b-5 b) are provided in pairs on the respective surfaces of the vamp body 2a and the movable toe portion 2 b.

As shown in fig. 2, an insole 11 is detachably provided on the upper surface of the midsole 1 in the inner space of the shoe to absorb the impact force on the sole. As shown in fig. 1 and 3, under the midsole 1, an outsole 6 having a tread pattern is provided. Here, the tread pattern is not shown in detail. The midsole 1 may be made of a rubber material or the like including natural rubber or plastic, etc., forming a sole body of the footwear.

The vamp body 2a and the movable toe 2b of the vamps (2a, 2b) are made of a soft fabric, and include a fiber material made of a natural fiber material or a synthetic material such as polyester or polyamide. In the embodiment of the present invention, the vamp body 2a and the movable toe portion 2b may be integrally made of the same material, or may be made of different materials. As shown in fig. 4 and 5, the lower end of the upper body 2a is coupled to the peripheral region of the upper surface of the midsole 1, and the upper body 2a and the midsole 1 are firmly integrally formed.

As shown in fig. 6 and 7, the movable toe portion 2b entirely covers the big toe side, i.e., the inner side, the front ends of 5 toes, the little toe side, i.e., the outer side, and the upper portions of 5 toes. The movable toe portion 2b is substantially the same shape as a toe portion of a normal shoe upper (2a, 2 b). However, the movable toe portion 2b of the shoe according to the embodiment of the present invention is connected to the upper body 2a at a bending position V shown by a virtual line of a broken line in fig. 1, but is detachably attached to the lower midsole 1 side.

The movable toe part 2b is detachably attached to the midsole 1, and an opening and closing mechanism for partially opening and closing an inner space for covering toes is provided between the movable toe part 2b and the midsole 1. The inner space can be switched between a closed state and an open state by the opening and closing mechanism. The inner space is closed by the position of the movable toe portion 2b being aligned with the outer surface of the upper body 2a at the front end on the midsole 1 and fixed to each other. Further, the movable toe portion 2b is separated from the midsole 1 by rotating toward the outer surface side of the upper body 2a, thereby opening the internal space. In the embodiment of the present invention, the opening and closing mechanism is a slide fastener.

As shown in fig. 8, the zipper comprises: a belt-shaped lower tape 7 a; and a lower side element group 8a including a plurality of elements (teeth) arranged in parallel in the extending direction of the lower tape 7a at the upper end thereof. Further, the slide fastener includes: a belt-shaped upper tape 7b provided above the lower tape 7 a; and an upper side element group 8b in which a plurality of elements are arranged side by side so as to be engaged with the lower side element group 8a at the lower end of the upper tape 7 b. The states illustrated in fig. 8 are: the movable toe portion 2b is turned to expose the inner surface to the outside, and the upper tape 7b and the upper side set of teeth 8b are provided on the inner surface to extend toward the tip side.

Further, as shown in fig. 9, a slider 9 is provided on the slide fastener, which allows the heads of the upper side chain element group 8b and the lower side chain element group 8a to be freely opened and closed with each other; and a draw hook 10 provided on the slider 9. The lower side set of teeth 8a is disposed lower than the upper surface of the inner sole 11.

The zipper is arranged to form an opening and closing area spanning from the base of the big toe to the base of the little toe through the front end side of 5 toes. That is, the opening/closing area is selectively formed so that the opening portion horizontally extends from the middle position of the metatarsophalangeal joint and the interphalangeal joint on the big toe side to the middle position of the metatarsophalangeal joint and the proximal interphalangeal joint on the little toe side at the front end of the upper (2a, 2 b). The metatarsophalangeal joint is usually located in the most prominent zone on the lateral side of the corresponding big toe, on the side opposite to the little toe. Furthermore, the metatarsophalangeal joint is located in the most prominent position on the lateral side of the corresponding little toe, on the opposite side to the big toe.

As shown in fig. 10, the lower end of the tip end of the movable toe portion 2b hangs down to the mounting position of the lower tape 7a to the midsole 1. The lower portion of the lower band 7a is attached to the front end of the midsole 1. The upper portion of the upper tape 7b is attached to the inner surface of the front end of the movable toe portion 2b so as to hang down along the front end of the movable toe portion 2 b. That is, the entire slide fastener is covered by the front end of the movable toe portion 2 b.

As shown in fig. 1, the fixing means (3a to 5a, 3b to 5b) are realized by three sets of fixing members provided in pairs on the outer surface of the vamp body 2a and on the outer surface of the movable toe portion 2b, respectively. In the left and right regions respectively sandwiching the central region and the central region of the surface of the movable toe portion 2b from both sides, the central anchor 3a, the inner anchor 4a, and the outer anchor 5a on the movable toe portion 2b side are provided at intervals in the top view.

On the other hand, a central anchor 3b, a medial anchor 4b, and a lateral anchor 5b on the vamp body 2a side are provided at intervals on both sides of the central region and the instep surface of the vamp body 2a as viewed from above. The center anchor 3a, the inner anchor 4a, and the outer anchor 5a on the movable toe portion 2b side correspond to the center anchor 3b, the inner anchor 4b, and the outer anchor 5b on the upper body 2a side, respectively. In the embodiment of the present invention, a pair of fixing members are snap fasteners which are repeatedly detachable from each other. The snap fastener is fixed by sewing on the fiber fabric of the movable toe portion 2b or the like.

The center anchor 3a, the inner anchor 4a, and the outer anchor 5a on the movable toe portion 2b side, and the center anchor 3b, the inner anchor 4b, and the outer anchor 5b on the upper body 2a side, which correspond to each other, are separated by substantially the same distance centering on the bending position V. The separation distance is the shortest surface distance (separated along the surface), and for example, if it is a shoe corresponding to a foot length of about 27.5cm from the heel to the longest toe of the toes of an adult male, it is particularly preferable that the upper limit of the separation distance between the central fixing piece 3a on the movable toe portion 2b side and the central fixing piece 3b on the upper body 2a side is set to about 4.8 mm.

As shown in fig. 12, when the movable toe portion 2b is fixed to the upper body 2a, a protruding portion having a substantially V-shaped cross section is formed on the front end side. If the separation distance exceeds 4.8mm, the distance between the fixing position and the bending position V of the fixing member becomes excessively long, the projecting portion becomes large, and the fixing member may sag toward the toe side due to vibration during running and may come into contact with the toes. By setting the separation distance to about 4.8mm or less, the protruding portion can be effectively suppressed from contacting the toes. The lower limit of the separation distance may be set as appropriate according to the shape, specification, and the like of the fastener.

< opening and closing action >

Next, the opening and closing operation of the front ends of the shoe uppers (2a, 2b) according to the embodiment of the present invention will be described. First, the slide fastener as an opening and closing mechanism is exposed at the tip of the movable toe portion 2b of the pivoting shoe upper (2a, 2 b).

Then, the slider 9 is moved by the draw hook 10 of the slide fastener to separate the upper element and the lower element, thereby separating the upper element and the lower element. Thereafter, as shown in fig. 11, the movable toe portion 2b of the shoe upper (2a, 2b) is rotated to the shoe upper body 2a side, and is bent at the bending position, so that the outer surface of the movable toe portion 2b and the outer surface of the shoe upper body 2a are brought close to each other and opposed to each other, and the toe side region at the front end of the internal space is opened.

Subsequently, as shown in fig. 12, the center anchor 3a on the outer surface of the movable toe portion 2b is engaged with the center anchor 3b on the upper body 2a side. Similarly, the inner side anchor 4a on the movable toe portion 2b side and the inner side anchor 4b on the upper body 2a side are engaged, and the outer side anchor 5a on the movable toe portion 2b side and the outer side anchor 5b on the upper body 2a side are engaged, respectively. The respective outer surfaces of the curved movable toe portion 2b and the upper body 2a are opposed to each other at the approaching position and fixed by engaging each of the three sets of paired fixing members, keeping the toe side region of the front end of the internal space in an open state.

As shown in fig. 13, by opening the front end of the inner space of the shoe, the upper surfaces of the 5 toes are exposed at the opening portion. Here, the zipper forms an opening and closing region formed from the metatarsophalangeal joint J1 on the big toe side_LAnd interphalangeal joint J2_LTo the little-toe metatarsophalangeal joint J1_RAnd the proximal interphalangeal joint J2_RUp to the intermediate position of (2). Thus, in the open state, the 5 toes may cause the adductor or flexor muscle groups of the respective metatarsophalangeal joints to expand and contract more than in the closed state. So that the 5 toes can be moved to the outside of the shoe to open the gaps between the adjacent toes more largely than in the closed state when viewed from above. The states illustrated in fig. 13 are: the big toe and little toe protrude further to the outside than the outer edge of the midsole 1.

Therefore, as shown in fig. 14(a), the tread force of the toe tips perpendicular to the ground is strengthened on the bottom surfaces of the 5 toes in contact with the insole. Furthermore, the tread force perpendicular to the ground is strengthened in the region including the forefoot portion 13 of the ball 12. Fig. 14(a) schematically shows an oblique line in a region where the force is applied to the ground surface from the sole side.

< comparative example >

On the other hand, in the case of the shoe according to the comparative example in which the front end of the upper has no movable toe portion, the 5 toes cannot move outward while being sandwiched between the inner surface of the upper and the insole at the front end. Furthermore, joints between phalanges of 5 toes may be too crowded to extend into the internal space in a bent state. Therefore, as shown in fig. 14(b), on the bottom surface side of the 5 toes, the toe tip and the forefoot portion 13 cannot sufficiently strengthen the tread force on the ground. The force state in the case shown in each of fig. 14(a) and 14(b) was obtained under the same conditions except for the structure of the shoe.

In addition, when running, the other parts except the tiptoe of the right foot of the runner are wrapped by the vamp body. The right foot is securely held in the shoe by the contact portions with the upper body and the insole, so that the shoe does not fall off or get in the way from the right foot while running.

Then, to close the toe region of the internal space, the three sets of paired fixtures are separated to release the fixation of the movable toe portion, and the movable toe portion is rotated to the tip side and returned to the initial position. Then, the upper element and the lower element are engaged by moving the slider by the hook of the slide fastener, and the toe side region of the internal space is closed. And then, covering the tip of the movable toe part on the zipper.

With the shoe according to the embodiment of the present invention, when the toe side region of the internal space is opened by the rotational movement of the movable toe portion of the upper, 5 toes can be moved greatly, respectively, and the gap between the adjacent toes is opened. Therefore, the tread force on the ground by one toe and the forefoot portion 13 can be strengthened.

Particularly during running, the runner's resistance to movement by gravity acts as a brake. In order to suppress the resistance exercise and to more effectively utilize energy to run quickly, it is important to strongly tread the ground vertically using the bottom surface of the toes and the forefoot. With the running shoe according to the embodiment of the present invention, since the body stability is improved by strengthening the pedaling force and the force is effectively transmitted from the foot to the ground, the fatigue of the runner can be suppressed and the runner can run more quickly and efficiently.

In the shoe according to the embodiment of the present invention, the tip region of the upper is completely removed from the upper side of the 5 toes by the rotating motion of the movable toe portion, so that the inner surface of the upper does not repeatedly contact the upper surfaces of the toes during running. Therefore, the fatigue of the toes can be reduced while preventing the inflammation caused by the contact.

In the shoe according to the embodiment of the present invention, the state in which the movable toe portion is fixed to the midsole to close the internal space and the state in which the movable toe portion is separated from the midsole to open the internal space can be switched by the opening and closing mechanism. Therefore, in the closed state, the integration of the entire upper as a shoe can be improved.

In the shoe according to the embodiment of the present invention, the lower element group of the slide fastener as the opening and closing mechanism is disposed lower than the upper surface of the insole, and therefore the lower element group does not interfere with the toes disposed on the insole. Thus, it is possible to transmit the force from the foot to the ground more effectively and prevent the lower side-chain tooth group from contacting and interfering with the toes.

Further, in the shoe according to the embodiment of the present invention, the entire slide fastener is covered with the tip of the movable toe portion in the state where the internal space is closed. Therefore, it is possible to prevent rainwater, moisture, or the like from entering the inner space of the shoe through the gap in the case where the opening and closing mechanism has a small gap, and to further enhance the protection of the toe ends. Further, the zipper can be formed to conform to a normal design pattern by covering it, and thus, for example, is suitable for use in applications other than walking, such as shopping.

< first modification >

For example, the present invention is also applicable to a case where the slide fastener is exposed from the front end of the upper (2a, 2c) like the shoe according to the first modification shown in fig. 15. Since the movable toe portion 2c of the shoe according to the first modification does not need a portion for covering the front end, the material cost can be reduced and the manufacturing process can be simplified.

The configuration of the shoe according to the first modification except for the movable toe portion 2c is equivalent to the same name of the shoe according to the embodiment of the present invention shown in fig. 1 to 14, and therefore, the redundant description is omitted. The same effects as those obtained when the shoe according to the embodiment of the present invention is used can be obtained also in the shoe according to the first modification.

< second modification >

For example, as in the shoe of the second modification shown in fig. 16, hook and loop fasteners (hook and loop fasteners) may be used as the fixing devices (3a1 to 5a1, 3b1 to 5b 1). The central anchor 3a1, the inner anchor 4a1, and the outer anchor 5a1 on the movable toe portion 2b side illustrated in fig. 16 correspond to the central anchor 3a, the inner anchor 4a, and the outer anchor 5a on the movable toe portion 2b side illustrated in fig. 1, respectively, and may be implemented by, for example, a burred portion of a hook and loop fastener. The central anchor 3b1, the medial anchor 4b1, and the lateral anchor 5b1 on the upper body 2a side illustrated in fig. 16 correspond to the central anchor 3b, the medial anchor 4b, and the lateral anchor 5b on the upper body 2a side illustrated in fig. 1, respectively, and can be realized by, for example, round hair portions corresponding to the burred portions.

The structures of the shoes according to the second modification except for the fixing devices (3a 1-5 a1, 3b 1-5 b1) are equivalent to those of the shoes according to the embodiment of the present invention shown in fig. 1-14, and therefore, the description thereof will not be repeated. Even in the shoe according to the second modification, the same effects as those obtained when the shoe according to the embodiment of the present invention is used can be obtained.

< other embodiments >

The present invention has been described in the embodiments disclosed above, but the description and drawings constituting a part of the disclosure should not be construed as limiting the present invention. Various alternative embodiments, examples, and techniques of use will be apparent to those skilled in the art in view of this disclosure.

For example, in the embodiment of the present invention, the state in which the movable toe portion is fixed to the midsole to close the internal space and the state in which the movable toe portion is separated from the midsole to open the internal space can be switched by the opening and closing mechanism. However, the opening and closing mechanism is not necessarily required as long as the movable toe portion is rotatably coupled with respect to the upper body. In other words, the present invention can be implemented even without a structure for closing the opening portion.

Further, although the case where the slide fastener which is the linear fastener is used as the opening and closing mechanism has been described, the present invention is not limited to this. The user, i.e., runner, may freely open and close the front end of the upper interior space, and other opening and closing mechanisms such as a zip fastener may be used at the position of the zipper shown in fig. 8.

The movable toe portion covers not only the left and right directions of the 5 toes but also the front end and the upper region, but it is not necessary to cover the front end and the upper region. As long as the left and right sides of the shoe cover can be opened and closed, 5 toes can move laterally, and the treading force on the ground can be strengthened.

In the embodiment of the present invention, for convenience of explanation, the fiber material constituting the upper is explained as one material, but the present invention is not limited thereto, and a multi-layer fiber material in which a plurality of materials are stacked may be used. Furthermore, in the embodiment of the present invention, the connection structure of the upper body and the movable toe portion is realized by bending one continuous fiber fabric. However, the connecting structure of the present invention is not limited to this, and for example, a metal member such as a hinge, a soft other fiber material, or the like may be prepared as the connecting member, and the connecting member may be spaced between the upper body and the movable toe portion, which are made of different fiber materials, respectively, so that both can be connected to each other so as to be openable and closable.

The shoe according to the present invention can be realized by combining the components of the shoe shown in fig. 1 to 16. Further, although the shoe according to the present invention is suitable for running, it is not limited to a running shoe, and may be used for other purposes, for example, shoes for various other purposes such as shopping, for example, so-called casual shoes. As described above, the present invention includes various embodiments and the like not described above, and the technical scope of the present invention is determined only by the specific features of the invention according to the claims reasonably obtained from the above description.

Description of the reference numerals

1 middle sole

2a vamp body

2b, 2c Movable toes

3a, 3a1 center mount

3b, 3b1 center mount

4a, 4a1 medial fixation

4b, 4b1 medial fixation

5a, 5a1 lateral fixation

5b, 5b1 lateral fixation

6 outer sole

7a lower side belt

7b upper side belt

8a lower side element group

8b upper side element group

9 slider

10 draw hook

11 inner bottom

12 ball of big toe

13 forefoot part

J1_L，J1_RMetatarsophalangeal joint

J2_L，J2_RThe interphalangeal joints.

Claims

1. A shoe, having: a midsole; and an upper disposed above the midsole and forming an inner space for accommodating toes therebetween;

said shoe being characterized in that said upper has:

the vamp body is fixed on the insole;

a movable toe portion that is connected to the toe-side end of the upper body, and that is freely rotatable so as to approach the upper body centering on the connected portion; and

fixing means provided in pairs on respective surfaces of the upper body and the movable toe;

opening a toe side region of the internal space by rotation of the movable toe portion;

the movable toe part rotating is fixed on the outer surface of the vamp body through the fixing device, and the toe side area is kept in an open state.

2. The shoe of claim 1, wherein:

the shoe upper further comprises an opening and closing mechanism which switches a closed state and an open state, wherein the closed state is a state that the position of the movable toe part is aligned with the outer surface of the shoe upper body at the front end of the insole and is fixed, so that the inner space is closed; the open state is a state in which the movable toe portion is rotated so as to be separated from the midsole to open the internal space.

3. The shoe of claim 2, wherein:

the opening and closing mechanism is a zipper;

the shoe further having an insole disposed within the interior space above the midsole;

the lower side element group of the slide fastener is configured to be lower than the upper surface of the inner bottom.